keyword
MENU ▼
Read by QxMD icon Read
search

Myosin II

keyword
https://www.readbyqxmd.com/read/27899900/fiber-type-specific-satellite-cell-content-in-cyclists-following-heavy-training-with-carbohydrate-and-carbohydrate-protein-supplementation
#1
Alec I McKenzie, Andrew C D'Lugos, Michael J Saunders, Keith D Gworek, Nicholas D Luden
The central purpose of this study was to evaluate the fiber type-specific satellite cell and myonuclear responses of endurance-trained cyclists to a block of intensified training, when supplementing with carbohydrate (CHO) vs. carbohydrate-protein (PRO). In a crossover design, endurance-trained cyclists (n = 8) performed two consecutive training periods, once supplementing with CHO (de facto "control" condition) and the other with PRO. Each training period consisted of 10 days of intensified cycle training (ICT-120% increase in average training duration) followed by 10 days of recovery (RVT-reduced volume training; 33% volume reduction vs...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27897407/activin-a-induces-skeletal-muscle-catabolism-via-p38%C3%AE-mitogen-activated-protein-kinase
#2
Hui Ding, Guohua Zhang, Ka Wai Thomas Sin, Zhelong Liu, Ren-Kuo Lin, Min Li, Yi-Ping Li
BACKGROUND: Activation of type IIB activin receptor (ActRIIB) in skeletal muscle leads to muscle atrophy because of increased muscle protein degradation. However, the intracellular signalling mechanism that mediates ActRIIB-activated muscle catabolism is poorly defined. METHODS: We investigated the role of p38β mitogen-activated protein kinases (MAPK) in mediating ActRIIB ligand activin A-activated muscle catabolic pathways in C2C12 myotubes and in mice with perturbation of this kinase pharmacologically and genetically...
September 16, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27897402/the-impact-of-ageing-physical-activity-and-pre-frailty-on-skeletal-muscle-phenotype-mitochondrial-content-and-intramyocellular-lipids-in-men
#3
Félix St-Jean-Pelletier, Charlotte H Pion, Jean-Philippe Leduc-Gaudet, Nicolas Sgarioto, Igor Zovilé, Sébastien Barbat-Artigas, Olivier Reynaud, Feras Alkaterji, François C Lemieux, Alexis Grenon, Pierrette Gaudreau, Russell T Hepple, Stéphanie Chevalier, Marc Belanger, José A Morais, Mylène Aubertin-Leheudre, Gilles Gouspillou
BACKGROUND: The exact impact of ageing on skeletal muscle phenotype and mitochondrial and lipid content remains controversial, probably because physical activity, which greatly influences muscle physiology, is rarely accounted for. The present study was therefore designed to investigate the effects of ageing, physical activity, and pre-frailty on skeletal muscle phenotype, and mitochondrial and intramyocellular lipid content in men. METHODS: Recreationally active young adult (20-30 yo; YA); active (ACT) and sedentary (SED) middle-age (50-65 yo; MA-ACT and MA-SED); and older (65 + yo; 65 + ACT and 65 + SED) and pre-frail older (65 + PF) men were recruited...
September 2, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27895991/intracellular-dynamics-measurements-with-full-field-optical-coherence-tomography-suggest-hindering-effect-of-actomyosin-contractility-on-organelle-transport
#4
Charles-Edouard Leroux, Fabien Bertillot, Olivier Thouvenin, Albert-Claude Boccara
Intracellular motion can be quantitatively monitored in tissues using coherence-gated microscopic techniques. With full-field optical coherence tomography (FFOCT), the use of high numerical aperture microscope objectives provides a high resolution mapping of intracellular dynamics that are probed with subwavelength sensitivity. In the upper temporal bandwidth that we have used (1-6 Hz) the main contribution to the dynamic signal arises from the overall dynamical, optically heterogeneous cytoplasm. We propose a method to specifically study the impact of actomyosin contractility on the intracellular dynamic signal by performing high throughput, comparative measurements of multicellular aggregates with and without blebbistatin action, a selective inhibitor of class-II myosins that disrupts actomyosin contractile activity...
November 1, 2016: Biomedical Optics Express
https://www.readbyqxmd.com/read/27893051/study-of-cholesterol-repletion-effect-on-nanomechanical-properties-of-human-umbilical-vein-endothelial-cell-via-rapid-broadband-atomic-force-microscopy
#5
Bo Yan, Juan Ren, Yue Liu, Huarong Huang, Xi Zheng, Qingze Zou
Abnormalities of blood cholesterol concentration are associated with increased risks for vascular disease, especially heart attacks and strokes. As one of the main lipid components of plasma membrane in mammalian cells, cholesterol has a major impact on the mechanical properties of endothelial cells. Although the effect of cholesterol depletion on cell mechanical properties has been studied, no results yet have been reported on quantitative investigation of cholesterol repletion effect. In this study, cholesterol repletion effect on nanomechanical properties of human umbilical vein endothelial cell (EA...
November 18, 2016: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/27882344/slit2-robo2-signaling-pathway-inhibits-nonmuscle-myosin-iia-activity-and-destabilizes-kidney-podocyte-adhesion
#6
Xueping Fan, Hongying Yang, Sudhir Kumar, Kathleen E Tumelty, Anna Pisarek-Horowitz, Hila Milo Rasouly, Richa Sharma, Stefanie Chan, Edyta Tyminski, Michael Shamashkin, Mostafa Belghasem, Joel M Henderson, Anthony J Coyle, David J Salant, Stephen P Berasi, Weining Lu
The repulsive guidance cue SLIT2 and its receptor ROBO2 are required for kidney development and podocyte foot process structure, but the SLIT2/ROBO2 signaling mechanism regulating podocyte function is not known. Here we report that a potentially novel signaling pathway consisting of SLIT/ROBO Rho GTPase activating protein 1 (SRGAP1) and nonmuscle myosin IIA (NMIIA) regulates podocyte adhesion downstream of ROBO2. We found that the myosin II regulatory light chain (MRLC), a subunit of NMIIA, interacts directly with SRGAP1 and forms a complex with ROBO2/SRGAP1/NMIIA in the presence of SLIT2...
November 17, 2016: JCI Insight
https://www.readbyqxmd.com/read/27877086/ginsenoside-rg1-protects-against-oxidative-stress-induced-neuronal-apoptosis-through-myosin-iia-actin-related-cytoskeletal-reorganization
#7
Yan Wang, Qian Liu, Yingqiong Xu, Yuanyuan Zhang, Yanni Lv, Yisha Tan, Nan Jiang, Guosheng Cao, Xiaonan Ma, Jingrong Wang, Zhengyu Cao, Boyang Yu, Junping Kou
Oxidative stress-induced cytoskeletal dysfunction of neurons has been implicated as a crucial cause of cell apoptosis or death in the central nervous system (CNS) diseases, such as neurodegenerative and psychiatric diseases. The application of neuroprotectants rescuing the neurons from cytoskeletal damage and apoptosis can be a potential treatment for these CNS diseases. Ginsenoside Rg1 (Rg1), one of the major active components of ginseng, has been reported possessing notable neuroprotective activities. However, there is rare report about its effect on cytoskeleton and its undergoing mechanism...
2016: International Journal of Biological Sciences
https://www.readbyqxmd.com/read/27875276/cancer-cells-become-less-deformable-and-more-invasive-with-activation-of-%C3%AE-adrenergic-signaling
#8
Tae-Hyung Kim, Navjot Kaur Gill, Kendra D Nyberg, Angelyn V Nguyen, Sophia V Hohlbauch, Nicholas A Geisse, Cameron J Nowell, Erica K Sloan, Amy C Rowat
Invasion by cancer cells is a critical step in metastasis. An oversimplified view in the literature is that cancer cells become more deformable as they become more invasive. β-adrenergic receptor (βAR) signaling drives invasion and metastasis, but the effects on cell deformability are not known. Here we show that activation of β-adrenergic signaling by βAR agonists reduces the deformability of highly metastatic human breast cancer cells, and that these stiffer cells are more invasive in vitro We find that βAR activation also reduces the deformability of ovarian, prostate, melanoma, and leukemia cells...
November 14, 2016: Journal of Cell Science
https://www.readbyqxmd.com/read/27872252/integrin-mediated-mechanotransduction
#9
REVIEW
Zhiqi Sun, Shengzhen S Guo, Reinhard Fässler
Cells can detect and react to the biophysical properties of the extracellular environment through integrin-based adhesion sites and adapt to the extracellular milieu in a process called mechanotransduction. At these adhesion sites, integrins connect the extracellular matrix (ECM) with the F-actin cytoskeleton and transduce mechanical forces generated by the actin retrograde flow and myosin II to the ECM through mechanosensitive focal adhesion proteins that are collectively termed the "molecular clutch." The transmission of forces across integrin-based adhesions establishes a mechanical reciprocity between the viscoelasticity of the ECM and the cellular tension...
November 21, 2016: Journal of Cell Biology
https://www.readbyqxmd.com/read/27869798/gluten-induced-symptoms-in-diarrhea-predominant-irritable-bowel-syndrome-are-associated-with-increased-myosin-light-chain-kinase-activity-and-claudin-15-expression
#10
Richard L Wu, Maria I Vazquez-Roque, Paula Carlson, Duane Burton, Madhusudan Grover, Michael Camilleri, Jerrold R Turner
The mechanisms underlying diarrhea-predominant irritable bowel syndrome (IBS-D) are poorly understood, but increased intestinal permeability is thought to contribute to symptoms. A recent clinical trial of gluten-free diet (GFD) demonstrated symptomatic improvement, relative to gluten-containing diet (GCD), which was associated with reduced intestinal permeability in non-celiac disease IBS-D patients. The aim of this study was to characterize intestinal epithelial tight junction composition in IBS-D before and after dietary gluten challenge...
November 21, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27855159/myosin-phosphatase-fine-tunes-zebrafish-motoneuron-position-during-axonogenesis
#11
Juliane Bremer, Michael Granato
During embryogenesis the spinal cord shifts position along the anterior-posterior axis relative to adjacent tissues. How motor neurons whose cell bodies are located in the spinal cord while their axons reside in adjacent tissues compensate for such tissue shift is not well understood. Using live cell imaging in zebrafish, we show that as motor axons exit from the spinal cord and extend through extracellular matrix produced by adjacent notochord cells, these cells shift several cell diameters caudally. Despite this pronounced shift, individual motoneuron cell bodies stay aligned with their extending axons...
November 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27851943/antagonistic-behaviors-of-nmy-1-and-nmy-2-maintain-ring-channels-in-the-c-%C3%A2-elegans-gonad
#12
Valerie C Coffman, Torah M Kachur, David B Pilgrim, Adriana T Dawes
Contractile rings play critical roles in a number of biological processes, including oogenesis, wound healing, and cytokinesis. In many cases, the activity of motor proteins such as nonmuscle myosins is required for appropriate constriction of these contractile rings. In the gonad of the nematode worm Caenorhabditis elegans, ring channels are a specialized form of contractile ring that are maintained at a constant diameter before oogenesis. We propose a model of ring channel maintenance that explicitly incorporates force generation by motor proteins that can act normally or tangentially to the ring channel opening...
November 15, 2016: Biophysical Journal
https://www.readbyqxmd.com/read/27845380/integrins-outside-focal-adhesions-transmit-tensions-during-stable-cell-adhesion
#13
Yongliang Wang, Xuefeng Wang
Integrins coupled with other proteins form protein complexes named focal adhesions (FA) which are considered as the primary sites for cellular forces transduction during cell stable adhesion. Cell traction forces transmitted by FAs and integrin tensions inside FAs have been extensively studied. However, it remains unknown whether integrins outside FAs can transmit tension, and if so, what is the tension range. We previously developed a tension sensor named tension gauge tether (TGT). To calibrate integrin tensions outside FAs, here we applied multiplex TGT (mTGT) to simultaneously monitor integrin tensions at separate levels...
November 15, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27825967/a-novel-splice-variant-of-supervillin-sv5-promotes-carcinoma-cell-proliferation-and-cell-migration
#14
Xueran Chen, Haoran Yang, Shangrong Zhang, Zhen Wang, Fang Ye, Chaozhao Liang, Hongzhi Wang, Zhiyou Fang
Supervillin is an actin-associated protein that regulates actin dynamics by interacting with Myosin II, F-actin, and Cortactin to promote cell contractility and cell motility. Two splicing variants of human Supervillin (SV1 and SV4) have been reported in non-muscle cells; SV1 lacks 3 exons present in the larger isoform SV4. SV2, also called archvillin, is present in striated muscle; SV3, also called smooth muscle archvillin or SmAV, was cloned from smooth muscle. In the present study, we identify a novel splicing variant of Supervillin (SV5)...
November 5, 2016: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27821783/correction-biphasic-targeting-and-cleavage-furrow-ingression-directed-by-the-tail-of-a-myosin-ii
#15
Xiaodong Fang, Jianying Luo, Ryuichi Nishihama, Carsten Wloka, Christopher Dravis, Mirko Travaglia, Masayuki Iwase, Elizabeth A Vallen, Erfei Bi
No abstract text is available yet for this article.
November 7, 2016: Journal of Cell Biology
https://www.readbyqxmd.com/read/27799472/empower-multiplex-cell-and-tissue-specific-crispr-mediated-gene-manipulation-with-self-cleaving-ribozymes-and-trna
#16
Li Xu, Lixia Zhao, Yandi Gao, Jing Xu, Renzhi Han
Clustered regularly interspaced short palindromic repeat/Cas9 (CRISPR/Cas9) system has emerged in recent years as a highly efficient RNA-guided gene manipulation platform. Simultaneous editing or transcriptional activation/suppression of different genes becomes feasible with the co-delivery of multiple guide RNAs (gRNAs). Here, we report that multiple gRNAs linked with self-cleaving ribozymes and/or tRNA could be simultaneously expressed from a single U6 promoter to exert genome editing of dystrophin and myosin binding protein C3 in human and mouse cells...
October 30, 2016: Nucleic Acids Research
https://www.readbyqxmd.com/read/27799367/formin-generated-actomyosin-arcs-propel-t-cell-receptor-microcluster-movement-at-the-immune-synapse
#17
Sricharan Murugesan, Jinsung Hong, Jason Yi, Dong Li, Jordan R Beach, Lin Shao, John Meinhardt, Grey Madison, Xufeng Wu, Eric Betzig, John A Hammer
Actin assembly and inward flow in the plane of the immunological synapse (IS) drives the centralization of T cell receptor microclusters (TCR MCs) and the integrin leukocyte functional antigen 1 (LFA-1). Using structured-illumination microscopy (SIM), we show that actin arcs populating the medial, lamella-like region of the IS arise from linear actin filaments generated by one or more formins present at the IS distal edge. After traversing the outer, Arp2/3-generated, lamellipodia-like region of the IS, these linear filaments are organized by myosin II into antiparallel concentric arcs...
November 7, 2016: Journal of Cell Biology
https://www.readbyqxmd.com/read/27798640/altered-expression-of-human-smooth-muscle-myosin-phosphatase-targeting-mypt-isovariants-with-pregnancy-and-labor
#18
Jon Lartey, Julie Taggart, Stephen Robson, Michael Taggart
BACKGROUND: Myosin light-chain phosphatase is a trimeric protein that hydrolyses phosphorylated myosin II light chains (MYLII) to cause relaxation in smooth muscle cells including those of the uterus. A major component of the phosphatase is the myosin targeting subunit (MYPT), which directs a catalytic subunit to dephosphorylate MYLII. There are 5 main MYPT family members (MYPT1 (PPP1R12A), MYPT2 (PPP1R12B), MYPT3 (PPP1R16A), myosin binding subunit 85 MBS85 (PPP1R12C) and TIMAP (TGF-beta-inhibited membrane-associated protein (PPP1R16B))...
2016: PloS One
https://www.readbyqxmd.com/read/27796324/myocyte-specific-enhancer-factor-2c-a-novel-target-gene-of-mir-214-3p-in-suppressing-angiotensin-ii-induced-cardiomyocyte-hypertrophy
#19
Chun-Mei Tang, Fang-Zhou Liu, Jie-Ning Zhu, Yong-Heng Fu, Qiu-Xiong Lin, Chun-Yu Deng, Zhi-Qin Hu, Hui Yang, Xi-Long Zheng, Jian-Ding Cheng, Shu-Lin Wu, Zhi-Xin Shan
The role of microRNA-214-3p (miR-214-3p) in cardiac hypertrophy was not well illustrated. The present study aimed to investigate the expression and potential target of miR-214-3p in angiotensin II (Ang-II)-induced mouse cardiac hypertrophy. In mice with either Ang-II infusion or transverse aortic constriction (TAC) model, miR-214-3p expression was markedly decreased in the hypertrophic myocardium. Down-regulation of miR-214-3p was observed in the myocardium of patients with cardiac hypertrophy. Expression of miR-214-3p was upregulated in Ang-II-induced hypertrophic neonatal mouse ventricular cardiomyocytes...
October 31, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27789589/comprehensive-proteomic-analysis-of-developing-protein-bodies-in-maize-zea-mays-endosperm-provides-novel-insights-into-its-biogenesis
#20
Guifeng Wang, Gang Wang, Jiajia Wang, Yulong Du, Dongsheng Yao, Bilian Shuai, Liang Han, Yuanping Tang, Rentao Song
Prolamins, the major cereal seed storage proteins, are sequestered and accumulated in the lumen of the endoplasmic reticulum (ER), and are directly assembled into protein bodies (PBs). The content and composition of prolamins are the key determinants for protein quality and texture-related traits of the grain. Concomitantly, the PB-inducing fusion system provides an efficient target to produce therapeutic and industrial products in plants. However, the proteome of the native PB and the detailed mechanisms underlying its formation still need to be determined...
October 27, 2016: Journal of Experimental Botany
keyword
keyword
106532
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"