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Gao S, Sun Y, Lu Z, Jiang N, Yao H. Synergistic antibacterial and biofilm eradication activity of quaternary-ammonium compound with copper ion. J Inorg Biochem 2023; 243:112190. [PMID: 36965431 DOI: 10.1016/j.jinorgbio.2023.112190] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 03/09/2023] [Accepted: 03/10/2023] [Indexed: 03/15/2023]
Abstract
Antibiotics overuse and misuse increase the emergence of multidrug-resistant bacterial strains, which often leads to the failure of conventional antibiotic therapies. Even worse, the tendency of bacteria to form biofilms further increases the therapeutic difficulty, because the extracellular matrix prevents the penetration of antibiotics and triggers bacterial tolerance. Therefore, developing novel antibacterial agents or therapeutic strategies with diverse antibacterial mechanisms and destruction of bacteria biofilm is a promising way to combat bacterial infections. In the present study, the combination of quaternary ammonium compound poly(diallyl dimethyl ammonium chloride) (PDDA) with Cu2+ was screened out to fight common pathogenic Staphylococcus aureus (S. aureus) through multi-mechanisms. This combination appeared strong synergistic antibacterial activity, and the fractional inhibitory concentration index was as low as 0.032. The synergistic antibacterial mechanism involved the destruction of the membrane function, generation of intracellular reactive oxygen, and promotion more Cu2+ into the cytoplasm. Further, the combination of PDDA and Cu2+ reduced the extracellular polysaccharide matrix, meanwhile killing the bacteria embedded in the biofilm. The biocompatibility study in vitro revealed this combination exhibited low cytotoxicity and hemolysis ratio even at 8 times of minimum bactericidal concentration. This work provides a novel antibacterial agents combination with higher efficiency to fight planktonic and biofilm conditions of S. aureus.
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Affiliation(s)
- Songtai Gao
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yujun Sun
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhong Lu
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China.
| | - Nan Jiang
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China
| | - Huaiying Yao
- Research Center for Environmental Ecology and Engineering, School of Environmental Ecology and Biological Engineering, Key Laboratory of Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan 430205, China; Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China; Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control, CAS Haixi Industrial Technology Innovation Center in Beilun, Ningbo 315830, China.
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2
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Wang Z, Lv J, Huang H, Xu H, Zhang J, Xue C, Zhang S, Wu ZS. Structure-switchable aptamer-arranged reconfigurable DNA nanonetworks for targeted cancer therapy. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2022; 43:102553. [PMID: 35337985 DOI: 10.1016/j.nano.2022.102553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 03/01/2022] [Accepted: 03/08/2022] [Indexed: 06/14/2023]
Abstract
The structural DNA nanotechnology holds great potential application in bioimaging, drug delivery and cancer therapy. Herein, an intelligent aptamer-incorporated DNA nanonetwork (Apt-Nnes) is demonstrated for cancer cell imaging and targeted drug delivery, which essentially is a micron-scale pattern with the thickness of double-stranded monolayer. Cancer cell-surface receptors can make it perform magical transformation into small size of nanosheet intermediates and specifically enter target cells. The binding affinity of Apt-Nnes is increased by 3-fold due to multivalent binding effect of aptamers and it can maintain the structural integrity in fetal bovine serum (FBS) for 8 h. More interestingly, target cancer cells can cause the structural disassembly, and each resulting unit transports 4963 doxorubicin (Dox) into target cells, causing the specific cellular cytotoxicity. The cell surface receptor-mediated disassembly of large size of DNA nanostructures into small size of fractions provides a valuable insight into developing intelligent DNA nanostructure suitable for biomedical applications.
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Affiliation(s)
- Zhenmeng Wang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jinrui Lv
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Hong Huang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Huo Xu
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jingjing Zhang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Chang Xue
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
| | - Songbai Zhang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China; College of Chemistry and Materials Engineering, Hunan University of Arts and Science, Changde, China.
| | - Zai-Sheng Wu
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, State Key Laboratory of Photocatalysis on Energy and Environment, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, College of Chemistry, Fuzhou University, Fuzhou 350108, China.
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Wang M, Wu B, Tucker JD, Shah SN, Lu P, Lu Q. Triazine-cored polymeric vectors for antisense oligonucleotide delivery in vitro and in vivo. J Nanobiotechnology 2020; 18:34. [PMID: 32070342 PMCID: PMC7029474 DOI: 10.1186/s12951-020-0586-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2019] [Accepted: 01/29/2020] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND The polymer-based drug/gene delivery is promising for the treatment of inherent or acquire disease, because of the polymer's structural flexibility, larger capacity for therapeutic agent, low host immunogenicity and less cost. Antisense therapy is an approach to fighting genetic disorders or infections using antisense oligonucleotides (AOs). Unfortunately, the naked AOs showed low therapeutic efficacy in vivo and in clinical trial due to their poor cellular uptake and fast clearance in bloodstream. In this study, a series of triazine-cored amphiphilic polymers (TAPs) were investigated for their potential to enhance delivery of AOs, 2'-O-methyl phosphorothioate RNA (2'-OMePS) and phosphorodiamidate morpholino oligomer (PMO) both in vitro and in vivo. RESULTS TAPs significantly enhanced AO-induced exon-skipping in a GFP reporter-based myoblast and myotube culture system, and observed cytotoxicity of the TAPs were lower than Endoporter, Lipofectamine-2000 or PEI 25K. Application of optimized formulations of TAPs with AO targeted to dystrophin exon 23 demonstrated a significant increase in exon-skipping efficiency in dystrophic mdx mice. The best ones for PMO and 2'-OMePS delivery have reached to 11-, 15-fold compared with the AO only in mdx mice, respectively. CONCLUSION The study of triazine-cored amphiphilic polymers for AO delivery in vitro and in mdx mice indicated that the carrier's performances are related to the molecular size, compositions and hydrophilic-lipophilic balance (HLB) of the polymers, as well as the AO's structure. Improved exon-skipping efficiency of AOs observed in vitro and in mdx mice accompanied with low cytotoxicity demonstrated TAP polymers are potentials as safe and effective delivery carrier for gene/drug delivery.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA.
| | - Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Jason D Tucker
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Sapana N Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Peijuan Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
| | - Qilong Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC, 28231, USA
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Parelius Jonášová E, Stokke BT. Morpholino Target Molecular Properties Affect the Swelling Process of Oligomorpholino-Functionalized Responsive Hydrogels. Polymers (Basel) 2020; 12:E268. [PMID: 31991917 PMCID: PMC7077381 DOI: 10.3390/polym12020268] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 01/13/2020] [Accepted: 01/18/2020] [Indexed: 01/06/2023] Open
Abstract
Responsive hydrogels featuring DNA as a functional unit are attracting increasing interest due to combination of versatility and numerous applications. The possibility to use nucleic acid analogues opens for further customization of the hydrogels. In the present work, the commonly employed DNA oligonucleotides in DNA-co-acrylamide responsive hydrogels are replaced by Morpholino oligonucleotides. The uncharged backbone of this nucleic acid analogue makes it less susceptible to possible enzymatic degradation. In this work we address fundamental issues related to key processes in the hydrogel response; such as partitioning of the free oligonucleotides and the strand displacement process. The hydrogels were prepared at the end of optical fibers for interferometric size monitoring and imaged using confocal laser scanning microscopy of the fluorescently labeled free oligonucleotides to observe their apparent diffusion and accumulation within the hydrogels. Morpholino-based hydrogels' response to Morpholino targets was compared to DNA hydrogels' response to DNA targets of the same base-pair sequence. Non-binding targets were observed to be less depleted in Morpholino hydrogels than in DNA hydrogels, due to their electroneutrality, resulting in faster kinetics for Morpholinos. The electroneutrality, however, also led to the total swelling response of the Morpholino hydrogels being smaller than that of DNA, since their lack of charges eliminates swelling resulting from the influx of counter-ions upon oligonucleotide binding. We have shown that employing nucleic acid analogues instead of DNA in hydrogels has a profound effect on the hydrogel response.
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Affiliation(s)
| | - Bjørn Torger Stokke
- Biophysics and Medical Technology, Department of Physics, NTNU—Norwegian University of Science and Technology, NO-7491 Trondheim, Norway;
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5
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Ouyang C, Zhang S, Xue C, Yu X, Xu H, Wang Z, Lu Y, Wu ZS. Precision-Guided Missile-Like DNA Nanostructure Containing Warhead and Guidance Control for Aptamer-Based Targeted Drug Delivery into Cancer Cells in Vitro and in Vivo. J Am Chem Soc 2020; 142:1265-1277. [PMID: 31895985 DOI: 10.1021/jacs.9b09782] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
It is crucial to deliver anticancer drugs to target cells with high precision and efficiency. While nanomaterials have been shown to enhance the delivery efficiency once they reach the target, it remains challenging for precise drug delivery to overcome the nonspecific adsorption and off-target effect. To meet this challenge, we report herein the design of a novel DNA nanostructure to act as a DNA nanoscale precision-guided missile (D-PGM) for highly efficient loading and precise delivery of chemotherapeutic agents to specific target cells. The D-PGM consists of two parts: a warhead (WH) and a guidance/control (GC). The WH is a rod-like DNA nanostructure as a drug carrier, whose trunk is a three-dimensionally self-assembled DNA nanoscale architecture from the programmed hybridization among two palindromic DNA sequences in the x-y dimension and two common DNA oligonucleotides in the z direction, making the WH possess a high payload capacity of drugs. The GC is an aptamer-based logic gate assembled in a highly organized fashion capable of performing cell-subtype-specific recognition via the sequential disassembly, mediated by cell-anchored aptamers. Because of the cooperative effects between the WH and the GC, the GC logic gates operate like the guidance and control system in a precision-guided missile to steer the doxorubicin (DOX)-loaded DNA WH toward target cancer cells, leading to selective and enhanced therapeutic efficacy. Moreover, fluorophores attached to different locations of D-PGM and DOX fluorescence dequenching upon release enable intracellular tracing of the DNA nanostructures and drugs. The results demonstrate that by mimicking the functionalities of a military precision-guided missile to design the sequential disassembly of the GC system in multistimuli-responsive fashion, our intrinsically biocompatible and degradable D-PGM can accurately identify target cancer cells in complex biological milieu and achieve active targeted drug delivery. The success of this strategy paves the way for specific cell identity and targeted cancer therapy.
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Affiliation(s)
- Changhe Ouyang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China
| | - Songbai Zhang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China.,Department of Chemistry , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States.,College of Chemistry and Materials Engineering , Hunan University of Arts and Science , Changde 415000 , China
| | - Chang Xue
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China
| | - Xin Yu
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China
| | - Huo Xu
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China
| | - Zhenmeng Wang
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China
| | - Yi Lu
- Department of Chemistry , University of Illinois at Urbana-Champaign , Urbana , Illinois 61801 , United States
| | - Zai-Sheng Wu
- Cancer Metastasis Alert and Prevention Center, Fujian Provincial Key Laboratory of Cancer Metastasis Chemoprevention and Chemotherapy, National & Local Joint Biomedical Engineering Research Center on Photodynamic Technologies, State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry , Fuzhou University , Fuzhou 350108 , China
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Wang M, Wu B, Shah SN, Lu P, Lu Q. Aminoglycoside Enhances the Delivery of Antisense Morpholino Oligonucleotides In Vitro and in mdx Mice. MOLECULAR THERAPY. NUCLEIC ACIDS 2019; 16:663-674. [PMID: 31121478 PMCID: PMC6529765 DOI: 10.1016/j.omtn.2019.04.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/23/2019] [Accepted: 04/23/2019] [Indexed: 01/16/2023]
Abstract
Antisense oligonucleotide (AO) therapy has been the specific treatment for Duchenne muscular dystrophy, with ongoing clinical trials. However, therapeutic applications of AOs remain limited, particularly because of the lack of efficient cellular delivery methods imperative for achieving efficacy. In this study, we investigated a few aminoglycosides (AGs) for their potential to improve the delivery of antisense phosphorodiamidate morpholino oligomer (PMO) both in vitro and in vivo. AGs had lower cytotoxicity compared with Endoporter, the currently most effective delivery reagent for PMO in vitro, and improved efficiency in PMO delivery 9- to 15-fold over PMO alone. Significant enhancement in systemic PMO-targeted dystrophin exon 23 skipping was observed in mdx mice, up to a 6-fold increase with AG3 (kanamycin) and AG7 (sisomicin) compared with PMO only. No muscle damage could be detected clearly with the test dosages. These results establish AGs as PMO delivery-enhancing agents for treating muscular dystrophy or other diseases.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28203, USA.
| | - Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28203, USA
| | - Sapana N Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28203, USA
| | - Peijuan Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28203, USA
| | - Qilong Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28203, USA
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Wu B, Wang M, Shah S, Lu QL. In Vivo Evaluation of Dystrophin Exon Skipping in mdx Mice. Methods Mol Biol 2019; 1828:231-247. [PMID: 30171545 DOI: 10.1007/978-1-4939-8651-4_14] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Dystrophin exon skipping in mdx mice has been the key model for the development of antisense therapy in vivo. Evaluation of exon skipping in this model involves the following two aspects: (1) efficiency and accuracy of exon skipping and levels of dystrophin expression determined by RT-PCR, immunochemistry, and western blotting; (2) therapeutic effects on muscle pathology and functions assessed by histology and functional assays including grip strength measurement, treadmill test, echocardiogram, and hemodynamics for cardiac functions. Here we describe some key considerations and the essential methodologies in detail for exon skipping in mdx mice.
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Affiliation(s)
- Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Neuromuscular/ALS Center, Carolinas Medical Center, Charlotte, NC, USA.
| | - Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Neuromuscular/ALS Center, Carolinas Medical Center, Charlotte, NC, USA
| | - Sapana Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Neuromuscular/ALS Center, Carolinas Medical Center, Charlotte, NC, USA
| | - Qi Long Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Neuromuscular/ALS Center, Carolinas Medical Center, Charlotte, NC, USA.
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8
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Wang M, Wu B, Shah SN, Lu P, Lu Q. Saponins as Natural Adjuvant for Antisense Morpholino Oligonucleotides Delivery In Vitro and in mdx Mice. MOLECULAR THERAPY. NUCLEIC ACIDS 2018; 11:192-202. [PMID: 29858054 PMCID: PMC5992344 DOI: 10.1016/j.omtn.2018.02.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 02/14/2018] [Accepted: 02/14/2018] [Indexed: 01/16/2023]
Abstract
Antisense oligonucleotide (AON) therapy for Duchenne muscular dystrophy has drawn great attention in preclinical and clinical trials, but its therapeutic applications are still limited due to inefficient delivery. In this study, we investigated a few saponins for their potential to improve delivery performance of an antisense phosphorodiamidate morpholino oligomer (PMO) both in vitro and in vivo. The results showed that these saponins, especially digitonin and tomatine, improve the delivery efficiency of PMO comparable to Endo-Porter-mediated PMO delivery in vitro. The significant enhancement of PMO targeting to dystrophin exon 23 delivery was further observed in mdx mice up to 7-fold with the digitonin as compared to PMO alone. Cytotoxicity of the digitonin and glycyrrhizin was lower than Endo-Porter in vitro and not clearly detected in vivo under the tested concentrations. These results demonstrate that optimization of saponins in molecular size and composition are key factors to achieve enhanced PMO exon-skipping efficiency. The higher efficiency and lower toxicity endow saponins as gene/AON delivery enhancing agents for treating muscular dystrophy or other diseases.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Boulevard, Charlotte, NC 28203, USA.
| | - Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Boulevard, Charlotte, NC 28203, USA
| | - Sapana N Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Boulevard, Charlotte, NC 28203, USA
| | - Peijuan Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Boulevard, Charlotte, NC 28203, USA
| | - Qilong Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Department of Neurology, Cannon Research Center, Carolinas Medical Center, 1000 Blythe Boulevard, Charlotte, NC 28203, USA
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Wang M, Wu B, Tucker JD, Shah SN, Lu P, Bollinger LE, Lu Q. Tween 85-Modified Low Molecular Weight PEI Enhances Exon-Skipping of Antisense Morpholino Oligomer In Vitro and in mdx Mice. MOLECULAR THERAPY. NUCLEIC ACIDS 2017; 9:120-131. [PMID: 29246291 PMCID: PMC5633364 DOI: 10.1016/j.omtn.2017.09.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 09/13/2017] [Accepted: 09/13/2017] [Indexed: 01/16/2023]
Abstract
We investigated a series of Tween 85 modified low molecular weight polyethylenimine (LPEI, 0.8k/1.2k/2.0k)-copolymers (Zs) through simple formulation and covalent conjugation with phosphorodiamidate morpholino oligomer (PMO) for their potential to enhance delivery in vitro and in dystrophic mdx mice. Z polymers significantly enhanced PMO-induced exon-skipping in a GFP reporter-based cell culture system. Application of optimized formulations of Zs with PMO targeted to dystrophin exon 23 demonstrated a significant increase in exon-skipping efficiency in mdx mice. Consistent with our observations in vitro, optimization of molecular size and hydropholic-lipopholic balance (HLB) of polymers are important factors to achieve enhanced PMO delivery in vivo. The best formulation of Zs enhanced PMO delivery with 20- and 6-fold over PMO alone in vitro and in vivo, respectively. Further, chemical conjugation of the polymer and PMO exhibits greater benefit than polymer/PMO simple formulation in PMO delivery efficiency. Observed cytotoxicity of the Zs was lower than Endo-porter and PEI 25k in vitro, and no tissue toxicity was clearly detected with the Zs at the dosage tested. These results indicate the potential of the Zs as effective and safe PMO delivery carriers for treating diseases such as muscular dystrophy.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA.
| | - Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA
| | - Jason D Tucker
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA
| | - Sapana N Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA
| | - Peijuan Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA
| | - Lauren E Bollinger
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA
| | - Qilong Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Carolinas Medical Center, 1000 Blythe Blvd., Charlotte, NC 28231, USA
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Wang M, Wu B, Shah SN, Lu P, Lu Q. Polyquaternium-mediated delivery of morpholino oligonucleotides for exon-skipping in vitro and in mdx mice. Drug Deliv 2017; 24:952-961. [PMID: 28633548 PMCID: PMC8241187 DOI: 10.1080/10717544.2017.1337827] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 05/30/2017] [Accepted: 05/30/2017] [Indexed: 12/13/2022] Open
Abstract
Antisense oligonucleotide therapy for Duchenne muscular dystrophy has shown great potential in preclinical and clinical trials, but its therapeutic applications are still limited due to inefficient delivery. In this study, we investigated a few polyquaterniums (PQs) with different size and composition for their potential to improve delivery performance of an antisense phosphorodiamidate morpholino oligomer (PMO) both in vitro and in vivo. The results showed that LuviquatTM series, especially PQ-1 and PQ-3, promoted the exon-skipping efficiency comparable to Endoporter-mediated PMO delivery in vitro. Significant enhancement in skipping dystrophin exon 23 has also been achieved with PQ-3 up to seven-fold when compared to PMO alone in mdx mice. Cytotoxicity of the PQs was lower than Endoporter and PEI 25 K in vitro and muscle damage not clearly detected in vivo under the tested concentrations. These results together demonstrate that the optimization of PQ in molecular size, composition and distribution of positive charges is the key factor to achieve enhanced PMO exon-skipping efficiency. The higher efficiency and lower toxicity endow polyquaternium series as AO delivery enhancing agents for treating muscular dystrophy and other diseases.
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Affiliation(s)
- Mingxing Wang
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Cannon Research Center, Carolinas Medical Center, Charlotte, NC, United States
| | - Bo Wu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Cannon Research Center, Carolinas Medical Center, Charlotte, NC, United States
| | - Sapana N Shah
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Cannon Research Center, Carolinas Medical Center, Charlotte, NC, United States
| | - Peijuan Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Cannon Research Center, Carolinas Medical Center, Charlotte, NC, United States
| | - Qilong Lu
- McColl-Lockwood Laboratory for Muscular Dystrophy Research, Cannon Research Center, Carolinas Medical Center, Charlotte, NC, United States
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Sardone V, Zhou H, Muntoni F, Ferlini A, Falzarano MS. Antisense Oligonucleotide-Based Therapy for Neuromuscular Disease. Molecules 2017; 22:molecules22040563. [PMID: 28379182 PMCID: PMC6154734 DOI: 10.3390/molecules22040563] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/28/2017] [Accepted: 03/14/2017] [Indexed: 02/06/2023] Open
Abstract
Neuromuscular disorders such as Duchenne Muscular Dystrophy and Spinal Muscular Atrophy are neurodegenerative genetic diseases characterized primarily by muscle weakness and wasting. Until recently there were no effective therapies for these conditions, but antisense oligonucleotides, a new class of synthetic single stranded molecules of nucleic acids, have demonstrated promising experimental results and are at different stages of regulatory approval. The antisense oligonucleotides can modulate the protein expression via targeting hnRNAs or mRNAs and inducing interference with splicing, mRNA degradation, or arrest of translation, finally, resulting in rescue or reduction of the target protein expression. Different classes of antisense oligonucleotides are being tested in several clinical trials, and limitations of their clinical efficacy and toxicity have been reported for some of these compounds, while more encouraging results have supported the development of others. New generation antisense oligonucleotides are also being tested in preclinical models together with specific delivery systems that could allow some of the limitations of current antisense oligonucleotides to be overcome, to improve the cell penetration, to achieve more robust target engagement, and hopefully also be associated with acceptable toxicity. This review article describes the chemical properties and molecular mechanisms of action of the antisense oligonucleotides and the therapeutic implications these compounds have in neuromuscular diseases. Current strategies and carrier systems available for the oligonucleotides delivery will be also described to provide an overview on the past, present and future of these appealing molecules.
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Affiliation(s)
- Valentina Sardone
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neuroscience Programme, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK.
| | - Haiyan Zhou
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neuroscience Programme, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK.
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neuroscience Programme, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK.
- MRC Centre for Neuromuscular Diseases, UCL Institute of Neurology, London WC1N 3BG, UK.
| | - Alessandra Ferlini
- Dubowitz Neuromuscular Centre, Molecular Neurosciences Section, Developmental Neuroscience Programme, UCL Great Ormond Street Institute of Child Health, London WC1N 1EH, UK.
- UOL Medical Genetics, University of Ferrara, Ferrara 44121, Italy.
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Comi AM, Sahin M, Hammill A, Kaplan EH, Juhász C, North P, Ball KL, Levin AV, Cohen B, Morris J, Lo W, Roach ES. Leveraging a Sturge-Weber Gene Discovery: An Agenda for Future Research. Pediatr Neurol 2016; 58:12-24. [PMID: 27268758 PMCID: PMC5509161 DOI: 10.1016/j.pediatrneurol.2015.11.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 11/21/2015] [Indexed: 12/20/2022]
Abstract
Sturge-Weber syndrome (SWS) is a vascular neurocutaneous disorder that results from a somatic mosaic mutation in GNAQ, which is also responsible for isolated port-wine birthmarks. Infants with SWS are born with a cutaneous capillary malformation (port-wine birthmark) of the forehead or upper eyelid which can signal an increased risk of brain and/or eye involvement prior to the onset of specific symptoms. This symptom-free interval represents a time when a targeted intervention could help to minimize the neurological and ophthalmologic manifestations of the disorder. This paper summarizes a 2015 SWS workshop in Bethesda, Maryland that was sponsored by the National Institutes of Health. Meeting attendees included a diverse group of clinical and translational researchers with a goal of establishing research priorities for the next few years. The initial portion of the meeting included a thorough review of the recent genetic discovery and what is known of the pathogenesis of SWS. Breakout sessions related to neurology, dermatology, and ophthalmology aimed to establish SWS research priorities in each field. Key priorities for future development include the need for clinical consensus guidelines, further work to develop a clinical trial network, improvement of tissue banking for research purposes, and the need for multiple animal and cell culture models of SWS.
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Affiliation(s)
- Anne M Comi
- Department of Neurology, Kennedy Krieger Institute and Johns Hopkins University School of Medicine, Baltimore, Maryland; Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland.
| | - Mustafa Sahin
- Department of Radiology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts
| | - Adrienne Hammill
- Cancer and Blood Diseases Institute, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, Ohio
| | - Emma H Kaplan
- Department of Neurology, Kennedy Krieger Institute and Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Csaba Juhász
- Department of Pediatrics, Wayne State University School of Medicine, Detroit, Michigan; Department of Neurology, Wayne State University School of Medicine, Detroit, Michigan
| | - Paula North
- Department of Pathology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Karen L Ball
- The Sturge-Weber Foundation, Randolph, New Jersey
| | - Alex V Levin
- Department of Ophthalmology, Wills Eye Hospital, Sidney Kimmel Medical College, Thomas University, Philadelphia, Pennsylvania; Department of Pediatrics, Wills Eye Hospital, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Bernard Cohen
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland; Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Jill Morris
- National Institute of Neurologic Disorders and Stroke, National Institutes of Health, Bethesda, Maryland
| | - Warren Lo
- Departments of Pediatrics and Neurology, The Ohio State University College of Medicine and Nationwide Children's Hospital, Columbus, Ohio
| | - E Steve Roach
- Departments of Pediatrics and Neurology, The Ohio State University College of Medicine and Nationwide Children's Hospital, Columbus, Ohio
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