机构:[1]Department of Liver Surgery,The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China外科科室肝外科中山大学附属第一医院[2]Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, China其他部门华南肿瘤学国家重点实验室中山大学肿瘤防治中心[3]Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China[4]Department of Biliary and Pancreatic Surgery,The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China外科科室胃肠外科中心胃肠外科三科(胃肠胰腺外科)中山大学附属第一医院[5]School of Life Sciences, Sun Yat-sen University, Guangzhou 510080, China
Background. Although expression of miR-200s is aberrant in liver fibrosis, its role in liver fibrogenesis still remains unknown. Here, we investigated the role of miR-200c in the activation of human hepatic stellate cells (HSCs) and induction of liver fibrosis. Methods. We engineered human HSCs (LX2 cell line) to stably express miR-200c (LX2-200c) or empty vector control (LX2-nc). Results. miR-200c expression upregulated alpha-smooth muscle actin (SMA) and vimentin, enhanced HSCs growth and migration, increased expression of collagen type I (a main component of ECM) gene and secretion of epidermal growth factor (EGF), and upregulated the phosphorylation of Akt, a downstream effector of the PI3K pathway. As a target of miR-200s and inhibitor of PI3K pathway, FOG2 protein expression was significantly suppressed in LX2-200c cells. Moreover, LY294002, a highly selective inhibitor of PI3K, blocked phosphorylation of Akt and the effects of miR-200c. Conclusions. These data suggest that miR-200c activates HSCs in liver fibrosis possibly by downregulating FOG2 protein expression and upregulating PI3K/Akt signaling. Autocrine activation of EGF signaling may also be a mechanism of miR-200c-mediated HSCs activation. So miR-200c can be a potential marker for HSCs activation and liver fibrosis progression, as well as a potential target to attenuate liver fibrosis.
基金:
National Natural Science Foundation of China [81201918]; Science and Technology Project of Guangdong Province [2012B031800099, 2014A020212626]; Doctorial Fellowship of Higher Education of China [200805581172]; Scientific Research Foundation for Returned Overseas Chinese Scholars; State Education Ministry [311]
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外文
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出版当年[2017]版:
大类|3 区生物
小类|3 区生物工程与应用微生物4 区医学:研究与实验
最新[2023]版:
无
第一作者:
第一作者机构:[1]Department of Liver Surgery,The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China[2]Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, China[3]Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
共同第一作者:
通讯作者:
通讯机构:[1]Department of Liver Surgery,The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China[2]Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center of Cancer Medicine, Guangzhou, China[3]Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
推荐引用方式(GB/T 7714):
Tengfei Ma ,Xiuqin Cai ,Zifeng Wang ,et al.miR-200c Accelerates Hepatic Stellate Cell-Induced Liver Fibrosis via Targeting the FOG2/PI3K Pathway[J].BIOMED RESEARCH INTERNATIONAL.2017,2017:-.doi:10.1155/2017/2670658.
APA:
Tengfei Ma,,Xiuqin Cai,,Zifeng Wang,,Li Huang,,Chang Wang,...&Quentin Liu.(2017).miR-200c Accelerates Hepatic Stellate Cell-Induced Liver Fibrosis via Targeting the FOG2/PI3K Pathway.BIOMED RESEARCH INTERNATIONAL,2017,
MLA:
Tengfei Ma,,et al."miR-200c Accelerates Hepatic Stellate Cell-Induced Liver Fibrosis via Targeting the FOG2/PI3K Pathway".BIOMED RESEARCH INTERNATIONAL 2017.(2017):-