Title : Glutamine deprivation sensitizes human breast cancer MDA-MB-231 cells to TRIAL-mediated apoptosis.

Pub. Date : 2017 Apr 1

PMID : 28202415






11 Functional Relationships(s)
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1 Therefore, we examined whether treatment with TNF-related apoptosis-inducing ligand (TRAIL) sensitizes MDA-MB-231 cells to apoptosis under Gln deprivation condition (TRAIL/Gln deprivation). Glutamine TNF superfamily member 10 Homo sapiens
2 Therefore, we examined whether treatment with TNF-related apoptosis-inducing ligand (TRAIL) sensitizes MDA-MB-231 cells to apoptosis under Gln deprivation condition (TRAIL/Gln deprivation). Glutamine TNF superfamily member 10 Homo sapiens
3 Therefore, we examined whether treatment with TNF-related apoptosis-inducing ligand (TRAIL) sensitizes MDA-MB-231 cells to apoptosis under Gln deprivation condition (TRAIL/Gln deprivation). Glutamine TNF superfamily member 10 Homo sapiens
4 TRAIL/Gln deprivation, however, significantly increased growth inhibition and morphological shrinkage of MDA-MB-231 cells compared to those induced by treatment with either Gln deprivation or TRAIL alone. Glutamine TNF superfamily member 10 Homo sapiens
5 TRAIL/Gln deprivation, however, significantly increased growth inhibition and morphological shrinkage of MDA-MB-231 cells compared to those induced by treatment with either Gln deprivation or TRAIL alone. Glutamine TNF superfamily member 10 Homo sapiens
6 Moreover, TRAIL/Gln deprivation upregulated the apoptotic sub-G1 phase accompanied with a remarkable decrease of pro-caspase-3, pro-caspase-9, and anti-apoptotic xIAP, and Bcl-2. Glutamine TNF superfamily member 10 Homo sapiens
7 Increased cleavage of PARP and pro-apoptotic Bid protein expression suggests that TRAIL/Gln deprivation triggers mitochondrion-mediated apoptosis in MDA-MB-231 cells. Glutamine TNF superfamily member 10 Homo sapiens
8 Additionally, TRAIL/Gln deprivation upregulated the expression of endoplasmic reticulum (ER) stress markers such as ATF4 and phosphorylated eIF2alpha, thereby enhancing the C/EBP homologous protein (CHOP) protein level. Glutamine TNF superfamily member 10 Homo sapiens
9 Accordingly, TRAIL/Gln deprivation enhanced the expression of death receptor 5 (DR5) and transient knockdown of DR5 completely restored TRAIL/Gln deprivation-mediated apoptosis. Glutamine TNF superfamily member 10 Homo sapiens
10 Accordingly, TRAIL/Gln deprivation enhanced the expression of death receptor 5 (DR5) and transient knockdown of DR5 completely restored TRAIL/Gln deprivation-mediated apoptosis. Glutamine TNF superfamily member 10 Homo sapiens
11 Taken together, our results suggest that Gln deprivation conditions can be used for the development of new therapies for TRAIL-resistant cancers. Glutamine TNF superfamily member 10 Homo sapiens