Mena invasive (Mena(INV)) promotes multicellular streaming motility and transendothelial migration in a mouse model of breast cancer

作者：Roussos Evanthia T^*; Balsamo Michele; Alford Shannon K; Wyckoff Jeffrey B; Gligorijevic Bojana; Wang Yarong; Pozzuto Maria; Stobezki Robert; Goswami Sumanta; Segall Jeffrey E; Lauffenburger Douglas A; Bresnick Anne R; Gertler Frank B; Condeelis John S

来源：Journal of Cell Science, 2011, 124(13): 2120-2131.

DOI：10.1242/jcs.086231

• Breast cancer
• Cell motility
• Intravital imaging
• Metastasis
• Transendothelial migration

We have shown previously that distinct Mena isoforms are expressed in invasive and migratory tumor cells in vivo and that the invasion isoform (Mena(INV)) potentiates carcinoma cell metastasis in murine models of breast cancer. However, the specific step of metastatic progression affected by this isoform and the effects on metastasis of the Mena11a isoform, expressed in primary tumor cells, are largely unknown. Here, we provide evidence that elevated Mena(INV) increases coordinated streaming motility, and enhances transendothelial migration and intravasation of tumor cells. We demonstrate that promotion of these early stages of metastasis by Mena(INV) is dependent on a macrophage-tumor cell paracrine loop. Our studies also show that increased Mena11a expression correlates with decreased expression of colony-stimulating factor 1 and a dramatically decreased ability to participate in paracrine-mediated invasion and intravasation. Our results illustrate the importance of paracrine-mediated cell streaming and intravasation on tumor cell dissemination, and demonstrate that the relative abundance of Mena(INV) and Mena11a helps to regulate these key stages of metastatic progression in breast cancer cells.

• 出版日期2011-7-1
• 单位MIT