Introduction: Alginate microspheres are versatile tools for the delivery of a wide range of therapeutic biomacromolecules. This naturally occurring biopolymer has many unique properties making it an ideal candidate for tailoring with different composites of polymers leading to the formation of strong complexes for a broad range of applications.
Areas Covered: This article overviews various types of composite alginate microspheres, methods of preparation, new technologies available, physico-chemical characteristics, controlled release profiles, applications and the future directions of composite alginate microsphere delivery system for biomacromolecules.
Expert Opinion: Composite alginate microsphere systems are the ideal carriers for controlled delivery applications because of their ability to encapsulate a myriad of therapeutic drugs, proteins, enzymes, DNA, antisense oligonucleotides, vaccines, growth factors and chemokines as well as the ease of processing, mechanical properties, biocompatibility, high bioavailability, controlled release rates, stability, suitability for different administration modes, targeted/localized delivery of different agents and large-scale production with cost-effectiveness. This article presents updated information of applying microalginate-based technologies and tools in the biomedical field which will benefit research scientists and clinical physicians or biopharmaceutical industries keen in the development of application-based new therapeutic and diagnostic strategies for various diseases. Furthermore, this technology will play more important roles in biosensors, vaccination, tissue engineering, cancer chemotherapeutics and stem cell research.
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http://dx.doi.org/10.1517/17425247.2013.796361 | DOI Listing |
Nat Commun
January 2025
Department of Mechanical Engineering, National University of Singapore, Singapore, Singapore.
Biological materials, such as bamboo, are naturally optimized composites with exceptional mechanical properties. Inspired by such natural composites, traditional methods involve extracting nanofibers from natural sources and applying them in composite materials, which, however, often results in less ideal mechanical properties. To address this, this study develops a bottom-up nanofiber assembly strategy to create strong fiber-reinforced composite hydrogels inspired by the hierarchical assembly of bamboo.
View Article and Find Full Text PDFInt J Biol Macromol
January 2025
Department of Obstetrics and Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China. Electronic address:
Intrauterine adhesion (IUA) is an endometrial damage repair disorder that leads to menstrual loss, amenorrhea, and infertility in women; therefore, addressing this dilemma is a critical challenge. In this study, a multifunctional hydrogel, comprising oxidized sodium alginate (OSA), strontium carbonate (SrCO), and betamethasone 21-phosphate sodium (BSP), was formulated to facilitate angiogenesis, reduce fibrosis, and support tissue repair in the treatment of IUA. The composite hydrogels showed significant bioactivity on human endometrial stromal cells (HESCs) and human umbilical vein endothelial cells (HUVECs), promoting the injured HESCs repair, reversing the degree of fibrosis to a certain extent, and enhancing the proliferation and migration of HUVECs.
View Article and Find Full Text PDFBiomaterials
January 2025
Department of Pharmacy, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, 450008, China. Electronic address:
Chronic consequences of diabetes that are most commonly encountered are diabetic foot ulcers (DFUs), driven by microbiota-immune system dyshomeostasis, eventually leading to delayed wound healing. Available therapies, such as systemic or topical administration of anti-inflammatory or antimicrobial agents, are limited due to antibiotic resistance and immune dysfunction. Herein, a hybrid hydrogel dressing is developed as the artificial bioadhesive barrier at wound sites to maintain microbial and immunological homeostasis locally and have potent anti-inflammatory effects.
View Article and Find Full Text PDFPLoS One
January 2025
Centre for Regenerative Medicine and Devices, University of Brighton, Brighton, United Kingdom.
Diabetic foot, leg ulcers and decubitus ulcers affect millions of individuals worldwide leading to poor quality of life, pain and in several cases to limb amputations. Despite the global dimension of this clinical problem, limited progress has been made in developing more efficacious wound dressings, the design of which currently focusses on wound protection and control of its exudate volume. The present in vitro study systematically analysed seven types of clinically-available wound dressings made of different biomaterial composition and engineering.
View Article and Find Full Text PDFJ Funct Biomater
January 2025
Department of Electrical, Electronic and Computer Engineering, University of Ulsan, Ulsan 44610, Republic of Korea.
This research introduced a strategy to fabricate sub-millimeter-diameter artificial liver tissue by extruding a combination of a liver decellularized extracellular matrix (dECM), alginate, endothelial cells, and hepatocytes. Vascularization remains a critical challenge in liver tissue engineering, as replicating the liver's intricate vascular network is essential for sustaining cellular function and viability. Seven scaffold groups were evaluated, incorporating different cell compositions, scaffold materials, and structural configurations.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!