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Raja MA, Zeenat S, Arif M, Liu C. Self-assembled nanoparticles based on amphiphilic chitosan derivative and arginine for oral curcumin delivery. Int J Nanomedicine 2016; 11:4397-4412. [PMID: 27660435 PMCID: PMC5019276 DOI: 10.2147/ijn.s106116] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Curcumin (Cur) is a striking anticancer agent, but its low aqueous solubility, poor absorption, hasty metabolism, and elimination limit its oral bioavailability and consequently hinder its development as a drug. To redress these limitations, amphiphilic chitosan (CS) conjugate with improved mucoadhesion and solubility over a wider pH range was developed by modification with hydrophobic acrylonitrile (AN) and hydrophilic arginine (Arg); the synthesized conjugate (AN–CS–Arg), which was well characterized by Fourier transform infrared and 1H nuclear magnetic resonance spectroscopy. Results of critical aggregation concentration revealed that the AN–CS–Arg conjugate had low critical aggregation concentration and was prone to form self-assembled nanoparticles (NPs) in aqueous medium. Cur-encapsulated AN–CS–Arg NPs (AN–CS–Arg/Cur NPs) were developed by a simple sonication method and characterized for the physicochemical parameters such as zeta potential, particle size, and drug encapsulation. The results showed that zeta potential of the prepared NPs was 40.1±2.81 mV and the average size was ~218 nm. A considerable improvement in the aqueous solubility of Cur was observed after encapsulation into AN–CS–Arg/Cur NPs. With the increase in Cur concentration, loading efficiency increased but encapsulation efficiency decreased. The in vitro release profile exhibited sustained release pattern from the AN–CS–Arg/Cur NPs in typical biological buffers. The ex vivo mucoadhesion study revealed that AN–CS–Arg/Cur NPs had greater mucoadhesion than the control CS NPs. Compared with free Cur solution, AN–CS–Arg/Cur NPs showed stronger dose-dependent cytotoxicity against HT-29 cells. In addition, it was observed that cell uptake of AN–CS–Arg/Cur NPs was much higher compared with free Cur. Furthermore, the in vivo pharmacokinetic results in rats demonstrated that the AN–CS–Arg/Cur NPs could remarkably improve the oral bioavailability of Cur. Therefore, the developed AN–CS–Arg/Cur NPs might be a promising nano-candidate for oral delivery of Cur.
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Affiliation(s)
- Mazhar Ali Raja
- College of Marine Life Science, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Shah Zeenat
- College of Marine Life Science, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Muhammad Arif
- College of Marine Life Science, Ocean University of China, Qingdao, Shandong, People's Republic of China
| | - Chenguang Liu
- College of Marine Life Science, Ocean University of China, Qingdao, Shandong, People's Republic of China
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Fairclough M, Prenant C, Ellis B, Boutin H, McMahon A, Brown G, Locatelli P, Jones A. A new technique for the radiolabelling of mixed leukocytes with zirconium-89 for inflammation imaging with positron emission tomography. J Labelled Comp Radiopharm 2016; 59:270-6. [PMID: 27061114 PMCID: PMC5074313 DOI: 10.1002/jlcr.3392] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 02/01/2016] [Accepted: 02/29/2016] [Indexed: 12/11/2022]
Abstract
Mixed leukocyte (white blood cells [WBCs]) trafficking using positron emission tomography (PET) is receiving growing interest to diagnose and monitor inflammatory conditions. PET, a high sensitivity molecular imaging technique, allows precise quantification of the signal produced from radiolabelled moieties. We have evaluated a new method for radiolabelling WBCs with either zirconium-89 ((89) Zr) or copper-64 ((64) Cu) for PET imaging. Chitosan nanoparticles (CNs) were produced by a process of ionotropic gelation and used to deliver radiometals into WBCs. Experiments were carried out using mixed WBCs freshly isolated from whole human blood. WBCs radiolabelling efficiency was higher with [(89) Zr]-loaded CN (76.8 ± 9.6% (n = 12)) than with [(64) Cu]-loaded CN (26.3 ± 7.0 % (n = 7)). [(89) Zr]-WBCs showed an initial loss of 28.4 ± 5.8% (n = 2) of the radioactivity after 2 h. This loss was then followed by a plateau as (89) Zr remains stable in the cells. [(64) Cu]-WBCs showed a loss of 85 ± 6% (n = 3) of the radioactivity after 1 h, which increased to 96 ± 6% (n = 3) loss after 3 h. WBC labelling with [(89) Zr]-loaded CN showed a fast kinetic of leukocyte association, high labelling efficiency and a relatively good retention of the radioactivity. This method using (89) Zr has a potential application for PET imaging of inflammation.
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Affiliation(s)
| | - C. Prenant
- Wolfson Molecular Imaging CentreManchesterUK
| | - B. Ellis
- NHS Foundation TrustCentral Manchester University HospitalManchesterUK
| | - H. Boutin
- Wolfson Molecular Imaging CentreManchesterUK
| | - A. McMahon
- Wolfson Molecular Imaging CentreManchesterUK
| | - G. Brown
- Wolfson Molecular Imaging CentreManchesterUK
| | - P. Locatelli
- Materials Science BuildingUniversity of ManchesterManchesterUK
| | - A.K.P. Jones
- Clinical Sciences BuildingSalford Royal NHS Foundation TrustManchesterUK
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Jiang Q, Yue D, Nie Y, Xu X, He Y, Zhang S, Wagner E, Gu Z. Specially-Made Lipid-Based Assemblies for Improving Transmembrane Gene Delivery: Comparison of Basic Amino Acid Residue Rich Periphery. Mol Pharm 2016; 13:1809-21. [DOI: 10.1021/acs.molpharmaceut.5b00967] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qian Jiang
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Dong Yue
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Yu Nie
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Xianghui Xu
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Yiyan He
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Shiyong Zhang
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
| | - Ernst Wagner
- Center
for Drug Research, Department of Pharmacy, Pharmaceutical Biology-Biotechnology,
and Center for NanoScience (CeNS), Ludwig-Maximilians-Universitat, Butenandtstrasse 5-13, D-81377, Munich, Germany
| | - Zhongwei Gu
- National
Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, Sichuan, P. R. China
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Liu P. Quaternary ammonium salt of chitosan: preparation and antimicrobial property for paper. Open Med (Wars) 2015; 10:473-478. [PMID: 28352739 PMCID: PMC5368866 DOI: 10.1515/med-2015-0081] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 11/09/2015] [Indexed: 11/26/2022] Open
Abstract
A series of 2-hydroxypropyltrimethyl ammonium chloride chitosan (HACC) was prepared by the reaction of chitosan with glycidyl trimethyl ammonium chloride. Structure of HACC was characterized by FT IR and 1H NMR spectroscopies, and it was proved that substitution reaction mainly occurs on the N element. Antimicrobial activities of HACC was examined against S. aureus, E. coli, and A. niger. Results indicatd that the inhibitory effects of HACC solutions were varied with HACC concentration, quaternization degrees, pH values, metal ions, and heat treatment. The antimicrobial properties of handsheets prepared from HACC were studied by the inhibition zone method, and the sheets had good antimicrobial properties against S. aureus and E. coli, and low inhibition rate against A. niger.
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Affiliation(s)
- Pengtao Liu
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science and Technology, Tianjin 300457,
China; State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640,
China
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Macroporous chitosan hydrogels: Effects of sulfur on the loading and release behaviour of amino acid-based compounds. Carbohydr Polym 2015; 132:50-8. [DOI: 10.1016/j.carbpol.2015.06.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 06/04/2015] [Accepted: 06/17/2015] [Indexed: 01/29/2023]
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Kim DY, Kwon DY, Kwon JS, Kim JH, Min BH, Kim MS. Stimuli-Responsive InjectableIn situ-Forming Hydrogels for Regenerative Medicines. POLYM REV 2015. [DOI: 10.1080/15583724.2014.983244] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Luo M, Peng H, Deng Z, Yin Z, Zhao Q, Xiong H. Preparation and Characterization of Genipin-Crosslinked Chitosan Microspheres for the Sustained Release of Salidroside. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2015. [DOI: 10.1515/ijfe-2014-0314] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Abstract
Chitosan microspheres (CsMs) that encapsulate salidroside (Sal) were prepared by the emulsion crosslinking method with naturally occurring genipin (Gp) and then examined for their in vitro release. Sal-loaded CsMs (Sal-CsMs) showed nearly spherical and smooth surfaces with internal voids. The particle size of Sal-CsMs ranged within 0.56–5.01 μm, and their encapsulation efficiency and loading capacity were beyond 77.58% and 23.29%, respectively. The stability of Sal improved after entrapment into the CsMs. The release rate of Sal from CsMs was initially rapid, followed by sustained release. The release behavior depended on the pH of the release medium. The main release mechanisms underlying the release procedure were anomalous behavior and Fickian diffusion. These results indicated that CsMs with a novel crosslinker of Gp was a potential carrier system for producing functional foods containing Sal.
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60
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Yang J, Zhang Q, Chang H, Cheng Y. Surface-Engineered Dendrimers in Gene Delivery. Chem Rev 2015; 115:5274-300. [DOI: 10.1021/cr500542t] [Citation(s) in RCA: 307] [Impact Index Per Article: 34.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jiepin Yang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Qiang Zhang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Hong Chang
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
| | - Yiyun Cheng
- Shanghai
Key Laboratory of
Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai 200241, P. R. China
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Sangsuwan J, Wanichpakorn S, Kedjarune-Leggat U. Translationally controlled tumor protein supplemented chitosan modified glass ionomer cement promotes osteoblast proliferation and function. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 54:61-8. [PMID: 26046268 DOI: 10.1016/j.msec.2015.04.036] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 03/13/2015] [Accepted: 04/21/2015] [Indexed: 01/30/2023]
Abstract
The objective of this study was to evaluate the effect of translationally controlled tumor protein (TCTP) supplemented in a novel glass ionomer cement (BIO-GIC) on normal human osteoblasts (NHost cells). BIO-GIC was a glass ionomer cement (GIC) modified by adding chitosan and albumin to promote the release of TCTP. NHost cells were seeded on specimens of GIC, GIC+TCTP, BIO-GIC and BIO-GIC+TCTP. Cell proliferation was determined by BrdU assay. It was found that BIO-GIC+TCTP had significantly higher proliferation of cells than other specimens. Bone morphogenetic protein-2 (BMP-2) and osteopontin (OPN) gene expressions assessed by quantitative real time PCR and alkaline phosphatase (ALP) activity were used to determine cell differentiation. Bone cell function was investigated by calcium deposition using alizarin assay. Both BMP-2 and OPN gene expressions of cells cultured on specimens with added TCTP increased gradually up-regulation after day 1 and reached the highest on day 3 then down-regulation on day 7. The ALP activity of cells cultured on BIO-GIC+TCTP for 7 days and calcium content after 14 days were significantly higher than other groups. BIO-GIC+TCTP can promote osteoblast cells proliferation, differentiation and function.
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Affiliation(s)
- Jiraporn Sangsuwan
- Department of Molecular Biology and Bioinformatics, Center for Genomics and Bioinformatics Research, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand; Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Supreya Wanichpakorn
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
| | - Ureporn Kedjarune-Leggat
- Department of Oral Biology and Occlusion, Faculty of Dentistry, Prince of Songkla University, Hat Yai, Songkhla 90112, Thailand
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Pang JD, Zhuang BX, Mai K, Chen RF, Wang J, Zhang LM. Click modification of helical amylose by poly( l -lysine) dendrons for non-viral gene delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 49:485-492. [DOI: 10.1016/j.msec.2015.01.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/13/2014] [Accepted: 01/04/2015] [Indexed: 12/26/2022]
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Shu Y, Hao T, Yao F, Qian Y, Wang Y, Yang B, Li J, Wang C. RoY peptide-modified chitosan-based hydrogel to improve angiogenesis and cardiac repair under hypoxia. ACS APPLIED MATERIALS & INTERFACES 2015; 7:6505-6517. [PMID: 25756853 DOI: 10.1021/acsami.5b01234] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Myocardial infarction (MI) still represents the "Number One Killer" in the world. The lack of functional vasculature of the infracted myocardium under hypoxia is one of the main problems for cardiac repair. In this study, a thermosensitive chitosan chloride-RoY (CSCl-RoY) hydrogel was developed to improve angiogenesis under hypoxia after MI. First, RoY peptides were conjugated onto the CSCl chain via amide linkages, and our data show that the conjugation of RoY peptide to CSCl does not interfere with the temperature sensitivity. Then, the effect of CSCl-RoY hydrogels on vascularization in vitro under hypoxia was investigated using human umbilical vein endothelial cells (HUVECs). Results show that CSCl-RoY hydrogels can promote the survival, proliferation, migration and tube formation of HUVECs under hypoxia compared with CSCl hydrogel. Further investigations suggest that CSCl-RoY hydrogels can modulate the expression of membrane surface GRP78 receptor of HUVECs under hypoxia and then activate Akt and ERK1/2 signaling pathways related to cell survival/proliferation, thereby enhancing angiogenic activity of HUVECs under hypoxia. To assess its therapeutic properties in vivo, a MI model was induced in rats by the left anterior descending artery ligation. CSCl or CSCl-RoY hydrogels were injected into the border of infracted hearts. The results demonstrate that the introduction of RoY peptide can not only improve angiogenesis at MI region but also improve the cardiac functions. Overall, we conclude that the CSCl-RoY may represent an ideal scaffold material for injectable cardiac tissue engineering.
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Affiliation(s)
- Yao Shu
- †Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
- ∥Department of Stomatology, Affiliated Hospital of Academy of Military Medical Sciences, Beijing 100071, China
| | - Tong Hao
- †Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
| | - Fanglian Yao
- §Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Yufeng Qian
- ⊥Department of Chemistry and Biochemistry, University of Texas at Austin, 2500 Speedway, Austin, Texas 78712, United States
| | - Yan Wang
- †Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
| | - Boguang Yang
- †Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
- §Department of Polymer Science and Key Laboratory of Systems Bioengineering of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Junjie Li
- †Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
| | - Changyong Wang
- †Department of Advanced Interdisciplinary Studies, Institute of Basic Medical Sciences and Tissue Engineering Research Center, Academy of Military Medical Sciences, No. 27, Taiping Road, Beijing 100850, China
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64
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Sayyar S, Murray E, Thompson BC, Chung J, Officer DL, Gambhir S, Spinks GM, Wallace GG. Processable conducting graphene/chitosan hydrogels for tissue engineering. J Mater Chem B 2015; 3:481-490. [DOI: 10.1039/c4tb01636j] [Citation(s) in RCA: 153] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Electrically conductive, mechanically improved graphene/chitosan/lactic acid composites were synthesised and could be easily processed into multi-layer scaffolds using additive fabrication techniques.
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Affiliation(s)
- S. Sayyar
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - E. Murray
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - B. C. Thompson
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - J. Chung
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - D. L. Officer
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - S. Gambhir
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - G. M. Spinks
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
| | - G. G. Wallace
- ARC Centre of Excellence for Electromaterials Science (ACES)
- Intelligent Polymer Research Institute
- AIIM Facility
- Innovation Campus
- University of Wollongong
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Choi B, Cui ZK, Kim S, Fan J, Wu BM, Lee M. Glutamine-chitosan modified calcium phosphate nanoparticles for efficient siRNA delivery and osteogenic differentiation. J Mater Chem B 2015; 3:6448-6455. [PMID: 26413302 DOI: 10.1039/c5tb00843c] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
RNA interference (RNAi)-based therapy using small interfering RNA (siRNA) exhibits great potential to treat diseases. Although calcium phosphate (CaP)-based systems are attractive options to deliver nucleic acids due to their good biocompatibility and high affinity with nucleic acids, they are limited by uncontrollable particle formation and inconsistent transfection efficiencies. In this study, we developed a stable CaP nanocarrier system with enhanced intracellular uptake by adding highly cationic, glutamine-conjugated oligochitosan (Gln-OChi). CaP nanoparticles coated with Gln-OChi (CaP/Gln-OChi) significantly enhanced gene transfection and knockdown efficiency in both immortalized cell line (HeLa) and primary mesenchymal stem cells (MSCs) with minimal cytotoxicity. The osteogenic bioactivity of siRNA-loaded CaP/Gln-OChi particles was further confirmed in three-dimensional environments by using photocrosslinkable chitosan hydrogels encapsulating MSCs and particles loaded with siRNA targeting noggin, a bone morphogenetic protein antagonist. These findings suggest that our CaP/Gln-OChi nanocarrier provides an efficient and safe gene delivery system for therapeutic applications.
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Affiliation(s)
- Bogyu Choi
- Division of Advanced Prosthodontics, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, California 90095, USA
| | - Zhong-Kai Cui
- Division of Advanced Prosthodontics, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, California 90095, USA
| | - Soyon Kim
- Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, USA
| | - Jiabing Fan
- Division of Advanced Prosthodontics, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, California 90095, USA
| | - Benjamin M Wu
- Division of Advanced Prosthodontics, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, California 90095, USA ; Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, USA
| | - Min Lee
- Division of Advanced Prosthodontics, University of California Los Angeles, 10833 Le Conte Avenue, Los Angeles, California 90095, USA ; Department of Bioengineering, University of California Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, USA
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Luo J, Ling Y, Li X, Yuan B, Yu F, Xie W, Chen X. Combining amphiphilic chitosan and bioglass for mediating cellular osteogenic growth peptide gene. RSC Adv 2015. [DOI: 10.1039/c5ra13628h] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We evaluated the influence of MBG for gene transfection of MBG/CS-mPEG-PCL. This strategy may broaden the biomedical applications of bioglass in the repair and reconstruction of bone and teeth.
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Affiliation(s)
- Jie Luo
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - You Ling
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Xian Li
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Bo Yuan
- Key Laboratory of Biomedical Materials and Engineering
- Ministry of Education
- Guangzhou
- China
| | - Feng Yu
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Weihan Xie
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
| | - Xiaofeng Chen
- School of Materials Science and Engineering
- South China University of Technology
- Guangzhou
- China
- National Engineering Research Center for Tissue Restoration and Reconstruction
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Coma V, Freire CSR, Silvestre AJD. Recent Advances on the Development of Antibacterial Polysaccharide-Based Materials. POLYSACCHARIDES 2015. [DOI: 10.1007/978-3-319-16298-0_12] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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68
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Does the use of chitosan contribute to oxalate kidney stone formation? Mar Drugs 2014; 13:141-58. [PMID: 25551781 PMCID: PMC4306929 DOI: 10.3390/md13010141] [Citation(s) in RCA: 428] [Impact Index Per Article: 42.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 10/30/2014] [Indexed: 11/30/2022] Open
Abstract
Chitosan is widely used in the biomedical field due its chemical and pharmacological properties. However, intake of chitosan results in renal tissue accumulation of chitosan and promotes an increase in calcium excretion. On the other hand, the effect of chitosan on the formation of calcium oxalate crystals (CaOx) has not been described. In this work, we evaluated the antioxidant capacity of chitosan and its interference in the formation of CaOx crystals in vitro. Here, the chitosan obtained commercially had its identity confirmed by nuclear magnetic resonance and infrared spectroscopy. In several tests, this chitosan showed low or no antioxidant activity. However, it also showed excellent copper-chelating activity. In vitro, chitosan acted as an inducer mainly of monohydrate CaOx crystal formation, which is more prevalent in patients with urolithiasis. We also observed that chitosan modifies the morphology and size of these crystals, as well as changes the surface charge of the crystals, making them even more positive, which can facilitate the interaction of these crystals with renal cells. Chitosan greatly influences the formation of crystals in vitro, and in vivo analyses should be conducted to assess the risk of using chitosan.
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69
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Zheng H, Tang C, Yin C. Exploring advantages/disadvantages and improvements in overcoming gene delivery barriers of amino acid modified trimethylated chitosan. Pharm Res 2014; 32:2038-50. [PMID: 25534683 DOI: 10.1007/s11095-014-1597-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 12/05/2014] [Indexed: 01/16/2023]
Abstract
PURPOSE Present study aimed at exploring advantages/disadvantages of amino acid modified trimethylated chitosan in conquering multiple gene delivery obstacles and thus providing comprehensive understandings for improved transfection efficiency. METHODS Arginine, cysteine, and histidine modified trimethyl chitosan were synthesized and employed to self-assemble with plasmid DNA (pDNA) to form nanocomplexes, namely TRNC, TCNC, and THNC, respectively. They were assessed by structural stability, cellular uptake, endosomal escape, release behavior, nuclear localization, and in vitro and in vivo transfection efficiencies. Besides, sodium tripolyphosphate (TPP) was added into TRNC to compromise certain disadvantageous attributes for pDNA delivery. RESULTS Optimal endosomal escape ability failed to bring in satisfactory transfection efficiency of THNC due to drawbacks in structural stability, cellular uptake, pDNA liberation, and nuclear distribution. TCNC evoked the most potent gene expression owing to multiple advantages including sufficient stability, preferable uptake, efficient pDNA release, and high nucleic accumulation. Undesirable stability and insufficient pDNA release adversely affected TRNC-mediated gene transfer. However, incorporation of TPP could improve such disadvantages and consequently resulted in enhanced transfection efficiencies. CONCLUSIONS Coordination of multiple contributing effects to conquer all delivery obstacles was necessitated for improved transfection efficiency, which would provide insights into rational design of gene delivery vehicles.
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Affiliation(s)
- Hao Zheng
- State Key Laboratory of Genetic Engineering Department of Pharmaceutical Sciences, School of Life Sciences, Fudan University, Shanghai, 200433, China
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Shrestha B, Rath JP. Poly(vinyl alcohol)‐coated chitosan microparticles act as an effective oral vaccine delivery system for hepatitis B vaccine in rat model. IET Nanobiotechnol 2014; 8:201-7. [DOI: 10.1049/iet-nbt.2013.0035] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Bijaya Shrestha
- Department of Medical BiotechnologyChettinad Hospital and Research InstituteChettinad Academy of Research and EducationKelambakkam, ChennaiTamil Nadu 603103India
| | - Jyoti Prakash Rath
- Department of Medical BiotechnologyChettinad Hospital and Research InstituteChettinad Academy of Research and EducationKelambakkam, ChennaiTamil Nadu 603103India
- Department of ChemistryGangadhar Meher CollegeSambalpur768004OdishaIndia
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71
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Allen AB, Priddy LB, Li MTA, Guldberg RE. Functional augmentation of naturally-derived materials for tissue regeneration. Ann Biomed Eng 2014; 43:555-67. [PMID: 25422160 DOI: 10.1007/s10439-014-1192-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Accepted: 11/13/2014] [Indexed: 12/12/2022]
Abstract
Tissue engineering strategies have utilized a wide spectrum of synthetic and naturally-derived scaffold materials. Synthetic scaffolds are better defined and offer the ability to precisely and reproducibly control their properties, while naturally-derived scaffolds typically have inherent biological and structural properties that may facilitate tissue growth and remodeling. More recently, efforts to design optimized biomaterial scaffolds have blurred the line between these two approaches. Naturally-derived scaffolds can be engineered through the manipulation of intrinsic properties of the pre-existing backbone (e.g., structural properties), as well as the addition of controllable functional components (e.g., biological properties). Chemical and physical processing techniques used to modify structural properties of synthetic scaffolds have been tailored and applied to naturally-derived materials. Such strategies include manipulation of mechanical properties, degradation, and porosity. Furthermore, biofunctional augmentation of natural scaffolds via incorporation of exogenous cells, proteins, peptides, or genes has been shown to enhance functional regeneration over endogenous response to the material itself. Moving forward, the regenerative mode of action of naturally-derived materials requires additional investigation. Elucidating such mechanisms will allow for the determination of critical design parameters to further enhance efficacy and capitalize on the full potential of naturally-derived scaffolds.
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Affiliation(s)
- Ashley B Allen
- Wallace H. Coulter Department of Biomedical Engineering, Parker H. Petit Institute for Bioengineering & Bioscience, Georgia Institute of Technology, 315 Ferst Drive NW, Atlanta, GA, 30332, USA,
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72
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Synthesis and rheological characterization of water-soluble glycidyltrimethylammonium-chitosan. Mar Drugs 2014; 12:5547-62. [PMID: 25419996 PMCID: PMC4245544 DOI: 10.3390/md12115547] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 11/05/2014] [Accepted: 11/12/2014] [Indexed: 11/17/2022] Open
Abstract
In this study, chitosan (CS) grafted by glycidyltrimethylammonium chloride (GTMAC) to form GTMAC-CS was synthesized, chemically identified, and rheologically characterized. The Maxwell Model can be applied to closely simulate the dynamic rheological performance of the chitosan and the GTMAC-CS solutions, revealing a single relaxation time pertains to both systems. The crossover point of G' and G" shifted toward lower frequencies as the CS concentration increased but remained almost constant frequencies as the GTMAC-CS concentration increased, indicating the solubility of GTMAC-CS in water is good enough to diminish influence from the interaction among polymer chains so as to ensure the relaxation time is independent of the concentration. A frequency-concentration superposition master curve of the CS and GTMAC-CS solutions was subsequently proposed and well fitted with the experimental results. Finally, the sol-gel transition of CS is 8.5 weight % (wt %), while that of GTMAC-CS is 20 wt %, reconfirming the excellent water solubility of the latter.
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73
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Recent Advances on the Development of Polysaccharide-Based. POLYSACCHARIDES 2014. [DOI: 10.1007/978-3-319-03751-6_12-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023] Open
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74
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Xu Y, Yuen PW, Lam JKW. Intranasal DNA Vaccine for Protection against Respiratory Infectious Diseases: The Delivery Perspectives. Pharmaceutics 2014; 6:378-415. [PMID: 25014738 PMCID: PMC4190526 DOI: 10.3390/pharmaceutics6030378] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 06/20/2014] [Accepted: 06/24/2014] [Indexed: 11/16/2022] Open
Abstract
Intranasal delivery of DNA vaccines has become a popular research area recently. It offers some distinguished advantages over parenteral and other routes of vaccine administration. Nasal mucosa as site of vaccine administration can stimulate respiratory mucosal immunity by interacting with the nasopharyngeal-associated lymphoid tissues (NALT). Different kinds of DNA vaccines are investigated to provide protection against respiratory infectious diseases including tuberculosis, coronavirus, influenza and respiratory syncytial virus (RSV) etc. DNA vaccines have several attractive development potential, such as producing cross-protection towards different virus subtypes, enabling the possibility of mass manufacture in a relatively short time and a better safety profile. The biggest obstacle to DNA vaccines is low immunogenicity. One of the approaches to enhance the efficacy of DNA vaccine is to improve DNA delivery efficiency. This review provides insight on the development of intranasal DNA vaccine for respiratory infections, with special attention paid to the strategies to improve the delivery of DNA vaccines using non-viral delivery agents.
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Affiliation(s)
- Yingying Xu
- Department of Pharmacology & Pharmacy, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pokfulam, 21 Sassoon Road, Hong Kong, China.
| | - Pak-Wai Yuen
- Department of Pharmacology & Pharmacy, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pokfulam, 21 Sassoon Road, Hong Kong, China.
| | - Jenny Ka-Wing Lam
- Department of Pharmacology & Pharmacy, Li Ka Shing Faculty of Medicine, the University of Hong Kong, Pokfulam, 21 Sassoon Road, Hong Kong, China.
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75
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Guo Z, Tian H, Lin L, Chen J, He C, Tang Z, Chen X. Hydrophobic Polyalanine Modified Hyperbranched Polyethylenimine as High Efficient pDNA and siRNA Carrier. Macromol Biosci 2014; 14:1406-14. [DOI: 10.1002/mabi.201400044] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 04/16/2014] [Indexed: 11/08/2022]
Affiliation(s)
- Zhaopei Guo
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Huayu Tian
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Lin Lin
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Jie Chen
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Chaoliang He
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Zhaohui Tang
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Changchun 130022 China
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76
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Oral transmucosal drug delivery for pediatric use. Adv Drug Deliv Rev 2014; 73:50-62. [PMID: 23999459 DOI: 10.1016/j.addr.2013.08.011] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Revised: 07/13/2013] [Accepted: 08/22/2013] [Indexed: 12/25/2022]
Abstract
The formulation of medicines for children remains a challenge. An ideal pediatric formulation must allow accurate dose administration and be in a dosage form that can be handled by the target age group. It is also important to consider the choices and the amount of excipients used in the formulation for this vulnerable age group. Although oral formulations are generally acceptable to most pediatric patients, they are not suitable for drugs with poor oral bioavailability or when a rapid clinical effect is required. In recent years, oral transmucosal delivery has emerged as an attractive route of administration for pediatric patients. With this route of administration, a drug is absorbed through the oral mucosa, therefore bypassing hepatic first pass metabolism and thus avoiding drug degradation or metabolism in the gastrointestinal tract. The high blood flow and relatively high permeability of the oral mucosa allow a quick onset of action to be achieved. It is a simple and non-invasive route of drug administration. However, there are several barriers that need to be overcome in the development of oral transmucosal products. This article aims to provide a comprehensive review of the current development of oral transmucosal delivery specifically for the pediatric population in order to achieve systemic drug delivery. The anatomical and physiological properties of the oral mucosa of infants and young children are carefully examined. The different dosage forms and formulation strategies that are suitable for young patients are discussed.
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77
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Vasile BS, Oprea O, Voicu G, Ficai A, Andronescu E, Teodorescu A, Holban A. Synthesis and characterization of a novel controlled release zinc oxide/gentamicin–chitosan composite with potential applications in wounds care. Int J Pharm 2014; 463:161-9. [DOI: 10.1016/j.ijpharm.2013.11.035] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Revised: 11/03/2013] [Accepted: 11/18/2013] [Indexed: 01/03/2023]
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78
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Li X, Fan D, Zhu C, Ma X. Effects of self-assembled fibers on the synthesis, characteristics and biomedical applications of CCAG hydrogels. J Mater Chem B 2014; 2:1234-1249. [DOI: 10.1039/c3tb21628d] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Injectable CCAG hydrogels as body filler materials were prepared by self-assembly of CCA fibers and crosslinking with β-GP.
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Affiliation(s)
- Xian Li
- Shaanxi Key Laboratory of Degradable Biomedical Materials
- Department of Chemical Engineering
- Northwest University
- Xi'an, China
| | - Daidi Fan
- Shaanxi Key Laboratory of Degradable Biomedical Materials
- Department of Chemical Engineering
- Northwest University
- Xi'an, China
| | - Chenhui Zhu
- Shaanxi Key Laboratory of Degradable Biomedical Materials
- Department of Chemical Engineering
- Northwest University
- Xi'an, China
| | - Xiaoxuan Ma
- Shaanxi Key Laboratory of Degradable Biomedical Materials
- Department of Chemical Engineering
- Northwest University
- Xi'an, China
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79
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Fang J, Zhang Y, Yan S, Liu Z, He S, Cui L, Yin J. Poly(L-glutamic acid)/chitosan polyelectrolyte complex porous microspheres as cell microcarriers for cartilage regeneration. Acta Biomater 2014; 10:276-88. [PMID: 24025620 DOI: 10.1016/j.actbio.2013.09.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 08/07/2013] [Accepted: 09/03/2013] [Indexed: 12/30/2022]
Abstract
In this study a novel kind of porous poly(l-glutamic acid) (PLGA)/chitosan polyelectrolyte complex (PEC) microsphere was developed through electrostatic interaction between PLGA and chitosan. By adjusting the formula parameters chitosan microspheres with an average pore size of 47.5 ± 5.4 μm were first developed at a concentration of 2 wt.% and freeze temperature of -20 °C. For self-assembly of the PEC microspheres porous chitosan microspheres were then incubated in PLGA solution at 37 °C. Due to electrostatic interaction a large amount of PLGA (110.3 μg mg(-1)) was homogeneously absorbed within the chitosan microspheres. The developed PEC microspheres retained their original size, pore diameters and interconnected porous structure. Fourier transform infrared spectroscopy, thermal gravimetric analysis and zeta potential analysis revealed that the PEC microspheres were successfully prepared through electrostatic interaction. Compared with microspheres fabricated from chitosan, the porous PEC microspheres were shown to efficiently promote chondrocyte attachment and proliferation. After injection subcutaneously for 8 weeks PEC microspheres loaded with chondrocytes were found to produce significant more cartilaginous matrix than chitosan microspheres. These results indicate that these novel fabricated porous PLGA/chitosan PEC microspheres could be used as injectable cell carriers for cartilage tissue engineering.
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Affiliation(s)
- Jianjun Fang
- Department of Polymer Materials, Shanghai University, 99 Shangda Road, Shanghai 200444, People's Republic of China
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80
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Lord MS, Tsoi BM, Farrugia BL, Simon Ting SR, Baker S, Wiesmann WP, Whitelock JM. Synthesis and characterization of water soluble biomimetic chitosans for bone and cartilage tissue regeneration. J Mater Chem B 2014; 2:6517-6526. [DOI: 10.1039/c4tb00531g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Sulfated chitosan-arginine was synthesized to replicate growth factor-binding glycosaminoglycans. This material promoted cartilage formation from human progenitor cells while chitosan-arginine promoted bone.
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Affiliation(s)
- Megan S. Lord
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | - Bonny M. Tsoi
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | - Brooke L. Farrugia
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | - S. R. Simon Ting
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
| | | | | | - John M. Whitelock
- Graduate School of Biomedical Engineering
- The University of New South Wales
- Sydney, Australia
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81
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Aied A, Greiser U, Pandit A, Wang W. Polymer gene delivery: overcoming the obstacles. Drug Discov Today 2013; 18:1090-8. [DOI: 10.1016/j.drudis.2013.06.014] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2013] [Revised: 06/07/2013] [Accepted: 06/27/2013] [Indexed: 01/07/2023]
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82
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Park SC, Nam JP, Kim YM, Kim JH, Nah JW, Jang MK. Branched polyethylenimine-grafted-carboxymethyl chitosan copolymer enhances the delivery of pDNA or siRNA in vitro and in vivo. Int J Nanomedicine 2013; 8:3663-77. [PMID: 24106426 PMCID: PMC3792010 DOI: 10.2147/ijn.s50911] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
To generate a good carrier for gene transfection, O-carboxymethyl chitosan-graft-branched polyethylenimine (OCMPEI) copolymers were synthesized by increasing the weight percentage of branched polyethylenimine conjugated to the carboxyl groups of O-carboxymethyl chitosan. These spherical polyplexes with plasmid deoxyribonucleic acid (pDNA) or small interfering ribonucleic acid (siRNA) had diameters of ∼200–300 nm or ∼10–25 nm, respectively, and displayed significant transfection efficiency in normal and tumor cells. In particular, expression of green fluorescent protein (GFP) following pDNA transfection was effectively suppressed by delivery of GFP-specific siRNA with the same copolymer. The optimized copolymer and polyplexes were nontoxic in vitro and in vivo. The use of endocytosis inhibitors to investigate the mechanisms of transfection of the polyplexes suggested the involvement of macropinocytosis. An in vivo study in mice showed excellent GFP expression in the lung, kidney, and liver. The results demonstrated that the OCMPEI copolymer prepared in this study is a promising carrier for in vitro and in vivo gene delivery applications.
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Affiliation(s)
- Seong-Cheol Park
- Biomedical Polymer Laboratory, Department of Polymer Science and Engineering, Sunchon National University, Suncheon, Republic of Korea
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83
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Marques JG, Gaspar VM, Costa E, Paquete CM, Correia IJ. Synthesis and characterization of micelles as carriers of non-steroidal anti-inflammatory drugs (NSAID) for application in breast cancer therapy. Colloids Surf B Biointerfaces 2013; 113:375-83. [PMID: 24129330 DOI: 10.1016/j.colsurfb.2013.09.037] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2013] [Revised: 09/10/2013] [Accepted: 09/18/2013] [Indexed: 11/29/2022]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDS) are emerging as a particularly valuable class of drugs due to their recently reported anti-tumoral activity in colorectal cancer. However, despite this tremendous potential, their bioavailability at the tumor microenvironment remains rather limited. To overcome this issue, in this work we synthesized biocompatible micellar nanocarriers composed of amphiphilic chitosan to deliver ibuprofen into breast cancer cells and evaluate its anti-tumor activity, while avoiding side-effects. Our results reveal that the formulations produced herein self-assembly into spherical micelles with suitable sizes for tumor accumulation (108-252 nm). Furthermore, by using a vortex-sonication method, ibuprofen was successfully encapsulated with high efficiency. Cell uptake studies show that ibuprofen-loaded micelles are readily internalized by tumor cells and deliver their cargo in the intracellular compartment as demonstrated by confocal microscopy images. This fact led to a remarkable reduction in cancer cell viability (<13%), at a relatively low drug dosage, illustrating the anti-tumoral activity of ibuprofen when delivered to breast cancer cells. These findings demonstrate the promising potential of chitosan micelles as carriers of cost-effective NSAIDS for application in breast cancer therapy.
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Affiliation(s)
- João G Marques
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Vítor M Gaspar
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Elisabete Costa
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal
| | - Catarina M Paquete
- ITQB-UNL - Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da Republica, Estação Agronómica Nacional, 2780-157 Oeiras, Portugal
| | - Ilídio J Correia
- CICS-UBI - Centro de Investigação em Ciências da Saúde, Universidade da Beira Interior, 6200-506 Covilhã, Portugal.
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84
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85
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Injectable extracellular matrix hydrogel developed using porcine articular cartilage. Int J Pharm 2013; 454:183-91. [PMID: 23834831 DOI: 10.1016/j.ijpharm.2013.06.023] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Revised: 04/16/2013] [Accepted: 06/12/2013] [Indexed: 12/29/2022]
Abstract
This work was first development of a delivery system capable of maintaining a sustained release of protein drugs at specific sites by using potentially biocompatible porcine articular cartilage. The prepared porcine articular cartilage powder (PCP) was easily soluble in phosphate-buffered saline. The PCP suspension easily entrapped bovine serum albumin-fluorescein isothiocyanate (BSA-FITC) in pharmaceutical formulations at room temperature. The aggregation of PCP and BSA-FITC was confirmed by dynamic light scattering. When the BSA-FITC-loaded PCP suspension was subcutaneously injected into rats, it gelled and formed an interconnecting three-dimensional PCP structure that allowed BSA to penetrate through it. The amount of BSA-FITC released from the PCP hydrogel was determined in rat plasma and monitored by real-time in vivo molecular imaging. The data indicated sustained release of BSA-FITC for 20 days in vivo. In addition, the PCP hydrogel induced a slight inflammatory response. In conclusion, we showed that the PCP hydrogel could serve as a minimally invasive therapeutics depot.
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86
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Lu HW, Nie QL, Liu GQ, He H. Synthesis of Biodegradable Chitosan-Poly(D,L-Lactide) Hybrid Amphiphiles via Ring Opening Graft Polymerization for Efficient Gene Carrier. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2013.792640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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87
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Study on the preparation of genipin crosslinked chitosan microspheres of resveratrol and in vitro release. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0175-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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88
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A polyethylenimine-mimetic biodegradable polycation gene vector and the effect of amine composition in transfection efficiency. Biomaterials 2013; 34:4520-31. [DOI: 10.1016/j.biomaterials.2013.02.068] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2013] [Accepted: 02/24/2013] [Indexed: 12/18/2022]
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89
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Ye Y, Xu Y, Liang W, Leung GPH, Cheung KH, Zheng C, Chen F, Lam JKW. DNA-loaded chitosan oligosaccharide nanoparticles with enhanced permeability across Calu-3 cells. J Drug Target 2013; 21:474-86. [PMID: 23480724 DOI: 10.3109/1061186x.2013.766885] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Chitosan oligosaccharide (oligoCS) is a low molecular weight chitosan and its potential for DNA delivery is described here. DNA-loaded oligoCS nanoparticles were prepared by ionic gelation using thiamine pyrophosphate (TPP) as cross-linker. The nanoparticles with oligoCS:DNA: TPP weight ratio of 50:1:25 were approximately 170 nm in diameter with a zeta potential of +40 mV, and were used in the permeability study. The cytotoxicity of oligoCS solutions and nanoparticles was evaluated by MTT assay. The concentrations that exhibited minimal cytotoxicity were employed to investigate their effect on trans-epithelial electrical resistance (TEER) and cellular uptake across the Calu-3 cell layer which was used as a nasal epithelial model. OligoCS nanoparticles were able to cause a significant and reversible decrease in TEER and promote efficient cellular uptake. In addition, the oligoCS nanoparticles were able to enhance paracellular permeability to a greater extent than oligoCS solutions at an equivalent concentration. However, the oligoCS nanoparticles were too large to cross the cell layers through the paracellular route. The transcellular pathway appeared to be the major mechanism of the transportation of oligoCS nanoparticles across the cell layers. OligoCS nanoparticles also allowed efficient DNA incorporation, thereby providing the possibility of controlled nucleic acids release and absorption across epithelial surface.
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Affiliation(s)
- Yiqing Ye
- Women's Hospital, School of Medicine of Zhejiang University, Hangzhou, China
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90
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Malhotra A, Zhang X, Turkson J, Santra S. Buffer-stable chitosan-polyglutamic acid hybrid nanoparticles for biomedical applications. Macromol Biosci 2013; 13:603-13. [PMID: 23460363 DOI: 10.1002/mabi.201200425] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 01/12/2013] [Indexed: 11/07/2022]
Abstract
In spite of their attractive features, widespread biomedical applications of CS nanoparticles are yet to be realized due to their poor stability in physiological conditions, such as in buffer system at pH 7.4. Buffer-stable chitosan-based hybrid NPs (HNPs) are reported and characterized. Buffer stability is achieved by introducing polyglutamic acid to chitosan. The effect of PGA to CS molar ratio and crosslinking on HNP integrity, buffer stability, and biodegradability are studied. Preliminary in vitro studies are carried out to evaluate targeted uptake efficiency of folate conjugated HNPs. Successful demonstration of buffer stability and cancer cell targeting by HNPs achieves important milestones for chitosan-based nanoparticle technology.
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Affiliation(s)
- Astha Malhotra
- NanoScience Technology Center, Department of Chemistry, University of Central Florida, 12424 Research Parkway, Suite 400, Orlando, Florida 32826, USA
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91
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Layek B, Singh J. Amino Acid Grafted Chitosan for High Performance Gene Delivery: Comparison of Amino Acid Hydrophobicity on Vector and Polyplex Characteristics. Biomacromolecules 2013; 14:485-94. [DOI: 10.1021/bm301720g] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Buddhadev Layek
- Department of Pharmaceutical Sciences, College of Pharmacy, Nursing, and Allied Sciences, North Dakota State University, Fargo, North Dakota
58105, United States
| | - Jagdish Singh
- Department of Pharmaceutical Sciences, College of Pharmacy, Nursing, and Allied Sciences, North Dakota State University, Fargo, North Dakota
58105, United States
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