ER-residential Nogo-B accelerates NAFLD-associated HCC mediated by metabolic reprogramming of oxLDL lipophagy
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AbstractNon-alcoholic fatty liver disease (NAFLD) is the hepatic manifestation of the metabolic syndrome that elevates the risk of hepatocellular carcinoma (HCC). Although alteration of lipid metabolism has been increasingly recognized as a hallmark of cancer cells, the deregulated metabolic modulation of HCC cells in the NAFLD progression remains obscure. Here, we discovers an endoplasmic reticulum-residential protein, Nogo-B, as a highly expressed metabolic modulator in both murine and human NAFLD-associated HCCs, which accelerates high-fat, high-carbohydrate diet-induced metabolic dysfunction and tumorigenicity. Mechanistically, CD36-mediated oxLDL uptake triggers CEBPβ expression to directly upregulate Nogo-B, which interacts with ATG5 to promote lipophagy leading to lysophosphatidic acid-enhanced YAP oncogenic activity. This CD36-Nogo-B-YAP pathway consequently reprograms oxLDL metabolism and induces carcinogenetic signaling for NAFLD-associated HCCs. Targeting the Nogo-B pathway may represent a therapeutic strategy for HCC arising from the metabolic syndrome.
All Author(s) ListYuan TIAN, Bin YANG, Weinan QIU, Yajing HAO, Zhenxing ZHANG, Bo YANG, Nan LI, Shuqun CHENG, Zhangjun LIN, Yao-cheng RUI, Otto K. W. CHEUNG, Weiqin YANG, William K. K. WU, Yue-Sun CHEUNG, Paul B. S. LAI, Jianjun LUO, Joseph J. Y. SUNG, Runsheng CHEN, Hong-Yang WANG, Alfred S. L. CHENG, Pengyuan YANG
Journal nameNature Communications
Year2019
Month7
Day29
Volume Number10
PublisherNATURE PUBLISHING GROUP
Article number3391
ISSN2041-1723
LanguagesEnglish-United Kingdom
Web of Science Subject CategoriesMultidisciplinary Sciences;Science & Technology - Other Topics

Last updated on 2020-22-11 at 23:04