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二十种混合氨基酸的质谱鉴定直接磷酰化物的正负离子FAB—MS分析
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作者 尹应武 麻远 +2 位作者 赵玉芬 辛斌 王光辉 《化学学报》 SCIE CAS CSCD 北大核心 1994年第11期1112-1117,共6页
将二十种天然氨基酸按等摩尔量混合后,用二异丙基亚磷酸酯直接磷酰化,可以高选择性(96%)地获得N-磷酰氨基酸衍生物的混合物,负离子FAB-MS可以原位检出混合物中全部N-磷酰氨基酸,且准分子离子峰较高,可发展为混合氨基酸衍生物全分析的有... 将二十种天然氨基酸按等摩尔量混合后,用二异丙基亚磷酸酯直接磷酰化,可以高选择性(96%)地获得N-磷酰氨基酸衍生物的混合物,负离子FAB-MS可以原位检出混合物中全部N-磷酰氨基酸,且准分子离子峰较高,可发展为混合氨基酸衍生物全分析的有效手段.正离子FAB-MS则对碱性磷酰化氨基酸的检出更有利. 展开更多
关键词 氨基酸 质谱 磷酰化物 FAB-MS
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Incorporation of azide sugar analogue decreases tumorigenic potential of breast cancer cells by reducing cancer stem cell population
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《Science China(Physics,Mechanics & Astronomy)》 SCIE EI CAS 2013年第3期279-285,共7页
The azido sugar, GalNAz, was successfully used for imaging and perturbing protein glycosylation in triple-negative breast cancer cell line, MDA-MB-231. After the incorporation of GalNAz in the triple-negative breast c... The azido sugar, GalNAz, was successfully used for imaging and perturbing protein glycosylation in triple-negative breast cancer cell line, MDA-MB-231. After the incorporation of GalNAz in the triple-negative breast cancer cell line, the tumor- igenicity of these cells was decreased. Results from gene analysis and drug treatment suggest that the tumorigenicity decrease may be attributed to the reduction of cancer stem cell population. Possible mechanisms of GalNAz induced cancer stem cells (CSCs) proportion change are discussed. 展开更多
关键词 breast cancer GLYCOSYLATION cell imaging cancer stem cell SPAAC reaction azidogiycan
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