胰腺癌黏蛋白4基因修饰的树突状细胞疫苗构建及对胰腺癌细胞的免疫效应

Objective To obtain the dendritic cells ( DC)-based vaccine modified by adenovirus containing MUC4 gene , and evaluate the anti-tumor efficacy of DC vaccine to pancreatic tumor cells. Meth-ods The mRNA sequence of tumor associated antigen, MUC4, was obtained from NCBI, and MUC4 se-quence was acquired through the restriction enzyme sites and over lap PCR, then subcloned into adenovirus plasmid to create recombinant adenovirus ( rAd-MUC4) . The DCs were infected by rAd-MUC4 virus and then stimulated the lymph cells from the same donor to induce MUC4 specific cytotoxicity T lympbocytes ( CTL) . The efficacy of CTL was analyzed by LDH releasing assay. Elispot was used to detect the IFN-γ release. Results The recombinant adenovirus containing MUC4 ( sv12) gene was obtained. The MUC4-induced CTL could specifically kill the Capan-1 pancreatic tumor cells [ ( 13. 7±6.0)% , ( 21.4± 4. 7)% , (36.1±9. 5)% at ratios of 10: ,20: ,40: ] , higher than MCF-7 and Bxpc-3 cells respectively, P < 0. 05. The spots number of CTL induced by rAd-MUC4 was ( 139.1±23.3) , more than GFP and PBS control group,P<0.05. Conclusion The Muc4 gene modified DC vaccine could induce the proliferation of CTL, which provided a significant cytotoxicity to HLA-matched MUC4 positive tumor cell lines in vitro.     

紫杉醇抗癌研究荟萃

多烯紫杉醇卡铂与紫杉醇卡铂可用于卵巢癌一线化疗一般认为,含铂类和紫杉烷的药物是治疗卵巢癌的标准化疗。英国研究人员将多烯紫杉醇卡铂(Ⅰ组)与紫杉醇卡铂(Ⅱ组)用于1077例Ⅰc-Ⅳ期卵巢上皮癌或原发性腹膜癌的一线化疗。中数为23个月的随访显示,两组的无进展生存时间(progression—freesurvival,PFS)相似。Ⅰ组和Ⅱ组2年整体生存率(overallsurvivalrates,OSR)分别是62.4%和68.9%。但Ⅰ组3～4级粒细胞减少及由此引起的并发症呈统计学意义增多,尽管其骨髓抑制并未影响用药剂量或患者生命安全。两组综合生活质量(Globalqualityoflife)相似(JNatlCancerInst,2004,96:1682-1691)。     

Co-localization of histamine and norepinephrine in sympathetic ganglia and exocytosis of endogenous histamine from cardiac sympathetic nerve endings of macaca mulatto monkey

AIM To provide the evidence about localization, biosynthesis, metabolism and release of histamine from the cardiac sympathetic nerve terminals, and endogenous sympathetic histamine could inhibit itsel frelease from the nerve terminal through the presynaptic histamine H3 receptor. METHODS Using double-labeled immunohistochemistry to observe the co-localization of histamine and NE in the superior cer-vical ganglia (SCG) of macaca mulatto monkey; Different-speed centrifugation to obtain the cardiac sympathetic nerve terminal model (the cardiac synaptosomes), spectrofluorometer and ELISA techniques to detect the release of histamine from the cardiacsynaptosomes. RESULTS ( 1 ) The coexistence of histamine and norepinephrine immunoreactivities was identified in the same neuron within SCG of macaca mulatto monkey. (2) Depolarization of macaca mulatto monkey cardiac synaptosomes with 50 mmol/L potassium caused the release of endogenous histamine,     

HIV削弱CD8T细胞对其它病原体的应答

据Mdescape．com 8月11日报道（原载J Infect Dis2006：194：391—400），HIV和HCV联合感染的病人对由CD28细胞刺激CD8T细胞的应答比单独感染HCV的病人应答减少。     

螺旋体传染病

梅毒螺旋体荧光定量PCR检测方法的建立和初步临床应用；钩端螺旋体病患的临床观察及护理；梅毒螺旋体外膜蛋白Gpd在Hela细胞中的表达及鉴定；重组钩端螺旋体外膜蛋白酶联免疫吸附（ELISA）检测方法的建立；问号钩端螺旋体鞭毛相关基因flhA、flhB2和fliR的克隆及原核表达系统的构建；浙江省首次在蜱中检测到莱姆病螺旋体DNA片段。[编按]     

中西医结合治疗重症病毒性肝炎30例

院自 1 994年至 2 0 0 2年共收治重症病毒性肝炎 3 0例 ,经中西医结合治疗 ,病死率由 1 994年前单纯西医治疗的 80 %降到 46.7%。兹将临床资料介绍如下。1　一般资料本组病例男 2 4例 ,女 6例 ;年龄 1～ 5岁 5例 ,2 1～ 49岁 1 4例 ,5 0～ 5 8岁 1 1例 ;3 0例临床与生化检查均符合 1 994年 1 1月南宁会议制定的病毒性肝炎防治方案的诊断标准 ,其中急性重症肝炎 6例 ,亚急性重症肝炎 2 0例 ,慢性重症肝炎 4例 ;主要并发症有肝性昏迷 1 6例 ,上消化道出血 2例 ,继发感染9例 ,脑水肿 1 0例。2　治疗方法急黄型 :黄疸急剧加深 ,身目橘黄 ,小便短…     

用氮源调控的FLD1启动子开发在毕赤酵母中生产外源蛋白的高细胞密度流加补料培养技术

构建了一株可在P．pastoris甲醛脱氢酶1基因的启动子（PFLD）转录控制下，表达稻根霉脂肪酶基因的毕赤酵母重组菌，以研究该表达系统可否用于无需甲醇诱导的高细胞密度流加补料培养技术生产重组蛋白。使用PFLD系统开发了简单可靠的流加补料技术，在诱导期分别用甲胺和山梨醇作为氮源和碳源。在3种恒定生长速率下分别进行3项流加补料发酵试验，     

靶向皮肤树突状细胞可能是有应用前景的疫苗策略

据Medscape．com6月13日报道（原载Immunity2006：24：643—656），慢病毒侵入表皮会直接转染皮肤源性树突状细胞，使编码的抗原出现有效且持久的提呈。     

人类白细胞抗原-G蛋白在星形细胞肿瘤组织的表达

胶质瘤存在免疫耐受。而人类白细胞抗原-G(HLA-G)是一种非经典人类白细胞抗原,有研究表明HLA-G作为免疫耐受分子,在肿瘤免疫逃逸中可能具有重要作用。我们采用免疫组织化学、蛋白印迹实验观察HLA-G蛋白在星形细胞性肿瘤表达情况。     

外阴血管肌纤维母细胞瘤1例

血管肌纤维母细胞瘤（angiomyofibroblastoma AMFB）为罕见的外阴软组织肿瘤，来源于盆腔软组织间叶细胞，多发生于中年妇女的生殖道，以外阴最多见：临床上大多表现为无痛性肿块，在术前常难以做出明确诊断，需要通过病理学检查方能确诊。现将我科发现1例报道如下。