1
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Wang R, Li J. Noninvasive focused ultrasound-mediated delivery of rAAV9-EGFP vectors for neuronal targeting in rats. Neuroimage 2024; 294:120630. [PMID: 38740226 DOI: 10.1016/j.neuroimage.2024.120630] [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: 10/28/2023] [Revised: 03/09/2024] [Accepted: 04/30/2024] [Indexed: 05/16/2024] Open
Abstract
OBJECTIVE To evaluate the synergistic potential of Focused Ultrasound (FUS) in conjunction with microbubbles (MB) and recombinant adeno-associated virus serotype 9 (rAAV9) vectors for targeted gene delivery to neuronal cells in rats, optimizing gene expression conditions and assessing any adverse effects. METHODS The parameters for permeability enhancement of the rat's blood-brain barrier (BBB) were established using FUS+MB, with MRI scans and Evans Blue (EB) dye assisting in the evaluation. Rats underwent FUS-mediated transfection using rAAV9-Syn-EGFP vectors produced via a triple-transfection in HEK293T cells. Following this, the uptake and expression of GFP in targeted brain regions were evaluated using confocal fluorescence microscopy at various time intervals. Inflammatory responses post-FUS treatment were tracked by observing levels of GFAP, a marker for astrocytic activation, and TNF-α, a pro-inflammatory cytokine. Motor behavior effects post-intervention were gauged using the Rotarod test across multiple groups over a span of four weeks. RESULTS FUS+MB affected BBB permeability, with optimal results at 4 W for 200 s showing 85 % permeability and evident Gd-DTPA leakage. Settings beyond these resulted in tissue damage. Control groups exhibited a basal GFP expression of 2 % ± 0.5 %, whereas FUS+MB with rAAV-EGFP injections substantially increased GFP expression to about 67 % ± 6 % in targeted neurons. This GFP expression peaked at three weeks post-treatment and remained evident six months later. Following FUS treatment, both GFAP and TNF-α levels underwent fluctuations before eventually nearing their baseline values. The Rotarod test revealed no significant behavioral differences post-treatments among the groups. CONCLUSIONS Combining FUS+MB with rAAV offers an innovative approach to enhance therapeutic delivery to the central nervous system (CNS) by transiently adjusting BBB permeability.
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Affiliation(s)
- Rui Wang
- Department of Radiology, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China; Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, Chengdu, Sichuan, China.
| | - Jiayi Li
- Cancer Center, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, Sichuan, China
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2
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Zhu P, Simon I, Kokalari I, Kohane DS, Rwei AY. Miniaturized therapeutic systems for ultrasound-modulated drug delivery to the central and peripheral nervous system. Adv Drug Deliv Rev 2024; 208:115275. [PMID: 38442747 PMCID: PMC11031353 DOI: 10.1016/j.addr.2024.115275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/19/2024] [Accepted: 03/01/2024] [Indexed: 03/07/2024]
Abstract
Ultrasound is a promising technology to address challenges in drug delivery, including limited drug penetration across physiological barriers and ineffective targeting. Here we provide an overview of the significant advances made in recent years in overcoming technical and pharmacological barriers using ultrasound-assisted drug delivery to the central and peripheral nervous system. We commence by exploring the fundamental principles of ultrasound physics and its interaction with tissue. The mechanisms of ultrasonic-enhanced drug delivery are examined, as well as the relevant tissue barriers. We highlight drug transport through such tissue barriers utilizing insonation alone, in combination with ultrasound contrast agents (e.g., microbubbles), and through innovative particulate drug delivery systems. Furthermore, we review advances in systems and devices for providing therapeutic ultrasound, as their practicality and accessibility are crucial for clinical application.
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Affiliation(s)
- Pancheng Zhu
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, the Netherlands; State Key Laboratory of Mechanics and Control of Aerospace Structures, Nanjing University of Aeronautics & Astronautics, 210016, Nanjing, China; Department of Biomedical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
| | - Ignasi Simon
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, the Netherlands
| | - Ida Kokalari
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, the Netherlands
| | - Daniel S Kohane
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA.
| | - Alina Y Rwei
- Department of Chemical Engineering, Delft University of Technology, 2629 HZ, Delft, the Netherlands.
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3
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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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4
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Parks TV, Szczupak D, Choi SH, Schaeffer DJ. Noninvasive focal transgene delivery with viral neuronal tracers in the marmoset monkey. CELL REPORTS METHODS 2024; 4:100709. [PMID: 38359822 PMCID: PMC10921014 DOI: 10.1016/j.crmeth.2024.100709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/14/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024]
Abstract
We establish a reliable method for selectively delivering adeno-associated viral vectors (AAVs) across the blood-brain barrier (BBB) in the marmoset without the need for neurosurgical injection. We focally perturbed the BBB (∼1 × 2 mm) in area 8aD of the frontal cortex in four adult marmoset monkeys using low-intensity transcranial focused ultrasound aided by microbubbles. Within an hour of opening the BBB, either AAV2 or AAV9 was delivered systemically via tail-vein injection. In all four marmosets, fluorescence-encoded neurons were observed at the site of BBB perturbation, with AAV2 showing a sparse distribution of transduced neurons when compared to AAV9. The results are compared to direct intracortical injections of anterograde tracers into area 8aD and similar (albeit sparser) long-range connectivity was observed. With evidence of transduced neurons specific to the region of BBB opening as well as long-distance tracing, we establish a framework for focal noninvasive transgene delivery to the marmoset brain.
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Affiliation(s)
- T Vincenza Parks
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Diego Szczupak
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sang-Ho Choi
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - David J Schaeffer
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA.
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5
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Jin L, Mao Z. Living virus-based nanohybrids for biomedical applications. WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2024; 16:e1923. [PMID: 37619605 DOI: 10.1002/wnan.1923] [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: 02/23/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 08/26/2023]
Abstract
Living viruses characterized by distinctive biological functions including specific targeting, gene invasion, immune modulation, and so forth have been receiving intensive attention from researchers worldwide owing to their promising potential for producing numerous theranostic modalities against diverse pathological conditions. Nevertheless, concerns during applications, such as rapid immune clearance, altering immune activation modes, insufficient gene transduction efficiency, and so forth, highlight the crucial issues of excessive therapeutic doses and the associated biosafety risks. To address these concerns, synthetic nanomaterials featuring unique physical/chemical properties are frequently exploited as efficient drug delivery vehicles or treatments in biomedical domains. By constant endeavor, researchers nowadays can create adaptable living virus-based nanohybrids (LVN) that not only overcome the limitations of virotherapy, but also combine the benefits of natural substances and nanotechnology to produce novel and promising therapeutic and diagnostic agents. In this review, we discuss the fundamental physiochemical properties of the viruses, and briefly outline the basic construction methodologies of LVN. We then emphasize their distinct diagnostic and therapeutic performances for various diseases. Furthermore, we survey the foreseeable challenges and future perspectives in this interdisciplinary area to offer insights. This article is categorized under: Biology-Inspired Nanomaterials > Protein and Virus-Based Structures Therapeutic Approaches and Drug Discovery > Emerging Technologies.
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Affiliation(s)
- Lulu Jin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
| | - Zhengwei Mao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, China
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6
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Kofoed RH, Simpson EM, Hynynen K, Aubert I. Sonoselective delivery using ultrasound and microbubbles combined with intravenous rAAV9 CLDN5-GFP does not increase endothelial gene expression. Gene Ther 2023; 30:807-811. [PMID: 36781945 DOI: 10.1038/s41434-023-00389-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/16/2023] [Accepted: 01/31/2023] [Indexed: 02/15/2023]
Abstract
Transcranial ultrasound combined with intravenous microbubbles can be used to increase blood-brain barrier permeability or, at lower pressures, to mediate sonoselective gene delivery to endothelial cells. Previously, sonoselective gene delivery with plasmid-coated microbubbles as gene carriers resulted in transient transgene expression in the brain endothelium. We investigated the potential of recombinant adeno-associated virus 9 (rAAV9), a serotype known for its efficient transduction and long-term transgene expression, for sonoselective gene delivery to endothelial cells of the brain. We found that rAAV9 led to gene delivery to brain endothelial cells following intravenous administration at a dosage of 1 × 1011 GC/g. However, the sonoselective gene delivery approach with intravenous rAAV9, using the same parameters as previously used for plasmid delivery, did not increase transgene expression in brain endothelial cells targeted. These results suggest that intravenous rAAV9 are using mechanisms of entry into the cerebrovasculature that are not significantly influenced by sonoselective treatments known to facilitate endothelial cell entry of plasmids coated onto microbubbles.
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Affiliation(s)
- Rikke Hahn Kofoed
- 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.
| | - Elizabeth M Simpson
- Centre for Molecular Medicine and Therapeutics at British Columbia Children's Hospital, Department of Medical Genetics, The University of British Columbia, Vancouver, Canada
| | - Kullervo Hynynen
- Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Medical Biophysics, Temerty Faculty of Medicine, University of Toronto, 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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7
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Hang Z, Zhou L, Xing C, Wen Y, Du H. The blood-brain barrier, a key bridge to treat neurodegenerative diseases. Ageing Res Rev 2023; 91:102070. [PMID: 37704051 DOI: 10.1016/j.arr.2023.102070] [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: 06/09/2023] [Revised: 09/06/2023] [Accepted: 09/09/2023] [Indexed: 09/15/2023]
Abstract
As a highly selective and semi-permeable barrier that separates the circulating blood from the brain and central nervous system (CNS), the blood-brain barrier (BBB) plays a critical role in the onset and treatment of neurodegenerative diseases (NDs). To delay or reverse the NDs progression, the dysfunction of BBB should be improved to protect the brain from harmful substances. Simultaneously, a highly efficient drug delivery across the BBB is indispensable. Here, we summarized several methods to improve BBB dysfunction in NDs, including knocking out risk geneAPOE4, regulating circadian rhythms, restoring the gut microenvironment, and activating the Wnt/β-catenin signaling pathway. Then we discussed the advances in BBB penetration techniques, such as transient BBB opening, carrier-mediated drug delivery, and nasal administration, which facilitates drug delivery across the BBB. Furthermore, various in vivo and in vitro BBB models and research methods related to NDs are reviewed. Based on the current research progress, the treatment of NDs in the long term should prioritize the integrity of the BBB. However, a treatment approach that combines precise control of transient BBB permeability and non-invasive targeted BBB drug delivery holds profound significance in improving treatment effectiveness, safety, and clinical feasibility during drug therapy. This review involves the cross application of biology, materials science, imaging, engineering and other disciplines in the field of BBB, aiming to provide multi-dimensional research directions and clinical ideas for the treating NDs.
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Affiliation(s)
- Zhongci Hang
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China
| | - Liping Zhou
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China
| | - Cencan Xing
- Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China
| | - Yongqiang Wen
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Beijing Key Laboratory for Bioengineering and Sensing Technology, University of Science and Technology Beijing, Beijing 100083, China.
| | - Hongwu Du
- School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing 100083, China; Daxing Research Institute, University of Science and Technology Beijing, Beijing 100083, China.
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8
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Parks TV, Szuzupak D, Choi SH, Alikaya A, Mou Y, Silva AC, Schaeffer DJ. Noninvasive disruption of the blood-brain barrier in the marmoset monkey. Commun Biol 2023; 6:806. [PMID: 37532791 PMCID: PMC10397190 DOI: 10.1038/s42003-023-05185-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 07/26/2023] [Indexed: 08/04/2023] Open
Abstract
The common marmoset monkey (Callithrix jacchus) is a species of rising prominence in the neurosciences due to its small size, ease of handling, fast breeding, and its shared functional and structural brain characteristics with Old World primates. With increasing attention on modeling human brain diseases in marmosets, understanding how to deliver therapeutic or neurotropic agents to the marmoset brain noninvasively is of great preclinical importance. In other species, including humans, transcranial focused ultrasound (tFUS) aided by intravenously injected microbubbles has proven to be a transient, reliable, and safe method for disrupting the blood-brain barrier (BBB), allowing the focal passage of therapeutic agents that do not otherwise readily traverse the tight endothelial junctions of the BBB. The critical gap that we address here is to document parameters to disrupt the BBB reliably and safely in marmosets using tFUS. By integrating our marmoset brain atlases and the use of a marmoset-specific stereotactic targeting system, we conduct a series of systematic transcranial sonication experiments in nine marmosets. We demonstrate the effects of center frequency, acoustic pressure, burst period, and duration, establish a minimum microbubble dose, estimate microbubble clearance time, and estimate the duration that the BBB remains open to passage. Successful BBB disruption is reported in vivo with MRI-based contrast agents, as well as Evans blue staining assessed ex vivo. Histology (Hematoxylin and Eosin staining) and immunohistochemistry indicate that the BBB can be safely and reliably opened with the parameters derived from these experiments. The series of experiments presented here establish methods for safely, reproducibly, and focally perturbing the BBB using tFUS in the common marmoset monkey that can serve as a basis for noninvasive delivery of therapeutic or neurotropic agents.
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Affiliation(s)
- T Vincenza Parks
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Diego Szuzupak
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Sang-Ho Choi
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Aydin Alikaya
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yongshan Mou
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Afonso C Silva
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA
| | - David J Schaeffer
- Department of Neurobiology, University of Pittsburgh, Pittsburgh, PA, USA.
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9
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Nowak I, Madej M, Secemska J, Sarna R, Strzalka-Mrozik B. Virus-Based Biological Systems as Next-Generation Carriers for the Therapy of Central Nervous System Diseases. Pharmaceutics 2023; 15:1931. [PMID: 37514117 PMCID: PMC10384784 DOI: 10.3390/pharmaceutics15071931] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/29/2023] [Accepted: 07/10/2023] [Indexed: 07/30/2023] Open
Abstract
Central nervous system (CNS) diseases are currently a major challenge in medicine. One reason is the presence of the blood-brain barrier, which is a significant limitation for currently used medicinal substances that are characterized by a high molecular weight and a short half-life. Despite the application of nanotechnology, there is still the problem of targeting and the occurrence of systemic toxicity. Viral vectors and virus-like particles (VLPs) may provide a promising solution to these challenges. Their small size, biocompatibility, ability to carry medicinal substances, and specific targeting of neural cells make them useful in research when formulating a new generation of biological carriers. Additionally, the possibility of genetic modification has the potential for gene therapy. Among the most promising viral vectors are adeno-associated viruses, adenoviruses, and retroviruses. This is due to their natural tropism to neural cells, as well as the possibility of genetic and surface modification. Moreover, VLPs that are devoid of infectious genetic material in favor of increasing capacity are also leading the way for research on new drug delivery systems. The aim of this study is to review the most recent reports on the use of viral vectors and VLPs in the treatment of selected CNS diseases.
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Affiliation(s)
- Ilona Nowak
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland
| | - Marcel Madej
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland
| | - Julia Secemska
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland
| | - Robert Sarna
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland
| | - Barbara Strzalka-Mrozik
- Department of Molecular Biology, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, 40-055 Katowice, Poland
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10
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Wang T, Lei H, Li X, Yang N, Ma C, Li G, Gao X, Ge J, Liu Z, Cheng L, Chen G. Magnetic Targeting Nanocarriers Combined with Focusing Ultrasound for Enhanced Intracerebral Hemorrhage Therapy. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206982. [PMID: 36703527 DOI: 10.1002/smll.202206982] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/27/2022] [Indexed: 06/18/2023]
Abstract
Intracerebral hemorrhage (ICH) remains a significant cause of morbidity and mortality around the world, and surgery is still the most direct and effective way to remove ICH. However, the potential risks brought by surgery, such as normal brain tissue damage, post-operative infection, and difficulty in removing deep hematoma, are still the main problems in the surgical treatment of ICH. Activation of the peroxisome proliferator-activated receptor gamma (PPARγ) is reported to show a good therapeutic effect in hematoma clearance. Herein, a magnetic targeting nanocarrier loaded with a PPARγ agonist (15d-PGJ2-MNPs) is synthesized, which could be magnetically targeted and enriched in the area of the hematoma after intravenous injection. Subsequent application of focusing ultrasound (FUS) could enhance drug diffusion, which activates the PPARγ receptors on macrophages around the hematoma for better hematoma clearance. The 15d-PGJ2-MNP treatment alleviates brain injury, accelerates hematoma clearance, attenuates neuroinflammation, reduces brain edema and significantly improves the deficits in sensory and motor function and spatial learning ability in the ICH mouse model. This work proposes an effective magnetic targeting plus FUS method to treat ICH, highlighting its great potential in the treatment of hemorrhagic stroke.
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Affiliation(s)
- Tianyi Wang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China
| | - Huali Lei
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China
| | - Nailin Yang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Cheng Ma
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China
| | - Guangqiang Li
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Xiang Gao
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Jun Ge
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Zhuang Liu
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Liang Cheng
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu Province, 215006, China
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11
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Dasgupta A, Sun T, Palomba R, Rama E, Zhang Y, Power C, Moeckel D, Liu M, Sarode A, Weiler M, Motta A, Porte C, Magnuska Z, Said Elshafei A, Barmin R, Graham A, McClelland A, Rommel D, Stickeler E, Kiessling F, Pallares RM, De Laporte L, Decuzzi P, McDannold N, Mitragotri S, Lammers T. Nonspherical ultrasound microbubbles. Proc Natl Acad Sci U S A 2023; 120:e2218847120. [PMID: 36940339 PMCID: PMC10068850 DOI: 10.1073/pnas.2218847120] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 02/22/2023] [Indexed: 03/22/2023] Open
Abstract
Surface tension provides microbubbles (MB) with a perfect spherical shape. Here, we demonstrate that MB can be engineered to be nonspherical, endowing them with unique features for biomedical applications. Anisotropic MB were generated via one-dimensionally stretching spherical poly(butyl cyanoacrylate) MB above their glass transition temperature. Compared to their spherical counterparts, nonspherical polymeric MB displayed superior performance in multiple ways, including i) increased margination behavior in blood vessel-like flow chambers, ii) reduced macrophage uptake in vitro, iii) prolonged circulation time in vivo, and iv) enhanced blood-brain barrier (BBB) permeation in vivo upon combination with transcranial focused ultrasound (FUS). Our studies identify shape as a design parameter in the MB landscape, and they provide a rational and robust framework for further exploring the application of anisotropic MB for ultrasound-enhanced drug delivery and imaging applications.
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Affiliation(s)
- Anshuman Dasgupta
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02115
| | - Tao Sun
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02115
- Focused Ultrasound Laboratory, Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA02115
| | - Roberto Palomba
- Laboratory of Nanotechnology for Precision Medicine, Istituto Italiano di Tecnologia, 16163Genova, Italy
| | - Elena Rama
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Yongzhi Zhang
- Focused Ultrasound Laboratory, Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA02115
| | - Chanikarn Power
- Focused Ultrasound Laboratory, Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA02115
| | - Diana Moeckel
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Mengjiao Liu
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Apoorva Sarode
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138
| | - Marek Weiler
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Alessandro Motta
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Céline Porte
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Zuzanna Magnuska
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Asmaa Said Elshafei
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Roman Barmin
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Adam Graham
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138
| | - Arthur McClelland
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138
| | - Dirk Rommel
- DWI−Leibniz Institute for Interactive Materials, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, Polymeric Biomaterials, Rheinisch-Westfälische Technische Hochschule University Aachen, 52074Aachen, Germany
| | - Elmar Stickeler
- Department of Obstetrics and Gynecology, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Fabian Kiessling
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Roger M. Pallares
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Laura De Laporte
- DWI−Leibniz Institute for Interactive Materials, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, Polymeric Biomaterials, Rheinisch-Westfälische Technische Hochschule University Aachen, 52074Aachen, Germany
- Advanced Materials for Biomedicine, Institute of Applied Medical Engineering, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
| | - Paolo Decuzzi
- Laboratory of Nanotechnology for Precision Medicine, Istituto Italiano di Tecnologia, 16163Genova, Italy
| | - Nathan McDannold
- Focused Ultrasound Laboratory, Department of Radiology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA02115
| | - Samir Mitragotri
- John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA02138
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA02115
| | - Twan Lammers
- Institute for Experimental Molecular Imaging, Medical Faculty, Rheinisch-Westfälische Technische Hochschule Aachen University, 52074Aachen, Germany
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12
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Preclinical Research on Focused Ultrasound-Mediated Blood-Brain Barrier Opening for Neurological Disorders: A Review. Neurol Int 2023; 15:285-300. [PMID: 36810473 PMCID: PMC9944161 DOI: 10.3390/neurolint15010018] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/02/2023] [Accepted: 02/10/2023] [Indexed: 02/17/2023] Open
Abstract
Several therapeutic agents for neurological disorders are usually not delivered to the brain owing to the presence of the blood-brain barrier (BBB), a special structure present in the central nervous system (CNS). Focused ultrasound (FUS) combined with microbubbles can reversibly and temporarily open the BBB, enabling the application of various therapeutic agents in patients with neurological disorders. In the past 20 years, many preclinical studies on drug delivery through FUS-mediated BBB opening have been conducted, and the use of this method in clinical applications has recently gained popularity. As the clinical application of FUS-mediated BBB opening expands, it is crucial to understand the molecular and cellular effects of FUS-induced microenvironmental changes in the brain so that the efficacy of treatment can be ensured, and new treatment strategies established. This review describes the latest research trends in FUS-mediated BBB opening, including the biological effects and applications in representative neurological disorders, and suggests future directions.
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13
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Zhong YX, Liao JC, Liu X, Tian H, Deng LR, Long L. Low intensity focused ultrasound: a new prospect for the treatment of Parkinson's disease. Ann Med 2023; 55:2251145. [PMID: 37634059 PMCID: PMC10461511 DOI: 10.1080/07853890.2023.2251145] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/17/2023] [Accepted: 08/20/2023] [Indexed: 08/28/2023] Open
Abstract
Background: As a chronic and progressive neurodegenerative disease, Parkinson's disease (PD) still lacks effective and safe targeted drug therapy. Low-intensity focused ultrasound (LIFU), a new method to stimulate the brain and open the blood-brain barrier (BBB), has been widely concerned by PD researchers due to its non-invasive characteristics.Methods: PubMed was searched for the past 10 years using the terms 'focused ultrasound', 'transcranial ultrasound', 'pulse ultrasound', and 'Parkinson's disease'. Relevant citations were selected from the authors' references. After excluding articles describing high-intensity focused ultrasound or non-Parkinson's disease applications, we found more than 100 full-text analyses for pooled analysis.Results: Current preclinical studies have shown that LIFU could improve PD motor symptoms by regulating microglia activation, increasing neurotrophic factors, reducing oxidative stress, and promoting nerve repair and regeneration, while LIFU combined with microbubbles (MBs) can promote drugs to cross the BBB, which may become a new direction of PD treatment. Therefore, finding an efficient drug carrier system is the top priority of applying LIFU with MBs to deliver drugs.Conclusions: This article aims to review neuro-modulatory effect of LIFU and the possible biophysical mechanism in the treatment of PD, summarize the latest progress in delivering vehicles with MBs, and discuss its advantages and limitations.
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Affiliation(s)
- Yun-Xiao Zhong
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Jin-Chi Liao
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xv Liu
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hao Tian
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Li-Ren Deng
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Ling Long
- Department of Neurology, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
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14
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Leong KX, Sharma D, Czarnota GJ. Focused Ultrasound and Ultrasound Stimulated Microbubbles in Radiotherapy Enhancement for Cancer Treatment. Technol Cancer Res Treat 2023; 22:15330338231176376. [PMID: 37192751 DOI: 10.1177/15330338231176376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023] Open
Abstract
Radiation therapy (RT) has been the standard of care for treating a multitude of cancer types. However, ionizing radiation has adverse short and long-term side effects which have resulted in treatment complications for decades. Thus, advances in enhancing the effects of RT have been the primary focus of research in radiation oncology. To avoid the usage of high radiation doses, treatment modalities such as high-intensity focused ultrasound can be implemented to reduce the radiation doses required to destroy cancer cells. In the past few years, the use of focused ultrasound (FUS) has demonstrated immense success in a number of applications as it capitalizes on spatial specificity. It allows ultrasound energy to be delivered to a targeted focal area without harming the surrounding tissue. FUS combined with RT has specifically demonstrated experimental evidence in its application resulting in enhanced cell death and tumor cure. Ultrasound-stimulated microbubbles have recently proved to be a novel way of enhancing RT as a radioenhancing agent on its own, or as a delivery vector for radiosensitizing agents such as oxygen. In this mini-review article, we discuss the bio-effects of FUS and RT in various preclinical models and highlight the applicability of this combined therapy in clinical settings.
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Affiliation(s)
- Kai Xuan Leong
- Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Deepa Sharma
- Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
| | - Gregory J Czarnota
- Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
- Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada
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