Radiosensitization of human leukemic HL-60 cells by ATR kinase inhibitor (VE-821): phosphoproteomic analysis.
Radiosensitization of human leukemic HL-60 cells by ATR kinase inhibitor (VE-821): phosphoproteomic analysis.
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DOI：
10.3390/ijms150712007
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发表时间：
2014-07-07
影响因子：
5.6
通讯作者：
Tichý A
中科院分区：
文献类型：
--
作者：
Šalovská B;Fabrik I;Ďurišová K;Link M;Vávrová J;Řezáčová M;Tichý A
DNA damaging agents such as ionizing radiation or chemotherapy are frequently used in oncology. DNA damage response (DDR)—triggered by radiation-induced double strand breaks—is orchestrated mainly by three Phosphatidylinositol 3-kinase-related kinases (PIKKs): Ataxia teleangiectasia mutated (ATM), DNA-dependent protein kinase (DNA-PK) and ATM and Rad3-related kinase (ATR). Their activation promotes cell-cycle arrest and facilitates DNA damage repair, resulting in radioresistance. Recently developed specific ATR inhibitor, VE-821 (3-amino-6-(4-(methylsulfonyl)phenyl)-N-phenylpyrazine-2-carboxamide), has been reported to have a significant radio- and chemo-sensitizing effect delimited to cancer cells (largely p53-deficient) without affecting normal cells. In this study, we employed SILAC-based quantitative phosphoproteomics to describe the mechanism of the radiosensitizing effect of VE-821 in human promyelocytic leukemic cells HL-60 (p53-negative). Hydrophilic interaction liquid chromatography (HILIC)-prefractionation with TiO2-enrichment and nano-liquid chromatography—tandem mass spectrometry (LC-MS/MS) analysis revealed 9834 phosphorylation sites. Proteins with differentially up-/down-regulated phosphorylation were mostly localized in the nucleus and were involved in cellular processes such as DDR, all phases of the cell cycle, and cell division. Moreover, sequence motif analysis revealed significant changes in the activities of kinases involved in these processes. Taken together, our data indicates that ATR kinase has multiple roles in response to DNA damage throughout the cell cycle and that its inhibitor VE-821 is a potent radiosensitizing agent for p53-negative HL-60 cells.
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DOI：
10.1007/978-1-62703-450-0_14
发表时间：
2013-01-01
期刊：
Methods in molecular biology (Clifton, N.J.)
影响因子：
--
作者：
Croft, David
通讯作者：
Croft, David
防止胚胎干细胞 SILAC 实验中的氨基酸转换
影响因子：
7
作者：
Bendall, Sean C.;Hughes, Chris;Lajoie, Gilles A.
通讯作者：
Lajoie, Gilles A.
影响因子：
7
作者：
Larsen, MR;Thingholm, TE;Jorgensen, TJD
通讯作者：
Jorgensen, TJD
影响因子：
4.4
作者：
Cox, Juergen;Neuhauser, Nadin;Mann, Matthias
通讯作者：
Mann, Matthias
影响因子：
14.9
作者：
Franceschini A;Szklarczyk D;Frankild S;Kuhn M;Simonovic M;Roth A;Lin J;Minguez P;Bork P;von Mering C;Jensen LJ
通讯作者：
Jensen LJ