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Published in: BMC Cancer 1/2009

Open Access 01-12-2009 | Research article

Expression of the costimulatory molecule B7-H3 is associated with prolonged survival in human pancreatic cancer

Authors: Martin Loos, Dennis M Hedderich, Malte Ottenhausen, Nathalia A Giese, Melanie Laschinger, Irene Esposito, Jörg Kleeff, Helmut Friess

Published in: BMC Cancer | Issue 1/2009

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Abstract

Background

Costimulatory signaling has been implicated as a potential regulator of antitumor immunity in various human cancers. In contrast to the negative prognostic value of aberrant B7-H1 expression by pancreatic cancer cells, the role of B7-H3 is still unknown. Therefore, we investigated the expression pattern and clinical significance of B7-H3 expression in human pancreatic cancer.

Methods

B7-H3 expression was evaluated by immunohistochemistry in 68 patients with pancreatic cancer who underwent surgical tumor resection. Expression data was correlated with clinicopathologic features and with the number of tumor-infiltrating T cells.

Results

B7-H3 expression was significantly upregulated in pancreatic cancer compared to normal pancreas (p < 0.05). In 60 of 68 examined tumors B7-H3 protein was detectable in pancreatic cancer cells. Patients with high tumor B7-H3 levels had a significantly better postoperative prognosis than patients with low tumor B7-H3 levels (p = 0.0067). Furthermore, tumor B7-H3 expression significantly correlated with the number of tumor-infiltrating CD8+ T cells (p = 0.018).

Conclusion

We demonstrate for the first time that B7-H3 is abundantly expressed in pancreatic cancer and that tumor-associated B7-H3 expression significantly correlates with prolonged postoperative survival. Our findings suggest that B7-H3 might play an important role as a potential stimulator of antitumor immune response in pancreatic cancer.
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Metadata
Title
Expression of the costimulatory molecule B7-H3 is associated with prolonged survival in human pancreatic cancer
Authors
Martin Loos
Dennis M Hedderich
Malte Ottenhausen
Nathalia A Giese
Melanie Laschinger
Irene Esposito
Jörg Kleeff
Helmut Friess
Publication date
01-12-2009
Publisher
BioMed Central
Published in
BMC Cancer / Issue 1/2009
Electronic ISSN: 1471-2407
DOI
https://doi.org/10.1186/1471-2407-9-463

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