Understanding how some animals regrow lost limbs without scarring
Official title: Decoding the metabolic requirements for vertebrate appendage regeneration
Funded at University of Washington · NIH-10992177 · Data updated 2026-11-12
This study is looking at how certain animals, like tadpoles, can grow back lost body parts without any scars, and it hopes to find out what happens in their bodies that helps them do this, which could one day help people heal better too.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | University of Washington NIH-funded |
| Lab location | 1 site (Seattle, United States) |
| Project start | January 1, 2023 |
| Project end | November 30, 2026 |
| Funding year | 2025 |
| Award (this year) | $378,212 |
| NIH project number | 5R01GM148490-03 |
| Project ID | NIH-10992177 on NIH RePORTER |
Who could benefit from this research
✓Could help
Ideal candidates for this research are individuals interested in regenerative medicine and those suffering from injuries that result in the loss of limbs or tissues.
✕Less likely to help
Patients with conditions unrelated to limb regeneration or those who do not have any injuries may not benefit from this research.
What this research studies
This research investigates the metabolic processes that allow certain animals, like Xenopus tadpoles, to regenerate lost appendages without scarring. By examining how injury triggers metabolic changes that promote cell growth and proliferation, the study aims to uncover the biochemical pathways involved in this regenerative process. The researchers will compare regenerative and non-regenerative tissues to identify the specific metabolic requirements necessary for successful limb regrowth. This work could provide insights into enhancing regenerative capabilities in other organisms, including humans.
Why it matters
Potential benefit: If successful, this research could lead to breakthroughs in regenerative medicine, potentially allowing humans to heal and regrow lost limbs or tissues.
How similar studies have gone: Previous research has shown promising results in understanding regeneration in animal models, but this specific metabolic approach is relatively novel.
Where this research is happening
-
University of Washington
Seattle, United States Active
Researchers
- Principal investigator: Wills, Andrea Elizabeth — University of Washington
- Study coordinator: Wills, Andrea Elizabeth
Related research
Other NIH-funded projects on the same topics.
-
Making genetic testing more accessible to the public
This study is all about making it easier for people at risk of certain cancers, like breast, ovarian, and colon cancers, to get genetic testing, so we can find out what helps them access these important services and understand how they can benefit from them.
-
Breast cancer diagnosis in low-resource settings using millifluidics and fast digital imaging in Ghana
A new project will test a fast, low-cost way to diagnose breast cancer at the point of care in Ghana using small-batch fluidics and direct digital imaging.
-
Binaural Hearing and Speech in Noise in Children
This project explores how children hear speech in noisy classrooms using how the two ears work together to see if binaural processing differences explain why some kids struggle more than others.
-
Neural circuits that control pain aversion in the brain
Researchers are exploring how a specific brain area helps people feel and avoid pain, with potential to lead to better pain treatments.
-
United World Antiviral Research Network (UWARN)
A collaborative, international effort is testing new virus surveillance and evolution ideas to help people living with HIV and communities in LMICs stay safer from current and emerging viruses.
-
HF endotypes in heart failure using ethical multi-modal AI and molecular data
A patient-friendly project that uses advanced AI and multiple kinds of health data to identify distinct heart failure subtypes that could guide personalized care.
About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.