The nuclear pore complex (NPC) has emerged as a hub for the transcriptional regulation of a subset of genes, and this type of regulation plays an important role during differentiation. Nucleoporin TPR forms the nuclear basket of the NPC and is crucial for the enrichment of open chromatin around NPCs. TPR has been implicated in the regulation of transcription; however, the role of TPR in gene expression and cell differentiation has not been described. Here we show that depletion of TPR results in an aberrant morphology of murine proliferating C2C12 myoblasts (MBs) and differentiated C2C12 myotubes (MTs). The ChIP-Seq data revealed that TPR binds to genes linked to muscle formation and function, such as myosin heavy chain (Myh4), myocyte enhancer factor 2C (Mef2C) and a majority of olfactory receptor (Olfr) genes. We further show that TPR, possibly via lysine-specific demethylase 1 (LSD1), promotes the expression of Myh4 and Olfr376, but not Mef2C. This provides a novel insight into the mechanism of myogenesis; however, more evidence is needed to fully elucidate the mechanism by which TPR affects specific myogenic genes.

• Keywords
• LSD1, Myh4, Olfr, TPR, gene expression, myogenic differentiation, nucleoporin, translocated promoter region,
• MeSH
• Cell Differentiation MeSH
• Cell Line MeSH
• Gene Expression MeSH
• Nuclear Pore Complex Proteins metabolism   MeSH
• Muscle Fibers, Skeletal * cytology   metabolism   MeSH
• Myoblasts, Skeletal * cytology   metabolism   MeSH
• Mice MeSH
• Proto-Oncogene Proteins metabolism   MeSH
• Gene Expression Regulation MeSH
• Myosin Heavy Chains metabolism   MeSH
• Muscle Development MeSH
• Animals MeSH
• Check Tag
• Mice MeSH
• Animals MeSH
• Publication type
• Journal Article MeSH
• Research Support, Non-U.S. Gov't MeSH
• Names of Substances
• Nuclear Pore Complex Proteins MeSH
• MYH4 protein, mouse MeSH Browser
• Proto-Oncogene Proteins MeSH
• Myosin Heavy Chains MeSH
• TPR protein, mouse MeSH Browser