Actomyosin contractility-dependent matrix stretch and recoil induces rapid cell migration

Nat Commun. 2019 Mar 12;10(1):1186. doi: 10.1038/s41467-019-09121-0.

Abstract

Cells select from a diverse repertoire of migration strategies. Recent developments in tunable biomaterials have helped identify how extracellular matrix properties influence migration, however, many settings lack the fibrous architecture characteristic of native tissues. To investigate migration in fibrous contexts, we independently varied the alignment and stiffness of synthetic 3D fiber matrices and identified two phenotypically distinct migration modes. In contrast to stiff matrices where cells migrated continuously in a traditional mesenchymal fashion, cells in deformable matrices stretched matrix fibers to store elastic energy; subsequent adhesion failure triggered sudden matrix recoil and rapid cell translocation. Across a variety of cell types, traction force measurements revealed a relationship between cell contractility and the matrix stiffness where this migration mode occurred optimally. Given the prevalence of fibrous tissues, an understanding of how matrix structure and mechanics influences migration could improve strategies to recruit repair cells to wound sites or inhibit cancer metastasis.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't
  • Video-Audio Media

MeSH terms

  • Acrylic Resins / chemistry
  • Actomyosin / physiology*
  • Amides / pharmacology
  • Animals
  • Biocompatible Materials / chemistry
  • Cell Line, Tumor
  • Cell Movement / drug effects
  • Cell Movement / physiology*
  • Dextrans / chemistry
  • Elastic Modulus / drug effects
  • Extracellular Matrix / physiology*
  • Fibroblasts
  • Heterocyclic Compounds, 4 or More Rings / pharmacology
  • Humans
  • Intravital Microscopy / methods
  • Marine Toxins
  • Materials Testing / methods
  • Methacrylates / chemistry
  • Mice
  • Microscopy, Confocal
  • NIH 3T3 Cells
  • Oxazoles / pharmacology
  • Pyridines / pharmacology
  • Time-Lapse Imaging

Substances

  • Acrylic Resins
  • Amides
  • Biocompatible Materials
  • Dextrans
  • Heterocyclic Compounds, 4 or More Rings
  • Marine Toxins
  • Methacrylates
  • Oxazoles
  • Pyridines
  • methacrylated dextran
  • polyacrylamide gels
  • Y 27632
  • blebbistatin
  • calyculin A
  • Actomyosin