MAD2 Expression in Ovarian Carcinoma: Different Expression Patterns and Levels among Various Types of Ovarian Carcinoma and Its Prognostic Significance in High-Grade Serous Carcinoma
박보은, 정지윤, 김선주, 박지영,
소속 상세정보
박보은 ( Park Po-Eun )
Kyungpook National University School of Medicine Department of Pathology
정지윤 ( Jeong Ji-Yun )
Kyungpook National University School of Medicine Department of Pathology
김선주 ( Kim Sun-Zoo )
Kyungpook National University School of Medicine Department of Pathology
박지영 ( Park Ji-Young )
Kyungpook National University School of Medicine Department of Pathology
KMID : 0357920130470050418
Abstract
Background: Mitotic arrest deficiency protein 2 (MAD2) is a key component of spindle assembly checkpoint function, which mediates cell apoptosis through microtubule kinetics. Aberrant expression of MAD2 is believed to be associated with the development of chromosome instability. MAD2 also has a signihicant role in cellular drug resistance to taxane chemotherapeutic agents. Methods: Expression of MAD2 and p53 was investigated using immunohistochemistry in 85 cases of ovarian carcinomas. Clinicopathological data including progression-free survival were analyzed. Results: A significant (p=.035) association was observed between the grade of serous carcinoma and the expression level of MAD2. While low-grade serous carcinoma showed a lowlevel expression of MAD2, high-grade serous carcinoma showed a high-level expression of MAD2. We also determined that low-level expression of MAD2 was associated with reduced progression- free survival (PFS) (p=.016) in high-grade serous carcinoma. Conclusions: MAD2 expression in ovarian carcinoma is related to the grade of serous carcinoma and PFS of high-grade serous carcinoma. Expression level of MAD2 detected by immunohistochemistry may serve as an indicator in predicting the response of microtubule-interfering chemotherapeutic agents.
키워드
MAD2L1 protein; human; Ovarian neoplasms; Cell cycle checkpoints; Taxane
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