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Discovery of novel MHC-class I alleles and haplotypes in Filipino cynomolgus macaques (Macaca fascicularis) by pyrosequencing and Sanger sequencing: Mafa-class I polymorphism

, : Discovery of novel MHC-class I alleles and haplotypes in Filipino cynomolgus macaques (Macaca fascicularis) by pyrosequencing and Sanger sequencing: Mafa-class I polymorphism. Immunogenetics 67(10): 563-578

Although the low polymorphism of the major histocompatibility complex (MHC) transplantation genes in the Filipino cynomolgus macaque (Macaca fascicularis) is expected to have important implications in the selection and breeding of animals for medical research, detailed polymorphism information is still lacking for many of the duplicated class I genes. To better elucidate the degree and types of MHC polymorphisms and haplotypes in the Filipino macaque population, we genotyped 127 unrelated animals by the Sanger sequencing method and high-resolution pyrosequencing and identified 112 different alleles, 28 at cynomolgus macaque MHC (Mafa)-A, 54 at Mafa-B, 12 at Mafa-I, 11 at Mafa-E, and seven at Mafa-F alleles, of which 56 were newly described. Of them, the newly discovered Mafa-A8*01:01 lineage allele had low nucleotide similarities (<86%) with primate MHC class I genes, and it was also conserved in the Vietnamese and Indonesian populations. In addition, haplotype estimations revealed 17 Mafa-A, 23 Mafa-B, and 12 Mafa-E haplotypes integrated with 84 Mafa-class I haplotypes and Mafa-F alleles. Of these, the two Mafa-class I haplotypes, F/A/E/B-Hp1 and F/A/E/B-Hp2, had the highest haplotype frequencies at 10.6 and 10.2%, respectively. This suggests that large scale genetic screening of the Filipino macaque population would identify these and other high-frequency Mafa-class I haplotypes that could be used as MHC control animals for the benefit of biomedical research.


PMID: 26349955

DOI: 10.1007/s00251-015-0867-9

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