PMID- 22619278 OWN - NLM STAT- MEDLINE DCOM- 20120828 LR - 20220309 IS - 1524-4571 (Electronic) IS - 0009-7330 (Print) IS - 0009-7330 (Linking) VI - 111 IP - 1 DP - 2012 Jun 22 TI - Preservation of myocardial structure is enhanced by pim-1 engineering of bone marrow cells. PG - 77-86 LID - 10.1161/CIRCRESAHA.112.265207 [doi] AB - RATIONALE: Bone marrow-derived cells to treat myocardial injury improve cardiac function and support beneficial cardiac remodeling. However, survival of stem cells is limited due to low proliferation of transferred cells. OBJECTIVE: To demonstrate long-term potential of c-kit(+) bone marrow stem cells (BMCs) enhanced with Pim-1 kinase to promote positive cardiac remodeling. METHODS AND RESULTS: Lentiviral modification of c-kit(+) BMCs to express Pim-1 (BMCeP) increases proliferation and expression of prosurvival proteins relative to BMCs expressing green fluorescent protein (BMCe). Intramyocardial delivery of BMCeP at time of infarction supports improvements in anterior wall dimensions and prevents left ventricle dilation compared with hearts treated with vehicle alone. Reduction of the akinetic left ventricular wall was observed in BMCeP-treated hearts at 4 and 12 weeks after infarction. Early recovery of cardiac function in BMCeP-injected hearts facilitated modest improvements in hemodynamic function up to 12 weeks after infarction between cell-treated groups. Persistence of BMCeP is improved relative to BMCe within the infarct together with increased recruitment of endogenous c-kit(+) cells. Delivery of BMC populations promotes cellular hypertrophy in the border and infarcted regions coupled with an upregulation of hypertrophic genes. Thus, BMCeP treatment yields improved structural remodeling of infarcted myocardium compared with control BMCs. CONCLUSIONS: Genetic modification of BMCs with Pim-1 may serve as a therapeutic approach to promote recovery of myocardial structure. Future approaches may take advantage of salutary BMC actions in conjunction with other stem cell types to increase efficacy of cellular therapy and improve myocardial performance in the injured myocardium. FAU - Quijada, Pearl AU - Quijada P AD - San Diego State University Heart Institute, CA, USA. FAU - Toko, Haruhiro AU - Toko H FAU - Fischer, Kimberlee M AU - Fischer KM FAU - Bailey, Brandi AU - Bailey B FAU - Reilly, Patrick AU - Reilly P FAU - Hunt, Kristin D AU - Hunt KD FAU - Gude, Natalie A AU - Gude NA FAU - Avitabile, Daniele AU - Avitabile D FAU - Sussman, Mark A AU - Sussman MA LA - eng GR - RC1 HL100891/HL/NHLBI NIH HHS/United States GR - R01 HL105759/HL/NHLBI NIH HHS/United States GR - R21HL102613/HL/NHLBI NIH HHS/United States GR - R01HL105759/HL/NHLBI NIH HHS/United States GR - R21 HL102714/HL/NHLBI NIH HHS/United States GR - R21HL102714/HL/NHLBI NIH HHS/United States GR - P01HL085577/HL/NHLBI NIH HHS/United States GR - R01HL067245/HL/NHLBI NIH HHS/United States GR - R37 HL091102/HL/NHLBI NIH HHS/United States GR - R37HL091102/HL/NHLBI NIH HHS/United States GR - RC1HL100891/HL/NHLBI NIH HHS/United States GR - R01 HL067245/HL/NHLBI NIH HHS/United States GR - P01 HL085577/HL/NHLBI NIH HHS/United States GR - R21 HL104544/HL/NHLBI NIH HHS/United States GR - R01 HL113656/HL/NHLBI NIH HHS/United States GR - R21 HL102613/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20120522 PL - United States TA - Circ Res JT - Circulation research JID - 0047103 RN - 0 (Cytokines) RN - 147336-22-9 (Green Fluorescent Proteins) RN - EC 2.7.10.1 (Proto-Oncogene Proteins c-kit) RN - EC 2.7.11.1 (PIM1 protein, human) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-pim-1) SB - IM MH - Animals MH - Apoptosis MH - Bone Marrow Cells/*metabolism/pathology MH - *Bone Marrow Transplantation MH - Cell Proliferation MH - Cell Survival MH - Cells, Cultured MH - Cytokines/metabolism MH - Disease Models, Animal MH - Female MH - Green Fluorescent Proteins/genetics/metabolism MH - Heart Failure/metabolism/physiopathology/prevention & control MH - Humans MH - Hypertrophy, Left Ventricular/metabolism/physiopathology/prevention & control MH - Lentivirus/genetics MH - Male MH - Mice MH - Myocardial Contraction MH - Myocardial Infarction/diagnostic imaging/metabolism/physiopathology/*surgery MH - Myocardium/*metabolism/pathology MH - Phenotype MH - Proto-Oncogene Proteins c-kit/metabolism MH - Proto-Oncogene Proteins c-pim-1/genetics/*metabolism MH - Recovery of Function MH - *Regeneration MH - Signal Transduction MH - Time Factors MH - *Tissue Engineering/methods MH - Transduction, Genetic MH - Ultrasonography MH - Ventricular Function, Left MH - Ventricular Remodeling PMC - PMC3398618 MID - NIHMS386351 EDAT- 2012/05/24 06:00 MHDA- 2012/08/29 06:00 PMCR- 2013/06/22 CRDT- 2012/05/24 06:00 PHST- 2012/05/24 06:00 [entrez] PHST- 2012/05/24 06:00 [pubmed] PHST- 2012/08/29 06:00 [medline] PHST- 2013/06/22 00:00 [pmc-release] AID - CIRCRESAHA.112.265207 [pii] AID - 10.1161/CIRCRESAHA.112.265207 [doi] PST - ppublish SO - Circ Res. 2012 Jun 22;111(1):77-86. doi: 10.1161/CIRCRESAHA.112.265207. Epub 2012 May 22.