Human Embryonic Stem Cells Acquire Responsiveness to TRAIL upon Exposure to Cisplatin
Joint Authors
Pešková, Lucie
Vinarský, Vladimír
Bárta, Tomáš
Hampl, Aleš
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-21
Country of Publication
Egypt
No. of Pages
11
Abstract EN
Tumor necrosis factor-related apoptosis-inducing ligand—TRAIL—is a protein operating as a ligand capable of inducing apoptosis particularly in cancerously transformed cells, while normal healthy cells are typically nonresponsive.
We have previously demonstrated that pluripotent human embryonic stem cells (hESC) are also refractory to TRAIL, even though they express all canonical components of the death receptor-induced apoptosis pathway.
In this study, we have examined a capacity of DNA damage to provoke sensitivity of hESC to TRAIL.
The extent of DNA damage, behavior of molecules involved in apoptosis, and response of hESC to TRAIL were investigated.
The exposure of hESC to 1 μM and 2 μM concentrations of cisplatin have led to the formation of 53BP1 and γH2AX foci, indicating the presence of double-strand breaks in DNA, without affecting the expression of proteins contributing to mitochondrial membrane integrity.
Interestingly, cisplatin upregulated critical components of the extrinsic apoptotic pathway—initiator caspase 8, effector caspase 3, and the cell death receptors.
The observed increase of expression of the extrinsic apoptotic pathway components was sufficient to sensitize hESC to TRAIL-induced apoptosis; immense cell dying accompanied by enhanced PARP cleavage, processing of caspase 8, and full activation of caspase 3 were all observed after the treatment combining cisplatin and TRAIL.
Finally, we have demonstrated the central role of caspase 8 in this process, since its downregulation abrogated the sensitizing effect of cisplatin.
American Psychological Association (APA)
Pešková, Lucie& Vinarský, Vladimír& Bárta, Tomáš& Hampl, Aleš. 2019. Human Embryonic Stem Cells Acquire Responsiveness to TRAIL upon Exposure to Cisplatin. Stem Cells International،Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1208832
Modern Language Association (MLA)
Pešková, Lucie…[et al.]. Human Embryonic Stem Cells Acquire Responsiveness to TRAIL upon Exposure to Cisplatin. Stem Cells International No. 2019 (2019), pp.1-11.
https://search.emarefa.net/detail/BIM-1208832
American Medical Association (AMA)
Pešková, Lucie& Vinarský, Vladimír& Bárta, Tomáš& Hampl, Aleš. Human Embryonic Stem Cells Acquire Responsiveness to TRAIL upon Exposure to Cisplatin. Stem Cells International. 2019. Vol. 2019, no. 2019, pp.1-11.
https://search.emarefa.net/detail/BIM-1208832
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1208832