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Gene expression profiling from pooled samples of liver tissue of liver MyD88 WT mice and MyD88 liver specific KO mice fed either with a control diet or a high-fat diet.

ABSTRACT: Mice wild type or knocked-out for the MyD88 gene specifically in liver, were recruited for this expression profiling experiment. Each group of mice (WT versus LKO) were fed with a control diet or a high fat diet. Then mice were sacrificed and liver samples form were processed for RNA extraction. Total liver RNA of each sample was then pooled with those of the same group and treatment for microarray hybridization.

ORGANISM(S): Mus musculus

PROVIDER: GSE73489 | GEO | 2016/09/13

SECONDARY ACCESSION(S): PRJNA297178

REPOSITORIES: GEO

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Project description:Metabolic-associated steatohepatitis (MASH), the inflammatory stage of MASLD, will soon be one of the primary causes of liver-related complications, including advanced fibrosis and hepatocellular carcinoma. Its steady increase in both the US and the global population is devastating. Between the two genders, more women are suffering from MASH compared to the man due to estrogen deficiency caused by polycystic ovary syndrome or menopause. Our published data shows a clear positive association between the progression of liver disease and the expression of novel hexokinase HKDC1 in the liver. Targeting HKDC1, which is highly expressed in pathological hepatocytes (in MASH) but negligible in normal hepatocytes, represents a highly selective approach. Therefore, we hypothesized that liver-specific deletion of HKDC1 will protect against diet-induced obesity and the progression of MASH to fibrosis. We used an early-onset liver knockout (LKO) of HKDC1 by crossing HKDC1 floxed mice with Albumin Cre mice to test our hypothesis. We fed the Western Diet to HKDC1LKO female mice along with HKDC1 floxed mice (HKDC1fl/fl; as Controls) for 28 weeks. Our data shows that HKDC1 deletion significantly decreases body weight and fat mass compared to HKDC1fl/fl mice with no changes in food intake and energy expenditure. Knockout mice have better glucose tolerance and lower fasting glucose levels than HKDC1fl/fl mice. Our data also shows that the knockout group has smaller livers, healthier liver parameters, less steatosis, and lower NAS and fibrosis scores. Furthermore, HKDC1 knockout alters hepatic gene expression, and we found significantly low proinflammatory and profibrogenic gene expression in the LKO mice. Although we did not see any changes in triglyceride levels, there was a significant reduction of serum cholesterol concomitant with enhanced expression of cholesterol metabolism genes in the knockout group. Our data suggest a promising protective role of HKDC1 deletion against diet-induced obesity and MASH mice.

Dataset Information

Gene expression profiling from pooled samples of liver tissue of liver MyD88 WT mice and MyD88 liver specific KO mice fed either with a control diet or a high-fat diet.

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