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@ARTICLE{Rughetti:49054,
author = {Rughetti, A. and Pellicciotta, I. and Biffoni, M. and
Bäckström, M. and Link, T. and Noll, T. and Hansson, G. C.
and Clausen, H. and Burchell, J. M. and
Taylor-Papadimitriou, J. and Nuti, M.},
title = {{R}ecombinant tumor associated {MUC}1 impairs
differentiation and function of {D}endritic {C}ells},
journal = {The journal of immunology},
volume = {174},
issn = {0022-1767},
address = {Bethesda, Md.},
publisher = {Soc.},
reportid = {PreJuSER-49054},
pages = {7764 - 7772},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {Tumors exploit several strategies to evade immune
recognition, including the production of a large number of
immunosuppressive factors, which leads to reduced numbers
and impaired functions of dendritic cells (DCs) in the
vicinity of tumors. We have investigated whether a mucin
released by tumor cells could be involved in causing these
immunomodulating effects on DCs. We used a recombinant
purified form of the MUC1 glycoprotein, an epithelial
associated mucin that is overexpressed, aberrantly
glycosylated, and shed during cancer transformation. The
O-glycosylation profile of the recombinant MUC1 glycoprotein
(ST-MUC1) resembled that expressed by epithelial tumors in
vivo, consisting of large numbers of sialylated core 1
(sialyl-T, ST) oligosaccharides. When cultured in the
presence of ST-MUC1, human monocyte-derived DCs displayed a
modified phenotype with decreased expression of
costimulatory molecules (CD86, CD40), Ag-presenting
molecules (DR and CD1d), and differentiation markers (CD83).
In contrast, markers associated with an immature phenotype,
CD1a and CD206 (mannose receptor), were increased. This
effect was already evident at day 4 of DC culture and was
dose dependent. The modified phenotype of DCs corresponded
to an altered balance in IL-12/IL-10 cytokine production,
with DC expressing an IL-10(high)IL-12(low) phenotype after
exposure to ST-MUC1 These DCs were defective in their
ability to induce immune responses in both allogeneic and
autologous settings, as detected in proliferation and
ELISPOT assays. The altered DC differentiation and Ag
presentation function induced by the soluble sialylated
tumor-associated mucin may represent a mechanism by which
epithelial tumors can escape immunosurveillance.},
keywords = {J (WoSType)},
cin = {IBT-2},
ddc = {610},
cid = {I:(DE-Juel1)VDB56},
pnm = {Biotechnologie},
pid = {G:(DE-Juel1)FUEK256},
shelfmark = {Immunology},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000229791400037},
url = {https://juser.fz-juelich.de/record/49054},
}