Publication Date:
2010-06-05
Description:
In the classical form of alpha1-antitrypsin (AT) deficiency, a point mutation in AT alters the folding of a liver-derived secretory glycoprotein and renders it aggregation-prone. In addition to decreased serum concentrations of AT, the disorder is characterized by accumulation of the mutant alpha1-antitrypsin Z (ATZ) variant inside cells, causing hepatic fibrosis and/or carcinogenesis by a gain-of-toxic function mechanism. The proteasomal and autophagic pathways are known to mediate degradation of ATZ. Here we show that the autophagy-enhancing drug carbamazepine (CBZ) decreased the hepatic load of ATZ and hepatic fibrosis in a mouse model of AT deficiency-associated liver disease. These results provide a basis for testing CBZ, which has an extensive clinical safety profile, in patients with AT deficiency and also provide a proof of principle for therapeutic use of autophagy enhancers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Hidvegi, Tunda -- Ewing, Michael -- Hale, Pamela -- Dippold, Christine -- Beckett, Caroline -- Kemp, Carolyn -- Maurice, Nicholas -- Mukherjee, Amitava -- Goldbach, Christina -- Watkins, Simon -- Michalopoulos, George -- Perlmutter, David H -- DK076918/DK/NIDDK NIH HHS/ -- HL037784/HL/NHLBI NIH HHS/ -- R01 DK076918/DK/NIDDK NIH HHS/ -- R01 DK084512/DK/NIDDK NIH HHS/ -- RR022241/RR/NCRR NIH HHS/ -- New York, N.Y. -- Science. 2010 Jul 9;329(5988):229-32. doi: 10.1126/science.1190354. Epub 2010 Jun 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Pediatrics, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20522742" target="_blank"〉PubMed〈/a〉
Keywords:
Animals
;
Autophagy/*drug effects
;
Carbamazepine/administration & dosage/*pharmacology/therapeutic use
;
Cell Line
;
Disease Models, Animal
;
Endoplasmic Reticulum/metabolism
;
HeLa Cells
;
Humans
;
Liver/drug effects/*metabolism/pathology
;
Liver Cirrhosis/*drug therapy/etiology/metabolism/pathology
;
Mice
;
Mice, Transgenic
;
Mutant Proteins/chemistry/metabolism
;
Phagosomes/drug effects/ultrastructure
;
Phenotype
;
Proteasome Endopeptidase Complex/metabolism
;
Protein Folding
;
Solubility
;
alpha 1-Antitrypsin/chemistry/genetics/*metabolism
;
alpha 1-Antitrypsin Deficiency/complications/*metabolism/pathology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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