PMID- 15936272 OWN - NLM STAT- MEDLINE DCOM- 20050929 LR - 20220129 IS - 0960-9822 (Print) IS - 0960-9822 (Linking) VI - 15 IP - 11 DP - 2005 Jun 7 TI - Pathogen-driven selection and worldwide HLA class I diversity. PG - 1022-7 AB - The human leukocyte antigen (HLA; known as MHC in other vertebrates) plays a central role in the recognition and presentation of antigens to the immune system and represents the most polymorphic gene cluster in the human genome [1]. Pathogen-driven balancing selection (PDBS) has been previously hypothesized to explain the remarkable polymorphism in the HLA complex, but there is, as yet, no direct support for this hypothesis [2 and 3]. A straightforward prediction coming out of the PDBS hypothesis is that populations from areas with high pathogen diversity should have increased HLA diversity in relation to their average genomic diversity. We tested this prediction by using HLA class I genetic diversity from 61 human populations. Our results show that human colonization history explains a substantial proportion of HLA genetic diversity worldwide. However, between-population variation at the HLA class I genes is also positively correlated with local pathogen richness (notably for the HLA B gene), thus providing support for the PDBS hypothesis. The proportion of variations explained by pathogen richness is higher for the HLA B gene than for the HLA A and HLA C genes. This is in good agreement with both previous immunological and genetic data suggesting that HLA B could be under a higher selective pressure from pathogens. FAU - Prugnolle, Franck AU - Prugnolle F AD - Theoretical and Molecular Population Genetics Group, Department of Genetics, University of Cambridge, Downing Street, Cambridge CB2 3EH, United Kingdom. prugnolle@yahoo.fr FAU - Manica, Andrea AU - Manica A FAU - Charpentier, Marie AU - Charpentier M FAU - Guegan, Jean Francois AU - Guegan JF FAU - Guernier, Vanina AU - Guernier V FAU - Balloux, Francois AU - Balloux F LA - eng GR - BB/C007123/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Curr Biol JT - Current biology : CB JID - 9107782 SB - IM MH - Communicable Diseases/*genetics/microbiology/parasitology/virology MH - Databases, Factual MH - Genes, MHC Class I/*genetics MH - *Genetic Variation MH - *Genetics, Population MH - Geography MH - Host-Parasite Interactions/genetics MH - Humans MH - *Models, Genetic MH - Population Dynamics MH - Regression Analysis MH - *Selection, Genetic MH - Species Specificity EDAT- 2005/06/07 09:00 MHDA- 2005/09/30 09:00 CRDT- 2005/06/07 09:00 PHST- 2005/02/04 00:00 [received] PHST- 2005/04/20 00:00 [revised] PHST- 2005/04/21 00:00 [accepted] PHST- 2005/06/07 09:00 [pubmed] PHST- 2005/09/30 09:00 [medline] PHST- 2005/06/07 09:00 [entrez] AID - S0960-9822(05)00451-3 [pii] AID - 10.1016/j.cub.2005.04.050 [doi] PST - ppublish SO - Curr Biol. 2005 Jun 7;15(11):1022-7. doi: 10.1016/j.cub.2005.04.050.