肿瘤Ki-67抗原HLA-A2限制性细胞毒性T淋巴细胞表位的鉴定

Objective To identify the HLA-A2-restricted CTL epitopes encoded by antigen segment of Ki-67 for preparation of tumor vaccines. Methods Two epitope prediction databases ( BIMAS and SYFPEITHI) were used to predict the epitopes of Ki-67, and 7 peptides were synthesized as the candi-dates. The prediction was evaluated by peptide-binding test. ELISPOT was used to inspect the IFN-γ secre-ted by CTLs in order to reflect the immunogenicity of the peptides. Results The purities of synthetic pep-tides and positive control peptide were all above 95%. Peptide-binding test displayed that LQGETQLLV (280-288) of Ki-67 could bind with HLA-A2 molecule more strongly. ELISPOT assay displayed that LQGETQLLV could induce activation of specific CTLs. Conclusion LQGETQLLV (280-288) might be the HLA-A2-restricted CTL epitope of Ki-67 antigen.     

肿瘤Ki-67抗原HLA-A2限制性细胞毒性T淋巴细胞表位的鉴定

Objective To identify the HLA-A2-restricted CTL epitopes encoded by antigen segment of Ki-67 for preparation of tumor vaccines. Methods Two epitope prediction databases ( BIMAS and SYFPEITHI) were used to predict the epitopes of Ki-67, and 7 peptides were synthesized as the candi-dates. The prediction was evaluated by peptide-binding test. ELISPOT was used to inspect the IFN-γ secre-ted by CTLs in order to reflect the immunogenicity of the peptides. Results The purities of synthetic pep-tides and positive control peptide were all above 95%. Peptide-binding test displayed that LQGETQLLV (280-288) of Ki-67 could bind with HLA-A2 molecule more strongly. ELISPOT assay displayed that LQGETQLLV could induce activation of specific CTLs. Conclusion LQGETQLLV (280-288) might be the HLA-A2-restricted CTL epitope of Ki-67 antigen.     

表达端粒酶逆转录酶siRNA的溶瘤腺病毒对裸鼠肾癌移植瘤的治疗作用

Objective To investigate the antitumor effect of oncolytic adenovirus armed with small interference RNA targeting hTERT gene for renal cancer therapy. Methods Nude mice were divid-ed randomly into 4 groups (8 mice/group),and were treated by intratumoral injections of ZD55-hTERT ( an oncolytic adenovirus armed with small interference RNA targeting hTERT gene) ,ZD55-EGFP ( an on-colytic adenovirus) and Ad-hTERT (replication-defective adenovirus armed with small interference RNA targeting hTERT gene) with three consecutive daily at 7 × 108 pfu/day or treated with PBS as a control. The expression of E1A and hTERT, and apoptosis of tumor xenografts were assessed by immunohistochemi-cal technique at the 7th day after injections. The tumor volume was measured at the 50th day after injec-tions. Results The tumor volume in ZD55-hTERT treatment group ( 124.1±27.5) was significantly less than that in ZD-EGFP (499.8±77.1 ) and Ad-hTERT ( 609.0±102.5 ) treatment groups. The E 1A pos-itive expression in ZD55-hTERT treatment group was significantly higher than that in Ad-hTERT treatment group. The hTERT positive expression in ZD55-hTERT treatment group was significantly lower than that in Ad-hTERT treatment group. ZD55-hTERT treatment of tumor xenografts resulted in an increased apoptotie cell death as compared with ZD55-EGFP and Ad-hTERT treatment. Conclusion The antitumor effect of ZD55-hTERT was more potent than oneolytie adenovirus ZD55-EGFP and Ad-hTERT.     

永久性人工肝门的系统护理

随着整体护理工作的不断扩展 ,对患者实施心理、身体、社会全面护理日趋显得更加重要 ,而且护理效果更加明显。我院胃肠外科自 1 996年 1月— 2 0 0 0年 1 2月共收治直肠癌患者 2 32例 ,其中 1 39例行腹会阴联合切除加腹部永久性肠造口术 ,并实施系统护理 ,现将具体措施介绍如下。1　一般资料本组 1 39例肠造口患者中 ,男 74例 ,女 6 5例 ;年龄 2 1～ 83岁 ,平均 5 8.3岁。2　护　　理2 1　心理护理 :大多数患者对肠造口不能接受 ,认为一旦肠造口后将影响正常的生活和工作。医务人员要根据患者的心理特点 ,耐心细致地做好患者的思想工作 ,…     

表达端粒酶逆转录酶siRNA的溶瘤腺病毒对裸鼠肾癌移植瘤的治疗作用

Objective To investigate the antitumor effect of oncolytic adenovirus armed with small interference RNA targeting hTERT gene for renal cancer therapy. Methods Nude mice were divid-ed randomly into 4 groups (8 mice/group),and were treated by intratumoral injections of ZD55-hTERT ( an oncolytic adenovirus armed with small interference RNA targeting hTERT gene) ,ZD55-EGFP ( an on-colytic adenovirus) and Ad-hTERT (replication-defective adenovirus armed with small interference RNA targeting hTERT gene) with three consecutive daily at 7 × 108 pfu/day or treated with PBS as a control. The expression of E1A and hTERT, and apoptosis of tumor xenografts were assessed by immunohistochemi-cal technique at the 7th day after injections. The tumor volume was measured at the 50th day after injec-tions. Results The tumor volume in ZD55-hTERT treatment group ( 124.1±27.5) was significantly less than that in ZD-EGFP (499.8±77.1 ) and Ad-hTERT ( 609.0±102.5 ) treatment groups. The E 1A pos-itive expression in ZD55-hTERT treatment group was significantly higher than that in Ad-hTERT treatment group. The hTERT positive expression in ZD55-hTERT treatment group was significantly lower than that in Ad-hTERT treatment group. ZD55-hTERT treatment of tumor xenografts resulted in an increased apoptotie cell death as compared with ZD55-EGFP and Ad-hTERT treatment. Conclusion The antitumor effect of ZD55-hTERT was more potent than oneolytie adenovirus ZD55-EGFP and Ad-hTERT.     

转染增殖细胞核抗原肽表位融合白细胞介素-18基因的树突状细胞对T细胞增殖的影响

目的 观察转染增殖细胞核抗原(PCNA)肽表位、白细胞介素(IL)-18融合基因的树突状细胞(DCs)对T淋巴细胞增殖的诱导作用.方法 实验分为DCs组、空载体组、PCNA肽表位基因转染组、PCNA肽表位融合IL-18基因转染组共4组,分别将空质粒(pIPES-EGFP)、PCNA肽表位质粒[pIPES-EGFP-PCNA(6)]和PCNA肽表位融合IL-18基因质粒[pIRES-EGFP-PCNA(6)/IL-18]通过脂质体转染DCs.每组按照DCs∶T淋巴细胞1∶1、1∶10、1∶20、1∶40、1∶80的比例分为4个浓度梯度,将DCs与T淋巴细胞共培养.采用CCK-8法检测T细胞增殖.结果 各组DCs均能刺激T淋巴细胞增殖,DCs∶T为1∶10时,转染pIPES-EGFP-PCNA(6)/IL-18的DCs刺激指数为2.62,优于DCs组(1.70)、空载体组(1.78)和pIPES-EGFP-PCNA(6)组(1.93).结论 转染pIRES-EGFP-PCNA(6)/IL-18的DCs刺激T淋巴细胞增殖的作用最强,DCs:T为1∶10时最佳.

Abstract：

Objective To investigate the proliferation activity of T lymphocytes induced by dendritic cells modified by proliferating cell nuclear antigen (PCNA)-Epitope and interleukin (IL)-18 genes.Methods The experiment was divided into four groups, including DCs group, empty vector group, PCNAEpitope transfection group and PCNA-Epitope plus IL-18 gene group, and every group was assigned to four EGFP), PCNA-Epitope plasmid [pIRES-EGFP-PCNA(6)] and plasmid loaded PCNA-Epitope and IL-18 gene [pIRES-EGFP-PCNA(6)/IL-18] were transfected into peripheral blood-derived dendritic cells, then cocultured with T lymphocytes respectively. T lymphocytes proliferation was determined by CCK-8 assays.Results The index of stimulation of the pIRES-EGFP-PCNA(6)/IL-18 group was 2. 62 when the ratio transfection group (1. 93). Conclusion DCs treated with the PCNA-Epitope and IL-18 gene could stimulate T lymphocytes proliferation more effectively,and the optimal rio of DCs:T was 1:10.     

胃肝样腺癌1例报道并文献复习

正胃肝样腺癌(hepatoid adenocarcinoma of the stomach,HAS)是原发于胃黏膜同时具有腺癌和肝细胞癌样分化特征的一种特殊类型胃癌。临床上少见,容易漏诊、误诊。笔者在复习文献的基础上报告1例,望可为HAS的诊治提供参考。1病例资料患者×××,男,43岁,因"上腹部隐痛不适半月余"于2013年1月14日入徐州医学院附属医院。患者半月前无明显诱因出现上腹部隐痛不适,伴腹胀、恶心、呕吐,呕吐物为胃内容物。无畏寒、发热,无呕血、黑便。入院查体:神志清,精神可,皮肤黏膜无黄染,浅表淋巴结无肿大,心肺(-),腹平软,未     

FBXO22对结肠癌细胞侵袭迁移的影响及相关机制

目的： 探讨结肠癌细胞FBXO22基因表达沉默后对细胞侵袭迁移的影响及其相关分子机制。方法：利用siRNA-Ctrl和siRNA-FBXO22小干扰片段转染结肠癌SW620和HCT116细胞,干扰FBXO22基因表达,Western blot 检测细胞转染效率,Transwell细胞迁移实验分析干扰FBXO22对细胞侵袭迁移的影响,Western blot检测细胞侵袭相关蛋白MMP-2、MMP-9和MDM2水平的变化。结果：转染FBXO22 siRNA后,结肠癌SW620和HCT116细胞FBXO22的表达量明显下降、细胞侵袭转移能力降低,MMP-2和MMP-9蛋白表达水平明显降低,而MDM2蛋白表达水平上调。结论： FBXO22与结肠癌细胞侵袭迁移相关,其机制可能通过调节MMP-2和MMP-9表达而实现。     

15例胃肠道类癌的诊治分析

目的 总结胃肠道类癌的诊断和治疗经验.方法收集15例胃肠道类癌患者的临床资料,对其临床特征、诊疗过程进行总结分析.结果 本组15例胃肠道类癌患者,中位年龄57岁;男性10例,女性5例;其中胃类癌9例(60.0%),直肠类癌5例(33.3%),小肠类癌1例(6.7%).主要临床表现为腹痛9例(60.0%),腹胀4例(26.7%),大便次数增多4例(26.7%).6例接受CT检查,其中5例发现原发病灶或转移灶,1例未见明显异常.15例均行内镜检查及活检,其中11例经活检明确,余4例确诊前分别误诊为腺癌、间质瘤、息肉.本组患者9例行外科手术治疗,其中2例行局部切除术,6例行根治手术,1例伴肝脏转移者行姑息性手术、肝脏药物注射术和肝转移癌微波消融术;5例患者行内镜治疗;1例放弃治疗.结论 胃肠道类癌临床表现无特异性,诊断困难,内镜取材病理活检是诊断本病的重要方法.手术及内镜切除是治疗胃肠道类癌最为有效的治疗手段.     

经括约肌间瘘管结扎术治疗肛瘘的疗效及对肛门功能的影响

目的观察经括约肌间瘘管结扎术治疗肛瘘的疗效及对肛门功能的影响。方法选取2012年1月-2017年12月徐州医科大学附属医院治疗的肛瘘患者65例,采用随机数字表法分为两组,观察组33例,对照组32例。对照组患者行瘘管切除术,观察组患者行经括约肌间瘘管结扎术。首次随访时,比较两组患者手术有效率;比较两组患者手术时间、住院时间、创口愈合时间;比较两组患者术前及术后1个月维克斯纳肛门失禁评分(Wexner)及视觉模拟评分(VAS);末次随访时,比较两组患者术后并发症发生情况。结果首次随访时,观察组手术有效率高于对照组(P0.05),术后并发症发生率低于对照组(P0.05),手术时间、住院时间、创口愈合时间均短于对照组(P0.05),术后1个月Wexner评分及VAS评分优于对照组(P0.05)。结论采用经括约肌间瘘管结扎术治疗肛瘘有效率高,能缩短手术时间、住院时间及创口愈合时间。