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Erschienen in: Cancer Immunology, Immunotherapy 7/2007

01.07.2007 | Original Article

Reduced expression of microenvironmental Th1 cytokines accompanies adenomas–carcinomas sequence of colorectum

verfasst von: Guanglin Cui, Rasmus Goll, Trine Olsen, Sonja Eriksson Steigen, Anne Husebekk, Barthold Vonen, Jon Florholmen

Erschienen in: Cancer Immunology, Immunotherapy | Ausgabe 7/2007

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Abstract

Cytokines have been suggested to be key factors in modulating immune response against tumorigenesis in the microenvironment. Therefore, characterization of cytokine expression along the colorectal adenoma–carcinoma sequence may add important information for understanding the immune-related mechanisms of the development of colorectal carcinoma (CRC). In this study, biopsies from 32 patients with colorectal adenoma (CRA), 20 patients with CRC and 18 healthy controls were examined. Cytokine gene expressions of interleukin-4 (IL-4), IL-10, tumor necrosis factor (TNF)-alpha, interferon (IFN)-gamma and its upstream inducers (IL-12A and IL-18) were measured at messenger RNA (mRNA) level with quantitative real-time PCR (Q-PCR). Cytokine expressing cells were characterized using immunohistochemistry (IHC). A distinct different cytokine profile between adenoma and CRC was observed: the Th1 cytokines (IFN-gamma, TNF-alpha, IL-12A and IL-18) were increased in local tissues of CRA and decreased in CRC. Consistent with the quantitative cytokine data, IHC examinations revealed slightly increased densities of Th1 cytokine-expressing cells in CRA and a remarkably decreased density of the Th1 cells in CRC. In CRA, the cytokine-expressing cells were highly polarized to the subepithelial stroma while the cells were evenly distributed through the stroma in CRC. In conclusion, distinct changes in the Th1 cytokine profile appear along the colorectal adenoma–carcinoma sequence. This may reflect a change in the host immune regulatory function in the adenoma–carcinoma sequence.
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Metadaten
Titel
Reduced expression of microenvironmental Th1 cytokines accompanies adenomas–carcinomas sequence of colorectum
verfasst von
Guanglin Cui
Rasmus Goll
Trine Olsen
Sonja Eriksson Steigen
Anne Husebekk
Barthold Vonen
Jon Florholmen
Publikationsdatum
01.07.2007
Verlag
Springer-Verlag
Erschienen in
Cancer Immunology, Immunotherapy / Ausgabe 7/2007
Print ISSN: 0340-7004
Elektronische ISSN: 1432-0851
DOI
https://doi.org/10.1007/s00262-006-0259-y

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