摘要AIM: To explore the molecular events taking place during human colon cancer development and progression through high-throughput tissue microarray analysis.METHODS: We constructed two separate tissue microarrays containing 1.0 mm or 1.5 mm cylindrical samples acquired from 112 formalin-fixed and paraffinembedded blocks, including carcinomas (n = 85),adenomatous polyps (n = 18), as well as normal para-cancerous colon tissues (n = 9). Immunohistochemical staining was applied to the analysis of the consecutive tissue microarray sections with antibodies for 11 different proteins, including p53, p21, bcl-2, bax, cyclin D1, PTEN,p-Akt1, β-catenin, c-myc, nm23-h1 and Cox-2.RESULTS: The protein expressions of p53, bcl-2, bax,cyclin D1, β-catenin, c-myc, Cox-2 and nm23-h1 varied significantly among tissues from cancer, adenomatous polyps and normal colon mucosa (P = 0.003, P = 0.001,P = 0.000, P = 0.000, P = 0.034, P = 0.003, P = 0.002,and P = 0.007, respectively). Chi-square analysis showed that the statistically significant variables were p53,p21, bax, β-catenin, c-myc, PTEN, p-Akt1, Cox-2 and nm23-h1 for histological grade (P = 0.005, P = 0.013, P= 0.044, P = 0.000, P = 0.000, P = 0.029, P = 0.000, P= 0.008, and P = 0.000, respectively), β-catenin, c-mycand p-Akt1 for lymph node metastasis (P = 0.011, P =0.005, and P = 0.032, respectively), β-catenin, c-myc,Cox-2 and nm23-h1 for distance metastasis (P = 0.020,P = 0.000, P = 0.026, and P = 0.008, respectively),and cyclin D1, β-catenin, c-myc, Cox-2 and nm23h1 for clinical stages (P = 0.038, P = 0.008, P = 0.000, P =0.016, and P = 0.014, respectively).CONCLUSION: Tissue microarray immunohistochemical staining enables high-throughput analysis of genetic alterations contributing to human colon cancer development and progression. Our results implicate the potential roles of p53, cyclin D1, bcl-2, bax, Cox-2,β-catenin and c-myc in development of human colon cancer and that of bcl-2, nm23-h1, PTEN and p-Akt1 in progression of human colon cancer.