Molecular mechanisms of loss of beta 2-microglobulin expression in drug-resistant breast cancer sublines and its involvement in drug resistance.


In this study, we investigated the mechanism of the loss or decreased expression of beta 2-microglobulin (beta 2m) in several drug-resistant sublines of MCF-7 and in a doxorubicin (DOX)-resistant variant of the T-47D breast cancer cell line. beta 2m protein and RNA are not expressed in highly metastatic, multidrug-resistant MCF-7/Adr cells with high… (More)


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