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Dai M, Qian K, Ye Q, Yang J, Gan L, Jia Z, Pan Z, Cai Q, Jiang T, Ma C, Lin X. Specific Mode Electroacupuncture Stimulation Mediates the Delivery of NGF Across the Hippocampus Blood-Brain Barrier Through p65-VEGFA-TJs to Improve the Cognitive Function of MCAO/R Convalescent Rats. Mol Neurobiol 2024:10.1007/s12035-024-04337-8. [PMID: 38995444 DOI: 10.1007/s12035-024-04337-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 06/27/2024] [Indexed: 07/13/2024]
Abstract
Cognitive impairment frequently presents as a prevalent consequence following stroke, imposing significant burdens on patients, families, and society. The objective of this study was to assess the effectiveness and underlying mechanism of nerve growth factor (NGF) in treating post-stroke cognitive dysfunction in rats with cerebral ischemia-reperfusion injury (MCAO/R) through delivery into the brain using specific mode electroacupuncture stimulation (SMES). From the 28th day after modeling, the rats were treated with NGF mediated by SMES, and the cognitive function of the rats was observed after treatment. Learning and memory ability were evaluated using behavioral tests. The impact of SMES on blood-brain barrier (BBB) permeability, the underlying mechanism of cognitive enhancement in rats with MCAO/R, including transmission electron microscopy, enzyme-linked immunosorbent assay, immunohistochemistry, immunofluorescence, and TUNEL staining. We reported that SMES demonstrates a safe and efficient ability to open the BBB during the cerebral ischemia repair phase, facilitating the delivery of NGF to the brain by the p65-VEGFA-TJs pathway.
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Affiliation(s)
- Mengyuan Dai
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
- Department of Rehabilitation, Lishui Central Hospital, Lishui, 323000, Zhejiang Province, China
| | - Kecheng Qian
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Qinyu Ye
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Jinding Yang
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Lin Gan
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Zhaoxing Jia
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Zixing Pan
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Qian Cai
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Tianxiang Jiang
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Congcong Ma
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China.
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China.
- The Third Affiliated Hospital of Zhejiang, Chinese Medical University, Xihu District, Moganshan Road No. 219, Hangzhou, 310000, Zhejiang Province, China.
| | - Xianming Lin
- The Third Clinical Medical College, Zhejiang Chinese Medical University, 548 Binwen Road, Binjiang District, Hangzhou, 310051, Zhejiang Province, China.
- Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China.
- The Third Affiliated Hospital of Zhejiang, Chinese Medical University, Xihu District, Moganshan Road No. 219, Hangzhou, 310000, Zhejiang Province, China.
- Department of Rehabilitation, Zhejiang Rehabilitation Medical Center, No. 2828, Binsheng Road, Hangzhou, 310051, Zhejiang Province, China.
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Oeffinger BE, Stanczak M, Lepore AC, Eisenbrey JR, Wheatley MA. Determining Ultrasound Parameters for Bursting Polymer Microbubbles for Future Use in Spinal Cord Injury. ULTRASOUND IN MEDICINE & BIOLOGY 2024; 50:888-897. [PMID: 38519360 DOI: 10.1016/j.ultrasmedbio.2024.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 02/14/2024] [Accepted: 02/22/2024] [Indexed: 03/24/2024]
Abstract
OBJECTIVE We believe our poly(lactic acid) (PLA) microbubbles are well suited for therapeutic delivery to spinal cord injury (SCI) using ultrasound-triggered bursting. We investigated the feasibility of clinical ultrasound bursting in situ, the optimal bursting parameters in vitro and the loading and release of a model bio-active DNA. METHODS Microbubbles were tested using clinical ultrasound in a rat cadaver SCI model. Burst pressure thresholds were determined using the change in enhancement after ultrasound exposure. Resonance frequency, acoustic enhancement, sizing and morphology were evaluated by comparing two microbubble porogens, ammonium carbonate and ammonium carbamate. Oligonucleotides were loaded into the shell and released using the found optimized ultrasound bursting parameters. RESULTS In situ imaging and bursting were successful. In vitro bursting thresholds using frequencies 1, 2.25 and 5 MHz were identified between peak negative pressures 0.2 and 0.5 MPa, believed to be safe for spinal cord. The pressure threshold decreased with decreasing frequencies. PLA bursting was optimized near the resonance frequency of 2.5 to 3.0 MHz using 2.25 MHz and not at lower frequencies. PLA microbubbles, initially with a mean size of approximately 2 µm, remained in one piece, collapsed to between 0.5 and 1 µm and did not fragment. Significantly more oligonucleotide was released after ultrasound bursting of loaded microbubbles. Microbubble-sized debris was detected when using ammonium carbamate, leading to inaccurate microbubble concentration measurements. CONCLUSION PLA microbubbles made with ammonium carbonate and burst at appropriate parameters have the potential to safely improve intrathecal therapeutic delivery to SCI using targeted ultrasound.
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Affiliation(s)
- Brian E Oeffinger
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA
| | - Maria Stanczak
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Angelo C Lepore
- Department of Neuroscience, Vickie and Jack Farber Institute for Neuroscience, Sidney Kimmel Medical Collage at Thomas Jefferson University, Philadelphia, PA, USA
| | - John R Eisenbrey
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Margaret A Wheatley
- School of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, PA, USA.
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Xu R, Treeby BE, Martin E. Safety Review of Therapeutic Ultrasound for Spinal Cord Neuromodulation and Blood-Spinal Cord Barrier Opening. ULTRASOUND IN MEDICINE & BIOLOGY 2024; 50:317-331. [PMID: 38182491 DOI: 10.1016/j.ultrasmedbio.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 01/07/2024]
Abstract
New focused ultrasound spinal cord applications have emerged, particularly those improving therapeutic agent delivery to the spinal cord via blood-spinal cord barrier opening and the neuromodulation of spinal cord tracts. One hurdle in the development of these applications is safety. It may be possible to use safety trends from seminal and subsequent works in focused ultrasound to guide the development of safety guidelines for spinal cord applications. We collated data from decades of pre-clinical studies and illustrate a clear relationship between damage, time-averaged spatial peak intensity and exposure duration. This relationship suggests a thermal mechanism underlies ultrasound-induced spinal cord damage. We developed minimum and mean thresholds for damage from these pre-clinical studies. When these thresholds were plotted against the parameters used in recent pre-clinical ultrasonic spinal cord neuromodulation studies, the majority of the neuromodulation studies were near or above the minimum threshold. This suggests that a thermal neuromodulatory effect may exist for ultrasonic spinal cord neuromodulation, and that the thermal dose must be carefully controlled to avoid damage to the spinal cord. By contrast, the intensity-exposure duration threshold had no predictive value when applied to blood-spinal cord barrier opening studies that employed injected contrast agents. Most blood-spinal cord barrier opening studies observed slight to severe damage, except for small animal studies that employed an active feedback control method to limit pressures based on measured bubble oscillation behavior. The development of new focused ultrasound spinal cord applications perhaps reflects the recent success in the development of focused ultrasound brain applications, and recent work has begun on the translation of these technologies from brain to spinal cord. However, a great deal of work remains to be done, particularly with respect to developing and accepting safety standards for these applications.
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Affiliation(s)
- Rui Xu
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK.
| | - Bradley E Treeby
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK
| | - Eleanor Martin
- Department of Medical Physics and Biomedical Engineering, University College London, London, UK
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Kofoed RH, Aubert I. Focused ultrasound gene delivery for the treatment of neurological disorders. Trends Mol Med 2024; 30:263-277. [PMID: 38216449 DOI: 10.1016/j.molmed.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/11/2023] [Accepted: 12/15/2023] [Indexed: 01/14/2024]
Abstract
The transformative potential of gene therapy has been demonstrated in humans. However, there is an unmet need for non-invasive targeted gene delivery and regulation in the treatment of brain disorders. Transcranial focused ultrasound (FUS) has gained tremendous momentum to address these challenges. FUS non-invasively modulates brain cells and their environment, and is a powerful tool to facilitate gene delivery across the blood-brain barrier (BBB) with millimeter precision and promptly regulate transgene expression. This review highlights technical aspects of FUS-mediated gene therapies for the central nervous system (CNS) and lessons learned from discoveries in other organs. Understanding the possibilities and remaining obstacles of FUS-mediated gene therapy will be necessary to harness remarkable technologies and create life-changing treatments for neurological disorders.
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Affiliation(s)
- Rikke Hahn Kofoed
- Department of Neurosurgery, Department of Clinical Medicine, Aarhus University, Palle Juul-Jensens Boulevard 165, 8200 Aarhus N, Denmark; Center for Experimental Neuroscience (CENSE), Department of Neurosurgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 165, 8200 Aarhus N, Denmark; Biological Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, ON, Canada.
| | - Isabelle Aubert
- Biological Sciences, Hurvitz Brain Sciences Research Program, Sunnybrook Research Institute, Toronto, ON, Canada; Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
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Gao Y, Wang K, Wu S, Wu J, Zhang J, Li J, Lei S, Duan X, Men K. Injectable and Photocurable Gene Scaffold Facilitates Efficient Repair of Spinal Cord Injury. ACS APPLIED MATERIALS & INTERFACES 2024; 16:4375-4394. [PMID: 38185858 DOI: 10.1021/acsami.3c14902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
RNA interference-based gene therapy has led to a strategy for spinal cord injury (SCI) therapy. However, there have been high requirements regarding the optimal gene delivery vector for siRNA-based SCI gene therapy. Here, we developed an injectable and photocurable lipid nanoparticle GelMA (PLNG) hydrogel scaffold for controlled dual siRNA delivery at the SCI wound site. The prepared PLNG scaffold could efficiently protect and retain the bioactivity of the siRNA nanocomplex. It facilitated sustainable siRNA release along with degradation in 7 days. After loading dual siRNA targeting phosphatase and tensin homologue (PTEN) and macrophage migration inhibitory factor (MIF) simultaneously, the locally administered siRNAs/PLNG scaffold efficiently improved the Basso mouse scale (BMS) score and recovered ankle joint movement and plantar stepping after treatment with only three doses. We further proved that the siRNAs/PLNG scaffold successfully regulated the activities of neurons, microglia, and macrophages, thus promoting neuron axon regeneration and remyelination. The protein array results suggested that the siRNAs/PLNG scaffold could increase the expression of growth factors and decrease the expression of inflammatory factors to regulate neuroinflammation in SCI and create a neural repair environment. Our results suggested that the PLNG scaffold siRNA delivery system is a potential candidate for siRNA-based SCI therapy.
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Affiliation(s)
- Yan Gao
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Kaiyu Wang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Shan Wu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jieping Wu
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jin Zhang
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Jingmei Li
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Sibei Lei
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Xingmei Duan
- Department of Pharmacy, Sichuan Academy of Medical Sciences & Sichuan Provincial People's Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu 610072, China
| | - Ke Men
- Department of Biotherapy, Cancer Center and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China
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Grewal S, Gonçalves de Andrade E, Kofoed RH, Matthews PM, Aubert I, Tremblay MÈ, Morse SV. Using focused ultrasound to modulate microglial structure and function. Front Cell Neurosci 2023; 17:1290628. [PMID: 38164436 PMCID: PMC10757935 DOI: 10.3389/fncel.2023.1290628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Accepted: 10/31/2023] [Indexed: 01/03/2024] Open
Abstract
Transcranial focused ultrasound (FUS) has the unique ability to target regions of the brain with high spatial precision, in a minimally invasive manner. Neuromodulation studies have shown that FUS can excite or inhibit neuronal activity, demonstrating its tremendous potential to improve the outcome of neurological diseases. Recent evidence has also shed light on the emerging promise that FUS has, with and without the use of intravenously injected microbubbles, in modulating the blood-brain barrier and the immune cells of the brain. As the resident immune cells of the central nervous system, microglia are at the forefront of the brain's maintenance and immune defense. Notably, microglia are highly dynamic and continuously survey the brain parenchyma by extending and retracting their processes. This surveillance activity aids microglia in performing key physiological functions required for brain activity and plasticity. In response to stressors, microglia rapidly alter their cellular and molecular profile to help facilitate a return to homeostasis. While the underlying mechanisms by which both FUS and FUS + microbubbles modify microglial structure and function remain largely unknown, several studies in adult mice have reported changes in the expression of the microglia/macrophage marker ionized calcium binding adaptor molecule 1, and in their phagocytosis, notably of protein aggregates, such as amyloid beta. In this review, we discuss the demonstrated and putative biological effects of FUS and FUS + microbubbles in modulating microglial activities, with an emphasis on the key cellular and molecular changes observed in vitro and in vivo across models of brain health and disease. Understanding how this innovative technology can modulate microglia paves the way for future therapeutic strategies aimed to promote beneficial physiological microglial roles, and prevent or treat maladaptive responses.
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Affiliation(s)
- Sarina Grewal
- Department of Bioengineering, Imperial College London, London, United Kingdom
- Department of Brain Sciences, Imperial College London, London, United Kingdom
| | - Elisa Gonçalves de Andrade
- Neuroscience Graduate Program, Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
| | - Rikke Hahn Kofoed
- Department of Neurosurgery, Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Center for Experimental Neuroscience-CENSE, Department of Neurosurgery, Aarhus University Hospital, Aarhus, Denmark
- Hurvitz Brain Sciences Research Program, Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Paul M. Matthews
- Department of Brain Sciences, Imperial College London, London, United Kingdom
- UK Dementia Research Institute, Imperial College London, London, United Kingdom
| | - Isabelle Aubert
- Hurvitz Brain Sciences Research Program, Biological Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Laboratory Medicine and Pathobiology, Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | - Marie-Ève Tremblay
- Division of Medical Sciences, University of Victoria, Victoria, BC, Canada
- Axe Neurosciences, Centre de recherche du CHU de Québec-Université Laval, Québec, QC, Canada
- Department of Molecular Medicine, Université Laval, Québec, QC, Canada
- Department of Biochemistry and Molecular Biology, University of British Columbia, Vancouver, BC, Canada
| | - Sophie V. Morse
- Department of Bioengineering, Imperial College London, London, United Kingdom
- UK Dementia Research Institute, Imperial College London, London, United Kingdom
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Zhou N, Gu T, Xu Y, Liu Y, Peng L. Challenges and progress of neurodrug: bioactivities, production and delivery strategies of nerve growth factor protein. J Biol Eng 2023; 17:75. [PMID: 38049878 PMCID: PMC10696794 DOI: 10.1186/s13036-023-00392-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 11/10/2023] [Indexed: 12/06/2023] Open
Abstract
Nerve growth factor (NGF) is a vital cytokine that plays a crucial role in the development and regeneration of the nervous system. It has been extensively studied for its potential therapeutic applications in various neural diseases. However, as a protein drug, limited natural source seriously hinders its translation and clinical applications. Conventional extraction of NGF from mouse submandibular glands has a very high cost and potentially induces immunogenicity; total synthesis and semi-synthesis methods are alternatives, but have difficulty in obtaining correct protein structure; gene engineering of plant cells is thought to be non-immunogenic, bioactive and economical. Meanwhile, large molecular weight, high polarity, and negative electrical charge make it difficult for NGF to cross the blood brain barrier to reach therapeutic targets. Current delivery strategies mainly depend on the adenovirus and cell biodelivery, but the safety and efficacy remain to be improved. New materials are widely investigated for the controllable, safe and precise delivery of NGF. This review illustrates physiological and therapeutic effects of NGF for various diseases. Moreover, new progress in production and delivery technologies for NGF are summarized. Bottlenecks encountered in the development of NGF as therapeutics are also discussed with the countermeasures proposed.
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Affiliation(s)
- Nan Zhou
- College of Pharmaceutical Sciences, Zhejiang University, 866# Yuhangtang Road, Hangzhou, 310058, PR China
| | - TingWei Gu
- College of Pharmaceutical Sciences, Zhejiang University, 866# Yuhangtang Road, Hangzhou, 310058, PR China
| | - Yang Xu
- College of Pharmaceutical Sciences, Zhejiang University, 866# Yuhangtang Road, Hangzhou, 310058, PR China
| | - Yuda Liu
- College of Pharmaceutical Sciences, Zhejiang University, 866# Yuhangtang Road, Hangzhou, 310058, PR China
| | - LiHua Peng
- College of Pharmaceutical Sciences, Zhejiang University, 866# Yuhangtang Road, Hangzhou, 310058, PR China.
- State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau, PR China.
- Jinhua Institute of Zhejiang University, Jinhua, Zhejiang, 321299, PR China.
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Li N, Sun Y, Ouyang J, Che Y, Chen C, Li W, Wu C. A TiN-based nanophotosensitizer for enhanced photothermal therapy with the aid of ultrasound. Biochem Biophys Res Commun 2023; 679:82-89. [PMID: 37677981 DOI: 10.1016/j.bbrc.2023.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/08/2023] [Accepted: 09/02/2023] [Indexed: 09/09/2023]
Abstract
BACKGROUND AND PURPOSE Targeting and uptake are the most important strategies for enhancing the efficacy of cancer photothermal therapy (PTT) and reducing damage to surrounding normal tissues. In this study, a kind of nanophotosensitizer based on nanobubbles and TiN was prepared for synergetic therapy for hepatocellular carcinoma. METHODS The photothermal agent titanium nitride (TiN) was wrapped in nanobubbles by membrane hydration method and verified in cells and animals. CCK-8, cell death staining, and JC-1 were used to verify the pernicious effect of photothermal combined with Ultrasound Targeted Nanobubble Destruction (UTND) and then injected into animals through the tail vein to observe its photothermal effect and in vivo inhibitory effect. A hemolysis test and body weight change verified its safety. RESULTS The average diameter of the novel nanophotosensitizer was 300.3 ± 12.7 nm, with a consistent nanospheres morphology. The UTND technology was utilized to improve the penetration of TiN into tumor cells through the physical energy of ultrasound irradiation. The therapeutic effects of the synergistic therapy of UTND and PTT were verified in vitro and in vivo. CONCLUSION The research has established NBs@C3F8-TiN as a suitable ultrasound photothermal agent due to its appropriate size and efficient photothermal efficacy for visual photothermal therapy for HCC.
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Affiliation(s)
- Nan Li
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China
| | - Yunfeng Sun
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China
| | - Jiabao Ouyang
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China
| | - Yuna Che
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China
| | - Chen Chen
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China
| | - Wen Li
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China
| | - Changjun Wu
- Department of Ultrasound, The First Affiliated Hospital of Harbin Medical University, China.
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Alatrash R, Golubenko M, Martynova E, Garanina E, Mukhamedshina Y, Khaiboullina S, Rizvanov A, Salafutdinov I, Arkhipova S. Genetically Engineered Artificial Microvesicles Carrying Nerve Growth Factor Restrains the Progression of Autoimmune Encephalomyelitis in an Experimental Mouse Model. Int J Mol Sci 2023; 24:ijms24098332. [PMID: 37176039 PMCID: PMC10179478 DOI: 10.3390/ijms24098332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Revised: 04/27/2023] [Accepted: 05/02/2023] [Indexed: 05/15/2023] Open
Abstract
Multiple sclerosis (MS) is an incurable, progressive chronic autoimmune demyelinating disease. Therapy for MS is based on slowing down the processes of neurodegeneration and suppressing the immune system of patients. MS is accompanied by inflammation, axon-degeneration and neurogliosis in the central nervous system. One of the directions for a new effective treatment for MS is cellular, subcellular, as well as gene therapy. We investigated the therapeutic potential of adipose mesenchymal stem cell (ADMSC) derived, cytochalasin B induced artificial microvesicles (MVs) expressing nerve growth factor (NGF) on a mouse model of multiple sclerosis experimental autoimmune encephalomyelitis (EAE). These ADMSC-MVs-NGF were tested using histological, immunocytochemical and molecular genetic methods after being injected into the tail vein of animals on the 14th and 21st days post EAE induction. ADMSC-MVs-NGF contained the target protein inside the cytoplasm. Their injection into the caudal vein led to a significant decrease in neurogliosis at the 14th and 21st days post EAE induction. Artificial ADMSC-MVs-NGF stimulate axon regeneration and can modulate gliosis in the EAE model.
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Affiliation(s)
- Reem Alatrash
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
| | - Maria Golubenko
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
| | - Ekaterina Martynova
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
| | - Ekaterina Garanina
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
| | - Yana Mukhamedshina
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
- Department of Medical Biology and Genetics, Kazan State Medical University, 420012 Kazan, Russia
| | - Svetlana Khaiboullina
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
| | - Albert Rizvanov
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
| | - Ilnur Salafutdinov
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
- Department of Medical Biology and Genetics, Kazan State Medical University, 420012 Kazan, Russia
| | - Svetlana Arkhipova
- Institute of Fundamental Medicine and Biology, Kazan (Volga Region) Federal University, 420008 Kazan, Russia
- Department of Medical Biology and Genetics, Kazan State Medical University, 420012 Kazan, Russia
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Georgelou K, Saridaki EA, Karali K, Papagiannaki A, Charalampopoulos I, Gravanis A, Tzeranis DS. Microneurotrophin BNN27 Reduces Astrogliosis and Increases Density of Neurons and Implanted Neural Stem Cell-Derived Cells after Spinal Cord Injury. Biomedicines 2023; 11:biomedicines11041170. [PMID: 37189788 DOI: 10.3390/biomedicines11041170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/02/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
Microneurotrophins, small-molecule mimetics of endogenous neurotrophins, have demonstrated significant therapeutic effects on various animal models of neurological diseases. Nevertheless, their effects on central nervous system injuries remain unknown. Herein, we evaluate the effects of microneurotrophin BNN27, an NGF analog, in the mouse dorsal column crush spinal cord injury (SCI) model. BNN27 was delivered systemically either by itself or combined with neural stem cell (NSC)-seeded collagen-based scaffold grafts, demonstrated recently to improve locomotion performance in the same SCI model. Data validate the ability of NSC-seeded grafts to enhance locomotion recovery, neuronal cell integration with surrounding tissues, axonal elongation and angiogenesis. Our findings also show that systemic administration of BNN27 significantly reduced astrogliosis and increased neuron density in mice SCI lesion sites at 12 weeks post injury. Furthermore, when BNN27 administration was combined with NSC-seeded PCS grafts, BNN27 increased the density of survived implanted NSC-derived cells, possibly addressing a major challenge of NSC-based SCI treatments. In conclusion, this study provides evidence that small-molecule mimetics of endogenous neurotrophins can contribute to effective combinatorial treatments for SCI, by simultaneously regulating key events of SCI and supporting grafted cell therapies in the lesion site.
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Affiliation(s)
- Konstantina Georgelou
- Department of Pharmacology, School of Medicine, University of Crete, 71003 Heraklion, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 71003 Heraklion, Greece
| | | | - Kanelina Karali
- Department of Pharmacology, School of Medicine, University of Crete, 71003 Heraklion, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 71003 Heraklion, Greece
| | - Argyri Papagiannaki
- Department of Pharmacology, School of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Ioannis Charalampopoulos
- Department of Pharmacology, School of Medicine, University of Crete, 71003 Heraklion, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 71003 Heraklion, Greece
| | - Achille Gravanis
- Department of Pharmacology, School of Medicine, University of Crete, 71003 Heraklion, Greece
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 71003 Heraklion, Greece
| | - Dimitrios S Tzeranis
- Institute of Molecular Biology and Biotechnology, Foundation for Research and Technology-Hellas, 71003 Heraklion, Greece
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia 2109, Cyprus
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11
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Gao Y, Liao W, Zhang R, Lei Y, Chen T, Wu L, Li M, Liu X, Cai F. PK2/PKRs pathway is involved in the protective effect of artemisinin against trimethyltin chloride-induced hippocampal injury. Toxicology 2023; 486:153432. [PMID: 36696940 DOI: 10.1016/j.tox.2023.153432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Revised: 01/19/2023] [Accepted: 01/21/2023] [Indexed: 01/23/2023]
Abstract
Neuroinflammation is one of the important mechanisms of trimethyltin chloride (TMT) central neurotoxicity. Artemisinin (ARS) is a well-known antimalarial drug that also has significant anti-inflammatory effects. Prokineticin 2 (PK2) is a small molecule secreted protein that is widely expressed in the nervous system and plays a key role in the development of neuroinflammation. However, it remains unclear whether ARS can ameliorate neuroinflammation caused by TMT and whether PK2/PKRs signaling pathway plays a part in it. In this research, male Balb/c mice were administered TMT (2.8 mg/kg, i.p.) followed by immunohistochemistry to assess the expression of PK2, PKR1, and PKR2 proteins in the hippocampus. Network pharmacology was used to predict the intersection targets of ARS, central nervous system(CNS) injury and TMT. The neurobehavior of mice was evaluated by behavioral scores. Histopathological damage of the hippocampus was evaluated by HE, Nissl and Electron microscopy. Western blotting was used to identify the expression of synapse-related proteins (PSD95, SYN1, Synaptophysin), PK system-related proteins (PK2, PKR1, PKR2), and inflammation-related proteins (TNF-α, NF-κB p65). Immunohistochemistry showed that TMT resulted in elevated PK2 and PKR2 protein expression in the CA2 and CA3 regions of the hippocampus in mice, while PKR1 protein was not significantly altered. Network pharmacology showed that PK2 could interact with the intersectional targets of ARS, CNS injury, and TMT. ARS remarkably attenuated TMT-induced seizures and hippocampal histological damage. Further studies demonstrated that ARS treatment attenuated TMT-induced hippocampal ultrastructural damage, possibly by increasing the number of rough endoplasmic reticulum and mitochondria as well as upregulating the levels of synapse-associated proteins (PSD95, SYN1, Synaptophysin). Western blotting results revealed that ARS downregulated TMT-induced TNF-α and NF-κB p65 protein levels. In addition, ARS also decreased TMT-induced protein expression of PK2 and PKR2 in the mouse hippocampus, but had no significant effect on PKR1 protein expression. Our results suggested that ARS ameliorated TMT-induced abnormal neural behavior and hippocampal injury, which may be achieved by regulating PK2/PKRs inflammatory pathway and ameliorating synaptic injury. Therefore, we suggest that PK2/PKRs pathway may be involved in TMT neurotoxicity and ARS may be a promising drug that can relieve TMT neurotoxicity.
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Affiliation(s)
- Yuting Gao
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, 437100, China; School of Stomatology and Ophthalmology, Xianning Medical College, Hubei University of Science and Technology, 437100, China; Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Wenli Liao
- Basic Medical School, Xianning Medical College, Hubei University of Science and Technology, Xianning 437100, China
| | - Ruyi Zhang
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Yining Lei
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Tao Chen
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Lingling Wu
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Manqin Li
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Xinran Liu
- Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China
| | - Fei Cai
- School of Stomatology and Ophthalmology, Xianning Medical College, Hubei University of Science and Technology, 437100, China; Hubei Key Laboratory of Diabetes and Angiopathy, Hubei University of Science and Technology, Xianning 437100, China.
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12
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Gong W, Zhang T, Che M, Wang Y, He C, Liu L, Lv Z, Xiao C, Wang H, Zhang S. Recent advances in nanomaterials for the treatment of spinal cord injury. Mater Today Bio 2022; 18:100524. [PMID: 36619202 PMCID: PMC9813796 DOI: 10.1016/j.mtbio.2022.100524] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 12/06/2022] [Accepted: 12/16/2022] [Indexed: 12/23/2022] Open
Abstract
Spinal cord injuries (SCIs) are devastating. In SCIs, a powerful traumatic force impacting the spinal cord results in the permanent loss of nerve function below the injury level, leaving the patient paralyzed and wheelchair-bound for the remainder of his/her life. Unfortunately, clinical treatment that depends on surgical decompression appears to be unable to handle damaged nerves, and high-dose methylprednisolone-based therapy is also associated with problems, such as infection, gastrointestinal bleeding, femoral head necrosis, obesity, and hyperglycemia. Nanomaterials have opened new avenues for SCI treatment. Among them, performance-based nanomaterials derived from a variety of materials facilitate improvements in the microenvironment of traumatic injury and, in some cases, promote neuron regeneration. Nanoparticulate drug delivery systems enable the optimization of drug effects and drug bioavailability, thus contributing to the development of novel treatments. The improved efficiency and accuracy of gene delivery will also benefit the exploration of SCI mechanisms and the understanding of key genes and signaling pathways. Herein, we reviewed different types of nanomaterials applied to the treatment of SCI and summarized their functions and advantages to provide new perspectives for future clinical therapies.
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Affiliation(s)
- Weiquan Gong
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Tianhui Zhang
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Mingxue Che
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Yongjie Wang
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Chuanyu He
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Lidi Liu
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Zhenshan Lv
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China
| | - Chunsheng Xiao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China
| | - Hao Wang
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China,Corresponding author.
| | - Shaokun Zhang
- Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China,Jilin Engineering Research Center for Spine and Spinal Cord Injury, China,Corresponding author. Department of Spine Surgery, Orthopedics Center, First Hospital of Jilin University, No. 1 Xinmin Street, Changchun, 130021, China.
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Research on Polycaprolactone-Gelatin Composite Scaffolds Carrying Nerve Growth Factor for the Repair of Spinal Cord Injury. DISEASE MARKERS 2022; 2022:3880687. [PMID: 36212178 PMCID: PMC9536995 DOI: 10.1155/2022/3880687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 11/17/2022]
Abstract
Objective This study was to investigate the mechanism of action of polycaprolactone/gelatin (PCL/GE) composite fiber scaffold with nerve growth factor (NGF) in the recovery of spinal cord injury (SCI). Methods Sixty female Sprague-Dawley (SD) rats were randomly assigned to the negative control group, the positive control group, the PCL/GE scaffold group, and the collagen-binding structural domain nerve growth factor (CBD-NGF)/PCL/GE scaffold group, with 15 rats in each group. Spinal cord transection was used to establish SCI models in rats. The negative control group received sham surgery, while the other three groups were given spinal cord transection at the tenth thoracic vertebra (T10) segment. The rats in the PCL/GE scaffold group were implanted with a 4 mm PCL/GE composite fiber scaffold, and those in the CBD-NGF/PCL/GE scaffold group were implanted with a CBD-NGF/PCL/GE composite fiber scaffold. The Basso–Beattie–Bresnahan (BBB) locomotor rating scale was used to evaluate the locomotor ability of the hind limbs of the rats, and the amplitude and latency of motor evoked potentials (MEP) were recorded by neurophysiological testing at 12 w postoperatively. The levels of growth-associated protein 43 (GAP43) and neurofilament protein 200 (NF200) in the spinal cord tissue of the injury site were determined using Western Blot at 12 w after surgery. Spinal cord tissues of 2 cm within the injury site, the thoracic segment above the injury site, and the lumbar segment below the injury site were collected from the measurement of axonal transport using fluorescent retrograde tracer fluorogold, and the integrated absorbance (IA) values of FC-positive cells were calculated. Results After treatment, the negative control rats showed normal locomotion function of the hind limb with the highest BBB scores, while the positive control rats had the lowest BBB scores and showed paraplegia. The scaffold groups exhibited better locomotion function of the hind limb and higher BBB scores than the positive controls, with greater improvement observed in the CBD-NGF/PCL/GE scaffold group (P < 0.05). Compared with the positive controls, the PCL/GE scaffold group and CBD-NGF/PCL/GE scaffold group exhibited significantly shorter latency and increased amplitude of MEP, with more significant changes observed in the CBD-NGF/PCL/GE scaffold group (P < 0.05). Compared with the positive control group, the GAP43 and NF200 levels of spinal cord tissue were significantly elevated in both the PCL/GE scaffold group and the CBD-NGF/PCL/GE scaffold group, and the changes were more pronounced in the CBD-NGF/PCL/GE scaffold group (P < 0.05). The differences in the IA values of FC-positive cells in the spinal cord tissue of the lumbar segment below the injury site among the four groups did not come up to the statistical standard (P > 0.05). Compared with the positive control group, the FC-positive cell IA values of spinal cord tissue in the thoracic segment above the injury area were markedly increased in the PCL/GE scaffold group and the CBD-NGF/PCL/GE scaffold group, and the alterations were more significant in the CBD-NGF/PCL/GE scaffold group (P < 0.05). Conclusion PCL/GE composite fiber scaffold with NGF significantly improves motor and neurological functions in the hind limbs of SCI rats and promotes the recovery of axonal transport, and the mechanism may be associated with the upregulation of GAP43 and NF200 levels in spinal cord injury site tissues.
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Wang C, Tian Y, Wu B, Cheng W. Recent Progress Toward Imaging Application of Multifunction Sonosensitizers in Sonodynamic Therapy. Int J Nanomedicine 2022; 17:3511-3529. [PMID: 35966148 PMCID: PMC9365495 DOI: 10.2147/ijn.s370767] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/23/2022] [Indexed: 12/13/2022] Open
Abstract
Sonodynamic therapy (SDT) is a rapidly developing non-surgical therapy that initiates sensitizers’ catalytic reaction using ultrasound, showing great potential for cancer treatment due to its high safety and non-invasive nature. In addition, recent research has found that using different diagnostic and therapeutic methods in tandem can lead to better anticancer outcomes. Therefore, as essential components of SDT, sonosensitizers have been extensively explored to optimize their functions and integrate multiple medical fields. The review is based on five years of articles evaluating the combined use of SDT and imaging in treating cancer. By developing multifunctional sonosensitive particles that combine imaging and sonodynamic therapy, we have integrated diagnosis into the treatment of precision medicine applications, improving SDT cell uptake and antitumor efficacy utilizing different tumour models. This paper describes the imaging principle and the results of cellular and animal imaging of the multifunctional sonosensitizers. Efforts are made in this paper to provide data and design references for future SDT combined imaging research and clinical application development and to provide offer suggestions.
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Affiliation(s)
- Chunyue Wang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Yuhang Tian
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Bolin Wu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin, People’s Republic of China
- Correspondence: Wen Cheng; Bolin Wu, Department of Ultrasound, Harbin Medical University Cancer Hospital, No. 150, Haping Road, Nangang District, Harbin, 150081, People’s Republic of China, Tel +86 13313677182; +86 15663615088, Fax +86 451 85718392; +86 451 86298651, Email ;
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15
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Li S, Liao X, He Y, Chen R, Zheng WV, Tang M, Guo X, Chen J, Hu S, Sun J. Exosomes derived from NGF-overexpressing bone marrow mesenchymal stem cell sheet promote spinal cord injury repair in a mouse model. Neurochem Int 2022; 157:105339. [DOI: 10.1016/j.neuint.2022.105339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 11/28/2022]
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16
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Xi Y, Li H, Yu M, Li X, Li Y, Hui B, Zeng X, Wang J, Li J. Protective effects of chlorogenic acid on trimethyltin chloride-induced neurobehavioral dysfunctions in mice relying on the gut microbiota. Food Funct 2022; 13:1535-1550. [PMID: 35072194 DOI: 10.1039/d1fo03334d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Trimethyltin chloride (TMT) is acknowledged to have potent neurotoxicity. Chlorogenic acid (CGA), the most abundant polyphenol in the human diet, is well-known for its neuroprotective activity. This investigation was performed to determine the effects and mechanisms of CGA on TMT-induced neurobehavioral dysfunctions. Mice received oral administrations of CGA (30 mg kg-1) for 11 days, in which they were intraperitoneally injected with TMT (2.7 mg kg-1) once on the 8th day. The daily intake of CGA significantly alleviated TMT-induced epilepsy-like seizure and cognition impairment, ameliorating hippocampal neuronal degeneration and neuroinflammation. Oral gavage of CGA potentially exerted neuroprotective effects through JNK/c-Jun and TLR4/NFκB pathways. Microbiome analysis revealed that daily consumption of CGA raised the relative abundance of Lactobacillus in TMT-treated mice. SCFAs, the gut microbial metabolites associated with neuroprotection, were increased in the mouse hippocampus following CGA treatment. TMT-induced neurotransmitter disorders were regulated by oral gavage of CGA, especially DL-kynurenine and acetylcholine chloride. Additionally, neurotransmitters in the mouse hippocampus were found to be highly associated with the gut microbiota. Our findings provided research evidence for the neuroprotective effect of CGA on TMT-induced neurobehavioral dysfunctions.
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Affiliation(s)
- Yu Xi
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - He Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Meihong Yu
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Xuejie Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Yan Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Bowen Hui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Xiangquan Zeng
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Jing Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
| | - Jian Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, NO. 33 Fucheng Road, Beijing, 100048, China.
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Wang L, Gu S, Gan J, Tian Y, Zhang F, Zhao H, Lei D. Neural Stem Cells Overexpressing Nerve Growth Factor Improve Functional Recovery in Rats Following Spinal Cord Injury via Modulating Microenvironment and Enhancing Endogenous Neurogenesis. Front Cell Neurosci 2021; 15:773375. [PMID: 34924958 PMCID: PMC8675903 DOI: 10.3389/fncel.2021.773375] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/15/2021] [Indexed: 01/15/2023] Open
Abstract
Spinal cord injury (SCI) is a devastating event characterized by severe motor, sensory, and autonomic dysfunction. Currently, there is no effective treatment. Previous studies showed neural growth factor (NGF) administration was a potential treatment for SCI. However, its targeted delivery is still challenging. In this study, neural stem cells (NSCs) were genetically modified to overexpress NGF, and we evaluated its therapeutic value following SCI. Four weeks after transplantation, we observed that NGF-NSCs significantly enhanced the motor function of hindlimbs after SCI and alleviated histopathological damage at the lesion epicenter. Notably, the survival NGF-NSCs at lesion core maintained high levels of NGF. Further immunochemical assays demonstrated the graft of NGF-NSCs modulated the microenvironment around lesion core via reduction of oligodendrocyte loss, attenuation of astrocytosis and demyelination, preservation of neurons, and increasing expression of multiple growth factors. More importantly, NGF-NSCs seemed to crosstalk with and activate resident NSCs, and high levels of NGF activated TrkA, upregulated cAMP-response element binding protein (CREB) and microRNA-132 around the lesion center. Taken together, the transplantation of NGF-NSCs in the subacute stage of traumatic SCI can facilitate functional recovery by modulating the microenvironment and enhancing endogenous neurogenesis in rats. And its neuroprotective effect may be mediated by activating TrkA, up-regulation of CREB, and microRNA-132.
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Affiliation(s)
- Lei Wang
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Sujie Gu
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jinlu Gan
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yi Tian
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fangcheng Zhang
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongyang Zhao
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Deqiang Lei
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Modulation of the Blood-Brain Barrier for Drug Delivery to Brain. Pharmaceutics 2021; 13:pharmaceutics13122024. [PMID: 34959306 PMCID: PMC8708282 DOI: 10.3390/pharmaceutics13122024] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 11/15/2021] [Accepted: 11/25/2021] [Indexed: 12/26/2022] Open
Abstract
The blood-brain barrier (BBB) precisely controls brain microenvironment and neural activity by regulating substance transport into and out of the brain. However, it severely hinders drug entry into the brain, and the efficiency of various systemic therapies against brain diseases. Modulation of the BBB via opening tight junctions, inhibiting active efflux and/or enhancing transcytosis, possesses the potential to increase BBB permeability and improve intracranial drug concentrations and systemic therapeutic efficiency. Various strategies of BBB modulation have been reported and investigated preclinically and/or clinically. This review describes conventional and emerging BBB modulation strategies and related mechanisms, and safety issues according to BBB structures and functions, to try to give more promising directions for designing more reasonable preclinical and clinical studies.
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Wu Z, Wang Z, Xie Z, Zhu H, Li C, Xie S, Zhou W, Zhang Z, Li M. Glycyrrhizic Acid Attenuates the Inflammatory Response After Spinal Cord Injury by Inhibiting High Mobility Group Box-1 Protein Through the p38/Jun N-Terminal Kinase Signaling Pathway. World Neurosurg 2021; 158:e856-e864. [PMID: 34838764 DOI: 10.1016/j.wneu.2021.11.085] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/19/2021] [Accepted: 11/20/2021] [Indexed: 12/16/2022]
Abstract
BACKGROUND Neuroinflammation is an important secondary aggravating factor in spinal cord injury (SCI). Inhibition of the inflammatory response is critical for SCI treatment. Glycyrrhizic acid (GA) is an anti-inflammatory drug, but its utility for SCI is unclear. This study aimed to evaluate the effects of GA on inflammation after SCI and the underlying mechanism. METHODS Cell counting kit-8 assays were performed to assess the viability of highly aggressively proliferating immortalized cells that had been treated with lipopolysaccharide (LPS) and/or GA. Reverse transcription quantitative polymerase chain reaction and Western blotting were performed to assess expression of high mobility group box-1 protein (HMGB1), ionized calcium binding adaptor molecule 1, and inflammatory factors in vitro and in vivo. GA (100 mg/kg) was intraperitoneally injected into rats. Anti-inflammatory effects of GA were analyzed in SCI tissues. p38/Jun N-terminal kinase signaling pathway proteins were analyzed by Western blotting. RESULTS Cell counting kit-8 assay results showed that treatment with 100 ng/mL LPS for 12 hours was optimal. After LPS treatment, highly aggressively proliferating immortalized cells were activated; messenger RNA expression levels of HMGB1 and inflammatory factors were increased. GA significantly inhibited LPS-induced HMGB1 expression and inflammatory responses, as determined by reverse transcription quantitative polymerase chain reaction and Western blotting. Transfection with an HMGB1-overexpression plasmid reversed the anti-inflammatory effects of GA. In addition, intraperitoneal injection of GA (100 mg/kg) into rats for 3 days significantly reduced expression levels of HMGB1 and inflammatory factors after SCI in vivo. GA reduced phosphorylation, but not levels, of p38 and Jun N-terminal kinase proteins. CONCLUSIONS GA attenuates the inflammatory response after SCI by inhibiting HMGB1 through the p38/JNK signaling pathway and thus has therapeutic potential for SCI.
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Affiliation(s)
- Zhiwu Wu
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhihua Wang
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhiping Xie
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huaxin Zhu
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Chengcai Li
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shenke Xie
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wu Zhou
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhixiong Zhang
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Meihua Li
- Department of Neurosurgery and Jiangxi Key Laboratory of Neurosurgery, The First Affiliated Hospital of Nanchang University, Nanchang, China.
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21
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Mitra S, Gera R, Linderoth B, Lind G, Wahlberg L, Almqvist P, Behbahani H, Eriksdotter M. A Review of Techniques for Biodelivery of Nerve Growth Factor (NGF) to the Brain in Relation to Alzheimer's Disease. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1331:167-191. [PMID: 34453298 DOI: 10.1007/978-3-030-74046-7_11] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Age-dependent progressive neurodegeneration and associated cognitive dysfunction represent a serious concern worldwide. Currently, dementia accounts for the fifth highest cause of death, among which Alzheimer's disease (AD) represents more than 60% of the cases. AD is associated with progressive cognitive dysfunction which affects daily life of the affected individual and associated family. The cognitive dysfunctions are at least partially due to the degeneration of a specific set of neurons (cholinergic neurons) whose cell bodies are situated in the basal forebrain region (basal forebrain cholinergic neurons, BFCNs) but innervate wide areas of the brain. It has been explicitly shown that the delivery of the neurotrophic protein nerve growth factor (NGF) can rescue BFCNs and restore cognitive dysfunction, making NGF interesting as a potential therapeutic substance for AD. Unfortunately, NGF cannot pass through the blood-brain barrier (BBB) and thus peripheral administration of NGF protein is not viable therapeutically. NGF must be delivered in a way which will allow its brain penetration and availability to the BFCNs to modulate BFCN activity and viability. Over the past few decades, various methodologies have been developed to deliver NGF to the brain tissue. In this chapter, NGF delivery methods are discussed in the context of AD.
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Affiliation(s)
- Sumonto Mitra
- Division of Clinical Geriatrics, NVS Department, Karolinska Institutet, Stockholm, Sweden.
| | - Ruchi Gera
- Division of Clinical Geriatrics, NVS Department, Karolinska Institutet, Stockholm, Sweden
| | - Bengt Linderoth
- Section of Neurosurgery, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Göran Lind
- Section of Neurosurgery, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | | | - Per Almqvist
- Section of Neurosurgery, Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Homira Behbahani
- Division of Clinical Geriatrics, NVS Department, Karolinska Institutet, Stockholm, Sweden.,Karolinska Universitets laboratoriet (LNP5), Karolinska University Hospital, Stockholm, Sweden
| | - Maria Eriksdotter
- Division of Clinical Geriatrics, NVS Department, Karolinska Institutet, Stockholm, Sweden.,Theme Aging, Karolinska University Hospital, Huddinge, Sweden
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Zhang M, Rodrigues A, Zhou Q, Li G. Focused ultrasound: growth potential and future directions in neurosurgery. J Neurooncol 2021; 156:23-32. [PMID: 34410576 DOI: 10.1007/s11060-021-03820-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 07/31/2021] [Indexed: 12/18/2022]
Abstract
Over the past two decades, vast improvements in focused ultrasound (FUS) technology have made the therapy an exciting addition to the neurosurgical armamentarium. In this time period, FUS has gained US Food and Drug Administration (FDA) approval for the treatment of two neurological disorders, and ongoing efforts seek to expand the lesion profile that is amenable to ultrasonic intervention. In the following review, we highlight future applications for FUS therapy and compare its potential role against established technologies, including deep brain stimulation and stereotactic radiosurgery. Particular attention is paid to tissue ablation, blood-brain-barrier opening, and gene therapy. We also address technical and infrastructural challenges involved with FUS use and summarize the hurdles that must be overcome before FUS becomes widely accepted in the neurosurgical community.
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Affiliation(s)
- Michael Zhang
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA. .,Center for Academic Medicine, Neurosurgery, Stanford University School of Medicine, MC 5327, 453 Quarry Road, Palo Alto, CA, 94304, USA.
| | - Adrian Rodrigues
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Quan Zhou
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA.,Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, USA
| | - Gordon Li
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, CA, USA
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Zhang H, Yang T. FBXW7alpha Promotes the Recovery of Traumatic Spinal Cord. Curr Mol Med 2021; 20:494-504. [PMID: 31870261 DOI: 10.2174/1566524020666191223164916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/20/2019] [Accepted: 12/12/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND White matter damage and neuronal cell death are incurred by spinal cord injury (SCI). FBXW7α, an important mediator of cell division and growth was investigated to explore its role in repairing the traumatic spinal cord in rats. Underlying mechanisms such as oxidative stress and inflammasomes signaling were also studied. METHODS Spinal cord injury in rats was established by longitudinal surgical incision from the lower to mid-thoracic vertebrae on the backside, followed by 20-g weight placed on the exposed Th12 surface for 30 min. AAV-delivered FBXW7α and -sh-FBXW7α were intrathecally injected into the rat spinal cord. Indices of oxidation, neurotrophic factors, and pyroptosis were measured by Western blot, Elisa, and RT-PCR. RESULTS We found the overexpression of FBXW7α in spinal cord rescue neuronal death triggered by the injury. Specifically, the nutritional condition, oxidative stress, and pyroptosis were improved. A synchronization of BNDF and GDNF expression patterns in various groups indicated the secretion of neurotrophic factors affect the outcome of SCI. The SOD1, CAT, and GSH-px were suppressed after trauma but all restored in response to FBXW7α overexpression. Inflammasomes-activated pyroptosis was incurred after the injury, and relevant biomarkers such as GSDMD, caspase-1, caspase- 11, IL-1β, and IL-18 were down-regulated after the introduction of FBXW7α into the injured cord. Additionally, up-regulating FBXW7α also repaired the mitochondria dysfunction. CONCLUSION Our data indicate FBXW7α probably serves as an important molecular target for the therapy of spinal cord injury.
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Affiliation(s)
- Hong Zhang
- Department of Trauma Center, The First People's Hospital of Lianyungang, Lianyungang City, Jiangsu Province, 222061, China
| | - Tao Yang
- Department of Orthopedics, 4th (Xing Yuan) Hospital of Yulin, Yulin City, Shaanxi Province, 719000, China
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24
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Alastra G, Aloe L, Baldassarro VA, Calzà L, Cescatti M, Duskey JT, Focarete ML, Giacomini D, Giardino L, Giraldi V, Lorenzini L, Moretti M, Parmeggiani I, Sannia M, Tosi G. Nerve Growth Factor Biodelivery: A Limiting Step in Moving Toward Extensive Clinical Application? Front Neurosci 2021; 15:695592. [PMID: 34335170 PMCID: PMC8319677 DOI: 10.3389/fnins.2021.695592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 06/21/2021] [Indexed: 12/11/2022] Open
Abstract
Nerve growth factor (NGF) was the first-discovered member of the neurotrophin family, a class of bioactive molecules which exerts powerful biological effects on the CNS and other peripheral tissues, not only during development, but also during adulthood. While these molecules have long been regarded as potential drugs to combat acute and chronic neurodegenerative processes, as evidenced by the extensive data on their neuroprotective properties, their clinical application has been hindered by their unexpected side effects, as well as by difficulties in defining appropriate dosing and administration strategies. This paper reviews aspects related to the endogenous production of NGF in healthy and pathological conditions, along with conventional and biomaterial-assisted delivery strategies, in an attempt to clarify the impediments to the clinical application of this powerful molecule.
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Affiliation(s)
- Giuseppe Alastra
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
| | | | - Vito Antonio Baldassarro
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
| | - Laura Calzà
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- IRET Foundation, Bologna, Italy
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | | | - Jason Thomas Duskey
- Nanotech Laboratory, TeFarTI Center, Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Maria Letizia Focarete
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Bologna, Italy
| | - Daria Giacomini
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Bologna, Italy
| | - Luciana Giardino
- IRET Foundation, Bologna, Italy
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Valentina Giraldi
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
- Department of Chemistry “Giacomo Ciamician”, University of Bologna, Bologna, Italy
| | - Luca Lorenzini
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | | | - Irene Parmeggiani
- Nanotech Laboratory, TeFarTI Center, Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Michele Sannia
- Interdepartmental Centre for Industrial Research in Health Sciences and Technologies, University of Bologna, Bologna, Italy
| | - Giovanni Tosi
- Nanotech Laboratory, TeFarTI Center, Department of Life Sciences, University of Modena and Reggio Emilia, Modena, Italy
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25
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Xia N, Gao Z, Hu H, Li D, Zhang C, Mei X, Wu C. Nerve growth factor loaded macrophage-derived nanovesicles for inhibiting neuronal apoptosis after spinal cord injury. J Biomater Appl 2021; 36:276-288. [PMID: 34167336 DOI: 10.1177/08853282211025912] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Spinal cord injury (SCI) is an extremely destructive central nervous system lesion. Studies have shown that NGF can promote nerve regeneration after SCI. However, it cannot produce the desired effect due to its stability in the body and is difficulty in passing through the blood-brain barrier. In this study, we prepared nanovesicles derived from macrophage membrane encapsulating NGF (NGF-NVs) as a drug carrier for the treatment of SCI. Cell experiments showed that NGF-NVs were effectively taken up by PC12 cells and inhibited neuronal apoptosis. In vivo imaging experiments, a large quantity of NGF was delivered to the injured site with the aid of the good targeting of NVs. In animal experiments, NGF-NVs improved the survival of neurons by significantly activating the PI3K/AKT signaling pathway and had good behavioral and histological recovery effects after SCI. Therefore, NVs are a potential drug delivery vector for SCI therapy.
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Affiliation(s)
- Nan Xia
- Pharmacy School, Jinzhou Medical University, Jinzhou, China
| | - Zhanshan Gao
- Pharmacy School, Jinzhou Medical University, Jinzhou, China
| | - Hengshuo Hu
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning province, China
| | - Daoyong Li
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning province, China
| | - Chuanjie Zhang
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning province, China
| | - Xifan Mei
- Department of Orthopedics, The First Affiliated Hospital of Jinzhou Medical University, Jinzhou, Liaoning province, China
| | - Chao Wu
- Pharmacy School, Jinzhou Medical University, Jinzhou, China
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26
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Hwang BY, Mampre D, Ahmed AK, Suk I, Anderson WS, Manbachi A, Theodore N. Ultrasound in Traumatic Spinal Cord Injury: A Wide-Open Field. Neurosurgery 2021; 89:372-382. [PMID: 34098572 DOI: 10.1093/neuros/nyab177] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 03/19/2021] [Indexed: 02/02/2023] Open
Abstract
Traumatic spinal cord injury (SCI) is a common and devastating condition. In the absence of effective validated therapies, there is an urgent need for novel methods to achieve injury stabilization, regeneration, and functional restoration in SCI patients. Ultrasound is a versatile platform technology that can provide a foundation for viable diagnostic and therapeutic interventions in SCI. In particular, real-time perfusion and inflammatory biomarker monitoring, focal pharmaceutical delivery, and neuromodulation are capabilities that can be harnessed to advance our knowledge of SCI pathophysiology and to develop novel management and treatment options. Our review suggests that studies that evaluate the benefits and risks of ultrasound in SCI are severely lacking and our understanding of the technology's potential impact remains poorly understood. Although the complex anatomy and physiology of the spine and the spinal cord remain significant challenges, continued technological advances will help the field overcome the current barriers and bring ultrasound to the forefront of SCI research and development.
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Affiliation(s)
- Brian Y Hwang
- Division of Functional Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - David Mampre
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - A Karim Ahmed
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Ian Suk
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - William S Anderson
- Division of Functional Neurosurgery, Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.,Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Amir Manbachi
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Nicholas Theodore
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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27
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Zhao C, Xing Z, Zhang C, Fan Y, Liu H. Nanopharmaceutical-based regenerative medicine: a promising therapeutic strategy for spinal cord injury. J Mater Chem B 2021; 9:2367-2383. [PMID: 33662083 DOI: 10.1039/d0tb02740e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Spinal cord injury (SCI) is a neurological disorder that can lead to loss of perceptive and athletic function due to the severe nerve damage. To date, pieces of evidence detailing the precise pathological mechanisms in SCI are still unclear. Therefore, drug therapy cannot effectively alleviate the SCI symptoms and faces the limitations of systemic administration with large side effects. Thus, the development of SCI treatment strategies is urgent and valuable. Due to the application of nanotechnology in pharmaceutical research, nanopharmaceutical-based regenerative medicine will bring colossal development space for clinical medicine. These nanopharmaceuticals (i.e. nanocrystalline drugs and nanocarrier drugs) are designed using different types of materials or bioactive molecules, so as to improve the therapeutic effects, reduce side effects, and subtly deliver drugs, etc. Currently, an increasing number of nanopharmaceutical products have been approved by drug regulatory agencies, which has also prompted more researchers to focus on the potential treatment strategies of SCI. Therefore, the purpose of this review is to summarize and elaborate the research progress as well as the challenges and future of nanopharmaceuticals in the treatment of SCI, aiming to promote further research of nanopharmaceuticals in SCI.
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Affiliation(s)
- Chen Zhao
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China. and School of Pharmaceutical Sciences, Tsinghua University, Beijing, 100084, P. R. China
| | - Zheng Xing
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China.
| | - Chunchen Zhang
- Key Laboratory for Biomedical Engineering of Education Ministry of China, Zhejiang University, Hangzhou, 310027, P. R. China and Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou, 310027, P. R. China
| | - Yubo Fan
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China.
| | - Haifeng Liu
- Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education, Beijing Advanced Innovation Centre for Biomedical Engineering, School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, P. R. China.
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28
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Epidural Stimulation Combined with Triple Gene Therapy for Spinal Cord Injury Treatment. Int J Mol Sci 2020; 21:ijms21238896. [PMID: 33255323 PMCID: PMC7734573 DOI: 10.3390/ijms21238896] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 11/06/2020] [Accepted: 11/17/2020] [Indexed: 12/18/2022] Open
Abstract
The translation of new therapies for spinal cord injury to clinical trials can be facilitated with large animal models close in morpho-physiological scale to humans. Here, we report functional restoration and morphological reorganization after spinal contusion in pigs, following a combined treatment of locomotor training facilitated with epidural electrical stimulation (EES) and cell-mediated triple gene therapy with umbilical cord blood mononuclear cells overexpressing recombinant vascular endothelial growth factor, glial-derived neurotrophic factor, and neural cell adhesion molecule. Preliminary results obtained on a small sample of pigs 2 months after spinal contusion revealed the difference in post-traumatic spinal cord outcomes in control and treated animals. In treated pigs, motor performance was enabled by EES and the corresponding morpho-functional changes in hind limb skeletal muscles were accompanied by the reorganization of the glial cell, the reaction of stress cell, and synaptic proteins. Our data demonstrate effects of combined EES-facilitated motor training and cell-mediated triple gene therapy after spinal contusion in large animals, informing a background for further animal studies and clinical translation.
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29
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Menikheim S, Leckron J, Bernstein S, Lavik EB. On-Demand and Long-Term Drug Delivery from Degradable Nanocapsules. ACS APPLIED BIO MATERIALS 2020; 3:7369-7375. [DOI: 10.1021/acsabm.0c01130] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sydney Menikheim
- Chemical, Biochemical, and Environmental Engineering, UMBC, Baltimore, Maryland 21250, Piscataway Territories
| | - Joshua Leckron
- Chemical, Biochemical, and Environmental Engineering, UMBC, Baltimore, Maryland 21250, Piscataway Territories
| | - Steven Bernstein
- Department of Ophthalmology and Visual Sciences, UMB, Baltimore, Maryland 21201, United States
| | - Erin B. Lavik
- Chemical, Biochemical, and Environmental Engineering, UMBC, Baltimore, Maryland 21250, Piscataway Territories
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30
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Oliva N, Almquist BD. Spatiotemporal delivery of bioactive molecules for wound healing using stimuli-responsive biomaterials. Adv Drug Deliv Rev 2020; 161-162:22-41. [PMID: 32745497 DOI: 10.1016/j.addr.2020.07.021] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/03/2020] [Accepted: 07/23/2020] [Indexed: 12/28/2022]
Abstract
Wound repair is a fascinatingly complex process, with overlapping events in both space and time needed to pave a pathway to successful healing. This additional complexity presents challenges when developing methods for the controlled delivery of therapeutics for wound repair and tissue engineering. Unlike more traditional applications, where biomaterial-based depots increase drug solubility and stability in vivo, enhance circulation times, and improve retention in the target tissue, when aiming to modulate wound healing, there is a desire to enable localised, spatiotemporal control of multiple therapeutics. Furthermore, many therapeutics of interest in the context of wound repair are sensitive biologics (e.g. growth factors), which present unique challenges when designing biomaterial-based delivery systems. Here, we review the diverse approaches taken by the biomaterials community for creating stimuli-responsive materials that are beginning to enable spatiotemporal control over the delivery of therapeutics for applications in tissue engineering and regenerative medicine.
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31
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Rong M, Chang Z, Ou J, Zhao S, Zeng W, Liu Q. [The fabrication and related properties study of chitosan-poly (lactide-co-glycolide) double-walled microspheres loaded with nerve growth factor]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:102-108. [PMID: 31939244 DOI: 10.7507/1002-1892.201905074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To evaluate the feasibility of the chitosan-poly (lactide-co-glycolide) (PLGA) double-walled microspheres for sustained release of bioactive nerve growth factor (NGF) in vitro. Methods NGF loaded chitosan-PLGA double-walled microspheres were prepared by emulsion-ionic method with sodium tripolyphosphate (TPP) as an ionic cross-linker. The double-walled microspheres were cross-linked by different concentrations of TPP [1%, 3%, 10% ( W/ V)]. NGF loaded PLGA microspheres were also prepared. The outer and inner structures of double-walled microspheres were observed by light microscopy, scanning electron microscopy, confocal laser scanning microscopy, respectively. The size and distribution of microspheres and fourier transform infra red spectroscopy (FT-IR) were analyzed. PLGA microspheres with NGF or chitosan-PLGA double-walled microspheres cross-linked by 1%, 3%, and 10%TPP concentration (set as groups A, B, C, and D respectively) were used to determine the degradation ratio of microspheres in vitro and the sustained release ratio of NGF in microspheres at different time points. The bioactivity of NGF (expressed as the percentage of PC12 cells with positive axonal elongation reaction) in the sustained release solution of chitosan-PLGA double-walled microspheres without NGF (set as group A1) was compared in groups B, C, and D. Results The chitosan-PLGA double-walled microspheres showed relative rough and spherical surfaces without aggregation. Confocal laser scanning microscopy showed PLGA microspheres were evenly uniformly distributed in the chitosan-PLGA double-walled microspheres. The particle size of microspheres ranged from 18.5 to 42.7 μm. The results of FT-IR analysis showed ionic interaction between amino groups and phosphoric groups of chitosan in double-walled microspheres and TPP. In vitro degradation ratio analysis showed that the degradation ratio of double-walled microspheres in groups B, C, and D appeared faster in contrast to that in group A. In addition, the degradation ratio of double-walled microsphere in groups B, C, and D decreased when the TPP concentration increased. There were significant differences in the degradation ratio of each group ( P<0.05). In vitro sustained release ratio of NGF showed that when compared with PLGA microspheres in group A, double-walled microspheres in groups B, C, and D released NGF at a relatively slow rate, and the sustained release ratio decreased with the increase of TPP concentration. Except for 84 days, there was significant difference in the sustained release ratio of NGF between groups B, C, and D ( P<0.05). The bioactivity of NGF results showed that the percentage of PC12 cells with positive axonal elongation reaction in groups B, C, and D was significantly higher than that in group A1 ( P<0.05). At 7 and 28 days of culture, there was no significant difference between groups B, C, and D ( P>0.05); at 56 and 84 days of culture, the percentage of PC12 cells with positive axonal elongation reaction in groups C and D was significantly higher than that in group B ( P<0.05), and there was no significant difference between groups C and D ( P>0.05). Conclusion NGF loaded chitosan-PLGA double-walled microspheres have a potential clinical application in peripheral nerve regeneration after injury.
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Affiliation(s)
- Mengyao Rong
- Department of Internal Medicine, the Hospital of Xidian University, Xi'an Shaanxi, 710071, P.R.China
| | - Zhen Chang
- Department of Spinal Surgery, Honghui Hospital Affiliated to Medical School of Xi'an Jiaotong University, Xi'an Shaanxi, 710054, P.R.China
| | - Jiawei Ou
- Department of Spinal Surgery, Honghui Hospital Affiliated to Medical School of Xi'an Jiaotong University, Xi'an Shaanxi, 710054, P.R.China
| | - Songchuan Zhao
- Department of Spinal Surgery, Honghui Hospital Affiliated to Medical School of Xi'an Jiaotong University, Xi'an Shaanxi, 710054, P.R.China
| | - Wen Zeng
- Department of Spinal Surgery, Honghui Hospital Affiliated to Medical School of Xi'an Jiaotong University, Xi'an Shaanxi, 710054, P.R.China
| | - Qi Liu
- Department of Neurosurgery, the First Hospital of Yulin, Yulin Shaanxi, 718000,
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32
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Wijaya A, Maruf A, Wu W, Wang G. Recent advances in micro- and nano-bubbles for atherosclerosis applications. Biomater Sci 2020; 8:4920-4939. [DOI: 10.1039/d0bm00762e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Micro- and nano-bubbles have been developed as powerful multimodal theranostic agents for atherosclerosis treatment.
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Affiliation(s)
- Andy Wijaya
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| | - Ali Maruf
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| | - Wei Wu
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
| | - Guixue Wang
- Key Laboratory for Biorheological Science and Technology of Ministry of Education
- State and Local Joint Engineering Laboratory for Vascular Implants
- Bioengineering College
- Faculty of Medicine
- Chongqing University
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33
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Liu N, Fan M. Protective functions of salvianolic acid B in PC-12 cells against hydrogen peroxide-triggered damage by mediation of microRNA-26a. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:4030-4037. [PMID: 31603005 DOI: 10.1080/21691401.2019.1673766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Niansheng Liu
- Department of Traumatology, North Medical District of Linyi People’s Hospital, Linyi, PR China
| | - Mingfu Fan
- Department of Spinal Surgery, North Medical District of Linyi People’s Hospital, Linyi, PR China
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34
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Andrews LE, Chan MH, Liu RS. Nano-lipospheres as acoustically active ultrasound contrast agents: evolving tumor imaging and therapy technique. NANOTECHNOLOGY 2019; 30:182001. [PMID: 30645984 DOI: 10.1088/1361-6528/aafeb9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Applying nanobubbles (NBs) for contrast-enhanced ultrasound imaging has received increased attention. NBs are biocompatible, multifunctional, theranostic agents. Their properties of high echogenicity and stability create an agent suitable for ultrasonography diagnosis. Their favorable properties of size, in vivo stability, and ease of modification are being exploited to implement a theranostic platform for cancer treatment. The considerable development offers the potential to overcome drug resistance and adverse side effects that are associated with traditional chemotherapy. This review outlines the principles of ultrasonography and angiogenesis. Microbubbles and micelles are also discussed to underline the superior capabilities of NBs for the application. NBs could passively accumulate to tumor tissue by enhanced permeability and retention effect. In addition, it can also achieve the active transportation by surface modification. Active targeting modalities and stimuli-responsive drug delivery modifications generate a therapeutic vehicle. The cytotoxicity of NBs formulations, multimodal imaging capability, active targeting mechanisms, and drug delivery methods are highlighted to confirm the NB as a vehicle for targeted treatment and enhanced ultrasound imaging.
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Affiliation(s)
- Laura Emma Andrews
- Department of Chemistry, National Taiwan University, Taiwan. School of Chemistry, The University of Edinburgh, United Kingdom
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35
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Liu Z, Zhang J, Tian Y, Zhang L, Han X, Wang Q, Cheng W. Targeted delivery of reduced graphene oxide nanosheets using multifunctional ultrasound nanobubbles for visualization and enhanced photothermal therapy. Int J Nanomedicine 2018; 13:7859-7872. [PMID: 30538464 PMCID: PMC6255282 DOI: 10.2147/ijn.s181268] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Ultrasound molecular imaging as a promising strategy, which involved the use of molecularly targeted contrast agents, combined the advantages of contrast-enhanced ultrasound with the photothermal effect of reduced graphene oxide (rGO). Methods and results The heparin sulfate proteoglycan glypican-3 (GPC3) is a potential molecular target for hepatocellular carcinoma (HCC). In this study, we covalently linked biotinylated GPC3 antibody to PEGylated nano-rGO to obtain GPC3-modified rGO-PEG (rGO-GPC3), and then combined rGO-GPC3 with avidinylated nanobubbles (NBs) using biotin-avidin system to prepare NBs-GPC3-rGO with photothermal effect and dispersibility, solubility in physiological environment. The average size of NBs-GPC3-rGO complex was 700.4±52.9 nm due to the polymerization of biotin-avidin system. Scanning electron microscope (SEM) showed NBs-GPC3-rGO attached to human hepatocellular carcinoma HepG2 cell. The ultrasound-targeted nanobubble destruction (UTND) technology make use of the physical energy of ultrasound exposure for the improvement of rGO delivery. Compared with other control groups, the highest nanobubble destruction efficiency of NBs-GPC3-rGO was attributed to the dissection effect of rGO on UTND. This is a positive feedback effect that leads to an increase in the concentration of rGO around the HepG2 cell. So NBs-GPC3-rGO using UTND and near-infrared (NIR) irradiation resulted in cell viability within 24 h, 48 h, 72 h lower than other treatment groups. Conclusion This work established NBs-GPC3-rGO as an ultrasonic photothermal agent due to its suitable size, imaging capability, photothermal efficiency for visual photothermal therapy in vitro.
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Affiliation(s)
- Zhao Liu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang District, Harbin 150080, China,
| | - Jia Zhang
- Key Laboratory of Microsystems and Microstructure Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150080, China
| | - Yuhang Tian
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang District, Harbin 150080, China,
| | - Lei Zhang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang District, Harbin 150080, China,
| | - Xue Han
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang District, Harbin 150080, China,
| | - Qiucheng Wang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang District, Harbin 150080, China,
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Nangang District, Harbin 150080, China,
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Zhou JX, Liu YJ, Chen X, Zhang X, Xu J, Yang K, Wang D, Lin S, Ye J. Low-Intensity Pulsed Ultrasound Protects Retinal Ganglion Cell From Optic Nerve Injury Induced Apoptosis via Yes Associated Protein. Front Cell Neurosci 2018; 12:160. [PMID: 29950973 PMCID: PMC6008403 DOI: 10.3389/fncel.2018.00160] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 05/25/2018] [Indexed: 01/08/2023] Open
Abstract
Background: Low-intensity pulsed ultrasound (LIPUS) has been used in clinical studies. But little is known about its effects on the central nervous system (CNS), or its mechanism of action. Retinal ganglion cells (RGCs) are CNS neuronal cells that can be utilized as a classic model system to evaluate outcomes of LIPUS protection from external trauma-induced retinal injury. In this study, we aim to: (1) determine the pulse energy and the capability of LIPUS in RGC viability, (2) ascertain the protective role of LIPUS in optic nerve (ON) crush-induced retinal injury, and 3) explore the cellular mechanisms of RGC apoptosis prevention by LIPUS. Methods: An ON crush model was set up to induce RGC death. LIPUS was used to treat mice eyes daily, and the retina samples were dissected for immunostaining and Western blot. The expression of yes-associated protein (YAP) and apoptosis-related proteins was detected by immunostaining and Western blot in vitro and in vivo. Apoptosis of RGCs was evaluated by TUNEL staining, the survival of RGCs and retained axons were labeled by Fluoro-gold and Tuj1 antibody, respectively. Rotenone was used to set up an in vitro cellular degenerative model and siYAP was used to interfering the expression of YAP to detect the LIPUS protective function. Results: LIPUS protected RGC from loss and apoptosis in vivo and in vitro. The ratio of cleaved/pro-caspase3 also decreased significantly under LIPUS treatment. As a cellular mechanical sensor, YAP expression increased and YAP translocated to nucleus in LIPUS stimulation group, however, phospho-YAP was found to be decreased. When YAP was inhibited, the LIPUS could not protect RGC from caspase3-dependent apoptosis. Conclusion: LIPUS prevented RGCs from apoptosis in an ON crush model and in vitro cellular degenerative model, which indicates a potential treatment for further traumatic ON injury. The mechanism of protection is dependent on YAP activation and correlated with caspase-3 signaling.
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Affiliation(s)
- Jia-Xing Zhou
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Yun-Jia Liu
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Xi Chen
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Xi Zhang
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jie Xu
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Ke Yang
- Chongqing Engineering Technical Center Stem Cell Therapy, Children's Hospital of Chongqing Medical University, Chongqing, China
| | - Dong Wang
- Department of Ultrasound, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Ultrasound Molecular Imaging, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Sen Lin
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
| | - Jian Ye
- Department of Ophthalmology, Research Institute of Surgery, Daping Hospital, Army Medical University, Chongqing, China
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Lafond M, Watanabe A, Yoshizawa S, Umemura SI, Tachibana K. Cavitation-threshold Determination and Rheological-parameters Estimation of Albumin-stabilized Nanobubbles. Sci Rep 2018; 8:7472. [PMID: 29748624 PMCID: PMC5945894 DOI: 10.1038/s41598-018-25913-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Accepted: 04/25/2018] [Indexed: 12/24/2022] Open
Abstract
Nanobubbles (NBs) are of high interest for ultrasound (US) imaging as contrast agents and therapy as cavitation nuclei. Because of their instability (Laplace pressure bubble catastrophe) and low sensitivity to US, reducing the size of commonly used microbubbles to submicron-size is not trivial. We introduce stabilized NBs in the 100-250-nm size range, manufactured by agitating human serum albumin and perfluoro-propane. These NBs were exposed to 3.34- and 5.39-MHz US, and their sensitivity to US was proven by detecting inertial cavitation. The cavitation-threshold information was used to run a numerical parametric study based on a modified Rayleigh-Plesset equation (with a Newtonian rheology model). The determined values of surface tension ranged from 0 N/m to 0.06 N/m. The corresponding values of dilatational viscosity ranged from 5.10-10 Ns/m to 1.10-9 Ns/m. These parameters were reported to be 0.6 N/m and 1.10-8 Ns/m for the reference microbubble contrast agent. This result suggests the possibility of using albumin as a stabilizer for the nanobubbles that could be maintained in circulation and presenting satisfying US sensitivity, even in the 3-5-MHz range.
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Affiliation(s)
- Maxime Lafond
- Graduate School of Biomedical Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan.
| | - Akiko Watanabe
- Department of Anatomy, Fukuoka University School of Medicine, Fukuoka, Japan
| | - Shin Yoshizawa
- Graduate School of Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | - Shin-Ichiro Umemura
- Graduate School of Biomedical Engineering, Tohoku University, Sendai, Miyagi, 980-8579, Japan
| | - Katsuro Tachibana
- Department of Anatomy, Fukuoka University School of Medicine, Fukuoka, Japan
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Song Z, Ye Y, Zhang Z, Shen J, Hu Z, Wang Z, Zheng J. Noninvasive, targeted gene therapy for acute spinal cord injury using LIFU-mediated BDNF-loaded cationic nanobubble destruction. Biochem Biophys Res Commun 2018; 496:911-920. [PMID: 29360450 DOI: 10.1016/j.bbrc.2018.01.123] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Accepted: 01/19/2018] [Indexed: 12/21/2022]
Abstract
Various gene delivery systems have been widely studied for the acute spinal cord injury (SCI) treatment. In the present study, a novel type of brain-derived neurotrophic factor (BDNF)-loaded cationic nanobubbles (CNBs) conjugated with MAP-2 antibody (mAbMAP-2/BDNF/CNBs) was prepared to provide low-intensity focused ultrasound (LIFU)-targeted gene therapy. In vitro experiments, the ultrasound-targeted tranfection to BDNF overexpressioin in neurons and efficiently inhibition neuronal apoptosis have been demonstrated, and the elaborately designed mAbMAP-2/BDNF/CNBs can specifically target to the neurons. Furthermore, in a acute SCI rat model, LIFU-mediated mAbMAP-2/BDNF/CNBs transfection significantly increased BDNF expression, attenuated histological injury, decreased neurons loss, inhibited neuronal apoptosis in injured spinal cords, and increased BBB scores in SCI rats. LIFU-mediated mAbMAP-2/BDNF/CNBs destruction significantly increase transfection efficiency of BDNF gene both in vitro and in vivo, and has a significant neuroprotective effect on the injured spinal cord. Therefore, the combination of LIFU irradiation and gene therapy through mAbMAP-2/BDNF/CNBs can be considered as a novel non-invasive and targeted treatment for gene therapy of SCI.
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Affiliation(s)
- Zhaojun Song
- Department of Orthopaedics, Suining Central Hospital, Sichuan, People's Republic of China
| | - Yongjie Ye
- Department of Orthopaedics, Suining Central Hospital, Sichuan, People's Republic of China
| | - Zhi Zhang
- Department of Orthopaedics, Suining Central Hospital, Sichuan, People's Republic of China.
| | - Jieliang Shen
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Zhenming Hu
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
| | - Zhigang Wang
- Institution of Ultrasound Imaging, The Second Affiliated Hospital, Chongqing Medical University, Chongqing, People's Republic of China
| | - Jiazhuang Zheng
- Department of Orthopaedics, Suining Central Hospital, Sichuan, People's Republic of China
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Refaat MM, Zickri MB, Fares AE, Gabr H, El-Jaafary SI, Mahmoud BE, Madbouly MA, Abdelfadel MA, Hammad AM, Farghali HAM. Enhancement of neural regeneration after spinal cord injury using muscle graft in experimental dogs. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:9330-9340. [PMID: 31966805 PMCID: PMC6965910] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 08/17/2017] [Indexed: 06/10/2023]
Abstract
AIMS Spinal cord injuries (SCIs) can cause severe disability or death. The principal treatments for traumatic SCI include surgical stabilization and decompression. Using muscle as a scaffold is a new approach. The aim of this work is to evaluate the clinical efficacy of muscle graft as a scaffold for the growing axons organizing their growth, preventing gliosis in the damaged area and enhancing neural recovery in canine model of traumatic spinal cord injury. METHODS 14 dogs were divided into group I (Control group) 4 control dogs subjected to Sham operation, group II (Trauma control group) 5 dogs subjected to dorsal laminectomy with excision of 1 cm segment of the spinal cord and group III (Muscle graft group) 5 dogs subjected to dorsal laminectomy then muscle graft was taken from the longissimus thoraces and inserted into the spinal cord gap. The animals of all groups were euthanatized after 8 weeks. Olby and modified Tarlov scores were used to clinically evaluate the therapeutic effects. Spinal cord specimens were subjected to histological, morphometric and statistical studies. RESULTS Olby and modified Tarlov scores revealed significant clinical improvement in the muscle graft group. Histological sections showed overgrowth of axons on the muscle graft and the sections started to organize as central gray matter and peripheral white matter. CD44 & CD105 stains were positive for endogenous stem cells. CONCLUSIONS This study proved the clinical efficacy of muscle grafting as a tool for induction of neuroregeneration after traumatic spinal cord injury.
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Affiliation(s)
- Mohamed M Refaat
- Department of Neurosurgery, Faculty of Medicine, Benisuef UniversityEgypt
| | - Maha Baligh Zickri
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Cairo UniversityEgypt
| | - Amal Elham Fares
- Department of Medical Histology and Cell Biology, Faculty of Medicine, Cairo UniversityEgypt
| | - Hala Gabr
- Department of Clinical Pathology, Faculty of Medicine, Cairo UniversityEgypt
| | | | | | | | | | | | - Haithem AM Farghali
- Surgery, Anesthesiology and Radiology Department, Faculty of Veterinary Medicine, Cairo UniversityEgypt
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Ding YM, Li YY, Wang C, Huang H, Zheng CC, Huang SH, Xuan Y, Sun XY, Zhang X. Nischarin-siRNA delivered by polyethylenimine-alginate nanoparticles accelerates motor function recovery after spinal cord injury. Neural Regen Res 2017; 12:1687-1694. [PMID: 29171434 PMCID: PMC5696850 DOI: 10.4103/1673-5374.217348] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
A previous study by our group found that inhibition of nischarin promotes neurite outgrowth and neuronal regeneration in Neuro-2a cells and primary cortical neurons. In recent years, more and more studies have shown that nanomaterials have good prospects in treatment of spinal cord injury. We proposed that small interfering RNA targeting nischarin (Nis-siRNA) delivered by polyethyleneimine-alginate (PEI-ALG) nanoparticles promoted motor function recovery in rats with spinal cord injury. Direct microinjection of 5 μL PEI-ALG/Nis-siRNA into the spinal cord lesion area of spinal cord injury rats was performed. From day 7 after surgery, Basso, Beattie and Bresnahan score was significantly higher in rats from the PEI-ALG/Nis-siRNA group compared with the spinal cord injury group and PEI-ALG/Control-siRNA group. On day 21 after injection, hematoxylin-eosin staining showed that the necrotic area was reduced in the PEI-ALG/Nis-siRNA group. Immunohistochemistry and western blot assay results confirmed successful inhibition of nischarin expression and increased protein expression of growth-associated protein-43 in the PEI-ALG/Nis-siRNA group. These findings suggest that a complex of PEI-ALG nanoparticles and Nis-siRNA effectively suppresses nischarin expression, induces expression of growth-associated protein-43, and accelerates motor function recovery after spinal cord injury.
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Affiliation(s)
- Yue-Min Ding
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Yu-Ying Li
- Department of Physiology, School of Medicine, Quzhou College of Technology, Quzhou, Zhejiang Province, China
| | - Chu Wang
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Hao Huang
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Chen-Chen Zheng
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Shao-Han Huang
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Yang Xuan
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Xiao-Yi Sun
- Department of Pharmacy, Zhejiang University City College, Hangzhou, Zhejiang Province, China
| | - Xiong Zhang
- Department of Basic Medicine, College of Medicine, Zhejiang University, Hangzhou, Zhejiang Province, China
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