首页> 外文期刊>International journal of immunogenetics >Immunogenetics of three novel HLA-Class II alleles: DRB1*03:112, DQB1*03:02:16 and DQB1*03:139
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Immunogenetics of three novel HLA-Class II alleles: DRB1*03:112, DQB1*03:02:16 and DQB1*03:139

机译:三种新型HLA II类等位基因的免疫遗传学:DRB1 * 03:112,DQB1 * 03:02:16和DQB1 * 03:139

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摘要

Three novel HLA-Class II alleles, DRB1*03:112, DQB1*03:02:16 and DQB1*03: 139, are described with predicted bearing haplotypes of A*02:01, B*40:01, C*03:04, DRB1*03:112, DQB1*02: 01; A*23:01, B*15:01, C*03:03, DRB1*04:01, DQB1*03:02:16 and A*01:01, B*44:02, C*05:01/03, DRB1*04: 01, DQB1*03:139. Serological tests showed that the DRB1*03:112 and DQB1*03:139 specificities failed to react as expected with some well-documented monoclonal antibodies. Subsequent examination of published HLA-Class II epitopes and inspection of amino acid motifs suggested that epitopes exist that include the positions of their single substitutions (F31C between DRB1*03: 01: 01: 01 and DRB1*03: 112, and R48P between DQB1*03:01:01:01 and DQB1*03:139 specificities). This suggests that the reactivity of the monoclonal antibodies used was dependent on these epitopes and that their loss from these rare allele products resulted in their aberrant serology. The new alleles were found after the sequence-based typing of 32 530 random UK European routine blood donors suggesting that each has a maximum carriage frequency of 0.0031% in the blood donor population resident in Wales.
机译:描述了三个新颖的HLA II类等位基因DRB1 * 03:112,DQB1 * 03:02:16和DQB1 * 03:139,预测的预测单倍型为A * 02:01,B * 40:01,C * 03 :04,DRB1 * 03:112,DQB1 * 02:01; A * 23:01,B * 15:01,C * 03:03,DRB1 * 04:01,DQB1 * 03:02:16和A * 01:01,B * 44:02,C * 05:01 / 03,DRB1 * 04:01,DQB1 * 03:139。血清学测试表明,DRB1 * 03:112和DQB1 * 03:139特异性未能与某些文献充分证明的单克隆抗体发生反应。随后对已发布的HLA-II类表位和氨基酸基序的检查表明存在的表位包括其单个取代的位置(DRB1 * 03:01:01:01和DRB1 * 03:112之间为F31C,DQB1之间为R48P * 03:01:01:01和DQB1 * 03:139特异性)。这表明所用单克隆抗体的反应性取决于这些表位,并且它们从这些稀有等位基因产物中的丢失导致它们的血清学异常。在对32 530名英国欧洲常规献血者进行基于序列的分型后,发现了新的等位基因,这表明居住在威尔士的献血者中,每个人的最大携带频率为0.0031%。

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