Objective To study the role of cell adhesion molecule P-selectin monoclonal antibody (MAb) in tumor metastasis of an orthotopic metasta tic model. Methods SUD mice were implanted orthotopically SGC-7901 human gastric ...Objective To study the role of cell adhesion molecule P-selectin monoclonal antibody (MAb) in tumor metastasis of an orthotopic metasta tic model. Methods SUD mice were implanted orthotopically SGC-7901 human gastric cancer tissue. 3d later, animals received i. v. injections of PBS or P-selectin MAb (100μg/injection) twice weekly for 3 weeks. 42d after operation, all animals were sacrificed. Tissues from all organs were obtained for histopathological evaluation. Results 10 of the animals ( n = 11) treat-ed with PBS were found to develop metastatic tumors in the regional lymph nodes, liver, and lung. In contrast, 2 of the animals ( n = 9) treated with P-selectin MAb developed metastatic tumors in the organs examined. The expression of P-selectin mRNA in gastric cancer tissue of SCID mice with tumor metastasis was higher than that without such metastasis. Conclusion P-selectin expression is associated with tumor metastasis, and the metastasis may be inhibited by the MAb.展开更多
基金the Youth Science Foundation of Shanghai Public Ad-ministration (131984Y15)
文摘Objective To study the role of cell adhesion molecule P-selectin monoclonal antibody (MAb) in tumor metastasis of an orthotopic metasta tic model. Methods SUD mice were implanted orthotopically SGC-7901 human gastric cancer tissue. 3d later, animals received i. v. injections of PBS or P-selectin MAb (100μg/injection) twice weekly for 3 weeks. 42d after operation, all animals were sacrificed. Tissues from all organs were obtained for histopathological evaluation. Results 10 of the animals ( n = 11) treat-ed with PBS were found to develop metastatic tumors in the regional lymph nodes, liver, and lung. In contrast, 2 of the animals ( n = 9) treated with P-selectin MAb developed metastatic tumors in the organs examined. The expression of P-selectin mRNA in gastric cancer tissue of SCID mice with tumor metastasis was higher than that without such metastasis. Conclusion P-selectin expression is associated with tumor metastasis, and the metastasis may be inhibited by the MAb.
