51
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Recent Advances of Gold Nanoparticles in Biomedical Applications: State of the Art. Cell Biochem Biophys 2018; 77:123-137. [DOI: 10.1007/s12013-018-0863-4] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 12/08/2018] [Indexed: 12/31/2022]
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52
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Ghamkhari A, Ghorbani M, Aghbolaghi S. A perfect stimuli-responsive magnetic nanocomposite for intracellular delivery of doxorubicin. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2018; 46:S911-S921. [PMID: 30307331 DOI: 10.1080/21691401.2018.1518911] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Iron oxide nanoparticles (IONs) have been extensively applied in cancer therapy and theranostics due to their admissible magnetic properties, excellent chemical stability and biocompatibility. Herein, a novel stimuli-responsive magnetic nanocomposite was synthesized for cancer therapy; thereby, the triblock copolymer of poly[(2-succinyloxyethylmethacrylate)-b-(N-isopropylacrylamide)-b-dimethylaminoethylmethacrylate) [poly(SEMA-b-NIPAM-b-DMAEMA)] was prepared by reversible addition of fragmentation chain transfer (RAFT) polymerization. This triblock copolymer with carboxylic groups of succinyloxyethylmethacrylate was adsorbed onto the surface of Fe3O4 nanoparticles. The morphology, nanocomposite properties and stimuli-responsive behaviours were investigated by field emission scanning electron microscopy, X-ray diffraction, dynamic light scattering, vibrating sample magnetometer (VSM) and thermogravimetric analysis. Doxorubicin (DOX) encapsulation efficacy was 94.3%. Release behaviours of DOX from the magnetic nanocomposite exhibited that the rate of DOX release could be efficiently controlled through temperature and pH. The cytotoxicity of the drug was investigated in vitro against breast cancer cell line (MCF7) using (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) (MTT) assays, 4',6-diamidino-2-phenylindole (DAPI) staining and cellular uptake. In conclusion, the synthesized DOX@nanocomposite can be applied in theranostic applications and anticancer drug delivery owing to admissible properties.
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Affiliation(s)
- Aliyeh Ghamkhari
- a Yong Researchers and Elite Club , Islamic Azad University , Jolfa , Iran
| | - Marjan Ghorbani
- b Stem Cell Research Center , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Samira Aghbolaghi
- c Chemical Engineering Department, Faculty of Engineering , Azarbaijan Shahid Madani University , Tabriz , Iran
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Trimodal synergistic antitumor drug delivery system based on graphene oxide. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 15:142-152. [PMID: 30300749 DOI: 10.1016/j.nano.2018.09.008] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Revised: 09/18/2018] [Accepted: 09/24/2018] [Indexed: 12/23/2022]
Abstract
A multifunctional antitumor drug delivery system was synthesized based on graphene oxide (GO) for near-infrared (NIR) light controlling chemotherapeutic/photothermal (PTT) /photodynamic (PDT) trimodal synergistic therapy. The system named ICG-Wed-GO was formed by co-loading wedelolactone (Wed) and indocyanine green (ICG) on the surface of GO through π-π stacking interaction. Under NIR laser irradiation, ICG-Wed-GO could effectively absorb and transform optical energy to heat, generate reactive oxygen species (ROS) to ablating and damage tumor cells. The temperature of ICG-Wed-GO solution reached up to 79.4 °C in 10 min with NIR irradiation. In in vitro and in vivo study, ICG-Wed-GO showed excellent antitumor effect. After 14-day treatment of ICG-Wed-GO with NIR laser irradiation, the tumor disappeared completely on tumor-bearing mice. The low biotoxicity of ICG-Wed-GO was also proved. The system achieved the synergistic trimodal chemotherapeutic/photothermal/photodynamic treatment and demonstrated excellent antitumor effect, which is expected to have a greater potential for cancer therapy.
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54
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Controlled construction of gold nanoparticles in situ from β-cyclodextrin based unimolecular micelles for in vitro computed tomography imaging. J Colloid Interface Sci 2018; 528:135-144. [DOI: 10.1016/j.jcis.2018.05.082] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 05/14/2018] [Accepted: 05/22/2018] [Indexed: 11/17/2022]
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55
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Lorson T, Lübtow MM, Wegener E, Haider MS, Borova S, Nahm D, Jordan R, Sokolski-Papkov M, Kabanov AV, Luxenhofer R. Poly(2-oxazoline)s based biomaterials: A comprehensive and critical update. Biomaterials 2018; 178:204-280. [DOI: 10.1016/j.biomaterials.2018.05.022] [Citation(s) in RCA: 204] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 02/06/2023]
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56
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Liu X, Fan X, Jiang L, Loh XJ, Wu YL, Li Z. Biodegradable polyester unimolecular systems as emerging materials for therapeutic applications. J Mater Chem B 2018; 6:5488-5498. [PMID: 32254961 DOI: 10.1039/c8tb01883a] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Unimolecular micelles, as a class of single-molecular micelles, are structurally stable regardless of their concentrations or alterations of the outer environment such as pH, temperature, ion strength etc. in comparison with conventional polymeric micelles. Polyester unimolecular micelles are extensively applied in bio-medical fields because of their stability, biocompatibility, biodegradability, structural-controllabilty etc. In this review, the most recent developments in polyester unimolecular micelle designs in terms of Boltorn polymer H40 core, cyclodextrin, dendrimer or dendrimer-like polymer, or polyhedral oligomeric silsesquioxane (POSS) based polyester unimolecular micelles are presented. The significance and application in biomedical fields including drug delivery, bio-imaging and theranostics are also classified in this review. Finally, the remaining challenges and future perspectives for further development of unimolecular micelles as therapeutic materials are also discussed.
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Affiliation(s)
- Xuan Liu
- School of Pharmaceutical Sciences, Xiamen University, Xiamen 361102, P. R. China.
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57
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Uthaman S, Huh KM, Park IK. Tumor microenvironment-responsive nanoparticles for cancer theragnostic applications. Biomater Res 2018; 22:22. [PMID: 30155269 PMCID: PMC6108142 DOI: 10.1186/s40824-018-0132-z] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2018] [Accepted: 08/02/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Cancer is one of the deadliest threats to human health. Abnormal physiochemical conditions and dysregulated biosynthetic intermediates in the tumor microenvironment (TME) play a significant role in modulating cancer cells to evade or defend conventional anti-cancer therapy such as surgery, chemotherapy and radiotherapy. One of the most important challenges in the development of anti-tumor therapy is the successful delivery of therapeutic and imaging agents specifically to solid tumors. MAIN BODY The recent progresses in development of TME responsive nanoparticles offers promising strategies for combating cancer by making use of the common attributes of tumor such as acidic and hypoxic microenvironments. In this review, we discussed the prominent strategies utilized in the development of tumor microenvironment-responsive nanoparticles and mode of release of therapeutic cargo. CONCLUSION Tumor microenvironment-responsive nanoparticles offers a universal approach for anti-cancer therapy.
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Affiliation(s)
- Saji Uthaman
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134 Republic of Korea
| | - Kang Moo Huh
- Department of Polymer Science and Engineering, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 34134 Republic of Korea
| | - In-Kyu Park
- Department of Biomedical Sciences, BK21 PLUS Centre for Creative Biomedical Scientists, Chonnam National University Medical School, 160 Baekseo-ro, Gwangju, 61469 Republic of Korea
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58
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Mani G, Kim S, Kim K. Development of Folate-Thioglycolate-Gold Nanoconjugates by Using Citric Acid-PEG Branched Polymer for Inhibition of MCF-7 Cancer Cell Proliferation. Biomacromolecules 2018; 19:3257-3267. [PMID: 29979877 DOI: 10.1021/acs.biomac.8b00543] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Development of folate (FA)-functionalized gold nanoparticles (AuNPs) has greatly increased in recent years due to their potential in cancer treatment. As surface functionalization of polymer-free AuNPs with thiol groups could result in agglomeration and precipitation, AuNPs should be stabilized with an efficient polymer. In this study, citric acid-PEG branched polymer (CPEG) acted as a reducing as well as stabilizing agent in the synthesis of AuNPs. The thiol group of thioglycolic acid (TGA) attached to CPEG-stabilized AuNPs and interacted with the free carboxylic acid group on the surface of TGA-AuNP nanoconjugates. Stable TGA-AuNP nanoconjugates were obtained only with CPEG-stabilized AuNPs and not with citrate-stabilized AuNPs. The carboxylic acid group on the surface of AuNPs was used to attach FA via an EDC/NHS coupling reaction to obtain FA-TGA-AuNP nanoconjugates. In vitro cytotoxicity studies indicated that FA-TGA-AuNPs were not toxic to normal cells up to a concentration of 200 μg/mL. However, FA-TGA-AuNP nanoconjugates effectively inhibited proliferation of MCF-7 cancer cells at a low concentration of 25 μg/mL after 3 days of incubation. The anticancer activity of FA-TGA-AuNPs was enhanced by incorporating the anticancer drug 5-fluorouracil into the nanoconjugates, which exhibited sustained drug release up to 5 days. Hence, the developed biocompatible FA-TGA-AuNPs could be used for specific killing of breast cancer cells.
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Affiliation(s)
- Gajendiran Mani
- Division of Bioengineering, School of Life Sciences and Bioengineering , Incheon National University , Incheon , Korea 22012
| | - Sungjun Kim
- Division of Bioengineering, School of Life Sciences and Bioengineering , Incheon National University , Incheon , Korea 22012
| | - Kyobum Kim
- Division of Bioengineering, School of Life Sciences and Bioengineering , Incheon National University , Incheon , Korea 22012
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59
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Cheng H, Fan X, Wu C, Wang X, Wang LJ, Loh XJ, Li Z, Wu YL. Cyclodextrin-Based Star-Like Amphiphilic Cationic Polymer as a Potential Pharmaceutical Carrier in Macrophages. Macromol Rapid Commun 2018; 40:e1800207. [PMID: 29806229 DOI: 10.1002/marc.201800207] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2018] [Revised: 04/23/2018] [Indexed: 02/05/2023]
Abstract
Effective delivery of therapeutic genes or small molecular drugs into macrophages is important for cell based immune therapy, but it remains a challenge due to the intracellular reactive oxygen species and endosomal degradation of therapeutics inside immune cells. In this report, the star-like amphiphilic biocompatible β-cyclodextrin-graft-(poly(ε-caprolactone)-block-poly(2-(dimethylamino) ethyl methacrylate)x (β-CD-g-(PCL-b-PDMAEMA)x ) copolymer, consisting of a biocompatible cyclodextrin core, hydrophobic poly(ε-caprolactone) PCL segments and hydrophilic PDMAEMA blocks with positive charge, is optimized to achieve high efficiency gene transfection with enhanced stability, due to the micelle formation by hydrophobic PCL segments. In comparison with lipofetamine, a currently popular nonviral gene carrier, β-CD-g-(PCL-b-PDMAEMA)x copolymer, shows better transfection efficiency of plasmid desoxyribose nucleic acid in RAW264.7 macrophages. More interestingly, this delivery platform by β-CD-g-(PCL-b-PDMAEMA)x not only shows low toxicity but also better dexamethasone delivery efficiency, which might indicate its great potential in immunotherapy.
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Affiliation(s)
- Hongwei Cheng
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Xiaoshan Fan
- Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Caisheng Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Xiaoyuan Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Li-Juan Wang
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361102, China
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60
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Qu J, Zhao X, Ma PX, Guo B. Injectable antibacterial conductive hydrogels with dual response to an electric field and pH for localized "smart" drug release. Acta Biomater 2018; 72:55-69. [PMID: 29555459 DOI: 10.1016/j.actbio.2018.03.018] [Citation(s) in RCA: 239] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Revised: 02/25/2018] [Accepted: 03/07/2018] [Indexed: 12/28/2022]
Abstract
Injectable hydrogels with multistimuli responsiveness to electrical field and pH as a drug delivery system have been rarely reported. Herein, we developed a series of injectable conductive hydrogels as "smart" drug carrier with the properties of electro-responsiveness, pH-sensitivity, and inherent antibacterial activity. The hydrogels were prepared by mixing chitosan-graft-polyaniline (CP) copolymer and oxidized dextran (OD) as a cross-linker. The chemical structures, morphologies, electrochemical property, swelling ratio, conductivity, rheological property, in vitro and in vivo biodegradation, and gelation time of hydrogels were characterized. The pH-responsive behavior was verified by drug release from hydrogels in PBS solutions with different pH values (pH = 7.4 or 5.5) in an in vitro model. As drug carriers with electric-driven release, the release rate of the model drugs amoxicillin and ibuprofen loaded within CP/OD hydrogels dramatically increased when an increase in voltage was applied. Both chitosan and polyaniline with inherent antibacterial properties endowed the hydrogels with excellent antibacterial properties. Furthermore, cytotoxicity tests of the hydrogels using L929 cells confirmed their good cytocompatibility. The in vivo biocompatibility of the hydrogels was verified by H&E staining. Together, all these results suggest that these injectable pH-sensitive conductive hydrogels with antibacterial activity could be ideal candidates as smart drug delivery vehicles for precise doses of medicine to meet practical demand. STATEMENT OF SIGNIFICANCE Stimuli-responsive or "smart" hydrogels have attracted great attention in the field of biotechnology and biomedicine, especially on designing novel drug delivery systems. Compared with traditional implantable electronic delivery devices, the injectable hydrogels with electrical stimuli not only are easy to generate and control electrical field but also could avoid frequent invasive surgeries that offer a new avenue for chronic diseases. In addition, designing a drug carrier with pH-sensitive property could release drug efficiently in targeted acid environment, and it could reinforce the precise doses of medicine. Furthermore, caused by opportunistic microorganisms and rapid spread of antibiotic-resistant microbes, infection is still a serious threat for many clinical utilities. To overcome these barriers, we designed a series of injectable antibacterial conductive hydrogels based on chitosan-graft-polyaniline (CP) copolymer and oxidized dextran (OD), and we demonstrated their potential as "smart" delivery vehicles with electro-responsiveness and pH-responsive properties for triggered and localized release of drugs.
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61
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Su Y, Wang K, Li Y, Song W, Xin Y, Zhao W, Tian J, Ren L, Lu L. Sorafenib-loaded polymeric micelles as passive targeting therapeutic agents for hepatocellular carcinoma therapy. Nanomedicine (Lond) 2018; 13:1009-1023. [PMID: 29630448 DOI: 10.2217/nnm-2018-0046] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIM The clinical application of sorafenib is limited because of its hydrophobicity, low bioavailability and unsatisfying treatment effect. Therefore, sorafenib-loaded PEG-poly (ε-caprolactone) micelles (SF micelles) were fabricated for sorafenib delivery. MATERIALS & METHODS In vitro assays investigated the solubility, dispersity, stability, cytotoxicity and uptake capacity of SF micelles. In vivo biodistribution and therapeutic effects were studied using HepG2-Luc tumor-bearing mice. RESULTS SF micelles had a regular spherical structure with good water solubility. In vivo imaging results showed PEG-poly (ε-caprolactone) micelles could elevate the sorafenib concentration in tumor tissues. Meanwhile, SF micelles exhibited higher tumor growth inhibition in vivo. CONCLUSION SF micelles might be a potential drug delivery system, which could enhance the therapeutic effects of sorafenib.
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Affiliation(s)
- Yanhong Su
- School of Medicine, South China University of Technology, Guangzhou 510006, China.,Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital, Zhuhai 519000, China.,CAS Key Laboratory of Molecular Imaging, The State Key Laboratory of Management & Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
| | - Kun Wang
- CAS Key Laboratory of Molecular Imaging, The State Key Laboratory of Management & Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Li
- Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital, Zhuhai 519000, China
| | - Wenjing Song
- School of Materials Science & Engineering, South China University of Technology, Guangzhou 510641, China
| | - Yongjie Xin
- Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital, Zhuhai 519000, China
| | - Wei Zhao
- Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital, Zhuhai 519000, China
| | - Jie Tian
- CAS Key Laboratory of Molecular Imaging, The State Key Laboratory of Management & Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China.,School of Artificial Intelligence, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Ren
- School of Medicine, South China University of Technology, Guangzhou 510006, China.,School of Materials Science & Engineering, South China University of Technology, Guangzhou 510641, China
| | - Ligong Lu
- School of Medicine, South China University of Technology, Guangzhou 510006, China.,Center of Intervention Radiology, Zhuhai Precision Medicine Center, Zhuhai People's Hospital, Zhuhai 519000, China
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Delivery of anticancer drug using pH-sensitive micelles from triblock copolymer MPEG-b-PBAE-b-PLA. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018. [DOI: 10.1016/j.msec.2017.12.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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63
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Xiong D, Zhang X, Peng S, Gu H, Zhang L. Smart pH-sensitive micelles based on redox degradable polymers as DOX/GNPs carriers for controlled drug release and CT imaging. Colloids Surf B Biointerfaces 2018; 163:29-40. [DOI: 10.1016/j.colsurfb.2017.12.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 11/29/2017] [Accepted: 12/07/2017] [Indexed: 12/21/2022]
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64
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Kang Y, Lu L, Lan J, Ding Y, Yang J, Zhang Y, Zhao Y, Zhang T, Ho RJ. Redox-responsive polymeric micelles formed by conjugating gambogic acid with bioreducible poly(amido amine)s for the co-delivery of docetaxel and MMP-9 shRNA. Acta Biomater 2018; 68:137-153. [PMID: 29288085 DOI: 10.1016/j.actbio.2017.12.028] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Revised: 12/04/2017] [Accepted: 12/19/2017] [Indexed: 12/13/2022]
Abstract
A novel redox-sensitive system for co-delivering hydrophobic drugs and hydrophilic siRNA or shRNA was developed by conjugating gambogic acid (GA) with poly(amido amine)s (PAAs) through amide bonds, which is called GA-conjugated PAAs (PAG). PAG can self-assemble into micelles as amphiphilic block copolymers, which exhibits an excellent loading ability for the co-delivery of docetaxel (DTX) and MMP-9 shRNA with adjustable dosing ratios. In addition, confocal microscopy, flow cytometry and in vitro transfection analyses demonstrated more efficient cellular internalization of DTX and MMP-9 shRNA after incubation with PAG/DTX- MMP-9 shRNA micelles (PAG/DTX-shRNA) than with free drugs. Unlike traditional amphiphilic copolymer micelles, GA conjugated in PAG possesses an intrinsic anticancer efficacy. The presence of disulfide bonds in PAAs enables rapid disassembly of PAG micelles in response to reducing agents, inducing the release of loaded drugs (DTX, GA and MMP-9 shRNA). In vitro cellular assays revealed that PAG/DTX-shRNA micelles inhibited MCF-7 cell proliferation more efficiently than the single drug or single drug-loaded micelles. In vivo biodistribution and anti-tumor effect studies using an MCF-7 breast cancer xenograft mouse model have indicated that PAG/DTX-shRNA micelles can enhance drug accumulation compared with the free drug, thereby sustaining the therapeutic effect on tumors. Additionally, PAG/DTX-shRNA micelles displayed a greater anti-tumor efficacy than Taxotere® and PAG-shRNA micelles. These results suggest that the redox-sensitive PAG platform is a promising co-delivery system for combining drugs and gene therapy for the treatment of cancer. STATEMENT OF SIGNIFICANCE The PAG micelles were designed by conjugating gambogic acid (GA) with poly(amido amine)s (PAAs), which would serve dual purposes as both gene and drugs co-delivery carrier and an anti-tumor prodrug. Unlike traditional amphiphilic micelles, GA conjugated in PAG could exert its intrinsic efficacy and provide synergistic antiproliferative effects with docetaxel (DTX) on MCF-7 cells. Disulfide bonds in PAG enables a rapid disassembly of PAG micelles in response to reducing agents and to release all loaded drugs (DTX, GA and MMP-9 shRNA) at tumor sites. PAG/DTX-shRNA micelles displayed greater anti-tumor efficacy than that of Taxotere®, indicating the design concept for PAG works well. And the strategy for PAG could be used to develop a series of similar co-delivery systems through conjugations of other small-molecule drugs with PAAs, such as doxorubicin, methotrexate and other drugs with carboxy groups in their structure.
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65
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Jin X, Sun P, Tong G, Zhu X. Star polymer-based unimolecular micelles and their application in bio-imaging and diagnosis. Biomaterials 2018; 178:738-750. [PMID: 29429845 DOI: 10.1016/j.biomaterials.2018.01.051] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 01/27/2018] [Accepted: 01/29/2018] [Indexed: 12/12/2022]
Abstract
As a novel kind of polymer with covalently linked core-shell structure, star polymers behave in nanostructure in aqueous medium at all concentration range, as unimolecular micelles at high dilution condition and multi-micelle aggregates in other situations. The unique morphologies endow star polymers with excellent stability and functions, making them a promising platform for bio-application. A variety of functions including imaging and therapeutics can be achieved through rational structure design of star polymers, and the existence of plentiful end-groups on shell offers the opportunity for further modification. In the last decades, star polymers have become an attracting platform on fabrication of novel nano-systems for bio-imaging and diagnosis. Focusing on the specific topology and physicochemical properties of star polymers, we have reviewed recent development of star polymer-based unimolecular micelles and their bio-application in imaging and diagnosis. The main content of this review summarizes the synthesis of integrated architecture of star polymers and their self-assembly behavior in aqueous medium, focusing especially on the recent advances on their bio-imaging application and diagnosis use. Finally, we conclude with remarks and give some outlooks for further exploration in this field.
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Affiliation(s)
- Xin Jin
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Pei Sun
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Gangsheng Tong
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
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66
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Shagan A, Croitoru-Sadger T, Corem-Salkmon E, Mizrahi B. Near-Infrared Light Induced Phase Transition of Biodegradable Composites for On-Demand Healing and Drug Release. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4131-4139. [PMID: 29280624 DOI: 10.1021/acsami.7b17481] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Light responsive materials play an important role in many biomedical applications. Despite the great potential, commonly available systems are limited by their toxicity and lack of biodegradability. Here, an efficient light triggered system from safe, biodegradable star-poly(ethylene glycol) (star-PEG) and poly(ε-caprolactone) (PCL) with varying melting points controlled by the length of the CL segments is described. When incorporated with gold nanoshells (GNS) and exposed to near-infrared (NIR) irradiation, matrices temporarily disengage, thus allowing efficient on-demand healing and drug release. The responsiveness of this system to light, with its tailorable physical and healing properties, biocompatibility, biodegradability, and the capability to incorporate drugs and on-demand drug release are all desirable traits for numerous clinical applications.
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Affiliation(s)
- Alona Shagan
- Faculty of Biotechnology and Food Engineering, Technion , Haifa 32000, Israel
| | | | - Enav Corem-Salkmon
- Faculty of Biotechnology and Food Engineering, Technion , Haifa 32000, Israel
| | - Boaz Mizrahi
- Faculty of Biotechnology and Food Engineering, Technion , Haifa 32000, Israel
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Zhang J, Tang H, Liu Z, Chen B. Effects of major parameters of nanoparticles on their physical and chemical properties and recent application of nanodrug delivery system in targeted chemotherapy. Int J Nanomedicine 2017; 12:8483-8493. [PMID: 29238188 PMCID: PMC5713688 DOI: 10.2147/ijn.s148359] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Chemotherapy is still one of the main cancer therapy treatments, but the curative effect of chemotherapy is relatively low, as such the development of a new cancer treatment is highly desirable. The gradual maturation of nanotechnology provides an innovative perspective not only for cancer therapy but also for many other applications. There are a diverse variety of nanoparticles available, and choosing the appropriate carriers according to the demand is the key issue. The performance of nanoparticles is affected by many parameters, mainly size, shape, surface charge, and toxicity. Using nanoparticles as the carriers to realize passive targeting and active targeting can improve the efficacy of chemotherapy drugs significantly, reduce the mortality rate of cancer patients, and improve the quality of life of patients. In recent years, there has been extensive research on nanocarriers. In this review, the effects of several major parameters of nanoparticles on their physical and chemical properties are reviewed, and then the recent progress in the application of several commonly used nanoparticles is presented.
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Affiliation(s)
- Jing Zhang
- Department of Hematology and Oncology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing
| | - Hua Tang
- Department of Hematology, People's Hospital of Xinghua City, Xinghua City, Jiangsu Province, People's Republic of China
| | - Zefa Liu
- Department of Hematology, People's Hospital of Xinghua City, Xinghua City, Jiangsu Province, People's Republic of China
| | - Baoan Chen
- Department of Hematology and Oncology, Zhongda Hospital, School of Medicine, Southeast University, Nanjing
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