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Nsairat H, Khater D, Sayed U, Odeh F, Al Bawab A, Alshaer W. Liposomes: structure, composition, types, and clinical applications. Heliyon 2022; 8:e09394. [PMID: 35600452 PMCID: PMC9118483 DOI: 10.1016/j.heliyon.2022.e09394] [Citation(s) in RCA: 192] [Impact Index Per Article: 96.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 02/19/2022] [Accepted: 05/06/2022] [Indexed: 12/18/2022] Open
Abstract
Liposomes are now considered the most commonly used nanocarriers for various potentially active hydrophobic and hydrophilic molecules due to their high biocompatibility, biodegradability, and low immunogenicity. Liposomes also proved to enhance drug solubility and controlled distribution, as well as their capacity for surface modifications for targeted, prolonged, and sustained release. Based on the composition, liposomes can be considered to have evolved from conventional, long-circulating, targeted, and immune-liposomes to stimuli-responsive and actively targeted liposomes. Many liposomal-based drug delivery systems are currently clinically approved to treat several diseases, such as cancer, fungal and viral infections; more liposomes have reached advanced phases in clinical trials. This review describes liposomes structure, composition, preparation methods, and clinical applications.
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Affiliation(s)
- Hamdi Nsairat
- Pharmacological and Diagnostic Research Center, Faculty of Pharmacy, Al-Ahliyya Amman University, Amman, 19328, Jordan
| | - Dima Khater
- Department of Chemistry, Faculty of Arts and Science, Applied Science Private University, Amman, Jordan
| | - Usama Sayed
- Department of Biology, The University of Jordan, Amman, 11942, Jordan
| | - Fadwa Odeh
- Department of Chemistry, The University of Jordan, Amman, 11942, Jordan
| | - Abeer Al Bawab
- Department of Chemistry, The University of Jordan, Amman, 11942, Jordan.,Hamdi Mango Center for Scientific Research, The University of Jordan, Amman, 11942, Jordan
| | - Walhan Alshaer
- Cell Therapy Center, The University of Jordan, Amman, 11942, Jordan
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Chopra H, Bibi S, Mishra AK, Tirth V, Yerramsetty SV, Murali SV, Ahmad SU, Mohanta YK, Attia MS, Algahtani A, Islam F, Hayee A, Islam S, Baig AA, Emran TB. Nanomaterials: A Promising Therapeutic Approach for Cardiovascular Diseases. JOURNAL OF NANOMATERIALS 2022; 2022:1-25. [DOI: 10.1155/2022/4155729] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Cardiovascular diseases (CVDs) are a primary cause of death globally. A few classic and hybrid treatments exist to treat CVDs. However, they lack in both safety and effectiveness. Thus, innovative nanomaterials for disease diagnosis and treatment are urgently required. The tiny size of nanomaterials allows them to reach more areas of the heart and arteries, making them ideal for CVDs. Atherosclerosis causes arterial stenosis and reduced blood flow. The most common treatment is medication and surgery to stabilize the disease. Nanotechnologies are crucial in treating vascular disease. Nanomaterials may be able to deliver medications to lesion sites after being infused into the circulation. Newer point-of-care devices have also been considered together with nanomaterials. For example, this study will look at the use of nanomaterials in imaging, diagnosing, and treating CVDs.
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Affiliation(s)
- Hitesh Chopra
- Chitkara College of Pharmacy, Chitkara University, Punjab 140401, India
| | - Shabana Bibi
- Yunnan Herbal Laboratory, College of Ecology and Environmental Sciences, Yunnan University, Kunming, 650091 Yunnan, China
- The International Joint Research Center for Sustainable Utilization of Cordyceps Bioresources in China and Southeast Asia, Yunnan University, Kunming, 650091 Yunnan, China
| | - Awdhesh Kumar Mishra
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongsangbuk-do, Republic of Korea
| | - Vineet Tirth
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421 Asir, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, Abha, 61413 Asir, P.O. Box No. 9004, Saudi Arabia
| | - Sree Vandana Yerramsetty
- Department of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu 613402, India
| | - Sree Varshini Murali
- Department of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, Tamil Nadu 613402, India
| | - Syed Umair Ahmad
- Department of Bioinformatics, Hazara University, Mansehra, Pakistan
| | - Yugal Kishore Mohanta
- Department of Applied Biology, University of Science and Technology Meghalaya, Ri-Bhoi 793101, India
| | - Mohamed S. Attia
- Department of Pharmaceutics, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt
| | - Ali Algahtani
- Mechanical Engineering Department, College of Engineering, King Khalid University, Abha, 61421 Asir, Saudi Arabia
- Research Center for Advanced Materials Science (RCAMS), King Khalid University, Guraiger, Abha, 61413 Asir, P.O. Box No. 9004, Saudi Arabia
| | - Fahadul Islam
- Department of Pharmacy, Faculty of Allied Health Sciences, Daffodil International University, Dhaka 1207, Bangladesh
| | - Abdul Hayee
- Department of Immunology, Faculty of Medicine, Academic Assembly, University of Toyama, Toyama, Japan
| | - Saiful Islam
- Civil Engineering Department, College of Engineering, King Khalid University, Abha, 61421 Asir, Saudi Arabia
| | - Atif Amin Baig
- Unit of Biochemistry, Faculty of Medicine, Universiti Sultan Zainal Abidin, Malaysia
| | - Talha Bin Emran
- Department of Pharmacy, BGC Trust University Bangladesh, Chittagong 4381, Bangladesh
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3
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Lotter C, Alter CL, Bolten JS, Detampel P, Palivan CG, Einfalt T, Huwyler J. Incorporation of phosphatidylserine improves efficiency of lipid based gene delivery systems. Eur J Pharm Biopharm 2022; 172:134-143. [PMID: 35181492 DOI: 10.1016/j.ejpb.2022.02.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 02/11/2022] [Accepted: 02/11/2022] [Indexed: 11/04/2022]
Abstract
The essential homeostatic process of dead cell clearance (efferocytosis) is used by viruses in an act of apoptotic mimicry. Among others, virions leverage phosphatidylserine (PS) as an essential "eat me" signal in viral envelopes to increase their infectivity. In a virus-inspired biomimetic approach, we demonstrate that PS can be incorporated into non-viral lipid nanoparticle (LNP) pDNA/mRNA constructs to enhance cellular transfection. The inclusion of the bioactive PS leads to an increased ability of LNPs to deliver nucleic acids invitro to cultured HuH-7 hepatocellular carcinoma cells resulting in a 6-fold enhanced expression of a transgene. Optimal PS concentrations are in the range of 2.5 to 5% of total lipids. PS-decorated mRNA-LNPs show a 5.2-fold enhancement of invivo transfection efficiency as compared to mRNA-LNPs devoid of PS. Effects were less pronounced for PS-decorated pDNA-LNPs (3.2-fold increase). Incorporation of small, defined amounts of PS into gene delivery vectors opens new avenues for efficient gene therapy and can be easily extended to other therapeutic systems.
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Affiliation(s)
- Claudia Lotter
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Claudio Luca Alter
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland; Swiss Nanoscience Institute, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland
| | - Jan Stephan Bolten
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Pascal Detampel
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Cornelia G Palivan
- Swiss Nanoscience Institute, University of Basel, Klingelbergstrasse 82, 4056 Basel, Switzerland; Department of Chemistry, University of Basel, Mattenstrasse 24a, BPR 1096, 4003 Basel, Switzerland
| | - Tomaž Einfalt
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Jörg Huwyler
- Department of Pharmaceutical Sciences, Division of Pharmaceutical Technology, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland.
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Distinct SARS-CoV-2 antibody reactivity patterns elicited by natural infection and mRNA vaccination. NPJ Vaccines 2021; 6:132. [PMID: 34737318 PMCID: PMC8568980 DOI: 10.1038/s41541-021-00396-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 10/08/2021] [Indexed: 01/28/2023] Open
Abstract
We analyzed data from two ongoing COVID-19 longitudinal serological surveys in Orange County, CA., between April 2020 and March 2021. A total of 8476 finger stick blood specimens were collected before and after a vaccination campaign. IgG levels were determined using a multiplex antigen microarray containing antigens from SARS-CoV-2, SARS, MERS, Common CoV, and Influenza. Twenty-six percent of specimens from unvaccinated Orange County residents in December 2020 were SARS-CoV-2 seropositive; out of 852 seropositive individuals 77 had symptoms and 9 sought medical care. The antibody response was predominantly against nucleocapsid (NP), full length, and S2 domain of spike. Anti-receptor binding domain (RBD) reactivity was low and not cross-reactive against SARS S1 or SARS RBD. A vaccination campaign at the University of California Irvine Medical Center (UCIMC) started on December, 2020 and 6724 healthcare workers were vaccinated within 3 weeks. Seroprevalence increased from 13% pre-vaccination to 79% post-vaccination in January, 93% in February, and 99% in March. mRNA vaccination induced higher antibody levels than natural exposure, especially against the RBD domain and cross-reactivity against SARS RBD and S1 was observed. Nucleocapsid protein antibodies can be used to distinguish vaccinees to classify pre-exposure to SARS-CoV-2 Previously infected individuals developed higher antibody titers to the vaccine than non pre-exposed individuals. Hospitalized patients in intensive care with severe disease reach significantly higher antibody levels than mild cases, but lower antibody levels compared to the vaccine. These results indicate that mRNA vaccination rapidly induces a much stronger and broader antibody response than SARS-CoV-2 infection.
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Charbe NB, Amnerkar ND, Ramesh B, Tambuwala MM, Bakshi HA, Aljabali AA, Khadse SC, Satheeshkumar R, Satija S, Metha M, Chellappan DK, Shrivastava G, Gupta G, Negi P, Dua K, Zacconi FC. Small interfering RNA for cancer treatment: overcoming hurdles in delivery. Acta Pharm Sin B 2020; 10:2075-2109. [PMID: 33304780 PMCID: PMC7714980 DOI: 10.1016/j.apsb.2020.10.005] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 06/24/2020] [Accepted: 10/08/2020] [Indexed: 12/11/2022] Open
Abstract
In many ways, cancer cells are different from healthy cells. A lot of tactical nano-based drug delivery systems are based on the difference between cancer and healthy cells. Currently, nanotechnology-based delivery systems are the most promising tool to deliver DNA-based products to cancer cells. This review aims to highlight the latest development in the lipids and polymeric nanocarrier for siRNA delivery to the cancer cells. It also provides the necessary information about siRNA development and its mechanism of action. Overall, this review gives us a clear picture of lipid and polymer-based drug delivery systems, which in the future could form the base to translate the basic siRNA biology into siRNA-based cancer therapies.
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Key Words
- 1,3-propanediol, PEG-b-PDMAEMA-b-Ppy
- 2-propylacrylicacid, PAH-b-PDMAPMA-b-PAH
- APOB, apolipoprotein B
- AQP-5, aquaporin-5
- AZEMA, azidoethyl methacrylate
- Atufect01, β-l-arginyl-2,3-l-diaminopropionicacid-N-palmityl-N-oleyl-amide trihydrochloride
- AuNPs, gold nanoparticles
- B-PEI, branched polyethlenimine
- BMA, butyl methacrylate
- CFTR, cystic fibrosis transmembrane conductance regulator gene
- CHEMS, cholesteryl hemisuccinate
- CHOL, cholesterol
- CMC, critical micelles concentration
- Cancer
- DC-Chol, 3β-[N-(N′,N′-dimethylaminoethane)carbamoyl]cholesterol
- DMAEMA, 2-dimethylaminoethyl methacrylate
- DNA, deoxyribonucleic acid
- DOPC, dioleylphosphatidyl choline
- DOPE, dioleylphosphatidyl ethanolamine
- DOTAP, N-[1-(2,3-dioleoyloxy)propyl]-N,N,N-trimethylammonium methyl-sulfate
- DOTMA, N-[1-(2,3-dioleyloxy)propy]-N,N,N-trimethylammoniumchloride
- DOX, doxorubicin
- DSGLA, N,N-dis-tearyl-N-methyl-N-2[N′-(N2-guanidino-l-lysinyl)] aminoethylammonium chloride
- DSPC, 1,2-distearoyl-sn-glycero-3-phosphocholine
- DSPE, 1,2-distearoyl-sn-glycero-3-phosphorylethanolamine
- DSPE-MPEG, 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000] (ammonium salt)
- DSPE-PEG-Mal: 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[maleimide(polyethylene glycol)-2000] (mmmonium salt), EPR
- Liposomes
- Micelles
- N-acetylgalactosamine, HIF-1α
- Nanomedicine
- PE-PCL-b-PNVCL, pentaerythritol polycaprolactone-block-poly(N-vinylcaprolactam)
- PLA, poly-l-arginine
- PLGA, poly lactic-co-glycolic acid
- PLK-1, polo-like kinase 1
- PLL, poly-l-lysine
- PPES-b-PEO-b-PPES, poly(4-(phenylethynyl)styrene)-block-PEO-block-poly(4-(phenylethynyl)styrene)
- PTX, paclitaxel
- PiRNA, piwi-interacting RNA
- Polymer
- RES, reticuloendothelial system
- RGD, Arg-Gly-Asp peptide
- RISC, RNA-induced silencing complex
- RNA, ribonucleic acid
- RNAi, RNA interference
- RNAse III, ribonuclease III enzyme
- SEM, scanning electron microscope
- SNALP, stable nucleic acid-lipid particles
- SiRNA, short interfering rNA
- Small interfering RNA (siRNA)
- S–Au, thio‒gold
- TCC, transitional cell carcinoma
- TEM, transmission electron microscopy
- Tf, transferrin
- Trka, tropomyosin receptor kinase A
- USPIO, ultra-small superparamagnetic iron oxide nanoparticles
- UV, ultraviolet
- VEGF, vascular endothelial growth factor
- ZEBOV, Zaire ebola virus
- enhanced permeability and retention, Galnac
- hypoxia-inducible factor-1α, KSP
- kinesin spindle protein, LDI
- lipid-protamine-DNA/hyaluronic acid, MDR
- lysine ethyl ester diisocyanate, LPD/LPH
- messenger RNA, MTX
- methotrexate, NIR
- methoxy polyethylene glycol-polycaprolactone, mRNA
- methoxypoly(ethylene glycol), MPEG-PCL
- micro RNA, MPEG
- multiple drug resistance, MiRNA
- nanoparticle, NRP-1
- near-infrared, NP
- neuropilin-1, PAA
- poly(N,N-dimethylacrylamide), PDO
- poly(N-isopropyl acrylamide), pentaerythritol polycaprolactone-block-poly(N-isopropylacrylamide)
- poly(acrylhydrazine)-block-poly(3-dimethylaminopropyl methacrylamide)-block-poly(acrylhydrazine), PCL
- poly(ethylene glycol)-block-poly(2-dimethylaminoethyl methacrylate)-block poly(pyrenylmethyl methacrylate), PEG-b-PLL
- poly(ethylene glycol)-block-poly(l-lysine), PEI
- poly(ethylene oxide)-block-poly(2-(diethylamino)ethyl methacrylate)-stat-poly(methoxyethyl methacrylate), PEO-b-PCL
- poly(ethylene oxide)-block-poly(Ε-caprolactone), PE-PCL-b-PNIPAM
- poly(Ε-caprolactone), PCL-PEG
- poly(Ε-caprolactone)-polyethyleneglycol-poly(l-histidine), PCL-PEI
- polycaprolactone-polyethyleneglycol, PCL-PEG-PHIS
- polycaprolactone-polyethylenimine, PDMA
- polyethylenimine, PEO-b-P(DEA-Stat-MEMA
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Affiliation(s)
- Nitin Bharat Charbe
- Departamento de Quimica Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Sri Adichunchunagiri College of Pharmacy, Sri Adichunchunagiri University, BG Nagar, Karnataka 571418, India
- Corresponding authors.
| | - Nikhil D. Amnerkar
- Adv V. R. Manohar Institute of Diploma in Pharmacy, Nagpur, Maharashtra 441110, India
| | - B. Ramesh
- Sri Adichunchunagiri College of Pharmacy, Sri Adichunchunagiri University, BG Nagar, Karnataka 571418, India
| | - Murtaza M. Tambuwala
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, Northern Ireland BT52 1SA, UK
| | - Hamid A. Bakshi
- School of Pharmacy and Pharmaceutical Science, Ulster University, Coleraine, Northern Ireland BT52 1SA, UK
| | - Alaa A.A. Aljabali
- Faculty of Pharmacy, Department of Pharmaceutics and Pharmaceutical Technology, Yarmouk University, Irbid 21163, Jordan
| | - Saurabh C. Khadse
- Department of Pharmaceutical Chemistry, R.C. Patel Institute of Pharmaceutical Education and Research, Dist. Dhule, Maharashtra 425 405, India
| | - Rajendran Satheeshkumar
- Departamento de Quimica Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Saurabh Satija
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411 Punjab, India
| | - Meenu Metha
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
- School of Pharmaceutical Sciences, Lovely Professional University, Phagwara 144411 Punjab, India
| | - Dinesh Kumar Chellappan
- Department of Life Sciences, School of Pharmacy, International Medical University, Bukit Jalil 57000, Kuala Lumpur, Malaysia
| | - Garima Shrivastava
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, Delhi, New Delhi 110016, India
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jagatpura, Jaipur 302017, India
| | - Poonam Negi
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan 173229, India
| | - Kamal Dua
- Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, NSW 2007, Australia
- School of Pharmaceutical Sciences, Shoolini University of Biotechnology and Management Sciences, Solan 173229, India
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute (HMRI) and School of Biomedical Sciences and Pharmacy, University of Newcastle, NSW 2308, Australia
| | - Flavia C. Zacconi
- Departamento de Quimica Orgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
- Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Católica de Chile, Santiago 4860, Chile
- Corresponding authors.
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6
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Pawlowska D, Janich C, Langner A, Dobner B, Wölk C, Brezesinski G. The Impact of Alkyl-Chain Purity on Lipid-Based Nucleic Acid Delivery Systems - Is the Utilization of Lipid Components with Technical Grade Justified? Chemphyschem 2019; 20:2110-2121. [PMID: 31265754 PMCID: PMC6771585 DOI: 10.1002/cphc.201900480] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/29/2019] [Indexed: 11/17/2022]
Abstract
The physicochemical properties and transfection efficacies of two samples of a cationic lipid have been investigated and compared in 2D (monolayers at the air/liquid interface) and 3D (aqueous bulk dispersions) model systems using different techniques. The samples differ only in their chain composition due to the purity of the oleylamine (chain precursor). Lipid 8 (using the oleylamine of technical grade for cost-efficient synthesis) shows lateral phase separation in the Langmuir layers. However, the amount of attached DNA, determined by IRRAS, is for both samples the same. In 3D systems, lipid 8 p forms cubic phases, which disappear after addition of DNA. At physiological temperatures, both lipids (alone and in mixture with cholesterol) assemble to lamellar aggregates and exhibit comparable DNA delivery efficiency. This study demonstrates that non-lamellar structures are not compulsory for high transfection rates. The results legitimate the utilization of oleyl chains of technical grade in the synthesis of cationic transfection lipids.
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Affiliation(s)
- Dorota Pawlowska
- Max Planck Institute of Colloids and Interfaces, Science Park Potsdam-GolmAm Mühlenberg 114476PotsdamGermany
- Warsaw University of Technology, Faculty of ChemistryInstitute of Biotechnologyul. Noakowskiego 300-664WarsawPoland
| | - Christopher Janich
- Martin Luther University Halle-WittenbergInstitute of Pharmacy, Research Group Biochemical PharmacyWolfgang-Langenbeck-Str. 406120 Halle (Saale)Germany
| | - Andreas Langner
- Martin Luther University Halle-WittenbergInstitute of Pharmacy, Research Group Biochemical PharmacyWolfgang-Langenbeck-Str. 406120 Halle (Saale)Germany
| | - Bodo Dobner
- Martin Luther University Halle-WittenbergInstitute of Pharmacy, Research Group Biochemical PharmacyWolfgang-Langenbeck-Str. 406120 Halle (Saale)Germany
| | - Christian Wölk
- Martin Luther University Halle-WittenbergInstitute of Pharmacy, Research Group Biochemical PharmacyWolfgang-Langenbeck-Str. 406120 Halle (Saale)Germany
| | - Gerald Brezesinski
- Max Planck Institute of Colloids and Interfaces, Science Park Potsdam-GolmAm Mühlenberg 114476PotsdamGermany
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7
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Buck J, Grossen P, Cullis PR, Huwyler J, Witzigmann D. Lipid-Based DNA Therapeutics: Hallmarks of Non-Viral Gene Delivery. ACS NANO 2019; 13:3754-3782. [PMID: 30908008 DOI: 10.1021/acsnano.8b07858] [Citation(s) in RCA: 198] [Impact Index Per Article: 39.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Gene therapy is a promising strategy for the treatment of monogenic disorders. Non-viral gene delivery systems including lipid-based DNA therapeutics offer the opportunity to deliver an encoding gene sequence specifically to the target tissue and thus enable the expression of therapeutic proteins in diseased cells. Currently, available gene delivery approaches based on DNA are inefficient and require improvements to achieve clinical utility. In this Review, we discuss state-of-the-art lipid-based DNA delivery systems that have been investigated in a preclinical setting. We emphasize factors influencing the delivery and subsequent gene expression in vitro, ex vivo, and in vivo. In addition, we cover aspects of nanoparticle engineering and optimization for DNA therapeutics. Finally, we highlight achievements of lipid-based DNA therapies in clinical trials.
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Affiliation(s)
- Jonas Buck
- Division of Pharmaceutical Technology, Department of Pharmaceutical Sciences , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Philip Grossen
- Division of Pharmaceutical Technology, Department of Pharmaceutical Sciences , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Pieter R Cullis
- Department of Biochemistry and Molecular Biology , University of British Columbia , 2350 Health Sciences Mall , Vancouver , British Columbia V6T 1Z3 , Canada
| | - Jörg Huwyler
- Division of Pharmaceutical Technology, Department of Pharmaceutical Sciences , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
| | - Dominik Witzigmann
- Division of Pharmaceutical Technology, Department of Pharmaceutical Sciences , University of Basel , Klingelbergstrasse 50 , 4056 Basel , Switzerland
- Department of Biochemistry and Molecular Biology , University of British Columbia , 2350 Health Sciences Mall , Vancouver , British Columbia V6T 1Z3 , Canada
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8
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Betker JL, Jones D, Childs CR, Helm KM, Terrell K, Nagel MA, Anchordoquy TJ. Nanoparticle uptake by circulating leukocytes: A major barrier to tumor delivery. J Control Release 2018; 286:85-93. [PMID: 30030182 PMCID: PMC6936323 DOI: 10.1016/j.jconrel.2018.07.031] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 07/05/2018] [Accepted: 07/16/2018] [Indexed: 12/18/2022]
Abstract
Decades of research into improving drug delivery to tumors has documented uptake of particulate delivery systems by resident macrophages in the lung, liver, and spleen, and correlated short circulation times with reduced tumor accumulation. An implicit assumption in these studies is that nanoparticles present in the blood are available for distribution to the tumor. This study documents significant levels of lipoplex uptake by circulating leukocytes, and its effect on distribution to the tumor and other organs. In agreement with previous studies, PEGylation dramatically extends circulation times and enhances tumor delivery. However, our studies suggest that this relationship is not straightforward, and that particle sequestration by leukocytes can significantly alter biodistribution, especially with non-PEGylated nanoparticle formulations. We conclude that leukocyte uptake should be considered in biodistribution studies, and that delivery to these circulating cells may present opportunities for treating viral infections and leukemia.
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Affiliation(s)
- Jamie L Betker
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Dallas Jones
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Christine R Childs
- Flow Cytometry Core Facility, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Karen M Helm
- Flow Cytometry Core Facility, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Kristina Terrell
- Flow Cytometry Core Facility, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Maria A Nagel
- Department of Neurology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Thomas J Anchordoquy
- Skaggs School of Pharmacy and Pharmaceutical Sciences, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
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9
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Young ATL, Lakey JRT, Murray AG, Moore RB. Gene Therapy: A Lipofection Approach for Gene Transfer into Primary Endothelial Cells. Cell Transplant 2017. [DOI: 10.3727/000000002783985495] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Despite the great potential of gene therapy to become a new treatment modality in future medicine, there are still many limitations to overcome before this gene approach can pass to the stage of human trial. The foremost obstacle is the development of a safe, efficient, and efficacious vector system for in vivo gene application. This study evaluated the efficacy of lipofection as a gene delivery vehicle into primary endothelial cells. Transfection efficiency of several lipid-based reagents (Effectene, Fugene 6, DOTAP) was examined at experimental temperatures of 37°C, 24°C, and 6°C. Human umbilical vein endothelial cells (HUVECs) were transfected with the enhanced green fluorescent protein (EGFP) using precise amounts of DNA (Effectene, 0.2 μg; Fugene 6, 0.5 μg; DOTAP, 2.5 μg) and lipids (Effectene, 10 μl; Fugene 6, 6 μl; DOTAP, 15 μl) optimized in our laboratory. Duration of incubation in the DNA/lipid transfection mixture varied for each lipid transfectant as follows: 5 h for both Fugene 6 and DOTAP and 3 h for Effectene. Efficiency of transfection was quantified by microscopic evaluation of EFGP expression in a minimum of 100 cells per group. Transfection efficiencies achieved with these lipofection agents were 34 ± 1.3% (mean ± SEM), 33 ± 1.4%, and 18 ± 1.5% for Effectene, Fugene 6, and DOTAP, respectively, at 37°C. Transfection results were lower at 24°C with mean efficiencies of 26 ± 2.4% for Effectene, 14 ± 2.9% for Fugene 6, and 15 ± 3.2% for DOTAP. Furthermore, mean efficiencies at 6°C were 6 ± 0.5%, 8 ± 1.5%, and 6 ± 0.0% for Effectene, Fugene 6, and DOTAP, respectively. Efficiency of transfection appeared to be temperature dependent (ANOVA; p < 0.0001). In spite of a significant decrease (37°C vs. 24°C: p < 0.0001; 37°C vs. 6°C: p < 0.0001; 24°C vs. 6°C: p < 0.0115) in transfection efficiency at low temperatures, the successful in vitro gene manipulation renders lipofection a potential gene delivery strategy for in vivo gene therapy.
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Affiliation(s)
- A. T. L. Young
- Department of Surgery, Surgical-Medical Research Institute, University of Alberta, Edmonton, Canada T6G 2N8
| | - J. R. T. Lakey
- Department of Surgery, Surgical-Medical Research Institute, University of Alberta, Edmonton, Canada T6G 2N8
| | - A. G. Murray
- Department of Medicine, University of Alberta, Edmonton, Canada T6G 2N8
| | - R. B. Moore
- Department of Surgery, Surgical-Medical Research Institute, University of Alberta, Edmonton, Canada T6G 2N8
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Keeler AM, ElMallah MK, Flotte TR. Gene Therapy 2017: Progress and Future Directions. Clin Transl Sci 2017; 10:242-248. [PMID: 28383804 PMCID: PMC5504480 DOI: 10.1111/cts.12466] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 03/29/2017] [Indexed: 12/13/2022] Open
Affiliation(s)
- A M Keeler
- Horae Gene Therapy Center and Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - M K ElMallah
- Horae Gene Therapy Center and Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - T R Flotte
- Horae Gene Therapy Center and Department of Pediatrics, University of Massachusetts Medical School, Worcester, Massachusetts, USA
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11
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Zulliger R, Conley SM, Naash MI. Non-viral therapeutic approaches to ocular diseases: An overview and future directions. J Control Release 2015; 219:471-487. [PMID: 26439665 PMCID: PMC4699668 DOI: 10.1016/j.jconrel.2015.10.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 10/01/2015] [Accepted: 10/02/2015] [Indexed: 12/31/2022]
Abstract
Currently there are no viable treatment options for patients with debilitating inherited retinal degeneration. The vast variability in disease-inducing mutations and resulting phenotypes has hampered the development of therapeutic interventions. Gene therapy is a logical approach, and recent work has focused on ways to optimize vector design and packaging to promote optimized expression and phenotypic rescue after intraocular delivery. In this review, we discuss ongoing ocular clinical trials, which currently use viral gene delivery, but focus primarily on new advancements in optimizing the efficacy of non-viral gene delivery for ocular diseases. Non-viral delivery systems are highly customizable, allowing functionalization to improve cellular and nuclear uptake, bypassing cellular degradative machinery, and improving gene expression in the nucleus. Non-viral vectors often yield transgene expression levels lower than viral counterparts, however their favorable safety/immune profiles and large DNA capacity (critical for the delivery of large ocular disease genes) make their further development a research priority. Recent work on particle coating and vector engineering presents exciting ways to overcome limitations of transient/low gene expression levels, but also highlights the fact that further refinements are needed before use in the clinic.
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Affiliation(s)
- Rahel Zulliger
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204-5060, United States
| | - Shannon M Conley
- Department of Cell Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, United States
| | - Muna I Naash
- Department of Biomedical Engineering, University of Houston, Houston, TX 77204-5060, United States.
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12
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Crowley ST, Rice KG. "Evolving nanoparticle gene delivery vectors for the liver: What has been learned in 30 years". J Control Release 2015; 219:457-470. [PMID: 26439664 DOI: 10.1016/j.jconrel.2015.10.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 10/01/2015] [Accepted: 10/02/2015] [Indexed: 12/18/2022]
Abstract
Nonviral gene delivery to the liver has been under evolution for nearly 30years. Early demonstrations established relatively simple nonviral vectors could mediate gene expression in HepG2 cells which understandably led to speculation that these same vectors would be immediately successful at transfecting primary hepatocytes in vivo. However, it was soon recognized that the properties of a nonviral vector resulting in efficient transfection in vitro were uncorrelated with those needed to achieve efficient nonviral transfection in vivo. The discovery of major barriers to liver gene transfer has set the field on a course to design biocompatible vectors that demonstrate increased DNA stability in the circulation with correlating expression in liver. The improved understanding of what limits nonviral vector gene transfer efficiency in vivo has resulted in more sophisticated, low molecular weight vectors that allow systematic optimization of nanoparticle size, charge and ligand presentation. While the field has evolved DNA nanoparticles that are stable in the circulation, target hepatocytes, and deliver DNA to the cytosol, breaching the nucleus remains the last major barrier to a fully successful nonviral gene transfer system for the liver. The lessons learned along the way are fundamentally important to the design of all systemically delivered nanoparticle nonviral gene delivery systems.
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Affiliation(s)
- Samuel T Crowley
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Iowa, Iowa City, IA 52242,USA
| | - Kevin G Rice
- Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Iowa, Iowa City, IA 52242,USA.
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13
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Enhancing the pharmacokinetic/pharmacodynamic properties of therapeutic nucleotides using lipid nanoparticle systems. Future Med Chem 2015; 7:1751-69. [PMID: 26399560 DOI: 10.4155/fmc.15.108] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Although activity has been reported in vivo, free nucleic acid-based drugs are rapidly degraded and cleared following systemic administration. To address these challenges and improve the potency and bioavailability of genetic drugs, significant efforts have been made to develop effective delivery systems of which lipid nanoparticles (LNP) represent the most advanced technology currently available. In this review, we will describe and discuss the improvements to the pharmacokinetic and pharmacodynamic properties of nucleic acid-based drugs mediated by LNP delivery. It is envisioned that the significant improvements in potency and safety, largely driven by the development of LNP encapsulated siRNA drugs, will be translatable to other types of genetic drugs and enable the rapid development of potent molecular tools and drugs.
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14
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Movahedi F, Hu RG, Becker DL, Xu C. Stimuli-responsive liposomes for the delivery of nucleic acid therapeutics. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2015; 11:1575-84. [PMID: 25819885 DOI: 10.1016/j.nano.2015.03.006] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 02/07/2015] [Accepted: 03/11/2015] [Indexed: 10/23/2022]
Abstract
UNLABELLED Nucleic acid therapeutics (NATs) are valuable tools in the modulation of gene expression in a highly specific manner. So far, NATs have been actively pursued in both pre-clinical and clinical studies to treat diseases such as cancer, infectious and inflammatory diseases. However, the clinical application of NATs remains a considerable challenge owing to their limited cellular uptake, low biological stability, off-target effect, and unfavorable pharmacokinetics. One concept to address these issues is to deliver NATs within stimuli-responsive liposomes, which release their contents of NATs upon encountering environmental changes such as temperature, pH, and ion strength. In this case, before reaching the targeted tissue/organ, NATs are protected from degradation by enzymes and immune system. Once at the area of interest, localized and targeted delivery can be achieved with minimal influence to other parts of the body. Here, we discuss the latest developments and existing challenges in this field. FROM THE CLINICAL EDITOR Nucleic acid therapeutics have been shown to enhance or eliminate specific gene expression in experimental research. Unfortunately, clinical applications have so far not been realized due to problems of easy degradation and possible toxicity. The use of nanosized carriers such as liposomes to deliver nucleic acids is one solution to overcome these problems. In this review article the authors describe and discuss the potentials of various trigger-responsive "smart" liposomes, with a view to help other researchers to design better liposomal nucleic acid delivery systems.
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Affiliation(s)
- Fatemeh Movahedi
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | - Rebecca G Hu
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - David L Becker
- Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Chenjie Xu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore.
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15
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Deng Y, Wang CC, Choy KW, Du Q, Chen J, Wang Q, Li L, Chung TKH, Tang T. Therapeutic potentials of gene silencing by RNA interference: Principles, challenges, and new strategies. Gene 2014; 538:217-27. [DOI: 10.1016/j.gene.2013.12.019] [Citation(s) in RCA: 175] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Revised: 11/27/2013] [Accepted: 12/11/2013] [Indexed: 12/27/2022]
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16
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Misra SK, Naz S, Kondaiah P, Bhattacharya S. A cationic cholesterol based nanocarrier for the delivery of p53-EGFP-C3 plasmid to cancer cells. Biomaterials 2014; 35:1334-46. [DOI: 10.1016/j.biomaterials.2013.10.062] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2013] [Accepted: 10/20/2013] [Indexed: 01/10/2023]
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17
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Gooding M, Browne LP, Quinteiro FM, Selwood DL. siRNA delivery: from lipids to cell-penetrating peptides and their mimics. Chem Biol Drug Des 2013; 80:787-809. [PMID: 22974319 DOI: 10.1111/cbdd.12052] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
To deliver siRNA for therapeutic use, several hurdles must be addressed. Metabolic degradation must be blocked, and the RNAi cellular machinery is located in the cytoplasm, while double-stranded siRNA is large, highly charged and impermeable to cell membranes. To date, the solutions to the delivery issues have mostly involved different forms of lipid particle encapsulation. Cell-penetrating peptides and their mimics or analogues offer a different approach and this is an emerging field with the first in vivo examples now reported. Recent reports point to lipid receptors being involved in the cellular uptake of both types of transporter. This review examines the delivery of siRNA with a focus on cell-penetrating peptides and their small molecule and oligomeric mimics. The current status of siRNA delivery methods in clinical trials is examined. It now seems that the goal of delivering siRNA therapeutically is achievable but will they form part of a sustainable healthcare portfolio for the future.
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Affiliation(s)
- Matt Gooding
- The Wolfson Institute for Biomedical Research, UCL, Gower Street, London WC1E 6BT, UK
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18
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Development of a nanoparticle-based influenza vaccine using the PRINT technology. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2012. [PMID: 23178283 DOI: 10.1016/j.nano.2012.11.001] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
UNLABELLED Historically it is known that presentation of vaccine antigens in particulate form, for a wide range of pathogens, has clear advantages over the presentation of soluble antigen alone [J.C. Aguilar, E.G. Rodriguez, Vaccine adjuvants revisited. Vaccine 25 (2007) 3752-3762, M. Singh, D. O'Hagan, Advances in vaccine adjuvants. Nature Biotechnology 17 (1999) 1075-1081]. Herein we describe a novel particle-based approach, which independently controls size, shape, and composition to control the delivery and presentation of vaccine antigen to the immune system. Highly uniform particles were produced using a particle molding technology called PRINT (Particle Replication in Non-wetting Templates) which is an off-shoot of imprint lithography [J Am Chem Soc 127 (2005) 10096-10100, J Am Chem Soc 126 (2004) 2322-2323, Chem Soc Rev 35 (2006) 1095-1104, J Am Chem Soc 130 (2008) 5008-5009, J Am Chem Soc 130 (2008) 5438-5439, Polymer Reviews 47 (2007) 321-327, Acc Chem Res 41 (2008) 1685-1695, Acc Chem Res 44 (10) (2011) 990-998]. Cylindrical (diameter [d]=80 nm, height [h]=320 nm) poly (lactide-co-glycolide) (PLGA) based PRINT particles were designed to electrostatically bind commercial trivalent injectable influenza vaccine. In a variety of blended PLGA formulations, these particles were safe and showed enhanced responses to influenza hemagglutinin in murine models. FROM THE CLINICAL EDITOR Shape is one of the determining factors in interactions of nanoparticles with their biologic environment. PRINT technology is able to fabricate nearly uniform nanoparticles and this technology is tested here in murine models to effectively deliver influenza vaccine.
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19
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Finocchiaro LME, Glikin GC. Cytokine-enhanced vaccine and suicide gene therapy as surgery adjuvant treatments for spontaneous canine melanoma: 9 years of follow-up. Cancer Gene Ther 2012; 19:852-61. [PMID: 23059870 DOI: 10.1038/cgt.2012.72] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
We present here the updated results after 9 years of the beginning of a trial on canine patients with malignant melanoma. This surgery adjuvant approach combined local suicide gene therapy with a subcutaneous vaccine composed by tumor cells extracts and xenogeneic cells producing human interleukin-2 and granulocyte-macrophage colony-stimulating factor. Toxicity was absent or minimal in all patients (0≤VCOG-CTCAE grade≤1). With respect to surgery-treated controls (ST), the complete surgery (CS) arm of this combined treatment (CT) significantly increased the fraction of local disease-free patients from 13 to 81% and distant metastases free from 32 to 84%. Even though less effective than the CS arm, the partial surgery (PS) arm of this CT was significantly better controlling the disease than only surgery (14% while PS-ST: 0%, P<0.01 and CS-ST: 5%, P<0.05). In addition, CT produced a significant sevenfold (CS) and threefold (PS) increase in overall survival. The CS-CT arm significantly improved both CS-ST metastasis-free- and melanoma overall survival from 99 days (respective ranges: 11-563 and 10-568) to >2848 days (81-2848 and 35-2848). Thus, more of 50% of our CT patients died of melanoma unrelated causes, transforming a lethal disease into a chronic one. Finally, surgery adjuvant CT delayed or prevented post-surgical recurrence and distant metastasis, significantly improved disease-free and overall survival maintaining the quality of life. Long-term safety and efficacy of this treatment are supported by the high number of CT patients (283) and extensive follow-up (>9 years). The successful clinical outcome encourages the further translation of similar approaches to human gene therapy trials.
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Affiliation(s)
- L M E Finocchiaro
- Unidad de Transferencia Genética, Instituto de Oncología Ángel H. Roffo, Universidad de Buenos Aires, Buenos Aires, Argentina
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20
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Mechanisms of action underlying the immunotherapeutic activity of Allovectin in advanced melanoma. Cancer Gene Ther 2012; 19:811-7. [PMID: 23037806 PMCID: PMC3499708 DOI: 10.1038/cgt.2012.69] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Allovectin (velimogene aliplasmid) is a cancer immunotherapeutic currently completing a pivotal phase 3 study for metastatic melanoma. Consisting of a bicistronic plasmid encoding both major histocompatibility complex (MHC) class I heavy and light chains (HLA-B7 and β2-microglobulin, respectively) formulated with a cationic lipid-based system, it is designed for direct intratumoral administration. Following injection into a single lesion, the product is intended to induce anti-tumor immune responses against both treated and distal lesions. Both the plasmid and lipid components of Allovectin contribute to the biological activity of the drug product, and its therapeutic activity is hypothesized to derive from multiple mechanisms of actions (MOAs). These include the induction of both cytotoxic T-cell and innate immune responses directed against allogeneic as well as tumor-derived targets, consequences of both an increased MHC class I expression on tumor cells and the induction of a localized immune/inflammatory response. In this paper, we review Allovectin's proposed MOAs, placing their contributions in the context of anti-tumor immunity and highlighting both preclinical and clinical supporting data.
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21
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Lee JH, Lee MJ. Liposome-Mediated Cancer Gene Therapy: Clinical Trials and their Lessons to Stem Cell Therapy. B KOREAN CHEM SOC 2012. [DOI: 10.5012/bkcs.2012.33.2.433] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Abstract
IMPORTANCE OF THE FIELD Nucleic acids such as plasmid DNA, antisense oligonucleotide, and RNA interference (RNAi) molecules, have a great potential to be used as therapeutics for the treatment of various genetic and acquired diseases. To design a successful nucleic acid delivery system, the pharmacological effect of nucleic acids, the physiological condition of the subjects or sites, and the physicochemical properties of nucleic acid and carriers have to be thoroughly examined. AREAS COVERED IN THIS REVIEW The commonly used lipids, polymers and corresponding delivery systems are reviewed in terms of their characteristics, applications, advantages and limitations. WHAT THE READER WILL GAIN This article aims to provide an overview of biological barriers and strategies to overcome these barriers by properly designing effective synthetic carriers for nucleic acid delivery. TAKE HOME MESSAGE A thorough understanding of biological barriers and the structure-activity relationship of lipid and polymeric carriers is the key for effective nucleic acid therapy.
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Affiliation(s)
- Lin Zhu
- Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, 19 South Manassas St, Cancer Research Building RM 226, Memphis, TN 38103, USA
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23
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24
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Zhu L, Lu Y, Miller DD, Mahato RI. Structural and formulation factors influencing pyridinium lipid-based gene transfer. Bioconjug Chem 2009; 19:2499-512. [PMID: 19053309 DOI: 10.1021/bc8004039] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of pyridinium lipids containing a heterocyclic ring and a nitrogen atom were synthesized to determine the structure-activity relationship for gene delivery. Pyrylium chloroaluminate was synthesized by monoacylation of mesityl oxide and converted into pyrylium hexafluorophosphate, which was used as the key intermediate for reaction with different primary amines, to yield hydroxyethylpyridinium hexafluorophosphate and aminoethylpyridinium hexafluorophosphate. Acylation of these pyridinium salts with different types of fatty acid chlorides afforded the final pyridinium lipids, which were mixed with a co-lipid, such as L-alpha-dioleoylphosphatidylethanolamine (DOPE) and cholesterol (Chol) to prepare cationic liposomes by sonication. These liposomes were mixed with plasmid DNA encoding enhanced green fluorescent protein (pCMS-EGFP) or luciferase (pcDNA3-Luc) and transfected into Chinese hamster ovary (CHO) cells. Several factors including hydrophobic anchor chain length, anchor chain type, configuration of double bond, linker type, co-lipid type, cationic lipid/co-lipid molar ratio, charge ratio (N/P), and cell type had significant influence on transfection efficiency and cytotoxicity. Pyridinium lipids with amide linker showed significantly higher transfection efficiency compared to their ester counterparts. Liposomes prepared at a 1:1 molar ratio of pyridinium lipid and co-lipid showed higher transfection efficiency when either DOPE or cholesterol was used as a co-lipid to prepare cationic liposomes for complex formation with plasmid DNA at 3:1(+/-) charge ratio. Pyridinium liposomes based on a hydrophobic anchor chain length of 16 showed higher transfection efficiency and lower cytotoxicity. The pyridinium lipid with a trans-configuration of the double bond in the fatty acid chain showed higher transfection efficiency than its counterpart with cis-configuration at the same fatty acid chain length. In the presence of serum, C16:0 and Lipofectamine significantly decreased their transfection efficiencies, which were completely lost at a serum concentration of 30% and higher, while C16:1 trans-isomer still had high transfection efficiency under these conditions. In conclusion, pyridinium lipids showed high transfection efficiency and have the potential to be used as transfection reagents in vitro and in vivo.
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Affiliation(s)
- Lin Zhu
- University of Tennessee Health Science Center, Memphis, Tennessee 38103-3308, USA
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25
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Reszka R, Zhu JH, Weber F, Walther W, Greferath R, Dyballa S. Liposome Mediated Transfer of Marker and Cytokine Genes Into Rat and Human Glioblastoma Cells in Vitro and in Vivo. J Liposome Res 2008. [DOI: 10.3109/08982109509039915] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Tari AM, Stephens C, Rosenblum M, Lopez-Berestein G. Pharmacokinetics, Tissue Distribution, and Safety of P-Ethoxy Oligonucleotides Incorporated in Liposomes. J Liposome Res 2008. [DOI: 10.3109/08982109809035530] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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27
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Dass CR, Walker TL, Decruz EE, Burton MA. Cationic Liposomes and Gene Therapy for Solid Tumors. Drug Deliv 2008. [DOI: 10.3109/10717549709051887] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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28
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Suicide gene and cytokines combined nonviral gene therapy for spontaneous canine melanoma. Cancer Gene Ther 2008; 15:165-72. [PMID: 18219342 DOI: 10.1038/sj.cgt.7701096] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Canine spontaneous melanoma is a highly aggressive tumor resistant to current therapies. We evaluated the safety, efficacy and antitumor effects of direct intratumor injections of lipoplexes encoding herpes simplex thymidine kinase coadministrated with ganciclovir, and irradiated transgenic xenogeneic cells secreting 20-30 mug day(-1) of human granulocyte-macrophage colony-stimulating factor and interleukin-2. Toxicity was minimal or absent in all patients. This combined treatment (CT) induced tumor regression and a pronounced immune cell infiltration. The objective responses (47%: 21/45) averaged 80% of tumor mass loss. Local CT also induced systemic antitumor response evidenced by complete remission of one pulmonary metastasis and by the significantly higher percentage of metastasis-free patients (76: 34/45)) until the study ending compared to untreated (UC: 29%, 5/17), surgery-treated (CX: 48%, 11/23) or suicide gene-treated controls (SG: 56%, 9/16) (Fisher's exact test). CT significantly improved median survival time: 160 (57-509) days compared to UC (69 (10-169)), CX (82 (43-216)) or SG (94 (46-159)). CT also increased (P<0.00001, Kaplan-Meier analysis) metastasis-free survival: >509 (57-509) days with respect to UC: 41 (10-169), CX: 133 (43-216) and SG: >159 (41-159). Therefore, CT controlled tumor growth by delaying or preventing distant metastasis, thereby significantly extending survival and recovering the quality of life.
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29
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Finocchiaro LME, Glikin GC. Cytokine-enhanced vaccine and suicide gene therapy as surgery adjuvant treatments for spontaneous canine melanoma. Gene Ther 2007; 15:267-76. [DOI: 10.1038/sj.gt.3303072] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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30
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Konstantinova ID, Serebrennikova GA. Positively charged lipids: structure, methods of synthesis and applications. RUSSIAN CHEMICAL REVIEWS 2007. [DOI: 10.1070/rc1996v065n06abeh000304] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Vilalta A, Jimenez G, Rusalov D, Planchon R, Lalor P, Carner K, Chaplin JA, Komai M, Manthorpe M, Kaslow DC, Rolland A. Vaccination with Polymerase Chain Reaction-Generated Linear Expression Cassettes Protects Mice Against Lethal Influenza A Challenge. Hum Gene Ther 2007; 18:763-71. [PMID: 17705698 DOI: 10.1089/hum.2007.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The feasibility of a linear expression cassette (LEC)-based influenza A DNA vaccine was demonstrated in mice, using a lethal dose (LD90) of a mouse-adapted A/Hong Kong/8/68 (H3N2) influenza strain. LECs expressing hemagglutinin (HA) from either the homotypic H3N2 or the heterotypic H1N1 (A/Puerto Rico/8/34) influenza virus were produced by polymerase chain reaction and either phosphodiester- or phosphorothioate-modified oligonucleotide primers. Survival subsequent to lethal viral challenge was used as a primary end point; weight loss was the secondary end point. Survival and weight loss data showed that protection can be achieved in mice with 50 microg of phosphate-buffered saline-formulated LEC DNA or 2 microg of Vaxfectin-formulated LEC DNA. Survival correlated with neutralizing antibody titers (hemagglutination inhibition, HAI); titers obtained after vaccination with LEC were equivalent to those obtained with HA (H3N2) plasmid DNA control. Vaccination with heterotypic H1 HA-LEC DNA provided no protection against viral challenge.
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32
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Gene Therapy. CARDIOVASCULAR MEDICINE 2007. [DOI: 10.1007/978-1-84628-715-2_133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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33
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Gruneich JA, Diamond SL. Synthesis and structure-activity relationships of a series of increasingly hydrophobic cationic steroid lipofection reagents. J Gene Med 2007; 9:381-91. [PMID: 17366520 DOI: 10.1002/jgm.1024] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The use of cholesterol-based cationic lipids and the ability of glucocorticoids to reduce local inflammatory response to lipoplexes motivated an investigation of structure-activity relationships for cationic steroids. A one-step synthetic scheme using iminothiolane was developed to link spermine to the 21-OH position of steroids via an amidine linkage. Five steroids (cortisol, dexamethasone, corticosterone, 11-deoxycortisol, and 11-deoxycorticosterone) with increasing hydrophobicity of the parent steroid (Log P(ster) from 1.51 to 3.01) were conjugated with spermine, formulated with dioleoylphosphatidylethanolamine (DOPE) at DOPE : steroid mole ratios (R) of R = 0.5 to 2, and then complexed with 1 microg enhanced green fluorescent protein (EGFP) plasmid DNA at charge ratios (CR) = 2 to 24 amines per phosphate (0.5 to 6 steroids per phosphate). The resulting 105 different formulations of the cationic steroid series were used to lipofect bovine aortic endothelial cells. Transgene expression data at either 24 or 48 h post-lipofection for all formulations was collapsed onto master curves when plotted against a single empirical dimensionless parameter, the lipofection index (LI) = CR (Log P(liposome))(Log P(ster)/|DeltaLog P|) [R/(R + 1)] where DeltaLog P = Log P(DOPE)- Log P(ster) and Log P(liposome) is a mole-weighted average of the DOPE/cationic steroid liposome hydrophobicity. For 7 < LI < 29, the EGFP expression at 24 or 48 h post-lipofection increased linearly with LI (EGFP approximately 0 for LI < 7), but did not increase further for LI > 29, thus providing a predictive design rule based on Log P of the hydrophobic moiety of the cationic steroid lipid.
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Affiliation(s)
- Jeffrey A Gruneich
- Department of Bioengineering, Institute for Medicine and Engineering, 1024 Vagelos Research Laboratory, University of Pennsylvania, Philadelphia, PA 19104, USA
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Kasireddy K, Ali SM, Ahmad MU, Choudhury S, Chien PY, Sheikh S, Ahmad I. Synthesis of cationic cardiolipin analogues. Bioorg Chem 2006; 33:345-62. [PMID: 16157362 DOI: 10.1016/j.bioorg.2005.06.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2005] [Revised: 06/07/2005] [Accepted: 06/16/2005] [Indexed: 11/25/2022]
Abstract
An approach was developed to synthesize a new class of cationic cardiolipin analogues containing two quaternary ammonium groups with tetra alkyl groups retaining "glycerol" moiety, the central core of the molecule. Cationic cardiolipin analogues were modified via introduction of either two or four oxyethylene groups to enhance the solubility in polar solvents. These newly synthesized cationic cardiolipin analogues can be applied to a broad range of drug delivery systems such as transfection reagents.
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Affiliation(s)
- Krishnudu Kasireddy
- Research and Development Facility, NeoPharm, Inc., 1850 Lakeside Drive, Waukegan, IL 60085, USA
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Margalith M, Vilalta A. Sustained protective rabies neutralizing antibody titers after administration of cationic lipid-formulated pDNA vaccine. GENETIC VACCINES AND THERAPY 2006; 4:2. [PMID: 16480501 PMCID: PMC1431525 DOI: 10.1186/1479-0556-4-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2006] [Accepted: 02/15/2006] [Indexed: 11/21/2022]
Abstract
Published data indicate that formulation of pDNA with cationic lipids could greatly enhance the response to a pDNA vaccine in larger mammals. The present work tested the influence of several pDNA:cationic lipid formulations on rabies neutralizing titers. Plasmid expressing Rabies G protein (CVS strain) was evaluated in vivo for ability to elicit neutralizing titers. pDNA:DMRIE-DOPE formulated at two DNA:cationic lipid molar ratios was compared in mice to a Vaxfectin™-pDNA formulation. Mouse data indicate that Vaxfectin™ is more effective than DMRIE-DOPE in eliciting neutralizing titers. In addition, the ratio of pDNA to DMRIE-DOPE can also affect neutralizing titers. Our data show that sustained neutralizing titers (120 days) can be obtained after a single administration of DMRIE-DOPE-formulated pDNA in rabbits.
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Affiliation(s)
- Michal Margalith
- Vical Incorporated, 10390 Pacific Center Ct, San Diego, CA 92121, USA
| | - Adrián Vilalta
- Vical Incorporated, 10390 Pacific Center Ct, San Diego, CA 92121, USA
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Han TK, Dao ML. Differential immunogenicity of a DNA vaccine containing the Streptococcus mutans wall-associated protein A gene versus that containing a truncated derivative antigen A lacking in the hydrophobic carboxyterminal region. DNA Cell Biol 2006; 24:574-81. [PMID: 16153158 DOI: 10.1089/dna.2005.24.574] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Two plasmid DNA constructs were obtained by cloning separately into the eukaryotic expression vector pcDNA3.1/V5-His-TOPO the wall-associated protein A (wapA) gene of Streptococcus mutans GS-5 or its truncated derivative antigen A (agA) gene encoding a known candidate antigen for dental caries vaccine. The immunogenicity of the two constructs, designated pcDNA-wapA and pcDNA-agA, was compared by intranasal immunization of two groups of mice using the cationic DMRIE-C (1,2-dimyristyloxypropyl-3-dimethylhydroxy ethyl ammonium bromide-cholesterol) as an adjuvant. Immunization with pcDNA-wapA or pcDNA- agA resulted in specific salivary IgA and systemic IgG antibodies to the target antigens after two doses given at 3-week intervals. Higher salivary IgA level was observed in the mice immunized with the pcDNA-wapA vaccine compared to those immunized with the pcDNA-agA vaccine. Furthermore, anti-WapA antibody inhibited S. mutans sucrose-dependent adherence suggesting a potential protection against S. mutans colonization of the tooth, while anti-AgA had no significant effect. Indeed, prediction and analysis of protein epitopes showed that WapA contains highly promiscuous MHC-II binding motifs in addition to those found in AgA. Immunodot assay confirmed that WapA bound biotin-labeled dextran, whereas AgA did not. These data indicated that full-length WapA is a better candidate vaccine antigen than the soluble AgA, which is truncated in the hydrophobic membrane and wall-spanning region.
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Affiliation(s)
- Thomas K Han
- Department of Biology, University of South Florida, Tampa, 33620, USA
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Vilalta A, Mahajan RK, Hartikka J, Leamy V, Martin T, Rusalov D, Bozoukova V, Lalor P, Hall K, Kaslow DC, Rolland A. II. Cationic Lipid-Formulated Plasmid DNA-Based Bacillus anthracis Vaccine: Evaluation of Plasmid DNA Persistence and Integration Potential. Hum Gene Ther 2005; 16:1151-6. [PMID: 16218776 DOI: 10.1089/hum.2005.16.1151] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Several formulated plasmid DNA (pDNA)-based vaccines are being evaluated for safety and efficacy in healthy human subjects. A safety concern for any vaccine that contains genetic material, be it whole organism, live-attenuated, or gene-based, is the potential for integration into genomic DNA (gDNA). To address this concern, a preclinical pDNA persistence/integration study was conducted in rabbits to determine the level of pDNA in muscle 2, 28, and 64 days after intramuscular injection of DMRIE:DOPE-formulated pDNAs encoding Bacillus anthracis detoxified LF and PA proteins (VCL-AB01 vaccine). Total DNA was extracted from day 64 muscle tissue and fractionated by column agarose gel electrophoresis (CAGE). Plasmid copy number (PCN) in muscle 64 days after injection (geometric mean, 2808 PCN/microg of total DNA or 150,000 diploid genomes) was determined by quantitative polymerase chain reaction. Analysis of total DNA from five VCLAB01- injected rabbits revealed that two of five samples had no detectable PCN in the high molecular weight fraction after one round of CAGE, two samples had PCN under the lower limit of quantitation, and the remaining sample had 123 PCN/microg. All PCN in the latter sample cleared after an additional round of CAGE. It appears, therefore, that persisting PCN fractionate as low molecular weight material and are most likely not integrated into gDNA. Even if the worst-case assumption is made that the highest PCN found associated with gDNA represented covalently integrated pDNA inserts, the frequency of mutation would still be 500-fold lower than the autosomal spontaneous mutation rate.
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Vilalta A, Mahajan RK, Hartikka J, Leamy V, Martin T, Rusalov D, Bozoukova V, Lalor P, Hall K, Kaslow DC, Rolland A. II. Cationic Lipid-Formulated Plasmid DNA-Based Bacillus anthracis Vaccine: Evaluation of Plasmid DNA Persistence and Integration Potential. Hum Gene Ther 2005. [DOI: 10.1089/hum.2005.16.ft-124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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39
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Vilalta A, Mahajan RK, Hartikka J, Leamy V, Martin T, Rusalov D, Bozoukova V, Lalor P, Hall K, Kaslow DC, Rolland A. II. Cationic Lipid-Formulated Plasmid DNA-Based Bacillus anthracis Vaccine: Evaluation of Plasmid DNA Persistence and Integration Potential. Hum Gene Ther 2005. [DOI: 10.1089/hum.2005.16.ft-117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Burns MR, Wood SJ, Miller KA, Nguyen T, Cromer JR, David SA. Lysine-spermine conjugates: hydrophobic polyamine amides as potent lipopolysaccharide sequestrants. Bioorg Med Chem 2005; 13:2523-36. [PMID: 15755654 DOI: 10.1016/j.bmc.2005.01.038] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2004] [Revised: 01/21/2005] [Accepted: 01/21/2005] [Indexed: 11/26/2022]
Abstract
Lipopolysaccharides (LPS), otherwise termed 'endotoxins', are outer-membrane constituents of Gram-negative bacteria. Lipopolysaccharides play a key role in the pathogenesis of 'Septic Shock', a major cause of mortality in the critically ill patient. Therapeutic options aimed at limiting downstream systemic inflammatory processes by targeting lipopolysaccharide do not exist at the present time. We have defined the pharmacophore necessary for small molecules to specifically bind and neutralize LPS and, using animal models of sepsis, have shown that the sequestration of circulatory LPS by small molecules is a therapeutically viable strategy. In this paper, the interactions of a focused library of lysine-spermine conjugates with lipopolysaccharide (LPS) have been characterized. Lysine-spermine conjugates with the epsilon-amino terminus of the lysinyl moiety derivatized with long-chain aliphatic hydrophobic substituents in acyl or alkyl linkage bind and neutralize bacterial lipopolysaccharides, and may be of use in the prevention or treatment of endotoxic shock states.
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Affiliation(s)
- Mark R Burns
- MediQuest, Inc., 4101 Stone Way North, Suite 220, Seattle, WA 98103, USA
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Affiliation(s)
- G J Nabel
- Vaccine Research Center, NIAID, NIH, 40 Convent Drive, Bethesda, MD 20892-3005, USA.
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Abstract
This article provides a review of the application of gene transfer technology to studies of salivary glands. Salivary glands provide an uncommon target site for gene transfer but offer many experimental situations likely of interest to the cell biologist. The reader is provided with a concise overview of salivary biology, along with a general discussion of the strategies available for gene transfer to any tissue. In particular, adenoviral vectors have been useful for proof of concept studies with salivary glands. Several examples are given, using adenoviral-mediated gene transfer, for addressing both biological and clinical questions. Additionally, benefits and shortcomings affecting the utility of this technology are discussed.
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Affiliation(s)
- Bruce J Baum
- Gene Therapy and Therapeutics Branch, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland 20892, USA
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Dass CR. Biochemical and biophysical characteristics of lipoplexes pertinent to solid tumour gene therapy. Int J Pharm 2002; 241:1-25. [PMID: 12086717 DOI: 10.1016/s0378-5173(02)00194-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Cationic liposomes have become the reagent of choice for transfer of nucleic acids such as plasmids and oligodeoxynucleotides to cells in culture and in vivo. Whilst these reagents have several advantages over other forms of nucleic acid transfer methods, toxicity remains a significant problem, especially in vivo. Recent studies have also highlighted the immunostimulatory nature of these cationic vesicles when complexed to plasmid DNA, a phenomenon that may be harnessed for efficacious usage against tumours. Current research in this dynamic technological field is aimed at the development of cationic lipids that have negligible toxic effects and enhanced transfection capabilities.
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Affiliation(s)
- Crispin R Dass
- Johnson & Johnson Research, 1 Central Avenue, Australian Technology Park, 1430, Eveleigh, Australia.
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Ohmiya N, Emi N, Niwa Y, Goto H, Hayakawa T. Insulin-enhanced liposome-mediated gene transfer into a gastric carcinoma cell line. Clin Exp Pharmacol Physiol 2002; 29:544-8. [PMID: 12060095 DOI: 10.1046/j.1440-1681.2002.03696.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
1. Liposome-mediated transfection is useful due to no DNA constraints, lower immunogenicity and easy preparation. However, it has the disadvantage of low transfection efficiency. We aimed to test whether lipofection efficiency could be enhanced in gastrointestinal cell lines by the growth-promoting effect of insulin. 2. To assess the effect of insulin on lipofection efficiency and the cell cycle, expression of green fluorescent protein (GFP) and DNA distribution in gastric (MKN1), colonic (HT29) and pancreatic (BxPC3) carcinoma cell lines was analysed using flow cytometry. 3. The percentage of positive cells with GFP was significantly higher in MKN1 cells in culture medium with 5 mg/mL insulin than without insulin, whereas the percentage was the same in HT29 and BxPC3 cells with insulin as without insulin. The percentage of S phase fraction MKN1 cells with insulin was greater than without insulin, whereas the percentage of S phase fractions of HT29 and BxPC3 cells was the same with or without insulin. Lipofection efficiency correlated with the percentage of S phase fraction. 4. Insulin has the potential to enhance efficiency of lipofection into a sensitive cell line by increasing cellular proliferation.
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Affiliation(s)
- Naoki Ohmiya
- Second Department of Internal Medicine and First Department of Internal Medicine, Nagoya University School of Medicine, Nagoya, Japan.
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Zeng Q, Kanter PM, Dhir R, Gooding WE, Huang L, Grandis JR. Lack of toxicity of EGFR antisense gene therapy. JOURNAL OF EXPERIMENTAL THERAPEUTICS AND ONCOLOGY 2002; 2:174-86. [PMID: 12415634 DOI: 10.1046/j.1359-4117.2002.01033.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
PURPOSE EGFR is overexpressed in many human cancer cells, including head and neck squamous cell carcinoma (HNSCC). We have previously shown that elevated EGFR levels in the primary HNSCC tumor are associated with decreased survival. Reduction of EGFR tumor expression levels using an antisense EGFR sequence under the control of the U6 small nuclear RNA promoter abrogates tumor growth in a head and neck xenograft model. In support of a phase I clinical trial of an EGFR antisense gene-liposome complex administered to HNSCC patients, we conducted a series of studies to evaluate the safety of intralesional injections of EGFR liposomal antisense gene therapy in normal mice. METHODS Three dose tiers were examined including the starting DNA-lipid dose for the clinical trial. RESULTS Tissues and blood were harvested from mice treated with the liposome-mediated gene therapy and control mice at several time points for analysis. In this dosing range, administration of the antisense EGFR DNA-liposome complex had no apparent adverse effect on renal, hepatic and hematologic parameters studied. No major organ pathologic changes were observed. CONCLUSIONS These results suggest that the toxicity of intralesional EGFR antisense DNA plus liposomes is restricted to a self-limited inflammation at the injection site, and may be well-tolerated in the clinical setting. EGFR antisense gene therapy was reviewed by the Recombinant DNA Advisory Committee and the Food and Drug Administration, and a phase I clinical trial is currently underway in patients with advanced HNSCC.
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Affiliation(s)
- Qing Zeng
- Department of Otolaryngology, University of Pittsburgh, PA, USA
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Seki M, Iwakawa J, Cheng H, Cheng PW. p53 and PTEN/MMAC1/TEP1 gene therapy of human prostate PC-3 carcinoma xenograft, using transferrin-facilitated lipofection gene delivery strategy. Hum Gene Ther 2002; 13:761-73. [PMID: 11936974 DOI: 10.1089/104303402317322311] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
We previously reported that supplementation of a cationic liposome with transferrin (Tf) greatly enhanced lipofection efficiency (P.-W. Cheng, Hum. Gene Ther. 1996;7:275-282). In this study, we examined the efficacy of p53 and PTEN tumor suppressor gene therapy in a mouse xenograft model of human prostate PC-3 carcinoma cells, using a vector consisting of dimyristoyloxypropyl-3-dimethylhydroxyethyl ammonium bromide (DMRIE)-cholesterol (DC) and Tf. When the volume of the tumors grown subcutaneously in athymic nude mice reached 50-60 mm(3), three intratumoral injections of the following four formulations were performed during week 1 and then during week 3: (1) saline, (2) DC + Tf + pCMVlacZ, (3) DC + Tf + pCMVPTEN, and (4) DC + Tf + pCMVp53 (standard formulation). There was no significant difference in tumor volume and survival between group 1 and group 2 animals. As compared with group 1 controls, group 3 animals had slower tumor growth during the first 3 weeks but thereafter their tumor growth rate was similar to that of the controls. By day 2 posttreatment, group 4 animals had significantly lower tumor volume relative to initial tumor volume as well as controls at the comparable time point. Also, animals treated with p53 survived longer. Treatment with DC, Tf, pCMVp53, DC + pCMVp53, or Tf + pCMVp53 had no effect on tumor volume or survival. Expression of p53 protein and apoptosis were detected in tumors treated with the standard formulation, thus associating p53 protein expression and apoptosis with efficacy. However, p53 protein was expressed in only a fraction of the tumor cells, suggesting a role for bystander effects in the efficacy of p53 gene therapy. We conclude that intratumoral gene delivery by a nonviral vector consisting of a cationic liposome and Tf can achieve efficacious p53 gene therapy of prostate cancer.
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Affiliation(s)
- Masafumi Seki
- Department of Biochemistry and Molecular Biology, College of Medicine, University of Nebraska Medical Center, 984525 Nebraska Medical Center, Omaha, NE 68198, USA
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Enzmann V, Hollborn M, Poschinger K, Wiedemann P, Kohen L. Immunosuppression by IL-10-transfected human retinal pigment epithelial cells in vitro. Curr Eye Res 2001; 23:98-105. [PMID: 11840347 DOI: 10.1076/ceyr.23.2.98.5474] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
PURPOSE Retinal pigment epithelium (RPE) transplantation seems to be a possible therapy for restoring vision in the case of retinal degeneration. As there is a risk of allergic rejection, a gene-transfer of immunosuppressive cytokines into the graft may diminish this reaction. Therefore, we investigated the transfer of interleukin-10 (IL-10) into an immortalised human RPE cell line (hTERT-RPE1) and its effect on the proliferation of allogeneic immune competent cells. METHODS The hTERT-RPE1 cells were transiently transfected with the cDNA of human IL-10 using a lipid-based transfection reagent. The expression of IL-10 mRNA was ana-lysed by reverse transcription-polymerase chain reaction and an enzyme-linked immunosorbent assay measured the secretion of the cytokine over 7 days. The effect of the secreted IL-10 on the proliferation of allogeneic T cells with and without homologous macrophages was investigated colorimetrically. To enhance this reaction, RPE cells were pre-activated with interferon-gamma (IFN-gamma). Anti-IL-10 antibodies were used in a neutralising assay. RESULTS A transfection efficiency of 23.3 +/- 9.03% was achieved. IL-10 mRNA could only be shown in IL-10-transfected hTERT-RPE1 cells. The same was found for the level of cytokine, with a maximum on day 3 (10.34 +/- 0.09 ng/ml). A significant suppressive effect of the secreted IL-10 on T-cell proliferation was detectable on days 5 and 6. This effect could be significantly abolished with anti-IL-10 antibodies. CONCLUSIONS The IL-10-producing hTERT-RPE1 cells had an immunosuppressive action on T-cell proliferation in vitro. A gene-transfer into RPE allografts before transplantation may be able to promote graft survival.
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Affiliation(s)
- V Enzmann
- Department of Ophthalmology, Faculty of Medicine, University of Leipzig, Germany
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Musacchio A, Quintana D, Herrera AM, Sandez B, Alvarez JC, Falcón V, la Rosa MC, Alvarez F, Pichardo D. Plasmid DNA-recombinant Opc protein complexes for nasal DNA immunization. Vaccine 2001; 19:3692-9. [PMID: 11395203 DOI: 10.1016/s0264-410x(01)00076-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The nasal mucosa may provide a simple, non-invasive route to deliver DNA encoding genes that stimulate a specific immune response. Based on this, a new approach using pCMVbeta-gal plasmid DNA complexed to the Opc meningococcal outer membrane protein was assayed for. Optimal conditions of interaction were established between recombinant Opc protein and pCMVbeta-gal plasmid DNA. Complexes were fully characterized by electrophoresis analysis, DNAse resistance assay and transmission electron microscopy. DNA-protein complexes were also evaluated in in vitro transfection experiments. After the characterisation of complexes, Balb/c mice were intranasal (i.n.) and intramuscularly (i.m.) immunized. The humoral immune response against beta-galactosidase was measured by ELISA. The proliferative response in the spleen lymph nodes was also measured. Complexes administered by i.n. route induced both systemic and mucosal antibody responses. This behavior was not observed with the naked DNA. Finally, a lymphoproliferative response specific to beta-galactosidase induced by DNA-protein complexes was also detected.
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Affiliation(s)
- A Musacchio
- Division of Vaccines, Center for Genetic Engineering and Biotechnology, P.O. Box 6162, C.P. 10600, C. Habana, Cuba.
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Gao H, Hui KM. Synthesis of a novel series of cationic lipids that can act as efficient gene delivery vehicles through systematic heterocyclic substitution of cholesterol derivatives. Gene Ther 2001; 8:855-63. [PMID: 11423933 DOI: 10.1038/sj.gt.3301471] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2000] [Accepted: 03/09/2001] [Indexed: 11/09/2022]
Abstract
The synthesis of a series of novel cationic lipids through the systematic substitution of cholesterol derivatives that could greatly enhance the delivery and expression of plasmid DNA in vitro and in vivo is described. Two of the newly synthesized lipids, designated as NCC4 and NCC10, were chosen to be studied in detail and gave much higher levels of gene expression than that which could be obtained with some of the conventional cationic polymers and cationic liposomes. In vivo studies with both NCC4 and NCC10 also showed better ability in delivering the reporter gene to the target cells through intrasplenic injection. In addition, by varying the DNA/lipid charge ratios, NCC4 and NCC10 can withstand serum inactivation in vitro. However, this does not correlate with the corresponding increase in the level of gene expression following systemic gene delivery with NCC4 and NCC10 in vivo.
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Affiliation(s)
- H Gao
- Gene Vector Laboratory, Division of Cellular and Molecular Research, National Cancer Center, 11 Hospital Drive, Singapore 169610
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