parp 9

PARP1-IN-9 (Compound 5c) is a potent PARP1 inhibitor, displaying an IC 50 of 30.51 nM. With its ability to induce cell apoptosis and exhibit anticancer activity, PARP1-IN-9 surpasses Olaparib in terms of efficacy [1].

CDK9 PARP-IN-1 (compound 37) 是一种CDK9 PARP的抑制剂，其抑制CDK9和PARP1的IC50分别为118 nM和107 nM。该化合物在多种癌细胞系中展现了广谱的抗增殖效应。

ExcisaninA may be a potent inhibitor of AKT signaling pathway in tumor cells, it can inhibit invasion by suppressing MMP-2 and MMP-9 expression, it may be a potential anti-metastatic chemotherapeutic agent for the treatment of breast cancer. Excisanin A shows comparable inhibitory effects on the LPS-induced production of NO and PGE2, and activation of NF-kappaB without affecting cell viability.Excisanin A induces apoptosis in colon cancer cell line SW620 as determined by Annexin V staining, the cleavage of caspase-3 and the proteolytic degradation of poly (ADP-ribose) polymerase (PARP).

BRC4wt是一种从人类BRCA2的BRC4重复区(1521-1536)衍生而来的乙酰化肽，并且是BRCA2与RAD51之间的蛋白质-蛋白质相互作用的抑制剂。当与阳离子穿膜肽(Arg)9结合时，BRC4wt缩短了体外DNA复制轨迹长度，并降低了由DNA拓扑异构酶I抑制剂坎普特西汀引起的DNA损伤的同源修复频率，同时也增强了聚(ADP-核糖)聚合酶(PARP)抑制剂奥拉帕尼在HeLa人类宫颈癌细胞和U2OS人类骨肉瘤细胞中诱导的细胞死亡，但在非癌症细胞hTERT RPE-1、MRC-5或MCF-10A中则不然。

Lucidenic acid B (Lucidenicacid B) 是从灵芝中提取得到的天然化合物，可诱导caspase-9 和 caspase-3 的活化和 PARP 的裂解，可通过线粒体介导诱导人白血病细胞凋亡 。 Lucidenic acid B通过灭活MAPK ERK信号转导途径和降低NF-kappaB和AP-1的结合活性来抑制PMA诱导的人肝癌细胞侵袭。。Lucidenic acid B 对细胞周期和坏死细胞没有影响。

DAT-230 is a promising microtubule inhibitor that has great potential for the treatment of fibrosarcoma in vitro and in vivo. DAT-230 exhibited potent anti-proliferative activity against various cancer cells. DAT-230 -treatment in HT-1080 cells resulted in microtubule de-polymerization and G2 M phase arrest preceding apoptosis. Phosphor-cdc2 (thr14 tyr15) reduction, cyclin B1 accumulation and aberrant spindles denoted the cyclin B1-cdc2 complex active and M phase arrest in HT-1080 cells treated with DAT-230. Apoptosis induced by DAT-230 was related with the activation of caspase-9, caspase-3 and PARP cleavage, which were at the downstream of mitochondria.

MAPK-IN-3 (Compound 4a) 是一种抗增殖剂，特别对 KYSE 30、HCT 116 和 HGC 27 具有强效抑制作用，其 IC50 分别为 0.57 μM、3.27 μM 和 2.28 μM。通过 p53 依赖机制，MAPK-IN-3 阻滞细胞周期，并通过 p53 非依赖机制诱导细胞凋亡。该化合物下调细胞周期相关蛋白（如 Cyclin D1 和 Cyclin B1）的表达，上调促凋亡蛋白（如裂解 PARP、裂解 caspase-7 和裂解 caspase-9）的表达，减少抗凋亡蛋白（如 Bcl-2）的表达，增加 KYSE 30 细胞内的 ROS 水平，并上调与 ROS 相关的 MAPK 信号通路成员（如 p-ERK、p-p38 和 p-JNK）的表达。

MPT0B206 is a novel tubulin polymerization inhibitor. MPT0B206 induced G2/M cell cycle arrest and the appearance of the mitotic marker MPM-2 in K562 and K562R cells, which is associated with the upregulation of cyclin B1 and the dephosphorylation of Cdc2.

CGP74514A is a CDK1 inhibitor with potential anticancer activity. In U937 cells, CGP74514A - induced apoptosis (5 microM) became apparent within 4 hr and approached 100% by 24 hr. The pan- caspase inhibitor Boc-fmk and the caspase-8 inhibitor lETD-fmk opposed CGP74514A -induced caspase-9 activation and PARP degradation, but not cytochrome c or Smac DIABLO release. CGP74514A -mediated apoptosis was substantially blocked by ectopic expression of full-length Bel- 2, a loop-deleted mutant Bcl-2, and Bcl-x(L). CGP74514A treatment (5 microM; 18 hr) resulted in increased p21(CIP1) expression, p27(KIP1) degradation, diminished E2F1 expression, and dephosphorylation of p34(CDC2). It also induced early (i.e., within 2 hr) inhibition of CDK1 activity and dephosphorylation of pRb, followed by pRb degradation, but did not block pRb phosphorylation at CDK2- and CDK4- specific sites. These findings indicate that the selective CDK1 inhibitor, CGP74514A , induces complex changes in cell cycle......

6-Methoxypurine-9-β-D-5’(R)-C-methylriboside 是一种嘌呤碱基，属于次黄嘌呤似物，主要在肌肉组织中发现。作为黄嘌呤在嘌呤氧化酶作用下的代谢产物，次黄嘌呤具备显著的抗炎性质，并可作为内源性 poly(ADP-ribose) polymerase (PARP) 的抑制剂。其通过抑制 PARP 活性，防止过氧亚硝酸盐引起的线粒体去极化及次级超氧化物的产生，展现出细胞保护作用。同时，次黄嘌呤也被用作缺氧的生物标志物。

5,7-Dihydroxychromone (5,7-Dihydroxy-4H-Chromen-4-One) 是一种Cudrania tricuspidata 的提取物，通过激活 Nrf2 ARE 信号对 6-OHDA 诱导的氧化应激和细胞凋亡发挥神经保护作用。它抑制 6-OHDA 诱导的 SH-SY5Y 细胞中活化的caspase-3，caspase-9以及切割的PARP 表达。

Aviculin 是一种木聚糖苷，是一种有效的抗癌剂 (anticanceragent)。Aviculin 可降低 MCF-7 细胞代谢活性到 50% 以下，IC50为 75.47 μM。Aviculin 通过内在凋亡途径诱导乳腺癌细胞凋亡 (apoptosis)。Aviculin 增加了 caspase-9、caspase-7和 PARP 的表达。Aviculin 使 Bax Bcl-2 的比值升高。

Paris saponin VII (Dioscini) 是从延龄草的根和根茎中分离的一种甾体皂苷。它减弱线粒体膜电位，增加凋亡相关蛋白的表达，并降低Bcl-2、caspase-9、caspase-3、PARP-1和p-Akt 的蛋白表达水平。它在 K562 ADR 细胞中诱导强烈的自噬，可研究白血病。