军事医学
軍事醫學
군사의학
BULLETIN OF THE ACADEMY OF MILITARY MEDICAL SCIENCES
2014年
3期
207-211,233
,共6页
薛淑雅%杨月峰%王华%肖凤君%孙慧燕%张群伟%王秀冬%王立生
薛淑雅%楊月峰%王華%肖鳳君%孫慧燕%張群偉%王秀鼕%王立生
설숙아%양월봉%왕화%초봉군%손혜연%장군위%왕수동%왕립생
前列腺癌%溶瘤腺病毒%免疫基因
前列腺癌%溶瘤腺病毒%免疫基因
전렬선암%용류선병독%면역기인
prostate cancer%oncolytic adenovirnses%immunogene
目的制备前列腺癌特异性免疫溶瘤双功能腺病毒Ad-PL-PPT-E1A,评价其体外溶瘤和免疫激活功能。方法以LNCaP细胞和Jurkat细胞的cDNA为模板,采用普通PCR和巢式PCR分别扩增获得前列腺特异性抗原( prostate specific antigen,PSA)基因、CD40L-N 基因和 CD40L-C 基因;并采用重叠 PCR 方法将 PSA、Linker、CD40L-N 和CD40L-C基因依次连接并扩增获得融合蛋白基因PSA-IZ-CD40L(PL)。采用以Adeasy系统为基础的溶瘤腺病毒构建体系,构建并制备携带PL的溶瘤重组腺病毒Ad-PL-PPT-E1A。以不同感染复数(multiplicity of infection, MOI)的溶瘤腺病毒Ad-PL-PPT-E1A感染PC3M细胞后不同时间点,流式细胞术检测细胞凋亡情况;50 MOI的Ad-PL-PPT-E1A感染PC3M细胞,于48 h收集其裂解液,并将其作用于正常人外周血单个核细胞,CCK8检测细胞增殖能力。结果 PCR成功扩增并连接获得融合蛋白基因PL,构建并制备了携带PL基因的溶瘤腺病毒Ad-PL-PPT-E1A。 RT-PCR和Western印迹检测结果显示,Ad-PL-PPT-E1A可在PC3M细胞中高效表达E1A和PL蛋白。将Ad-PL-PPT-E1A感染PC3M细胞后,可见明显的细胞病变;同时,流式细胞检测结果显示,当感染滴度达到200 MOI时,48 h的凋亡率达到70.67%±2.98%。 CCK8结果显示,Ad-PL-PPT-E1A感染后,可恢复PC3M细胞裂解液对人外周血单个核细胞的抑制作用。结论成功制备和鉴定了前列腺癌特异性免疫溶瘤双功能腺病毒Ad-PL-PPT-E1A,并在体外证实了其具有溶瘤和免疫的双重功能。
目的製備前列腺癌特異性免疫溶瘤雙功能腺病毒Ad-PL-PPT-E1A,評價其體外溶瘤和免疫激活功能。方法以LNCaP細胞和Jurkat細胞的cDNA為模闆,採用普通PCR和巢式PCR分彆擴增穫得前列腺特異性抗原( prostate specific antigen,PSA)基因、CD40L-N 基因和 CD40L-C 基因;併採用重疊 PCR 方法將 PSA、Linker、CD40L-N 和CD40L-C基因依次連接併擴增穫得融閤蛋白基因PSA-IZ-CD40L(PL)。採用以Adeasy繫統為基礎的溶瘤腺病毒構建體繫,構建併製備攜帶PL的溶瘤重組腺病毒Ad-PL-PPT-E1A。以不同感染複數(multiplicity of infection, MOI)的溶瘤腺病毒Ad-PL-PPT-E1A感染PC3M細胞後不同時間點,流式細胞術檢測細胞凋亡情況;50 MOI的Ad-PL-PPT-E1A感染PC3M細胞,于48 h收集其裂解液,併將其作用于正常人外週血單箇覈細胞,CCK8檢測細胞增殖能力。結果 PCR成功擴增併連接穫得融閤蛋白基因PL,構建併製備瞭攜帶PL基因的溶瘤腺病毒Ad-PL-PPT-E1A。 RT-PCR和Western印跡檢測結果顯示,Ad-PL-PPT-E1A可在PC3M細胞中高效錶達E1A和PL蛋白。將Ad-PL-PPT-E1A感染PC3M細胞後,可見明顯的細胞病變;同時,流式細胞檢測結果顯示,噹感染滴度達到200 MOI時,48 h的凋亡率達到70.67%±2.98%。 CCK8結果顯示,Ad-PL-PPT-E1A感染後,可恢複PC3M細胞裂解液對人外週血單箇覈細胞的抑製作用。結論成功製備和鑒定瞭前列腺癌特異性免疫溶瘤雙功能腺病毒Ad-PL-PPT-E1A,併在體外證實瞭其具有溶瘤和免疫的雙重功能。
목적제비전렬선암특이성면역용류쌍공능선병독Ad-PL-PPT-E1A,평개기체외용류화면역격활공능。방법이LNCaP세포화Jurkat세포적cDNA위모판,채용보통PCR화소식PCR분별확증획득전렬선특이성항원( prostate specific antigen,PSA)기인、CD40L-N 기인화 CD40L-C 기인;병채용중첩 PCR 방법장 PSA、Linker、CD40L-N 화CD40L-C기인의차련접병확증획득융합단백기인PSA-IZ-CD40L(PL)。채용이Adeasy계통위기출적용류선병독구건체계,구건병제비휴대PL적용류중조선병독Ad-PL-PPT-E1A。이불동감염복수(multiplicity of infection, MOI)적용류선병독Ad-PL-PPT-E1A감염PC3M세포후불동시간점,류식세포술검측세포조망정황;50 MOI적Ad-PL-PPT-E1A감염PC3M세포,우48 h수집기렬해액,병장기작용우정상인외주혈단개핵세포,CCK8검측세포증식능력。결과 PCR성공확증병련접획득융합단백기인PL,구건병제비료휴대PL기인적용류선병독Ad-PL-PPT-E1A。 RT-PCR화Western인적검측결과현시,Ad-PL-PPT-E1A가재PC3M세포중고효표체E1A화PL단백。장Ad-PL-PPT-E1A감염PC3M세포후,가견명현적세포병변;동시,류식세포검측결과현시,당감염적도체도200 MOI시,48 h적조망솔체도70.67%±2.98%。 CCK8결과현시,Ad-PL-PPT-E1A감염후,가회복PC3M세포렬해액대인외주혈단개핵세포적억제작용。결론성공제비화감정료전렬선암특이성면역용류쌍공능선병독Ad-PL-PPT-E1A,병재체외증실료기구유용류화면역적쌍중공능。
Objective To construct a prostate cancer specific oncolytic adenovirus armed with a fusion protein gene , PSA-IZ-CD40L, and to evaluate its oncolytic efficiency and immune activation ability in vitro.Methods Prostate Specific Antigen (PSA) gene, CD40L-N and CD40L-C genes were obtained from cDNA of LNCaP cells and Jurkat cells using poly-merase chain reaction (PCR) or nested-PCR, respectively.PSA,Linker,CD40L-N and CD40L-C were linked sequentially to generate fusion protein gene PSA-IZ-CD40L (PL) by overlapping PCR.Then, prostate specific oncolytic adenovirus PL-carrying gene, Ad-PL-PPT-E1A,was constructed using the oncolytic adenovirus system , which was based on Adeasy sys-tem.PC3M cells were infected by Ad-PL-PPT-E1A at serial multiplicity of infection (MOI), and the apoptosis was detec-ted by flow cytometry at several time points post-infection.For immune activation detection , PC3M cells were infected with Ad-PL-PPT-E1A at a MOI of 50, and the cell lysate was collected at 48 h post-infection.Peripheral blood mononuclear cells derived (PBMCs) from healthy donors were stimulated by the lysate from PC 3M cells or Ad-PL-PPT-E1A infected PC3M cells before proliferation was assayed using cell counting kit-8 (CCK8).Results Fusion protein gene, PSA-IZ-CD40L, was successfully constructed and cloned into the prostate cancer specific adenovirus to generate Ad -PL-PPT-PL. The expression of E1A and PL protein could be detected by reverse transcription PCR and Western-blotting.Cytopathic effect was observed in PC3M cells infected with Ad-PL-PPT-E1A.Furthermore, the apoptosis rate reached 70.67% ± 2.98%at 48 h post-infection with 200 MOI Ad-PL-PPT-E1A.Compared with the lysate of PC3M cells, that from Ad-PL-PPT-E1A infected cells could promote the proliferation of PBMCs .Conclusion We have constructed a prostate cancer spe-cific oncolytic adenovirus armed can fusion protein gene PL , Ad-PL-PPT-E1A, which could kill PC3M cells effectively and enhance the proliferation of PBMCs in vitro.