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Lu A, Li S. Polysaccharides as a Hydrophilic Building Block of Amphiphilic Block Copolymers for the Conception of Nanocarriers. Pharmaceutics 2024; 16:467. [PMID: 38675130 PMCID: PMC11054713 DOI: 10.3390/pharmaceutics16040467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/19/2024] [Accepted: 03/21/2024] [Indexed: 04/28/2024] Open
Abstract
Polysaccharides are gaining increasing attention for their relevance in the production of sustainable materials. In the domain of biomaterials, polysaccharides play an important role as hydrophilic components in the design of amphiphilic block copolymers for the development of drug delivery systems, in particular nanocarriers due to their outstanding biocompatibility, biodegradability, and structural versatility. The presence of a reducing end in polysaccharide chains allows for the synthesis of polysaccharide-based block copolymers. Compared with polysaccharide-based graft copolymers, the structure of block copolymers can be more precisely controlled. In this review, the synthesis methods of polysaccharide-based amphiphilic block copolymers are discussed in detail, taking into consideration the structural characteristics of polysaccharides. Various synthetic approaches, including reductive amination, oxime ligation, and other chain-end modification reactions, are explored. This review also focuses on the advantages of polysaccharides as hydrophilic blocks in polymeric nanocarriers. The structure and unique properties of different polysaccharides such as cellulose, hyaluronic acid, chitosan, alginate, and dextran are described along with examples of their applications as hydrophilic segments in the synthesis of amphiphilic copolymers to construct nanocarriers for sustained drug delivery.
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Affiliation(s)
- Aijing Lu
- NMPA Key Laboratory for Quality Research and Control of Tissue Regenerative Biomaterial & NMPA Research Base of Regulatory Science for Medical Devices, Institute of Regulatory Science for Medical Devices, Sichuan University, Chengdu 610064, China;
| | - Suming Li
- Institut Européen des Membranes, UMR CNRS 5635, Université de Montpellier, 34095 Montpellier, France
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di Gregorio MC, Cautela J, Galantini L. Physiology and Physical Chemistry of Bile Acids. Int J Mol Sci 2021; 22:1780. [PMID: 33579036 PMCID: PMC7916809 DOI: 10.3390/ijms22041780] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 02/04/2021] [Indexed: 02/06/2023] Open
Abstract
Bile acids (BAs) are facial amphiphiles synthesized in the body of all vertebrates. They undergo the enterohepatic circulation: they are produced in the liver, stored in the gallbladder, released in the intestine, taken into the bloodstream and lastly re-absorbed in the liver. During this pathway, BAs are modified in their molecular structure by the action of enzymes and bacteria. Such transformations allow them to acquire the chemical-physical properties needed for fulling several activities including metabolic regulation, antimicrobial functions and solubilization of lipids in digestion. The versatility of BAs in the physiological functions has inspired their use in many bio-applications, making them important tools for active molecule delivery, metabolic disease treatments and emulsification processes in food and drug industries. Moreover, moving over the borders of the biological field, BAs have been largely investigated as building blocks for the construction of supramolecular aggregates having peculiar structural, mechanical, chemical and optical properties. The review starts with a biological analysis of the BAs functions before progressively switching to a general overview of BAs in pharmacology and medicine applications. Lastly the focus moves to the BAs use in material science.
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Affiliation(s)
- Maria Chiara di Gregorio
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Jacopo Cautela
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;
| | - Luciano Galantini
- Department of Chemistry, Sapienza University of Rome, 00185 Rome, Italy;
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Omar SH, Osman R, Mamdouh W, Abdel-Bar HM, Awad GAS. Bioinspired lipid-polysaccharide modified hybrid nanoparticles as a brain-targeted highly loaded carrier for a hydrophilic drug. Int J Biol Macromol 2020; 165:483-494. [PMID: 32987085 DOI: 10.1016/j.ijbiomac.2020.09.170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/11/2020] [Accepted: 09/20/2020] [Indexed: 12/31/2022]
Abstract
Lipid-polysaccharide modified biohybrid nanoparticles (NPs) are eminent drug carriers for brain targeting, owing to their ability to prolong the circulation time and penetrate the blood brain barrier (BBB). Biohybrid NPs particular interest arises from their potential to mimic biological components. Herein, we prepared bioinspired lipid polymeric NPs, either naked or surface modified by a synthesized biocompatible dextran-cholic acid (DxC). The nanoprecipitation method was tailored to allow the assembly of the multicomponent NPs in a single step. Modulating the solvent/antisolvent system provided lipid polymer hybrid NPs in the size of 111.6 ± 11.4 nm size. The NPs encapsulated up to 92 ± 1.2% of a hydrophilic anti-Alzheimer drug, rivastigmine (Riv). The brain uptake, biodistribution and pharmacokinetics studies, proved the efficient fast penetration of the bioinspired surface modified NPs to the brain of healthy albino rats. The modified nanocarrier caused a 5.4 fold increase in brain targeting efficiency compared to the drug solution. Furthermore, the presence of DxC increased Riv's brain residence time up to 40 h. The achieved results suggest that the fabricated biohybrid delivery system was able to circumvent the BBB and is expected to minimize Riv systemic side effects.
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Affiliation(s)
- Sara Hassan Omar
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt; Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, New Cairo, Egypt
| | - Rihab Osman
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt.
| | - Wael Mamdouh
- Department of Chemistry, School of Sciences and Engineering, The American University in Cairo, New Cairo, Egypt
| | - Hend Mohamed Abdel-Bar
- Department of Pharmaceutics, Faculty of Pharmacy, University of Sadat City, Menoufia, Egypt
| | - Gehanne A S Awad
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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Anwar DM, Khattab SN, Helmy MW, Kamal MK, Bekhit AA, Elkhodairy KA, Elzoghby AO. Lactobionic/Folate Dual-Targeted Amphiphilic Maltodextrin-Based Micelles for Targeted Codelivery of Sulfasalazine and Resveratrol to Hepatocellular Carcinoma. Bioconjug Chem 2018; 29:3026-3041. [PMID: 30110148 DOI: 10.1021/acs.bioconjchem.8b00428] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study, promising approaches of dual-targeted micelles and drug-polymer conjugation were combined to enable injection of poorly soluble anticancer drugs together with site-specific drug release. Ursodeoxycholic acid (UDCA) as a hepatoprotective agent was grafted to maltodextrin (MD) via carbodiimide coupling to develop amphiphilic maltodextrin-ursodeoxycholic acid (MDCA)-based micelles. Sulfasalazine (SSZ), as a novel anticancer agent, was conjugated via a tumor-cleavable ester bond to MD backbone to obtain tumor-specific release, whereas resveratrol (RSV) was physically entrapped within the hydrophobic micellar core. For maximal tumor-targeting, both folic acid (FA) and lactobionic acid (LA) were coupled to the surface of micelles to obtain dual-targeted micelles. The decrease of critical micelle concentration (CMC) from 0.012 to 0.006 mg/mL declares the significance of a dual hydrophobicized core of micelles by both UDCA and SSZ. The dual-targeted micelles showed a great hemocompatibility, as well as enhanced cytotoxicity and internalization into HepG-2 liver cancer cells via binding to overexpressed folate and asialoglycoprotein receptors. In vivo, the micelles demonstrated superior antitumor effects revealed as reduction in the liver/body weight ratio, inhibition of angiogenesis, and enhanced apoptosis. Overall, combined strategies of dual active targeted micelles with bioresponsive drug conjugation could be utilized as a promising approach for tumor-targeted drug delivery.
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Affiliation(s)
| | - Sherine N Khattab
- Department of Chemistry and #Department of Oceanography , Faculty of Science, Alexandria University , Alexandria 21321 , Egypt
| | - Maged W Helmy
- Department of Pharmacology and Toxicology , Faculty of Pharmacy, Damanhour University , Damanhour 22516 , Egypt
| | - Mohamed K Kamal
- Department of Toxicology , Central Laboratories of Alexandria, Health Affairs Directorate , Alexandria 21518 , Egypt
| | - Adnan A Bekhit
- Pharmacy Program, Allied Health Department, College of Health Sciences , University of Bahrain , P.O. Box 32038, Zallaq , Kingdom of Bahrain
| | | | - Ahmed O Elzoghby
- Division of Engineering in Medicine, Department of Medicine , Brigham and Women's Hospital, Harvard Medical School , Boston , Massachusetts 02115.,Harvard-MIT Division of Health Sciences and Technology, Cambridge , Massachusetts 02139
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Grafting of steroids to hyaluronan towards the design of delivery systems for antioxidants: The role of hydrophobic core. Carbohydr Polym 2018; 193:383-392. [DOI: 10.1016/j.carbpol.2018.04.021] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 04/03/2018] [Accepted: 04/03/2018] [Indexed: 11/23/2022]
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6
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Yi BG, Park OK, Jeong MS, Kwon SH, Jung JI, Lee S, Ryoo S, Kim SE, Kim JW, Moon WJ, Park K. In vitro photodynamic effects of scavenger receptor targeted-photoactivatable nanoagents on activated macrophages. Int J Biol Macromol 2017; 97:181-189. [DOI: 10.1016/j.ijbiomac.2017.01.037] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 12/25/2016] [Accepted: 01/09/2017] [Indexed: 12/14/2022]
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Guan Q, Sun D, Zhang G, Sun C, Wang M, Ji D, Yang W. Docetaxel-Loaded Self-Assembly Stearic Acid-Modified Bletilla striata Polysaccharide Micelles and Their Anticancer Effect: Preparation, Characterization, Cellular Uptake and In Vitro Evaluation. Molecules 2016; 21:E1641. [PMID: 27918445 PMCID: PMC6273633 DOI: 10.3390/molecules21121641] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 11/21/2016] [Accepted: 11/25/2016] [Indexed: 01/30/2023] Open
Abstract
Poorly soluble drugs have low bioavailability after oral administration, thereby hindering effective drug delivery. A novel drug-delivery system of docetaxel (DTX)-based stearic acid (SA)-modified Bletilla striata polysaccharides (BSPs) copolymers was successfully developed. Particle size, zeta potential, encapsulation efficiency (EE), and loading capacity (LC) were determined. The DTX release percentage in vitro was determined using high performance liquid chromatography (HPLC). The hemolysis and in vitro anticancer activity were studied. Cellular uptake and apoptotic rate were measured using flow cytometry assay. Particle size, zeta potential, EE and LC were 125.30 ± 1.89 nm, -26.92 ± 0.18 mV, 86.6% ± 0.17%, and 14.8% ± 0.13%, respectively. The anticancer activities of DTX-SA-BSPs copolymer micelles against HepG2, HeLa, SW480, and MCF-7 (83.7% ± 1.0%, 54.5% ± 4.2%, 48.5% ± 4.2%, and 59.8% ± 1.4%, respectively) were superior to that of docetaxel injection (39.2% ± 1.1%, 44.5% ± 5.3%, 38.5% ± 5.4%, and 49.8% ± 2.9%, respectively) at 0.5 μg/mL drug concentration. The DTX release percentage of DTX-SA-BSPs copolymer micelles and docetaxel injection were 66.93% ± 1.79% and 97.06% ± 1.56% in two days, respectively. Cellular uptake of DTX-FITC-SA-BSPs copolymer micelles in cells had a time-dependent relation. Apoptotic rate of DTX-SA-BSPs copolymer micelles and docetaxel injection were 73.48% and 69.64%, respectively. The SA-BSPs copolymer showed good hemocompatibility. Therefore, SA-BSPs copolymer can be used as a carrier for delivering hydrophobic drugs.
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Affiliation(s)
- Qingxiang Guan
- Department of Pharmaceutics, School of Pharmacy, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Dandan Sun
- Department of Pharmaceutics, School of Pharmacy, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Guangyuan Zhang
- Department of Pharmaceutics, School of Pharmacy, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Cheng Sun
- Department of Pharmaceutics, School of Pharmacy, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Miao Wang
- Department of Pharmaceutics, School of Pharmacy, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Danyang Ji
- Department of Pharmaceutics, School of Pharmacy, Jilin University, No. 1266, Fujin Road, Changchun 130021, China.
| | - Wei Yang
- Department of Neurology, Second Hospital of Jilin University, Changchun 130041, China.
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Abstract
Bile acids are gaining increasing importance as building blocks in the development of novel polymeric materials. This is evidenced by the growing number of publications advocating the advantages of their incorporation in the design and construction of materials. Composed of a rigid steroid backbone, functional groups with potential towards diverse reactions, and a biocompatible framework, there are various ways in which these molecules can be utilized to afford biomaterials via distinct architectures. Soft materials utilize the intrinsic capacity of bile acids to self-assemble and have seen a range of applications, most notably in the field of drug delivery. On the other hand, there is also the possibility of including bile acids in the polymer backbone, which has been used in the preparation of elastomers. This review discusses a selection of materials that can be prepared using bile acids and the advantages afforded by these molecules. Focus will be on the development of soft and hard materials, where soft materials are described as being held by weak intermolecular interactions, whereas hard materials are mechanically stronger with bile acids covalently incorporated in the polymer network.
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Affiliation(s)
- Alexander J. Cunningham
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
| | - X.X. Zhu
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
- Département de Chimie, Université de Montréal, C.P. 1628, Succursale Centre-ville, Montréal, QC H3C 3J7, Canada
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Liu Y, Li J, Lu Y. Enzyme therapeutics for systemic detoxification. Adv Drug Deliv Rev 2015; 90:24-39. [PMID: 25980935 DOI: 10.1016/j.addr.2015.05.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 05/02/2015] [Accepted: 05/07/2015] [Indexed: 12/20/2022]
Abstract
Life relies on numerous biochemical processes working synergistically and correctly. Certain substances disrupt these processes, inducing living organism into an abnormal state termed intoxication. Managing intoxication usually requires interventions, which is referred as detoxification. Decades of development on detoxification reveals the potential of enzymes as ideal therapeutics and antidotes, because their high substrate specificity and catalytic efficiency are essential for clearing intoxicating substances without adverse effects. However, intrinsic shortcomings of enzymes including low stability and high immunogenicity are major hurdles, which could be overcome by delivering enzymes with specially designed nanocarriers. Extensive investigations on protein delivery indicate three types of enzyme-nanocarrier architectures that show more promise than others for systemic detoxification, including liposome-wrapped enzymes, polymer-enzyme conjugates, and polymer-encapsulated enzymes. This review highlights recent advances in these nano-architectures and discusses their applications in systemic detoxifications. Therapeutic potential of various enzymes as well as associated challenges in achieving effective delivery of therapeutic enzymes will also be discussed.
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Li Y, Shen Y, Wang S, Zhu D, Du B, Jiang J. Disulfide cross-linked cholic-acid modified PEG–poly(amino acid) block copolymer micelles for controlled drug delivery of doxorubicin. RSC Adv 2015. [DOI: 10.1039/c5ra02553b] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Reduction responsive biodegradable core-cross-linked micelles are developed form lipoic acid and cholic acid decorated poly(ethylene glycol)-b-poly(l-glutamic acid) block copolymers and investigated for intracellular doxorubicin release.
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Affiliation(s)
- Yuling Li
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Yuling Shen
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Sai Wang
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Dandan Zhu
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Baixiang Du
- School of Chemistry and Chemical Engineering
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
| | - Jihong Jiang
- Key Laboratory of Biotechnology for Medicinal Plant of Jangsu Province
- Jiangsu Normal University
- Xuzhou 221116
- P. R. China
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Natarajan JV, Nugraha C, Ng XW, Venkatraman S. Sustained-release from nanocarriers: a review. J Control Release 2014; 193:122-38. [DOI: 10.1016/j.jconrel.2014.05.029] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/10/2014] [Accepted: 05/17/2014] [Indexed: 12/18/2022]
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Yang J, Gao C, Lü S, Wang X, Chen M, Liu M. Novel self-assembled amphiphilic mPEGylated starch-deoxycholic acid polymeric micelles with pH-response for anticancer drug delivery. RSC Adv 2014. [DOI: 10.1039/c4ra07315k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Du H, Yang X, Pang X, Zhai G. The synthesis, self-assembling, and biocompatibility of a novel O-carboxymethyl chitosan cholate decorated with glycyrrhetinic acid. Carbohydr Polym 2014; 111:753-61. [PMID: 25037412 DOI: 10.1016/j.carbpol.2014.04.095] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/27/2014] [Accepted: 04/28/2014] [Indexed: 11/16/2022]
Abstract
O-carboxymethyl chitosan (OCMC) was firstly decorated with cholic acid (CA) to acquire an amphiphilic polymer under alkaline condition. Then glycyrrhetinic acid (GA) was conjugated to the polymer via a succinate linker and finally treated with NaCO3 solution to obtain new conjugates for potential liver targeted delivery. These conjugates formed uniform aggregates with low critical aggregation concentrations (0.028-0.079 mg/mL) in PBS. The average diameter of cholic acid modified carboxymethyl chitosan (CMCA) aggregates (110-257 nm) decreased with the increase of CA substitution degree and became slightly larger after GA modification. Negative zeta potential (-15 mV) of GA decorated CMCA (GA-CMCA) revealed that the formation of negatively charged shells and spherical morphology was observed under transmission electron microscopy. Furthermore, hemolysis test, in vitro cytotoxicity assay and cellular uptake study all demonstrated the safety and feasibility of these conjugates as a promising carrier for liver targeted drug delivery.
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Affiliation(s)
- Hongliang Du
- Department of Pharmaceutics, College of Pharmacy, Shandong University, 44 Wenhua Xilu, Jinan 250012, China
| | - Xiaoye Yang
- Department of Pharmaceutics, College of Pharmacy, Shandong University, 44 Wenhua Xilu, Jinan 250012, China
| | - Xin Pang
- Department of Pharmaceutics, College of Pharmacy, Shandong University, 44 Wenhua Xilu, Jinan 250012, China
| | - Guangxi Zhai
- Department of Pharmaceutics, College of Pharmacy, Shandong University, 44 Wenhua Xilu, Jinan 250012, China.
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Physicochemical characterization of amphiphilic nanoparticles based on the novel starch–deoxycholic acid conjugates and self-aggregates. Carbohydr Polym 2014; 102:838-45. [DOI: 10.1016/j.carbpol.2013.10.081] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 10/28/2013] [Accepted: 10/29/2013] [Indexed: 11/23/2022]
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Cheng Y, Cai H, Yin B, Yao P. Cholic acid modified N-(2-hydroxy)-propyl-3-trimethylammonium chitosan chloride for superoxide dismutase delivery. Int J Pharm 2013; 454:425-34. [DOI: 10.1016/j.ijpharm.2013.06.056] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/08/2013] [Accepted: 06/13/2013] [Indexed: 10/26/2022]
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Polysaccharide-based micelles for drug delivery. Pharmaceutics 2013; 5:329-52. [PMID: 24300453 PMCID: PMC3834947 DOI: 10.3390/pharmaceutics5020329] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 05/09/2013] [Accepted: 05/16/2013] [Indexed: 11/23/2022] Open
Abstract
Delivery of hydrophobic molecules and proteins has been an issue due to poor bioavailability following administration. Thus, micelle carrier systems are being investigated to improve drug solubility and stability. Due to problems with toxicity and immunogenicity, natural polysaccharides are being explored as substitutes for synthetic polymers in the development of new micelle systems. By grafting hydrophobic moieties to the polysaccharide backbone, self-assembled micelles can be readily formed in aqueous solution. Many polysaccharides also possess inherent bioactivity that can facilitate mucoadhesion, enhanced targeting of specific tissues, and a reduction in the inflammatory response. Furthermore, the hydrophilic nature of some polysaccharides can be exploited to enhance circulatory stability. This review will highlight the advantages of polysaccharide use in the development of drug delivery systems and will provide an overview of the polysaccharide-based micelles that have been developed to date.
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