PMID- 17150187 OWN - NLM STAT- MEDLINE DCOM- 20070212 LR - 20061215 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 352 IP - 3 DP - 2007 Jan 19 TI - Skeletal myosphere-derived progenitor cell transplantation promotes neovascularization in delta-sarcoglycan knockdown cardiomyopathy. PG - 668-74 AB - Bone marrow cells have been shown to contribute to neovascularization in ischemic hearts, whereas their impaired maturation to restore the delta-sarcoglycan (delta-SG) expression responsible for focal myocardial degeneration limits their utility to treat the pathogenesis of cardiomyopathy. Here, we report the isolation of multipotent progenitor cells from adult skeletal muscle, based on their ability to generate floating-myospheres. Myosphere-derived progenitor cells (MDPCs) are distinguishable from myogenic C2C12 cells and differentiate into vascular smooth muscle cells and mesenchymal progeny. The mutation in the delta-SG has been shown to develop vascular spasm to affect sarcolemma structure causing cardiomyopathy. We originally generated delta-SD knockdown (KD) mice and transplanted MDPCs into the hearts. MDPCs enhanced neoangiogenesis and restored delta-SG expression in impaired vasculatures through trans-differentiation, leading to improvement of cardiac function associated with paracrine effectors secretion. We propose that MDPCs may be the promising progenitor cells in skeletal muscle to treat delta-sarcoglycan complex mutant cardiomyopathy. FAU - Nomura, Tetsuya AU - Nomura T AD - Department of Experimental Therapeutics, Translational Research Center, Kyoto University Hospital, Kyoto 606-8507, Japan. FAU - Ashihara, Eishi AU - Ashihara E FAU - Tateishi, Kento AU - Tateishi K FAU - Asada, Satoshi AU - Asada S FAU - Ueyama, Tomomi AU - Ueyama T FAU - Takahashi, Tomosaburo AU - Takahashi T FAU - Matsubara, Hiroaki AU - Matsubara H FAU - Oh, Hidemasa AU - Oh H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20061127 PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Sarcoglycans) SB - IM MH - Animals MH - Cardiomyopathies/*pathology/*surgery MH - Cell Differentiation MH - Cells, Cultured MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Myoblasts/*cytology/*transplantation MH - Neovascularization, Physiologic/*physiology MH - Sarcoglycans/genetics/metabolism MH - Stem Cell Transplantation/*methods MH - Stem Cells/*cytology MH - Treatment Outcome EDAT- 2006/12/08 09:00 MHDA- 2007/02/13 09:00 CRDT- 2006/12/08 09:00 PHST- 2006/11/10 00:00 [received] PHST- 2006/11/14 00:00 [accepted] PHST- 2006/12/08 09:00 [pubmed] PHST- 2007/02/13 09:00 [medline] PHST- 2006/12/08 09:00 [entrez] AID - S0006-291X(06)02548-4 [pii] AID - 10.1016/j.bbrc.2006.11.097 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2007 Jan 19;352(3):668-74. doi: 10.1016/j.bbrc.2006.11.097. Epub 2006 Nov 27.