江浙沪籍汉族人HLA—DQB1遗传多态性分析

用ＰＣＲ－ＲＦＬＰ方法扩增了江浙沪籍汉族人群ＨＬＡⅡ类基因ＤＱＢ１基因的２第个外显子，扩增产物经ＨａｅⅢ，Ｂｓｐ１２８６１，ＢｓｓＨⅡ，ＳｓａⅠ，ＨａｅⅡ，，ＡｐａⅠ，ＨｐａⅡ，ＲｓａⅠ酶切分型，测定了江浙沪籍汉族人ＨＬＡⅡ类基因ＤＱＢ１的１６个等痊基因的分布频率。     

天花粉蛋白诱发人体免疫抑制中DQA1和DQB1等位基因的顺式互补受邻近

人类白细胞抗原ＨＬＡ－ＤＱ等位基因ＤＱＡ１＊０５０１和ＤＱＢ１＊０２０１以顺式和反式两种互补格局决定中药提物天花粉蛋白诱发人体免疫抑制中ＣＤ８介导型性状的表达。     

HLA DQ位点多样性模拟分析及其PCR—RFLP分型

选择２７个识别序列为４ｎｔ的限制性内切酶,通过计算机对最新获得的１９个ＤＱＡ１和３５个ＤＱＢ１等位基因第２外显子中的一段序列进行模拟酶切分析,根据酶切格局数目及各格局所代表的等位基因数的均衡性,确定酶的优先次序,在此基础上进行ＰＣＲ－ＲＦＬＰ模拟分析,确定最佳的酶组合。结果表明,分别采用４个和６个酶的组合,可有效鉴定ＤＱＡ１和ＤＱＢ１等位基因。同时通过比较分析ＤＱＢ１各等位基因核苷酶位点的变异系数     

一类椭圆型方程Cauchy问题的正则化(英文)

ＲＥＧＵＬＡＲＩＺＡＴＩＯＮＯＦＡＣＡＵＣＨＹＰＲＯＢＬＥＭＦＯＲＡＥＬＬＩＰＴＩＣＥＱＵＡＴＩＯＮ＊ＸｕＤｉｎｇｈｕａ１）ＬｉＭｉｎｇｚｈｏｎｇ２）１）ＤｅｐａｒｔｍｅｎｔｏｆＦｕｎｄａｍｅｎｔａｌＣｏｕｒｓｅｓ,ＥａｓｔＣｈｉｎａＧｅｏｌｏｇｉｃ...     

水稻花发育相关MADS-box基因的克隆

以水稻幼穗总ＲＮＡ为模板,利用３′－ＲＡＣＥ克隆了８个接近于全长的水稻ＭＡＤＳ－ｂｏｘ 基因的ｃＤＮＡ．在ＧｅｎＢａｎｋ 的数据库中查询表明,其中２个ＦＤＲＭＡＤＳ１,ＦＤＲＭＡＤＳ２分别与已报道的水稻ＭＡＤＳ－ｂｏｘ 基因Ｏｓ－ＭＡＤＳ５和ＯｓＭＡＤＳ４５有极高的同源性,另外６个为新的尚未见报道的水稻ＭＡＤＳ－ｂｏｘ 基因．系统进化树分析表明ＦＤＲＭＡＤＳ１,ＦＤＲＭＡＤＳ２和ＦＤＲＭＡＤＳ４可能与Ｃ组基因的功能相关;ＦＤＲＭＡＤＳ３,ＦＤＲＭＡＤＳ６和ＦＤＲ－ＭＡＤＳ７可能与Ａ 组基因的功能相关     

水稻花发育相关MADS—box基因的克隆

以水稻幼穗总ＲＮＡ为模板,利用３’－ＲＡＣＥ克隆了８个接近于全长的水稻ＭＡＤＳ－ｂｏｘ基因ｃＤＮＡ。在ＧｅｎＢａｎｋ的数据库中查询表明,其中２个ＦＤＲＭＡＤＳ１,ＦＤＲＭＡＤ＃２分别与已报道的水稻ＭＡＤＳ－ｂｏｘ基因ＯＳＭＡＤＳ５和ＯｓＭＡＤ４５有极高的同源性。另外６个为新的未见报道的的水稻ＭＡＤＳ－ｂｏｘ基因。     

Clifford分析中一类二阶偏微分方程的Dirichlet问题(英文)

ＯＮＤＩＲＩＣＨＬＥＴＰＲＯＢＬＥＭＦＯＲＡＣＬＡＳＳＯＦＳＥＣＯＮＤＯＲＤＥＲＰＡＲＴＩＡＬＤＩＦＦＥＲＥＮＴＩＡＬＥＱＵＡＴＩＯＮＩＮＴＨＥＣＬＩＦＦＯＲＤＡＮＡＬＹＳＩＳ＊ＬｉＳｈｅｎｇｘｕｎＱｉｕＪｉｑｉｎｇＤｅｐａｒｔｍｅｎｔｏｆＦｕｎｄａ...     

BIOGENESIS OF THYLAKOID MEMBRANES WITH RECONSTRUCTION OF CHLOROPHYLL-PROTEIN COMPLEXES IN DELETION-MUTANT OF ORF469 IN BLUE-GREEN ALGA

ＢＩＯＧＥＮＥＳＩＳＯＦＴＨＹＬＡＫＯＩＤＭＥＭＢＲＡＮＥＳＷＩＴＨＲＥＣＯＮＳＴＲＵＣＴＩＯＮＯＦＣＨＬＯＲＯＰＨＹＬＬ－ＰＲＯＴＥＩＮＣＯＭＰＬＥＸＥＳＩＮＤＥＬＥＴＩＯＮ－ＭＵＴＡＮＴＯＦＯＲＦ４６９ＩＮＢＬＵＥ－ＧＲＥＥＮＡＬＧＡＷｕＱｉｎ...     

ULTRASONIC FREQUENCY SHIFT OF STIMULATED BRILLOUIN SCATTERING STUDIED BY AN OPTICAL HETERODYNE METHOD

ＵＬＴＲＡＳＯＮＩＣＦＲＥＱＵＥＮＣＹＳＨＩＦＴＯＦＳＴＩＭＵＬＡＴＥＤＢＲＩＬＬＯＵＩＮＳＣＡＴＴＥＲＩＮＧＳＴＵＤＩＥＤＢＹＡＮＯＰＴＩＣＡＬＨＥＴＥＲＯＤＹＮＥＭＥＴＨＯＤＧａｏＤｕｎｔａｎｇ１）ＬｅｉｄｅｒｅｒＰ２）（１）Ｄｅｐａｒｔｍｅｎ...     

关于非线性抛物型方程组的两类边值问题

ＯＮＴＷＯＫＩＮＤＳＯＦＢＯＵＮＤＡＲＹＶＡＬＵＥＰＲＯＢＬＥＭＦＯＲＮＯＮＬＩＮＥＡＲＰＡＲＡＢＯＬＩＣＳＹＳＴＥＭＯＦＥＱＵＡＴＩＯＮＳ＊ＸｕＫｅｍｉｎｇＹａｎｇＧｕａｎｇｗｕＤｅｐａｒｔｍｅｎｔｏｆＦｕｎｄａｍｅｎｔａｌＣｏｕｒｓｅｓ,Ｈｅｂｅ...     

天花粉蛋白诱发人体免疫抑制中DQA1和DQB1等位基因的顺式互补受邻近DQ基因的调变

人类白细胞抗原HLA－DQ等位基因DQA1*0501和DQB1*0201以顺式和反式两种互补格局决定中药提取物天花粉蛋白诱发人体免疫抑制中CDS介导型性状的表达．研究工作进一步揭示其中的顺式互补受另一单元型上DQB1等位基因的调变．其中起正向调变作用的等位基因是DQB1*0302，0303，0401，0601；发挥负向调变作用的等位基因是DQB1*0201，0501，0602．以上现象表明天花粉蛋白诱发人体免疫应答的遗传控制呈现十分复杂的格局．     

Identification of susceptibility loci for insulin-dependent diabetes mellitus by trans-racial gene mapping

INSULIN-dependent (type I) diabetes mellitus (IDDM) follows an autoimmune destruction of the insulin-producing beta-cells of the pancreas. Family and population studies indicate that predisposition is probably polygenic. At least one susceptibility gene lies within the major histocompatibility complex and is closely linked to the genes encoding the class II antigens, HLA-DR and HLA-DQ (refs 3, 4). Fine mapping of susceptibility genes by linkage analysis in families is not feasible because of infrequent recombination (linkage disequilibrium) between the DR and DQ genes. Recombination events in the past, however, have occurred and generated distinct DR-DQ haplotypes, whose frequencies vary between races. DNA sequencing and oligonucleotide dot-blot analysis of class II genes from two race-specific haplotypes indicate that susceptibility to IDDM is closely linked to the DQA1 locus and suggest that both the DQB1 (ref. 7) and DQA1 genes contribute to disease predisposition.     

HLA-DQ beta gene contributes to susceptibility and resistance to insulin-dependent diabetes mellitus

Over half of the inherited predisposition to insulin-dependent diabetes mellitus maps to the region of chromosome 6 that contains the highly polymorphic HLA class II genes which determine immune responsiveness. Analysis of DNA sequences from diabetics indicates that alleles of HLA-DQ beta determine both disease susceptibility and resistance, and that the structure of the DQ molecule, in particular residue 57 of the beta-chain, specifies the autoimmune response against the insulin-producing islet cells.     

HLADQB1＊03、DRB1＊13与新疆维吾尔族、汉族HPV感染和宫颈癌的相关性研究

运用PCR及PCR-SSP技术检测HPV16 DNA和HLA DQB1＊03、DRB1＊13等位基因在新疆维族、汉族ISCC和对照组织中的分布,探讨HLA DQB1＊03,DRB1＊13等位基因与HPV16感染和ISCC的相关性及在新疆维族、汉族正常人群中的分布。结果显示：HLA DQB1＊03等位基因在维族ISCC和HPV16阳性的ISCC中的分布频率高于维族对照组,差异具有统计学意义（χ2=6.166,P〈0.05;χ2=4.336,P〈0.05）;在维族正常人群中的分布频率低于汉族正常人群,差异具有统计学意义（χ2=14.923,P〈0.05）。HLA DRB1＊13等位基因在维族、汉族ISCC和HPV16阳性ISCC分布频率与对照组比较,差异均无统计学意义;在维族正常人群中的分布频率与汉族正常人群比较,差异无统计学意义。提示HLA DQB1＊03等位基因可能是维族ISCC的遗传易感基因。     

Localization of type 1 diabetes susceptibility to the MHC class I genes HLA-B and HLA-A

The major histocompatibility complex (MHC) on chromosome 6 is associated with susceptibility to more common diseases than any other region of the human genome, including almost all disorders classified as autoimmune. In type 1 diabetes the major genetic susceptibility determinants have been mapped to the MHC class II genes HLA-DQB1 and HLA-DRB1 (refs 1-3), but these genes cannot completely explain the association between type 1 diabetes and the MHC region. Owing to the region's extreme gene density, the multiplicity of disease-associated alleles, strong associations between alleles, limited genotyping capability, and inadequate statistical approaches and sample sizes, which, and how many, loci within the MHC determine susceptibility remains unclear. Here, in several large type 1 diabetes data sets, we analyse a combined total of 1,729 polymorphisms, and apply statistical methods-recursive partitioning and regression-to pinpoint disease susceptibility to the MHC class I genes HLA-B and HLA-A (risk ratios >1.5; P(combined) = 2.01 x 10(-19) and 2.35 x 10(-13), respectively) in addition to the established associations of the MHC class II genes. Other loci with smaller and/or rarer effects might also be involved, but to find these, future searches must take into account both the HLA class II and class I genes and use even larger samples. Taken together with previous studies, we conclude that MHC-class-I-mediated events, principally involving HLA-B*39, contribute to the aetiology of type 1 diabetes.     

HLA DRB1＊1501和DQB1＊0602与新疆维吾尔、汉族HPV感染及宫颈癌发生的相关性

探讨HLADRB1＊1501和DQB1＊0602与新疆维吾尔、汉族妇女HPV感染及宫颈癌发生的相关性。PCR-SSP和PCR检测287例浸润性宫颈癌（维族192例,汉族95例）及297例正常宫颈组织（维族203例,汉族94例）中DRB1＊1501和HLADQB1＊0602的分布频率和HPV16DNA。维族HPV16阳性NILM组中DRB1＊1501基因频率高于HPV16阴性NILM组（OR,2．222;95％CI,1．107—4．461;P=0．023）,差异有统计学意义;在维族ISCC组及HPV16阳性ISCC组中DQB1＊0602基因频率均低于对照组（OR,0．484;95％CI,0．324～0．722;P=0．000;OR,0．552;95％CI,0．360～0．845;P=0．006）,差异有统计学意义;汉族ISCC组中DRBl。1501等位基因及DRB1＊1501～DQB1＊0602单体型均低于对照组（分别为OR,0．305;95％CI,0．115～0．813;P=0．013和OR,0．274;95％CI,0．086—0．874;P=0．021）,差异有统计学意义。携带DRB1＊1501等位基因为新疆维族妇女HPV16易感基因。DQB1＊0602基因可能是新疆维族妇女宫颈癌的保护基因,而DRB1＊1501基因及DRB1＊1501～DQB1＊0602单体型则可能是新疆汉族妇女宫颈癌的保护基因。     

A combination of a particular HLA-DP beta allele and an HLA-DQ heterodimer confers susceptibility to coeliac disease

Coeliac disease is an autoimmune disease of the intestinal mucosa, elicited by ingestion of wheat gluten in genetically susceptible individuals. Susceptibility to coeliac disease has been associated with the serologically defined variants DR3 and DR7 of the class II antigens encoded by the HLA-D region. Three related class II antigens, each consisting of an alpha and a beta glycoprotein chain, have been identified and are designated HLA-DR, HLA-DQ, and HLA-DP. These highly polymorphic transmembrane proteins bind peptides derived from the processing of foreign antigens and present them to T lymphocytes; they also influence the specificity of the mature T-cell repertoire. The role of HLA-DP polymorphism in susceptibility has not been as fully explored as that of the other class II antigens because of the complexity of the primed lymphocyte typing (PLT) method for determining DPw specificities. Here we use a new DNA-based method of HLA-DP typing to analyse the distribution of DP beta alleles in a group of coeliac disease patients and healthy controls. Two specific DP beta alleles (DPB4.2 and DPB3) are increased in the patient population. Comparison of the DP beta sequences suggests that the polymorphic residues at position 69 and at 56 and 57 may be critical in conferring susceptibility. Further, the contribution of the susceptible DP beta alleles appears to be independent of linkage to the previously reported DR3 and DR7 markers for coeliac disease. The distribution of DQ alpha and beta alleles in patients suggests that a specific DQ heterodimer may be responsible for the observed DR associations. Individuals with both this DQ antigen and a specific DP beta allele are at increased risk for coeliac disease.     

中国恒河猴MHC Ⅰ型部分等位基因的分析

目的对中国恒河猴主要组织相容性复合体（MHC）I型部分基因进行携带情况调查与分析。方法采用序列特异性引物（PCR-SSP）分型方法对华南灵长类动物研究中心繁殖的30只谱系清晰的中国恒河猴（Macacamulatta）的32个MHC I型分子位点进行检测。结果采用的32对引物中,中国恒河猴可检出携带23个MHC I等位基因,但基因携带频率存在很大的差异,由3.57%至82.14%不等。结合遗传谱系分析,判断A1＊21和A2＊05之间以及B＊04和B＊30之间可能就是连锁的。结论中国恒河猴携带能控制病毒复制的MHC I型基因位点的频率较高,其基因携带频率与已发表的印度恒河猴携带频率存在明显差异。本研究为促进中国恒河猴在AIDS研究中的应用,以及为建立携带特定MHC I基因实验猴小种群提供了依据。     

New HLA DNA polymorphisms associated with autoimmune diseases

Certain class II determinants of the human histocompatibility locus antigens (HLA) have been implicated in the aetiology of several autoimmune diseases, including rheumatoid arthritis (RA) and insulin-dependent diabetes mellitus (IDDM). HLA-Dw4 was the first HLA determinant found to be significantly increased in RA patients compared with controls, while Dw4 and Dw3 were found to be significantly increased in IDDM patients. When the HLA-DR system was defined, RA patients were found to have an increased frequency of DR4 and IDDM patients an increased incidence of both DR4 and DR3 compared with controls. As the HLA-Dw specificities are narrower than the serologically defined DR specificities, it was of specific interest to the present study that Dw4, Dw10, Dw13, Dw14, Dw15 and DKT2 are included in DR4. We describe here new restriction fragment length polymorphisms (RFLPs) and, together with the newly described serologically defined DQ specificity TA10, test their prevalence and associations in controls and diseased patients. We find that the newly characterized DNA bands are present at a much higher frequency in RA and IDDM patients than in controls. These findings may lead to a greater understanding of the pathogenesis of such diseases.