Skip to main content
9,000+ open opportunities indexed

Search Grants — Free, No Account Required

Search federal, state, and foundation grants by keyword, state, or focus area. When you find a match, apply with our AI-assisted application builder.

956 grants foundClear search

24 grants worth up to $13.7M match your search

Enter your email to see grant names, funders, and application links

Dynamic OCT tracking for enhanced visualization of ophthalmic surgery

open

NEI - National Eye Institute

PROJECT ABSTRACT Cataracts and glaucoma are the two leading causes of blindness worldwide. Crucial ophthalmic procedures to treat cataract, glaucoma, and other vision conditions require precise visualization of anatomy and microsurgical instruments. Visualization in such surgeries has been limited to stereo optical microscopes since the early 20th century. With advancements in optical coherence tomography (OCT), we can now obtain real-time 3D visualization within the eye. Over the past decade, intraoperative OCT (iOCT) systems have become widely researched and integrated into the latest ophthalmic microscopes built by companies such as Zeiss and Leica. These iOCT systems come with the potential to revolutionize ophthalmic surgery, with an unparalleled ability to resolve key anatomic features at micron-level precision. However, there is a crucial challenge that hampers the clinical utility of iOCT. This challenge stems from the fundamental tradeoff between OCT field-of-view and imaging speed. This tradeoff constrains state-of-the-art systems to operate with a relatively small (e.g. 5x5 mm) field of view to achieve the volume update speeds (~10-15 Hz) required for surgical visualization. Consequently, a trained operator on the surgical team must manually reposition the OCT scan throughout the surgery. The current implementation of iOCT results in a “point-and-shoot” approach to imaging, i.e. using OCT as an intermittent snapshot tool, rather than as a continuous surgical visualization technology. With even small movements of the surgical instruments, the OCT image can quickly lose sight of the surgical region of interest (ROI). Manual tracking of iOCT discards a key advantage of OCT, which is real-time 3D data collection. With advances in deep learning methods for image processing and object recognition, there are new opportunities to tackle this problem. The goal of this project is to engineer a novel computational system for automatic, real- time tracking of the surgical ROI in a clinical iOCT system. Our vision is to develop a system that can be readily applied to existing clinical microscopes, and adaptable to future robotic surgical systems. As part of our preliminary work, we have created a lateral tool tracking OCT system using deep learning models applied to the microscope feed. Our current system utilizes a novel synthetic data approach, making use of 3D-rendered models of eyes and tools to accelerate deep learning model development. In the proposed project, we expand on this preliminary work by developing a system for 3D multimodal surgical ROI tracking of iOCT that can be applied to many different types of ophthalmic surgeries. We will then evaluate our platform via ex-vivo porcine and human cadaver eye studies with wet-lab benchmarking and simulated surgeries with our clinical collaborators. Our immediate application is ophthalmic surgery, but the methodology has relevance to a wide range of 3D imaging systems for microsurgical procedures. By developing this system for dynamic OCT surgical tracking, we hope to improve ophthalmic visualization in both training and surgical practice.

Up to $43K
2029-04-30
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Early Life Stress, Cellular Vulnerability, and the Developmental Programming of Metabolic Disease

open

NIDDK - National Institute of Diabetes and Digestive and Kidney Diseases

PROJECT SUMMARY Early life stress (ELS), particularly during fetal development, is a critical risk factor for long-term health, including obesity and metabolic disorders. This project investigates how prenatal stress exposure is biologically embedded, leading to increased vulnerability to abdominal adiposity and metabolic dysfunction. Our long-term goal is to eluci- date cellular and molecular pathways that mediate the developmental origins of metabolic disease, supporting early identification and prevention strategies for at-risk children. Despite known associations between ELS and adult dis- ease, current research is limited by inconsistent findings in early life, inadequate biomarkers of fetal stress exposure, and poor measurement of adiposity in infants. Traditional reliance on weight-based metrics fails to capture fat dis- tribution, which is key to metabolic risk. Moreover, stress exposure during pregnancy is typically estimated from basal circulating biomarkers, neglecting dynamic physiological stress responses. To address these gaps, we employ a translational, multi-level design integrating basic science and clinical research. Using umbilical-derived mesenchy- mal stromal cells (MSCs) from human newborns, we will model individualized cellular vulnerability to ELS. In par- allel, we will track in vivo adipose development using serial MRI assessments and metabolic profiling in infants. Our specific aims are: Aim 1: Determine if biological stress during pregnancy predicts infant adiposity, distribution, and metabolic function using state-of-the-art MR imaging at birth and 5–6 months. Aim 2: Test whether MSCs from high-stress exposed infants exhibit greater cellular vulnerability under in vitro adi- pogenic challenge conditions. Stress exposure will be comprehensively quantified using ex vivo glucocorticoid-cytokine stimulation, diurnal sali- vary cortisol sampling, and maternal blood assays during early and late pregnancy. These data will be synthesized into a composite (PCA) biological stress exposure score. We hypothesize that dynamic, functionally derived measures of maternal stress will better predict infant abdominal adiposity and metabolic function than static bi- omarkers, and that stem cells from high-stress-exposed infants will exhibit greater vulnerability—reflected by in- creased lipid accumulation and hypertrophy—especially under in vitro challenge conditions. This integrated ap- proach will illuminate mechanisms of biological embedding and identify novel markers of metabolic risk. Findings will advance precision health by enabling targeted early-life interventions. This project will also establish a scalable human newborn stem cell biobank for future studies of stress-related disease pathways.

Up to $777K
2031-03-31
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Effect of HIV Infection on Sickle Cell Disease Outcomes (EFHISA)

open

FIC - John E. Fogarty International Center for Advanced Study in the Health Sciences

Sickle cell disease (SCD) affects approximately 100,000 Americans, making it the most common inherited blood disorder in the United States. Over 1.2 million people are living with HIV in the U.S. Both chronic illnesses are endemic in overlapping geographic areas and reported in thousands of U.S. patients. A systematic review found conflicting conclusions on the effect of HIV on SCD and revealed numerous knowledge gaps, including the clinical profile of SCD patients living with HIV (PLWHIV), and the impact of HIV infection and HIV treatment on SCD outcomes. The clinical management of the comorbidity is currently uncertain in the U.S. because of lack of evidence. The previous studies were unable to include SCD severity due to the phenotype variability within SCD genotypes that may have different associations with severity of SCD and HIV status. Although the study results will be applicable to the medical care of Americans with HIV and SCD, the study will be conducted in Cameroon because the higher HIV prevalence allows the enrollment of more HIV+ patients with SCD. In addition, four of the five SCD genotypes are found in Central Africa allowing the study of this important covariate. Findings from Cameroon are generalizable in the U.S. because the diagnosis, the pathophysiology, and the ART regimens are similar. Based upon the genotypic, clinical, and biological particularities of SCD the project will address the gap in knowledge on the effects of HIV infection on SCD in two Specific Aims: Aim 1: We shall establish a clinical registry that includes all SCD patients to measure HIV prevalence, demographic and clinical characteristics in Cameroon. This will be a cross-sectional and descriptive study involving all SCD patients registered and followed-up in in the country. The investigators will screen all the 866 patients for HIV to confirm their status and to potentially identify new HIV positive patients. This research phase will describe the baseline clinical profile of SCD, determine the frequency of HIV infection in SCD patients and compare socio-demographic and clinical factors between HIV+ and HIV- SCD patients. Aim 2: Using a sample from the same patient population, we shall conduct a cross-sectional study on a matched random sampling of 48 HIV-positive SCD patients, and 96 HIV-negative SCD patients. Additionally, we shall randomly select 48 consenting HIV positive non-SCD patients among the HIV patients currently followed-up at the YUTH HIV care center as a second control group for the study. We shall measure prospectively the levels of biological markers of thrombosis, hemolysis, inflammation and organ failure and compare them according to HIV status. We shall assess if the SCD genotype will be an effect modifier of the relation between HIV status and SCD biological markers. The medical registry and data collected during this exploratory study will serve as the preliminary data for a future R01 application. The study will provide important data to improve specific ways US care through future interventional studies on immune system modulation, targeted infection prophylaxis, iron management, tailored ART regimens and gene therapy optimization in American SCD patients living with HIV.

Up to $156K
2028-05-31
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Effects of Long-Acting Antiretroviral Therapy on Offspring Immunity in Rhesus Macaques

open

NICHD - Eunice Kennedy Shriver National Institute of Child Health and Human Development

PROJECT SUMMARY Over 1 million women living with HIV (WLWH) give birth annually. With widespread use of combination antiretroviral therapy (cART), vertical transmission has been significantly reduced, resulting in ~16 million HIV- exposed uninfected (HEU) children as of 2023. Despite being HIV negative, these children face increased risks of poor growth, infection-related mortality, and respiratory disease. These outcomes are believed to result from maternal HIV-induced inflammation and/or cART toxicity, as many antiretrovirals cross the placenta and may disrupt fetal immune development. However, distinguishing the effects of HIV versus ART is difficult in clinical studies due to challenges of studying non-HIV infected women receiving ART. Limited access to fetal tissues further hampers mechanistic insight, creating a need for translational animal models. To address this critical knowledge gap, we propose to use a rhesus macaque model of simian immunodeficiency virus (SIV) infection to investigate how maternal HIV and long-acting ART (LA-ART) affect fetal immune development. We hypothesize that despite the absence of vertical transmission, maternal SIV and LA-ART exposure dysregulates immune ontogeny in the offspring via altered hematopoiesis. A novel LA-ART regimen of FDA-approved drugs Lenacapavir (LEN) and Cabotegravir (CAB), shown to provide effective viral suppression in preliminary macaque studies, will be given bimonthly by injection to female macaques that will then undergo time-mated breeding following viral suppression. Three experimental groups will be studied: [1] SIV-infected, LA- ART treated; [2] uninfected, LA-ART treated; and [3] uninfected, untreated controls. Offspring will be delivered naturally and monitored through six months of age. Specific Aim 1 will assess how maternal SIV/LA-ART versus LA-ART alone affects infant immune maturation and function in the periphery and in tissues using flow cytometry, single-cell RNA/ATAC-sequencing, and in vitro stimulation. We will evaluate vaccine responsiveness using Varivax™ and examine B/T cell responses and receptor repertoires. Specific Aim 2 will study the impact of maternal SIV/LA-ART versus LA-ART alone on hematopoiesis in the offspring. We hypothesize that SIV/LA-ART exposure impairs differentiation and maturation of hematopoietic stem and progenitor cells (HSPCs). Bone marrow will be analyzed via flow cytometry, differentiation assays, and single-cell RNA/ATAC-sequencing. Functional HSPC capacity will be tested via transplantation into immunodeficient mice. This study uses a clinically highly relevant primate model for HIV cure research and neonatal immunity, and advanced immunological tools to uncover how maternal HIV and LA-ART exposure alter infant immune development. Findings will guide future strategies to improve immune outcomes in HEU children.

Up to $2.7M
2030-05-31
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Electrochemical Systems

open

U.S. National Science Foundation

TheElectrochemical Systemsprogram is part of the Chemical Process Systems cluster, which also includes: 1) theCatalysisprogram; 2) theInterfacial Engineeringprogram; and 3) theProcess Systems, Reaction Engineering, and Molecular Thermodynamicsprogram. The goal of theElectrochemical Systemsprogram is to support fundamental engineering science research that will enable innovative processes involving electrochemistry or photochemistry for the sustainable production of electricity, fuels, chemicals, and other specialty and commodity products. Processes utilizing electrochemistry or photochemistry for sustainable energy and chemical production must be scalable, environmentally benign, reduce greenhouse gas production, and utilize renewable resources. Research projects that stress fundamental understanding of phenomena that directly impact key barriers to improved system or component-level performance (for example, energy efficiency, product yield, process intensification) are encouraged. Processes for energy storage should address fundamental research barriers for renewable electricity storage applications, for transport propulsion, or for other applications that could have impact towards climate change mitigation. For projects concerning energy storage materials, proposals should involve testable hypotheses that involve device or component performance characteristics that are tied to fundamental understanding of transport, kinetics, or thermodynamics. Advanced chemistries beyond lithium-ion are encouraged. Proposed research on processes utilizing electrochemistry or photochemistry should be inspired by the need for economic and impactful conversion processes. All proposal project descriptions should address how the proposed work, if successful, will improve process realization and economic feasibility and compare the proposed work against current state of the art. Highly integrated multidisciplinary projects are encouraged. When appropriate, collaborations with industrial technologists are encouraged through GOALI proposals. Collaborative projects with an integrated experimental and theoretical approach are also encouraged. Topics of interest include electrochemical energy storage and electrochemical production/conversion systems. Radically new battery systems can move the U.S. more rapidly toward a more sustainable transportation future and to greater renewable electricity production penetration. High-energy density and high-power density batteries suitable for transportation and renewable energy storage applications are of primary interest. Advanced systems involving metal anodes, solid-state electrolytes, nonaqueous systemsbeyond lithium, aqueous systems beyond lithium,and multivalent chemistries are encouraged. Research activities focused on commercially available systems such as lead-acid and nickel-metal hydride batteries or lithium-ion batteries for medical or consumer electronics applications will not be considered by this program. Novel electrochemical and photochemical systems and processes for the production of chemicals and high-value products are encouraged. Emphasis is placed on those systems that improve process intensification and process modularization with accompanying benefits in energy efficiency and environmental footprint. Additional fundamental science topics of interest to this program include the study of: <ul type="disc"> <li>advanced fuel cell systems or fuel cell components for transportation propulsion or grid energy storage applications;</li> <li>flow batteries for stationary energy storage applications including alternative redox chemistries (e.g., organic, inorganic, organometallic, macromolecular) and operating strategies (e.g., redox-mediation, suspensions); and</li> <li>photocatalytic or photoelectrochemical processes and devices for the splitting of water into hydrogen gas or for the reduction of carbon dioxide to liquid or gaseous fuels. Projects that largely focus on developing fundamental understanding of the catalytic reaction mechanisms and structure-function relationships may be more appropriate as submissions to the CBET Catalysis program (CBET 1401).</li> </ul> Projects submitted to the Electrochemical Systems program are expected to develop fundamental, molecular-level understanding of the key chemical reaction and transport phenomena barriers to improved system-level performance. Innovative proposals outside of these specific interest areas may be considered. However, prior to submission, it is recommended that the Principal Investigator contact the program director to avoid the possibility of the proposal being returned without review. Referrals to other programs within NSF: <ul type="disc"> <li>Proposals that focus on electric-field driven separations such as dielectrophoresis should be directed to theInterfacial Engineeringprogram (CBET 1417).</li> <li>Proposals that focus on thermal management of energy storage devices and systems should be submitted to theThermal Transport Processesprogram (CBET 1406).</li> <li>Proposals that focus on improving device and system performance of primarily organic, inorganic, and hybrid photovoltaic (PV) technologies, including perovskites, may be more appropriate as submissions to the Electronics, Photonics, and Magnetic Devices program in Engineering's Division of Electrical, Communications, and Cyber Systems (ECCS 1517). PV materials proposals that focus on the material science may be considered in the Division of Materials Research of the Directorate for Mathematical and Physical Sciences.</li> <li>Proposals that focus on the generation of thermal energy by solar radiation should be directed to theThermal Transport Processesprogram (CBET 1406).</li> </ul> INFORMATION COMMON TO MOST CBET PROGRAMS Proposals should address the novelty and/or<a href="http://www.nsf.gov/about/transformative_research/faq.jsp">potentially transformative nature</a>of the proposed work compared to previous work in the field. Also, it is important to address why the proposed work is important in terms of engineering science, as well as to also project the potential impact on society and/or industry of success in the research. The novelty or potentially transformative nature of the research should be included, as a minimum, in the Project Summary of each proposal. The duration of unsolicited proposal awards in CBET is generally up to three years. Single-investigator award budgets typically include support for one graduate student (or equivalent) and up to one month of principal investigator time per year(awards for multiple investigator projects are typically larger). Proposal budgets that are much larger than typical should be discussed with the Program Director prior to submission. Proposers can view budget amounts and other information from recent awards made by this program via the &ldquo;What Has Been Funded (Recent Awards Made Through This Program, with Abstracts)&rdquo; link towards the bottom of this page. Faculty Early Career Development(CAREER)program proposals are strongly encouraged. Award duration is five years.The submission deadline for Engineering CAREER proposals is in July every year. Learn more in the<a href="https://www.nsf.gov/career">CAREER program description</a>. Proposals for Conferences, Workshops, and Supplements: PIs are strongly encouraged to discuss their requests with the Program Director before submission of the proposal. Grants forRapid Response Research(RAPID)andEArly-concept Grants for Exploratory Research(EAGER)are also considered when appropriate. Please note that proposals of these types must be discussed with the program director before submission.Grant Opportunities for Academic Liaison with Industry (GOALI)proposals that integrate fundamental research with translational results and are consistent with the application areas of interest to each program are also encouraged. Please note that RAPID, EAGER, and GOALI proposals can be submitted anytime during the year. Details about RAPID, EAGER, and GOALI are available in theProposal &amp; Award Policies &amp; Procedures Guide(PAPPG), Part 1, Chapter II, Section E: Types of Proposals. COMPLIANCE: Proposals which are not compliant with the<a href="https://www.nsf.gov/publications/pub_summ.jsp?ods_key=pappg" target="_blank">Proposal &amp; Award Policies &amp; Procedures Guide (PAPPG)</a>will be returned without review.

Rolling
science_technology_and_other_research_and_developmentenvironment

Free to search & build · $99 one-time to unlock the application pack · No subscription

Electrochemical Systems

open

U.S. National Science Foundation

TheElectrochemical Systemsprogram is part of the Chemical Process Systems cluster, which also includes: 1) theCatalysisprogram; 2) theInterfacial Engineeringprogram; and 3) theProcess Systems, Reaction Engineering, and Molecular Thermodynamicsprogram. The goal of theElectrochemical Systemsprogram is to support fundamental engineering science research that will enable innovative processes involving electrochemistry or photochemistry for the sustainable production of electricity, fuels, chemicals, and other specialty and commodity products. Processes utilizing electrochemistry or photochemistry for sustainable energy and chemical production must be scalable, environmentally benign, reduce greenhouse gas production, and utilize renewable resources. Research projects that stress fundamental understanding of phenomena that directly impact key barriers to improved system or component-level performance (for example, energy efficiency, product yield, process intensification) are encouraged. Processes for energy storage should address fundamental research barriers for renewable electricity storage applications, for transport propulsion, or for other applications that could have impact towards climate change mitigation. For projects concerning energy storage materials, proposals should involve testable hypotheses that involve device or component performance characteristics that are tied to fundamental understanding of transport, kinetics, or thermodynamics. Advanced chemistries beyond lithium-ion are encouraged. Proposed research on processes utilizing electrochemistry or photochemistry should be inspired by the need for economic and impactful conversion processes. All proposal project descriptions should address how the proposed work, if successful, will improve process realization and economic feasibility and compare the proposed work against current state of the art. Highly integrated multidisciplinary projects are encouraged. When appropriate, collaborations with industrial technologists are encouraged through GOALI proposals. Collaborative projects with an integrated experimental and theoretical approach are also encouraged. Topics of interest include electrochemical energy storage and electrochemical production/conversion systems. Radically new battery systems can move the U.S. more rapidly toward a more sustainable transportation future and to greater renewable electricity production penetration. High-energy density and high-power density batteries suitable for transportation and renewable energy storage applications are of primary interest. Advanced systems involving metal anodes, solid-state electrolytes, nonaqueous systemsbeyond lithium, aqueous systems beyond lithium,and multivalent chemistries are encouraged. Research activities focused on commercially available systems such as lead-acid and nickel-metal hydride batteries or lithium-ion batteries for medical or consumer electronics applications will not be considered by this program. Novel electrochemical and photochemical systems and processes for the production of chemicals and high-value products are encouraged. Emphasis is placed on those systems that improve process intensification and process modularization with accompanying benefits in energy efficiency and environmental footprint. Additional fundamental science topics of interest to this program include the study of: advanced fuel cell systems or fuel cell components for transportation propulsion or grid energy storage applications; flow batteries for stationary energy storage applications including alternative redox chemistries (e.g., organic, inorganic, organometallic, macromolecular) and operating strategies (e.g., redox-mediation, suspensions); and photocatalytic or photoelectrochemical processes and devices for the splitting of water into hydrogen gas or for the reduction of carbon dioxide to liquid or gaseous fuels. Projects that largely focus on developing fundamental understanding of the catalytic reaction mechanisms and structure-function relationships may be more appropriate as submissions to the CBET Catalysis program (CBET 1401). Projects submitted to the Electrochemical Systems program are expected to develop fundamental, molecular-level understanding of the key chemical reaction and transport phenomena barriers to improved system-level performance. Innovative proposals outside of these specific interest areas may be considered. However, prior to submission, it is recommended that the Principal Investigator contact the program director to avoid the possibility of the proposal being returned without review. Referrals to other programs within NSF: Proposals that focus on electric-field driven separations such as dielectrophoresis should be directed to theInterfacial Engineeringprogram (CBET 1417). Proposals that focus on thermal management of energy storage devices and systems should be submitted to theThermal Transport Processesprogram (CBET 1406). Proposals that focus on improving device and system performance of primarily organic, inorganic, and hybrid photovoltaic (PV) technologies, including perovskites, may be more appropriate as submissions to the Electronics, Photonics, and Magnetic Devices program in Engineering's Division of Electrical, Communications, and Cyber Systems (ECCS 1517). PV materials proposals that focus on the material science may be considered in the Division of Materials Research of the Directorate for Mathematical and Physical Sciences. Proposals that focus on the generation of thermal energy by solar radiation should be directed to theThermal Transport Processesprogram (CBET 1406). INFORMATION COMMON TO MOST CBET PROGRAMS Proposals should address the novelty and/orpotentially transformative natureof the proposed work compared to previous work in the field. Also, it is important to address why the proposed work is important in terms of engineering science, as well as to also project the potential impact on society and/or industry of success in the research. The novelty or potentially transformative nature of the research should be included, as a minimum, in the Project Summary of each proposal. The duration of unsolicited proposal awards in CBET is generally up to three years. Single-investigator award budgets typically include support for one graduate student (or equivalent) and up to one month of principal investigator time per year(awards for multiple investigator projects are typically larger). Proposal budgets that are much larger than typical should be discussed with the Program Director prior to submission. Proposers can view budget amounts and other information from recent awards made by this program via the What Has Been Funded (Recent Awards Made Through This Program, with Abstracts) link towards the bottom of this page. Faculty Early Career Development(CAREER)program proposals are strongly encouraged. Award duration is five years.The submission deadline for Engineering CAREER proposals is in July every year. Learn more in theCAREER program description. Proposals for Conferences, Workshops, and Supplements: PIs are strongly encouraged to discuss their requests with the Program Director before submission of the proposal. Grants forRapid Response Research(RAPID)andEArly-concept Grants for Exploratory Research(EAGER)are also considered when appropriate. Please note that proposals of these types must be discussed with the program director before submission.Grant Opportunities for Academic Liaison with Industry (GOALI)proposals that integrate fundamental research with translational results and are consistent with the application areas of interest to each program are also encouraged. Please note that RAPID, EAGER, and GOALI proposals can be submitted anytime during the year. Details about RAPID, EAGER, and GOALI are available in theProposal &amp; Award Policies &amp; Procedures Guide(PAPPG), Part 1, Chapter II, Section E: Types of Proposals. COMPLIANCE: Proposals which are not compliant with theProposal &amp; Award Policies &amp; Procedures Guide (PAPPG)will be returned without review.

rolling
sciencetechnology

Free to search & build · $99 one-time to unlock the application pack · No subscription

Elucidating the effects of broadly neutralizing antibody treatment on neuroinflammation and CNS Persistence in SIV-ART macaques

open

NIMH - National Institute of Mental Health

PROJECT SUMMARY Cognitive impairment persists even with highly effective antiretroviral therapy (ART) in people with HIV (PWH). Persistent neuroinflammation is one of many factors that contributes to ongoing cognitive impairment in virally suppressed (vs)PWH. However, there is a critical gap in understanding the underlying cause of neuroinflammation and, as a result, no available therapies to target it. Long-acting broadly neutralizing antibodies (bNAbs) are considered the next generation of therapy for PWH. Currently, there are 50+ trials that involve bNAbs. Despite this substantial effort, there are no funded NIH studies focusing on if bNAb therapy in combination with ART may reduce neuroinflammation and improve cognitive function. As the mechanism of action for bNAbs is the rapid neutralization of virus and clearance of infected cells via engagement of the immune system, a downstream effect of this therapy may be lower levels of inflammation, as is observed with other Ab therapies. We have evidence that HIV-specific antibodies (Ab) play a protective role in the CNS, and others have shown that bNAb therapy enhances host Ab immunity to HIV and simian immunodeficiency virus (SIV). Therefore, our central hypothesis is that bNAb therapy will reduce neuroinflammation in the CNS, by directly eliminating infected cells capable of trafficking to brain resulting in a smaller CNS reservoir, neutralizing virus within the CSF, and indirectly by reducing peripheral inflammation, resulting in improved cognition. To test our hypothesis, we will use the SIVmac251 rhesus macaque model of HIV and an SIV-specific bNAb (ITS103). The SIV-infected ART-suppressed NHP model will allow us to assess the effects of bNAbs on CNS inflammation, reservoir, and cognition. Additionally, this model will allow us to determine if bNAbs have a direct effect on the CNS or indirect effect through altering peripheral inflammation. AIM 1: Determine if bNAb therapy during ART initiation reduces neuroinflammation. To model ART-naïve PWH receiving bNAb therapy simultaneously with ART, we will treat SIV-infected macaques with ITS103 at the time of ART initiation. We will assess the effect of acute ITS103 therapy on 1) brain macrophage transcription, 2) CNS reservoir size, and 3) cognitive performance after 1 year of suppression compared to ART alone. AIM 2: Determine if bNAb therapy during chronic ART reduces neuroinflammation. To model vsPWH receiving bNAb therapy combined with ongoing ART, we will treat SIV-infected macaques with ITS103 after 36 weeks of ART suppression and assess the effect of chronic bNAb therapy on the same outcomes as in Aim 1. AIM 3: Determine if bNAbs have a direct or indirect effect on neuroinflammation. To determine if ITS103 plays a direct role in the CNS we will assess 1) ITS103 concentrations in the CSF, 2) viral decay rates in CSF, 3) central vs. peripheral inflammation and 4) plasma and CSF Ab neutralization capacity with and without bNAb therapy. Our in vivo study utilizing a native SIV and SIV-specific bNAb is highly innovative as it will be the first to study on the effects of bNAb therapy on neuroinflammation and evaluate if this is a viable treatment for PWH.

Up to $1.1M
2031-01-31
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Elucidating the role of interleukin-22 in Hirschsprung Associated enterocolitis pathogenesis

open

NIDDK - National Institute of Diabetes and Digestive and Kidney Diseases

PROJECT SUMMARY/ABSTRACT Hirschsprung disease associated enterocolitis (HAEC) is the leading cause of death in children who lack enteric neurons in distal bowel, a birth defect called Hirschsprung disease. The etiology of HAEC is not well understood, but hypothesized disease mechanisms include altered gut microbes (“dysbiosis”), abnormal mucosal immune system and epithelial barrier defects. To date, there are no immune-targeted therapies to treat or prevent HAEC, but new treatments are needed. This proposal builds on the candidate’s preliminary data suggesting interleukin 22 (IL22) critically modulates HAEC risk and HAEC severity. The central hypothesis is that enteric nervous system (ENS) signaling induces IL22 release and facilitates IL22 epithelial responses to enhance mucosal immunity and strengthen epithelial barrier functions that prevent enterocolitis. The Piebald lethal (sl/sl) Hirschsprung disease mouse model of HAEC will be used, as survival of sl/sl mice is dramatically (> 3-fold) altered by diet (Tjaden et al, in BioRxiv and submitted) and IL22 mRNA is much higher in sl/sl fed a Protective diet that extends median survival (“late onset HAEC”). Aim 1 will define the cellular source(s) of IL22 from bowel regions of sl/sl model mice that develop early or late onset HAEC. In parallel, this aim tests the hypothesis that IL22 prevents HAEC, by using genetic and pharmacologic strategies to alter IL22 levels. Aim 2 will precisely define the role of IL22 on epithelial integrity, stem cell renewal and differentiation in organoids derived from sl/sl mice with early or late onset HAEC and from children with Hirschsprung disease with or without HAEC. Organoids facilitate studies of epithelial stem cell biology and IL22-epithelium interactions in the absence of microbes, neurons, or diffusible small molecules such as neurotransmitters. Collectively, these studies will determine cellular sources of IL22, the effect of ENS cells on IL22 secretion, the role of IL22 in enterocolitis, and the impact of Hirschsprung disease associated aganglionosis on epithelial cell biology. These studies build on the candidate’s training as a pediatric gastroenterologist, who has clinical exposure to the diagnosis and treatment of children with Hirschsprung disease and HAEC, as well as her basic science training in enteric nervous system biology. As the work proceeds, she will become an expert in mucosal immunology and epithelial biology with a focus on neuro-immune and neuro-epithelial interactions. The mentors, Dr. Robert Heuckeroth, and Dr. Kathryn Hamilton are experts in ENS biology and epithelial biology respectively. Both mentors have a strong commitment to mentorship and NIH funding track records. Experiments will be conducted at the Children’s Hospital of Philadelphia and Perelman School of Medicine at the University of Pennsylvania, a collegial, collaborative and state-of-the art institution. The professional development and training plan will position the candidate as a successful pediatrician-scientist, who is focused on the prevention and treatment of Hirschsprung associated enterocolitis. These studies should determine if IL22-based therapies would likely be successful in HAEC, and if a human clinical trial is appropriate.

Up to $159K
2031-01-31
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Endocrine Disrupting Chemicals and Female Reproductive Health

open

NIEHS - National Institute of Environmental Health Sciences

The ovary is a particularly important reproductive organ because it is essential for the production of oocytes and sex steroid hormones. Unfortunately, exposure to environmental endocrine disrupting chemicals (EDCs) can damage the ovary. EDC-induced ovarian damage leads to female reproductive dysfunction, which cannot be prevented or treated by eliminating EDC exposures. It is extremely important to understand the mechanisms by which EDCs damage the ovary so that we can develop strategies to prevent and/or treat EDC-induced reproductive toxicity. Towards this end, the overall goals of the proposed RIVER program are to: 1) unravel the intricate mechanisms underlying EDC-induced ovarian damage and female reproductive dysfunction, 2) decode the multigenerational effects of EDCs on ovarian function and female reproductive capacity, and 3) bridge the gap to human health by elucidating how EDC exposure is associated with ovarian function and reproductive aging in a prospective cohort of midlife women. To address these urgent clinical and public health needs, we will use single cell RNAseq to identify novel pathways of EDC-induced toxicity at the single cell level in the ovary as well as other female reproductive organs, spatial transcriptomics to map EDC-induced changes in gene activity while preserving spatial context, advanced 3-D ovarian follicle culture techniques to uncover the direct effects of EDCs on the ovary in a controlled environment, pioneering in vitro and in vivo experiments that include environmentally relevant individual EDCs and mixtures of EDCs, state-of-the-art LC-MS techniques to detect the concentrations of EDCs that reach the female reproductive organs and determine the ability of the ovary to detoxify or bioactive EDCs, high resolution LC-MS/MS techniques to conduct quantitative global and targeted proteomics, whole genome methylome analysis or reduced-representation bisulfite sequencing (RRBS) to identify the effects of EDCs on cell-type specific DNA methylation patterns in the ovary, spatial epigenome- transcriptome co-profiling to localize EDC-induced changes in specific cell types in the ovary and determine the interaction between EDC-induced methylation and gene expression changes, CRISPR-Cas 9 technology to correct EDC-induced DNA methylation errors in cells, LC-MS techniques at the forefront of the field to measure selected EDCs and biomarkers of reproductive function and aging in a prospective cohort of midlife women, and leading edge statistical models to assess associations between EDC mixtures and selected biomarkers/outcomes. The applicant is uniquely qualified to successfully lead the RIVER program. The applicant served as PI on 24 NIH-funded awards and her research produced over 325 peer-reviewed publications. The applicant has demonstrated a broad vision, conducted ground-breaking research, and made seminal contributions to the understanding of the impacts of EDCs on the ovary and female reproduction. The flexible and sustained RIVER support will help the applicant to continue pioneering and impactful research, mentoring, and leadership in environmental health sciences.

Up to $929K
2034-01-31
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Endothelial TLR2/4 signaling in sex dimorphism of pathological angiogenesis and aging

open

NIA - National Institute on Aging

ABSTRACT Numerous studies have demonstrated the "male-female health-survival paradox," where females exhibit a higher burden of age-associated disorders yet live longer than males. This paradox arises from a greater burden of chronic diseases in females, particularly those with a strong inflammatory or autoimmune component. A key factor contributing to inflammation-associated pathologies is endothelial cell (EC) dysfunction. This proposal aims to elucidate the molecular basis of sex-dependent differences in EC functions that may shape the outcomes of angiogenesis-driven diseases and aging in general. Our recent findings revealed that female ECs exhibit higher inflammation and reactive oxygen species (ROS) accumulation, with reduced angiogenic potential. These findings suggest biological sexual dimorphism in EC function, although the molecular mechanisms underlying these differences remain unclear. Toll-like receptors (TLRs), key innate proinflammatory mediators, recognize molecular patterns, including both pathogens and endogenous ligands generated by tissue damage and excessive oxidation. Analysis of multiple RNA sequencing datasets revealed that TLR2 and TLR4 pathways, specifically in ECs, are among the most significantly dysregulated in inflammation-associated pathologies and senescence. Moreover, gene expression profiling demonstrates that TLR2/4-related pathways are upregulated in female ECs compared to male ECs in vivo and in vitro. This upregulation seems to be driven by both increased TLR expression and higher levels of endogenous TLR ligands in females, collectively amplifying inflammatory responses. In vivo vascularization models showed a more substantial inflammatory component coupled with impaired angiogenesis and vascular remodeling in females. In EC-specific dual TLR2/4 knockout mice, eliminating these receptors abolished the pronounced differences between females and males in vascular models. This indicates that TLR2/4 pathways dominate sex-related differences in EC functions. While sex- specific differences in vascular diseases can arise from genetic, hormonal, or environmental factors, most research to date has focused on sex hormones. This project aims to shift the focus toward exploring the genetic components, particularly the role of endothelial TLR2 and TLR4 pathways in mediating these differences. Herein, we propose a new hypothesis: TLR2 and TLR4 on the endothelium are critical regulators of vascular responses, and augmented TLR2/4 activation contributes to increased vascular inflammation in females. We propose that endothelial TLR2/4-signaling is required for timely injury responses and tissue regeneration by regulating cytokine production and recruitment of inflammatory cells in females. We will utilize innovative transgenic mouse models, a pharmacological approach using phospholipid-based Reactive Carbonyl Scavengers (RCS) limiting the generation of TLR2 and TLR4, and state-of-the-art proteomics. Our studies will provide insights into the role of innate immune mechanisms in ECs and enhance our understanding of the genetic mechanisms responsible for sex differences in vascular pathologies, leading to more efficient therapeutics for both men and women.

Up to $659K
2030-11-30
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

Engineering Naturally Occurring Multi-Heme Cytochrome Nanowires into Self-Assembled Nanogels

open

NINDS - National Institute of Neurological Disorders and Stroke

Abstract The development of advanced biomaterials capable of electrical signal transmission is vital for regenerative medicine and bioelectronics, with injectable conductive nanogels showing significant promise. While naturally occurring, biocompatible extracellular conductive nanowires (ECNs) from anaerobic bacteria, such as the multi- heme cytochrome proteins, offer a compelling solution to the limitations of synthetic materials (e.g., solubility and biocompatibility), their widespread application is currently limited by challenges in their rational engineering and efficient production. Specifically, the recently discovered ECN protein family has not yet been integrated into recent novel AI protein design tools, and their complex in vivo assembly mechanisms remain poorly understood. This proposal will bridge these gaps by first identifying and engineering OmcE cytochrome nanowires that form large, ordered bundles. This involves comprehensive large-scale genomic and AlphaFold3-guided virtual screens to pinpoint novel OmcE homologs, followed by high-resolution cryo-EM characterization to elucidate their structural details and bulk conductivity measurements to confirm electrical properties. Subsequently, state- of-the-art AI tools will be employed to engineer novel OmcE variants exhibiting robust self-assembly into advanced conductive nanogels. Simultaneously, another major objective is to visualize the OmcE secretion system in situ to unravel its intricate assembly mechanism. We hypothesize that these nanowires assemble via a large outer membrane porin, analogous to the chaperone-usher pathway. Sub-tomogram averaging will be utilized to reconstruct the porin's structure at sub-nanometer resolution, providing critical molecular blueprints for the rational design of OmcE variants with enhanced self-assembly properties and enabling their efficient recombinant overexpression. Ultimately, this work will facilitate the precise engineering of "super" OmcE nanowires for conductive nanogels, offering transformative insights into their biosynthesis and establishing a foundation for a new generation of protein-based bioelectronic materials.

Up to $44K
2029-04-30
health research

Free to search & build · $99 one-time to unlock the application pack · No subscription

FindGrants Pro

Save unlimited matches with FindGrants Pro — $19/mo

Includes 1 application credit per month, weekly emailed grant alerts matching your org, and deadline reminders. Cancel anytime.

See Pro details

Found a grant that fits? Get matched to even more.

Answer a 2-minute questionnaire and our engine scores every grant in the database against your organization — surfacing opportunities you might miss browsing manually.

Get Personalized Matches — Free