中国病理生理杂志
中國病理生理雜誌
중국병리생리잡지
CHINESE JOURNAL OF PATHOPHYSIOLOGY
2014年
9期
1574-1579
,共6页
巴俊慧%吴本权%王艳红%刘慧%杨洋%石云锋%罗进梅%张天托
巴俊慧%吳本權%王豔紅%劉慧%楊洋%石雲鋒%囉進梅%張天託
파준혜%오본권%왕염홍%류혜%양양%석운봉%라진매%장천탁
树突状细胞%黏蛋白1%电转染%抗肿瘤免疫%肺肿瘤
樹突狀細胞%黏蛋白1%電轉染%抗腫瘤免疫%肺腫瘤
수돌상세포%점단백1%전전염%항종류면역%폐종류
Dendritic cells%Mucin 1%Electroporation%Anti-tumor immunity%Lung neoplasms
目的:将体外扩增的黏蛋白1( MUC1) mRNA转染入成熟的树突状细胞( DCs ),观察其体外诱导的特异性抗肿瘤效应。方法:将分离提纯的单核细胞培养诱导为DC并用流式细胞术鉴定。构建pcDNA3.1(+)-MUC1质粒,体外转录为mRNA,电穿孔法转染DCs。定量PCR检测转染的DCs中MUC1的表达;MTT法检测T细胞增殖情况;流式细胞术检测CD8+在T细胞的表达;LDH释放法测定细胞毒性,ELISA检测IFN-γ分泌水平。结果:流式细胞术结果表明成熟DCs标志表型的表达明显高于对照组。定量PCR结果说明转染后的DCs MUC1 mR-NA相对表达量增高。转染组DCs与T细胞按1∶10共培养时,刺激增殖能力明显高于未转染组,且CD8+T细胞表达率高于未转染组,诱导产生特异性的细胞毒性T细胞杀伤表达MUC1蛋白的靶细胞,而未转染组的杀伤作用较弱。转染组DCs与T细胞共培养的上清中IFN-γ的分泌水平高于未转染组。结论:电穿孔法可以将MUC1 mRNA成功转染至DCs,产生特异性杀伤效应,为以MUC1为靶点的非小细胞肺癌的免疫治疗提供实验和理论依据。
目的:將體外擴增的黏蛋白1( MUC1) mRNA轉染入成熟的樹突狀細胞( DCs ),觀察其體外誘導的特異性抗腫瘤效應。方法:將分離提純的單覈細胞培養誘導為DC併用流式細胞術鑒定。構建pcDNA3.1(+)-MUC1質粒,體外轉錄為mRNA,電穿孔法轉染DCs。定量PCR檢測轉染的DCs中MUC1的錶達;MTT法檢測T細胞增殖情況;流式細胞術檢測CD8+在T細胞的錶達;LDH釋放法測定細胞毒性,ELISA檢測IFN-γ分泌水平。結果:流式細胞術結果錶明成熟DCs標誌錶型的錶達明顯高于對照組。定量PCR結果說明轉染後的DCs MUC1 mR-NA相對錶達量增高。轉染組DCs與T細胞按1∶10共培養時,刺激增殖能力明顯高于未轉染組,且CD8+T細胞錶達率高于未轉染組,誘導產生特異性的細胞毒性T細胞殺傷錶達MUC1蛋白的靶細胞,而未轉染組的殺傷作用較弱。轉染組DCs與T細胞共培養的上清中IFN-γ的分泌水平高于未轉染組。結論:電穿孔法可以將MUC1 mRNA成功轉染至DCs,產生特異性殺傷效應,為以MUC1為靶點的非小細胞肺癌的免疫治療提供實驗和理論依據。
목적:장체외확증적점단백1( MUC1) mRNA전염입성숙적수돌상세포( DCs ),관찰기체외유도적특이성항종류효응。방법:장분리제순적단핵세포배양유도위DC병용류식세포술감정。구건pcDNA3.1(+)-MUC1질립,체외전록위mRNA,전천공법전염DCs。정량PCR검측전염적DCs중MUC1적표체;MTT법검측T세포증식정황;류식세포술검측CD8+재T세포적표체;LDH석방법측정세포독성,ELISA검측IFN-γ분비수평。결과:류식세포술결과표명성숙DCs표지표형적표체명현고우대조조。정량PCR결과설명전염후적DCs MUC1 mR-NA상대표체량증고。전염조DCs여T세포안1∶10공배양시,자격증식능력명현고우미전염조,차CD8+T세포표체솔고우미전염조,유도산생특이성적세포독성T세포살상표체MUC1단백적파세포,이미전염조적살상작용교약。전염조DCs여T세포공배양적상청중IFN-γ적분비수평고우미전염조。결론:전천공법가이장MUC1 mRNA성공전염지DCs,산생특이성살상효응,위이MUC1위파점적비소세포폐암적면역치료제공실험화이론의거。
AIM:To investigate the specific anti-tumor effects of mature dendritic cells ( DCs) transfected with amplified mucin 1 ( MUC1) mRNA in vitro.METHODS:DCs separated and purified from the peripheral blood mononu-clear cells were induced in vitro and then identified by flow cytometry .pcDNA3.1(+)-MUC1 plasmid was constructed and was able to transcribe MUC1 mRNA in vitro.The MUC1 mRNA was transfected into DCs by electroporation .MUC1-trans-fected DCs were used to induce T cells to be cytotoxic T-lymphocytes .Quantitative real-time PCR was performed to assess MUC1 mRNA expression in transfected DCs .The proliferation of T cells was examined by MTT assay .The proportion of CD8 +cells in the T cells was determined by flow cytometry and the specific cytotoxicity was measured by LDH assay .The secretion of IFN-γwas detected by ELISA .RESULTS: The marker gene expression in the DCs transfected with MUC 1 mRNA was significantly increased compared with control group , peaking at 24 h.The transfection group showed the higher capacity to stimulate the proliferation of T cells compared with control group when the ratio of DCs to T cells was 1∶10.The proportion of CD8 +cells in transfection group was higher than that in control group .The lethal effect of special cytotoxic T-lymphocytes on target cells in transfection group was stronger than that in control group .The level of IFN-γin the cell su-pernatant of transfection group was higher than that in control group .CONCLUSION:DCs plus MUC1 mRNA by electri-cal transfection induces specific anti-tumor effects , which provides an experiment evidence of using MUC 1 as a target for immunotherapeutic strategy against non-small cell lung cancer .