Overview

Hydrogels are attractive materials for uses in regenerative medicine due to their biocompatibility and high water absorbance and retention properties. Applications are emerging in stem cell niches, biopolymers and synthetic polymers for tissue scaffolding, wound healing and hydrogels for cellular diagnostics and delivery. Hydrogels in Cell-Based Therapies looks at the use of different polymers and other bionanomaterials to fabricate different hydrogel systems and their biomedical applications including enzyme responsive hydrogels and biomaterials, thermally responsive hydrogels, collagen gels and alginates. With complementary expertise in cell biology and soft materials, the Editors provide a comprehensive overview of recent updates in this highly topical field. This highly interdisciplinary subject will appeal to researchers in cell biology, biochemistry, biomaterials and polymer science and those interested in hydrogel applications.

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9781849737982

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The authors in this book are easily recognized as some of the who's who In this area of biomedical materials science, with long standing reputations as leaders in the field. The book provides a broad and well-balanced presentation on hydrogel blomaterials and covers assembly and properties of materials based on synthetic polymers, natural polymers, recombinant proteins, and small-molecule gelators. Discussion topics Include materials assembly, characterization, Initial evaluation In cell culture, In vivo experimentation, and translational aspects of science. The book Is a good start for those who want to enter the field of hydrogel blomaterials or need a quick reference on the subject but also contains advanced knowledge such that even the experts will likely find something new for themselves, -- Professor Alexander lellklu Materials Views Hamley consists of 9 chapters devoted to the diverse aspects of blomaterials science with a focus on hydrogels. The authors in this book are easily recognized as some of the who's who In this area of biomedical materials science, with long standing reputations as leaders in the field. The book provides a broad and well-balanced presentation on hydrogel blomaterials and covers assembly and properties of materials based on synthetic polymers, natural polymers, recombinant proteins, and small-molecule gelators. Discussion topics Include materials assembly, characterization, Initial evaluation In cell culture, In vivo experimentation, and translational aspects of science. The book Is a good start for those who want to enter the field of hydrogel blomaterials or need a quick reference on the subject but also contains advanced knowledge such that even the experts will likely find something new for themselves, Transports phenomena In hydrogel blomaterlals are discussed by M. Parlalto and W. Murphy ilnd present the barriers of substrate diffusion, both phenomenologically and through mathematical description of the processes, Spiltio-temporal control over drug delivery as well as diffusion of the nutrients and metabolites Into and out of the hydrogel matrices Is of the highest Importance for practical Implementation of these biomaterlals in all areas of biotechnology and biomedicine. Blocompatiblllty Is one of the most Important aspects to be considered In the context of engineering of biomaterlals. This topic Is particularly lmportilnt when dealing with small molecule gelators- with enhanced rates of cell entry as compared to macromolecules. This subject is discussed by Xu et ill (Brandeis University, USA) from the structure-function perspective and Includes the data of In vivo acceptance of these hydrogels, Engineering hydrogels through successful engineering of constituting proteins Is discussed as an approach to create environment for the cells based on a good understanding of the Interaction between the cells and extracellular matrix. Motivation for this, nature of the Interactions, techniques In the domain-level engineering, successes In protein-engineered cell delivery systems, and translational aspects of this t technology are presented for an overview of this strategy to blomaterlals design by Hells hornet al (Stanford University, USA). Instructive role of blomaterials In tissue engineering Is a hot topic In the blomaterials science. Communication to adhering cells can proceed with the use of chemical stimuli, a notion well understood and used for decades. Further to this, It was recently discovered and Is being rapidly Investigated that hydrogel blomaterlals mimic the tissue and at the same time send Instructive stimuli to the cells -using matrix elasticity, I.e. softness. These opportunities are discussed In two chapters of this book (Connon et al, University of Reading. UK and Yang et al, Trinity College Dublin) and are discussed from a number of perspectives, from aspects of materials engineering and characterization of biomaterlals per their elasticity to translational considerations and medical relevance of these biomedical findings, Encapsulation of problotlc bacteria Is Important for nutritional science and to Improve the shelf life of problotlc foods, One of the most successful approaches to ilchieve this Is based on Immobilization of bacteria within alginate hydrogels, Encapsulation techniques are discussed by Cook et al {Reading, UK) starting with the considerations pertaining to the chemistry of alginates, production of alginate hydrogels, and to demonstration of efficacy of the illglnate microcapsules for encapsulation of problotlcs, The chapter also Includes an anecdotal account of the origin of the field which dates back to 191h century and Includes scientists awarded one of the early Nobel prizes, The use of alginate hydrogels for encapsulation of mammalian cells is a complimentary chapter (Connon et al, Reading UK) and presents successes of these blomaterlals In encapsulating stem cells or differentiated cells for cardiac tissue repair, neovascularlzatlon, construction of neural prosthetics, and other areas of biomedical research, The chapter Includes a broad table of preclinical studies of therapeutic cell delivery using alginate hydrogels. Enzyme responsive hydrogels are presented by Ulljn et al {University of Strathdyde, Glasgow), This subject covers both degradation of the biomaterial by an enzyme through the scission of chains or junction knots of the matrix as well as hydrogelation as a result of an enzymatic process. Of these, tile latter Is the main focus of this chapter and Is discussed In detoll. Blocatalytic hydrogel at!on Is a relatively new but Increasingly popular topic In biomedical research, The main advantage point for this approach is that blomaterials assembly can proceed at constant physiological conditions, Majority of studies make use of peptide hydrogelators and enzyme-catalyzed change in the hydrophiolldty-hydrophobllcity balance in the molecules. The aspects of biomedical engineering around these materials, current applications, and biomedical relevance of these studies are well overvlewed and present!!d for a broad audience. The book Is concluded by a chapter 11f Skarda! (Wake Forest School of Medicine, US) on ECM-IIke hydrogels and specifically focused on applications of these blomaterials In regenerative medicine. Much of the subjects discussed elsewhere in this book come together in this chapter in the context of translational research and practical Implementation of blomaterlals designs In clinic. -- Professor Alexander lellklu Materials Views

Author Information

Ian W. Hamley is Diamond Professor of Physical Chemistry at the University of Reading, UK and holds a Royal Society-Wolfson Research Merit Award. He has previously authored three books on soft matter and block copolymers and edited two texts. His research interests are focussed on soft materials including polymers, colloids and biomaterials. Che Connon is Reader in Tissue Engineering and Cell Therapy. His research focus is primarily in the area of corneal tissue engineering, seeking to engineer functional replacement and temporary 'bridge' tissues while also developing model systems to study physiological and pathophysiological corneal tissue formation.

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