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Author: Peng Wei Publisher: ISBN: Category : Languages : de Pages : 0
Book Description
In recent years, the fast development of the supramolecular host-guest interactions has attracted significant attention. Based on the dynamic interaction between macrocyclic structures and a variety of matching guests, two chemical entities can be conveniently bond together without the need for further reactions. These features also facilitate straightforward modifications of polymers to create more advanced materials with tunable properties or additional functionalities. Most commonly cyclodextrins have been used as supramolecular hosts and opened up exiting new opportunities in the field of polymer chemistry. More recently, a new generation of macrocycles, the pillar[n]arenes was established which not only broadened the range of guests but also allowed the facile modification of their exterior. The early reports on these materials certainly prove their potential, however several aspects concerning the building of polymer nanostructures based on such supramolecular host-guest complexes, as well as their therapeutic applications as smart nanocarriers remain unexplored. The overall aim of this thesis was therefore to investigate the capacities of pillar[n]arene based materials in polymer chemistry which includes the formation of supramolecular quasi-block copolymers by host-guest interactions and their formulation into nanoparticles, the tuning of thermoresponsive polymers, as well as using pillar[5]arene to functionalize preformed nanoparticles or nanogels, respectively, for therapeutic applications. This thesis demonstrates the tremendous potential of supramolecular modifications based on pillar[5]arenes for the advancing existing polymer designs and nanostructures. It comprises a detailed characterization of all prepared nanostructures, provides novel aspects to the formulation of smart nanostructures, and examines their suitability for encapsulation and release of pharmaceutical active ingredients.
Author: Peng Wei Publisher: ISBN: Category : Languages : de Pages : 0
Book Description
In recent years, the fast development of the supramolecular host-guest interactions has attracted significant attention. Based on the dynamic interaction between macrocyclic structures and a variety of matching guests, two chemical entities can be conveniently bond together without the need for further reactions. These features also facilitate straightforward modifications of polymers to create more advanced materials with tunable properties or additional functionalities. Most commonly cyclodextrins have been used as supramolecular hosts and opened up exiting new opportunities in the field of polymer chemistry. More recently, a new generation of macrocycles, the pillar[n]arenes was established which not only broadened the range of guests but also allowed the facile modification of their exterior. The early reports on these materials certainly prove their potential, however several aspects concerning the building of polymer nanostructures based on such supramolecular host-guest complexes, as well as their therapeutic applications as smart nanocarriers remain unexplored. The overall aim of this thesis was therefore to investigate the capacities of pillar[n]arene based materials in polymer chemistry which includes the formation of supramolecular quasi-block copolymers by host-guest interactions and their formulation into nanoparticles, the tuning of thermoresponsive polymers, as well as using pillar[5]arene to functionalize preformed nanoparticles or nanogels, respectively, for therapeutic applications. This thesis demonstrates the tremendous potential of supramolecular modifications based on pillar[5]arenes for the advancing existing polymer designs and nanostructures. It comprises a detailed characterization of all prepared nanostructures, provides novel aspects to the formulation of smart nanostructures, and examines their suitability for encapsulation and release of pharmaceutical active ingredients.
Author: Amit Singh Publisher: Royal Society of Chemistry ISBN: 1788014669 Category : Technology & Engineering Languages : en Pages : 376
Book Description
The increased understanding of molecular aspects associated with chronic diseases, such as cancer and the role of tumor microenvironment, has led to the identification of endogenous and exogenous stimuli that can be exploited to devise “stimuli-responsive” materials for site-specific drug delivery applications. This book provides a comprehensive account on the design, materials chemistry, and application aspects behind these novel stimuli-responsive materials. Setting the scene, the editors open with a chapter addressing the need for smart materials in delivery applications for therapy, imaging and disease diagnosis. The following chapter describes the key physical and chemical aspects of smart materials, from lipids to polymers to hybrid materials, providing the reader with a springboard to delve into the more application oriented chapters that follow. With in-depth coverage of key drug delivery systems such as pH-responsive, temperature responsive, enzyme-responsive and light responsive systems, this book provides a rigorous foundation to the field. A perfect resource for graduate students and newcomers, the closing chapter on regulatory and commercialization challenges also makes the book ideal for those wanting to take the next step towards clinical translation.
Book Description
Stimuli Responsive Polymeric Nanocarriers for Drug Delivery Applications: Volume Two: Advanced Nanocarriers for Therapeutics discusses, in detail, the recent trends in designing dual and multi-responsive polymers and nanoparticles for safe drug delivery. Chapters cover dual-responsive polymeric nanocarriers for drug delivery and their different stimuli, multi-responsive polymeric nanocarriers, and the therapeutic applications of stimuli-responsive polymers. With an emphasis on advanced medical applications and synergistic operational and technological methodologies for the improvement of polymers systems for the production of stimuli-responsive polymers, this book is essential reading for materials scientists and researchers working in the drug delivery and pharmaceutical industries. As innovation and development in the area of stimuli responsive polymer-based nanomaterials for drug delivery is moving fast and there is an increased global demand for biodegradable and biocompatible responsive polymers and nanoparticles for safe drug delivery, users will find this to be a timely resource. - Focusses on the most advanced technologies, recent evaluation methods, technical aspects, and advanced synthesis techniques stimuli-responsive polymers - Examines advanced medical applications of stimuli responsive polymers - Analyzes synergistic operational and technological methodologies for the improvement of polymer systems for the production of stimuli-responsive polymers in drug delivery
Book Description
Stimuli Responsive Polymeric Nanocarriers for Drug Delivery Applications, Volume One: Types and Triggers discusses, in detail, the recent trends in designing biodegradable and biocompatible single-responsive polymers and nanoparticles for safe drug delivery. Focusing on the most advanced materials and technologies, evaluation methods, and advanced synthesis techniques stimuli-responsive polymers, the book is an essential reference for scientists with an interest in drug delivery vehicles. Sections focus on innovation, development and the increased global demand for biodegradable and biocompatible responsive polymers and nanoparticles for safe drug delivery. - Offers an in-depth look at the basic and fundamental aspects of alternative stimuli-responsive polymers, mechanisms, structure, synthesis and properties - Provides a well-defined categorization for stimuli-responsive polymers for drug delivery based on different triggering mechanisms - Discusses novel approaches and challenges for scaling up and commercialization of stimuli-responsive polymers
Author: Mallory R. Gordon Publisher: ISBN: Category : Languages : en Pages :
Book Description
In the application of delivery of therapeutics, nanostructures of various composition have been employed due to their capacity to act as a host for lipophilic payloads. Advances in the synthetic preparation, size, morphology, and chemical or physical characteristics of polymers have impacted their development and versatility. A detailed understanding of polymeric nanoparticle host-guest properties is crucial to their practical translation to specific delivery applications. Further, these features must be highly tailorable to overcome biological barriers, stably encapsulate their therapeutic contexts, and exhibit payload release selectively in the target environment. In this dissertation, we aim to rationally design polymeric nano-scale assemblies with well-defined compositions and unique stimuli-responsiveness to achieve desirable host properties and interfacial characteristics. While each chapter is specific in focus, we expect that the fundamental findings in this dissertation to broadly impact principles in drug delivery, including nanoparticle biodistribution (chapter 2), hydrophobic delivery (chapter 3), stimuli-responsive "smart" materials (chapter 4), and polymeric composition development (chapter 5).
Author: Longyu Li Publisher: ISBN: Category : Languages : en Pages :
Book Description
The design and synthesis of responsive supramolecular assemblies are of great interest due to their applications in a variety of areas such as drug delivery and sensing. We have developed a facile method to prepare self-crosslinking disulfide-based nanogels derived from an amphiphilic random copolymer containing a hydrophilic oligo-(ethylene glycol)-based side-chain functionality and a hydrophobic pyridyl disulfide functional group. This thesis first provides a concept of studying the influence of Hofmeister ions on the size and guest encapsulation stability of a polymeric nanogel. The size and core density of nanogel can be fine-tuned through the addition of both chaotropes and kosmotropes during nanogel formation. We demonstrate that the change in core density can affect the guest encapsulation stability and stimuli-responsive character of the nanogel. Fluorescence resonance energy transfer (FRET) has been used as the tool to interrogate the guest-exchange process among varieties of host-guest assemblies, which has proved to be quite a robust method to gain insights regarding the guest encapsulation stability in these host assemblies. We studied the effect of host and guest environment upon the guest-exchange dynamics. By systematically comparing the behavior of pH-sensitive and pH-insensitive nanogels, we show that size, concentration, and hydrophobicity can all play a critical role in guest-exchange dynamics. More importantly, these studies reveal that the dominant mechanism of guest exchange can intimately depend on environmental factors. Nanocarriers that can be effectively transported across cellular membranes have potential in a variety of biomedical applications. We report a facile route to prepare nanogels, which generate surface charge with pH viii as stimulus due to the slightly acidic conditions observed in the extracellular environment of solid tumor. We show that the pH at which the charge is generated, i.e. the isoelectric point (pI) of the nanogel, can be easily adjusted. Intracellular delivery of these nanogels was greatly enhanced in an acidic pH environment due to the surface charge generation. This study demonstrates the versatile nature of the nanogels to introduce specific functionalities with relative ease to achieve desired functional behavior. Further, we have taken advantage of photo-induced heterodisulfide metathesis to develop a reagent-free synthetic method to generate self-crosslinking disulfide-based nanogels crosslinked polymer nanoparticles. In addition, we report on a simple method to prepare monodisperse polymeric nanoparticles through sequential boronate esterification of boronic acids and bifunctional catechols under ambient conditions. Our results suggest that the initial polymer formation, serving as the nucleus for monodisperse nanoparticle assembly, involves a cooperative polymerization, wherein the dative bond between the nitrogen in the imine building blocks and the boron in the boronate ester plays a critical role. The dynamic nature of the dative interaction in this equilibrium self-assembly has been shown to endow these nanoparticles with thermal responsive characteristics. Further, hollow metal-organic nanoparticles (MOPs) were synthesized from these polymeric nanoparticles using a simple metal-comonomer exchange process in a single step. The Kirkendall effect has been identified as the underlying mechanism for the formation of these hollow MOPs, which also allows a unique opportunity to tune the shell thickness of the MOPs. The generality of the methodology is evident from that it is applied for a variety of metal ions with different coordination geometries.
Author: Sarwar Beg Publisher: Elsevier ISBN: 0128210966 Category : Technology & Engineering Languages : en Pages : 403
Book Description
Nanoformulation Strategies for Cancer Treatment provides an up-to-date review on current developments and regulatory and clinical challenges in the field of nanopharmaceuticals and the effective treatment of diverse varieties of cancer. This important reference source is ideal for biomaterials scientists and pharmaceutical scientists working in the area of cancer diagnosis and therapy. Due to the high cost of traditional cancer treatment types, researchers have increasingly looked for new ways to augment the therapeutic performance of existing drug candidates. The use of nanotechnology-based approaches have gained significant momentum, thus leading to the launch of a series of new drug products. As nanopharmaceuticals improve the therapeutic performance of cancer therapy drugs, but also provide opportunities for site-specific drug targeting in tumors, this work is a welcomed resource on the topics discussed. - Highlights the application of nanoformulations, including liposomes, nanoparticles and nanobiomaterials for targeted drug delivery to cancer cells - Explores recent advances made using novel nanoformulations containing herbal drugs and biotechnology based therapeutic strategies for cancer treatment - Assesses the regulatory hurdles that are necessary for the successful clinical translation of nanomedicines from the laboratory into the market
Author: Anil K. Sharma Publisher: CRC Press ISBN: 135136068X Category : Medical Languages : en Pages : 406
Book Description
With chapters from highly skilled, experienced, and renowned scientists and researchers from around the globe, Dendrimers for Drug Delivery provides an abundance of information on dendrimers and their applications in the field of drug delivery. The volume begins with an introduction to dendrimers, summarizing dendrimer applications and the striking features of dendrimers. It goes on to present the details of usual properties, structure, classification, and methods of synthesis, with relevant examples. The toxicity of dendrimers is also discussed. The chapter authors provide an exhaustive amount of information about dendrimers and their biomedical applications, including biocompatibility and toxicity aspects, a very useful feature. This informative volume will be valuable resource that will help readers to create products derived from dendrimers and navigate through the regulatory, manufacturing, and quality control hurdles. It will be an important resource for researchers, scientists, upper-level students, and industry professionals.
Author: Kamal Dua Publisher: Elsevier ISBN: 0323900798 Category : Business & Economics Languages : en Pages : 572
Book Description
Advanced Drug Delivery Systems in the Management of Cancer discusses recent developments in nanomedicine and nano-based drug delivery systems used in the treatment of cancers affecting the blood, lungs, brain, and kidneys. The research presented in this book includes international collaborations in the area of novel drug delivery for the treatment of cancer. Cancer therapy remains one of the greatest challenges in modern medicine, as successful treatment requires the elimination of malignant cells that are closely related to normal cells within the body. Advanced drug delivery systems are carriers for a wide range of pharmacotherapies used in many applications, including cancer treatment. The use of such carrier systems in cancer treatment is growing rapidly as they help overcome the limitations associated with conventional drug delivery systems. Some of the conventional limitations that these advanced drug delivery systems help overcome include nonspecific targeting, systemic toxicity, poor oral bioavailability, reduced efficacy, and low therapeutic index. This book begins with a brief introduction to cancer biology. This is followed by an overview of the current landscape in pharmacotherapy for the cancer management. The need for advanced drug delivery systems in oncology and cancer treatment is established, and the systems that can be used for several specific cancers are discussed. Several chapters of the book are devoted to discussing the latest technologies and advances in nanotechnology. These include practical solutions on how to design a more effective nanocarrier for the drugs used in cancer therapeutics. Each chapter is written with the goal of informing readers about the latest advancements in drug delivery system technologies while reinforcing understanding through various detailed tables, figures, and illustrations. Advanced Drug Delivery Systems in the Management of Cancer is a valuable resource for anyone working in the fields of cancer biology and drug delivery, whether in academia, research, or industry. The book will be especially useful for researchers in drug formulation and drug delivery as well as for biological and translational researchers working in the field of cancer. Presents an overview of the recent perspectives and challenges within the management and diagnosis of cancer Provides insights into how advanced drug delivery systems can effectively be used in the management of a wide range of cancers Includes up-to-date information on diagnostic methods and treatment strategies using controlled drug delivery systems
Author: Peng Wei
Author: Peng Wei
Author: Amit Singh
Author: Abdel Salam Hamdy Makhlouf
Author: Abdel Salam Hamdy Makhlouf
Author: Mallory R. Gordon
Author: Hanlin Ou
Author: Longyu Li
Author: Sarwar Beg
Author: Anil K. Sharma
Author: Kamal Dua