CRM1抑制劑的設(shè)計(jì)、合成及抗腫瘤活性評價(jià)
[Abstract]:CRM1 (Chromosome region maintenance 1, also known as XPO1 (Exportin 1), is a eukaryotic protein that regulates nuclear proteins, such as r RNA,sn RNA and m RNA, and RNA access nuclei. CRM1 can transport most tumor suppressor proteins and proto-oncoproteins. Abnormal expression is closely related to tumor development and drug resistance. Therefore, CRM1 has become one of the targets of cancer drug research. At present, most of the CRM1 inhibitors reported have 偽, 尾 unsaturated 未 lactone ring, including natural sources of gonadin, Leptomycin B and other compounds. The preliminary study of 偽, 尾 unsaturated 未 lactone rings shows that the substitution of unsaturated double bonds of lactone ring will make the antitumor activity of the target compounds disappear, but different side chains have great influence on the activity. Therefore, on the basis of the previous studies in our group, the structure optimization and structure-activity relationship of the leading compounds were studied based on the basic structure of the pilot compound control 2 and gonadin, and a new type of CRM1 inhibitor was found. The specific research works are as follows: 1. Synthesis and activity of 6-oxy / nitrogen / thiomethyl-6-dihydro-pyran-2-ketone. The unsaturated lactone ring was retained and the opposite chain was modified with control 2 as the lead compound. By introducing different heteratomic atoms (oxygen, nitrogen, sulfur) at 6 sites, 14 oxomethyl compounds, 4 nitromethyl compounds, 1 thiomethyl compound, 1 sulfoxide methyl compound were synthesized by substitution, ring opening, esterification, oxidation, ring closing and so on. Their antitumor activities were evaluated, and their IC50 values were higher than or equal to 2.31 渭 M. The antitumor activity of oxomethyl compounds, azomethyl compounds and thiomethyl compounds in benzene ring were all decreased or disappeared, while the other oxygen methyl compounds, sulfoxide group, which supplied electron groups, all had good antitumor activity. The results show that the electron-absorbing groups and 6-heteroatoms on the benzene ring have great influence on the anti-tumor activity of the compounds. Synthesis and activity of 2,6-azoethyl-5-dihydro-6-dihydro-pyran-2-one based on 6- sulfoxide compounds with good antitumor activity, the effects of amides on biological activity were studied by acylation of amino groups. Seventeen 6-azoethyl compounds were obtained by acylation, cyclization and thioacetylation, and their antitumor activities were evaluated. It was found that the antitumor activity of most of the compounds disappeared, indicating that the side chain amide-bond might have a great effect on the anti-tumor activity. Third, the effect of candidate compounds on the cell cycle, apoptosis and CRM1 protein expression of Hela cells. Therefore, based on the results of previous studies, the most active compound I11 was selected. To evaluate its effect on apoptosis rate and cell cycle distribution of Hela cells. The results showed that I11 could block Hela cells in G1 phase at 20 渭 M concentration and induce 22. 7% apoptosis. Western blot analysis showed that compound I _ 11 could significantly reduce the expression of CRM1 protein. In conclusion, based on the basic skeleton of gonadin, the potential CRM1 inhibitors were studied. 37 target compounds were synthesized, and their structures were confirmed by 1H NMR,13C NMR and HRMS. They are new compounds which have not been reported in the literature. The IC50 values of compound I11 to MGC-803,Hela,H1299 reached 2 渭 MU 4 渭 MU 6 渭 M. respectively. The IC50 values of compound I8 to MGC-803,Hela were all up to 8 渭 M. Compound I 11 can promote Hela cell apoptosis and arrest cell cycle arrest in G 1 phase. It was also found that compound I 11 could significantly reduce the expression of CRM1 protein. These results lay a good foundation for the further study of new CRM1 inhibitors.
【學(xué)位授予單位】:河北北方學(xué)院
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:R914;R96
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