Discovery of berberine analogs as potent and highly selective p300/CBP HAT inhibitors
作者:Xue Zhong、Huiwen Deng、Min Long、Honglu Yin、Qiu Zhong、Shilong Zheng、Tao Gong、Ling He、Guangdi Wang、Qiu Sun
DOI:10.1016/j.bioorg.2023.106597
日期:2023.9
many human pathological conditions. To find effective p300/CBP HAT inhibitors, we screened an internal compound library and identified berberine as a lead compound. Next, we designed, synthesized, and screened a series of novel berberine analogs, and discovered that analog 5d was a potent and highly selective p300/CBP HAT inhibitor with IC50 values of 0.070 μM and 1.755 μM for p300 and CBP, respectively
p300 蛋白是癌症进展的正调节因子,与许多人类病理状况有关。为了找到有效的 p300/CBP HAT 抑制剂,我们筛选了内部化合物库并确定小檗碱作为先导化合物。接下来,我们设计、合成和筛选了一系列新型小檗碱类似物,发现类似物5d是一种有效的、高选择性的p300/CBP HAT抑制剂,对p300和CBP的IC 50值分别为0.070 μM和1.755 μM。 Western blotting进一步证明5d特异性降低H3K18Ac并干扰组蛋白乙酰转移酶的功能。虽然5d对MDA-MB-231细胞系只有中等抑制作用,但5d抑制了小鼠4T1肿瘤的生长,肿瘤重量抑制比(TWI)为39.7%。此外,脂质体封装5d将其对肿瘤生长的抑制增加至 57.8% TWI。此外, 5d对小鼠主要器官无明显毒性,药代动力学研究证实5d在体内具有良好的吸收特性。