Metformin inhibits gastric cancer cell proliferation by regulation of a novel Loc100506691-CHAC1 axis
| Autor: | Yen-Chih Chen, Chung-Yu Yeh, Ya-Ting Tu, Nan-Hua Chou, You-Zuo Chen, Hui-Hwa Tseng, Li-Feng Liu, Chao-Chuan Wu, Yi-Fang Yang, Mei-Lang Kung, Kuo-Wang Tsai |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Cancer Research
Loc100506691 Normal tissue Biology lncRNA microRNA medicine Pharmacology (medical) RC254-282 Gastric cancer cell miRNA CHAC1 Cell growth gastric cancer digestive oral and skin physiology Neoplasms. Tumors. Oncology. Including cancer and carcinogens miR-26a-5p Cancer medicine.disease miR-330-5p Metformin Oncology Cancer cell Cancer research Molecular Medicine Original Article Metformin treatment metformin medicine.drug |
| Zdroj: | Molecular Therapy Oncolytics Molecular Therapy: Oncolytics, Vol 22, Iss, Pp 180-194 (2021) |
| ISSN: | 2372-7705 |
| DOI: | 10.1016/j.omto.2021.08.006 |
| Popis: | Long noncoding RNAs (lncRNAs) are a group of nonprotein coding transcripts that play a critical role in cancer progression. However, the role of lncRNA in metformin-induced inhibition of cell growth and its biological function in gastric cancer remain largely unknown. In this study, we identified an oncogenic lncRNA, Loc100506691, the expression of which was decreased in gastric cancer cells with metformin treatment. Moreover, Loc100506691 was significantly overexpressed in gastric cancer compared with adjacent normal tissues (p < 0.001), and high Loc100506691 expression was significantly correlated with poor survival of patients with gastric cancer. Additionally, Loc100506691 knockdown could significantly suppress gastric cancer cell growth in vitro, and ectopic Loc100506691 expression accelerated tumor growth in an in vivo mouse model. Analysis of the cell cycle revealed that Loc100506691 knockdown induced cell cycle arrest at the G2/M phase by impairing cell entry from the G2/M to G1 phase. Loc100506691 negatively regulated CHAC1 expression by modulating miR-26a-5p/miR-330-5p expression, and CHAC1 knockdown markedly attenuated Loc100506691 knockdown-induced gastric cancer cell growth and motility suppression. We concluded that anti-proliferative effects of metformin in gastric cancer may be partially caused by suppression of the Loc100506691-miR-26a-5p/miR-330-5p-CHAC1 axis. Graphical abstract This new signaling pathway broadens our understanding of the mechanism and anticancer potential of metformin in the treatment of gastric cancer. Our findings showed anti-proliferative effects of metformin in gastric cancer may be caused by suppression of the novel Loc100506691-CHAC1 axis. |
| Databáze: | OpenAIRE |
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