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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1998-10-20
pubmed:abstractText
A neural specific protein, CRMP-2 (for Collapsin Response Mediator Protein-2), is considered to mediate collapsin-induced growth cone collapse during neural development. We have isolated the Xenopus homologue of the CRMP-2 (XCRMP-2) cDNA and studied the expression of XCRMP-2 mRNA and protein during neural induction. Induction of XCRMP-2 mRNA and protein expression, like N-CAM, occurred at the midgastrula stage and increased through early neural developmental stages. Whole mount in situ hybridization demonstrated that expression of XCRMP-2 mRNA was localized in neural tissues such as the neural plate and tube at early stages, while its expression in the brain, spinal cord, and eyes was observed at later stages. Immunostaining of Xenopus embryos with the antibody against CRMP-2 also showed that the protein was specifically expressed in the neural tissues at early stages. XCRMP-2 expression was induced by neural inducers such as noggin and chordin which antagonize a neural inhibitor, BMP4. A dominant negative BMP receptor also induced XCRMP-2 expression, suggesting that transcription of XCRMP-2 gene was negatively regulated by the BMP4 signaling. These results indicate that expression of XCRMP-2 is an early response marking neural commitment, and that transcriptional control of XCRMP-2 gene, is one of the targets of BMP4 signaling.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0169-328X
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
57
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
201-10
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:9675418-Amino Acid Sequence, pubmed-meshheading:9675418-Animals, pubmed-meshheading:9675418-Bone Morphogenetic Proteins, pubmed-meshheading:9675418-Embryo, Nonmammalian, pubmed-meshheading:9675418-Embryonic Development, pubmed-meshheading:9675418-Gastrula, pubmed-meshheading:9675418-Gene Expression Regulation, Developmental, pubmed-meshheading:9675418-In Situ Hybridization, pubmed-meshheading:9675418-Intercellular Signaling Peptides and Proteins, pubmed-meshheading:9675418-Molecular Sequence Data, pubmed-meshheading:9675418-Nerve Tissue Proteins, pubmed-meshheading:9675418-Nervous System, pubmed-meshheading:9675418-Polymerase Chain Reaction, pubmed-meshheading:9675418-Semaphorin-3A, pubmed-meshheading:9675418-Sequence Homology, Amino Acid, pubmed-meshheading:9675418-Signal Transduction, pubmed-meshheading:9675418-Transcription, Genetic, pubmed-meshheading:9675418-Xenopus
pubmed:year
1998
pubmed:articleTitle
Xenopus CRMP-2 is an early response gene to neural induction.
pubmed:affiliation
IRSP, SAIC/Frederick, NCI-FCRDC, Frederick, MD 21702-1201, USA. kamatat@mail.ncifcrf.gov
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.