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β-Carboline Derivatives Tackling Malaria: Biological Evaluation and Docking Analysis.
ACS Omega ( IF 3.7 ) Pub Date : 2020-07-13 , DOI: 10.1021/acsomega.0c01256
Varun Gorki 1 , Neha Sylvia Walter 1 , Rahul Singh 2 , Monika Chauhan 3 , Neelima Dhingra 3 , Deepak B Salunke 2 , Sukhbir Kaur 1
Affiliation  

Increasing resistance to presently available antimalarial drugs urges the need to look for new promising compounds. The β-carboline moiety, present in several biologically active natural products and drugs, is an important scaffold for antimalarial drug discovery. The present study explores the antimalarial activity of a β-carboline derivative (1R,3S)-methyl 1-(benzo[d][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole-3-carboxylate (9a) alone in vitro against Plasmodium falciparum and in vivo in combination therapy with the standard drug artesunate against Plasmodium berghei. Compound 9a inhibited both 3D7 and RKL-9 strains of P. falciparum with half-maximal inhibitory concentration (IC50) < 1 μg/mL, respectively. The compound was nontoxic (50% cytotoxic concentration (CC50) > 640 μg/mL) to normal dermal fibroblasts. Selectivity index was >10 against both the strains. The compound exhibited considerable in vivo antimalarial activity (median effective dose (ED50) = 27.74 mg/kg) in monotherapy. The combination of 9a (100 mg/kg) and artesunate (50 mg/kg) resulted in 99.69% chemosuppression on day 5 along with a mean survival time of 25.8 ± 4.91 days with complete parasite clearance. Biochemical studies indicated the safety of the HIT compound to hepatic and renal functions of mice. Molecular docking also highlighted the suitability of 9a as a potential antimalarial candidate.

中文翻译:


β-咔啉衍生物对抗疟疾:生物学评价和对接分析。



对目前可用的抗疟药物的耐药性不断增加,迫切需要寻找新的有前途的化合物。 β-咔啉部分存在于多种生物活性天然产物和药物中,是抗疟药物发现的重要支架。本研究探讨了 β-咔啉衍生物 (1 R ,3 S )-methyl 1-(苯并[ d ][1,3]dioxol-5-yl)-2,3,4,9-tetrahydro 的抗疟活性-1 H-吡啶并[3,4- b ]吲哚-3-羧酸酯 ( 9a ) 单独在体外对抗恶性疟原虫在体内与标准药物青蒿琥酯联合治疗对抗伯氏疟原虫。化合物9a分别抑制恶性疟原虫的3D7和RKL-9菌株,半数最大抑制浓度(IC 50 )<1μg/mL。该化合物对正常真皮成纤维细胞无毒(50%细胞毒性浓度(CC 50 )> 640 μg/mL)。针对这两种菌株的选择性指数均>10。该化合物在单一疗法中表现出相当大的体内抗疟活性(中位有效剂量(ED 50 )= 27.74 mg/kg)。 9a (100 mg/kg) 和青蒿琥酯 (50 mg/kg) 的组合在第 5 天产生 99.69% 的化疗抑制率,平均存活时间为 25.8 ± 4.91 天,寄生虫完全清除。生化研究表明 HIT 化合物对小鼠肝肾功能的安全性。分子对接还强调了9a作为潜在抗疟候选药物的适用性。
更新日期:2020-07-28
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