Linked Life Data

3261204

Source:http://linkedlifedata.com/resource/pubmed/id/3261204

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1988-9-20
pubmed:abstractText
WEHI-231, CH33, and CH31 are B-cell lymphomas that are inhibited in their growth by crosslinking of surface Ig receptors during early G1. This "negative signaling" process can be prevented or reversed under certain conditions. In the present paper, we use a cell synchronization procedure to demonstrate that activation of protein kinase C (PKC) is not involved in the negative signal for growth, but rather that PKC activation prevents growth inhibition when present early in the cell cycle. Indeed, the prevention of negative signaling is only accomplished by active phorbol esters. Moreover, phorbol esters and a calcium ionophore fail to deliver a negative signal under conditions in which anti-Ig can significantly prevent cell cycle progression into S phase, thereby ruling out synergy between PKC and calcium in growth inhibition. Whether phorbol esters reverse negative signaling by preventing internalization of the immune complex or phosphorylation of a critical intracellular protein is discussed.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0008-8749
pubmed:author
pubmed:issnType
Print
pubmed:volume
115
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
195-203
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Lymphoma models for B-cell activation and tolerance. VII. Pathways in anti-Ig-mediated growth inhibition and its reversal.
pubmed:affiliation
Immunology Unit, University of Rochester Cancer Center, New York 14642.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't