Mimicking the Extracellular Matrix


Book Description

The extracellular matrix (ECM) is the focus of much interest in biology and bioengineering. Increasing understanding of the influence of the ECM on cell behaviour has led to the exciting possibilities of tissue engineering. Aside from new therapeutic tools, understanding the ECM is of course fundamental to basic cell biology research. Mimicking the Extracellular Matrix approaches this topic from both basic science and practical engineering perspectives. Seven topics are approached each in a pair of chapters, one with a biological approach and its partner with a bioengineering approach. Topics include the mechanical properties of the ECM, which outlines current knowledge of the ECM physical structure and reviewing state-of-the-art strategies to mimic its native microenvironments. The organisational characteristics of the ECM form the focus of another pair of chapters, where the collagen triple helix is discussed, followed by a review of advances in artificial reproduction of well-ordered systems using self-assembling peptides, or peptide amphiphiles. The balanced approach of this text gives it a broad appeal to those interested in the ECM from a range of backgrounds and disciplines. Suitable for undergraduates, postgraduates, and academics, this text aims to unify the current knowledge of ECM biology and matrix-mimicking biomaterials.




Peptides and Proteins as Biomaterials for Tissue Regeneration and Repair


Book Description

Peptides and Proteins as Biomaterials for Tissue Regeneration and Repair highlights the various important considerations that go into biomaterial development, both in terms of fundamentals and applications. After covering a general introduction to protein and cell interactions with biomaterials, the book discusses proteins in biomaterials that mimic the extracellular matrix (ECM). The properties, fabrication and application of peptide biomaterials and protein-based biomaterials are discussed in addition to in vivo and in vitro studies. This book is a valuable resource for researchers, scientists and advanced students interested in biomaterials science, chemistry, molecular biology and nanotechnology. Presents an all-inclusive and authoritative coverage of the important role which protein and peptides play as biomaterials for tissue regeneration Explores protein and peptides from the fundamentals, to processing and applications Written by an international group of leading biomaterials researchers




Rationally Designed Proteinogenic Hydrogels as Extracellular Matrix Mimics for 3D Cell Culture


Book Description

Rationally designed polypeptide-based materials have advantages over other biomaterials for their ability to be engineered from the bottom-up, and to be tailored to the needs of specific potential applications. Based on previous works in the Woolfson laboratory on self- assembling peptide fibres (SAF), this research project focused on developing coiled-coil- based fibrillar hydrogel networks called hydrogelating SAFs (hSAFs), and applying them to more-complex biological systems, notably in cell culture. The hSAFs were tested as a three- dimensional cell-culture scaffold with the aim of mimicking the microenvironment provided by native extracellular matrix (ECM). hSAFs were shown to support growth and differentiation of neuronal cells. Furthermore, a design strategy was explored on how to couple short biomimetic peptides to these proteinogenic scaffolds to enhance cell-matrix interactions. This was achieved by integrating the well-studied cell-adhesion motif RGDS (Arg-Gly-Asp- Ser) to hSAFs using bioorthogonal copper-based click chemistry. Addition of such biomimetic peptides did not alter folding, fibre formation, and higher-order assembly (gelation) of the hSAFs. The resulting functionalised gels promoted early differentiation and longer neurite-like outgrowth in PC12 cells, and of primary rat hippocampal cells. The attached biomimetic peptide was functional and elicited the desired cellular response. Another short biomimetic peptides, i.e. the laminin-derived IKVAV (lIe-Lys-Val-Ala-Val), which supports neurite growth, was also successfully incorporated into hSAFs and gels. Thus, we have demonstrated a chemically defined, bottom-up approach to biological scaffold synthesis and assembly, and further the use of straightforward techniques to incorporate specific biomolecular signals under physiological conditions. Although conditions will need to be optimised for different cell types, hSAF gel formation and functionalisation via click chemistry promise a robust platform in cell-culture studies and potentially for tissue engineering.










Vascularization for Tissue Engineering and Regenerative Medicine


Book Description

This reference work presents the basic principles of angiogenesis induction, including the roles of signaling factors such as hypoxia-inducible factors, biophysical stimulation and angiogenic cells. The book also covers lymphogenesis induction. Both the established fundamentals in the field as well as new trends in the vascularization of engineered tissues are discussed. These include pre-vascularization strategies using preparation of channeled scaffolds and preparation of decellularized blood vessel trees, approaches to inducing formation of microvasculature and approaches to inducing the growth of vascular networks. The authors expand on these concepts with current studies of dual-level approaches to engineer vascularized tissue composites. The book concludes with a discussion of current clinical approaches and the use of vascular grafts in the context of providing clinical practice with new tissue engineering strategies.




Decellularized Extracellular Matrix


Book Description

Using this book, the reader will gain a good foundation to the field complemented with a broad overview of characterisation, microfabrication and applications.




Composition and Function of the Extracellular Matrix in the Human Body


Book Description

The extracellular matrix (ECM) is an ensemble of non-cellular components present within all tissues and organs of the human body. The ECM provides structural support for scaffolding cellular constituents and biochemical and biomechanical support for those events leading to tissue morphogenesis, differentiation and homeostasis. Essential components of all ECMs are water, proteins and polysaccharides. However, their composition, architecture and bioactivity greatly vary from tissue to tissue in relation to the specific role the ECM is required to assume. This book overviews the role of the ECM in different tissues and organs of the human body.




Decellularized Materials


Book Description

This book will consist of 8 chapters, in which important issues regarding decellularized materials (DMs) will be discussed. This book will provide special knowledge of materials for the persons with biomedical background, and special biomedical knowledge for the persons with the background of materials, which will hopefully become a valuable informative read for the researchers and students of biomedical engineering major.




Extracellular Matrix for Tissue Engineering and Biomaterials


Book Description

This volume provides a state-of-art-report on the new methodologies in tissue engineering and developments in the biomaterials field based on the extracellular matrix-relevant discovery. Extracellular Matrix for Tissue Engineering and Biomaterials opens with an overview of the latest extracellular matrix research and in Part I, focuses on its biology and its role on cell behavior and cell fate relevant for the design of biomimetic surfaces. Part II details issues regarding the strategies currently applied in the research of biologically inspired materials and material systems for the replacement, repair and regeneration of tissues and organs. Part III presents the latest development methods applying knowledge from biology towards nanotechnology, to promote the restoration of the functionality of a living tissue. The book ranges from fundamental biology associated with tissue regeneration for the development of biomimetic approaches to controlling tissue formation, cell function, differentiation and angiogenesis using factors involved in normal tissue development and function. With the breadth and depth of the coverage of this topic, this book will serve as a valuable reference for anyone working in tissue engineering or biomaterials – from scientists, chemists and biologists through physicists, bioengineers and clinicians.