%A CHEN Wen-Jun, DONG Chong-Hai, TIAN Zi-Bin %T Expression and significance of c-myc and CD24 in colorectal cancer %0 Journal Article %D 2015 %J Journal of International Oncology %R 10.3760/cma.j.issn.1673-422X.2015.04.005 %P 255-258 %V 42 %N 4 %U {https://gjzlx.sdfmu.edu.cn/CN/abstract/article_9639.shtml} %8 2015-04-08 %X 【Abstract】ObjectiveTo determine the expression of cmyc and CD24 in colorectal carcinoma, colorectal polyp and normal mucosa, and to explore the role and correlation of them in the carcinogenesis of colorectal carcinoma. MethodsThe expression of cmyc and CD24 in colorectal carcinoma (n=60), colorectal adenomatous polyp (n=45), colorectal hyperplastic polyp (n=15) and the adjacent noncancerous tissue (n=30) was observed by immunohistochemical assay. ResultsThe positive rate of cmyc in colorectal carcinoma were 73.3%, significantly higher than that in colorectal adenomatous polyp 44.4% (χ2=9.016 8, P＜0.01), colorectal hyperplastic polyp 13.3% (χ2=18.215 9, P＜0.01) and adjacent noncancerous tissue 6.7% (χ2=25.133 0, P＜0.01); the positive rate of CD24 in colorectal carcinoma was 76.7%, significantly higher than that in colorectal hyperplastic polyp 6.7% (χ2=25.133 0, P＜0.01) and adjacent noncancerous tissue 3.3% (χ2=43.107 4, P＜0.01). cmyc expression in colon cancer was significantly correlated with cancer site (χ2=8.352 3, P＜0.01), lymph node metastasis (χ2=4.275 1, P＜0.05), differentiation (χ2=4.115 3, P＜0.05) and TNM stage (χ2=5.739 9, P＜0.05). CD24 expression in colon cancer was significantly correlated with cancer size (χ2=9.333 6, P＜0.01), lymph node metastasis (χ2=7.693 0, P＜0.01), differentiation (χ2=5.870 0, P＜0.05) and TNM stage (χ2=4.498 7, P＜0.05). There was a positive correlation relationship between CD24 and cmyc in colorectal carcinoma tissue (χ2=10.824 9, r=0.39, P＜0.05).ConclusionThe expression of cmyc and CD24 are high in colorectal cancer, having a significant correlation with some of the clinicaopathological features. cmyc is likely to act as a downstream target gene of CD24 signaling pathway, whose expression is probably regulated by CD24 in colorectal carcinoma tissue.