Cell Surface P-Glycoprotein Associated with Multidrug Resistance in Mammalian Cell Lines
Norbert Kartner(Ontario Institute for Cancer Research), John R. Riordan(University of Toronto), Victor Ling(Ontario Institute for Cancer Research)
Cited by 1,002
Abstract
The plasma membranes of hamster, mouse, and human tumor cell lines that display multiple resistance to drugs were examined by gel electrophoresis and immunoblotting. In every case, increased expression of a 170,000-dalton surface antigen was found to be correlated with multidrug resistance. This membrane component is of identical molecular size and shares some immunogenic homology with the previously characterized P-glycoprotein of colchicine-resistant Chinese hamster ovary cells. This finding may have application to cancer therapy.
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