Rifkin D B, Pollack R
J Cell Biol. 1977 Apr;73(1):47-55. doi: 10.1083/jcb.73.1.47.
The correlation between malignant transformation and increased plasminogen activator synthesis has been studied in a variety of established cell lines. In contrast to the behavior of secondary mouse embryo cultures, which always show increased fibrinolytic activity when transformed, no such correlation was found within the BALB/c 3T3 line and its transformed derivatives. Cell lines were established from tumors initiated in BALB/c mice by several transformed cell lines. These lines were generally found to contain no more plasminogen activator than the cells used for inoculation. A correlation was found between transformation and plasminogen activator synthesis within Swiss 3T3 cell lines. However, the correlation was not maintained by serum revertants of transformed Swiss 3T3 cells.
在多种已建立的细胞系中,对恶性转化与纤溶酶原激活物合成增加之间的相关性进行了研究。与二次小鼠胚胎培养物的行为相反,二次小鼠胚胎培养物在转化时总是显示出纤溶酶活性增加,但在BALB/c 3T3细胞系及其转化衍生物中未发现这种相关性。从几种转化细胞系在BALB/c小鼠中引发的肿瘤建立了细胞系。这些细胞系通常被发现所含的纤溶酶原激活物并不比用于接种的细胞更多。在瑞士3T3细胞系中发现了转化与纤溶酶原激活物合成之间的相关性。然而,转化的瑞士3T3细胞的血清回复突变体并未保持这种相关性。