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Iwasaki S, Hidaka H, Uojima H, Kubo H, Adachi K, Wada N, Kubota K, Nakazawa T, Shibuya A, Kusano C. A case of successful treatment with lenvatinib in primary hepatoid adenocarcinoma of the gallbladder that was difficult to distinguish from hepatocellular carcinoma. Clin J Gastroenterol 2022; 15:1108-1114. [DOI: 10.1007/s12328-022-01686-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 08/01/2022] [Indexed: 11/24/2022]
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Zheng Y, Liang M, Wang B, Kang L, Yuan Y, Mao Y, Wang S. GALNT12 is associated with the malignancy of glioma and promotes glioblastoma multiforme in vitro by activating Akt signaling. Biochem Biophys Res Commun 2022; 610:99-106. [PMID: 35461073 DOI: 10.1016/j.bbrc.2022.04.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 04/11/2022] [Accepted: 04/11/2022] [Indexed: 12/15/2022]
Abstract
Abnormal expression of mucin-type O-glycosylation has been reported to be associated with a variety of human cancers including gliomas. However, little is known about its contribution to the malignancy of Glioblastoma Multiforme (GBM), the deadliest form of brain tumors. Here, we conducted a detailed analysis of the expression profiles of GALNT gene family, which encode polypeptide-N-acetyl-galactosaminyltransferases (GalNAc-Ts) and are responsible for initiating O-glycans, both in the Cancer Genome Atlas (TCGA) and in the Chinese Glioma Genome Atlas (CGGA) databases. We discovered that GALNT12 is the only member within the GALNT family, whose expression demonstrated significant correlation with a worse prognosis of GBM. Genetic knockdown (KD) and knockout (KO) of GALNT12 in U87 MG, a representative GBM cell line with high GALNT12 expression, confirmed that GALNT12 deficiency leads to decreased cell proliferation, migration and invasion. Mechanism study revealed that GALNT12 KD and KO decreased the level of epidermal growth factor (EGF) and consequently attenuated Akt signaling within the cell. In summary, our results indicated that GALNT12 facilitates the malignant characteristics of GBM by influencing the PI3K/Akt/mTOR axis and may serve as a novel prognosis biomarker and a potential therapeutic target of GBM.
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Affiliation(s)
- Yongjia Zheng
- School of Pharmaceutical Sciences, National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation, Sun Yat-sen University, Guangzhou, 510006, China
| | - Minting Liang
- School of Pharmaceutical Sciences, National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation, Sun Yat-sen University, Guangzhou, 510006, China
| | - Bowen Wang
- College of Life Science, Northwest University, Xi'an, 710127, China
| | - Li Kang
- School of Pharmaceutical Sciences, National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yanqiu Yuan
- School of Pharmaceutical Sciences, National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation, Sun Yat-sen University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Drug Non-Clinical Evaluation and Research, Guangzhou, 510990, China
| | - Yang Mao
- School of Pharmaceutical Sciences, National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation, Sun Yat-sen University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Drug Non-Clinical Evaluation and Research, Guangzhou, 510990, China.
| | - Shengjun Wang
- School of Pharmaceutical Sciences, National-Local Joint Engineering Laboratory of Druggability and New Drugs Evaluation, Sun Yat-sen University, Guangzhou, 510006, China; Guangdong Provincial Key Laboratory of Drug Non-Clinical Evaluation and Research, Guangzhou, 510990, China.
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