title: Cloning, characterisation, and comparative quantitative expression analyses of receptor for advanced glycation end products (RAGE) transcript forms.
abstract: RAGE is a member of the immunoglobulin superfamily of cell surface molecules playing key roles in pathophysiological processes, e.g. immune/inflammatory disorders, Alzheimer's disease, diabetic arteriosclerosis and tumourigenesis. In humans 19 naturally occurring RAGE splicing variants resulting in either N-terminally or C-terminally truncated proteins were identified and are lately discussed as mechanisms for receptor regulation. Accordingly, deregulation of sRAGE levels has been associated with several diseases e.g. Alzheimer's disease, Type 1 diabetes, and rheumatoid arthritis. Administration of recombinant sRAGE to animal models of cancer blocked tumour growth successfully. In spite of its obvious relationship to cancer and metastasis data focusing sRAGE deregulation and tumours is rare. In this study we screened a set of tumours, healthy tissues and various cancer cell lines for RAGE splicing variants and analysed their structure. Additionally, we analysed the ratio of the mainly found transcript variants using quantitative Real-Time PCR. In total we characterised 24 previously not described canine and 4 human RAGE splicing variants, analysed their structure, classified their characteristics, and derived their respective protein forms. Interestingly, the healthy and the neoplastic tissue samples showed in majority RAGE transcripts coding for the complete receptor and transcripts showing insertions of intron 1.
authors.affiliation: Small Animal Clinic and Research Cluster of Excellence REBIRTH, University of Veterinary Medicine, Bischofsholer Damm 15, D-30173 Hannover, Germany.
authors.forename: Katharina A
authors.initials: KA
authors.lastname: Sterenczak
authors.forename: Saskia
authors.initials: S
authors.lastname: Willenbrock
authors.forename: Matthias
authors.initials: M
authors.lastname: Barann
authors.forename: Markus
authors.initials: M
authors.lastname: Klemke
authors.forename: Jan T
authors.initials: JT
authors.lastname: Soller
authors.forename: Nina
authors.initials: N
authors.lastname: Eberle
authors.forename: Ingo
authors.initials: I
authors.lastname: Nolte
authors.forename: Jörn
authors.initials: J
authors.lastname: Bullerdiek
authors.forename: Hugo
authors.initials: H
authors.lastname: Murua Escobar
mesh_terms: D017398:Alternative Splicing / Q000235:genetics; D000818:Animals; D002460:Cell Line; D003001:Cloning, Molecular; D004285:Dogs; D005786:Gene Expression Regulation; D006801:Humans; D007438:Introns / Q000235:genetics; D016366:Open Reading Frames / Q000235:genetics; D020033:Protein Isoforms / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic / Q000235:genetics* / Q000378:metabolism; D020133:Reverse Transcriptase Polymerase Chain Reaction
chemical_list: D020033:Protein Isoforms; D012333:RNA, Messenger; D000067759:Receptor for Advanced Glycation End Products; D011971:Receptors, Immunologic