Abstract

Non-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.

Details

Title
ER-residential Nogo-B accelerates NAFLD-associated HCC mediated by metabolic reprogramming of oxLDL lipophagy
Author
Tian, Yuan 1 ; Yang, Bin 2 ; Qiu, Weinan 2 ; Hao, Yajing 3 ; Zhang, Zhenxing 2 ; Yang, Bo 2 ; Li, Nan 4 ; Cheng, Shuqun 4 ; Lin, Zhangjun 1 ; Yao-cheng, Rui 5 ; Cheung, Otto K W 6 ; Yang, Weiqin 6 ; Wu, William K K 7 ; Yue-Sun, Cheung 8 ; Lai, Paul B S 8 ; Luo, Jianjun 9 ; Sung, Joseph J Y 10 ; Chen, Runsheng 9 ; Hong-Yang, Wang 11 ; Cheng, Alfred S L 12 ; Yang, Pengyuan 13 

 Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China 
 Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China 
 University of Chinese Academy of Sciences, Beijing, China; Key Laboratory of RNA Biology of CAS, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China 
 Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China 
 Department of Pharmacology and School of Pharmacy, Second Military Medical University, Shanghai, China 
 School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China 
 State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China; Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China 
 Department of Surgery, The Chinese University of Hong Kong, Hong Kong, China 
 Key Laboratory of RNA Biology of CAS, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China 
10  State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China; Department of Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong SAR, China 
11  Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China; National Center for Liver Cancer, Second Military Medical University, Shanghai, China 
12  School of Biomedical Sciences, The Chinese University of Hong Kong, Hong Kong, China; State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong, China 
13  Key Laboratory of Infection and Immunity of CAS, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China; University of Chinese Academy of Sciences, Beijing, China; National Center for Liver Cancer, Second Military Medical University, Shanghai, China 
Pages
1-16
Publication year
2019
Publication date
Jul 2019
Publisher
Nature Publishing Group
e-ISSN
20411723
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2266313135
Copyright
© 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.