人类白细胞抗原新等位基因HLA—A*31:22的序列分析及确认  被引量:3

Identification of a novel human leukocyte antigen allele, HLA-A * 31 : 22

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作  者:戚新 李归冀[2] 章旭 张坤莲 李晓丰 

机构地区:[1]辽宁省血液中心,辽宁省血液安全研究重点实验室,沈阳市血液安全研究重点实验室,110044 [2]中国医科大学七年制96期2班

出  处:《中华微生物学和免疫学杂志》2012年第12期1011-1014,共4页Chinese Journal of Microbiology and Immunology

基  金:沈阳市科学技术计划项目(F10-206-1-00)

摘  要:目的序列分析及确认一例中国人群中的人类白细胞抗原(human leukocyte antigen,HLA)新等位基因。方法应用基于Luminex平台的聚合酶链反应一序列特异性寡核苷酸探针(PCR—SSOP)基因分型法、PCR产物测序法和组特异性引物测序法,通过软件分析该样本DNA基因序列及与最相近HLA等位基因序列的差异。结果PCR-SSOP结果显示该样本HLA.A基因座的反应格局与已知HLA—A等位基因均不一致;DNA序列分析显示,在所检测的第2—4外显子中,该样本HLA.A基因座序列与所有已知HLA-A等位基因序列均不一致,与同源性最高的等位基因A*31:01:02的差异只在外显子2区域中产生了nt245A-c-个碱基取代,并导致相应的82位密码子由GAG—GCG,编码的氨基酸由谷氨酸(Glu)变为丙氨酸(Ala)。结论该基因为HLA新等位基因,被世界卫生组织HLA因子命名委员会正式命名为HLA—A$31:22。Objective To identify and confirm a novel HLA allele. Methods A new human leukocyte antigen A allele was found during routine HLA genotyping by polymerase chain reaction-sequence specific oligonucleotide probes(PCR-SSOP) and sequencing-based typing (SBT). HLA-A locus was amplified from exon 1 through exon 8, and the nucleotide sequence of exon 2 to exon 4 for HLA-A were sequenced in both directions. Results The novel HLA-A * 31 allele is identical to A * 31 : 01 : 02 with an exception of one base substitution at position 245 of exon 2 where an ' A' change to ' C' resulting in codon 82 changed from GAG to GCG. Conclusion A novel HLA allele, A * 31 : 22, was identified, and was named officially by the WHO Nomenclature Committee for factors of the HLA system.

关 键 词:HLA-A*31 22 新等位基因 序列分析 

分 类 号:R392.1[医药卫生—免疫学]

 

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