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Eur. J. Cancer 45, 1664-1672 (2009)
The immune response against prostate cancer seems to be inefficient although tumour cells show an over-expression of tumour-associated antigens suggesting that regulatory networks inhibit immune cell function locally. To address this proposition, lymphocytes within prostate cancer-inflicted tissue were analysed for the expression of markers associated with negative regulatory function and exhaustion. Prostate cancer, benign prostatic hyperplasia and healthy prostate tissues were investigated by immunohistology for CD25, FOXP3, PD-1 and B7-H1. We had previously documented that prostate cancer islets are surrounded by clustered accumulations of CD3(+) lymphocytes, which lack perforin and interferon-gamma (IFN gamma) expression, thus are apparently quiescent. Here, we report that these clusters contain numerous CD25(+) and FOXP3(+) cells. These markers are associated with regulatory T cells, and their presence in lymphocyte clusters near prostate cancer regions indicates an environment with negative impact on immune response against cancer cells. Consistent with this hypothesis, cells expressing PD-1 and its ligand B7-H1, which are markers associated with exhaustion of lymphocyte function, were also detected in the lymphocyte clusters. Expression of molecules associated with inhibition and exhaustion of lymphocytes may reflect events contributing to ineffective immune responses against cancer cells.
Impact Factor
Scopus SNIP
Web of Science
Times Cited
Times Cited
Scopus
Cited By
Cited By
Altmetric
4.475
1.620
53
101
Anmerkungen
Besondere Publikation
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Schlagwörter
Tumour-infiltrating lymphocytes; FOXP3; Tregs; PD-1; B7-H1; Exhausted lymphocytes; regulatory t-cells; infiltrating lymphocytes; carcinoma patients; expression; immunology; prognosis; diseases; target
Sprache
englisch
Veröffentlichungsjahr
2009
HGF-Berichtsjahr
2009
ISSN (print) / ISBN
0959-8049
e-ISSN
1879-0852
Zeitschrift
European Journal of Cancer
Quellenangaben
Band: 45,
Heft: 9,
Seiten: 1664-1672
Verlag
Elsevier
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30504 - Mechanisms of Genetic and Environmental Influences on Health and Disease
Forschungsfeld(er)
Immune Response and Infection
PSP-Element(e)
G-501700-001
G-520400-001
G-501700-005
G-520400-001
G-501700-005
Scopus ID
65849449107
PubMed ID
19318244
Erfassungsdatum
2009-12-31