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Related Experiment Videos

STAT3 Phosphorylation Mediating DMSO's Function on Fetal Cardiomyocyte Proliferation with Developmental Changes.

Haitao Hu1,2, Jin Xue1,2,3, Renshun Dong1,2

  • 1Department of Physiology, Hubei Key Laboratory of Drug Target Research and Pharmacodynamic Evaluation, School of Basic Medicine, Huazhong University of Science and Technology.

International Heart Journal
|February 13, 2019
PubMed
Summary

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Dimethyl sulfoxide (DMSO) promotes fetal cardiomyocyte proliferation, particularly in later developmental stages. This effect is mediated by STAT3 phosphorylation, suggesting DMSO as a potential therapy for heart diseases involving cell loss.

Area of Science:

  • Cardiology
  • Developmental Biology
  • Regenerative Medicine

Background:

  • Endogenous cardiac regeneration is a key therapeutic target for heart diseases characterized by cell loss.
  • Dimethyl sulfoxide (DMSO) has been investigated for various therapeutic applications.

Purpose of the Study:

  • To investigate the effect of DMSO on fetal cardiomyocyte proliferation.
  • To elucidate the role of STAT3 phosphorylation in DMSO-mediated cardiomyocyte proliferation.

Main Methods:

  • Immunohistochemical staining to trace BrdU+/α actinin+ and Ki67+/α actinin+ cells.
  • Western blot analysis to assess STAT3 phosphorylation.
  • Inhibition of STAT3 phosphorylation using STA21.

Main Results:

Keywords:
Cardiomyocyte regenerationCell therapyDimethyl sulfoxideIschemic heart diseasesJAK/STAT3 pathway

Related Experiment Videos

  • DMSO significantly promoted fetal cardiomyocyte proliferation, with greater efficacy at later developmental stages (LDS) compared to early developmental stages (EDS).
  • DMSO treatment led to increased STAT3 phosphorylation at LDS, but not EDS.
  • STAT3 phosphorylation blockade reversed DMSO's proliferative effects at LDS, but not EDS.
  • Early developmental stage hearts showed lower total STAT3 but higher relative phosphorylated STAT3 levels.

Conclusions:

  • DMSO promotes fetal cardiomyocyte proliferation, with STAT3 phosphorylation playing a crucial role in this process.
  • The efficacy of DMSO in promoting cardiomyocyte proliferation is enhanced with maturation and depends on STAT3 phosphorylation.
  • DMSO represents a potentially effective, economical, and safe therapeutic option for heart diseases involving cell loss.