A Unique Enhancement of Propionibacterium freudenreichii’s Ability to Remove Pb(II) from Aqueous Solution by Tween 80 Treatment

Int. J. Mol. Sci. 2022, 23(16), 9207 Microbial agents have promise for the bioremediation of Pb(II)-polluted environments and wastewater, the biodecontamination of foods, and the alleviation of toxicity in living organisms. The dairy bacterium Propionibacterium freudenreichii is poorly able to remove Pb(II) from aqueous solution at 25 ppm, ranging from 0 to 10% of initial concentration. Here, we report En savoir plus surA Unique Enhancement of Propionibacterium freudenreichii’s Ability to Remove Pb(II) from Aqueous Solution by Tween 80 Treatment[…]

Surface tension of model tissues during malignant transformation and epithelial–mesenchymal transition

Front. Cell Dev. Biol., 30 August 2022, Sec. Cell Adhesion and Migration Epithelial–mesenchymal transition is associated with migration, invasion, and metastasis. The translation at the tissue scale of these changes has not yet been enlightened while being essential in the understanding of tumor progression. Thus, biophysical tools dedicated to measurements on model tumor systems are En savoir plus surSurface tension of model tissues during malignant transformation and epithelial–mesenchymal transition[…]

Impact of Collagen Crosslinking on Dislocated Human Shoulder Capsules—Effect on Structural and Mechanical Properties

Int. J. Mol. Sci. 2022, 23(4) Classical treatments of shoulder instability are associated with recurrence. To determine whether the modification of the capsule properties may be an alternative procedure, the effect of crosslinking treatment on the structure and mechanical properties of diseased human shoulder capsules was investigated. Joint capsules harvested from patients during shoulder surgery En savoir plus surImpact of Collagen Crosslinking on Dislocated Human Shoulder Capsules—Effect on Structural and Mechanical Properties[…]

Modulation of designer biomimetic matrices for optimized differentiated intestinal epithelial cultures

Biomaterials Volume 282, March 2022 The field of intestinal biology is thirstily searching for different culture methods that complement the limitations of organoids, particularly the lack of a differentiated intestinal compartment. While being recognized as an important milestone for basic and translational biological studies, many primary cultures of intestinal epithelium (IE) rely on empirical trials En savoir plus surModulation of designer biomimetic matrices for optimized differentiated intestinal epithelial cultures[…]

DHA-phospholipids control membrane fusion and transcellular tunnel dynamics

J Cell Sci jcs.259119. | 08 DECEMBER 2021 Metabolic studies and animal knockout models point to the critical role of polyunsaturated docosahexaenoic acid (22:6, DHA)-containing phospholipids (PLs) in physiology. Here, we investigated the impact of DHA-PLs on the dynamics of transendothelial cell macroapertures (TEMs) triggered by RhoA inhibition-associated cell spreading. Lipidomic analyses show that human En savoir plus surDHA-phospholipids control membrane fusion and transcellular tunnel dynamics[…]

Interactions of hydrophilic quantum dots with defect-free and defect containing supported lipid membranes

Colloids and Surfaces B: Biointerfaces Volume 210, February 2022, 112239 Quantum dots (QDs) are semiconductor nanoparticles with unique optical and electronic properties, whose interest as potential nano-theranostic platforms for imaging and sensing is increasing. The design and use of QDs requires the understanding of cell-nanoparticle interactions at a microscopic and nanoscale level. Model systems such En savoir plus surInteractions of hydrophilic quantum dots with defect-free and defect containing supported lipid membranes[…]

Cell monolayers sense curvature by exploiting active mechanics and nuclear mechanoadaptation

Nature Physics (2021) The early development of many organisms involves the folding of cell monolayers, but this behaviour is difficult to reproduce in vitro; therefore, both mechanistic causes and effects of local curvature remain unclear. Here we study epithelial cell monolayers on corrugated hydrogels engineered into wavy patterns, examining how concave and convex curvatures affect En savoir plus surCell monolayers sense curvature by exploiting active mechanics and nuclear mechanoadaptation[…]

Adherent-Invasive and Non-Invasive Escherichia coli Isolates Differ in Their Effects on Caenorhabditis elegans’ Lifespan

Microorganisms 2021, 9(9), 1823 Le pathotype Escherichia coli adhérent-invasif (AIEC) a été impliqué dans la pathogenèse des maladies inflammatoires de l’intestin en général et dans la maladie de Crohn (MC) en particulier. Les souches AIEC sont principalement caractérisées par leur capacité à adhérer aux cellules épithéliales intestinales et à les envahir. Cependant, les caractéristiques génétiques En savoir plus surAdherent-Invasive and Non-Invasive Escherichia coli Isolates Differ in Their Effects on Caenorhabditis elegans’ Lifespan[…]

Persistence and dynamics of fluorescent Lactobacillus plantarum in the healthy versus inflamed gut

Gut Microbes, Published online: 28 Mar 2021 The gastrointestinal tract is the main ecological niche in which Lactobacillus strains may provide health benefits in mammals. There is currently a need to characterize host-microbe interactions in space and time by tracking these bacteria in vivo. We combined noninvasive whole-body imaging with ex vivo fluorescence confocal microscopy En savoir plus surPersistence and dynamics of fluorescent Lactobacillus plantarum in the healthy versus inflamed gut[…]

Assessment of Pb(II), Cd(II), and Al(III) Removal Capacity of Bacteria from Food and Gut Ecological Niches: Insights into Biodiversity to Limit Intestinal Biodisponibility of Toxic Metals

Published: 22 February 2021, Microorganisms Toxic metals (such as lead, cadmium, and, to a lesser extent, aluminum) are detrimental to health when ingested in food or water or when inhaled. By interacting with heavy metals, gut and food-derived microbes can actively and/or passively modulate (by adsorption and/or seques- tration) the bioavailability of these toxins inside En savoir plus surAssessment of Pb(II), Cd(II), and Al(III) Removal Capacity of Bacteria from Food and Gut Ecological Niches: Insights into Biodiversity to Limit Intestinal Biodisponibility of Toxic Metals[…]