Distinctive KIR and HLA diversity in a panel of north Indian Hindus

HLA and KIR are diverse and rapidly evolving gene complexes that work together in human immunity mediated by cytolytic lymphocytes. Understanding their complex immunogenetic interaction requires study of both HLA and KIR diversity in the same human population. Here a panel of 72 unrelated north Indi...

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Bibliographic Details
Published in:Immunogenetics (New York) 2002-03, Vol.53 (12), p.1009-1019
Main Authors: Rajalingam, Raja, Krausa, Peter, Shilling, Heather G, Stein, Jason B, Balamurugan, Arumugam, McGinnis, Malcolm D, Cheng, Nathalie W, Mehra, Narinder K, Parham, Peter
Format: Article
Language:English
Subjects:
Alleles
DQA1 gene
DQB1 gene
DRB1 gene
Ethnic Groups - genetics
Gene Frequency
Genetic Variation
Haplotypes
histocompatibility locus HLA
HLA
HLA Antigens - genetics
HLA gene
HLA-A Antigens - genetics
HLA-A2 Antigen - genetics
HLA-B Antigens - genetics
HLA-C Antigens - genetics
Humans
India
KIR gene
Receptors, Immunologic - genetics
Receptors, KIR
Receptors, KIR2DL1
Receptors, KIR2DL3
Receptors, KIR3DL1
Receptors, KIR3DL2
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Summary:HLA and KIR are diverse and rapidly evolving gene complexes that work together in human immunity mediated by cytolytic lymphocytes. Understanding their complex immunogenetic interaction requires study of both HLA and KIR diversity in the same human population. Here a panel of 72 unrelated north Indian Hindus was analyzed. HLA- A, B, C, DRB1, DQA1, and DQB1 alleles and their frequencies were determined by sequencing or high-resolution typing of genomic DNA; KIR genotypes were determined by gene-specific typing and by allele-level DNA typing for KIR2DL1, 2DL3, 2DL5, 3DL1, and 3DL2. From HLA analysis, the north Indian population is seen to have several characteristics shared either with Caucasian or East Asian populations, consistent with the demographic history of north India, as well as specific features, including several alleles at high frequency that are rare or absent in other populations. A majority of the north Indian KIR gene profiles have not been seen in Caucasian and Asian populations. Most striking is a higher frequency of the B group of KIR haplotypes, resulting in equal frequencies for A and B group haplotypes in north Indians. All 72 members of the north Indian panel have different HLA genotype and different KIR genotype.
ISSN:0093-7711
1432-1211
DOI:10.1007/s00251-001-0425-5