Naringenin Ameliorates Acute Inflammation by Regulating Intracellular Cytokine Degradation

Lingtao Jin1,2, Wenfeng Zeng1, Fayun Zhang1

  • 1Protein and Peptide Pharmaceutical Laboratory, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China; and.

Insights

Naringenin, a natural flavanone, protects against lethal inflammation by enhancing the degradation of inflammatory cytokines. This discovery offers a new therapeutic strategy for managing inflammatory diseases.

Area of Science:

  • Immunology
  • Pharmacology
  • Cell Biology

Background:

  • Acute inflammatory diseases arise from uncontrolled immune responses.
  • Therapeutic control of inflammation is vital for treating numerous human conditions.
  • Liver injury models, such as LPS- and Con A-induced, are used to study inflammation.

Purpose of the Study:

  • To investigate the protective effects of naringenin against inflammation-induced liver injury.
  • To elucidate the mechanism by which naringenin modulates inflammatory cytokine production.

Main Methods:

  • Murine models of LPS- and Con A-induced liver injury.
  • Analysis of inflammatory cytokine levels (e.g., TNF-α, IL-6).
  • Investigation of intracellular cytokine degradation pathways involving lysosomes and TFEB.

Main Results:

  • Naringenin demonstrated protection against lethality and organ injury in murine models.
  • Naringenin reduced inflammatory cytokine levels without affecting TLR signaling, mRNA stability, or protein translation.
  • Naringenin was found to enhance intracellular cytokine degradation via lysosome- and TFEB-dependent pathways.

Conclusions:

  • Naringenin effectively dampens cytokine production by regulating lysosome function.
  • Naringenin represents a potential therapeutic agent for inflammation-related diseases.
  • The study highlights a posttranslational control mechanism for cytokine regulation by naringenin.

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