S-Space College of Medicine/School of Medicine (의과대학/대학원) Pathology (병리학전공) Journal Papers (저널논문_병리학전공)
Distinct expression patterns of E-cadherin and beta-catenin in signet ring cell carcinoma components of primary pulmonary adenocarcinoma
- Moon, Kyung Chul; Cho, Soo Youn; Lee, Hye Seung; Jeon, Yoon Kyung; Chung, Jin-Haeng; Jung, Kyeong Cheon; Chung, Doo Hyun
- Issue Date
- College of American Pathologists
- Arch Pathol Lab Med. 2006;130:1320-1325
- CONTEXT: E-Cadherin and beta-catenin complexes have been suggested to have critical roles in cancer development and progression. Primary signet ring cell carcinoma (SRCC) of the lung is a rare variant of pulmonary adenocarcinoma, and E-cadherin and beta-catenin expressions of this tumor have not been documented, to our knowledge. OBJECTIVE: To characterize the E-cadherin and beta-catenin expressions in SRCC of the lung. DESIGN: An immunohistochemical evaluation of E-cadherin and beta-catenin expressions in 10 cases of SRCC of the lung, 10 cases of conventional pulmonary adenocarcinoma, 10 cases of gastric SRCC, and 10 cases of colorectal SRCC was performed. RESULTS: Membranous E-cadherin and beta-catenin expressions were frequently reduced or absent in all types of tumors tested. Aberrant E-cadherin localization and nuclear beta-catenin accumulation were frequently found in gastric (6/10 and 5/10, respectively) and colorectal (7/10 and 9/ 10, respectively) SRCCs, whereas SRCC of the lung rarely showed aberrant E-cadherin localization (1/10) or nuclear beta-catenin accumulation (0/10). CONCLUSIONS: Signet ring cell carcinoma of the lung rarely showed aberrant E-cadherin localization or beta-catenin nuclear accumulation, which are frequent events in gastric and colorectal SRCCs. These results suggest that the biologic roles of E-cadherin and beta-catenin complexes in SRCC of the lung differ from their roles in gastric or colorectal SRCCs.
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