4 research outputs found

    Study on melting curve analysis for genotyping

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    熔解曲线分析法(Meltingcurveanalysis)是一种PCR后产物分析技术,具有操作简单、结果判断直观等特点,已经被广泛用于突变扫描、甲基化检测等研究。熔解曲线分析技术可分为探针熔解曲线(Probemeltingcurve)和荧光染料熔解曲线(Fluorescentdyemeltingcurve)两大类。探针熔解曲线利用探针与不同的靶序列杂交后形成的双链DNA熔点(Meltingtemperature,Tm)的差异来区分不同的靶序列,是实现多重实时检测的重要途径之一。但难点在于探针设计和如何使一条探针能同时高效率结合多种靶序列,并且具有多个可区分的熔点峰;荧光染料熔解曲线无需探针设计...Melting curve analysis is a straightforward, simple and widely-used PCR methed for genotyping and methylation. Melting curve analysis for multiplex PCR detection can be divided as: (1) probe and (2) fluorescent dye melting curve. Probe melting curve is used of single probe to difference target sequence forming different double-stranded DNA with distinguisheable melting temp...学位:理学硕士院系专业:生物医学研究院_化学生物学学号:3052008115271

    新型靶向治疗人表皮生长因子受体2过表达乳腺癌

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    乳腺癌(brEAST CAnCEr)是一种多基因参与、多步骤发生的高度异质性肿瘤,其病理和组织学分类相同的患者对同一治疗的疗效反应存在很大的差别。随着分子生物学的发展,乳腺癌诊断从传统的病理学和组织学分类,走向了以分子标志物为基础的预测方案。乳腺癌的分子特征更精确预测疾病复发风险,指导治疗用药选择。其中人表皮生长因子受体福建省科技计划项目(编号:2010Y0051); 福建省自然科学基金资助项目(编号:2012J01414

    Synthesis and identification of artificial complete antigen 25-hydroxyvitamin D_3

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    目的:合成25-羟基维生素d3人工完全抗原,并制备抗25-羟基维生素d3的特异性抗体。方法:将25-羟基维生素d3进行化学修饰加入羧基活性基团,合成具有半抗原结构特征的25-羟基维生素d3-半琥珀酸酯。采用碳二亚胺法,将25-羟基维生素d3-半琥珀酸酯,分别与牛血清白蛋白(bSA)和卵清蛋白(OVA)偶联,合成人工完全抗原25-羟基维生素d3-半琥珀酸酯-bSA和25-羟基维生素d3-半琥珀酸酯-OVA。通过紫外吸收光谱,SdS-PAgE和MAldI-TOf进行偶联鉴定。用25-羟基维生素d3-半琥珀酸酯-bSA免疫小鼠,获得抗25-羟基维生素d3抗体免疫血清。结果:25-羟基维生素d3-半琥珀酸酯与bSA的偶联比为(12±0.16)∶1,免疫小鼠后获得高效价(效价为6.25x10-4)的抗体,且标准品浓度在37.5~600 ng/Ml范围具有显著的竞争性线性关系,检测的灵敏度为37.5 ng/Ml。结论:成功合成了25-羟基维生素d3人工完全抗原,制备出25-羟基维生素d3的抗体且其线性关系显著,灵敏度较高,为进一步研制检测25-羟基维生素d3的试剂盒奠定了基础。AIM: To synthesize the 25-hydroxyvitamin D3 artificial complete antigen and to prepare the specific antibody against 25-hydroxyvitamin D3.METHODS: The active group carboxyl was introduced into 25-hydroxyvitamin D3 and formed 25-hydroxyvitamin D3-hemisuccinate which possessed the structure of the hapten by chemical modification.The EDC method was applied to conjugate 25-hydroxyvitamin D3-hemisuccinate to bovine serum albumin as an artificial immunogen.The coating antigen 25-hydroxyvitamin D3-hemisuccinate-OVA was obtained in the same way.Ultraviolet,SDS-PAGE and MALDI-Tof were used to identify 25-hydroxyvitamin D3-hemisuccinate-BSA.RESULTS: BALB/c mice were immunized with 25-hydroxyvitamin D3-hemisuccinate-BSA to generate the polyclonal antibody of the 25-hydroxyvitamin D3 worth high titer and the immunogen,25-hydroxyvitamin D3-hemisuccinate-BSA,was successfully prepared with coupling ratio(12±0.16)∶1(N=3) coupling.CONCLUSION: The high titer and good sensitivity of anti-25-hydroxyvitamin D3 antibody are produced in sera immunized BALB/c mice,which made it possible to develop a clinical diagnostics for illness

    生物样本信息资源库的国内外研究进展

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    标准化的生物样本信息资源库是基因组、功能基因组等生命科学研究的关键源头,是将科研成果快速转化为医疗产品,应用到临床的重要保证,也是生物医药研发自主创新体系中至关重要的环节。英国、加拿大、挪威、瑞典、冰岛等国家早已建立了自己的生物样本信息资源库。2009年美国国家癌症研究所(National Cancer Institute,NCI)筹划建立了美国第一个国家级的人类癌症生物样本信息资源库(Th
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