Journal
SCIENCE
Volume 289, Issue 5488, Pages 2350-2354Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.289.5488.2350
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Funding
- NIAID NIH HHS [R01 AI045860] Funding Source: Medline
- NIDDK NIH HHS [R01 DK052751] Funding Source: Medline
- NIGMS NIH HHS [T32 GM007839, T32GM07839, 5T32GM07183, T32 GM007183] Funding Source: Medline
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A20 is a cytoplasmic zinc finger protein that inhibits nuclear factor kappa B (NF-kappa B) activity and tumor necrosis factor (TNF)-mediated programmed cell death (PCD). TNF dramatically increases A20 messenger RNA expression in all tissues. Mice deficient far A20 develop severe inflammation and cachexia, are hypersensitive to both Lipopolysaccharide and TNF, and die prematurely. A20-deficient cells fail to terminate TNF-induced NF-kappa B responses. These cells are also more susceptible than control cells to undergo TNF-mediated PCD. Thus, AZO is critical for limiting inflammation by terminating TNF-induced NF-kappa B responses in vivo.
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