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Zhong Z, Cheng Z, Su D, Xu T, Li X, Wu F. Synthesis, antitumor activity and molecular mechanism of doxorubicin conjugated trimethyl-chitosan polymeric micelle loading Beclin1 siRNA for drug-resisted bladder cancer therapy. RSC Adv 2018; 8:35395-35402. [PMID: 35547901 PMCID: PMC9087860 DOI: 10.1039/c8ra06548a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 08/28/2018] [Indexed: 02/05/2023] Open
Abstract
Herein, we describe a convenient approach for the preparation of a polymeric micelle using doxorubicin (DOX) conjugated trimethyl-chitosan (TMC) with Beclin-1 siRNA (Si-Beclin1/DOX-TMC). This micelle displayed a potent capacity for autophagy inhibition and reversed drug-resistance to DOX in BIU-87/ADR cell lines. The Si-Beclin1/DOX-TMC micelle was highly cytotoxic to both drug-sensitive BIU-87 and drug-resistant BIU-87/ADR cells. Its capacity to reverse drug-resistance was dependent upon upregulation of autophagy levels in BIU-87/ADR cells. DOX was conjugated to TMC via a pH-sensitive Schiff base, which responded to the acidic lysosome microenvironment and resulted in the cytoplasmic release of DOX. The structure of DOX conjugation to the TMC polymeric micelle was characterized by NMR, GPC, TEM and DLS. DOX release profiles in different pH environment were determined by HPLC. Cellular uptake, changes to nuclei morphology and formation of autophagosomes were observed using a fluorescence microscope. Finally, in vivo antitumor activity of systemic Si-Beclin1/DOX-TMC micelle administration was evaluated in BIU-87/ADR xenograft models and Si-Beclin1/DOX-TMC micelles showed significantly suppressed tumor growth. Herein, we describe a convenient approach for the preparation of a polymeric micelle using doxorubicin (DOX) conjugated trimethyl-chitosan (TMC) with Beclin-1 siRNA (Si-Beclin1/DOX-TMC).![]()
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Affiliation(s)
- Zhou Zhong
- Department of Urology and Department of Orthopaedic Surgery
- West China Hospital
- Sichuan University
- Chengdu 610041
- China
| | - Zhong Cheng
- Department of Gastrointestinal Surgery
- West China Hospital
- Sichuan University
- Chengdu 610041
- China
| | - Dongyuan Su
- Department of Gastroenterology
- Chongzhou People's Hospital
- Chengdu 611230
- China
| | - Ting Xu
- Department of Pharmacy
- West China Hospital
- Sichuan University
- Chengdu 610041
- China
| | - Xiang Li
- Department of Urology and Department of Orthopaedic Surgery
- West China Hospital
- Sichuan University
- Chengdu 610041
- China
| | - Fengbo Wu
- Department of Urology and Department of Orthopaedic Surgery
- West China Hospital
- Sichuan University
- Chengdu 610041
- China
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Zhang F, Zhang M, Zheng X, Tao S, Zhang Z, Sun M, Song Y, Zhang J, Shao D, He K, Li J, Yang B, Chen L. Berberine-based carbon dots for selective and safe cancer theranostics. RSC Adv 2018; 8:1168-1173. [PMID: 35540876 PMCID: PMC9076993 DOI: 10.1039/c7ra12069a] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 12/18/2017] [Indexed: 12/14/2022] Open
Abstract
Fluorescent berberine-based carbon dots (Ber–CDs) were prepared through a facile synthesis strategy.
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Li S, Guo Z, Zeng G, Zhang Y, Xue W, Liu Z. Polyethylenimine-Modified Fluorescent Carbon Dots As Vaccine Delivery System for Intranasal Immunization. ACS Biomater Sci Eng 2017; 4:142-150. [PMID: 33418684 DOI: 10.1021/acsbiomaterials.7b00370] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Fluorescent carbon dots (CDs) as a luminescent nanomaterial have obtained much attention in the biomedical field. To make good use of their luminescent property and nanoscaled size, we developed CDs as a vaccine delivery system for intranasal immunization in this work. To this aim, polyethylenimine-modified CDs were prepared via a simple microwave method. Intranasal immunization was performed by using the CDs as an antigen carrier to deliver model protein antigen ovalbumin. The results showed that the CDs as an intranasal vaccine delivery system enhanced the immunization efficacy by significantly increasing IgG titer, IgA induction in the local and distant mucous membrane sites, splenocyte proliferation, cytokine IFN-γ secretion by splenocytes, and memory T cells. From the results, the CDs could be used as vaccine delivery systems with the advantage of tracing the antigen transportation from administration site to the lymph organs.
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Affiliation(s)
- Sha Li
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, No. 601 West Huangpu Avenue, Guangzhou, 510632, China
| | - Zhong Guo
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, No. 601 West Huangpu Avenue, Guangzhou, 510632, China
| | - Guandi Zeng
- Key Laboratory of Functional Protein Research of Guangdong Higher Education Institutes, Institute of Life and Health Engineering, College of Life Science and Technology, Jinan University, No. 601 West Huangpu Avenue, Guangzhou 510632, China
| | - Yu Zhang
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, No. 601 West Huangpu Avenue, Guangzhou, 510632, China
| | - Wei Xue
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, No. 601 West Huangpu Avenue, Guangzhou, 510632, China
| | - Zonghua Liu
- Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Department of Biomedical Engineering, Jinan University, No. 601 West Huangpu Avenue, Guangzhou, 510632, China
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Qiao L, Sun T, Zheng X, Zheng M, Xie Z. Exploring the optimal ratio of d-glucose/l-aspartic acid for targeting carbon dots toward brain tumor cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 85:1-6. [PMID: 29407137 DOI: 10.1016/j.msec.2017.12.011] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 09/07/2017] [Accepted: 12/07/2017] [Indexed: 12/19/2022]
Abstract
Targeting imaging to the desired site of action can increase the accuracy and effectiveness of diagnostic and treatment. In this work, a series of fluorescent carbon dots (CDs) were prepared by varying molar ratios of d-glucose (Glu) to l-aspartic acid (Asp). Their photophysical properties, morphologies and structures were investigated in detail. More important, the targeting ability was screened by confocal laser scanning microscopy and flow cytometry. The results indicate that CDs prepared from the optimal molar ratio of Glu/Asp (7:3) exhibit the highest targeting ability on C6 glioma cells. This work highlights the interplay of molecular design and corresponding functions, and open new possibility of developing state-of-art nanoparticles for biomedical applications.
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Affiliation(s)
- Lihong Qiao
- Advanced Institute of Materials Science, School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun, Jilin 130012, PR China
| | - Tingting Sun
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaohua Zheng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, PR China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Min Zheng
- Advanced Institute of Materials Science, School of Chemistry and Life Science, Changchun University of Technology, 2055 Yanan Street, Changchun, Jilin 130012, PR China.
| | - Zhigang Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin 130022, PR China.
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Chen J, Wang Q, Zhou J, Deng W, Yu Q, Cao X, Wang J, Shao F, Li Y, Ma P, Spector M, Yu J, Xu X. Porphyra polysaccharide-derived carbon dots for non-viral co-delivery of different gene combinations and neuronal differentiation of ectodermal mesenchymal stem cells. NANOSCALE 2017; 9:10820-10831. [PMID: 28726952 DOI: 10.1039/c7nr03327c] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
In this study, multifunctional fluorescent carbon dots (CDs) were synthesized using a one-pot hydrothermal carbonization reaction, with the naturally-occurring porphyra polysaccharide (PPS) serving as a single carbon source for the first time and ethylenediamine (Ed) acting as the surface passivation agent. The resulting CDs enjoyed a high quantum yield (56.3%), excitation-dependent fluorescence, small size (<10 nm), spherical shape, uniform distribution, positive surface charge, low cytotoxicity and excellent ability to condense macromolecular plasmid DNA. The synthesized CDs were employed for neuronal induction from ectodermal mesenchymal stem cells for the first time via highly efficient non-viral gene delivery. The optimal combination of factors (Ascl1 and Brn2) was selected from seven different combinations out of Ascl1, Brn2 and Sox2 according to the expression of neuronal markers (Tuj1, Map2 and Tau). The results of qRT-PCR demonstrated that the CDs possessed a significantly higher transfection efficiency than the commercially available transfection reagents PEI (25 kDa) and Lipofectamine2000. Moreover, the CDs/pDNA nanoparticles exhibited more efficient neuronal differentiation of the EMSCs than the AT-RA-containing induction medium. Furthermore, the CDs/pDNA nanoparticles could enter cells via both caveolae- and clathrin-mediated endocytosis. Taken together, the natural polysaccharide PPS-derived CDs enriched the current application of CDs by employing the CDs as a novel non-viral gene carrier for neuronal differentiation of adult stem cells, which held great promise in tissue engineering and bioimaging.
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Affiliation(s)
- Jiaxin Chen
- Department of Pharmaceutics, School of Pharmacy, and Center for Drug/Gene Delivery and Tissue Engineering, Jiangsu University, Zhenjiang 212001, P.R. China.
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