Nucleoside transport and metabolism in lymphocytes, polymorphonuclear cells and cerebral synaptosomes

M. Staub, M. Sasvari-Szekely, M. Solymossy, K. Szikla

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The salvage of nucleosides dominates over de novo biosynthesis in lymphocytes, polymorphonuclear cells (PMN) and in central neutral nervous system (CNS) in higher organisms. Earlier works in our laboratory have shown that the salvage of deoxycytidine (dCyd) did not correlate with DNA synthesis. The uptake and metabolism of dCyd was higher in undifferentiated germinal center lymphocytes and in follicles comparing to more differentiated cells. Recently we have compared the transport of thymidine (dThd), dCyd, uridine (Urd) and adenosine (Ado) in the three cell systems in which the salvage of nucleosides is dominating. It was found that dCyd was transported 30 times more effectively into lymphocytes than into PMN and synaptosomes, while Urd was transported about the same rate into the two cells and into synaptosomes. All transport processes could be inhibited by dipiridamole, NBRPR, papaverine and dilazep. The dCyd and dThd was phosphorylated even at 0°C up to TTP and dCTP without incorporation into DNA and into liponucleotides. Our results show that the processes of transport- phosphorylation, as well as the processes of DNA-CDP-phospholipid synthesis are tightly coupled to each other in intact cells and organelles.

Original languageEnglish
Pages (from-to)769-774
Number of pages6
JournalAdvances in Experimental Medicine and Biology
Volume370
Publication statusPublished - 1995

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Deoxycytidine
Lymphocytes
Synaptosomes
Nucleosides
Metabolism
Salvaging
Uridine
DNA
Dilazep
Cytidine Diphosphate
Papaverine
Phosphorylation
Biosynthesis
Neurology
Germinal Center
Adenosine
Thymidine
Phospholipids
Organelles
Central Nervous System

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

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abstract = "The salvage of nucleosides dominates over de novo biosynthesis in lymphocytes, polymorphonuclear cells (PMN) and in central neutral nervous system (CNS) in higher organisms. Earlier works in our laboratory have shown that the salvage of deoxycytidine (dCyd) did not correlate with DNA synthesis. The uptake and metabolism of dCyd was higher in undifferentiated germinal center lymphocytes and in follicles comparing to more differentiated cells. Recently we have compared the transport of thymidine (dThd), dCyd, uridine (Urd) and adenosine (Ado) in the three cell systems in which the salvage of nucleosides is dominating. It was found that dCyd was transported 30 times more effectively into lymphocytes than into PMN and synaptosomes, while Urd was transported about the same rate into the two cells and into synaptosomes. All transport processes could be inhibited by dipiridamole, NBRPR, papaverine and dilazep. The dCyd and dThd was phosphorylated even at 0°C up to TTP and dCTP without incorporation into DNA and into liponucleotides. Our results show that the processes of transport- phosphorylation, as well as the processes of DNA-CDP-phospholipid synthesis are tightly coupled to each other in intact cells and organelles.",
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AU - Sasvari-Szekely, M.

AU - Solymossy, M.

AU - Szikla, K.

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