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Erucylphospho‐ N,N,N ‐trimethylpropylammonium Shows Substantial Cytotoxicity in Multiple Myeloma Cells
Author(s) -
Yosifov Deyan Y.,
Konstantinov Spiro M.,
Berger Martin R.
Publication year - 2009
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2009.04694.x
Subject(s) - apoptosis , dna fragmentation , programmed cell death , cytotoxicity , poly adp ribose polymerase , cell culture , caspase , microbiology and biotechnology , fragmentation (computing) , cancer research , chemistry , multiple myeloma , in vitro , biology , immunology , dna , biochemistry , polymerase , genetics , ecology
Multiple myeloma (MM) is a frequent hematological malignancy that is incurable despite recent developments, such as proteasome and angiogenic inhibitors. Erucylphospho‐ N,N,N ‐trimethylpropylammonium (erufosine) is an i.v. injectable alkylphosphocholine with antineoplastic activity based on an unusual mode of action and is currently undergoing clinical trials in leukemia patients. The aim of this investigation was to evaluate the efficacy of erufosine in MM cells and to study the modulation of cell‐death pathways. The cytotoxicity of erufosine against three MM cell lines (RPMI‐8226, U‐266, and OPM‐2) was determined by the 3‐(4,5‐dimethylthiazol‐2‐yl)‐2,5‐diphenyltetrazolium bromide‐dye reduction assay. All MM cell lines responded to erufosine, RPMI‐8226 cells being most and U‐266 being least sensitive. The respective IC 50 values were 3.2 and 16.2 μmol/L. Various cell‐death characteristics were studied in response to erufosine, such as morphological changes, oligonucleosomal DNA fragmentation, caspase activation, and poly (ADP)‐ribose polymerase cleavage. Erufosine was found to cause cell shrinkage, chromatin condensation, and caspase‐8 and ‐3 activation. Taken together, our data indicate that erufosine is a potential antimyeloma drug eliciting specific features of apoptotic cell death in vitro .