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2016 ; 7
(7
): 7372-80
Nephropedia Template TP
gab.com Text
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Antimetabolite TTL-315 selectively kills glucose-deprived cancer cells and
enhances responses to cytotoxic chemotherapy in preclinical models of cancer
#MMPMID26840263
DuHadaway J
; Prendergast GC
Oncotarget
2016[Feb]; 7
(7
): 7372-80
PMID26840263
show ga
Maintaining thiol homeostasis is an imperative for cancer cell survival in the
nutrient-deprived microenvironment of solid tumors. Despite this metabolic
vulnerability, a selective approach has yet to be developed to disrupt thiol
homeostasis in solid tumors for therapeutic purposes. In this study, we report
the identification of 2-mercaptopropionyl glycine disulfide (TTL-315) as a novel
antimetabolite that blocks cell survival in a manner conditional on glucose
deprivation. In the presence of glucose, TTL-315 lacks cytotoxic effects in
normal cells where it is detoxified by reduction to 2-mercaptopropionyl glycine,
a compound with known clinical pharmacologic and safety profiles. In several
rodent models of aggressive breast, lung and skin cancers, TTL-315 blocked tumor
growth and cooperated with the DNA damaging drug cisplatin to trigger tumor
regression. Our results offer preclinical proof of concept for TTL-315 as a novel
antimetabolite to help selectively eradicate solid tumors by exploiting the
glucose-deprived conditions of the tumor microenvironment.
|Animals
[MESH]
|Antimetabolites/*pharmacology
[MESH]
|Antineoplastic Agents/pharmacology
[MESH]
|Apoptosis/*drug effects
[MESH]
|Carcinoma, Lewis Lung/drug therapy/metabolism/*pathology
[MESH]