| Literature DB >> 2653233 |
M Volm1, T Efferth, M Bak, J Mattern.
Abstract
Drug-resistant cancer cells with the multidrug-resistance phenotype show overexpression of P-glycoprotein, and we therefore tested carcinoma tissue from five patients with stage III or IV ovarian cancer for P-glycoprotein using 265/F4 and C 219 monoclonal antibodies, prepared against membrane glycoproteins in colchicine-resistant CHO cells. Using immunofluorescence and immunoblotting techniques, one of the tumors showed a positive reaction. Using the pcDR 1.5 clone we found that the same cancer tissue had elevated expression of the genes responsible for multidrug resistance. The demonstration of elevated P-glycoprotein in ovarian carcinomas indicates that P-glycoprotein overexpression is not limited to experimental tumor models.Entities:
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Year: 1989 PMID: 2653233 DOI: 10.1007/bf00931383
Source DB: PubMed Journal: Arch Gynecol Obstet ISSN: 0932-0067 Impact factor: 2.344