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Docetaxel-triggered SIDT2/NOX4/JNK/HuR signaling axis is associated with TNF- α-mediated apoptosis of cancer cells
Biochem Pharmacol. 2021 Dec 2:114865. doi: 10.1016/j.bcp.2021.114865. Online ahead of print.ABSTRACTPrevious studies have confirmed that docetaxel (DTX) treatment increases TNF-α production in cancer cells, but its mechanism of action remains unclear. Therefore, this study aimed to determine the signaling axis by which DTX induced the expression of TNF-α in U937 leukemia and MCF-7 breast carcinoma cells. DTX treatment promoted Ca2+-controlled autophagy and SIDT2 expression, resulting in lysosomal degradation of miR-25 in U937 cells. Downregulation of miR-25 increased NOX4 mRNA stability and protein expression. NOX4-stimu...
Source: Biochemical Pharmacology - December 5, 2021 Category: Drugs & Pharmacology Authors: Liang-Jun Wang Jing-Ting Chiou Yuan-Chin Lee Long-Sen Chang Source Type: research

Identification of upregulated phosphoinositide 3-kinase γ as a target to suppress breast cancer cell migration and invasion.
Abstract Metastasis is the major cause of breast cancer mortality. We recently reported that aberrant G-protein coupled receptor (GPCR) signaling promotes breast cancer metastasis by enhancing cancer cell migration and invasion. Phosphatidylinositol 3-kinase γ (PI3Kγ) is specifically activated by GPCRs. The goal of the present study was to determine the role of PI3Kγ in breast cancer cell migration and invasion. Immunohistochemical staining showed that the expression of PI3Kγ protein was significantly increased in invasive human breast carcinoma when compared to adjacent benign breast tissue or ductal carcinom...
Source: Biochemical Pharmacology - May 15, 2013 Category: Drugs & Pharmacology Authors: Xie Y, Abel PW, Kirui JK, Deng C, Sharma P, Wolff DW, Toews ML, Tu Y Tags: Biochem Pharmacol Source Type: research