AZD-9574 is a novel, blood-brain barrier permeable PARP1 inhibitor that selectively inhibits PARP1 at single-strand break (SSB) sites[1-2]. AZD-9574 can be used in research related to breast cancer and advanced solid malignancies[3-4].
In vitro, AZD-9574 (0.1nM–40µM) was incubated with homologous recombination repair-deficient (HRD) cancer cells (such as MDA-MB-436, DLD-1 BRCA2-/-, and SKOV3 BRCA2-/- cells) for 72 hours to 13 days. AZD-9574 significantly inhibited cancer cell colony formation, increased γH2AX signaling, induced G2-M phase cell cycle arrest, and enhanced the synergistic anti-tumor effects of TMZ[5].
In vivo, AZD-9574 (3mg/kg/day) was orally administered to C57BL/6 mice bearing H3K27M diffuse midline glioma (using H3K27MPP cells) in combination with 2Gy radiotherapy (administered 1 hour before each radiation fraction, for 6 consecutive days). AZD-9574 significantly prolonged the overall survival of the mice and enhanced intratumoral NK cell infiltration and activation[6]. AZD-9574 (0.6–3mg/kg) was administered once daily by oral gavage for 7 consecutive days to mouse models bearing patient-derived (H3F3A K27M, TP53R248W, ATRX-deficient) or genetically engineered (H3F3A K27M; Trp53⁻/⁻) diffuse midline glioma orthotopic xenografts. AZD-9574 significantly extended the survival of these mice and effectively inhibited the growth and recurrence of orthotopic tumors within the mouse brain[7].
References:
[1] Johannes JW, Balazs AYS, Barratt D, et al. Discovery of 6-Fluoro-5-{4-[(5-fluoro-2-methyl-3-oxo-3,4-dihydroquinoxalin-6-yl)methyl]piperazin-1-yl}-N-methylpyridine-2-carboxamide (AZD9574): A CNS-Penetrant, PARP1-Selective Inhibitor. J Med Chem. 2024 Dec 26;67(24):21717-21728.
[2] Zhou X, Chen K. Discovery of novel radioligand [18F]AZD9574 for selective imaging of PARP1 in the CNS. Acta Pharm Sin B. 2025 Oct;15(10):5489-5490.
[3] Lynce F, Lin NU. From Serendipity to Intention: Development of Brain-Penetrant PARP1-Selective Inhibitors. Clin Cancer Res. 2024 Apr 1;30(7):1217-1219.
[4] Patel JS, Zhou X, Chen J, et al. A novel 18 F-labeled brain penetrant PET ligand for imaging poly(ADP-ribose) polymerase-1. bioRxiv. 2025 Nov 3:2025.11.01.686021.
[5] Guo Y, Li Z, Parsels LA, et al. H3K27M diffuse midline glioma is homologous recombination defective and sensitized to radiotherapy and NK cell-mediated antitumor immunity by PARP inhibition. Neuro Oncol. 2025 Sep 17;27(8):2129-2146.
[6] Staniszewska AD, Pilger D, Gill SJ, et al. Preclinical Characterization of AZD9574, a Blood-Brain Barrier Penetrant Inhibitor of PARP1. Clin Cancer Res. 2024 Apr 1;30(7):1338-1351.
[7] Chen X, Zhang S, Yang L, et al. Zeaxanthin dipalmitate-enriched wolfberry extract improves vision in a mouse model of photoreceptor degeneration. PLoS One. 2024 May 20;19(5):e0302742.
AZD-9574是一种新型的、具有血脑屏障通透性的PARP1抑制剂,AZD-9574在SSB位点选择性抑制PARP1[1-2]。AZD-9574可用于乳腺癌和晚期实体恶性肿瘤的相关研究[3-4]。
在体外,AZD-9574(0.1nM-40μM)孵育具有同源重组修复缺陷(HRD)的癌细胞(如MDA-MB-436、DLD-1 BRCA2-/-、SKOV3 BRCA2-/-细胞)72小时至13天,AZD-9574显著抑制癌细胞克隆形成、增加γH2AX信号、诱导G2-M期细胞周期阻滞,并增强TMZ的协同抗肿瘤效应[5]。
在体内,AZD-9574(3mg/kg/day)口服处理携带H3K27M弥漫性中线胶质瘤(H3K27MPP细胞)的C57BL/6小鼠(与2Gy放疗联合使用,放疗前1小时给药,持续6天),AZD-9574显著延长小鼠的总体生存期并增强瘤内NK细胞的浸润与激活[6]。AZD-9574(0.6–3mg/kg)每日一次灌胃给药,连续处理携带患者来源(H3F3A K27M, TP53R248W, ATRX缺失)或基因工程(H3F3A K27M; Trp53⁻/⁻)的弥漫性中线胶质瘤原位移植瘤小鼠模型7天,AZD-9574显著延长了小鼠的生存期,并有效抑制了小鼠大脑内原位肿瘤的生长与复发[7]。
















