Actin-Based Cell Protrusion in a 3D Matrix

Trends Cell Biol. 2018 Oct;28(10):823-834. doi: 10.1016/j.tcb.2018.06.003. Epub 2018 Jun 30.


Cell migration controls developmental processes (gastrulation and tissue patterning), tissue homeostasis (wound repair and inflammatory responses), and the pathobiology of diseases (cancer metastasis and inflammation). Understanding how cells move in physiologically relevant environments is of major importance, and the molecular machinery behind cell movement has been well studied on 2D substrates, beginning over half a century ago. Studies over the past decade have begun to reveal the mechanisms that control cell motility within 3D microenvironments - some similar to, and some highly divergent from those found in 2D. In this review we focus on migration and invasion of cells powered by actin, including formation of actin-rich protrusions at the leading edge, and the mechanisms that control nuclear movement in cells moving in a 3D matrix.

Keywords: actin; filopodia; invasion; lamellipodia; migration; protrusion.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Actins / metabolism*
  • Animals
  • Cell Movement
  • Cell Surface Extensions / metabolism*
  • Extracellular Matrix / metabolism*
  • Humans


  • Actins