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148篇 您的检索式:作者名="Popoff"
    题名 作者 年代 出处 被引量
1胶质瘤干细胞对替莫唑胺敏感性的研究显示文摘目的探讨胶质瘤干细胞(GSC)对替莫唑胺(TMZ)的敏感性及耐药机制。方法新鲜多形性胶质母细胞瘤(GBM)标本培养后获得GSC。免疫荧光技术检测未分化GSC的CD133及分化生长GSC的GFAP的表达,MTS法检测对替莫唑胺的敏感性,流式细胞技术对CD133阳性细胞的比例进行定量,荧光标记的甲基化特异性PCR分析MGMT启动子区域的甲基化状态,Western blot检测抑癌基因PTEN的表达。结果(1)5例GBM标本中成功获得GSC,符合肿瘤干细胞定义。(2)5个GSC细胞株多数对TMZ不敏感。其中,T509的半数抑制浓度(IC50)为22.3μmol/L(敏感),T411的IC50为286.3μmol/L(中度敏感),其余3个细胞株T402,T405及T509的IC50皆大于1000μmol/L(不敏感)。(3)CD133阳性细胞比例大于10%的GSC细胞株对TMZ不敏感。(4)MGMT启动子区域呈去甲基化状态的GSC对TMZ不敏感或仅为中度敏感。(5)5个GSC细胞株中,PTEN表达水平差异大,与GSC对TMZ的敏感性无明显关联。结论GSC对TMZ普遍耐药,与MGMT启动子区域甲基化状态及CD133阳性细胞有关,而与PTEN蛋白表达水平无明显关联。赛克 WANG Shu-zhen Popoff S Yung WK Colman H 陈忠平 2009中华神经外科杂志2009,25,10:7
2Reactions of D-xylose and D- glucose in alkaline aqueous solutions 显示文摘Forsskahl I Popoff T Theander O 1976Carbohydrate Research1976,48,:1
3Typing of sheep clinical isolates and identification of enterotoxigenic Clostridium perfiT'n- gens strains by classical methods and by polymerase chain reac- tion (PCR) 显示文摘Kadra B Gouilou J P Popoff M 1999FEMS Immunol Med Microbiol1999,24,:1
4Expression of antigenic factor 0,54 is associated with the presence of a plasmid in Salmonella 显示文摘POPOFF M Y LE MINOR L 1985Ann Inst Pasteur Microbiol1985,136,:1
5Connective tissue growth factor coordinates chondrogenesis and angiogenesis during skeletal development 显示文摘Ivkovic S Yoon B S Popoff S N 2003Development2003,130,12:1
6Typing of sheep clinical isolates and identification of enterotxogenic Clostridium perfringens strains by classical methods and by polymerase chain reaction (PCR)显示文摘 GUILLOU J P POPOFF M 1999Ffms Immunol Med Microbiol1999,24,:1
7Rho GTPases link cytoskeletal rearrangements and activation processes induced via the tetraspanin CD82 in T lymphocytes显示文摘Delaguillaumie A Lagaudriere-Gesbert C Popoff MR 2002J Cell Sci2002,115,2:1
8A new taxon in the genus Neisseria显示文摘I Riou J Y Guibourdenche M Popoff M Y 1983Ann Microbiol(Paris)1983,134,2:1
9Typing of sheep clinical isolates and identification of enterotoxigenic Clostridium perfringens strains by classical methods and by poiymerase chain reaction (PCR)显示文摘KADRA B GUILLOU J P POPOFF M 1999Ferns Immunolo gy Medical Microbiology1999,24,25:1
10职位继任的反思显示文摘:职位继任规划工作在企业组织追求长期战略和持久业绩的过程中起着关键作用 ,对企业优良管理的延续性至关重要 ,同时也是董事会诸多职责中最容易被人忽视的。当今世界经济日益全球化 ,企业领导人员正面临许多新的挑战 ,必须为杰出的高级管理者和经理提供牢靠的职位继任保障。要通过人员开发计划将职位继任规划变成企业文化的一个核心价值 。Frank Popoff 黄坚勇 2001株洲工学院学报2001,15,1:1
11Clostridium perfringens : toxinnotype and genotype显示文摘Petit L Gibert M Popoff M R 1999Trend Microbiology1999,7,3:1
12Connective tissue growth factor coordinates chondrogenesis and angiogenesis during skeletal development 显示文摘Ivkovic S Yoon BS Popoff SN 2003Development2003,130,12:1
13Connective tissue growth factor coordinates chondrogenesis and angiogene- sis during skeletal development 显示文摘Ivkovic S Yoon BS Popoff SN 2003Development2003,130,12:1
14Polynucleoside sequence relatedness among motile Aeromonas species 显示文摘POPOFF M Y COYNAULT C KIREDJIAN M 1981CurrMicrobiol1981,5,:1
15Rho GTPases link eytoskeletal rearrangements and activation processes induced via the tetraspanin CD82 in T lymphoeytes 显示文摘Delaguillaumie A Lagaudriere-Gesbert C Popoff MR 2002J Cell Sci2002,115,2:1
16Specific inhibition of P'I-N expression reverses hyperglycemia in diabetic mice显示文摘Butler M McKay RA Popoff IJ 2002Diabetes2002,51,4:1
17Beta2-toxin, a novel toxin produced by Clostridium perfringens显示文摘Gibert M Jolivet-Renaud C Popoff MR 1997Gene1997,203,1:1
18Clostridium perfringens epsilon toxin shows structural similarity to the pore2forming toxin aerolysin显示文摘Cole A R Gibert M Popoff M 2004Nat Struct Mol Biol2004,11,8:1
19Initiation of a G2/M checkpoint after ultraviolrt radiation requires p38 kinase显示文摘Bulavin D V Higashimoto Y Popoff I J 2001Nature2001,411,6833:1
20Supplement 2002 (no,46) to the kauffmann- white scheme显示文摘Popoff MY Bockemuhl J Gheesling LL 2004Res Microbiol2004,155,:1
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