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Subklewe, M.* ; Sebelin-Wulf, K.* ; Beier, C.* ; Lietz, A.* ; Mathas, S.* ; Dörken, B.* ; Pezzutto, A.*

Dendritic cell maturation stage determines susceptibility to the proteasome inhibitor bortezomib.

Hum. Immunol. 68, 147-155 (2007)
PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The proteasome inhibitor bortezomib has been used successfully in the treatment of non-Hodgkin lymphomas in humans, and in the treatment of graft versus host disease (GVHD) and autoimmune diseases in animal models. The mechanism of growth inhibition and immunosuppression is only partly understood. Here, we have evaluated the differential effect of bortezomib on human monocyte derived immature and mature dendritic cells (DCs) as the maturation stage of DCs determines their function. We found bortezomib to induce apoptotic cell death in immature DCs and to a much lesser extent, in mature DCs. Furthermore, cytokine-induced maturation of immature DCs was inhibited by bortezomib, whereas already matured DCs remained unaffected as seen by phenotype and allo-stimulatory capacity. This corresponded to a decreased NF-kappaB activity in immature DCs, whereas NF-kappaB activity of mature DCs was not affected. In conclusion, our data expand on previous reports on the effects of proteasome inhibitors on human monocyte-derived DCs by demonstrating a differential effect of bortezomib on immature versus mature DCs. Our findings suggest a potential role of bortezomib in modulating immune responses in humans through inhibition of DC maturation.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
ISSN (print) / ISBN 0198-8859
e-ISSN 0198-8859
Zeitschrift Human Immunology
Quellenangaben Band: 68, Heft: 3, Seiten: 147-155 Artikelnummer: , Supplement: ,
Verlag Elsevier
Begutachtungsstatus Peer reviewed