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Updated: Aug 8, 2026
11:27
A Guide to Production, Crystallization, and Structure Determination of Human IKK1/α
Published on: November 2, 2018
Key inflammatory signaling pathways are regulated by the proteasome
Jing Shen1, Julia Reis, David C Morrison
1Department of Basic Medical Science, School of Medicine, and Shock/Trauma Research Center, University of Missouri, Kansas City, MO 64108, USA.
Shock (Augusta, Ga.)
|May 9, 2006
Summary
Lipopolysaccharide (LPS) triggers gene regulation in macrophages, largely controlled by the proteasome. This discovery offers new therapeutic targets for Gram-negative sepsis and septic shock.
Area of Science:
- Immunology
- Molecular Biology
- Pharmacology
Background:
- Lipopolysaccharide (LPS) is a key component of Gram-negative bacteria, linked to sepsis and septic shock.
- Understanding LPS-mediated signaling is crucial for developing effective treatments.
Purpose of the Study:
- To investigate the role of the proteasome in LPS-induced gene regulation in macrophages.
- To identify novel signaling pathways dependent on both toll-like receptor 4 (TLR4) and the proteasome.
Main Methods:
- Murine macrophages were treated with LPS and the proteasome inhibitor lactacystin.
- Affymetrix microarray analysis was used to assess global gene expression changes.
Main Results:
- The proteasome significantly controls the majority of LPS-regulated genes.
- Gene products regulated by LPS and the proteasome participate in 14 distinct signaling pathways.
- Identified novel TLR4- and proteasome-dependent signaling pathways.
Conclusions:
- The proteasome plays a critical role in LPS-induced immune responses.
- These findings provide a new framework for identifying drug targets for Gram-negative sepsis and septic shock.
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