Abstract:
:An efficient modular synthesis of N(1)-substituted triamines containing different tether lengths between nitrogen centers was developed. A series of N(1)-(9-anthracenylmethyl)triamines were evaluated for biological activity in L1210 (murine leukemia), alpha-difluoromethylornithine (DFMO)-treated L1210, Chinese hamster ovary (CHO), and CHO-MG cell lines. All triamines 8 had increased potency in DFMO-treated L1210 cells. The 4,4- and 5,4-triamine systems had the highest affinity for the polyamine transporter (PAT) with L1210 K(i) values of 1.8 and 1.7 microM, respectively. This trend was also reflected in the CHO studies. Surprisingly, the respective 4,4- and 5,4-triamine systems had 150-fold and 38-fold higher cytotoxicity in CHO cells containing active polyamine transporters. Initial microscopy studies revealed the rapid formation of vesicular structures within A375 melanoma cells treated with the N(1)-(9-anthracenylmethyl)homospermidine (4,4-triamine) conjugate. In summary, the 4,4- and 5,4-triamines were identified as selective vector motifs to ferry anthracene into cells via the PAT.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Wang C,Delcros JG,Biggerstaff J,Phanstiel O 4thdoi
10.1021/jm030028wkeywords:
subject
Has Abstractpub_date
2003-06-19 00:00:00pages
2663-71issue
13eissn
0022-2623issn
1520-4804journal_volume
46pub_type
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