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Inhibition of primary colon carcinoma growth and liver metastasis by the A3 adenosine receptor agonist CF101

Adenosine is a purine nucleoside that acts as a regulatory molecule by binding to specific G-protein-coupled A1, A 2A , A 2B , and A3 cell surface receptors. We have recently demonstrated that adenosine inhibits tumour cell growth and concomitantly stimulates bone marrow cell proliferation via activ...

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Bibliographic Details
Published in:British journal of cancer 2003-10, Vol.89 (8), p.1552-1558
Main Authors: Ohana, G, Bar-Yehuda, S, Arich, A, Madi, L, Dreznick, Z, Rath-Wolfson, L, Silberman, D, Slosman, G, Fishman, P
Format: Article
Language:English
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Summary:Adenosine is a purine nucleoside that acts as a regulatory molecule by binding to specific G-protein-coupled A1, A 2A , A 2B , and A3 cell surface receptors. We have recently demonstrated that adenosine inhibits tumour cell growth and concomitantly stimulates bone marrow cell proliferation via activation of the A3 adenosine receptor (A3AR). In the present study, we show that a synthetic agonist to the A3AR, CF101, at the low nanomolar concentration range, inhibits HCT-116 human colon carcinoma cell growth. This effect was reversed by the selective A3AR antagonist MRS1523, demonstrating the specificity of the response. CF101 (given orally) was efficacious in inhibiting the development of primary tumours in xenograft and syngeneic models in which mice were inoculated subcutaneously with human HCT-116 or murine CT-26 colon carcinoma cells, respectively. Moreover, CF101 suppressed (50%, P
ISSN:0007-0920
1532-1827
DOI:10.1038/sj.bjc.6601315