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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1996-10-8
pubmed:abstractText
Expression of CD44, particularly of certain splice variants, has been linked to tumor progression and metastatic potential in a number of different animal and human cancers. Although differential expression of CD44 standard epitopes (CD44s) in human brain tumors has been reported, the expression of CD44 variant exon encoded sequences (CD44v) in primary brain tumors in situ has not been studied in detail. In the present study, the expression of CD44s and CD44v epitopes was analyzed immunohistochemically on frozen sections of primary brain tumors. In addition, the expression of CD44 on cultured glioma cells was investigated by immunofluorescence flow cytometry. The results demonstrate the presence of CD44s epitopes and of CD44 splice variants containing CD44v4, v5 and v10 sequences in various types of brain tumors. A subgroup of highly malignant gliomas showed a strong (focal) expression of CD44v5. CD44v6 was absent in all brain tumors examined. CD44s appeared to be the dominant form of CD44 expressed in primary brain tumors, its expression was not correlated with tumor grade. We envisage that CD44 isoforms, in particular CD44s, may contribute to the invasive character of primary tumors by interacting with hyaluronate, one of the most abundant molecules in the extracellular matrix of the brain.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
0167-594X
pubmed:author
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
185-90
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Expression of CD44 splice variants in human primary brain tumors.
pubmed:affiliation
Department of Neurosurgery, University of Amsterdam, Netherlands.
pubmed:publicationType
Journal Article, Comparative Study