Essential Role for Survivin in the Proliferative Expansion of Progenitor and Mature B Cells
In: Journal of immunology (Baltimore, Md. : 1950), Jg. 196 (2015-07-30), Heft 5
Online
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Zugriff:
Survivin is a member of the inhibitor of apoptosis family of proteins and a biomarker of poor prognosis in aggressive B cell non-Hodgkin’s lymphoma. In addition to its role in inhibition of apoptosis, survivin also regulates mitosis. In this article, we show that deletion of survivin during early B cell development results in a complete block at the cycling pre-B stage. In the periphery, B cell homeostasis is not affected, but survivin-deficient B cells are unable to mount humoral responses. Correspondingly, we show that survivin is required for cell division in response to mitogenic stimulation. Thus, survivin is essential for proliferation of B cell progenitors and activated mature B cells, but is dispensable for B cell survival. Moreover, a small-molecule inhibitor of survivin strongly impaired the growth of representative B lymphoma lines in vitro, supporting the validity of survivin as an attractive therapeutic target for high-grade B cell non-Hodgkin’s lymphoma.
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Essential Role for Survivin in the Proliferative Expansion of Progenitor and Mature B Cells
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Autor/in / Beteiligte Person: | Jellusova, Julia ; Conway, Edward M. ; Miletic, Ana V. ; Baracho, G. V. ; Lee, Charlotte R. ; Rickert, Robert C. ; Cato, Matthew H. |
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Zeitschrift: | Journal of immunology (Baltimore, Md. : 1950), Jg. 196 (2015-07-30), Heft 5 |
Veröffentlichung: | 2015 |
Medientyp: | unknown |
ISSN: | 1550-6606 (print) |
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