Characterisation of MHC haplotypes in a breeding colony of Indonesian cynomolgus macaques reveals a high level of diversity

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Abstract
Recent reports have revealed that cynomolgus macaques obtained from different geographic origins may be more or less suitable for particular studies depending on the specific question(s) being addressed, e.g. Mauritian cynomolgus macaques are particularly suitable for detailed immunological studies against a limited genetic background while less conserved populations may be more appropriate to predict breadth of vaccine coverage in the genetically diverse human population. We have characterised MHC haplotypes in 90 Indonesian cynomolgus macaques using microsatellite and reference strand conformational analysis. Thirty unique haplotypes were defined in the cohort, emphasising the high degree of diversity in this population of cynomolgus macaques. The majority of haplotypes were present at a frequency of ≤6%. Transcription profiles indicated that each haplotype was associated with two to eight transcribed class I alleles. The results corroborate previous reports of the extensive MHC diversity of Indonesian cynomolgus macaques and provide additional data to inform colony management decisions. Further, definition of the MHC diversity of the population satisfies one of the prerequisites to MHC association studies and detailed immunological investigations in this outbred non-human primate species.

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