Abstract：
:To elucidate the molecular details of the activation-associated clustering of epidermal growth factor receptors (EGFRs), the time course of the mobility and aggregation states of eGFP tagged EGFR in the membranes of Chinese hamster ovary (CHO) cells was assessed by in situ mobility assays. Fluorescence correlation spectroscopy (FCS) was used to probe molecular movements of small ensembles of molecules over short distances and time scales, and to report on the state of aggregation. The diffusion of larger ensembles of molecules over longer distances (and time scales) was investigated by fluorescence recovery after photobleaching (FRAP). Autocorrelation functions could be best fitted by a two-component diffusion model corrected for triplet formation and blinking. The slow, 100-1000 ms component was attributed to membrane localized receptors moving with free Brownian diffusion, whereas the fast, ms component was assigned to cytosolic receptors or their fragments. Upon stimulation with 50 nM EGF, a significant decrease from 0.11 to 0.07 μm2/s in the diffusion coefficient of membrane-localized receptors was observed, followed by recovery to the original value in ~20 min. In contrast, the apparent brightness of diffusing species remained the same. Stripe FRAP experiments yielded a decrease in long-range molecular mobility directly after stimulation, evidenced by an increase in the recovery time of the slow component from 13 to 21.9 s. Our observations are best explained by the transient attachment of ligand-bound EGFRs to immobile or slowly moving structures such as the cytoskeleton or large, previously photobleached receptor aggregates.
journal_name
Int J Mol Scijournal_title
International journal of molecular sciencesauthors
Vámosi G,Friedländer-Brock E,Ibrahim SM,Brock R,Szöllősi J,Vereb Gdoi
10.3390/ijms20133370subject
Has Abstractpub_date
2019-07-09 00:00:00issue
13issn
1422-0067pii
ijms20133370journal_volume
20pub_type
杂志文章abstract：:Neuropeptides such as vasoactive intestinal peptide (VIP) and calcitonin gene-related peptide (CGRP) are present in nerve fibers of bone tissues and have been suggested to potentially regulate bone remodeling. Oscillatory fluid flow (OFF)-induced shear stress is a potent signal in mechanotransduction that is capable o...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms15045874
更新日期：2014-04-08 00:00:00
abstract：:Both long-term undernutrition and overnutrition disturb metabolic balance, which is mediated partially by the action of two adipokines, leptin and resistin (RSTN). In this study, we manipulated the diet of ewes to produce either a thin (lean) or fat (fat) body condition and investigated how RSTN affects endocrine and ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21124238
更新日期：2020-06-14 00:00:00
abstract：:Placental homeostasis of tryptophan is essential for fetal development and programming. The two main metabolic pathways (serotonin and kynurenine) produce bioactive metabolites with immunosuppressive, neurotoxic, or neuroprotective properties and their concentrations in the fetoplacental unit must be tightly regulated...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21207578
更新日期：2020-10-14 00:00:00
abstract：:Harnessing melanins to scavenge free radicals in vivo may yield treatment methods for inflammatory disorders. Furthermore, elucidation of the mechanism underlying melanin-mediated suppression of free radicals, which is yet unclear, is warranted. Herein, we chemically synthesized melanin-mimetic nanoparticles (MeNPs) a...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms19082309
更新日期：2018-08-07 00:00:00
abstract：:The tumor microenvironment, which consists of fibroblasts, smooth muscle cells, endothelial cells, immune cells, epithelial cells, and extracellular matrices, plays a crucial role in tumor progression. Hepatic stellate cells (HSCs), a class of unique liver stromal cells, participate in immunomodulatory activities by i...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20205079
更新日期：2019-10-13 00:00:00
abstract：:Understanding the role of substituents is of great importance for the preparation of novel phenolic compounds with enhanced antioxidative properties. In this work, the antioxidative activity of isoflavonoid derivatives with different substituents placed at the C2 position was determined by density functional theory (D...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20020397
更新日期：2019-01-18 00:00:00
abstract：:Ovarian cancer is the seventh most commonly diagnosed cancer amongst women and has the highest mortality rate of all gynaecological malignancies. It is a heterogeneous disease attributed to one of three cell types found within the reproductive milieu: epithelial, stromal, and germ cell. Each histotype differs in etiol...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms20061466
更新日期：2019-03-22 00:00:00
abstract：:Nitrogen (N) is essential for plant growth and crop productivity. Organic N is a major form of remobilized N in plants' response to N limitation. It is necessary to understand the regulatory role of N limitation adaption (NLA) in organic N remobilization for this adaptive response. Transcriptional and proteomic analys...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21062171
更新日期：2020-03-21 00:00:00
abstract：:Carbonic anhydrase is a ubiquitous metalloenzyme that catalyzes the reversible interconversion of CO2/HCO3-. Equilibrium of these species is maintained by the action of carbonic anhydrase. Recent advances in magnetic resonance spectroscopy have allowed, for the first time, in vivo characterization of carbonic anhydras...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21072442
更新日期：2020-04-01 00:00:00
abstract：:Given their extremely small size and light weight, carbon nanotubes (CNTs) can be readily inhaled by human lungs resulting in increased rates of pulmonary disorders, particularly fibrosis. Although the fibrogenic potential of CNTs is well established, there is a lack of consensus regarding the contribution of physicoc...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms15057444
更新日期：2014-04-29 00:00:00
abstract：:Antibody drug conjugates (ADCs), consisting of a cancer-specific antibody and cytotoxic payload, are shown to be a potent class of anticancer therapeutics, with enhanced therapeutic efficacy and reduced "off-target" side effects. However, the therapeutic window of ADCs is narrowed by problems such as difficulty in sit...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21093286
更新日期：2020-05-06 00:00:00
abstract：:The success of antibody therapeutics is strongly influenced by their multifunctional nature that couples antigen recognition mediated by their variable regions with effector functions and half-life extension mediated by a subset of their constant regions. Nevertheless, the monospecific IgG format is not optimal for ma...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21207496
更新日期：2020-10-12 00:00:00
abstract：:Biologic scaffolds composed of extracellular matrix components have been proposed to repair and reconstruct a variety of tissues in clinical and pre-clinical studies. Injectable gels can fill and conform any three-dimensional shape and can be delivered to sites of interest by minimally invasive techniques. In this stu...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21228608
更新日期：2020-11-15 00:00:00
abstract：:The analysis of saliva as a diagnostic approach for systemic diseases was proposed just two decades ago, but recently great interest in the field has emerged because of its revolutionary potential as a liquid biopsy and its usefulness as a non-invasive sampling method. Multiple molecules isolated in saliva have been p...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms17091531
更新日期：2016-09-12 00:00:00
abstract：:The aim of this study was to evaluate the in cellulo inhibition of hydrogen-peroxide-induced oxidative stress in skin fibroblasts using different low-molecular-weight polysaccharides (LMPS) prepared from agar (LMAG), chitosan (LMCH) and starch (LMST), which contain various different functional groups (i.e., sulfate, a...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms141019399
更新日期：2013-09-25 00:00:00
abstract：:Cryopreservation of immature testicular tissue (ITT) prior to chemo/radiotherapy is now ethically accepted and is currently the only way to preserve fertility of prepubertal boys about to undergo cancer therapies. So far, three-dimensional culture of testicular cells isolated from prepubertal human testicular tissue w...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20215476
更新日期：2019-11-03 00:00:00
abstract：:The genetic diversity and population genetic structure of 252 accessions from 21 Prunus sibirica L. populations were investigated using 10 ISSR, SSR, and SRAP markers. The results suggest that the entire population has a relatively high level of genetic diversity, with populations HR and MY showing very high diversity...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms15010377
更新日期：2013-12-31 00:00:00
abstract：:Interstitial telomeric sequences (ITSs) are short stretches of telomeric-like repeats (TTAGGG)n at nonterminal chromosomal sites. We previously demonstrated that, in the genomes of primates and rodents, ITSs were inserted during the repair of DNA double-strand breaks. These conclusions were derived from sequence compa...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21082838
更新日期：2020-04-18 00:00:00
abstract：:A new aromaticity definition is advanced as the compactness formulation through the ratio between atoms-in-molecule and orbital molecular facets of the same chemical reactivity property around the pre- and post-bonding stabilization limit, respectively. Geometrical reactivity index of polarizability was assumed as pro...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms11041269
更新日期：2010-03-26 00:00:00
abstract：:Patients with advanced skeletal metastases arising from primary cancers including breast, lung, and prostate suffer from extreme pain, bone loss, and frequent fractures. While the importance of interactions between bone and tumors is well-established, our understanding of complex cell-cell and cell-microenvironment in...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21186913
更新日期：2020-09-21 00:00:00
abstract：:Due to the present scenario of climate change, plants have to evolve strategies to survive and perform under a plethora of biotic and abiotic stresses, which restrict plant productivity. Maintenance of plant protein functional conformation and preventing non-native proteins from aggregation, which leads to metabolic d...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms20215321
更新日期：2019-10-25 00:00:00
abstract：:The term "pharmacological chaperone" was introduced 20 years ago. Since then the approach with this type of drug has been proposed for several diseases, lysosomal storage disorders representing the most popular targets. The hallmark of a pharmacological chaperone is its ability to bind a protein specifically and stabi...
journal_title：International journal of molecular sciences
pub_type： 杂志文章,评审
doi：10.3390/ijms21020489
更新日期：2020-01-13 00:00:00
abstract：:The Kv4 family of voltage-gated K⁺ channels underlie the fast transient (A-type) outward K⁺ current. Although A-type currents are critical to determine somato-dendritic integration in central neurons, relatively little is known about the precise subcellular localisation of the underlying channels in hippocampal circui...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms20020246
更新日期：2019-01-09 00:00:00
abstract：:The role of dynamic processes on self-assembled structures of 4'-([2,2':6', 2''-terpyridin]-4'-yl)-[1,1'-biphenyl]-4-carboxylic acid (l) molecules on Au(III) has been studied by scanning tunneling microscopy. The as-deposited monolayer is closed-packed and periodic in a short-range due to dipole forces. A thermal anne...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms14035686
更新日期：2013-03-11 00:00:00
abstract：:Pterosins are abundant in ferns, and pterosin A was considered a novel activator of adenosine monophosphate-activated protein kinase, which is crucial for regulating blood glucose homeostasis. However, the distribution of pterosins in different species of ferns from various places in Taiwan is currently unclear. To ad...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms16022497
更新日期：2015-01-22 00:00:00
abstract：:Regorafenib eye drops were developed for treating age-related macular degeneration. This study aimed to investigate the effects of this multi-kinase inhibitor on intraocular pressure (IOP), bleb formation, and conjunctival changes in a canine filtration surgery model. Glaucoma filtration surgery models were created in...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21010063
更新日期：2019-12-20 00:00:00
abstract：:In 1993, the Ambros lab reported the cloning and developmental function of lin-4, the first microRNA [...]. ...
journal_title：International journal of molecular sciences
pub_type： 社论
doi：10.3390/ijms20081987
更新日期：2019-04-23 00:00:00
abstract：:The treatment of memory impairments associated with the central nervous system diseases remains an unmet medical need with social and economic implications. Here we show, that a multi-target ligand of aminergic G protein-coupled receptors with antipsychotic activity in vivo (D2AAK1) stimulates neuron growth and surviv...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms21228849
更新日期：2020-11-23 00:00:00
abstract：:Photodynamic therapy (PDT) of the thoracic cavity can be performed in conjunction with surgery to treat cancers of the lung and its pleura. However, illumination of the cavity results in tissue exposure to a broad range of fluence rates. In a murine model of intrathoracic PDT, we studied the efficacy of 2-(1-hexyloxye...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms17010101
更新日期：2016-01-14 00:00:00
abstract：PURPOSE:to evaluate the role of whole brain radiotherapy (WBRT) and radiation boost (RB) for 208 patients recursive partitioning analysis (RPA) II with 1 or 2 brain metastases (BM) at a single institution. METHODS AND MATERIALS:the dose of WBRT was 30 Gy (10 fractions of 3 Gy). One hundred thirty-two patients (63.5%) ...
journal_title：International journal of molecular sciences
pub_type： 杂志文章
doi：10.3390/ijms15057554
更新日期：2014-05-02 00:00:00
