Ann Coloproctol.
2013 Jun;29(3):93-99. 10.3393/ac.2013.29.3.93.
Expression of Secreted Protein Acidic and Rich in Cysteine in the Stroma of a Colorectal Carcinoma is Associated With Patient Prognosis
- Affiliations
-
- 1Department of Pathology, Soonchunhyang University College of Medicine, Cheonan, Korea.
- 2Department of Surgery, Soonchunhyang University College of Medicine, Cheonan, Korea. ssurge@sch.ac.kr
- 3Department of Internal Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea.
- 4Department of Preventive Medicine, Soonchunhyang University College of Medicine, Cheonan, Korea.
- KMID: 1971119
- DOI: http://doi.org/10.3393/ac.2013.29.3.93
Abstract
- PURPOSE
Secreted protein acidic and rich in cysteine (SPARC), also known as osteonectin or basement-membrane-40 (BM-40), is a member of a family of matricellular proteins, whose functions are to modulate cell-matrix interactions, growth and angiogenesis in colorectal cancer. In this study, the expression of SPARC was evaluated and its correlations with clinicopathological parameters were investigated.
METHODS
The researchers analyzed the expression patterns of SPARC by using immunohistochemistry in 332 cases of colorectal cancer of tissue microarray. The clinicopathological characteristics were defined by using the TNM criteria of the Union for International Cancer Control. Clinicopathological factors such as age, sex, histologic type of the tumor, pathologic tumor stage, TNM stage, and lymphovascular invasion were evaluated according to the SPARC expression.
RESULTS
The hazard ratios expressing SPARC in tumor cells, in the stroma, and in both tumor cells and the stroma were 2.10 (P = 0.036), 3.27 (P = 0.003) and 2.12 (P = 0.038), respectively. Patient survival was decreased in patient expressing SPARC in the stroma, and this result showed statistical significance (P = 0.016).
CONCLUSION
These findings suggest that SPARC expression in a tumor and in the stroma correlates with disease progression and may be used as a prognostic marker for colorectal cancer.
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