Results 131 to 140 of about 277,155 (334)
Integration of the Second Messenger c-di-GMP into the Chemotactic Signaling Pathway
mBio, 2013 Elevated intracellular levels of the bacterial second messenger c-di-GMP are known to suppress motility and promote sessility. Bacterial chemotaxis guides motile cells in gradients of attractants and repellents over broad concentration ranges, thus ...
Matthew H. Russell +6 more
doaj +1 more source
A reducing mechanism on wave speed for chemotaxis systems with degenerate diffusion [PDF]
arXiv, 2020 This paper is concerned with traveling wave solutions for a chemotaxis model with degenerate diffusion of porous medium type. We establish the existence of semi-finite traveling waves, including the sharp type and $C^1$ type semi-finite waves. Our results indicate that chemotaxis slows down the wave speed of semi-finite traveling wave, that is, the ...
arxiv
Advanced Theory and Simulations, EarlyView.This study presents a robust 3D simulation for BBMC, focusing on both fixed and receding receiver scenarios across various conditions. Key parameters such as D, Q, u, and d are tested at different values to assess the performance and reliability of BBMC in applications like drug delivery, addressing critical challenges in nanoscale communication with ...
Mustafa Ozan Duman +3 more
wiley +1 more source
Adaptation kinetics in bacterial chemotaxis [PDF]
, 1983 Cells of Escherichia coli, tethered to glass by a single flagellum, were subjected to constant flow of a medium containing the attractant alpha-methyl-DL-aspartate. The concentration of this chemical was varied with a programmable mixing apparatus over a
Berg, Howard C. +2 more
core +1 more source
Advanced Science, EarlyView.Activation of HTR2B suppresses osteosarcoma progression through the STAT1‐NLRP3 inflammasome pathway and promotes OASL1+ Macrophage production to enhance anti‐tumor immunity. Abstract Osteosarcoma is a primary malignant bone tumor originating from mesenchymal tissue, and associated with poor prognosis.
Zhen Huang +7 more
wiley +1 more source
Sugar Functionalized Collagen Material for Local Modulation of Innate Immunity
Advanced Science, EarlyView.Modulation of the innate immune response at the implant site can significantly influence adaptive immunity. A mannose‐functionalized collagen patch, termed the Local Immunotuning Patch (LIP), has been designed to engage mannose receptors on antigen‐presenting cells while exhibiting antibacterial properties. LIP orchestrates complex immune pathways that
Francesca Taraballi +10 more
wiley +1 more source
Relation between chemotaxis and consumption of amino acids in bacteria
Molecular Microbiology, 2015 Chemotaxis enables bacteria to navigate chemical gradients in their environment, accumulating toward high concentrations of attractants and avoiding high concentrations of repellents.
Yiling Yang +6 more
semanticscholar +1 more source
Bacterial chemotaxis without gradient-sensing [PDF]
, 2013 Models for chemotaxis are based on gradient sensing of individual organisms. The key contribution of Keller and Segel is showing that erratic movements of individuals may result in an accurate chemotaxis phenomenon as a group.
Kim, Yong-Jung, Yoon, Changwook
core
Pattern formation of a volume-filling chemotaxis model with a bistable source
AIMS MathematicsIn this paper, the pattern formation of a volume-filling chemotaxis model with bistable source terms was studied. First, it was shown that self-diffusion does not induce Turing patterns, but chemotaxis-driven instability occurs.
Zuojun Ma
doaj +1 more source
Advanced Science, EarlyView.This study reveals that M2‐EVs mitigate periodontitis‐induced bone resorption by modulating neutrophil fate. Single‐cell RNA sequencing identified an Anxa1hi neutrophil subpopulation with pro‐reparative properties. M2‐EVs disrupt neutrophil maturation, promoting this subpopulation through key reprogramming genes (Acvrl1, Fpr2). These findings highlight
Yufei Yao +7 more
wiley +1 more source