Conditioned Medium Harvested From Hif1α Engineered Mesenchymal Stem Cells Ameliorates Lad-Occlusion -Induced Injury in Rat Acute Myocardial Ischemia Model Publisher Pubmed



Alijanighazyani Z¹ ; Roushandeh AM^{1, 2} ; Sabzevari R¹ ; Salari A³ ; Razavi Toosi MT¹ ; Jahaniannajafabadi A⁴ ; Roudkenar MH³
Source: International Journal of Biochemistry and Cell Biology Published:2021

Abstract

Acute myocardial infarction (AMI) is the most common type of ischemic heart diseases with a high mortality rate. Although recent advances in medical cares and therapies have increased the patient's outcomes, but, still there is no real and effective therapeutic modality for AMI. Hence, development of novel therapeutic strategies is under focus of investigations. MSCs-based therapy has been proposed for AMI, though its efficacy is controversial yet. It is believed that MSCs exert their healing effects via secretion of growth factors/cytokines. However, these cells produce a very minute amount of the factors under normal cultivation. Here, in an attempt to improve the potential therapeutic effect of MSCs-derived conditioned medium (CM) on AMI, we transfected the cells with a recombinant plasmid encoding Hif1α-3A (a mutant form of Hif1α stable under normoxic condition), so Hif1α expression and secretion into CM (MSCs-Hif1α-CM) could be up-regulated under normoxic condition. The therapeutic potential of the MSCs-Hif1α-3A-CM was investigated in a rat model of AMI and compared to the CM harvested from non-manipulated MSCs. Our results showed that the MSCs-Hif1α-3A-CM mitigated MI-induced tissues injury, decreased fibrosis, reduced apoptosis, and limited infarct area size. These findings propose a potential therapeutic strategy for treatment of AMI. However, further preclinical and clinical investigations in this regard are still needed. © 2020 Elsevier Ltd