HLA-Cw*1701 is associated with two sub-Saharan African-derived HLA haplotypes: HLA-B*4201, DRB1*03 and HLA-B*4202 without DRB1*03.

HLA-Cw*1701 is associated with two sub-Saharan African-derived HLA haplotypes: HLA-B*4201, DRB1*03 and HLA-B*4202 without DRB1*03.
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HLA-Cw*1701 与两种源自撒哈拉以南非洲的 HLA 单倍型相关:HLA-B*4201、DRB1*03 和不含 DRB1*03 的 HLA-B*4202。

DOI:
10.1034/j.1399-0039.1999.540316.x
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发表时间:
1999
期刊:
影响因子:
--
通讯作者:
Yunis,EJ
Yunis,EJ
中科院分区:
医学4区
文献类型:
--
作者:
Clavijo,OP;Delgado,JC;Yu,N;Fraser,PA;Yunis,EJ

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不同的扩展单倍型已被描述为许多种族群体,如非洲裔美国人。在非洲裔美国人和南部非洲科萨人中,补体型FC(1,90)0与HLA-B42、DRB 1 *0302连锁不平衡,表明有共同的祖先。为了分析Cw*17等位基因(Cw*1701,1702)与这种非洲来源的扩展单倍型的分布,我们研究了来自非洲裔美国人个体的大量样本,以及一组携带HLA-B42,DR 3和HLA-B42,非DR 3抗原的选定样本。使用序列特异性扩增(SSP)和序列特异性寡核苷酸探针杂交(SSOP)分配HLA等位基因。我们发现携带扩展单倍型[HLA-B42,FC(1,90)0,DRB 1 *0302]的所有单倍型(共10种)均为HLA-Cw *1701阳性。有趣的是,在携带HLA-B42、DR 3、Cw*1701的所有样本(共17份)中发现了HLA B*4201,而在来自携带HLA-B42、Cw*1701非DR 3的个体的13份样本中,有10份发现了HLA-B*4202。这些发现表明,HLA-Cw *17多态性在不同种族人群中是保守的,HLA-B42等位基因似乎至少分离了不同的非洲来源的单倍型。这些发现的历史背景对于人类进化的研究非常重要,它们可能有助于制定为非洲来源人群寻找器官移植可能供体的策略。
Different extended haplotypes have been described for many ethnic groups, such as African‐Americans. The complotype FC(1,90)0 is in linkage disequilibrium with HLA‐B42, DRB1*0302 in African‐Americans and Southern African Xhosa individuals, suggesting a common ancestry. In order to analyze the distribution of Cw*17 alleles (Cw*1701, 1702) in relation to this African‐derived extended haplotype, we studied a large panel of samples from African‐American individuals and additionally a group of selected samples carrying HLA‐B42, DR3 and HLA‐B42, non‐DR3 antigens. HLA alleles were assigned using sequence‐specific amplification (SSP) and sequence‐specific oligonucleotide probe hybridization (SSOP). We have found that all haplotypes (10 in total) carrying the extended haplotypes [HLA‐B42, FC(1,90)0, DRB1*0302] were positive for HLA‐Cw*1701. Interestingly, HLA B*4201 was found in all samples (17 in total) carrying HLA‐B42, DR3, Cw*1701, whereas HLA‐B*4202 was found in 10 out of 13 samples from individuals carrying HLA B42, Cw*1701 non‐DR3. These findings suggest that HLA‐Cw*17 polymorphism is conserved in different ethnic populations and that HLA‐B42 alleles seem to separate at least different African‐derived haplotypes. The historical context of these findings are important for the study of human evolution and they may be useful for the development of strategies in the search for possible donors in organ transplantation for African‐derived populations.
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