SCR7 pyrazine 是一种 DNA 连接酶 IV (DNA ligase IV) 抑制剂，它以连接酶 IV 依赖的方式阻断非同源末端连接 (NHEJ)。SCR7 pyrazine 也是一种 CRISPR/Cas9 的增强子，可提高 Cas9 介导的同源性定向修复 (HDR) 的效率。SCR7 pyrazine 诱导细胞凋亡 (apoptosis) 并具有抗癌活性。
SCR7 pyrazine (20-100 μM; 24 hours; MCF7 cells) treatment interferes with NHEJ in cells, leading to accumulation of unrepaired double-strand breaks (DSBs).
SCR7 pyrazine treatment shows a dose-dependent decrease in cell proliferation with IC
50
values of 40 μM, 34 μM, 44 μM, 8.5 μM, 120 μM, 10 μM and 50 μM for MCF7, A549, HeLa, T47D, A2780, HT1080 and Nalm6 cells, respectively.
In MCF7 cells, SCR7 pyrazine (20, 40 μM) treatment increases phosphorylation of ATM and activates p53, decreases MDM2, BCL2, resulting in activation of proapoptotic proteins, PUMA and BAX. And the shorter fragments of MCL1, PARP1, Caspase 3, and Caspase 9 cleavage are upregulated in a dose-dependent manner.
Western Blot Analysis
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Cell Line:
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MCF7 cells
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Concentration:
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20 μM, 40 μM, 100 μM
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Incubation Time:
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24 hours
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Result:
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Showed an increase in levels of gH2AX foci and protein.
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