251
|
Oliver S, Thomas DS, Kavallaris M, Vittorio O, Boyer C. Efficient functionalisation of dextran-aldehyde with catechin: potential applications in the treatment of cancer. Polym Chem 2016. [DOI: 10.1039/c6py00228e] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Dextran aldehyde was functionalised with up to 38 wt% catechin and the resulting conjugate demonstrated cytotoxic efficacy against neuroblastoma cells.
Collapse
Affiliation(s)
- Susan Oliver
- Australian Centre for NanoMedicine (ACN)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia 2052
| | - Donald S. Thomas
- Nuclear Magnetic Resonance Facility
- Mark Wainwright Analytical Centre
- University of New South Wales
- Sydney
- Australia 2052
| | - Maria Kavallaris
- Children's Cancer Institute Australia
- Lowy Cancer Research Centre
- University of New South Wales
- Sydney
- Australia 2052
| | - Orazio Vittorio
- Children's Cancer Institute Australia
- Lowy Cancer Research Centre
- University of New South Wales
- Sydney
- Australia 2052
| | - Cyrille Boyer
- Australian Centre for NanoMedicine (ACN)
- School of Chemical Engineering
- University of New South Wales
- Sydney
- Australia 2052
| |
Collapse
|
252
|
Tsai LC, Hsieh HY, Lu KY, Wang SY, Mi FL. EGCG/gelatin-doxorubicin gold nanoparticles enhance therapeutic efficacy of doxorubicin for prostate cancer treatment. Nanomedicine (Lond) 2016; 11:9-30. [DOI: 10.2217/nnm.15.183] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: Development of epigallocatechin gallate (EGCG) and gelatin-doxorubicin conjugate (GLT-DOX)-coated gold nanoparticles (DOX-GLT/EGCG AuNPs) for fluorescence imaging and inhibition of prostate cancer cell growth. Materials & methods: AuNPs alternatively coated with EGCG and DOX-GLT conjugates were prepared by a layer-by-layer assembly method. The physicochemical properties of the AuNPs and the effect of Laminin 67R receptor-mediated endocytosis on the anticancer efficacy of the AuNPs were examined. Results: The AuNPs significantly inhibit the proliferation of PC-3 cancer cell and the enzyme-responsive intracellular release of DOX could be tracked by monitoring the recovery of the fluorescence signal of DOX. Conclusion: Laminin 67R receptor-mediated delivery of DOX using the AuNPs enhanced cellular uptake of DOX and improved apoptosis of PC-3 cells.
Collapse
Affiliation(s)
- Li-Chu Tsai
- Institute of Organic & Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Hao-Ying Hsieh
- Institute of Organic & Polymeric Materials, National Taipei University of Technology, Taipei 10608, Taiwan
- Institute of Biomedical Engineering, National Taiwan University, Taipei 10002, Taiwan
| | - Kun-Ying Lu
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Sin-Yu Wang
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Fwu-Long Mi
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Biochemistry & Molecular Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei City 11031, Taiwan
- Graduate Institute of Nanomedicine & Medical Engineering, College of Biomedical Engineering, Taipei Medical University, Taipei 11031, Taiwan
| |
Collapse
|
253
|
Kang H, Mintri S, Menon AV, Lee HY, Choi HS, Kim J. Pharmacokinetics, pharmacodynamics and toxicology of theranostic nanoparticles. NANOSCALE 2015; 7:18848-62. [PMID: 26528835 PMCID: PMC4648690 DOI: 10.1039/c5nr05264e] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Nanoparticles (NPs) are considered a promising tool in both diagnosis and therapeutics. Theranostic NPs possess the combined properties of targeted imaging and drug delivery within a single entity. While the categorization of theranostic NPs is based on their structure and composition, the pharmacokinetics of NPs are significantly influenced by the physicochemical properties of theranostic NPs as well as the routes of administration. Consequently, altered pharmacokinetics modify the pharmacodynamic efficacy and toxicity of NPs. Although theranostic NPs hold great promise in nanomedicine and biomedical applications, a lack of understanding persists on the mechanisms of the biodistribution and adverse effects of NPs. To better understand the diagnostic and therapeutic functions of NPs, this review discusses the factors that influence the pharmacokinetics, pharmacodynamics and toxicology of theranostic NPs, along with several strategies for developing novel diagnostic and therapeutic modalities.
Collapse
Affiliation(s)
- Homan Kang
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. Phone: 617-667-6024, Fax: 617-667-0214
| | - Shrutika Mintri
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA. Phone: 617-373-3214, Fax: 617-373-8886
| | - Archita Venugopal Menon
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA. Phone: 617-373-3214, Fax: 617-373-8886
| | - Hea Yeon Lee
- Department of Nanotechnology, Detroit R&D, Inc., Detroit, MI 48201, USA
| | - Hak Soo Choi
- Division of Hematology/Oncology, Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02215, USA. Phone: 617-667-6024, Fax: 617-667-0214
| | - Jonghan Kim
- Department of Pharmaceutical Sciences, Northeastern University, Boston, MA 02115, USA. Phone: 617-373-3214, Fax: 617-373-8886
| |
Collapse
|
254
|
Zhang J, Nie S, Martinez-Zaguilan R, Sennoune SR, Wang S. Formulation, characteristics and antiatherogenic bioactivities of CD36-targeted epigallocatechin gallate (EGCG)-loaded nanoparticles. J Nutr Biochem 2015; 30:14-23. [PMID: 27012617 DOI: 10.1016/j.jnutbio.2015.11.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Revised: 10/21/2015] [Accepted: 11/03/2015] [Indexed: 01/12/2023]
Abstract
Intimal macrophages are determinant cells for atherosclerotic lesion formation by releasing inflammatory factors and taking up oxidized low-density lipoprotein (oxLDL) via scavenger receptors, primarily the CD36 receptor. (-)-Epigallocatechin-3-gallate (EGCG) has a potential to decrease cholesterol accumulation and inflammatory responses in macrophages. We made EGCG-loaded nanoparticles (Enano) using phosphatidylcholine, kolliphor HS15, alpha-tocopherol acetate and EGCG. 1-(Palmitoyl)-2-(5-keto-6-octene-dioyl) phosphatidylcholine (KOdiA-PC), a CD36-targeted ligand found on oxLDL, was incorporated on the surface of Enano to make ligand-Enano (L-Enano). The objectives of this study are to deliver EGCG to macrophages via CD36-targeted L-Enano and to determine its antiatherogenic bioactivities. The optimized nanoparticles obtained in our study were spherical and around 108 nm in diameter, and had about 10% of EGCG loading capacity and 96% of EGCG encapsulation efficiency. Compared to Enano, CD36-targeted L-Enano had significantly higher binding affinity to and uptake by macrophages at the same pattern as oxLDL. CD36-targeted L-Enano dramatically improved EGCG stability, increased macrophage EGCG content, delivered EGCG to macrophage cytosol and avoided lysosomes. L-Enano significantly decreased macrophage mRNA levels and protein secretion of monocyte chemoattractant protein 1, but did not significantly change macrophage cholesterol content. The innovative CD36-targeted nanoparticles may facilitate targeted delivery of diagnostic, preventive and therapeutic compounds to intimal macrophages for the diagnosis, prevention and treatment of atherosclerosis with enhanced efficacy and decreased side effects.
Collapse
Affiliation(s)
- Jia Zhang
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX 79409, USA
| | - Shufang Nie
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX 79409, USA
| | - Raul Martinez-Zaguilan
- Department of Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Souad R Sennoune
- Department of Cell Physiology and Molecular Biophysics, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Shu Wang
- Department of Nutritional Sciences, Texas Tech University, Lubbock, TX 79409, USA.
| |
Collapse
|
255
|
Botten D, Fugallo G, Fraternali F, Molteni C. Structural Properties of Green Tea Catechins. J Phys Chem B 2015; 119:12860-7. [DOI: 10.1021/acs.jpcb.5b08737] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Dominic Botten
- Physics
Department, King’s College London, Strand, London WC2R 2LS, United Kingdom
| | - Giorgia Fugallo
- Laboratoire
des Solides Irradiés, École Polytechnique, 91128 Palaiseau Cedex, France
| | - Franca Fraternali
- Randall
Division of Cell and Molecular Biophysics, King’s College London, Guy’s Campus, London SE1 1UL, United Kingdom
| | - Carla Molteni
- Physics
Department, King’s College London, Strand, London WC2R 2LS, United Kingdom
| |
Collapse
|
256
|
Li X, Yang W, Zou Y, Meng F, Deng C, Zhong Z. Efficacious delivery of protein drugs to prostate cancer cells by PSMA-targeted pH-responsive chimaeric polymersomes. J Control Release 2015; 220:704-14. [PMID: 26348387 DOI: 10.1016/j.jconrel.2015.08.058] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 08/22/2015] [Accepted: 08/31/2015] [Indexed: 12/31/2022]
Abstract
Protein drugs as one of the most potent biotherapeutics have a tremendous potential in cancer therapy. Their application is, nevertheless, restricted by absence of efficacious, biocompatible, and cancer-targeting nanosystems. In this paper, we report that 2-[3-[5-amino-1-carboxypentyl]-ureido]-pentanedioic acid (Acupa)-decorated pH-responsive chimaeric polymersomes (Acupa-CPs) efficiently deliver therapeutic proteins into prostate cancer cells. Acupa-CPs had a unimodal distribution with average sizes ranging from 157-175 nm depending on amounts of Acupa. They displayed highly efficient loading of both model proteins, bovine serum albumin (BSA) and cytochrome C (CC), affording high protein loading contents of 9.1-24.5 wt.%. The in vitro release results showed that protein release was markedly accelerated at mildly acidic pH due to the hydrolysis of acetal bonds in the vesicular membrane. CLSM and MTT studies demonstrated that CC-loaded Acupa10-CPs mediated efficient delivery of protein drugs into PSMA positive LNCaP cells leading to pronounced antitumor effect, in contrast to their non-targeting counterparts and free CC. Remarkably, granzyme B (GrB)-loaded Acupa10-CPs caused effective apoptosis of LNCaP cells with a low half-maximal inhibitory concentration (IC50) of 1.6 nM. Flow cytometry and CLSM studies using MitoCapture™ revealed obvious depletion of mitochondria membrane potential in LNCaP cells treated with GrB-loaded Acupa10-CPs. The preliminary in vivo experiments showed that Acupa-CPs had a long circulation time with an elimination phase half-life of 3.3h in nude mice. PSMA-targeted, pH-responsive, and chimaeric polymersomes have appeared as efficient protein nanocarriers for targeted prostate cancer therapy.
Collapse
Affiliation(s)
- Xiang Li
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Weijing Yang
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Yan Zou
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Fenghua Meng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
| | - Chao Deng
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory, and Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
| |
Collapse
|
257
|
Li C, Zhang J, Zu YJ, Nie SF, Cao J, Wang Q, Nie SP, Deng ZY, Xie MY, Wang S. Biocompatible and biodegradable nanoparticles for enhancement of anti-cancer activities of phytochemicals. Chin J Nat Med 2015; 13:641-52. [PMID: 26412423 PMCID: PMC5488276 DOI: 10.1016/s1875-5364(15)30061-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Indexed: 12/21/2022]
Abstract
Many phytochemicals show promise in cancer prevention and treatment, but their low aqueous solubility, poor stability, unfavorable bioavailability, and low target specificity make administering them at therapeutic doses unrealistic. This is particularly true for (-)-epigallocatechin gallate, curcumin, quercetin, resveratrol, and genistein. There is an increasing interest in developing novel delivery strategies for these natural products. Liposomes, micelles, nanoemulsions, solid lipid nanoparticles, nanostructured lipid carriers and poly (lactide-co-glycolide) nanoparticles are biocompatible and biodegradable nanoparticles. Those nanoparticles can increase the stability and solubility of phytochemicals, exhibit a sustained release property, enhance their absorption and bioavailability, protect them from premature enzymatic degradation or metabolism, prolong their circulation time, improve their target specificity to cancer cells or tumors via passive or targeted delivery, lower toxicity or side-effects to normal cells or tissues through preventing them from prematurely interacting with the biological environment, and enhance anti-cancer activities. Nanotechnology opens a door for developing phytochemical-loaded nanoparticles for prevention and treatment of cancer.
Collapse
Affiliation(s)
- Chuan Li
- Department of Nutritional Sciences, Texas Tech University, Lubbock TX 79409, USA; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Jia Zhang
- Department of Nutritional Sciences, Texas Tech University, Lubbock TX 79409, USA
| | - Yu-Jiao Zu
- Department of Nutritional Sciences, Texas Tech University, Lubbock TX 79409, USA
| | - Shu-Fang Nie
- Nutrilite Health Institute, Buena Park, CA 90622, USA
| | - Jun Cao
- Department of Nutritional Sciences, Texas Tech University, Lubbock TX 79409, USA; State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Qian Wang
- Department of Hematology and Oncology, The First Hospital of Jilin University, Changchun 130021, China
| | - Shao-Ping Nie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ze-Yuan Deng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Ming-Yong Xie
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Shu Wang
- Department of Nutritional Sciences, Texas Tech University, Lubbock TX 79409, USA.
| |
Collapse
|
258
|
Chen J, Zhang W, Zhang M, Guo Z, Wang H, He M, Xu P, Zhou J, Liu Z, Chen Q. Mn(II) mediated degradation of artemisinin based on Fe3O4@MnSiO3-FA nanospheres for cancer therapy in vivo. NANOSCALE 2015; 7:12542-12551. [PMID: 26140326 DOI: 10.1039/c5nr02402a] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Artemisinin (ART) is a natural drug with potent anticancer activities related with Fe(2+) mediated cleavage of the endoperoxide bridge in ART. Herein, we reported that Mn(2+) could substitute for Fe(2+) to react with ART and generate toxic products, inducing a much higher anticancer efficiency. On this basis, we prepared pH-responsive Fe3O4@MnSiO3-FA nanospheres which can efficiently deliver hydrophobic ART into tumors in mice models. Mn(2+) was released in acidic tumor environments and intracellular lysosomes, interacting with ART to kill cancer cells. The ART-loaded nanocarriers could suppress tumor growth more efficiently than free ART, which could be further illustrated by magnetic resonance imaging (MRI). Histological analysis revealed that the drug delivery system had no obvious effect on the major organs of mice. ART has been reported to have lower toxicity than chemotherapeutics. The ART-loaded nanocarriers are promising to be used in improving the survival of chemotherapy patients, providing a novel method for clinical tumor therapy.
Collapse
Affiliation(s)
- Jian Chen
- Hefei National Laboratory for Physical Sciences at Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, Department of Materials Science & Engineering, CAS High Magnetic Field Laboratory, University of Science and Technology of China, Hefei, 230026, China.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
259
|
Microneedle-array patches loaded with hypoxia-sensitive vesicles provide fast glucose-responsive insulin delivery. Proc Natl Acad Sci U S A 2015; 112:8260-5. [PMID: 26100900 DOI: 10.1073/pnas.1505405112] [Citation(s) in RCA: 503] [Impact Index Per Article: 55.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
A glucose-responsive "closed-loop" insulin delivery system mimicking the function of pancreatic cells has tremendous potential to improve quality of life and health in diabetics. Here, we report a novel glucose-responsive insulin delivery device using a painless microneedle-array patch ("smart insulin patch") containing glucose-responsive vesicles (GRVs; with an average diameter of 118 nm), which are loaded with insulin and glucose oxidase (GOx) enzyme. The GRVs are self-assembled from hypoxia-sensitive hyaluronic acid (HS-HA) conjugated with 2-nitroimidazole (NI), a hydrophobic component that can be converted to hydrophilic 2-aminoimidazoles through bioreduction under hypoxic conditions. The local hypoxic microenvironment caused by the enzymatic oxidation of glucose in the hyperglycemic state promotes the reduction of HS-HA, which rapidly triggers the dissociation of vesicles and subsequent release of insulin. The smart insulin patch effectively regulated the blood glucose in a mouse model of chemically induced type 1 diabetes. The described work is the first demonstration, to our knowledge, of a synthetic glucose-responsive device using a hypoxia trigger for regulation of insulin release. The faster responsiveness of this approach holds promise in avoiding hyperglycemia and hypoglycemia if translated for human therapy.
Collapse
|
260
|
Yang C, Liu SQ, Venkataraman S, Gao SJ, Ke X, Chia XT, Hedrick JL, Yang YY. Structure-directing star-shaped block copolymers: Supramolecular vesicles for the delivery of anticancer drugs. J Control Release 2015; 208:93-105. [DOI: 10.1016/j.jconrel.2015.03.027] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2014] [Revised: 03/20/2015] [Accepted: 03/21/2015] [Indexed: 10/23/2022]
|
261
|
Lu L, Zou Y, Yang W, Meng F, Deng C, Cheng R, Zhong Z. Anisamide-Decorated pH-Sensitive Degradable Chimaeric Polymersomes Mediate Potent and Targeted Protein Delivery to Lung Cancer Cells. Biomacromolecules 2015; 16:1726-35. [DOI: 10.1021/acs.biomac.5b00193] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ling Lu
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Yan Zou
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Weijing Yang
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Fenghua Meng
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Chao Deng
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Ru Cheng
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| | - Zhiyuan Zhong
- Biomedical Polymers Laboratory,
and Jiangsu Key Laboratory of Advanced Functional Polymer Design and
Application, College of Chemistry, Chemical Engineering and Materials
Science, Soochow University, Suzhou, 215123, People’s Republic of China
| |
Collapse
|
262
|
Zheng DW, Li JL, Li C, Xu ZS, Cheng SX, Zhang XZ. Viscosity enhanced release (VER) effect in nanoporous drug delivery systems: phenomenon and mechanism. J Mater Chem B 2015; 3:3483-3489. [PMID: 32262231 DOI: 10.1039/c5tb00267b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
High viscosity is important for normal intracellular homeostasis. In this study, nanoporous drug delivery systems (DDSs), including mesoporous silica nanoparticles (MSNs) and layer by layer (LBL) microcapsules, with a viscosity enhanced release (VER) effect were designed and prepared, and their drug release behaviors in a sticky environment with a high viscosity were investigated using rhodamine B, methylene blue and doxorubicin (DOX) as model drugs. The results showed that the drug release rate from DDSs in a biomimetic high viscosity solution was 7 to 8 times higher than that in water. A semipermeable membrane model was used to explain the VER effect. The results indicate that the existence of macromolecules in the release medium caused a VER effect. The VER effect found in this study will provide a new concept to guide the design of DDSs in a high viscosity environment in vivo.
Collapse
Affiliation(s)
- Di-Wei Zheng
- Key Laboratory of Biomedical Polymers of Ministry of Education & Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China.
| | | | | | | | | | | |
Collapse
|
263
|
Lee F, Lim J, Reithofer MR, Lee SS, Chung JE, Hauser CAE, Kurisawa M. Synthesis and bioactivity of a conjugate composed of green tea catechins and hyaluronic acid. Polym Chem 2015. [DOI: 10.1039/c5py00495k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An amine-functionalized EGCG dimer was synthesized for the conjugation to HA. The resulting HA–EGCG conjugates could scavenge radicals effectively.
Collapse
Affiliation(s)
- Fan Lee
- Institute of Bioengineering and Nanotechnology
- Singapore
| | - Jaehong Lim
- Institute of Bioengineering and Nanotechnology
- Singapore
| | | | - Su Seong Lee
- Institute of Bioengineering and Nanotechnology
- Singapore
| | - Joo Eun Chung
- Institute of Bioengineering and Nanotechnology
- Singapore
| | | | | |
Collapse
|
264
|
Yang C, Thomsen RP, Ogaki R, Kjems J, Teo BM. Ultrastable green fluorescence carbon dots with a high quantum yield for bioimaging and use as theranostic carriers. J Mater Chem B 2015; 3:4577-4584. [DOI: 10.1039/c5tb00467e] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Green luminescent carbon dots with a high quantum yield and superior stability over a range of pH are synthesised for the first time via a new heating method. The carbon dots can be assembled into defined nanocomplexes as theranostic carriers for doxorubicin delivery.
Collapse
Affiliation(s)
- Chuanxu Yang
- Interdisciplinary Nanoscience Center (iNANO)
- The iNANO House
- Gustav Wieds Vej 14
- Aarhus University
- DK-8000 Aarhus C
| | - Rasmus Peter Thomsen
- Interdisciplinary Nanoscience Center (iNANO)
- The iNANO House
- Gustav Wieds Vej 14
- Aarhus University
- DK-8000 Aarhus C
| | - Ryosuke Ogaki
- Interdisciplinary Nanoscience Center (iNANO)
- The iNANO House
- Gustav Wieds Vej 14
- Aarhus University
- DK-8000 Aarhus C
| | - Jørgen Kjems
- Interdisciplinary Nanoscience Center (iNANO)
- The iNANO House
- Gustav Wieds Vej 14
- Aarhus University
- DK-8000 Aarhus C
| | - Boon M. Teo
- Interdisciplinary Nanoscience Center (iNANO)
- The iNANO House
- Gustav Wieds Vej 14
- Aarhus University
- DK-8000 Aarhus C
| |
Collapse
|