Figure 4.
Working model. The data presented in this manuscript support the conclusion that in high systemic LDL conditions induced by a high cholesterol diet, breast tumor cells when exposed to high levels of LDL have increased intravasation capacity. Mechanistically, the data suggest that LDL induces the expression of SERPINE2 and the intercalation of tumor cells with endothelial cells. Tumor cell intercalation in blood vessels facilitates intravasation and increase the probability of metastasis.