Results 91 to 100 of about 134,430 (166)

Dual function of Slit2 in repulsion and enhanced migration of trunk, but not vagal, neural crest cells [PDF]

open access: yes, 2003
Neural crest precursors to the autonomic nervous system form different derivatives depending upon their axial level of origin; for example, vagal, but not trunk, neural crest cells form the enteric ganglia of the gut.
Bronner-Fraser, Marianne   +2 more
core   +5 more sources

Protein connectivity in chemotaxis receptor complexes [PDF]

open access: yes, 2015
The chemotaxis sensory system allows bacteria such as Escherichia coli to swim towards nutrients and away from repellents. The underlying pathway is remarkably sensitive in detecting chemical gradients over a wide range of ambient concentrations. Interactions among receptors, which are predominantly clustered at the cell poles, are crucial to this ...
arxiv   +1 more source

Adhesion of membranes via receptor-ligand complexes: Domain formation, binding cooperativity, and active processes [PDF]

open access: yes, 2009
Cell membranes interact via anchored receptor and ligand molecules. Central questions on cell adhesion concern the binding affinity of these membrane-anchored molecules, the mechanisms leading to the receptor-ligand domains observed during adhesion, and the role of cytoskeletal and other active processes.
arxiv   +1 more source

Effects of Ox-LDL on Macrophages NAD(P)H Autofluorescence Changes by Two-photon Microscopy [PDF]

open access: yesDans European Nano Systems Worshop - ENS 2005, Paris : France (2005), 2007
Ox-LDL uptakes by macrophage play a critical role in the happening of atherosclerosis. Because of its low damage on observed cells and better signal-to- background ratio, two-photon excitation fluorescence microscopy is used to observe NAD(P)H autofluorescence of macrophage under difference cultured conditions- bare cover glass, coated with fibronectin
arxiv  

Bistability of cell-matrix adhesions resulting from non-linear receptor-ligand dynamics [PDF]

open access: yes, 2006
Bistability is a major mechanism for cellular decision making and usually results from positive feedback in biochemical control systems. Here we show theoretically that bistability between unbound and bound states of adhesion clusters results from ...
Angeli   +8 more
core   +2 more sources

Imaging Gold Nanoparticles in Living Cells Environments using Heterodyne Digital Holographic Microscopy

open access: yes, 2009
This paper describes an imaging microscopic technique based on heterodyne digital holography where subwavelength-sized gold colloids can be imaged in cell environment.
Absil   +34 more
core   +1 more source

CXCL12 Modulates Prostate Cancer Cell Adhesion by Altering the Levels or Activities of β1-Containing Integrins

open access: yesInternational Journal of Cell Biology, 2014
The mechanisms by which prostate cancer (PCa) cell adhesion and migration are controlled during metastasis are not well understood. Here, we studied the effect of CXCL12 in PCa cell adhesion and spreading in DU145 and PC3 cell lines using as substrates ...
Mehdi Dehghani   +3 more
doaj   +1 more source

The role of collagen in cancer: from bench to bedside

open access: yesJournal of Translational Medicine, 2019
Collagen is the major component of the tumor microenvironment and participates in cancer fibrosis. Collagen biosynthesis can be regulated by cancer cells through mutated genes, transcription factors, signaling pathways and receptors; furthermore ...
Shuaishuai Xu   +8 more
doaj   +1 more source

Extracellular matrix and integrins influence in the regulation of myogenic precursor cells behaviour [PDF]

open access: yes, 2009
Tese de mestrado, Biologia (Biologia Molecular Humana), 2009, Universidade de Lisboa, Faculdade de CiênciasMyogenesis is the process by which undifferentiated dermomyotomal cells are specified for myogenesis, move towards the myotome where they ...
Vaz, Raquel Rodrigues
core  

Expression of a beta 1-related integrin by oligodendroglia in primary culture: evidence for a functional role in myelination. [PDF]

open access: yes, 1994
We have investigated the expression of integrins by rat oligodendroglia grown in primary culture and the functional role of these proteins in myelinogenesis.
Malek-Hedayat, S, Rome, LH
core  

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