Title : Colchicine effect on P-glycoprotein expression and activity: in silico and in vitro studies.

Pub. Date : 2014 Jul 25

PMID : 24759273






11 Functional Relationships(s)
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1 Colchicine effect on P-glycoprotein expression and activity: in silico and in vitro studies. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
2 Colchicine is a P-glycoprotein (P-gp) substrate that induces its expression, thus increasing the risk for unexpected pharmacokinetic interactions with this drug. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
3 Colchicine is a P-glycoprotein (P-gp) substrate that induces its expression, thus increasing the risk for unexpected pharmacokinetic interactions with this drug. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
4 Because increased P-gp expression does not always correlate with increased activity of this efflux pump, we evaluated the changes in both P-gp expression and activity induced by colchicine using an in vitro model. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
5 Furthermore, colchicine fitting in P-gp induction and competitive inhibition pharmacophore hypothesis, and docking studies evaluating the interaction between colchicine and P-gp drug binding pocket were tested in silico. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
6 Furthermore, colchicine fitting in P-gp induction and competitive inhibition pharmacophore hypothesis, and docking studies evaluating the interaction between colchicine and P-gp drug binding pocket were tested in silico. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
7 Moreover, colchicine significantly increased P-gp ATPase activity, demonstrating to be actively transported by the pump. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
8 Colchicine fitted both the P-gp induction and competitive inhibition models. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
9 In silico, colchicine was predicted to bind to the P-gp drug-binding pocket suggesting a competitive mechanism of transport. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
10 These results show that colchicine induced P-gp expression in Caco-2 cells but the activity of the protein remained unchanged, highlighting the need to simultaneously evaluate P-gp expression and activity. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens
11 These results show that colchicine induced P-gp expression in Caco-2 cells but the activity of the protein remained unchanged, highlighting the need to simultaneously evaluate P-gp expression and activity. Colchicine ATP binding cassette subfamily B member 1 Homo sapiens