NDLI: Catfish CC chemokines: genomic clustering, duplications, and expression after bacterial infection with Edwardsiella ictaluri

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Catfish CC chemokines: genomic clustering, duplications, and expression after bacterial infection with Edwardsiella ictaluri

Content Provider	Springer Nature Link
Author	Peatman, Eric Bao, Baolong Peng, Xu Baoprasertkul, Puttharat Brady, Yolanda Liu, Zhanjiang
Copyright Year	2005
Abstract	Chemokines are a family of structurally related chemotactic cytokines that regulate the migration of leukocytes, under both physiological and inflammatory conditions. CC chemokines represent the largest subfamily of chemokines with 28 genes in mammals. Sequence conservation of chemokines between teleost fish and higher vertebrates is low and duplication and divergence may have occurred at a significantly faster rate than in other genes. One feature of CC chemokine genes known to be conserved is genomic clustering. CC chemokines are highly clustered within the genomes of human, mouse, and chicken. To exploit knowledge from comparative genome analysis between catfish and higher vertebrates, here we mapped to bacterial artificial chromosome (BAC) clones 26 previously identified catfish (Ictalurus sp.) chemokine cDNAs. Through a combination of hybridization and fluorescent fingerprinting, 18 fingerprinted contigs were assembled from BACs containing catfish CC chemokine genes. The catfish CC chemokine genes were found to be not only highly clustered in the catfish genome, but also extensively duplicated at various levels. Comparisons of the syntenic relationships of CC chemokines may help to explain the modes of duplication and divergence that resulted in the present repertoire of vertebrate CC chemokines. Here we have also analyzed the expression of the transcripts of the 26 catfish CC chemokines in head kidney and spleen in response to bacterial infection of Edwardsiella ictaluri, an economically devastating catfish pathogen. Such information should pinpoint research efforts on the CC chemokines most likely involved in inflammatory responses.
Starting Page	297
Ending Page	309
Page Count	13
File Format	PDF
ISSN	16174615
Journal	Molecular and General Genetics MGG
Volume Number	275
Issue Number	3
e-ISSN	16174623
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-12-08
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Chemokine Fish Catfish Gene Comparative Duplication Animal Genetics and Genomics Plant Genetics & Genomics Microbial Genetics and Genomics Biochemistry Cell Biology
Content Type	Text
Resource Type	Article
Subject	Genetics Medicine Molecular Biology

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Catfish CC chemokines: genomic clustering, duplications, and expression after bacterial infection with Edwardsiella ictaluri