Relative abilities of bis(ethyl) derivatives of putrescine, spermidine, and spermine to regulate polyamine biosynthesis and inhibit L1210 leukemia cell growth

C. W. Porter, J. McManis, Robert A Casero, R. J. Bergeron

Research output: Contribution to journalArticle

Abstract

It has been shown previously (Porter et al., Cancer Res., 45: 2050-2057, 1985) that the N1,N8-bis(ethyl) derivative of spermidine has significant antiproliferative activity which appears to derive from its regulatory effects on the polyamine biosynthetic pathway, particularly on ornithine decarboxylase activity. In the present study, N1,N4-bis(ethyl)putrescine (BEP) and N1,N12-bis(ethyl)spermine (BESm) were compared with N1,N8-bis(ethyl)spermidine (BES) in their ability to inhibit cell growth and regulate polyamine biosynthesis. With cultured L1210 murine leukemia cells, the IC50 values at 48 h were ~2 mM for BEP, 30 μM for BES, and 1 μM for BESm making the latter the most effective polyamine inhibitor or analogue thus far identified. At concentrations which approximated IC50 values and yielded similar intracellular concentrations at 48 h (1500-2000 pmol/106 cells), the effects of the analogues on polyamine biosynthesis generally correlated with their antiproliferative activity. BEP, at 1 mM, exerted relatively minor effects on polyamine biosynthesis. By contrast, 100 μM BES totally eliminated ornithine decarboxylase activity, depleted putrescine and spermidine pools, and decreased spermine pools by 40%. AdoMet decarboxylase activity was lowered slightly. The most impressive effects were obtained with 10 μM BESm which decreased ornithine and AdoMet decarboxylase activities by 99 and 84%, respectively; depleted putrescine and spermidine pools; and decreased spermine pools by 73%. None of the analogues, at 1 or 3 mM, had significant direct inhibitory effects on the decarboxylase activities from untreated cells with the exception of BESm which inhibited ornithine but not AdoMet decarboxylase activity. Thus, the effects of the analogues on these enzymes in treated cells are presumed to be mainly mediated by regulatory mechanisms. In this regard, BESm was superior to BES since both ornithine and AdoMet decarboxylase activities were suppressed. Given its unique activities, BESm would seem to have potential as both an antiproliferative agent and also as an experimental probe for studying regulation of the polyamine pathway, particularly AdoMet decarboxylase.

Original languageEnglish (US)
Pages (from-to)2821-2825
Number of pages5
JournalCancer Research
Volume47
Issue number11
StatePublished - 1987

Fingerprint

Leukemia L1210
Putrescine
Spermidine
Spermine
Polyamines
S-Adenosylmethionine
Ornithine Decarboxylase
Carboxy-Lyases
Growth
Inhibitory Concentration 50
Ornithine
Biosynthetic Pathways
BES
Enzymes

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

Cite this

Relative abilities of bis(ethyl) derivatives of putrescine, spermidine, and spermine to regulate polyamine biosynthesis and inhibit L1210 leukemia cell growth. / Porter, C. W.; McManis, J.; Casero, Robert A; Bergeron, R. J.

In: Cancer Research, Vol. 47, No. 11, 1987, p. 2821-2825.

Research output: Contribution to journalArticle

@article{85474daef8444f47a48a4c9b7eb74175,
title = "Relative abilities of bis(ethyl) derivatives of putrescine, spermidine, and spermine to regulate polyamine biosynthesis and inhibit L1210 leukemia cell growth",
abstract = "It has been shown previously (Porter et al., Cancer Res., 45: 2050-2057, 1985) that the N1,N8-bis(ethyl) derivative of spermidine has significant antiproliferative activity which appears to derive from its regulatory effects on the polyamine biosynthetic pathway, particularly on ornithine decarboxylase activity. In the present study, N1,N4-bis(ethyl)putrescine (BEP) and N1,N12-bis(ethyl)spermine (BESm) were compared with N1,N8-bis(ethyl)spermidine (BES) in their ability to inhibit cell growth and regulate polyamine biosynthesis. With cultured L1210 murine leukemia cells, the IC50 values at 48 h were ~2 mM for BEP, 30 μM for BES, and 1 μM for BESm making the latter the most effective polyamine inhibitor or analogue thus far identified. At concentrations which approximated IC50 values and yielded similar intracellular concentrations at 48 h (1500-2000 pmol/106 cells), the effects of the analogues on polyamine biosynthesis generally correlated with their antiproliferative activity. BEP, at 1 mM, exerted relatively minor effects on polyamine biosynthesis. By contrast, 100 μM BES totally eliminated ornithine decarboxylase activity, depleted putrescine and spermidine pools, and decreased spermine pools by 40{\%}. AdoMet decarboxylase activity was lowered slightly. The most impressive effects were obtained with 10 μM BESm which decreased ornithine and AdoMet decarboxylase activities by 99 and 84{\%}, respectively; depleted putrescine and spermidine pools; and decreased spermine pools by 73{\%}. None of the analogues, at 1 or 3 mM, had significant direct inhibitory effects on the decarboxylase activities from untreated cells with the exception of BESm which inhibited ornithine but not AdoMet decarboxylase activity. Thus, the effects of the analogues on these enzymes in treated cells are presumed to be mainly mediated by regulatory mechanisms. In this regard, BESm was superior to BES since both ornithine and AdoMet decarboxylase activities were suppressed. Given its unique activities, BESm would seem to have potential as both an antiproliferative agent and also as an experimental probe for studying regulation of the polyamine pathway, particularly AdoMet decarboxylase.",
author = "Porter, {C. W.} and J. McManis and Casero, {Robert A} and Bergeron, {R. J.}",
year = "1987",
language = "English (US)",
volume = "47",
pages = "2821--2825",
journal = "Journal of Cancer Research",
issn = "0099-7013",
publisher = "American Association for Cancer Research Inc.",
number = "11",

}

TY - JOUR

T1 - Relative abilities of bis(ethyl) derivatives of putrescine, spermidine, and spermine to regulate polyamine biosynthesis and inhibit L1210 leukemia cell growth

AU - Porter, C. W.

AU - McManis, J.

AU - Casero, Robert A

AU - Bergeron, R. J.

PY - 1987

Y1 - 1987

N2 - It has been shown previously (Porter et al., Cancer Res., 45: 2050-2057, 1985) that the N1,N8-bis(ethyl) derivative of spermidine has significant antiproliferative activity which appears to derive from its regulatory effects on the polyamine biosynthetic pathway, particularly on ornithine decarboxylase activity. In the present study, N1,N4-bis(ethyl)putrescine (BEP) and N1,N12-bis(ethyl)spermine (BESm) were compared with N1,N8-bis(ethyl)spermidine (BES) in their ability to inhibit cell growth and regulate polyamine biosynthesis. With cultured L1210 murine leukemia cells, the IC50 values at 48 h were ~2 mM for BEP, 30 μM for BES, and 1 μM for BESm making the latter the most effective polyamine inhibitor or analogue thus far identified. At concentrations which approximated IC50 values and yielded similar intracellular concentrations at 48 h (1500-2000 pmol/106 cells), the effects of the analogues on polyamine biosynthesis generally correlated with their antiproliferative activity. BEP, at 1 mM, exerted relatively minor effects on polyamine biosynthesis. By contrast, 100 μM BES totally eliminated ornithine decarboxylase activity, depleted putrescine and spermidine pools, and decreased spermine pools by 40%. AdoMet decarboxylase activity was lowered slightly. The most impressive effects were obtained with 10 μM BESm which decreased ornithine and AdoMet decarboxylase activities by 99 and 84%, respectively; depleted putrescine and spermidine pools; and decreased spermine pools by 73%. None of the analogues, at 1 or 3 mM, had significant direct inhibitory effects on the decarboxylase activities from untreated cells with the exception of BESm which inhibited ornithine but not AdoMet decarboxylase activity. Thus, the effects of the analogues on these enzymes in treated cells are presumed to be mainly mediated by regulatory mechanisms. In this regard, BESm was superior to BES since both ornithine and AdoMet decarboxylase activities were suppressed. Given its unique activities, BESm would seem to have potential as both an antiproliferative agent and also as an experimental probe for studying regulation of the polyamine pathway, particularly AdoMet decarboxylase.

AB - It has been shown previously (Porter et al., Cancer Res., 45: 2050-2057, 1985) that the N1,N8-bis(ethyl) derivative of spermidine has significant antiproliferative activity which appears to derive from its regulatory effects on the polyamine biosynthetic pathway, particularly on ornithine decarboxylase activity. In the present study, N1,N4-bis(ethyl)putrescine (BEP) and N1,N12-bis(ethyl)spermine (BESm) were compared with N1,N8-bis(ethyl)spermidine (BES) in their ability to inhibit cell growth and regulate polyamine biosynthesis. With cultured L1210 murine leukemia cells, the IC50 values at 48 h were ~2 mM for BEP, 30 μM for BES, and 1 μM for BESm making the latter the most effective polyamine inhibitor or analogue thus far identified. At concentrations which approximated IC50 values and yielded similar intracellular concentrations at 48 h (1500-2000 pmol/106 cells), the effects of the analogues on polyamine biosynthesis generally correlated with their antiproliferative activity. BEP, at 1 mM, exerted relatively minor effects on polyamine biosynthesis. By contrast, 100 μM BES totally eliminated ornithine decarboxylase activity, depleted putrescine and spermidine pools, and decreased spermine pools by 40%. AdoMet decarboxylase activity was lowered slightly. The most impressive effects were obtained with 10 μM BESm which decreased ornithine and AdoMet decarboxylase activities by 99 and 84%, respectively; depleted putrescine and spermidine pools; and decreased spermine pools by 73%. None of the analogues, at 1 or 3 mM, had significant direct inhibitory effects on the decarboxylase activities from untreated cells with the exception of BESm which inhibited ornithine but not AdoMet decarboxylase activity. Thus, the effects of the analogues on these enzymes in treated cells are presumed to be mainly mediated by regulatory mechanisms. In this regard, BESm was superior to BES since both ornithine and AdoMet decarboxylase activities were suppressed. Given its unique activities, BESm would seem to have potential as both an antiproliferative agent and also as an experimental probe for studying regulation of the polyamine pathway, particularly AdoMet decarboxylase.

UR - http://www.scopus.com/inward/record.url?scp=0023223138&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023223138&partnerID=8YFLogxK

M3 - Article

VL - 47

SP - 2821

EP - 2825

JO - Journal of Cancer Research

JF - Journal of Cancer Research

SN - 0099-7013

IS - 11

ER -