Synthesis and Biological Evaluation of Novel Thiazol-2yl-amine Derivatives as Potential Anticancer Agents
作者:Chaithanya Somu、Mahesh Hegde、Kothanahally S. Sharath Kumar、Ananda Hanumappa、Mrinal Srivastava、Kachigere B. Harsha、Chakrabhavi D. Mohan、Kavya Ananthaswamy、Basappa、Sathees C. Raghavan、Kanchugarakoppal S. Rangappa
DOI:10.2174/1570178614666170907122026
日期:2018.3.9
Background: Chronic myelogenous leukemia (CML) is a myeloproliferative neoplasm that
can occur in any age group but often seen in adults and contributing for about 20% of adult leukemias
and it may contribute up to 15% of all types of leukemias threatening the globe. Therefore, treatment of
CML remains as a major challenge in cancer therapeutics.
Methods: We synthesized a library of novel 2-amino-4-(4-substituted phenyl) thiazole derivatives and
evaluated their anti-leukemic activity by trypan blue and MTT assay. 4-(4'-phenoxybiphenyl-4-yl) thiazol-
2-amine (compound 3m) was identified as a lead anticancer agent and further, the effect of 3m on
CML cells (K562) was investigated by flow cytometry, annexin V-FITC-propidium iodide staining,
measuring the mitochondrial membrane potential (JC-1 staining) and DNA fragmentation assay.
Results: MTT and trypan blue dye exclusion assay results presented 3m as the lead anticancer agent.
Flow cytometric analysis revealed the accumulation of K562 cells in subG1phase in a time- and dosedependent
manner. Annexin-V-FITC-PI staining demonstrated the increase in percentage of apoptotic
cells on treatment with 3m. Furthermore, 3m also induced DNA fragmentation and disrupted mitochondrial
membrane potential in K562 cells in dose-dependent manner. In addition, apoptosis inducing
effect of 3m was reconfirmed by live-dead assay and confocal microscopic studies.
Conclusion: The present study suggests that compound 3m has the potential to be a promising candidate
for the treatment of CML.
背景:慢性髓性白血病(CML)是一种骨髓增生性肿瘤,可发生于任何年龄段,但常见于成人,约占成人白血病的20%,且在全球范围内所有类型的白血病中,CML可能占到15%。因此,CML的治疗仍然是癌症治疗学中的一个重大挑战。
方法:我们合成了一系列新型2-氨基-4-(4-取代苯基)噻唑衍生物,并通过台盼蓝和MTT试验评估了它们的抗白血病活性。从中识别出4-(4'-苯氧基联苯-4-基)噻唑-2-胺(化合物3m)作为潜在的抗癌药物,并进一步研究了3m对CML细胞(K562细胞)的影响,包括流式细胞术分析、Annexin V-FITC-碘化丙啶染色、线粒体膜电位检测(JC-1染色)以及DNA片段化实验。
结果:MTT和台盼蓝染色排除法测试结果显示3m具有潜在的抗癌活性。流式细胞分析显示,K562细胞在亚G1期的积累呈时间-剂量依赖性增加。Annexin V-FITC-PI染色表明,用3m处理后,凋亡细胞的比例上升。此外,3m还能剂量依赖性地诱导K562细胞的DNA片段化和破坏线粒体膜电位。同时,通过活-死细胞试验和共聚焦显微镜研究再次证实了3m的促凋亡效应。
结论:本研究表明,化合物3m具有成为治疗CML的有前景候选药物的潜力。