How cells build strong collagen fibers in tendons and ligaments
Unraveling the Mechanism of Mechanotransduction in Hierarchical Collagen Fiber Formation
This work looks at how cells' pulling forces and stretch‑sensing channels help form strong collagen fibers that could one day improve healing for people with torn tendons, ligaments, or meniscus.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Virginia Commonwealth University NIH-funded |
| Lab location | 1 site (Richmond, United States) |
| Project ID | NIH-11285275 on NIH RePORTER |
What this research studies
From a patient's view, the team studies ligament fibroblast cells to learn how cellular contraction and stretch‑activated ion channels (TRPV4 and Piezo1) shape collagen into larger, stronger fibers. They will use more realistic 3D and engineered tissue models rather than simple flat surfaces or unorganized gels to better mimic real tissues. By altering integrins, focal adhesion signaling, the actomyosin network, and the ion channels, they will watch how mechanical cues guide fiber formation. The goal is to use those insights to design better tissue replacements and ways to encourage repair in the injured body.
Who could benefit from this research
Good fit: People with torn or damaged tendons, ligaments, or menisci are the patient group most likely to benefit from this line of work in the future.
Not a fit: Patients with conditions that do not involve collagen‑rich musculoskeletal tissues (for example, isolated nerve or metabolic diseases) are unlikely to benefit directly from these findings.
Why it matters
Potential benefit: If successful, this work could enable new methods to rebuild or heal torn tendons, ligaments, and menisci so they regain strength and function.
How similar studies have performed: Previous laboratory and animal studies have suggested roles for cellular contraction and channels like TRPV4 and Piezo1 in collagen alignment, but applying those findings to hierarchical, fiber‑forming tissues is relatively new.
Where this research is happening
Richmond, United States
- Virginia Commonwealth University — Richmond, United States (Active)
Researchers
- Principal investigator: Puetzer, Jennifer — Virginia Commonwealth University
- Study coordinator: Puetzer, Jennifer
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 below.