Altered conjugate formation and altered apoptosis of multidrug-resistant human leukemia cell line affects susceptibility to killing by activated natural killer (NK) cells.

Abstract excerpt

Most leukemias that exhibit P-glycoprotein (P-gp)-associated multidrug resistance (MDR) exhibit reduced susceptibility to immune cytotoxicity mediated by natural killer (NK) cells. To explore this phenomenon we investigated N6/ADR, a doxorubicin-selected, P-gp-positive variant of the human acute lymphoblastic leukemia (ALL) cell line NALM6. Each stage of the NK cytolytic pathway, (binding, activation and killing)...

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