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Updated: Jun 19, 2026

Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages
06:52

Detection of Inflammasome Activation and Pyroptotic Cell Death in Murine Bone Marrow-derived Macrophages

Published on: May 21, 2018

[The apoptosis of mouse macrophage J774A.1 induced by oxysterol depend on NF-kappaB activation]

Zhen-Yu Huang1, Qing-Ping Liu, Wen-Zhe Li

  • 1Key Laboratory of Bio-organic Chemistry, College of Bioengineering, Dalian University, Dalian 116622, China. zhenyu_bio@hotmail.com

Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi = Chinese Journal of Cellular and Molecular Immunology
|October 9, 2009
PubMed
Abstract

Insights

7-ketocholesterol (7-KC) triggers nuclear factor-kappa B (NF-kappaB) activation, leading to programmed cell death (apoptosis) in mouse macrophages. Inhibiting NF-kappaB reduces this 7-KC-induced apoptosis.

Area of Science:

  • Cell Biology
  • Immunology
  • Biochemistry

Context:

  • Oxysterols, such as 7-ketocholesterol (7-KC), are implicated in cellular dysfunction.
  • Macrophage activation and apoptosis are critical processes in inflammatory and immune responses.

Purpose:

  • To investigate the relationship between nuclear factor-kappa B (NF-kappaB) activation and 7-ketocholesterol (7-KC)-induced apoptosis in mouse macrophages.

Summary:

  • 7-ketocholesterol (7-KC) was found to inhibit macrophage proliferation and induce apoptosis.
  • This apoptosis is closely associated with the activation of NF-kappaB.
  • Inhibition of NF-kappaB activation using pyrrolidine dithiocarbamate (PDTC) attenuated the 7-KC-induced apoptosis, confirming NF-kappaB's role.

Impact:

  • This study elucidates a key molecular mechanism by which 7-KC exerts its cytotoxic effects on macrophages.
  • Understanding the role of NF-kappaB in 7-KC-induced apoptosis may offer therapeutic targets for conditions involving oxysterol accumulation and inflammation.

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