title: Protein tyrosine phosphatases expression during development of mouse superior colliculus.
abstract: Protein tyrosine phosphatases (PTPs) are key regulators of different processes during development of the central nervous system. However, expression patterns and potential roles of PTPs in the developing superior colliculus remain poorly investigated. In this study, a degenerate primer-based reverse transcription-polymerase chain reaction (RT-PCR) approach was used to isolate seven different intracellular PTPs and nine different receptor-type PTPs (RPTPs) from embryonic E15 mouse superior colliculus. Subsequently, the expression patterns of 11 PTPs (TC-PTP, PTP1C, PTP1D, PTP-MEG2, PTP-PEST, RPTPJ, RPTPε, RPTPRR, RPTPσ, RPTPκ and RPTPγ) were further analyzed in detail in superior colliculus from embryonic E13 to postnatal P20 stages by quantitative real-time RT-PCR, Western blotting and immunohistochemistry. Each of the 11 PTPs exhibits distinct spatiotemporal regulation of mRNAs and proteins in the developing superior colliculus suggesting their versatile roles in genesis of neuronal and glial cells and retinocollicular topographic mapping. At E13, additional double-immunohistochemical analysis revealed the expression of PTPs in collicular nestin-positive neural progenitor cells and RC-2-immunoreactive radial glia cells, indicating the potential functional importance of PTPs in neurogenesis and gliogenesis.
authors.affiliation: Department of Cell Morphology and Molecular Neurobiology, Faculty of Biology, Ruhr-University Bochum, Universitaetsstr 150, 44780, Bochum, Germany.
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Reinhard
authors.forename: Andrea
authors.initials: A
authors.lastname: Horvat-Bröcker
authors.forename: Sebastian
authors.initials: S
authors.lastname: Illes
authors.forename: Angelika
authors.initials: A
authors.lastname: Zaremba
authors.forename: Piotr
authors.initials: P
authors.lastname: Knyazev
authors.forename: Axel
authors.initials: A
authors.lastname: Ullrich
authors.forename: Andreas
authors.initials: A
authors.lastname: Faissner
mesh_terms: D000818:Animals; D000831:Animals, Newborn; D002999:Clone Cells; D005260:Female; D018507:Gene Expression Regulation, Developmental; D015971:Gene Expression Regulation, Enzymologic; D051379:Mice; D011247:Pregnancy; D017027:Protein Tyrosine Phosphatases / Q000096:biosynthesis* / Q000235:genetics; D012333:RNA, Messenger / Q000096:biosynthesis; D013477:Superior Colliculi / Q000196:embryology* / Q000201:enzymology* / Q000254:growth & development
chemical_list: D012333:RNA, Messenger; D017027:Protein Tyrosine Phosphatases