PMID- 29420632 OWN - NLM STAT- MEDLINE DCOM- 20180425 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 13 IP - 2 DP - 2018 TI - Implication of SPARC in the modulation of the extracellular matrix and mitochondrial function in muscle cells. PG - e0192714 LID - 10.1371/journal.pone.0192714 [doi] LID - e0192714 AB - Secreted protein, acidic and rich in cysteine (SPARC) is differentially associated with cell proliferation and extracellular matrix (ECM) assembly. We show here the effect of exogenous SPARC inhibition/induction on ECM and mitochondrial proteins expression and on the differentiation of C2C12 cells. The cells were cultured in growth medium (GM) supplemented with different experimental conditions. The differentiation of myoblasts was studied for 5 days, the expressions of ECM and mitochondrial proteins were measured and the formation of the myotubes was quantified after exogenous induction/inhibition of SPARC. The results indicate that the addition of recombinant SPARC protein (rSPARC) in cell culture medium increased the differentiation of C2C12 myoblasts and myogenin expression during the myotube formation. However, the treatment with antibody specific for SPARC (anti-SPARC) prevented the differentiation and decreased myogenin expression. The induction of SPARC in the proliferating and differentiating C2C12 cells increased collagen 1a1 protein expression, whereas the inhibition decreased it. The effects on fibronectin protein expression were opposite. Furthermore, the addition of rSPARC in C2C12 myoblast increased the expression of mitochondrial proteins, ubiquinol-cytochrome c reductase core protein II (UQCRC2) and succinate dehydrogenase iron-sulfur subunit (SDHB), whereas the anti-SPARC decreased them. During the differentiation, only the anti-SPARC had the effects on mitochondrial proteins, NADH dehydrogenase ubiquinone 1 beta subcomplex subunit 8 (NADHB8), SDHB and cytochrome c oxidase 1 (MTCO1). Thus, SPARC plays a crucial role in the proliferation and differentiation of C2C12 and may be involved in the link between the ECM remodeling and mitochondrial function. FAU - Melouane, Aicha AU - Melouane A AD - CREMI, CHU de Quebec Research Center, Quebec, Quebec, Canada. AD - Department of Molecular Medicine, Faculty of Medicine, Laval University, Quebec, Quebec, Canada. FAU - Carbonell, Antoine AU - Carbonell A AD - Unit of Human Genetics, CHU de Quebec Research Center, Quebec, Quebec, Canada. AD - Department of Medicine, Faculty of Medicine, Laval University, Quebec, Quebec, Canada. FAU - Yoshioka, Mayumi AU - Yoshioka M AD - CREMI, CHU de Quebec Research Center, Quebec, Quebec, Canada. FAU - Puymirat, Jack AU - Puymirat J AD - Unit of Human Genetics, CHU de Quebec Research Center, Quebec, Quebec, Canada. AD - Department of Medicine, Faculty of Medicine, Laval University, Quebec, Quebec, Canada. FAU - St-Amand, Jonny AU - St-Amand J AUID- ORCID: 0000-0002-2595-6127 AD - CREMI, CHU de Quebec Research Center, Quebec, Quebec, Canada. AD - Department of Molecular Medicine, Faculty of Medicine, Laval University, Quebec, Quebec, Canada. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180208 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Culture Media) RN - 0 (Osteonectin) RN - 0 (Recombinant Proteins) RN - 0 (SPARC protein, mouse) SB - IM MH - Animals MH - Cell Differentiation MH - Cell Line MH - Culture Media MH - Extracellular Matrix/*metabolism MH - Mice MH - Mitochondria, Muscle/*metabolism MH - Muscle, Skeletal/cytology/*metabolism MH - Myoblasts, Skeletal/cytology/*metabolism MH - Osteonectin/*metabolism MH - Oxidative Phosphorylation MH - Recombinant Proteins/metabolism PMC - PMC5805355 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2018/02/09 06:00 MHDA- 2018/04/26 06:00 PMCR- 2018/02/08 CRDT- 2018/02/09 06:00 PHST- 2017/05/19 00:00 [received] PHST- 2018/01/29 00:00 [accepted] PHST- 2018/02/09 06:00 [entrez] PHST- 2018/02/09 06:00 [pubmed] PHST- 2018/04/26 06:00 [medline] PHST- 2018/02/08 00:00 [pmc-release] AID - PONE-D-17-19335 [pii] AID - 10.1371/journal.pone.0192714 [doi] PST - epublish SO - PLoS One. 2018 Feb 8;13(2):e0192714. doi: 10.1371/journal.pone.0192714. eCollection 2018.