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Prasher P, Sharma M, Agarwal V, Singh SK, Gupta G, Dureja H, Dua K. Cationic cycloamylose based nucleic acid nanocarriers. Chem Biol Interact 2024; 395:111000. [PMID: 38614318 DOI: 10.1016/j.cbi.2024.111000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 04/02/2024] [Accepted: 04/07/2024] [Indexed: 04/15/2024]
Abstract
Nucleic acid delivery by viral and non-viral methods has been a cornerstone for the contemporary gene therapy aimed at correcting the defective genes, replacing of the missing genes, or downregulating the expression of anomalous genes is highly desirable for the management of various diseases. Ostensibly, it becomes paramount for the delivery vectors to intersect the biological barriers for accessing their destined site within the cellular environment. However, the lipophilic nature of biological membranes and their potential to limit the entry of large sized, charged, hydrophilic molecules thus presenting a sizeable challenge for the cellular integration of negatively charged nucleic acids. Furthermore, the susceptibility of nucleic acids towards the degrading enzymes (nucleases) in the lysosomes present in cytoplasm is another matter of concern for their cellular and nuclear delivery. Hence, there is a pressing need for the identification and development of cationic delivery systems which encapsulate the cargo nucleic acids where the charge facilitates their cellular entry by evading the membrane barriers, and the encapsulation shields them from the enzymatic attack in cytoplasm. Cycloamylose bearing a closed loop conformation presents a robust candidature in this regard owing to its remarkable encapsulating tendency towards nucleic acids including siRNA, CpG DNA, and siRNA. The presence of numerous hydroxyl groups on the cycloamylose periphery provides sites for its chemical modification for the introduction of cationic groups, including spermine, (3-Chloro-2 hydroxypropyl) trimethylammonium chloride (Q188), and diethyl aminoethane (DEAE). The resulting cationic cycloamylose possesses a remarkable transfection efficiency and provides stability to cargo oligonucleotides against endonucleases, in addition to modulating the undesirable side effects such as unwanted immune stimulation. Cycloamylose is known to interact with the cell membranes where they release certain membrane components such as phospholipids and cholesterol thereby resulting in membrane destabilization and permeabilization. Furthermore, cycloamylose derivatives also serve as formulation excipients for improving the efficiency of other gene delivery systems. This review delves into the various vector and non-vector-based gene delivery systems, their advantages, and limitations, eventually leading to the identification of cycloamylose as an ideal candidate for nucleic acid delivery. The synthesis of cationic cycloamylose is briefly discussed in each section followed by its application for specific delivery/transfection of a particular nucleic acid.
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Affiliation(s)
- Parteek Prasher
- Department of Chemistry, University of Petroleum & Energy Studies, Energy Acres, Dehradun, 248007, India.
| | - Mousmee Sharma
- Department of Chemistry, Uttaranchal University, Dehradun, 248007, India
| | - Vipul Agarwal
- Cluster for Advanced Macromolecular Design (CAMD), School of Chemical Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Sachin Kumar Singh
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India; Faculty of Health, Australian Research Center in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, 2007, Australia; School of Medical and Life Sciences, Sunway University, 47500 Sunway City, Malaysia
| | - Gaurav Gupta
- School of Pharmacy, Graphic Era Hill University, Dehradun, 248007, India; Centre of Medical and Bio-allied Health Sciences Research, Ajman University, Ajman 346, United Arab Emirates
| | - Harish Dureja
- Department of Pharmaceutical Sciences, Maharishi Dayanand University, Rohtak, 124001, India
| | - Kamal Dua
- Faculty of Health, Australian Research Center in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, NSW, 2007, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo, NSW, 2007, Australia.
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2
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Padmakumar S, D'Souza A, Parayath NN, Bleier BS, Amiji MM. Nucleic acid therapies for CNS diseases: Pathophysiology, targets, barriers, and delivery strategies. J Control Release 2022; 352:121-145. [PMID: 36252748 DOI: 10.1016/j.jconrel.2022.10.018] [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: 06/23/2022] [Revised: 09/10/2022] [Accepted: 10/10/2022] [Indexed: 11/08/2022]
Abstract
Nucleic acid therapeutics have emerged as one of the very advanced and efficacious treatment approaches for debilitating health conditions, including those diseases affecting the central nervous system (CNS). Precise targeting with an optimal control over gene regulation confers long-lasting benefits through the administration of nucleic acid payloads via viral, non-viral, and engineered vectors. The current review majorly focuses on the development and clinical translational potential of non-viral vectors for treating CNS diseases with a focus on their specific design and targeting approaches. These carriers must be able to surmount the various intracellular and extracellular barriers, to ensure successful neuronal transfection and ultimately attain higher therapeutic efficacies. Additionally, the specific challenges associated with CNS administration also include the presence of blood-brain barrier (BBB), the complex pathophysiological and biochemical changes associated with different disease conditions and the existence of non-dividing cells. The advantages offered by lipid-based or polymeric systems, engineered proteins, particle-based systems coupled with various approaches of neuronal targeting have been discussed in the context of a variety of CNS diseases. The possibilities of rapid yet highly efficient gene modifications rendered by the breakthrough methodologies for gene editing and gene manipulation have also opened vast avenues of research in neuroscience and CNS disease therapy. The current review also underscores the extensive scientific efforts to optimize specialized, efficacious yet non-invasive and safer administration approaches to overcome the therapeutic delivery challenges specifically posed by the CNS transport barriers and the overall obstacles to clinical translation.
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Affiliation(s)
- Smrithi Padmakumar
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA 02115, USA
| | - Anisha D'Souza
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA 02115, USA; Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 20115, USA
| | - Neha N Parayath
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA 02115, USA
| | - Benjamin S Bleier
- Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, MA 20115, USA
| | - Mansoor M Amiji
- Department of Pharmaceutical Sciences, School of Pharmacy, Northeastern University, Boston, MA 02115, USA; Department of Chemical Engineering, College of Engineering, Northeastern University, Boston, MA 02115, USA.
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3
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Pugsley CE, Isaac RE, Warren NJ, Behra JS, Cappelle K, Dominguez-Espinosa R, Cayre OJ. Protection of Double-Stranded RNA via Complexation with Double Hydrophilic Block Copolymers: Influence of Neutral Block Length in Biologically Relevant Environments. Biomacromolecules 2022; 23:2362-2373. [PMID: 35549247 PMCID: PMC9198985 DOI: 10.1021/acs.biomac.2c00136] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
![]()
Interaction between
the anionic phosphodiester backbone of DNA/RNA
and polycations can be exploited as a means of delivering genetic
material for therapeutic and agrochemical applications. In this work,
quaternized poly(2-(dimethylamino)ethyl methacrylate)-block-poly(N,N-dimethylacrylamide) (PQDMAEMA-b-PDMAm) double hydrophilic block copolymers
(DHBCs) were synthesized via reversible addition–fragmentation
chain-transfer (RAFT) polymerization as nonviral delivery vehicles
for double-stranded RNA. The assembly of DHBCs and dsRNA forms distinct
polyplexes that were thoroughly characterized to establish a relationship
between the length of the uncharged poly(N,N-dimethylacrylamide)
(PDMA) block and the polyplex size, complexation efficiency, and colloidal
stability. Dynamic light scattering reveals the formation of smaller
polyplexes with increasing PDMA lengths, while gel electrophoresis
confirms that these polyplexes require higher N/P ratio for full complexation.
DHBC polyplexes exhibit enhanced stability in low ionic strength environments
in comparison to homopolymer-based polyplexes. In vitro enzymatic degradation assays demonstrate that both homopolymer and
DHBC polymers efficiently protect dsRNA from degradation by RNase
A enzyme.
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Affiliation(s)
- Charlotte E Pugsley
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom.,School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - R Elwyn Isaac
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Nicholas J Warren
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Juliette S Behra
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
| | - Kaat Cappelle
- Syngenta Ghent Innovation Center, Technologiepark 30, B-9052 Gent-Zwijnaarde, Belgium
| | - Rosa Dominguez-Espinosa
- Syngenta Jealott's Hill International Research Centre, Bracknell, Berkshire RG42 6EY, England
| | - Olivier J Cayre
- School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, United Kingdom
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4
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Prieto-Costas LA, Milton L, Quiñones-Jurgensen CM, Rivera JM. Screening and Quantification of the Encapsulation of Dyes in Supramolecular Particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12681-12689. [PMID: 34665963 PMCID: PMC9886066 DOI: 10.1021/acs.langmuir.1c02065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The encapsulation of therapeutic agents, such as drugs and vaccines, into colloidal particles offers an attractive strategy to enhance their efficacy. Previously, we reported the development of guanosine-based supramolecular colloidal particles suitable for encapsulating a broad array of guests ranging from small molecule drugs, like doxorubicin, to proteins, like GFP. Many biomedical applications of such particles require a precise determination of the amount of encapsulated therapeutic agents. Despite many studies describing the development of particle-based delivery systems, a general method for the precise and quick quantification of the encapsulated payload is still lacking. Here, we report a method based on flow cytometry measurements for complexes made from guanosine-based particles and a variety of commercially available fluorescent dyes. This method allows us to determine the apparent affinities of such dyes for two variants of these particles, which in turn provides insightful structure-affinity relationships. In contrast to the current methods, such as those that rely on fluorescence microscopy based on measurements of absorption/fluorescence of dissolved particles or on the supernatant of the solution, the reported method is suitable for high-throughput screening and more reproducible results. The protocol described here should be applicable to a wide variety of colloidal particles being developed around the world. Our group is currently expanding the scope to quantify the encapsulation of other molecules of biomedical interest, such as proteins and nucleic acids.
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Affiliation(s)
- Luis A Prieto-Costas
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
| | - Logan Milton
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
| | - Carla M Quiñones-Jurgensen
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
| | - José M Rivera
- Department of Chemistry and Molecular Sciences Research Center, University of Puerto Rico at Río Piedras, San Juan, Puerto Rico 00926, United States
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Marras AE, Ting JM, Stevens KC, Tirrell MV. Advances in the Structural Design of Polyelectrolyte Complex Micelles. J Phys Chem B 2021; 125:7076-7089. [PMID: 34160221 PMCID: PMC9282648 DOI: 10.1021/acs.jpcb.1c01258] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Polyelectrolyte complex micelles (PCMs) are a unique class of self-assembled nanoparticles that form with a core of associated polycations and polyanions, microphase-separated from neutral, hydrophilic coronas in aqueous solution. The hydrated nature and structural and chemical versatility make PCMs an attractive system for delivery and for fundamental polymer physics research. By leveraging block copolymer design with controlled self-assembly, fundamental structure-property relationships can be established to tune the size, morphology, and stability of PCMs precisely in pursuit of tailored nanocarriers, ultimately offering storage, protection, transport, and delivery of active ingredients. This perspective highlights recent advances in predictive PCM design, focusing on (i) structure-property relationships to target specific nanoscale dimensions and shapes and (ii) characterization of PCM dynamics primarily using time-resolved scattering techniques. We present several vignettes from these two emerging areas of PCM research and discuss key opportunities for PCM design to advance precision medicine.
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Affiliation(s)
- Alexander E Marras
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Jeffrey M Ting
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Kaden C Stevens
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
| | - Matthew V Tirrell
- Pritzker School of Molecular Engineering, The University of Chicago, Chicago, Illinois 60637, United States
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Ting JM, Marras AE, Mitchell JD, Campagna TR, Tirrell MV. Comparing Zwitterionic and PEG Exteriors of Polyelectrolyte Complex Micelles. Molecules 2020; 25:E2553. [PMID: 32486282 PMCID: PMC7321349 DOI: 10.3390/molecules25112553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 12/12/2022] Open
Abstract
A series of model polyelectrolyte complex micelles (PCMs) was prepared to investigate the consequences of neutral and zwitterionic chemistries and distinct charged cores on the size and stability of nanocarriers. Using aqueous reversible addition-fragmentation chain transfer (RAFT) polymerization, we synthesized a well-defined diblock polyelectrolyte system, poly(2-methacryloyloxyethyl phosphorylcholine methacrylate)-block-poly((vinylbenzyl) trimethylammonium) (PMPC-PVBTMA), at various neutral and charged block lengths to compare directly against PCM structure-property relationships centered on poly(ethylene glycol)-block-poly((vinylbenzyl) trimethylammonium) (PEG-PVBTMA) and poly(ethylene glycol)-block-poly(l-lysine) (PEG-PLK). After complexation with a common polyanion, poly(sodium acrylate), the resulting PCMs were characterized by dynamic light scattering (DLS) and small angle X-ray scattering (SAXS). We observed uniform assemblies of spherical micelles with a diameter ~1.5-2× larger when PMPC-PVBTMA was used compared to PEG-PLK and PEG-PVBTMA via SAXS and DLS. In addition, PEG-PLK PCMs proved most resistant to dissolution by both monovalent and divalent salt, followed by PEG-PVBTMA then PMPC-PVBTMA. All micelle systems were serum stable in 100% fetal bovine serum over the course of 8 h by time-resolved DLS, demonstrating minimal interactions with serum proteins and potential as in vivo drug delivery vehicles. This thorough study of the synthesis, assembly, and characterization of zwitterionic polymers in PCMs advances the design space for charge-driven micelle assemblies.
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Affiliation(s)
- Jeffrey M. Ting
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA; (J.M.T.); (A.E.M.); (J.D.M.); (T.R.C.)
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Alexander E. Marras
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA; (J.M.T.); (A.E.M.); (J.D.M.); (T.R.C.)
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
| | - Joseph D. Mitchell
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA; (J.M.T.); (A.E.M.); (J.D.M.); (T.R.C.)
| | - Trinity R. Campagna
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA; (J.M.T.); (A.E.M.); (J.D.M.); (T.R.C.)
| | - Matthew V. Tirrell
- Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA; (J.M.T.); (A.E.M.); (J.D.M.); (T.R.C.)
- Center for Molecular Engineering and Materials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA
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7
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Zhen Z, Potta T, Christensen MD, Narayanan E, Kanagal K, Breneman CM, Rege K. Accelerated Materials Discovery Using Chemical Informatics Investigation of Polymer Physicochemical Properties and Transgene Expression Efficacy. ACS Biomater Sci Eng 2018; 5:654-669. [DOI: 10.1021/acsbiomaterials.8b00963] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhuo Zhen
- Rensselaer Exploratory Center for Cheminformatics Research and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
| | - Thrimoorthy Potta
- Chemical Engineering, Arizona State University, Tempe, Arizona 85287-6106, United States
| | - Matthew D. Christensen
- Chemical Engineering, Arizona State University, Tempe, Arizona 85287-6106, United States
| | - Eshwaran Narayanan
- Chemical Engineering, Arizona State University, Tempe, Arizona 85287-6106, United States
| | - Kapil Kanagal
- Brophy College Preparatory, 4701 N Central Ave, Phoenix, Arizona 85012, United States
| | - Curt M. Breneman
- Rensselaer Exploratory Center for Cheminformatics Research and Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, 110 Eighth Street, Troy, New York 12180, United States
| | - Kaushal Rege
- Chemical Engineering, Arizona State University, Tempe, Arizona 85287-6106, United States
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8
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Redox-responsive micelles self-assembled from multi-block copolymer for co-delivery of siRNA and hydrophobic anticancer drug. Polym Bull (Berl) 2018. [DOI: 10.1007/s00289-018-2600-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Ju P, Hu J, Li F, Cao Y, Li L, Shi D, Hao Y, Zhang M, He J, Ni P. A biodegradable polyphosphoester-functionalized poly(disulfide) nanocarrier for reduction-triggered intracellular drug delivery. J Mater Chem B 2018; 6:7263-7273. [PMID: 32254638 DOI: 10.1039/c8tb01566j] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Stimuli-responsive and biodegradable polymeric carriers are of great importance for safe delivery and efficient release of chemotherapeutic agents. In this work, given the unique advantages of poly(disulfide)s and biodegradable polyphosphoesters, we designed and constructed a reduction-sensitive amphiphilic triblock copolymer poly(ethyl ethylene phosphate)-b-poly(disulfide)-b-poly(ethyl ethylene phosphate) (PEEP-PDS-PEEP) by combining thiol-disulfide polycondensation and ring-opening polymerization (ROP). The thiol-disulfide polycondensation between 1,6-hexanedithiol and 2,2'-dithiodipyridine yielded the linear telechelic pyridyl disulfide-terminated poly(disulfide)s, followed by the treatment with 2-mercaptoethanol to quantitatively produce dihydroxyl-terminated poly(disulfide)s, which was used to initiate the ROP reaction of 2-ethoxy-2-oxo-1,3,2-dioxaphospholane, generating ABA-type amphiphilic triblock copolymers. The chemical structures of various polymers were thoroughly characterized and verified using nuclear magnetic resonance (NMR) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, gel permeation chromatography (GPC) and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectroscopy. The resultant amphiphilic PEEP-PDS-PEEP could self-assemble into spherical nanoparticles in aqueous solution as evidenced from dynamic light scattering (DLS) and transmission electron microscopy (TEM) analyses. Hydrophobic anti-tumor drug doxorubicin (DOX) was used to study the encapsulation capacity of nanoparticles, the drug loading content (DLC) and drug loading efficiency (DLE) values were determined to be 11.2% and 31.5%, respectively. In vitro release studies indicated that DOX was released much faster under reductive conditions compared to physiological conditions, confirming their reduction-responsive release behavior owing to the scission of the poly(disulfide) segment and subsequent disintegration of nanoparticles. The cellular uptake study using a live cell imaging system demonstrated that this DOX-loaded nanoparticle can be internalized into HeLa cells and release DOX over time. Methyl thiazolyl tetrazolium (MTT) assay revealed the favorable cytocompatibility of a bare triblock copolymer toward both L929 and HeLa cells, whereas the DOX-loaded copolymer nanoparticles exhibited the lower inhibitory ability against HeLa and HepG2 cell proliferation than free DOX. This finding presents a strategy for the construction of biocompatible and reduction-responsive polymeric drug carriers.
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Affiliation(s)
- Pengfei Ju
- College of Chemistry, Chemical Engineering and Materials Science, State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials, Jiangsu Key Laboratory of Advanced Functional Polymer Design and Application, Suzhou Key Laboratory of Macromolecular Design and Precision Synthesis, Soochow University, Suzhou 215123, P. R. China.
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10
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Zha Z, Hu Y, Mukerabigwi JF, Chen W, Wang Y, He C, Ge Z. Thiolactone Chemistry-Based Combinatorial Methodology to Construct Multifunctional Polymers for Efficacious Gene Delivery. Bioconjug Chem 2017; 29:23-28. [DOI: 10.1021/acs.bioconjchem.7b00672] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zengshi Zha
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Yongyi Hu
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Jean Felix Mukerabigwi
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Weijian Chen
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Yuheng Wang
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Chuanxin He
- College
of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen 518060, Guangdong China
| | - Zhishen Ge
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
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Jiménez Blanco JL, Benito JM, Ortiz Mellet C, García Fernández JM. Molecular nanoparticle-based gene delivery systems. J Drug Deliv Sci Technol 2017. [DOI: 10.1016/j.jddst.2017.03.012] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Greco CT, Epps TH, Sullivan MO. Predicting Gene Silencing Through the Spatiotemporal Control of siRNA Release from Photo-responsive Polymeric Nanocarriers. J Vis Exp 2017:55803. [PMID: 28784979 PMCID: PMC5612584 DOI: 10.3791/55803] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
New materials and methods are needed to better control the binding vs. release of nucleic acids for a wide range of applications that require the precise regulation of gene activity. In particular, novel stimuli-responsive materials with improved spatiotemporal control over gene expression would unlock translatable platforms in drug discovery and regenerative medicine technologies. Furthermore, an enhanced ability to control nucleic acid release from materials would enable the development of streamlined methods to predict nanocarrier efficacy a priori, leading to expedited screening of delivery vehicles. Herein, we present a protocol for predicting gene silencing efficiencies and achieving spatiotemporal control over gene expression through a modular photo-responsive nanocarrier system. Small interfering RNA (siRNA) is complexed with mPEG-b-poly(5-(3-(amino)propoxy)-2-nitrobenzyl methacrylate) (mPEG-b-P(APNBMA)) polymers to form stable nanocarriers that can be controlled with light to facilitate tunable, on/off siRNA release. We outline two complementary assays employing fluorescence correlation spectroscopy and gel electrophoresis for the accurate quantification of siRNA release from solutions mimicking intracellular environments. Information gained from these assays was incorporated into a simple RNA interference (RNAi) kinetic model to predict the dynamic silencing responses to various photo-stimulus conditions. In turn, these optimized irradiation conditions allowed refinement of a new protocol for spatiotemporally controlling gene silencing. This method can generate cellular patterns in gene expression with cell-to-cell resolution and no detectable off-target effects. Taken together, our approach offers an easy-to-use method for predicting dynamic changes in gene expression and precisely controlling siRNA activity in space and time. This set of assays can be readily adapted to test a wide variety of other stimuli-responsive systems in order to address key challenges pertinent to a multitude of applications in biomedical research and medicine.
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Affiliation(s)
- Chad T Greco
- Department of Chemical and Biomolecular Engineering, University of Delaware
| | - Thomas H Epps
- Department of Chemical and Biomolecular Engineering, University of Delaware; Department of Materials Science and Engineering, University of Delaware;
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Zhao L, Wu X, Wang X, Duan C, Wang H, Punjabi A, Zhao Y, Zhang Y, Xu Z, Gao H, Han G. Development of Excipient-Free Freeze-Dryable Unimolecular Hyperstar Polymers for Efficient siRNA Silencing. ACS Macro Lett 2017; 6:700-704. [PMID: 35650873 DOI: 10.1021/acsmacrolett.7b00242] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We designed a unimolecular hyperstar polymer for efficient small interfering RNA (siRNA) delivery that can be processed under repeated lyophilization and reconstitution without the need of any excipient. The hyperstar polymer contains a biodegradable hyperbranched core and is bound to siRNA through its thousands of cationic arms that radiate from its core. The siRNA/hyperstar complexes showed siRNA transfection efficiency that was superior to that of Lipofectamine2000 in regard to the gene for human Cu, Zn superoxide dismutase 1 (SOD1), whose mutation causes familial amyotrophic lateral sclerosis. More importantly, hyperstar polymers as unimolecular containers minimized the multipolymer cross-interaction during lyophilization, and this maintained the uniquely high transfection efficiency of the siRNA/hyperstar complexes after repeated freeze-drying and reconstitution without the conventional need for excipient.
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Affiliation(s)
- Liang Zhao
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116012, People's Republic of China
| | - Xiang Wu
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
| | - Xiaofeng Wang
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116012, People's Republic of China
| | - Hongyan Wang
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
| | - Amol Punjabi
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
| | - Yang Zhao
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
| | - Yuanwei Zhang
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
| | - Zuoshang Xu
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
| | - Haifeng Gao
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Gang Han
- Department of Biochemistry and Molecular Pharmacology, University of Massachusetts Medical School, Worcester, Massachusetts 01605, United States
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14
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Jiang Y, Sprouse D, Laaser JE, Dhande Y, Reineke TM, Lodge TP. Complexation of Linear DNA and Poly(styrenesulfonate) with Cationic Copolymer Micelles: Effect of Polyanion Flexibility. J Phys Chem B 2017; 121:6708-6720. [DOI: 10.1021/acs.jpcb.7b03732] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Yaming Jiang
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Dustin Sprouse
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Jennifer E. Laaser
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Yogesh Dhande
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Theresa M. Reineke
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Timothy P. Lodge
- Department of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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15
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Greco CT, Andrechak JC, Epps TH, Sullivan MO. Anionic Polymer and Quantum Dot Excipients to Facilitate siRNA Release and Self-Reporting of Disassembly in Stimuli-Responsive Nanocarrier Formulations. Biomacromolecules 2017; 18:1814-1824. [PMID: 28441861 PMCID: PMC5672795 DOI: 10.1021/acs.biomac.7b00265] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The incorporation of anionic excipients into polyplexes is a promising strategy for modulating siRNA binding versus release and integrating diagnostic capabilities; however, specific design criteria and structure-function relationships are needed to facilitate the development of nanocarrier-based theranostics. Herein, we incorporated poly(acrylic acid) (PAA) and quantum dot (QD) excipients into photolabile siRNA polyplexes to increase gene silencing efficiencies by up to 100% and enable self-reporting of nanocarrier disassembly. Our systematic approach identified the functional relationships between gene silencing and key parameters such as excipient loading fractions and molecular weights that facilitated the establishment of design rules for optimization of nanocarrier efficacy. For example, we found that PAA molecular weights ∼10-20× greater than that of the coencapsulated siRNA exhibited the most efficient release and silencing. Furthermore, siRNA release assays and RNAi modeling allowed us to generate a PAA "heat map" that predicted gene silencing a priori as a function of PAA molecular weight and loading fraction. QDs further promoted selective siRNA release and provided visual as well as Förster resonance energy transfer (FRET)-based monitoring of the dynamic changes in nanostructure in situ. Moreover, even with the addition of anionic components, our formulations exhibited substantially improved stability and shelf life relative to typical formulations, with complete stability after a week of storage and full activity in the presence of serum. Taken together, this study enabled synergistic improvements in siRNA release and diagnostic capabilities, along with the development of mechanistic insights that are critical for advancing the translation of nucleic acid theranostics into the clinic.
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Affiliation(s)
- Chad T Greco
- Department of Chemical and Biomolecular Engineering and §Department of Materials Science and Engineering, University of Delaware , Newark, Delaware 19716, United States
| | - Jason C Andrechak
- Department of Chemical and Biomolecular Engineering and §Department of Materials Science and Engineering, University of Delaware , Newark, Delaware 19716, United States
| | - Thomas H Epps
- Department of Chemical and Biomolecular Engineering and §Department of Materials Science and Engineering, University of Delaware , Newark, Delaware 19716, United States
| | - Millicent O Sullivan
- Department of Chemical and Biomolecular Engineering and §Department of Materials Science and Engineering, University of Delaware , Newark, Delaware 19716, United States
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16
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Chen J, Jiang W, Han H, Yang J, Chen W, Wang Y, Tang J, Li Q. Chemoenzymatic Synthesis of Cholesterol- g-Poly(amine- co-ester) Amphiphilic Copolymer as a Carrier for miR-23b Delivery. ACS Macro Lett 2017; 6:523-528. [PMID: 35610880 DOI: 10.1021/acsmacrolett.7b00211] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The lipase-catalyzed polymerization of N-methyldiethanolamine, diethyl sebacate and ω-pentadecanolide was performed to construct a cationic poly(amine-co-ester), and a hydrophobic N-(2-bromoethyl)carbamoyl cholesterol was then grafted onto its main chain through a quaternization reaction to prepare the amphiphilic copolymer Chol-g-PMSC-PPDL. The copolymer efficiently bound and condensed miR-23b to form stable nanocomplexes, which showed favorable cellular uptake and miR-23b transfection efficacy due to the introduction of the hydrophobic segment. After miR-23b delivery, an obvious inhibition of cell proliferation could be induced, which was attributed to the induction of cell apoptosis and cell cycle arrest. Moreover, the carrier-mediated miR-23b delivery could inhibit the migration and invasion of tumor cells. Overall, the work provides a novel chemoenzymatic strategy for constructing biodegradable and biocompatible poly(amine-co-ester) derivatives, which are promising carriers for oligonucleotide delivery to achieve tumor gene therapy.
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Affiliation(s)
- Jiawen Chen
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Wei Jiang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Haobo Han
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Jiebing Yang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Wenqi Chen
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Yudi Wang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Jun Tang
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
| | - Quanshun Li
- Key Laboratory for Molecular Enzymology and Engineering of Ministry
of Education, School of Life Sciences, and ‡Department of Polymer Science, College
of Chemistry, Jilin University, Changchun 130012, China
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17
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Greco CT, Muir VG, Epps TH, Sullivan MO. Efficient tuning of siRNA dose response by combining mixed polymer nanocarriers with simple kinetic modeling. Acta Biomater 2017; 50:407-416. [PMID: 28063990 PMCID: PMC5317101 DOI: 10.1016/j.actbio.2017.01.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/01/2016] [Accepted: 01/03/2017] [Indexed: 12/12/2022]
Abstract
Two of the most prominent challenges that limit the clinical success of siRNA therapies are a lack of control over cargo release from the delivery vehicle and an incomplete understanding of the link between gene silencing dynamics and siRNA dosing. Herein, we address these challenges through the formulation of siRNA polyplexes containing light-responsive polymer mixtures, whose varied compositions and triggered release behavior provide enhanced gene silencing and controlled dose responses that can be predicted by simple kinetic models. Through the straightforward mixing of two block copolymers, the level of gene knockdown was easily optimized to achieve the maximum level of GAPDH protein silencing in NIH/3T3 cells (~70%) using a single siRNA dose. The kinetic model was used to describe the dynamic changes in mRNA and protein concentrations in response to siRNA treatment. These predictions enabled the application of a second dose of siRNA to maximally suppress gene expression over multiple days, leading to a further 50% reduction in protein levels relative to those measured following a single dose. Furthermore, polyplexes remained dormant in cells until exposed to the photo-stimulus, demonstrating the complete control over siRNA activity as well as the stability of the nanocarriers. Thus, this work demonstrates that pairing advances in biomaterials design with simple kinetic modeling provides new insight into gene silencing dynamics and presents a powerful strategy to control gene expression through siRNA delivery. STATEMENT OF SIGNIFICANCE Our manuscript describes two noteworthy impacts: (1) we designed mixed polymer formulations to enhance gene silencing, and (2) we simultaneously developed a simple kinetic model for determining optimal siRNA dose responses to maintain silencing over several days. These advances address critical challenges in siRNA delivery and provide new opportunities in therapeutics development. The structure-function relationships prevalent in these formulations were established to enable tuning and forecasting of nanocarrier efficiency a priori, leading to siRNA dosing regimens able to maximally suppress gene expression. Our advances are significant because the mixed polymer formulations provide a straightforward and scalable approach to tailor siRNA delivery regimens. Moreover, the implementation of accurate dosing frameworks addresses a major knowledge gap that has hindered clinical implementation of siRNA.
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Affiliation(s)
- Chad T Greco
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - Victoria G Muir
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA
| | - Thomas H Epps
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA; Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, USA.
| | - Millicent O Sullivan
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA.
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18
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Dréan M, Debuigne A, Goncalves C, Jérôme C, Midoux P, Rieger J, Guégan P. Use of Primary and Secondary Polyvinylamines for Efficient Gene Transfection. Biomacromolecules 2017; 18:440-451. [DOI: 10.1021/acs.biomac.6b01526] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mathilde Dréan
- Sorbonne Universités,
UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire,
Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
- Center
for Education and Research on Macromolecules (CERM), Department of
Chemistry, University of Liege (ULg), Sart-Tilman, Allée de la
Chimie 3, Bat. B6a, B-4000 Liège, Belgium
| | - Antoine Debuigne
- Center
for Education and Research on Macromolecules (CERM), Department of
Chemistry, University of Liege (ULg), Sart-Tilman, Allée de la
Chimie 3, Bat. B6a, B-4000 Liège, Belgium
| | - Cristine Goncalves
- Centre de Biophysique
Moléculaire, UPR4301 CNRS, Rue
Charles Sadron, 45071 Orléans Cedex 2, France
| | - Christine Jérôme
- Center
for Education and Research on Macromolecules (CERM), Department of
Chemistry, University of Liege (ULg), Sart-Tilman, Allée de la
Chimie 3, Bat. B6a, B-4000 Liège, Belgium
| | - Patrick Midoux
- Centre de Biophysique
Moléculaire, UPR4301 CNRS, Rue
Charles Sadron, 45071 Orléans Cedex 2, France
| | - Jutta Rieger
- Sorbonne Universités,
UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire,
Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
| | - Philippe Guégan
- Sorbonne Universités,
UPMC Univ Paris 06, CNRS, Institut Parisien de Chimie Moléculaire,
Equipe Chimie des Polymères, 4 Place Jussieu, F-75005 Paris, France
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19
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Munsell EV, Ross NL, Sullivan MO. Journey to the Center of the Cell: Current Nanocarrier Design Strategies Targeting Biopharmaceuticals to the Cytoplasm and Nucleus. Curr Pharm Des 2016; 22:1227-44. [PMID: 26675220 DOI: 10.2174/1381612822666151216151420] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 12/15/2015] [Indexed: 01/06/2023]
Abstract
New biopharmaceutical molecules, potentially able to provide more personalized and effective treatments, are being identified through the advent of advanced synthetic biology strategies, sophisticated chemical synthesis approaches, and new analytical methods to assess biological potency. However, translation of many of these structures has been significantly limited due to the need for more efficient strategies to deliver macromolecular therapeutics to desirable intracellular sites of action. Engineered nanocarriers that encapsulate peptides, proteins, or nucleic acids are generally internalized into target cells via one of several endocytic pathways. These nanostructures, entrapped within endosomes, must navigate the intracellular milieu to orchestrate delivery to the intended destination, typically the cytoplasm or nucleus. For therapeutics active in the cytoplasm, endosomal escape continues to represent a limiting step to effective treatment, since a majority of nanocarriers trapped within endosomes are ultimately marked for enzymatic degradation in lysosomes. Therapeutics active in the nucleus have the added challenges of reaching and penetrating the nuclear envelope, and nuclear delivery remains a preeminent challenge preventing clinical translation of gene therapy applications. Herein, we review cutting-edge peptide- and polymer-based design strategies with the potential to enable significant improvements in biopharmaceutical efficacy through improved intracellular targeting. These strategies often mimic the activities of pathogens, which have developed innate and highly effective mechanisms to penetrate plasma membranes and enter the nucleus of host cells. Understanding these mechanisms has enabled advances in synthetic peptide and polymer design that may ultimately improve intracellular trafficking and bioavailability, leading to increased access to new classes of biotherapeutics.
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Affiliation(s)
| | | | - Millicent O Sullivan
- Department of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, DE 19716, Delaware.
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20
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Tan JKY, Sellers DL, Pham B, Pun SH, Horner PJ. Non-Viral Nucleic Acid Delivery Strategies to the Central Nervous System. Front Mol Neurosci 2016; 9:108. [PMID: 27847462 PMCID: PMC5088201 DOI: 10.3389/fnmol.2016.00108] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 10/11/2016] [Indexed: 12/11/2022] Open
Abstract
With an increased prevalence and understanding of central nervous system (CNS) injuries and neurological disorders, nucleic acid therapies are gaining promise as a way to regenerate lost neurons or halt disease progression. While more viral vectors have been used clinically as tools for gene delivery, non-viral vectors are gaining interest due to lower safety concerns and the ability to deliver all types of nucleic acids. Nevertheless, there are still a number of barriers to nucleic acid delivery. In this focused review, we explore the in vivo challenges hindering non-viral nucleic acid delivery to the CNS and the strategies and vehicles used to overcome them. Advantages and disadvantages of different routes of administration including: systemic injection, cerebrospinal fluid injection, intraparenchymal injection and peripheral administration are discussed. Non-viral vehicles and treatment strategies that have overcome delivery barriers and demonstrated in vivo gene transfer to the CNS are presented. These approaches can be used as guidelines in developing synthetic gene delivery vectors for CNS applications and will ultimately bring non-viral vectors closer to clinical application.
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Affiliation(s)
- James-Kevin Y Tan
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Drew L Sellers
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Binhan Pham
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Suzie H Pun
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Philip J Horner
- Center for Neuroregenerative Medicine, Houston Methodist Research Institute Houston, TX, USA
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21
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Greco CT, Epps TH, Sullivan MO. Mechanistic Design of Polymer Nanocarriers to Spatiotemporally Control Gene Silencing. ACS Biomater Sci Eng 2016; 2:1582-1594. [DOI: 10.1021/acsbiomaterials.6b00336] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chad T. Greco
- Department of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Thomas H. Epps
- Department of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Delaware, Newark, Delaware 19716, United States
| | - Millicent O. Sullivan
- Department of Chemical and Biomolecular Engineering and ‡Department of Materials Science
and Engineering, University of Delaware, Newark, Delaware 19716, United States
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22
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Vaidyanathan S, Chen J, Orr BG, Banaszak Holl MM. Cationic Polymer Intercalation into the Lipid Membrane Enables Intact Polyplex DNA Escape from Endosomes for Gene Delivery. Mol Pharm 2016; 13:1967-78. [PMID: 27111496 DOI: 10.1021/acs.molpharmaceut.6b00139] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Developing improved cationic polymer-DNA polyplexes for gene delivery requires improved understanding of DNA transport from endosomes into the nucleus. Using a FRET-capable oligonucleotide molecular beacon (OMB), we monitored the transport of intact DNA to cell organelles. We observed that for effective (jetPEI) and ineffective (G5 PAMAM) vectors, the fraction of cells displaying intact OMB in the cytosol (jetPEI ≫ G5 PAMAM) quantitatively predicted the fraction expressing transgene (jetPEI ≫ G5 PAMAM). Intact OMB delivered with PAMAM and confined to endosomes could be released to the cytosol by the subsequent addition of L-PEI, with a corresponding 10-fold increase in transgene expression. These results suggest that future vector development should optimize vectors for intercalation into, and destabilization of, the endosomal membrane. Finally, the study highlights a two-step strategy in which the pDNA is loaded in cells using one vector and endosomal release is mediated by a second agent.
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Affiliation(s)
- Sriram Vaidyanathan
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Junjie Chen
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Bradford G Orr
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Mark M Banaszak Holl
- Departments of †Biomedical Engineering and ‡Chemistry and Programs in §Applied Physics and ⊥Macromolecular Science and Engineering, University of Michigan , Ann Arbor, Michigan 48109, United States
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23
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A novel tyrosine-modified low molecular weight polyethylenimine (P10Y) for efficient siRNA delivery in vitro and in vivo. J Control Release 2016; 230:13-25. [DOI: 10.1016/j.jconrel.2016.03.034] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2015] [Revised: 03/23/2016] [Accepted: 03/25/2016] [Indexed: 11/17/2022]
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24
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Ghobadi AF, Letteri R, Parelkar SS, Zhao Y, Chan-Seng D, Emrick T, Jayaraman A. Dispersing Zwitterions into Comb Polymers for Nonviral Transfection: Experiments and Molecular Simulation. Biomacromolecules 2016; 17:546-57. [DOI: 10.1021/acs.biomac.5b01462] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ahmadreza F. Ghobadi
- Department
of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716 United States
| | - Rachel Letteri
- Department
of Polymer Science and Engineering, University of Massachusetts, 120
Governors Drive, Amherst, Massachusetts 01003, United States
| | - Sangram S. Parelkar
- Department
of Polymer Science and Engineering, University of Massachusetts, 120
Governors Drive, Amherst, Massachusetts 01003, United States
| | - Yue Zhao
- Quantum
Beam Science Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - Delphine Chan-Seng
- Institut Charles
Sadron UPR22-CNRS, 23 rue du Loess, 67034 Strasbourg, France
| | - Todd Emrick
- Department
of Polymer Science and Engineering, University of Massachusetts, 120
Governors Drive, Amherst, Massachusetts 01003, United States
| | - Arthi Jayaraman
- Department
of Chemical and Biomolecular Engineering, University of Delaware, 150 Academy Street, Newark, Delaware 19716 United States
- Department
of Materials Science and Engineering, University of Delaware, 201 DuPont
Hall, Newark, Delaware 19716 United States
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25
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Zha Z, Li J, Ge Z. Endosomal-Escape Polymers Based on Multicomponent Reaction-Synthesized Monomers Integrating Alkyl and Imidazolyl Moieties for Efficient Gene Delivery. ACS Macro Lett 2015; 4:1123-1127. [PMID: 35614816 DOI: 10.1021/acsmacrolett.5b00615] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
As one of the toughest tasks in the course of intracellular therapeutics delivery, endosomal escape must be effectively achieved, particularly for intracellular gene transport. In this report, novel endosomal-escape polymers were designed and synthesized from monomers by integrating alkyl and imidazolyl via Passerini reaction and reversible addition-fragmentation chain transfer polymerization (RAFT). After introducing the endosomal-escape polymers with proper degrees of polymerization (DPs) into poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) as the gene delivery vectors, the block copolymers exhibited significantly enhanced hemolytic activity at endosomal pH, and the plasmid DNA (pDNA)-loaded polyplexes showed efficient endosomal escape compared with PDMAEMA, ultimately achieving dramatically increased gene transfection efficacy. These results suggest that the polymers that integrate alkyl and imidazolyl moieties for efficient endosomal escape have wide potential applications for intracellular gene delivery.
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Affiliation(s)
- Zengshi Zha
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Junjie Li
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
| | - Zhishen Ge
- CAS Key Laboratory of Soft
Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui China
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26
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Twin disulfides as opportunity for improving stability and transfection efficiency of oligoaminoethane polyplexes. J Control Release 2015; 205:109-19. [DOI: 10.1016/j.jconrel.2014.12.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 12/16/2014] [Accepted: 12/24/2014] [Indexed: 12/29/2022]
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27
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Preparation of pH-sensitive nanoparticles of poly (methacrylic acid) (PMAA)/poly (vinyl pyrrolidone) (PVP) by ATRP-template miniemulsion polymerization in the aqueous solution. Colloid Polym Sci 2015. [DOI: 10.1007/s00396-015-3554-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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Lächelt U, Wagner E. Nucleic Acid Therapeutics Using Polyplexes: A Journey of 50 Years (and Beyond). Chem Rev 2015; 115:11043-78. [DOI: 10.1021/cr5006793] [Citation(s) in RCA: 418] [Impact Index Per Article: 46.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Ulrich Lächelt
- Pharmaceutical
Biotechnology, Department of Pharmacy, Ludwig Maximilians Universität, 81377 Munich, Germany
- Nanosystems
Initiative
Munich (NIM), 80799 Munich, Germany
| | - Ernst Wagner
- Pharmaceutical
Biotechnology, Department of Pharmacy, Ludwig Maximilians Universität, 81377 Munich, Germany
- Nanosystems
Initiative
Munich (NIM), 80799 Munich, Germany
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29
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Lote AR, Kolhatkar VR, Insley T, Král P, Kolhatkar R. Oligospermines and Nucleic Acid Interaction: A Structure Property Relationship Study. ACS Macro Lett 2014; 3:829-833. [PMID: 35590709 DOI: 10.1021/mz500358w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A variety of delivery vehicles use spermine as a polycationic component to form complexes with nucleic acids. Thus, we investigated the influence of molecular architecture, amine density, and molecular weight of oligospermines on its binding to nucleic acids. We report the synthesis of mono, bis, and tetraspermines with linear, cyclic, dendritic, and quatrefoil architecture. The effect of molecular weight was more pronounced in linear oligospermines than their cyclic counterparts. Oligospermines with similar amine density but different molecular architectures exhibited different binding profiles. Among all oligospermines evaluated, dendritic tetraspermine exhibited the highest binding affinity. Atomistic molecular dynamics simulations also indicated higher affinity for dendritic tetraspermine to siRNA than its linear counterpart suggesting the importance of spermine geometry in binding to nucleic acids. Importantly, dendritic tetraspermine was less toxic than linear tetraspermine, suggesting its potential in nucleic acid delivery.
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Affiliation(s)
- Asawari R Lote
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Rockford, Illinois 61111, United States
| | - Vidula R Kolhatkar
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Rockford, Illinois 61111, United States
| | | | | | - Rohit Kolhatkar
- Department of Biopharmaceutical Sciences, College of Pharmacy, University of Illinois, Rockford, Illinois 61111, United States
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30
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Li Y, Li J, Chen B, Chen Q, Zhang G, Liu S, Ge Z. Polyplex Micelles with Thermoresponsive Heterogeneous Coronas for Prolonged Blood Retention and Promoted Gene Transfection. Biomacromolecules 2014; 15:2914-23. [DOI: 10.1021/bm500532x] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Yang Li
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Junjie Li
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Biao Chen
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qixian Chen
- Department
of Materials Engineering, Graduate School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | - Guoying Zhang
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shiyong Liu
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Zhishen Ge
- CAS
Key Laboratory of Soft Matter Chemistry, Department of Polymer Science
and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
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Green MD, Foster AA, Greco CT, Roy R, Lehr RM, Epps TH, Sullivan MO. Catch and Release: Photocleavable Cationic Diblock Copolymers as a Potential Platform for Nucleic Acid Delivery. Polym Chem 2014; 5:10.1039/C4PY00638K. [PMID: 25090637 PMCID: PMC4115287 DOI: 10.1039/c4py00638k] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Binding interactions between DNA and cationic carriers must be sufficiently strong to prevent nuclease-mediated degradation, yet weak enough to permit transcription. We demonstrate cationic diblock copolymers containing PEG and o-nitrobenzyl moieties that facilitated tailorable DNA complexation and light-activated release. This design unlocks a new approach to advance non-viral gene packaging.
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Affiliation(s)
- Matthew D. Green
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
| | - Abbygail A. Foster
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
| | - Chad T. Greco
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
| | - Raghunath Roy
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
| | - Rachel M. Lehr
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
| | - Thomas H. Epps
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
| | - Millicent O. Sullivan
- Department of Chemical and Biomolecular Engineering, University of Delaware, Newark, DE 19716, USA. Fax: +1 302 831 1048; Tel: +1 302 831 8072
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