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B7

B7的相关文献在1985年到2023年内共计7518篇,主要集中在基础医学、肿瘤学、内科学 等领域,其中期刊论文83篇、专利文献7435篇;相关期刊64种,包括国际免疫学杂志、中国免疫学杂志、复旦学报(医学版)等; B7的相关文献由12908位作者贡献,包括王涛、石召华、叶利春等。

B7—发文量

期刊论文>

论文:83 占比:1.10%

专利文献>

论文:7435 占比:98.90%

总计:7518篇

B7—发文趋势图

B7

-研究学者

  • 王涛
  • 石召华
  • 叶利春
  • 张明皓
  • 彭师奇
  • 赵明
  • 赵彦良
  • 不公告发明人
  • 曹兴国
  • 关小羽
  • 期刊论文
  • 专利文献

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    • 张林祥; 李传进; 李超; 纪文杰; 黄博文
    • 摘要: 使用低温大塑性变形(SPD)、动态再结晶控轧(DRCR)及形变诱导铁素体相变(DIFT)等工艺技术,并结合NETZSCH同步热分析仪,GLEEBLE热模拟试验机,优化B7盘条的轧制及冷却工艺,使得轧制的B7盘条具有硬度低,铁素体含量、断面收缩率及延伸率高,无贝氏体及马氏体的特点,经下游客户使用,可以满足不退火直接拉拔并冷镦成形的要求。
    • 张林祥; 李传进; 李超; 纪文杰; 黄博文
    • 摘要: 使用低温大塑性变形(SPD)、动态再结晶控轧(DRCR)及形变诱导铁素体相变(DIFT)等工艺技术,并结合NETZSCH同步热分析仪,GLEEBLE热模拟试验机,优化B7盘条的轧制及冷却工艺,使得轧制的B7盘条具有硬度低,铁素体含量、断面收缩率及延伸率高,无贝氏体及马氏体的特点,经下游客户使用,可以满足不退火直接拉拔并冷镦成形的要求.
    • 张蕾
    • 摘要: 2月7日中午,接到命令,集合待发。2月8日凌晨,抵达武汉,密集培训。2月9日,真正的战斗终于开始!这一天,我们医疗队整建制进驻同济医院中法新城院区B7东疗区,这里原本是血液肿瘤科病房,刚刚按照隔离病房的要求紧急改建成了一个全新的新冠肺炎重症疗区。
    • 陈旭梅
    • 摘要: 肿瘤多药耐药是目前肿瘤治疗失败的主要原因之一,也是肿瘤治疗领域的重要问题.随着对肿瘤免疫微环境方面的研究不断进行,肿瘤免疫逃逸的地位得以深入理解,其中相关分子B7-H1的异常表达与肿瘤耐药发生之间的密切关系不断被认识,其表现在耐药肿瘤可能较非耐药肿瘤细胞更易逃逸机体的免疫系统监视和杀伤.文章主要对免疫逃逸相关分子B7-H1影响恶性肿瘤多药耐药研究进展进行综述.
    • 摘要: 2019年8月22日,冯友军教授团队在《细胞》( Cell )子刊 iScience 杂志在线发表题为“Molecular basis of BioJ, a unique gatekeeper in bacterial biotin synthesis”的研究论文(https://www.cell.com/iscience/fulltext/S2589-0042(19)30306-2),报道了维生素B7研究新进展。
    • Ting Zhang; Fang Wang; Jing-Yi Wu; Zhi-Chao Qiu; Yan Wang; Fen Liu; Xiao-Song Ge; Xiao-Wei Qi; Yong Mao; Dong Hua
    • 摘要: AIM To investigate the expression and clinical significance of B7 homolog 3(B7-H3) and β-1,3-galactosyltransferase-4(B3 GALT4) in colorectal cancer(CRC) patients.METHODS Using tissue microarray, we identified the expression of B7-H3 and B3 GALT4 in 223 CRC patient samples by immunohistochemistry and evaluated the possible correlation between B7-H3 and B3 GALT4 and clinicaloutcomes. Further, the m RNA and protein expression were identified to establish the regulatory relationship of B7-H3 with B3 GALT4 in vitro.RESULTS A significant positive correlation between B7-H3 and B3 GALT4 was observed in CRC specimens(r = 0.219, P = 0.001). High expression of B7-H3 was identified as a significant independent predictor of poor overall survival(OS) [hazard ratio(HR) = 1.781; 95%CI: 1.027-3.089; P = 0.040]. Moreover, high expression of B3 GALT4 was also recognized as an independent predictor of inferior OS(HR = 1.597; 95%CI: 1.007-2.533; P = 0.047). Additionally, CRC patients expressing both high B7-H3 and high B3 GALT4 contributed to a significant decrease in OS(HR = 2.283; 95%CI: 1.289-4.042; P = 0.005). In CRC cell lines with stable expression of high B7-H3, the m RNA and protein expressions of B3 GALT4 were significantly upregulated. Similarly, the expression of B3 GALT4 was significantly reduced when expression of B7-H3 was knocked down.CONCLUSION The expression of B3 GALT4 in CRC is positively correlated with B7-H3 expression in vitro. B7-H3/B3 GLAT4 may be used as dual prognostic biomarkers for CRC.
    • 官慧
    • 摘要: Tcells need two signals to promote their activation.Only two signals existing at the same time,T cells can effectively activate,proliferate and secrete cell factors or play the toxic effects of cells.One signal is that T cell receptor recognize antigen and CD3 will transduce it to cells.The other is the combination of costimulatory molecules from antigen-presenting cell and costimulatory molecules receptor on the T cell surface.B7 on antigen-presenting cell and CD28/cytotoxic T lymphocyte-antigen-4 expressed on T cells are the most important costimulatory molecules.%未致敏T细胞的活化至少需要两种信号,只有在两种信号同时存在时,T细胞才能有效活化、增殖,进而分泌细胞因子或发挥细胞毒性作用.第一信号由T细胞受体识别抗原产生,经CD3分子将信号传导至细胞内;第二信号是非抗原依赖性的“协同刺激信号”,它是由抗原呈递细胞或靶细胞表面的协同刺激分子与T细胞表面的协同刺激分子受体相互作用而提供的.这些协同刺激分子中最重要的是抗原呈递细胞表面的B7分子和T细胞表面的CD28、细胞毒T细胞抗原-4.
    • 金洪娟; 王权; 所剑
    • 摘要: Objective To costruct the mB7-1-pcDNA3 recombinated vector and observe its expression in B16 cells .Method mB7-1 cDNA was cloned by RT—PCR from BALE /C mouse splenic cells and inserted into pcDNA3 to construct an eukaryotic expres-sion vector(mB7-1-pcDNA3) ,which identified by digestion (with EcoR I and Xho I ) and genetic sequencing .The mB7-1-pcDNA3 plasmid was transfected into B16 cells by liposomes ,and detected by RT—PCR .Results Recombinated vector mB7-1-pcDNA3 was obtained and the expression of mB7-1 was observed in B16 cells .Conclusion The successful construction and expression of mB7-4 pcDNA3 has laid foudation for the further study on tumour immunotherapy .%目的 构建mB7-1真核表达载体并检测其在B16细胞中的瞬时表达情况.方法 提取小鼠脾细胞mRNA,PCR法获得mB7-1片段,与pcDNA3连接,并进行酶切鉴定及测序.重组质粒经脂质体介导转染鼠B16细胞,检测基因表达情况.结果 完成mB7-1-pcDNA3重组载体连接及鉴定,基因测序与Genebank一致,并转染至B16细胞,检测到基因表达.结论 成功构建mB7-1-pcDNA3真核表达载体,获得mB7-1表达细胞系,为研究其抗瘤效应奠定了基础.
    • 袁成良; 刘定海; 刘利洪; 邹自英; 魏世刚
    • 摘要: Objective To investigate the expression of CD80 and CD86 costimulatory molecule on dendritic Ceils (DC) inhibited by small interfering RNA (siRNA). Methods Three different siRNA (siRNAl-targeted against CD80,siRNA2-targeted against CD86 and siRNAc) were designed and synthesized and transfected into DC with liposome. At 24, 48 and 72h after transfection, the expression of CD80 and CD86 gene were detected by semi-quantitative RT-PCR,and the protein of CD80 and CD86 were assayed by Western blot. Results The results of semi-quantitative RT-PCR showed the mRNA of CD80 and CD86 were inhibited. The rate of suppression of CD80 were (50.0±3.63)% , (66.8±4. 12)% and (76.6±4.87)% by siRNA1 at 24, 48 and 72h after transfeetion, respectively. The rate of suppression of CD86 were (53.0±3.70)%, (60. 5±3.92)% and (73.4±4.46)% by siRNA2 at the same time. At 48 and 72h after transfection, the degrees of reduction with siRNA1 and siRNA2 were (67.3 ± 4. 80) %, (80. 9 ± 5. 23) %, (60. 7 ±4. 15)% and (74.7±4.63)%, respectively. Conclusion The siRNA could reduce the expression of B7 protein and B7 mRNA level. The silencing effect on B7 mRNA by siRNA may contribute to costimulatory blockade.%目的 探讨体外合成的小干扰RNA(siRNA)对人树突状细胞(DC)共刺激分子CD80和CD86基因表达的影响.方法 设计并合成了3条siRNA(siRNA1、siRNA2和siRNAc),在脂质体的介导下转染树突状细胞,于转染后24、48、72h收集细胞,用半定量RT-PCR检测CD80和CD86 mRNA的变化,用蛋白印迹检测CD80、CD86蛋白的表达.结果 转染24、48、72h后,DC C1380 mRNA均有明显减少(P0.05).Western Blot结果显示转染48、72h后,siRNA1对CD80蛋白表达的抑制率为(67.3±4.80)%和(80.9±5.23)%;siRNA2后对CD86蛋白表达的抑制率为(60.7±4.15)%和(74.7±4.63)%.结论 siRNA可特异抑制树突细胞B7基因的转录争表达,为进一步研究siRNA诱导移植免疫耐受提供了理论和实验基础,为诱导器官移植免疫耐受提供了新思路和途径.
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