中国组织工程研究 ›› 2026, Vol. 30 ›› Issue (7): 1782-1789.doi: 10.12307/2025.574

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

人类白细胞抗原新等位基因DQB1*06:436和DQB1*02:108的序列分析和确认

王满妮,王小芳,王天菊,尚利侠,陈  乐,李昱辉,张  嫄,齐  珺   

  1. 陕西省血液中心,西安市中心血站,陕西省西安市   710061
  • 收稿日期:2024-11-01 修回日期:2025-02-25 接受日期:2025-03-17 出版日期:2026-03-08 发布日期:2025-08-20
  • 通讯作者: 齐珺,博士,主任技师,陕西省血液中心,西安市中心血站,陕西省西安市 710061
  • 作者简介:王满妮,女,1981年生,陕西省礼泉县人,汉族,2007年西安交通大学医学部毕业,硕士,副主任技师,主要从事HLA分型及输血免疫相关工作。
  • 基金资助:
    陕西省重点研发计划一般项目(2022SF-098),项目负责人:齐珺;陕西省卫生健康高层次人才青年人才培育计划项目,项目负责人:齐珺;陕西省重点研发计划一般项目(2023-YBSF-024),项目负责人:张嫄

Sequence analysis and identification of novel human leukocyte antigen alleles DQB1*06:436 and DQB1*02:108

Wang Manni, Wang Xiaofang, Wang Tianju, Shang Lixia, Chen Le, Li Yuhui, Zhang Yuan, Qi Jun   

  1. Xi’an Central Blood Station, Shaanxi Blood Center, Xi’an 710061, Shaanxi Province, China
  • Received:2024-11-01 Revised:2025-02-25 Accepted:2025-03-17 Online:2026-03-08 Published:2025-08-20
  • Contact: Qi Jun, MD, Chief technician, Xi’an Central Blood Station, Shaanxi Blood Center, Xi’an 710061, Shaanxi Province, China
  • About author:Wang Manni, MS, Associate chief technician, Xi’an Central Blood Station, Shaanxi Blood Center, Xi’an 710061, Shaanxi Province, China
  • Supported by:
    Shaanxi Provincial Key Research & Development Program (General Project), No. 2022SF-098 (to QJ); Shaanxi Provincial Health and Health High-level Talent Cultivation Program Project (to QJ); Shaanxi Province Key Research & Development Plan (General Project), No. 2023-YBSF-024 (to ZY) 

摘要:

文题释义:

下一代测序技术:可同时检测人类白细胞抗原基因座2个不同等位基因的序列,分别得到特定单一等位基因序列,测定序列为单链结果,因此有助于解决Sanger双链测序技术中存在的人类白细胞抗原分型模棱两可的问题。而且下一代测序技术检测人类白细胞抗原位点的整个基因组序列,更有利于人类白细胞抗原的精准分型。
异基因造血干细胞移植:是将捐献的正常造血干细胞通过静脉输注到人类白细胞抗原相合的患者体内,用以重建患者的造血与免疫功能,是目前治愈血液系统恶性疾病的有效治疗手段之一。造血干细胞移植前必须进行人类白细胞抗原基因匹配。造血干细胞移植目前有同胞全相合、单倍体相合、非亲缘供者、脐血等不同的移植方式。

摘要
背景:人类白细胞抗原(human leukocyte antigen,HLA)系统具有高度遗传多态性,在抗原呈递、免疫识别中发挥重要作用,主要应用于造血干细胞移植和器官移植供受者选择、群体遗传学、输血医学等领域。
目的:对新等位基因HLA-DQB1*06:436 和HLA-DQB1*02:108进行确认并分析核苷酸序列。
方法:应用DNA测序分型技术对2019年中国造血干细胞捐献者进行入库HLA检测,发现2个样本DQB1位点无完全匹配的等位基因,采用二代测序方法对2个样本的DQB1位点进行序列确认,分析核苷酸差异。

结果与结论:样本1 DQB1位点与其同源性最高的HLA-DQB1*06:79:01相比,在第2外显子205位碱基由T替换为G,导致第37位氨基酸由酪氨酸(Tyr)变为天冬氨酸(Asp)。样本2 DQB1位点与其同源性最高的HLA-DQB1*02:01:01:01相比,第3外显子485位碱基发生了G > A突变,第130位氨基酸由精氨酸(Arg)变为谷氨酰胺(Gln)。实验验证2个等位基因均为HLA-DQB1新等位基因,分别被世界卫生组织HLA因子命名委员会命名为HLA-DQ B1*06:436和HLA-DQB1*02:108。

https://orcid.org/0009-0006-1225-9978 (王满妮) 


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


关键词: 人类白细胞抗原, 基因分型, 新等位基因, 碱基突变, SBT, NGS, DQB1

Abstract: BACKGROUND: The human leukocyte antigen (HLA) system is highly genetically polymorphic and plays an important role in antigen presentation and immune recognition. It is mainly used in the fields of hematopoietic stem cell transplantation and organ transplantation donor selection, population genetics, and transfusion medicine
OBJECTIVE: To confirm the new alleles HLA-DQB1*06:436 and HLA-DQB1*02:108 and analyze the nucleotide sequences. 
METHODS: DNA sequence-based typing was performed for HLA testing on Chinese hematopoietic stem cell donors in 2019. It was found that there was no completely matching allele at the DQB1 locus of the two samples. The second-generation sequencing method was used to sequence the DQB1 loci of the two samples and analyze the nucleotide differences. 
RESULTS AND CONCLUSION: Compared with the HLA-DQB1*06:79:01 with the highest homology, the DQB1 locus of sample 1 replaced the base T with G at position 205 of exon 2, resulting in the change of amino acid 37 from tyrosine (Tyr) to aspartic acid (Asp). Compared with the HLA-DQB1*02:01:01:01 with the highest homology, the DQB1 locus of sample 2 underwent a G>A mutation at position 485 of exon 3, and the amino acid 130 changed from arginine (Arg) to glutamine (Gln). The experiment verified that both alleles were new HLA-DQB1 alleles, which were named HLA-DQ B1*06:436 and HLA-DQB1*02:108 by the World Health Organization HLA Factor Nomenclature Committee.

Key words: human leukocyte antigen, genotyping, novel allele, base mutation, SBT, NGS, DQB1

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