Results 151 to 160 of about 519,825 (333)

Spatio-temporal dynamics of an active, polar, viscoelastic ring

open access: yes, 2014
Constitutive equations for a one-dimensional, active, polar, viscoelastic liquid are derived by treating the strain field as a slow hydrodynamic variable.
Marcq, Philippe
core   +2 more sources

Patterning the Void: Combining L‐Systems with Archimedean Tessellations as a Perspective for Tissue Engineering Scaffolds

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a novel multi‐scale scaffold design using L‐fractals arranged in Archimedean tessellations for tissue regeneration. Despite similar porosity, tiles display vastly different tensile responses (1–100 MPa) and deformation modes. In vitro experiments with hMSCs show geometry‐dependent growth and activity. Over 55 000 tile combinations
Maria Kalogeropoulou   +4 more
wiley   +1 more source

The Tight Junction Protein ZO-1 Establishes a Link between the Transmembrane Protein Occludin and the Actin Cytoskeleton*

open access: yesJournal of Biological Chemistry, 1998
The tight junction protein ZO-1 belongs to a family of multidomain proteins known as the membrane-associated guanylate kinase homologs (MAGUKs). ZO-1 has been demonstrated to interact with the transmembrane protein occludin, a second tight junction ...
A. Fanning   +3 more
semanticscholar   +1 more source

Integrin signaling to the actin cytoskeleton

open access: yesCurrent Opinion in Cell Biology, 2003
Integrin engagement stimulates the activity of numerous signaling molecules, including the Rho family of GTPases, tyrosine phosphatases, cAMP-dependent protein kinase and protein kinase C, and stimulates production of PtdIns(4,5)P2. Integrins promote actin assembly via the recruitment of molecules that directly activate the actin polymerization ...
Kris A, DeMali   +2 more
openaire   +3 more sources

3D Multicellular Scaffold Based Model for Advancing Bone Disorder Research

open access: yesAdvanced Functional Materials, EarlyView.
A scalable 3D multicellular in vitro bone model engineered by integrating osteoblasts, osteoclasts, and endothelial cells on biodegradable scaffolds. The system recapitulates key features of human bone remodeling and disease pathology. As a proof of concept, the model mimics osteogenesis imperfecta, demonstrating its potential as a physiologically ...
Gali Guterman‐Ram   +5 more
wiley   +1 more source

Substrate Stress Relaxation Regulates Cell‐Mediated Assembly of Extracellular Matrix

open access: yesAdvanced Functional Materials, EarlyView.
Silicone‐based viscoelastic substrates with tunable stress relaxation reveal how matrix mechanics regulates cellular mechanosensing and cell‐mediated matrix remodelling in the stiff regime. High stress relaxation promotes assembly of fibronectin fibril‐like structures, increased nuclear localization of YAP and formation of β1 integrin‐enriched ...
Jonah L. Voigt   +2 more
wiley   +1 more source

Actin cytoskeleton in dendritic spine

open access: yesFolia Pharmacologica Japonica, 2007
樹状突起スパインは脳内の主要な興奮性シナプス後部であり,その形態および構成タンパク質の可塑的変化は学習記憶などの高次機能に重要である.スパイン内の構造体としては,シナプス後部肥厚(PSD)とアクチン細胞骨格があり,スパインの形態変化は主にアクチン細胞骨格により制御されている.スパイン内ではその頭部と頸部でアクチン線維の構造が異なることに加えて,頭部の中でもシナプス直下のPSD近傍と細胞質の中心領域でアクチン結合タンパク質の分布が異なる.したがって,スパインは3種類の性質の異なるアクチン細胞骨格によって構成されていると考えられる.アクチンを脱重合させると,多くのスパイン構成タンパク質の局在が不安定化し,スパイン形態もフィロポディア様に変化する.従って,アクチン細胞骨格がスパイン形態の形成 ...
Kenji, Hanamura, Tomoaki, Shirao
openaire   +3 more sources

Implementation of Drug‐Induced Rhabdomyolysis and Acute Kidney Injury in Microphysiological System

open access: yesAdvanced Functional Materials, EarlyView.
A modular Muscle–Kidney proximal tubule‐on‐a‐chip integrates 3D skeletal muscle and renal proximal tubule tissues to model drug‐induced rhabdomyolysis and acute kidney injury. The coculture system enables dynamic tissue interaction, functional contraction monitoring, and quantification of nephrotoxicity, revealing drug side effect‐induced metabolic ...
Jaesang Kim   +4 more
wiley   +1 more source

A novel class of anticancer compounds targets the actin cytoskeleton in tumor cells.

open access: yesCancer Research, 2013
The actin cytoskeleton is a potentially vulnerable property of cancer cells, yet chemotherapeutic targeting attempts have been hampered by unacceptable toxicity.
J. Stehn   +22 more
semanticscholar   +1 more source

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