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郭勇, 王捷, 刘凤龙, 吴锦银, 施定基, 江悦华
《中国海洋药物》杂志1998年第1期(总第65期),-0001,():
-1年11月30日
应用DNA重组技术,将α型重组人种癌坏死因子衍生物(recombinant human tumor necrosls factor a,rhTNF α)cDNA插到穿援质粒PDC一8上,构建成穿棱表达载体PDC TNF,转入鱼腥藻PCC一712O中进行表达。SDS—PAGE分析和免疫印迹检测显示rhTNFa获稳定表达.表达量占藻体蛋白的15%。经超声破碎和离子交换层析获碍纯度达到90%的产品,其分子量为17.3kD,比活性为21X1061C/mg。
转基因, 蓝藻, 制备, α型重组人肿瘤坏死因子衍生物
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【期刊论文】高产黄酮苷银杏悬浮培养细胞系选育和继代培养稳定性研究
郭勇, 刘佳佳, 郑穗平, 张明浩
生物工程学报2001年1月/Chinese Journal of Biotechnology January 2001, Vol. 17, No. 1,-0001,():
-1年11月30日
Investigate the influence of culture media to growth and fhvonoI glycoside synthesis of calli introduced from seed ling of Cinkgo biloba.6 cell lines were selected from calll by hypoxla stress.Among these cell Lines the best one TZ1 which growth index was 4.12 and the flavonol glycoside content was 1.25% in dried cellwhichwss enhanced 257.1% compared with callus.The stability in subcultures wss investigated;The average content of flavonol glycoside wss 1.25% in dried cells and the growth index was 3.99 during 6 subeultures.Which variation coefficient was separately 0.065 and 0.048 The results show that hypoxia stress is a efficient method to select suspension cell line of higher prod uctivity of flavonol glycoside.
黄酮苷, 悬浮细胞系, 继代培养, 稳定性
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