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Updated: Jan 22, 2026

Native Polyacrylamide Gel Electrophoresis Immunoblot Analysis of Endogenous IRF5 Dimerization
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Native Polyacrylamide Gel Electrophoresis Immunoblot Analysis of Endogenous IRF5 Dimerization

Published on: October 6, 2019

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The protective effect of interfering TLR9-IRF5 signaling pathway on the development of CVB3-induced myocarditis

Shu Nie1, Boqi Dong2, Shuang Gao3

  • 1Department of Molecular Biology in College of Basic Medical Sciences and Institute of Pediatrics in First Hospital, Jilin University, Changchun 130021, PR China; Department of Pediatric cardiology, The First Hospital of Jilin University, Changchun 130021, PR China.

Clinical Immunology (Orlando, Fla.)
|July 8, 2019
PubMed

Insights

Interfering with the toll-like receptor 9 (TLR9)-interferon regulatory factor 5 (IRF5) pathway may treat coxsackievirus B3 (CVB3)-induced myocarditis. This pathway

Area of Science:

  • Immunology
  • Cardiology
  • Virology

Background:

  • Toll-like receptor 9 (TLR9) and interferon regulatory factor 5 (IRF5) are implicated in myocarditis development.
  • Coxsackievirus B3 (CVB3) is a common cause of viral myocarditis.

Purpose of the Study:

  • To investigate the role of the TLR9-IRF5 pathway in CVB3-induced myocarditis.
  • To explore the therapeutic potential of targeting this pathway.

Main Methods:

  • Detection of TLR9-IRF5 pathway molecules in CVB3-infected patients and mice.
  • Assessment of an AAAG ODN with IRF5 interfering activity in a mouse model.

Main Results:

  • TLR9, IRF5, TNF-α, and IL-6 levels were elevated in CVB3 infection, correlating with heart injury severity.
  • AAAG ODN treatment reduced pathway molecule levels and alleviated myocarditis in mice.

Conclusions:

  • The TLR9-IRF5 pathway contributes to CVB3-induced myocarditis.
  • Interfering with the TLR9-IRF5 pathway shows promise for treating CVB3 myocarditis.
Keywords:
Coxsackievirus B3Interferon regulatory factor 5MyocarditisOligodeoxynucleotideToll-like receptor 9

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