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Jamburidze A, Huerre A, Baresch D, Poulichet V, De Corato M, Garbin V. Nanoparticle-Coated Microbubbles for Combined Ultrasound Imaging and Drug Delivery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10087-10096. [PMID: 31033294 DOI: 10.1021/acs.langmuir.8b04008] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Biomedical microbubbles stabilized by a coating of magnetic or drug-containing nanoparticles show great potential for theranostics applications. Nanoparticle-coated microbubbles can be made to be stable, to be echogenic, and to release the cargo of drug-containing nanoparticles with an ultrasound trigger. This Article reviews the design principles of nanoparticle-coated microbubbles for ultrasound imaging and drug delivery, with a particular focus on the physical chemistry of nanoparticle-coated interfaces; the formation, stability, and dynamics of nanoparticle-coated bubbles; and the conditions for controlled nanoparticle release in ultrasound. The emerging understanding of the modes of nanoparticle expulsion and of the transport of expelled material by microbubble-induced flow is paving the way toward more efficient nanoparticle-mediated drug delivery. This Article highlights the knowledge gap that still remains to be addressed before we can control these phenomena.
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Affiliation(s)
- Akaki Jamburidze
- Department of Chemical Engineering , Imperial College London , London SW7 2AZ , United Kingdom
| | - Axel Huerre
- Department of Chemical Engineering , Imperial College London , London SW7 2AZ , United Kingdom
| | - Diego Baresch
- Department of Chemical Engineering , Imperial College London , London SW7 2AZ , United Kingdom
| | - Vincent Poulichet
- Department of Chemistry , Ecole Normale Superieure , 75005 Paris , France
| | - Marco De Corato
- Department of Chemical Engineering , Imperial College London , London SW7 2AZ , United Kingdom
| | - Valeria Garbin
- Department of Chemical Engineering , Imperial College London , London SW7 2AZ , United Kingdom
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52
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Burgess MT, Porter TM. Control of Acoustic Cavitation for Efficient Sonoporation with Phase-Shift Nanoemulsions. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:846-858. [PMID: 30638968 PMCID: PMC8859868 DOI: 10.1016/j.ultrasmedbio.2018.12.001] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 11/20/2018] [Accepted: 12/03/2018] [Indexed: 05/18/2023]
Abstract
Acoustic cavitation can be used to temporarily disrupt cell membranes for intracellular delivery of large biomolecules. Termed sonoporation, the ability of this technique for efficient intracellular delivery (i.e., >50% of initial cell population showing uptake) while maintaining cell viability (i.e., >50% of initial cell population viable) has proven to be very difficult. Here, we report that phase-shift nanoemulsions (PSNEs) function as inertial cavitation nuclei for improvement of sonoporation efficiency. The interplay between ultrasound frequency, resultant microbubble dynamics and sonoporation efficiency was investigated experimentally. Acoustic emissions from individual microbubbles nucleated from PSNEs were captured using a broadband passive cavitation detector during and after acoustic droplet vaporization with short pulses of ultrasound at 1, 2.5 and 5 MHz. Time domain features of the passive cavitation detector signals were analyzed to estimate the maximum size (Rmax) of the microbubbles using the Rayleigh collapse model. These results were then applied to sonoporation experiments to test if uptake efficiency is dependent on maximum microbubble size before inertial collapse. Results indicated that at the acoustic droplet vaporization threshold, Rmax was approximately 61.7 ± 5.2, 24.9 ± 2.8, and 12.4 ± 2.1 μm at 1, 2.5 and 5 MHz, respectively. Sonoporation efficiency increased at higher frequencies, with efficiencies of 39.5 ± 13.7%, 46.6 ± 3.28% and 66.8 ± 5.5% at 1, 2.5 and 5 MHz, respectively. Excessive cellular damage was seen at lower frequencies because of the erosive effects of highly energetic inertial cavitation. These results highlight the importance of acoustic cavitation control in determining the outcome of sonoporation experiments. In addition, PSNEs may serve as tailorable inertial cavitation nuclei for other therapeutic ultrasound applications.
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Affiliation(s)
- Mark T Burgess
- Department of Mechanical Engineering, Boston University, Boston, Massachusetts, USA
| | - Tyrone M Porter
- Department of Mechanical Engineering, Boston University, Boston, Massachusetts, USA; Department of Biomedical Engineering, Boston University, Boston, Massachusetts, USA.
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53
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Ultrasound-Targeted Microbubble Destruction (UTMD) for Localized Drug Delivery into Tumor Tissue. Ing Rech Biomed 2019. [DOI: 10.1016/j.irbm.2018.11.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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54
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Khedr MMS, Messaoudi W, Jonnalagadda US, Abdelmotelb AM, Glynne-Jones P, Hill M, Khakoo SI, Abu Hilal M. Generation of functional hepatocyte 3D discoids in an acoustofluidic bioreactor. BIOMICROFLUIDICS 2019; 13:014112. [PMID: 30867882 PMCID: PMC6404912 DOI: 10.1063/1.5082603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Accepted: 01/31/2019] [Indexed: 05/03/2023]
Abstract
Ultrasonic standing wave systems have previously been used for the generation of 3D constructs for a range of cell types. In the present study, we cultured cells from the human hepatoma Huh7 cell line in a Bulk Acoustic Wave field and studied their viability, their functions, and their response to the anti-cancer drug, 5 Fluorouracil (5FU). We found that cells grown in the acoustofluidic bioreactor (AFB) expressed no reduction in viability up to 6 h of exposure compared to those cultured in a conventional 2D system. In addition, constructs created in the AFB and subsequently cultured outside of it had improved functionality including higher albumin and urea production than 2D or pellet cultures. The viability of Huh7 cells grown in the ultrasound field to 5FU anti-cancer drug was comparable to that of cells cultured in the 2D system, showing rapid diffusion into the aggregate core. We have shown that AFB formed 3D cell constructs have improved functionality over the conventional 2D monolayer and could be a promising model for anti-cancer drug testing.
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Affiliation(s)
- Mogibelrahman M. S. Khedr
- Clinical and Experimental Sciences Academic Unit, Faculty of
Medicine, University of Southampton, Southampton SO16 6YD, United
Kingdom
- Faculty of Medicine, Suez Canal University,
Ismailia 41111, Egypt
| | - Walid Messaoudi
- Mechanical Engineering, Faculty of Engineering and Physical
Sciences, University of Southampton, Southampton SO17 1BJ, United
Kingdom
| | - Umesh S. Jonnalagadda
- Mechanical Engineering, Faculty of Engineering and Physical
Sciences, University of Southampton, Southampton SO17 1BJ, United
Kingdom
| | - Ahmed M. Abdelmotelb
- Clinical and Experimental Sciences Academic Unit, Faculty of
Medicine, University of Southampton, Southampton SO16 6YD, United
Kingdom
- Faculty of Medicine, Tanta University, Tanta
31527, Egypt
| | - Peter Glynne-Jones
- Mechanical Engineering, Faculty of Engineering and Physical
Sciences, University of Southampton, Southampton SO17 1BJ, United
Kingdom
| | - Martyn Hill
- Mechanical Engineering, Faculty of Engineering and Physical
Sciences, University of Southampton, Southampton SO17 1BJ, United
Kingdom
| | - Salim I. Khakoo
- Clinical and Experimental Sciences Academic Unit, Faculty of
Medicine, University of Southampton, Southampton SO16 6YD, United
Kingdom
- Southampton University Hospitals NHS Trust,
Southampton SO16 6YD, United Kingdom
| | - Mohammed Abu Hilal
- Clinical and Experimental Sciences Academic Unit, Faculty of
Medicine, University of Southampton, Southampton SO16 6YD, United
Kingdom
- Southampton University Hospitals NHS Trust,
Southampton SO16 6YD, United Kingdom
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55
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Snipstad S, Sulheim E, de Lange Davies C, Moonen C, Storm G, Kiessling F, Schmid R, Lammers T. Sonopermeation to improve drug delivery to tumors: from fundamental understanding to clinical translation. Expert Opin Drug Deliv 2018; 15:1249-1261. [PMID: 30415585 DOI: 10.1080/17425247.2018.1547279] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
INTRODUCTION Ultrasound in combination with microbubbles can make cells and tissues more accessible for drugs, thereby achieving improved therapeutic outcomes. In this review, we introduce the term 'sonopermeation', covering mechanisms such as pore formation (traditional sonoporation), as well as the opening of intercellular junctions, stimulated endocytosis/transcytosis, improved blood vessel perfusion and changes in the (tumor) microenvironment. Sonopermeation has gained a lot of interest in recent years, especially for delivering drugs through the otherwise impermeable blood-brain barrier, but also to tumors. AREAS COVERED In this review, we summarize various in vitro assays and in vivo setups that have been employed to unravel the fundamental mechanisms involved in ultrasound-enhanced drug delivery, as well as clinical trials that are ongoing in patients with brain, pancreatic, liver and breast cancer. We summarize the basic principles of sonopermeation, describe recent findings obtained in (pre-) clinical trials, and discuss future directions. EXPERT OPINION We suggest that an improved mechanistic understanding, and microbubbles and ultrasound equipment specialized for drug delivery (and not for imaging) are key aspects to create more effective treatment regimens by sonopermeation. Real-time feedback and tools to predict therapeutic outcome and which tumors/patients will benefit from sonopermeation-based interventions will be important to promote clinical translation.
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Affiliation(s)
- Sofie Snipstad
- a Department of Physics , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway.,b Department of Biotechnology and Nanomedicine , SINTEF AS , Trondheim , Norway.,c Cancer Clinic , St. Olavs Hospital , Trondheim , Norway
| | - Einar Sulheim
- a Department of Physics , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway.,b Department of Biotechnology and Nanomedicine , SINTEF AS , Trondheim , Norway.,c Cancer Clinic , St. Olavs Hospital , Trondheim , Norway
| | - Catharina de Lange Davies
- a Department of Physics , Norwegian University of Science and Technology (NTNU) , Trondheim , Norway
| | - Chrit Moonen
- d Imaging Division , University Medical Center , Utrecht , The Netherlands
| | - Gert Storm
- e Department of Pharmaceutics , Utrecht University , Utrecht , The Netherlands.,f Department of Targeted Therapeutics , University of Twente , Enschede , The Netherlands
| | - Fabian Kiessling
- g Institute for Experimental Molecular Imaging , RWTH Aachen University , Aachen , Germany
| | - Ruth Schmid
- b Department of Biotechnology and Nanomedicine , SINTEF AS , Trondheim , Norway
| | - Twan Lammers
- e Department of Pharmaceutics , Utrecht University , Utrecht , The Netherlands.,f Department of Targeted Therapeutics , University of Twente , Enschede , The Netherlands.,g Institute for Experimental Molecular Imaging , RWTH Aachen University , Aachen , Germany
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56
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Ramesan S, Rezk AR, Yeo LY. High frequency acoustic permeabilisation of drugs through tissue for localised mucosal delivery. LAB ON A CHIP 2018; 18:3272-3284. [PMID: 30225496 DOI: 10.1039/c8lc00355f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The majority of infectious diseases enter the body through mucosal membranes that line the ocular, nasal, oral, vaginal and rectal surfaces. As infections can be effectively prevented by instigating a local immune response in the immunocyte-rich regions of the mucosa, an efficacious route of vaccine administration is to directly target their delivery to these surfaces. It is nevertheless challenging to provide sufficient driving force to penetrate both the mucus lining as well as the epithelial barrier of the mucosal surfaces, which are designed to effectively keep foreign entities out, but not excessively such that the therapeutic agent penetrates deeper into the vascularised submucosal regions where they are mostly taken up by the systemic circulation, thus resulting in a far weaker immune response. In this work, we demonstrate the possibility of controllably localising and hence maximising the delivery of both small and large molecule model therapeutic agents in the mucosa of a porcine buccal model using high frequency acoustics. Unlike their low (kHz order) frequency bulk ultrasonic counterpart, these high frequency (>10 MHz) surface waves do not generate cavitation, which leads to large molecular penetration depths beyond the 100 μm order thick mucosal layer, and which has been known to cause considerable cellular/tissue damage and hence scarring. Through system parameters such as the acoustic irradiation frequency, power and exposure duration, we show that it is possible to tune the penetration depth such that over 95% of the delivered drug are localised within the mucosal layer, whilst preserving their structural integrity.
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Affiliation(s)
- Shwathy Ramesan
- Micro/Nanophysics Research Laboratory, RMIT University, Melbourne, VIC 3000, Australia.
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57
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Nan N, Si D, Hu G. Nanoscale cavitation in perforation of cellular membrane by shock-wave induced nanobubble collapse. J Chem Phys 2018; 149:074902. [DOI: 10.1063/1.5037643] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Nan Nan
- Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China
| | - Dongqing Si
- Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China
| | - Guohui Hu
- Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, China
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58
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Yu J, Chen Z, Yan F. Advances in mechanism studies on ultrasonic gene delivery at cellular level. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2018; 142:1-9. [PMID: 30031881 DOI: 10.1016/j.pbiomolbio.2018.07.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/15/2018] [Accepted: 07/19/2018] [Indexed: 01/23/2023]
Abstract
Ultrasound provides a means for intracellular gene delivery, contributing to a noninvasive and spatiotemporally controllable strategy suitable for clinical applications. Many studies have been done to provide mechanisms of ultrasound-mediated gene delivery at the cellular level. This review summarizes the studies on the important aspects of the mechanisms, providing an overview of recent progress in cellular experiment of ultrasound-mediated gene delivery.
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Affiliation(s)
- Jinsui Yu
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, PR China
| | - Zhiyi Chen
- Department of Ultrasound Medicine, Laboratory of Ultrasound Molecular Imaging, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510150, PR China.
| | - Fei Yan
- Paul C. Lauterbur Research Center for Biomedical Imaging, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, PR China.
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59
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Wrede AH, Shah A, McNamara MC, Montazami R, Hashemi NN. Controlled positioning of microbubbles and induced cavitation using a dual-frequency transducer and microfiber adhesion techniques. ULTRASONICS SONOCHEMISTRY 2018; 43:114-119. [PMID: 29555266 DOI: 10.1016/j.ultsonch.2018.01.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2017] [Revised: 01/04/2018] [Accepted: 01/04/2018] [Indexed: 06/08/2023]
Abstract
We report a study on two methods that enable spatial control and induced cavitation on targeted microbubbles (MBs). Cavitation is known to be present in many situations throughout nature. This phenomena has been proven to have the energy to erode alloys, like steel, in propellers and turbines. It is recently theorized that cavitation occurs inside the skull during a traumatic-brain injury (TBI) situation. Controlled cavitation methods could help better understand TBIs and explain how neurons respond at moments of trauma. Both of our approaches involve an ultrasonic transducer and bio-compatible Polycaprolactone (PCL) microfibers. These methods are reproducible as well as affordable, providing more control and efficiency compared to previous techniques found in literature. We specifically model three-dimensional spatial control of individual MBs using a 1.6 MHz transducer. Using a 100 kHz transducer, we also illustrate induced cavitation on an individual MB that is adhered to the surface of a PCL microfiber. The goal of future studies will involve characterization of neuronal response to cavitation and seek to unmask its linkage with TBIs.
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Affiliation(s)
- Alex H Wrede
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA
| | - Aarthy Shah
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA
| | - Marilyn C McNamara
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA
| | - Reza Montazami
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; Center for Advanced Host Defense Immunobiotics and Translational Comparative Medicine, Iowa State University, Ames, IA 50011, USA
| | - Nicole N Hashemi
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50011, USA; Center for Advanced Host Defense Immunobiotics and Translational Comparative Medicine, Iowa State University, Ames, IA 50011, USA.
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60
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Khayamian MA, Baniassadi M, Abdolahad M. Monitoring the effect of sonoporation on the cells using electrochemical approach. ULTRASONICS SONOCHEMISTRY 2018; 41:619-625. [PMID: 29137794 DOI: 10.1016/j.ultsonch.2017.10.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 10/28/2017] [Accepted: 10/29/2017] [Indexed: 06/07/2023]
Abstract
Sonoporation is applied to enhance the permeability of the cell to bioactive materials by employing the acoustic cavitation of microbubbles. This phenomena would be helpful in molecular biology, delivery of large molecules into the cells and gene therapy. Many methods have been applied to monitor the biological effects and trace of sonoporation on the cells such as scanning/transmission electron microscopy, confocal imaging and flow cytometry. Here, we monitored the effect of sonoporation on the cells using electrochemical method with an integrated three electrode system. Electrochemical responses of stimulated cells, compared to flow cytometry and electron microscopy results, presented different patterns of sonoporation in the cells detectable by cyclic voltammetry. In addition, confocal microscopy from actin stress fibers and young's modulus measured by AFM revealed the correlation of cell mechanics and amount of induced sonopores in the cells. This method could be applied as a new trend in cellular mechanochemical studies.
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Affiliation(s)
- Mohammad Ali Khayamian
- Nano Electronic Center of Excellence, Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, College of Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran; School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran; Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, College of Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran
| | - Majid Baniassadi
- School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran
| | - Mohammad Abdolahad
- Nano Electronic Center of Excellence, Nano Bio Electronic Devices Lab, School of Electrical and Computer Engineering, College of Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran; Nano Electronic Center of Excellence, Thin Film and Nanoelectronic Lab, School of Electrical and Computer Engineering, College of Engineering, University of Tehran, P.O. Box 14395/515, Tehran, Iran.
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61
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Myers R, Grundy M, Rowe C, Coviello CM, Bau L, Erbs P, Foloppe J, Balloul JM, Story C, Coussios CC, Carlisle R. Ultrasound-mediated cavitation does not decrease the activity of small molecule, antibody or viral-based medicines. Int J Nanomedicine 2018; 13:337-349. [PMID: 29391793 PMCID: PMC5768183 DOI: 10.2147/ijn.s141557] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The treatment of cancer using nanomedicines is limited by the poor penetration of these potentially powerful agents into and throughout solid tumors. Externally controlled mechanical stimuli, such as the generation of cavitation-induced microstreaming using ultrasound (US), can provide a means of improving nanomedicine delivery. Notably, it has been demonstrated that by focusing, monitoring and controlling the US exposure, delivery can be achieved without damage to surrounding tissue or vasculature. However, there is a risk that such stimuli may disrupt the structure and thereby diminish the activity of the delivered drugs, especially complex antibody and viral-based nanomedicines. In this study, we characterize the impact of cavitation on four different agents, doxorubicin (Dox), cetuximab, adenovirus (Ad) and vaccinia virus (VV), representing a scale of sophistication from a simple small-molecule drug to complex biological agents. To achieve tight regulation of the level and duration of cavitation exposure, a “cavitation test rig” was designed and built. The activity of each agent was assessed with and without exposure to a defined cavitation regime which has previously been shown to provide effective and safe delivery of agents to tumors in preclinical studies. The fluorescence profile of Dox remained unchanged after exposure to cavitation, and the efficacy of this drug in killing a cancer cell line remained the same. Similarly, the ability of cetuximab to bind its epidermal growth factor receptor target was not diminished following exposure to cavitation. The encoding of the reporter gene luciferase within the Ad and VV constructs tested here allowed the infectivity of these viruses to be easily quantified. Exposure to cavitation did not impact on the activity of either virus. These data provide compelling evidence that the US parameters used to safely and successfully delivery nanomedicines to tumors in preclinical models do not detrimentally impact on the structure or activity of these nanomedicines.
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Affiliation(s)
| | - Megan Grundy
- BUBBL, IBME, Department of Engineering Science, University of Oxford, Oxford, UK
| | | | | | - Luca Bau
- BUBBL, IBME, Department of Engineering Science, University of Oxford, Oxford, UK
| | | | | | | | | | | | - Robert Carlisle
- BUBBL, IBME, Department of Engineering Science, University of Oxford, Oxford, UK
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62
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Qin P, Han T, Yu ACH, Xu L. Mechanistic understanding the bioeffects of ultrasound-driven microbubbles to enhance macromolecule delivery. J Control Release 2018; 272:169-181. [PMID: 29305924 DOI: 10.1016/j.jconrel.2018.01.001] [Citation(s) in RCA: 110] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 01/02/2018] [Accepted: 01/03/2018] [Indexed: 12/17/2022]
Abstract
Ultrasound-driven microbubbles can trigger reversible membrane perforation (sonoporation), open interendothelial junctions and stimulate endocytosis, thereby providing a temporary and reversible time-window for the delivery of macromolecules across biological membranes and endothelial barriers. This time-window is related not only to cavitation events, but also to biological regulatory mechanisms. Mechanistic understanding of the interaction between cavitation events and cells and tissues, as well as the subsequent cellular and molecular responses will lead to new design strategies with improved efficacy and minimized side effects. Recent important progress on the spatiotemporal characteristics of sonoporation, cavitation-induced interendothelial gap and endocytosis, and the spatiotemporal bioeffects and the preliminary biological mechanisms in cavitation-enhanced permeability, has been made. On the basis of the summary of this research progress, this Review outlines the underlying bioeffects and the related biological regulatory mechanisms involved in cavitation-enhanced permeability; provides a critical commentary on the future tasks and directions in this field, including developing a standardized methodology to reveal mechanism-based bioeffects in depth, and designing biology-based treatment strategies to improve efficacy and safety. Such mechanistic understanding the bioeffects that contribute to cavitation-enhanced delivery will accelerate the translation of this approach to the clinic.
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Affiliation(s)
- Peng Qin
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai, China.
| | - Tao Han
- Department of Instrument Science and Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Alfred C H Yu
- Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada
| | - Lin Xu
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai, China
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63
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Cationic gas-filled microbubbles for ultrasound-based nucleic acids delivery. Biosci Rep 2017; 37:BSR20160619. [PMID: 29180378 PMCID: PMC5741830 DOI: 10.1042/bsr20160619] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2017] [Revised: 11/23/2017] [Accepted: 11/27/2017] [Indexed: 12/11/2022] Open
Abstract
The use of ultrasound has gained great interest for nucleic acids delivery. Ultrasound can reach deep tissues in non-invasive manner. The process of sonoporation is based on the use of low-frequency ultrasound combined with gas-filled microbubbles (MBs) allowing an improved delivery of molecules including nucleic acids in the insonified tissue. For in vivo gene transfer, the engineering of cationic MBs is essential for creating strong electrostatic interactions between MBs and nucleic acids leading to their protection against nucleases degradation and high concentration within the target tissue. Cationic MBs must be stable enough to withstand nucleic acids interaction, have a good size distribution for in vivo administration, and enough acoustic activity to be detected by echography. This review aims to summarize the basic principles of ultrasound-based delivery and new knowledge acquired in these recent years about this method. A focus is made on gene delivery by discussing reported studies made with cationic MBs including ours. They have the ability for efficient delivery of plasmid DNA (pDNA), mRNA or siRNA. Last, we discuss about the key challenges that have to be faced for a fine use of this delivery system.
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64
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Calcein Release from Cells In Vitro via Reversible and Irreversible Electroporation. J Membr Biol 2017; 251:119-130. [DOI: 10.1007/s00232-017-0005-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Accepted: 11/09/2017] [Indexed: 01/19/2023]
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65
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Xie R, Xu T, Zhu J, Wei X, Zhu W, Li L, Wang Y, Han Y, Zhou J, Bai Y. The Combination of Glycolytic Inhibitor 2-Deoxyglucose and Microbubbles Increases the Effect of 5-Aminolevulinic Acid-Sonodynamic Therapy in Liver Cancer Cells. ULTRASOUND IN MEDICINE & BIOLOGY 2017; 43:2640-2650. [PMID: 28843620 DOI: 10.1016/j.ultrasmedbio.2017.06.031] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 06/16/2017] [Accepted: 06/29/2017] [Indexed: 06/07/2023]
Abstract
Sonodynamic therapy (SDT) overcomes the shortcoming of photodynamic therapy in the treatment of cancer. Previous studies indicated that the glycolysis inhibitor 2-deoxyglucose (2-DG) potentiated photodynamic therapy induced tumor cell death and microbubbles (MBs) improved the SDT performance. We hypothesized that the combination of 2-DG and MBs will increase the effect of 5-aminolevulinic acid (ALA)-SDT in HepG2 liver cancer cells. When cells were treated with 5-min ALA-SDT and 2-mmol/L 2-DG, the cell survival rate decreased to 73.0 ± 7.1% and 75.2 ± 7.9%, respectively. Furthermore, 2 mmol/L 2-DG increased 5-min ALA-SDT induced growth inhibition and augmented ALA-SDT induced cell apoptotic rate from 9.8 ± 0.7% to 17.4 ± 2.2%. In the combination group (2-DG and ALA-SDT group), HepG2 cells possessed typical apoptotic characters. 2-DG also increased ALA-SDT associated intracellular reactive oxygen species generation and loss of mitochondrial membrane potential. Moreover, SonoVue MBs had stimulatory function on cell viability inhibition, apoptosis, reactive oxygen species production and mitochondrial membrane potential loss for combination treatment. This study suggests a promising therapeutic strategy using a combination of 2-DG, MBs and ALA-SDT for treating liver cancer.
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Affiliation(s)
- Rui Xie
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Tongying Xu
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Jiuxin Zhu
- Department of Pharmacology (the State-Province Key Laboratories of Biomedicine-Pharmaceutics of China, Key Laboratory of Cardiovascular Research, Ministry of Education), Harbin Medical University, Harbin, China
| | - Xiaoli Wei
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Wenting Zhu
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Longmin Li
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yufeng Wang
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yu Han
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Jianhua Zhou
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China
| | - Yuxian Bai
- Department of Digestive Internal Medicine & Photodynamic Therapy Center, Harbin Medical University Cancer Hospital, Harbin, China.
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66
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Laser-Activated Polymeric Microcapsules for Ultrasound Imaging and Therapy: In Vitro Feasibility. Biophys J 2017; 112:1894-1907. [PMID: 28494960 DOI: 10.1016/j.bpj.2017.03.033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 03/16/2017] [Accepted: 03/27/2017] [Indexed: 11/23/2022] Open
Abstract
Polymeric microcapsules with a light-absorbing dye incorporated in their shell can generate vapor microbubbles that can be spatiotemporally controlled by pulsed laser irradiation. These contrast agents of 6-8 μm in diameter can circulate through the vasculature, offering possibilities for ultrasound (molecular) imaging and targeted therapies. Here, we study the impact of such vapor bubbles on human endothelial cells in terms of cell poration and cell viability to establish the imaging and therapeutic windows. Two capsule formulations were used: the first one consisted of a high boiling point oil (hexadecane), whereas the second was loaded with a low boiling point oil (perfluoropentane). Poration probability was already 40% for the smallest bubbles that were formed (<7.5 μm diameter), and reached 100% for the larger bubbles. The hexadecane-loaded capsules also produced bubbles while their shell remained intact. These encapsulated bubbles could therefore be used for noninvasive ultrasound imaging after laser activation without inducing any cell damage. The controlled and localized cell destruction achieved by activation of both capsule formulations may provide an innovative approach for specifically inducing cell death in vivo, e.g., for cancer therapy.
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67
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Sengupta A, Gray MD, Kelly SC, Holguin SY, Thadhani NN, Prausnitz MR. Energy Transfer Mechanisms during Molecular Delivery to Cells by Laser-Activated Carbon Nanoparticles. Biophys J 2017; 112:1258-1269. [PMID: 28355552 DOI: 10.1016/j.bpj.2017.02.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/06/2017] [Accepted: 02/07/2017] [Indexed: 11/26/2022] Open
Abstract
Previous studies have shown that exposure of carbon black nanoparticles to nanosecond pulsed near-infrared laser causes intracellular delivery of molecules through hypothesized transient breaks in the cell membrane. The goal of this study is to determine the underlying mechanisms of sequential energy transfer from laser light to nanoparticle to fluid medium to cell. We found that laser pulses on a timescale of 10 ns rapidly heat carbon nanoparticles to temperatures on the order of 1200 K. Heat is transferred from the nanoparticles to the surrounding aqueous medium on a similar timescale, causing vaporization of the surrounding water and generation of acoustic emissions. Nearby cells can be impacted thermally by the hot bubbles and mechanically by fluid mechanical forces to transiently increase cell membrane permeability. The experimental and theoretical results indicate that transfer of momentum and/or heat from the bubbles to the cells are the dominant mechanisms of energy transfer that results in intracellular uptake of molecules. We further conclude that neither thermal expansion of the nanoparticles nor a carbon-steam chemical reaction play a significant role in the observed effects on cells, and that acoustic pressure appears to be concurrent with, but not essential to, the observed bioeffects.
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Affiliation(s)
- Aritra Sengupta
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Michael D Gray
- George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Sean C Kelly
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Stefany Y Holguin
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Naresh N Thadhani
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia
| | - Mark R Prausnitz
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia.
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68
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Kudo N. High-Speed In Situ Observation System for Sonoporation of Cells With Size- and Position-Controlled Microbubbles. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2017; 64:273-280. [PMID: 27623577 DOI: 10.1109/tuffc.2016.2606551] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A high-speed in situ microscopic observation system developed for basic studies on mechanisms of sonoporation is introduced in this paper. The main part of the system is an inverted-type fluorescence microscope, and a high-speed camera of 20 MHz in a maximum framing rate was used to visualize the dynamics of cavitation bubbles that causes a sonoporation effect. Differential interference contrast and fluorescence techniques were used for sensitive visualization of cell changes during sonoporation. The system is also equipped with optical tweezers that can move a microbubble of several microns in size by using a donut-shaped light beam. In situ microscopic observation of sonoporation was carried out using a cell with a size- and position-controlled microbubble. The experimental results showed that the ability of cells to repair sonoporation-induced damage depends on their membrane tension, indicating the usefulness of the observation system as a basic tool for the investigation of sonoporation phenomena.
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69
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Carugo D, Aron M, Sezgin E, Bernardino de la Serna J, Kuimova MK, Eggeling C, Stride E. Modulation of the molecular arrangement in artificial and biological membranes by phospholipid-shelled microbubbles. Biomaterials 2017; 113:105-117. [DOI: 10.1016/j.biomaterials.2016.10.034] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 10/22/2016] [Accepted: 10/23/2016] [Indexed: 12/17/2022]
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70
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Bui L, Aleid A, Alassaf A, Wilson OC, Raub CB, Frenkel V. Development of a custom biological scaffold for investigating ultrasound-mediated intracellular delivery. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 70:461-470. [DOI: 10.1016/j.msec.2016.09.029] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Revised: 08/08/2016] [Accepted: 09/12/2016] [Indexed: 01/15/2023]
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71
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Maciulevičius M, Tamošiūnas M, Jakštys B, Jurkonis R, Venslauskas MS, Šatkauskas S. Investigation of Microbubble Cavitation-Induced Calcein Release from Cells In Vitro. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:2990-3000. [PMID: 27637933 DOI: 10.1016/j.ultrasmedbio.2016.08.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 07/13/2016] [Accepted: 08/02/2016] [Indexed: 06/06/2023]
Abstract
In the present study, microbubble (MB) cavitation signal analysis was performed together with calcein release evaluation in both pressure and exposure duration domains of the acoustic field. A passive cavitation detection system was used to simultaneously measure MB scattering and attenuation signals for subsequent extraction efficiency relative to MB cavitation activity. The results indicate that the decrease in the efficiency of extraction of calcein molecules from Chinese hamster ovary cells, as well as cell viability, is associated with MB cavitation activity and can be accurately predicted using inertial cavitation doses up to 0.18 V × s (R2 > 0.9, p < 0.0001). No decrease in additional calcein release or cell viability was observed after complete MB sonodestruction was achieved. This indicates that the optimal exposure duration within which maximal sono-extraction efficiency is obtained coincides with the time necessary to achieve complete MB destruction. These results illustrate the importance of MB inertial cavitation in the sono-extraction process. To our knowledge, this study is the first to (i) investigate small molecule extraction from cells via sonoporation and (ii) relate the extraction process to the quantitative characteristics of MB cavitation acoustic spectra.
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Affiliation(s)
| | | | | | - Rytis Jurkonis
- Biomedical Engineering Institute, Kaunas University of Technology, Kaunas, Lithuania
| | | | - Saulius Šatkauskas
- Biophysical Research Group, Vytautas Magnus University, Kaunas, Lithuania.
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72
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Park YC, Zhang C, Kim S, Mohamedi G, Beigie C, Nagy JO, Holt RG, Cleveland RO, Jeon NL, Wong JY. Microvessels-on-a-Chip to Assess Targeted Ultrasound-Assisted Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:31541-31549. [PMID: 27781429 DOI: 10.1021/acsami.6b09071] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Microbubbles have been used in ultrasound-assisted drug delivery to help target solid tumors via blood vessels in vivo; however, studies to understand the phenomena at the cellular level and to optimize parameters for ultrasound or microbubbles in vivo are challenging and expensive to perform. Here, we utilize microfluidic microvessels-on-a-chip that enable visualization of microbubble/ultrasound-dependent drug delivery to microvasculature. When exposed to pulsed ultrasound, microbubbles perfused through microvessels-on-a-chip were observed to stably oscillate. Minimal cellular damage was observed for both microbubbles and untargeted doxorubicin-encapsulating liposomes (DOX-liposomes) perfused through chip microvessels. In contrast, passive and ultrasound-assisted perfusion of integrin-targeted DOX-liposomes induced cytotoxicity, which was only significantly enhanced for ultrasound-assisted perfusion when microbubbles were coperfused. These results suggest that stably oscillating microbubbles enhance targeted DOX-liposome internalization/cytotoxicity largely by stimulating integrin receptor endocytosis. Furthermore, our study demonstrates the utility of our microvessels-on-a-chip as a screening platform for optimizing drug dosage, targeting ligands and drugs.
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Affiliation(s)
- Yoonjee C Park
- Department of Biomedical Engineering, Boston University , 44 Cummington Mall, Boston, Massachusetts 02215, United States
| | - Chentian Zhang
- Department of Biomedical Engineering, Boston University , 44 Cummington Mall, Boston, Massachusetts 02215, United States
| | - Sudong Kim
- School of Mechanical and Aerospace Engineering, Seoul National University , Seoul 151-744, Korea
| | - Graciela Mohamedi
- Department of Biomedical Engineering, Boston University , 44 Cummington Mall, Boston, Massachusetts 02215, United States
| | - Carl Beigie
- Department of Biomedical Engineering, Boston University , 44 Cummington Mall, Boston, Massachusetts 02215, United States
| | - Jon O Nagy
- NanoValent Pharmaceuticals, Inc. , 910 Technology Boulevard, Suite G, Bozeman, Montana 59718, United States
| | - R Glynn Holt
- Department of Mechanical Engineering, Boston University , Boston, Massachusetts 02215, United States
| | - Robin O Cleveland
- Department of Engineering Science, Institute of Biomedical Engineering, University of Oxford , Old Road Campus Research Building, Oxford OX3 7DQ, United Kingdom
| | - Noo Li Jeon
- School of Mechanical and Aerospace Engineering, Seoul National University , Seoul 151-744, Korea
| | - Joyce Y Wong
- Department of Biomedical Engineering, Boston University , 44 Cummington Mall, Boston, Massachusetts 02215, United States
- Division of Materials Science and Engineering, Boston University , Boston, Massachusetts 02215, United States
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73
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Tan JKY, Sellers DL, Pham B, Pun SH, Horner PJ. Non-Viral Nucleic Acid Delivery Strategies to the Central Nervous System. Front Mol Neurosci 2016; 9:108. [PMID: 27847462 PMCID: PMC5088201 DOI: 10.3389/fnmol.2016.00108] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 10/11/2016] [Indexed: 12/11/2022] Open
Abstract
With an increased prevalence and understanding of central nervous system (CNS) injuries and neurological disorders, nucleic acid therapies are gaining promise as a way to regenerate lost neurons or halt disease progression. While more viral vectors have been used clinically as tools for gene delivery, non-viral vectors are gaining interest due to lower safety concerns and the ability to deliver all types of nucleic acids. Nevertheless, there are still a number of barriers to nucleic acid delivery. In this focused review, we explore the in vivo challenges hindering non-viral nucleic acid delivery to the CNS and the strategies and vehicles used to overcome them. Advantages and disadvantages of different routes of administration including: systemic injection, cerebrospinal fluid injection, intraparenchymal injection and peripheral administration are discussed. Non-viral vehicles and treatment strategies that have overcome delivery barriers and demonstrated in vivo gene transfer to the CNS are presented. These approaches can be used as guidelines in developing synthetic gene delivery vectors for CNS applications and will ultimately bring non-viral vectors closer to clinical application.
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Affiliation(s)
- James-Kevin Y Tan
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Drew L Sellers
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Binhan Pham
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Suzie H Pun
- Department of Bioengineering and Molecular Engineering & Sciences Institute, University of Washington Seattle, WA, USA
| | - Philip J Horner
- Center for Neuroregenerative Medicine, Houston Methodist Research Institute Houston, TX, USA
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74
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Žekonis G, Žekonis J, Gleiznys A, Noreikienė V, Balnytė I, Šadzevičienė R, Narbutaitė J. Effect of Supragingival Irrigation with Aerosolized 0.5% Hydrogen Peroxide on Clinical Periodontal Parameters, Markers of Systemic Inflammation, and Morphology of Gingival Tissues in Patients with Periodontitis. Med Sci Monit 2016; 22:3713-3721. [PMID: 27743448 PMCID: PMC5070619 DOI: 10.12659/msm.900338] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Various studies have shown that non-surgical periodontal treatment is correlated with reduction in clinical parameters and plasma levels of inflammatory markers. The aim of this study was to evaluate the effect of long-term weekly supragingival irrigations with aerosolized 0.5% hydrogen peroxide as maintenance therapy followed by non-surgical periodontal treatment on clinical parameters, plasma levels of inflammatory markers, and morphological changes in gingival tissues of patients with periodontitis. MATERIAL AND METHODS In total, 43 patients with chronic periodontitis were randomly allocated to long-term maintenance therapy. The patients' periodontal status was assessed using clinical parameters of approximal plaque index, modified gingival index, bleeding index, pocket probing depth, and plasma levels of inflammatory markers (high-sensitivity C-reactive protein and white blood cell count) at baseline and after 1, 2, and 3 years. The morphological status of gingival tissues (immediately after supragingival irrigation) was assessed microscopically. RESULTS Complete data were obtained on 34 patients. A highly statistically significant and consistent reduction was observed in all long-term clinical parameters and plasma levels of inflammatory markers. Morphological data showed abundant spherical bubbles in gingival tissues. CONCLUSIONS 1. The present study showed that non-surgical periodontal treatment with long-term weekly supragingival irrigations with aerosolized 0.5% hydrogen peroxide improved clinical periodontal status and plasma levels of inflammatory markers and may be a promising method in periodontology. 2. We found that supragingival irrigation with aerosolized 0.5% hydrogen peroxide created large numbers of spherical bubbles in gingival tissues.
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Affiliation(s)
- Gediminas Žekonis
- Clinic of Dental and Maxillofacial Orthopedics, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Jonas Žekonis
- Clinic of Dental and Maxillofacial Orthopedics, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Alvydas Gleiznys
- Clinic of Dental and Maxillofacial Orthopedics, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Viktorija Noreikienė
- Clinic of Dental and Maxillofacial Orthopedics, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Ingrida Balnytė
- Department of Histology and Embryology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Renata Šadzevičienė
- Clinic of Dental and Oral Pathology, Lithuanian University of Health Sciences, Kaunas, Lithuania
| | - Julija Narbutaitė
- Clinic of Oral Health and Pediatric Dentistry, Lithuanian University of Health Sciences, Kaunas, Lithuania
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75
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Shock Wave-Induced Damage of a Protein by Void Collapse. Biophys J 2016; 110:147-56. [PMID: 26745418 DOI: 10.1016/j.bpj.2015.11.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 10/28/2015] [Accepted: 11/17/2015] [Indexed: 12/20/2022] Open
Abstract
In this study, we report on a series of molecular dynamics simulations that were used to examine the effects of shock waves on a membrane-bound ion channel. A planar shock wave was found to compress the ion channel upon impact, but the protein geometry resembles the crystal structure as soon as the solvent density begins to dissipate. When a void was placed in close proximity to the membrane, the shock wave proved to be more destructive to the protein due to formation of a nanojet that results from the asymmetric collapse of the void. The nanojet was able to cause significant structural changes to the protein even at low piston velocities that are not able to directly cause poration of the membrane.
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76
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van Rooij T, Skachkov I, Beekers I, Lattwein KR, Voorneveld JD, Kokhuis TJ, Bera D, Luan Y, van der Steen AF, de Jong N, Kooiman K. Viability of endothelial cells after ultrasound-mediated sonoporation: Influence of targeting, oscillation, and displacement of microbubbles. J Control Release 2016; 238:197-211. [DOI: 10.1016/j.jconrel.2016.07.037] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 07/20/2016] [Accepted: 07/24/2016] [Indexed: 10/21/2022]
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77
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Prieur F, Pillon A, Mestas JL, Cartron V, Cèbe P, Chansard N, Lafond M, Lafon C. Enhancement of Fluorescent Probe Penetration into Tumors In Vivo Using Unseeded Inertial Cavitation. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:1706-1713. [PMID: 27087691 DOI: 10.1016/j.ultrasmedbio.2016.01.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 01/18/2016] [Accepted: 01/27/2016] [Indexed: 06/05/2023]
Abstract
Ultrasound-induced cavitation has found many applications in the field of cancer therapy. One of its beneficial effects is the enhancement of drug intake by tumor cells. Our group has developed a device that can create and control unseeded cavitation in tissue using ultrasound. We conducted experiments on tumor-bearing mice using our device to assess the impact of sonication on the penetration of fluorescent probes into tumor cells. We studied the influence of pressure level, timing of sonication and sonication duration on treatment efficiency. Our results indicate that fluorescent probes penetrate better into tumors exposed to ultrasound. The best results revealed an increase in penetration of 61% and were obtained when sonicating the tumor in presence of the probes with a peak negative pressure at focus of 19 MPa. At this pressure level, the treatment generated only minor skin damage. Treatments could be significantly accelerated as equivalent enhanced penetration of probes was achieved when multiplying the initial raster scan speed by a factor of four.
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Affiliation(s)
- Fabrice Prieur
- Inserm, U1032, LabTau, Lyon, France; Université de Lyon, Lyon, France.
| | - Arnaud Pillon
- Centre de Recherche en Oncologie Expérimentale, Institut de Recherche Pierre Fabre, Toulouse, France
| | - Jean-Louis Mestas
- Inserm, U1032, LabTau, Lyon, France; Université de Lyon, Lyon, France; Caviskills SAS, Vaulx-en-Velin, France
| | - Valérie Cartron
- Centre de Recherche en Oncologie Expérimentale, Institut de Recherche Pierre Fabre, Toulouse, France
| | - Patrick Cèbe
- Centre de Recherche en Oncologie Expérimentale, Institut de Recherche Pierre Fabre, Toulouse, France
| | - Nathalie Chansard
- Centre de Recherche en Oncologie Expérimentale, Institut de Recherche Pierre Fabre, Toulouse, France
| | - Maxime Lafond
- Inserm, U1032, LabTau, Lyon, France; Université de Lyon, Lyon, France
| | - Cyril Lafon
- Inserm, U1032, LabTau, Lyon, France; Université de Lyon, Lyon, France; Caviskills SAS, Vaulx-en-Velin, France
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78
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Caschera L, Lazzara A, Piergallini L, Ricci D, Tuscano B, Vanzulli A. Contrast agents in diagnostic imaging: Present and future. Pharmacol Res 2016; 110:65-75. [PMID: 27168225 DOI: 10.1016/j.phrs.2016.04.023] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 04/21/2016] [Indexed: 11/16/2022]
Abstract
Specific contrast agents have been developed for x ray examinations (mainly CT), sonography and Magnetic Resonance Imaging. Most of them are extracellular agents which create different enhancement on basis of different vascularization or on basis of different interstitial network in tissues, but some can be targeted to a particular cell line (e.g. hepatocyte). Microbubbles can be used as carrier for therapeutic drugs which can be released in specific targets under sonographic guidance, decreasing systemic toxicity and increasing therapeutic effect. Radiologists have to choose a particular contrast agent knowing its physical and chemical properties and the possibility of adverse reactions and balancing them with the clinical benefits of a more accurate diagnosis. As for any drug, contrast agents can cause adverse events, which are more frequent with Iodine based CA, but also with Gd based CA and even with sonographic contrast agents hypersensitivity reaction can occur.
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Affiliation(s)
- Luca Caschera
- University of Milano, ASST Grande Ospedale Metropolitano, Niguarda, Milan, Italy
| | - Angelo Lazzara
- University of Milano, ASST Grande Ospedale Metropolitano, Niguarda, Milan, Italy
| | - Lorenzo Piergallini
- University of Milano, ASST Grande Ospedale Metropolitano, Niguarda, Milan, Italy
| | - Domenico Ricci
- University of Milano, ASST Grande Ospedale Metropolitano, Niguarda, Milan, Italy
| | - Bruno Tuscano
- University of Milano, ASST Grande Ospedale Metropolitano, Niguarda, Milan, Italy
| | - Angelo Vanzulli
- Department of Biomedical and Clinical Sciences, University of Milano, ASST Grande Ospedale Metropolitano, Niguarda, Milan, Italy.
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79
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Ahmed D, Ozcelik A, Bojanala N, Nama N, Upadhyay A, Chen Y, Hanna-Rose W, Huang TJ. Rotational manipulation of single cells and organisms using acoustic waves. Nat Commun 2016; 7:11085. [PMID: 27004764 PMCID: PMC4814581 DOI: 10.1038/ncomms11085] [Citation(s) in RCA: 226] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 02/19/2016] [Indexed: 12/18/2022] Open
Abstract
The precise rotational manipulation of single cells or organisms is invaluable to many applications in biology, chemistry, physics and medicine. In this article, we describe an acoustic-based, on-chip manipulation method that can rotate single microparticles, cells and organisms. To achieve this, we trapped microbubbles within predefined sidewall microcavities inside a microchannel. In an acoustic field, trapped microbubbles were driven into oscillatory motion generating steady microvortices which were utilized to precisely rotate colloids, cells and entire organisms (that is, C. elegans). We have tested the capabilities of our method by analysing reproductive system pathologies and nervous system morphology in C. elegans. Using our device, we revealed the underlying abnormal cell fusion causing defective vulval morphology in mutant worms. Our acoustofluidic rotational manipulation (ARM) technique is an easy-to-use, compact, and biocompatible method, permitting rotation regardless of optical, magnetic or electrical properties of the sample under investigation. The precise rotational manipulation of single cells is technically challenging and relies on the optical, magnetic and electrical properties of the biospecimen. Here the authors develop an acoustic-based, on-chip manipulation method that can rotate single microparticles, cells and organisms.
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Affiliation(s)
- Daniel Ahmed
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Adem Ozcelik
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Nagagireesh Bojanala
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Nitesh Nama
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Awani Upadhyay
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Yuchao Chen
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Wendy Hanna-Rose
- Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
| | - Tony Jun Huang
- Department of Engineering Science and Mechanics, The Pennsylvania State University, University Park, Pennsylvania 16802, USA.,Department of Bioengineering, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
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80
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Tan JKY, Pham B, Zong Y, Perez C, Maris DO, Hemphill A, Miao CH, Matula TJ, Mourad PD, Wei H, Sellers DL, Horner PJ, Pun SH. Microbubbles and ultrasound increase intraventricular polyplex gene transfer to the brain. J Control Release 2016; 231:86-93. [PMID: 26860281 DOI: 10.1016/j.jconrel.2016.02.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Revised: 01/22/2016] [Accepted: 02/02/2016] [Indexed: 12/16/2022]
Abstract
Neurons in the brain can be damaged or lost from neurodegenerative disease, stroke, or traumatic injury. Although neurogenesis occurs in mammalian adult brains, the levels of natural neurogenesis are insufficient to restore function in these cases. Gene therapy has been pursued as a promising strategy to induce differentiation of neural progenitor cells into functional neurons. Non-viral vectors are a preferred method of gene transfer due to potential safety and manufacturing benefits but suffer from lower delivery efficiencies compared to viral vectors. Since the neural stem and progenitor cells reside in the subventricular zone of the brain, intraventricular injection has been used as an administration route for gene transfer to these cells. However, the choroid plexus epithelium remains an obstacle to delivery. Recently, transient disruption of the blood-brain barrier by microbubble-enhanced ultrasound has been used to successfully improve drug delivery to the brain after intravenous injection. In this work, we demonstrate that microbubble-enhanced ultrasound can similarly improve gene transfer to the subventricular zone after intraventricular injection. Microbubbles of different surface charges (neutral, slightly cationic, and cationic) were prepared, characterized by acoustic flow cytometry, and evaluated for their ability to increase the permeability of immortalized choroid plexus epithelium monolayers in vitro. Based on these results, slightly cationic microbubbles were evaluated for microbubble and ultrasound-mediated enhancement of non-viral gene transfer in vivo. When coupled with our previously reported gene delivery vehicles, the slightly cationic microbubbles significantly increased ultrasound-mediated transfection of the murine brain when compared to commercially available Definity® microbubbles. Temporary disruption of the choroid plexus by microbubble-enhanced ultrasound is therefore a viable way of enhancing gene delivery to the brain and merits further research.
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Affiliation(s)
- James-Kevin Y Tan
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - Binhan Pham
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - Yujin Zong
- Center for Industrial and Medical Ultrasound, University of Washington, Seattle, WA 98195, USA; Department of Biomedical Engineering, Xian Jiaotong University, Xi'an, 710049, China
| | - Camilo Perez
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Center for Industrial and Medical Ultrasound, University of Washington, Seattle, WA 98195, USA
| | - Don O Maris
- Department of Neurological Surgery, University of Washington, Seattle, WA 98109, USA
| | - Ashton Hemphill
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - Carol H Miao
- Department of Pediatrics, University of Washington, Seattle, WA 98195, USA
| | - Thomas J Matula
- Center for Industrial and Medical Ultrasound, University of Washington, Seattle, WA 98195, USA
| | - Pierre D Mourad
- Department of Neurological Surgery, University of Washington, Seattle, WA 98109, USA
| | - Hua Wei
- Department of Chemistry, Lanzhou University, Lanzhou 730000, China
| | - Drew L Sellers
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
| | - Philip J Horner
- Department of Neurological Surgery, University of Washington, Seattle, WA 98109, USA.
| | - Suzie H Pun
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA; Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA.
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81
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Wang G, Zhang Q, Zhuo Z, Wu S, Xu Y, Zou L, Gan L, Tan K, Xia H, Liu Z, Gao Y. Enhanced Homing of CXCR-4 Modified Bone Marrow-Derived Mesenchymal Stem Cells to Acute Kidney Injury Tissues by Micro-Bubble-Mediated Ultrasound Exposure. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:539-548. [PMID: 26610714 DOI: 10.1016/j.ultrasmedbio.2015.10.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 10/04/2015] [Accepted: 10/10/2015] [Indexed: 06/05/2023]
Abstract
Although the curative effects of bone marrow stromal cells (BMSCs) for acute kidney injury (AKI) have been recognized, their in vivo reparative capability is limited by the low levels of targeted homing and retention of intravenous injected cells. Stromal cell-derived factor-1 (SDF-1) plays an important role in stem cell homing and retention through interaction with its specific functional receptor, CXCR4, which is presumably related to the poor homing in AKI therapy. However, most of the functional CXCR4 chemokine receptors are lost upon in vitro culturing. Ultrasound-targeted micro-bubble destruction (UTMD) has become one of the most promising strategies for the targeted delivery of drugs and genes. To improve BMSC homing to AKI kidneys, we isolated and cultured rat BMSCs to third passage and enhanced CXCR-4 transfection efficiency in vitro by applying UTMD and polyethylenimine. Transwell migration assay showed that the migration ability of CXCR4-modified BMSCs was nine-fold higher than controls. Then, mercuric chloride-induced AKI rats were injected with transfected BMSCs through their tail veins. We showed that enhanced homing and retention of BMSCs were observed in the CXCR-4 modified group compared with other groups at 1, 2 and 3 d post-treatment. Collectively, our data indicated that UTMD was an effective method to increase BMSCs' engraftment to AKI kidney tissues by increasing CXCR-4 expression.
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Affiliation(s)
- Gong Wang
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Qian Zhang
- Department of Nephropathy, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Zhongxiong Zhuo
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Shengzheng Wu
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Yali Xu
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Linru Zou
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Ling Gan
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Kaibin Tan
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Hongmei Xia
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Zheng Liu
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China
| | - Yunhua Gao
- Department of Ultrasound, Xinqiao Hospital, The Third Military Medical University, Chongqing, China.
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82
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Möckl L, Lindhorst TK, Bräuchle C. Artificial Formation and Tuning of Glycoprotein Networks on Live Cell Membranes: A Single-Molecule Tracking Study. Chemphyschem 2016; 17:829-35. [PMID: 26698366 DOI: 10.1002/cphc.201500809] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Indexed: 01/26/2023]
Abstract
We present a method to artificially induce network formation of membrane glycoproteins and show the precise tuning of their interconnection on living cells. For this, membrane glycans are first metabolically labeled with azido sugars and then tagged with biotin by copper-free click chemistry. Finally, these biotin-tagged membrane proteins are interconnected with streptavidin (SA) to form an artificial protein network in analogy to a lectin-induced lattice. The degree of network formation can be controlled by the concentration of SA, its valency, and the concentration of biotin on membrane proteins. This was verified by investigation of the spatiotemporal dynamics of the SA-protein networks employing single-molecule tracking. It was also proven that this network formation strongly influences the biologically relevant process of endocytosis as it is known from natural lattices on the cell surface.
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Affiliation(s)
- Leonhard Möckl
- Department of Physical Chemistry, Ludwig Maximilian University of Munich, Butenandtstr. 11, 81377, Munich, Germany
| | - Thisbe K Lindhorst
- Otto Diels Institute of Organic Chemistry, Christiana Albertina University of Kiel, Otto-Hahn-Platz 3-4, 24098, Kiel, Germany
| | - Christoph Bräuchle
- Department of Physical Chemistry, Ludwig Maximilian University of Munich, Butenandtstr. 11, 81377, Munich, Germany.
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83
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Lajoinie G, De Cock I, Coussios CC, Lentacker I, Le Gac S, Stride E, Versluis M. In vitro methods to study bubble-cell interactions: Fundamentals and therapeutic applications. BIOMICROFLUIDICS 2016; 10:011501. [PMID: 26865903 PMCID: PMC4733084 DOI: 10.1063/1.4940429] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 01/05/2016] [Indexed: 05/08/2023]
Abstract
Besides their use as contrast agents for ultrasound imaging, microbubbles are increasingly studied for a wide range of therapeutic applications. In particular, their ability to enhance the uptake of drugs through the permeabilization of tissues and cell membranes shows great promise. In order to fully understand the numerous paths by which bubbles can interact with cells and the even larger number of possible biological responses from the cells, thorough and extensive work is necessary. In this review, we consider the range of experimental techniques implemented in in vitro studies with the aim of elucidating these microbubble-cell interactions. First of all, the variety of cell types and cell models available are discussed, emphasizing the need for more and more complex models replicating in vivo conditions together with experimental challenges associated with this increased complexity. Second, the different types of stabilized microbubbles and more recently developed droplets and particles are presented, followed by their acoustic or optical excitation methods. Finally, the techniques exploited to study the microbubble-cell interactions are reviewed. These techniques operate over a wide range of timescales, or even off-line, revealing particular aspects or subsequent effects of these interactions. Therefore, knowledge obtained from several techniques must be combined to elucidate the underlying processes.
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Affiliation(s)
- Guillaume Lajoinie
- Physics of Fluids Group, MESA+ Institute for Nanotechnology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente , Enschede, The Netherlands
| | - Ine De Cock
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicines, Faculty of Pharmaceutical Sciences, Ghent University , Ghent, Belgium
| | | | - Ine Lentacker
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicines, Faculty of Pharmaceutical Sciences, Ghent University , Ghent, Belgium
| | - Séverine Le Gac
- MESA+ Institute for Nanotechnology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente , Enschede, The Netherlands
| | - Eleanor Stride
- Institute of Biomedical Engineering, University of Oxford , Oxford, United Kingdom
| | - Michel Versluis
- Physics of Fluids Group, MESA+ Institute for Nanotechnology, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente , Enschede, The Netherlands
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84
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Bouakaz A, Zeghimi A, Doinikov AA. Sonoporation: Concept and Mechanisms. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 880:175-89. [PMID: 26486338 DOI: 10.1007/978-3-319-22536-4_10] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
Contrast agents for ultrasound are now routinely used for diagnosis and imaging. In recent years, new promising possibilities for targeted drug delivery have been proposed that can be realized by using the microbubble composing ultrasound contrast agents (UCAs). The microbubbles can carry drugs and selectively adhere to specific sites in the human body. This capability, in combination with the effect known as sonoporation, provides great possibilities for localized drug delivery. Sonoporation is a process in which ultrasonically activated UCAs, pulsating nearby biological barriers (cell membrane or endothelial layer), increase their permeability and thereby enhance the extravasation of external substances. In this way drugs and genes can be delivered inside individual cells without serious consequences for the cell viability. Sonoporation has been validated both in-vitro using cell cultures and in-vivo in preclinical studies. However, today, the mechanisms by which molecules cross the biological barriers remain unrevealed despite a number of proposed theories. This chapter will provide a survey of the current studies on various hypotheses regarding the routes by which drugs are incorporated into cells or across the endothelial layer and possible associated microbubble acoustic phenomena.
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Affiliation(s)
- Ayache Bouakaz
- Inserm Imaging and Ultrasound, INSERM U930, Imagerie et Cerveau, Université François-Rabelais de Tours, Tours, France.
| | - Aya Zeghimi
- Inserm Imaging and Ultrasound, INSERM U930, Imagerie et Cerveau, Université François-Rabelais de Tours, Tours, France
| | - Alexander A Doinikov
- Inserm Imaging and Ultrasound, INSERM U930, Imagerie et Cerveau, Université François-Rabelais de Tours, Tours, France
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85
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Wallace N, Wrenn SP. Ultrasound triggered drug delivery with liposomal nested microbubbles. ULTRASONICS 2015; 63:31-38. [PMID: 26152887 DOI: 10.1016/j.ultras.2015.06.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 06/10/2015] [Accepted: 06/10/2015] [Indexed: 06/04/2023]
Abstract
When ultrasound contrast agent microbubbles are nested within a liposome, damage to the liposome membrane caused by both stable and inertial cavitation of the microbubble allows for release of the aqueous core of the liposome. Triggered release was not accomplished unless microbubbles were present within the liposome. Leakage was tested using fluorescence assays developed specifically for this drug delivery vehicle and qualitative measurements using an optical microscope. These studies were done using a 1 MHz focused ultrasound transducer while varying parameters including peak negative ultrasound pressure, average liposome diameter, and microbubble concentration. Two regimes exist for membrane disruption caused by cavitating microbubbles. A faster release rate, as well as permanent membrane damage are seen for samples exposed to high pressure (2.1-3.7 MPa). A slower release rate and dilation/temporary poration are characteristic of stable cavitation for low pressure studies (0.54-1.7 MPa).
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Affiliation(s)
- N Wallace
- Department of Chemical Engineering, Drexel University, 3141 Chestnut St, Philadelphia, PA 19104, United States.
| | - S P Wrenn
- Department of Chemical Engineering, Drexel University, 3141 Chestnut St, Philadelphia, PA 19104, United States.
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86
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Nande R, Howard CM, Claudio PP. Ultrasound-mediated oncolytic virus delivery and uptake for increased therapeutic efficacy: state of art. Oncolytic Virother 2015; 4:193-205. [PMID: 27512682 PMCID: PMC4918399 DOI: 10.2147/ov.s66097] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The field of ultrasound (US) has changed significantly from medical imaging and diagnosis to treatment strategies. US contrast agents or microbubbles (MB) are currently being used as potential carriers for chemodrugs, small molecules, nucleic acids, small interfering ribonucleic acid, proteins, adenoviruses, and oncolytic viruses. Oncolytic viruses can selectively replicate within and destroy a cancer cell, thus making them a powerful therapeutic in treating late-stage or metastatic cancer. These viruses have been shown to have robust activity in clinical trials when injected directly into tumor nodules. However limitations in oncolytic virus’ effectiveness and its delivery approach have warranted exploration of ultrasound-mediated delivery. Gene therapy bearing adenoviruses or oncolytic viruses can be coupled with MBs and injected intravenously. Following application of US energy to the target region, the MBs cavitate, and the resulting shock wave enhances drug, gene, or adenovirus uptake. Though the underlying mechanism is yet to be fully understood, there is evidence to suggest that mechanical pore formation of cellular membranes allows for the temporary uptake of drugs. This delivery method circumvents the limitations due to stimulation of the immune system that prevented intravenous administration of viruses. This review provides insight into this intriguing new frontier on the delivery of oncolytic viruses to tumor sites.
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Affiliation(s)
- Rounak Nande
- Department of Biochemistry and Microbiology, Marshall University School of Medicine, Huntington, WV, USA
| | - Candace M Howard
- Department of Radiology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Pier Paolo Claudio
- Department of BioMolecular Sciences and National Center for Natural Products Research, School of Pharmacy, University of Mississippi, MS, USA; Department of Radiation Oncology, University of Mississippi Medical Center, Jackson, MS, USA
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87
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Leow RS, Wan JMF, Yu ACH. Membrane blebbing as a recovery manoeuvre in site-specific sonoporation mediated by targeted microbubbles. J R Soc Interface 2015; 12:rsif.2015.0029. [PMID: 25694544 DOI: 10.1098/rsif.2015.0029] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Site-specific perforation of the plasma membrane can be achieved through ultrasound-triggered cavitation of a single microbubble positioned adjacent to the cell. However, for this perforation approach (sonoporation), the recovery manoeuvres invoked by the cell are unknown. Here, we report new findings on how membrane blebbing can be a recovery manoeuvre that may take place in sonoporation episodes whose pores are of micrometres in diameter. Each sonoporation site was created using a protocol involving single-shot ultrasound exposure (frequency: 1 MHz; pulse length: 30 cycles; peak negative pressure: 0.45 MPa) which triggered inertial cavitation of a single targeted microbubble (diameter: 1-5 µm). Over this process, live confocal microscopy was conducted in situ to monitor membrane dynamics, model drug uptake kinetics and cytoplasmic calcium ion (Ca(2+)) distribution. Results show that blebbing would occur at a recovering sonoporation site after its resealing, and it may emerge elsewhere along the membrane periphery. The bleb size was correlated with the pre-exposure microbubble diameter, and 99% of blebbing cases at sonoporation sites were inflicted by microbubbles larger than 1.5 µm diameter (analysed over 124 sonoporation episodes). Blebs were not observed at irreversible sonoporation sites or when sonoporation site repair was inhibited via extracellular Ca(2+) chelation. Functionally, the bleb volume was found to serve as a buffer compartment to accommodate the cytoplasmic Ca(2+) excess brought about by Ca(2+) influx during sonoporation. These findings suggest that membrane blebbing would help sonoporated cells restore homeostasis.
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Affiliation(s)
- Ruen Shan Leow
- Medical Engineering Program, The University of Hong Kong, Pokfulam, Hong Kong
| | - Jennifer M F Wan
- School of Biological Sciences, The University of Hong Kong, Pokfulam, Hong Kong
| | - Alfred C H Yu
- Medical Engineering Program, The University of Hong Kong, Pokfulam, Hong Kong
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88
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Abstract
BACKGROUND Conflicting reports in the literature have raised the question whether radial extracorporeal shock wave therapy (rESWT) devices and vibrating massage devices have similar energy signatures and, hence, cause similar bioeffects in treated tissues. METHODS AND FINDINGS We used laser fiber optic probe hydrophone (FOPH) measurements, high-speed imaging and x-ray film analysis to compare fundamental elements of the energy signatures of two rESWT devices (Swiss DolorClast; Electro Medical Systems, Nyon, Switzerland; D-Actor 200; Storz Medical, Tägerwillen, Switzerland) and a vibrating massage device (Vibracare; G5/General Physiotherapy, Inc., Earth City, MO, USA). To assert potential bioeffects of these treatment modalities we investigated the influence of rESWT and vibrating massage devices on locomotion ability of Caenorhabditis elegans (C. elegans) worms. RESULTS FOPH measurements demonstrated that both rESWT devices generated acoustic waves with comparable pressure and energy flux density. Furthermore, both rESWT devices generated cavitation as evidenced by high-speed imaging and caused mechanical damage on the surface of x-ray film. The vibrating massage device did not show any of these characteristics. Moreover, locomotion ability of C. elegans was statistically significantly impaired after exposure to radial extracorporeal shock waves but was unaffected after exposure of worms to the vibrating massage device. CONCLUSIONS The results of the present study indicate that both energy signature and bioeffects of rESWT devices are fundamentally different from those of vibrating massage devices. CLINICAL RELEVANCE Prior ESWT studies have shown that tissues treated with sufficient quantities of acoustic sound waves undergo cavitation build-up, mechanotransduction, and ultimately, a biological alteration that "kick-starts" the healing response. Due to their different treatment indications and contra-indications rESWT devices cannot be equated to vibrating massage devices and should be used with due caution in clinical practice.
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89
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Song KH, Fan AC, Brlansky JT, Trudeau T, Gutierrez-Hartmann A, Calvisi ML, Borden MA. High Efficiency Molecular Delivery with Sequential Low-Energy Sonoporation Bursts. Theranostics 2015; 5:1419-27. [PMID: 26681986 PMCID: PMC4672022 DOI: 10.7150/thno.13033] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 08/19/2015] [Indexed: 11/05/2022] Open
Abstract
Microbubbles interact with ultrasound to induce transient microscopic pores in the cellular plasma membrane in a highly localized thermo-mechanical process called sonoporation. Theranostic applications of in vitro sonoporation include molecular delivery (e.g., transfection, drug loading and cell labeling), as well as molecular extraction for measuring intracellular biomarkers, such as proteins and mRNA. Prior research focusing mainly on the effects of acoustic forcing with polydisperse microbubbles has identified a "soft limit" of sonoporation efficiency at 50% when including dead and lysed cells. We show here that this limit can be exceeded with the judicious use of monodisperse microbubbles driven by a physiotherapy device (1.0 MHz, 2.0 W/cm(2), 10% duty cycle). We first examined the effects of microbubble size and found that small-diameter microbubbles (2 µm) deliver more instantaneous power than larger microbubbles (4 & 6 µm). However, owing to rapid fragmentation and a short half-life (0.7 s for 2 µm; 13.3 s for 6 µm), they also deliver less energy over the sonoporation time. This translates to a higher ratio of FITC-dextran (70 kDa) uptake to cell death/lysis (4:1 for 2 µm; 1:2 for 6 µm) in suspended HeLa cells after a single sonoporation. Sequential sonoporations (up to four) were consequently employed to increase molecular delivery. Peak uptake was found to be 66.1 ± 1.2% (n=3) after two sonoporations when properly accounting for cell lysis (7.0 ± 5.6%) and death (17.9 ± 2.0%), thus overcoming the previously reported soft limit. Substitution of TRITC-dextran (70 kDa) on the second sonoporation confirmed the effects were multiplicative. Overall, this study demonstrates the possibility of utilizing monodisperse small-diameter microbubbles as a means to achieve multiple low-energy sonoporation bursts for efficient in vitro cellular uptake and sequential molecular delivery.
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90
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He C, Zeng H, Chen J. Modeling of the Effect of Cell Deformation Associated with Microbubble Collision in Centrifugation Field. Cell Mol Bioeng 2015. [DOI: 10.1007/s12195-015-0416-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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91
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Two-bubble acoustic tweezing cytometry for biomechanical probing and stimulation of cells. Biophys J 2015; 108:32-42. [PMID: 25564850 DOI: 10.1016/j.bpj.2014.11.050] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 10/04/2014] [Accepted: 11/04/2014] [Indexed: 01/15/2023] Open
Abstract
The study of mechanotransduction relies on tools that are capable of applying mechanical forces to elicit and assess cellular responses. Here we report a new (to our knowledge) technique, called two-bubble acoustic tweezing cytometry (TB-ATC), for generating spatiotemporally controlled subcellular mechanical forces on live cells by acoustic actuation of paired microbubbles targeted to the cell adhesion receptor integrin. By measuring the ultrasound-induced activities of cell-bound microbubbles and the actin cytoskeleton contractile force responses, we determine that TB-ATC elicits mechanoresponsive cellular changes via cyclic, paired displacements of integrin-bound microbubbles driven by the attractive secondary acoustic radiation force (sARF) between the bubbles in an ultrasound field. We demonstrate the feasibility of dual-mode TB-ATC for both subcellular probing and mechanical stimulation. By exploiting the robust and unique interaction of ultrasound with microbubbles, TB-ATC provides distinct advantages for experimentation and quantification of applied forces and cellular responses for biomechanical probing and stimulation of cells.
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92
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Shamout FE, Pouliopoulos AN, Lee P, Bonaccorsi S, Towhidi L, Krams R, Choi JJ. Enhancement of non-invasive trans-membrane drug delivery using ultrasound and microbubbles during physiologically relevant flow. ULTRASOUND IN MEDICINE & BIOLOGY 2015; 41:2435-48. [PMID: 26067786 DOI: 10.1016/j.ultrasmedbio.2015.05.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Revised: 05/01/2015] [Accepted: 05/04/2015] [Indexed: 05/12/2023]
Abstract
Sonoporation has been associated with drug delivery across cell membranes and into target cells, yet several limitations have prohibited further advancement of this technology. Higher delivery rates were associated with increased cellular death, thus implying a safety-efficacy trade-off. Meanwhile, there has been no reported study of safe in vitro sonoporation in a physiologically relevant flow environment. The objective of our study was not only to evaluate sonoporation under physiologically relevant flow conditions, such as fluid velocity, shear stress and temperature, but also to design ultrasound parameters that exploit the presence of flow to maximize sonoporation efficacy while minimizing or avoiding cellular damage. Human umbilical vein endothelial cells (EA.hy926) were seeded in flow chambers as a monolayer to mimic the endothelium. A peristaltic pump maintained a constant fluid velocity of 12.5 cm/s. A focused 0.5 MHz transducer was used to sonicate the cells, while an inserted focused 7.5 MHz passive cavitation detector monitored microbubble-seeded cavitation emissions. Under these conditions, propidium iodide, which is normally impermeable to the cell membrane, was traced to determine whether it could enter cells after sonication. Meanwhile, calcein-AM was used as a cell viability marker. A range of focused ultrasound parameters was explored, with several unique bioeffects observed: cell detachment, preservation of cell viability with no membrane penetration, cell death and preservation of cell viability with sonoporation. The parameters were then modified further to produce safe sonoporation with minimal cell death. To increase the number of favourable cavitation events, we lowered the ultrasound exposure pressure to 40 kPapk-neg and increased the number of cavitation nuclei by 50 times to produce a trans-membrane delivery rate of 62.6% ± 4.3% with a cell viability of 95% ± 4.2%. Furthermore, acoustic cavitation analysis showed that the low pressure sonication produced stable and non-inertial cavitation throughout the pulse sequence. To our knowledge, this is the first study to demonstrate a high drug delivery rate coupled with high cell viability in a physiologically relevant in vitro flow system.
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Affiliation(s)
- Farah E Shamout
- Department of Bioengineering, Imperial College London, London, UK
| | | | - Patrizia Lee
- Department of Bioengineering, Imperial College London, London, UK
| | | | - Leila Towhidi
- Department of Bioengineering, Imperial College London, London, UK
| | - Rob Krams
- Department of Bioengineering, Imperial College London, London, UK
| | - James J Choi
- Department of Bioengineering, Imperial College London, London, UK.
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93
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Burgess MT, Porter TM. Acoustic Cavitation-Mediated Delivery of Small Interfering Ribonucleic Acids with Phase-Shift Nano-Emulsions. ULTRASOUND IN MEDICINE & BIOLOGY 2015; 41:2191-201. [PMID: 25979417 PMCID: PMC4466208 DOI: 10.1016/j.ultrasmedbio.2015.04.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 03/30/2015] [Accepted: 04/01/2015] [Indexed: 05/11/2023]
Abstract
Localized, targeted delivery of small interfering ribonucleic acid (siRNA) has been the foremost hurdle in the use of siRNA for the treatment of various diseases. Major advances have been achieved in the synthesis of siRNA, which have led to greater target messenger RNA (mRNA) silencing and stability under physiologic conditions. Although numerous delivery strategies have shown promise, there are still limited options for targeted delivery and release of siRNA administered systemically. In this in vitro study, phase-shift nano-emulsions (PSNE) were explored as cavitation nuclei to facilitate free siRNA delivery to cancer cells via sonoporation. A cell suspension containing varying amounts of PSNE and siRNA was exposed to 5-MHz pulsed ultrasound at fixed settings (6.2-MPa peak negative pressure, 5-cycle pulses, 250-Hz pulse repetition frequency (PRF) and total exposure duration of 100 s). Inertial cavitation emissions were detected throughout the exposure using a passive cavitation detector. Successful siRNA delivery was achieved (i.e., >50% cell uptake) with high (>80%) viability. The percentage of cells with siRNA uptake was correlated with the amount of inertial cavitation activity generated from vaporized PSNE. The siRNA remained functional after delivery, significantly reducing expression of green fluorescent protein in a stably transfected cell line. These results indicate that vaporized PSNE can facilitate siRNA entry into the cytosol of a majority of sonicated cells and may provide a non-endosomal route for siRNA delivery.
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Affiliation(s)
- Mark T Burgess
- Department of Mechanical Engineering and Center for Nanoscience and Nanobiotechnology, Boston University, Boston, Massachusetts, USA.
| | - Tyrone M Porter
- Department of Mechanical Engineering and Center for Nanoscience and Nanobiotechnology, Boston University, Boston, Massachusetts, USA; Department of Biomedical Engineering, Boston University, Boston, Massachusetts, USA
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94
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Yu H, Lin Z, Xu L, Liu D, Shen Y. Theoretical study of microbubble dynamics in sonoporation. ULTRASONICS 2015; 61:136-144. [PMID: 25957067 DOI: 10.1016/j.ultras.2015.04.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2014] [Revised: 04/20/2015] [Accepted: 04/20/2015] [Indexed: 06/04/2023]
Abstract
Sonoporation is a promising technology for promoting the transfer of drug or gene into cells using ultrasound-mediated microbubbles that transiently break up the cell membrane. In this article, a model is established to analyze the dynamics of ultrasound-mediated microbubble near the cell membrane, which may be especially useful for understanding the mechanisms of sonoporation. In the model, the velocity potential of fluid on the microbubble surface and on the cell membrane is obtained by the unsteady Bernoulli equations, and it is solved by using the boundary integral equations. By numerically analyzing the model, the typical microbubble dynamics near the cell membrane are enumerated, which may be mainly governed by mechanical index. The model also established the connections among the parameters of ultrasound exposure, microbubble characteristics, and cell membrane properties in sonoporation.
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Affiliation(s)
- Hao Yu
- Biomedical Engineering Department, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Zhongshi Lin
- Shenzhen Institute for Drug Control, Shenzhen 518056, China
| | - Liang Xu
- Shenzhen Institute for Drug Control, Shenzhen 518056, China
| | - Dalong Liu
- Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA
| | - Yuanyuan Shen
- National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, Department of Biomedical Engineering, School of Medicine, Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, Shenzhen University, Shenzhen 518060, China.
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95
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Wan C, Li F, Li H. Gene therapy for ocular diseases meditated by ultrasound and microbubbles (Review). Mol Med Rep 2015; 12:4803-14. [PMID: 26151686 PMCID: PMC4581786 DOI: 10.3892/mmr.2015.4054] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 06/03/2015] [Indexed: 02/06/2023] Open
Abstract
The eye is an ideal target organ for gene therapy as it is easily accessible and immune‑privileged. With the increasing insight into the underlying molecular mechanisms of ocular diseases, gene therapy has been proposed as an effective approach. Successful gene therapy depends on efficient gene transfer to targeted cells to prove stable and prolonged gene expression with minimal toxicity. At present, the main hindrance regarding the clinical application of gene therapy is not the lack of an ideal gene, but rather the lack of a safe and efficient method to selectively deliver genes to target cells and tissues. Ultrasound‑targeted microbubble destruction (UTMD), with the advantages of high safety, repetitive applicability and tissue targeting, has become a potential strategy for gene‑ and drug delivery. When gene‑loaded microbubbles are injected, UTMD is able to enhance the transport of the gene to the targeted cells. High‑amplitude oscillations of microbubbles act as cavitation nuclei which can effectively focus ultrasound energy, produce oscillations and disruptions that increase the permeability of the cell membrane and create transient pores in the cell membrane. Thereby, the efficiency of gene therapy can be significantly improved. The UTMD‑mediated gene delivery system has been widely used in pre‑clinical studies to enhance gene expression in a site‑specific manner in a variety of organs. With reasonable application, the effects of sonoporation can be spatially and temporally controlled to improve localized tissue deposition of gene complexes for ocular gene therapy applications. In addition, appropriately powered, focused ultrasound combined with microbubbles can induce a reversible disruption of the blood‑retinal barrier with no significant side effects. The present review discusses the current status of gene therapy of ocular diseases as well as studies on gene therapy of ocular diseases meditated by UTMD.
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Affiliation(s)
- Caifeng Wan
- Department of Ultrasound, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Fenghua Li
- Department of Ultrasound, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
| | - Hongli Li
- Department of Ultrasound, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, P.R. China
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96
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Derieppe M, Rojek K, Escoffre JM, de Senneville BD, Moonen C, Bos C. Recruitment of endocytosis in sonopermeabilization-mediated drug delivery: a real-time study. Phys Biol 2015; 12:046010. [PMID: 26118644 DOI: 10.1088/1478-3975/12/4/046010] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Microbubbles (MBs) in combination with ultrasound (US) can enhance cell membrane permeability, and have the potential to facilitate the cellular uptake of hydrophilic molecules. However, the exact mechanism behind US- and MB-mediated intracellular delivery still remains to be fully understood. Among the proposed mechanisms are formation of transient pores and endocytosis stimulation. In our study, we investigated whether endocytosis is involved in US- and MB-mediated delivery of small molecules. Dynamic fluorescence microscopy was used to investigate the effects of endocytosis inhibitors on the pharmacokinetic parameters of US- and MB-mediated uptake of SYTOX Green, a 600 Da hydrophilic model drug. C6 rat glioma cells, together with SonoVue(®) MBs, were exposed to 1.4 MHz US waves at 0.2 MPa peak-negative pressure. Collection of the signal intensity in each individual nucleus was monitored during and after US exposure by a fibered confocal fluorescence microscope designed for real-time imaging. Exposed to US waves, C6 cells pretreated with chlorpromazine, an inhibitor of clathrin-mediated endocytosis, showed up to a 2.5-fold significant increase of the uptake time constant, and a 1.1-fold increase with genistein, an inhibitor of caveolae-mediated endocytosis. Both inhibitors slowed down the US-mediated uptake of SYTOX Green. With C6 cells and our experimental settings, these quantitative data indicate that endocytosis plays a role in sonopermeabilization-mediated delivery of small molecules with a more predominant contribution of clathrin-mediated endocytosis.
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Affiliation(s)
- Marc Derieppe
- Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands
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97
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Muleki Seya P, Fouqueray M, Ngo J, Poizat A, Inserra C, Béra JC. Sonoporation of adherent cells under regulated ultrasound cavitation conditions. ULTRASOUND IN MEDICINE & BIOLOGY 2015; 41:1008-1019. [PMID: 25701522 DOI: 10.1016/j.ultrasmedbio.2014.11.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 09/08/2014] [Accepted: 11/06/2014] [Indexed: 06/04/2023]
Abstract
A sonoporation device dedicated to the adherent cell monolayer has been implemented with a regulation process allowing the real-time monitoring and control of inertial cavitation activity. Use of the cavitation-regulated device revealed first that adherent cell sonoporation efficiency is related to inertial cavitation activity, without inducing additional cell mortality. Reproducibility is enhanced for the highest sonoporation rates (up to 17%); sonoporation efficiency can reach 26% when advantage is taken of the standing wave acoustic configuration by applying a frequency sweep with ultrasound frequency tuned to the modal acoustic modes of the cavity. This device allows sonoporation of adherent and suspended cells, and the use of regulation allows some environmental parameters such as the temperature of the medium to be overcome, resulting in the possibility of cell sonoporation even at ambient temperature.
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Affiliation(s)
- Pauline Muleki Seya
- Inserm, U1032, LabTau, Lyon, F-69003, France; Université de Lyon, Lyon, F-69003, France.
| | - Manuela Fouqueray
- Inserm, U1032, LabTau, Lyon, F-69003, France; Université de Lyon, Lyon, F-69003, France
| | - Jacqueline Ngo
- Inserm, U1032, LabTau, Lyon, F-69003, France; Université de Lyon, Lyon, F-69003, France
| | - Adrien Poizat
- Inserm, U1032, LabTau, Lyon, F-69003, France; Université de Lyon, Lyon, F-69003, France
| | - Claude Inserra
- Inserm, U1032, LabTau, Lyon, F-69003, France; Université de Lyon, Lyon, F-69003, France
| | - Jean-Christophe Béra
- Inserm, U1032, LabTau, Lyon, F-69003, France; Université de Lyon, Lyon, F-69003, France
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98
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Lammertink B, Deckers R, Storm G, Moonen C, Bos C. Duration of ultrasound-mediated enhanced plasma membrane permeability. Int J Pharm 2014; 482:92-8. [PMID: 25497443 DOI: 10.1016/j.ijpharm.2014.12.013] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 01/26/2023]
Abstract
Ultrasound (US) induced cavitation can be used to enhance the intracellular delivery of drugs by transiently increasing the cell membrane permeability. The duration of this increased permeability, termed temporal window, has not been fully elucidated. In this study, the temporal window was investigated systematically using an endothelial- and two breast cancer cell lines. Model drug uptake was measured as a function of time after sonication, in the presence of SonoVue™ microbubbles, in HUVEC, MDA-MB-468 and 4T1 cells. In addition, US pressure amplitude was varied in MDA-MB-468 cells to investigate its effect on the temporal window. Cell membrane permeability of HUVEC and MDA-MB-468 cells returned to control level within 1-2 h post-sonication, while 4T1 cells needed over 3h. US pressure affected the number of cells with increased membrane permeability, as well as the temporal window in MDA-MB-468 cells. This study shows that the duration of increased membrane permeability differed between the cell lines and US pressures used here. However, all were consistently in the order of 1-3 h after sonication.
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Affiliation(s)
- Bart Lammertink
- Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands.
| | - Roel Deckers
- Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands
| | - Gert Storm
- Pharmaceutical Sciences, Utrecht University, Utrecht, Netherlands; Targeted Therapeutics, University of Twente, Enschede, Netherlands
| | - Chrit Moonen
- Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands
| | - Clemens Bos
- Imaging Division, University Medical Center Utrecht, Utrecht, Netherlands
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99
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Yang X, Jo J. Enhanced cavitation by using two consecutive ultrasound waves at different frequencies. APPLIED PHYSICS LETTERS 2014; 105:193701. [PMID: 25425746 PMCID: PMC4235622 DOI: 10.1063/1.4902118] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Accepted: 11/07/2014] [Indexed: 06/03/2023]
Abstract
Efficient and noninvasive generation of cavitation bubbles in soft tissue is a challenging task due to the lack of cavitation nuclei (i.e., pre-existing gas bubbles). In this study, we present a method to generate and enhance cavitation activity based on the utilization of two consecutive ultrasound waves at different frequencies. First, a high frequency (5 MHz) high intensity focused ultrasound (HIFU) wave was applied to a tissue-mimicking phantom to induce a rapid temperature rise in the ultrasound focal region. Immediately following the high frequency HIFU wave, a low frequency (1 MHz) HIFU wave was applied to the same focal region to induce acoustic cavitation. We found that cavitation activity was enhanced when the temperature in the tissue-mimicking phantom was first elevated by the high frequency HIFU wave. The enhancement was greater when a higher intensity of high frequency HIFU wave was applied. This result may be due to the temporary super-saturation of air in the initially air-saturated test samples and the reduction of surface tension at an elevated temperature.
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Affiliation(s)
- Xinmai Yang
- Department of Mechanical Engineering, The University of Kansas , 1530 W. 15th Street, 5109 Learned Hall, Lawrence, Kansas 66045, USA
| | - Janggun Jo
- Department of Mechanical Engineering, The University of Kansas , 1530 W. 15th Street, 5109 Learned Hall, Lawrence, Kansas 66045, USA
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100
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De Cock I, Zagato E, Braeckmans K, Luan Y, de Jong N, De Smedt SC, Lentacker I. Ultrasound and microbubble mediated drug delivery: acoustic pressure as determinant for uptake via membrane pores or endocytosis. J Control Release 2014; 197:20-8. [PMID: 25449801 DOI: 10.1016/j.jconrel.2014.10.031] [Citation(s) in RCA: 160] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 10/22/2014] [Accepted: 10/29/2014] [Indexed: 02/02/2023]
Abstract
Although promising results are achieved in ultrasound mediated drug delivery, its underlying biophysical mechanisms remain to be elucidated. Pore formation as well as endocytosis has been reported during ultrasound application. Due to the plethora of ultrasound settings used in literature, it is extremely difficult to draw conclusions on which mechanism is actually involved. To our knowledge, we are the first to show that acoustic pressure influences which route of drug uptake is addressed, by inducing different microbubble-cell interactions. To investigate this, FITC-dextrans were used as model drugs and their uptake was analyzed by flow cytometry. In fluorescence intensity plots, two subpopulations arose in cells with FITC-dextran uptake after ultrasound application, corresponding to cells having either low or high uptake. Following separation of the subpopulations by FACS sorting, confocal images indicated that the low uptake population showed endocytic uptake. The high uptake population represented uptake via pores. Moreover, the distribution of the subpopulations shifted to the high uptake population with increasing acoustic pressure. Real-time confocal recordings during ultrasound revealed that membrane deformation by microbubbles may be the trigger for endocytosis via mechanostimulation of the cytoskeleton. Pore formation was shown to be caused by microbubbles propelled towards the cell. These results provide a better insight in the role of acoustic pressure in microbubble-cell interactions and the possible consequences for drug uptake. In addition, it pinpoints the need for a more rational, microbubble behavior based choice of acoustic parameters in ultrasound mediated drug delivery experiments.
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Affiliation(s)
- Ine De Cock
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium.
| | - Elisa Zagato
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
| | - Kevin Braeckmans
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
| | - Ying Luan
- Biomedical Engineering Thoraxcenter, Erasmus Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Nico de Jong
- Biomedical Engineering Thoraxcenter, Erasmus Medical Center, P.O. Box 2040, 3000 CA Rotterdam, The Netherlands
| | - Stefaan C De Smedt
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium.
| | - Ine Lentacker
- Laboratory of General Biochemistry and Physical Pharmacy, Ghent Research Group on Nanomedicine, Faculty of Pharmaceutical Sciences, Ghent University, Ottergemsesteenweg 460, Ghent, Belgium
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