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

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

Research output: Contribution to journalArticlepeer-review

126 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)2120-2131
Number of pages12
JournalJournal of cell science
Issue number13
StatePublished - Jul 1 2011


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

ASJC Scopus subject areas

  • Cell Biology


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