SUDHL-4细胞体外培养和小鼠肿瘤模型的建立

本研究探讨人弥漫性大B细胞淋巴瘤(DLBCL)细胞株SUDHL-4的体外培养和小鼠成瘤条件。在不同条件下培养SUDHL-4细胞,对细胞生长形态及生物学特性进行观察分析;对肿瘤相关抗原表达进行免疫学分析;采用SCID小鼠皮下接种,对肿瘤生长情况和组织学形态进行研究。结果显示:培养液中加入10%胎牛血清,SUDHL-4细胞在体外生长良好,并表达多数重要的B细胞和肿瘤相关标记。采用SCID小鼠皮下接种107细胞可成功地建立人DLBCL移植瘤模型,成瘤率70%,肿瘤的组织学表现类似于人DLBCL。结论:适当条件下培养的SUDHL-4细胞的生物学和免疫学特性符合人DLBCL的特征,并具有良好的致瘤性,可为人DLBCL的相关研究提供良好的模型。

SUDHL-4 cell culture in vitro and establishment of mouse tumor model

This study was designed to investigate the biological and immunological characteristics of a human diffuse large B-cell lymphoma (DLBCL) cell line SUDHL-4, and to establish a mouse model for human DLBCL. SUDHL-4 cells were cultured under different conditions. The morphology and in vitro expression of B-cell and tumor-related markers were detected by microscopy and flow cytometry respectively. To establish the transplanted tumor, the cells were injected subcutaneously into SCID mice. Tumor formation and its histomorphology were analyzed. The results showed that the expression of B cell/tumor-related markers was found on cultured SUDHL-4 cells. A stable mouse model of human DLBCL was successfully established in SCID mice by subcutaneous injection of 10(7) SUDHL-4 cells. Tumor tissue from mice exhibited similar histologic manifestation to those of human DLBCL. It is concluded that the SUDHL-4 cells represent a high consistency in immunological characteristics with human DLBCL. Transplantation of SUDHL-4 cells provides a syngeneic mouse model for the study of human DLBCL.