MiR-200a-3p Aggravates DOX-Induced Cardiotoxicity by Targeting PEG3 Through SIRT1/NF-κB Signal Pathway

Doxorubicin (DOX) is a widely used cytotoxic drug whose application is limited by its severe side effects. Little was known regarding how to offset its side effects. Therefore this study aims to explore the role of miR-200a-3p in DOX-induced cardiotoxicity and its possible mechanism. DOX-induced myocardial injury rat models were established, which were then injected with miR-200a-3p inhibitor (miR-200a-3p suppression) to observe the effects of miR-200a-3p on cell proliferation, and apoptosis. Heart function and weights of rat models were also measured. Cardiomyocytes were induced by DOX, in which PEG3 knockdown or corresponding plasmids were transfected to assess the possible effect of PEG3 on cell activity. Dual luciferase reporter assay was applied to verify the binding of PEG3 with miR-200a-3p. Elevated levels of lactate dehydrogenase (LDH), creatine kinase-MB (CK-MB) and left ventricular end-diastolic pressure (LVEDP), as well as suppressed left ventricular systolic pressure (LVSP) and ± dp/dt max were showed in myocardial injury rat models. DOX induced myocardial injury and increased miR-200a-3p expression levels. miR-200a-3p inhibitor could partially attenuate DOX-induced cardiotoxicity in rat models, while PEG3 could regulate myocardial injury in DOX-treated cell models. miR-200a-3p, by targeting PEG3 through SIRT1/NF-κB signal pathway, regulated cell proliferation, inflammation and apoptosis of myocardiocytes. The results in current study demonstrated that miR-200a-3p regulates cell proliferation and apoptosis of cardiomyocytes by targeting PEG3 through SIRT1/NF-κB signal pathway. This result may provide a potential clue for the treatment of DOX-induced cardiotoxicity.

Medienart:

E-Artikel

Erscheinungsjahr:

2021

Erschienen:

2021

Enthalten in:

Zur Gesamtaufnahme - volume:21

Enthalten in:

Cardiovascular toxicology - 21(2021), 4 vom: 05. Apr., Seite 302-313

Sprache:

Englisch

Beteiligte Personen:

Fu, Qinghua [VerfasserIn]
Pan, Hongwei [VerfasserIn]
Tang, Yi [VerfasserIn]
Rong, Jingjing [VerfasserIn]
Zheng, Zhaofen [VerfasserIn]

Links:

Volltext

Themen:

80168379AG
Apoptosis
Doxorubicin
Doxorubicin-induced myocardial injury
EC 3.5.1.-
Inflammation Mediators
Journal Article
Kruppel-Like Transcription Factors
MIRN200 microRNA, rat
MiR-200a-3p
MicroRNAs
NF-κB
NF-kappa B
PEG3
Peg3 protein, rat
Proliferation
Research Support, Non-U.S. Gov't
SIRT1
Sirt1 protein, rat
Sirtuin 1

Anmerkungen:

Date Completed 10.12.2021

Date Revised 26.02.2024

published: Print-Electronic

Citation Status MEDLINE

doi:

10.1007/s12012-020-09620-3

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM321966856