Abstract | BACKGROUND: Chk1 inhibitors are currently in clinical trials as putative potentiators of cytotoxic chemotherapy drugs. Chk1 inhibitors may exhibit single agent anti- tumor activity in cancers with underlying DNA repair, DNA damage response or DNA replication defects. METHODS: Here we describe the cellular effects of the pharmacological inhibition of the checkpoint kinase Chk1 by the novel inhibitor V158411 in triple-negative breast cancer and ovarian cancer. Cytotoxicity, the effect on DNA damage response and cell cycle along with the ability to potentiate gemcitabine and cisplatin cytotoxicity in cultured cells was investigated. Western blotting of proteins involved in DNA repair, checkpoint activation, cell cycle and apoptosis was used to identify potential predictive biomarkers of Chk1 inhibitor sensitivity. RESULTS: CONCLUSIONS:
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Authors | Christopher Bryant, Rebecca Rawlinson, Andrew J Massey |
Journal | BMC cancer
(BMC Cancer)
Vol. 14
Pg. 570
(Aug 07 2014)
ISSN: 1471-2407 [Electronic] England |
PMID | 25104095
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- 3-(carbamoylamino)-5-(3-fluorophenyl)-N-(3-piperidyl)thiophene-2-carboxamide
- Benzodiazepinones
- Biomarkers, Tumor
- Indoles
- PF 00477736
- Protein Kinase Inhibitors
- Pyrazoles
- Pyridones
- Thiophenes
- V158411
- Deoxycytidine
- Urea
- Protein Kinases
- CHEK1 protein, human
- Checkpoint Kinase 1
- Cisplatin
- Gemcitabine
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Topics |
- Benzodiazepinones
(pharmacology, therapeutic use)
- Biomarkers, Tumor
(metabolism)
- Cell Line, Tumor
- Checkpoint Kinase 1
- Cisplatin
(pharmacology)
- Deoxycytidine
(analogs & derivatives, pharmacology)
- Drug Synergism
- Female
- Gene Expression Regulation, Neoplastic
(drug effects)
- HT29 Cells
- Humans
- Indoles
(pharmacology, therapeutic use)
- MCF-7 Cells
- Ovarian Neoplasms
(metabolism, pathology)
- Protein Kinase Inhibitors
(pharmacology, therapeutic use)
- Protein Kinases
(metabolism)
- Pyrazoles
(pharmacology, therapeutic use)
- Pyridones
(pharmacology, therapeutic use)
- Thiophenes
(pharmacology, therapeutic use)
- Triple Negative Breast Neoplasms
(metabolism, pathology)
- Urea
(analogs & derivatives, pharmacology, therapeutic use)
- Gemcitabine
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