PMID- 17273866 OWN - NLM STAT- MEDLINE DCOM- 20070806 LR - 20220408 IS - 0031-6768 (Print) IS - 0031-6768 (Linking) VI - 454 IP - 2 DP - 2007 May TI - Calcineurin A and CaMKIV transactivate PGC-1alpha promoter, but differentially regulate cytochrome c promoter in rat skeletal muscle. PG - 297-305 AB - In skeletal muscle, slow-twitch fibers are highly dependent on mitochondrial oxidative metabolism suggesting the existence of common regulatory pathways in the control of slow muscle-specific protein expression and mitochondrial biogenesis. In this study, we determined whether peroxisome proliferator-activated receptor gamma co-activator-1alpha (PGC-1alpha) could transactivate promoters of nuclear-encoded mitochondrial protein (cytochrome c) and muscle-specific proteins (fast troponin I, MyoD). We also investigated if calcineurin A (CnA) and calcium/calmodulin kinase IV (CaMKIV) were involved in the regulation of PGC-1alpha and cytochrome c promoter. For this purpose, we took advantage of the gene electrotransfer technique, which allows acute expression of a gene of interest. Electrotransfer of a PGC-1alpha expression vector into rat Tibialis anterior muscle induced a strong transactivation of cytochrome c promoter (P < 0.001) independent of nuclear respiratory factor 1. PGC-1alpha gene electrotransfer did not transactivate fast troponin I promoter, whereas it did transactivate MyoD promoter (P < 0.05). Finally, whereas electrotransfers of CnA or CaMKIV expression vectors transactivated PGC-1alpha promoter (P < 0.001), gene electrotransfer of CaMKIV was only able to transactivate cytochrome c promoter. Taken together, these data suggest that CnA triggers PGC-1alpha promoter transactivation to drive the expression of non-mitochondrial proteins. FAU - Guerfali, Ibtissem AU - Guerfali I AD - Unite Physiologie et Physiopathologie de l'Exercice et Handicap EA 3062, Faculte de Medecine, Universite Jean Monnet, 15 rue Ambroise Pare, 42023 Saint-Etienne Cedex 2, France. FAU - Manissolle, Chloe AU - Manissolle C FAU - Durieux, Anne-Cecile AU - Durieux AC FAU - Bonnefoy, Regis AU - Bonnefoy R FAU - Bartegi, Aghleb AU - Bartegi A FAU - Freyssenet, Damien AU - Freyssenet D LA - eng PT - Journal Article DEP - 20070202 PL - Germany TA - Pflugers Arch JT - Pflugers Archiv : European journal of physiology JID - 0154720 RN - 0 (MyoD Protein) RN - 0 (Nuclear Respiratory Factor 1) RN - 0 (Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha) RN - 0 (Ppargc1a protein, rat) RN - 0 (RNA-Binding Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Transcription Factors) RN - 0 (Troponin I) RN - 9007-43-6 (Cytochromes c) RN - EC 1.13.12.- (Luciferases) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinase Type 4) RN - EC 2.7.11.17 (Calcium-Calmodulin-Dependent Protein Kinases) RN - EC 2.7.11.17 (Camk4 protein, rat) RN - EC 3.1.3.16 (Calcineurin) SB - IM MH - Animals MH - Base Sequence MH - Calcineurin/genetics/*metabolism MH - Calcium-Calmodulin-Dependent Protein Kinase Type 4 MH - Calcium-Calmodulin-Dependent Protein Kinases/genetics/*metabolism MH - Cytochromes c/*genetics/metabolism MH - Gene Deletion MH - Luciferases/genetics/metabolism MH - Male MH - Muscle, Skeletal/*metabolism MH - MyoD Protein/genetics/metabolism MH - Nuclear Respiratory Factor 1/genetics/metabolism MH - Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha MH - Promoter Regions, Genetic/*genetics MH - RNA-Binding Proteins/*genetics/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Recombinant Fusion Proteins/genetics/metabolism MH - Transcription Factors/*genetics/metabolism MH - Transcriptional Activation MH - Transfection MH - Troponin I/genetics/metabolism EDAT- 2007/02/03 09:00 MHDA- 2007/08/07 09:00 CRDT- 2007/02/03 09:00 PHST- 2006/10/17 00:00 [received] PHST- 2007/01/04 00:00 [accepted] PHST- 2006/12/21 00:00 [revised] PHST- 2007/02/03 09:00 [pubmed] PHST- 2007/08/07 09:00 [medline] PHST- 2007/02/03 09:00 [entrez] AID - 10.1007/s00424-007-0206-6 [doi] PST - ppublish SO - Pflugers Arch. 2007 May;454(2):297-305. doi: 10.1007/s00424-007-0206-6. Epub 2007 Feb 2.