Linked Life Data

11309193

Source:http://linkedlifedata.com/resource/pubmed/id/11309193

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
Pt 9
pubmed:dateCreated
2001-4-19
pubmed:abstractText
Heparan sulfate proteoglycans (HSPG) regulate multiple cellular processes and mediate the cellular uptake of numerous molecules. While heparan sulphate glycosaminoglycan chains are known to modulate receptor binding of several heparin-binding proteins, here we show that distinct extracellular matrices direct HSPG to the nucleus. We analyzed HSPG localization in primary corneal fibroblasts, cultured on fibronectin or collagen type I matrices, using confocal laser scanning microscopy and cell fractionation. Image analysis revealed that the nuclear localization of HSPG core proteins was greater when cells were cultured on fibronectin versus collagen. Matrices containing the heparin-binding domain of fibronectin, but not the integrin-activating domain, demonstrated increased nuclear staining of core proteins. Furthermore, activation of protein kinase C with phorbol 12-myristate 13-acetate inhibited nuclear targeting of HSPG in cells on fibronectin, whereas inhibition of protein kinase C with Ro-31-8220 greatly enhanced nuclear localization of HSPG in cells on both collagen and fibronectin. We propose a matrix-dependent mechanism for nuclear localization of cell surface HSPG involving protein kinase C-mediated signaling. Nuclear localization of HSPG might play important roles in regulating nuclear function.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9533
pubmed:author
pubmed:issnType
Print
pubmed:volume
114
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1613-23
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
2001
pubmed:articleTitle
Regulation of heparan sulfate proteoglycan nuclear localization by fibronectin.
pubmed:affiliation
Department of Biochemistry, Boston University School of Medicine, Boston, MA 02118, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't