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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

Myeloid Derived Suppressor Cells Interactions With Natural Killer Cells and Pro-angiogenic Activities: Roles in Tumor Progression
Conclusions MDSC are major players in the immunosuppressive scenario in cancer, thanks to their phenotype heterogeneity and critical interaction with several innate immune cells, thus representing a crucial target in oncology. Here we reviewed the interactions of MDSCs with NK cells. The contribution of key cytokines, chemokines and mediators active in this process have been discussed. We also described the contribution of MDSC on angiogenesis directly or indirectly through interactions with NK and immunosuppressive activities. A parallel of the cancer associated to the decidual counterpart of these cells is discussed, a...
Source: Frontiers in Immunology - April 17, 2019 Category: Allergy & Immunology Source Type: research