Abstract:
:Multidrug resistance (MDR) mediated by P-glycoprotein (Pgp) remains the major obstacle for successful treatment of cancer. Inhibition of Pgp transport is important for higher efficacy of anticancer drugs. Lipophilic cationogenic amines with at least one tertiary N atom, such as verapamil, are classical PgP-blocking agents. In a search for novel accessible compounds potent against MDR tumor cells, we synthesized a series of arylalkylamines that contain isoprenoid side chains of different length. Two out of seven new analogues of the known N,N'-bis(3,4-dimethoxybenzyl)-N-solanesylethylenediamine (SDB-ethylenediamine), namely, compounds with C10 and C15 side chains, at low micromolar concentrations were preferentially toxic for several mammalian tumor cell lines that acquired MDR during prolonged drug selection. Moreover, at noncytotoxic concentrations, these compounds potently sensitized MDR cells to Pgp substrates vinblastine and adriamycin. We conclude that these analogues of SDB-ethylenediamine may have dual therapeutic advantage because (i) they are preferentially toxic for MDR cells when administered alone and (ii) they potentiate the cytotoxicity of Pgp-transported anticancer drugs.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Sidorova TA,Nigmatov AG,Kakpakova ES,Stavrovskaya AA,Gerassimova GK,Shtil AA,Serebryakov EPdoi
10.1021/jm011010tkeywords:
subject
Has Abstractpub_date
2002-11-21 00:00:00pages
5330-9issue
24eissn
0022-2623issn
1520-4804pii
jm011010tjournal_volume
45pub_type
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