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Modifications in P62 occur due to proteasome inhibition in alcoholic liver disease

Bardag-Gorce, Fawzia, Francis, Tricia, Nan, Li, Li, Jun, He Lue, Yan, French, Barbara A., French, Samuel W.·2005·Life Sciences
DOI 10.1016/j.lfs.2005.04.020
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Abstract

P62 is capable of binding the polyubiquitin chain that targets proteins for degradation by the proteasome through its ubiquitin associated domain (UBA). Immunostaining of hepatocytes from human liver with alcoholic hepatitis showed colocalization of ubiquitin and P62 in Mallory bodies. Rats fed ethanol chronically and their controls showed that P62 is colocalized with the proteasome in hepatocytes as shown by confocal microscopy. P62 cosedimented with 26S proteasomes isolated from livers of control and alcohol fed rats. P62 was increased in the 26S proteasome fraction when the proteasome chymotrypsin-like (ChT-L) activity decreased in rats fed ethanol. PS-341, a potent proteasome inhibitor was used to compare the inhibition of the proteasome with the inhibition which occurs with ethanol feeding. P62 protein levels were also increased in the purified proteasome fraction of rats given PS-341. This data indicates that modifications in P62 occur due to proteasome inhibition in experimental alcoholic liver disease.

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Research works printed but not linked: 19

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Metadata

Authors
Bardag-Gorce, F., Francis, T., Nan, L., Li, J., He Lue, Y., French, B. A., & French, S. W.
Venue
Life Sciences
Publisher
Elsevier BV
Published
2005-09
Volume
77
Issue
20
Pages
2594-2602
ISSN
0024-3205
DOI
10.1016/j.lfs.2005.04.020
Cited by
43
References
1
Language
en
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)

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CoChat. (2026). Citation check: Modifications in P62 occur due to proteasome inhibition in alcoholic liver disease. https://app.cochat.ai/papers/10.1016/j.lfs.2005.04.020
The paper
Bardag-Gorce, F., Francis, T., Nan, L., Li, J., He Lue, Y., French, B. A., & French, S. W. (2005). Modifications in P62 occur due to proteasome inhibition in alcoholic liver disease. Life Sciences. https://doi.org/10.1016/j.lfs.2005.04.020