Defining Lineage Plasticity and Endogenous Regeneration Capacity of Dental, Oral, and Craniofacial Tissues (R21 Clinical Trial Not Allowed) | RFA DE 20 007

Opportunity Information: Apply for RFA DE 20 007

The National Institutes of Health (NIH) offered this discretionary grant opportunity, RFA-DE-20-007, titled "Defining Lineage Plasticity and Endogenous Regeneration Capacity of Dental, Oral, and Craniofacial Tissues (R21 Clinical Trial Not Allowed)." It uses the NIH R21 mechanism, which is generally meant to support early-stage, exploratory, and higher-risk research aimed at generating foundational insights and proof-of-concept data rather than funding large, long-term projects. The focus of this specific opportunity is on basic and translationally oriented biology in dental, oral, and craniofacial (DOC) tissues, and it explicitly does not allow clinical trials, meaning the supported work must remain on the preclinical or mechanistic side rather than testing interventions in human participants.

Scientifically, the central goal is to understand whether cells that live in postnatal (after birth) dental, oral, and craniofacial tissues can regain or acquire developmental "plasticity" when those tissues are challenged. In practical terms, the program is asking investigators to determine if resident cells can switch identity in living organisms (in vivo) through lineage reprogramming or trans-differentiation, particularly in response to injury or other environmental stresses. The underlying idea is that tissues in the mouth and craniofacial region may contain cell populations that, under the right conditions, can change from one functional cell type to another and help rebuild damaged structures. The opportunity emphasizes not only detecting these lineage changes, but also demonstrating that any newly generated cells are functionally competent, meaning they behave like authentic cells of the new lineage and contribute meaningfully to tissue repair or regeneration rather than simply expressing a few marker genes.

From a regeneration perspective, this call is centered on endogenous repair, meaning the body’s own resident cells and natural repair processes, not primarily on transplantation of outside cells. It is essentially a push to map and define the natural limits and triggers of regeneration in DOC tissues: what cell types can change fate, what kinds of injuries or stress signals provoke that change, what molecular pathways govern the process, and whether the result can restore structure and function. Projects responsive to this type of topic often rely on modern lineage-tracing strategies, single-cell profiling, spatial mapping, and mechanistic perturbations in relevant animal models or organotypic systems, but the unifying theme is understanding in vivo cell fate switching and its contribution to repair.

The funding instrument is a grant under the health-related funding activity category, listed under CFDA number 93.121. The award ceiling for this opportunity is $200,000. The posting was created on March 12, 2020, and the original closing date was July 31, 2020. While the listing does not specify the exact number of expected awards in the provided source text, it is structured as a competitive NIH funding announcement where multiple awards are typically made depending on appropriations and application quality.

Eligibility is broad and includes many types of U.S.-based organizations and certain international entities. Eligible applicants include state, county, and local governments (including city or township governments), special district governments, and independent school districts, as well as public and state-controlled institutions of higher education and private institutions of higher education. Tribal eligibility is extensive, covering federally recognized Native American tribal governments as well as other Native American tribal organizations that are not federally recognized tribal governments. The announcement also allows public housing authorities/Indian housing authorities, nonprofits with or without 501(c)(3) status (excluding higher education institutions when categorized separately), for-profit organizations other than small businesses, and small businesses. In addition, the opportunity highlights specific categories of "other eligible applicants," including Alaska Native and Native Hawaiian Serving Institutions, Asian American Native American Pacific Islander Serving Institutions (AANAPISIs), Hispanic-serving Institutions, Historically Black Colleges and Universities (HBCUs), Tribally Controlled Colleges and Universities (TCCUs), faith-based or community-based organizations, eligible federal agencies, regional organizations, U.S. territories or possessions, and non-domestic (non-U.S.) entities (foreign organizations). This breadth suggests an intent to encourage a diverse applicant pool and support research capacity across many institution types and geographic contexts.

Overall, this grant opportunity is aimed at advancing fundamental knowledge about how dental, oral, and craniofacial tissues respond to damage at the cellular and lineage level, with an emphasis on whether resident postnatal cells can be coaxed by injury or stress into switching fate and producing functional replacement cells. The long-range value of this work is that defining the rules of lineage plasticity and endogenous regeneration could eventually inform new regenerative strategies for craniofacial and oral health conditions, but the funded projects themselves must stay within non-clinical, mechanistic research boundaries.

• The National Institutes of Health in the health sector is offering a public funding opportunity titled "Defining Lineage Plasticity and Endogenous Regeneration Capacity of Dental, Oral, and Craniofacial Tissues (R21 Clinical Trial Not Allowed)" and is now available to receive applicants.
• Interested and eligible applicants and submit their applications by referencing the CFDA number(s): 93.121.
• This funding opportunity was created on 2020-03-12.
• Applicants must submit their applications by 2020-07-31. (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: State governments, County governments, City or township governments, Special district governments, Independent school districts, Public and State controlled institutions of higher education, Native American tribal governments (Federally recognized), Public housing authorities/Indian housing authorities, Native American tribal organizations (other than Federally recognized tribal governments), Nonprofits having a 501 (c) (3) status with the IRS, other than institutions of higher education, Nonprofits that do not have a 501 (c) (3) status with the IRS, other than institutions of higher education, Private institutions of higher education, For-profit organizations other than small businesses, Small businesses, Others.

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