Immunological microenvironment in prostate cancer: High mast cell densities are associated with favorable tumor characteristics and good prognosis
- 9 March 2009
- journal article
- research article
- Published by Wiley in The Prostate
- Vol. 69 (9), 976-981
- https://doi.org/10.1002/pros.20948
Abstract
BACKGROUND Number of intratumoral mast cells predicts survival in various cancers. The prognostic significance of such mast cells in surgically treated prostate cancer is unknown. METHODS Mast cell densities were determined in prostate cancer samples of more than 2,300 hormone-naïve patients using a tissue microarray format in correlation with clinical follow-up data. Mast cells were visualized immunohistochemically (c-kit). All patients were homogeneously treated by radical prostatectomy at a single institution. RESULTS Mast cells were present in 95.9% of the tumor samples. Median mast cell number on the tissue spot was 9 (range: 0–90; median density: 31 mast cells/mm2). High mast cell densities were significantly associated with more favorable tumors having lower preoperative prostate-specific antigen (P = 0.0021), Gleason score (P < 0.0001) and tumor stage (P < 0.0001) than tumors with low mast cell densities. Prostate-specific antigen recurrence-free survival significantly (P = 0.0001) decreased with decline of mast cell density showing poorest outcome for patients without intratumoral mast cells. In multivariate analysis mast cell density narrowly missed to add independent prognostic information (P = 0.0815) for prostate-specific antigen recurrence. CONCLUSION High intratumoral mast cell density is associated with favorable tumor characteristics and good prognosis in prostate cancer. This finding is consistent with a role of mast cells in the immunological host-defense reaction on prostate cancer. Triggering mast cell activity might expand immunotherapeutic strategies in prostate cancer. Prostate 69: 976–981, 2009.Keywords
This publication has 27 references indexed in Scilit:
- Mast Cells Show Their MightScience, 2007
- Mast cells – key effector cells in immune responsesTrends in Immunology, 2007
- Prostate Cancer Progression and Surrounding MicroenvironmentThe International Journal of Biological Markers, 2006
- Mast cell density, angiogenesis, blood clotting, and prognosis in women with advanced ovarian cancerGynecologic Oncology, 2005
- Tumour angiogenesis and mast cell density in the prognostic assessment of colorectal carcinomasDigestive and Liver Disease, 2005
- The presence of stromal mast cells identifies a subset of invasive breast cancers with a favorable prognosisLaboratory Investigation, 2004
- Mast cells: the JEKYLL and HYDE of tumor growthTrends in Immunology, 2004
- Mast cell density and the context of clinicopathological parameters and expression of p185, estrogen receptor, and proliferating cell nuclear antigen in gastric carcinomaWorld Journal of Gastroenterology, 2002
- The prognostic relevance of angiogenesis and mast cells in squamous cell carcinoma of the oesophagusJournal of Clinical Pathology, 2001
- Independent prognostic value of eosinophil and mast cell infiltration in colorectal cancer tissueThe Journal of Pathology, 1999