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Lu J, Atochina-Vasserman EN, Maurya DS, Sahoo D, Ona N, Reagan EK, Ni H, Weissman D, Percec V. Targeted and Equally Distributed Delivery of mRNA to Organs with Pentaerythritol-Based One-Component Ionizable Amphiphilic Janus Dendrimers. J Am Chem Soc 2023; 145:18760-18766. [PMID: 37606244 DOI: 10.1021/jacs.3c07337] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2023]
Abstract
Delivery of nucleic acids with viral and synthetic vectors has pioneered genetic nanomedicine. Four-component lipid nanoparticles (LNPs) consisting of ionizable lipids, phospholipids, cholesterol, and PEG-conjugated lipids, assembled by microfluidic or T-tube, are the benchmark synthetic vector for delivery of mRNA. One-component multifunctional sequence-defined ionizable amphiphilic Janus dendrimer (IAJD) delivery systems for mRNA were developed by us to complement LNPs. IAJDs consist of multifunctional hydrophilic low-generation dendrons or minidendrons conjugated to hydrophobic dendrons. They were inspired by amphiphilic Janus dendrimers and glycodendrimers. IAJDs coassemble with mRNA into predictable-size vesicles, named dendrimersome nanoparticles (DNPs), by simple injection in acetate buffer, rather than by the complex technology required by LNPs. Assembly of DNPs by simple injection together with sequence design in the hydrophilic and hydrophobic modules of IAJDs endowed rapid screening to access discovery. Molecular design principles for targeted delivery were elaborated when the branching points of IAJDs were constructed from symmetrically and nonsymmetrically substituted plant phenolic acids interconnected by pentaerythritol (PE). Here, we report the first library containing simplified IAJDs constructed in only three steps from symmetrically trialkylated PE in the hydrophobic domain and four different piperazine-based ionizable amines in the hydrophilic part. Rapid coassembly with mRNA and in vivo screening led to the discovery of the two most active IAJDs targeting the spleen, liver, and lymph nodes, one predominantly to the spleen and liver and six delivering equally to the spleen, liver, lung, and lymph nodes. These IAJDs represent the simplest synthetic vectors and the first viral or synthetic system delivering equally to multiple organs.
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Affiliation(s)
- Juncheng Lu
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Elena N Atochina-Vasserman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Devendra S Maurya
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Dipankar Sahoo
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Nathan Ona
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Erin K Reagan
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Houping Ni
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Drew Weissman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
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2
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Lu J, Atochina-Vasserman EN, Maurya DS, Shalihin MI, Zhang D, Chenna SS, Adamson J, Liu M, Shah HUR, Shah H, Xiao Q, Queeley B, Ona NA, Reagan EK, Ni H, Sahoo D, Peterca M, Weissman D, Percec V. Screening Libraries to Discover Molecular Design Principles for the Targeted Delivery of mRNA with One-Component Ionizable Amphiphilic Janus Dendrimers Derived from Plant Phenolic Acids. Pharmaceutics 2023; 15:1572. [PMID: 37376020 DOI: 10.3390/pharmaceutics15061572] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/13/2023] [Accepted: 05/14/2023] [Indexed: 06/29/2023] Open
Abstract
Viral and synthetic vectors to deliver nucleic acids were key to the rapid development of extraordinarily efficient COVID-19 vaccines. The four-component lipid nanoparticles (LNPs), containing phospholipids, PEG-conjugated lipids, cholesterol, and ionizable lipids, co-assembled with mRNA via a microfluidic technology, are the leading nonviral delivery vector used by BioNTech/Pfizer and Moderna to access COVID-19 mRNA vaccines. LNPs exhibit a statistical distribution of their four components when delivering mRNA. Here, we report a methodology that involves screening libraries to discover the molecular design principles required to realize organ-targeted mRNA delivery and mediate activity with a one-component ionizable multifunctional amphiphilic Janus dendrimer (IAJD) derived from plant phenolic acids. IAJDs co-assemble with mRNA into monodisperse dendrimersome nanoparticles (DNPs) with predictable dimensions, via the simple injection of their ethanol solution in a buffer. The precise location of the functional groups in one-component IAJDs demonstrated that the targeted organs, including the liver, spleen, lymph nodes, and lung, are selected based on the hydrophilic region, while activity is associated with the hydrophobic domain of IAJDs. These principles, and a mechanistic hypothesis to explain activity, simplify the synthesis of IAJDs, the assembly of DNPs, handling, and storage of vaccines, and reduce price, despite employing renewable plant starting materials. Using simple molecular design principles will lead to increased accessibility to a large diversity of mRNA-based vaccines and nanotherapeutics.
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Affiliation(s)
- Juncheng Lu
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Elena N Atochina-Vasserman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Devendra S Maurya
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Muhammad Irhash Shalihin
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Dapeng Zhang
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Srijay S Chenna
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Jasper Adamson
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Matthew Liu
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Habib Ur Rehman Shah
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Honey Shah
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Qi Xiao
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Bryn Queeley
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Nathan A Ona
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Erin K Reagan
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Houping Ni
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Dipankar Sahoo
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Mihai Peterca
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Drew Weissman
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
| | - Virgil Percec
- Roy & Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, PA 19104-6323, USA
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3
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Abosalha AK, Ahmad W, Boyajian J, Islam P, Ghebretatios M, Schaly S, Thareja R, Arora K, Prakash S. A comprehensive update of siRNA delivery design strategies for targeted and effective gene silencing in gene therapy and other applications. Expert Opin Drug Discov 2023; 18:149-161. [PMID: 36514963 DOI: 10.1080/17460441.2022.2155630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION RNA interference (RNAi) using small interfering RNA (siRNA) is a promising strategy to control many genetic disorders by targeting the mRNA of underlying genes and degrade it. However, the delivery of siRNA to targeted organs is highly restricted by several intracellular and extracellular barriers. AREAS COVERED This review discusses various design strategies developed to overcome siRNA delivery obstacles. The applied techniques involve chemical modification, bioconjugation to specific ligands, and carrier-mediated strategies. Nanotechnology-based systems like liposomes, niosomes, solid lipid nanoparticles (SLNs), dendrimers, and polymeric nanoparticles (PNs) are also discussed. EXPERT OPINION Although the mechanism of siRNA as a gene silencer is well-established, only a few products are available as therapeutics. There is a great need to develop and establish siRNA delivery systems that protects siRNAs and delivers them efficiently to the desired sitesare efficient and capable of targeted delivery. Several diseases are reported to be controlled by siRNA at their early stages. However, their targeted delivery is a daunting challenge.
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Affiliation(s)
- Ahmed Khaled Abosalha
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada.,Pharmaceutical Technology department, Faculty of Pharmacy, Tanta University, Tanta, Egypt
| | - Waqar Ahmad
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Jacqueline Boyajian
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Paromita Islam
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Merry Ghebretatios
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Sabrina Schaly
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Rahul Thareja
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Karan Arora
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
| | - Satya Prakash
- Biomedical Technology and Cell Therapy Research Laboratory, Department of Biomedical Engineering, Faculty of Medicine, McGill University H3A 2B4, Montreal, Quebec, Canada
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Sohrabi M, Babaei Z, Haghpanah V, Larijani B, Abbasi A, Mahdavi M. Recent advances in gene therapy-based cancer monotherapy and synergistic bimodal therapy using upconversion nanoparticles: Structural and biological aspects. Biomed Pharmacother 2022; 156:113872. [DOI: 10.1016/j.biopha.2022.113872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 10/06/2022] [Accepted: 10/13/2022] [Indexed: 11/02/2022] Open
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5
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de la Torre C, Játiva P, Posadas I, Manzanares D, Blanco JLJ, Mellet CO, Fernández JMG, Ceña V. A β-Cyclodextrin-Based Nanoparticle with Very High Transfection Efficiency Unveils siRNA-Activated TLR3 Responses in Human Prostate Cancer Cells. Pharmaceutics 2022; 14:2424. [PMID: 36365241 PMCID: PMC9692777 DOI: 10.3390/pharmaceutics14112424] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/07/2022] [Accepted: 11/08/2022] [Indexed: 10/18/2023] Open
Abstract
Synthetic double-stranded small interfering RNAs (siRNAs) mimic interference RNAs (RNAi) and can bind target mRNAs with a high degree of specificity, leading to selective knockdown of the proteins they encode. However, siRNAs are very labile and must be both protected and transported by nanoparticles to be efficiently delivered into cells. In this work, we used a Janus-type polycationic amphiphilic β-cyclodextrin derivative to efficiently transfect siRNAs targeting mRNAs encoding mitogen-activated protein kinase (p42-MAPK) or Ras homolog enriched in brain (Rheb) into different cancer cell lines as well as astrocytes. We took advantage of this high transfection efficiency to simultaneously knock down p42-MAPK and Rheb to boost docetaxel (DTX)-mediated toxicity in two human prostate cancer cell lines (LNCaP and PC3). We found that double knockdown of p42-MAPK and Rheb increased DTX-toxicity in LNCaP but not in PC3 cells. However, we also observed the same effect when scramble siRNA was used, therefore pointing to an off-target effect. Indeed, we found that the siRNA we used in this work induced toll-like receptor 3 activation, leading to β-interferon production and caspase activation. We believe that this mechanism could be very useful as a general strategy to elicit an immune response against prostate cancer cells.
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Affiliation(s)
- Cristina de la Torre
- Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La Mancha, 02006 Albacete, Spain
- Centro de Investigación Biomédica En Red (CIBER), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Pablo Játiva
- Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La Mancha, 02006 Albacete, Spain
- Centro de Investigación Biomédica En Red (CIBER), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Inmaculada Posadas
- Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La Mancha, 02006 Albacete, Spain
- Centro de Investigación Biomédica En Red (CIBER), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Darío Manzanares
- Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La Mancha, 02006 Albacete, Spain
- Centro de Investigación Biomédica En Red (CIBER), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - José L. Jiménez Blanco
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | | | - Valentín Ceña
- Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La Mancha, 02006 Albacete, Spain
- Centro de Investigación Biomédica En Red (CIBER), Instituto de Salud Carlos III, 28029 Madrid, Spain
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6
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Quinteros MA, Tolosa J, García-Martínez JC, Páez PL, Paraje MG. Synergic activity of oligostyrylbenzenes with amphotericin B against Candida tropicalis biofilms. Yeast 2021; 38:634-645. [PMID: 34596268 DOI: 10.1002/yea.3672] [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: 12/21/2020] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 11/12/2022] Open
Abstract
Antimicrobial drug resistance is a serious challenge in clinical settings worldwide, with biofilm formation having been associated with this problem. In the present study, the synergism of oligostyrylbenzene (OSB) compounds in combination with amphotericin B (AmB) against Candida tropicalis biofilms was investigated. In addition, the toxicity in human blood cells was determined. Synergistic combinations of OSBs and AmB were evaluated to consider future effects of OSBs in vivo. The checkerboard microdilution method was used to study the interactions of one anionic (1) and two cationic (2 and 3) OSBs with AmB. We investigated the effects of OSBs on reactive oxygen species (ROS) and the levels of the reactive nitrogen intermediates (RNIs). The cellular stress affected biofilm growth through an accumulation of ROS and RNI, at synergistic concentrations of OSBs and AmB. Furthermore, significant surface topography differences were noted upon treatment with the OSB 2/AmB combination, using confocal laser scanning microscopy in conjunction with the image analysis software COMSTAT. The results revealed a low toxicity to leukocytes and red blood cells at synergistic combinations of cationic OSBs with AmB. These findings demonstrated the antibiofilm effects of OSBs and the synergism of AmB with cationic OSBs against biofilms of C. tropicalis for the first time.
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Affiliation(s)
- Melisa A Quinteros
- Multidisciplinary Institute of Plant Biology (IMBIV), National Council for Scientific and Technical Research (CONICET), Córdoba, Argentina.,Deparment of Microbiology, Faculty of Exact, Physical and Natural Sciences, National University of Córdoba, Córdoba, Argentina
| | - Juan Tolosa
- Albacete Faculty of Pharmacy, Regional Center for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Joaquín C García-Martínez
- Albacete Faculty of Pharmacy, Regional Center for Biomedical Research, University of Castilla-La Mancha, Ciudad Real, Spain
| | - Paulina L Páez
- Deparment of Microbiology, Faculty of Exact, Physical and Natural Sciences, National University of Córdoba, Córdoba, Argentina.,Department of Pharmaceutical Sciences, Faculty of Chemical Sciences, National University of Córdoba, Córdoba, Argentina.,Research and Development Unit in Pharmaceutical Technology (UNITEFA), National Council for Scientific and Technical Research (CONICET), Córdoba, Argentina
| | - María G Paraje
- Multidisciplinary Institute of Plant Biology (IMBIV), National Council for Scientific and Technical Research (CONICET), Córdoba, Argentina.,Deparment of Microbiology, Faculty of Exact, Physical and Natural Sciences, National University of Córdoba, Córdoba, Argentina
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7
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Domínguez R, Moral M, Fernández-Liencres MP, Peña-Ruiz T, Tolosa J, Canales-Vázquez J, García-Martínez JC, Navarro A, Garzón-Ruiz A. Understanding the Driving Mechanisms of Enhanced Luminescence Emission of Oligo(styryl)benzenes and Tri(styryl)-s-triazine. Chemistry 2020; 26:3373-3384. [PMID: 31967698 DOI: 10.1002/chem.201905336] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/10/2020] [Indexed: 01/23/2023]
Abstract
This work is focused on unraveling the mechanisms responsible for the aggregation-induced enhanced emission and solid-state luminescence enhancement effects observed in star-shaped molecules based on 1,3,5-tris(styryl)benzene and tri(styryl)-s-triazine cores. To achieve this, the photophysical properties of this set of molecules were analyzed in three states: free molecules, molecular aggregates in solution, and the solid state. Different spectroscopy and microscopy experiments and DFT calculations were conducted to scrutinize the causative mechanisms of the luminescence enhancement phenomenon observed in some experimental conditions. Enhanced luminescence emission was interpreted in the context of short- and long-range excitonic coupling mechanisms and the restriction of intramolecular vibrations. Additionally, we found that the formation of π-stacking aggregates could block E/Z photoisomerization through torsional motions between phenylene rings in the excited state, and hence, enhancing the luminescence of the system.
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Affiliation(s)
- Rocío Domínguez
- Department of Inorganic, Organic and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain.,Regional Center for Biomedical Research (CRIB), University of Castilla-La Mancha, Almansa s/n, 02071, Albacete, Spain
| | - Mónica Moral
- Renewable Energy Research Institute, University of Castilla-La Mancha, Paseo de la Investigación 1, 02071, Albacete, Spain
| | - M Paz Fernández-Liencres
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Tomás Peña-Ruiz
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Juan Tolosa
- Department of Inorganic, Organic and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain.,Regional Center for Biomedical Research (CRIB), University of Castilla-La Mancha, Almansa s/n, 02071, Albacete, Spain
| | - Jesús Canales-Vázquez
- Renewable Energy Research Institute, University of Castilla-La Mancha, Paseo de la Investigación 1, 02071, Albacete, Spain
| | - Joaquín C García-Martínez
- Department of Inorganic, Organic and Biochemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain.,Regional Center for Biomedical Research (CRIB), University of Castilla-La Mancha, Almansa s/n, 02071, Albacete, Spain
| | - Amparo Navarro
- Department of Physical and Analytical Chemistry, Faculty of Experimental Sciences, University of Jaén, Campus Las Lagunillas, 23071, Jaén, Spain
| | - Andrés Garzón-Ruiz
- Department of Physical Chemistry, Faculty of Pharmacy, University of Castilla-La Mancha, José María Sánchez Ibañez s/n, 02071, Albacete, Spain
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8
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Stenström P, Manzanares D, Zhang Y, Ceña V, Malkoch M. Evaluation of Amino-Functional Polyester Dendrimers Based on Bis-MPA as Nonviral Vectors for siRNA Delivery. Molecules 2018; 23:E2028. [PMID: 30110914 PMCID: PMC6222295 DOI: 10.3390/molecules23082028] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/08/2018] [Accepted: 08/10/2018] [Indexed: 11/23/2022] Open
Abstract
Herein, we present the first evaluation of cationic dendrimers based on 2,2-bis(methylol)propionic acid (bis-MPA) as nonviral vectors for transfection of short interfering RNA (siRNA) in cell cultures. The study encompassed dendrimers of generation one to four (G1⁻G4), modified to bear 6⁻48 amino end-groups, where the G2⁻G4 proved to be capable of siRNA complexation and protection against RNase-mediated degradation. The dendrimers were nontoxic to astrocytes, glioma (C6), and glioblastoma (U87), while G3 and G4 exhibited concentration dependent toxicity towards primary neurons. The G2 showed no toxicity to primary neurons at any of the tested concentrations. Fluorescence microscopy experiments suggested that the dendrimers are highly efficient at endo-lysosomal escape since fluorescently labeled dendrimers were localized specifically in mitochondria, and diffuse cytosolic distribution of fluorescent siRNA complexed by dendrimers was observed. This is a desired feature for intracellular drug delivery, since the endocytic pathway otherwise transfers the drugs into lysosomes where they can be degraded without reaching their intended target. siRNA-transfection was successful in C6 and U87 cell lines using the G3 and G4 dendrimers followed by a decrease of approximately 20% of target protein p42-MAPK expression.
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Affiliation(s)
- Patrik Stenström
- Fiber and Polymer Technology, KTH Royal Institute of Technology, 10044 Stockholm, Sweden.
| | - Dario Manzanares
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, 02006 Albacete, Spain.
- CIBERNED, Instituto de Salud Carlos III, 28029 Madrid, Spain.
| | - Yuning Zhang
- Fiber and Polymer Technology, KTH Royal Institute of Technology, 10044 Stockholm, Sweden.
| | - Valentin Ceña
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, 02006 Albacete, Spain.
- CIBERNED, Instituto de Salud Carlos III, 28029 Madrid, Spain.
| | - Michael Malkoch
- Fiber and Polymer Technology, KTH Royal Institute of Technology, 10044 Stockholm, Sweden.
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9
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Dzmitruk V, Apartsin E, Ihnatsyeu-Kachan A, Abashkin V, Shcharbin D, Bryszewska M. Dendrimers Show Promise for siRNA and microRNA Therapeutics. Pharmaceutics 2018; 10:E126. [PMID: 30096839 PMCID: PMC6161126 DOI: 10.3390/pharmaceutics10030126] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 12/24/2022] Open
Abstract
The lack of an appropriate intracellular delivery system for therapeutic nucleic acids (TNAs) is a major problem in molecular biology, biotechnology, and medicine. A relatively new class of highly symmetrical hyperbranched polymers, called dendrimers, shows promise for transporting small TNAs into both cells and target tissues. Dendrimers have intrinsic advantages for this purpose: their physico-chemical and biological properties can be controlled during synthesis, and they are able to transport large numbers of TNA molecules that can specifically suppress the expression of single or multiple targeted genes. Numerous chemical modifications of dendrimers extend the biocompatibility of synthetic materials and allow targeted vectors to be designed for particular therapeutic purposes. This review summarizes the latest experimental data and trends in the medical application of various types of dendrimers and dendrimer-based nanoconstructions as delivery systems for short small interfering RNAs (siRNAs) and microRNAs at the cell and organism levels. It provides an overview of the structural features of dendrimers, indicating their advantages over other types of TNA transporters.
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Affiliation(s)
- Volha Dzmitruk
- Institute of Biophysics and Cell Engineering of NASB, 220072 Minsk, Belarus.
| | - Evgeny Apartsin
- Institute of Chemical Biology and Fundamental Medicine SB RAS, 630090 Novosibirsk, Russia.
| | - Aliaksei Ihnatsyeu-Kachan
- Institute of Biophysics and Cell Engineering of NASB, 220072 Minsk, Belarus.
- Center for Theragnosis, Biomedical Research Institute, Korea Institute of Science and Technology (KIST), 02972 Seoul, Korea.
| | - Viktar Abashkin
- Institute of Biophysics and Cell Engineering of NASB, 220072 Minsk, Belarus.
| | - Dzmitry Shcharbin
- Institute of Biophysics and Cell Engineering of NASB, 220072 Minsk, Belarus.
| | - Maria Bryszewska
- Department of General Biophysics, Faculty of Biology and Environmental Protection, University of Lodz, 90-236 Lodz, Poland.
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10
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Manzanares D, Araya-Durán I, Gallego-Yerga L, Játiva P, Márquez-Miranda V, Canan J, Jiménez Blanco JL, Mellet CO, González-Nilo FD, García Fernández JM, Ceña V. Molecular determinants for cyclo-oligosaccharide-based nanoparticle-mediated effective siRNA transfection. Nanomedicine (Lond) 2017. [PMID: 28621615 DOI: 10.2217/nnm-2017-0123] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
AIM To study the structural requirements that a cyclooligosaccharide-based nanoparticle must fulfill to be an efficient siRNA transfection vector. MATERIALS & METHODS siRNA protection from degradation by RNAses, transfection efficiency and the thermodynamic parameters of the nanoparticle/siRNA interactions were studied on pairs of amphiphilic molecules using biochemical techniques and molecular dynamics. RESULTS The lower the siRNA solvent accessible surface area in the presence of the nanoparticle, higher the protection from RNAse-mediated degradation in the corresponding nanocomplex; a moderate nanoparticle/siRNA binding energy value further facilitates reversible complexation and binding to the target cellular mRNA. CONCLUSION The use, in advance, of these parameters will provide a useful indication of the potential of a molecular nanoparticle as siRNA transfecting vector.
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Affiliation(s)
- Darío Manzanares
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, Albacete, Spain.,CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
| | - Ingrid Araya-Durán
- Universidad Andres Bello, Facultad de Ciencias Biológicas, Center for Bioinformatics & Integrative Biology (CBIB), Av. República 239, Santiago, 8370146, Chile
| | - Laura Gallego-Yerga
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Profesor García González 1, 41012-Sevilla Sevilla, Spain
| | - Pablo Játiva
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, Albacete, Spain.,CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
| | - Valeria Márquez-Miranda
- Universidad Andres Bello, Facultad de Ciencias Biológicas, Center for Bioinformatics & Integrative Biology (CBIB), Av. República 239, Santiago, 8370146, Chile
| | - Jonathan Canan
- Universidad Andres Bello, Facultad de Ciencias Biológicas, Center for Bioinformatics & Integrative Biology (CBIB), Av. República 239, Santiago, 8370146, Chile
| | - José Luis Jiménez Blanco
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Profesor García González 1, 41012-Sevilla Sevilla, Spain
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, C/Profesor García González 1, 41012-Sevilla Sevilla, Spain
| | - Fernando Danilo González-Nilo
- Universidad Andres Bello, Facultad de Ciencias Biológicas, Center for Bioinformatics & Integrative Biology (CBIB), Av. República 239, Santiago, 8370146, Chile.,Fundación Fraunhofer Chile Research, Las Condes, 7550296, Chile.,Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, 2360102, Chile
| | - José Manuel García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, Vda. Américo Vespucio 49, 41092 Sevilla, Spain
| | - Valentín Ceña
- Unidad Asociada Neurodeath, Universidad de Castilla-La Mancha, Albacete, Spain.,CIBERNED, Instituto de Salud Carlos III, Madrid, Spain
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11
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Abstract
Gene therapy is an important therapeutic strategy in the treatment of a wide range of genetic disorders. Polymers forming stable complexes with nucleic acids (NAs) are non-viral gene carriers. The self-assembly of polymers and nucleic acids is typically a complex process that involves many types of interaction at different scales. Electrostatic interaction, hydrophobic interaction, and hydrogen bonds are three important and prevalent interactions in the polymer/nucleic acid system. Electrostatic interactions and hydrogen bonds are the main driving forces for the condensation of nucleic acids, while hydrophobic interactions play a significant role in the cellular uptake and endosomal escape of polymer-nucleic acid complexes. To design high-efficiency polymer candidates for the DNA and siRNA delivery, it is necessary to have a detailed understanding of the interactions between them in solution. In this chapter, we survey the roles of the three important interactions between polymers and nucleic acids during the formation of polyplexes and summarize recent understandings of the linear polyelectrolyte-NA interactions and dendrimer-NA interactions. We also review recent progress optimizing the gene delivery system by tuning these interactions.
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12
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Posadas I, Alonso-Moreno C, Bravo I, Carrillo-Hermosilla F, Garzón A, Villaseca N, López-Solera I, Albaladejo J, Ceña V. Synthesis, characterization, DNA interactions and antiproliferative activity on glioblastoma of iminopyridine platinum(II) chelate complexes. J Inorg Biochem 2017; 168:46-54. [DOI: 10.1016/j.jinorgbio.2016.11.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 11/22/2016] [Accepted: 11/30/2016] [Indexed: 12/21/2022]
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13
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Second Generation Amphiphilic Poly-Lysine Dendrons Inhibit Glioblastoma Cell Proliferation without Toxicity for Neurons or Astrocytes. PLoS One 2016; 11:e0165704. [PMID: 27832093 PMCID: PMC5104433 DOI: 10.1371/journal.pone.0165704] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Accepted: 10/17/2016] [Indexed: 02/08/2023] Open
Abstract
Glioblastomas are the most common malignant primary brain tumours in adults and one of the most aggressive and difficult-to-treat cancers. No effective treatment exits actually for this tumour and new therapeutic approaches are needed for this disease. One possible innovative approach involves the nanoparticle-mediated specific delivery of drugs and/or genetic material to glioblastoma cells where they can provide therapeutic benefits. In the present work, we have synthesised and characterised several second generation amphiphilic polylysine dendrons to be used as siRNA carriers. We have found that, in addition to their siRNA binding properties, these new compounds inhibit the proliferation of two glioblastoma cell lines while being nontoxic for non-tumoural central nervous system cells like neurons and glia, cell types that share the anatomical space with glioblastoma cells during the course of the disease. The selective toxicity of these nanoparticles to glioblastoma cells, as compared to neurons and glial cells, involves mitochondrial depolarisation and reactive oxygen species production. This selective toxicity, together with the ability to complex and release siRNA, suggests that these new polylysine dendrons might offer a scaffold in the development of future nanoparticles designed to restrict the proliferation of glioblastoma cells.
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14
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Arami S, Rashidi MR, Mahdavi M, Fathi M, Entezami AA. Synthesis and characterization of Fe3O4-PEG-LAC-chitosan-PEI nanoparticle as a survivin siRNA delivery system. Hum Exp Toxicol 2016; 36:227-237. [DOI: 10.1177/0960327116646618] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The limited effectiveness of the conventional methods for cancer treatment makes the researchers to find novel safe and effective therapeutic strategies. One of these strategies is to use small interfering RNAs (siRNAs). A major challenge here is the siRNA delivery into the cells. The purpose of this study was to design and prepare a biocompatible, biodegradable, and safe nanosized particle for siRNA delivery into human breast cancer MCF-7 and leukemia K562 cells. Chemically synthesized magnetic nanoparticles containing polyethyleneglycol-lactate polymer (PEG-LAC), chitosan, and polyethyleneimine (PEI) were successfully prepared and used as a gene delivery vehicle. The nanoparticles were characterized by Fourier transform infrared spectroscopy and zeta potential. The Fe3O4-PEG-LAC-chitosan-PEI nanoparticle showed efficient and stable survivin siRNA loading in gel retardation assay. The cytotoxicity of the prepared nanoparticle was studied using 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2H-tetrazolium bromide assay and was compared with that of mitoxantrone (MTX) in combination with the prepared siRNA delivery system to evaluate the possible synergic effect of MTX and survivin siRNA. The nanoparticles with and without noncomplementary siRNA showed low toxicity against both cell lines; however, a twofold decrease was observed in cell survival percent after MTX addition to MCF-7 cells treated with either nanoparticle itself or complexed with noncomplementary siRNA. While survivin siRNA nanoplex caused threefold decrease in the cell survival percent, its combination with MTX did not result in a significant increase in the cytotoxic effect. Therefore, Fe3O4-PEG-LAC-chitosan-PEI nanoparticle should be considered as a potential carrier for enhanced survivin siRNA delivery into MCF-7 and K562 cells.
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Affiliation(s)
- S Arami
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
| | - MR Rashidi
- Research Center for Pharmaceutical Nanotechnology, Tabriz University of Medical Sciences, Tabriz, Iran
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - M Mahdavi
- Department of Biology, Faculty of Natural Science, University Of Tabriz, Tabriz, Iran
| | - M Fathi
- Laboratory of Polymer, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
| | - AA Entezami
- Laboratory of Polymer, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
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15
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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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16
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Guerra J, Cantillo D, Kappe CO. Visible-light photoredox catalysis using a macromolecular ruthenium complex: reactivity and recovery by size-exclusion nanofiltration in continuous flow. Catal Sci Technol 2016. [DOI: 10.1039/c6cy00070c] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A macromolecular Ru(bpy)32+ based dendrimer can be used as an efficient photoredox catalyst, retrieved from the reaction mixture by organic solvent nanofiltration and reutilized for further reactions.
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Affiliation(s)
- Javier Guerra
- Institute of Chemistry
- University of Graz
- NAWI Graz
- A-8010 Graz
- Austria
| | - David Cantillo
- Institute of Chemistry
- University of Graz
- NAWI Graz
- A-8010 Graz
- Austria
| | - C. Oliver Kappe
- Institute of Chemistry
- University of Graz
- NAWI Graz
- A-8010 Graz
- Austria
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17
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Dumitru AC, Herruzo ET, Rausell E, Ceña V, Garcia R. Unbinding forces and energies between a siRNA molecule and a dendrimer measured by force spectroscopy. NANOSCALE 2015; 7:20267-20276. [PMID: 26580848 DOI: 10.1039/c5nr04906g] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We have measured the intermolecular forces between small interference RNA (siRNA) and polyamidoamine dendrimers at the single molecular level. A single molecule force spectroscopy approach has been developed to measure the unbinding forces and energies between a siRNA molecule and polyamidoamine dendrimers deposited on a mica surface in a buffer solution. We report three types of unbinding events which are characterized by forces and free unbinding energies, respectively, of 28 pN, 0.709 eV; 38 pN, 0.722 eV; and 50 pN, 0.724 eV. These events reflect different possible electrostatic interactions between the positive charges of one or two dendrimers and the negatively charged phosphate groups of a single siRNA. We have evidence of a high binding affinity of siRNA towards polyamidoamine dendrimers that leads to a 45% probability of measuring specific unbinding events.
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Affiliation(s)
- Andra C Dumitru
- Instituto de Ciencia de Materiales de Madrid, CSIC, c/Sor Juana Ines de la Cruz 3, 28049 Madrid, Spain.
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18
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Yang H. Targeted nanosystems: Advances in targeted dendrimers for cancer therapy. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 12:309-16. [PMID: 26706410 DOI: 10.1016/j.nano.2015.11.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 11/19/2015] [Accepted: 11/24/2015] [Indexed: 12/18/2022]
Abstract
UNLABELLED Dendrimers possess discrete highly compact nanostructures constituted of successive branched layers. Soon after the inception of dendrimers, recognition of their tunable structures and biologically favorable properties provoked a great enthusiasm in delving deeply into the utility of dendrimers for biomedical and pharmaceutical applications. One of the most important nanotechnology applications is the development of nanomedicines for targeted cancer therapies. Tremendous success in targeted therapies has been achieved with the use of dendrimer-based nanomedicines. This article provides a concise review on latest advances in the utility of dendrimers in immunotherapies and hormone therapies. FROM THE CLINICAL EDITOR Much basic and clinical research has been done since the invention of dendrimers, which are highly branched nano-sized molecules with the ability to act as carriers in nanomedicine. In this concise review article, the authors highlighted the current use of dendrimers in immunotherapies and hormone therapies in the fight against cancers.
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Affiliation(s)
- Hu Yang
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA; Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA, USA; Massey Cancer Center, Virginia Commonwealth University, Richmond, VA, USA.
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19
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Bromfield SM, Posocco P, Fermeglia M, Tolosa J, Herreros-López A, Pricl S, Rodríguez-López J, Smith DK. Shape-Persistent and Adaptive Multivalency: Rigid Transgeden (TGD) and Flexible PAMAM Dendrimers for Heparin Binding. Chemistry 2014; 20:9666-74. [DOI: 10.1002/chem.201402237] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Indexed: 11/06/2022]
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20
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Bharathi S, Wong PT, Desai A, Lykhytska O, Choe V, Kim H, Thomas TP, Baker JR, Choi SK. Design and mechanistic investigation of oxime-conjugated PAMAM dendrimers as the catalytic scavenger of reactive organophosphate. J Mater Chem B 2014; 2:1068-1078. [DOI: 10.1039/c3tb21267j] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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21
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Efficient targeted pDNA/siRNA delivery with folate–low-molecular-weight polyethyleneimine–modified pullulan as non-viral carrier. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2014; 34:98-109. [DOI: 10.1016/j.msec.2013.08.035] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Revised: 08/05/2013] [Accepted: 08/27/2013] [Indexed: 01/02/2023]
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22
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Dendrimers as carriers for siRNA delivery and gene silencing: a review. ScientificWorldJournal 2013; 2013:630654. [PMID: 24288498 PMCID: PMC3830781 DOI: 10.1155/2013/630654] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Accepted: 09/19/2013] [Indexed: 12/12/2022] Open
Abstract
RNA interference (RNAi) was first literaturally reported in 1998 and has become rapidly a promising tool for therapeutic applications in gene therapy. In a typical RNAi process, small interfering RNAs (siRNA) are used to specifically downregulate the expression of the targeted gene, known as the term "gene silencing." One key point for successful gene silencing is to employ a safe and efficient siRNA delivery system. In this context, dendrimers are emerging as potential nonviral vectors to deliver siRNA for RNAi purpose. Dendrimers have attracted intense interest since their emanating research in the 1980s and are extensively studied as efficient DNA delivery vectors in gene transfer applications, due to their unique features based on the well-defined and multivalent structures. Knowing that DNA and RNA possess a similar structure in terms of nucleic acid framework and the electronegative nature, one can also use the excellent DNA delivery properties of dendrimers to develop effective siRNA delivery systems. In this review, the development of dendrimer-based siRNA delivery vectors is summarized, focusing on the vector features (siRNA delivery efficiency, cytotoxicity, etc.) of different types of dendrimers and the related investigations on structure-activity relationship to promote safe and efficient siRNA delivery system.
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23
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Cao D, Qin L, Huang H, Feng M, Pan S, Chen J. Transfection activity and the mechanism of pDNA-complexes based on the hybrid of low-generation PAMAM and branched PEI-1.8k. MOLECULAR BIOSYSTEMS 2013; 9:3175-86. [PMID: 24126459 DOI: 10.1039/c3mb70261h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Cationic polymers have been regarded as promising non-viral gene carriers because of their advantages over viral gene vectors, such as low cost, a high level of safety and easy manipulation. However, their poor transfection efficiency in the presence of serum and high toxicity are still limiting issues for clinical applications. In addition, the lack of adequate understanding of the gene delivery mechanism hinders their development to some extent. In this study, new polycations (PAPEs) consisting of a low generation polyamidoamine (PAMAM) core and branched polyethyleneimine (PEI-1.8k) outer layers were synthesized and their transfection activity and mechanism were studied. PAPEs were characterized by FTIR, (1)H NMR and gel permeation chromatography. PAPEs were able to self-assemble with pDNA and form spherical nanoparticles with sizes of 70-204 nm and zeta potentials of 13-33 mV. Importantly, the PAPE-pDNA complexes displayed lower cytotoxicity and higher transfection activity than PEI 25k in various cell lines, specifically in the presence of serum. The transfection mechanism was evaluated by endocytosis inhibition with specific inhibitors, time-dependent transfection, and intracellular trafficking inspection by CLSM. The high levels of transgene expression mediated by PAPEs were attributed to caveolae-mediated cellular uptake, the reduced entry into lysosomes and the entry into the nucleus through mitosis.
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Affiliation(s)
- Duanwen Cao
- Department of Pharmaceutical Science, Nanfang Hospital, Southern Medical University, Guangzhou 510515, and Cardiovascular Laboratory, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
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24
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Jiang R, Lu X, Yang M, Deng W, Fan Q, Huang W. Monodispersed brush-like conjugated polyelectrolyte nanoparticles with efficient and visualized siRNA delivery for gene silencing. Biomacromolecules 2013; 14:3643-52. [PMID: 24040909 DOI: 10.1021/bm401000x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
RNA interference is supposed to be one of the most powerful technologies for suppression of genes and treatment of diverse human diseases while the safe delivery and visualization of siRNA were still challenging. In this text, a novel type of monodispersed conjugated polymer nanoparticles PFNBr with brush-like molecular structure was introduced into siRNA delivery system. The nanoparticles exhibited dual functions conveniently in the delivery system which can not only carry high amount of siRNA to penetrate intracellularly for knocking down targeted mRNA but also act as signal agents for siRNA tracking and cellular imaging. Due to the high density side chains with positive charges and more extended conformation of the spatial structure, PFNBr nanoparticles as nanocarrier for siRNA provided outstanding capture ability (1 mol polymer to more than 32.5 mol siRNA) and enhanced protection capability of siRNA molecules from degradation. Here, it should be noted that the concentration of carrier in the working platform was lowered from the level of μmol/L to nmol/L compared with other conjugated polymer delivery systems due to the outstanding carrying capacity of PFNBr. And meanwhile, this system acquired high gene silence efficiency and good biocompatibility. The proposed complex nanoparticles efficiently transfected siPlk1 into PANC-1 cells and induced high knockdown efficiency for targeted Plk1 mRNA to 23.9% and no significant cytotoxicity of the PFNBr/siRNA complexes was shown. Therefore, this working platform provides a solution to most of the common problems associated with the siRNA delivery, visualization, and therapeutic applications, and keeps a bright outlook for the development of new nucleic acid-based therapeutics and simultaneously for fluorescent bioimaging.
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Affiliation(s)
- Rongcui Jiang
- Institute of Advanced Materials and ‡Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials, Nanjing University of Posts and Telecommunications , Nanjing 210046, China
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25
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Guerra J, Rodrigo AC, Merino S, Tejeda J, García-Martínez JC, Sánchez-Verdú P, Ceña V, Rodríguez-López J. PPV–PAMAM Hybrid Dendrimers: Self-Assembly and Stabilization of Gold Nanoparticles. Macromolecules 2013. [DOI: 10.1021/ma401505k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Javier Guerra
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Ana C. Rodrigo
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Sonia Merino
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Juan Tejeda
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Joaquín C. García-Martínez
- Química
Orgánica Farmacéutica, Facultad de Farmacia, Universidad de Castilla-La Mancha, 02071 Albacete, Spain
| | - Prado Sánchez-Verdú
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
| | - Valentín Ceña
- Unidad
Asociada Neurodeath, Facultad de Medicina, CSIC-Universidad de Castilla-La Mancha, 02006 Albacete, Spain, and CIBERNED, Instituto de Salud Carlos III, 28071 Madrid, Spain
| | - Julián Rodríguez-López
- Área
de Química Orgánica, Facultad de Ciencias y Tecnologías
Químicas, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
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26
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Mignani S, Kazzouli SE, Bousmina M, Majoral JP. Dendrimer space concept for innovative nanomedicine: A futuristic vision for medicinal chemistry. Prog Polym Sci 2013. [DOI: 10.1016/j.progpolymsci.2013.03.003] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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27
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Pérez-Carrión MD, Ceña V. Knocking down HMGB1 using dendrimer-delivered siRNA unveils its key role in NMDA-induced autophagy in rat cortical neurons. Pharm Res 2013; 30:2584-95. [PMID: 23604926 DOI: 10.1007/s11095-013-1049-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 04/02/2013] [Indexed: 12/20/2022]
Abstract
PURPOSE To explore the role of the High Mobility Group Box 1 (HMGB1) protein in NMDA-mediated excitotoxicity in rat cortical neurons. METHODS We knocked down HMGB1 using small-interfering RNA (siRNA) delivered into neurons by means of a dendrimer. We determined autophagy activation by measuring the ratio of light chain 3 protein isoforms (LC3B-I)/LC3B-II and by determining autophagolysosome labeling using the specific marker monodansyl cadaverine. Neuronal toxicity was induced by exposing the neurons to N-methyl-D-aspartate (NMDA) and it was determined by measuring Lactate dehydrogenase and MTT reduction. RESULTS We found that NMDA receptor stimulation induced both neuronal death and autophagy in rat cortical neurons. In addition, NMDA also caused HMGB1 translocation from the neuronal nucleus to the cytoplasm where it formed a complex with Beclin1. HMGB1 was efficiently knocked down using a specific siRNA causing a blockade of NMDA-induced autophagy and potentiating NMDA-induced neuronal death. CONCLUSIONS Our study demonstrates that HMGB1 plays a relevant role in neuronal autophagy regulation and suggest a protective role of autophagy during excitotoxicity. In addition, the dendrimer that we have used here is a good vector for siRNA delivery to neurons allowing lack-of-function studies.
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Affiliation(s)
- María D Pérez-Carrión
- Unidad Asociada Neurodeath, CSIC-Universidad de Castilla-La Mancha Departamento de Ciencias Médicas, Albacete, Spain
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28
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Mignani S, Majoral JP. Dendrimers as macromolecular tools to tackle from colon to brain tumor types: a concise overview. NEW J CHEM 2013. [DOI: 10.1039/c3nj00300k] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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29
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Xu F, Zhong J, Qian X, Li Y, Lin X, Wu Q. Multifunctional poly(amine-ester)-type hyperbranched polymers: lipase-catalyzed green synthesis, characterization, biocompatibility, drug loading and anticancer activity. Polym Chem 2013. [DOI: 10.1039/c3py00156c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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30
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Pergushov DV, Babin IA, Zezin AB, Müller AHE. Water-soluble macromolecular co-assemblies of star-shaped polyelectrolytes. POLYM INT 2012. [DOI: 10.1002/pi.4374] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Dmitry V Pergushov
- Department of Chemistry; MV Lomonosov Moscow State University; 119991; Moscow; Russia
| | - Ivan A Babin
- Department of Chemistry; MV Lomonosov Moscow State University; 119991; Moscow; Russia
| | - Alexander B Zezin
- Department of Chemistry; MV Lomonosov Moscow State University; 119991; Moscow; Russia
| | - Axel HE Müller
- Makromolekulare Chemie II and Bayreuther Zentrum für Kolloide und Grenzflächen; Universität Bayreuth; D-95440; Bayreuth; Germany
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31
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Pérez-Martínez FC, Carrión B, Lucío MI, Rubio N, Herrero MA, Vázquez E, Ceña V. Enhanced docetaxel-mediated cytotoxicity in human prostate cancer cells through knockdown of cofilin-1 by carbon nanohorn delivered siRNA. Biomaterials 2012; 33:8152-9. [PMID: 22858003 DOI: 10.1016/j.biomaterials.2012.07.038] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 07/20/2012] [Indexed: 12/20/2022]
Abstract
We synthesized a non-viral delivery system (f-CNH3) for small interfering RNA (siRNA) by anchoring a fourth-generation polyamidoamine dendrimer (G4-PAMAM) to carbon nanohorns (CNHs). Using this new compound, we delivered a specific siRNA designed to knockdown cofilin-1, a key protein in the regulation of cellular cytoskeleton, to human prostate cancer (PCa) cells. The carbon nanohorn (CNH) derivative was able to bind siRNA and release it in the presence of an excess of the polyanion heparin. Moreover, this hybrid nanomaterial protected the siRNA from RNAse-mediated degradation. Synthetic siRNA delivered to PCa cells by f-CNH3 decreased the cofilin-1 mRNA and protein levels to about 20% of control values. Docetaxel, the drug of choice for the treatment of PCa, produced a concentration-dependent activation of caspase-3, an increase in cell death assessed by lactate dehydrogenase release to the culture medium, cell cycle arrest and inhibition of tumor cell proliferation. All of these toxic effects were potentiated when cofilin-1 was down regulated in these cells by a siRNA delivered by the nanoparticle. This suggests that knocking down certain proteins involved in cancer cell survival and/or proliferation may potentiate the cytotoxic actions of anticancer drugs and it might be a new therapeutic approach to treat tumors.
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Posadas I, Pérez-Martínez FC, Guerra J, Sánchez-Verdú P, Ceña V. Cofilin activation mediates Bax translocation to mitochondria during excitotoxic neuronal death. J Neurochem 2012; 120:515-27. [PMID: 22117609 DOI: 10.1111/j.1471-4159.2011.07599.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
During excitotoxic neuronal death, Bax translocates to the mitochondria where it plays an important role by contributing to the release of proapoptotic factors. However, how Bax translocates to the mitochondria during excitotoxicity remains poorly understood. Herein, our data suggest the presence of a novel signalling mechanism by which NMDA receptor stimulation promotes Bax translocation. This signalling pathway is triggered by dephosphorylation of cofilin. Once dephosphorylated, cofilin might interact physically with Bax acting as a carrier for it, translocating it to the mitochondria, where it contributes to mitochondrial membrane despolarization, permeabilization and to the release of apoptotic factors, thus leading to neuronal death. Lack-of-function studies indicate that only the Slingshot family of phosphatases, more specifically the enzyme Slingshot 1L phosphatase, but not cronophin participates in the cofilin activation process during excitotoxicity. Indeed, cofilin-mediated Bax translocation seems to be a key event in excitotoxic neuronal death as knock down of either cofilin or Slingshot 1L phosphatase has a marked neuroprotective effect on NMDA-mediated neuronal death. This novel biochemical pathway may therefore be a good target to develop future therapeutic molecules for neurodegenerative diseases.
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Affiliation(s)
- Inmaculada Posadas
- Departamento de Ciencias Médicas, Unidad Asociada Neurodeath, CSIC-Universidad de Castilla-La Mancha, Albacete, Spain
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López-Andarias J, Guerra J, Castañeda G, Merino S, Ceña V, Sánchez-Verdú P. Development of Microwave-Assisted Reactions for PAMAM Dendrimer Synthesis. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101717] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Colak DG, Cianga I, Demirkol DO, Kozgus O, Medine EI, Sakarya S, Unak P, Timur S, Yagci Y. The synthesis and targeting of PPP-type copolymers to breast cancer cells: Multifunctional platforms for imaging and diagnosis. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm30692a] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Pérez-Carrión MD, Pérez-Martínez FC, Merino S, Sánchez-Verdú P, Martínez-Hernández J, Luján R, Ceña V. Dendrimer-mediated siRNA delivery knocks down Beclin 1 and potentiates NMDA-mediated toxicity in rat cortical neurons. J Neurochem 2011; 120:259-68. [PMID: 22035151 DOI: 10.1111/j.1471-4159.2011.07556.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Autophagy is an important process which plays a key role in cellular homeostasis by degrading cytoplasmic components in the lysosomes, which facilitates recycling. Alterations to normal autophagy have been linked to excitotoxicity, but the mechanisms governing its signal transduction remain unclear. The aim of this study was to explore the role of autophagy in neuronal excitotoxic death by delivering small interfering RNA (siRNA) to rat cortical neurons, using a dendrimer to silence the autophagy-related gene 6 (beclin 1) and to determine the role of autophagy in excitotoxicity. We have found that the dendrimer is very efficient to deliver siRNA to rat cortical neurons, leading to almost complete removal of the target protein Beclin 1. In addition, NMDA increases autophagy markers, such as the protein levels of Beclin 1, the microtubule-associated light chain 3 (LC3) B-II/LC3B-I ratio, and monodansylcadaverine (MDC) labeling in rat cortical neurons. Moreover, NMDA also increases the formation of autophagosomes observed under a transmission electron microscope. Silencing beclin 1 expression blocked NMDA-induced autophagy. Moreover, Beclin 1 removal potentiated NMDA-induced neuronal death indicating that autophagy plays a protective role during excitotoxicity and suggesting that targeting autophagy might be a helpful therapeutic strategy in neurodegenerative diseases.
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Monteagudo S, Pérez-Martínez FC, Pérez-Carrión MD, Guerra J, Merino S, Sánchez-Verdú MP, Ceña V. Inhibition of p42 MAPK using a nonviral vector-delivered siRNA potentiates the anti-tumor effect of metformin in prostate cancer cells. Nanomedicine (Lond) 2011; 7:493-506. [PMID: 21995500 DOI: 10.2217/nnm.11.61] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
AIMS The aim of this work was to study if a G1-polyamidoamine dendrimer/siRNA dendriplex can remove the p42 MAPK protein in prostate cancer cells and to potentiate the anti-tumoral effect of the antidiabetic drug metformin and taxane docetaxel. MATERIAL & METHODS The dendriplex uptake was studied using flow cytometry analysis. Transfection efficiency was determined by measuring p42 MAPK mRNA and protein levels. Anti-tumoral effects were determined by measuring cellular proliferation and damage. RESULTS The dendriplex siRNA/G1-polyamidoamine dendrimer decreased both p42 MAPK mRNA and protein levels by more than 80%, which potentiates the anti-tumoral effects of metformin. CONCLUSION Blockade of the MAPK pathway using a dendrimer-vehiculized siRNA to block the MAPK signaling pathway in prostate cancer cells can potentiate the anti-tumoral activity of anticancer drugs, indicating that the combination of siRNA-mediated blockade of survival signals plus anti-tumoral therapy might be a useful approach for cancer therapy.
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K SK, R A, Arumugam P, Berchmans S. Synthesis of gold nanoparticles: an ecofriendly approach using Hansenula anomala. ACS APPLIED MATERIALS & INTERFACES 2011; 3:1418-1425. [PMID: 21517037 DOI: 10.1021/am200443j] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
This work describes a bioassisted approach for the preparation of metal nanoparticles using yeast species Hansenula anomala. Gold nanoparticles were prepared using gold salt as the precursor, amine-terminated polyamidoamine dendrimer as the stabilizer, and the extracellular material from H. anomala as the bioreductant. It could also be demonstrated that, using our approach, small molecules such as cysteine can act as stabilizers as well. This synthetic approach offers a greener alternative route to the preparation of gold sols that are devoid of cellular and toxic chemical components. The ability of as-synthesized gold sol to function as biological ink for producing patterns for the analysis of fingerprints and to act as an antimicrobial reagent is evaluated. The generality of this toxin-free synthetic approach to other metals was assessed using palladium and silver.
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Affiliation(s)
- Sathish Kumar K
- Electrodics and Electrocatalysis Division, Central Electro-Chemical Research Institute, Council of Scientific and Industrial Research, Karaikudi 630006, India
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