Nano-topography sensing by osteoclasts.

doi:10.1242/JCS.060954

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Nano-topography sensing by osteoclasts.

Journal Article•DOI•

Nano-topography sensing by osteoclasts.

Dafna Geblinger¹, Lia Addadi¹, Benjamin Geiger¹•Institutions (1)

Weizmann Institute of Science¹

01 May 2010-Journal of Cell Science (The Company of Biologists Ltd)-Vol. 123, Iss: 10, pp 1503-1510

TL;DR: It was observed that steps or sub-micrometer cracks on the smooth surface stimulate local ring formation, raising the possibility that similar imperfections on bone surfaces may stimulate local osteoclast resorptive activity.

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Abstract: Bone resorption by osteoclasts depends on the assembly of a specialized, actin-rich adhesive ‘sealing zone’ that delimits the area designed for degradation. In this study, we show that the level of roughness of the underlying adhesive surface has a profound effect on the formation and stability of the sealing zone and the associated F-actin. As our primary model substrate, we use ‘smooth’ and ‘rough’ calcite crystals with average topography values of 12 nm and 530 nm, respectively. We show that the smooth surfaces induce the formation of small and unstable actin rings with a typical lifespan of ~8 minutes, whereas the sealing zones formed on the rough calcite surfaces are considerably larger, and remain stable for more than 6 hours. It was further observed that steps or sub-micrometer cracks on the smooth surface stimulate local ring formation, raising the possibility that similar imperfections on bone surfaces may stimulate local osteoclast resorptive activity. The mechanisms whereby the physical properties of the substrate influence osteoclast behavior and their involvement in osteoclast function are discussed.

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Journal Article•DOI•

Balancing forces: architectural control of mechanotransduction

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Christopher C. DuFort¹, Matthew J. Paszek¹, Valerie M. Weaver¹•Institutions (1)

University of California, San Francisco¹

01 May 2011-Nature Reviews Molecular Cell Biology

TL;DR: Sustained disruptions in tensional homeostasis can be caused by alterations in the extracellular matrix, allowing it to serve as a mechanically based memory-storage device that can perpetuate a disease or restore normal tissue behaviour.

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Abstract: All cells exist within the context of a three-dimensional microenvironment in which they are exposed to mechanical and physical cues. These cues can be disrupted through perturbations to mechanotransduction, from the nanoscale-level to the tissue-level, which compromises tensional homeostasis to promote pathologies such as cardiovascular disease and cancer. The mechanisms of such perturbations suggest that a complex interplay exists between the extracellular microenvironment and cellular function. Furthermore, sustained disruptions in tensional homeostasis can be caused by alterations in the extracellular matrix, allowing it to serve as a mechanically based memory-storage device that can perpetuate a disease or restore normal tissue behaviour.

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875 citations

Cites background from "Nano-topography sensing by osteocla..."

...On a more specific level, the spatial presentation of ECM ligands, such as fibronectin, vitronectin, laminin and collagen, and the nanotopography of the ECM, control integrin organization, adhesion assembly, and signal transduction to direct cell behaviou...
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Journal Article•DOI•

Molecular Architecture and Function of Matrix Adhesions

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Benjamin Geiger¹, Kenneth M. Yamada²•Institutions (2)

Weizmann Institute of Science¹, National Institutes of Health²

01 May 2011-Cold Spring Harbor Perspectives in Biology

TL;DR: These cell adhesions play crucial roles in cell migration, proliferation, and determination of cell fate, and are mediated by membrane receptors such as the integrins, as well as many other components that comprise the adhesome.

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Abstract: Cell adhesions mediate important bidirectional interactions between cells and the extracellular matrix. They provide an interactive interface between the extracellular chemical and physical environment and the cellular scaffolding and signaling machinery. This dynamic, reciprocal regulation of intracellular processes and the matrix is mediated by membrane receptors such as the integrins, as well as many other components that comprise the adhesome. Adhesome constituents assemble themselves into different types of cell adhesion structures that vary in molecular complexity and change over time. These cell adhesions play crucial roles in cell migration, proliferation, and determination of cell fate.

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507 citations

Cites background from "Nano-topography sensing by osteocla..."

...Cells can also respond to the micro- or even nano-topography of a surface to which they adhere (Curtis and Wilkinson 1997; Cukierman et al. 2001; Geiger et al. 2001; Baharloo et al. 2005; Grossner-Schreiber et al. 2006; Vogel et al. 2006; Geblinger et al. 2010)....
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...They can assemble into large, belt-like superstructures, and are implicated in matrix-modulating activities (e.g., bone resorption by osteoclasts (Geblinger et al. 2010) and matrix invasion by a variety of cancer cells (Gimona et al. 2008)....
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...2006), regulating their dynamic properties (Geblinger et al. 2010), and modulating their signaling activity....
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...Cells can also respond to the micro-topography or even nano-topography of a surface to which they adhere (Curtis and Wilkinson 1997; Cukierman et al. 2001; Geiger et al. 2001; Baharloo et al. 2005; Grossner-Schreiber et al. 2006; Vogel et al. 2006; Geblinger et al. 2010)....
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...…surface features that are known to play a role in guiding the formation of matrix adhesions (Cukierman et al. 2001; Geiger et al. 2001; Baharloo et al. 2005; Grossner-Schreiber et al. 2006), regulating their dynamic properties (Geblinger et al. 2010) and modulating their signaling activity....
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Journal Article•DOI•

Nanotopographical Control of Stem Cell Differentiation

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Laura E. McNamara¹, Rebecca J. McMurray¹, Manus J.P. Biggs², Fahsai Kantawong¹, Richard O.C. Oreffo³, Matthew J. Dalby¹ - Show less +2 more•Institutions (3)

University of Glasgow¹, Columbia University², University of Southampton³

01 Jan 2010-Journal of Tissue Engineering

TL;DR: Nanotopography is examined as a means to guide differentiation, and its application is described in the context of different subsets of stem cells, with a particular focus on skeletal (mesenchymal) stem cells.

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Abstract: Stem cells have the capacity to differentiate into various lineages, and the ability to reliably direct stem cell fate determination would have tremendous potential for basic research and clinical therapy. Nanotopography provides a useful tool for guiding differentiation, as the features are more durable than surface chemistry and can be modified in size and shape to suit the desired application. In this paper, nanotopography is examined as a means to guide differentiation, and its application is described in the context of different subsets of stem cells, with a particular focus on skeletal (mesenchymal) stem cells. To address the mechanistic basis underlying the topographical effects on stem cells, the likely contributions of indirect (biochemical signal-mediated) and direct (force-mediated) mechanotransduction are discussed. Data from proteomic research is also outlined in relation to topography-mediated fate determination, as this approach provides insight into the global molecular changes at the level of the functional effectors.

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349 citations

Cites background from "Nano-topography sensing by osteocla..."

...diverse cell types including fibroblasts [18, 22], osteoblasts [23], osteoclasts [24, 25], endothelial [15], smooth muscle [26], epithelial [27, 28], and epitenon cells [16]....
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Journal Article•DOI•

Degrading devices: invadosomes in proteolytic cell invasion.

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Stefan Linder, Christiane Wiesner, Mirko Himmel

10 Oct 2011-Annual Review of Cell and Developmental Biology

TL;DR: An overview of the field is provided, with special focus on current developments such as intracellular transport processes, ultrastructural analysis, the possible involvement of invadosomes in disease, and the tentative identification of invadoomes in 3D environments and in vivo.

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Abstract: Podosomes and invadopodia, collectively known as invadosomes, are cell-matrix contacts in a variety of cell types, such as monocytic cells or cancer cells, that have to cross tissue barriers. Both structures share an actin-rich core, which distinguishes them from other matrix contacts, and are regulated by a multitude of signaling pathways including RhoGTPases, kinases, actin-associated proteins, and microtubule-dependent transport. Invadosomes recruit and secrete proteinases and are thus able to lyse extracellular matrix components. They are therefore considered to be potential key structures in proteolytic cell invasion in both physiological and pathological settings. This review provides an overview of the field, with special focus on current developments such as intracellular transport processes, ultrastructural analysis, the possible involvement of invadosomes in disease, and the tentative identification of invadosomes in 3D environments and in vivo.

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346 citations

Journal Article•DOI•

Extracellular matrix networks in bone remodeling.

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Andrea I. Alford¹, Kenneth M. Kozloff¹, Kurt D. Hankenson²•Institutions (2)

University of Michigan¹, Michigan State University²

01 Aug 2015-The International Journal of Biochemistry & Cell Biology

TL;DR: This comprehensive review will focus on how networks of ECM proteins function to regulate osteoclast- and osteoblast-mediated bone remodeling and the clinical significance of these networks on normal bone and as they relate to pathologies of bone mass and geometry will be considered.

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223 citations

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Journal Article•DOI•

Matrix elasticity directs stem cell lineage specification.

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Adam J. Engler¹, Shamik Sen¹, H. Lee Sweeney¹, Dennis E. Discher•Institutions (1)

University of Pennsylvania¹

25 Aug 2006-Cell

TL;DR: Naive mesenchymal stem cells are shown here to specify lineage and commit to phenotypes with extreme sensitivity to tissue-level elasticity, consistent with the elasticity-insensitive commitment of differentiated cell types.

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12,204 citations

"Nano-topography sensing by osteocla..." refers background in this paper

...…cell proliferation, gene expression and cell viability (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Kunzler et al., 2007; Lo et al., 2000; Roach et al., 2007; Saltel et al., 2004; Vogel and Sheetz, 2006)....
[...]
...…et al., 1999; Roach et al., 2007; Shimizu et al., 1989), local density of the adhesive ligands (Arnold et al., 2004; Arnold et al., 2008; Hirschfeld-Warneken et al., 2008), and physical properties (Bershadsky et al., 2006a; Bershadsky et al., 2006b; Engler et al., 2006; Vogel and Sheetz, 2006)....
[...]
...…a widespread cellular phenomenon, whereby cells collect information on the substrate on which they grow, integrate it, and develop a response (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Vogel and Sheetz, 2006)....
[...]
...…respond to chemical and physical properties of the underlying matrix, such as rigidity, mechanical activity, ligand density and dimensionality (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Vogel and Sheetz, 2006)....
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Journal Article•DOI•

Tissue Cells Feel and Respond to the Stiffness of Their Substrate

[...]

Dennis E. Discher¹, Paul A. Janmey¹, Yu-li Wang²•Institutions (2)

University of Pennsylvania¹, University of Massachusetts Medical School²

18 Nov 2005-Science

TL;DR: An understanding of how tissue cells—including fibroblasts, myocytes, neurons, and other cell types—sense matrix stiffness is just emerging with quantitative studies of cells adhering to gels with which elasticity can be tuned to approximate that of tissues.

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Abstract: Normal tissue cells are generally not viable when suspended in a fluid and are therefore said to be anchorage dependent. Such cells must adhere to a solid, but a solid can be as rigid as glass or softer than a baby's skin. The behavior of some cells on soft materials is characteristic of important phenotypes; for example, cell growth on soft agar gels is used to identify cancer cells. However, an understanding of how tissue cells-including fibroblasts, myocytes, neurons, and other cell types-sense matrix stiffness is just emerging with quantitative studies of cells adhering to gels (or to other cells) with which elasticity can be tuned to approximate that of tissues. Key roles in molecular pathways are played by adhesion complexes and the actinmyosin cytoskeleton, whose contractile forces are transmitted through transcellular structures. The feedback of local matrix stiffness on cell state likely has important implications for development, differentiation, disease, and regeneration.

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5,889 citations

"Nano-topography sensing by osteocla..." refers background in this paper

...…a widespread cellular phenomenon, whereby cells collect information on the substrate on which they grow, integrate it, and develop a response (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Vogel and Sheetz, 2006)....
[...]
...…migration, ECM remodeling, cell proliferation, gene expression and cell viability (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Kunzler et al., 2007; Lo et al., 2000; Roach et al., 2007; Saltel et al., 2004; Vogel…...
[...]
...…respond to chemical and physical properties of the underlying matrix, such as rigidity, mechanical activity, ligand density and dimensionality (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Vogel and Sheetz, 2006)....
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Journal Article•DOI•

Geometric control of cell life and death.

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Christopher S. Chen¹, Milan Mrksich¹, Sui Huang¹, George M. Whitesides¹, Donald E. Ingber¹ - Show less +1 more•Institutions (1)

Harvard University¹

30 May 1997-Science

TL;DR: Human and bovine capillary endothelial cells were switched from growth to apoptosis by using micropatterned substrates that contained extracellular matrix-coated adhesive islands of decreasing size to progressively restrict cell extension.

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Abstract: Human and bovine capillary endothelial cells were switched from growth to apoptosis by using micropatterned substrates that contained extracellular matrix-coated adhesive islands of decreasing size to progressively restrict cell extension. Cell spreading also was varied while maintaining the total cell-matrix contact area constant by changing the spacing between multiple focal adhesion-sized islands. Cell shape was found to govern whether individual cells grow or die, regardless of the type of matrix protein or antibody to integrin used to mediate adhesion. Local geometric control of cell growth and viability may therefore represent a fundamental mechanism for developmental regulation within the tissue microenvironment.

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4,641 citations

"Nano-topography sensing by osteocla..." refers background in this paper

...…a widespread cellular phenomenon, whereby cells collect information on the substrate on which they grow, integrate it, and develop a response (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Vogel and Sheetz, 2006)....
[...]
...…respond to chemical and physical properties of the underlying matrix, such as rigidity, mechanical activity, ligand density and dimensionality (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Vogel and Sheetz, 2006)....
[...]
...…cellular processes, including adhesion, migration, ECM remodeling, cell proliferation, gene expression and cell viability (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Kunzler et al., 2007; Lo et al., 2000; Roach…...
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Journal Article•DOI•

Cell Movement Is Guided by the Rigidity of the Substrate

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Chun Min Lo¹, Hong Bei Wang¹, Micah Dembo², Yu-li Wang¹•Institutions (2)

University of Massachusetts Medical School¹, Boston University²

01 Jul 2000-Biophysical Journal

TL;DR: It is discovered that changes in tissue rigidity and strain could play an important controlling role in a number of normal and pathological processes involving cell locomotion, including morphogenesis, the immune response, and wound healing.

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3,189 citations

"Nano-topography sensing by osteocla..." refers background in this paper

...…cell proliferation, gene expression and cell viability (Bershadsky et al., 2006a; Chen et al., 1997; Diener et al., 2005; Discher et al., 2005; Engler et al., 2006; Geiger et al., 2009; Kunzler et al., 2007; Lo et al., 2000; Roach et al., 2007; Saltel et al., 2004; Vogel and Sheetz, 2006)....
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Journal Article•DOI•

Taking Cell-Matrix Adhesions to the Third Dimension

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Edna Cukierman¹, Roumen Pankov¹, Daron R. Stevens¹, Kenneth M. Yamada¹•Institutions (1)

National Institutes of Health¹

23 Nov 2001-Science

TL;DR: These distinctive in vivo 3D-matrix adhesions differ in structure, localization, and function from classically described in vitro adhesion, and as such they may be more biologically relevant to living organisms.

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Abstract: Adhesions between fibroblastic cells and extracellular matrix have been studied extensively in vitro, but little is known about their in vivo counterparts. Here, we characterized the composition and function of adhesions in three-dimensional (3D) matrices derived from tissues or cell culture. "3D-matrix adhesions" differ from focal and fibrillar adhesions characterized on 2D substrates in their content of alpha5beta1 and alphavbeta3 integrins, paxillin, other cytoskeletal components, and tyrosine phosphorylation of focal adhesion kinase (FAK). Relative to 2D substrates, 3D-matrix interactions also display enhanced cell biological activities and narrowed integrin usage. These distinctive in vivo 3D-matrix adhesions differ in structure, localization, and function from classically described in vitro adhesions, and as such they may be more biologically relevant to living organisms.

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3,000 citations

"Nano-topography sensing by osteocla..." refers background in this paper

...Many cell types react to changes in the threedimensional texture of the substrate at the nanometer- and micrometer scales, by altering their adhesion, motility and orientation (Cukierman et al., 2001; Curtis and Wilkinson, 1997; Geiger, 2001; Vogel and Sheetz, 2006)....
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...The interplay between topography, force and adhesion dynamics might also affect other, mechanosensitive adhesions such as focal adhesions, possibly accounting for changes in their stability, signaling activity and dynamics, when plated on a rough threedimensional matrix (Cukierman et al., 2001)....
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