Distinct Immunomodulatory Strategies Guide Mesenchymal Stromal/Stem Cell-Mediated Bone Regeneration - PubMed
4 days ago
- #bone regeneration
- #immunomodulation
- #mesenchymal stem cells
- Mesenchymal stromal/stem cells (MSC) bone regeneration potential is influenced by their interaction with the host immune system.
- Two MSC priming strategies were compared: coculture with regulatory T cells (Treg) and exposure to Resolvin E1 (RvE1).
- Treg priming creates an anti-inflammatory environment, reduces IL-6, elevates IL-13, suppresses CD8+ T cells and IFN-γ, reduces fibrous capsule formation, and enhances B cell activity.
- RvE1 priming promotes TNF-α and GM-CSF production, facilitating osteoblast maturation.
- Transcriptomic profiling showed distinct osteogenic signatures, with amphiregulin uniquely upregulated in the Treg group.
- Treg depletion model showed RvE1 retains partial immunomodulatory capacity and supports matrix organization.
- The study highlights the importance of immune modulation in directing MSC fate for optimized bone regeneration.