Putative P-glycoprotein expression in arsenite-resistant Leishmania donovani down-regulated by verapamil.

Abstract:

:Western immunoblots of whole cell lysate and crude membrane extract of an in vitro selected sodium m-arsenite-resistant L. donovani strain revealed a 230-kDa protein identified by an anti-P-glycoprotein (Pgp) antibody. Immunofluorescence microscopy, using the same antibody, detected putative Pgp on resistant parasites. Overexpression of the putative Pgp was down-regulated by verapamil. These results provided, possibly, the first evidence that (i) overexpression of Pgp-like protein occurs in arsenite-resistant Leishmania that are cross-resistant to structurally and functionally unrelated drugs and (ii) verapamil regulates drug sensitivity possibly by down-regulating Pgp expression in the arsenite-resistant Leishmania.

authors

Kaur J,Dey CS

doi

10.1006/bbrc.2000.2680

subject

Has Abstract

pub_date

2000-05-19 00:00:00

pages

615-9

issue

3

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(00)92680-9

journal_volume

271

pub_type

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