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Lessons from hepatocyte-specific cyp51 knockout mice [Elektronski vir] : impaired cholesterol synthesis leads to oval cell-driven liver injuryLorbek, Gregor ...We demonstrate unequivocally that defective cholesterol synthesis is an independent determinant of liver inflammation and fibrosis. We prepared a mouse hepatocyte-specific knockout (LKO) of ... lanosterol 14 a -demethylase (CYP51) from the part of cholesterol synthesis that is already committed to cholesterol. LKO mice developed hepatomegaly with oval cell proliferation, fibrosis and inflammation, but without steatosis. The key trigger was reduced cholesterol esters that provoked cell cycle arrest, senescence-associated secretory phenotype and ultimately the oval cell response, while elevated CYP51 substrates promoted the integrated stress response. In spite of the oval cell-driven fibrosis being histologically similar in both sexes, data indicates a female-biased down-regulation of primary metabolism pathways and a stronger immune response in males. Liver injury was ameliorated by dietary fats predominantly in females, whereas dietary cholesterol rectified fibrosis in both sexes. Our data place defective cholesterol synthesis as a focus of sex-dependent liver pathologies.Source: Scientific reports [Elektronski vir]. - ISSN 2045-2322 (Vol. 5, art. no.8777, Mar. 2015, str. 1-11)Type of material - e-article ; adult, seriousPublish date - 2015Language - englishCOBISS.SI-ID - 31858137
Author
Lorbek, Gregor |
Perše, Martina, 1975- |
Jeruc, Jera |
Juvan, Peter, računalničar |
Gutiérrez Mariscal, Francisco Miguel |
Lewinska, Monika |
Gebhardt, Rolf |
Keber, Rok, univ. dipl. biol., 1982- |
Horvat, Simon |
Bjorkhem, Ingemar |
Rozman, Damjana, 1960-
Topics
cholesterol synthesis |
hepatocyte |
liver injury |
sinteza holesterola |
hepatociti |
okvare jeter
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Lorbek, Gregor | 33090 |
Perše, Martina, 1975- | 23082 |
Jeruc, Jera | 19130 |
Juvan, Peter, računalničar | 21352 |
Gutiérrez Mariscal, Francisco Miguel | |
Lewinska, Monika | |
Gebhardt, Rolf | |
Keber, Rok, univ. dipl. biol., 1982- | 29432 |
Horvat, Simon | 10412 |
Bjorkhem, Ingemar | |
Rozman, Damjana, 1960- | 06013 |
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