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Jana P, Samanta K, Ehlers M, Zellermann E, Bäcker S, Stauber RH, Schmuck C, Knauer SK. Impact of Peptide Sequences on Their Structure and Function: Mimicking of Virus-Like Nanoparticles for Nucleic Acid Delivery. Chembiochem 2023; 24:e202200519. [PMID: 36314419 PMCID: PMC10099937 DOI: 10.1002/cbic.202200519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/30/2022] [Indexed: 01/05/2023]
Abstract
We rationally designed a series of amphiphilic hepta-peptides enriched with a chemically conjugated guanidiniocarbonylpyrrole (GCP) unit at the lysine side chain. All peptides are composed of polar (GCP) and non-polar (cyclohexyl alanine) residues but differ in their sequence periodicity, resulting in different secondary as well as supramolecular structures. CD spectra revealed the assembly of β-sheet-, α-helical and random structures for peptides 1, 2 and 3, respectively. Consequently, this enabled the formation of distinct supramolecular assemblies such as fibres, nanorod-like or spherical aggregates. Notably, all three cationic peptides are equipped with the anion-binding GCP unit and thus possess a nucleic acid-binding centre. However, only the helical (2) and the unstructured (3) peptide were able to assemble into small virus-like DNA-polyplexes and effectively deliver DNA into cells. Notably, as both peptides (2 and 3) were also capable of siRNA-delivery, they could be utilized to downregulate expression of the caner-relevant protein Survivin.
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Affiliation(s)
- Poulami Jana
- Department of Chemistry, Kaliachak College Sultanganj, Malda, 732201-, West Bengal, India
| | - Krishnananda Samanta
- Department of Chemistry, Balurghat College Dakshin Dinajpur, 733101-, West Bengal, India
| | - Martin Ehlers
- Organic Chemistry, University of Duisburg-Essen, 45117, Essen, Germany
| | - Elio Zellermann
- Organic Chemistry, University of Duisburg-Essen, 45117, Essen, Germany
| | - Sandra Bäcker
- Molecular Biology, University of Duisburg-Essen, 45117, Essen, Germany
| | - Roland H Stauber
- Molecular and Cellular Oncology, ENT Department, University Mainz Medical Center, 55131, Mainz, Germany
| | - Carsten Schmuck
- Organic Chemistry, University of Duisburg-Essen, 45117, Essen, Germany
| | - Shirley K Knauer
- Molecular Biology, University of Duisburg-Essen, 45117, Essen, Germany
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2
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Non-Viral Delivery of CRISPR/Cas Cargo to the Retina Using Nanoparticles: Current Possibilities, Challenges, and Limitations. Pharmaceutics 2022; 14:pharmaceutics14091842. [PMID: 36145593 PMCID: PMC9503525 DOI: 10.3390/pharmaceutics14091842] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 08/25/2022] [Accepted: 08/29/2022] [Indexed: 12/13/2022] Open
Abstract
The discovery of the CRISPR/Cas system and its development into a powerful genome engineering tool have revolutionized the field of molecular biology and generated excitement for its potential to treat a wide range of human diseases. As a gene therapy target, the retina offers many advantages over other tissues because of its surgical accessibility and relative immunity privilege due to its blood–retinal barrier. These features explain the large advances made in ocular gene therapy over the past decade, including the first in vivo clinical trial using CRISPR gene-editing reagents. Although viral vector-mediated therapeutic approaches have been successful, they have several shortcomings, including packaging constraints, pre-existing anti-capsid immunity and vector-induced immunogenicity, therapeutic potency and persistence, and potential genotoxicity. The use of nanomaterials in the delivery of therapeutic agents has revolutionized the way genetic materials are delivered to cells, tissues, and organs, and presents an appealing alternative to bypass the limitations of viral delivery systems. In this review, we explore the potential use of non-viral vectors as tools for gene therapy, exploring the latest advancements in nanotechnology in medicine and focusing on the nanoparticle-mediated delivery of CRIPSR genetic cargo to the retina.
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Golubeva TS, Cherenko VA, Orishchenko KE. Recent Advances in the Development of Exogenous dsRNA for the Induction of RNA Interference in Cancer Therapy. Molecules 2021; 26:701. [PMID: 33572762 PMCID: PMC7865971 DOI: 10.3390/molecules26030701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Revised: 01/21/2021] [Accepted: 01/24/2021] [Indexed: 11/17/2022] Open
Abstract
Selective regulation of gene expression by means of RNA interference has revolutionized molecular biology. This approach is not only used in fundamental studies on the roles of particular genes in the functioning of various organisms, but also possesses practical applications. A variety of methods are being developed based on gene silencing using dsRNA-for protecting agricultural plants from various pathogens, controlling insect reproduction, and therapeutic techniques related to the oncological disease treatment. One of the main problems in this research area is the successful delivery of exogenous dsRNA into cells, as this can be greatly affected by the localization or origin of tumor. This overview is dedicated to describing the latest advances in the development of various transport agents for the delivery of dsRNA fragments for gene silencing, with an emphasis on cancer treatment.
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Affiliation(s)
- Tatiana S. Golubeva
- Department of Genetic Technologies, Novosibirsk State University, Novosibirsk 630090, Russia; (V.A.C.); (K.E.O.)
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Viktoria A. Cherenko
- Department of Genetic Technologies, Novosibirsk State University, Novosibirsk 630090, Russia; (V.A.C.); (K.E.O.)
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
| | - Konstantin E. Orishchenko
- Department of Genetic Technologies, Novosibirsk State University, Novosibirsk 630090, Russia; (V.A.C.); (K.E.O.)
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk 630090, Russia
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4
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Rathore B, Sunwoo K, Jangili P, Kim J, Kim JH, Huang M, Xiong J, Sharma A, Yang Z, Qu J, Kim JS. Nanomaterial designing strategies related to cell lysosome and their biomedical applications: A review. Biomaterials 2019; 211:25-47. [DOI: 10.1016/j.biomaterials.2019.05.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 05/01/2019] [Accepted: 05/02/2019] [Indexed: 01/04/2023]
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5
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Dutta K, Bochicchio D, Ribbe AE, Alfandari D, Mager J, Pavan GM, Thayumanavan S. Symbiotic Self-Assembly Strategy toward Lipid-Encased Cross-Linked Polymer Nanoparticles for Efficient Gene Silencing. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24971-24983. [PMID: 31264399 DOI: 10.1021/acsami.9b04731] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A novel "symbiotic self-assembly" strategy that integrates the advantages of biocompatible lipids with a structurally robust polymer to efficiently encapsulate and deliver siRNAs is reported. The assembly process is considered to be symbiotic because none of the assembling components are capable of self-assembly but can form well-defined nanostructures in the presence of others. The conditions of the self-assembly process are simple but have been chosen such that it offers the ability to arrive at a system that is noncationic for mitigating carrier-based cytotoxicity, efficiently encapsulate siRNA to minimize cargo loss, be effectively camouflaged to protect the siRNA from nuclease degradation, and efficiently escape the endosome to cause gene knockdown. The lipid-siRNA-polymer (L-siP) nanoassembly formation and its disassembly in the presence of an intracellular trigger have been extensively characterized experimentally and through computational modeling. The complexes have been evaluated for the delivery of four different siRNA molecules in six different cell lines, where an efficient gene knockdown is demonstrated. The reported generalized strategy has the potential to make an impact on the development of a safe and effective delivery agent for RNAi-mediated gene therapy that holds the promise of targeting several hard-to-cure diseases.
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Affiliation(s)
| | - Davide Bochicchio
- Department of Innovative Technologies , University of Applied Sciences and Arts of Southern Switzerland , CH-6928 Manno , Switzerland
| | | | | | | | - Giovanni M Pavan
- Department of Innovative Technologies , University of Applied Sciences and Arts of Southern Switzerland , CH-6928 Manno , Switzerland
- Department of Applied Science and Technology , Politecnico di Torino , Corso Duca degli Abruzzi 24 , 10129 Torino , Italy
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6
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Li H, Liu Q, Crielaard BJ, de Vries JW, Loznik M, Meng Z, Yang X, Göstl R, Herrmann A. Fast, Efficient, and Targeted Liposome Delivery Mediated by DNA Hybridization. Adv Healthc Mater 2019; 8:e1900389. [PMID: 31081288 DOI: 10.1002/adhm.201900389] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 04/26/2019] [Indexed: 12/22/2022]
Abstract
Safety and efficacy, two significant parameters in drug administration, can be improved by site-specific delivery approaches. Here a fast, efficient, and targeted liposome delivery system steered by a DNA hybridization recognition mechanism is presented. For this purpose, lipid-terminated DNA is inserted in both liposome and cell membranes by simple mixing of the components. Cellular accumulation of cargo encapsulated in the liposomal core is substantially enhanced when the DNA sequence on the cell is complementary to that on the liposome. Additionally, in mixed cell populations, liposomes discriminate targets by their complementary DNA sequences. Exposure of cells to low temperature and endocytosis inhibitors suggests a caveolae-dependent endocytosis uptake pathway. Mechanistically, hybridization between DNA strands spatially traps liposomes and cell membranes in close proximity, consequently increases the local liposome concentration, and thereby enhances cellular uptake of liposomes and their payload. This programmable delivery system might contribute to new applications in molecular biology and drug delivery.
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Affiliation(s)
- Hongyan Li
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
- DWI – Leibniz Institute for Interactive Materials Forckenbeckstr. 50 52056 Aachen Germany
| | - Qing Liu
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Bart J. Crielaard
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Jan W. de Vries
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Mark Loznik
- DWI – Leibniz Institute for Interactive Materials Forckenbeckstr. 50 52056 Aachen Germany
- Institute of Technical and Macromolecular ChemistryRWTH Aachen University Worringerweg 2 52074 Aachen Germany
| | - Zhuojun Meng
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
| | - Xintong Yang
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
- DWI – Leibniz Institute for Interactive Materials Forckenbeckstr. 50 52056 Aachen Germany
| | - Robert Göstl
- DWI – Leibniz Institute for Interactive Materials Forckenbeckstr. 50 52056 Aachen Germany
| | - Andreas Herrmann
- Zernike Institute for Advanced MaterialsUniversity of Groningen Nijenborgh 4 9747 AG Groningen The Netherlands
- DWI – Leibniz Institute for Interactive Materials Forckenbeckstr. 50 52056 Aachen Germany
- Institute of Technical and Macromolecular ChemistryRWTH Aachen University Worringerweg 2 52074 Aachen Germany
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7
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Xiang J, Liu X, Zhou Z, Zhu D, Zhou Q, Piao Y, Jiang L, Tang J, Liu X, Shen Y. Reactive Oxygen Species (ROS)-Responsive Charge-Switchable Nanocarriers for Gene Therapy of Metastatic Cancer. ACS APPLIED MATERIALS & INTERFACES 2018; 10:43352-43362. [PMID: 30465424 DOI: 10.1021/acsami.8b13291] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The application of nonviral gene vectors has been limited by their insufficient transfection efficiency because of poor serum stability, high endosomal entrapment, limited intracellular release, and low accumulation in the targeted organelle. It is still challenging to design gene carriers with properties that can overcome all of the barriers. We previously developed a reactive oxygen species (ROS)-responsive cationic polymer, poly[(2-acryloyl)ethyl( p-boronic acid benzyl) diethylammonium bromide] (B-PDEAEA), which switches the charge at high concentrations of intracellular ROS to promote intracellular DNA release. However, its gene-delivery efficiency has been limited by serum instability and lysosomal trapping, and coating with an anionic PEGylated lipid only showed mild enhancement. Herein, we coated the ROS-responsive B-PDEAEA polymer with two cationic lipids to form ROS-responsive lipopolyplexes with integrated properties to overcome multiple delivery barriers. The surface cationic lipids endowed the nanocarrier with improved serum stability, effective cellular uptake, and lysosomal evasion. The interior B-PDEAEA/DNA polyplexes, which were highly stable in the extracellular environment, but quickly dissociated, released DNA, promoted nuclei localization, and achieved efficient transcription. The mechanisms of the ROS-responsive and charge-switchable properties of B-PDEAEA were quantitatively studied. The transfection efficiency and antitumor activity of lipopolyplexes were studied in vitro and in vivo. We found that the ROS-responsive lipopolyplexes effectively delivered therapeutic genes into cell nuclei and caused high tumor inhibition in mice bearing peritoneal or lung metastases.
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Affiliation(s)
| | - Xin Liu
- Center for Stem Cell and Tissue Engineering, School of Medicine , Zhejiang University , Hangzhou 310058 , China
- Zhejiang Xinyue Biotechnology Co. Ltd. , Hangzhou 311121 , China
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8
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Xin X, Pei X, Yang X, Lv Y, Zhang L, He W, Yin L. Rod-Shaped Active Drug Particles Enable Efficient and Safe Gene Delivery. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2017; 4:1700324. [PMID: 29201626 PMCID: PMC5700648 DOI: 10.1002/advs.201700324] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/30/2017] [Indexed: 05/28/2023]
Abstract
Efficient microRNAs (miRNA) delivery into cells is a promising strategy for disease therapy, but is a major challenge because the available conventional nonviral vectors have significant drawbacks. In particular, after these vectors are entrapped in lysosomes, the escape efficiency of genes from lysosomes into the cytosol is less than 2%. Here, a novel approach for lethal-7a (let-7a) replacement therapy using rod-shaped active pure drug nanoparticles (≈130 nm in length, PNPs) with a dramatically high drug-loading of ≈300% as vectors is reported. Importantly, unlike other vectors, the developed PNPs/let-7a complexes (≈178 nm, CNPs) can enter cells and bypass the lysosomal route to localize to the cytosol, achieving efficient intracellular delivery of let-7a and a 50% reduction in expression of the target protein (KRAS). Also, CNPs prolong the t1/2 of blood circulation by ≈threefold and increase tumor accumulation by ≈1.5-2-fold, resulting in significantly improved antitumor efficacies. Additionally, no damage to normal organs is observed following systemic injection of CNPs. In conclusion, rod-shaped active PNPs enable efficient and safe delivery of miRNA with synergistic treatment for disease. This nanoplatform would also offer a viable strategy for the potent delivery of proteins and peptides in vitro and in vivo.
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Affiliation(s)
- Xiaofei Xin
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Xue Pei
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Xin Yang
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Yaqi Lv
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Li Zhang
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Wei He
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
| | - Lifang Yin
- Department of Pharmaceutics, School of PharmacyChina Pharmaceutical UniversityNanjing210009P. R. China
- Key Laboratory of Druggability of BiopharmaceuticsChina Pharmaceutical UniversityNanjing210009P. R. China
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9
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Wang Z, Luo M, Mao C, Wei Q, Zhao T, Li Y, Huang G, Gao J. A Redox-Activatable Fluorescent Sensor for the High-Throughput Quantification of Cytosolic Delivery of Macromolecules. Angew Chem Int Ed Engl 2016; 56:1319-1323. [PMID: 27981718 DOI: 10.1002/anie.201610302] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Indexed: 12/19/2022]
Abstract
Efficient delivery of biomacromolecules (e.g., proteins, nucleic acids) into cell cytosol remains a critical challenge for the development of macromolecular therapeutics or diagnostics. To date, most common approaches to assess cytosolic delivery rely on fluorescent labeling of macromolecules with an "always on" reporter and subcellular imaging of endolysosomal escape by confocal microscopy. This strategy is limited by poor signal-to-noise ratio and only offers low throughput, qualitative information. Herein we describe a quantitative redox-activatable sensor (qRAS) for the real-time monitoring of cytosolic delivery of macromolecules. qRAS-labeled macromolecules are silent (off) inside the intact endocytic organelles, but can be turned on by redox activation after endolysosomal disruption and delivery into the cytosol, thereby greatly improving the detection accuracy. In addition to confocal microscopy, this quantitative sensing technology allowed for a high-throughput screening of a panel of polymer carriers toward efficient cytosolic delivery of model proteins on a plate reader. The simple and versatile qRAS design offers a useful tool for the investigation of new strategies for endolysosomal escape of biomacromolecules to facilitate the development of macromolecular therapeutics for a variety of disease indications.
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Affiliation(s)
- Zhaohui Wang
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Min Luo
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Chengqiong Mao
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Qi Wei
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Tian Zhao
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Yang Li
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Gang Huang
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
| | - Jinming Gao
- Department of Pharmacology, Harold C. Simmons Comprehensive Cancer Center, UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd., Dallas, TX, 75390, USA
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10
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Wang Z, Luo M, Mao C, Wei Q, Zhao T, Li Y, Huang G, Gao J. A Redox‐Activatable Fluorescent Sensor for the High‐Throughput Quantification of Cytosolic Delivery of Macromolecules. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201610302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Zhaohui Wang
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Min Luo
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Chengqiong Mao
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Qi Wei
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Tian Zhao
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Yang Li
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Gang Huang
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
| | - Jinming Gao
- Department of Pharmacology Harold C. Simmons Comprehensive Cancer Center UT Southwestern Medical Center at Dallas 5323 Harry Hines Blvd. Dallas TX 75390 USA
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11
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Kwok A, Eggimann GA, Heitz M, Reymond JL, Hollfelder F, Darbre T. Efficient Transfection of siRNA by Peptide Dendrimer-Lipid Conjugates. Chembiochem 2016; 17:2223-2229. [DOI: 10.1002/cbic.201600485] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Indexed: 12/16/2022]
Affiliation(s)
- Albert Kwok
- Department of Biochemistry; University of Cambridge; 80 Tennis Court Road Cambridge CB2 1GA UK
| | - Gabriela A. Eggimann
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Marc Heitz
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Jean-Louis Reymond
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Florian Hollfelder
- Department of Biochemistry; University of Cambridge; 80 Tennis Court Road Cambridge CB2 1GA UK
| | - Tamis Darbre
- Department of Chemistry and Biochemistry; University of Bern; Freiestrasse 3 3012 Bern Switzerland
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12
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Liu J, Wang R, Ma D, Li Y, Wei C, Xi Z. Branch-PCR Constructed Stable shRNA Transcription Nanoparticles Have Long-Lasting RNAi Effect. Chembiochem 2016; 17:1038-42. [PMID: 26972444 DOI: 10.1002/cbic.201600047] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Indexed: 01/21/2023]
Abstract
RNA interference (RNAi) is a cellular process for gene silencing. Because of poor serum stability, transferring dsRNA directly into the target cells is a challenge. We report a facile and universal strategy to construct short hairpin RNA (shRNA) transcription nanoparticles with multiple shRNA transcription templates by PCR with flexible branched primers (branch-PCR). Compared with conventional linear shRNA transcription templates, these shRNA transcription nanoparticles show excellent stability against digestion by exonuclease III. Importantly, we found that our highly stable shRNA transcription nanoparticles can also be transcribed and thus induce efficient and long-lasting RNAi with picomolar activity in living mammalian cells. These chemically well-defined branch-PCR-generated stable shRNA transcription nanoparticles might facilitate RNAi delivery with a long-lasting RNAi effects.
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Affiliation(s)
- Jianbing Liu
- Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China
| | - Runyu Wang
- Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China
| | - Dejun Ma
- Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China
| | - Yanyan Li
- Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China
| | - Chao Wei
- Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China
| | - Zhen Xi
- Department of Chemical Biology, State Key Laboratory of Elemento-Organic Chemistry, National Engineering Research Center of Pesticide (Tianjin), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin, 300071, China.
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13
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Brown MA, Goel A, Abbas Z. Effect of Electrolyte Concentration on the Stern Layer Thickness at a Charged Interface. Angew Chem Int Ed Engl 2016; 55:3790-4. [PMID: 26880184 DOI: 10.1002/anie.201512025] [Citation(s) in RCA: 159] [Impact Index Per Article: 19.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Indexed: 11/08/2022]
Abstract
The chemistry and physics of charged interfaces is regulated by the structure of the electrical double layer (EDL). Herein we quantify the average thickness of the Stern layer at the silica (SiO2 ) nanoparticle/aqueous electrolyte interface as a function of NaCl concentration following direct measurement of the nanoparticles' surface potential by X-ray photoelectron spectroscopy (XPS). We find the Stern layer compresses (becomes thinner) as the electrolyte concentration is increased. This finding provides a simple and intuitive picture of the EDL that explains the concurrent increase in surface charge density, but decrease in surface and zeta potentials, as the electrolyte concentration is increased.
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Affiliation(s)
- Matthew A Brown
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Switzerland.
| | - Alok Goel
- Laboratory for Surface Science and Technology, Department of Materials, ETH Zürich, Switzerland
| | - Zareen Abbas
- Department of Chemistry and Molecular Biology, University of Gothenburg, Sweden
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14
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Brown MA, Goel A, Abbas Z. Effect of Electrolyte Concentration on the Stern Layer Thickness at a Charged Interface. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201512025] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Matthew A. Brown
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Switzerland
| | - Alok Goel
- Laboratory for Surface Science and Technology; Department of Materials; ETH Zürich; Switzerland
| | - Zareen Abbas
- Department of Chemistry and Molecular Biology; University of Gothenburg; Sweden
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15
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Zhang L, Feng Q, Wang J, Sun J, Shi X, Jiang X. Microfluidic synthesis of rigid nanovesicles for hydrophilic reagents delivery. Angew Chem Int Ed Engl 2015; 54:3952-6. [PMID: 25704675 PMCID: PMC4471572 DOI: 10.1002/anie.201500096] [Citation(s) in RCA: 121] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Revised: 01/25/2015] [Indexed: 01/19/2023]
Abstract
We present a hollow-structured rigid nanovesicle (RNV) fabricated by a multi-stage microfluidic chip in one step, to effectively entrap various hydrophilic reagents inside, without complicated synthesis, extensive use of emulsifiers and stabilizers, and laborious purification procedures. The RNV contains a hollow water core, a rigid poly (lactic-co-glycolic acid) (PLGA) shell, and an outermost lipid layer. The formation mechanism of the RNV is investigated by dissipative particle dynamics (DPD) simulations. The entrapment efficiency of hydrophilic reagents such as calcein, rhodamine B and siRNA inside the hollow water core of RNV is ≈90 %. In comparison with the combination of free Dox and siRNA, RNV that co-encapsulate siRNA and doxorubicin (Dox) reveals a significantly enhanced anti-tumor effect for a multi-drug resistant tumor model.
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Affiliation(s)
- Lu Zhang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and TechnologyNo.11 ZhongGuanCun BeiYiTiao, Beijing, 100190 (P. R. China)
| | - Qiang Feng
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and TechnologyNo.11 ZhongGuanCun BeiYiTiao, Beijing, 100190 (P. R. China)
| | - Jiuling Wang
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of SciencesNo.15 Beisihuanxi Road, Beijing, 100190 (P. R. China)
| | - Jiashu Sun
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and TechnologyNo.11 ZhongGuanCun BeiYiTiao, Beijing, 100190 (P. R. China)
| | - Xinghua Shi
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of SciencesNo.15 Beisihuanxi Road, Beijing, 100190 (P. R. China)
| | - Xingyu Jiang
- Beijing Engineering Research Center for BioNanotechnology & CAS Key Laboratory for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and TechnologyNo.11 ZhongGuanCun BeiYiTiao, Beijing, 100190 (P. R. China)
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Zhang L, Feng Q, Wang J, Sun J, Shi X, Jiang X. Microfluidic Synthesis of Rigid Nanovesicles for Hydrophilic Reagents Delivery. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500096] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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