ARV-771, a pan-BET-PROTAC, potently degrades BRD2/3/4 with a DC50<5nM[1]. ARV-771, which consists of a BRD4 inhibitor (JQ1) and a ligand for Von Hippel-Lindau (VHL) E3 ligase, kills cancer cells by degrading bromodomain and BET proteins overexpressed in cancer cells [2]. ARV-771 has been widely used to inhibit tumor growth in MYC/ BCL2-associated lymphoma models[3].
In vitro, ARV-771 treatment for 96 hours significantly inhibited the viability of MDA-MB-231 and MDA-MB-436 cells with IC50 values of 0.12±0.04µM and 0.45±0.02µM, respectively[4]. Treatment of HepG2 and HCCLM3 cells with 2µM ARV-771 for 24 hours significantly inhibited cell growth, blocked cell cycle progression, and reduced the expression of multiple deubiquitinating enzymes[5]. ARV-771 treatment for 48h significantly induced apoptosis in Mino cells with an IC50 value of 17±7nM[6].
In vivo, ARV-771 treatment via subcutaneous administration daily at a dose of 30mg/kg for 21 days induced tumor regression in noncastrated male Nu/Nu mice bearing 22Rv1 tumors[7]. Treatment with ARV-771 (30mg/kg subcutaneously once daily for 5 days per week) combined with BC2059 (30mg/kg intraperitoneally twice weekly) for 3 weeks significantly reduced secondary acute myelocytic leukemia (AML) tumor burden and improved survival in NSG mice bearing HEL-P/R cells[8].
References:
[1] Yedla P, Babalghith A O, Andra V V, et al. PROTACs in the management of prostate cancer[J]. Molecules, 2023, 28(9): 3698.
[2] Cho H, Jeon S I, Shim M K, et al. In situ albumin-binding and esterase-specifically cleaved BRD4-degrading PROTAC for targeted cancer therapy[J]. Biomaterials, 2023, 295: 122038.
[3] Furukawa K, Shimada K, Esaki M, et al. Development and efficacy of a Novel Bromodomain and Extraterminal Domain Degrader K-256 in MYC/BCL2-Related lymphoma[J]. Blood, 2023, 142: 5008.
[4] Teufelsbauer M, Stickler S, Eggerstorfer M T, et al. BET-directed PROTACs in triple negative breast cancer cell lines MDA-MB-231 and MDA-MB-436[J]. Breast Cancer Research and Treatment, 2024, 208(1): 89-101.
[5] Deng Y, Yu C, Chen L, et al. ARV-771 acts as an inducer of cell cycle arrest and apoptosis to suppress hepatocellular carcinoma progression[J]. Frontiers in Pharmacology, 2022, 13: 858901.
[6] Sun B, Fiskus W, Qian Y, et al. BET protein proteolysis targeting chimera (PROTAC) exerts potent lethal activity against mantle cell lymphoma cells[J]. Leukemia, 2018, 32(2): 343-352.
[7] Raina K, Lu J, Qian Y, et al. PROTAC-induced BET protein degradation as a therapy for castration-resistant prostate cancer[J]. Proceedings of the National Academy of Sciences, 2016, 113(26): 7124-7129.
[8] Saenz D T, Fiskus W C, Manshouri T, et al. BRD4 degrader and inhibitor of beta catenin-TCF7L2 are synergistically active against human AML cells resistant to BET inhibitor[J]. Cancer Research, 2019, 79(13_Supplement): 3036-3036.
ARV-771是一种泛BET-PROTAC,能有效降解BRD2/3/4蛋白,DC50值低于5nM[1]。ARV-771由BRD4抑制剂和VHL E3连接酶配体构成,通过降解癌细胞中过表达的溴结构域和BET蛋白发挥抗肿瘤作用[2]。ARV-771已广泛应用于MYC/BCL2相关淋巴瘤模型的肿瘤生长抑制研究[3]。
在体外,ARV-771处理96小时可显著抑制MDA-MB-231和MDA-MB-436细胞活力,IC50值分别为0.12±0.04µM和0.45±0.02µM [4]。使用2µM的ARV-771处理HepG2和HCCLM3细胞24小时,能显著抑制细胞生长、阻滞细胞周期进程并降低多种去泛素化酶表达[5]。ARV-771处理48小时可显著诱导Mino细胞凋亡,IC50值为17±7nM[6]。
在体内,每日皮下注射30mg/kg剂量的ARV-771连续21天,能引起携带22Rv1肿瘤的非去势雄性Nu/Nu小鼠肿瘤消退[7]。采用ARV-771(30mg/kg;每周5次皮下注射)联合BC2059(30mg/kg;每周两次腹腔注射)治疗3周,可显著减轻携带HEL-P/R细胞的NSG小鼠的继发性急性髓细胞白血病(AML)肿瘤负荷,并提高小鼠生存率[8]。
















