Download or read book Extracellular Matrix Mechanics and Implications for Cellular Mechanosensing written by and published by . This book was released on 2016 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Heterogeneity in Ecm and Its Effect on Cell Mechanosensing written by Maria Proestaki and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The extracellular matrix (ECM) provides structural support to tissues, while exerting biochemical and mechanical signals to resident cells. Such mechanical signals, the most familiar being matrix stiffness, regulate cell morphology, differentiation, migration, proliferation and gene expression. Therefore, studying the mechanical properties of the extracellular matrix is crucial to understanding cell behavior. With collagen type I being the most abundant protein found in mammalian tissues, prior works have studied its mechanical properties at the macroscale and reported a strong deviation from linear elasticity, exhibiting strain stiffening and compression weakening behavior. However, to better understand cell-matrix interactions more information about the matrix at the length scale of a cell is needed. Here we design an experimental method to quantify matrix stiffness at the length scale of a cell while accounting for matrix nonlinearity. We use spherical particles made of an active hydrogel that contract when heated, mimicking cell contraction. Results showed that the matrix stiffness is highly heterogeneous at the length scale of a cell, with values ranging by a factor of 3. Next, we examine the effect of matrix heterogeneity in structure on cell ability to sense other stiffer inclusions in the matrix, such as ducts, tumors or regions of abnormally high stiffness. Using a combination of experiments and modeling, we determine the extent to which matrix heterogeneity disrupts cell sensing of a locally stiff feature in the matrix. We found that the propagation of mechanical cues through the matrix depends on length scale, with single cells able to sense only the stiffness of the nearby fibers and multicellular structures, such as tumors, also sensing the stiffness of distant matrix features. Lastly, another matrix component, hyaluronic acid, is incorporated in our experiments to test its effect on fibrous collagen mechanics at the length scale of a cell. The addition of hyaluronic acid was found to make displacements in fibrous collagen to decay faster with distance from localized loads, closer to linear elasticity prediction, indicating a more linear matrix behavior with less compression softening. Also, collagen-hyaluronic acid matrices decrease the ability of fibrous collagen to hold permanent displacements, creating a more elastic matrix. By applying these findings to study matrix remodeling due to localized forces, we found that hyaluronic acid partially--but not fully--inhibited matrix remodeling. These results are evidence that there must be another mechanism for mechanical remodeling, which provides new experimental evidence supporting prior working showing that mechanical remodeling can be described by a phase transition associated with instability caused by compression softening. Overall, the findings of this thesis highlight the importance of length scale when trying to understand cell-matrix interactions. Small changes in local matrix structure can result in different behavior of neighboring cells, highlighting the importance of local matrix mechanics in understanding cell behavior in normal or diseased tissues.
Download or read book Mechanosensing and Mechanochemical Transduction in Extracellular Matrix written by Frederick H. Silver and published by Springer Science & Business Media. This book was released on 2006-11-24 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the only single authored text on biological polymers available for bioengineering and biomedical engineering students. The book describes the structure of polymers and how these molecules are put together to make the tissues of the body and also their role in surgical implants and in structural diseases. It provides essential reading for biomedical engineers, biologists, physicians, health care professionals and other biomedical researchers who are interested in understanding how physical forces affect the biology, physiology and pathophysiology of humans. The author is an expert on the effect of mechanical forces on extracellular matrix.
Download or read book Collagen written by Peter Fratzl and published by Springer Science & Business Media. This book was released on 2008-05-10 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Not only does this book provide a comprehensive review of current research advances in collagen structure and mechanics, it also explores this biological macromolecule’s many applications in biomaterials and tissue engineering. Readers gain an understanding of the structure and mechanical behavior of type I collagen and collagen-based tissues in vertebrates across all length scales, from the molecular (nano) to the organ (macro) level.
Download or read book Cell and Matrix Mechanics written by Roland Kaunas and published by CRC Press. This book was released on 2014-10-23 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores a Range of Multiscale Biomechanics/Mechanobiology Concepts Cell and Matrix Mechanics presents cutting-edge research at the molecular, cellular, and tissue levels in the field of cell mechanics. This book involves key experts in the field, and covers crucial areas of cell and tissue mechanics, with an emphasis on the roles of mechanical forces in cell–matrix interactions. Providing material in each chapter that builds on the previous chapters, it effectively integrates length scales and contains, for each length scale, key experimental observations and corresponding quantitative theoretical models. Summarizes the Three Hierarchical Levels of Cell Mechanics The book contains 14 chapters and is organized into three sections. The first section focuses on the molecular level, the second section details mechanics at the cellular level, and the third section explores cellular mechanics at the tissue level. The authors offer a thorough description of the roles of mechanical forces in cell and tissue biology, and include specific examples. They incorporate descriptions of associated theoretical models, and provide the data and modeling framework needed for a multi-scale analysis. In addition, they highlight the pioneering studies in cell–matrix mechanics by Albert K. Harris. The topics covered include: The passive and active mechanical properties of cytoskeletal polymers and associated motor proteins along with the behavior of polymer networks The mechanical properties of the cell membrane, with an emphasis on membrane protein activation caused by membrane forces The hierarchical organization of collagen fibrils, revealing that a delicate balance exists between specific and nonspecific interactions to result in a structure with semicrystalline order as well as loose associations The roles of matrix mechanical properties on cell adhesion and function along with different mechanical mechanisms of cell–cell interactions The effects of mechanical loading on cell cytoskeletal remodeling, summarizing various modeling approaches that explain possible mechanisms regulating the alignment of actin stress fibers in response to stretching The mechanical testing of cell-populated collagen matrices, along with theory relating the passive and active mechanical properties of the engineered tissues Cell migration behavior in 3-D matrices and in collective cell motility The role of mechanics in cartilage development The roles of both cellular and external forces on tissue morphogenesis The roles of mechanical forces on tumor growth and cancer metastasis Cell and Matrix Mechanics succinctly and systematically explains the roles of mechanical forces in cell–matrix biology. Practitioners and researchers in engineering and physics, as well as graduate students in biomedical engineering and mechanical engineering related to mechanobiology, can benefit from this work.
Download or read book Mechanobiology in Health and Disease written by Stefaan Verbruggen and published by Academic Press. This book was released on 2018-08-09 with total page 527 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanobiology in Health and Disease brings together contributions from leading biologists, clinicians, physicists and engineers in one convenient volume, providing a unified source of information for researchers in this highly multidisciplinary area. Opening chapters provide essential background information on cell mechanotransduction and essential mechanobiology methods and techniques. Other sections focus on the study of mechanobiology in healthy systems, including bone, tendons, muscles, blood vessels, the heart and the skin, as well as mechanobiology studies of pregnancy. Final chapters address the nascent area of mechanobiology in disease, from the study of bone conditions, skin diseases and heart diseases to cancer. A discussion of future perspectives for research completes each chapter in the volume. This is a timely resource for both early-career and established researchers working on mechanobiology. Provides an essential digest of primary research from many fields and disciplines in one convenient volume Covers both experimental approaches and descriptions of mechanobiology problems from mathematical and numerical perspectives Addresses the hot topic of mechanobiology in disease, a particularly dynamic field of frontier science
Download or read book Multi scale Extracellular Matrix Mechanics and Mechanobiology written by Yanhang Zhang and published by . This book was released on 2020 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the current state of knowledge in the field of multi-scale ECM mechanics and mechanobiology with a focus on experimental and modelling studies in biomechanical characterization, advanced optical microscopy and imaging, as well as computational modeling. This book also discusses the scale dependency of ECM mechanics, translation of mechanical forces from tissue to cellular level, and advances and challenges in improving our understanding of cellular mechanotransduction in the context of living tissues and organisms.
Download or read book The Extracellular Matrix an Overview written by Robert Mecham and published by Springer Science & Business Media. This book was released on 2011-02-16 with total page 429 pages. Available in PDF, EPUB and Kindle. Book excerpt: Knowledge of the extracellular matrix (ECM) is essential to understand cellular differentiation, tissue development, and tissue remodeling. This volume of the series “Biology of Extracellular Matrix” provides a timely overview of the structure, regulation, and function of the major macromolecules that make up the extracellular matrix. It covers topics such as collagen types and assembly of collagen-containing suprastructures, basement membrane, fibronectin and other cell-adhesive glycoproteins, proteoglycans, microfibrils, elastin, fibulins and matricellular proteins, such as thrombospondin. It also explores the concept that ECM components together with their cell surface receptors can be viewed as intricate nano-devices that allow cells to physically organize their 3-D-environment. Further, the role of the ECM in human disease and pathogenesis is discussed as well as the use of model organisms in elucidating ECM function.
Download or read book Molecular and Cellular Mechanobiology written by Shu Chien and published by Springer. This book was released on 2016-08-10 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will cover the cutting-edge developments in molecular and cellular mechanobiology to date. Readers will have a clear understanding of mechanobiology at the molecular and cellular levels, encompassing the mechanosensors, transducers, and transcription. An integrative approach across different scales from molecular sensing to mechanotransduction and gene modulation for physiological regulation of cellular functions will be explored, as well as applications to pathophysiological states in disease. A comprehensive understanding of the roles of physicochemical microenvironment and intracellular responses in determining cellular function in health and disease will also be discussed.
Download or read book Extracellular Matrix Mechanics Regulate Cell Signaling and Migratory Potential in Cancer written by Jaya Srivastava and published by . This book was released on 2012 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of the presented research is to examine the relationship between the cellular microenvironment and biochemical response of metastatic cells. Clinically recognized as a trait of cancer progression, the cellular microenvironment can have variable and distinct mechanical properties that are processed via cellular mechanosensing, resulting in a cellular biochemical response. A range of studies investigating the interactions between the cellular micromechanical environment and the cell's molecular response during disease progression have been made, yet remain absent of quantitative characterization of many of these coordinated responses. The fundamental inquiry that drives the following research attempts to elucidate how a cell perceives the physical microenvironment and converts that signal to a biochemical response. With the goal of providing insight to such responses, the presented research seeks to elucidate the following questions: (1) What are the integrated effects of ECM stiffness, ECM architecture, and breast cancer cell metastatic potential on cell migration? (2) How does endogenous tissue transglutaminase (tTG) cross-linking of the ECM scaffold effect ECM mechanical properties? (3) How does the architecture and stiffness of the extracellular matrix (ECM) effect the systems-level cellular migration and signaling response? (4) What are the integrated effects of ECM architecture and the targeted knockdown of integrin [beta]1 and MT1-MMP on cellular metastatic potential? The presented research utilizes an interdisciplinary approach, integrating experimental mechanics, biochemical analysis, cellular biology techniques, covalent chemistry, and various microscopy techniques, to investigate these events. In short, cancerous cells are cultured atop or within synthetic collagen type I ECMs of varying mechanical stiffness and structure. These cells are subsequently analyzed by molecular analysis and immunoassays, including quantitative PCR, Western blotting, and gelatin zymography, to acquire measures of the cellular response to perturbations of micromechanical environment. Time-lapse microscopy experiments and subsequent image analyses enable observations of cellular migratory potential through synthetic ECMs. Results indicate that cooperative synergy between ECM properties, cell-matrix adhesion, and pericellular proteolysis drive cell migratory potential of highly invasive tumorigenic cell populations. Collectively, these findings contribute to the cancer biology and mechanobiology fields by systematically extending current insights of matrix mechanics, cellular signaling, and cellular migratory potential in cancer.
Download or read book Multi scale Extracellular Matrix Mechanics and Mechanobiology written by Yanhang Zhang and published by Springer. This book was released on 2019-07-12 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the current state of knowledge in the field of multi-scale ECM mechanics and mechanobiology with a focus on experimental and modelling studies in biomechanical characterization, advanced optical microscopy and imaging, as well as computational modeling. This book also discusses the scale dependency of ECM mechanics, translation of mechanical forces from tissue to cellular level, and advances and challenges in improving our understanding of cellular mechanotransduction in the context of living tissues and organisms.
Download or read book Mechanobiology of Cell Cell and Cell Matrix Interactions written by A. Wagoner Johnson and published by Springer Science & Business Media. This book was released on 2011-02-21 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mechanobiology of Cell-Matrix Interactions focuses on characterization and modeling of interactions between cells and their local extracellular environment, exploring how these interactions may mediate cell behavior. Studies of cell-matrix interactions rely on integrating engineering, (molecular and cellular) biology, and imaging disciplines. Recent advances in the field have begun to unravel our understanding of how cells gather information from their surrounding environment, and how they interrogate such information during the cell fate decision making process. Topics include adhesive and integrin-ligand interactions; extracellular influences on cell biology and behavior; cooperative mechanisms of cell-cell and cell-matrix interactions; the mechanobiology of pathological processes; (multi-scale) modeling approaches to describe the complexity or cell-matrix interactions; and quantitative methods required for such experimental and modeling studies.
Download or read book Extracellular Matrix written by W.D. Comper and published by CRC Press. This book was released on 1996-06-30 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt: Looking at the area of the extracellular matrix of connective tissue, including the results and concepts which have recently been generated, this text describes the structural characteristics of extracellular molecules and discusses the interaction between the cell and the extracellular matrix.
Download or read book Cell Mechanics and Cellular Engineering written by Van C. Mow and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cell mechanics and cellular engineering may be defined as the application of principles and methods of engineering and life sciences toward fundamental understanding of structure-function relationships in normal and pathological cells and the development of biological substitutes to restore cellular functions. This definition is derived from one developed for tissue engineering at a 1988 NSF workshop. The reader of this volume will see the definition being applied and stretched to study cell and tissue structure-function relationships. The best way to define a field is really to let the investigators describe their areas of study. Perhaps cell mechanics could be compartmentalized by remembering how some of the earliest thinkers wrote about the effects of mechanics on growth. As early as 1638, Galileo hypothesized that gravity and of living mechanical forces place limits on the growth and architecture organisms. It seems only fitting that Robert Hooke, who gave us Hooke's law of elasticity, also gave us the word "cell" in his 1665 text, Micrographid, to designate these elementary entities of life. Julius Wolffs 1899 treatise on the function and form of the trabecular architecture provided an incisive example of the relationship between the structure of the body and the mechanical load it bears. In 1917, D' Arcy Thompson's On Growth and Form revolutionized the analysis of biological processes by introducing cogent physical explanations of the relationships between the structure and function of cells and organisms.
Download or read book Cellular Mechanotransduction written by Mohammad R. K. Mofrad and published by Cambridge University Press. This book was released on 2014-07-31 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Mechanotransduction" is the term for the ability, first described by 19th-century anatomist Julius Wolff, of living tissues to sense mechanical stress and respond by tissue remodeling. More recently, the scope of mechanotransduction has been expanded to include the sensation of stress, its translation into a biochemical signal, and the sequence of biological responses it produces. This book looks at mechanotransduction in a more restricted sense, focusing on the process of stress sensing and transducing a mechanical force into a cascade of biochemical signals. This stress has become increasingly recognized as one of the primary and essential factors controlling biological functions, ultimately affecting the function of the cells, tissues, and organs. A primary goal of this broad book is also to help define the new field of mechanomics, which attempts to describe the complete mechanical state of a biological system.
Download or read book Mechanosensitivity and Mechanotransduction written by Irina Kiseleva and published by Springer Science & Business Media. This book was released on 2010-11-18 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest findings in the field of research of mechanosensitivity and mechanotransduction in different cells and tissues. Mechanosensitivity and mechanotransduction of the heart and vascular cells, in the lung, in bone and joint tissues, in sensor systems and in blood cells are described in detail. This Volume focuses on molecular mechanisms of mechanosensitivity and mechanotransduction via cytoskeleton. Integrin-mediated mechanotransduction, the role of actin cytoskeleton and the role of other cytoskeletal elements are discussed. It contains a detailed description of several stretch-induced signaling cascades with multiple levels of crosstalk between different pathways. It contains a description of the role of nitric oxide in regulation of cardiac activity and in regulation of mechanically gated channels in the heart. In the heart mechanical signals are propagated into the intracellular space primarily via integrin-linked complexes, and are subsequently transmitted from cell to cell via paracrine signaling. Biochemical signals derived from mechanical stimuli activate both acute phosphorylation of signaling cascades, such as in the PI3K, FAK, and ILK pathways, and long-term morphological modii cations via intracellular cytoskeletal reorganization and extracellular matrix remodelling. Cellular and molecular effects of mechanical stretch on vascular cells are also discussed. This Volume highlights the role of mechanotransduction in the lung, in bone and joint tissues. For the first time mechanosensitivity and mechanotransduction in blood cells are discussed. It contains new insights into mechanosensitive K+ channels functioning in mouse B lymphocytes. This book is a unique collection of reviews outlining current knowledge and future developments in this rapidly growing field. Currently, investigations of the molecular mechanisms of mechanosensitivity and mechanotransduction are focused on several issues. The majority of studies investigate intracellular signaling pathways. Knowledge of the mechanisms which underlie these processes is necessary for understanding of the normal functioning of different organs and tissues and allows to predict changes, which arise due to alterations of their environment. Possibly such knowledge will allow the development of new methods of artificial intervention and therapies. This book brings up the problem closer to the experts in related medical and biological sciences as well as practicing doctors besides just presenting the latest achievements in the field.
Download or read book Mechanosensitivity and Mechanotransduction written by Irina Kiseleva and published by Springer. This book was released on 2013-01-02 with total page 371 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest findings in the field of research of mechanosensitivity and mechanotransduction in different cells and tissues. Mechanosensitivity and mechanotransduction of the heart and vascular cells, in the lung, in bone and joint tissues, in sensor systems and in blood cells are described in detail. This Volume focuses on molecular mechanisms of mechanosensitivity and mechanotransduction via cytoskeleton. Integrin-mediated mechanotransduction, the role of actin cytoskeleton and the role of other cytoskeletal elements are discussed. It contains a detailed description of several stretch-induced signaling cascades with multiple levels of crosstalk between different pathways. It contains a description of the role of nitric oxide in regulation of cardiac activity and in regulation of mechanically gated channels in the heart. In the heart mechanical signals are propagated into the intracellular space primarily via integrin-linked complexes, and are subsequently transmitted from cell to cell via paracrine signaling. Biochemical signals derived from mechanical stimuli activate both acute phosphorylation of signaling cascades, such as in the PI3K, FAK, and ILK pathways, and long-term morphological modii cations via intracellular cytoskeletal reorganization and extracellular matrix remodelling. Cellular and molecular effects of mechanical stretch on vascular cells are also discussed. This Volume highlights the role of mechanotransduction in the lung, in bone and joint tissues. For the first time mechanosensitivity and mechanotransduction in blood cells are discussed. It contains new insights into mechanosensitive K+ channels functioning in mouse B lymphocytes. This book is a unique collection of reviews outlining current knowledge and future developments in this rapidly growing field. Currently, investigations of the molecular mechanisms of mechanosensitivity and mechanotransduction are focused on several issues. The majority of studies investigate intracellular signaling pathways. Knowledge of the mechanisms which underlie these processes is necessary for understanding of the normal functioning of different organs and tissues and allows to predict changes, which arise due to alterations of their environment. Possibly such knowledge will allow the development of new methods of artificial intervention and therapies. This book brings up the problem closer to the experts in related medical and biological sciences as well as practicing doctors besides just presenting the latest achievements in the field.
