Killer cell immunoglobulin-like receptor (KIR) gene diversity in a population naturally exposed to malaria in Porto Velho, Northern Brazil

Killer cell immunoglobulin‐like receptors (KIR) are expressed mainly in natural killer cells and specifically recognize human leukocyte antigen (HLA) class I molecules. The repertoire of KIR genes and KIR–HLA pairs is known to play a key role in the susceptibilities to and the outcomes of several di...

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Veröffentlicht in:Tissue antigens 2015-03, Vol.85 (3), p.190-199
Hauptverfasser: Perce-da-Silva, D. S., Silva, L. A., Lima-Junior, J. C., Cardoso-Oliveira, J., Ribeiro-Alves, M., Santos, F., Porto, L. C. M. S., Oliveira-Ferreira, J., Banic, D. M.
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container_end_page 199
container_issue 3
container_start_page 190
container_title Tissue antigens
container_volume 85
creator Perce-da-Silva, D. S.
Silva, L. A.
Lima-Junior, J. C.
Cardoso-Oliveira, J.
Ribeiro-Alves, M.
Santos, F.
Porto, L. C. M. S.
Oliveira-Ferreira, J.
Banic, D. M.
description Killer cell immunoglobulin‐like receptors (KIR) are expressed mainly in natural killer cells and specifically recognize human leukocyte antigen (HLA) class I molecules. The repertoire of KIR genes and KIR–HLA pairs is known to play a key role in the susceptibilities to and the outcomes of several diseases, including malaria. The aim of this study was to investigate the distribution of KIR genes, KIR genotypes and KIR–HLA pair combinations in a population naturally exposed to malaria from Brazilian Amazon. All 16 KIR genes investigated were present in the studied population. Overall, 46 KIR genotypes were defined. The two most common genotypes in the Porto Velho communities, genotypes 1 and 2, were present at similar frequencies as in the Americas. Principal component analysis based on the frequencies of the KIR genes placed the Porto Velho population closer to the Venezuela Mestizos, USA California hispanic and Brazil Paraná Mixed in terms of KIR gene frequencies. This analysis highlights the multi‐ethnic profile of the Porto Velho population. Most of the individuals were found to have at least one inhibitory KIR–HLA pair. Seventy‐five KIR–HLA pair combinations were identified. The KIR‐2DL2/3_HLA‐C1, KIR3DL1_HLA‐Bw4 and KIR2DL1_HLA‐C2 pairs were the most common. There was no association between KIR genes, KIR genotypes or KIR–HLA pair combinations and malaria susceptibility in the studied population. This is the first report on the distribution of KIR and known HLA ligands in the Porto Velho population. Taken together, these results should provide baseline information that will be relevant to population evolutionary history, malaria and other diseases studies in populations of the Brazilian Amazon.
doi_str_mv 10.1111/tan.12523
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S. ; Silva, L. A. ; Lima-Junior, J. C. ; Cardoso-Oliveira, J. ; Ribeiro-Alves, M. ; Santos, F. ; Porto, L. C. M. S. ; Oliveira-Ferreira, J. ; Banic, D. M.</creator><creatorcontrib>Perce-da-Silva, D. S. ; Silva, L. A. ; Lima-Junior, J. C. ; Cardoso-Oliveira, J. ; Ribeiro-Alves, M. ; Santos, F. ; Porto, L. C. M. S. ; Oliveira-Ferreira, J. ; Banic, D. M.</creatorcontrib><description>Killer cell immunoglobulin‐like receptors (KIR) are expressed mainly in natural killer cells and specifically recognize human leukocyte antigen (HLA) class I molecules. The repertoire of KIR genes and KIR–HLA pairs is known to play a key role in the susceptibilities to and the outcomes of several diseases, including malaria. The aim of this study was to investigate the distribution of KIR genes, KIR genotypes and KIR–HLA pair combinations in a population naturally exposed to malaria from Brazilian Amazon. All 16 KIR genes investigated were present in the studied population. Overall, 46 KIR genotypes were defined. The two most common genotypes in the Porto Velho communities, genotypes 1 and 2, were present at similar frequencies as in the Americas. Principal component analysis based on the frequencies of the KIR genes placed the Porto Velho population closer to the Venezuela Mestizos, USA California hispanic and Brazil Paraná Mixed in terms of KIR gene frequencies. This analysis highlights the multi‐ethnic profile of the Porto Velho population. Most of the individuals were found to have at least one inhibitory KIR–HLA pair. Seventy‐five KIR–HLA pair combinations were identified. The KIR‐2DL2/3_HLA‐C1, KIR3DL1_HLA‐Bw4 and KIR2DL1_HLA‐C2 pairs were the most common. There was no association between KIR genes, KIR genotypes or KIR–HLA pair combinations and malaria susceptibility in the studied population. This is the first report on the distribution of KIR and known HLA ligands in the Porto Velho population. 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A.</creatorcontrib><creatorcontrib>Lima-Junior, J. C.</creatorcontrib><creatorcontrib>Cardoso-Oliveira, J.</creatorcontrib><creatorcontrib>Ribeiro-Alves, M.</creatorcontrib><creatorcontrib>Santos, F.</creatorcontrib><creatorcontrib>Porto, L. C. M. S.</creatorcontrib><creatorcontrib>Oliveira-Ferreira, J.</creatorcontrib><creatorcontrib>Banic, D. M.</creatorcontrib><title>Killer cell immunoglobulin-like receptor (KIR) gene diversity in a population naturally exposed to malaria in Porto Velho, Northern Brazil</title><title>Tissue antigens</title><addtitle>Tissue Antigens</addtitle><description>Killer cell immunoglobulin‐like receptors (KIR) are expressed mainly in natural killer cells and specifically recognize human leukocyte antigen (HLA) class I molecules. The repertoire of KIR genes and KIR–HLA pairs is known to play a key role in the susceptibilities to and the outcomes of several diseases, including malaria. The aim of this study was to investigate the distribution of KIR genes, KIR genotypes and KIR–HLA pair combinations in a population naturally exposed to malaria from Brazilian Amazon. All 16 KIR genes investigated were present in the studied population. Overall, 46 KIR genotypes were defined. The two most common genotypes in the Porto Velho communities, genotypes 1 and 2, were present at similar frequencies as in the Americas. Principal component analysis based on the frequencies of the KIR genes placed the Porto Velho population closer to the Venezuela Mestizos, USA California hispanic and Brazil Paraná Mixed in terms of KIR gene frequencies. This analysis highlights the multi‐ethnic profile of the Porto Velho population. Most of the individuals were found to have at least one inhibitory KIR–HLA pair. Seventy‐five KIR–HLA pair combinations were identified. The KIR‐2DL2/3_HLA‐C1, KIR3DL1_HLA‐Bw4 and KIR2DL1_HLA‐C2 pairs were the most common. 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The repertoire of KIR genes and KIR–HLA pairs is known to play a key role in the susceptibilities to and the outcomes of several diseases, including malaria. The aim of this study was to investigate the distribution of KIR genes, KIR genotypes and KIR–HLA pair combinations in a population naturally exposed to malaria from Brazilian Amazon. All 16 KIR genes investigated were present in the studied population. Overall, 46 KIR genotypes were defined. The two most common genotypes in the Porto Velho communities, genotypes 1 and 2, were present at similar frequencies as in the Americas. Principal component analysis based on the frequencies of the KIR genes placed the Porto Velho population closer to the Venezuela Mestizos, USA California hispanic and Brazil Paraná Mixed in terms of KIR gene frequencies. This analysis highlights the multi‐ethnic profile of the Porto Velho population. Most of the individuals were found to have at least one inhibitory KIR–HLA pair. 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subjects African Continental Ancestry Group
Alleles
Brazil
Brazil - ethnology
European Continental Ancestry Group
Gene Expression
Gene Frequency
Genotype
Hispanic Americans
HLA Antigens - classification
HLA Antigens - genetics
HLA Antigens - immunology
human leukocyte antigen
Humans
killer immunoglobulin-like receptors
malaria
Malaria, Falciparum - ethnology
Malaria, Falciparum - genetics
Malaria, Falciparum - immunology
Malaria, Falciparum - parasitology
Malaria, Vivax - ethnology
Malaria, Vivax - genetics
Malaria, Vivax - immunology
Malaria, Vivax - parasitology
Plasmodium falciparum - isolation & purification
Plasmodium vivax - isolation & purification
Polymorphism, Genetic
Principal Component Analysis
Receptors, KIR - classification
Receptors, KIR - genetics
Receptors, KIR - immunology
title Killer cell immunoglobulin-like receptor (KIR) gene diversity in a population naturally exposed to malaria in Porto Velho, Northern Brazil
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