Masse, Karine, Kyuno, Jun-ichi, Bhamra, Surinder and Jones, Elizabeth A.. (2010) The lysophosphatidic acid (LPA) and sphingosine-1-phosphate (S1P) receptor gene families: cloning and comparative expression analysis in Xenopus laevis. International Journal of Developmental Biology, Vol.54 (No.8-9). pp. 1361-1374. ISSN 0214-6282

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Abstract

Sphingosine-1-phosphate (S1P) and lysophosphatidic acid (LPA) are endogenous bioactive lipids which mediate a variety of biological cell responses such as cell proliferation, migration, differentiation and apoptosis. Their actions are mediated by binding to the G-protein-coupled endothelial differentiation gene (Edg) receptor subfamily, referred to as S1P1-5 and LPA1-5, and regulate a variety of signalling pathways involved in numerous physiological processes and pathological conditions. Their importance during embryogenesis has been demonstrated by the generation of knock-out mice and specific roles have been assigned to these receptors. However, potential functional redundancy and the lethality of some mutants have complicated functional analysis in these models. Here we report the cloning of the S1P and LPA receptors in Xenopus laevis and tropicalis. Phylogenetic analyses demonstrate the high level of conservation of these receptors between amphibian and other vertebrate species. We have conducted a comparative expression analysis of these receptors during development and in the adult frog, by both RT-PCR and whole mount in situ hybridisation. In particular, we show that S1P1, 2 and 5 display distinct embryonic specific expression patterns, suggesting potentially different developmental roles for these receptors, and therefore for their ligands, during amphibian embryogenesis.

Item Type:	Journal Article
Subjects:	Q Science > QH Natural history > QH301 Biology
Divisions:	Faculty of Science > Life Sciences (2010- ) > Biological Sciences ( -2010)
Journal or Publication Title:	International Journal of Developmental Biology
Publisher:	Universidad del Pais Vasco * Servicio Editorial
ISSN:	0214-6282
Date:	2010
Volume:	Vol.54
Number:	No.8-9
Number of Pages:	14
Page Range:	pp. 1361-1374
Identification Number:	10.1387/ijdb.103068km
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Wellcome Trust
Grant number:	082071
URI:	http://wrap.warwick.ac.uk/id/eprint/4747

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