title: Dynamics of cancerous tissue correlates with invasiveness.
abstract: Two of the classical hallmarks of cancer are uncontrolled cell division and tissue invasion, which turn the disease into a systemic, life-threatening condition. Although both processes are studied, a clear correlation between cell division and motility of cancer cells has not been described previously. Here, we experimentally characterize the dynamics of invasive and non-invasive breast cancer tissues using human and murine model systems. The intrinsic tissue velocities, as well as the divergence and vorticity around a dividing cell correlate strongly with the invasive potential of the tissue, thus showing a distinct correlation between tissue dynamics and aggressiveness. We formulate a model which treats the tissue as a visco-elastic continuum. This model provides a valid reproduction of the cancerous tissue dynamics, thus, biological signaling is not needed to explain the observed tissue dynamics. The model returns the characteristic force exerted by an invading cell and reveals a strong correlation between force and invasiveness of breast cancer cells, thus pinpointing the importance of mechanics for cancer invasion.
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Ann-Katrine Vransø
authors.initials: AV
authors.lastname: West
authors.affiliation: Biotech Research &Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen, Denmark.
authors.forename: Lena
authors.initials: L
authors.lastname: Wullkopf
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Amalie
authors.initials: A
authors.lastname: Christensen
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Natascha
authors.initials: N
authors.lastname: Leijnse
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Jens Magelund
authors.initials: JM
authors.lastname: Tarp
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Joachim
authors.initials: J
authors.lastname: Mathiesen
authors.affiliation: Biotech Research &Innovation Centre (BRIC), University of Copenhagen, Ole Maaløes Vej 5, 2200 Copenhagen, Denmark.
authors.forename: Janine Terra
authors.initials: JT
authors.lastname: Erler
authors.affiliation: Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen, Denmark.
authors.forename: Lene Broeng
authors.initials: LB
authors.lastname: Oddershede
mesh_terms: D000465:Algorithms; D000818:Animals; D001943:Breast Neoplasms / Q000473:pathology; D045744:Cell Line, Tumor; D002465:Cell Movement; D006801:Humans; D007700:Kinetics; D061986:MCF-7 Cells; D015674:Mammary Neoplasms, Animal / Q000473:pathology; D051379:Mice; D008858:Microscopy, Phase-Contrast; D008954:Models, Biological; D009361:Neoplasm Invasiveness; D059008:Time-Lapse Imaging / Q000379:methods*