title: New Developments in Cardiac Regeneration.
abstract: Numerous pharmacological and device therapies have improved adverse cardiac remodelling and mortality in heart failure. However, none are able to regenerate damaged cardiac tissue. Stem cell based therapies using multipotent (adult) stem cells and pluripotent stem cells are new approaches that could potentially achieve the elusive goal of true cardiac regeneration. Over the past two decades, various stem cell based approaches have been shown to improve left ventricular function in pre-clinical animal models. Promising results rapidly led to clinical trials, initially using bone marrow-derived mononuclear cells, then mesenchymal stromal cell populations and, more recently, progenitor cells from the adult heart itself. These have been shown to be safe and have advanced our understanding of potential suitable recipients, cell delivery routes, and possible mechanisms of action. However, efficacy in these trials has been inconsistent. Human pluripotent stem cells (hPSCs) are another potential source of stem cells for cardiac regeneration. They could theoretically provide an unlimited source of cardiomyocytes or cardiac progenitors. Pre-clinical studies in both small and large animal models have shown robust engraftment and improvements in cardiac function. The first clinical trial using hPSC-derived cardiac derivatives has now commenced and others are imminent. In this brief review article, we summarise recent developments in stem cell therapies aimed at cardiac regeneration, including discussion of types of cell and non-cell-based strategies being explored.
authors.affiliation: Centre for Heart Research, Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Cardiology, Westmead Hospital, Sydney, NSW, Australia.
authors.forename: Thi Yen Loan
authors.initials: TY
authors.lastname: Le
authors.affiliation: Centre for Heart Research, Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Cardiology, Westmead Hospital, Sydney, NSW, Australia; Sydney Medical School, University of Sydney, Sydney, NSW, Australia.
authors.forename: Sujitha
authors.initials: S
authors.lastname: Thavapalachandran
authors.affiliation: Centre for Heart Research, Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Cardiology, Westmead Hospital, Sydney, NSW, Australia; Sydney Medical School, University of Sydney, Sydney, NSW, Australia.
authors.forename: Eddy
authors.initials: E
authors.lastname: Kizana
authors.affiliation: Centre for Heart Research, Westmead Institute for Medical Research, Sydney, NSW, Australia; Department of Cardiology, Westmead Hospital, Sydney, NSW, Australia; Sydney Medical School, University of Sydney, Sydney, NSW, Australia. Electronic address: james.chong@sydney.edu.au.
authors.forename: James Jh
authors.initials: JJ
authors.lastname: Chong
mesh_terms: D000328:Adult; D053687:Adult Stem Cells / Q000637:transplantation*; D006333:Heart Failure / Q000503:physiopathology / Q000628:therapy; D006801:Humans; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells; D039904:Pluripotent Stem Cells / Q000637:transplantation*; D044968:Regenerative Medicine / Q000379:methods*; D016277:Ventricular Function, Left
keywords: Adult stem cells; Cell transplantation; Heart failure; Myocardial infarction; Non-cell strategies; Pluripotent stem cells; Regeneration