Characterisation of bovine leukocyte Ig-like receptors.

Leukocyte Immunoglobulin-like receptors (LILR) are innate immune receptors involved in regulating both innate and adaptive immune functions. LILR show more interspecies conservation than the closely related Killer Ig-like receptors, and homologues have been identified in rodents, primates, seals and...

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Main Authors: Louise Hogan, Sabin Bhuju, Des C Jones, Ken Laing, John Trowsdale, Philip Butcher, Mahavir Singh, Martin Vordermeier, Rachel L Allen
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2012-01-01
Series:PLoS ONE
Online Access:https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0034291&type=printable
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author Louise Hogan
Sabin Bhuju
Des C Jones
Ken Laing
John Trowsdale
Philip Butcher
Mahavir Singh
Martin Vordermeier
Rachel L Allen
author_facet Louise Hogan
Sabin Bhuju
Des C Jones
Ken Laing
John Trowsdale
Philip Butcher
Mahavir Singh
Martin Vordermeier
Rachel L Allen
author_sort Louise Hogan
collection DOAJ
description Leukocyte Immunoglobulin-like receptors (LILR) are innate immune receptors involved in regulating both innate and adaptive immune functions. LILR show more interspecies conservation than the closely related Killer Ig-like receptors, and homologues have been identified in rodents, primates, seals and chickens. The murine equivalents, paired Ig-like receptors (PIR), contain two additional immunoglobulin domains, but show strong sequence and functional similarities to human LILR. The bovine genome was recently sequenced, with preliminary annotations indicating that LILR were present in this species. We therefore sought to identify and characterize novel LILR within the Bos taurus genome, compare these phylogenetically with LILR from other species and determine whether they were expressed in vivo. Twenty six potential bovine LILR were initially identified using BLAST and BLAT software. Phylogenetic analysis constructed using the neighbour-joining method, incorporating pairwise deletion and confidence limits estimated from 1000 replicates using bootstrapping, indicated that 16 of these represent novel bovine LILR. Protein structures defined using protein BLAST predict that the bovine LILR family comprises seven putative inhibitory, four activating and five soluble receptors. Preliminary expression analysis was performed by mapping the predicted sequences with raw data from total transcript sequence generated using Genome Analyzer IIx (Illumina) to provide evidence that all 16 of these receptors are expressed in vivo. The bovine receptor family appears to contain receptors which resemble the six domain rodent PIR as well as the four domain LILR found in other species.
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spelling doaj-art-dbe652f2cc714fdab0038aa4558a6e192025-08-20T03:09:47ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-0174e3429110.1371/journal.pone.0034291Characterisation of bovine leukocyte Ig-like receptors.Louise HoganSabin BhujuDes C JonesKen LaingJohn TrowsdalePhilip ButcherMahavir SinghMartin VordermeierRachel L AllenLeukocyte Immunoglobulin-like receptors (LILR) are innate immune receptors involved in regulating both innate and adaptive immune functions. LILR show more interspecies conservation than the closely related Killer Ig-like receptors, and homologues have been identified in rodents, primates, seals and chickens. The murine equivalents, paired Ig-like receptors (PIR), contain two additional immunoglobulin domains, but show strong sequence and functional similarities to human LILR. The bovine genome was recently sequenced, with preliminary annotations indicating that LILR were present in this species. We therefore sought to identify and characterize novel LILR within the Bos taurus genome, compare these phylogenetically with LILR from other species and determine whether they were expressed in vivo. Twenty six potential bovine LILR were initially identified using BLAST and BLAT software. Phylogenetic analysis constructed using the neighbour-joining method, incorporating pairwise deletion and confidence limits estimated from 1000 replicates using bootstrapping, indicated that 16 of these represent novel bovine LILR. Protein structures defined using protein BLAST predict that the bovine LILR family comprises seven putative inhibitory, four activating and five soluble receptors. Preliminary expression analysis was performed by mapping the predicted sequences with raw data from total transcript sequence generated using Genome Analyzer IIx (Illumina) to provide evidence that all 16 of these receptors are expressed in vivo. The bovine receptor family appears to contain receptors which resemble the six domain rodent PIR as well as the four domain LILR found in other species.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0034291&type=printable
spellingShingle Louise Hogan
Sabin Bhuju
Des C Jones
Ken Laing
John Trowsdale
Philip Butcher
Mahavir Singh
Martin Vordermeier
Rachel L Allen
Characterisation of bovine leukocyte Ig-like receptors.
PLoS ONE
title Characterisation of bovine leukocyte Ig-like receptors.
title_full Characterisation of bovine leukocyte Ig-like receptors.
title_fullStr Characterisation of bovine leukocyte Ig-like receptors.
title_full_unstemmed Characterisation of bovine leukocyte Ig-like receptors.
title_short Characterisation of bovine leukocyte Ig-like receptors.
title_sort characterisation of bovine leukocyte ig like receptors
url https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0034291&type=printable
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