ML141是Rho家族GTPase cdc42的一种有效的、选择性可逆非竞争性抑制剂,IC50为200 nM。与p38激活增加有关,并可能诱导p38依赖性凋亡/衰老。此外,ML141对cdc42比对其他Rho家族中的GTPases(如Rac1、Rab2、Rab7)更有选择性。
体外研究ML141通过诱导细胞死亡和抑制细胞分裂,增强TMX抑制BLBC细胞生长的能力。此外,ML141显著保护神经母细胞瘤细胞免受二甲双胍诱导的凋亡损害,并剂量依赖性减少肺炎克雷伯菌入侵。
体内研究在负荷MDA-MB 231源肿瘤的NOD/SCID小鼠中,ML141(1 mg/day腹腔注射)通过抑制Cdc42,使TMX能够抑制MDA-MB 231衍生的肿瘤生长。此外,在小鼠体内,ML141(10 mg/kg腹腔注射)增强G-CSF诱导的造血干细胞和祖细胞动员。
靶点Target | Value |
---|---|
cdc42 | 200 nM |
Two series of sulfonamides were synthesized from 4-hydrazinylbenzenesulfonamide as the key starting material. 1,3,5-Triarylpyrazoline sulfonamides (2a?i) were obtained by cyclocondensation of various chalcones in 53? ?64 % yields, while 4-thiazolidinone derivatives (4a?e) were synthesized by cyclocondensation between mercaptoacetic acid and different phenylhydrazones in 43?62 % yields. The synthesized compounds were characterized based on FTIR, 1H-NMR, 13C-NMR and HRMS data. The sulfonamides were evaluated for their in vitro antimicrobial activities against four bacterial strains (E. coli, P. aeruginosa, B. subtillis and S aureus), two filamentous fungal strains (A. niger and F. oxysporum) and two yeast strains (C. albicans and S. cerevisiae). Seven pyrazolines, 2a?c and 2e?h, exhibited significant inhibition of different microbial strains. Among them, compound 2b displayed good antifungal activity against A. niger (MIC value at 12.5 ?g mL-1) over the reference drug.