Mechanisms of Regenerative Potential Activation in Cardiac Mesenchymal Cells.

Autor:	Docshin PM; Almazov National Medical Research Centre, Institute of Molecular Biology and Genetics, 197341 St. Petersburg, Russia., Karpov AA; Almazov National Medical Research Centre, Institute of Experimental Medicine, 194156 St. Petersburg, Russia.; Center of Experimental Pharmacology, Saint Petersburg State Chemical Pharmaceutical University, 197022 St. Petersburg, Russia., Mametov MV; Department of Pathophysiology, Pavlov First Saint Petersburg State Medical University, 197022 St. Petersburg, Russia., Ivkin DY; Center of Experimental Pharmacology, Saint Petersburg State Chemical Pharmaceutical University, 197022 St. Petersburg, Russia., Kostareva AA; Almazov National Medical Research Centre, Institute of Molecular Biology and Genetics, 197341 St. Petersburg, Russia., Malashicheva AB; Almazov National Medical Research Centre, Institute of Molecular Biology and Genetics, 197341 St. Petersburg, Russia.; Laboratory of Regenerative Biomedicine, Institute of Cytology, Russian Academy of Science, 194064 St. Petersburg, Russia.
Jazyk:	angličtina
Zdroj:	Biomedicines [Biomedicines] 2022 May 31; Vol. 10 (6). Date of Electronic Publication: 2022 May 31.
DOI:	10.3390/biomedicines10061283
Abstrakt:	Recovery of the contractile function of the heart and the regeneration of the myocardium after ischemic injury are contemporary issues in regenerative medicine and cell biology. This study aimed to analyze early transcriptional events in cardiac tissue after infarction and to explore the cell population that can be isolated from myocardial tissue. We induced myocardial infarction in Wistar rats by permanent ligation of the left coronary artery and showed a change in the expression pattern of Notch-associated genes and Bmp2/Runx2 in post-MI tissues using RNA sequencing and RT-PCR. We obtained primary cardiac mesenchymal cell (CMC) cultures from postinfarction myocardium by enzymatic dissociation of tissues, which retained part of the activation stimulus and had a pronounced proliferative potential, assessed using a "xCELLigence" real-time system. Hypoxia in vitro also causes healthy CMCs to overexpress Notch-associated genes and Bmp2/Runx2 . Exogenous activation of the Notch signaling pathway by lentiviral transduction of healthy CMCs resulted in a dose-dependent activation of the Runx2 transcription factor but did not affect the activity of the Bmp2 factor. Thus, the results of this study showed that acute hypoxic stress could cause short-term activation of the embryonic signaling pathways Notch and Bmp in CMCs, and this interaction is closely related to the processes of early myocardial remodeling after a heart attack. The ability to correctly modulate and control the corresponding signals in the heart can help increase the regenerative capacity of the myocardium before the formation of fibrotic conditions.
Databáze:	MEDLINE
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