河北医科大学学报

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抗原致敏IL27基因修饰的树突状细胞活化的CTL对食管癌细胞线粒体膜电位及凋亡的影响

  

  1. 1.河北省隆尧县医院胸外科,河北 隆尧 055350;2.河北省涉县医院病理科,河北 涉县 056400;3.冀中能源峰峰集团
    有限公司总医院外科,河北 邯郸 056201;4.冀中能源峰峰集团有限公司总医院皮肤性病科,
    河北 邯郸 056201;5.河北医科大学第四医院胸外科,河北 石家庄 050011
  • 出版日期:2016-12-25 发布日期:2016-12-29
  • 作者简介:王少青(1981-),男,河北隆尧人,河北省隆尧县医院主治医师,医学学士,从事胸外科疾病诊治研究。
  • 基金资助:
    河北省医学科学研究重点课题(20110136)

Effects of specific CTL which are activated by DC modified with IL27 gene and esophageal tumor lysate on esophageal carcinoma cell mitochondria membrane potential and cell apoptosis

  1. 1.Department of  Chest Surgery, the Hospital of Longyao County, Hebei Province Longyao 055350, China;
    2.Department of Pathology, Shexian Hospital of Hebei Province, Shexian 056400, China;
    3.Department of Surgery, General Hospital of Fengfeng to Jizhong Energy Group,
    Handan 056201, China; 4.Department of Dermatology, General Hospital of
    Fengfeng to Jizhong Energy Group,Hebei Province Handan 056201, China;
    5.Department of Thoracic Surgery, Fourth Hospital of Hebei
    Medical University,Shijiazhuang 050011, China
  • Online:2016-12-25 Published:2016-12-29

摘要: [摘要] 目的 研究 IL-27 基因转染的树突状细胞( dendriticcell , DC )活化 CTL 体内诱导食管癌细胞凋亡的影
响。方法 通过在裸鼠的移植瘤周注射食管癌细胞抗原致敏、
IL-27 基因修饰 DC ( DC IL-27+Ag )活化的特异 CTL ,采用
流式细胞术检测细胞凋亡水平,荧光染料罗丹明 123 染色检测细胞线粒体膜电位水平并检测 caspase-3 蛋白表达水
平。结果 5 组之间凋亡率、膜电位水平、 caspase-3 表达差异均有统计学意义( P <0.05 ): DC IL-27+Ag 、 DC IL-27 、 DC naive 、
Tnaive 组凋亡率、 caspase-3 表达均 高于 PBS 组,膜电 位水 平 低于 PBS 组; DC IL-27+Ag 、 DC IL-27 、 DC naive 组 凋亡 率、
caspase-3 表达均高于 Tnaive 组,膜电位水平低于 Tnaive 组; DC IL-27+Ag 、 DC IL-27 组凋亡率、 caspase-3 表达均高于
DC naive 组,膜电位水平低于 DC naive 组; DC IL-27+Ag 组凋亡率、 caspase-3 表达均高于 DC IL-27 组,膜电位水平低于 DC IL-27
组。结论 在荷瘤小鼠体内,经食管癌细胞抗原致敏、
IL-27 基因修饰的 DC 可活化特异性 CTL 产生较强的细胞毒
作用,其机制可能是 CTL 通过降低食管癌细胞线粒体膜电位,启动内源性线粒体凋亡途径,激活 caspase-3 蛋白,从
而诱导细胞凋亡

关键词: 食管肿瘤, 树突状细胞, 白细胞介素27, 细胞凋亡

Abstract: [ Abstract ] Objective Toexploretheeffectofspecificcytotoxiclymphocyte (
CTL ) whichare
activatedbydendriticcell ( DC ) modified withIL-27 geneandesophagealtumorlysateon
esophagealcarcinomacellapoptosis.Methods After makingthe nude mice models with
esophagealcancercellsuccessfully , the mice wereimmunized withspecific CTL whichare
activatedbyIL-27genemodifiedDCloadedwithesophagealtumorlysate ( DC IL-27+Ag ) .Thecell apoptosisratewasanalyzedbyAnnexinV / PIstaining.Themitochondrialmembranepotential
was measuredby Rhodamine123stainingandtheexpressionlevelofcaspase-3protein was
detectedbyflowcytometry.Results Theratioofapoptosis , membranepotentialofmitochondria
andexpressionofcaspase-3of5groupsshowedsignificantdifference ( P <0.05 ) .Theratioof
apoptosisandcaspase-3proteinexpressioninDC IL-27+Ag group , DC IL-27 groupandDC naive group
werehigherthanthoseinPBSgroup ( controlgroup ) .Themembranepotentialofmitochondriain
DC IL-27+Ag group , DC IL-27 groupandDC naive groupwashigherthanthatinPBSgroup.Theratioof
apoptosisandcaspase-3proteinexpressioninDC IL-27+Ag , group , DC IL-27 groupand , DC naive group
werehigherthanthoseinTnaivegroup , butthemembranepotentialofmitochondriainDC IL-27+Ag
group , DC IL-27 groupandDC naive groupwaslowerthanthatinTnaivegroup.Theratioofapoptosis
andcaspase-3proteinexpressioninDC IL-27+Ag group , DC IL-27 group werehigherthanthosein
DC naive group , butthemembranepotentialofmitochondriainDC IL-27+Ag group , DC IL-27 groupwas
lowerthanthatin DC naive group.Theratioofapoptosisandcaspase-3proteinexpressionin
DC IL-27+Ag group , were higherthanthosein DC IL-27 group , butthe membrane potentialof
mitochondriainDC IL-27+Ag groupwaslowerthanthatinDC IL-27 group.Conclusion SpecificCTL ,
activatedbyDCmodifiedwithIL-27geneandesophagealtumorlysate , efficientlyplaycytotoxic
effectontumor-bearing miceinvivothroughreducingthemitochondrialmembranepotential ,
initiatingth

Key words: sophagealcarcinoma , dendriticcells , interleukin27 , cellapoptosis