小鼠血清甲状腺激素水平与免疫功能的衰老变化

利用放射免疫测定法和免疫功能指标的检测方法研究了 2 0月龄老年小鼠血清甲状腺激素水平和免疫功能的衰老变化 ,并用外源性甲状腺激素胃内给药的方法探讨了甲状腺机能和免疫功能变化间的因果关系 .结果证明 ,老年期甲状腺机能和免疫功能都有明显的衰退变化 ,且二者间存在有明显的因果关系 .甲状腺机能衰退导致免疫功能紊乱可能是机体衰老的基本过程之一     

Piezoelectric immunoassay of thyroidal triiodothyronine

A re-utilizable piezoelectric crystal (PC) immunosensor for thyroidal triiodothyronine (T3) has been developed. The crystal was coated with protein A and then reacted with T3 antibody. T3 could be detected in the range of 0.5×10⁻⁶ g/L to 10.0×10⁻⁶g/L by the, system. Crystal was regenerated by saturating with T3 and subsequent binding of a new anti-T3 antibody layer. The T3 assay could be repeated up to 5 times using each crystal. Supported by the National Natural Science Foundation of China Zha Hongying: born May, 1969, Ph. D.     

抗人凝血VIII因子的单克隆抗体制备及其鉴定

经凝胶过滤和亲和层析分离得到的人抗血友病A因子——VIII因子抗原VIII:CAg,在用一期法和火箭免疫电泳证实其纯度后,免疫Balb/c小鼠和包被免疫测定板。采用常规鼠杂交瘤技术经间接ELISA法筛选、克隆化得到四个稳定分泌抗VIII:C的单克隆抗体的细胞株,即DC8,DE4,DE7和DE8,腹水效价为1:1×10~4～1:1×10~5,一期法抑制反应表明,单克隆抗体对VIII:C活性有显著的抑制作用,但其抑制是不完全的,对抗体进行了纯化及分析,并将单抗用于血友病A多态性的分析。     

乙肝疫苗预防接种的临床观察分析

本文对新入校大学生及全校部分教职工及子女共985例进行了计划免疫及预防接种，接种后抗体阳转者857例，阳性率为87％，结果表明：此方法为预防乙型肝炎的最理想方法。     

PMEPA1蛋白的原核表达、纯化及其抗体制备

为了从蛋白水平上检测前列腺跨膜蛋白PMEPA1(prostate transmembrane protain,androgen induced 1)在细胞内的表达和功能,构建了原核表达重组质粒pTrcHisA-PMEPA1和pGEX4T-2-PMEPA1,转化大肠杆菌BL21-RIPL后,IPTG诱导蛋白表达,分别用Ni-NTA和谷胱甘肽琼脂糖凝胶层析柱纯化蛋白。用His-PMEPA1免疫兔子制备抗体,并用GST-PMEPA1对抗体进行纯化。免疫印迹检测显示抗体能够特异识别细胞中内源PMEPA1蛋白。     

Anti-CD44 mAb remodels biological behaviors of spheroid cells with stemness from human ovarian cancer cell line SKOV-3

There is accumulating evidence that cancer stem cells (CSCs) play an important role in tumor progression. Novel strategies targeting CSCs have been widely researched. In the present study, we explored whether such CSCs existed in human ovarian cancer (OVCA) cell line and whether anti-CD44 antibody had effects on such subpopulation. We isolated and identified spheroid cells from SKOV-3. Then we used A3D8, an anti-CD44 mAb to treat spheroid cells with so-called "stemness". Effects of A3D8 on spheroid cells’ biological behaviors were examined. Our findings showed that there was a small subpopulation that had so-called "stemness" in SKOV-3 cell line. Against spheroid cells, A3D8 can (1) inhibit cell proliferation; (2) change cell cycle distribution and expression of p21, CDK2 and cyclinA; (3) enhance cisplatin (DDP)-induced apoptosis; (4) promote cell differentiation; (5) inhibit clone formation efficiency; (6) reduce invasive efficacy; (7) inhibit tumorigenicity. Thus, to sum up points which we have just showed, spheroid cells isolated from SKOV-3 can be used as an appropriate in vitro model for relevant study of human ovarian CSCs. And our results reasoned that anti-CD44 therapy may become a potential promising strategy for OVCA treatment.     

抗鱼卵透明带单克隆抗体淋巴细胞杂交瘤的建立及初步鉴定

详细介绍了抗鱼（花鲢Anstichthysnobilis）卵透明带单克隆抗体淋巴细胞杂交瘤的制备及鉴定方法，用佛氏佐剂乳化热溶花鲢鱼卵透明带，然后免疫雌性BALB／C小鼠，取其脾细胞与骨髓瘤Sp2／0融合产生杂交瘤，经3次再克隆后，用间接ELISA方法筛选出一株抗鱼卵透明带的单克隆抗体杂交瘤，经免疫双扩散试验测得该种单克隆抗体为IgG1，经过染色体检查知其染色体数目在86～108之间，为93.6±3.81，杂交瘤细胞染色体经检查发现有中间和亚中着丝点染色体，符合杂交细胞染色体特征。