TRIM24 (tripartite motif-containing protein 24) and BRPF1 (bromodomain and PHD finger containing protein 1) are epigenetics “readers” and potential therapeutic targets for cancer and other diseases. Here we describe the structure-guided design of 1-(indolin-1-yl)ethan-1-ones as novel TRIM24/BRPF1 bromodomain inhibitors. The representative compound 20l (Y08624) is a new TRIM24/BRPF1 dual inhibitor, with IC₅₀ values of 0.98 and 1.16 μM, respectively. Cellular activity of 20l was validated by viability assay in prostate cancer (PC) cell lines. In PC xenograft models, 20l suppressed tumor growth (50 mg/kg/day, TGI = 53%) without exhibiting noticeable toxicity. Compound 20l represents a versatile starting point for the development of more potent TRIM24/BRPF1 inhibitors.

TRIM24（含三部分基序的蛋白质 24）和 BRPF1（含溴结构域和 PHD 指的蛋白质 1）是表观遗传学“阅读器”，也是癌症和其他疾病的潜在治疗靶点。在这里，我们描述了 1-(indolin-1-yl)ethan-1-ones 作为新型 TRIM24/BRPF1 溴结构域抑制剂的结构引导设计。代表性化合物20l (Y08624) 是一种新型 TRIM24/ BRPF1双重抑制剂，IC ₅₀值分别为 0.98 和 1.16  μM。20l的细胞活性通过在前列腺癌 (PC) 细胞系中的活力测定来验证。在 PC 异种移植模型中，20l抑制了肿瘤生长（50 mg/kg/天，TGI = 53%）而没有表现出明显的毒性。复合20l代表了开发更有效的 TRIM24/BRPF1 抑制剂的通用起点。