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Molecules
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Drug Delivery Systems Based on Polysaccharides: Second Edition
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Drug Delivery Systems Based on Polysaccharides: Second Edition

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Macromolecular Chemistry".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 2720

Special Issue Editors

Prof. Dr. Marcel Popa

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Guest Editor
“Cristofor Simionescu” Faculty of Chemical Engineering and Environment Protection, “Gheorghe Asachi” Technical University, Iasi, Romania
Interests: polysaccharide modification; bioactive polymers; biomaterials; hydrogels; interpenetrated networks; micro- and nanoparticles (spheres and capsules); hybrid and functionalized nanoparticles for drug targeting; drug delivery; polymer–drug conjugates
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Leonard Ionut Atanase

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Guest Editor
Faculty of Medical Dentistry, “Apollonia” University of Iasi, Romania-11, Pacurari Street, 700511 Iasi, Romania
Interests: block and graft copolymers; micelles; colloids; emulsions; drug delivery; polysaccharides
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The use of polysaccharides in biomedical applications, and especially for obtaining systems capable of encapsulating, transporting, and delivering drugs in a sustained/controlled manner, is an area that has been intensely explored in recent decades, though it remains far from being exhausted. Polysaccharides, and also in large part their derivatives, are ideal supports for these applications, given their biocompatibility with living organisms and being of natural origin themselves. This Special Issue aims to present the latest aspects regarding the realization of polymer–biologically active principle systems in different formats, e.g., films, hydrogels, particles, capsules, implants, inserts, etc., that use polysaccharides and their derivatives as supports. A complementary field of interest is the creation of nanoparticles or nanocapsules for drug delivery, which are, respectively, particles functionalized on the surface with ligands recognizable by receptors that are well expressed in the cell membranes of different organs and hybrid particles containing magnetic nanoparticles encapsulated in polymeric matrices that are capable of active targeting after systemic administration by intravenous injection. Drug-carrying liposomes, stabilized by coating with polysaccharides, as well as their derivatives or copolymers with synthetic polymers, are also of interest for this Special Issue.

Prof. Dr. Marcel Popa
Prof. Dr. Leonard Ionut Atanase
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Molecules is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • polysaccharides
  • polysaccharide derivatives
  • hydrogels
  • micro- and nanoparticles (spheres and capsules)
  • hybrid nanoparticles
  • functionalized nanoparticles for drug targeting
  • micelles based on amphiphilic polysaccharides
  • drug delivery

Related Special Issue

Published Papers (3 papers)

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Research

17 pages, 5620 KiB  
Article
Insulin Conformation Changes in Hybrid Alginate–Gelatin Hydrogel Particles
by Gulzhan Ye. Yerlan, Michael Shen, Bakyt B. Tyussyupova, Sagdat M. Tazhibayeva, Kuanyshbek Musabekov and Paul Takhistov
Molecules 2024, 29(6), 1254; https://doi.org/10.3390/molecules29061254 - 12 Mar 2024
Viewed by 623
Abstract
There is a strong need to develop an insulin delivery system suitable for oral administration and preserving natural (α-helix) insulin conformation. In this work, we fabricated alginate–gelatin hydrogel beads for insulin encapsulation. Altering matrix composition and crosslinking agents has resulted in various surface [...] Read more.
There is a strong need to develop an insulin delivery system suitable for oral administration and preserving natural (α-helix) insulin conformation. In this work, we fabricated alginate–gelatin hydrogel beads for insulin encapsulation. Altering matrix composition and crosslinking agents has resulted in various surface morphologies and internal spatial organization. The structures of the insulin-loaded matrices were studied using optical and field emission electronic microscopy. We use FTIR spectroscopy to identify insulin conformation changes as affected by the hydrogel matrices. It was found that blended alginate–gelatin matrices demonstrate better encapsulation efficiency and stronger swelling resistance to a simulated gastric environment than sodium alginate beads crosslinked with the CaCl2. FTIR measurements reveal conformation changes in insulin. It is also confirmed that in the presence of gelatin, the process of insulin fibrinogenesis ceases due to intermolecular interaction with the gelatin. Performed molecular modeling shows that dipole–dipole interactions are the dominating mechanism that determines insulin behavior within the fabricated matrix. Full article
(This article belongs to the Special Issue Drug Delivery Systems Based on Polysaccharides: Second Edition)
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20 pages, 15030 KiB  
Article
Angelica Sinensis Polysaccharide-Based Nanoparticles for Liver-Targeted Delivery of Oridonin
by Henglai Sun, Jijuan Nai, Biqi Deng, Zhen Zheng, Xuemei Chen, Chao Zhang, Huagang Sheng and Liqiao Zhu
Molecules 2024, 29(3), 731; https://doi.org/10.3390/molecules29030731 - 05 Feb 2024
Viewed by 810
Abstract
The present work aimed to study the feasibility of Angelica sinensis polysaccharide (ASP) as an instinctive liver targeting drug delivery carrier for oridonin (ORI) in the treatment of hepatocellular carcinoma (HCC). ASP was reacted with deoxycholic acid (DOCA) via an esterification reaction to [...] Read more.
The present work aimed to study the feasibility of Angelica sinensis polysaccharide (ASP) as an instinctive liver targeting drug delivery carrier for oridonin (ORI) in the treatment of hepatocellular carcinoma (HCC). ASP was reacted with deoxycholic acid (DOCA) via an esterification reaction to form an ASP-DOCA conjugate. ORI-loaded ASP-DOCA nanoparticles (ORI/ASP-DOCA NPs) were prepared by the thin-film water method, and their size was about 195 nm in aqueous solution. ORI/ASP-DOCA NPs had a drug loading capacity of up to 9.2%. The release of ORI in ORI/ASP-DOCA NPs was pH-dependent, resulting in rapid decomposition and accelerated drug release at acidic pH. ORI/ASP-DOCA NPs significantly enhanced the accumulation of ORI in liver tumors through ASGPR-mediated endocytosis. In vitro results showed that ORI/ASP-DOCA NPs increased cell uptake and apoptosis in HepG2 cells, and in vivo results showed that ORI/ASP-DOCA NPs caused effective tumor suppression in H22 tumor-bearing mice compared with free ORI. In short, ORI/ASP-DOCA NPs might be a simple, feasible, safe and effective ORI nano-drug delivery system that could be used for the targeted delivery and treatment of liver tumors. Full article
(This article belongs to the Special Issue Drug Delivery Systems Based on Polysaccharides: Second Edition)
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Graphical abstract

17 pages, 4759 KiB  
Article
Anticancer Activity of Astaxanthin-Incorporated Chitosan Nanoparticles
by Eun Ju Hwang, Young-IL Jeong, Kyong-Je Lee, Young-Bob Yu, Seung-Ho Ohk and Sook-Young Lee
Molecules 2024, 29(2), 529; https://doi.org/10.3390/molecules29020529 - 21 Jan 2024
Viewed by 1040
Abstract
Astaxanthin (AST)-encapsulated nanoparticles were fabricated using glycol chitosan (Chito) through electrostatic interaction (abbreviated as ChitoAST) to solve the aqueous solubility of astaxanthin and improve its biological activity. AST was dissolved in organic solvents and then mixed with chitosan solution, followed by a dialysis [...] Read more.
Astaxanthin (AST)-encapsulated nanoparticles were fabricated using glycol chitosan (Chito) through electrostatic interaction (abbreviated as ChitoAST) to solve the aqueous solubility of astaxanthin and improve its biological activity. AST was dissolved in organic solvents and then mixed with chitosan solution, followed by a dialysis procedure. All formulations of ChitoAST nanoparticles showed small diameters (less than 400 nm) with monomodal distributions. Analysis with Fourier transform infrared (FT-IR) spectroscopy confirmed the specific peaks of AST and Chito. Furthermore, ChitoAST nanoparticles were formed through electrostatic interactions between Chito and AST. In addition, ChitoAST nanoparticles showed superior antioxidant activity, as good as AST itself; the half maximal radical scavenging concentrations (RC50) of AST and ChitoAST nanoparticles were 11.8 and 29.3 µg/mL, respectively. In vitro, AST and ChitoAST nanoparticles at 10 and 20 µg/mL properly inhibited the production of intracellular reactive oxygen species (ROSs), nitric oxide (NO), and inducible nitric oxide synthase (iNOS). ChitoAST nanoparticles had no significant cytotoxicity against RAW264.7 cells or B16F10 melanoma cells, whereas AST and ChitoAST nanoparticles inhibited the growth of cancer cells. Furthermore, AST itself and ChitoAST nanoparticles (20 µg/mL) efficiently inhibited the migration of cancer cells in a wound healing assay. An in vivo study using mice and a pulmonary metastasis model showed that ChitoAST nanoparticles were efficiently delivered to a lung with B16F10 cell metastasis; i.e., fluorescence intensity in the lung was significantly higher than in other organs. We suggest that ChitoAST nanoparticles are promising candidates for antioxidative and anticancer therapies of B16F10 cells. Full article
(This article belongs to the Special Issue Drug Delivery Systems Based on Polysaccharides: Second Edition)
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