产品描述: Niraparib tosylate (MK-4827, ZEJULA) 是PARP1/PARP2的选择性抑制剂,IC50分别为3.8 nM和2.1 nM。Niraparib可增加PARP-DNA复合体的形成,并导致DNA损伤、凋亡和细胞死亡 |
靶点:
PARP2(Cell-free assay):2.1 nM; PARP1(Cell-free assay):3.8 nM;Apoptosis; PARP |
体外研究:
微摩尔级浓度的niraparib使来自于肺癌、乳腺癌以及前列腺癌的肿瘤细胞对放射线敏感(不依赖于它们的p53状态),而对来自于正常组织的细胞没有此作用。Niraparib同样还可以使肿瘤细胞对过氧化氢敏感、在DNA复制时,将过氧化氢诱导的单链断裂转变为双链断裂 |
体内研究:
MK-4827可以增强放射线对多种人类肿瘤异种移植的作用,无论是在p53野生型或是p53突变体。MK-4827在给药后1小时降低肿瘤中PAR水平并持续效果24小时。MK-4827体内给药能延长放射线处理后的动物寿命。MK-4827和放射治疗结合,显著提高肿瘤中裂解的caspase-3和γ-H2AX的水平 |
细胞实验:
Cell lines: V-C8细胞 Concentrations: 50 nM Incubation Time: 24 h Method: 用PARP抑制剂MK-4827对中国仓鼠细胞V-C8(BRCA2-negative)进行处理,24小时后,洗涤并将细胞孵育在不含此化合物的培养基中5-7天,直到形成克隆 |
动物实验:
Animal Models: 雌性裸鼠(Ncr Nu/Nu) Dosages: 25或50 mg/kg Administration: 口服 |
参考文献:
1. Wang L, et al. MK-4827, a PARP-1/-2 inhibitor, strongly enhances response of human lung and breast cancer xenografts to radiation. Invest New Drugs. 2012, 30(6):2113-20. 2. Patel AG, et al. Enhanced killing of cancer cells by poly(ADP-ribose) polymerase inhibitors and topoisomerase I inhibitors reflects poisoning of both enzymes. J Biol Chem. 2012, 287(6):4198-210. 3. Jones P, et al. Discovery of 2-{4-[(3S)-piperidin-3-yl]phenyl}-2H-indazole-7-carboxamide (MK-4827): a novel oral poly(ADP-ribose)polymerase (PARP) inhibitor efficacious in BRCA-1 and -2 mutant tumors. J Med Chem. 2009, 52(22):7170-85. 4. Mueller S, et al. Poly (ADP-Ribose) polymerase inhibitor MK-4827 together with radiation as a novel therapy for metastatic neuroblastoma. Anticancer Res. 2013, 33(3):755-62. 5. Bridges KA, et al. Niraparib (MK-4827), a novel poly(ADP-Ribose) polymerase inhibitor, radiosensitizes human lung and breast cancer cells. oncotarget. 2014, 5(13):5076-86. |
溶解性:
soluble in DMSO |
保存条件:
-20℃ |
配置溶液浓度参考:
|
1mg |
5mg |
10mg |
1 mM |
2.03 ml |
10.15 ml |
20.301 ml |
5 mM |
0.406 ml |
2.03 ml |
4.06 ml |
10 mM |
0.203 ml |
1.015 ml |
2.03 ml |
50 mM |
0.041 ml |
0.203 ml |
0.406 ml |
|
注意: |
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