DMAT 是一种有效的、特异性的 CK2 抑制剂,IC50 值为 130 nM。
靶点DMAT(1 μM 至 2.5 μM)在杀死抗雌激素耐药细胞方面比母细胞系 MCF-7 更有效,而后者是对抗雌激素敏感的。DMAT 导致抗雌激素耐药细胞死亡是通过 caspases 介导的。DMAT 抑制 CK2 活性,但这种抑制在 MCF-7、TAMR-1 和 182R-6 这三种细胞系中的相似。DMAT 在 10⁻⁴ mol/L 和 10⁻⁵ mol/L 浓度下对 H295R 细胞的增殖有影响,相较于对照组而言。DMAT(100 μM)显著增加 72 小时 H295R 细胞培养物上清液中的细胞凋亡。DMAT(1 nM 至 1 μM)显著降低 72 小时 H295R 细胞培养物中醛固酮的释放,相较于对照组而言。DMAT 还以与 ATP 竞争的方式抑制 PIM1,并且是除了 CK2 外其他激酶的有效抑制剂。
体内研究DMAT 在体内的应用通过干扰肿瘤细胞增殖来减少移植瘤模型中的肿瘤生长。DMAT 给药后的生物化学参数和组织学检查显示肝脏组织未发生改变。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2,4,5,6,7-五溴-1H-苯并咪唑 | 2,4,5,6,7-pentabromo-1H-benzimidazole | 16865-25-1 | C7HBr5N2 | 512.618 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (4,5,6,7-tetrabromo-2-(dimethylamino)-1H-benzo[d]imidazol-1-yl)acetic acid | 1085822-09-8 | C11H9Br4N3O2 | 534.827 |
—— | 4-(2-dimethylamino-4,5,6,7-tetrabromobenzimidazol-1-yl)butyric acid ethyl ester | 1356340-32-3 | C15H17Br4N3O2 | 590.935 |
—— | (2-dimethylamino-4,5,6,7-tetrabromobenzoimidazol-1-yl)-acetic acid ethyl ester | 1085822-08-7 | C13H13Br4N3O2 | 562.881 |
The design of multitarget drugs (MTDs) has become an innovative approach for the search of effective treatments in complex diseases such as cancer. In this work, we communicate our efforts in the design of multi-targeting histone deacetylase (HDAC) and protein kinase CK2 inhibitors as a novel therapeutic strategy against cancer. Using tetrabromobenzotriazole (TBB) and 2-dimethylamino-4,5,6,7-tetrabromo-benzimidazole (DMAT) as scaffolds for CK2 inhibition, and a hydroxamate to coordinate the zinc atom present in the active site of HDAC (zinc binding group, ZBG), new multitarget inhibitors have been designed and synthesized. According to the in vitro assays, N-Hydroxy-6-(4,5,6,7-tetrabromo-2-(dimethylamino)-1H-benzo[d]imidazol-1-yl)hexanamide (11b) is the most interesting compound, with IC50 values of 0.66; 1.46 and 3.67 µM. for HDAC6; HDAC1 and CK2; respectively. Cellular assays on different cancer cell lines rendered promising results for N-Hydroxy-8-(4,5,6,7-tetrabromo-2-(dimethylamino)-1H-benzo[d]imidazol-1-yl)octanamide (11d). This inhibitor presented the highest cytotoxic activity, proapoptotic capability, and the best mitochondria-targeting and multidrug-circumventing properties, thus being the most promising drug candidate for further in vivo studies.