Article ; Online: High-mobility group box-1 impedes skeletal muscle regeneration via downregulation of Pax-7 synthesis by increasing miR-342-5p expression.
Aging
2023 Volume 15, Issue 21, Page(s) 12618–12632
Abstract: High mobility group box-1 (HMGB1) is a driver of inflammation in various muscular diseases. In a previous study, we determined that HMGB1 induced the atrophy of skeletal muscle by impairing myogenesis. Skeletal muscle regeneration after injury is ... ...
Abstract | High mobility group box-1 (HMGB1) is a driver of inflammation in various muscular diseases. In a previous study, we determined that HMGB1 induced the atrophy of skeletal muscle by impairing myogenesis. Skeletal muscle regeneration after injury is dependent on pair box 7 (Pax-7)-mediated myogenic differentiation. In the current study, we determined that the HMGB1-induced downregulation of Pax-7 expression in myoblasts inhibited the regeneration of skeletal muscle. We also determined that HMGB1 inhibits Pax-7 and muscle differentiation by increasing miR-342-5p synthesis via receptors for advanced glycation end-products (RAGE), toll-like receptor (TLR) 2, TLR4, and c-Src signaling pathways. In a mouse model involving glycerol-induced muscle injury, the therapeutic inhibition of HMGB1 was shown to rescue Pax-7 expression and muscle regeneration. The HMGB1/Pax-7 axis is a promising therapeutic target to promote muscular regeneration. |
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MeSH term(s) | Mice ; Animals ; Down-Regulation ; HMGB1 Protein/genetics ; HMGB1 Protein/metabolism ; Wound Healing ; Muscle, Skeletal/metabolism ; Muscular Diseases ; MicroRNAs/genetics |
Chemical Substances | HMGB1 Protein ; MicroRNAs |
Language | English |
Publishing date | 2023-11-13 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ISSN | 1945-4589 |
ISSN (online) | 1945-4589 |
DOI | 10.18632/aging.205202 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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