Abstract
Earlier, we reported an association between lowin vitro andin vivo IL-1 and IL-6 production, decreased IL-1β and IL-10 mRNA expression and B cell chronic lymphocytic leukemia (B-CLL) disease progression. We have now further investigated cytokine mRNA transcription in B-CLL cells and cytokine serum levels in B-CLL patients. Reverse transcriptase polymerase chain reaction (RT-PCR) amplification of tumor necrosis factor (TNFα), IFNγ, IL-6 and BCGF was equally often seen in non-progressive and progressive patients. However, 4 out of 23 non-progressive cases expressed mRNA for IL-12 while no IL-12 expression was seen in 15 progressive patients. No IL-12 was found in sera or supernatants fromin vitro stimulated B-CLL cells, whereas TNFα and IL-10 were detected in sera from 51 and 31 of 65 B-CLL patients, respectively. TNFα values were significantly high in sera from patients in stages III and IV with disease progression. TNFα and IL-10 were also detected in culture supernatants fromin vitro stimulated B-CLL cells, whereas IFNγ was undetectable in these cultures and rarely positive in serum. Although further investigations are required, our data and that from previous reports indicate that B-CLL-derived cytokines are involved in B-CLL disease progression.
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Aguilar-Santelises, M., Gigliotti, D., Osorio, L. et al. Cytokine expression in B-CLL in relation to disease progression andin vitro activation. Med Oncol 16, 289–295 (1999). https://doi.org/10.1007/BF02785875
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DOI: https://doi.org/10.1007/BF02785875