Results 11 to 20 of about 23,322 (261)
An agent-based model of metabolic signaling oscillations in Bacillus subtilis biofilms. [PDF]
PLoS Computational BiologyMicrobes of nearly every species can form biofilms, communities of cells bound together by a self-produced matrix. It is not understood how variation at the cellular level impacts putatively beneficial, colony-level behaviors, such as cell-to-cell ...
Obadiah J Mulder +4 more
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Oscillations in a cAMP signalling model for cell aggregation – a geometric analysis [PDF]
Journal of Mathematical Analysis and Applications, 2020 In this article, the authors perform a geometric analysis of a singularly perturbed model for a cyclic adenosine monophosphate (cAMP) signalling system that controls aggregation of the amoeboid microorganism \textit{Dictyostelium discoideum} and which can be rewritten into the form of a planar system of ordinary differential equations with two small ...
Miao, Zhouqian +2 more
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Oscillations and temporal signalling in cells [PDF]
Physical Biology, 2007 The development of new techniques to quantitatively measure gene expression in cells has shed light on a number of systems that display oscillations in protein concentration. Here we review the different mechanisms which can produce oscillations in gene expression or protein concentration, using a framework of simple mathematical models.
G. Tiana +4 more
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Purinergic signalling is required for calcium oscillations in migratory chondrogenic progenitor cells [PDF]
Pflügers Archiv - European Journal of Physiology, 2014 Osteoarthritis (OA) is the most common form of chronic musculoskeletal disorders. A migratory stem cell population termed chondrogenic progenitor cells (CPC) with in vitro chondrogenic potential was previously isolated from OA cartilage. Since intracellular Ca(2+) signalling is an important regulator of chondrogenesis, we aimed to provide a detailed ...
Matta, C +8 more
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Visualization of Notch Signaling Oscillation in Cells and Tissues [PDF]
, 2014 The Notch signaling effectors Hes1 and Hes7 exhibit oscillatory expression with a period of about 2-3 h during embryogenesis. Hes1 oscillation is important for proliferation and differentiation of neural stem cells, whereas Hes7 oscillation regulates periodic formation of somites.
Shimojo, Hiromi +2 more
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An excitable signal integrator couples to an idling cytoskeletal oscillator to drive cell migration [PDF]
Nature Cell Biology, 2013 It is generally believed that cytoskeletal activities drive random cell migration, whereas signal transduction events initiated by receptors regulate the cytoskeleton to guide cells. However, we find that the cytoskeletal network, involving SCAR/WAVE, Arp 2/3 and actin-binding proteins, is capable of generating only rapid oscillations and undulations ...
Chuan-Hsiang Huang +4 more
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Heat Oscillations Driven by the Embryonic Cell Cycle Reveal the Energetic Costs of Signaling [PDF]
Developmental Cell, 2019 All living systems function out of equilibrium and exchange energy in the form of heat with their environment. Thus, heat flow can inform on the energetic costs of cellular processes, which are largely unknown. Here, we have repurposed an isothermal calorimeter to measure heat flow between developing zebrafish embryos and the surrounding medium.
Jonathan, Rodenfels +2 more
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Clofazimine inhibits human Kv1.3 potassium channel by perturbing calcium oscillation in T lymphocytes. [PDF]
PLoS ONE, 2008 The Kv1.3 potassium channel plays an essential role in effector memory T cells and has been implicated in several important autoimmune diseases including multiple sclerosis, psoriasis and type 1 diabetes.
Yunzhao R Ren +10 more
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Cellular Architecture Regulates Collective Calcium Signaling and Cell Contractility.
PLoS Computational Biology, 2016 A key feature of multicellular systems is the ability of cells to function collectively in response to external stimuli. However, the mechanisms of intercellular cell signaling and their functional implications in diverse vascular structures are poorly ...
Jian Sun +4 more
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Signaling Pathways Underlying Muscarinic Receptor-induced [Ca2+] Oscillations in HEK293 Cells [PDF]
Journal of Biological Chemistry, 2001 We have investigated the signaling pathways underlying muscarinic receptor-induced calcium oscillations in human embryonic kidney (HEK293) cells. Activation of muscarinic receptors with a maximal concentration of carbachol (100 microm) induced a biphasic rise in cytoplasmic calcium ([Ca2+]i) comprised of release of Ca2+ from intracellular stores and ...
D, Luo +3 more
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