Introduction:In efforts to develop new antitubercular (anti-TB) compounds, herein we describe cytotoxic evaluation of 15 newly synthesized pyrrolyl pyrazoline carbaldehydes.
Method & Materials:Surflex-Docking method was used to study binding modes of the compounds at the active site of the enzyme enoyl ACP reductase fromMycobacterium tuberculosis (M. tuberculosis), which plays an important role in FAS-II biosynthetic pathway ofM. tuberculosisand also it is an important target for designing novel anti-TB agents.
Results:Among the synthesized compounds, compounds4gand4ishowed H-bonding interactions with MET98, TYR158 and co-factor NAD+, all of which fitted well within the binding pocket of InhA. Also, these compounds have shown the same type of interaction as that of 4TZK ligand. The compounds were further evaluated for preliminary anti-TB activities againstM. tuberculosisH37Rv strain.
Conclusion:Some compounds were also screened for their mammalian cell toxicity using human lung cancer cell-line (A549) that was found to be nontoxic.
介绍:
在开发新的抗结核病(抗TB)化合物的努力中,我们描述了15种新合成的吡咯基吡唑啉羰基醛的细胞毒性评价。
方法与材料:
使用Surflex-Docking方法研究这些化合物在结核分枝杆菌(M. tuberculosis)的酶烯酰ACP还原酶的活性位点上的结合模式。该酶在M. tuberculosis的FAS-II生物合成途径中起重要作用,并且是设计新型抗TB药物的重要靶点。
结果:
在合成的化合物中,化合物4g和4i与MET98、TYR158和辅因子NAD+发生氢键相互作用,所有这些都很好地适应于InhA的结合口袋。此外,这些化合物显示了与4TZK配体相同类型的相互作用。进一步评估了这些化合物对M. tuberculosis H37Rv菌株的初步抗TB活性。
结论:
还对一些化合物进行了对哺乳动物细胞毒性的筛选,使用人类肺癌细胞系(A549),结果表明这些化合物对细胞是无毒的。