scholarly journals Keratin 6 regulates collective keratinocyte migration by altering cell–cell and cell–matrix adhesion

2018 ◽  
Vol 217 (12) ◽  
pp. 4314-4330 ◽  
Author(s):  
Fengrong Wang ◽  
Song Chen ◽  
Hans B. Liu ◽  
Carole A. Parent ◽  
Pierre A. Coulombe
Keyword(s):  
Cell Adhesion ◽  
Collective Cell Migration ◽  
Type Ii ◽  
Keratinocyte Migration ◽  
Cell Matrix ◽  
Interfollicular Epidermis ◽  
Migration Potential ◽  
Cell Matrix Adhesion ◽  
Cell Cell ◽  
Keratin 6

The a and b isoforms of keratin 6 (K6), a type II intermediate filament (IF) protein, are robustly induced upon injury to interfollicular epidermis. We previously showed that complete loss of K6a/K6b stimulates keratinocyte migration, correlating with enhanced Src activity. In this study, we demonstrate that this property is cell autonomous, depends on the ECM, and results from elevated speed, enhanced directionality, and an increased rate of focal adhesion disassembly. We show that myosin IIA interacts with K6a/K6b, that its levels are markedly reduced in Krt6a/Krt6b-null keratinocytes, and that inhibiting myosin ATPase activity normalizes the enhanced migration potential of Krt6a/Krt6b-null cells. Desmoplakin, which mediates attachment of IFs to desmosomes, is also expressed at reduced levels and is mislocalized to the nucleus in Krt6a/Krt6b-null cells, correlating with defects in cell adhesion. These findings reveal that K6a/K6b modulate keratinocyte migration by regulating cell–matrix and cell–cell adhesion and highlight a role for keratins in collective cell migration.

scholarly journals Cell-matrix adhesion and cell-cell adhesion differentially control basal myosin oscillation and Drosophila egg chamber elongation

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Xiang Qin ◽  
Byung Ouk Park ◽  
Jiaying Liu ◽  
Bing Chen ◽  
Valerie Choesmel-Cadamuro ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Egg Chamber ◽  
Cell Matrix Adhesion ◽  
Cell Cell

Regulation of cell???matrix adhesion and potentially also cell???cell adhesion by MIA

2006 ◽  
Vol 16 (Supplement 1) ◽  
pp. S18-S19
Author(s):  
A. Winklmeier ◽  
R. Bauer ◽  
S. Arndt ◽  
A. Bosserhoff
Keyword(s):  
Cell Adhesion ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Cell Matrix Adhesion ◽  
Cell Cell

scholarly journals DISC1 regulates cell–cell adhesion, cell–matrix adhesion and neurite outgrowth

2010 ◽  
Vol 15 (8) ◽  
pp. 798-809 ◽  
Author(s):  
T Hattori ◽  
S Shimizu ◽  
Y Koyama ◽  
K Yamada ◽  
R Kuwahara ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Neurite Outgrowth ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Cell Matrix Adhesion ◽  
Cell Cell

MATHEMATICAL MODELLING OF CANCER INVASION: THE IMPORTANCE OF CELL–CELL ADHESION AND CELL–MATRIX ADHESION

2011 ◽  
Vol 21 (04) ◽  
pp. 719-743 ◽  
Author(s):  
MARK A. J. CHAPLAIN ◽  
MIROSŁAW LACHOWICZ ◽  
ZUZANNA SZYMAŃSKA ◽  
DARIUSZ WRZOSEK
Keyword(s):  
Extracellular Matrix ◽  
Cell Adhesion ◽  
Cancer Cells ◽  
Classical Solutions ◽  
Invasion Process ◽  
Open Problems ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Cell Matrix Adhesion ◽  
Cell Cell

The process of invasion of tissue by cancer cells is crucial for metastasis — the formation of secondary tumours — which is the main cause of mortality in patients with cancer. In the invasion process itself, adhesion, both cell–cell and cell–matrix, plays an extremely important role. In this paper, a mathematical model of cancer cell invasion of the extracellular matrix is developed by incorporating cell–cell adhesion as well as cell–matrix adhesion into the model. Considering the interactions between cancer cells, extracellular matrix and matrix degrading enzymes, the model consists of a system of reaction–diffusion partial integro–differential equations, with nonlocal (integral) terms describing the adhesive interactions between cancer cells and the host tissue, i.e. cell–cell adhesion and cell–matrix adhesion. Having formulated the model, we prove the existence and uniqueness of global in time classical solutions which are uniformly bounded. Then, using computational simulations, we investigate the effects of the relative importance of cell–cell adhesion and cell–matrix adhesion on the invasion process. In particular, we examine the roles of cell–cell adhesion and cell–matrix adhesion in generating heterogeneous spatio-temporal solutions. Finally, in the discussion section, concluding remarks are made and open problems are indicated.

scholarly journals Rap1GAP impairs cell-matrix adhesion in the absence of effects on cell-cell adhesion

2011 ◽  
Vol 5 (4) ◽  
pp. 323-331 ◽  
Author(s):  
Lisa A. Vuchak ◽  
Oxana M. Tsygankova ◽  
Judy L. Meinkoth
Keyword(s):  
Cell Adhesion ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Cell Matrix Adhesion ◽  
Cell Cell

Differential effects of histamine and thrombin on endothelial barrier function through actin-myosin tension

2002 ◽  
Vol 282 (1) ◽  
pp. H21-H29 ◽  
Author(s):  
Alan B. Moy ◽  
Ken Blackwell ◽  
Anant Kamath
Keyword(s):  
Cell Adhesion ◽  
Barrier Function ◽  
Umbilical Vein ◽  
Collagen Membrane ◽  
Tension Development ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Adhesion Sites ◽  
Cell Matrix Adhesion ◽  
Cell Cell

We compared temporal changes in isometric tension in cultured human umbilical vein endothelial cells inoculated on a polymerized collagen membrane with changes in cell-cell and cell-matrix adhesion derived by a mathematical model of transendothelial cell resistance. Thrombin and histamine disrupt barrier function by targeting a greater loss in cell-cell adhesion, which preceded losses in overall transendothelial resistance. There were minor losses in cell-matrix adhesion, which was temporally slower than the decline in the overall transendothelial resistance. In contrast, thrombin and histamine restored barrier function by initiating a restoration of cell-matrix adhesion, which occurred before an increase in overall transendothelial resistance. Thrombin mediated a second and slower decline in cell-cell adhesion, which was not observed in histamine-treated cells. This decline in cell-cell adhesion temporally correlated with expressed maximal levels of tension development, suggesting that actin-myosin contraction directly strains cell-cell adhesion sites. Pretreatment of cells with ML-7 mediated more rapid recovery of cell-cell adhesion and had no effect on cell-matrix adhesion. Taken together, expression of actin-myosin contraction affects the restoration of barrier function by straining cell-cell adhesion sites.

scholarly journals RAP1-RAC1 Signaling Has an Important Role in Adhesion and Migration in HNSCC

2020 ◽  
Vol 99 (8) ◽  
pp. 959-968 ◽  
Author(s):  
M. Liu ◽  
R. Banerjee ◽  
C. Rossa ◽  
N.J. D’Silva
Keyword(s):  
Cell Migration ◽  
Cell Adhesion ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
And Migration ◽  
Rap1 Activation ◽  
Cell Matrix Adhesion ◽  
Α5β1 Integrin ◽  
Hnscc Cell ◽  
Cell Cell

Cell-cell adhesion is a key mechanism to control tissue integrity and migration. In head and neck squamous cell carcinoma (HNSCC), cell migration facilitates distant metastases and is correlated with poor prognosis. RAP1, a ras-like protein, has an important role in the progression of HNSCC. RAC1 is an integrin-linked, ras-like protein that promotes cell migration. Here we show that loss of cell-cell adhesion is correlated with inactivation of RAP1 confirmed by 2 different biochemical approaches. RAP1 activation is required for cell-matrix adhesion confirmed by adhesion to fibronectin-coated plates with cells that have biochemically activated RAP1. This effect is reversed when RAP1 is inactivated. In addition, RAP1GTP-mediated adhesion is only facilitated through α5β1 integrin complex and is not a function of either α5 or β1 integrin alone. Moreover, the inside-out signaling of RAP1 activation is coordinated with RAC1 activation. These findings show that RAP1 has a prominent role in cell-matrix adhesion via extracellular matrix molecule fibronectin-induced α5β1 integrin and supports a critical role for the RAP1/RAC1 signaling axis in HNSCC cell migration.

scholarly journals Epithelial Morphogenesis Driven by Cell-Matrix vs. Cell-Cell Adhesion

2020 ◽  
Author(s):  
Shaohe Wang ◽  
Kazue Matsumoto ◽  
Kenneth M. Yamada
Keyword(s):  
Cell Adhesion ◽  
Single Cell ◽  
Cell Sheet ◽  
Branching Morphogenesis ◽  
Epithelial Morphogenesis ◽  
Epithelial Surface ◽  
Matrix Adhesion ◽  
Cell Matrix ◽  
Cell Matrix Adhesion ◽  
Cell Cell

SUMMARYMany embryonic organs undergo epithelial morphogenesis to form tree-like hierarchical structures. However, it remains unclear what drives the budding and branching of stratified epithelia, such as in embryonic salivary gland and pancreas. Here, we performed live-organ imaging of mouse embryonic salivary glands at single-cell resolution to reveal that budding morphogenesis is driven by expansion and folding of a distinct epithelial surface cell sheet characterized by strong cell-matrix adhesions and weak cell-cell adhesions. Profiling of single-cell transcriptomes of this epithelium revealed spatial patterns of transcription underlying these cell adhesion differences. We then synthetically reconstituted budding morphogenesis by experimentally suppressing E-cadherin expression and inducing basement membrane formation in 3D spheroid cultures of engineered cells, which required β1 integrin-mediated cell-matrix adhesion for successful budding. Thus, stratified epithelial budding, the key first step of branching morphogenesis, is driven by an overall combination of strong cell-matrix adhesion and weak cell-cell adhesion by peripheral epithelial cells.

scholarly journals Arginylation-dependent regulation of a proteolytic product of talin is essential for cell–cell adhesion

2012 ◽  
Vol 197 (6) ◽  
pp. 819-836 ◽  
Author(s):  
Fangliang Zhang ◽  
Sougata Saha ◽  
Anna Kashina
Keyword(s):  
Cell Adhesion ◽  
Cell Attachment ◽  
Adhesion Formation ◽  
Cell Matrix ◽  
Intracellular Regulation ◽  
Dependent Cell ◽  
Cell Matrix Adhesion ◽  
Proteolytic Product ◽  
Cell Cell

Talin is a large scaffolding molecule that plays a major role in integrin-dependent cell–matrix adhesion. A role for talin in cell–cell attachment through cadherin has never been demonstrated, however. Here, we identify a novel calpain-dependent proteolytic cleavage of talin that results in the release of a 70-kD C-terminal fragment, which serves as a substrate of posttranslational arginylation. The intracellular levels of this fragment closely correlated with the formation of cell–cell adhesions, and this fragment localized to cadherin-containing cell–cell contacts. Moreover, reintroduction of this fragment rescued the cell–cell adhesion defects in arginyltransferase (Ate1) knockout cells, which normally have a very low level of this fragment. Arginylation of this fragment further enhanced its ability to rescue cell–cell adhesion formation. In addition, arginylation facilitated its turnover, suggesting a dual role of arginylation in its intracellular regulation. Thus, our work identifies a novel proteolytic product of talin that is regulated by arginylation and a new role of talin in cadherin-dependent cell–cell adhesion.

Sign in / Sign up

Export Citation Format

Share Document