BI 2536, dual Polo-like kinase (PLK)/bromodomain inhibitors, effectively reactivate latent HIV-1. Half maximal inhibitory concentration (IC50) values of BI 2536 against PLK1, PLK2, and PLK3 in cell-free kinase assays are 0.83nM, 3.5nM and 9.0nM, respectively[1].
In vitro, BI 2536 (0.1, 0.5, 1 and 2μM; 72h) inhibited the proliferation of ovarian cancer cells and induced cell cycle arrest at the G2/M phases[2]. BI 2536 (28.23 and 17.30nM; 24 and 48h) promotes neuroblastoma cell death via minichromosome maintenance complex components 2 and 10[3]. Alisertib cooperates with BI 2536 (14h and 24h) to induce cell cycle arrest and DNA double-strand breaks in small cell lung cancer[4]. BI 2536 (5nM and 10nM; 24h) induces apoptosis and attenuates the autophagic process in neuroblastoma cells[5].
In vivo, BI 2536 (10mg/kg/every other day; 20 days; i.p.) inhibited tumor growth in the cell-derived xenograft model mice[2]. Combining BI 2536 (10mg/kg; every other day for a total of five doses; i.v.) with alisertib impaired DNA repair capacity and significantly delayed tumor growth in mice[4].
References:
[1] Gohda J, Suzuki K, Liu K, et al. BI-2536 and BI-6727, dual Polo-like kinase/bromodomain inhibitors, effectively reactivate latent HIV-1. Sci Rep. 2018 Feb 23;8(1):3521.
[2] Huo J, Shen Y, Zhang Y, et al. BI 2536 induces gasdermin E-dependent pyroptosis in ovarian cancer. Front Oncol. 2022 Aug 9;12:963928.
[3] Hsieh CH, Yeh HN, Huang CT, et al. BI-2536 Promotes Neuroblastoma Cell Death via Minichromosome Maintenance Complex Components 2 and 10. Pharmaceuticals (Basel). 2021 Dec 28;15(1):37.
[4] Zhang J, Liu X, Hou P, et al. BRCA1 orchestrates the response to BI-2536 and its combination with alisertib in MYC-driven small cell lung cancer. Cell Death Dis. 2024 Jul 31;15(7):551.
[5] Li Z, Yang C, Li X, et al. The dual role of BI 2536, a small-molecule inhibitor that targets PLK1, in induction of apoptosis and attenuation of autophagy in neuroblastoma cells. J Cancer. 2020 Mar 5;11(11):3274-3287.
BI 2536是一种双重Polo样激酶(PLK)/溴结构域抑制剂,在无细胞激酶实验中,BI 2536 对PLK1、PLK2和PLK3的半数抑制浓度(IC50)值分别为0.83nM、3.5nM和9.0nM[1]。
在体外实验中,BI 2536(0.1, 0.5, 1和2μM; 72小时)抑制了卵巢癌细胞的增殖,并诱导细胞周期停滞在G2/M期[2]。BI-2536(28.23和17.30nM; 24和48小时)通过微染色体维持复合体组分2和10促进神经母细胞瘤细胞死亡[3]。阿利塞替布与BI 2536(14小时和24小时)协同作用,诱导小细胞肺癌细胞周期停滞和DNA双链断裂[4]。BI 2536(5nM和10nM; 24小时)诱导神经母细胞瘤细胞凋亡并减弱自噬过程[5]。
体内实验方面,BI 2536(10mg/kg/每隔一天; 20天; 腹腔注射)抑制了细胞来源的异种移植模型小鼠中的肿瘤生长[2]。将BI 2536(10mg/kg/每隔一天; 给药5次; 静脉注射)与阿利塞替布联合使用,可损害DNA修复能力,并显著延缓小鼠中肿瘤的生长[4]。
















