Transducer of regulated CREB-binding proteins (TORCs) induce PGC-1alpha transcription and mitochondrial biogenesis in muscle cells.

ABSTRACT: PGC-1alpha (peroxisome proliferator-activated receptor gamma coactivator 1alpha) is a master regulator of mitochondrial biogenesis and plays an important role in several other aspects of energy metabolism. To identify upstream regulators of PGC-1alpha gene transcription, 10,000 human full-length cDNAs were screened for induction of the PGC-1alpha promoter. A number of activators of PGC-1alpha transcription were found; the most potent activator was the transducer of regulated CREB (cAMP response element-binding protein) binding protein (TORC) 1, a coactivator of CREB. The other two members of the TORC family, TORC2 and TORC3, also strongly activated PGC-1alpha transcription. TORCs dramatically induced PGC-1alpha gene transcription through CREB. Forced expression of TORCs in primary muscle c

SUBMITTER: Wu Z 

PROVIDER: S-EPMC1569674 | biostudies-literature | 2006 Sep

REPOSITORIES: biostudies-literature