# Research on GDF15 biological functions > Live situation record from CLSTR: https://clstr.news/situations/research-on-gdf15-biological-functions > Updated: 2026-08-21T12:07:58.000Z. Sources: 2. Developments: 2. Research regarding the hormone Growth Differentiation Factor 15 (GDF15) has expanded from its role in cellular dynamics to its systemic protective functions. Initial findings established that GDF15 is essential for mitochondrial quality control in human skin fibroblasts. A deficiency in GDF15 was found to cause a fission deficit in mitochondria, disrupted hypoxia signaling, and impaired extracellular matrix coordination, which affects wound healing and tissue aging. Subsequent research from McMaster University identified a new role for GDF15 in protecting the liver from inflammation and fibrosis. This study revealed a signaling pathway where GDF15 communicates from the brain to the liver via the nervous system to trigger glucocorticoid release. These protective effects appear to function independently of weight loss or fat levels, offering potential new therapeutic avenues for treating metabolic dysfunction-associated steatohepatitis (MASH). ## Timeline ### 2026-08-21: McMaster University researchers find GDF15 hormone protects liver McMaster University researchers found that the hormone GDF15 protects the liver from inflammation and fibrosis through a brain-to-liver signaling pathway, independent of weight loss. 2 sources. https://clstr.news/cluster/mcmaster-university-researchers-find-gdf15-hormone-protects-liver ### 2026-07-31: GDF15 Regulates Mitochondrial Quality Control in Human Skin Fibroblasts Study finds GDF15 crucial for mitochondrial quality control in human skin fibroblasts; its loss causes defective mitochondria, impaired hypoxia signaling, and reduced wound‑healing support. 3 sources. https://clstr.news/cluster/gdf15-regulates-mitochondrial-quality-control-in-human-skin-fibroblasts --- Cite as: Research on GDF15 biological functions. CLSTR, https://clstr.news/situations/research-on-gdf15-biological-functions