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Mutual regulation between chicken telomerase reverse transcriptase and the Wnt/ β-catenin signalling pathway inhibits apoptosis and promotes the replication of ALV-J in LMH cells
This study aimed to explore the mutual regulation between chicken telomerase reverse transcriptase (chTERT) and the Wnt/β-catenin signalling pathway and its effects on cell growth and avian leukosis virus subgroup J (ALV-J) replication in LMH cells. First, LMH cells stably overexpressing the chTERT gene (LMH-chTERT cells) and corresponding control cells (LMH-NC cells) were successfully constructed with a lentiviral vector expression system. The results showed that chTERT upregulated the expression of β-catenin, Cyclin D1, TCF4 and c-Myc. chTERT expression level and telomerase activity were increased when cells were treat...
Source: Cell Research - August 20, 2021 Category: Cytology Authors: Yong Xiang Yun Yu Qingbo Li Zeng Jiang Jinqun Li Canxin Liang Jian Chen Yu Li Xiaoyan Chen Weisheng Cao Source Type: research

Targeting host calpain proteases decreases influenza A virus infection.
Abstract Influenza A viruses (IAV) trigger contagious acute respiratory diseases. A better understanding of the molecular mechanisms of IAV pathogenesis and host immune responses is required for the development of more efficient treatments of severe influenza. Calpains are intracellular proteases that participate to diverse cellular responses, including inflammation. Here, we used in vitro and in vivo approaches to investigate the role of calpains signalling in IAV pathogenesis. Calpain expression and activity were found altered in IAV-infected bronchial epithelial cells. Using siRNA gene silencing, specific synth...
Source: American Journal of Physiology. Lung Cellular and Molecular Physiology - January 8, 2016 Category: Cytology Authors: Blanc F, Furio L, Moisy D, Yen HL, Chignard M, Letavernier E, Naffakh N, Mok CK, Si-Tahar M Tags: Am J Physiol Lung Cell Mol Physiol Source Type: research