Linked Life Data

20731360

Source:http://linkedlifedata.com/resource/pubmed/id/20731360

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
18
pubmed:dateCreated
2010-9-16
pubmed:abstractText
N(?)-Boc-l-Asp(OBn)-l-Lys(Z)-OtBu (reversin 121, 1), an inhibitor of the P-gp ABC transporter, was used to conceive compounds inhibiting the drug efflux occurring through the Hoechst 33342 and daunorubicin transport sites of P-gp, respectively H and R sites. Replacement of the aspartyl residue by trans-4-hydroxy-l-proline (4(R)Hyp) gave compounds 11 and 15 characterized by half-maximal inhibitory concentrations (IC(50)) of 0.6 and 0.2 ?M, which are 2- and 7-fold lower than that of the parent molecule. The difference in IC(50) between 11 and 15 rests on the carbonyl group of the peptidyl bond, reduced in 15. Those compounds are rather specific of P-gp, having no or limited activity on MRP1 and BCRP. 15 displayed no marked cytotoxicity up to 10-fold its IC(50). Importantly, 15 equally inhibited the Hoechst 33342 and daunorubicin effluxes through a typical noncompetitive inhibition mechanism, suggesting its binding to a site different from the H and R drug-transport sites.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Sep
pubmed:issn
1520-4804
pubmed:author
pubmed:issnType
Electronic
pubmed:day
23
pubmed:volume
53
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6720-9
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Potent and fully noncompetitive peptidomimetic inhibitor of multidrug resistance P-glycoprotein.
pubmed:affiliation
Laboratoire des Protéines de Résistance aux Agents Chimiothérapeutiques, Equipe Labellisée Ligue 2009, Institut de Biologie et Chimie des Protéines, UMR 5086 CNRS, Université Lyon 1, IFR 128 BioSciences Gerland Lyon-Sud, F-69367 Lyon, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't