医学分子生物学杂志 ›› 2022, Vol. 19 ›› Issue (1): 47-50.doi: 10.3870/j.issn.1672-8009.2022.01.007

• 论著 • 上一篇    下一篇

2 例 CisAB / B 亚型的血清学和分子生物学研究

  

  1. 青岛市中心血站, 输血医学研究所 山东省青岛市, 266071 
  • 出版日期:2022-01-31 发布日期:2022-02-25
  • 基金资助:
    青岛市市南区科技计划项目 (No. 2020-2-016-YY)

Serological and Genetic Characterization of CisAB/ B Blood Subgroup: Analysis of Two Cases

  • Online:2022-01-31 Published:2022-02-25

摘要: 目的 结合 ABO 血型血清学结果, 采用 ABO 基因测序技术鉴定 CisAB 血型。 探讨 CisAB/ B 亚型 的血清学和基因型的关系。 方法 对于送至青岛市中心血站 ABO 血型待定的献血者标本, 采用经典试管法 进行血清学分析。 采用聚合酶链反应 (PCR) 直接测序的方法分析 ABO 基因第 6, 7 外显子及侧翼序列、 启动子和增强子序列。 对于有突变的标本再进行单倍型测序确认。 结果 此试验中 CisAB/ B 亚型个体的基 因型为 CisAB01 / B101。 血清学表型分别为 A2B 型和 AxB 型。 这两例标本的启动子序列和增强子序列相同。 结论 依据血清学结果往往很难确定 CisAB 血型, 基因测序技术结合血清学分析能够准确鉴定血型。 基因 型相同的个体会表现出不同的血清学特点。

关键词:  , CisAB, ABO 亚型, 测序

Abstract: Objective To identify the precise ABO blood type subgroup with gene sequencing and discuss the relationship between the serology and genotype in CisAB / B blood subgroup. Methods We screened ABO blood type of blood donors in the blood center. Samples were first examined with a routine serological method. Those with ambiguous results were further examined with genotyping to identify ABO subgroups. The exon 6, exon 7 and the flanking region of ABO gene as well as its promoter and enhancer region were sequenced by PCR. Mutations found in the PCR were further confirmed by haplotype sequencing method. Results Genotype of the two cases were both CisAB01 / B101. Serological test showed the two cases to be A2B and AxB subgroup. Sequences of the promoter region and enhancer region of the two cases were the same. Conclusion It is difficult to identify CisAB only by serological method. DNA sequencing combined with serological testing is able to precisely identify ABO blood subgroup. Individuals with the same genotype would show different serological characteristics.

Key words: CisAB, ABO blood subgroup, sequencing

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