当前位置: X-MOL 学术Immunogenetics › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Specific amino acid patterns define split specificities of HLA-B15 antigens enabling conversion from DNA-based typing to serological equivalents.
Immunogenetics ( IF 3.2 ) Pub Date : 2020-06-20 , DOI: 10.1007/s00251-020-01172-8
Burcu Duygu 1, 2 , Benedict M Matern 1, 2 , Lotte Wieten 1, 2 , Christina E M Voorter 1, 2 , Marcel G J Tilanus 1, 2
Affiliation  

The HLA-B15 typing by serological approaches defined the serological subgroups (or splits) B62, B63, B75, B76, B77 and B70 (B71 and B72). The scarcity of sera with specific anti-HLA antibodies makes the serological typing method difficult to discriminate a high variety of HLA antigens, especially between the B15 antigen subgroups. Advancements in DNA-based technologies have led to a switch from serological typing to high-resolution DNA typing methods. DNA sequencing techniques assign B15 specificity to all alleles in the HLA-B*15 allele group, without distinction of the serological split equivalents. However, the presence of antibodies in the patient defined as split B15 antigens urges the identification of HLA-B*15 allele subtypes of the donor, since the presence of donor-specific antibodies is an important contraindication for organ transplantation. Although the HLA dictionary comprises information regarding the serological subtypes of HLA alleles, there are currently 394 B15 antigens out of 516 in the IPD-IMGT/HLA database (3.38.0) without any assigned serological subtype. In this regard, we aimed to identify specific amino acid patterns for each B*15 serological split, in order to facilitate the assignment of B*15 alleles to serological equivalents after high-resolution molecular typing. As a result, serological specificities of 372/394 not yet assigned alleles could be predicted based on amino acid motifs. Furthermore, two new serological types were identified and added, B62-Bw4 and B71-Bw4.



中文翻译:

特定的氨基酸模式定义了HLA-B15抗原的分裂特异性,可以从基于DNA的分型转换为血清学等同物。

通过血清学方法分型的HLA-B15定义了血清学亚组(或分裂)B62,B63,B75,B76,B77和B70(B71和B72)。特异性抗HLA抗体缺乏血清,使得血清学分型方法难以区分多种HLA抗原,尤其是在B15抗原亚组之间。基于DNA的技术的进步已导致从血清学分型向高分辨率DNA分型方法的转变。DNA测序技术将B15特异性赋予HLA-B * 15等位基因组中的所有等位基因,而无需区分血清学上的等价物。但是,患者中定义为分裂的B15抗原的抗体的存在促使人们鉴定供体的HLA-B * 15等位基因亚型,因为供体特异性抗体的存在是器官移植的重要禁忌症。尽管HLA词典包含有关HLA等位基因血清型亚型的信息,但IPD-IMGT / HLA数据库(3.38.0)中目前在516种中有394种B15抗原,而未分配任何血清亚型。在这方面,我们旨在确定每个B * 15血清学分裂的特定氨基酸模式,以便于在高分辨率分子分型后将B * 15等位基因分配给血清学等同物。结果,可以基于氨基酸基序预测尚未分配的等位基因的372/394的血清学特异性。此外,鉴定并添加了两种新的血清学类型:B62-Bw4和B71-Bw4。尽管HLA词典包含有关HLA等位基因血清型亚型的信息,但IPD-IMGT / HLA数据库(3.38.0)中目前在516种中有394种B15抗原,而未分配任何血清亚型。在这方面,我们旨在确定每个B * 15血清学分裂的特定氨基酸模式,以便于在高分辨率分子分型后将B * 15等位基因分配给血清学等同物。结果,可以基于氨基酸基序预测尚未分配的等位基因的372/394的血清学特异性。此外,鉴定并添加了两种新的血清学类型:B62-Bw4和B71-Bw4。尽管HLA词典包含有关HLA等位基因血清型亚型的信息,但IPD-IMGT / HLA数据库(3.38.0)中目前在516种中有394种B15抗原,而未分配任何血清亚型。在这方面,我们旨在确定每个B * 15血清学分裂的特定氨基酸模式,以便于在高分辨率分子分型后将B * 15等位基因分配给血清学等同物。结果,可以基于氨基酸基序预测尚未分配的等位基因的372/394的血清学特异性。此外,鉴定并添加了两种新的血清学类型:B62-Bw4和B71-Bw4。我们的目的是为每个B * 15血清学片段鉴定特定的氨基酸模式,以便于在高分辨率分子分型后将B * 15等位基因分配给血清学等同物。结果,可以基于氨基酸基序预测尚未分配的等位基因的372/394的血清学特异性。此外,鉴定并添加了两种新的血清学类型:B62-Bw4和B71-Bw4。我们的目的是为每个B * 15血清学片段鉴定特定的氨基酸模式,以便于在高分辨率分子分型后将B * 15等位基因分配给血清学等同物。结果,可以基于氨基酸基序预测尚未分配的等位基因的372/394的血清学特异性。此外,鉴定并添加了两种新的血清学类型:B62-Bw4和B71-Bw4。

更新日期:2020-06-22
down
wechat
bug