Title

A comparison of structure-activity relationships between spermidine and spermine analogue antineoplastics

Abstract

A systematic investigation of the impact of spermidine analogues both in vitro and in vivo is described. The study characterizes the effects of these analogues on L1210 cell growth, polyamine pools, ornithine decarboxylase, S- adenosyl-L-methionine decarboxylase, spermidine/spermine N1- acetyltransferase, the maintenance of cellular charge, i.e., cationic equivalence associated with the polyamines and their analogues, and compares their ability to compete with spermidine for transport. The findings clearly demonstrate that the activity of the linear polyamine analogues is highly dependent on the length of the triamines and the size of the N(α),N(ω)- substituents. It appears that there is an optimum chain length for various activities and that the larger the N(α)N(ω)-alkyls, the less active the compound. Metabolic transformation including N-dealkylation of these compounds is also evaluated. While there is no monotonic relationship between chain length and the ability of the analogue to be metabolized, the dipropyl triamines are clearly more actively catabolized than the corresponding methyl and ethyl systems. A comparison of the triamines with the corresponding tetraamines is made throughout the text regarding both in vitro activity against L1210 cells and in vivo toxicity measurements, suggesting that several triamine analogues may offer therapeutic advantages over the corresponding tetraamines.

Publication Date

5-9-1997

Publication Title

Journal of Medicinal Chemistry

Volume

40

Issue

10

Number of Pages

1475-1494

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1021/jm960849j

Socpus ID

0031006958 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/0031006958

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