Erschienen in:
01.11.2008 | ORIGINAL CONTRIBUTION
TGF-β1 enhances cardiomyogenic differentiation of skeletal muscle-derived adult primitive cells
verfasst von:
Ahmed Abdel-Latif, MD, Ewa K. Zuba-Surma, PhD, Jamie Case, PhD, Sumit Tiwari, MD, Greg Hunt, BS, Smita Ranjan, BS, Robert J. Vincent, BS, Edward F. Srour, PhD, Roberto Bolli, MD, Buddhadeb Dawn, MD
Erschienen in:
Basic Research in Cardiology
|
Ausgabe 6/2008
Einloggen, um Zugang zu erhalten
Abstract
The optimal medium for cardiac differentiation of adult primitive cells remains to be established. We quantitatively compared the efficacy of IGF-1, dynorphin B, insulin, oxytocin, bFGF, and TGF-β1 in inducing cardiomyogenic differentiation. Adult mouse skeletal muscle-derived Sca1+/CD45-/c-kit-/Thy-1+ (SM+) and Sca1-/CD45-/c-kit-/Thy-1+ (SM-) cells were cultured in basic medium (BM; DMEM, FBS, IGF-1, dynorphin B) alone and BM supplemented with insulin, oxytocin, bFGF, or TGF-β1. Cardiac differentiation was evaluated by the expression of cardiac-specific markers at the mRNA (qRT-PCR) and protein (immunocytochemistry) levels. BM+TGF-β1 upregulated mRNA expression of Nkx2.5 and GATA-4 after 4 days and Myl2 after 9 days. After 30 days, BM+TGF-β1 induced the greatest extent of cardiac differentiation (by morphology and expression of cardiac markers) in SM- cells. We conclude that TGF-β1 enhances cardiomyogenic differentiation in skeletal muscle-derived adult primitive cells. This strategy may be utilized to induce cardiac differentiation as well as to examine the cardiomyogenic potential of adult tissue-derived stem/progenitor cells.