TY - JOUR ID - 21396 TI - Preparation and application of patient-derived xenograft mice model of colorectal cancer JO - Iranian Journal of Basic Medical Sciences JA - IJBMS LA - en SN - 2008-3866 AU - Zhang, Yutao AU - Yang, Yongming AU - Zan, Likun AU - Wang, Jing AU - Yan, Lei AU - Zhao, Lili AU - Chen, Lixia AU - Xi, Yanfeng AU - Bai, Wenqi AU - Yang, Xihua AD - Department of Colorectal and Anal Surgery, Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, 030013, Taiyuan, Shanxi, China AD - Laboratory Animal Center, Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, 030013, Taiyuan, Shanxi, China AD - Department of Pathology, Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, 030013, Taiyuan, Shanxi, China AD - Laboratory Animal Center, Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer Hospital, Chinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical University, 030013, Taiyuan, Shanxi, China Y1 - 2023 PY - 2023 VL - 26 IS - 2 SP - 248 EP - 254 KW - alpha-Fetoproteins KW - Cadherins KW - Capecitabine KW - Carcinoembryonic antigen KW - Colorectal Neoplasms KW - Heterografts DO - 10.22038/ijbms.2022.67445.14780 N2 - Objective(s): Patient-derived xenograft (PDX) model becomes a more and more important tool for tumor research. This study aimed to establish a colorectal cancer PDX model and verify its applicability.Materials and Methods: Fresh human colorectal cancer tissue was surgically removed and subcutaneously inoculated into immunodeficient mice to establish the PDX model. Hematoxylin and eosin (HE) staining and immunohistochemical staining were used to evaluate the model. The successful PDX model was selected to study the efficacy of capecitabine in treating colorectal cancer. Results: HE staining showed that the PDX mice model of colorectal cancer could preserve the histological characteristics of the primary tumor. Immunohistochemistry staining showed α-fetoprotein (AFP), carcinoembryonic antigen (CEA), and E-cadherin were strongly positively expressed in primary human and PDX tumor tissues, with a high degree of similarity. Capecitabine significantly inhibited PDX tumor growth and reduced the expression of AFP and CEA proteins in the tumor tissues (all Ps<0.05). Conclusion: We successfully established a colorectal cancer PDX model, and the PDX model could retain the histological and biological characteristics of the primary tumor. Using this PDX model, we revealed that capecitabine at a dose of 300–400 mg/kg can effectively treat colorectal cancer, and no significant difference in toxicity was found among different dose groups. The current work provides a feasible framework for establishing and validating the PDX tumor model to better facilitate the evaluation of drug efficacy and safety. UR - https://ijbms.mums.ac.ir/article_21396.html L1 - https://ijbms.mums.ac.ir/article_21396_a8b1d9486db346bb1ce31591b0252de2.pdf ER -