Integrin nanoclusters can bridge thin matrix fibres to form cell–matrix adhesions
- National Univ. of Singapore (Singapore)
- Columbia Univ., New York, NY (United States); Argonne National Lab. (ANL), Lemont, IL (United States)
- Columbia Univ., New York, NY (United States)
- National Univ. of Singapore (Singapore); Univ. of Texas Medical Branch, Galveston, TX (United States)
Integrin-mediated cell-matrix adhesions are key to sensing the geometry and rigidity of extracellular environments and influence vital cellular processes. In vivo, the extracellular matrix is composed of fibrous arrays. To understand the fibre geometries that are required for adhesion formation, we patterned nanolines of various line widths and arrangements in single, crossing or paired arrays with the integrin-binding peptide Arg-Gly-Asp. Single thin lines (width ≤ 30 nm) did not support cell spreading or formation of focal adhesions, despite the presence of a high density of Arg-Gly-Asp, but wide lines (>40 nm) did. Using super-resolution microscopy, we observed stable, dense integrin clusters formed on parallel (within 110 nm) or crossing thin lines (mimicking a matrix mesh) similar to those on continuous substrates. These dense clusters bridged the line pairs by recruiting activated but unliganded integrins, as verified by integrin mutants unable to bind ligands that coclustered with ligand-bound integrins when present in an active extended conformation. Furthermore, in a fibrous extracellular matrix mesh, stable integrin nano-clusters bridge between thin (≤ 30 nm) matrix fibres and bring about downstream consequences of cell motility and growth.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- National University of Singapore; USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1756877
- Journal Information:
- Nature Materials, Journal Name: Nature Materials Journal Issue: 12 Vol. 18; ISSN 1476-1122
- Publisher:
- Springer Nature - Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Mechanotransduction in neuronal cell development and functioning
|
journal | October 2019 |
Building nanobridges for cell adhesion
|
journal | November 2019 |
Adhesion force spectroscopy with nanostructured colloidal probes reveals nanotopography-dependent early mechanotransductive interactions at the cell membrane level
|
journal | January 2020 |
Recruitment of α ν β 3 integrin to α 5 β 1 integrin-induced clusters enables focal adhesion maturation and cell spreading
|
journal | November 2019 |
Similar Records
Crystal structure of the extracellular segment of integrin {alpha}V{beta}3 in complex with an Arg-Gly-Asp ligand.
Murine lipid phosphate phosphohydrolase-3 acts as a cell-associated integrin ligand
Force via integrins but not E-cadherin decreases Oct3/4 expression in embryonic stem cells
Journal Article
·
Thu Apr 04 23:00:00 EST 2002
· Science
·
OSTI ID:949515
Murine lipid phosphate phosphohydrolase-3 acts as a cell-associated integrin ligand
Journal Article
·
Fri Sep 30 00:00:00 EDT 2005
· Biochemical and Biophysical Research Communications
·
OSTI ID:20710999
Force via integrins but not E-cadherin decreases Oct3/4 expression in embryonic stem cells
Journal Article
·
Thu Nov 17 23:00:00 EST 2011
· Biochemical and Biophysical Research Communications
·
OSTI ID:22207578