Linked Life Data

16125849

Source:http://linkedlifedata.com/resource/pubmed/id/16125849

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2005-11-25
pubmed:abstractText
The occurrence and the novel function of glyceraldehyde-3-phosphate dehydrogenase (GAPDH) in the extracellular space were studied. The extracellular GAPDH with the same molecular mass as the intracellular GAPDH was detected in the conditioned medium of mammalian cultured cell lines such as COS-7, HEK293, MCF-7, HepG2, PC-12, and Neuro-2a cells. Western blot analysis represented the occurrence of GAPDH, but not alpha-tubulin (an intracellular marker protein), in the conditioned medium of COS-7 cells. Furthermore, GAPDH was found in rat serum. These results indicate that GAPDH was secreted outside of the cells. Addition of GAPDH to the cultured medium of COS-7, HEK293, and HepG2 cells allowed cells to undergo morphological changes. In COS-7 cells, the extracellular GAPDH inhibited cell spreading without influencing the cell growth. Western blot and immunofluorescent microscopy analyses revealed that the extracellular GAPDH bound to COS-7 cells in time- and dose-dependent manners. However, a mutant substituting Ser for Cys at position 151 of GAPDH resulted in no binding to the cells, no decreased cell-spreading efficiency and no cell morphological changes. These results indicate that the Cys151 was involved in the binding of GAPDH to cells and the GAPDH-inhibited cell spreading.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0006-3002
pubmed:author
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
1726
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
261-71
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2005
pubmed:articleTitle
Glyceraldehyde-3-phosphate dehydrogenase in the extracellular space inhibits cell spreading.
pubmed:affiliation
Division of Applied Life Sciences, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Sakai, Osaka 5998531, Japan. yamaji@biochem.osakafu-u.ac.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't