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Differential expression of S100C in thyroid lesions
Carlos Torres-Cabala1, Angel Panizo-Santos, Henry C Krutzsch
1Surgical Pathology Section, Laboratory of Pathology, National Cancer Institute, NIH, Bethesda, MD, USA.
International Journal of Surgical Pathology
|June 3, 2004
Summary
New research identifies S100C protein as a potential diagnostic marker for thyroid lesions. Immunohistochemical staining of S100C may aid pathologists in distinguishing between benign and malignant thyroid conditions, particularly papillary carcinomas.
Area of Science:
- Endocrinology
- Oncology
- Pathology
Background:
- Accurate diagnosis of thyroid lesions is crucial for effective patient management.
- Novel biomarkers are needed to improve the differential diagnosis of benign and malignant thyroid conditions.
Purpose of the Study:
- To identify and validate new protein markers for the diagnosis of thyroid lesions.
- To investigate the diagnostic utility of S100C protein and Galectin-3 in differentiating thyroid pathologies.
Main Methods:
- Comparative 2-dimensional gel electrophoresis of thyroid tissue.
- Immunohistochemical analysis of S100C and Galectin-3 expression in 94 thyroid specimens.
- Evaluation of normal thyroid tissue (57 specimens) and various benign and malignant lesions.
Main Results:
- S100C protein showed nuclear expression in normal tissue and benign lesions, with strong cytoplasmic staining in papillary carcinomas.
- Galectin-3 was strongly positive in papillary carcinomas and negative in benign lesions, confirming its diagnostic value.
- S100C expression patterns suggest potential utility in differentiating thyroid lesions.
Conclusions:
- Immunohistochemical staining for S100C may assist in the pathological assessment of thyroid lesions.
- S100C is a promising marker, especially for differentiating follicular variants of papillary carcinoma from follicular carcinoma.
- Combined evaluation of S100C and Galectin-3 could enhance diagnostic accuracy in thyroid pathology.