Novel Lentiviral Models of HIV Neuropathogenesis (R21) | Apply Online

Opportunity Summary:

The Novel Lentiviral Models of HIV Neuropathogenesis (R21) opportunity (Funding Opportunity Number PAS 08 179) is an NIH grant announcement focused on pushing forward better experimental model systems for studying the neurologic complications of HIV/AIDS, often referred to as NeuroAIDS. The central idea is that progress in understanding how HIV affects the nervous system, and how those effects might be prevented or treated, depends heavily on having model systems that realistically capture key features of lentiviral infection in the brain and spinal cord. The announcement is explicitly interested in models that can be used to study neurologic injury and dysfunction associated with AIDS, including situations where drug use or alcohol use may be part of the disease context.

The scientific purpose is to support the development and/or refinement of animal models or ex vivo cell culture models that allow researchers to investigate mechanisms of HIV-related neuropathogenesis. While HIV itself does not infect many common laboratory animals in a way that mirrors human disease, the announcement points to the growing strength of SIV-based systems as evidence that well-designed lentiviral models can provide powerful and biologically informative platforms. By improving these models, the NIH aims to help the field answer core questions about how lentiviruses trigger nervous system pathology, how viral and host factors interact in neural tissues, and how co-factors such as substance use might modify disease course. Ultimately, the models supported under this FOA are meant to accelerate therapeutic development and improve the biological understanding needed to design interventions for patients experiencing neurological complications of HIV/AIDS.

This funding opportunity uses the NIH R21 mechanism, which is generally meant for exploratory, developmental, or proof-of-concept projects that can open up new directions quickly. In practical terms, that means the FOA is well-suited for teams proposing innovative approaches, early-stage model development, or targeted refinements that substantially improve existing systems rather than large, mature research programs. The announcement also notes that it runs in parallel with an FOA of identical scientific scope that uses the R01 mechanism (PAS 08 178), which is typically a better fit for more extensive, fully developed projects with broader aims and longer-term research plans. For even smaller, limited-scope efforts specifically tied to developing animal or ex vivo models, the NIH points applicants toward the R03 mechanism as another potential route.

Multiple NIH Institutes are participating, reflecting the cross-cutting nature of NeuroAIDS research. The National Institute of Neurological Disorders and Stroke (NINDS) is a lead player given the neurological focus, while the National Institute on Drug Abuse (NIDA) and the National Institute on Alcohol Abuse and Alcoholism (NIAAA) underscore the interest in understanding how drugs and alcohol may interact with HIV-related nervous system disease. The National Institute of Mental Health (NIMH) also participates, aligning with the cognitive, behavioral, and neuropsychiatric dimensions that can accompany HIV infection and CNS involvement.

From an administrative and eligibility standpoint, PAS 08 179 is a discretionary grant opportunity under the NIH, categorized within education and health-related funding activity. It does not require cost sharing or matching. The award ceiling listed is $200,000, consistent with the smaller, exploratory nature of R21 awards. The FOA is broadly open to a wide range of applicant types, including public and private institutions of higher education, nonprofits (including but not limited to 501(c)(3) organizations), small businesses, for-profit organizations (other than small businesses), and many government entities (state, county, city/township, special district). It also explicitly includes eligibility for organizations such as HBCUs, Hispanic-serving institutions, tribally controlled colleges and universities, Alaska Native and Native Hawaiian Serving Institutions, faith-based or community-based organizations, and certain non-U.S. entities (foreign organizations), as well as U.S. territories or possessions, among others.

Key dates show that the opportunity was posted June 18, 2008, with a closing date of May 7, 2011, and an archive date of June 7, 2011. While the announcement is archived now, it remains a useful reference for understanding NIH priorities and the kinds of model-development work that NIH has historically encouraged in the NeuroAIDS space, particularly at the intersection of neuroscience, infectious disease biology, mental health, and substance use research.

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Next opportunity: Exploratory Collaborations with National Centers for Biomedical Computing (R21)

Previous opportunity: Novel Lentiviral Models of HIV Neuropathogenesis (R01)

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