Opportunity Information: Apply for PAR 13 115

  • The National Institutes of Health in the health sector is offering a public funding opportunity titled "Improvement of Animal Models for Stem Cell Based Regenerative Medicine (R21)" and is now available to receive applicants.
  • Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 93.121 Oral Diseases and Disorders Research 93.351 Research Infrastructure Programs 93.837 Cardiovascular Diseases Research 93.846 Arthritis, Musculoskeletal and Skin Diseases Research.
  • This funding opportunity was created on Feb 14, 2013 and posted on Feb 11, 2013.
  • Applicants must submit their applications by May 7, 2016. (Agency may still review applications by suitable applicants for the remaining/unused allocated funding in 2026.)
  • Each selected applicant is eligible to receive up to $200,000.00 in funding.
  • Eligible applicants include: Private institutions of higher education City or township governments For profit organizations other than small businesses Nonprofits having a 501(c)(3) status with the IRS, other than institutions of higher education Others (see text field entitled Additional Information on Eligibility for clarification) Public housing authorities/Indian housing authorities Nonprofits that do not have a 501(c)(3) status with the IRS, other than institutions of higher education Independent school districts State governments Native American tribal governments (Federally recognized) Public and State controlled institutions of higher education Small businesses County governments Special district governments Native American tribal organizations (other than Federally recognized tribal governments).
  • Other Eligible Applicants include the following Alaska Native and Native Hawaiian Serving Institutions Asian American Native American Pacific Islander Serving Institutions (AANAPISISs) Eligible Agencies of the Federal Government Faith based or Community based Organizations Hispanic serving Institutions Historically Black Colleges and Universities (HBCUs) Indian/Native American Tribal Governments (Other than Federally Recognized) Non domestic (non U.S.) Entities (Foreign Organizations) Regional Organizations Tribally Controlled Colleges and Universities (TCCUs) U.S. Territory or Possession Non domestic (non U.S.) Entities (Foreign Institutions) are eligible to apply. Non domestic (non U.S.) components of U.S. Organizations are eligible to apply. Foreign components, as defined in the NIH Grants Policy Statement, are allowed.
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Opportunity Summary:

The National Institutes of Health (NIH) funding opportunity PAR 13-115, titled "Improvement of Animal Models for Stem Cell Based Regenerative Medicine (R21)," supported exploratory and developmental projects intended to strengthen the scientific foundation for stem cell-based regenerative therapies. Using the R21 mechanism, the program emphasized early-stage, high-impact studies that could rapidly generate proof-of-concept data, new approaches, or enabling resources rather than long, fully mature research programs. The central idea was that better animal stem cell characterization and more predictive animal disease models would reduce uncertainty when translating regenerative medicine strategies toward human clinical use.

The research scope focused on three main themes. First, it encouraged comparative studies between animal and human stem cells to clarify similarities and differences that matter for translation. This includes work that helps researchers choose the most informative species or model system for a particular regenerative medicine question, especially where current models do not accurately reflect human biology, disease progression, or therapeutic response. Second, the FOA highlighted technology development for stem cell characterization and transplantation, meaning new or improved tools, methods, assays, imaging approaches, tracking strategies, or transplantation techniques that make it easier to analyze stem cell behavior, fate, integration, function, and safety in vivo. Third, it prioritized improving existing animal models and creating new ones that better capture human disease conditions in ways relevant to stem cell-based interventions, including models that allow more realistic testing of engraftment, tissue repair, functional recovery, immune interactions, and longer-term outcomes.

This opportunity was categorized as a discretionary grant program with a health research focus and was associated with multiple CFDA program areas, including oral diseases and disorders research (93.121), research infrastructure programs (93.351), cardiovascular diseases research (93.837), and arthritis, musculoskeletal, and skin diseases research (93.846). No cost sharing or matching was required, lowering barriers for applicants proposing method development or model-building work that can be difficult to fund through more traditional mechanisms.

The award structure included an award ceiling of $200,000, consistent with an R21-style exploratory budget cap. The FOA was posted on February 11, 2013, created on February 14, 2013, and remained open through a final closing date of May 7, 2016, after which it was archived on June 7, 2016. As a result, it served as a time-limited window for proposing new model systems and translationally focused stem cell research tools aligned with NIH priorities during that period.

Eligibility was broad and included a wide range of domestic and international organizations. Eligible applicants covered private and public institutions of higher education, nonprofit organizations (including 501(c)(3) and non-501(c)(3) entities), for-profit organizations (including small businesses and other for-profits), and various government entities such as city or township governments, county governments, state governments, special district governments, and tribal governments. The eligibility language also explicitly included many institution types and communities NIH often aims to reach, such as Historically Black Colleges and Universities (HBCUs), Hispanic-Serving Institutions, Tribally Controlled Colleges and Universities (TCCUs), Alaska Native and Native Hawaiian Serving Institutions, and Asian American Native American Pacific Islander Serving Institutions (AANAPISIs), as well as faith-based or community-based organizations where appropriate. Importantly, non-U.S. entities and foreign institutions were eligible to apply, and foreign components of U.S. organizations were allowed as defined by NIH policy.

Operationally, NIH served as the sponsoring agency, and the full announcement and policy details were provided via the NIH Grants Guide webpage listed in the opportunity. For technical access issues or linking problems, the NIH Office of Extramural Research (OER) webmaster contact was provided. Overall, PAR 13-115 was designed to push the field toward animal models and stem cell methodologies that more reliably predict human outcomes, ultimately helping regenerative medicine move from promising lab findings to therapies that can be tested and used with greater confidence.

Frequently Asked Questions (FAQ)

What is PAR 13-115?

PAR 13-115 is a National Institutes of Health (NIH) funding opportunity announcement titled "Improvement of Animal Models for Stem Cell Based Regenerative Medicine (R21)." It supported exploratory and developmental research projects aimed at improving animal models and related methods used in stem cell-based regenerative medicine.

What is the main purpose of this funding opportunity?

The main purpose was to strengthen the scientific foundation for stem cell-based regenerative therapies by improving animal stem cell characterization and developing more predictive animal disease models. The overall intent was to reduce uncertainty when translating regenerative medicine strategies toward human clinical use.

What grant mechanism does this opportunity use?

This opportunity used the NIH R21 mechanism, which is intended for exploratory and developmental research.

What kinds of projects were emphasized under the R21 approach?

The program emphasized early-stage, high-impact studies that could rapidly generate proof-of-concept data, new approaches, or enabling resources, rather than long, fully mature research programs.

What research areas or themes were in scope for PAR 13-115?

The scope focused on three main themes: (1) comparative studies between animal and human stem cells to clarify translation-relevant similarities and differences; (2) technology development for stem cell characterization and transplantation (tools, methods, assays, imaging, tracking, and transplantation techniques); and (3) improving existing animal models or creating new ones that better capture human disease conditions relevant to stem cell-based interventions.

What is meant by comparative studies between animal and human stem cells?

Comparative studies were encouraged to clarify how animal stem cells and human stem cells are similar or different in ways that matter for translation to humans. This includes work that helps researchers select the most informative species or model system for a specific regenerative medicine question, especially when existing models do not reflect human biology, disease progression, or therapeutic response.

What types of technology development were highlighted?

The FOA highlighted developing or improving tools, methods, assays, imaging approaches, tracking strategies, and transplantation techniques that make it easier to analyze stem cell behavior, fate, integration, function, and safety in vivo.

What kinds of animal model improvements were prioritized?

It prioritized improving existing animal models and creating new ones that better represent human disease conditions in ways relevant to stem cell-based interventions. Examples of model capabilities mentioned include more realistic testing of engraftment, tissue repair, functional recovery, immune interactions, and longer-term outcomes.

How does this program relate to moving regenerative medicine toward human clinical use?

By promoting better animal stem cell characterization and more predictive disease models, the program aimed to make preclinical findings more reliable for predicting human outcomes, reducing uncertainty before clinical testing.

What is the funding category for this opportunity?

It was categorized as a discretionary grant program with a health research focus.

Which CFDA program areas were associated with PAR 13-115?

The opportunity was associated with multiple CFDA program areas, including oral diseases and disorders research (93.121), research infrastructure programs (93.351), cardiovascular diseases research (93.837), and arthritis, musculoskeletal, and skin diseases research (93.846).

Was cost sharing or matching required?

No. The opportunity stated that no cost sharing or matching was required.

What was the award ceiling?

The award ceiling was $200,000, consistent with an R21-style exploratory budget cap.

When was the FOA posted and when did it close?

The FOA was posted on February 11, 2013, created on February 14, 2013, and remained open until the final closing date of May 7, 2016. It was archived on June 7, 2016.

Is PAR 13-115 still open for applications?

No. Based on the provided dates, the opportunity reached its final closing date on May 7, 2016 and was archived on June 7, 2016.

Who was the sponsoring agency?

The sponsoring agency was the National Institutes of Health (NIH).

Where were the full announcement and policy details provided?

The full announcement and policy details were provided via the NIH Grants Guide webpage listed in the opportunity.

What types of organizations were eligible to apply?

Eligibility was broad and included domestic and international organizations. Eligible applicants included private and public institutions of higher education; nonprofit organizations (including 501(c)(3) and non-501(c)(3) entities); for-profit organizations (including small businesses and other for-profits); and government entities such as city or township governments, county governments, state governments, special district governments, and tribal governments.

Were minority-serving institutions specifically included in eligibility?

Yes. The eligibility language explicitly included institution types and communities such as Historically Black Colleges and Universities (HBCUs), Hispanic-Serving Institutions, Tribally Controlled Colleges and Universities (TCCUs), Alaska Native and Native Hawaiian Serving Institutions, and Asian American Native American Pacific Islander Serving Institutions (AANAPISIs).

Could faith-based or community-based organizations apply?

Yes. The eligibility description explicitly included faith-based or community-based organizations where appropriate.

Were non-U.S. entities or foreign institutions eligible?

Yes. Non-U.S. entities and foreign institutions were eligible to apply.

Were foreign components of U.S. organizations allowed?

Yes. Foreign components of U.S. organizations were allowed as defined by NIH policy.

What kind of support was mentioned for technical access issues?

For technical access issues or linking problems, a contact for the NIH Office of Extramural Research (OER) webmaster was provided in the opportunity information.

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Previous opportunity: Improvement of Animal Models for Stem Cell Based Regenerative Medicine (R01)

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