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J Korean Cancer Assoc > Volume 27(2); 1995 > Article
Journal of the Korean Cancer Association 1995;27(2): 223-230.
원발성 및 재발성 대장암에서 세포증식능의 평가 - Transforming growth factor - α 와 Proliferating cell nuclear antigen 의 표현양상과 DNA 유세포 분석 -
성진실, 성순희, 이정운, 신현수, 박찬일, 권오헌
Assessment of Cell Proliferation in Primary and Recurrent Colorectal Cancers - Expression of Transforming Growth Factor - α and Prolifer
Jin Sil Seong, Sun Hee Sung, Jung Woon Lee, Hyun Soo Shin, Charn Il Park, Oh Hun Kwon
Cell proliferation potential has been found to be a significant biological parameter correlated with the clinical outcome. This study was ta investigate the cell proliferation potential in primary and recurrent colorectal tumor tissues. Using paraffin-embedded tissues from the paired primary and recurrent tumors of l0 patients, a simple hematoxylineosin stain was done and immunohistochemical stains for trans- forming growth factor-a(TGF-a) and proliferating cell nuclear antigen(PCNA) were performed through a labeled streptavidine biotin method. DNA contents and S-phase fraction(SPF) of the cells were assessed by flowcytometric DNA analysis. The degree of differentiation was poorer in the recurrent tumors than in primary tumors. In 4 primary tumors with mixed adenocacinoma and mucinous adenocarcinoma, only the mucinous adenocarcinoma companent was shown in the recurrent tumors. There was no difference in TGF-a expression between the primary and the recurrent tumors however, PCNA was overexpressed in the recurrent tumors comparing to the primary tumors. Flow cytometric DNA analysis was successful in 7 paired cases. There was change of the ploidy from the diploidy to the aneuploidy in 4 cases. SPF showed remarkable increase in the recurrent tumors comparing to the primary tumors. These results show high proliferative potential of the recurrent colorectal tumors, which can be measured using PCNA expression and SPF as biomarkers. Based on the results of this study, an effort to establish more refined method to predict recurrence should be pursued.
Key words: Proliferative potential, Colorectal cancer, TGF-a, PCNA, Flow cytometry
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