Regulation of Pgc1a expression by a Gsk3b-Tfeb signaling axis in skeletal muscle (Mus musculus)
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Description
In (skeletal) muscle cells, PGC-1 signaling controls mitochondrial biogenesis and oxidative substrate metabolism. PGC-1 signaling disturbance in skeletal muscle is linked to several chronic diseases. This pathway depicts the mechanism in which inhibition of GSK-3β increases Pgc-1α abundance, through dephosphorylation of Tfeb Theeuwes et al, 2019. This reaction allows Tfeb to translocate to the nucleus, where it stimulates the transcription of the PPARGC1A gene to the Pgc-1α protein. Phosphorylation of Tfeb leads to binding with members of the 14-3-3 protein family, which disables transport into the nucleus. If the dephosphorylation of Tfeb through Gsk-3β is a direct or indirect reaction is as of yet unknown.
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- Xu Y, Ren J, He X, Chen H, Wei T, Feng W; ''YWHA/14-3-3 proteins recognize phosphorylated TFEB by a noncanonical mode for controlling TFEB cytoplasmic localization.''; Autophagy, 2019 PubMed Europe PMC Scholia
- Marchand B, Arsenault D, Raymond-Fleury A, Boisvert FM, Boucher MJ; ''Glycogen synthase kinase-3 (GSK3) inhibition induces prosurvival autophagic signals in human pancreatic cancer cells.''; J Biol Chem, 2015 PubMed Europe PMC Scholia
- Ring DB, Johnson KW, Henriksen EJ, Nuss JM, Goff D, Kinnick TR, Ma ST, Reeder JW, Samuels I, Slabiak T, Wagman AS, Hammond ME, Harrison SD; ''Selective glycogen synthase kinase 3 inhibitors potentiate insulin activation of glucose transport and utilization in vitro and in vivo.''; Diabetes, 2003 PubMed Europe PMC Scholia
- Li Y, Xu M, Ding X, Yan C, Song Z, Chen L, Huang X, Wang X, Jian Y, Tang G, Tang C, Di Y, Mu S, Liu X, Liu K, Li T, Wang Y, Miao L, Guo W, Hao X, Yang C; ''Protein kinase C controls lysosome biogenesis independently of mTORC1.''; Nat Cell Biol, 2016 PubMed Europe PMC Scholia
- Theeuwes WF, Gosker HR, Schols AMWJ, Langen RCJ, Remels AHV; ''Regulation of PGC-1α expression by a GSK-3β-TFEB signaling axis in skeletal muscle.''; Biochim Biophys Acta Mol Cell Res, 2019 PubMed Europe PMC Scholia
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DataNodes
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| Name | Type | Database reference | Comment |
|---|---|---|---|
| 14-3-3 protein family | Protein | IPR000308 (InterPro)  | |
| CHIR99021 | Metabolite | 9956119 (PubChem-compound) | |
| Gsk-3β | Protein | Q9WV60 (Uniprot-TrEMBL) | AKA glycogen synthase kinase (GSK)-3β (Human Uniprot: P49841) |
| Mitochondrial biogenesis | Pathway | ||
| PPARGC1A
promotor | GeneProduct | 19017 (Entrez Gene) | (Human Entrez Gene: 10891) |
| Pgc-1α | Protein | O70343 (Uniprot-TrEMBL) | (Human Uniprot: Q9UBK2) |
| Tfeb | Protein | Q9R210 (Uniprot-TrEMBL) | transcription factor EB (TFEB) |
Annotated Interactions
No annotated interactions
