Co-treatment of birinapant with TRAIL synergistically induces apoptosis by downregulating cFLIP(L) in MDA-MB-453 cell lines

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Title
Co-treatment of birinapant with TRAIL synergistically induces apoptosis by downregulating cFLIP(L) in MDA-MB-453 cell lines
Author(s)
Eun Jung Park; H D Kim; Eun Kyoung Choi; K L Hoe; Dong Uk Kim
Bibliographic Citation
Biochemical and Biophysical Research Communications, vol. 533, pp. 289-295
Publication Year
2020
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) has received much attention owing to its ability to specifically induce cell death in cancer. However, several types of cancer, including some forms of breast cancer, are resistant to TRAIL. Various chemotherapeutic agents, phytochemicals, and TRAIL combination therapies have been proposed to resolve TRAIL resistance. Here, we explored the sensitization effect of birinapant on TRAIL-induced apoptosis in the MDA-MB-453 cell line. Although neither birinapant nor TRAIL showed any cytotoxic effect when used alone, apoptosis was induced when birinapant and TRAIL were used together. Our data suggest that the combination of birinapant and TRAIL induces downregulation of FLICE-like inhibitory protein (cFLIP) (L) protein expression. Interestingly, cFLIP(L) overexpression reversed apoptosis caused by co-treatment with TRAIL. Taken together, our results indicate that a combination of birinapant and TRAIL may be a promising treatment for TRAIL-resistant breast cancer.
Keyword
TRAILBirinapantBreast cancerApoptosiscFLIP(L)
ISSN
0006-291X
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/j.bbrc.2020.09.031
Type
Article
Appears in Collections:
Division of Biomedical Research > Rare Disease Research Center > 1. Journal Articles
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