Abstract
The aim of this study was to establish a reproducible and quantitative liver metastasis model in mice. The in vitro colon 26 (C-26) cultured cell line was initially taken from an in vivo transplantable C-26 adenocarcinoma tumor mass using the standard enzymatic treatments, collagenase and DNAse. In vitro cultured cells ×104 were introduced into the portal vein of syngeneic BALB/c mice to induce liver metastases and, 3 weeks later metastatic foci were found in approximately 50% to 70% of the mice. In contrast, C-26 cells desialylated by neuraminidase (Nase) treatment greatly increased the incidence of hepatic metastases with countable hepatic colonies being found in all mice (100%). This result seems to be related to the liver-characteristic D-galactose receptors, since pre-injection with an excess amount of galactocerebroside completely prevented tumor colonization in the liver. Thus, although we cannot disregard the involvement of other adhesion molecules in this system as yet, our experimental model may become a useful tool for the analysis of hepatic metastases from colon cancer in the future.
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Okuno, K., Shirayama, Y., Ohnishi, H. et al. A successful liver metastasis model in mice with neuraminidase treated colon 26. Surg Today 23, 795–799 (1993). https://doi.org/10.1007/BF00311622
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DOI: https://doi.org/10.1007/BF00311622