Discovery of novel human inosine 5′-monophosphate dehydrogenase 2 (hIMPDH2) inhibitors as potential anticancer agents
作者:Chetan P. Shah、Prashant S. Kharkar
DOI:10.1016/j.ejmech.2018.09.016
日期:2018.10
The enzyme inosine5′-monophosphate dehydrogenase (IMPDH) catalyzes an essential step in the de novo biosynthesis of guanine nucleotides, and thus regulates the guanine nucleotide pool required for cell proliferation. Of the two isoforms, human IMPDH type 2 (hIMPDH2) is a validated molecular target for potential immunosuppressive, antiviral and anticancer chemotherapy. In search of newer hIMPDH2 inhibitors
肌苷5'-单磷酸脱氢酶(IMPDH)催化从头开始生物合成鸟嘌呤核苷酸,从而调节细胞增殖所需的鸟嘌呤核苷酸库。在这两种同工型中,人类2型IMPDH(h IMPDH2)是潜在的免疫抑制,抗病毒和抗癌化学疗法的经过验证的分子靶标。为了寻找新型的h IMPDH2抑制剂作为潜在的抗癌药,提出了三个新系列(A:5-氨基异苯并呋喃-1(3 H)-one,B:3,4-二甲氧基苯胺和C:苯并[ d ]-[1,3]合成了二氧杂-5-基甲胺)并进行了体外评估以及基于单元的活动。筛选了总共37个分子(29-65)的体外h IMPDH2抑制作用,尤其着重于建立其结构-活性关系(SAR)趋势。八种化合物(命中,30,31,33-35,37,41和43)表现出显著酶抑制(> 70%@10μM); 尤其是A系列分子比B系列更有效(在10μM下,抑制率<70%),而C系列成员则没有活性。命中的h IMPDH2 IC 50值范围为0
Synthesis and anticancer activity of chalcone–quinoxalin conjugates
作者:Xiaoyun Ma、Daoping Wang、Gang Wei、Qingdi Zhou、Xiuhai Gan
DOI:10.1080/00397911.2021.1881124
日期:2021.5.3
synthesized compounds exhibited moderate to good activity against the cancer cell lines selected. Particularly, Compound A5 showed the excellent potent activity against BPH-1 and MCF-7 with IC50 values of 10.4 and 9.1 μM, respectively, which is similar to doxorubicin (14.1 and 9.2 μM, respectively). As well as compound B6 exhibited most excellent activity toward PC12 with IC50 values of 16.4 μM. Compound
Novel <i>trans</i>-Ferulic Acid Derivatives Containing a Chalcone Moiety as Potential Activator for Plant Resistance Induction
作者:Xiuhai Gan、Deyu Hu、Yanjiao Wang、Lu Yu、Baoan Song
DOI:10.1021/acs.jafc.7b00958
日期:2017.6.7
A series of novel trans-ferulic acid derivatives containing a chalcone moiety were designed and synthesized to induce plant resistance. Antiviral activities of the compounds were evaluated. Bioassay results demonstrated that compounds F3, F6, F17, and F27 showed remarkable curative, protective, and inactivating activities against tobacco mosaic virus (TMV). With a 50% effective concentration (EC50) value of 98.78 mu g mL(-1), compound F27 exhibited the best protective activity compared with trans-ferulic acid (328.6 mu g mL(-1)), dufulin (385.6 mu g mL(-1)), and ningnanmycin (241.3 mu g mL(-1)). This protective ability was associated with potentiation of defense-related enzyme activity and activation of photosynthesis of tobacco at an early stage. This notion was, confirmed by up-regulated expression of stress responses and photosynthesis regulating proteins. This work revealed that F27 can induce resistance and enhance plant tolerance to TMV,Infection. Hence, F27 can be considered as a novel activator for inducing plant resistance.
Novel chalcone and flavone derivatives as selective and dual inhibitors of the transport proteins ABCB1 and ABCG2
作者:Katja Silbermann、Chetan P. Shah、Niteshkumar U. Sahu、Kapil Juvale、Sven Marcel Stefan、Prashant S. Kharkar、Michael Wiese
DOI:10.1016/j.ejmech.2018.12.019
日期:2019.2
translocation of drugs from the inside to the outside of cancercells is mediated at the expense of ATP. In the last 40 years, three ABCtransporters – ABCB1 (P-gp), ABCC1 (MRP1), and ABCG2 (BCRP) – have mainly been attributed to the occurrence of MDR in cancercells. One of the strategies to overcome MDR is to inhibit the efflux transporter function by small-molecule inhibitors. In this work, we investigated