Magnetic-affinity cell sorting of human multidrug-resistant cells.

Padmanabhan, R; Tsuruo, T; Kane, S E; Willingham, M C; Howard, B H; Gottesman, M M; Pastan, I · J Natl Cancer Inst · 1991

basic_science · Level V

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Abstract

We have developed a method for isolating multidrug-resistant cells from a heterogeneous cell population using the magnetic-affinity cell-sorting system. Human KB carcinoma cell lines expressing different amounts of P-glycoprotein have been selected by use of the monoclonal antibody MRK-16 coupled to magnetic particles. This specific, rapid, and sensitive method allows the selection of viable and clonable drug-resistant cells from various drug-resistant human and murine cell populations. This method may prove useful in isolating drug-resistant cells from tumors with heterogeneous P-glycoprotein expression for further analysis.

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