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

Effect of buparvaquone on the expression of interleukin 2 receptors in Theileria annulata-infected cells.

Theileria annulata-infected cells were cultured in the presence or absence of human recombinant interleukin 2 (hrIL-2). This growth factor proved to be capable of enhancing the growth of the infected cells: its effect was marked, particularly when the cells were seeded at low densities, and it varied from cell line to cell line. The infected cells produced a factor that possessed the biological activities of IL-2, since their supernatants could enhance the proliferation of concanvalin A-stimulated (Con A) blasts. The reactivity of the parasitized cells to hrIL-2 was abolished following their treatment with the antitheilerial drug buparvaquone. In addition, the drug inhibited the binding of 125I-IL-2 to T. annulata-infected cells but failed to suppress its binding to Con A blasts. Northern blot analysis revealed that the drug had no effect on the expression of the alpha chain of the IL-2 receptor ( IL-2R). Therefore, it is possible that buparvaquone interferes with the expression of the beta chain of the IL-2R. The role of IL-2 and the IL2R in the permanent proliferation of T. annulata-infected cells is discussed.[1]


  1. Effect of buparvaquone on the expression of interleukin 2 receptors in Theileria annulata-infected cells. Ahmed, J.S., Rintelen, M., Schein, E., Williams, R.O., Dobbelaere, D. Parasitol. Res. (1992) [Pubmed]
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