Sokol, Lena; Kölzer, Viktor; Rau, Tilman; Karamitopoulou, Evanthia; Zlobec, Inti; Lugli, Alessandro (2015). Loss of tapasin correlates with diminished CD8(+) T-cell immunity and prognosis in colorectal cancer. Journal of translational medicine, 13(279), p. 279. BioMed Central 10.1186/s12967-015-0647-1
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BACKGROUND
Tapasin is a crucial component of the major histocompatibility (MHC) class I antigen presentation pathway. Defects in this pathway can lead to tumor immune evasion. The aim of this study was to test whether tapasin expression correlates with CD8(+) cytotoxic T lymphocyte (CTL) infiltration of colorectal cancer (CRC) and overall survival.
METHODS
A next-generation tissue microarray (ngTMA) of 198 CRC patients with full clinicopathological information was included in this study. TMA slides were immunostained for tapasin, MHC I and CD8. Marker expression was analyzed with immune-cell infiltration, patient survival and TNM-staging.
RESULTS
A reduction of tapasin expression strongly correlated with venous invasion (AUC 0.682, OR 2.7, p = 0.002; 95% CI 1.7-5.0), lymphatic invasion (AUC 0.620, OR 2.0, p = 0.005; 95 % CI 1.3-3.3), distant metastasis (AUC 0.727, OR 2.9, p = 0.004; 95% CI 1.4-5.9) and an infiltrative tumor border configuration (AUC 0.621, OR 2.2, p = 0.017; 95% CI 1.2-4.4). Further, tapasin expression was associated with CD8(+) CTL infiltration (AUC 0.729, OR 5.4, p < 0.001; 95% CI 2.6-11), and favorable overall survival (p = 0.004, HR 0.6, 95% CI 0.42-0.85).
CONCLUSIONS
Consistent with published functional data showing that tapasin promotes antigen presentation, as well as tumor immune recognition and destruction by CD8(+) CTLs, a reduction in tapasin expression is associated with tumor progression in CRC.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Service Sector > Institute of Pathology > Clinical Pathology 04 Faculty of Medicine > Service Sector > Institute of Pathology |
UniBE Contributor: |
Sokol, Lena, Kölzer, Viktor, Rau, Tilman, Karamitopoulou Diamantis, Evanthia, Zlobec, Inti, Lugli, Alessandro |
Subjects: |
500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health |
ISSN: |
1479-5876 |
Publisher: |
BioMed Central |
Language: |
English |
Submitter: |
Doris Haefelin |
Date Deposited: |
30 Oct 2015 14:28 |
Last Modified: |
02 Mar 2023 23:26 |
Publisher DOI: |
10.1186/s12967-015-0647-1 |
PubMed ID: |
26310568 |
BORIS DOI: |
10.7892/boris.72361 |
URI: |
https://boris.unibe.ch/id/eprint/72361 |
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