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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Antitumor action of bovine seminal ribonuclease.

Unlike the bovine pancreatic ribonuclease (RNaseA), bovine seminal ribonuclease (BS RNase) displays various biological activities, including antitumor activity, immunosuppressivity, spermatogenicity and embryotoxicity. To learn more about its antitumor effect we tested BS RNase on the growth of 16 cell lines derived from patients with various hematological malignancies. The cells of lymphoid origin were generally more susceptible to BS RNase, administered in the range of concentrations from 2 to 100 micrograms/ml, than the myeloid ones. RNaseA used at the same concentrations did not exert any inhibitory effect. The inhibitory effect of BS RNase persisted in cultured cells after three times wash in complete medium and cell recultivation in fresh medium free of BS RNase. Four cell lines were very little sensitive (KG-1 and U-937) or resistant (JOK and NAMALWA) to BS RNase regardless of their origin. The in vivo antitumor effect of BS RNase was tested on human prostate carcinoma transplanted to athymic nude mice. The daily dose of BS RNase (0.25 mg/20 g) was administered for three weeks except weekends (15 doses) by three different ways (intraperitoneally-i.p., subcutaneously-s.c. and intratumorally-i.t.). Whereas i.p. administration was ineffective, s.c. administration significantly reduced size of the tumors and i.t. administration abolished half of the tumors in treated mice. The average weight of treated mice decreased during the experiment by 10-15%.[1]

References

  1. Antitumor action of bovine seminal ribonuclease. Soucek, J., Poucková, P., Matousek, J., Stockbauer, P., Dostál, J., Zadinová, M. Neoplasma (1996) [Pubmed]
 
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