keyword
MENU ▼
Read by QxMD icon Read
search

mechanotransduction

keyword
https://www.readbyqxmd.com/read/29331806/unifying-in%C3%A2-vitro-and-in%C3%A2-vivo-ivt-mrna-expression-discrepancies-in-skeletal-muscle-via-mechanotransduction
#1
Sushma M Bhosle, Kristin H Loomis, Jonathan L Kirschman, Emmeline L Blanchard, Daryll A Vanover, Chiara Zurla, Damien Habrant, Darin Edwards, Patrick Baumhof, Bruno Pitard, Philip J Santangelo
The translational efficiency of an in vitro transcribed (IVT) mRNA was measured upon delivery to primary skeletal muscle cells and to a mouse model system, towards the development of a predictive in vitro assay for the screening and validation of intramuscular mRNA-based vaccines. When IVT mRNA was delivered either naked or complexed with novel aminoglycoside-based delivery vehicles, significant differences in protein expression in vitro and in vivo were observed. We hypothesized that this previously anticipated discrepancy was due to differences in the mechanism of IVT mRNA endosomal entry and release following delivery...
January 6, 2018: Biomaterials
https://www.readbyqxmd.com/read/29330322/cutting-edge-piezo1-mechanosensors-optimize-human-t-cell-activation
#2
Chinky Shiu Chen Liu, Deblina Raychaudhuri, Barnali Paul, Yogaditya Chakrabarty, Amrit Raj Ghosh, Oindrila Rahaman, Arindam Talukdar, Dipyaman Ganguly
TCRs recognize peptides on MHC molecules and induce downstream signaling, leading to activation and clonal expansion. In addition to the strength of the interaction of TCRs with peptides on MHC molecules, mechanical forces contribute to optimal T cell activation, as reflected by the superior efficiency of immobilized TCR-cross-linking Abs compared with soluble Abs in TCR triggering, although a dedicated mechanotransduction module is not identified. We found that the professional mechanosensor protein Piezo1 is critically involved in human T cell activation...
January 12, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29325214/a-spike-in-mechanotransductive-adenosine-triphosphate-release-from-red-blood-cells-in-microfluidic-constrictions-only-occurs-with-rare-donors
#3
J E Mancuso, W D Ristenpart
OBJECTIVE: Wan et al. (2008) demonstrated that RBCs rapidly and transiently release a spike of 300% more ATP shortly downstream from a short microfluidic constriction where the cells experience a sudden increase in shear stress. More recent work by Cinar et al. (2015), however, yielded no evidence for a similar spike in ATP release downstream of the constriction. Our aim was to determine if a transient spike in mechanotransduction is the typical response of red blood cells to the sudden onset of increased shear...
January 11, 2018: Microcirculation: the Official Journal of the Microcirculatory Society, Inc
https://www.readbyqxmd.com/read/29310802/the-role-of-age-related-intimal-remodeling-and-stiffening-in-atherosclerosis
#4
Jacob A VanderBurgh, Cynthia A Reinhart-King
Age-related vascular stiffening is closely associated with cardiovascular risk. The clinical measure of arterial stiffness, pulse wave velocity, reflects bulk structural changes in the media observed with age, but does not reflect intimal remodeling that also drives atherosclerosis. Endothelial barrier integrity is disrupted during early atherogenesis and is regulated by the mechanics and composition of the underlying intima, which undergoes significant atherogenic remodeling in response to age and hemodynamics...
2018: Advances in Pharmacology
https://www.readbyqxmd.com/read/29310798/mechanotransduction-in-blood-and-lymphatic-vascular-development-and-disease
#5
Sofia Urner, Molly Kelly-Goss, Shayn M Peirce, Eckhard Lammert
The blood and lymphatic vasculatures are hierarchical networks of vessels, which constantly transport fluids and, therefore, are exposed to a variety of mechanical forces. Considering the role of mechanotransduction is key for fully understanding how these vascular systems develop, function, and how vascular pathologies evolve. During embryonic development, for example, initiation of blood flow is essential for early vascular remodeling, and increased interstitial fluid pressure as well as initiation of lymph flow is needed for proper development and maturation of the lymphatic vasculature...
2018: Advances in Pharmacology
https://www.readbyqxmd.com/read/29310791/matrilins
#6
Mats Paulsson, Raimund Wagener
Marilins mediate interactions between macromolecular components of the extracellular matrix, e.g., collagens and proteoglycans. They are composed of von Willebrand factor type A and epidermal growth factor-like domains and the subunits oligomerize via coiled-coil domains. Matrilin-1 and -3 are abundant in hyaline cartilage, whereas matrilin-2 and -4 are widespread but less abundant. Mutations in matrilin genes have been linked to chondrodysplasias and osteoarthritis and recently characterization of matrilin-deficient mice revealed novel functions in mechanotransduction, regeneration, or inflammation...
2018: Methods in Cell Biology
https://www.readbyqxmd.com/read/29304430/-force-from-lipids-gating-of-mechanosensitive-channels-modulated-by-pufas
#7
Pietro Ridone, Stephan L Grage, Amrutha Patkunarajah, Andrew R Battle, Anne S Ulrich, Boris Martinac
The level of fatty acid saturation in phospholipids is a crucial determinant of the biophysical properties of the lipid bilayer. Integral membrane proteins are sensitive to changes of their bilayer environment such that their activities and localization can be profoundly affected. When incorporated into phospholipids of mammalian cells, poly-unsaturated fatty acids (PUFAs) determine the mechanical properties of the bilayer thereby affecting several membrane-associated functions such as endo- and exo-cytosis and ion channel/membrane receptor signalling cascades...
December 28, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29304315/osteocytogenesis-roles-of-physicochemical-factors-collagen-cleavage-and-exogenous-molecules
#8
Xuening Chen, Lichen Wang, Kaitao Zhao, Hongjun Wang
Osteocytes, the most abundant cell type in mammalian bone, are generally considered as the terminally differentiated cells of osteoblasts that are progressively self-buried or passively embedded in bone matrix. Emerging evidence reveals the essential functions of osteocytes in bone homeostasis and mechanotransduction. However, our knowledge on osteocytes, especially their formation, remains scarce. In this regard, the current review mainly focuses on several key factors that drive the osteocytic differentiation of osteoblasts, that is, osteocytogenesis...
January 5, 2018: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/29295709/differential-regulations-of-fibronectin-and-laminin-in-smad2-activation-in-vascular-endothelial-cells-in-response-to-disturbed-flow
#9
Tung-Lin Yang, Pei-Ling Lee, Ding-Yu Lee, Wei-Li Wang, Shu-Yi Wei, Chih-I Lee, Jeng-Jiann Chiu
BACKGROUND: Atherosclerosis occurs in arterial curvatures and branches, where the flow is disturbed with low and oscillatory shear stress (OSS). The remodeling and alterations of extracellular matrices (ECMs) and their composition is the critical step in atherogenesis. In this study, we investigated the effects of different ECM proteins on the regulation of mechanotransduction in vascular endothelial cells (ECs) in response to OSS. METHODS: Through the experiments ranging from in vitro cell culture studies on effects of OSS on molecular signaling to in vivo examinations on clinical specimens from patients with coronary artery disease (CAD), we elucidated the roles of integrins and different ECMs, i...
January 2, 2018: Journal of Biomedical Science
https://www.readbyqxmd.com/read/29290931/polycystins-and-mechanotransduction-in-bone
#10
EDITORIAL
Antonios N Gargalionis, Efthimia K Basdra, Athanasios G Papavassiliou
No abstract text is available yet for this article.
December 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/29282315/dynamics-and-mechanisms-of-intracellular-calcium-waves-elicited-by-tandem-bubble-induced-jetting-flow
#11
Fenfang Li, Chen Yang, Fang Yuan, Defei Liao, Thomas Li, Farshid Guilak, Pei Zhong
One of the earliest events in cellular mechanotransduction is often an increase in intracellular calcium concentration associated with intracellular calcium waves (ICWs) in various physiologic or pathophysiologic processes. Although cavitation-induced calcium responses are believed to be important for modulating downstream bioeffects such as cell injury and mechanotransduction in ultrasound therapy, the fundamental mechanisms of these responses have not been elucidated. In this study, we investigated mechanistically the ICWs elicited in single HeLa cells by the tandem bubble-induced jetting flow in a microfluidic system...
December 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29276759/in-vivo-multiscale-and-spatially-dependent-biomechanics-reveals-differential-strain-transfer-hierarchy-in-skeletal-muscle
#12
Soham Ghosh, James G Cimino, Adrienne K Scott, Frederick W Damen, Evan H Phillips, Alexander I Veress, Corey P Neu, Craig J Goergen
Biological tissues have a complex hierarchical architecture that spans organ to subcellular scales and comprises interconnected biophysical and biochemical machinery. Mechanotransduction, gene regulation, gene protection, and structure-function relationships in tissues depend on how force and strain are modulated from macro to micro scales, and vice versa. Traditionally, computational and experimental techniques have been used in common model systems (e.g., embryos) and simple strain measures were applied. But the hierarchical transfer of mechanical parameters like strain in mammalian systems is largely unexplored in vivo...
November 13, 2017: ACS Biomaterials Science & Engineering
https://www.readbyqxmd.com/read/29261728/using-thermal-scanning-assays-to-test-protein-protein-interactions-of-inner-ear-cadherins
#13
Deepanshu Choudhary, Anusha Kumar, Thomas J Magliery, Marcos Sotomayor
Protein-protein interactions play a crucial role in biological processes such as cell-cell adhesion, immune system-pathogen interactions, and sensory perception. Understanding the structural determinants of protein-protein complex formation and obtaining quantitative estimates of their dissociation constant (KD) are essential for the study of these interactions and for the discovery of new therapeutics. At the same time, it is equally important to characterize protein-protein interactions in a high-throughput fashion...
2017: PloS One
https://www.readbyqxmd.com/read/29248194/novel-image-analysis-methods-for-quantification-of-in-situ-3-d-tendon-cell-and-matrix-strain
#14
Ashley K Fung, J J Paredes, Nelly Andarawis-Puri
Macroscopic tendon loads modulate the cellular microenvironment leading to biological outcomes such as degeneration or repair. Previous studies have shown that damage accumulation and the phases of tendon healing are marked by significant changes in the extracellular matrix, but it remains unknown how mechanical forces of the extracellular matrix are translated to mechanotransduction pathways that ultimately drive the biological response. Our overarching hypothesis is that the unique relationship between extracellular matrix strain and cell deformation will dictate biological outcomes, prompting the need for quantitative methods to characterize the local strain environment...
December 6, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29242553/nuclear-lamin-a-c-harnesses-the-perinuclear-apical-actin-cables-to-protect-nuclear-morphology
#15
Jeong-Ki Kim, Arghavan Louhghalam, Geonhui Lee, Benjamin W Schafer, Denis Wirtz, Dong-Hwee Kim
The distinct spatial architecture of the apical actin cables (or actin cap) facilitates rapid biophysical signaling between extracellular mechanical stimuli and intracellular responses, including nuclear shaping, cytoskeletal remodeling, and the mechanotransduction of external forces into biochemical signals. These functions are abrogated in lamin A/C-deficient mouse embryonic fibroblasts that recapitulate the defective nuclear organization of laminopathies, featuring disruption of the actin cap. However, how nuclear lamin A/C mediates the ability of the actin cap to regulate nuclear morphology remains unclear...
December 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/29237825/mitochondrial-ca2-transport-in-the-endothelium-regulation-by-ions-redox-signalling-and-mechanical-forces
#16
REVIEW
B Rita Alevriadou, Santhanam Shanmughapriya, Akshar Patel, Peter B Stathopulos, Muniswamy Madesh
Calcium (Ca2+) transport by mitochondria is an important component of the cell Ca2+ homeostasis machinery in metazoans. Ca2+ uptake by mitochondria is a major determinant of bioenergetics and cell fate. Mitochondrial Ca2+ uptake occurs via the mitochondrial Ca2+ uniporter (MCU) complex, an inner mitochondrial membrane protein assembly consisting of the MCU Ca2+ channel, as its core component, and the MCU complex regulatory/auxiliary proteins. In this review, we summarize the current knowledge on the molecular nature of the MCU complex and its regulation by intra- and extramitochondrial levels of divalent ions and reactive oxygen species (ROS)...
December 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29224376/regulation-of-follicle-growth-through-hormonal-factors-and-mechanical-cues-mediated-by-hippo-signaling-pathway
#17
Ikko Kawashima, Kazuhiro Kawamura
The ovary is an interesting organ that shows major structural changes within a short period of time during each reproductive cycle. Follicle development is controlled by local paracrine and systemic endocrine factors. Many hormonal and molecular analyses have been conducted to find the mechanisms underlying structural changes in ovaries, However, exact mechanisms still remain to be determined. Recent development of mechanobiology facilitates the understanding on the contribution of physical forces and changes in the mechanical properties of cells and tissues to physiology and pathophysiology...
December 9, 2017: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/29222344/trip6-inhibits-hippo-signaling-in-response-to-tension-at-adherens-junctions
#18
Shubham Dutta, Sebastian Mana-Capelli, Murugan Paramasivam, Ishani Dasgupta, Heather Cirka, Kris Billiar, Dannel McCollum
The transcriptional co-activator YAP controls cell proliferation, survival, and tissue regeneration in response to changes in the mechanical environment. It is not known how mechanical stimuli such as tension are sensed and how the signal is transduced to control YAP activity. Here, we show that the LIM domain protein TRIP6 acts as part of a mechanotransduction pathway at adherens junctions to promote YAP activity by inhibiting the LATS1/2 kinases. Previous studies showed that vinculin at adherens junctions becomes activated by mechanical tension...
December 8, 2017: EMBO Reports
https://www.readbyqxmd.com/read/29222138/application-of-large-scale-aptamer-based-proteomic-profiling-to-planned-myocardial-infarctions
#19
Jaison Jacob, Debby Ngo, Nancy Finkel, Rebecca Pitts, Scott Gleim, Mark D Benson, Michelle J Keyes, Laurie A Farrell, Thomas Morgan, Lori L Jennings, Robert Gerszten
Background -Emerging proteomic technologies using novel affinity-based reagents allow for efficient multiplexing with high sample throughput. To identify early biomarkers of myocardial injury, we recently applied an aptamer-based proteomic profiling platform that measures 1,129 proteins to samples from patients undergoing septal alcohol ablation for hypertrophic cardiomyopathy, a human model of "planned myocardial injury" (PMI). Here we examined the scalability of this approach using a markedly expanded platform to study a far broader range of human proteins in the context of myocardial injury...
December 8, 2017: Circulation
https://www.readbyqxmd.com/read/29217640/lipid-bilayer-mediates-ion-channel-cooperativity-in-a-model-of-hair-cell-mechanotransduction
#20
Francesco Gianoli, Thomas Risler, Andrei S Kozlov
Mechanoelectrical transduction in the inner ear is a biophysical process underlying the senses of hearing and balance. The key players involved in this process are mechanosensitive ion channels. They are located in the stereocilia of hair cells and opened by the tension in specialized molecular springs, the tip links, connecting adjacent stereocilia. When channels open, the tip links relax, reducing the hair-bundle stiffness. This gating compliance makes hair cells especially sensitive to small stimuli. The classical explanation for the gating compliance is that the conformational rearrangement of a single channel directly shortens the tip link...
December 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
keyword
keyword
25325
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"