Hypoxic BMSC-derived exosomes-induced mitophagy quenches intestinal inflammation via HIF-1α/BNIP3 pathway.

ABSTRACT: The use of hypoxia-preconditioned exosomes (HP-Exos) to modulate intestinal immunity in ulcerative colitis (UC) represents a promising therapeutic strategy. However, the effects of hypoxic preconditioning on exosomes derived from bone marrow mesenchymal stem cells (BMSCs) and the underlying mechanisms in UC treatment remain inadequately understood. This study sought to elucidate the regulatory roles and molecular mechanisms of HP-Exos in the context of UC. HP-Exos were isolated from BMSCs and characterized. We employed hypoxia-inducible factor 1α (HIF-1α)-silenced lentivirus-interfered HP-Exos to assess their effects in both in vivo and in vitro models. A series of experiments were conducted to evaluate the effects of HP-Exos on mitophagy, oxidative stress, and apoptosis in HT-29 cells and

SUBMITTER: Zhu F 

PROVIDER: S-EPMC12820211 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature