Download or read book X ray Micro and Nano diffraction Imaging on Human Mesenchymal Stem Cells and Differentiated Cells written by Marten Bernhardt and published by . This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent advances in hard x-ray optics, instrumentation and detection have made it possible to probe biological samples by combining diffraction with raster scanning, using step sizes on the order of cellular organelle dimensions and below. The data obtained from such experiments encode the local electron density in a 2D-diffraction pattern for each scan position and provide information down to molecular scales. In this way, scanning transmission x-ray microscopy (with full diffraction data) complements very well the repertoire of high resolution imaging techniques. However, the challenge is ...

Download or read book Nanoscale Photonic Imaging written by Tim Salditt and published by Springer Nature. This book was released on 2020-06-09 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book, edited and authored by a team of world-leading researchers, provides a broad overview of advanced photonic methods for nanoscale visualization, as well as describing a range of fascinating in-depth studies. Introductory chapters cover the most relevant physics and basic methods that young researchers need to master in order to work effectively in the field of nanoscale photonic imaging, from physical first principles, to instrumentation, to mathematical foundations of imaging and data analysis. Subsequent chapters demonstrate how these cutting edge methods are applied to a variety of systems, including complex fluids and biomolecular systems, for visualizing their structure and dynamics, in space and on timescales extending over many orders of magnitude down to the femtosecond range. Progress in nanoscale photonic imaging in Göttingen has been the sum total of more than a decade of work by a wide range of scientists and mathematicians across disciplines, working together in a vibrant collaboration of a kind rarely matched. This volume presents the highlights of their research achievements and serves as a record of the unique and remarkable constellation of contributors, as well as looking ahead at the future prospects in this field. It will serve not only as a useful reference for experienced researchers but also as a valuable point of entry for newcomers.

Download or read book Investigating Cellular Nanoscale with X rays written by Clément Hémonnot and published by Göttingen University Press. This book was released on 2016 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The advances and technical improvements of X-ray imaging techniques, taking advantage of X-ray focussing optics and high intensity synchrotron sources, nowadays allow for the use of X-rays to probe the cellular nanoscale. Importantly, X-rays permit thick samples to be imaged without sectioning or slicing. In this work, two macromolecules, namely keratin intermediate filament (IF) proteins and DNA, both essential components of cells, were studied by X-ray techniques. Keratin IF proteins make up an integral part of the cytoskeleton of epithelial cells and form a dense intracellular network of bundles. This network is built from monomers in a hierarchical fashion. Thus, the keratin structure formation spans a large range of length scales from a few nanometres (monomers) to micrometres (networks). Here, keratin was studied at three different scales: i) filaments, ii) bundles and iii) networks. Solution small-angle X-ray scattering revealed distinct structural and organisational characteristics of these highly charged polyelectrolyte filaments, such as increasing radius with increasing salt concentration and spatial accumulation of ions depending on the salt concentration. The results are quantified by employing advanced modelling of keratin IFs by a core cylinder fl anked with Gaussian chains. Scanning micro- diffraction was used to study keratin at the bundle scale. Very different morphologies of keratin bundles were observed at different salt conditions. At the network scale, new imaging approaches and analyses were applied to the study of whole cells. Ptychography and scanning X-ray nano-diffraction imaging were performed on the same cells, allowing for high resolution in real and reciprocal space, thereby revealing the internal structure of these networks. By using a fitting routine based on simulations of IFs packed on a hexagonal lattice, the radius of each fi lament and distance between fi laments were retrieved. In mammalian cells, each nucleus contains 2 nm-thick DNA double helices with a total length of about 2 m. The DNA strands are packed in a highly hierarchical manner into individual chromosomes. DNA was studied in intact cells by visible light microscopy and scanning X-ray nano-diffraction, unveiling the compaction und decompaction of DNA during the cell cycle. Thus, we obtained information on the aggregation state of the nuclear DNA at a real space resolution on the order of few hundreds nm. To exploit to the reciprocal space information, individual diffraction patterns were analysed according to a generalised Porod’s law at a resolution down to 10 nm. We were able to distinguish nucleoli, heterochromatin and euchromatin in the nuclei and follow the compaction and decompaction during the cell division cycle.

Download or read book Multiscale X Ray Analysis of Biological Cells and Tissues by Scanning Diffraction and Coherent Imaging written by Jan-David Nicolas and published by Göttingen University Press. This book was released on 2019 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the intricate details of muscle contraction has a long-standing tradition in biophysical research. X-ray diffraction has been one of the key techniques to resolve the nanometer-sized molecular machinery involved in force generation. Modern, powerful X-ray sources now provide billions of X-ray photons in time intervals as short as microseconds, enabling fast time-resolved experiments that shed further light on the complex relationship between muscle structure and function. Another approach harnesses this power by repeatedly performing such an experiment at different locations in a sample. With millions of repeated exposures in a single experiment, X-ray diffraction can seamlessly be turned into a raster imaging method, neatly combining real- and reciprocal space information. This thesis has focused on the advancement of this scanning scheme and its application to soft biological tissue, in particular muscle tissue. Special emphasis was placed on the extraction of meaningful, quantitative structural parameters such as the interfilament distance of the actomyosin lattice in cardiac muscle. The method was further adapted to image biological samples on a range of scales, from isolated cells to millimeter-sized tissue sections. Due to the ‘photon-hungry’ nature of the technique, its full potential is often exploited in combination with full-field imaging techniques. From the vast set of microscopic tools available, coherent full-field X-ray imaging has proven to be particularly useful. This multimodal approach allows to correlate two- and three-dimensional images of cells and tissue with diffraction maps of structure parameters. With the set of tools developed in this thesis, scanning X-ray diffraction can now be efficiently used for the structural analysis of soft biological tissues with overarching future applications in biophysical and biomedical research.

Download or read book Human Mesenchymal Stem Cell Morphology Migration And Differentiation On Micro And Nano Textured Titanium written by Jennifer M. Schneider and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cell-material interactions are of particular interest in biomedical implants because early events between the cells and the biomaterial can define the success of the device. Upon implantation, bacteria compete with mesenchymal stem cells to attach at the implant surface resulting in either biofilm formation or bone tissue integration. The chosen material and surface topography are an integral part of this initial interaction. Previous work has demonstrated the topography of Ti6Al4V has the ability to regulate the early attachment, migration and differentiation of human mesenchymal stem cells (hMSCs). Specifically, titanium surfaces exhibiting macro- micro roughness resulted in improved cell spreading, random migration, and increased differentiation towards an osteoblastic lineage when compared with smooth topographies (both Ti6Al4V and PEEK). The goal of the current investigation was to further characterize the morphology, migration and differentiation of hMSCs on smooth topographies (both Ti6Al4V and PEEK), macro-micro rough topographies (Endoskeleton) and macro-micro-nano rough topographies (nanoLOCK). The primary hypothesis is that the introduction of nano-topography on micro-rough Ti6Al4V will promote improved cell attachment, migration and differentiation. A secondary hypothesis seeks to identify a correlation between the hMSC morphology at early time-points and long-term differentiation.Together the data presented will validate our two initial hypotheses. Notably, adding a nano-roughness to micro-roughened Ti6Al4V improves the velocity of migrating hMSCs in addition to the increasing the rate at which the hMSCs differentiate to osteoblasts. Furthermore, this improved differentiation appears to be correlated to a rapid adoption of a stellate morphology by the hMSCs on the nanoLOCK surfaces. Thus, these results support the combined macro-micro-nano topography of the nanoLOCK surface as being a substantial improvement over all other spinal fusion cage materials and topographies as demonstrated through rapid random migration necessary to cover a surface, the evolution of a morphology typical of mature osteoblasts/osteocytes, and a rapid progression through the early and mid-osteogenic differentiation markers, ALP and OSX respectively.

Download or read book Mesenchymal Stem Cells Basics and Clinical Application II written by Birgit Weyand and published by Springer. This book was released on 2014-07-08 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineered MSCs from Patient-Specific iPS Cells, by Irina Eberle, Mohsen Moslem, Reinhard Henschler, Tobias Cantz Fate of Intravenously Injected Mesenchymal Stem Cells and Significance for Clinical Application, by Beate Wagner, Reinhard Henschler The Implications of Stem Cell Applications for Diseases of the Respiratory System, by Mei Ling Lim, Philipp Jungebluth, Paolo Macchiarini Potential of Mesenchymal Stem Cell Applications in Plastic and Reconstructive Surgery, by Birgit Weyand, Peter M. Vogt General Principles for the Regeneration of Bone and Cartilage, by Michael Jagodzinski, C. Haasper Adult Mesenchymal Stem Cells Explored in the Dental Field, by K. M. Fawzy El-Sayed, C. Dörfer, F. Fändrich, F. Gieseler, M. H. Moustafa, H. Ungefroren Mesenchymal Stem Cell Therapy and Lung Diseases, by Khondoker M. Akram, Sohel Samad, Monica Spiteri, Nicholas R. Forsyth Mesenchymal Stem Cells as Cellular Immunotherapeutics in Allogeneic Hematopoietic Stem Cell Transplantation, by Claudia Papewalis, Daniela Topolar, Barbara Götz, Stefan Schönberger, Dagmar Dilloo New Cell-Based Therapy Paradigm: Induction of Bone Marrow-Derived Multipotent Mesenchymal Stromal Cells into Pro-Inflammatory MSC1 and Anti-inflammatory MSC2 Phenotypes, by Aline M. Betancourt Interactions Between Mesenchymal Stem Cells and Dendritic Cells, by Grazia Maria Spaggiari, Lorenzo Moretta MSC and Tumors: Homing, Differentiation, and Secretion Influence Therapeutic Potential, by Naomi D’souza, Jorge Sans Burns, Giulia Grisendi, Olivia Candini, Elena Veronesi, Serena Piccinno, Edwin M. Horwitz, Paolo Paolucci, Pierfranco Conte, Massimo Dominici Sources of Mesenchymal Stem Cells: Current and Future Clinical Use, by Michela Pozzobon, Martina Piccoli, Paolo De Coppi Role of the EU Framework in Regulation of Stem Cell-Based Products, by Giovanni Migliaccio, Cristina Pintus

Download or read book Mesenchymal Stem Cells Basics and Clinical Application I written by Birgit Weyand and published by Springer. This book was released on 2014-07-08 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Prospective Isolation and Characterization of Human Bone Marrow-Derived MSCs, by A. Harichandan, K. Sivasubramaniyan, H.-J. Bühring Urine as a Source of Stem Cells, by Christina Benda, Ting Zhou, Xianming Wang, Weihua Tian, Johannes Grillari, Hung-Fat Tse, Regina Grillari-Voglauer, Duanqing Pei, Miguel A. Esteban Expansion of Mesenchymal Stem/Stromal Cells under Xenogenic-Free Culture Conditions, by Sven Kinzebach, Karen Bieback Adipose-Derived Mesenchymal Stem Cells: Biology and Potential Applications, by Danielle Minteer, Kacey G Marra, J Peter Rubin Potential for Osteogenic and Chondrogenic Differentiation of MSC, by Antonina Lavrentieva, Tim Hatlapatka, Anne Neumann, Birgit Weyand, Cornelia Kasper Potential for Neural Differentiation of Mesenchymal Stem Cells, by Letizia Ferroni, Chiara Gardin, Ilaria Tocco, Roberta Epis, Alessandro Casadei, Vincenzo Vindigni, Giuseppe Mucci, Barbara Zavan Migratory Properties of Mesenchymal Stem Cells, by Thomas Dittmar, Frank Entschladen Dissecting Paracrine Effectors for Mesenchymal Stem Cells, by Stefania Bruno, Federica Collino, Ciro Tetta, Giovanni Camussi Proteomics Approaches in the Identification of Molecular Signatures of Mesenchymal Stem Cells, by Yin Xiao, Jiezhong Chen Does the Adult Stroma Contain Stem Cells?, by Richard Schäfer

Download or read book X Ray Diffraction Imaging of Biological Cells written by Masayoshi Nakasako and published by Springer. This book was released on 2018-04-12 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the author describes the development of the experimental diffraction setup and structural analysis of non-crystalline particles from material science and biology. Recent advances in X-ray free electron laser (XFEL)-coherent X-ray diffraction imaging (CXDI) experiments allow for the structural analysis of non-crystalline particles to a resolution of 7 nm, and to a resolution of 20 nm for biological materials. Now XFEL-CXDI marks the dawn of a new era in structural analys of non-crystalline particles with dimensions larger than 100 nm, which was quite impossible in the 20th century. To conduct CXDI experiments in both synchrotron and XFEL facilities, the author has developed apparatuses, named KOTOBUKI-1 and TAKASAGO-6 for cryogenic diffraction experiments on frozen-hydrated non-crystalline particles at around 66 K. At the synchrotron facility, cryogenic diffraction experiments dramatically reduce radiation damage of specimen particles and allow tomography CXDI experiments. In addition, in XFEL experiments, non-crystalline particles scattered on thin support membranes and flash-cooled can be used to efficiently increase the rate of XFEL pulses. The rate, which depends on the number density of scattered particles and the size of X-ray beams, is currently 20-90%, probably the world record in XFEL-CXDI experiments. The experiment setups and results are introduced in this book. The author has also developed software suitable for efficiently processing of diffraction patterns and retrieving electron density maps of specimen particles based on the diffraction theory used in CXDI.

Download or read book Cardiac Cytoarchitecture written by Elisabeth Ehler and published by Springer. This book was released on 2015-03-03 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a collection of expert reviews on different subcellular compartments of the cardiomyocyte, addressing fundamental questions such as how these compartments are assembled during development, how they are changed in and by disease and which signaling pathways have been implicated in these processes so far. As such, it offers the first overview of the cell biology of heart disease of its kind, addressing the needs of cell biology students specializing in vascular and cardiac biology, as well as those of cardiologists and researchers in the field of cell biology.

Download or read book Comprehensive Biomaterials II written by Kevin Healy and published by Elsevier. This book was released on 2017-05-18 with total page 4865 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive Biomaterials II, Second Edition, Seven Volume Set brings together the myriad facets of biomaterials into one expertly-written series of edited volumes. Articles address the current status of nearly all biomaterials in the field, their strengths and weaknesses, their future prospects, appropriate analytical methods and testing, device applications and performance, emerging candidate materials as competitors and disruptive technologies, research and development, regulatory management, commercial aspects, and applications, including medical applications. Detailed coverage is given to both new and emerging areas and the latest research in more traditional areas of the field. Particular attention is given to those areas in which major recent developments have taken place. This new edition, with 75% new or updated articles, will provide biomedical scientists in industry, government, academia, and research organizations with an accurate perspective on the field in a manner that is both accessible and thorough. Reviews the current status of nearly all biomaterials in the field by analyzing their strengths and weaknesses, performance, and future prospects Covers all significant emerging technologies in areas such as 3D printing of tissues, organs and scaffolds, cell encapsulation; multimodal delivery, cancer/vaccine - biomaterial applications, neural interface understanding, materials used for in situ imaging, and infection prevention and treatment Effectively describes the many modern aspects of biomaterials from basic science, to clinical applications

Download or read book Coherent X Ray Optics written by David Paganin and published by Oxford University Press on Demand. This book was released on 2006-01-12 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: X-ray optics is undergoing a renaissance, which may be paralleled to that experienced by visible-light optics following the invention of the laser. The associated surge of activity in "coherent" x-ray optics has been documented in this monograph, the first of its type in the field.

Download or read book Cutting Edge Enabling Technologies for Regenerative Medicine written by Heung Jae Chun and published by Springer. This book was released on 2018-10-24 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book explores in depth the latest enabling technologies for regenerative medicine. The opening section examines advances in 3D bioprinting and the fabrication of electrospun and electrosprayed scaffolds. The potential applications of intelligent nanocomposites are then considered, covering, for example, graphene-based nanocomposites, intrinsically conductive polymer nanocomposites, and smart diagnostic contact lens systems. The third section is devoted to various drug delivery systems and strategies for regenerative medicine. Finally, a wide range of future enabling technologies are discussed. Examples include temperature-responsive cell culture surfaces, nanopatterned scaffolds for neural tissue engineering, and process system engineering methodologies for application in tissue development. This is one of two books to be based on contributions from leading experts that were delivered at the 2018 Asia University Symposium on Biomedical Engineering in Seoul, Korea – the companion book examines in depth novel biomaterials for regenerative medicine.

Download or read book Stem Cell Regulators written by and published by Academic Press. This book was released on 2011-11-23 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1943, Vitamins and Hormones is the longest-running serial published by Academic Press. The Editorial Board now reflects expertise in the field of hormone action, vitamin action, X-ray crystal structure, physiology and enzyme mechanisms. Under the capable and qualified editorial leadership of Dr. Gerald Litwack, Vitamins and Hormones continues to publish cutting-edge reviews of interest to endocrinologists, biochemists, nutritionists, pharmacologists, cell biologists and molecular biologists. Others interested in the structure and function of biologically active molecules like hormones and vitamins will, as always, turn to this series for comprehensive reviews by leading contributors to this and related disciplines. This volume focuses on stem cell regulators. Longest running series published by Academic Press Contributions by leading international authorities

Download or read book Regenerative Medicine and Stem Cell Biology written by Nagwa El-Badri and published by Springer Nature. This book was released on 2020-11-27 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook covers the basic aspects of stem cell research and applications in regenerative medicine. Each chapter includes a didactic component and a practical section. The book offers readers insights into: How to identify the basic concepts of stem cell biology and the molecular regulation of pluripotency and stem cell development. How to produce induced pluripotent stem cells (iPSCs) and the basics of transfection. The biology of adult stem cells, with particular emphasis on mesenchymal stromal cells and hematopoietic stem cells, and the basic mechanisms that regulate them. How cancer stem cells arise and metastasize, and their properties. How to develop the skills needed to isolate, differentiate and characterize adult stem The clinical significance of stem cell research and the potential problems that need to be overcome. Evaluating the use of stem cells for tissue engineering and therapies (the amniotic membrane) The applications of bio-nanotechnology in stem cell research. How epigenetic mechanisms, including various DNA modifications and histone dynamics, are involved in regulating the potentiality and differentiation of stem cells. The scientific methods, ethical considerations and implications of stem cell research.

Download or read book Elements of Modern X ray Physics written by Jens Als-Nielsen and published by John Wiley & Sons. This book was released on 2011-04-04 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt: Eagerly awaited, this second edition of a best-selling text comprehensively describes from a modern perspective the basics of x-ray physics as well as the completely new opportunities offered by synchrotron radiation. Written by internationally acclaimed authors, the style of the book is to develop the basic physical principles without obscuring them with excessive mathematics. The second edition differs substantially from the first edition, with over 30% new material, including: A new chapter on non-crystalline diffraction - designed to appeal to the large community who study the structure of liquids, glasses, and most importantly polymers and bio-molecules A new chapter on x-ray imaging - developed in close cooperation with many of the leading experts in the field Two new chapters covering non-crystalline diffraction and imaging Many important changes to various sections in the book have been made with a view to improving the exposition Four-colour representation throughout the text to clarify key concepts Extensive problems after each chapter There is also supplementary book material for this title available online (http://booksupport.wiley.com). Praise for the previous edition: “The publication of Jens Als-Nielsen and Des McMorrow’s Elements of Modern X-ray Physics is a defining moment in the field of synchrotron radiation… a welcome addition to the bookshelves of synchrotron–radiation professionals and students alike.... The text is now my personal choice for teaching x-ray physics…” – Physics Today, 2002

Download or read book Modern Developments in X Ray and Neutron Optics written by Alexei Erko and published by Springer. This book was released on 2008-04-01 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume describes modern developments in reflective, refractive and diffractive optics for short wavelength radiation. It also covers recent theoretical approaches to modelling and ray-tracing the x-ray and neutron optical systems. It is based on the joint research activities of specialists in x-ray and neutron optics, working together under the framework of the European Programme for Cooperation in Science and Technology (COST, Action P7) in the period 2002-2006.

Download or read book Flow Cytometry written by Alice Longobardi Givan and published by John Wiley & Sons. This book was released on 2013-04-10 with total page 309 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flow cytometry continually amazes scientists with its ever-expanding utility. Advances in flow cytometry have opened new directions in theoretical science, clinical diagnosis, and medical practice. The new edition of Flow Cytometry: First Principles provides a thorough update of this now classic text, reflecting innovations in the field while outlining the fundamental elements of instrumentation, sample preparation, and data analysis. Flow Cytometry: First Principles, Second Edition explains the basic principles of flow cytometry, surveying its primary scientific and clinical applications and highlighting state-of-the-art techniques at the frontiers of research. This edition contains extensive revisions of all chapters, including new discussions on fluorochrome and laser options for multicolor analysis, an additionalsection on apoptosis in the chapter on DNA, and new chapters onintracellular protein staining and cell sorting, including high-speed sorting and alternative sorting methods, as well as traditional technology. This essential resource: Assumes no prior knowledge of flow cytometry Progresses with an informal, engaging lecture style from simpleto more complex concepts Offers a clear introduction to new vocabulary, principles of instrumentation, and strategies for data analysis Emphasizes the theory relevant to all flow cytometry, with examples from a variety of clinical and scientific fields Flow Cytometry: First Principles, Second Edition provides scientists, clinicians, technologists, and students with the knowledge necessary for beginning the practice of flow cytometry and for understanding related literature.