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. 1987 Jun;68(3):677–684.

Direct effect of interleukin 2 on chronic lymphocytic leukaemia B cell functions and morphology.

V Malkovska 1, J Murphy 1, L Hudson 1, D Bevan 1
PMCID: PMC1542751  PMID: 3115651

Abstract

The functional and morphological changes induced by recombinant interleukin 2 (IL-2) were studied in purified B cells from patients with untreated B chronic lymphocytic leukaemia (B-CLL). In eight of nine patients, purified B-CLL cells increased their DNA synthesis in response to IL-2 without preactivation in vitro. This response, studied in detail in three patients, was dose dependent and reached a maximum on day 5 or 6. IL-2 induced or increased IgM secretion in cultures from five of the nine patients studied. Two of this responsive group were particularly interesting as IL-2 not only stimulated IgM secretion but also induced the secretion of IgG. Immunoglobulin production was invariably monoclonal. B CLL cells incubated with IL-2 showed distinct morphological changes including an increase in the size of cytoplasm and enlargement of nuclei together with the appearance of nucleoli. These changes were present in all IL-2 treated cultures but were more pronounced in those containing immunoglobulin secreting cells. None of the IL-2 induced changes appeared to correlate with the clinical stage of the disease or the level of Tac antigen expression on the freshly isolated CLL B cells.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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