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人乳头状瘤病毒16型多肽疫苗的制备及体内外效应观察
  • ISSN号:0529-567X
  • 期刊名称:中华妇产科杂志
  • 时间:0
  • 页码:300-306
  • 分类:R737.33[医药卫生—肿瘤;医药卫生—临床医学] R392.7[医药卫生—免疫学;医药卫生—基础医学]
  • 作者机构:[1]华中科技大学同济医学院附属同济医院妇产科,武汉430030
  • 相关基金:国家重点基础研究发展计划(2009CB521808);国家自然科学基金(30901586)
  • 相关项目:HPV16感染中核心早期蛋白的免疫效应机制及宫颈癌的免疫学靶向阻遏
中文摘要:

目的探讨人乳头状瘤病毒(HPV)16型多肽疫苗的制备,并观察HPV16多肽疫苗的体内外效应。方法(1)针对抗原加工相关转运子(TAP)设计HPV16E7蛋白的主要组织相容性复合物I类分子(MHC—I)的抗原结合表位,利用生物信息学分析平台筛选出一致性较高、特异性及亲和力较强的HPV16E7多肽作为研究对象制备HPV16多肽疫苗用于以下研究,本研究共筛选出3段多肽,分别命名为E7Pa、E7Pb、E7Pc。(2)C57BL/6小鼠注射鼠肺上皮细胞株TC-1细胞(为鼠源性的HPV16阳性的肿瘤细胞株)后,采用等额抽取的随机方法分为5组,E7Pa+二核苷胞嘧啶(CpG)、E7Pb+CpG、E7Pe+CpG[均为实验组,分别加入终浓度为50μg/ml的E7Pa、E7Pb、E7Pc和终浓度为12mg/L的刀豆蛋白(ConA)]、CpG(为阳性对照,加入终浓度为12mg/L的ConA)和空白对照组(不做任何处理)。采用四甲基偶氮唑蓝(MTT)比色法检测各组作用不同时间后小鼠脾T淋巴细胞的体外增殖效应,乳酸脱氢酶(LDH)释放法检测小鼠脾T淋巴细胞在不同效靶比下的体外细胞毒T淋巴细胞(CTL)活性,实时荧光定量RT—PCR技术检测小鼠肿瘤组织中1干扰素(IFN-γ)、白细胞介素2(IL-2)mRNA的表达水平,酶联免疫吸附试验(ELISA)检测小鼠外周血中IFN-γ、IL-2的表达水平,通过定期测量比较各组小鼠接种HPV16多肽疫苗后体内肿瘤体积的变化。结果(1)本研究筛选出了一致性较高、特异性及亲和力较强的3段HPV16E7多肽作为研究对象制备HPV16多肽疫苗,分别命名为E7Pa、E7Pb、E7Pe。(2)MTT比色法检测显尔,在接种疫苗24、48、72、96h后,以E7Pa+CpG组的增殖效应最明显,其细胞增殖率分别为(131±32)%、(302±15)%、(552±28)%、(731±24)%,明显高于空白对照组的(72±15)%、(120±57)%、(176±41)%、(288±29)%(P〈0.01);E

英文摘要:

Objective To prepare the human papillomavirus (HPV) 16 peptide vaccine and explore the effect in vitro and in vivo. Methods ( 1 ) Prediction of the major histocompatibility complex (MHC) class I restricted T cell epitopes by bioinformatics target at transporter associated with antigen processing (TAP) and named by E7Pa, E7Pb, E7Pc separately . (2)In vivo, the C57BL/6 mice were divided into five groups with same amounts randomly after loading with TC-1 cells (HPV 16 positive tumor cells from C57BL/6 mouse) , named as E7Pa + CpG,E7Pb + CpG,E7Pc + CpG( as experiment groups, and added 50 μg/ml E7Pa, E7Pb, E7Pe, respectively), CpG(as positive control group and added Con A with 12 mg/L final concentration ) and blank control group (without any treatment). The T cell proliferation was detected by methyl thiazolyl tetraolium (MTF) assay at different time points; the lactate dehydrogenase (LDH) delivery method was used to test the cytolytic T lymphocyte (CTL) activity of mouse splenic lymphocyte in different ratio of effector cells and target cells (E: T) ; the related cytokines in tumor tissue and mouse peripheral blood were evaluated by real-time PCR and enzyme-linked immunosorbent assay (ELISA), respectively. The tumor volumes were measured to contrast the therapeutic effect in different groups. Results ( 1 ) Three peptide named E7Pa, E7Pb, E7Pe were successfully preparated which had high affinity and specificity. (2) After vaccination of 24, 48, 72,96 hours, MTT results shown that the proliferation rate in E7Pa + CpG group were ( 131 ± 32) %, (302 ± 15 ) %, (552 ± 28 ) %, (731 ± 24 ) % individually, which were much higher than those in blank control [ ( 72 ± 15 ) %, ( 120 ± 57 ) % , ( 176 ± 41 ) %, (288 ±29) % ;P 〈0. 01 ], and the other groups i. e. E7Pb + CpG,E7Pc + CpG and CpG groups all proliferated much higher than those in blank control group with statistic signification ( P 〈 0.05 ) , bu

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期刊信息
  • 《中华妇产科杂志》
  • 中国科技核心期刊
  • 主管单位:中国科协
  • 主办单位:中华医学会
  • 主编:
  • 地址:北京市东四西大街42号
  • 邮编:100710
  • 邮箱:cjog@cma.org.cn
  • 电话:010-85158215
  • 国际标准刊号:ISSN:0529-567X
  • 国内统一刊号:ISSN:11-2141/R
  • 邮发代号:2-63
  • 获奖情况:
  • 获国家科委优秀期刊二等奖,获中国科协优秀期刊二等奖
  • 国内外数据库收录:
  • 美国化学文摘(网络版),荷兰文摘与引文数据库,美国生物医学检索系统,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊(2004版),中国北大核心期刊(2008版),中国北大核心期刊(2011版),中国北大核心期刊(2014版),中国北大核心期刊(2000版)
  • 被引量:76322