Results 81 to 90 of about 15,034,981 (403)
Hysteresis and bi-stability by an interplay of calcium oscillations and action potential firing
, 2006 Many cell types exhibit oscillatory activity, such as repetitive action potential firing due to the Hodgkin-Huxley dynamics of ion channels in the cell membrane or reveal intracellular inositol triphosphate (IP$_3$) mediated calcium oscillations (CaOs ...
A. P. R. Theuvenet +9 more
core +1 more source
Membrane Ultrastructure and T Cell Activation [PDF]
Frontiers in Immunology, 2018 The immune system serves as a crucial line of defense from infection and cancer, while also contributing to tissue homeostasis. Communication between immune cells is mediated by small soluble factors called cytokines, and also by direct cellular interactions. Cell-cell interactions are particularly important for T cell activation.
Johannes Pettmann +4 more
openaire +4 more sources
Autophagy in cancer and protein conformational disorders
FEBS Letters, EarlyView.Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley +1 more source
Nature Communications, 2018 Ciliogenesis is negatively regulated by the CP110-CEP97 complex, although the mechanism controlling mother centriole localization is poorly understood. Here, Huang et al.
Ning Huang +6 more
doaj +1 more source
Receptor-mediated targeting of magnetic nanoparticles using insulin as a surface ligand to prevent endocytosis [PDF]
, 2003 Superparamagnetic iron oxide nanoparticles have been used for many years as magnetic resonance imaging contrast agents or in drug delivery applications.
Berry, C.C. +3 more
core +1 more source
FEBS Letters, EarlyView.The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang +2 more
wiley +1 more source
Cytokinetic abscission requires actin-dependent microtubule severing
Nature CommunicationsCell division is completed by the abscission of the intercellular bridge connecting the daughter cells. Abscission requires the polymerization of an ESCRT-III cone close to the midbody to both recruit the microtubule severing enzyme spastin and scission ...
Tamara Advedissian +2 more
doaj +1 more source
Inhibition by Commercial Aminoglycosides of Human Connexin Hemichannels Expressed in Bacteria
Molecules, 2017 In addition to gap junctional channels that mediate cell-to-cell communication, connexins form hemichannels that are present at the plasma membrane. Since hemichannels are permeable to small hydrophilic compounds, including metabolites and signaling ...
Mariana C. Fiori +4 more
doaj +1 more source
Ruthenium polypyridyl peptide conjugates: membrane permeable probes for cellular imaging [PDF]
, 2008 Two novel polyarginine labelled ruthenium polypyridyl dyes are reported, one conjugated to five, (Ru-Ahx-R5), and one to eight arginine residues, (Ru-Ahx-R8). Both complexes exhibit long-lived, intense, and oxygen sensitive luminescence.
Amoroso +32 more
core +1 more source
A stepwise emergence of evolution in the RNA world
FEBS Letters, EarlyView.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source