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HOME > J Pathol Transl Med > Volume 40(1); 2006 > Article
Original Article Expression of Anaphase Promoting Complex in Surgically Resected Squamous Cell Carcinoma and Adenocarcinoma of the Lung.
Ji Sun Song, Soon Hee Jung, Minseob Eom, Sang Yeop Yi, Kwang Hwa Park, Yup Kang, Ho Young Kim
Journal of Pathology and Translational Medicine 2006;40(1):52-59
DOI: https://doi.org/
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1Department of Pathology, Kwandong University College of Medicine, Goyang, Korea.
2Department of Pathology, Wonju College of Medicine, Yonsei University, Wonju 220-701, Korea. soonheej@yonsei.ac.kr
3Department of Internal Medicine, Wonju College of Medicine, Yonsei University, Wonju 220-701, Korea.
4Institute for Medical Science, School of Medicine, Ajou University, Suwon, Korea.

BACKGROUND
The anaphase promoting complex (APC) promotes the degradation of mitotic cyclins as well as other substrates involved in sister chromatid adhesion. This study was carried out to examine the relationship between the APC expression and the clinicopathological variables, in an attempt to determine the role of the APC in the proliferation of lung cancer and to evaluate the possibility of an aberrant APC function in surgically resected squamous cell carcinomas and adenocarcinomas of the lung.
METHODS
Immunohistochemical staining was performed for APC, Ki-67, cyclin B1, Cdc2, MMP-2 and VEGF in 55 cases of squamous cell carcinoma and 34 cases of adenocarcinoma of the lung, using the avidin-biotin-peroxidase method.
RESULTS
The immunohistochemical stains for APC revealed a positive reaction in 49 cases (55.1%). The APC expression level was higher in the cyclin B1-positive group (p= 0.01), the Cdc2-positive group (p=0.001), the MMP-2-positive group (p=0.03), the group with lymph node metastasis (61.4% vs 48.9%), and the group with stage II/III cancer (60.7%) compared with those with stage I (42.9%).
CONCLUSIONS
The APC may have an aberrant function, such as a change in its role in controlling the cell cycle, and might be associated with the invasiveness and proliferation of tumor cells.

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