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首页> 外文期刊>Anti-cancer agents in medicinal chemistry >5-Lipoxygenase and Cyclooxygenase Inhibitory Dammarane Triterpenoid 1 from Borassus flabellifer Seed Coat Inhibits Tumor Necrosis Factor-alpha Secretion in LPS-Induced THP-1 Human Monocytes and Induces Apoptosis in MIA PaCa-2 Pancreatic Cancer Cells
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5-Lipoxygenase and Cyclooxygenase Inhibitory Dammarane Triterpenoid 1 from Borassus flabellifer Seed Coat Inhibits Tumor Necrosis Factor-alpha Secretion in LPS-Induced THP-1 Human Monocytes and Induces Apoptosis in MIA PaCa-2 Pancreatic Cancer Cells

机译:5-脂氧合酶和环加氧酶抑制Dammarane三萜三萜1从黄皮草种子皮抑制LPS诱导的THP-1人单核细胞中的肿瘤坏死因子-α分泌并诱导MIA PaCa-2胰腺癌细胞的凋亡。

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摘要

Phospholipase A2 (PLA2), Cyclooxygenase (COX) and 5-Lipoxygenase (5-LOX) are arachidonic acid metabolizing enzymes and their inhibitors have been developed as therapeutic molecules for cancer and inflammation related disorders. In the present study, PLA2, COX 1&2 and 5-LOX inhibitory studies of Borassus flabellifer seed coat extract were carried out and substantial 5-LOX inhibitory activity was found. Dammarane triterpenoid 1 (Dammara-20,23-diene-3,25-diol) was isolated according to 5-LOX activity guided isolation, and screened for COX (1 & 2) inhibitory activities. Dammarane triterpenoid 1 inhibited carrageenan-induced rat paw edema and TNF-a secretion levels in lipopolysaccharide (LPS)-induced THP-1 human monocytes. Anticancer activity studies demonstrated the antiproliferative effect of dammarane triterpenoid 1 on various cancer cell lines including MIA PaCa-2 pancreatic, DU145 prostate, HL-60 leukemia and Caco-2 colon cancers. Dammarane triterpenoid 1 showed good antiproliferative activity on MIA PaCa-2 pancreatic cancer cell line with IC50 of 12.36 +/- 0.33 mu M, among other tested cell lines. Apoptosis inducing activity of dammarane triterpenoid 1 was confirmed based on increased sub-G0 phase cell population in cell cycle analysis, loss of mitochondrian membrane potential, elevated levels of cytochrome c, nuclear morphological changes and DNA fragmentation in MIA PaCa-2 pancreatic cancer cells. Therefore, dammarane triterpenoid skeleton may raise the hope of developing novel anti-inflammatory and anticancer drugs in the future.
机译:磷脂酶A2(PLA2),环氧合酶(COX)和5-脂氧合酶(5-LOX)是花生四烯酸代谢酶,其抑制剂已被开发为癌症和炎症相关疾病的治疗分子。在本研究中,进行了黄皮菜籽皮提取物的PLA2,COX 1&2和5-LOX抑制研究,发现了显着的5-LOX抑制活性。根据5-LOX活性指导的分离方法,分离出Dammarane triterpenoidoid 1(Dammara-20,23-diene-3,25-diol),并筛选出COX(1&2)抑制活性。 Dammarane triterpenoidoid 1抑制角叉菜胶诱导的大鼠爪水肿和脂多糖(LPS)诱导的THP-1人单核细胞中TNF-a的分泌水平。抗癌活性研究证明了金刚烷三萜1对多种癌细胞系的抗增殖作用,包括MIA PaCa-2胰腺癌,DU145前列腺癌,HL-60白血病和Caco-2结肠癌。 Dammarane triterpenoidoid 1对MIA PaCa-2胰腺癌细胞系显示出良好的抗增殖活性,IC50为12.36 +/- 0.33μM,在其他测试的细胞系中。根据MIA PaCa-2胰腺癌细胞在细胞周期分析中亚-G0期细胞总数增加,线粒体膜电位丧失,细胞色素c水平升高,细胞核形态变化和DNA片段化的情况,证实了金刚烷三萜1的凋亡诱导活性。因此,达玛烷三萜骨架可能会为将来开发新型抗炎和抗癌药物带来希望。

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