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Related Experiment Video

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[Methylophiopogonanone a Inhibits LPS/ATP-Induced Macrophage Pyroptosis via ROS/NLRP3 Pathway].

H B Zeng1, L H Zhang1, D P Yuan1

  • 1Jiangsu Key Laboratory for Pharmacology and Safety Evaluation of Chinese Materia Medica, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, China.

Molekuliarnaia Biologiia
|March 28, 2023
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Summary

Methylophiopogonanone A (MO-A) inhibits macrophage pyroptosis by reducing oxidative stress and NLRP3 inflammasome activation. This compound, derived from Ophiopogonis Radix, shows potential for treating inflammatory diseases.

Keywords:
NLRP3 inflammasomeROSmacrophagesmethylophiopogonanone Apyroptosis

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Area of Science:

  • Biochemistry
  • Immunology
  • Pharmacology

Context:

  • Reactive oxygen species (ROS) are signaling molecules activating the NLRP3 inflammasome, crucial for pyroptosis and inflammatory diseases.
  • Macrophage pyroptosis is implicated in conditions like atherosclerosis, arthritis, and pulmonary fibrosis.
  • Methylophiopogonanone A (MO-A), an antioxidant from Ophiopogonis Radix, has potential therapeutic applications.

Purpose:

  • To investigate whether Methylophiopogonanone A (MO-A) can alleviate macrophage pyroptosis by inhibiting oxidative stress.
  • To elucidate the underlying mechanism of MO-A's effect on the ROS/NLRP3 inflammasome pathway.

Summary:

  • MO-A enhanced superoxide dismutase (SOD) and catalase (CAT) activity, suppressed ROS production, and reduced NLRP3 inflammasome activation and LDH release in LPS/ATP-induced macrophages.
  • These inhibitory effects on pyroptosis were reversed by hydrogen peroxide (H2O2), confirming the role of ROS.
  • MO-A effectively inhibits macrophage pyroptosis via the ROS/NLRP3 pathway.

Impact:

  • MO-A demonstrates a novel therapeutic strategy for inflammatory diseases by targeting macrophage pyroptosis through oxidative stress modulation.
  • This study identifies MO-A as a potential candidate drug for treating inflammatory conditions linked to NLRP3 inflammasome activation.