Study wrapper · #1275
Mitochondria-derived peptide hydrogel augments mitochondrial transplantation for promoting cardiac repair via macrophage metabolic reprogramming.
Editor's note
A materials-science paper where MOTS-c is doing real mechanistic work — the AMPK-dependent uptake step and the glycolysis-to-OXPHOS shift in macrophages are both characterised, not assumed. Limits are stage-appropriate: a rat myocardial-infarction model, functional readouts over a short window, and no way to attribute the benefit to MOTS-c alone versus the mitochondria it delivers. Nothing here speaks to systemic or injected MOTS-c as used outside a lab. Read it as early evidence for a delivery platform.
Plain-language abstract
Donor mitochondria are extremely fragile once isolated, which has held back mitochondrial transplantation after heart attacks. Researchers linked MOTS-c to a self-assembling peptide to build a hydrogel that kept isolated mitochondria functional for at least eight hours and helped immune cells take them up. In rats with induced heart attacks, the combined material shifted macrophages away from an inflammatory state and improved cardiac function.