DC Chemicals Supply: VE-822, Cas: 1232416-25-9 ,Cat No. DC7527, Purity>98%, In stock.
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VE-822|cas 1232416-25-9, Synonym name: VE822; VE 822, Chemical name: 2-Pyrazinamine, 3-[3-[4-[(methylamino)methyl]phenyl]-5-isoxazolyl]-5-[4-[(1-methylethyl)sulfonyl]phenyl]-, Molecule weight: 463.55, Molecule Formula: C24H25N5O3S
VE-822 is a selective ATR inhibitor with an Ki value of 0.2 nM, >150 fold selectivity over ATM (Ki=34 nM), DNA-PK (Ki >4 uM) and mTOR (Ki >1 uM).
VE-822 (80 nM) attenuates ATR signaling pathway and reduces survival in tumor cells in response to XRT and gemcitabine. VE-822 (80 nM) attenuates ATR signaling in normal cells without enhancing radiation and gemcitabine killing in normal cells. VE-822 (80 nM) increases XRT-induced residual γH2AX and 53BP1 foci compared with XRT in MiaPaCa-2 and PSN-1 cells. VE-822 (80 nM) pre-treatment decreases Rad51 foci after XRT in MiaPaCa-2 and PSN-1 cells. VE-822 (80 nM) alone increases the G1-phase-fraction in MiaPaCa-2 and PSN-1 cells. VE-822 (80 nM) abrogates XRT enriched G2/M-phase-fraction in MiaPaCa-2 and PSN-1 cells. VE-822 has little effect alone, while VE-822 (80 nM) combined with XRT and/or gemcitabine enhances early and late apoptosis in PSN-1 cells that is strongest in the triple combination. [1] VE-822 increases tumor response to DNA damaging agents associated with blockade of pChk1 Ser345. [2] VE-822 (60 mg/kg) inhibits phospho-Ser-345-Chk1 in mice bearing PSN-1 tumors after DNA-damaging agents. VE-822 (60 mg/kg) combined with XTR doubles the time for tumors to grow to 600 mm3 of XRT alone in mice bearing both PSN-1 and MiaPaCa-2 tumors. VE-822 (60 mg/kg) added to the combination of gemcitabine and XRT substantially prolongs the tumor growth delay compared with the Gem+XRT1 group n mice bearing both PSN-1 tumors. VE-822 (60 mg/kg) combined with XRT1 increases uptake in tumors by 44% compared with XRT1, suggesting that addition of VE-822 increased γH2AX phosphorylation and persistence of DNA damage caused by XRT. [1]
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