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Genomic organization and classification of the bovine WC1 genes and expression by peripheral blood gamma delta T cells.
- Source :
-
BMC genomics [BMC Genomics] 2009 Apr 24; Vol. 10, pp. 191. Date of Electronic Publication: 2009 Apr 24. - Publication Year :
- 2009
-
Abstract
- Background: WC1 co-receptors are group B scavenger receptor cysteine-rich molecules that are found exclusively on gammadeltaT cells and are thought to be encoded by a multi-gene family. Previous studies have shown gammadeltaT cells that respond to a particular stimulus have unique WC1 molecules expressed. Prior to the onset of the studies described here only one full-length WC1 nucleotide sequence was publicly available, though three WC1 molecules had been distinguished based on monoclonal antibody reactivity. Furthermore, the number of WC1 genes found in the bovine genome and their sequences had not yet been resolved.<br />Results: By annotating the bovine genome Btau&#95;3.1 assembly, here we show the existence of 13 members in the WC1 gene family and their organization within two loci on chromosome 5 including three distinct exon-intron gene structures one of which coded for a potentially more primitive and smaller WC1 molecule that is similar to the swine WC1 gene. We also provide cDNA evidence as verification for many of the annotated sequences and show transcripts for isoforms derived by alternative splicing.<br />Conclusion: It is possible that WC1 diversity contributes to functional differences that have been observed between gammadeltaT cell populations. The studies described here demonstrate that WC1 molecules are encoded by a large, multi-gene family whose transcripts undergo extensive alternative splicing. Similar to other non-rearranging immunoreceptors, it is likely that the WC1 gene repertoire underwent expansion in order to keep pace with rapidly changing ligands.
- Subjects :
- Alternative Splicing
Amino Acid Sequence
Animals
Cattle blood
Chromosome Mapping
Chromosomes, Mammalian genetics
Cluster Analysis
DNA, Complementary chemistry
DNA, Complementary genetics
Databases, Genetic
Gene Expression
Membrane Glycoproteins classification
Molecular Sequence Data
Multigene Family
Receptors, Antigen, T-Cell, gamma-delta metabolism
Reverse Transcriptase Polymerase Chain Reaction
Sequence Analysis, DNA
Sequence Homology, Amino Acid
T-Lymphocyte Subsets cytology
T-Lymphocyte Subsets immunology
Cattle genetics
Genome
Membrane Glycoproteins genetics
T-Lymphocyte Subsets metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1471-2164
- Volume :
- 10
- Database :
- MEDLINE
- Journal :
- BMC genomics
- Publication Type :
- Academic Journal
- Accession number :
- 19393067
- Full Text :
- https://doi.org/10.1186/1471-2164-10-191