Download or read book PH responsive Amphiphilic Macromolecules for Anticancer Drug and SiRNA Delivery written by Li Gu and published by . This book was released on 2014 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: Amphiphilic macromolecules (AMs), composed of a macromolecular hydrophobic segment and a hydrophilic poly(ethylene glycol) (PEG) are used as drug delivery systems and therapeutics. In this dissertation, AMs maintained physicochemical and biological properties after commercial sterilization treatment indicating AMs are suitable for commercialization. Furthermore, AMs are modified for anticancer drug and siRNA delivery. In this dissertation, pH-sensitive AMs were successfully synthesized to solve the dilemma between stability during circulation and quick drug release at target site. Critical micelle concentrations of the pH-sensitive AMs indicated stability against dilution which occurs during blood circulation. Doxorubicin (DOX) was chosen as the anticancer drug to investigate the pH-dependent drug release profile. Enhanced DOX release at pH 5 was compared to pH 7.4 due to the cleavage of hydrazone in the AM backbone. Further cytotoxicity studies showed that pH-senstive AMs decreased cell viability compared to free DOX and controll micelles. Therefore, the pH-sensitive AMs can achieve both stability in physiological condition and quick drug release at target site. The delivery of short interfering ribonucleic acid (siRNA), a potent gene knock-down therapeutic, is a main issue in biomedical field. In this dissertation, novel cationic amphiphilic macromolecule (CAM)-lipid complexes were developed with comparable transfection efficiency to Lipofectamin, a gold standard siRNA delivery vehicle in vitro. Dynamic light scattering indicated that CAM-lipid complexes possess the pH-responsive features: stable at pH 7.4 (physiological pH) and instable at pH 5 (endosomal pH). Intracellular trafficking demonstrated the endosomal escape of siRNA possibly because of the pH-responsive feature. Furthermore, this dissertation is the first example of using isothermal titration calorimetry to study siRNA release from polymer-liposome systems. Overall, CAM-lipid complex was developed as an efficient siRNA carrier in vitro and mechanistic insights in delivery process provided.
Download or read book Preparation and Evaluation of Amphiphilic Macromolecules based Conjugates and Micelles for Anticancer Drug Delivery written by Leilani Singson Del Rosario and published by . This book was released on 2009 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Micelles assembled from amphiphilic macromolecules (AM) or drug-conjugated AMs were evaluated as anticancer drug carriers in terms of drug content, sustained/controlled drug release and cytotoxicity of encapsulated/bound drug. Physical drug encapsulation was compared with chemical drug conjugation. The AM micelles were compared with known polymeric delivery systems, Pluronic P85 and Cremophor EL. Generally, AM micelles encapsulated drugs as efficiently (or better) than the established polymeric carriers. Encapsulated hydrophobic drugs in AM micelles showed non-aggregation of drug and sustained drug release after lyophilization and resolubilization in aqueous solutions; indicating good solution and storage stability of drug-loaded AM micelles. Compared to the polymeric controls, the AM micelles showed faster resolubilization times and better pH/temperature micellar stability. Cellular entry of AM micelles in human umbilical vein endothelial cells was observed to be endocytotic, observed from the colocalization of fluorescein-labeled AMs and fluorescent dye-stained endosomes or lysosomes that were detected by confocal scanning microscopy. Doxorubicin (DOX) was conjugated to AMs via acidic pH-sensitive hydrazone linkers and the DOX-AM micelles had ~ 30 nm sizes. DOX-AMs showed higher drug release at lysosomal pH 5.0 as compared to physiological pH 7.4. Cell proliferation assays of DOX-AM micelles showed better cytotoxicity compared to DOX-loaded AM micelles and free DOX against human hepatocellular carcinoma cells. As another example of drug conjugation, camptothecin (CPT) was conjugated to AMs via glycine linkers. CPT-AM micelles showed CPT lactone stabilization, higher CPT solubilization, and increased stability against human serum albumin (HSA) on CPT release in vitro. However, cell proliferation assays on the CPT-AM micelles showed comparable cytotoxicity to CPT-loaded AM micelles against human colorectal carcinoma cells. The placement of CPT conjugation was evaluated by CPT conjugation via mucic acid and functionalized alkyl chains. Carbodiimides were used to conjugate CPT to AM mucic acid, whereas click chemistry conjugated alkyne-terminated CPT to azideterminated AM chains. Higher CPT conjugation was achieved via the functionalized chain ends (i.e. click chemistry) compared to the mucic acid (carbodiimide coupling). However, lesser HSA impact on CPT in vitro release was observed in CPT attached to the mucic acid. Overall, the AM-based micelles showed good characteristics as anticancer drug carriers.
Download or read book Miktoarm Star Polymers written by Ashok Kakkar and published by Royal Society of Chemistry. This book was released on 2017-04-13 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: The term ‘miktoarm polymers’ refers to asymmetric branched macromolecules, a relatively new entry to the macromolecular field. Recent advances in their synthesis and intriguing supramolecular chemistry in a desired medium has seen a fast expansion of their applications. The composition of miktoarm polymers can be tailored and even pre-defined to allow a desired combination of functions, meaning polymer chemists can have complete control of the overall architecture of these macromolecules. By carefully selecting the composition, they can create supramolecular structures with intriguing properties, particularly for applications in biology. Miktoarm Star Polymers features chapters from experts actively working in this field, and provides the reader with a unique introduction to the fundamental principles of this exciting macromolecular system. Topics covered include the design, synthesis, characterization, self-assembly and applications of miktoarm polymers. The book is an excellent overview and up to date guide to those working in research in polymer chemistry, materials science, and polymers for medical applications.
Download or read book Cancer Theranostics written by Xiaoyuan Chen and published by Academic Press. This book was released on 2014-03-20 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aiding researchers seeking to eliminate multi-step procedures, reduce delays in treatment and ease patient care, Cancer Theranostics reviews, assesses, and makes pertinent clinical recommendations on the integration of comprehensive in vitro diagnostics, in vivo molecular imaging, and individualized treatments towards the personalization of cancer treatment. Cancer Theranostics describes the identification of novel biomarkers to advance molecular diagnostics of cancer. The book encompasses new molecular imaging probes and techniques for early detection of cancer, and describes molecular imaging-guided cancer therapy. Discussion also includes nanoplatforms incorporating both cancer imaging and therapeutic components, as well as clinical translation and future perspectives. - Supports elimination of multi-step approaches and reduces delays in treatments through combinatorial diagnosis and therapy - Fully assesses cancer theranostics across the emergent field, with discussion of biomarkers, molecular imaging, imaging guided therapy, nanotechnology, and personalized medicine - Content bridges laboratory, clinic, and biotechnology industries to advance biomedical science and improve patient management
Download or read book Drug Delivery Systems Advanced Technologies Potentially Applicable in Personalised Treatment written by Jorge Coelho and published by Springer Science & Business Media. This book was released on 2013-03-15 with total page 433 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is part of a series dedicated to recent advances on preventive, predictive and personalised medicine (PPPM). It focuses on the theme of “Drug delivery systems: advanced technologies potentially applicable in personalised treatments”. The critical topics involving the development and preparation of effective drug delivery systems, such as: polymers available, self-assembly, nanotechnology, pharmaceutical formulations, three dimensional structures, molecular modeling, tailor-made solutions and technological tendencies, are carefully discussed. The understanding of these areas constitutes a paramount route to establish personalised and effective solutions for specific diseases and individuals.
Download or read book Nanomaterials for Cancer Therapy written by Challa S. S. R. Kumar and published by Wiley-VCH. This book was released on 2006-07-24 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: This first comprehensive overview on nanotechnological approaches to cancer therapy brings together therapeutic oncology and nanotechnology, showing the various strategic approaches to selectively eliminating cancerous cells without damaging the surrounding healthy tissue. The strategies covered include magnetic, optical, microwave and neutron absorption techniques, nanocapsules for active agents, nanoparticles as active agents, and active and passive targeting, while also dealing with fundamental aspects of how nanoparticles cross biological barriers. A valuable single source gathering the many articles published in specialized journals often difficult to locate for members of the other disciplines involved.
Download or read book Stimuli Responsive Polymeric Nanocarriers for Drug Delivery Applications written by Abdel Salam Hamdy Makhlouf and published by Woodhead Publishing. This book was released on 2018-10-24 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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
Download or read book Advances in Macromolecular Chemistry written by Wallace M. Pasika and published by . This book was released on 1968 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dendrimers for Drug Delivery written by Anil K. Sharma and published by CRC Press. This book was released on 2018-07-27 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Vascular Biomechanics written by T. Christian Gasser and published by Springer Nature. This book was released on 2022-02-14 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook serves as a modern introduction to vascular biomechanics and provides the comprehensive overview of the entire vascular system that is needed to run successful vascular biomechanics simulations. It aims to provide the reader with a holistic analysis of the vascular system towards its biomechanical description and includes numerous fully through-calculated examples. Various topics covered include vascular system descriptions, vascular exchange, blood vessel mechanics, vessel tissue characterization, blood flow mechanics, and vascular tissue growth and remodeling. This textbook is ideally suited for students and researchers studying and working in classical and computational vascular biomechanics. The book could also be of interest to developers of vascular devices and experts working with the regulatory approval of biomedical simulations. Follows the principle of “learning by doing” and provides numerous fully through-calculated examples for active learning, immediate recall, and self-examination; Provides a holistic understanding of vascular functioning and the integration of information from different disciplines to enable students to use sophisticated numerical methods to simulate the response of the vascular system; Includes several case studies that integrate the presented material. Case studies address problems, such as the biomechanical rupture risk assessment of Abdominal Aortic Aneurysms, Finite Element analysis of structural and blood flow problems, the computation of wall stress and wall shear stress in the aorta.
Download or read book Nanopharmaceuticals Principles and Applications Vol 3 written by Vinod Kumar Yata and published by Springer Nature. This book was released on 2020-08-19 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is the third volume on this subject and focuses on the recent advances of nanopharmaceuticals in cancer, dental, dermal and drug delivery applications and presents their safety, toxicity and therapeutic efficacy. The book also includes the transport phenomenon of nanomaterials and important pathways for drug delivery applications. It goes on to explain the toxicity of nanoparticles to different physiological systems and methods used to assess this for different organ systems using examples of in vivo systems.
Download or read book Therapeutic Oligonucleotides written by Jens Kurreck and published by Royal Society of Chemistry. This book was released on 2008 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a compelling overall update on current status of RNA interference
Download or read book Biomedical Applications of Polymeric Materials and Composites written by Raju Francis and published by John Wiley & Sons. This book was released on 2016-12-19 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: With its content taken from only the very latest results, this is an extensive summary of the various polymeric materials used for biomedical applications. Following an introduction listing various functional polymers, including conductive, biocompatible and conjugated polymers, the book goes on to discuss different synthetic polymers that can be used, for example, as hydrogels, biochemical sensors, functional surfaces, and natural degradable materials. Throughout, the focus is on applications, with worked examples for training purposes as well as case studies included. The whole is rounded off with a look at future trends.
Download or read book Functional Chitosan written by Sougata Jana and published by Springer Nature. This book was released on 2020-03-05 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thanks to their unique properties, chitosan and chitosan-based materials have numerous applications in the field of biomedicine, especially in drug delivery. This book examines biomedical applications of functional chitosan, exploring the various functions and applications in the development of chitosan-based biomaterials. It also describes the chemical structure of chitosan and discusses the relationship between their structure and functions, providing a theoretical basis for the design of biomaterials. Lastly, it reviews chemically modified and composite materials of chitin and chitosan derivatives for biomedical applications, such as tissue engineering, nanomedicine, drug delivery, and gene delivery.
Download or read book Nanoengineering of Biomaterials written by Sougata Jana and published by John Wiley & Sons. This book was released on 2022-04-18 with total page 1063 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive discussion of various types of nanoengineered biomaterials and their applications In Nanoengineering of Biomaterials: Drug Delivery & Biomedical Applications, an expert team of chemists delivers a succinct exploration of the synthesis, characterization, in-vitro and in-vivo drug molecule release, pharmacokinetic activity, pharmacodynamic activity, and the biomedical applications of several types of nanoengineered biomaterials. The editors have also included resources to highlight the most current developments in the field. The book is a collection of valuable and accessible reference sources for researchers in materials chemistry and related disciplines. It uses a functions-directed approach to using organic and inorganic source compounds that translate into biological systems as scaffolds, micelles, dendrimers, and other delivery systems. Nanoengineering of Biomaterials offers readers up-to-date chemistry and material science insights that are readily transferrable to biomedical systems. The book also includes: Thorough introductions to alginate nanoparticle delivery of therapeutics and chitosan-based nanomaterials in biological applications Comprehensive explorations of nanostructured carrageenan as a drug carrier, gellan gum nanoparticles in drug delivery, and guar-gum nanoparticles in the delivery of bioactive molecules Practical discussions of protein-based nanoparticles for drug delivery, solid lipid nanoparticles as drug carriers, and pH-responsive nanoparticles in therapy In-depth examinations of stimuli-responsive nano carriers in drug targeting Perfect for pharmaceutical chemists, materials scientists, polymer chemists, life scientists, and medicinal chemists, Nanoengineering of Biomaterials: Drug Delivery and Biomedical Applications is also an indispensable resource for biologists and bioengineers seeking a one-stop reference on the transferability of materials chemistry and nanotechnology to biomedicine.
Download or read book Nanoscience in Medicine Vol 1 written by Hemant Kumar Daima and published by Springer Nature. This book was released on 2020-01-10 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book takes a systematic approach to address the gaps relating to nanomedicine and bring together fragmented knowledge on the advances on nanomaterials and their biomedical applicability. In particular, it demonstrates an exclusive compilation of state of the art research with a focus on fundamental concepts, current trends, limitations, and future directions of nanomedicine.
Download or read book Polymeric Drug Delivery Systems written by Glen S. Kwon and published by CRC Press. This book was released on 2005-04-12 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emphasizing four major classes of polymers for drug delivery-water-soluble polymers, hydrogels, biodegradable polymers, and polymer assemblies-this reference surveys efforts to adapt, modify, and tailor polymers for challenging molecules such as poorly water-soluble compounds, peptides/proteins, and plasmid DNA.
