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Tumor Spheroids as Model to Design Acoustically Mediated Drug Therapies: A Review. Pharmaceutics 2023; 15:pharmaceutics15030806. [PMID: 36986667 PMCID: PMC10056013 DOI: 10.3390/pharmaceutics15030806] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 02/22/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023] Open
Abstract
Tumor spheroids as well as multicellular tumor spheroids (MCTSs) are promising 3D in vitro tumor models for drug screening, drug design, drug targeting, drug toxicity, and validation of drug delivery methods. These models partly reflect the tridimensional architecture of tumors, their heterogeneity and their microenvironment, which can alter the intratumoral biodistribution, pharmacokinetics, and pharmacodynamics of drugs. The present review first focuses on current spheroid formation methods and then on in vitro investigations exploiting spheroids and MCTS for designing and validating acoustically mediated drug therapies. We discuss the limitations of the current studies and future perspectives. Various spheroid formation methods enable the easy and reproducible generation of spheroids and MCTSs. The development and assessment of acoustically mediated drug therapies have been mainly demonstrated in spheroids made up of tumor cells only. Despite the promising results obtained with these spheroids, the successful evaluation of these therapies will need to be addressed in more relevant 3D vascular MCTS models using MCTS-on-chip platforms. These MTCSs will be generated from patient-derived cancer cells and nontumor cells, such as fibroblasts, adipocytes, and immune cells.
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Bahutair WN, Abuwatfa WH, Husseini GA. Ultrasound Triggering of Liposomal Nanodrugs for Cancer Therapy: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12173051. [PMID: 36080088 PMCID: PMC9458162 DOI: 10.3390/nano12173051] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Revised: 08/27/2022] [Accepted: 08/28/2022] [Indexed: 05/11/2023]
Abstract
Efficient conventional chemotherapy is limited by its nonspecific nature, which causes severe systemic toxicity that can lead to patient discomfort and low therapeutic efficacy. The emergence of smart drug delivery systems (SDDSs) utilizing nanoparticles as drug nanocarriers has shown great potential in enhancing the targetability of anticancer agents and limiting their side effects. Liposomes are among the most investigated nanoplatforms due to their promising capabilities of encapsulating hydrophilic, lipophilic, and amphiphilic drugs, biocompatibility, physicochemical and biophysical properties. Liposomal nanodrug systems have demonstrated the ability to alter drugs' biodistribution by sufficiently delivering the entrapped chemotherapeutics at the targeted diseased sites, sparing normal cells from undesired cytotoxic effects. Combining liposomal treatments with ultrasound, as an external drug release triggering modality, has been proven effective in spatially and temporally controlling and stimulating drug release. Therefore, this paper reviews recent literature pertaining to the therapeutic synergy of triggering nanodrugs from liposomes using ultrasound. It also highlights the effects of multiple physical and chemical factors on liposomes' sonosensetivity, several ultrasound-induced drug release mechanisms, and the efficacy of ultrasound-responsive liposomal systems in cancer therapy. Overall, liposomal nanodrug systems triggered by ultrasound are promising cancer therapy platforms that can potentially alleviate the detriments of conventional cancer treatments.
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Affiliation(s)
- Wafa N. Bahutair
- Department of Chemical Engineering, College of Engineering, American University of Sharjah, Sharjah P.O. Box. 26666, United Arab Emirates
| | - Waad H. Abuwatfa
- Department of Chemical Engineering, College of Engineering, American University of Sharjah, Sharjah P.O. Box. 26666, United Arab Emirates
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box. 26666, United Arab Emirates
| | - Ghaleb A. Husseini
- Department of Chemical Engineering, College of Engineering, American University of Sharjah, Sharjah P.O. Box. 26666, United Arab Emirates
- Materials Science and Engineering Program, College of Arts and Sciences, American University of Sharjah, Sharjah P.O. Box. 26666, United Arab Emirates
- Correspondence:
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Chen AW, Jeremic A, Zderic V. Ex Vivo Imaging of Ultrasound-Stimulated Metabolic Activity in Rat Pancreatic Slices. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:666-678. [PMID: 33257101 PMCID: PMC7856007 DOI: 10.1016/j.ultrasmedbio.2020.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 06/12/2023]
Abstract
Ultrasound has previously been reported to produce a reversible stimulatory effect in cultured rat beta cells. Here, we quantified and assessed dynamic metabolic changes in an in situ pancreatic slice model evoked by ultrasound application. After plating, pancreas slices were imaged using a confocal microscope at 488 and 633 nm to image lipodamine dehydrogenase (Lip-DH) autofluorescence and a far red fluorescence, respectively. Ultrasound was applied at intensities of 0.5 and 1 W/cm2 at both 800 kHz and 1 MHz. Additionally, 800 kHz at 1 W/cm2 was applied in a pulsing scheme. No ultrasound (control) and glucose application experiments were performed. A difference in fluorescence signal before and after treatment application was the metric for analysis. Comparison of experimental groups using far red fluorescence revealed significant differences between all experimental groups and control in the islet (p < 0.05) and between all ultrasound experimental groups and control (p < 0.05) in pancreatic exocrine tissue. However, this difference in response between control and glucose did not exist in the exocrine tissue. We also observed using Lip-DH autofluorescence that glucose produces a significantly increased metabolic response in islet tissue compared with exocrine tissue (p < 0.05). Pulsed ultrasound appeared to increase metabolic activity in the pancreatic slice in a more consistent manner compared with continuous ultrasound application. Our results indicate that therapeutic ultrasound may have a stimulatory metabolic effect on the pancreatic islets similar to that of glucose.
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Affiliation(s)
- Andrew W Chen
- Department of Biomedical Engineering, The George Washington University, Washington, DC, USA
| | - Aleksandar Jeremic
- Department of Biological Sciences, George Washington University, Washington, DC, USA
| | - Vesna Zderic
- Department of Biomedical Engineering, The George Washington University, Washington, DC, USA.
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Gouarderes S, Mingotaud AF, Vicendo P, Gibot L. Vascular and extracellular matrix remodeling by physical approaches to improve drug delivery at the tumor site. Expert Opin Drug Deliv 2020; 17:1703-1726. [PMID: 32838565 DOI: 10.1080/17425247.2020.1814735] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Modern comprehensive studies of tumor microenvironment changes allowed scientists to develop new and more efficient strategies that will improve anticancer drug delivery on site. The tumor microenvironment, especially the dense extracellular matrix, has a recognized capability to hamper the penetration of conventional drugs. Development and co-applications of strategies aiming at remodeling the tumor microenvironment are highly demanded to improve drug delivery at the tumor site in a therapeutic prospect. AREAS COVERED Increasing indications suggest that classical physical approaches such as exposure to ionizing radiations, hyperthermia or light irradiation, and emerging ones as sonoporation, electric field or cold plasma technology can be applied as standalone or associated strategies to remodel the tumor microenvironment. The impacts on vasculature and extracellular matrix remodeling of these physical approaches will be discussed with the goal to improve nanotherapeutics delivery at the tumor site. EXPERT OPINION Physical approaches to modulate vascular properties and remodel the extracellular matrix are of particular interest to locally control and improve drug delivery and thus increase its therapeutic index. They are particularly powerful as adjuvant to nanomedicine delivery; the development of these technologies could have extremely widespread implications for cancer treatment.[Figure: see text].
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Affiliation(s)
- Sara Gouarderes
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier , Toulouse, France
| | - Anne-Françoise Mingotaud
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier , Toulouse, France
| | - Patricia Vicendo
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier , Toulouse, France
| | - Laure Gibot
- Laboratoire des IMRCP, Université de Toulouse, CNRS UMR 5623, Université Toulouse III - Paul Sabatier , Toulouse, France
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Chowdhury SM, Abou-Elkacem L, Lee T, Dahl J, Lutz AM. Ultrasound and microbubble mediated therapeutic delivery: Underlying mechanisms and future outlook. J Control Release 2020; 326:75-90. [PMID: 32554041 DOI: 10.1016/j.jconrel.2020.06.008] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/06/2020] [Accepted: 06/09/2020] [Indexed: 12/20/2022]
Abstract
Beyond the emerging field of oncological ultrasound molecular imaging, the recent significant advancements in ultrasound and contrast agent technology have paved the way for therapeutic ultrasound mediated microbubble oscillation and has shown that this approach is capable of increasing the permeability of microvessel walls while also initiating enhanced extravasation and drug delivery into target tissues. In addition, a large number of preclinical studies have demonstrated that ultrasound alone or combined with microbubbles can efficiently increase cell membrane permeability resulting in enhanced tissue distribution and intracellular drug delivery of molecules, nanoparticles, and other therapeutic agents. The mechanism behind the enhanced permeability is the temporary creation of pores in cell membranes through a phenomenon called sonoporation by high-intensity ultrasound and microbubbles or cavitation agents. At low ultrasound intensities (0.3-3 W/cm2), sonoporation may be caused by microbubbles oscillating in a stable motion, also known as stable cavitation. In contrast, at higher ultrasound intensities (greater than 3 W/cm2), sonoporation usually occurs through inertial cavitation that accompanies explosive growth and collapse of the microbubbles. Sonoporation has been shown to be a highly effective method to improve drug uptake through microbubble potentiated enhancement of microvascular permeability. In this review, the therapeutic strategy of using ultrasound for improved drug delivery are summarized with the special focus on cancer therapy. Additionally, we discuss the progress, challenges, and future of ultrasound-mediated drug delivery towards clinical translation.
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Affiliation(s)
- Sayan Mullick Chowdhury
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Lotfi Abou-Elkacem
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Taehwa Lee
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Jeremy Dahl
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Amelie M Lutz
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA.
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Tharkar P, Varanasi R, Wong WSF, Jin CT, Chrzanowski W. Nano-Enhanced Drug Delivery and Therapeutic Ultrasound for Cancer Treatment and Beyond. Front Bioeng Biotechnol 2019; 7:324. [PMID: 31824930 PMCID: PMC6883936 DOI: 10.3389/fbioe.2019.00324] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 10/28/2019] [Indexed: 12/24/2022] Open
Abstract
While ultrasound is most widely known for its use in diagnostic imaging, the energy carried by ultrasound waves can be utilized to influence cell function and drug delivery. Consequently, our ability to use ultrasound energy at a given intensity unlocks the opportunity to use the ultrasound for therapeutic applications. Indeed, in the last decade ultrasound-based therapies have emerged with promising treatment modalities for several medical conditions. More recently, ultrasound in combination with nanomedicines, i.e., nanoparticles, has been shown to have substantial potential to enhance the efficacy of many treatments including cancer, Alzheimer disease or osteoarthritis. The concept of ultrasound combined with drug delivery is still in its infancy and more research is needed to unfold the mechanisms and interactions of ultrasound with different nanoparticles types and with various cell types. Here we present the state-of-art in ultrasound and ultrasound-assisted drug delivery with a particular focus on cancer treatments. Notably, this review discusses the application of high intensity focus ultrasound for non-invasive tumor ablation and immunomodulatory effects of ultrasound, as well as the efficacy of nanoparticle-enhanced ultrasound therapies for different medical conditions. Furthermore, this review presents safety considerations related to ultrasound technology and gives recommendations in the context of system design and operation.
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Affiliation(s)
- Priyanka Tharkar
- Faculty of Medicine and Health, Sydney School of Pharmacy, Sydney Nano Institute, The University of Sydney, Camperdown, NSW, Australia
| | - Ramya Varanasi
- Faculty of Medicine and Health, Sydney School of Pharmacy, Sydney Nano Institute, The University of Sydney, Camperdown, NSW, Australia
| | - Wu Shun Felix Wong
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia
| | - Craig T Jin
- Faculty of Engineering, School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia
| | - Wojciech Chrzanowski
- Faculty of Medicine and Health, Sydney School of Pharmacy, Sydney Nano Institute, The University of Sydney, Camperdown, NSW, Australia
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Razavi M, Zheng F, Telichko A, Wang J, Ren G, Dahl J, Thakor AS. Improving the Function and Engraftment of Transplanted Pancreatic Islets Using Pulsed Focused Ultrasound Therapy. Sci Rep 2019; 9:13416. [PMID: 31527773 PMCID: PMC6746980 DOI: 10.1038/s41598-019-49933-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 09/03/2019] [Indexed: 11/24/2022] Open
Abstract
This study demonstrates that pulsed focused ultrasound (pFUS) therapy can non-invasively enhance the function and engraftment of pancreatic islets following transplantation. In vitro, we show that islets treated with pFUS at low (peak negative pressure (PNP): 106kPa, spatial peak temporal peak intensity (Isptp): 0.71 W/cm2), medium (PNP: 150kPa, Isptp: 1.43 W/cm2) or high (PNP: 212kPa, Isptp: 2.86 W/cm2) acoustic intensities were stimulated resulting in an increase in their function (i.e. insulin secretion at low-intensity: 1.15 ± 0.17, medium-intensity: 2.02 ± 0.25, and high-intensity: 2.54 ± 0.38 fold increase when compared to control untreated islets; P < 0.05). Furthermore, we have shown that this improvement in islet function is a result of pFUS increasing the intracellular concentration of calcium (Ca2+) within islets which was also linked to pFUS increasing the resting membrane potential (Vm) of islets. Following syngeneic renal sub-capsule islet transplantation in C57/B6 mice, pFUS (PNP: 2.9 MPa, Isptp: 895 W/cm2) improved the function of transplanted islets with diabetic animals rapidly re-establishing glycemic control. In addition, pFUS was able to enhance the engraftment by facilitating islet revascularization and reducing inflammation. Given a significant number of islets are lost immediately following transplantation, pFUS has the potential to be used in humans as a novel non-invasive therapy to facilitate islet function and engraftment, thereby improving the outcome of diabetic patients undergoing islet transplantation.
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Affiliation(s)
- Mehdi Razavi
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Fengyang Zheng
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA.,Department of Ultrasound, Zhongshan Hospital, Fudan University and Shanghai Institute of Medical Imaging, Shanghai, 200032, China
| | - Arsenii Telichko
- Jeremy Dahl Ultrasound Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Jing Wang
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Gang Ren
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Jeremy Dahl
- Jeremy Dahl Ultrasound Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA
| | - Avnesh S Thakor
- Interventional Regenerative Medicine and Imaging Laboratory, Stanford University School of Medicine, Department of Radiology, Palo Alto, California, 94304, USA.
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Abstract
Treatment of certain central nervous system disorders, including different types of cerebral malignancies, is limited by traditional oral or systemic administrations of therapeutic drugs due to possible serious side effects and/or lack of the brain penetration and, therefore, the efficacy of the drugs is diminished. During the last decade, several new technologies were developed to overcome barrier properties of cerebral capillaries. This review gives a short overview of the structural elements and anatomical features of the blood–brain barrier. The various in vitro (static and dynamic), in vivo (microdialysis), and in situ (brain perfusion) blood–brain barrier models are also presented. The drug formulations and administration options to deliver molecules effectively to the central nervous system (CNS) are presented. Nanocarriers, nanoparticles (lipid, polymeric, magnetic, gold, and carbon based nanoparticles, dendrimers, etc.), viral and peptid vectors and shuttles, sonoporation and microbubbles are briefly shown. The modulation of receptors and efflux transporters in the cell membrane can also be an effective approach to enhance brain exposure to therapeutic compounds. Intranasal administration is a noninvasive delivery route to bypass the blood–brain barrier, while direct brain administration is an invasive mode to target the brain region with therapeutic drug concentrations locally. Nowadays, both technological and mechanistic tools are available to assist in overcoming the blood–brain barrier. With these techniques more effective and even safer drugs can be developed for the treatment of devastating brain disorders.
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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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Inhibitory effects of low intensity pulsed ultrasound on osteoclastogenesis induced in vitro by breast cancer cells. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:197. [PMID: 30126457 PMCID: PMC6102871 DOI: 10.1186/s13046-018-0868-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/07/2018] [Indexed: 12/17/2022]
Abstract
Background Bone tissue is one of the main sites for breast metastasis; patients diagnosed with advanced breast cancer mostly develop bone metastasis characterized by severe osteolytic lesions, which heavily influence their life quality. Low Intensity Pulsed Ultrasound (LIPUS) is a form of mechanical energy able to modulate various molecular pathways both in cancer and in health cells. The purpose of the present study was to evaluate for the first time, the ability of LIPUS to modulate osteolytic capability of breast cancer cells. Methods Two different approaches were employed: a) Indirect method -conditioned medium obtained by MDA-MB-231 cell line treated or untreated with LIPUS was used to induce osteoclast differentiation of murine macrophage Raw264.7 cell line; and b) Direct method -MDA-MB-231 were co-cultured with Raw264.7 cells and treated or untreated with LIPUS. Results LIPUS treatment impaired MDA-MB-231 cell dependentosteoclast differentiation and produced a reduction of osteoclast markers such as Cathepsin K, Matrix Metalloproteinase 9 and Tartrate Resistant Acid Phosphatase, suggesting its role as an effective and safe adjuvant in bone metastasis management. Conclusion LIPUS treatment could be a good and safety therapeutic adjuvant in osteolyitic bone metastasis not only for the induction properties of bone regeneration, but also for the reduction of osteolysis.
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In vivo study of enhanced chemotherapy combined with ultrasound image-guided focused ultrasound (USgFUS) treatment for pancreatic cancer in a xenograft mouse model. Eur Radiol 2018; 28:3710-3718. [DOI: 10.1007/s00330-018-5355-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Revised: 01/03/2018] [Accepted: 01/25/2018] [Indexed: 12/23/2022]
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Abstract
Although viral vectors comprise the majority of gene delivery vectors, their various safety, production, and other practical concerns have left a research gap to be addressed. The non-viral vector space encompasses a growing variety of physical and chemical methods capable of gene delivery into the nuclei of target cells. Major physical methods described in this chapter are microinjection, electroporation, and ballistic injection, magnetofection, sonoporation, optical transfection, and localized hyperthermia. Major chemical methods described in this chapter are lipofection, polyfection, gold complexation, and carbon-based methods. Combination approaches to improve transfection efficiency or reduce immunological response have shown great promise in expanding the scope of non-viral gene delivery.
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Affiliation(s)
- Chi Hong Sum
- University of Waterloo, School of Pharmacy, Waterloo, ON, Canada
| | | | - Shirley Wong
- University of Waterloo, School of Pharmacy, Waterloo, ON, Canada
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Suarez Castellanos I, Singh T, Balteanu B, Bhowmick DC, Jeremic A, Zderic V. Calcium-dependent ultrasound stimulation of secretory events from pancreatic beta cells. J Ther Ultrasound 2017; 5:30. [PMID: 29214024 PMCID: PMC5715497 DOI: 10.1186/s40349-017-0108-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 11/09/2017] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Our previous studies have indicated that ultrasound can stimulate the release of insulin from pancreatic beta cells, providing a potential novel treatment for type 2 diabetes. The purpose of this study was to explore the temporal dynamics and Ca2+-dependency of ultrasound-stimulated secretory events from dopamine-loaded pancreatic beta cells in an in vitro setup. METHODS Carbon fiber amperometry was used to detect secretion from INS-1832/13 beta cells in real time. The levels of released insulin were also measured in response to ultrasound treatment using insulin-specific ELISA kit. Beta cells were exposed to continuous wave 800 kHz ultrasound at intensities of 0.1 W/cm2, 0.5 W/cm2 and 1 W/cm2 for several seconds. Cell viability tests were done with trypan blue dye exclusion test and MTT analysis. RESULTS Carbon fiber amperometry experiments showed that application of 800 kHz ultrasound at intensities of 0.5 and 1 W/cm2 was capable of stimulating secretory events for durations lasting as long as the duration of the stimulus. Furthermore, the amplitude of the detected peaks was reduced by 64% (p < 0.01) when extracellular Ca2+ was chelated with 10 mM EGTA in cells exposed to ultrasound intensity of 0.5 W/cm2. Measurements of released insulin in response to ultrasound stimulation showed complete inhibition of insulin secretion by chelating extracellular Ca2+ with 10 mM EGTA (p < 0.01). Viability studies showed that 800 kHz, 0.5 W/cm2 ultrasound did not cause any significant effects on viability and metabolic activity in cells exposed to ultrasound as compared to sham-treated cells. CONCLUSIONS Our results demonstrated that application of ultrasound was capable of stimulating the release of insulin from pancreatic beta cells in a safe, controlled and Ca2+-dependent manner.
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Affiliation(s)
- Ivan Suarez Castellanos
- Department of Biomedical Engineering, The George Washington University, 800 22nd St. NW rm 5290, Washington, District of Columbia 20052 USA
| | - Tania Singh
- Department of Biomedical Engineering, The George Washington University, 800 22nd St. NW rm 5290, Washington, District of Columbia 20052 USA
| | - Bogdan Balteanu
- Department of Biomedical Engineering, The George Washington University, 800 22nd St. NW rm 5290, Washington, District of Columbia 20052 USA
| | - Diti Chatterjee Bhowmick
- Department of Biological Sciences, The George Washington University, Washington, District of Columbia USA
| | - Aleksandar Jeremic
- Department of Biological Sciences, The George Washington University, Washington, District of Columbia USA
| | - Vesna Zderic
- Department of Biomedical Engineering, The George Washington University, 800 22nd St. NW rm 5290, Washington, District of Columbia 20052 USA
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Energy-triggered drug release from polymer nanoparticles for orthopedic applications. Ther Deliv 2017; 8:5-14. [DOI: 10.4155/tde-2016-0066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Sequestra, present in many cancers and orthopedic infections, provide a safe harbor for the development of drug resistance. In the face of burgeoning drug resistance, the importance of nanoscale, microenvironment-triggered drug delivery cannot be overestimated. Such strategies may preserve pharmaceutical efficacy and significantly alter the etiology of many orthopedic diseases. Although temperature-, pH- and redox-responsive nanoparticle-based systems have been extensively studied, local drug delivery from polymeric nanoparticles can be triggered by a variety of energy forms. This review offers an overview of the state of the field as well as a perspective on the safety and efficacy of ultrasound, hyperthermia and radio frequency-triggered internal delivery systems in a variety of applications.
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Jeong K, Kang CS, Kim Y, Lee YD, Kwon IC, Kim S. Development of highly efficient nanocarrier-mediated delivery approaches for cancer therapy. Cancer Lett 2016; 374:31-43. [DOI: 10.1016/j.canlet.2016.01.050] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2015] [Revised: 01/13/2016] [Accepted: 01/26/2016] [Indexed: 10/22/2022]
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Suarez Castellanos IM, Balteanu B, Singh T, Zderic V. Therapeutic Modulation of Calcium Dynamics Using Ultrasound and Other Energy-Based Techniques. IEEE Rev Biomed Eng 2016; 9:177-191. [DOI: 10.1109/rbme.2016.2555760] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ninomiya K, Yamashita T, Tanabe Y, Imai M, Takahashi K, Shimizu N. Targeted and ultrasound-triggered cancer cell injury using perfluorocarbon emulsion-loaded liposomes endowed with cancer cell-targeting and fusogenic capabilities. ULTRASONICS SONOCHEMISTRY 2016; 28:54-61. [PMID: 26384883 DOI: 10.1016/j.ultsonch.2015.06.032] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2015] [Revised: 06/30/2015] [Accepted: 06/30/2015] [Indexed: 06/05/2023]
Abstract
This study investigated the targeting and ultrasound-triggered injury of cancer cells using anticancer drug-free liposomes that contained an emulsion of perfluoropentane (ePFC5) and were co-modified with avidin as a targeting ligand for cancer cells and the hemagglutinating virus of Japan (HVJ) envelope to promote liposome fusion with the cells. These liposomes are designated as ePFC5-loaded avidin/HVJ liposomes. ePFC5-loaded liposomes were sensitized to ultrasound irradiation. Liposomes modified with avidin alone (avidin liposomes) showed binding to MCF-7 human breast cancer cells, and liposomes modified with HVJ envelope alone (HVJ liposomes) were found to fuse with MCF-7 cells. The irradiation of MCF-7 cells with 1 MHz ultrasound (30s, 1.2 W/cm(2), duty ratio 30%) combined with ePFC5-loaded avidin/HVJ liposomes resulted in a decrease in cell viability at 1h after irradiation to 43% of that of controls without ultrasound irradiation or liposomes. The cell viability was lower than that of cells treated with ultrasound irradiation with ePFC5-loaded avidin liposomes or ePFC5-loaded HVJ liposomes. This indicates that co-modification of liposome with avidin and HVJ envelope could enhance ultrasound-induced cell injury in the presence of ePFC5-loaded liposomes.
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Affiliation(s)
- Kazuaki Ninomiya
- Institute for Frontier Science Initiative, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takahiro Yamashita
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Yamato Tanabe
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Miki Imai
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kenji Takahashi
- Faculty of Natural System, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
| | - Nobuaki Shimizu
- Institute of Nature and Environmental Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan.
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Low-intensity continuous ultrasound triggers effective bisphosphonate anticancer activity in breast cancer. Sci Rep 2015; 5:16354. [PMID: 26578234 PMCID: PMC4649676 DOI: 10.1038/srep16354] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Accepted: 09/14/2015] [Indexed: 01/30/2023] Open
Abstract
Ultrasound (US) is a non-ionizing pressure wave that can produce mechanical and thermal effects. Bisphosphonates have demonstrated clinical utility in bone metastases treatment. Preclinical studies suggest that bisphosphonates have anticancer activity. However, bisphosphonates exhibit a high affinity for bone mineral, which reduces their bioavailibity for tumor cells. Ultrasound has been shown to be effective for drug delivery but in interaction with gas bubbles or encapsulated drugs. We examined the effects of a clinically relevant dose of bisphosphonate zoledronate (ZOL) in combination with US. In a bone metastasis model, mice treated with ZOL+US had osteolytic lesions that were 58% smaller than those of ZOL-treated animals as well as a reduced skeletal tumor burden. In a model of primary tumors, ZOL+US treatment reduced by 42% the tumor volume, compared with ZOL-treated animals. Using a fluorescent bisphosphonate, we demonstrated that US forced the release of bisphosphonate from the bone surface, enabling a continuous impregnation of the bone marrow. Additionally, US forced the penetration of ZOL within tumors, as demonstrated by the intratumoral accumulation of unprenylated Rap1A, a surrogate marker of ZOL antitumor activity. Our findings made US a promising modality to trigger bisphosphonate anticancer activity in bone metastases and in primary tumors.
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Hoogenboom M, Eikelenboom D, den Brok MH, Heerschap A, Fütterer JJ, Adema GJ. Mechanical high-intensity focused ultrasound destruction of soft tissue: working mechanisms and physiologic effects. ULTRASOUND IN MEDICINE & BIOLOGY 2015; 41:1500-17. [PMID: 25813532 DOI: 10.1016/j.ultrasmedbio.2015.02.006] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2014] [Revised: 01/14/2015] [Accepted: 02/16/2015] [Indexed: 05/11/2023]
Abstract
The best known method of high-intensity focused ultrasound is thermal ablation, but interest in non-thermal, mechanical destruction is increasing. The advantages of mechanical ablation are that thermal protein denaturation remains limited and less damage is created to the surrounding tissue by thermal diffusion. The two main techniques for mechanical fragmentation of tissue are histotripsy and boiling histotripsy. These techniques can be used for complete liquefaction of tumor tissue into submicron fragments, after which the fragmented tissue can be easily removed by natural (immunologic) responses. Interestingly it seems that there is a correlation between the degree of destruction and tissue specific characteristics based on the treatment settings used. In this review article, the technical aspects of these two techniques are described, and an overview of the in vivo pathologic and immunologic responses is provided.
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Affiliation(s)
- Martijn Hoogenboom
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
| | - Dylan Eikelenboom
- Department of Tumor Immunology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Martijn H den Brok
- Department of Tumor Immunology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Arend Heerschap
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jurgen J Fütterer
- Department of Radiology and Nuclear Medicine, Radboud University Medical Center, Nijmegen, The Netherlands; MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente, Enschede, The Netherlands
| | - Gosse J Adema
- Department of Tumor Immunology, Radboud University Medical Center, Nijmegen, The Netherlands
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Staruch RM, Hynynen K, Chopra R. Hyperthermia-mediated doxorubicin release from thermosensitive liposomes using MR-HIFU: Therapeutic effect in rabbit Vx2 tumours. Int J Hyperthermia 2015; 31:118-33. [DOI: 10.3109/02656736.2014.992483] [Citation(s) in RCA: 67] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Schleich N, Danhier F, Préat V. Iron oxide-loaded nanotheranostics: Major obstacles to in vivo studies and clinical translation. J Control Release 2015; 198:35-54. [DOI: 10.1016/j.jconrel.2014.11.024] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 11/21/2014] [Accepted: 11/22/2014] [Indexed: 12/14/2022]
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Mechanisms of microbubble-facilitated sonoporation for drug and gene delivery. Ther Deliv 2014; 5:467-86. [PMID: 24856171 DOI: 10.4155/tde.14.10] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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Tzu-Yin W, Wilson KE, Machtaler S, Willmann JK. Ultrasound and microbubble guided drug delivery: mechanistic understanding and clinical implications. Curr Pharm Biotechnol 2014; 14:743-52. [PMID: 24372231 DOI: 10.2174/1389201014666131226114611] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2013] [Revised: 10/03/2013] [Accepted: 10/03/2013] [Indexed: 12/11/2022]
Abstract
Ultrasound mediated drug delivery using microbubbles is a safe and noninvasive approach for spatially localized drug administration. This approach can create temporary and reversible openings on cellular membranes and vessel walls (a process called "sonoporation"), allowing for enhanced transport of therapeutic agents across these natural barriers. It is generally believed that the sonoporation process is highly associated with the energetic cavitation activities (volumetric expansion, contraction, fragmentation, and collapse) of the microbubble. However, a thorough understanding of the process was unavailable until recently. Important progress on the mechanistic understanding of sonoporation and the corresponding physiological responses in vitro and in vivo has been made. Specifically, recent research shed light on the cavitation process of microbubbles and fluid motion during insonation of ultrasound, on the spatio-temporal interactions between microbubbles and cells or vessel walls, as well as on the temporal course of the subsequent biological effects. These findings have significant clinical implications on the development of optimal treatment strategies for effective drug delivery. In this article, current progress in the mechanistic understanding of ultrasound and microbubble mediated drug delivery and its implications for clinical translation is discussed.
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Affiliation(s)
| | | | | | - Jurgen K Willmann
- Department of Radiology and Molecular Imaging Program at Stanford, School of Medicine, Stanford University, 300 Pasteur Drive, Room H1307, Stanford, CA 94305-5621, USA.
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Chae SY, Kim YS, Park MJ, Yang J, Park H, Namgung MS, Rhim H, Lim HK. High-intensity focused ultrasound-induced, localized mild hyperthermia to enhance anti-cancer efficacy of systemic doxorubicin: an experimental study. ULTRASOUND IN MEDICINE & BIOLOGY 2014; 40:1554-1563. [PMID: 24642222 DOI: 10.1016/j.ultrasmedbio.2014.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 01/02/2014] [Accepted: 01/06/2014] [Indexed: 06/03/2023]
Abstract
The aim of this study was to evaluate the enhancement of the efficacy of systemic doxorubicin by pulsed high-intensity focused ultrasound (HIFU)-induced, localized mild hyperthermia. For the in vitro study, the intranuclear uptake of doxorubicin by squamous cell carcinoma (SCC)-7 cells incubated at different temperatures was compared. For the in vivo study, mice with SCC-7 tumors were assigned to either the control, conventional hyperthermia, HIFU hyperthermia, doxorubicin-alone, conventional hyperthermia + doxorubicin or HIFU hyperthermia + doxorubicin group. Conventional hyperthermia was induced by immersing the tumor in warm water (42.5°C), and HIFU hyperthermia was induced by HIFU after optimizing the parameters with direct temperature measurements (frequency = 1 MHz, pulse repetition frequency = 5 Hz, power = 12 W, duty cycle = 50%). In the in vitro study, fluorescence was more intense at 42°C than at 37°C and was time dependent. In the in vivo study, tumor growth in the HIFU hyperthermia + doxorubicin group was most prominently suppressed with the highest apoptotic index compared with all other groups (p < 0.05). Pulsed HIFU-induced localized mild hyperthermia enhanced the anti-cancer efficacy of systemic doxorubicin more than conventional mild hyperthermia.
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Affiliation(s)
- Sun Young Chae
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea; Department of Health Sciences and Technology, Graduate School, Samsung Advanced Institute of Health Science and Technology, Sungkyunkwan University, Seoul, Korea
| | - Young-sun Kim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
| | - Min Jung Park
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jehoon Yang
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Hajan Park
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Mi-Sun Namgung
- Samsung Biomedical Research Institute, Samsung Medical Center, Seoul, Korea
| | - Hyunchul Rhim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Hyo Keun Lim
- Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
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Ninomiya K, Yamashita T, Kawabata S, Shimizu N. Targeted and ultrasound-triggered drug delivery using liposomes co-modified with cancer cell-targeting aptamers and a thermosensitive polymer. ULTRASONICS SONOCHEMISTRY 2014; 21:1482-1488. [PMID: 24418100 DOI: 10.1016/j.ultsonch.2013.12.023] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2013] [Revised: 12/24/2013] [Accepted: 12/24/2013] [Indexed: 06/03/2023]
Abstract
In this study, we demonstrated the feasibility of targeted and ultrasound-triggered drug delivery using liposomes co-modified with single stranded DNA aptamers that recognized platelet-derived growth factor receptors (PDGFRs) as targeting ligands for breast cancer cells and poly(NIPMAM-co-NIPAM) as the thermosensitive polymer (TSP) to sensitize these liposomes to high temperature. TSP-modified liposomes (TSP liposomes) released encapsulated calcein under 1 MHz ultrasound irradiation for 30 s at 0.5 W/cm(2) as well as the case under incubation for 5 min at 42 °C. Ultrasound-triggered calcein release from TSP liposomes was due to an increased local temperature, resulting from cavitation bubble collapse induced by ultrasound, and not due to an increase in the bulk medium temperature. Liposomes modified with PDGFR aptamers (APT liposomes) bound to MDA-MB-231 human breast cancer cells through PDGFR aptamers; however, they did not bind to primary human mammary epithelial cells (HMECs). The binding of APT liposomes was greatest for MDA-MB-231 cells, followed by MCF-7, WiDr, and HepG2 cancer cells. In a cell injury assay using doxorubicin (DOX)-loaded APT/TSP liposomes and ultrasound irradiation, cell viability of MDA-MB-231 at 24h after ultrasound irradiation (1 MHz for 30 s at 0.5 W/cm(2)) with DOX-loaded APT/TSP liposomes was 60%, which was lower than that with ultrasound irradiation and DOX-loaded TSP liposomes or with DOX-loaded APT/TSP liposomes alone.
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Affiliation(s)
- Kazuaki Ninomiya
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - Takahiro Yamashita
- Division of Material Engineering, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - Shinya Kawabata
- Division of Material Engineering, Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa 920-1192, Japan
| | - Nobuaki Shimizu
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan.
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Abstract
Hyperthermia is considered to be a promising tool for the treatment of tumours. Intensive research activities reveal a distinct impact not only on the cellular level but also on tumour physiology which favours the combination with the classical oncologic modalities radio- and chemotherapy. Different techniques have been established so far. Among them, magnetic hyperthermia exploits the intrinsic magnetic properties of iron oxide nanoparticles (magnetite and maghemite) which induce heating during the exposure to an alternating magnetic field. Beyond the advantage that heating is generated within the tumour and not from outside the body, the amounts of magnetic material and their intratumoral distribution patterns are key factors determining the therapeutic outcome. They can be influenced by the use of different application routes, which will be discussed in this paper.
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Affiliation(s)
- Ingrid Hilger
- Department of Experimental Radiology, Institute of Diagnostic and Interventional Radiology, University Hospital Jena, Friedrich-Schiller Universität , Jena , Germany
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Ninomiya K, Kawabata S, Tashita H, Shimizu N. Ultrasound-mediated drug delivery using liposomes modified with a thermosensitive polymer. ULTRASONICS SONOCHEMISTRY 2014; 21:310-316. [PMID: 23948493 DOI: 10.1016/j.ultsonch.2013.07.014] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2013] [Revised: 07/21/2013] [Accepted: 07/24/2013] [Indexed: 06/02/2023]
Abstract
Ultrasound-mediated drug delivery was established using liposomes that were modified with the thermosensitive polymer (TSP) poly(NIPMAM-co-NIPAM), which sensitized the liposomes to high temperatures. TSP-modified liposomes (TSP liposomes) released encapsulated calcein under 1 MHz ultrasound irradiation at 0.5 W/cm(2) for 120 s as well as the case under incubation at 42 °C for 15 min. In addition, uptake of the drug released from TSP liposomes by cancer cells was enhanced by ultrasound irradiation. In a cell injury assay using doxorubicin (DOX)-loaded TSP liposomes and ultrasound irradiation, cell viability of HepG2 cells at 6 h after ultrasound irradiation (1 MHz, 0.5 W/cm(2) for 30 s) with DOX-loaded TSP liposomes (TSP/lipid ratio=1) was 60%, which was significantly lower than that of the control conditions such as DOX-loaded TSP liposomes alone and DOX-loaded intact liposomes under ultrasound irradiation.
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Affiliation(s)
- Kazuaki Ninomiya
- Institute of Nature and Environmental Technology, Kanazawa University, Kanazawa 920-1192, Japan
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Wang H, Liu Q, Zhang K, Wang P, Xue Q, Li L, Wang X. Comparison between sonodynamic and photodynamic effect on MDA-MB-231 cells. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2013; 127:182-91. [PMID: 24050992 DOI: 10.1016/j.jphotobiol.2013.08.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Revised: 08/23/2013] [Accepted: 08/23/2013] [Indexed: 11/28/2022]
Abstract
Photodynamic therapy (PDT) and sonodynamic therapy (SDT) are therapeutic modalities for tumors. In this study we investigated the combined cytotoxic effect of 0.36W/cm(2) and 0.72W/cm(2) ultrasound with various Ce6 concentrations (1, 2, 5, 10μg/ml), and that of 1μg/ml Ce6 with different laser light dose (650nm; 10.4mW/cm(2); 0.3, 0.6, 1.2 and 2.5J/cm(2)) on MDA-MB-231 cells. Both high reactive oxygen species (ROS) production and a decline in mitochondrial membrane potential (MMP) were detected with high Ce6 concentrations (5 and 10μg/ml) combined with 0.72W/cm(2) ultrasound and 1.2, 2.5J/cm(2) laser light with 1μg/ml Ce6. In addition, cell membrane integrity was evaluated by using propidium iodide (PI), revealing membrane damage was aggravated with the increasing ultrasound intensity, but no significant difference on cell membrane integrity could be observed after PDT treatment. These results suggest ROS may play an important role both in SDT and PDT. Besides, mitochondria may be an initial target in PDT while SDT can cause multi-site damages in MDA-MB-231 cells.
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Affiliation(s)
- Haiping Wang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry, Ministry of Education, National Engineering Laboratory for Resource Developing of Endangered Chinese Crude Drugs in Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi'an 710062, Shaanxi, China
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Oude Blenke E, Mastrobattista E, Schiffelers RM. Strategies for triggered drug release from tumor targeted liposomes. Expert Opin Drug Deliv 2013; 10:1399-410. [DOI: 10.1517/17425247.2013.805742] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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MRI-Guided Focused Ultrasound as a New Method of Drug Delivery. JOURNAL OF DRUG DELIVERY 2013; 2013:616197. [PMID: 23738076 PMCID: PMC3666208 DOI: 10.1155/2013/616197] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 02/05/2013] [Indexed: 02/01/2023]
Abstract
Ultrasound-mediated drug delivery under the guidance of an imaging modality can improve drug disposition and achieve site-specific drug delivery. The term focal drug delivery has been introduced to describe the focal targeting of drugs in tissues with the help of imaging and focused ultrasound. Focal drug delivery aims to improve the therapeutic profile of drugs by improving their specificity and their permeation in defined areas. Focused-ultrasound- (FUS-) mediated drug delivery has been applied with various molecules to improve their local distribution in tissues. FUS is applied with the aid of microbubbles to enhance the permeability of bioactive molecules across BBB and improve drug distribution in the brain. Recently, FUS has been utilised in combination with MRI-labelled liposomes that respond to temperature increase. This strategy aims to "activate" nanoparticles to release their cargo locally when triggered by hyperthermia induced by FUS. MRI-guided FUS drug delivery provides the opportunity to improve drug bioavailability locally and therefore improve the therapeutic profiles of drugs. This drug delivery strategy can be directly translated to clinic as MRg FUS is a promising clinically therapeutic approach. However, more basic research is required to understand the physiological mechanism of FUS-enhanced drug delivery.
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Li YH, Jin LF, Du LF, Shi QS, Liu L, Jia X, Wu Y, Li F, Wang HH. Enhancing HSP70-ShRNA transfection in 22RV1 prostate cancer cells by combination of sonoporation, liposomes and HTERT/CMV chimeric promoter. Int J Oncol 2013; 43:151-8. [PMID: 23620085 DOI: 10.3892/ijo.2013.1921] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Accepted: 04/10/2013] [Indexed: 11/06/2022] Open
Abstract
Gene therapy is a potentially viable approach for treating hormone-refractory prostate cancer (HRPC), it requires efficient delivery systems and a target gene. Inducing carcinoma cell apoptosis by inhibition of heat shock protein 70 (HSP70) overexpression has been emerging as an attractive strategy for cancer therapy. In our study, the high tumor-specificity of human telomerase reverse transcriptase (HTERT) expression prompted the use of an HTERT/cytomegalovirus (CMV) chimeric promoter to drive HSP70-ShRNA expression to induce HRPC 22RV1 cell apoptosis. At the same time, sonoporation induced by ultrasound-targeted microbubble destruction (UTMD) was utilized for delivery of plasmid loaded with HTERT/CMV promoter. Our results indicated the combination of sonoporation, low-dose liposomes and HTERT/CMV chimeric promoter as a delivery system has the potential to promote efficient gene transfer with lower cytotoxicity.
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Affiliation(s)
- Yun Hua Li
- Department of Ultrasound, Shanghai First People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200080, P.R. China
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Sutton JT, Haworth KJ, Pyne-Geithman G, Holland CK. Ultrasound-mediated drug delivery for cardiovascular disease. Expert Opin Drug Deliv 2013; 10:573-92. [PMID: 23448121 DOI: 10.1517/17425247.2013.772578] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
INTRODUCTION Ultrasound (US) has been developed as both a valuable diagnostic tool and a potent promoter of beneficial tissue bioeffects for the treatment of cardiovascular disease. These effects can be mediated by mechanical oscillations of circulating microbubbles, or US contrast agents, which may also encapsulate and shield a therapeutic agent in the bloodstream. Oscillating microbubbles can create stresses directly on nearby tissue or induce fluid effects that effect drug penetration into vascular tissue, lyse thrombi or direct drugs to optimal locations for delivery. AREAS COVERED The present review summarizes investigations that have provided evidence for US-mediated drug delivery as a potent method to deliver therapeutics to diseased tissue for cardiovascular treatment. In particular, the focus will be on investigations of specific aspects relating to US-mediated drug delivery, such as delivery vehicles, drug transport routes, biochemical mechanisms and molecular targeting strategies. EXPERT OPINION These investigations have spurred continued research into alternative therapeutic applications, such as bioactive gas delivery and new US technologies. Successful implementation of US-mediated drug delivery has the potential to change the way many drugs are administered systemically, resulting in more effective and economical therapeutics, and less-invasive treatments.
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Affiliation(s)
- Jonathan T Sutton
- University of Cincinnati, College of Medicine, Internal Medicine, Division of Cardiovascular Diseases, and Biomedical Engineering Program, Cincinnati, OH, USA
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