Cardiosphere-derived cells from pediatric end-stage heart failure patients have enhanced functional activity due to the heat shock response regulating the secretome

Stem Cells
Sudhish SharmaSunjay Kaushal

Abstract

We have demonstrated that human neonatal cardiosphere-derived cells (CDCs) derived from the young are more regenerative due to their robust secretome. However, it is unclear how the decompensated pediatric heart impacts the functional activity of their CDCs. Our aim was to characterize the potency of pediatric CDCs derived from normal functioning myocardium of control heart disease (CHD) patients to those generated from age-matched end stage heart failure (ESHF) patients and to determine the mechanisms involved. ESHF-derived CDCs contained a higher number of c-kit(+) , Islet-1(+) , and Sca-1(+) cells. When transplanted into an infarcted rodent model, ESHF-derived CDCs significantly demonstrated higher restoration of ventricular function, prevented adverse remodeling, and enhanced angiogenesis when compared with CHD patients. The superior functional recovery of the ESHF-derived CDCs was mediated in part by increased SDF-1α and VEGF-A secretion resulting in augmented recruitment of endogenous stem cells and proliferation of cardiomyocytes. We determined the mechanism is due to the secretome directed by the heat shock response (HSR), which is supported by three lines of evidence. First, gain of function studies demonstrated that i...Continue Reading

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Citations

Oct 14, 2016·Stem Cells and Development·Maurizio PesceAntonio Paolo Beltrami
Dec 6, 2017·Cardiology in Review·Carmel Ashur, William H Frishman
Sep 17, 2020·Canadian Journal of Physiology and Pharmacology·Roberto BolliQianghong Li
May 24, 2019·Science Translational Medicine·Progyaparamita SahaSunjay Kaushal
Aug 27, 2019·Frontiers in Cell and Developmental Biology·Amanda LeitolisMarco A Stimamiglio
Sep 2, 2021·The Journal of Thoracic and Cardiovascular Surgery·Progyaparamita SahaSudhish Sharma
Nov 17, 2021·Molecular and Cellular Biochemistry·Xian-Liang TangRoberto Bolli

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