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1篇 您的检索式:作者名="David Matye"
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1Liver-specific microRNA-185 knockout promotes cholesterol dysregulation in mice显示文摘Background:The liver plays a key role in regulating whole body cholesterol homeostasis.Hepatic cholesterol accumulation causes liver injury in fatty liver disease and hypercholesterolemia increases the risk of cardiovascular disease.MicroRNAs(miRNAs,miRs)have been shown to regulate various pathways in cholesterol metabolism.Recently,miR-185 has been shown to regulate sterol regulatory element-binding protein 2(SREBP2)and low-density lipoprotein receptor(LDLR)to modulate cholesterol syn-thesis and uptake.Materials and methods:The role of miR-185 in regulating diet-induced metabolic disorders were studied in liver-specific miRNA-185 knockout(L-miR-185 KO)mice.Results:L-miR-185 KO mice developed worsened hepatic steatosis upon high-fat high-cholesterol Western diet feeding with accumulation of triglyceride and cholesterol in the liver.In addition,L-miR-185 KO mice developed hypercholesterolemia upon Western diet feeding.Gene expression analysis showed that L-miR-185 KO mice did not show increased hepatic mRNA expression of SREBP2 or its targets LDLR and HMG-CoA reductase(HMGCR).Although expression of miR-185 mimic inhibited the mRNA of SREBP2,HMGCR and LDLR in HepG2 cells,miR-185 inhibitor did not increase the mRNA of SREBP2,HMGCR or LDLR in HepG2 cells.Conclusions:In conclusion,we reported that L-miR-185 KO mice were more sensitive to Western diet induced hepatic steatosis and hypercholesterolemia.The molecular mechanisms underlying these metabolic changes remain to be investigated in future studies.Cheng Chen David Matye Yifeng Wang Tiangang Li 2021Liver Research2021,5,4:1
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