Cited by 900Cellular Mechanics and InteractionsSkin and Cellular Biology ResearchMicrotubule and mitosis dynamics

Actin stress fibers – assembly, dynamics and biological roles

Tojkander, Sari, Gateva, Gergana, Lappalainen, Pekka·2012·Journal of Cell Science

Abstract

Actin filaments assemble into diverse protrusive and contractile structures to provide force for a number of vital cellular processes. Stress fibers are contractile actomyosin bundles found in many cultured non-muscle cells, where they have a central role in cell adhesion and morphogenesis. Focal-adhesion-anchored stress fibers also have an important role in mechanotransduction. In animal tissues, stress fibers are especially abundant in endothelial cells, myofibroblasts and epithelial cells. Importantly, recent live-cell imaging studies have provided new information regarding the mechanisms of stress fiber assembly and how their contractility is regulated in cells. In addition, these studies might elucidate the general mechanisms by which contractile actomyosin arrays, including muscle cell myofibrils and cytokinetic contractile ring, can be generated in cells. In this Commentary, we discuss recent findings concerning the physiological roles of stress fibers and the mechanism by which these structures are generated in cells.

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Crossref · 10.1242/jcs.098087

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155 of 155 references verified0 citation errors · 0 not checkable

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  • Bounds of the bending force applied to the first anchor point were determined using literature values, resulting in P1 = Pmax = 0.12-2.25 nN.

    “Bounds of the bending force applied to the first anchor point were determined using literature values for the force exerted by each active myosin-II dimer, the number of myosin-II dimers Nmyo per actin filament and the number of actin filaments in each stress filament Nactin (Eq. 3 in Appendix A) [35, 36], resulting in P1 = Pmax = 0.12–2.25 nN.”

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Authors
Tojkander, S., Gateva, G., & Lappalainen, P.
Affiliations
University of Helsinki (FI)
Corresponding author
Lappalainen, Pekka
Venue
Journal of Cell Science
Published
2012-01-01
Volume
125
Issue
Pt 8
Pages
1855-64
ISSN
  • 0021-9533 (ISSN-L)
  • 1477-9137
OpenAlex
W2151492748
Cited by
900
References
155
Citations by year
2026: 23 · 2025: 59 · 2024: 68 · 2023: 59 · 2022: 61 · 2021: 100 · 2020: 99 · 2019: 85 · 2018: 53 · 2017: 73 · 2016: 66 · 2015: 66 · 2014: 48 · 2013: 35 · 2012: 5
FWCI
23.20
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Cell Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
Academy of Finland
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Skin and Cellular Biology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
Keywords
stress fibers, actomyosin contractility, focal adhesions, mechanotransduction, cell adhesion, cell morphogenesis, endothelial cells, myofibroblasts, epithelial cells, contractile ring, myofibrils, non-muscle cells
MeSH terms
Actins, Animals, Cell Adhesion, Cell Movement, Humans, Stress Fibers, Mechanotransduction, Cellular

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