Hydrogen sulphide ameliorating skeletal muscle atrophy in db/db mice via Muscle RING finger 1 S-sulfhydration.

In this study, db/db mice and C2C12 myoblasts treated by high glucose and palmitate and oleate were chose as animal and cellular models. We explored how exogenous H2 S attenuated the degradation of skeletal muscle via the modification of MuRF1 S-sulfhydration in db/db mice. Our results show cystathionine-r-lyase expression, and H2 S level in skeletal muscle of db/db mice was reduced. Simultaneously, exogenous H2 S could alleviate ROS production and reverse expression of ER stress protein markers. Exogenous H2 S could decrease the ubiquitination level of MYOM1 and MYH4 in db/db mice. In addition, exogenous H2 S reduced the interaction between MuRF1 with MYOM1 and MYH4 via MuRF1 S-sulfhydration. Based on these results, we establish that H2 S prevented the degradation of skeletal muscle via MuRF1 S-sulfhydration at the site of Cys44 in db/db mice.
PMID: 32633463 [PubMed - as supplied by publisher]

Source: J Cell Mol Med - July 6, 2020 Category: Molecular Biology Authors: Lu F, Lu B, Zhang L, Wen J, Wang M, Zhang S, Li Q, Shu F, Sun Y, Liu N, Peng S, Zhao Y, Dong S, Zhao D, Lu F, Zhang W Tags: J Cell Mol Med Source Type: research