CARM1 is a protein arginine methyltransferase and acts as a transcriptional coactivator regulating multiple biological processes. Aberrant expression of CARM1 has been related to the progression of multiple types of cancers, and therefore CARM1 was considered as a promising drug target. In the present work, we report the structure-based discovery of a series of N¹-(3-(pyrimidin-2-yl)benzyl)ethane-1,2-diamines as potent CARM1 inhibitors, in which compound 43 displays high potency and selectivity. With the advantage of excellent tissue distribution, compound 43 demonstrated good in vivo efficacy for solid tumors. Furthermore, from the detailed immuno-oncology study with MC38 C57BL/6J xenograft model, we confirmed that this chemical probe 43 has profound effects in tumor immunity, which paves the way for future studies on the modulation of arginine post-translational modification that could be utilized in solid tumor treatment and cancer immunotherapy.

中文翻译：

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基于结构发现用于实体瘤和癌症免疫学治疗的有效 CARM1 抑制剂

CARM1 是一种蛋白质精氨酸甲基转移酶，可作为调节多个生物过程的转录共激活因子。CARM1的异常表达与多种癌症的进展有关，因此CARM1被认为是一种有前途的药物靶点。在目前的工作中，我们报告了一系列N ¹ -(3-(pyrimidin-2-yl)benzyl)ethane-1,2-diamines 作为有效 CARM1 抑制剂的基于结构的发现，其中化合物43显示出高效力和选择性。凭借出色的组织分布优势，化合物43对实体瘤表现出良好的体内疗效。此外，通过对 MC38 C57BL/6J 异种移植模型的详细免疫肿瘤学研究，我们证实了这种化学探针43对肿瘤免疫具有深远的影响，这为未来研究可用于实体瘤治疗和癌症免疫治疗的精氨酸翻译后修饰的调节铺平了道路。