Cyr61 protein's effect on bone stem cells and age-related bone loss

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What this research studies

Researchers compare the support matrix made by bone marrow cells from young donors versus older donors to see how it affects mesenchymal stem cells (the cells that become bone). They found that older donors' matrix has less Cyr61 and that stem cells on older matrix respond poorly to a bone-growth signal called BMP-2. In the lab, removing Cyr61 from young matrix reduced stem cell responses, while adding Cyr61 back to old stromal cells restored BMP-2 responsiveness, and mouse studies link Cyr61 loss to lower bone density. The team uses cultured human bone marrow cells, gene delivery tools, and mouse models to understand whether fixing Cyr61-related changes could improve bone formation and healing.

Why it matters

Where this research is happening

• Rlr VA Medical Center
  Indianapolis, United States Active

Researchers

• Principal investigator: Marinkovic, Milos — Rlr VA Medical Center
• Study coordinator: Marinkovic, Milos

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About this research

1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
3. For full project details, budget, and progress reports, visit the official NIH RePORTER page.