Download or read book Controlled Presentation of Genetic Material Within Stem Cell Condensations for Regulation of Cell Behavior for Bone Tissue Engineering written by Alexandra McMillan and published by . This book was released on 2018 with total page 277 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is an exceedingly high demand for functional bone grafts worldwide. In the United States, more than half a million people receive treatment for bone defects annually [1]. Conventional tissue engineering approaches aim to regenerate damaged tissue by combining transplanted cells with bioactive factors and biomaterial scaffolds. Scaffold-free approaches, including self-assembled high-density cell aggregates, bypass the need for a scaffold to more closely mimic native bone development, with abundant cell-cell and cell-extracellular matrix (ECM) interactions. Importantly, mesenchymal stem cell (MSC) fate in these scaffold-free aggregates can be directed towards musculoskeletal lineages via presentation of bioactive factors. Gene delivery systems were developed to explore how localized and sustained delivery of genetic material from within MSC aggregates can regulate cell behavior for chondrogenic and osteogenic differentiation. MSC aggregates were incorporated with mineral-coated hydroxyapatite microparticles (MCMs) loaded with Lipofectamine-pDNA nanocomplexes for sustained presentation of localized transgenes. MCM-bound pDNA encoding TGF-ß1 (pTGF-ß1) and/or BMP-2 (pBMP-2) embedded in MSC condensations produced localized growth factor capable of driving MSC differentiation, with the aim of recapitulating endochondral ossification. In addition to the presentation of pDNA for upregulation of chondrogenic and osteogenic factors, a delivery platform for short-interfering RNA (siRNA) or microRNA (miRNA) was developed to downregulate inhibitors of differentiation. siRNA was complexed with endosmolytic micelle nanoparticles and incorporated within novel, photocrosslinkable dextran microspheres for sustained, tunable release of bioactive siRNA nanoparticles over 28 days. Effective cellular gene knockdown by microsphere-released siRNA was validated in 2D monolayer culture and 3D aggregates. Overall, this work demonstrates the capacity for localized gene therapy to guide MSC differentiation within scaffold-free constructs for application in the engineering of musculoskeletal tissue.
Download or read book Bone Tissue Engineering written by Jeffrey O. Hollinger and published by CRC Press. This book was released on 2004-10-14 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on bone biology, Bone Tissue Engineering integrates basic sciences with tissue engineering. It includes contributions from world-renowned researchers and clinicians who discuss key topics such as different models and approaches to bone tissue engineering, as well as exciting clinical applications for patients. Divided into four sections, t
Download or read book Spatially Controlled Multi phenotypic Differentiation of Stem Cells in 3D Via an Engineered Mechanical Gradient written by Christopher Bowman Horner and published by . This book was released on 2016 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research was to engineer a scaffold composed of a mechanical gradient and understand the effects of dynamic stimulation on the morphogenesis of the interfacial tissue via spatially controlled differentiation of a single stem cell source. Osteoarthritis is a degenerative joint disease affecting articular cartilage and the underlying subchondral bone resulting in severe pain and disability of the joints. While current clinical treatments provide limited efficacy in long-term success, tissue engineering strategies prove to be a viable option to address regeneration of the osteochondral gradient interface. To address this challenge spatial patterning of mechanical factors are essential for the development of a gradient tissue structure in three dimensions. Here, the overarching goal of this work was to examine (1) the preferential differentiation capacity of MSCs towards multi-phenotypic lineages when subjected to variations in compressive strain, (2) the control of micro- and macro-scale scaffold mechanics through utilizing a core-shell microfiber electrospinning technique, and finally (3) the engineering of a dynamic mechanical gradient that can spatially control the local strain that MSCs will sense and differentiate into multi-phenotypic lineages. My findings demonstrate that MSCs differentiate in a magnitude-dependent and phenotype-specific manner in response to different magnitudes of dynamic compressive strain suggesting that MSCs are mechano-responsive and their multi-phenotypic differentiation can be controlled by varying the strain regimens. Furthermore, it was demonstrated that the mechanical properties of core-shell electrospun fibers can be modulated by controlling the composition and the dimension of core, decoupled from the cell-interfacing surface chemistry. More importantly, it was shown that mechanical properties of such fibers/scaffolds at the micro- and macroscale can be independently regulated by modulating micro- and macro-structure. Finally, spatial control of the mechanical properties of individual core-shell fibers in a monolithic scaffold was able to modulate the preferential multi-phenotypic differentiation of MSCs when subjected to dynamic compressive strain. Thus, these findings provide an additional avenue for directing stem cell differentiation in lieu of biochemical cues commonly used for osteochondral tissue regeneration. Addressing the influence of mechanical stimulation on spatially controlled multi-phenotypic MSC differentiation is the basis behind the work presented in the following dissertation.
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 Mechanotransduction written by and published by Academic Press. This book was released on 2014-07-29 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Progress in Molecular Biology and Translational Science provides a forum for discussion of new discoveries, approaches, and ideas in molecular biology. It contains contributions from leaders in their fields and abundant references. Volume 126 features in-depth reviews that focus on the tools required to investigate mechanotransduction. Additional chapters focus on how we can use these tools to answer fundamental questions about the interaction of physical forces with cell biology, morphogenesis, and function of mature structures. Chapters in the volume are authored by a unique combination of cell biologists and engineers, providing a range of perspectives on mechanotransduction. Provides a unique combination of perspectives from biologists and engineers Engaging to people of many training backgrounds
Download or read book Stem Cells written by Ariff Bongso and published by World Scientific. This book was released on 2011 with total page 721 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stem cell biology has drawn tremendous interest in recent years as it promises cures for a variety of incurable diseases. This book deals with the basic and clinical aspects of stem cell research and involves work on the full spectrum of stem cells isolated today. It also covers the conversion of stem cell types into a variety of useful tissues which may be used in the future for transplantation therapy. It is thus aimed at undergraduates, postgraduates, scientists, embryologists, doctors, tissue engineers and anyone who wishes to gain some insight into stem cell biology. This book is important as it is comprehensive and covers all aspects of stem cell biology, from basic research to clinical applications. It will have 33 chapters written by renowned stem cell scientists worldwide. It will be up-to-date and all the chapters include self-explanatory figures, color photographs, graphics and tables. It will be easy to read and give the reader a complete understanding and state of the art of the exciting science and its applications.
Download or read book Cell Engineering and Regeneration written by Heinz Redl and published by Springer. This book was released on 2017-02-16 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference work presents the origins of cells for tissue engineering and regeneration, including primary cells, tissue-specific stem cells, pluripotent stem cells and trans-differentiated or reprogrammed cells. There is particular emphasis on current understanding of tissue regeneration based on embryology and evolution studies, including mechanisms of amphibian regeneration. The book covers the use of autologous versus allogeneic cell sources, as well as various procedures used for cell isolation and cell pre-conditioning , such as cell sorting, biochemical and biophysical pre-conditioning, transfection and aggregation. It also presents cell modulation using growth factors, molecular factors, epigenetic approaches, changes in biophysical environment, cellular co-culture and other elements of the cellular microenvironment. The pathways of cell delivery are discussed with respect to specific clinical situations, including delivery of ex vivo manipulated cells via local and systemic routes, as well as activation and migration of endogenous reservoirs of reparative cells. The volume concludes with an in-depth discussion of the tracking of cells in vivo and their various regenerative activities inside the body, including differentiation, new tissue formation and actions on other cells by direct cell-to-cell communication and by secretion of biomolecules.
Download or read book Injectable Biomaterials written by Brent Vernon and published by Elsevier. This book was released on 2011-01-24 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel injectable materials for non-invasive surgical procedures are becoming increasingly popular. An advantage of these materials include easy deliverability into the body, however the suitability of their mechanical properties must also be carefully considered. Injectable biomaterials covers the materials, properties and biomedical applications of injectable materials, as well as novel developments in the technology.Part one focuses on materials and properties, with chapters covering the design of injectable biomaterials as well as their rheological properties and the mechanical properties of injectable polymers and composites. Part two covers the clinical applications of injectable biomaterials, including chapters on drug delivery, tissue engineering and orthopaedic applications as well as injectable materials for gene delivery systems. In part three, existing and developing technologies are discussed. Chapters in this part cover such topics as environmentally responsive biomaterials, injectable nanotechnology, injectable biodegradable materials and biocompatibility. There are also chapters focusing on troubleshooting and potential future applications of injectable biomaterials.With its distinguished editor and international team of contributors, Injectable biomaterials is a standard reference for materials scientists and researchers working in the biomaterials industry, as well as those with an academic interest in the subject. It will also be beneficial to clinicians. Comprehensively examines the materials, properties and biomedical applications of injectable materials, as well as novel developments in the technology Reviews the design of injectable biomaterials as well as their rheological properties and the mechanical properties of injectable polymers and composites Explores clinical applications of injectable biomaterials, including drug delivery, tissue engineering, orthopaedic applications and injectable materials for gene delivery systems
Download or read book In Situ Tissue Regeneration written by Sang Jin Lee and published by Academic Press. This book was released on 2016-07-17 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: In Situ Tissue Regeneration: Host Cell Recruitment and Biomaterial Design explores the body’s ability to mobilize endogenous stem cells to the site of injury and details the latest strategies developed for inducing and supporting the body’s own regenerating capacity. From the perspective of regenerative medicine and tissue engineering, this book describes the mechanism of host cell recruitment, cell sourcing, cellular and molecular roles in cell differentiation, navigational cues and niche signals, and a tissue-specific smart biomaterial system that can be applied to a wide range of therapies. The work is divided into four sections to provide a thorough overview and helpful hints for future discoveries: endogenous cell sources; biochemical and physical cues; smart biomaterial development; and applications. Explores the body’s ability to mobilize endogenous stem cells to the site of injury Details the latest strategies developed for inducing and supporting the body’s own regenerating capacity Presents smart biomaterials in cell-based tissue engineering applications—from the cell level to applications—in the first unified volume Features chapter authors and editors who are authorities in this emerging field Prioritizes a discussion of the future direction of smart biomaterials for in situ tissue regeneration, which will affect an emerging and lucrative industry
Download or read book Intestinal Stem Cell Niche written by and published by Academic Press. This book was released on 2018-04-24 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advances in Stem Cells and Their Niches addresses stem cells during development, homeostasis, and disease/injury of the respective organs, presenting new developments in the field, including new data on disease and clinical applications. Video content illustrates such areas as protocols, transplantation techniques, and work with mice. Explores not only reviews of research, but also shares methods, protocols, and transplantation techniques Contains video content to illustrate such areas as protocols, transplantation techniques, and work with mice Each volume concentrates on one organ, making this a unique publication
Download or read book Fundamentals of Tissue Engineering and Regenerative Medicine written by Ulrich Meyer and published by Springer Science & Business Media. This book was released on 2009-02-11 with total page 1049 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Fundamentals of Tissue Engineering and Regenerative Medicine" provides a complete overview of the state of the art in tissue engineering and regenerative medicine. Tissue engineering has grown tremendously during the past decade. Advances in genetic medicine and stem cell technology have significantly improved the potential to influence cell and tissue performance, and have recently expanded the field towards regenerative medicine. In recent years a number of approaches have been used routinely in daily clinical practice, others have been introduced in clinical studies, and multitudes are in the preclinical testing phase. Because of these developments, there is a need to provide comprehensive and detailed information for researchers and clinicians on this rapidly expanding field. This book offers, in a single volume, the prerequisites of a comprehensive understanding of tissue engineering and regenerative medicine. The book is conceptualized according to a didactic approach (general aspects: social, economic, and ethical considerations; basic biological aspects of regenerative medicine: stem cell medicine, biomolecules, genetic engineering; classic methods of tissue engineering: cell, tissue, organ culture; biotechnological issues: scaffolds; bioreactors, laboratory work; and an extended medical discipline oriented approach: review of clinical use in the various medical specialties). The content of the book, written in 68 chapters by the world’s leading research and clinical specialists in their discipline, represents therefore the recent intellect, experience, and state of this bio-medical field.
Download or read book Advanced Techniques in Bone Regeneration written by Alessandro Rozim Zorzi and published by BoD – Books on Demand. This book was released on 2016-08-31 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced Techniques in Bone Regeneration is a book that brings together over 15 chapters, written by leading practitioners and researchers, of the latest advances in the area, including surgical techniques, new discoveries, and promising methods involving biomaterials and tissue engineering. This book is intended for all who work in the treatment of disorders involving problems with the regeneration of bone tissue, are doctors or dentists, as well as are researchers and teachers involved in this exciting field of scientific knowledge.
Download or read book Transcriptional and Translational Regulation of Stem Cells written by Gary Hime and published by Springer Science & Business Media. This book was released on 2013-05-22 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes the latest findings on transcriptional and translational regulation of stem cells. Both transcriptional activators and repressors have been shown to be crucial for the maintenance of the stem cell state. A key element of stem cell maintenance is repression of differentiation factors or developmental genes – achieved transcriptionally, epigenetically by the Polycomb complex, and post-transcriptionally by RNA-binding proteins and microRNAs. This volume takes two approaches to this topic – (1) illustrating the general principles outlined above through a series of different stem cell examples – embryonic, iPS and adult stem cells, and (2) describing several molecular families that have been shown to have roles in regulation of multiple stem cell populations.
Download or read book Stem Cell Engineering written by Gerhard M. Artmann and published by Springer Science & Business Media. This book was released on 2010-10-29 with total page 566 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential of stem cells for healing and disease prevention in all fields of medicine is tremendous and has revolutionized the high-tech biomedical research. In this book, many of the most prominent researchers discuss the challenging topics of stem cell engineering, for example: Ethical issues of stem cell research; technological challenges, stem cell growth and differentiation, therapeutic applications, bioreactors and bioprocesses, high throughput and microfluidic screening platforms, stem cell identification and sorting, intercellular signaling and engineered niches, novel approaches for embryonic and adult stem cell growth and differentiation, stem cells and drug discovery, screening platforms. Stem Cell Engineering offers valuable background and reference for both the public and professionals including industrial staffers, faculty, researchers, engineers, students and scientific journalists.
Download or read book The Cell Biology of Stem Cells written by Eran Meshorer and published by Springer Science & Business Media. This book was released on 2011-01-11 with total page 246 pages. Available in PDF, EPUB and Kindle. Book excerpt: Stem cells have been gaining a lot of attention in recent years. Their unique potential to self-renew and differentiate has turned them into an attractive model for the study of basic biological questions such as cell division, replication, transcription, cell fate decisions, and more. With embryonic stem (ES) cells that can generate each cell type in the mammalian body and adult stem cells that are able to give rise to the cells within a given lineage, basic questions at different developmental stages can be addressed. Importantly, both adult and embryonic stem cells provide an excellent tool for cell therapy, making stem cell research ever more pertinent to regenerative medicine. As the title The Cell Biology of Stem Cells suggests, our book deals with multiple aspects of stem cell biology, ranging from their basic molecular characteristics to the in vivo stem cell trafficking of adult stem cells and the adult stem-cell niche, and ends with a visit to regeneration and cell fate reprogramming. In the first chapter, “Early embryonic cell fate decisions in the mouse”, Amy Ralson and Yojiro Yamanaka describe the mechanisms that support early developmental decisions in the mouse pre-implantation embryo and the current understanding of the source of the most immature stem cell types, which includes ES cells, trophoblast stem (TS) cells and extraembryonic endoderm stem (XEN) cells.
Download or read book Stem Cells in Aesthetic Procedures written by Melvin A. Shiffman and published by Springer. This book was released on 2014-07-21 with total page 815 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in the use of stem cells in aesthetic procedures has been increasing rapidly, reflecting the widespread acknowledgment of the tremendous potential of stem cell fat transfer. This is, however, the first book to be devoted entirely to the subject. The book opens by reviewing the history of the development of pluripotent stem cells and the results of research into the biochemistry and physiology of stem cells. Adipose tissue anatomy and survival are discussed and the wide range of aesthetic procedures involving stem cell fat transfer are then described in detail. These procedures relate to the face, breast, buttocks, legs, hands, penis and Poland syndrome. In addition, potential risks and complications are identified. The book has been written by leading experts and will be an invaluable source of information for students, beginners and experienced surgeons in a range of specialties.
Download or read book The Growth Plate written by Irving M. Shapiro and published by IOS Press. This book was released on 2002 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evidence generated by a number of genetic studies indicates that growth is regulated by a number of genes and that interference with their expression can have catastrophic effects on the well being of the whole organism. This work covers skeletal development and growth.
