1999
DOI: 10.1016/s0014-5793(99)00873-x
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Influence of polyamines on DNA binding of heat shock and activator protein 1 transcription factors induced by heat shock

Abstract: Polyamine depletion, obtained in FAO cells with specific inhibitors of biosynthetic enzymes, prevents or decreases the accumulation of hsp 70 mRNA following heat shock [Desiderio et al., Hepatology 24 (1996) 150^156]. The present study shows that under conditions of spermidine depletion caused by K K-difluoromethylornithine, the DNA binding capacity of the transcription factor HSF induced by heat shock undergoes a severe and prompt deactivation. Replenishment of the spermidine pool before heat shock re-establ… Show more

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Cited by 21 publications
(16 citation statements)
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References 34 publications
(31 reference statements)
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“…It is well known that the physiological-biochemical activity of di-and polyamines is mainly due to their polycation structure. In all probability, the more number of amine groups in poliamine, the more metabolically active this compound is, because in this way it possesses greater biochemical possibilities to interact with nucleic acids, proteins, hormones and another metabolites characterised by regulating function (Van den Broeck et al 1994;Davis 1997;Tiburcio et al 1997;Laitinen et al 1998;Desideiro et al 1999;Kotzabasis et al 1999). From the studies carried out on the C. vulgaris it was seen that the highest biological activity of spermidine results from the fact that it contains three amine groups of a cation character whereas the lowest activity is noted in agmatine with only one -NH 2 group.…”
Section: Resultsmentioning
confidence: 99%
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“…It is well known that the physiological-biochemical activity of di-and polyamines is mainly due to their polycation structure. In all probability, the more number of amine groups in poliamine, the more metabolically active this compound is, because in this way it possesses greater biochemical possibilities to interact with nucleic acids, proteins, hormones and another metabolites characterised by regulating function (Van den Broeck et al 1994;Davis 1997;Tiburcio et al 1997;Laitinen et al 1998;Desideiro et al 1999;Kotzabasis et al 1999). From the studies carried out on the C. vulgaris it was seen that the highest biological activity of spermidine results from the fact that it contains three amine groups of a cation character whereas the lowest activity is noted in agmatine with only one -NH 2 group.…”
Section: Resultsmentioning
confidence: 99%
“…From publications Shih et al 1982;Smith 1985;Gniazdowska-Skoczek et al 1994;Ye et al 1994;Bajguz and Czerpak 1999;Desideiro et al 1999) it is known that di-and polyamines stimulate the synthesis of ribonucleic acids and proteins by activation of the polymerase of RNA and synthase of aminoacyl-tRNA and stabilisation of ribosomes. Di-and polyamines delay the process of ageing in plants mainly by inhibiting ethylene biosynthesis and weakening the activity of the enzymes: ribonuclease, protease, hydrolase, oxidase and others, which degrade metabolites important for the life of the plant.…”
Section: Resultsmentioning
confidence: 99%
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“…Polyamines have been shown to enhance the binding of several gene regulatory proteins, including NF-IL6, USF, Ig/EBP and ERa to DNA (Panagiotidis et al, 1995;Thomas et al, 1995). In contrast, STAT3 provides an example of a transcription factor binding insensitive to changes in polyamine levels (Desiderio et al, 1999), while Oct-1 binding to DNA was inhibited by increased polyamines (Panagiotidis et al, 1995). Synthetic polyamine analogs disrupted ERa and NF-kB transactivation, suggesting a possible pathway for the growth inhibitory and apoptosis-inducing e ects of polyamine analogs on breast cancer cells.…”
Section: Discussionmentioning
confidence: 99%
“…Polyamines not only stabilize cellular nucleic acids and membranes, but also play a pivotal role in the regulation of gene expression both by altering DNA structure and by modulating protein kinases and transcription factors (2)(3)(4)(5). When young, growing cells have increased polyamine synthesis and higher intracellular concentration; however, with aging, the enzymatic activities for polyamine synthesis and the ability to synthesize polyamine decrease (6,7).…”
mentioning
confidence: 99%