Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1999-7-30
pubmed:abstractText
In the previous study we have found that Djungarian hamster fibroblasts with high levels of multidrug resistance (MDR) (colchicine-resistance index RI of 1000 to 42000) produce soluble factor(s) communicating MDR to the drug-sensitive cells of the same species by elevating the functional activity of P-glycoprotein (Pgp). Here we have shown that these cells can influence human tumor cells in the same fashion. Rat hepatoma McA RH7777 cells and their colchicine-resistant derivatives are shown to produce a factor with similar effects (induction of MDR and Pgp functional activity in the drug-sensitive cells). These effects seem to depend on the drug resistance level of the donor cells. Our results show that induction of the Pgp-mediated MDR is not species-specific and the tumor cells with intrinsic MDR (arising from the tissue with a high level of Pgp expression) can produce a factor(s) communicating this type of drug resistance to the sensitive cells.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1023-6597
pubmed:author
pubmed:issnType
Print
pubmed:volume
12
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
469-79
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Induction of P-glycoprotein functional activity and multidrug resistance by a soluble factor(s) produced by some mammalian cells.
pubmed:affiliation
Institute of Carcinogenesis, Blokhin Cancer Research Center, Russian Academy of Medical Sciences, Moscow.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't