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Construction of microarrays for genotyping of DQA using unmodified 45-mer oligonucleotide

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Abstract

The human leukocyte antigen (HLA) class II system is strongly connected to immunological response and its compatibility between tissues is critical in transplantation. The simple robust typing analyses of HLA genes are extremely important. In this paper, we developed an approach based on microarray technology for genotyping of DQA gene. The microarrays were constructed with a total 31 unmodified 45-mer oligonucleotide. The second exon of DQA gene was amplified, and allowed to hybridize with the array. DQA genotypes were assigned by quantitative analysis of the hybridization results. The arrays were evaluated by DQA genotyping of nine reference samples and 120 clinical samples. The results demonstrate that the genotyping accuracy/concordance achieved 97.5% compared with the direct DNA sequencing. Although our methods did not perform high-resolution genotyping, it could be an alternative for serological typing in routine medical practice.

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Acknowledgments

This work was funded in part by SHUGUANG Program of Shanghai (06SG32) and the National Natural Science Foundation of China (20627005 and 30500401).

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Correspondence to Bang-Ce Ye.

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Yin, BC., Yue, F. & Ye, BC. Construction of microarrays for genotyping of DQA using unmodified 45-mer oligonucleotide. Mol Biotechnol 36, 142–150 (2007). https://doi.org/10.1007/s12033-007-0011-7

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  • DOI: https://doi.org/10.1007/s12033-007-0011-7

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