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Purification and Transplantation of Myogenic Progenitor Cell Derived Exosomes to Improve Cardiac Function in Duchenne Muscular Dystrophic Mice
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Stem Cell-Derived Exosomes Prevent Aging-Induced Cardiac Dysfunction through a Novel Exosome/lncRNA

Bao Zhu1, Lulu Zhang1, Chun Liang2

  • 1Institute for Cardiovascular Science & Department of Cardiovascular Surgery, First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215123, China.

Oxidative Medicine and Cellular Longevity
|May 16, 2019
PubMed

Insights

Human umbilical cord mesenchymal stem cell-derived exosomes prevent aging-related heart dysfunction. These exosomes release metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) long noncoding RNA (lncRNA), inhibiting the NF-κB/TNF-α pathway.

Area of Science:

  • Cardiovascular Biology
  • Aging Research
  • Stem Cell Therapy

Background:

  • Aging is a significant risk factor for cardiovascular disease, with limited therapeutic options.
  • Nuclear factor-kappa B (NF-κB) and tumor necrosis factor-alpha (TNF-α) are implicated in aging, but their inactivation pathways are unclear.
  • Exosomes show potential in cardiac repair via miRNA, but the role of long noncoding RNAs (lncRNAs) in exosome-mediated cardiac repair is unexplored.

Purpose of the Study:

  • To investigate the role of lncRNAs in exosome-mediated cardiac repair.
  • To explore the therapeutic potential of human umbilical cord mesenchymal stem cell (UMSC)-derived exosomes in preventing aging-induced cardiac dysfunction.
  • To identify the specific lncRNA involved in exosome-mediated cardiac protection and its mechanism of action.

Main Methods:

  • Utilized UMSC-derived exosomes for potential therapeutic effects on aging hearts.
  • Investigated the role of metastasis-associated lung adenocarcinoma transcript 1 (MALAT1), a lncRNA, in exosome function.
  • Employed silencer RNA targeting MALAT1 to assess its necessity for exosome-mediated benefits.
  • Analyzed the impact on the NF-κB/TNF-α signaling pathway.

Main Results:

  • UMSC-derived exosomes demonstrated efficacy in preventing aging-induced cardiac dysfunction.
  • Silencing MALAT1 in exosomes abrogated their protective effects on the aging heart.
  • UMSC-derived exosomes deliver MALAT1, which subsequently inhibits the NF-κB/TNF-α signaling pathway.

Conclusions:

  • UMSC-derived exosomes prevent aging-induced cardiac dysfunction through the delivery of MALAT1 lncRNA.
  • MALAT1 acts by inhibiting the NF-κB/TNF-α signaling pathway, offering a novel therapeutic target.
  • These findings pave the way for developing therapies to delay aging and age-related cardiovascular diseases.

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