OBJECTIVES: The goal of this study was to demonstrate the enhancement of human cardiac progenitor cell (hCPC) reparative and regenerative potential by genetic modification for the treatment of myocardial infarction. BACKGROUND: Regenerative potential of stem cells to repair acute infarction is limited. Improved hCPC survival, proliferation, and differentiation into functional myocardium will increase efficacy and advance translational implementation of cardiac regeneration. METHODS: hCPCs isolated from the myocardium of heart failure patients undergoing left ventricular assist device implantation were engineered to express green fluorescent protein (hCPCe) or Pim-1-GFP (hCPCeP). Functional tests of hCPC regenerative potential were performed with immunocompromised mice by using intramyocardial adoptive transfer injection after infarction. Myocardial structure and function were monitored by echocardiographic and hemodynamic assessment for 20 weeks after delivery. hCPCe and hCPCeP expressing luciferase were observed by using bioluminescence imaging to noninvasively track persistence. RESULTS: hCPCeP exhibited augmentation of reparative potential relative to hCPCe control cells, as shown by significantly increased proliferation coupled with amelioration of infarction injury and increased hemodynamic performance at 20 weeks post-transplantation. Concurrent with enhanced cardiac structure and function, hCPCeP demonstrated increased cellular engraftment and differentiation with improved vasculature and reduced infarct size. Enhanced persistence of hCPCeP versus hCPCe was revealed by bioluminescence imaging at up to 8 weeks post-delivery. CONCLUSIONS: Genetic engineering of hCPCs with Pim-1 enhanced repair of damaged myocardium. Ex vivo gene delivery to modify stem cells has emerged as a viable option addressing current limitations in the field. This study demonstrates that efficacy of hCPCs from the failing myocardium can be safely and significantly enhanced through expression of Pim-1 kinase, setting the stage for use of engineered cells in pre-clinical settings.
OBJECTIVES: The goal of this study was to demonstrate the enhancement of human cardiac progenitor cell (hCPC) reparative and regenerative potential by genetic modification for the treatment of myocardial infarction. BACKGROUND: Regenerative potential of stem cells to repair acute infarction is limited. Improved hCPC survival, proliferation, and differentiation into functional myocardium will increase efficacy and advance translational implementation of cardiac regeneration. METHODS: hCPCs isolated from the myocardium of heart failurepatients undergoing left ventricular assist device implantation were engineered to express green fluorescent protein (hCPCe) or Pim-1-GFP (hCPCeP). Functional tests of hCPC regenerative potential were performed with immunocompromised mice by using intramyocardial adoptive transfer injection after infarction. Myocardial structure and function were monitored by echocardiographic and hemodynamic assessment for 20 weeks after delivery. hCPCe and hCPCeP expressing luciferase were observed by using bioluminescence imaging to noninvasively track persistence. RESULTS:hCPCeP exhibited augmentation of reparative potential relative to hCPCe control cells, as shown by significantly increased proliferation coupled with amelioration of infarction injury and increased hemodynamic performance at 20 weeks post-transplantation. Concurrent with enhanced cardiac structure and function, hCPCeP demonstrated increased cellular engraftment and differentiation with improved vasculature and reduced infarct size. Enhanced persistence of hCPCeP versus hCPCe was revealed by bioluminescence imaging at up to 8 weeks post-delivery. CONCLUSIONS: Genetic engineering of hCPCs with Pim-1 enhanced repair of damaged myocardium. Ex vivo gene delivery to modify stem cells has emerged as a viable option addressing current limitations in the field. This study demonstrates that efficacy of hCPCs from the failing myocardium can be safely and significantly enhanced through expression of Pim-1 kinase, setting the stage for use of engineered cells in pre-clinical settings.
Authors: L Guo; Y Harihara; M Hirata; Y Kita; K Sano; K Kusaka; S Hisatomi; Y Miura; M Makuuchi Journal: Transplant Proc Date: 2000-11 Impact factor: 1.066
Authors: Roberto Bolli; Atul R Chugh; Domenico D'Amario; John H Loughran; Marcus F Stoddard; Sohail Ikram; Garth M Beache; Stephen G Wagner; Annarosa Leri; Toru Hosoda; Fumihiro Sanada; Julius B Elmore; Polina Goichberg; Donato Cappetta; Naresh K Solankhi; Ibrahim Fahsah; D Gregg Rokosh; Mark S Slaughter; Jan Kajstura; Piero Anversa Journal: Lancet Date: 2011-11-14 Impact factor: 79.321
Authors: Mathias H Konstandin; Haruhiro Toko; Grady M Gastelum; Pearl Quijada; Andrea De La Torre; Mercedes Quintana; Brett Collins; Shabana Din; Daniele Avitabile; Mirko Völkers; Natalie Gude; Reinhard Fässler; Mark A Sussman Journal: Circ Res Date: 2013-05-07 Impact factor: 17.367
Authors: Megan M Monsanto; Kevin S White; Taeyong Kim; Bingyan J Wang; Kristina Fisher; Kelli Ilves; Farid G Khalafalla; Alexandria Casillas; Kathleen Broughton; Sadia Mohsin; Walter P Dembitsky; Mark A Sussman Journal: Circ Res Date: 2017-04-26 Impact factor: 17.367
Authors: Balaji Sundararaman; Daniele Avitabile; Mathias H Konstandin; Christopher T Cottage; Natalie Gude; Mark A Sussman Journal: Circ Res Date: 2012-03-22 Impact factor: 17.367
Authors: Joshua K Salabei; Pawel K Lorkiewicz; Candice R Holden; Qianhong Li; Kyung U Hong; Roberto Bolli; Aruni Bhatnagar; Bradford G Hill Journal: Stem Cells Date: 2015-05-26 Impact factor: 6.277