Preprint Review Version 1 This version is not peer-reviewed

Major Histocompatibility Complex (MHC) Genes and Disease Resistance in Fish

Version 1 : Received: 18 February 2019 / Approved: 19 February 2019 / Online: 19 February 2019 (11:14:48 CET)

How to cite: Yamaguchi, T.; Dijkstra, J.M. Major Histocompatibility Complex (MHC) Genes and Disease Resistance in Fish. Preprints 2019, 2019020179 (doi: 10.20944/preprints201902.0179.v1). Yamaguchi, T.; Dijkstra, J.M. Major Histocompatibility Complex (MHC) Genes and Disease Resistance in Fish. Preprints 2019, 2019020179 (doi: 10.20944/preprints201902.0179.v1).

Abstract

The basic pattern of MHC variation in fish, with MHC class I versus class II, and polymorphic classical versus nonpolymorphic nonclassical, is similar in fish and mammals. Nevertheless, in many or all teleost fishes, important differences with mammalian or human MHC were observed: (1) The allelic/haplotype diversification levels of classical MHC class I genes tend to be much higher than in mammals; (2) Teleost fish classical MHC class I and class II loci are not linked. The present article summarizes previous studies that performed quantitative trait loci (QTL) analysis for mapping differences in teleost fish disease resistance, and discusses them from MHC point of view. Overall, those studies suggest the possible importance of genomic regions including classical MHC class II and nonclassical MHC class I genes, whereas similar observations were not made for the genomic regions with the highly diversified classical MHC class I alleles. The present study is a review and discussion of the fish MHC situation.

Subject Areas

Histocompatibility complex (MHC) genes, disease resistance, fish

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