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In vivo growth inhibition of leukemia by 4‐amidinoindan‐1‐one 2′‐amidinohydrazone (CGP 48664a), a new inhibitor of S‐adenosylmethionine decarboxylase
Author(s) -
Dorhout Bernard,
Velde Roelf Jakob Te,
Kingma Harri Ferwerdaanneke W.,
De Hoog Elly,
Muskiet Frits A. J.
Publication year - 1995
Publication title -
international journal of cancer
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.475
H-Index - 234
eISSN - 1097-0215
pISSN - 0020-7136
DOI - 10.1002/ijc.2910610212
Subject(s) - spermine , spermidine , putrescine , polyamine , in vivo , ornithine decarboxylase , l1210 cells , adenosylmethionine decarboxylase , intracellular , growth inhibition , cell growth , biology , cell cycle , biochemistry , pharmacology , chemistry , in vitro , cell , cytotoxicity , enzyme , microbiology and biotechnology
We studied the in vivo growth‐inhibitory effect of the new S‐adenosylmethionine decarboxylase inhibitor 4‐amidinoindan‐I‐one 2′‐amidinohydrazone (CGP 48664A). L1210‐bearing DBA‐2 mice were treated with increasing CGP 48664A doses from 1 day after i.p. L1210 cell inoculation. Treatment was continued for 4 days, after which all mice were killed. CGP 48664A caused dose‐related exponential decreases of L1210 cell numbers and spermidine and spermine contents. Putrescine contents increased exponentially. Polyamine changes in spleen and liver were less profound. L1210 growth inhibition was not accompanied by changes in cell cycle phase distribution. It is concluded that CGP 48664A is an effective inhibitor of S‐adenosylmethionine decarboxylase but that CGP 48664A‐induced changes in intracellular polyamine compositions are not necessarily the cause of growth inhibition. © 1995 Wiley‐Liss, Inc .