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描述 | Aldehyde dehydrogenase can catalyze the oxidation of aldehydes by converting them to carboxylic acids, which leave the liver and are metabolized by the body's muscle and heart. Thus the accumulation of aldehydes do harm to human. Disulfiram (DSF) is currently a clinical used inhibitor for aldehyde dehydrogenase treating alcoholism with average IC50 value of 300 nM. Moreover, studies showed that DSF may also have antitumor and chemosensitizing activities. DSF treatment could inhibit growth of TNBC cells by increasing cell death and senescence and induced 38% cell death after 72 hrs treatment combined with doxorubicin. Besides, DSF also caused many MDA-MB-231 cells death and enlarged cell morphology, showing 23% X-gal-positive cells. Cancer stem cells (CSCs) in TNBC cell lines were inhibited by 5% with DSF treatment alone or by 65% with combined treatment with doxorubicin.[1] In purified rabbit 20S proteasome assay, DSF-copper complex inhibited the chymotrypsin-like activity with an IC50 value of 7.5 μM while DSF alone had no effect even at concentration of 20 μM. The complex also led to 95% reduction of the proteasomal chymotrypsin-like activity in the breast cancer cells and inhibited proliferation of MDA-MB-231 cells by 55%, 65% and 85% when the concentrations were 5, 10, 20 μM respectively. Besides, the complex induced apoptotic cell death due to the detection of PARP cleavage in the breast cancer cells, suggesting that the copper ion should be responsible for the inhibiting ability of DSF. Treated the MCF-10A (normal cells) and MCF10DCIS.com cell lines (malignant cells) with 20 μM the complex led to 97% reduction of proteasomal chymotrypsin-like activity in MCF10DCIS.com cell lines but no effect on the MCF-10A cell lines, suggesting the nontoxic effect of the DSF-copper complex in normal cells. The CuCl2-precultured MDA-MB-231 cells treated with 20 μM DSF also showed 67% inhibition of the proteasomal activity as well as the accumulation of PARP cleavage, suggesting copper ion is important for DSF treatment. Furthermore, DSF-treated tumors resulted in 74% inhibition of tumor growth and 87% inhibition of the proteasomal activity[2] . Disulfiram potently inhibited GSDMD pore formation in liposomes and inflammasome-mediated pyroptosis and IL-1β secretion in human and mouse cells. It covalently modify a conserved Cys (Cys191 in human and Cys192 in mouse GSDMD) that is critical for pore formation[3]. It also works as a pyroptosis inhibitor by blocking gasdermin D pore formation[4]. | ||
作用机制 | Disulfiram is capable of binding copper react with sulfhydryl groups.[2] |
细胞研究 | |||||
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细胞系 | 浓度 | 检测类型 | 检测时间 | 活动说明 | 数据源 |
CHO cells | Function assay | Agonist activity at human TRPA1 channel expressed in CHO cells assessed as increase in intracellular calcium levels, EC50=3 μM | 20356305 | ||
human MCF10A cells | Proliferation assay | 72 h | Antiproliferative activity against human MCF10A cells after 72 hrs by MTT assay, IC50=10 μM | 20222671 | |
human MDA-MB-231 cells | Proliferation assay | 72 h | Antiproliferative activity against human MDA-MB-231 cells expressing BCA2 and ERalpha after 72 hrs by MTT assay, IC50=0.32 μM | 20222671 |
临床研究 | |||||
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NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT00372749 | Alcoholic Intoxication, Chroni... 展开 >>c 收起 << | Not Applicable | Completed | - | France ... 展开 >> Hopital Emile Roux APHP Limeil-Brevannes, France, 94450 收起 << |
NCT02309801 | Healthy | Phase 1 | Completed | - | Spain ... 展开 >> Parc de Salut Mar. Barcelona, Spain, 08003 收起 << |
NCT02770378 | Glioblastoma | Phase 1 | Active, not recruiting | March 2020 | Germany ... 展开 >> University of Ulm School of Medicine Ulm, Baden-Württemberg, Germany, 89081 收起 << |
实验方案 | |||
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
3.37mL 0.67mL 0.34mL |
16.86mL 3.37mL 1.69mL |
33.72mL 6.74mL 3.37mL |
参考文献 |
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[3]Identification of pyroptosis inhibitors that target a reactive cysteine in gasdermin D |