Publications associées à Cornée

In situ detection of multitarget impurities on contact lens by electrochemical scanning probe

Identifying multitarget impurities on contact lenses is challenging because traditional methods such as polymerase chain reaction cannot be used on the unknown target. Other sampling methods often require expensive antibodies or dyes. Therefore, this resea ...

ELSEVIER SCIENCE SA2023

Cyclodextrin Modulated Type I Collagen Self-Assembly to Engineer Biomimetic Cornea Implants

Francesco Stellacci, Evangelia-Nefeli Athanasopoulou

Collagen-rich tissues in the cornea exhibit unique and highly organized extracellular matrix ultrastructures, which contribute to its high load-bearing capacity and light transmittance. Corneal collagen fibrils are controlled during development by small le ...

WILEY-V C H VERLAG GMBH2018

Corneal epithelial stem cells and their niche at a glance

Freddy Radtke, Craig Nowell

The corneal epitheliumacts as a protective barrier on the anterior ocular surface and is essential for maintaining transparency of the cornea and thus visual acuity. During both homeostasis and repair, the corneal epithelium is maintained by self-renewing ...

Company Of Biologists Ltd2017

Chronic inflammation imposes aberrant cell fate in regenerating epithelia through mechanotransduction

Freddy Radtke, Matthias Lütolf, Yann Barrandon, Georg Fantner, Sylke Höhnel, Pascal Damian Odermatt, Craig Nowell, Luca Azzolin

Chronic inflammation is associated with a variety of pathological conditions in epithelial tissues, including cancer, metaplasia and aberrant wound healing. In relation to this, a significant body of evidence suggests that aberration of epithelial stem and ...

Nature Publishing Group2016

Capturing epidermal stemness

Andrea Zaffalon

Regenerative medicine aims to replace or regenerate tissues or organs to re-establish their normal function. In 1975, Rheinwald and Green developed a technique to isolate and amplify epidermal stem cells. Their discovery led to the development of cultured ...

EPFL2016

Innovative strategy of corneal epithelium regeneration using fabricated soft contact lens containing cavities for stem cells transplantation

Julien Graber

Transplantation of donor cornea is widely performed with a high success rate to treat patients with impaired corneal transparency. However the limited number of donors has led scientists to search for new technologies and treatments, including stem cell th ...

EPFL2014

Enrichment of pathogenic alleles in the brittle cornea gene, ZNF469, in keratoconus

Keratoconus, a common inherited ocular disorder resulting in progressive corneal thinning, is the leading indication for corneal transplantation in the developed world. Genome-wide association studies have identified common SNPs 100 kb upstream of ZNF469 s ...

Oxford University Press2014

Corneal Endothelial Cell Fate Is Maintained by LGR5 Through the Regulation of Hedgehog and Wnt Pathway

Yann Barrandon

Leucine-rich repeat-containing G protein-coupled receptor 5 (LGR5), a target of Wnt signaling, is reportedly a marker of intestine, stomach, and hair follicle stem cells in mice. To gain a novel insight into the role of LGR5 in human corneal tissue, we per ...

Wiley-Blackwell2013

Essential Role for Pbx1 in Corneal Morphogenesis

PURPOSE. The Pbx TALE (three-amino-acid loop extension) homeodomain proteins interact with class 1 Hox proteins, which are master regulators of cell fate decisions. This study was performed to elucidate the role of the Pbx1 TALE protein in the corneal epit ...

2010

Second harmonic generating (SHG) Nanoprobes: A new tool for biomedical imaging

Demetri Psaltis, Ye Pu, Ye Pu

Cornea functions as an outermost lens and plays an important role in vision. For cornea diagnosis and treatment, a microscopic imaging system with cellular resolution and high eye safety is strongly desired. Recently, the cell morphology of corneal epithel ...

2009

A colloidal approach to eye lens protein mixtures : relevance for cataract formation

Nicolas Dorsaz

A broad and constantly growing class of diseases, such as Alzheimer's disease, sickle-cell or cataract, involves protein association phenomena as an essential aspect. The common denominator of all the members of this class of molecular condensation disease ...

EPFL2009

Oligopotent stem cells are distributed throughout the mammalian ocular surface

Yann Barrandon, Ariane Rochat, Georges Abou Jaoudé

The integrity of the cornea, the most anterior part of the eye, is indispensable for vision. Forty- five million individuals worldwide are bilaterally blind and another 135 million have severely impaired vision in both eyes because of loss of corneal trans ...

2008

Hes1 regulates corneal development and the function of corneal epithelial stem/progenitor cells

Yann Barrandon

Hes1, a major target gene in Notch signaling, regulates the fate and differentiation of various cell types in many developmental systems. To gain a novel insight into the role of Hes1 in corneal tissue, we performed gain-of-function and loss-of-function st ...

2008

Differential requirement for beta-catenin in epithelial and fiber cells during lens development

Jörg Hülsken

Recent studies implicate Wnt/beta-catenin signaling in lens differentiation (Stump, R. J., et al., 2003. A role for Wnt/beta-catenin signaling in lens epithelial differentiation. Dev Biol;259:48-61). Beta-catenin is a component of adherens junctions and fu ...

2008

Corneal epithelial cell fate is maintained during repair by Notch1 signaling via the regulation of vitamin A metabolism

Freddy Radtke, Yann Barrandon

Integrity and preservation of a transparent cornea are essential for good vision. The corneal epithelium is stratified and nonkeratinized and is maintained and repaired by corneal stem cells. Here we demonstrate that Notch1 signaling is essential for cell ...

Cell Press - Elsevier2007

Tracking retrograde flow in keratocytes: news from the front

Jean-Jacques Meister, Sophie Bohnet, Alexander Verkhovskiy

Actin assembly at the leading edge of the cell is believed to drive protrusion, whereas membrane resistance and contractile forces result in retrograde flow of the assembled actin network away from the edge. Thus, cell motion and shape changes are expected ...

American Society for Cell Biology2005