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liucan9933鐵蟲 (小有名氣)
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[求助]
急求翻譯,多謝多謝
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Ferula vesceritensis is a plant that is used in the traditional medicine in Algeria. Chromatographic investigation of the methylene chloride/methanol extract of the aerial parts of F. vesceritensis afforded a crystal carotene sesquiterpene designed lapiferin (10-acetoxy-6-angeloyloxy-8,9-epoxy-trans-caxotan-4-ol) for the first time from this species. The structure was determined by comprehensive NMR studies, including DEPT, COSY, NOE, HMQC, HMBC and HRMS, and X-ray data of lapiferin. We report here for the first time the isolation of lapiferin from F. vesceritensis as a new natural source, and we additionally report the first X-ray data for lapiferin. We also report for the first time the specific anti-cancer activity of lapiferin against human breast cancer cells (MCF-7), which is due to apoptosis and not necrosis. Moreover, we have identified for the first time the cell death pathway induced by lapiferin in human breast cancer cells, and also that lapiferin evokes multiple consequences that trigger apoptotic cell death, involving the enhancement of DNA fragmentation, the activation of caspases and the induction of histone acetylation inMCF-7 cells. In conclusion, we record here F. vesceritensis as a new natural source of lapiferin and its first X-ray analysis, and the promising specific anti-cancer activity against human breast cancer of lapiferin and accordingly F. vesceritensis extract. |
金蟲 (正式寫手)
| Ferula vesceritensis 是一種阿爾及利亞人使用的草藥。對F.vesceritensis 的地上部分的二氯甲烷/甲醇抽提物的色譜分析得到一種晶體狀胡蘿卜素倍半萜烯,將其命名為lapiferin (10-acetoxy-6-angeloyloxy-8,9-epoxy-trans-caxotan-4-ol),這是首次從這種植物得到這種物質(zhì)。用泛NMR研究包括DEPT, COSY, NOE, HMQC, HMBC and HRMS, and X-ray方法來研究lapiferin的結構。我們首次報道了從F.vesceritensis 分離得到的lapiferin,并且我們還報道了lapiferin的X-ray數(shù)據(jù)。我們也報道了 lapiferin對于乳腺癌細胞(MCF-7)的與凋亡和不壞死相關的抗癌作用。而且我們發(fā)現(xiàn)了 lapiferin導致細胞死亡的途徑,而且 lapiferin導致多個結果:觸發(fā)細胞壞死,增加DNA碎片,信號傳導激活和誘導MCF-7細胞中的組氨酸乙;?傊覀儓蟮懒薋.vesceritensis 的lapiferin作為一種新的自然資源,它的X-ray分析,從 F. vesceritensis中提取的lapiferin特有的具有前途的抗乳腺癌的作用。 |
木蟲 (著名寫手)
傻~傻得沒得說的~
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阿魏屬植物vesceritensis是阿爾及利亞地區(qū)的一種傳統(tǒng)草藥。我們采用色譜分析的方法,從vesceritensis地上部分的二氯甲烷/甲醇提取物中分離得到一種胡蘿卜素倍半萜內(nèi)酯(10 -乙酰氧基-6 -當歸酰氧基-8 ,9 -環(huán)氧-反式-caxotan-4 -酯),該化合物為首次從該類植物中分離得到。采用多種核磁共振技術對該化合物進行結構鑒定,包括DEPT, COSY, NOE, HMQC, HMBC,HRMS和X衍射。我們首次從F. vesceritensis中分離得到一種新的天然植物成分lapiferin,首次報道了該化合物的X衍射數(shù)據(jù),首次從該植物中發(fā)現(xiàn)了一種特異性抗癌活性成分lapiferin,該化合物可以使乳腺癌細胞MCF-7凋亡而不僅是壞死。我們還首次確認了lapiferin誘導人類乳腺癌細胞凋亡的途徑,也研究了該化合物誘導凋亡細胞死亡所產(chǎn)生的復雜影響,包括促使DNA細胞裂解,激活半胱氨酸天冬氨酸蛋白酶,誘導MCF-7細胞組蛋白乙酰化。 結論,我們研究發(fā)現(xiàn)F. vesceritensis是lapiferin的一種新的天然植物來源,并首次報道了該化合物的X射線分析數(shù)據(jù),lapiferin及相應的F. vesceritensis提取物有望成為抗乳腺癌細胞的特異性活性成分。 |

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