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Liu Y, Wan H, Niu J, Zhao M, Shang W, Li P, Li J, Zhang Y, Wu Z, Zhao Y. 3D printing for constructing biocarriers using sodium alginate/ε-poly-l-lysine ink: Enhancing microbial enrichment for efficient nitrogen removal in wastewater. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 950:175296. [PMID: 39111417 DOI: 10.1016/j.scitotenv.2024.175296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 08/02/2024] [Accepted: 08/03/2024] [Indexed: 08/16/2024]
Abstract
The microbial enrichment of traditional biocarriers is limited due to the inadequate consideration of spatial structure and surface charging characteristics. Here, capitalizing on the ability of 3D printing technology to fabricate high-resolution materials, we further designed a positively charged sodium alginate/ε-poly-l-lysine (SA/ε-PL) printing ink, and the 3D printed biocarriers with ideal pore structure and rich positive charge were constructed to enhance the microbial enrichment. The rheological and mechanical tests confirmed that the developed SA/ε-PL ink could simultaneously satisfy the smooth extrusion for printing process and the maintenance of 3D structure. The utilization of the ε-PL secondary cross-linking strategy reinforced the 3D mechanical structure and imparted the requisite physical properties for its application as a biocarrier. Compared with traditional sponge carriers, 3D printed biocarrier had a faster initial attachment rate and a higher biomass of 14.58 ± 1.18 VS/cm3, and the nitrogen removal efficiency increased by 53.9 %. Besides, due to the superior electrochemical properties and biocompatibility, the 3D printed biocarriers effectively enriched the electroactive denitrifying bacteria genus Trichococcus, thus supporting its excellent denitrification performance. This study provided novel insights into the development of new functional biocarriers in the wastewater treatment, thereby providing scientific guidance for practical engineering.
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Affiliation(s)
- Yinuo Liu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Huilin Wan
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Jiaojiao Niu
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China
| | - Minghao Zhao
- Power China Zhongnan Engineering Corporation Limited, Changsha 410014, China
| | - Wei Shang
- North China Municipal Engineering Design and Research Institute Co., Ltd, Tianjin 300202, China
| | - Pengfeng Li
- North China Municipal Engineering Design and Research Institute Co., Ltd, Tianjin 300202, China
| | - Jiaju Li
- North China Municipal Engineering Design and Research Institute Co., Ltd, Tianjin 300202, China
| | - Yue Zhang
- North China Municipal Engineering Design and Research Institute Co., Ltd, Tianjin 300202, China
| | - Zuodong Wu
- Tianjin Water Engineering Co., Ltd, Tianjin 300222, China
| | - Yingxin Zhao
- School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China.
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2
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Lu B, Lim JM, Yu B, Song S, Neeli P, Sobhani N, K P, Bonam SR, Kurapati R, Zheng J, Chai D. The next-generation DNA vaccine platforms and delivery systems: advances, challenges and prospects. Front Immunol 2024; 15:1332939. [PMID: 38361919 PMCID: PMC10867258 DOI: 10.3389/fimmu.2024.1332939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 01/17/2024] [Indexed: 02/17/2024] Open
Abstract
Vaccines have proven effective in the treatment and prevention of numerous diseases. However, traditional attenuated and inactivated vaccines suffer from certain drawbacks such as complex preparation, limited efficacy, potential risks and others. These limitations restrict their widespread use, especially in the face of an increasingly diverse range of diseases. With the ongoing advancements in genetic engineering vaccines, DNA vaccines have emerged as a highly promising approach in the treatment of both genetic diseases and acquired diseases. While several DNA vaccines have demonstrated substantial success in animal models of diseases, certain challenges need to be addressed before application in human subjects. The primary obstacle lies in the absence of an optimal delivery system, which significantly hampers the immunogenicity of DNA vaccines. We conduct a comprehensive analysis of the current status and limitations of DNA vaccines by focusing on both viral and non-viral DNA delivery systems, as they play crucial roles in the exploration of novel DNA vaccines. We provide an evaluation of their strengths and weaknesses based on our critical assessment. Additionally, the review summarizes the most recent advancements and breakthroughs in pre-clinical and clinical studies, highlighting the need for further clinical trials in this rapidly evolving field.
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Affiliation(s)
- Bowen Lu
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jing Ming Lim
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Boyue Yu
- Department of Environmental Science, Policy, and Management, University of California at Berkeley, Berkeley, CA, United States
| | - Siyuan Song
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, United States
| | - Praveen Neeli
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Navid Sobhani
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Pavithra K
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, India
| | - Srinivasa Reddy Bonam
- Department of Microbiology and Immunology, University of Texas Medical Branch, Galveston, TX, United States
| | - Rajendra Kurapati
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Thiruvananthapuram, India
| | - Junnian Zheng
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
- Center of Clinical Oncology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Dafei Chai
- Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
- Jiangsu Center for the Collaboration and Innovation of Cancer Biotherapy, Cancer Institute, Xuzhou Medical University, Xuzhou, Jiangsu, China
- Department of Medicine, Baylor College of Medicine, Houston, TX, United States
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3
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Li Q, Xu J. Research on the Inhibitory Effect of Doxorubicin-loaded Liposomes Targeting GFAP for Glioma Cells. Anticancer Agents Med Chem 2024; 24:177-184. [PMID: 37936466 DOI: 10.2174/0118715206265311231030102307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 09/12/2023] [Accepted: 10/06/2023] [Indexed: 11/09/2023]
Abstract
BACKGROUND Glioma is the most common and devastating brain tumor. In recent years, doxorubicin (DOX) is one of the drugs used in the treatment of gliomas, but it has side effects and poor clinical outcomes. Therefore, the delivery of drugs to the tumor site by targeted transport is a new approach to tumor treatment. OBJECTIVE This study focuses on the anti-tumor effects of GFAP-modified drug-carrying liposomes loaded with DOX (GFAP-DOX-LPs) on gliomas. METHODS GFAP-DOX-LPs were prepared by solvent evaporation method. After characterization analysis of GFAP-DOX-LPs, the encapsulation efficiency, the drug loading capacity and in vitro release performance were determined. Then, the MTT method was used to investigate the cytotoxicity and proliferative behavior of U251 and U87 cell lines. After that, flow cytometry was used to investigate the effect of the drug administration group on tumor cell apoptosis. Eventually, the anti-tumor activity was tested in vivo. RESULTS The average particle size of GFAP-DOX-LPs was determined to be 116.3 ± 6.2 nm, and the average potential was displayed as 22.8 ± 7.2 mv. Besides, the morphology of the particle indicated a spherical shape. The encapsulation rate and drug loading were calculated and determined, which were 91.84 ± 0.41% and 9.27 ± 0.55%. In an acidic medium, the DOX release rate reached about 87%. GFAP-DOX-LPs could target glioma cells with low cytotoxicity and inhibit glioma cell proliferation with high efficiency, resulting in promoting apoptosis. The anti-tumor effect of GFAP-DOX-LPs was significantly enhanced. At the same time, the number of GFAPpositive cells in tumor tissues was significantly lower after treatment. Therefore, the overall survival time could be significantly prolonged. CONCLUSION The prepared GFAP-DOX-LPs had good targeting and glioma cell inhibition ability. This demonstrated the promising application of the prepared liposomes in tumor targeting, especially in the field of targeted drug delivery for the treatment of brain tumor.
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Affiliation(s)
- Qifeng Li
- Department of Neurosurgery, Hangzhou Children's Hospital, Hangzhou, 310000, China
- Department of Pediatric Neurosurgery, Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jiaming Xu
- Department of Neurosurgery, Hangzhou Children's Hospital, Hangzhou, 310000, China
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4
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Jan Z, Mollazadeh S, Abnous K, Taghdisi SM, Danesh A, Ramezani M, Alibolandi M. Targeted Delivery Platforms for the Treatment of Multiple Sclerosis. Mol Pharm 2022; 19:1952-1976. [PMID: 35501974 DOI: 10.1021/acs.molpharmaceut.1c00892] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Multiple sclerosis (MS) is a neurodegenerative condition of the central nervous system (CNS) that presents with varying levels of disability in patients, displaying the significance of timely and effective management of this complication. Though several treatments have been developed to protect nerves, comprehensive improvement of MS is still considered an essential bottleneck. Therefore, the development of innovative treatment methods for MS is one of the core research areas. In this regard, nanoscale platforms can offer practical and ideal approaches to the diagnosis and treatment of various diseases, especially immunological disorders such as MS, to improve the effectiveness of conventional therapies. It should be noted that there is significant progress in the development of neuroprotective strategies through the implementation of various nanoparticles, monoclonal antibodies, peptides, and aptamers. In this study, we summarize different particle systems as well as targeted therapies, such as antibodies, peptides, nucleic acids, and engineered cells for the treatment of MS, and discuss their potential in the treatment of MS in the preclinical and clinical stages. Future advances in targeted delivery of medical supplies may offer new strategies for complete recovery as well as practical treatment of progressive forms of MS.
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Affiliation(s)
- Zeinab Jan
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Science, 7GJP+VPQ Mashhad, Iran
| | - Samaneh Mollazadeh
- Natural Products and Medicinal Plants Research Center, North Khorasan University of Medical Sciences, F82C+G8V Bojnurd, Iran
| | - Khalil Abnous
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, 7GJP+VPQ Mashhad, Iran
| | - Seyed Mohammad Taghdisi
- Targeted Drug Delivery Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, 7GJP+VPQ Mashhad, Iran
| | - Abolghasem Danesh
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Science, 7GJP+VPQ Mashhad, Iran
| | - Mohammad Ramezani
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, 7GJP+VPQ Mashhad, Iran
| | - Mona Alibolandi
- Pharmaceutical Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, 7GJP+VPQ Mashhad, Iran
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5
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Lei H, Shi J, Yang X, Li J, Zhang H, Zhang L, Liu Z. A Novel Method for Preparing Uniform-Sized PLGA Microspheres and the Application in Anti-tubercular Drug Delivery. J Pharm Innov 2021. [DOI: 10.1007/s12247-020-09462-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Valentin F, Wiegmann H, Tarinski T, Nikolenko H, Traupe H, Liebau E, Dathe M, Oji V. Development of a pathogenesis-based therapy for peeling skin syndrome type 1. Br J Dermatol 2020; 184:1123-1131. [PMID: 32926582 DOI: 10.1111/bjd.19546] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/04/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Peeling skin syndrome type 1 (PSS1) is a rare and severe autosomal recessive form of congenital ichthyosis. Patients are affected by pronounced erythroderma accompanied by pruritus and superficial generalized peeling of the skin. The disease is caused by nonsense mutations or complete deletion of the CDSN gene encoding for corneodesmosin (CDSN). PSS1 severely impairs quality of life and therapeutic approaches are totally unsatisfactory. OBJECTIVES The objective of this study was to develop the first steps towards a specific protein replacement therapy for CDSN deficiency. Using this approach, we aimed to restore the lack of CDSN and improve cell-cell cohesion in the transition area of the stratum granulosum (SG) to the stratum corneum. METHODS Human CDSN was recombinantly expressed in Escherichia coli. A liposome-based carrier system, prepared with a cationic lipopeptide to mediate the transport to the outer membrane of keratinocytes, was developed. This formulation was chosen for CDSN delivery into the skin. The liposomal carrier system was characterized with respect to size, stability and toxicity. Furthermore, the interaction with primary keratinocytes and human epidermal equivalents was investigated. RESULTS The liposomes showed an accumulation at the membranes of keratinocytes. CDSN-deficient epidermal equivalents that were treated with liposomal encapsulated CDSN demonstrated presence of CDSN in the SG. Finally, the penetration assay and histological examinations revealed an improved epidermal integrity for CDSN-deficient epidermal equivalents, if they were treated with liposomal encapsulated CDSN. CONCLUSIONS This study presents the first preclinical in vitro experiments for a future specific protein replacement therapy for patients affected by PSS1.
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Affiliation(s)
- F Valentin
- Department of Dermatology, University Hospital Münster, Münster, 48149, Germany.,Institute for Transfusion Medicine and Cell Therapy, University Hospital Münster, Münster, 48149, Germany
| | - H Wiegmann
- Department of Dermatology, University Hospital Münster, Münster, 48149, Germany
| | - T Tarinski
- Department of Dermatology, University Hospital Münster, Münster, 48149, Germany
| | - H Nikolenko
- Leibniz Research Institute of Molecular Pharmacology (FMP), Berlin, 13125, Germany
| | - H Traupe
- Department of Dermatology, University Hospital Münster, Münster, 48149, Germany
| | - E Liebau
- Institute of Animal Physiology, Department of Molecular Physiology, University of Münster, Münster, 48143, Germany
| | - M Dathe
- Leibniz Research Institute of Molecular Pharmacology (FMP), Berlin, 13125, Germany
| | - V Oji
- Department of Dermatology, University Hospital Münster, Münster, 48149, Germany
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Schnurr M, Volk I, Nikolenko H, Winkler L, Dathe M, Schröder L. Functionalized Lipopeptide Micelles as Highly Efficient NMR Depolarization Seed Points for Targeted Cell Labelling in Xenon MRI. ACTA ACUST UNITED AC 2020; 4:e1900251. [PMID: 32293139 DOI: 10.1002/adbi.201900251] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/28/2019] [Indexed: 01/07/2023]
Abstract
Improving diagnostic imaging and therapy by targeted compound delivery to pathological areas and across biological barriers is of urgent need. A lipopeptide, P-CrA-A2, composed of a highly cationic peptide sequence (A2), an N-terminally attached palmitoyl chain (P) and cryptophane molecule (CrA) for preferred uptake into blood-brain barrier (BBB) capillary endothelial cells, was generated. CrA allows reversible binding of Xe for NMR detection with hyperpolarized nuclei. The lipopeptide forms size-optimized micelles with a diameter of about 11 nm at low micromolar concentration. Their high local CrA payload has a strong and switchable impact on the bulk magnetization through Hyper-CEST detection. Covalent fixation of CrA does not impede micelle formation and does not hamper its host functionality but simplifies Xe access to hosts for inducing saturation transfer. Xe Hyper-CEST magnetic resonance imaging (MRI) allows for distinguishing BBB endothelial cells from control aortic endothelial cells, and the small micelle volume with a sevenfold improved CrA-loading density compared to liposomal carriers allows preferred cell labelling with a minimally invasive volume (≈16 000-fold more efficient than 19 F cell labelling). Thus, these nanoscopic particles combine selectivity for human brain capillary endothelial cells with great sensitivity of Xe Hyper-CEST MRI and might be a potential MRI tool in brain diagnostics.
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Affiliation(s)
- Matthias Schnurr
- Molecular Imaging, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Ines Volk
- Peptide-Lipid Interaction / Peptide Transport, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Heike Nikolenko
- Peptide-Lipid Interaction / Peptide Transport, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Lars Winkler
- Molecular Imaging, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Margitta Dathe
- Peptide-Lipid Interaction / Peptide Transport, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125, Berlin, Germany
| | - Leif Schröder
- Molecular Imaging, Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP), Robert-Rössle-Str. 10, 13125, Berlin, Germany
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8
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Teleanu DM, Chircov C, Grumezescu AM, Volceanov A, Teleanu RI. Blood-Brain Delivery Methods Using Nanotechnology. Pharmaceutics 2018; 10:E269. [PMID: 30544966 PMCID: PMC6321434 DOI: 10.3390/pharmaceutics10040269] [Citation(s) in RCA: 138] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 11/29/2018] [Accepted: 12/07/2018] [Indexed: 12/20/2022] Open
Abstract
Pathologies of the brain, of which brain cancer, Alzheimer's disease, Parkinson's disease, stroke, and multiple sclerosis, are some of the most prevalent, and that presently are poorly treated due to the difficulties associated with drug development, administration, and targeting to the brain. The existence of the blood-brain barrier, a selective permeability system which acts as a local gateway against circulating foreign substances, represents the key challenge for the delivery of therapeutic agents to the brain. However, the development of nanotechnology-based approaches for brain delivery, such as nanoparticles, liposomes, dendrimers, micelles, and carbon nanotubes, might be the solution for improved brain therapies.
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Affiliation(s)
- Daniel Mihai Teleanu
- Emergency University Hospital, Bucharest, Romania, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
| | - Cristina Chircov
- Faculty of Engineering in Foreign Languages, Politehnica University of Bucharest, 060042 București, Romania.
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 060042 București, Romania.
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 060042 București, Romania.
- ICUB-Research Institute of University of Bucharest, University of Bucharest, 36-46 M. Kogalniceanu Blvd., 050107 Bucharest, Romania.
| | - Adrian Volceanov
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, Politehnica University of Bucharest, 060042 București, Romania.
| | - Raluca Ioana Teleanu
- Emergency University Hospital, Bucharest, Romania, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania.
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9
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Niu X, Chen J, Gao J. Nanocarriers as a powerful vehicle to overcome blood-brain barrier in treating neurodegenerative diseases: Focus on recent advances. Asian J Pharm Sci 2018; 14:480-496. [PMID: 32104476 PMCID: PMC7032222 DOI: 10.1016/j.ajps.2018.09.005] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 08/26/2018] [Accepted: 09/01/2018] [Indexed: 02/08/2023] Open
Abstract
Neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, Huntington disease and amyotrophic lateral sclerosis throw a heavy burden on families and society. Related scientific researches make tardy progress. One reason is that the known pathogeny is just the tip of the iceberg. Another reason is that various physiological barriers, especially blood-brain barrier (BBB), hamper effective therapeutic substances from reaching site of action. Drugs in clinical treatment of neurodegenerative diseases are basically administered orally. And generally speaking, the brain targeting efficiency is pretty low. Nano-delivery technology brings hope for neurodegenerative diseases. The use of nanocarriers encapsulating molecules such as peptides and genomic medicine may enhance drug transport through the BBB in neurodegenerative disease and target relevant regions in the brain for regenerative processes. In this review, we discuss BBB composition and applications of nanocarriers -liposomes, nanoparticles, nanomicelles and new emerging exosomes in neurodegenerative diseases. Furthermore, the disadvantages and the potential neurotoxicity of nanocarriers according pharmacokinetics theory are also discussed.
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Affiliation(s)
- Xiaoqian Niu
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Jiejian Chen
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China.,Key Laboratory of Cancer Prevention and Intervention, the Second Affiliated Hospital, College of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Jianqing Gao
- Institute of Pharmaceutics, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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10
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Peretz Damari S, Shamrakov D, Varenik M, Koren E, Nativ-Roth E, Barenholz Y, Regev O. Practical aspects in size and morphology characterization of drug-loaded nano-liposomes. Int J Pharm 2018; 547:648-655. [PMID: 29913218 DOI: 10.1016/j.ijpharm.2018.06.037] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2018] [Revised: 05/21/2018] [Accepted: 06/15/2018] [Indexed: 12/15/2022]
Abstract
Size and morphology distributions are critical to the performance of nano-drug systems, as they determine drug pharmacokinetics and biodistribution. Therefore, comprehensive and reliable analyses of these properties are required by both the US Food and Drug Administration (FDA) and European Medicines Agency (EMA). In this study, we compare two most commonly used approaches for assessing the size distribution and morphology of liposomal nano-drug systems, namely, dynamic light scattering (DLS) and cryogenic-transmission electron microscopy (cryo-TEM); an automated quantitative analysis method was developed for the latter method. We demonstrate the advantages and disadvantages of each of these two approaches for a commercial formulation of the anti-cancer drug doxorubicin - Doxil®, in which the drug is encapsulated, mostly in the form of nano-rod crystals. With increasing drug concentration, these nano-rods change the shape of the liposomes from spherical, before drug loading, to prolate (oval), post drug loading. Cryo-TEM analysis provides a detailed size distribution of both the liposomes (minor and major axes) and the nano-rod drug. Both these values are relevant to the drug performance. In this study, we show that at elevated drug concentration (2.75 mg/ml) the drug grows mainly along the major axis and that this high concentration can result, in some cases, in liposome rupture. We show that the combination of cryo-TEM and DLS constitutes a reliable tool for demonstrating the stability of the formulation in human plasma at body temperature, a characteristic that is crucial for achieving therapeutic efficacy.
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Affiliation(s)
- Sivan Peretz Damari
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel.
| | | | - Maxim Varenik
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Erez Koren
- Laboratory of Membrane and Liposome Research, IMRIC, The Hebrew University-Hadassah Medical School, Jerusalem, Israel
| | - Einat Nativ-Roth
- The Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Yechezkel Barenholz
- Laboratory of Membrane and Liposome Research, IMRIC, The Hebrew University-Hadassah Medical School, Jerusalem, Israel.
| | - Oren Regev
- Department of Chemical Engineering, Ben-Gurion University of the Negev, Beer Sheva, Israel; The Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, Beer Sheva, Israel.
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11
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Titma T. The effect of surface charge and pH on the physiological behaviour of cobalt, copper, manganese, antimony, zinc and titanium oxide nanoparticles in vitro. Toxicol In Vitro 2018; 50:11-21. [PMID: 29458085 DOI: 10.1016/j.tiv.2018.02.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Revised: 11/23/2017] [Accepted: 02/15/2018] [Indexed: 01/08/2023]
Abstract
The precise knowledge on various interactions of metal nanoparticles (NP) in a living organism is scarce. It is expected that metals can bind to nucleic acids, peptides and proteins (e.g. enzymes), and modify the functioning of vital cellular compartments after entering the organism. The predictive factors for quantitative nanostructure-activity relationship (QNAR) analysis could enhance efficient and harmless usage of nanoparticles (NPs) in the industry as well in the medicine. The studies value the composition of the NP corona determined by time, temperature and source of protein which has been found to implicate the physiological behaviour of NPs. One has largely been ignored: the NPs specific isoelectric point (IEP) and pH at the state of measurement. Herein, this study investigates the effect of pH and surface charge of six metal oxide (MeOx) NPs on time dependency of cytotoxicity. Several aspects of the characterization of ultrafine particles in the actual test system which is the most relevant for the interpretation of the toxicological data are referred: (i) the difference of pH in the room temperature and in the incubation conditions (ii) the difference of dispersions in MilliQ and complete cell media; (iii) the need to exemplify also the pH and isoelectric point when the hydrodynamic size is measured; (iv) the importance of time due to the time-dependent equilibration and changes of NPs corona. The surface charge determines the formation of corona and could be modified by pH. MeOx NPs without fully charge equilibrated corona might play the main role of MeOx NPs entering into the cell and consequently the time dependent manifestation of the cellular effect.
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Affiliation(s)
- Tiina Titma
- Department of Health Technologies, School of Information Technologies, Tallinn University of Technology, Tallinn, Estonia.
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12
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He B, Ma S, Peng G, He D. TAT-modified self-assembled cationic peptide nanoparticles as an efficient antibacterial agent. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 14:365-372. [PMID: 29170111 DOI: 10.1016/j.nano.2017.11.002] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 07/26/2017] [Accepted: 11/04/2017] [Indexed: 12/12/2022]
Abstract
The increasing emergence of drug resistant pathogenic bacteria poses a great challenge to clinical therapy and a threat to public health. Cationic peptides have received great attention for their unique antibacterial mechanism and ability to combat drug-resistant bacteria. In this study, we designed a TAT-modified cationic peptide PA-28 which self-assembled into nanoparticles of about 150 nm. These nanoparticles showed strong antimicrobial activities against both gram-positive and gram-negative bacteria, including drug-resistant bacteria. They were more potent than the unassembled counterpart peptide nonalysine (K9). Their antibacterial mechanism of directly destructing bacterial wall/membrane reduces the possibility of developing bacterial resistance. In vivo anti-infective experiments showed that these nanoparticles were able to penetrate the blood-brain barrier to inhibit bacterial growth in infected brains of rats. In addition, these nanoparticles induced low hemolysis below the minimum inhibitory concentration. Therefore, the peptide designed in this study is a promising and efficient antibacterial agent against bacterial infections.
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Affiliation(s)
- Bi He
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Laboratory for Green Chemical Product Technology, South China University of Technology, Guangzhou, China
| | - Shiyi Ma
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Laboratory for Green Chemical Product Technology, South China University of Technology, Guangzhou, China
| | - Guifu Peng
- Clinical Laboratory, Affiliated Hospital of South China University of Technology, Guangzhou, China
| | - Daohang He
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Laboratory for Green Chemical Product Technology, South China University of Technology, Guangzhou, China.
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Xu HL, Fan ZL, ZhuGe DL, Shen BX, Jin BH, Xiao J, Lu CT, Zhao YZ. Therapeutic supermolecular micelles of vitamin E succinate-grafted ε-polylysine as potential carriers for curcumin: Enhancing tumour penetration and improving therapeutic effect on glioma. Colloids Surf B Biointerfaces 2017; 158:295-307. [DOI: 10.1016/j.colsurfb.2017.07.019] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2017] [Revised: 06/06/2017] [Accepted: 07/05/2017] [Indexed: 01/17/2023]
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Bernocchi B, Carpentier R, Betbeder D. Nasal nanovaccines. Int J Pharm 2017; 530:128-138. [PMID: 28698066 DOI: 10.1016/j.ijpharm.2017.07.012] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 07/03/2017] [Accepted: 07/04/2017] [Indexed: 01/08/2023]
Abstract
Nasal administration of vaccines is convenient for the potential stimulation of mucosal and systemic immune protection. Moreover the easy accessibility of the intranasal route renders it optimal for pandemic vaccination. Nanoparticles have been identified as ideal delivery systems and adjuvants for vaccine application. Heterogeneous protocols have been used for animal studies. This complicates the understanding of the formulation influence on the immune response and the comparison of the different nanoparticles approaches developed. Moreover anatomical and immunological differences between rodents and humans provide an additional hurdle in the rational development of nasal nanovaccines. This review will give a comprehensive expertise of the state of the art in nasal nanovaccines in animals and humans focusing on the nanomaterial used.
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Affiliation(s)
- B Bernocchi
- Inserm, LIRIC-UMR 995, F-59000 Lille, France; Université de Lille, LIRIC-UMR 995, F-59000 Lille, France; CHRU de Lille, LIRIC-UMR 995, F-59000 Lille, France
| | - R Carpentier
- Inserm, LIRIC-UMR 995, F-59000 Lille, France; Université de Lille, LIRIC-UMR 995, F-59000 Lille, France; CHRU de Lille, LIRIC-UMR 995, F-59000 Lille, France.
| | - D Betbeder
- Inserm, LIRIC-UMR 995, F-59000 Lille, France; Université de Lille, LIRIC-UMR 995, F-59000 Lille, France; CHRU de Lille, LIRIC-UMR 995, F-59000 Lille, France; University of Artois, 62000 Arras, France
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