A monoclonal antibody-Pseudomonas toxin conjugate that specifically kills multidrug-resistant cells.

D J FitzGerald, M C Willingham, Carol Cardarelli, Hiroyuki Hamada, T Tsuruo, M M Gottesman, I Pastan

Proceedings of the National Academy of Sciences · 1987 · 146 citations · 24 references

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Abstract

One form of multidrug resistance is due to the expression of a 170-kDa energy-dependent drug efflux pump called P-glycoprotein in the plasma membranes of human cancer cells. We have prepared conjugates of Pseudomonas toxin with the anti-P-glycoprotein monoclonal antibody MRK-16. These anti-P-glycoprotein-toxin conjugates specifically kill multidrug-resistant human KB cells. Similar conjugates could be useful in cancer therapy to reduce or eliminate multidrug-resistant tumor populations in tumors intrinsically resistant to chemotherapy or in populations that become resistant during combination chemotherapy.

References

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