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Cited by 600

The DOI matches its Crossref record; 6 of the 6 references it cites were found in a registry or an index.

TNF‐α acts via p38 MAPK to stimulate expression of the ubiquitin ligase atrogin1/MAFbx in skeletal muscle

Open access
Li, Yi-Ping, Chen, Yuling, John, Joseph, Moylan, Jennifer, Jin, Bingwen, Mann, Douglas L., Reid, Michael B.·2005·The FASEB Journal

Abstract

Atrogin1/MAFbx is an ubiquitin ligase that mediates muscle atrophy in a variety of catabolic states. We recently found that H 2 O 2 stimulates atrogin1/MAFbx gene expression. Since the cytokine tumor necrosis factor‐α (TNF‐α) stimulates both reactive oxygen production and general activity of the ubiquitin conjugating pathway, we hypothesized that TNF‐α would also increase atrogin1/MAFbx gene expression. As with H 2 O 2 , we found that TNF‐α exposure up‐regulates atrogin1/MAFbx mRNA within2hin C2C12 myotubes. Intraperitoneal injection of TNF‐α increased atrogin1/MAFbx mRNA in skeletal muscle of adult mice within 4 h. Exposing myotubes to either TNF‐α or H 2 O 2 also produced general activation of the mitogen‐activated protein kinases (MAPKs): p38, ERK1/2, and JNK. The increase in atrogin1/MAFbx gene expression induced by TNF‐α was not altered significantly by ERK inhibitor PD98059 or the JNK inhibitor SP600125. In contrast, atrogin1/MAFbx up‐regulation and the associated increase in ubiquitin conjugating activity were both blunted by p38 inhibitors, either SB203580 or curcumin. These data suggest that TNF‐α acts via p38 to increase atrogin1/MAFbx gene expression in skeletal muscle.—Li, Y.‐P., Chen, Y., John, J., Moylan, J., Jin, B., Mann, D. L., Reid, M. B. TNF‐α acts via p38 MAPK to stimulate expression of the ubiquitin ligase atrogin1/MAFbx in skeletal muscle. FASEB J. 19, 362–370 (2005)

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Metadata

Authors
Li, Y.-P., Chen, Y., John, J., Moylan, J., Jin, B., Mann, D. L., & Reid, M. B.
Venue
The FASEB Journal
Publisher
Wiley
Published
2005-03
Volume
19
Issue
3
Pages
362-370
ISSN
  • 0892-6638 (ISSN-L)
  • 1530-6860
OpenAlex
W2130250591
Cited by
600
References
6
FWCI
10.26
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: TNF‐α acts via p38 MAPK to stimulate expression of the ubiquitin ligase atrogin1/MAFbx in skeletal muscle. https://app.cochat.ai/papers/10.1096/fj.04-2364com
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Li, Y.-P., Chen, Y., John, J., Moylan, J., Jin, B., Mann, D. L., & Reid, M. B. (2005). TNF‐α acts via p38 MAPK to stimulate expression of the ubiquitin ligase atrogin1/MAFbx in skeletal muscle. The FASEB Journal. https://doi.org/10.1096/fj.04-2364com

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