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2003 | 50 | 4 |

Tytuł artykułu

Degradation of extracellular nucleotides and their analogs in HeLa and HUVEC cell cultures

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The use of nucleotides and their analogs in the pharmacological studies of nucleo­tide receptors (P2 class) should be preceded by detailed studies on their degradation connected with ecto-enzymes of a given cell type. In the present studies we have ana­lyzed stability of some phosphorothioate and phosphonate analogs of ATP and ADP in the HeLa epitheloid carcinoma and endothelial HUVEC cells cultures. Our studies have revealed that ecto-nucleotide pyrophosphatase (E-NPP) is one of the main en­zymes involved in the extracellular degradation of ATP and other nucleotides in the HeLa cells. On the other hand, the ecto-ATPDase is responsible for the hydrolysis of extracellular nucleotides in human endothelial cell cultures, while the E-NPP-like en­zymes of the HUVEC cells are not essential to this degradation. The concerted action of the aforementioned ecto-enzymes and nucleotide pyrophosphatase, 5 -nucleo- tidase and adenosine deaminase present in fetal bovine serum (FBS) supplied to the culture medium, results in partial or complete degradation of the phosphorothioate (ATPγS) and phosphonate analogs of adenosine nucleotides (α,β-methylene-ATP and β,γ-methylene-ATP) in the cell cultures. Only ADPβS appears to be resistant to these enzymes. The influence of some nucleotides and their analogs on the proliferation of the HeLa cells in presence or absence of FBS is also discussed.

Wydawca

-

Rocznik

Tom

50

Numer

4

Opis fizyczny

p.973-984,fig.,ref.

Twórcy

  • Polish Academy of Sciences, Lodz, Poland
autor
autor

Bibliografia

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Typ dokumentu

Bibliografia

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Identyfikator YADDA

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