PMID- 34292642 OWN - NLM STAT- MEDLINE DCOM- 20220114 LR - 20240226 IS - 1527-3350 (Electronic) IS - 0270-9139 (Linking) VI - 74 IP - 6 DP - 2021 Dec TI - Fructose-1,6-Bisphosphate Aldolase B Depletion Promotes Hepatocellular Carcinogenesis Through Activating Insulin Receptor Signaling and Lipogenesis. PG - 3037-3055 LID - 10.1002/hep.32064 [doi] AB - BACKGROUND AND AIMS: Insulin receptor (IR) transduces cell surface signal through phosphoinositide 3-kinase (PI3K)-AKT pathways or translocates to the nucleus and binds to the promoters to regulate genes associated with insulin actions, including de novo lipogenesis (DNL). Chronic activation of IR signaling drives malignant transformation, but the underlying mechanisms remain poorly defined. Down-regulation of fructose-1,6-bisphosphate aldolase (ALDO) B in hepatocellular carcinoma (HCC) is correlated with poor prognosis. We aim to study whether and how ALDOB is involved in IR signaling in HCC. APPROACH AND RESULTS: Global or liver-specific ALDOB knockout (L-ALDOB(-/-) ) mice were used in N-diethylnitrosamine (DEN)-induced HCC models, whereas restoration of ALDOB expression was achieved in L-ALDOB(-/-) mice by adeno-associated virus (AAV). (13) C(6) -glucose was employed in metabolic flux analysis to track the de novo fatty acid synthesis from glucose, and nontargeted lipidomics and targeted fatty acid analysis using mass spectrometry were performed. We found that ALDOB physically interacts with IR and attenuates IR signaling through down-regulating PI3K-AKT pathways and suppressing IR nuclear translocation. ALDOB depletion or disruption of IR/ALDOB interaction in ALDOB mutants promotes DNL and tumorigenesis, which is significantly attenuated with ALDOB restoration in L-ALDOB(-/-) mice. Notably, attenuated IR/ALDOB interaction in ALDOB-R46A mutant exhibits more significant tumorigenesis than releasing ALDOB/AKT interaction in ALDOB-R43A, whereas knockdown IR sufficiently diminishes tumor-promoting effects in both mutants. Furthermore, inhibiting phosphorylated AKT or fatty acid synthase significantly attenuates HCC in L-ALDOB(-/-) mice. Consistently, ALDOB down-regulation is correlated with up-regulation of IR signaling and DNL in human HCC tumor tissues. CONCLUSIONS: Our study reports a mechanism by which loss of ALDOB activates IR signaling primarily through releasing IR/ALDOB interaction to promote DNL and HCC, highlighting a potential therapeutic strategy in HCC. CI - (c) 2021 by the American Association for the Study of Liver Diseases. FAU - Liu, Guijun AU - Liu G AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Wang, Ningning AU - Wang N AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Zhang, Cunzhen AU - Zhang C AD - Department of Hepatic Surgery I (Ward l), Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai, China. FAU - Li, Min AU - Li M AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - He, Xuxiao AU - He X AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Yin, Chunzhao AU - Yin C AD - School of Life Science and Technology, ShanghaiTech University, Shanghai, China. FAU - Tu, Qiaochu AU - Tu Q AD - School of Life Science and Technology, ShanghaiTech University, Shanghai, China. FAU - Shen, Xia AU - Shen X AD - School of Life Science and Technology, ShanghaiTech University, Shanghai, China. FAU - Zhang, Lili AU - Zhang L AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Lv, Jingwen AU - Lv J AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Wang, Yongqiang AU - Wang Y AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Jiang, Huimin AU - Jiang H AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Chen, Shiting AU - Chen S AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Li, Nan AU - Li N AD - Department of Hepatic Surgery I (Ward l), Shanghai Eastern Hepatobiliary Surgery Hospital, Shanghai, China. FAU - Tao, Yongzhen AU - Tao Y AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. FAU - Yin, Huiyong AU - Yin H AUID- ORCID: 0000-0001-7049-1560 AD - CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health (SINH), University of the Chinese Academy of Sciences (UCAS), Chinese Academy of Sciences (CAS), Shanghai, China. AD - School of Life Science and Technology, ShanghaiTech University, Shanghai, China. AD - Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210826 PL - United States TA - Hepatology JT - Hepatology (Baltimore, Md.) JID - 8302946 RN - 0 (Fatty Acids) RN - 3IQ78TTX1A (Diethylnitrosamine) RN - EC 2.7.10.1 (Receptor, Insulin) RN - EC 4.1.2.13 (Fructose-Bisphosphate Aldolase) SB - IM MH - Animals MH - Carcinogenesis/chemically induced/*genetics/pathology MH - Cell Line, Tumor MH - Diethylnitrosamine/administration & dosage MH - Down-Regulation MH - Fatty Acids/biosynthesis MH - Fructose-Bisphosphate Aldolase/genetics/*metabolism MH - Gene Expression Regulation, Neoplastic MH - Lipidomics MH - Lipogenesis/*genetics MH - Liver/metabolism/pathology MH - Liver Neoplasms, Experimental/chemically induced/*genetics/metabolism/pathology MH - Male MH - Mice, Knockout MH - Phosphorylation MH - Receptor, Insulin/*metabolism MH - Mice EDAT- 2021/07/23 06:00 MHDA- 2022/01/15 06:00 CRDT- 2021/07/22 12:40 PHST- 2021/06/11 00:00 [revised] PHST- 2021/01/29 00:00 [received] PHST- 2021/06/28 00:00 [accepted] PHST- 2021/07/23 06:00 [pubmed] PHST- 2022/01/15 06:00 [medline] PHST- 2021/07/22 12:40 [entrez] AID - 10.1002/hep.32064 [doi] PST - ppublish SO - Hepatology. 2021 Dec;74(6):3037-3055. doi: 10.1002/hep.32064. Epub 2021 Aug 26.