PMID- 15569828 OWN - NLM STAT- MEDLINE DCOM- 20050628 LR - 20220321 IS - 1524-4571 (Electronic) IS - 0009-7330 (Linking) VI - 96 IP - 1 DP - 2005 Jan 7 TI - Bone marrow cells differentiate in cardiac cell lineages after infarction independently of cell fusion. PG - 127-37 AB - Recent studies in mice have challenged the ability of bone marrow cells (BMCs) to differentiate into myocytes and coronary vessels. The claim has also been made that BMCs acquire a cell phenotype different from the blood lineages only by fusing with resident cells. Technical problems exist in the induction of myocardial infarction and the successful injection of BMCs in the mouse heart. Similarly, the accurate analysis of the cell populations implicated in the regeneration of the dead tissue is complex and these factors together may account for the negative findings. In this study, we have implemented a simple protocol that can easily be reproduced and have reevaluated whether injection of BMCs restores the infarcted myocardium in mice and whether cell fusion is involved in tissue reconstitution. For this purpose, c-kit-positive BMCs were obtained from male transgenic mice expressing enhanced green fluorescence protein (EGFP). EGFP and the Y-chromosome were used as markers of the progeny of the transplanted cells in the recipient heart. By this approach, we have demonstrated that BMCs, when properly administrated in the infarcted heart, efficiently differentiate into myocytes and coronary vessels with no detectable differentiation into hemopoietic lineages. However, BMCs have no apparent paracrine effect on the growth behavior of the surviving myocardium. Within the infarct, in 10 days, nearly 4.5 million biochemically and morphologically differentiated myocytes together with coronary arterioles and capillary structures were generated independently of cell fusion. In conclusion, BMCs adopt the cardiac cell lineages and have an important therapeutic impact on ischemic heart failure. FAU - Kajstura, Jan AU - Kajstura J AD - Cardiovascular Research Institute, Department of Medicine, New York Medical College, Valhalla, NY 10595, USA. jan_kajstura@nymc.edu FAU - Rota, Marcello AU - Rota M FAU - Whang, Brian AU - Whang B FAU - Cascapera, Stefano AU - Cascapera S FAU - Hosoda, Toru AU - Hosoda T FAU - Bearzi, Claudia AU - Bearzi C FAU - Nurzynska, Daria AU - Nurzynska D FAU - Kasahara, Hideko AU - Kasahara H FAU - Zias, Elias AU - Zias E FAU - Bonafe, Massimiliano AU - Bonafe M FAU - Nadal-Ginard, Bernardo AU - Nadal-Ginard B FAU - Torella, Daniele AU - Torella D FAU - Nascimbene, Angelo AU - Nascimbene A FAU - Quaini, Federico AU - Quaini F FAU - Urbanek, Konrad AU - Urbanek K FAU - Leri, Annarosa AU - Leri A FAU - Anversa, Piero AU - Anversa P LA - eng GR - AG-023071/AG/NIA NIH HHS/United States GR - AG-15756/AG/NIA NIH HHS/United States GR - AG-17042/AG/NIA NIH HHS/United States GR - HL-075480/HL/NHLBI NIH HHS/United States GR - HL-38132/HL/NHLBI NIH HHS/United States GR - HL-65573/HL/NHLBI NIH HHS/United States GR - HL-65577/HL/NHLBI NIH HHS/United States GR - HL-66923/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, P.H.S. DEP - 20041129 PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (enhanced green fluorescent protein) RN - 147336-22-9 (Green Fluorescent Proteins) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-kit) SB - IM CIN - Circ Res. 2005 Jan 7;96(1):6-8. PMID: 15637302 MH - Animals MH - Arterioles/cytology MH - Artifacts MH - Bone Marrow Cells/*cytology MH - Capillaries/cytology MH - Cell Differentiation MH - Cell Fusion MH - *Cell Lineage MH - Endothelial Cells/cytology MH - Female MH - Genes, Reporter MH - Graft Survival MH - Green Fluorescent Proteins/analysis MH - Heart/physiology MH - Hematopoietic Stem Cell Transplantation MH - Humans MH - Injections, Intralesional MH - Male MH - Mice MH - Mice, Transgenic MH - Myocardial Contraction MH - Myocardial Infarction/*surgery MH - Myocytes, Cardiac/cytology MH - Myocytes, Smooth Muscle/cytology MH - Organ Specificity MH - Paracrine Communication MH - Proto-Oncogene Proteins c-kit/analysis MH - Regeneration MH - *Stem Cell Transplantation MH - Ventricular Function, Left MH - Y Chromosome EDAT- 2004/12/01 09:00 MHDA- 2005/06/29 09:00 CRDT- 2004/12/01 09:00 PHST- 2004/12/01 09:00 [pubmed] PHST- 2005/06/29 09:00 [medline] PHST- 2004/12/01 09:00 [entrez] AID - 01.RES.0000151843.79801.60 [pii] AID - 10.1161/01.RES.0000151843.79801.60 [doi] PST - ppublish SO - Circ Res. 2005 Jan 7;96(1):127-37. doi: 10.1161/01.RES.0000151843.79801.60. Epub 2004 Nov 29.