Two novel piperidones induce apoptosis and antiproliferative effects on human prostate and lymphoma cancer cell lines
作者:Risa Mia Swain、Lisett Contreras、Armando Varela-Ramirez、Mohammad Hossain、Umashankar Das、Carlos A. Valenzuela、Manuel L. Penichet、Jonathan R. Dimmock、Renato J Aguilera
DOI:10.1007/s10637-022-01266-y
日期:2022.10
Cancer remains the second most common cause of death in the US. Due to a recurrent problem with anticancer drug resistance, there is a current need for anticancer drugs with distinct modes of action for combination drug therapy We have tested two novel piperidone compounds, named 2608 (1-dichloroacetyl − 3,5-bis(3,4-difluorobenzylidene)-4-piperidone) and 2610 (1-dichloroacetyl-3,5-bis(3,4-dichlorobenzylidene)-4-piperidone), for their potential cytotoxicity on numerous human cancer cell lines. We found that both compounds were cytotoxic for breast, pancreatic, leukemia, lymphoma, colon, and fibroblast cell lines, with a cytotoxic concentration 50% (CC50) in the low micromolar to nanomolar concentration range. Further assays focused primarily on an acute lymphoblastic lymphoma and colon cancer cell lines since they were the most sensitive and resistant to the experimental piperidones. The cell death mechanism was evaluated through assays commonly used to detect the induction of apoptosis. These assays revealed that both 2608 and 2610 induced reactive oxygen species (ROS) accumulation, mitochondrial depolarization, and activated caspase-3/7. Our findings suggest that the piperidones induced cell death via the intrinsic apoptotic pathway. Additional assays revealed that both piperidones cause cell cycle alteration in lymphoma and colon cell lines. Both piperidones elicited DNA fragmentation, as evidenced by an increment in the sub-G0/G1 subpopulation in both cell lines. Similar to other related compounds, both piperidones were found to act as proteasome inhibitors by increasing the levels of poly-ubiquitinated proteins in both lymphoma and colon cell lines. Hence, the two piperidones exhibited attractive cytotoxic properties and suitable mechanisms of action, which makes them good candidates as anticancer drugs.
癌症仍是美国第二大常见死因。由于抗癌药物耐药性反复出现,目前需要作用机理不同的抗癌药物进行联合用药。我们测试了两种新型哌啶酮化合物,分别是2608(1-二氯乙酰基-3,5-双(3,4-二氟苄叉)-4-哌啶酮)和2610(1-二氯乙酰基-3,5-双(3,4-二氯苄叉)-4-哌啶酮),测试它们对多种人类癌细胞系的潜在细胞毒性。我们发现这两种化合物对乳腺癌、胰腺癌、白血病、淋巴瘤、结肠癌和成纤维细胞系具有细胞毒性,细胞毒性浓度50%(CC50)在低微摩尔至纳摩尔浓度范围内。进一步的实验主要集中于急性淋巴细胞白血病和结肠癌细胞系,因为它们对实验性哌啶酮最敏感且耐受性最强。通过常用检测细胞凋亡诱导的实验评估细胞死亡机制。这些实验表明,2608和2610均诱导活性氧(ROS)积累、线粒体去极化和激活的半胱天冬酶-3/7。我们的研究结果表明,哌啶酮通过固有凋亡途径诱导细胞死亡。其他实验表明,