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Wong KH, Guo Z, Law MK, Chen M. Functionalized PAMAM constructed nanosystems for biomacromolecule delivery. Biomater Sci 2023; 11:1589-1606. [PMID: 36692071 DOI: 10.1039/d2bm01677j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Polyamidoamines (PAMAMs) are a class of dendrimer with monodispersity and controlled topology, which can deliver biologically active macromolecules (e.g., genes and proteins) to specific regions with high efficiency and minimum side effects. In detail, PAMAMs can be functionalized easily by core modification or surface amendment to encapsulate a wide range of biomacromolecules. Besides, self-assembled, cross-linked and hybrid PAMAMs with customized therapeutic purposes are developed as delivery vehicles, which makes PAMAMs promising for biomacromolecule therapy. In this review, we comprehensively summarize the application of PAMAMs in biomacromolecule delivery from the synthesis of functionalized PAMAM carriers to the development of PAMAM-based drug delivery systems. The underlying strategies for PAMAM functionalization and assembly are first systematically discussed, and then the current applications of PAMAMs for biomacromolecule delivery are reviewed. Finally, a brief perspective on the further applications of PAMAMs concludes, aiming to provide insights into developing PAMAM-based biomacromolecule delivery systems.
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Affiliation(s)
- Ka Hong Wong
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
| | - Zhaopei Guo
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
| | - Man-Kay Law
- State Key Laboratory of Analog and Mixed-Signal VLSI, IME and FST-ECE, University of Macau, Macau SAR, China
| | - Meiwan Chen
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macau SAR, China.
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2
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miRNA Delivery by Nanosystems: State of the Art and Perspectives. Pharmaceutics 2021; 13:pharmaceutics13111901. [PMID: 34834316 PMCID: PMC8619868 DOI: 10.3390/pharmaceutics13111901] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 10/25/2021] [Accepted: 11/04/2021] [Indexed: 01/09/2023] Open
Abstract
MicroRNAs (miRNAs) are short (~21-23 nucleotides), non-coding endogenous RNA molecules that modulate gene expression at the post-transcriptional level via the endogenous RNA interference machinery of the cell. They have emerged as potential biopharmaceuticals candidates for the treatment of various diseases, including cancer, cardiovascular and metabolic diseases. However, in order to advance miRNAs therapeutics into clinical settings, their delivery remains a major challenge. Different types of vectors have been investigated to allow the delivery of miRNA in the diseased tissue. In particular, non-viral delivery systems have shown important advantages such as versatility, low cost, easy fabrication and low immunogenicity. Here, we present a general overview of the main types of non-viral vectors developed for miRNA delivery, with their advantages, limitations and future perspectives.
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3
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Han J, Iimure Y, Okamoto Y, Suga K, Umakoshi H. Structure and Properties Characterization of Amphiphilic Dendrons Modified Lipid Membrane. CHEM LETT 2021. [DOI: 10.1246/cl.200633] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jin Han
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Yosuke Iimure
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Yukihiro Okamoto
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
| | - Keishi Suga
- Department of Chemical Engineering, Graduate School of Engineering, Tohoku University, 6-6-07 Aoba, Aramaki-aza, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Hiroshi Umakoshi
- Division of Chemical Engineering, Graduate School of Engineering Science, Osaka University, 1-3 Machikaneyama-cho, Toyonaka, Osaka 560-8531, Japan
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4
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A review on synthesis and applications of dendrimers. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-02053-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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5
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Ashrafizadeh M, Hushmandi K, Rahmani Moghadam E, Zarrin V, Hosseinzadeh Kashani S, Bokaie S, Najafi M, Tavakol S, Mohammadinejad R, Nabavi N, Hsieh CL, Zarepour A, Zare EN, Zarrabi A, Makvandi P. Progress in Delivery of siRNA-Based Therapeutics Employing Nano-Vehicles for Treatment of Prostate Cancer. Bioengineering (Basel) 2020; 7:E91. [PMID: 32784981 PMCID: PMC7552721 DOI: 10.3390/bioengineering7030091] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/31/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023] Open
Abstract
Prostate cancer (PCa) accounts for a high number of deaths in males with no available curative treatments. Patients with PCa are commonly diagnosed in advanced stages due to the lack of symptoms in the early stages. Recently, the research focus was directed toward gene editing in cancer therapy. Small interfering RNA (siRNA) intervention is considered as a powerful tool for gene silencing (knockdown), enabling the suppression of oncogene factors in cancer. This strategy is applied to the treatment of various cancers including PCa. The siRNA can inhibit proliferation and invasion of PCa cells and is able to promote the anti-tumor activity of chemotherapeutic agents. However, the off-target effects of siRNA therapy remarkably reduce its efficacy in PCa therapy. To date, various carriers were designed to improve the delivery of siRNA and, among them, nanoparticles are of importance. Nanoparticles enable the targeted delivery of siRNAs and enhance their potential in the downregulation of target genes of interest. Additionally, nanoparticles can provide a platform for the co-delivery of siRNAs and anti-tumor drugs, resulting in decreased growth and migration of PCa cells. The efficacy, specificity, and delivery of siRNAs are comprehensively discussed in this review to direct further studies toward using siRNAs and their nanoscale-delivery systems in PCa therapy and perhaps other cancer types.
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Affiliation(s)
- Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz 5166616471, Iran;
| | - Kiavash Hushmandi
- Department of Food Hygiene and Quality Control, Division of Epidemiology & Zoonoses, Faculty of Veterinary Medicine, University of Tehran, Tehran 1419963114, Iran; (K.H.); (S.B.)
| | - Ebrahim Rahmani Moghadam
- Department of Anatomical Sciences, School of Medicine, Student Research Committee, Shiraz University of Medical Sciences, Shiraz 7134814336, Iran;
| | - Vahideh Zarrin
- Laboratory for Stem Cell Research, Shiraz University of Medical Sciences, Shiraz 7134814336, Iran;
| | | | - Saied Bokaie
- Department of Food Hygiene and Quality Control, Division of Epidemiology & Zoonoses, Faculty of Veterinary Medicine, University of Tehran, Tehran 1419963114, Iran; (K.H.); (S.B.)
| | - Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran;
| | - Shima Tavakol
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran 1449614525, Iran;
| | - Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kermaan 55425147, Iran;
| | - Noushin Nabavi
- Research Services, University of Victoria, Victoria, BC V8W 2Y2, Canada;
| | - Chia-Ling Hsieh
- Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei City 110, Taiwan;
| | - Atefeh Zarepour
- Department of Biotechnology, Faculty of Biological Science and Technology, University of Isfahan, Isfahan 8174673441, Iran;
| | | | - Ali Zarrabi
- Sabanci University Nanotechnology Research and Application Center (SUNUM), Tuzla, Istanbul 34956, Turkey
- Center of Excellence for Functional Surfaces and Interfaces (EFSUN), Faculty of Engineering and Natural Sciences, Sabanci University, Tuzla, Istanbul 34956, Turkey
| | - Pooyan Makvandi
- Istituto Italiano di Tecnologia, Centre for Micro-BioRobotics, viale Rinaldo Piaggio 34, 56025 Pontedera, Pisa, Italy
- Chemistry Department, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz 61537-53843, Iran
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6
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Bholakant R, Qian H, Zhang J, Huang X, Huang D, Feijen J, Zhong Y, Chen W. Recent Advances of Polycationic siRNA Vectors for Cancer Therapy. Biomacromolecules 2020; 21:2966-2982. [DOI: 10.1021/acs.biomac.0c00438] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Raut Bholakant
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
| | - Hongliang Qian
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
| | - Junmei Zhang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
| | - Xin Huang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
| | - Dechun Huang
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
| | - Jan Feijen
- Department of Polymer Chemistry and Biomaterials, Faculty of Science and Technology, TECHMED Centre, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Yinan Zhong
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
| | - Wei Chen
- Department of Pharmaceutical Engineering, School of Engineering, China Pharmaceutical University, Nanjing 210009, PR China
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7
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Warryn L, Dangy JP, Gersbach P, Gehringer M, Schäfer A, Ruf MT, Ruggli N, Altmann KH, Pluschke G. Development of an ELISA for the quantification of mycolactone, the cytotoxic macrolide toxin of Mycobacterium ulcerans. PLoS Negl Trop Dis 2020; 14:e0008357. [PMID: 32589646 PMCID: PMC7347236 DOI: 10.1371/journal.pntd.0008357] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 07/09/2020] [Accepted: 05/04/2020] [Indexed: 01/04/2023] Open
Abstract
Mycolactones, macrolide cytotoxins, are key virulence factors of Mycobacterium ulcerans, the etiological agent of the chronic necrotizing skin disease Buruli ulcer. There is urgent need for a simple point-of-care laboratory test for Buruli ulcer and mycolactone represents a promising target for the development of an immunological assay. However, for a long time, all efforts to generate mycolactone-specific antibodies have failed. By using a protein conjugate of a truncated non-toxic synthetic mycolactone derivative, we recently described generation of a set of mycolactone-specific monoclonal antibodies. Using the first mycolactone-specific monoclonal antibodies that we have described before, we were able to develop an antigen competition assay that detects mycolactones. By the systematic selection of a capturing antibody and a reporter molecule, and the optimization of assay conditions, we developed an ELISA that detects common natural variants of mycolactone with a limit of detection in the low nanomolar range. The mycolactone-specific ELISA described here will be a very useful tool for research on the biology of this macrolide toxin. After conversion into a simple point-of-care test format, the competition assay may have great potential as laboratory assay for both the diagnosis of Buruli ulcer and for the monitoring of treatment efficacy.
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Affiliation(s)
- Louisa Warryn
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Jean-Pierre Dangy
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Philipp Gersbach
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Matthias Gehringer
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Anja Schäfer
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Marie-Thérèse Ruf
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
| | - Nicolas Ruggli
- The Institute of Virology and Immunology IVI, Mittelhäusern, Switzerland
| | - Karl-Heinz Altmann
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Zürich, Switzerland
| | - Gerd Pluschke
- Swiss Tropical and Public Health Institute, Basel, Switzerland
- University of Basel, Basel, Switzerland
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8
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Liaw K, Zhang F, Mangraviti A, Kannan S, Tyler B, Kannan RM. Dendrimer size effects on the selective brain tumor targeting in orthotopic tumor models upon systemic administration. Bioeng Transl Med 2020; 5:e10160. [PMID: 32440565 PMCID: PMC7237147 DOI: 10.1002/btm2.10160] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 03/26/2020] [Accepted: 04/03/2020] [Indexed: 12/14/2022] Open
Abstract
Malignant gliomas are the most common and aggressive form of primary brain tumors, with a median survival of 15-20 months for patients receiving maximal interventions. Advances in nanomedicine have provided tumor-specific delivery of chemotherapeutics to potentially overcome their off-target toxicities. Recent advances in dendrimer-based nanomedicines have established that hydroxyl-terminated poly(amidoamine) dendrimers can intrinsically target neuroinflammation and brain tumors from systemic administration without the need for targeting moieties. The size of nanocarriers is a critical parameter that determines their tumor-targeting efficiency, intratumor distribution, and clearance mechanism. In this study, we explore the dendrimer size effects on brain tumor targeting capability in two clinically relevant orthotopic brain tumor models, the 9L rat and GL261 mouse models, which capture differing aspects of gliomas. We show that increasing dendrimers from Generation 4 to Generation 6 significantly enhances their tumor accumulation (~10-fold greater at 24 hr), tumor specificity (~2-3 fold higher), and tumor retention. The superior tumor targeting effect of G6 dendrimers is associated with its reduced renal clearance rate, resulting in longer circulation time compared to G4 dendrimers. Additionally, the increase in dendrimer generation does not compromise its homogeneous tumor distribution and intrinsic targeting of tumor-associated macrophages. These results validate the potential for these dendrimers as an effective, clinically translatable platform for effectively targeting tumor-associated macrophages in malignant gliomas.
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Affiliation(s)
- Kevin Liaw
- Center for NanomedicineWilmer Eye Institute, Johns Hopkins School of MedicineBaltimoreMarylandUSA
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
| | - Fan Zhang
- Center for NanomedicineWilmer Eye Institute, Johns Hopkins School of MedicineBaltimoreMarylandUSA
- Department of Materials Science and EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
| | | | - Sujatha Kannan
- Department of Anesthesiology and Critical Care MedicineJohns Hopkins School of MedicineBaltimoreMarylandUSA
| | - Betty Tyler
- Department of NeurosurgeryJohns Hopkins School of MedicineBaltimoreMarylandUSA
| | - Rangaramanujam M. Kannan
- Center for NanomedicineWilmer Eye Institute, Johns Hopkins School of MedicineBaltimoreMarylandUSA
- Department of Chemical and Biomolecular EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
- Department of Materials Science and EngineeringJohns Hopkins UniversityBaltimoreMarylandUSA
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9
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Dong Y, Chen Y, Zhu D, Shi K, Ma C, Zhang W, Rocchi P, Jiang L, Liu X. Self-assembly of amphiphilic phospholipid peptide dendrimer-based nanovectors for effective delivery of siRNA therapeutics in prostate cancer therapy. J Control Release 2020; 322:416-425. [PMID: 32247806 DOI: 10.1016/j.jconrel.2020.04.003] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/23/2020] [Accepted: 04/01/2020] [Indexed: 02/07/2023]
Abstract
RNA interference (RNAi) holds great promise for therapeutic applications. However, safe and successful clinical translation essentially requires further advancement of developing efficient delivery systems. Herein, we report that amphiphilic phospholipid peptide dendrimers (AmPPDs) could mediated effective delivery of siRNA targeting Hsp27 for treating castration-resistant prostate cancer (CRPC). AmPPDs bears natural lipid derivative DSPE as the hydrophobic tail and different dendritic l-lysine as the hydrophilic head, capable of compacting siRNA into nanoparticles to protect it from enzymatic degradation. Interestingly, DSPE-KK2, AmPPD bearing smaller hydrophilic dendron, promoting more efficient intracellular uptake and endosome release of the so-formed siRNA complexes, as well as better siRNA releasing ability, ultimately resulting in more potent gene silencing and anticancer effects both in vitro and in vivo. Such outstanding performance of DSPE-KK2 in siRNA delivery may attribute to its optimal balance between the hydrophobic tail and hydrophilic dendritic portion. Our findings provide guidance for the development of safe and effective dendrimer-based siRNA delivery system, thus bringing new hope for combating various diseases.
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Affiliation(s)
- Yiwen Dong
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China
| | - Yu Chen
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China
| | - Dandan Zhu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China
| | - Kangjie Shi
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China
| | - Chi Ma
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China
| | - Wenjie Zhang
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China
| | - Palma Rocchi
- Inserm, Aix-Marseille Université, Institut Paoli-Calmettes, CNRS, CRCM, 13009 Marseille, France
| | - Lei Jiang
- State Key Laboratory of Natural Medicines, Department of Pharmaceutics, China Pharmaceutical University, Nanjing 210009, PR China.
| | - Xiaoxuan Liu
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing 210009, PR China.
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10
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Lu C, Li Z, Chang L, Dong Z, Guo P, Shen G, Xia Q, Zhao P. Efficient Delivery of dsRNA and DNA in Cultured Silkworm Cells for Gene Function Analysis Using PAMAM Dendrimers System. INSECTS 2019; 11:insects11010012. [PMID: 31877645 PMCID: PMC7022533 DOI: 10.3390/insects11010012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/22/2019] [Revised: 12/13/2019] [Accepted: 12/18/2019] [Indexed: 01/26/2023]
Abstract
: Polyamidoamine (PAMAM) dendrimers are emerging as intriguing nanovectors for nucleic acid delivery because of their unique well-defined architecture and high binding capacity, which have been broadly applied in DNA- and RNA-based therapeutics. The low-cost and high-efficiency of PAMAM dendrimers relative to traditional liposomal transfection reagents also promote their application in gene function analysis. In this study, we first investigated the potential use of a PAMAM system in the silkworm model insect. We determined the binding property of G5-PAMAM using dsRNA and DNA in vitro, and substantially achieved the delivery of dsRNA and DNA from culture medium to both silkworm BmN and BmE cells, thus leading to efficient knockdown and expression of target genes. Under treatments with different concentrations of G5-PAMAM, we evaluated its cellular cytotoxicity on silkworm cells, and the results show that G5-PAMAM had no obvious toxicity to cells. The presence of serum in the culture medium did not affect the delivery performance of DNA and dsRNA by G5-PAMAM, revealing its convenient use for various purposes. In conclusion, our data demonstrate that the PAMAM system provides a promising strategy for delivering dsRNA and DNA in cultured silkworm cells and promote its further application in individuals.
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Affiliation(s)
- Chenchen Lu
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Zhiqing Li
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Li Chang
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Zhaoming Dong
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Pengchao Guo
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Guanwang Shen
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Qingyou Xia
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
| | - Ping Zhao
- Biological Science Research Center, Southwest University, Chongqing 400715, China
- Chongqing Key Laboratory of Sericultural Science, Chongqing Engineering and Technology Research Center for Novel Silk Materials, Southwest University, Chongqing 400715, China
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11
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Dias AP, da Silva Santos S, da Silva JV, Parise-Filho R, Igne Ferreira E, Seoud OE, Giarolla J. Dendrimers in the context of nanomedicine. Int J Pharm 2019; 573:118814. [PMID: 31759101 DOI: 10.1016/j.ijpharm.2019.118814] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 01/23/2023]
Abstract
Dendrimers are globular structures, presenting an initiator core, repetitive layers starting radially from the core and terminal groups on the surface, resembling tree architecture. These structures have been studied in many biological applications, as drug, DNA, RNA and proteins delivery, as well as imaging and radiocontrast agents. With reference to that, this review focused in providing examples of dendrimers used in nanomedicine. Although most studies emphasize cancer, there are others which reveal action in the neurosystem, reducing either neuroinflammation or protein aggregation. Dendrimers can carry bioactive compounds by covalent bond (dendrimer prodrug), or by ionic interaction or adsortion in the internal space of the nanostructure. Additionally, dendrimers can be associated with other polymers, as PEG (polyethylene glycol), and with targeting structures as aptamers, antibodies, folic acid and carbohydrates. Their products in preclinical/clinical trial and those in the market are also discussed, with a total of six derivatives in clinical trials and seven products available in the market.
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Affiliation(s)
- Ana Paula Dias
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo - USP, São Paulo, SP 05508-900, Brazil
| | - Soraya da Silva Santos
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo - USP, São Paulo, SP 05508-900, Brazil
| | - João Vitor da Silva
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo - USP, São Paulo, SP 05508-900, Brazil
| | - Roberto Parise-Filho
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo - USP, São Paulo, SP 05508-900, Brazil
| | - Elizabeth Igne Ferreira
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo - USP, São Paulo, SP 05508-900, Brazil
| | - Omar El Seoud
- Department of Organic Chemistry, Institute of Chemistry, University of São Paulo - USP, São Paulo, SP, Brazil
| | - Jeanine Giarolla
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo - USP, São Paulo, SP 05508-900, Brazil.
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12
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Evolution from Covalent to Self-Assembled PAMAM-Based Dendrimers as Nanovectors for siRNA Delivery in Cancer by Coupled In Silico-Experimental Studies. Part I: Covalent siRNA Nanocarriers. Pharmaceutics 2019; 11:pharmaceutics11070351. [PMID: 31323863 PMCID: PMC6680565 DOI: 10.3390/pharmaceutics11070351] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2019] [Revised: 07/10/2019] [Accepted: 07/16/2019] [Indexed: 12/28/2022] Open
Abstract
Small interfering RNAs (siRNAs) represent a new approach towards the inhibition of gene expression; as such, they have rapidly emerged as promising therapeutics for a plethora of important human pathologies including cancer, cardiovascular diseases, and other disorders of a genetic etiology. However, the clinical translation of RNA interference (RNAi) requires safe and efficient vectors for siRNA delivery into cells. Dendrimers are attractive nanovectors to serve this purpose, as they present a unique, well-defined architecture and exhibit cooperative and multivalent effects at the nanoscale. This short review presents a brief introduction to RNAi-based therapeutics, the advantages offered by dendrimers as siRNA nanocarriers, and the remarkable results we achieved with bio-inspired, structurally flexible covalent dendrimers. In the companion paper, we next report our recent efforts in designing, characterizing and testing a series of self-assembled amphiphilic dendrimers and their related structural alterations to achieve unprecedented efficient siRNA delivery both in vitro and in vivo.
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13
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Tong QS, Xu W, Huang QY, Zhang YR, Shi XX, Huang H, Li HJ, Du JZ, Wang J. Multi-stimuli responsive poly(amidoamine) dendrimers with peripheral N-dialkylaminoethyl carbamate moieties. Polym Chem 2019. [DOI: 10.1039/c8py01605d] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A novel type of multi-stimuli responsive dendrimer with thermo-, pH-, and CO2-responsiveness was developed through facile modification of polyamidoamine dendrimers with various N-dialkylaminoethyl carbamate moieties.
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Affiliation(s)
- Qi-Song Tong
- School of Biomedical Science and Engineering
- South China University of Technology
- Guangzhou 510006
- China
- Institutes for Life Sciences
| | - Wei Xu
- School of Biomedical Science and Engineering
- South China University of Technology
- Guangzhou 510006
- China
- Institutes for Life Sciences
| | - Qiu-Yue Huang
- Institutes for Life Sciences
- and School of Medicine
- South China University of Technology
- Guangzhou
- China
| | - Ya-Ru Zhang
- Institutes for Life Sciences
- and School of Medicine
- South China University of Technology
- Guangzhou
- China
| | - Xiao-Xiao Shi
- Institutes for Life Sciences
- and School of Medicine
- South China University of Technology
- Guangzhou
- China
| | - Hua Huang
- School of Biomedical Science and Engineering
- South China University of Technology
- Guangzhou 510006
- China
- Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education
| | - Hong-Jun Li
- Institutes for Life Sciences
- and School of Medicine
- South China University of Technology
- Guangzhou
- China
| | - Jin-Zhi Du
- School of Biomedical Science and Engineering
- South China University of Technology
- Guangzhou 510006
- China
- Institutes for Life Sciences
| | - Jun Wang
- School of Biomedical Science and Engineering
- South China University of Technology
- Guangzhou 510006
- China
- Institutes for Life Sciences
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14
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Araújo RVD, Santos SDS, Igne Ferreira E, Giarolla J. New Advances in General Biomedical Applications of PAMAM Dendrimers. Molecules 2018; 23:E2849. [PMID: 30400134 PMCID: PMC6278347 DOI: 10.3390/molecules23112849] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 09/07/2018] [Accepted: 09/07/2018] [Indexed: 12/25/2022] Open
Abstract
Dendrimers are nanoscopic compounds, which are monodispersed, and they are generally considered as homogeneous. PAMAM (polyamidoamine) was introduced in 1985, by Donald A. Tomalia, as a new class of polymers, named 'starburst polymers'. This important contribution of Professor Tomalia opened a new research field involving nanotechnological approaches. From then on, many groups have been using PAMAM for diverse applications in many areas, including biomedical applications. The possibility of either linking drugs and bioactive compounds, or entrapping them into the dendrimer frame can improve many relevant biological properties, such as bioavailability, solubility, and selectivity. Directing groups to reach selective delivery in a specific organ is one of the advanced applications of PAMAM. In this review, structural and safety aspects of PAMAM and its derivatives are discussed, and some relevant applications are briefly presented. Emphasis has been given to gene delivery and targeting drugs, as advanced delivery systems using PAMAM and an incentive for its use on neglected diseases are briefly mentioned.
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Affiliation(s)
- Renan Vinicius de Araújo
- Laboratory of Design and Synthesis of Chemotherapeutics Potentially Active in Neglected Diseases (LAPEN), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo-USP, 580⁻Building 13, São Paulo SP 05508-900, Brazil.
| | - Soraya da Silva Santos
- Laboratory of Design and Synthesis of Chemotherapeutics Potentially Active in Neglected Diseases (LAPEN), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo-USP, 580⁻Building 13, São Paulo SP 05508-900, Brazil.
| | - Elizabeth Igne Ferreira
- Laboratory of Design and Synthesis of Chemotherapeutics Potentially Active in Neglected Diseases (LAPEN), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo-USP, 580⁻Building 13, São Paulo SP 05508-900, Brazil.
| | - Jeanine Giarolla
- Laboratory of Design and Synthesis of Chemotherapeutics Potentially Active in Neglected Diseases (LAPEN), Department of Pharmacy, Faculty of Pharmaceutical Sciences, University of São Paulo-USP, 580⁻Building 13, São Paulo SP 05508-900, Brazil.
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15
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Dong Y, Yu T, Ding L, Laurini E, Huang Y, Zhang M, Weng Y, Lin S, Chen P, Marson D, Jiang Y, Giorgio S, Pricl S, Liu X, Rocchi P, Peng L. A Dual Targeting Dendrimer-Mediated siRNA Delivery System for Effective Gene Silencing in Cancer Therapy. J Am Chem Soc 2018; 140:16264-16274. [PMID: 30346764 DOI: 10.1021/jacs.8b10021] [Citation(s) in RCA: 132] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Small interfering RNA (siRNA) is emerging as a novel therapeutic for treating various diseases, provided a safe and efficient delivery is available. In particular, specific delivery to target cells is critical for achieving high therapeutic efficacy while reducing toxicity. Amphiphilic dendrimers are emerging as novel promising carriers for siRNA delivery by virtue of the combined multivalent cooperativity of dendrimers with the self-assembling property of lipid vectors. Here, we report a ballistic approach for targeted siRNA delivery to cancer cells using an amphiphilic dendrimer equipped with a dual targeting peptide bearing an RGDK warhead. According to the molecular design, the amphiphilic dendrimer was expected to deliver siRNA effectively, while the aim of the targeting peptide was to home in on tumors via interaction of its warhead with integrin and the neuropilin-1 receptor on cancer cells. Coating the positively charged siRNA/dendrimer delivery complex with the negatively charged segment of the targeting peptide via electrostatic interactions led to small and stable nanoparticles which were able to protect siRNA from degradation while maintaining the accessibility of RGDK for targeting cancer cells and preserving the ability of the siRNA to escape from endosomes. The targeted system had enhanced siRNA delivery, stronger gene silencing, and more potent anticancer activity compared to nontargeted or covalent dendrimer-based systems. In addition, neither acute toxicity nor induced inflammation was observed. Consequently, this delivery system constitutes a promising nonviral vector for targeted delivery and can be further developed to provide RNAi-based personalized medicine against cancer. Our study also gives new perspectives on the use of nanotechnology based on self-assembling dendrimers in various biomedical applications.
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Affiliation(s)
- Yiwen Dong
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, Center of Advanced Pharmaceutics and Biomaterials , China Pharmaceutical University , 24 Tong Jia Xiang , 210009 Nanjing , People's Republic of China
| | - Tianzhu Yu
- Aix-Marseille Université , CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer", 13288 Marseille , France
| | - Ling Ding
- Aix-Marseille Université , CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer", 13288 Marseille , France
| | - Erik Laurini
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTS), DEA , University of Trieste , 34127 Trieste , Italy
| | - Yuanyu Huang
- Advanced Research Institute of Multidisciplinary Science and School of Life Science , Beijing Institute of Technology , Beijing 100081 , People's Republic of China.,School of Pharmacy , Hunan University of Chinese Medicine , Changsha 410208 , People's Republic of China
| | - Mengjie Zhang
- Advanced Research Institute of Multidisciplinary Science and School of Life Science , Beijing Institute of Technology , Beijing 100081 , People's Republic of China
| | - Yuhua Weng
- Advanced Research Institute of Multidisciplinary Science and School of Life Science , Beijing Institute of Technology , Beijing 100081 , People's Republic of China
| | - Shuting Lin
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, Center of Advanced Pharmaceutics and Biomaterials , China Pharmaceutical University , 24 Tong Jia Xiang , 210009 Nanjing , People's Republic of China
| | - Peng Chen
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, Center of Advanced Pharmaceutics and Biomaterials , China Pharmaceutical University , 24 Tong Jia Xiang , 210009 Nanjing , People's Republic of China
| | - Domenico Marson
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTS), DEA , University of Trieste , 34127 Trieste , Italy
| | - Yifan Jiang
- Aix-Marseille Université , CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer", 13288 Marseille , France
| | - Suzanne Giorgio
- Aix-Marseille Université , CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer", 13288 Marseille , France
| | - Sabrina Pricl
- Molecular Biology and Nanotechnology Laboratory (MolBNL@UniTS), DEA , University of Trieste , 34127 Trieste , Italy
| | - Xiaoxuan Liu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, Center of Advanced Pharmaceutics and Biomaterials , China Pharmaceutical University , 24 Tong Jia Xiang , 210009 Nanjing , People's Republic of China.,Aix-Marseille Université , CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer", 13288 Marseille , France
| | - Palma Rocchi
- Inserm, Aix-Marseille Université , Institut Paoli-Calmettes, CNRS, CRCM, 13009 Marseille , France
| | - Ling Peng
- Aix-Marseille Université , CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer", 13288 Marseille , France
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16
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Shen W, Wang Q, Shen Y, Gao X, Li L, Yan Y, Wang H, Cheng Y. Green Tea Catechin Dramatically Promotes RNAi Mediated by Low-Molecular-Weight Polymers. ACS CENTRAL SCIENCE 2018; 4:1326-1333. [PMID: 30410970 PMCID: PMC6202644 DOI: 10.1021/acscentsci.8b00363] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Indexed: 05/23/2023]
Abstract
Cytosolic delivery is the major challenge that limits the clinical translation of siRNA-based therapeutics. Although thousands of polymers have been developed for siRNA delivery, the efficiency-toxicity correlation is unsatisfactory. Here, we report a facile strategy to fabricate core-shell-structured nanoparticles with robust siRNA delivery efficiency. The nanoparticle is prepared by entropy-driven complexation of siRNA with a green tea catechin to yield a negatively charged core, followed by coating low-molecular-weight polymers to form the shell. This supramolecular strategy facilitates the polymers condensing siRNA into uniform nanoparticles. The nanoparticle specifically down-regulates target genes in vitro and in vivo, and efficiently attenuates chronic intestinal inflammation in an inflammatory bowel disease model. Notably, the highly efficient nanoparticles are applicable for various polymers with different topologies and chemical compositions, providing a versatile technique to break down the efficiency-toxicity correlation of cationic polymers. The proposed strategy in this study permits the development of a promising platform for polymer-mediated siRNA delivery.
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Affiliation(s)
- Wanwan Shen
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
| | - Qingwei Wang
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
| | - Yang Shen
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
| | - Xiao Gao
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
| | - Lei Li
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
| | - Yang Yan
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
| | - Hui Wang
- South
China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
| | - Yiyun Cheng
- Shanghai
Key Laboratory of Regulatory Biology, East
China Normal University, Shanghai 200241, China
- South
China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou 510640, China
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17
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Ghaffari M, Dehghan G, Abedi-Gaballu F, Kashanian S, Baradaran B, Ezzati Nazhad Dolatabadi J, Losic D. Surface functionalized dendrimers as controlled-release delivery nanosystems for tumor targeting. Eur J Pharm Sci 2018; 122:311-330. [PMID: 30003954 DOI: 10.1016/j.ejps.2018.07.020] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 07/05/2018] [Accepted: 07/06/2018] [Indexed: 01/12/2023]
Abstract
Dendrimers are nano-sized and three-dimensional macromolecules with well-defined globular architecture and are widely used in various aspects such as drug and gene delivery owing to multivalent and host-guest entrapment properties. However, dendrimers like other nanomaterials have some disadvantages for example rapid clearance by reticuloendothelial system, toxicity due to interaction of amine terminated group with cell membrane, low transfection efficiency and lack of controlled release behavior, which reduce their therapeutic efficiency. To solve these problems, surface functionalization of dendrimers can be carried out. Surface functionalization not only mitigates this obstacle but also renders excessive specificity to dendrimer to improve efficiency of cancer therapy. Specific properties in cancer cell compared to normal cells such as overexpression of various receptors and difference in biological condition like pH, temperature and redox of tumor environment can be an appropriate strategy to increase site-specific targeting efficiency. Therefore, in this article we focus on numerous functionalization strategies, which are used in the modification of dendrimers through attachment of lipid, amino acid, protein/peptide, aptamer, vitamin, antibody. Moreover, increased biocompatibility, site-specific delivery based on various ligands, enhanced transfection efficiency, sustained and controlled release behavior based on stimuli responsiveness are benefits of functionalized dendrimer which we discuss in this review. Overall, these functionalized dendrimers can open a new horizon in the field of targeted drug and gene delivery.
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Affiliation(s)
- Maryam Ghaffari
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Gholamreza Dehghan
- Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Fereydoon Abedi-Gaballu
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran; Drug Applied Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Soheila Kashanian
- Faculty of Chemistry, Sensor and Biosensor Research Center (SBRC) & Nanoscience and Nanotechnology Research Center (NNRC), Razi University, Kermanshah, Iran; Nano Drug Delivery Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Dusan Losic
- School of Chemical Engineering, The University of Adelaide, North Engineering Building, N206, Adelaide, SA 5005, Australia.
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18
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He D, Lin H, Yu Y, Shi L, Tu J. Precisely Defined Polymers for Efficient Gene Delivery. Top Curr Chem (Cham) 2018; 376:2. [DOI: 10.1007/s41061-017-0183-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 12/27/2017] [Indexed: 01/03/2023]
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19
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Ma J, Kala S, Yung S, Chan TM, Cao Y, Jiang Y, Liu X, Giorgio S, Peng L, Wong AST. Blocking Stemness and Metastatic Properties of Ovarian Cancer Cells by Targeting p70 S6K with Dendrimer Nanovector-Based siRNA Delivery. Mol Ther 2017; 26:70-83. [PMID: 29241971 DOI: 10.1016/j.ymthe.2017.11.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 11/07/2017] [Accepted: 11/10/2017] [Indexed: 12/17/2022] Open
Abstract
Metastasis is the cause of most (>90%) cancer deaths and currently lacks effective treatments. Approaches to understanding the biological process, unraveling the most effective molecular target(s), and implementing nanotechnology to increase the therapeutic index are expected to facilitate cancer therapy against metastasis. Here, we demonstrate the potential advantages of bringing these three approaches together through the rational design of a small interfering RNA (siRNA) that targets p70S6K in cancer stem cells (CSCs) in combination with dendrimer nanotechnology-based siRNA delivery. Our results demonstrated that the generation 6 (G6) poly(amidoamine) dendrimer can be used as a nanovector to effectively deliver p70S6K siRNA by forming uniform dendriplex nanoparticles that protect the siRNA from degradation. These nanoparticles were able to significantly knock down p70S6K in ovarian CSCs, leading to a marked reduction in CSC proliferation and expansion without obvious toxicity toward normal ovarian surface epithelial cells. Furthermore, treatment with the p70S6K siRNA/G6 dendriplexes substantially decreased mesothelial interaction, migration and invasion of CSCs in vitro, as well as tumor growth and metastasis in vivo. Collectively, these results suggest that p70S6K constitutes a promising therapeutic target, and the use of siRNA in combination with nanotechnology-based delivery may constitute a new approach for molecularly targeted cancer therapy to treat metastasis.
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Affiliation(s)
- Jing Ma
- School of Biological Sciences, University of Hong Kong, Pokfulam Road, Hong Kong
| | - Shashwati Kala
- School of Biological Sciences, University of Hong Kong, Pokfulam Road, Hong Kong
| | - Susan Yung
- Department of Medicine, University of Hong Kong, Sassoon Road, Hong Kong
| | - Tak Mao Chan
- Department of Medicine, University of Hong Kong, Sassoon Road, Hong Kong
| | - Yu Cao
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer," 13288 Marseille, France
| | - Yifan Jiang
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer," 13288 Marseille, France
| | - Xiaoxuan Liu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Drug Discovery, China Pharmaceutical University, 210009 Nanjing, China
| | - Suzanne Giorgio
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer," 13288 Marseille, France
| | - Ling Peng
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, "Equipe Labellisée Ligue Contre le Cancer," 13288 Marseille, France.
| | - Alice S T Wong
- School of Biological Sciences, University of Hong Kong, Pokfulam Road, Hong Kong.
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20
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21
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Dong S, Chen Q, Li W, Jiang Z, Ma J, Gao H. A dendritic catiomer with an MOF motif for the construction of safe and efficient gene delivery systems. J Mater Chem B 2017; 5:8322-8329. [DOI: 10.1039/c7tb01966a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The dendritic catiomer using biocompatible Zr-MOFs as the core exhibited a markedly higher transfection efficiency and lower cytotoxicity than the commercial gold standard branched PEI25k in A549 cells.
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Affiliation(s)
- Shuqi Dong
- School of Chemistry and Chemical Engineering
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Qixian Chen
- School of Life Science and Biotechnology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Wei Li
- School of Chemistry and Chemical Engineering
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Zhu Jiang
- School of Chemistry and Chemical Engineering
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Jianbiao Ma
- School of Chemistry and Chemical Engineering
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
| | - Hui Gao
- School of Chemistry and Chemical Engineering
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- Tianjin University of Technology
- Tianjin 300384
- P. R. China
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22
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Adhesive peptides conjugated PAMAM dendrimer as a coating polymeric material enhancing cell responses. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.03.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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23
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Huang Q, Li L, Li L, Chen H, Dang Y, Zhang J, Shao N, Chang H, Zhou Z, Liu C, He B, Wei H, Xiao J. MDM2 knockdown mediated by a triazine-modified dendrimer in the treatment of non-small cell lung cancer. Oncotarget 2016; 7:44013-44022. [PMID: 27259273 PMCID: PMC5190075 DOI: 10.18632/oncotarget.9768] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Accepted: 05/13/2016] [Indexed: 12/13/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer and the five-year survival rate is lower in advanced NSCLC patients. Chemotherapy is a widely used strategy in NSCLC treatment, but is usually limited by poor therapeutic efficacy and adverse effects. Therefore, a new therapeutic regimen is needed for NSCLC treatment. Gene therapy is a new strategy in the treatment of NSCLC. However, the lack of efficient and low toxic vectors remains the major obstacle. Here, we developed a biocompatible dendrimer as a non-viral vector for the delivery of mouse double minute2 (MDM2) siRNA in vitro and in vivo to treat NSCLC. The triazine-modified dendrimer efficiently stimulates the down-regulation of MDM2 gene in NSCLC PC9 cells, which induces significant cell apoptosis through the activation of apoptosis markers such as caspase-8 and poly(ADP-ribose) polymerase (PARP) cleavage. Furthermore, the dendrimer/MDM2 siRNA polyplexes showed excellent activity in the inhibition of tumor growth in a PC9 xenograft tumor model. These results suggested that inhibition the expression of MDM2 might be a potential target in NSCLC treatment.
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Affiliation(s)
- Quan Huang
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Lei Li
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Lin Li
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China
| | - Hui Chen
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Yongyan Dang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Jishen Zhang
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China
| | - Naimin Shao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Hong Chang
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Zhengjie Zhou
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Chongyi Liu
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Bingwei He
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, PR China
| | - Haifeng Wei
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China
| | - Jianru Xiao
- Department of Orthopedic Oncology, Changzheng Hospital, The Second Military Medical University, Shanghai, PR China
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24
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Chen C, Posocco P, Liu X, Cheng Q, Laurini E, Zhou J, Liu C, Wang Y, Tang J, Dal Col V, Yu T, Giorgio S, Fermeglia M, Qu F, Liang Z, Rossi JJ, Liu M, Rocchi P, Pricl S, Peng L. Mastering Dendrimer Self-Assembly for Efficient siRNA Delivery: From Conceptual Design to In Vivo Efficient Gene Silencing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2016; 12:3667-76. [PMID: 27244195 PMCID: PMC5724382 DOI: 10.1002/smll.201503866] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/15/2016] [Indexed: 05/11/2023]
Abstract
Self-assembly is a fundamental concept and a powerful approach in molecular science. However, creating functional materials with the desired properties through self-assembly remains challenging. In this work, through a combination of experimental and computational approaches, the self-assembly of small amphiphilic dendrons into nanosized supramolecular dendrimer micelles with a degree of structural definition similar to traditional covalent high-generation dendrimers is reported. It is demonstrated that, with the optimal balance of hydrophobicity and hydrophilicity, one of the self-assembled nanomicellar systems, totally devoid of toxic side effects, is able to deliver small interfering RNA and achieve effective gene silencing both in cells - including the highly refractory human hematopoietic CD34(+) stem cells - and in vivo, thus paving the way for future biomedical implementation. This work presents a case study of the concept of generating functional supramolecular dendrimers via self-assembly. The ability of carefully designed and gauged building blocks to assemble into supramolecular structures opens new perspectives on the design of self-assembling nanosystems for complex and functional applications.
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Affiliation(s)
- Chao Chen
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire, UMR 7273, 13390 Marseille, France
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Paola Posocco
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA). University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Xiaoxuan Liu
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
- Centre de Recherche en Cancérologie de Marseille, INSERM, UMR1068, 13009 Marseille, France
- Institut Paoli-Calmettes, 13009 Marseille, France
| | - Qiang Cheng
- Laboratory of Nucleic Acid Technology, Institute of Molecular Medicine, Peking University, Beijing, China
| | - Erik Laurini
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA). University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Jiehua Zhou
- Department of Molecular and Cellular Biology, Beckman Research Institute, CA 91010, USA
| | - Cheng Liu
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Yang Wang
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
| | - Jingjie Tang
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
| | - Valentina Dal Col
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA). University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Tianzhu Yu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Suzanne Giorgio
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
| | - Maurizio Fermeglia
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA). University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
| | - Fanqi Qu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, P. R. China
| | - Zicai Liang
- Laboratory of Nucleic Acid Technology, Institute of Molecular Medicine, Peking University, Beijing, China
| | - John J. Rossi
- Department of Molecular and Cellular Biology, Beckman Research Institute, CA 91010, USA
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute, CA 91010, USA
| | - Minghua Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Colloids and Surfaces, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Palma Rocchi
- Centre de Recherche en Cancérologie de Marseille, INSERM, UMR1068, 13009 Marseille, France
- Institut Paoli-Calmettes, 13009 Marseille, France
- Aix-Marseille Université, CNRS, UMR7258, 13009 Marseille, France
- CNRS, UMR7258, 13009 Marseille, France
| | - Sabrina Pricl
- Molecular Simulation Engineering (MOSE) Laboratory, Department of Engineering and Architecture (DEA). University of Trieste, Piazzale Europa 1, 34127 Trieste, Italy
- National Interuniversity Consortium for Material Science and Technology (INSTM), Research Unit MOSE-DEA, University of Trieste, Italy
- Corresponding Authors. Dr. Ling PENG, , Dr. Sabrina PRICL,
| | - Ling Peng
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, « Equipe Labellisée Ligue Contre le Cancer », 163, avenue de Luminy, 13288 Marseille, France
- Corresponding Authors. Dr. Ling PENG, , Dr. Sabrina PRICL,
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Abstract
Small interfering RNA (SiRNA) delivery remains a major challenge in RNAi-based therapy. Dendrimers are emerging as appealing nonviral vectors for SiRNA delivery thanks to their well-defined architecture and their unique cooperativity and multivalency confined within a nanostructure. We have recently demonstrated that structurally flexible poly(amidoamine) (PAMAM) dendrimers are safe and effective nanovectors for SiRNA delivery in various disease models in vitro and in vivo. The present chapter showcases these dendrimers can package different SiRNA molecules into stable and nanosized particles, which protect SiRNA from degradation and promote cellular uptake of SiRNA, resulting in potent gene silencing at both mRNA and protein level in the prostate cancer cell model. Our results demonstrate this set of flexible PAMAM dendrimers are indeed safe and effective nonviral vectors for SiRNA delivery and hold great promise for further applications in functional genomics and RNAi-based therapies.
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Tailoring the dendrimer core for efficient gene delivery. Acta Biomater 2016; 35:1-11. [PMID: 26923528 DOI: 10.1016/j.actbio.2016.02.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2015] [Revised: 01/16/2016] [Accepted: 02/22/2016] [Indexed: 01/01/2023]
Abstract
Dendrimers have been widely used as non-viral gene vectors due to well-defined chemical structures, high density of cationic charges and ease of surface modification. Although a large number of studies have reported the important roles of dendrimer architecture, component, generation and surface functionality in gene delivery, the effect of dendrimer core on this issue still remains unclear. Recent literatures suggest that a slight alternation in dendrimer core has a profound effect in the transfection efficacy and biocompatibility. In this review, we will discuss the transfection mechanism of dendrimers with different types of cores in respect of flexibility, hydrophobicity and functionality. We hope to open a possibility of designing efficient dendrimers for gene delivery by choosing a proper dendrimer core. STATEMENT OF SIGNIFICANCE As a branch of researches on dendrimers and dendritic polymers, the design of biocompatible and high efficient polymeric gene carriers has attracted increasing attentions during these years. Although the effect of dendrimer generation, species, architecture and surface functionality on gene delivery have been widely reported, the effect of dendrimer core on this issue still remains unclear. Recent literatures suggest that a minor variation on the dendrimer core has a profound effect in the transfection efficacy and biocompatibility. This critical review summarized the dendrimers with different types of cores and discussed the transfection mechanism with particular focus on the flexibility, hydrophobicity, and functionality. It is hoped to provide a new insight to design efficient and safe dendrimer-based gene vectors by choosing a proper core. To the best of our knowledge, this is the first review on the effect of dendrimer core on gene delivery. The findings obtained in this filed are of central importance in the design of efficient polymeric gene vectors. This article will appeal a wide readership such as physical chemist, dendrimer chemist, biological chemist, pharmaceutical scientist, and biomaterial researchers. We hope that this review article can be published by Acta Biomaterialia, a top journal that publishes important reviews in the field of biomaterials science.
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27
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Bi X, Liang A, Tan Y, Maturavongsadit P, Higginbothem A, Gado T, Gramling A, Bahn H, Wang Q. Thiol-ene crosslinking polyamidoamine dendrimer-hyaluronic acid hydrogel system for biomedical applications. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2016; 27:743-57. [DOI: 10.1080/09205063.2016.1159473] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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28
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Shao N, Dai T, Liu Y, Cheng Y. A supramolecular approach to improve the gene transfection efficacy of dendrimers. Chem Commun (Camb) 2016; 51:9741-3. [PMID: 25986949 DOI: 10.1039/c5cc02300a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Cyanuric acid is able to form complementary hydrogen bonds with melamine. Here, the specific recognition between cyanuric acid and melamine is used to significantly improve the gene transfection efficacy of low generation dendrimers via a supramolecular approach.
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Affiliation(s)
- Naimin Shao
- Shanghai Key Laboratory of Regulatory Biology, School of Life Sciences, East China Normal University, Shanghai, 200241, P. R. China.
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29
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Wang F, Deng L, Hu J, Cheng Y. Being Two Is Better than Being One: A Facile Strategy to Fabricate Multicomponent Nanoparticles for Efficient Gene Delivery. Bioconjug Chem 2016; 27:638-46. [DOI: 10.1021/acs.bioconjchem.5b00643] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fei Wang
- Shanghai
Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
- Shanghai
Key Laboratory for Bone and Joint Diseases, Shanghai Institute of
Traumatology and Orthopaedics, Shanghai Ruijin Hospital, School of
Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Lianfu Deng
- Shanghai
Key Laboratory for Bone and Joint Diseases, Shanghai Institute of
Traumatology and Orthopaedics, Shanghai Ruijin Hospital, School of
Medicine, Shanghai Jiaotong University, Shanghai 200025, China
| | - Jingjing Hu
- Shanghai
Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
| | - Yiyun Cheng
- Shanghai
Key Laboratory of Regulatory Biology and School of Life Sciences, East China Normal University, Shanghai 200241, China
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30
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Cui Q, Yang S, Ye P, Tian E, Sun G, Zhou J, Sun G, Liu X, Chen C, Murai K, Zhao C, Azizian KT, Yang L, Warden C, Wu X, D'Apuzzo M, Brown C, Badie B, Peng L, Riggs AD, Rossi JJ, Shi Y. Downregulation of TLX induces TET3 expression and inhibits glioblastoma stem cell self-renewal and tumorigenesis. Nat Commun 2016; 7:10637. [PMID: 26838672 PMCID: PMC4742843 DOI: 10.1038/ncomms10637] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Accepted: 01/05/2016] [Indexed: 12/31/2022] Open
Abstract
Glioblastomas have been proposed to be maintained by highly tumorigenic glioblastoma stem cells (GSCs) that are resistant to current therapy. Therefore, targeting GSCs is critical for developing effective therapies for glioblastoma. In this study, we identify the regulatory cascade of the nuclear receptor TLX and the DNA hydroxylase Ten eleven translocation 3 (TET3) as a target for human GSCs. We show that knockdown of TLX expression inhibits human GSC tumorigenicity in mice. Treatment of human GSC-grafted mice with viral vector-delivered TLX shRNA or nanovector-delivered TLX siRNA inhibits tumour development and prolongs survival. Moreover, we identify TET3 as a potent tumour suppressor downstream of TLX to regulate the growth and self-renewal in GSCs. This study identifies the TLX-TET3 axis as a potential therapeutic target for glioblastoma. TLX is a nuclear receptor essential for neural stem cell self-renewal and recently involved in glioblastoma development. In this study, the authors show that inhibition of TLX expression, achieved using a dendrimer nanovector-delivered siRNAs or viral vector-delivered shRNAs, reduces glioblastoma stem cells self renewal and in vivo tumour growth through activation of TET3.
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Affiliation(s)
- Qi Cui
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA.,Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Su Yang
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA.,Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Peng Ye
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - E Tian
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Guoqiang Sun
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Jiehua Zhou
- Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Guihua Sun
- Department of Diabetes and Metabolic Diseases Research, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Xiaoxuan Liu
- Aix-Marseille Université, CNRS, UMR 7325, Centre Interdisciplinaire de Nanoscience de Marseille, 13288 Marseille, France
| | - Chao Chen
- Aix-Marseille Université, CNRS, UMR 7325, Centre Interdisciplinaire de Nanoscience de Marseille, 13288 Marseille, France
| | - Kiyohito Murai
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Chunnian Zhao
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Krist T Azizian
- Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Lu Yang
- Integrative Genomics Core, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Charles Warden
- Integrative Genomics Core, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Xiwei Wu
- Integrative Genomics Core, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Massimo D'Apuzzo
- Department of Pathology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Christine Brown
- Department of Hematology and Hematopoietic Cell Transplantation, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Behnam Badie
- Department of Surgery, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Ling Peng
- Aix-Marseille Université, CNRS, UMR 7325, Centre Interdisciplinaire de Nanoscience de Marseille, 13288 Marseille, France
| | - Arthur D Riggs
- Department of Diabetes and Metabolic Diseases Research, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - John J Rossi
- Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA.,Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
| | - Yanhong Shi
- Department of Developmental and Stem Cell Biology, Division of Stem Cell Biology Research, Cancer Center, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA.,Irell and Manella Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, 1500 E. Duarte Road, Duarte, California 91010, USA
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31
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Adesina SK, Akala EO. Nanotechnology Approaches for the Delivery of Exogenous siRNA for HIV Therapy. Mol Pharm 2015; 12:4175-87. [PMID: 26524196 DOI: 10.1021/acs.molpharmaceut.5b00335] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
RNA interference (RNAi) is triggered by oligonucleotides that are about 21-23 nucleotides long and are capable of inducing the destruction of complementary mRNA. The RNAi technique has been successfully utilized to target HIV replication; however, the main limitation to the successful utilization of this technique in vivo is the inability of naked siRNA to cross the cell membrane by diffusion due to its strong anionic charge and large molecular weight. This review describes current nonviral nanotechnological approaches to deliver anti-HIV siRNAs for the treatment of HIV infection.
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Affiliation(s)
- Simeon K Adesina
- Department of Pharmaceutical Sciences, Howard University , Washington, DC 20059, United States
| | - Emmanuel O Akala
- Department of Pharmaceutical Sciences, Howard University , Washington, DC 20059, United States
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32
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Bi X, Amie Luckanagul J, Allen A, Ramaboli M, Campbell E, West D, Maturavongsadit P, Brummett K, Wang Q. Synthesis of PAMAM dendrimer-based fast cross-linking hydrogel for biofabrication. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2015; 26:669-82. [PMID: 26023858 DOI: 10.1080/09205063.2015.1056716] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Hydrogels possess great potential in biofabrication because they allow cell encapsulation and proliferation in a highly hydrated three-dimensional environment, and they provide biologically relevant chemical and physical signals. However, development of hydrogel systems that mimic the complexity of natural extracellular matrix remains a challenge. In this study, we report the development of a binary hydrogel system containing a synthetic poly(amido amine) (PAMAM) dendrimer and a natural polymer, i.e., hyaluronic acid (HA), to form a fast cross-linking hydrogel. Live cell staining experiment and cell viability assay of bone marrow stem cells demonstrated that cells were viable and proliferating in the in situ formed PAMAM/HA hydrogel system. Furthermore, introduction of a Arginylglycylaspartic acid (RGD) peptide into the hydrogel system significantly improved the cell viability, proliferation, and attachment. Therefore, this PAMAM/HA hydrogel system could be a promising platform for various applications in biofabrication.
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Affiliation(s)
- Xiangdong Bi
- a Department of Physical Sciences , Charleston Southern University , Charleston , SC , USA
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33
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Zhou Y, Li J, Lu F, Deng J, Zhang J, Fang P, Peng X, Zhou SF. A study on the hemocompatibility of dendronized chitosan derivatives in red blood cells. DRUG DESIGN DEVELOPMENT AND THERAPY 2015; 9:2635-45. [PMID: 25999697 PMCID: PMC4437608 DOI: 10.2147/dddt.s77105] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dendrimers are hyperbranched macromolecules with well-defined topological structures and multivalent functionalization sites, but they may cause cytotoxicity due to the presence of cationic charge. Recently, we have introduced alkyne-terminated poly(amidoamine) (PAMAM) dendrons of different generations (G=2,3) into chitosan to obtain dendronized chitosan derivatives [Cs-g-PAMAM (G=2,3)], which exhibited a better water solubility and enhanced plasmid DNA transfection efficiency. In this study, we attempted to examine the impact of Cs-g-PAMAM (G=2,3) at different concentrations (25 μg/mL, 50 μg/mL, and 100 μg/mL) on the morphology, surface structure, and viability of rat red blood cells (RBCs). The results showed that treatment of RBCs with Cs-g-PAMAM (G=2,3) at 50 μg/mL and 100 μg/mL induced a slightly higher hemolysis than Cs, and Cs-g-PAMAM (G=3) caused a slightly higher hemolysis than Cs-g-PAMAM (G=2), but all values were <5.0%. Optical microscopic and atomic force microscopic examinations indicated that Cs-g-PAMAM (G=2,3) caused slight RBC aggregation and lysis. Treatment of RBCs with 100 μg/mL Cs-g-PAMAM (G=3) induced echinocytic transformation, and RBCs displayed characteristic irregular contour due to the folding of the periphery. Drephanocyte-like RBCs were observed when treated with 100 μg/mL Cs-g-PAMAM (G=3). Erythrocytes underwent similar shape transition upon treatment with Cs-g-PAMAM (G=2) or Cs. The roughness values (Rms) of RBCs incubated with Cs-g-PAMAM (G=2,3) were significantly larger than those for RBCs incubated with physiological saline (P<0.01), but the Rms showed no difference for Cs and Cs-g-PAMAM (G=2,3) (P>0.05). Furthermore, Cs-g-PAMAM (G=2,3) exhibited a lower cytotoxicity in human kidney 293T cells. These results indicate that Cs-g-PAMAM (G=2,3) are hemocompatible but may disturb membrane and lipid structures at higher concentrations. Further safety and biocompatibility evaluations are warranted for Cs-g-PAMAM. Our findings prove helpful for a better understanding of the advantages of combining PAMAM dendrimers and chitosan to design and develop new, safe, and effective drug delivery vehicles.
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Affiliation(s)
- Yanfang Zhou
- Guangdong Medical Universtity, Dongguan, Guangdong, People's Republic of China
| | - Jiemei Li
- Guangdong Medical Universtity, Dongguan, Guangdong, People's Republic of China
| | - Fang Lu
- Guangdong Medical Universtity, Dongguan, Guangdong, People's Republic of China
| | - Junjie Deng
- Department of Materials Science and Engineering, Drexel University, Philadelphia, PA, USA
| | - Jiahua Zhang
- Guangdong Medical Universtity, Dongguan, Guangdong, People's Republic of China
| | - Peijie Fang
- Guangdong Medical Universtity, Dongguan, Guangdong, People's Republic of China
| | - Xinsheng Peng
- Guangdong Medical Universtity, Dongguan, Guangdong, People's Republic of China
| | - Shu-Feng Zhou
- Department of Pharmaceutical Sciences, College of Pharmacy, University of South Florida, Tampa, FL, USA
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Messaoudi K, Clavreul A, Lagarce F. Toward an effective strategy in glioblastoma treatment. Part II: RNA interference as a promising way to sensitize glioblastomas to temozolomide. Drug Discov Today 2015; 20:772-9. [PMID: 25892456 DOI: 10.1016/j.drudis.2015.02.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2014] [Revised: 02/05/2015] [Accepted: 02/27/2015] [Indexed: 12/20/2022]
Abstract
RNA interference (RNAi) is a strategy of gene regulation that has opened up many opportunities for the treatment of cancers, especially glioblastoma multiforme (GBM). This strategy reduced the expression of many proteins involved in the resistance of these tumors to anticancer drugs, particularly to temozolomide (TMZ). A significant research effort has gone into RNAi delivery and target selection for clinical application of this new discovery in the treatment of GBMs. However, some limitations must be resolved to enhance the safety of RNAi-based therapeutics and to reduce their immune response. In this review, the mechanism of RNAi will be described. Moreover, the opportunities offered by RNAi strategy to reverse the phenotype of these tumor cells as well as prospects and challenges ahead in the RNAi-based therapy will be discussed.
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Affiliation(s)
- Khaled Messaoudi
- LUNAM Université, Angers, France; Inserm U1066, Micro et Nanomédicines Biomimétiques, IBS, Angers Cedex 9, France
| | - Anne Clavreul
- LUNAM Université, Angers, France; Inserm U1066, Micro et Nanomédicines Biomimétiques, IBS, Angers Cedex 9, France
| | - Frédéric Lagarce
- LUNAM Université, Angers, France; Inserm U1066, Micro et Nanomédicines Biomimétiques, IBS, Angers Cedex 9, France; Service Pharmacie, CHU Angers, France.
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35
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Wang Y, Li L, Shao N, Hu Z, Chen H, Xu L, Wang C, Cheng Y, Xiao J. Triazine-modified dendrimer for efficient TRAIL gene therapy in osteosarcoma. Acta Biomater 2015; 17:115-24. [PMID: 25595474 DOI: 10.1016/j.actbio.2015.01.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2014] [Revised: 11/26/2014] [Accepted: 01/06/2015] [Indexed: 02/06/2023]
Abstract
Osteosarcoma is a high-grade malignant bone tumor that usually develops in the teenagers. Despite improvement in therapy, the five-year survival rate is poor for patients not responding to treatment or with metastases. Tumor necrosis factor (TNF) related apoptosis inducing ligand (TRAIL) gene therapy is a new strategy in the treatment of cancers, however, the lack of efficient and low toxic vectors remains the major obstacle in TRAIL gene therapy. In this study, a triazine-modified dendrimer G5-DAT66 was synthesized and used as a vector for TRAIL gene therapy in vitro and in vivo. The material shows much higher transfection efficacy on osteosarcoma MG-63 cell line than commercial transfection reagents such as Lipofectamine 2000 and SuperFect. It effectively induces apoptosis in MG-63 cells and three-dimensional MG-63 cell cultures when delivering a TRAIL plasmid. In vivo studies further prove that G5-DAT66 efficiently transfects TRAIL plasmid in tumors and inhibits tumor growth in osteosarcoma-bearing mice. These results suggest that triazine-modified dendrimer has promising potential for TRAIL gene therapy in osteosarcoma.
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36
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Liu X, Liu C, Zhou J, Chen C, Qu F, Rossi JJ, Rocchi P, Peng L. Promoting siRNA delivery via enhanced cellular uptake using an arginine-decorated amphiphilic dendrimer. NANOSCALE 2015; 7:3867-3875. [PMID: 25283447 DOI: 10.1039/c4nr04759a] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
RNA interference (RNAi) with small interfering RNA (siRNA) is expected to offer an attractive means to specifically and efficiently silence disease-associated genes for treating various diseases provided that safe and efficient delivery systems are available. In this study, we have established an arginine-decorated amphiphilic dendrimer composed of a hydrophobic alkyl chain and a hydrophilic PAMAM dendron bearing arginine terminals as nonviral vector for siRNA delivery. Indeed, this dendrimer proved to be very effective at delivering siRNAs in human prostate cancer PC-3 cells and in human hematopoietic CD34+ stem cells, leading to improved gene silencing compared to the corresponding nonarginine decorated dendrimer. Further investigation confirmed that this dendrimer was granted with the capacity to form stable nanoparticles with siRNA and significantly enhance cellular uptake of siRNA. In addition, this dendrimer revealed no discernible cytotoxicity. All these findings demonstrate that decoration of the dendrimer surface with arginine residues is indeed a useful strategy to improve the delivery ability of dendrimers.
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Affiliation(s)
- Xiaoxuan Liu
- Aix-Marseille Université, CNRS, Centre Interdisciplinaire de Nanoscience de Marseille, UMR 7325, France.
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37
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Shao N, Wang H, He B, Wang Y, Xiao J, Wang Y, Zhang Q, Li Y, Cheng Y. Hydrogen-bonding dramatically modulates the gene transfection efficacy of surface-engineered dendrimers. Biomater Sci 2015. [DOI: 10.1039/c4bm00335g] [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]
Abstract
The hydrogen-bond modulation strategy represents a promising tool in the design of highly efficient and less cytotoxic gene materials.
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Affiliation(s)
- Naimin Shao
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Hui Wang
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Bingwei He
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai 200241
- P.R. China
| | - Yu Wang
- The Second Military Medical University
- Changzheng Hospital
- Department of Orthopedic Oncology
- Shanghai
- P. R. China
| | - Jianru Xiao
- The Second Military Medical University
- Changzheng Hospital
- Department of Orthopedic Oncology
- Shanghai
- P. R. China
| | - Yitong Wang
- 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
| | - Yujia Li
- 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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38
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Chang H, Zhang Y, Li L, Cheng Y. Efficient delivery of small interfering RNA into cancer cells using dodecylated dendrimers. J Mater Chem B 2015; 3:8197-8202. [DOI: 10.1039/c5tb01257k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Dodecylated dendrimers show significantly improved gene silencing efficacy after dodecylation. Among the dendrimers, G4-23C12 shows the highest gene knockdown efficacy.
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Affiliation(s)
- Hong Chang
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai
- P. R. China
| | - Yueming Zhang
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai
- P. R. China
| | - Lei Li
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai
- P. R. China
| | - Yiyun Cheng
- Shanghai Key Laboratory of Regulatory Biology
- School of Life Sciences
- East China Normal University
- Shanghai
- P. R. China
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39
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Wang M, Cheng Y. The effect of fluorination on the transfection efficacy of surface-engineered dendrimers. Biomaterials 2014; 35:6603-13. [DOI: 10.1016/j.biomaterials.2014.04.065] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Accepted: 04/16/2014] [Indexed: 01/01/2023]
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Fluorinated poly(propylenimine) dendrimers as gene vectors. Biomaterials 2014; 35:5407-5413. [DOI: 10.1016/j.biomaterials.2014.03.040] [Citation(s) in RCA: 114] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/17/2014] [Indexed: 12/13/2022]
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Targeted delivery of Dicer-substrate siRNAs using a dual targeting peptide decorated dendrimer delivery system. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2014; 10:1627-36. [PMID: 24965758 DOI: 10.1016/j.nano.2014.05.008] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 05/07/2014] [Accepted: 05/12/2014] [Indexed: 01/09/2023]
Abstract
UNLABELLED Small interfering RNAs (siRNA) are emerging as novel therapeutic agents, providing competent delivery systems that are available. Dendrimers, a special family of synthetic macromolecules, represent an exciting delivery platform by virtue of their well-defined dendritic structure and unique multivalency and cooperativity confined within a nanoscale volume. Here, we report a Dicer-substrate siRNA (dsiRNA) which, when delivered using a structurally flexible triethanolamine-core poly(amidoamine) dendrimer of generation 5 as the nanocarrier, gives rise to a much greater RNAi response than that produced with conventional siRNA. Further decoration of the dsiRNA/dendrimer complexes with a dual targeting peptide simultaneously promoted cancer cell targeting through interacting with integrins and cell penetration via the interaction with neuropilin-1 receptors, which led to improved gene silencing and anticancer activity. Altogether, our results disclosed here open a new avenue for therapeutic implementation of RNAi using dendrimer nanovector based targeted delivery. FROM THE CLINICAL EDITOR This study demonstrates superior therapeutic properties of siRNA when combined with a dendrimer-based targeted nano-delivery system. Similar approaches may eventually gain clinical utility following additional studies determining safety and efficacy.
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Kala S, Mak ASC, Liu X, Posocco P, Pricl S, Peng L, Wong AST. Combination of Dendrimer-Nanovector-Mediated Small Interfering RNA Delivery to Target Akt with the Clinical Anticancer Drug Paclitaxel for Effective and Potent Anticancer Activity in Treating Ovarian Cancer. J Med Chem 2014; 57:2634-42. [DOI: 10.1021/jm401907z] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Shashwati Kala
- School
of Biological Sciences, University of Hong Kong, Pokfulam Road, Pokfulam, Hong Kong
| | - Abby Sin Chi Mak
- School
of Biological Sciences, University of Hong Kong, Pokfulam Road, Pokfulam, Hong Kong
| | - Xiaoxuan Liu
- Aix-Marseille University, CNRS, Centre Interdisciplinaire
de Nanoscience de Marseille, CINaM UMR 7325, Marseille Cedex 09, France
| | - Paola Posocco
- Molecular
Simulation Engineering Laboratory (MOSE), Department of Engineering
and Architecture (DEA), University of Trieste, Via Valerio 10, 34127 Trieste, Italy
- Research
Unit MOSE-DEA, National Interuniversity Consortium for Material Science
and Technology (INSTM), University of Trieste, Via Valerio 6, 34127 Trieste, Italy
| | - Sabrina Pricl
- Molecular
Simulation Engineering Laboratory (MOSE), Department of Engineering
and Architecture (DEA), University of Trieste, Via Valerio 10, 34127 Trieste, Italy
- Research
Unit MOSE-DEA, National Interuniversity Consortium for Material Science
and Technology (INSTM), University of Trieste, Via Valerio 6, 34127 Trieste, Italy
| | - Ling Peng
- Aix-Marseille University, CNRS, Centre Interdisciplinaire
de Nanoscience de Marseille, CINaM UMR 7325, Marseille Cedex 09, France
| | - Alice Sze Tsai Wong
- School
of Biological Sciences, University of Hong Kong, Pokfulam Road, Pokfulam, Hong Kong
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Liu C, Liu X, Rocchi P, Qu F, Iovanna JL, Peng L. Arginine-terminated generation 4 PAMAM dendrimer as an effective nanovector for functional siRNA delivery in vitro and in vivo. Bioconjug Chem 2014; 25:521-32. [PMID: 24494983 DOI: 10.1021/bc4005156] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Successful therapeutic implementation of RNA interference critically depends on systems able to safely and efficiently deliver small interfering RNA (siRNA). Dendrimers are emerging as appealing nanovectors for siRNA delivery by virtue of their unique well-defined dendritic nanostructure within which is confined an intriguing cooperativity and multivalency. We have previously demonstrated that structurally flexible triethanolamine (TEA) core poly(amidoamine) (PAMAM) dendrimers of high generations are effective nanovectors for siRNA delivery in vitro and in vivo. In the present study, we have developed arginine-terminated dendrimers with the aim of combining and harnessing the unique siRNA delivery properties of the TEA-core PAMAM dendrimer and the cell-penetrating advantages of the arginine-rich motif. A generation 4 dendrimer of this family (G4Arg) formed stable dendriplexes with siRNA, leading to improved cell uptake of siRNA by comparison with its nonarginine bearing dendrimer counterpart. Moreover, G4Arg was demonstrated to be an excellent nanocarrier for siRNA delivery, yielding potent gene silencing and anticancer effects in prostate cancer models both in vitro and in vivo with no discernible toxicity. Consequently, importing an arginine residue on the surface of a dendrimer is an appealing option to improve delivery efficiency, and at the same time, the dendrimer G4Arg constitutes a highly promising nanovector for efficacious siRNA delivery and holds great potential for further therapeutic applications.
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Affiliation(s)
- Cheng Liu
- State Key Laboratory of Virology, College of Chemistry and Molecular Sciences, Wuhan University , Wuhan 430072, P. R. China
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