MuRF1 Partners With TRIM72 to Impair Insulin Signaling in Skeletal Muscle Cells.

ABSTRACT: Muscle RING-finger protein 1 (MuRF1, gene name: TRIM63) is well known as a critical molecular regulator in skeletal muscle atrophy. Despite the identification of several substrates and interaction partners for MuRF1, the precise molecular mechanisms by which MuRF1 causes skeletal muscle atrophy remain unclear. To gain further insight into the underlying mechanism of skeletal muscle atrophy, we applied targeted biochemical approaches and identified tripartite motif-containing protein 72 (TRIM72) as a novel MuRF1-interacting protein. Subsequent analysis using MuRF1 knockout and rescue experiments showed that TRIM72 protein abundance is dependent on the presence of MuRF1 protein. Furthermore, TRIM72 protein level was increased by dexamethasone treatment in C2C12 myotubes, alongside increased

SUBMITTER: Musa I 

PROVIDER: S-EPMC12464895 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature