
doi: 10.1111/vox.12149
pmid: 24697294
Background and ObjectivesHuman platelet antigens (HPAs) are platelet‐specific alloantigens associated with polymorphisms of platelet surface glycoproteins (GPs), and they can induce alloantibodies when individuals lacking a particular polymorphism are exposed to them via pregnancy or transfusion. Immune responses to HPAs are involved in the pathogenesis of several clinical syndromes. HPA genotyping is therefore important for clinical diagnosis and laboratory research. This study aims to establish a reference panel for HPA genotyping.Materials and MethodsGenomic DNA extracted from human blood was used as the template for amplifying HPA (1a–5a and 15a) gene fragments using specific primers. The amplified products were cloned into pGM‐T vectors, which were transformed into competent TOP10 cells. After clone screening and amplification, the plasmids were extracted and sequenced. Next, the gene fragments HPA‐1b–5b and 15b were obtained by site‐directed mutagenesis using the corresponding HPA‐1a–5a and 15a plasmids as template DNA.ResultsWe successfully constructed reference plasmids for HPA genotyping with HPA‐1a–5a, 15a, HPA‐1b–5b and 15b. The DNA sequences were consistent with those published in GenBank.ConclusionObtaining reference DNA for low‐frequency HPAs is very difficult, and the successful construction of reference plasmids for the six HPA systems may solve this problem. Establishment of this panel has laid the foundation for future research on HPA genotyping.
Blood Platelets, Base Sequence, Genotype, Genotyping Techniques, Platelet Transfusion, Sequence Analysis, DNA, Reference Standards, Mutagenesis, Site-Directed, Humans, Antigens, Human Platelet, Polymorphism, Restriction Fragment Length, Polymorphism, Single-Stranded Conformational, Plasmids
Blood Platelets, Base Sequence, Genotype, Genotyping Techniques, Platelet Transfusion, Sequence Analysis, DNA, Reference Standards, Mutagenesis, Site-Directed, Humans, Antigens, Human Platelet, Polymorphism, Restriction Fragment Length, Polymorphism, Single-Stranded Conformational, Plasmids
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