Synthesis of β-Carboline-Based <i>N</i>-Heterocyclic Carbenes and Their Antiproliferative and Antimetastatic Activities against Human Breast Cancer Cells
作者:Shashikant U. Dighe、Sajid Khan、Isha Soni、Preeti Jain、Samriddhi Shukla、Rajeev Yadav、Pratik Sen、Syed M. Meeran、Sanjay Batra
DOI:10.1021/acs.jmedchem.5b00016
日期:2015.4.23
primary amines. All compounds were evaluated for their antiproliferative activity using humanbreastcancer and lung cancercell lines. Three compounds, 3c, 3j, and 3h, were discovered to display IC50 less than 10 μM againsthumanbreastcancer MDA-MB-231 cells at 24 h of treatment. Pharmacologically these compounds lead to G2/M phase cell cycle arrest and induction of cellular apoptosis by triggering intrinsic
通过1-(二甲氧基甲基)-9 H-吡啶并[3,4- b ]吲哚-3-羧酸甲酯,甲醛和伯胺之间的曼尼希反应,制备了一系列新型的基于β-咔啉的N-杂环卡宾。使用人乳腺癌和肺癌细胞系评估了所有化合物的抗增殖活性。发现三种化合物3c,3j和3h在治疗24小时时对人乳腺癌MDA-MB-231细胞的IC 50小于10μM。这些化合物在药理上会导致G 2/ M期细胞周期阻滞,并通过线粒体膜电位去极化和胱天蛋白酶激活来触发内在的凋亡途径,从而诱导细胞凋亡。在较低浓度下,这些化合物还通过MAP激酶信号异常和抑制基质金属蛋白酶而对高度转移的人乳腺癌MDA-MB-231细胞显示出抗迁移和抗侵袭的作用。但是,这些类似物在小鼠模型中缺乏体内作用,这可能归因于它们对HSA的强亲和力,这已通过化合物3h的光谱进行了研究。
β-carboline-based turn-on fluorescence chemosensor for quantitative detection of fluoride at PPB level
作者:Aritra Das、Shashikant U. Dighe、Nilimesh Das、Sanjay Batra、Pratik Sen
DOI:10.1016/j.saa.2019.05.004
日期:2019.9
of only fluoride in the solution with a clear isosbestic points at 357 nm and 392 nm. More interestingly, the chemosensor gives a turn-on type of fluorescence at 554 nm in the presence of fluoride. Further it was found that the sensor is highlyselective towards fluoride over other anions including chloride, bromide, iodide, nitrate, borate, perchlorate and can quantitatively detect fluoride at ppb