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Lin CW, Fan CH, Yeh CK. The relationship between surface drug distribution of Dox-loaded microbubbles and drug release/cavitation behaviors with ultrasound. ULTRASONICS SONOCHEMISTRY 2024; 102:106728. [PMID: 38103369 PMCID: PMC10765110 DOI: 10.1016/j.ultsonch.2023.106728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 11/23/2023] [Accepted: 12/12/2023] [Indexed: 12/19/2023]
Abstract
Ultrasound (US)-triggered microbubbles (MBs) drug delivery is a promising tool for noninvasive and localized therapy. Several studies have shown the potential of drug-loaded MBs to boost the delivery of therapeutic substances to target tissue effectively. Nevertheless, little is known about the surface payload distribution affecting the cavitation activity and drug release behavior of the drug-loaded MBs. In this study, we designed a common chemodrug (Doxorubicin, Dox)-loaded MB (Dox-MBs) and regulated the payload distribution as uniform or cluster onto the outer surface of MBs. The Dox distribution on the MB shells was assessed by confocal fluorescence microscopic imaging. The acoustic properties of the Dox-MBs with different Dox distributions were evaluated by their acoustic stability and cavitation activities. The payload release and the fragments from Dox-MBs in response to different US parameters were measured and visualized by column chromatography and cryo-electron microscopy, respectively. By amalgamating these methodologies, we found that stable cavitation was sufficient for triggering uniform-loaded MBs to release their payload, but stable cavitation and inertial cavitation were required for cluster-loaded MBs. The released substances included free Dox and Dox-containing micelle/liposome; their portions depended on the payload distribution, acoustic pressure, cycle number, and sonication duration. Furthermore, we also revealed that the Dox-containing micelle/liposome in cluster-loaded MBs had the potential for multiple drug releases upon US sonication. This study compared uniform-loaded MBs and cluster-loaded MBs to enhance our comprehension of drug-loaded MBs mediated drug delivery.
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Affiliation(s)
- Chia-Wei Lin
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan
| | - Ching-Hsiang Fan
- Department of Biomedical Engineering, National Cheng Kung University, Tainan, Taiwan; Medical Device Innovation Center, National Cheng Kung University, Tainan, Taiwan
| | - Chih-Kuang Yeh
- Department of Biomedical Engineering and Environmental Sciences, National Tsing Hua University, Hsinchu, Taiwan.
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2
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Park JR, Kim G, Won J, Kim CW, Park D. Evaluation of Doxorubicin-loaded Echogenic Macroemulsion for Targeted Drug Delivery. Curr Drug Deliv 2024; 21:785-793. [PMID: 37016528 DOI: 10.2174/1567201820666230403111118] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/26/2023] [Accepted: 02/06/2023] [Indexed: 04/06/2023]
Abstract
BACKGROUND The latest technology trend in targeted drug delivery highlights stimuliresponsive particles that can release an anticancer drug in a solid tumor by responding to external stimuli. OBJECTIVE This study aims to design, fabricate, and evaluate an ultrasound-responsive drug delivery vehicle for an ultrasound-mediated drug delivery system. METHODS The drug-containing echogenic macroemulsion (eME) was fabricated by an emulsification method using the three phases (aqueous lipid solution as a shell, doxorubicin (DOX) contained oil, and perfluorohexane (PFH) as an ultrasound-responsive agent). The morphological structure of eMEs was investigated using fluorescence microscopy, and the size distribution was analyzed by using DLS. The echogenicity of eME was measured using a contrast-enhanced ultrasound device. The cytotoxicity was evaluated using a breast cancer cell (MDA-MB-231) via an in vitro cell experiment. RESULTS The obtained eME showed an ideal morphological structure that contained both DOX and PFH in a single particle and indicated a suitable size for enhancing ultrasound response and avoiding complications in the blood vessel. The echogenicity of eME was demonstrated via an in vitro experiment, with results showcasing the potential for targeted drug delivery. Compared to free DOX, enhanced cytotoxicity and improved drug delivery efficiency in a cancer cell were proven by using DOX-loaded eMEs and ultrasound. CONCLUSION This study established a platform technology to fabricate the ultrasound-responsive vehicle. The designed drug-loaded eME could be a promising platform with ultrasound technology for targeted drug delivery.
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Affiliation(s)
- Jong-Ryul Park
- BioInfra Life Science Inc., 524, Cancer Research Institute, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, South Korea
| | - Gayoung Kim
- BioInfra Life Science Inc., 524, Cancer Research Institute, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, South Korea
| | - Jongho Won
- BioInfra Life Science Inc., 524, Cancer Research Institute, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, South Korea
| | - Chul-Woo Kim
- BioInfra Life Science Inc., 524, Cancer Research Institute, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, South Korea
| | - Donghee Park
- BioInfra Life Science Inc., 524, Cancer Research Institute, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, South Korea
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3
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Lee J, Um W, Moon H, Joo H, Song Y, Park M, Yoon B, Kim HR, Park JH. Evading Doxorubicin-Induced Systemic Immunosuppression Using Ultrasound-Responsive Liposomes Combined with Focused Ultrasound. Pharmaceutics 2022; 14:pharmaceutics14122603. [PMID: 36559097 PMCID: PMC9784431 DOI: 10.3390/pharmaceutics14122603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/11/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Doxorubicin (DOX) is a representative anticancer drug with a unique ability to induce immunogenic cell death of cancer cells. However, undesired toxicity on immune cells has remained a significant challenge, hindering the usage of DOX in cancer immunotherapy. Here, we report a combined therapy to avoid the off-target toxicity of DOX by adapting ultrasound-responsive liposomal doxorubicin and focused ultrasound exposure. Histological analysis demonstrated that the combined therapy induced less hemosiderosis of splenocytes and improved tumor infiltration of cytotoxic T lymphocytes. Additionally, in vivo therapeutic evaluation results indicate that the combined therapy achieved higher efficacy when combined with PD-1 immune-checkpoint blockade therapy by improving immunogenicity.
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Affiliation(s)
- Jeongjin Lee
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, 81 Irwon-ro, Seoul 06351, Republic of Korea
| | - Wooram Um
- Department of Biotechnology, Pukyong National University, 45 Yongso-ro, Busan 48513, Republic of Korea
| | - Hyungwon Moon
- R&D Center, IMGT Co., Ltd., 172 Dolma-ro, Seongnam 13605, Republic of Korea
| | - Hyeyeon Joo
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Suwon 16419, Republic of Korea
| | - Yeari Song
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Suwon 16419, Republic of Korea
| | - Minsung Park
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Suwon 16419, Republic of Korea
| | - Been Yoon
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Suwon 16419, Republic of Korea
| | - Hyun-Ryoung Kim
- R&D Center, IMGT Co., Ltd., 172 Dolma-ro, Seongnam 13605, Republic of Korea
- Correspondence: (H.-R.K.); (J.H.P.)
| | - Jae Hyung Park
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, 81 Irwon-ro, Seoul 06351, Republic of Korea
- School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Suwon 16419, Republic of Korea
- Correspondence: (H.-R.K.); (J.H.P.)
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4
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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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He J, Liu Z, Zhu X, Xia H, Gao H, Lu J. Ultrasonic Microbubble Cavitation Enhanced Tissue Permeability and Drug Diffusion in Solid Tumor Therapy. Pharmaceutics 2022; 14:1642. [PMID: 36015267 PMCID: PMC9414228 DOI: 10.3390/pharmaceutics14081642] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 07/31/2022] [Accepted: 08/04/2022] [Indexed: 01/21/2023] Open
Abstract
Chemotherapy has an essential role not only in advanced solid tumor therapy intervention but also in society's health at large. Chemoresistance, however, seriously restricts the efficiency and sensitivity of chemotherapeutic agents, representing a significant threat to patients' quality of life and life expectancy. How to reverse chemoresistance, improve efficacy sensitization response, and reduce adverse side effects need to be tackled urgently. Recently, studies on the effect of ultrasonic microbubble cavitation on enhanced tissue permeability and retention (EPR) have attracted the attention of researchers. Compared with the traditional targeted drug delivery regimen, the microbubble cavitation effect, which can be used to enhance the EPR effect, has the advantages of less trauma, low cost, and good sensitization effect, and has significant application prospects. This article reviews the research progress of ultrasound-mediated microbubble cavitation in the treatment of solid tumors and discusses its mechanism of action to provide new ideas for better treatment strategies.
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Affiliation(s)
- Jide He
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Zenan Liu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Xuehua Zhu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Haizhui Xia
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
| | - Huile Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610064, China
| | - Jian Lu
- Department of Urology, Peking University Third Hospital, Beijing 100191, China
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Application of Ultrasound Combined with Microbubbles for Cancer Therapy. Int J Mol Sci 2022; 23:ijms23084393. [PMID: 35457210 PMCID: PMC9026557 DOI: 10.3390/ijms23084393] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/29/2022] [Accepted: 03/30/2022] [Indexed: 02/07/2023] Open
Abstract
At present, cancer is one of the leading causes of death worldwide. Treatment failure remains one of the prime hurdles in cancer treatment due to the metastatic nature of cancer. Techniques have been developed to hinder the growth of tumours or at least to stop the metastasis process. In recent years, ultrasound therapy combined with microbubbles has gained immense success in cancer treatment. Ultrasound-stimulated microbubbles (USMB) combined with other cancer treatments including radiation therapy, chemotherapy or immunotherapy has demonstrated potential improved outcomes in various in vitro and in vivo studies. Studies have shown that low dose radiation administered with USMB can have similar effects as high dose radiation therapy. In addition, the use of USMB in conjunction with radiotherapy or chemotherapy can minimize the toxicity of high dose radiation or chemotherapeutic drugs, respectively. In this review, we discuss the biophysical properties of USMB treatment and its applicability in cancer therapy. In particular, we highlight important preclinical and early clinical findings that demonstrate the antitumour effect combining USMB and other cancer treatment modalities (radiotherapy and chemotherapy). Our review mainly focuses on the tumour vascular effects mediated by USMB and these cancer therapies. We also discuss several current limitations, in addition to ongoing and future efforts for applying USMB in cancer treatment.
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7
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Ingram N, McVeigh LE, Abou-Saleh RH, Batchelor DVB, Loadman PM, McLaughlan JR, Markham AF, Evans SD, Coletta PL. A Single Short 'Tone Burst' Results in Optimal Drug Delivery to Tumours Using Ultrasound-Triggered Therapeutic Microbubbles. Pharmaceutics 2022; 14:pharmaceutics14030622. [PMID: 35335995 PMCID: PMC8953493 DOI: 10.3390/pharmaceutics14030622] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/04/2022] [Accepted: 03/09/2022] [Indexed: 12/10/2022] Open
Abstract
Advanced drug delivery systems, such as ultrasound-mediated drug delivery, show great promise for increasing the therapeutic index. Improvements in delivery by altering the ultrasound parameters have been studied heavily in vitro but relatively little in vivo. Here, the same therapeutic microbubble and tumour type are used to determine whether altering ultrasound parameters can improve drug delivery. Liposomes were loaded with SN38 and attached via avidin: biotin linkages to microbubbles. The whole structure was targeted to the tumour vasculature by the addition of anti-vascular endothelial growth factor receptor 2 antibodies. Tumour drug delivery and metabolism were quantified in SW480 xenografts after application of an ultrasound trigger to the tumour region. Increasing the trigger duration from 5 s to 2 min or increasing the number of 5 s triggers did not improve drug delivery, nor did changing to a chirp trigger designed to stimulate a greater proportion of the microbubble population, although this did show that the short tone trigger resulted in greater release of free SN38. Examination of ultrasound triggers in vivo to improve drug delivery is justified as there are multiple mechanisms at play that may not allow direct translation from in vitro findings. In this setting, a short tone burst gives the best ultrasound parameters for tumoural drug delivery.
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Affiliation(s)
- Nicola Ingram
- Leeds Institute of Medical Research, Faculty of Medicine and Health, St James’s University Hospital, Beckett Street, Leeds LS9 7TF, UK; (L.E.M.); (J.R.M.); (A.F.M.)
- Correspondence: (N.I.); (P.L.C.)
| | - Laura E. McVeigh
- Leeds Institute of Medical Research, Faculty of Medicine and Health, St James’s University Hospital, Beckett Street, Leeds LS9 7TF, UK; (L.E.M.); (J.R.M.); (A.F.M.)
| | - Radwa H. Abou-Saleh
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK; (R.H.A.-S.); (D.V.B.B.); (S.D.E.)
- Nanoscience and Technology Group, Faculty of Science, Galala University, Galala 43711, Egypt
- Department of Physics, Mansoura University, Mansoura 35516, Egypt
| | - Damien V. B. Batchelor
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK; (R.H.A.-S.); (D.V.B.B.); (S.D.E.)
| | - Paul M. Loadman
- Institute of Cancer Therapeutics, University of Bradford, Bradford BD7 1DP, UK;
| | - James R. McLaughlan
- Leeds Institute of Medical Research, Faculty of Medicine and Health, St James’s University Hospital, Beckett Street, Leeds LS9 7TF, UK; (L.E.M.); (J.R.M.); (A.F.M.)
- School of Electronic and Electrical Engineering, University of Leeds, Leeds LS2 9JT, UK
| | - Alexander F. Markham
- Leeds Institute of Medical Research, Faculty of Medicine and Health, St James’s University Hospital, Beckett Street, Leeds LS9 7TF, UK; (L.E.M.); (J.R.M.); (A.F.M.)
| | - Stephen D. Evans
- School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK; (R.H.A.-S.); (D.V.B.B.); (S.D.E.)
| | - P. Louise Coletta
- Leeds Institute of Medical Research, Faculty of Medicine and Health, St James’s University Hospital, Beckett Street, Leeds LS9 7TF, UK; (L.E.M.); (J.R.M.); (A.F.M.)
- Correspondence: (N.I.); (P.L.C.)
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8
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Evaluation of Liposome-Loaded Microbubbles as a Theranostic Tool in a Murine Collagen-Induced Arthritis Model. Sci Pharm 2022. [DOI: 10.3390/scipharm90010017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Rheumatoid arthritis (RA) is an autoimmune disease characterized by severe inflammation of the synovial tissue. Here, we assess the feasibility of liposome-loaded microbubbles as theranostic agents in a murine arthritis model. First, contrast-enhanced ultrasound (CEUS) was used to quantify neovascularization in this model since CEUS is well-established for RA diagnosis in humans. Next, the potential of liposome-loaded microbubbles and ultrasound (US) to selectively enhance liposome delivery to the synovium was evaluated with in vivo fluorescence imaging. This procedure is made very challenging by the presence of hard joints and by the limited lifetime of the microbubbles. The inflamed knee joints were exposed to therapeutic US after intravenous injection of liposome-loaded microbubbles. Loaded microbubbles were found to be quickly captured by the liver. This resulted in fast clearance of attached liposomes while free and long-circulating liposomes were able to accumulate over time in the inflamed joints. Our observations show that murine arthritis models are not well-suited for evaluating the potential of microbubble-mediated drug delivery in joints given: (i) restricted microbubble passage in murine synovial vasculature and (ii) limited control over the exact ultrasound conditions in situ given the much shorter length scale of the murine joints as compared to the therapeutic wavelength.
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Tehrani Fateh S, Moradi L, Kohan E, Hamblin MR, Shiralizadeh Dezfuli A. Comprehensive review on ultrasound-responsive theranostic nanomaterials: mechanisms, structures and medical applications. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2021; 12:808-862. [PMID: 34476167 PMCID: PMC8372309 DOI: 10.3762/bjnano.12.64] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 07/15/2021] [Indexed: 05/03/2023]
Abstract
The field of theranostics has been rapidly growing in recent years and nanotechnology has played a major role in this growth. Nanomaterials can be constructed to respond to a variety of different stimuli which can be internal (enzyme activity, redox potential, pH changes, temperature changes) or external (light, heat, magnetic fields, ultrasound). Theranostic nanomaterials can respond by producing an imaging signal and/or a therapeutic effect, which frequently involves cell death. Since ultrasound (US) is already well established as a clinical imaging modality, it is attractive to combine it with rationally designed nanoparticles for theranostics. The mechanisms of US interactions include cavitation microbubbles (MBs), acoustic droplet vaporization, acoustic radiation force, localized thermal effects, reactive oxygen species generation, sonoluminescence, and sonoporation. These effects can result in the release of encapsulated drugs or genes at the site of interest as well as cell death and considerable image enhancement. The present review discusses US-responsive theranostic nanomaterials under the following categories: MBs, micelles, liposomes (conventional and echogenic), niosomes, nanoemulsions, polymeric nanoparticles, chitosan nanocapsules, dendrimers, hydrogels, nanogels, gold nanoparticles, titania nanostructures, carbon nanostructures, mesoporous silica nanoparticles, fuel-free nano/micromotors.
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Affiliation(s)
- Sepand Tehrani Fateh
- School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Lida Moradi
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Elmira Kohan
- Department of Science, University of Kurdistan, Kurdistan, Sanandaj, Iran
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa
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Wu H, Zhou Y, Xu L, Tong L, Wang Y, Liu B, Yan H, Sun Z. Mapping Knowledge Structure and Research Frontiers of Ultrasound-Induced Blood-Brain Barrier Opening: A Scientometric Study. Front Neurosci 2021; 15:706105. [PMID: 34335175 PMCID: PMC8316975 DOI: 10.3389/fnins.2021.706105] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Accepted: 06/11/2021] [Indexed: 12/12/2022] Open
Abstract
Background: Among the effective approaches developed for blood-brain barrier (BBB) opening, ultrasound is recognized as a non-invasive technique that can induce localized BBB opening transiently and repeatedly. This technique has aroused broad attention from researchers worldwide, and numerous articles have been published recently. However, no existing study has systematically examined this field from a scientometric perspective. The aim of this study was to summarize the knowledge structure and identify emerging trends and potential hotspots in this field. Methods: Publications related to ultrasound-induced BBB opening published from 1998 to 2020 were retrieved from Web of Science Core Collection. The search strategies were as follows: topic: ("blood brain barrier" OR "BBB") AND topic: (ultrasound OR ultrason* OR acoustic* OR sonopora*). The document type was set to articles or reviews with language restriction to English. Three different analysis tools including one online platform, VOS viewer1.6.16, and CiteSpace V5.7.R2 software were used to conduct this scientometric study. Results: A total of 1,201 valid records were included in the final analysis. The majority of scientific publication was produced by authors from North America, Eastern Asia, and Western Europe. Ultrasound in Medicine and Biology was the most prominent journal. The USA, China, and Canada were the most productive countries. Hynynen K, and Mcdannold N were key researchers with considerable academic influence. According to analysis of keywords, four main research directions were identified: cluster 1 (microbubbles study), cluster 2 (management of intracranial tumors), cluster 3 (ultrasound parameters and mechanisms study), and cluster 4 (treatment of neurodegenerative diseases). The current research hotspot has shifted from the basic research of ultrasound and microbubbles to management of intracranial tumors and neurodegenerative diseases. Burst detection analysis showed that Parkinson's disease, doxorubicin, gold nanoparticle, glioblastoma, gene therapy, and Alzheimer's disease may continue to be the research frontiers. Conclusion: Ultrasound-induced BBB opening research is in a period of robust development. This study is a starting point, providing a comprehensive overview, development landscape, and future opportunities of this technology, which standout as a useful reference for researchers and decision makers interested in this area.
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Affiliation(s)
- Haiyang Wu
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Yan Zhou
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Lixia Xu
- Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin, China
| | - Linjian Tong
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Yulin Wang
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Baolong Liu
- Department of Ultrasound, Tianjin Huanhu Hospital, Tianjin, China
| | - Hua Yan
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin, China
| | - Zhiming Sun
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China.,Department of Spine and Spinal Cord, Tianjin Huanhu Hospital, Tianjin, China
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11
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Sanwal R, Joshi K, Ditmans M, Tsai SSH, Lee WL. Ultrasound and Microbubbles for Targeted Drug Delivery to the Lung Endothelium in ARDS: Cellular Mechanisms and Therapeutic Opportunities. Biomedicines 2021; 9:biomedicines9070803. [PMID: 34356867 PMCID: PMC8301318 DOI: 10.3390/biomedicines9070803] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Revised: 06/27/2021] [Accepted: 07/07/2021] [Indexed: 12/16/2022] Open
Abstract
Acute respiratory distress syndrome (ARDS) is characterized by increased permeability of the alveolar–capillary membrane, a thin barrier composed of adjacent monolayers of alveolar epithelial and lung microvascular endothelial cells. This results in pulmonary edema and severe hypoxemia and is a common cause of death after both viral (e.g., SARS-CoV-2) and bacterial pneumonia. The involvement of the lung in ARDS is notoriously heterogeneous, with consolidated and edematous lung abutting aerated, less injured regions. This makes treatment difficult, as most therapeutic approaches preferentially affect the normal lung regions or are distributed indiscriminately to other organs. In this review, we describe the use of thoracic ultrasound and microbubbles (USMB) to deliver therapeutic cargo (drugs, genes) preferentially to severely injured areas of the lung and in particular to the lung endothelium. While USMB has been explored in other organs, it has been under-appreciated in the treatment of lung injury since ultrasound energy is scattered by air. However, this limitation can be harnessed to direct therapy specifically to severely injured lungs. We explore the cellular mechanisms governing USMB and describe various permutations of cargo administration. Lastly, we discuss both the challenges and potential opportunities presented by USMB in the lung as a tool for both therapy and research.
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Affiliation(s)
- Rajiv Sanwal
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1T8, Canada; (R.S.); (K.J.); (M.D.); (S.S.H.T.)
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Kushal Joshi
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1T8, Canada; (R.S.); (K.J.); (M.D.); (S.S.H.T.)
- Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
- Institute of Biomedical Engineering, Science and Technology (iBEST), Toronto, ON M5B 1T8, Canada
| | - Mihails Ditmans
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1T8, Canada; (R.S.); (K.J.); (M.D.); (S.S.H.T.)
- Biomedical Engineering Graduate Program, Ryerson University, Toronto, ON M5B 2K3, Canada
| | - Scott S. H. Tsai
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1T8, Canada; (R.S.); (K.J.); (M.D.); (S.S.H.T.)
- Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
- Institute of Biomedical Engineering, Science and Technology (iBEST), Toronto, ON M5B 1T8, Canada
| | - Warren L. Lee
- Keenan Research Centre for Biomedical Science, St. Michael’s Hospital, Unity Health Toronto, Toronto, ON M5B 1T8, Canada; (R.S.); (K.J.); (M.D.); (S.S.H.T.)
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Mechanical and Industrial Engineering, Ryerson University, Toronto, ON M5B 2K3, Canada
- Institute of Biomedical Engineering, Science and Technology (iBEST), Toronto, ON M5B 1T8, Canada
- Biomedical Engineering Graduate Program, Ryerson University, Toronto, ON M5B 2K3, Canada
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON M5S 1A1, Canada
- Correspondence: ; Tel.: +416-864-6060 (ext. 77655)
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12
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Jangjou A, Meisami AH, Jamali K, Niakan MH, Abbasi M, Shafiee M, Salehi M, Hosseinzadeh A, Amani AM, Vaez A. The promising shadow of microbubble over medical sciences: from fighting wide scope of prevalence disease to cancer eradication. J Biomed Sci 2021; 28:49. [PMID: 34154581 PMCID: PMC8215828 DOI: 10.1186/s12929-021-00744-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Accepted: 06/10/2021] [Indexed: 12/29/2022] Open
Abstract
Microbubbles are typically 0.5-10 μm in size. Their size tends to make it easier for medication delivery mechanisms to navigate the body by allowing them to be swallowed more easily. The gas included in the microbubble is surrounded by a membrane that may consist of biocompatible biopolymers, polymers, surfactants, proteins, lipids, or a combination thereof. One of the most effective implementation techniques for tiny bubbles is to apply them as a drug carrier that has the potential to activate ultrasound (US); this allows the drug to be released by US. Microbubbles are often designed to preserve and secure medicines or substances before they have reached a certain area of concern and, finally, US is used to disintegrate microbubbles, triggering site-specific leakage/release of biologically active drugs. They have excellent therapeutic potential in a wide range of common diseases. In this article, we discussed microbubbles and their advantageous medicinal uses in the treatment of certain prevalent disorders, including Parkinson's disease, Alzheimer's disease, cardiovascular disease, diabetic condition, renal defects, and finally, their use in the treatment of various forms of cancer as well as their incorporation with nanoparticles. Using microbubble technology as a novel carrier, the ability to prevent and eradicate prevalent diseases has strengthened the promise of effective care to improve patient well-being and life expectancy.
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Affiliation(s)
- Ali Jangjou
- Department of Emergency Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Hossein Meisami
- Department of Emergency Medicine, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Kazem Jamali
- Trauma Research Center, Shahid Rajaee (Emtiaz) Trauma Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Hadi Niakan
- Trauma Research Center, Shahid Rajaee (Emtiaz) Trauma Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Milad Abbasi
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mostafa Shafiee
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Majid Salehi
- Department of Tissue Engineering, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
- Tissue Engineering and Stem Cells Research Center, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ahmad Hosseinzadeh
- Thoracic and Vascular Surgery Research Center, Nemazee Hospital, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Mohammad Amani
- Department of Medical Nanotechnology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Vaez
- Department of Tissue Engineering and Applied Cell Sciences, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
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13
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Deprez J, Lajoinie G, Engelen Y, De Smedt SC, Lentacker I. Opening doors with ultrasound and microbubbles: Beating biological barriers to promote drug delivery. Adv Drug Deliv Rev 2021; 172:9-36. [PMID: 33705877 DOI: 10.1016/j.addr.2021.02.015] [Citation(s) in RCA: 101] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 02/01/2021] [Accepted: 02/17/2021] [Indexed: 12/13/2022]
Abstract
Apart from its clinical use in imaging, ultrasound has been thoroughly investigated as a tool to enhance drug delivery in a wide variety of applications. Therapeutic ultrasound, as such or combined with cavitating nuclei or microbubbles, has been explored to cross or permeabilize different biological barriers. This ability to access otherwise impermeable tissues in the body makes the combination of ultrasound and therapeutics very appealing to enhance drug delivery in situ. This review gives an overview of the most important biological barriers that can be tackled using ultrasound and aims to provide insight on how ultrasound has shown to improve accessibility as well as the biggest hurdles. In addition, we discuss the clinical applicability of therapeutic ultrasound with respect to the main challenges that must be addressed to enable the further progression of therapeutic ultrasound towards an effective, safe and easy-to-use treatment tailored for drug delivery in patients.
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Affiliation(s)
- J Deprez
- Ghent Research Group on Nanomedicines, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - G Lajoinie
- Physics of Fluids Group, MESA+ Institute for Nanotechnology and Technical Medical (TechMed) Center, University of Twente, P.O. Box 217, 7500 AE Enschede, Netherlands
| | - Y Engelen
- Ghent Research Group on Nanomedicines, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - S C De Smedt
- Ghent Research Group on Nanomedicines, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
| | - I Lentacker
- Ghent Research Group on Nanomedicines, Department of Pharmaceutics, Ghent University, Ottergemsesteenweg 460, 9000 Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent, Belgium
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14
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Wu H, Tong L, Wang Y, Yan H, Sun Z. Bibliometric Analysis of Global Research Trends on Ultrasound Microbubble: A Quickly Developing Field. Front Pharmacol 2021; 12:646626. [PMID: 33967783 PMCID: PMC8101552 DOI: 10.3389/fphar.2021.646626] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Accepted: 03/03/2021] [Indexed: 12/12/2022] Open
Abstract
Background: Microbubbles are widely used as highly effective contrast agents to improve the diagnostic capability of ultrasound imaging. Mounting evidence suggests that ultrasound coupled with microbubbles has promising therapeutic applications in cancer, cardiovascular, and neurological disorders by acting as gene or drug carriers. The aim of this study was to identify the scientific output and activity related to ultrasound microbubble through bibliometric approaches. Methods: The literature related to ultrasound microbubble published between 1998 and 2019 was identified and selected from the Science Citation Index Expanded of Web of Science Core Collection on February 21, 2021. The Scopus database was also searched to validate the results and provided as supplementary material. Quantitative variables including number of publications and citations, H-index, and journal citation reports were analyzed by using Microsoft Excel 2019 and GraphPad Prism 8.0 software. VOS viewer and CiteSpace V were used to perform coauthorship, citation, co-citation, and co-occurrence analysis for countries/regions, institutions, authors, and keywords. Results: A total of 6088 publications from the WoSCC were included. The United States has made the largest contribution in this field, with the majority of publications (2090, 34.3%), citations (90,741, 46.6%), the highest H-index (138), and close collaborations with China and Canada. The most contributive institution was the University of Toronto. Professors De Jong N and Dayton P A have made great achievements in this field. However, the research cooperation between institutions and authors was relatively weak. All the studies could be divided into four clusters: "ultrasound diagnosis study," "microbubbles' characteristics study," "gene therapy study," and "drug delivery study." The average appearing years (AAY) of keywords in the cluster "drug delivery study" was more recent than other clusters. For promising hot spots, "doxorubicin" showed a relatively latest AAY of 2015.49, followed by "nanoparticles" and "breast cancer." Conclusion: There has been an increasing amount of scientific output on ultrasound microbubble according to the global trends, and the United States is staying ahead in this field. Collaboration between research teams still needs to be strengthened. The focus gradually shifts from "ultrasound diagnosis study" to "drug delivery study." It is recommended to pay attention to the latest hot spots, such as "doxorubicin," "nanoparticles," and "breast cancer."
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Affiliation(s)
- Haiyang Wu
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Linjian Tong
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Yulin Wang
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China
| | - Hua Yan
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China.,Tianjin Key Laboratory of Cerebral Vascular and Neurodegenerative Diseases, Tianjin Neurosurgical Institute, Tianjin Huanhu Hospital, Tianjin, China
| | - Zhiming Sun
- Clinical College of Neurology, Neurosurgery and Neurorehabilitation, Tianjin Medical University, Tianjin, China.,Department of Orthopaedic Surgery, Tianjin Huanhu Hospital, Tianjin, China
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15
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Awad N, Paul V, AlSawaftah NM, ter Haar G, Allen TM, Pitt WG, Husseini GA. Ultrasound-Responsive Nanocarriers in Cancer Treatment: A Review. ACS Pharmacol Transl Sci 2021; 4:589-612. [PMID: 33860189 PMCID: PMC8033618 DOI: 10.1021/acsptsci.0c00212] [Citation(s) in RCA: 55] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Indexed: 12/13/2022]
Abstract
The safe and effective delivery of anticancer agents to diseased tissues is one of the significant challenges in cancer therapy. Conventional anticancer agents are generally cytotoxins with poor pharmacokinetics and bioavailability. Nanocarriers are nanosized particles designed for the selectivity of anticancer drugs and gene transport to tumors. They are small enough to extravasate into solid tumors, where they slowly release their therapeutic load by passive leakage or biodegradation. Using smart nanocarriers, the rate of release of the entrapped therapeutic(s) can be increased, and greater exposure of the tumor cells to the therapeutics can be achieved when the nanocarriers are exposed to certain internally (enzymes, pH, and temperature) or externally (light, magnetic field, and ultrasound) applied stimuli that trigger the release of their load in a safe and controlled manner, spatially and temporally. This review gives a comprehensive overview of recent research findings on the different types of stimuli-responsive nanocarriers and their application in cancer treatment with a particular focus on ultrasound.
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Affiliation(s)
- Nahid
S. Awad
- Department
of Chemical Engineering, American University
of Sharjah, Sharjah, United Arab Emirates
| | - Vinod Paul
- Department
of Chemical Engineering, American University
of Sharjah, Sharjah, United Arab Emirates
| | - Nour M. AlSawaftah
- Department
of Chemical Engineering, American University
of Sharjah, Sharjah, United Arab Emirates
| | - Gail ter Haar
- Joint
Department of Physics, The Institute of
Cancer Research and The Royal Marsden NHS Foundation Trust, London SM2 5NG, U.K.
| | - Theresa M. Allen
- Department
of Pharmacology, University of Alberta, Edmonton, Alberta T6G 2R3, Canada
| | - William G. Pitt
- Department
of Chemical Engineering, Brigham Young University, Provo, Utah 84602, United States
| | - Ghaleb A. Husseini
- Department
of Chemical Engineering, American University
of Sharjah, Sharjah, United Arab Emirates
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16
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Ultrasound and microbubbles (USMB) potentiated doxorubicin penetration and distribution in 3D breast tumour spheroids. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102261] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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17
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Xiaoting ZBS, Zhifei DP. Micro/Nanobubbles Driven Multimodal Imaging and Theragnostics of Cancer. ADVANCED ULTRASOUND IN DIAGNOSIS AND THERAPY 2021. [DOI: 10.37015/audt.2021.200053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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18
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Recent advances in ultrasound-triggered drug delivery through lipid-based nanomaterials. Drug Discov Today 2020; 25:2182-2200. [PMID: 33010479 DOI: 10.1016/j.drudis.2020.09.026] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 07/24/2020] [Accepted: 09/22/2020] [Indexed: 12/28/2022]
Abstract
The high prescribed dose of anticancer drugs and their resulting adverse effects on healthy tissue are significant drawbacks to conventional chemotherapy (CTP). Ideally, drugs should have the lowest possible degree of interaction with healthy cells, which would diminish any adverse effects. Therefore, an ideal scenario to bring about improvements in CTP is the use of technological strategies to ensure the efficient, specific, and selective transport and/or release of drugs to the target site. One practical and feasible solution to promote the efficiency of conventional CTP is the use of ultrasound (US). In this review, we highlight the potential role of US in combination with lipid-based carriers to achieve a targeted CTP strategy in engineered smart drug delivery systems.
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19
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Ingram N, McVeigh LE, Abou-Saleh RH, Maynard J, Peyman SA, McLaughlan JR, Fairclough M, Marston G, Valleley EMA, Jimenez-Macias JL, Charalambous A, Townley W, Haddrick M, Wierzbicki A, Wright A, Volpato M, Simpson PB, Treanor DE, Thomson NH, Loadman PM, Bushby RJ, Johnson BR, Jones PF, Evans JA, Freear S, Markham AF, Evans SD, Coletta PL. Ultrasound-triggered therapeutic microbubbles enhance the efficacy of cytotoxic drugs by increasing circulation and tumor drug accumulation and limiting bioavailability and toxicity in normal tissues. Theranostics 2020; 10:10973-10992. [PMID: 33042265 PMCID: PMC7532679 DOI: 10.7150/thno.49670] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/14/2020] [Indexed: 12/12/2022] Open
Abstract
Most cancer patients receive chemotherapy at some stage of their treatment which makes improving the efficacy of cytotoxic drugs an ongoing and important goal. Despite large numbers of potent anti-cancer agents being developed, a major obstacle to clinical translation remains the inability to deliver therapeutic doses to a tumor without causing intolerable side effects. To address this problem, there has been intense interest in nanoformulations and targeted delivery to improve cancer outcomes. The aim of this work was to demonstrate how vascular endothelial growth factor receptor 2 (VEGFR2)-targeted, ultrasound-triggered delivery with therapeutic microbubbles (thMBs) could improve the therapeutic range of cytotoxic drugs. Methods: Using a microfluidic microbubble production platform, we generated thMBs comprising VEGFR2-targeted microbubbles with attached liposomal payloads for localised ultrasound-triggered delivery of irinotecan and SN38 in mouse models of colorectal cancer. Intravenous injection into tumor-bearing mice was used to examine targeting efficiency and tumor pharmacodynamics. High-frequency ultrasound and bioluminescent imaging were used to visualise microbubbles in real-time. Tandem mass spectrometry (LC-MS/MS) was used to quantitate intratumoral drug delivery and tissue biodistribution. Finally, 89Zr PET radiotracing was used to compare biodistribution and tumor accumulation of ultrasound-triggered SN38 thMBs with VEGFR2-targeted SN38 liposomes alone. Results: ThMBs specifically bound VEGFR2 in vitro and significantly improved tumor responses to low dose irinotecan and SN38 in human colorectal cancer xenografts. An ultrasound trigger was essential to achieve the selective effects of thMBs as without it, thMBs failed to extend intratumoral drug delivery or demonstrate enhanced tumor responses. Sensitive LC-MS/MS quantification of drugs and their metabolites demonstrated that thMBs extended drug exposure in tumors but limited exposure in healthy tissues, not exposed to ultrasound, by persistent encapsulation of drug prior to elimination. 89Zr PET radiotracing showed that the percentage injected dose in tumors achieved with thMBs was twice that of VEGFR2-targeted SN38 liposomes alone. Conclusions: thMBs provide a generic platform for the targeted, ultrasound-triggered delivery of cytotoxic drugs by enhancing tumor responses to low dose drug delivery via combined effects on circulation, tumor drug accumulation and exposure and altered metabolism in normal tissues.
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Affiliation(s)
- Nicola Ingram
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Laura E. McVeigh
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Radwa H. Abou-Saleh
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds, LS2 9JT, United Kingdom
- Department of Physics, Faculty of Science, Mansoura University, Egypt
| | - Juliana Maynard
- Medicines Discovery Catapult, Mereside, Alderley Park, Macclesfield, SK10 4TG, United Kingdom
| | - Sally A. Peyman
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds, LS2 9JT, United Kingdom
| | - James R. McLaughlan
- Faculty of Electronic and Electrical Engineering, University of Leeds, LS2 9JT, United Kingdom
| | - Michael Fairclough
- Wolfson Molecular Imaging Centre, University of Manchester, Palatine Road, Manchester, M20 3LI, United Kingdom
| | - Gemma Marston
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Elizabeth M. A. Valleley
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Jorge L. Jimenez-Macias
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Antonia Charalambous
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - William Townley
- Medicines Discovery Catapult, Mereside, Alderley Park, Macclesfield, SK10 4TG, United Kingdom
| | - Malcolm Haddrick
- Medicines Discovery Catapult, Mereside, Alderley Park, Macclesfield, SK10 4TG, United Kingdom
| | - Antonia Wierzbicki
- Institute of Cancer Therapeutics, University of Bradford, BD7 1DP, United Kingdom
| | - Alexander Wright
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Milène Volpato
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Peter B. Simpson
- Medicines Discovery Catapult, Mereside, Alderley Park, Macclesfield, SK10 4TG, United Kingdom
| | - Darren E. Treanor
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Neil H. Thomson
- School of Dentistry, Wellcome Trust Brenner Building, St. James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Paul M. Loadman
- Institute of Cancer Therapeutics, University of Bradford, BD7 1DP, United Kingdom
| | - Richard J. Bushby
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds, LS2 9JT, United Kingdom
- School of Chemistry, University of Leeds, Leeds, LS2 9JT, United Kingdom
| | - Benjamin R.G. Johnson
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds, LS2 9JT, United Kingdom
| | - Pamela F. Jones
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - J. Anthony Evans
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Steven Freear
- Faculty of Electronic and Electrical Engineering, University of Leeds, LS2 9JT, United Kingdom
| | - Alexander F. Markham
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
| | - Stephen D. Evans
- Molecular and Nanoscale Physics Group, School of Physics and Astronomy, University of Leeds, LS2 9JT, United Kingdom
| | - P. Louise Coletta
- Leeds Institute of Medical Research, Wellcome Trust Brenner Building, St James's University Hospital, Leeds, LS9 7TF, United Kingdom
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20
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Improved efficacy of doxorubicin delivery by a novel dual-ligand-modified liposome in hepatocellular carcinoma. Cancer Lett 2020; 489:163-173. [PMID: 32592729 DOI: 10.1016/j.canlet.2020.06.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 06/08/2020] [Accepted: 06/13/2020] [Indexed: 02/07/2023]
Abstract
Liposomes have been widely used as drug carriers in both biomedical research and for clinical applications, allowing the stabilisation of therapeutic compounds and overcoming obstacles to cellular and tissue uptake. However, liposomes still have low targeting efficiency, resulting in insufficient killing of tumour cells and unnecessary damage to normal cells. In this study, glycyrrhetinic acid (GA) and peanut agglutinin (PNA) were used as ligands to prepare dual-ligand-modified doxorubicin-loaded liposomes (DOX-GA/PNA-Lips) to enhance the targeting accuracy and efficacy of drug delivery against malignant liver cancer. PNA and GA modification enhanced the binding ability of liposomes to liver cancer cells, leading to excellent tissue and cell targeting of DOX-GA/PNA-Lips. DOX-GA/PNA-Lips showed an effective anti-tumour effect in vivo and in vitro, with its targeted delivery facilitating attenuation of the toxic side effects of DOX. These results demonstrated that dual-ligand-modified liposomes may provide an effective strategy for the treatment of hepatocellular carcinoma.
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21
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Kooiman K, Roovers S, Langeveld SAG, Kleven RT, Dewitte H, O'Reilly MA, Escoffre JM, Bouakaz A, Verweij MD, Hynynen K, Lentacker I, Stride E, Holland CK. Ultrasound-Responsive Cavitation Nuclei for Therapy and Drug Delivery. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:1296-1325. [PMID: 32165014 PMCID: PMC7189181 DOI: 10.1016/j.ultrasmedbio.2020.01.002] [Citation(s) in RCA: 174] [Impact Index Per Article: 43.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/20/2019] [Accepted: 01/07/2020] [Indexed: 05/03/2023]
Abstract
Therapeutic ultrasound strategies that harness the mechanical activity of cavitation nuclei for beneficial tissue bio-effects are actively under development. The mechanical oscillations of circulating microbubbles, the most widely investigated cavitation nuclei, which may also encapsulate or shield a therapeutic agent in the bloodstream, trigger and promote localized uptake. Oscillating microbubbles can create stresses either on nearby tissue or in surrounding fluid to enhance drug penetration and efficacy in the brain, spinal cord, vasculature, immune system, biofilm or tumors. This review summarizes recent investigations that have elucidated interactions of ultrasound and cavitation nuclei with cells, the treatment of tumors, immunotherapy, the blood-brain and blood-spinal cord barriers, sonothrombolysis, cardiovascular drug delivery and sonobactericide. In particular, an overview of salient ultrasound features, drug delivery vehicles, therapeutic transport routes and pre-clinical and clinical studies is provided. Successful implementation of ultrasound and cavitation nuclei-mediated drug delivery has the potential to change the way drugs are administered systemically, resulting in more effective therapeutics and less-invasive treatments.
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Affiliation(s)
- Klazina Kooiman
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.
| | - Silke Roovers
- Ghent Research Group on Nanomedicines, Lab for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, Ghent, Belgium
| | - Simone A G Langeveld
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands
| | - Robert T Kleven
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH, USA
| | - Heleen Dewitte
- Ghent Research Group on Nanomedicines, Lab for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, Ghent, Belgium; Laboratory for Molecular and Cellular Therapy, Medical School of the Vrije Universiteit Brussel, Jette, Belgium; Cancer Research Institute Ghent (CRIG), Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Meaghan A O'Reilly
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | | | - Ayache Bouakaz
- UMR 1253, iBrain, Université de Tours, Inserm, Tours, France
| | - Martin D Verweij
- Department of Biomedical Engineering, Thoraxcenter, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands; Laboratory of Acoustical Wavefield Imaging, Faculty of Applied Sciences, Delft University of Technology, Delft, The Netherlands
| | - Kullervo Hynynen
- Physical Sciences Platform, Sunnybrook Research Institute, Toronto, Ontario, Canada; Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada; Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Canada
| | - Ine Lentacker
- Ghent Research Group on Nanomedicines, Lab for General Biochemistry and Physical Pharmacy, Department of Pharmaceutical Sciences, Ghent University, Ghent, Belgium; Cancer Research Institute Ghent (CRIG), Ghent University Hospital, Ghent University, Ghent, Belgium
| | - Eleanor Stride
- Institute of Biomedical Engineering, Department of Engineering Science, University of Oxford, Oxford, United Kingdom
| | - Christy K Holland
- Department of Biomedical Engineering, College of Engineering and Applied Sciences, University of Cincinnati, Cincinnati, OH, USA; Department of Internal Medicine, Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, OH, USA
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Abdalkader R, Unga J, Yamashita F, Maruyama K, Hashida M. Evaluation of the Theranostic Potential of Perfluorohexane-Based Acoustic Nanodroplets. Biol Pharm Bull 2019; 42:2038-2044. [DOI: 10.1248/bpb.b19-00525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Rodi Abdalkader
- Institute for Advanced Study (KUIAS), Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University
| | - Johan Unga
- Faculty of Pharma-Sciences, Teikyo University
| | | | | | - Mitsuru Hashida
- Institute for Advanced Study (KUIAS), Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University
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23
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Drug-Loaded Microbubbles Combined with Ultrasound for Thrombolysis and Malignant Tumor Therapy. BIOMED RESEARCH INTERNATIONAL 2019; 2019:6792465. [PMID: 31662987 PMCID: PMC6791276 DOI: 10.1155/2019/6792465] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/22/2019] [Accepted: 09/14/2019] [Indexed: 12/14/2022]
Abstract
Cardiac-cerebral thrombosis and malignant tumor endanger the safety of human life seriously. Traditional chemotherapy drugs have side effects which restrict their applications. Drug-loaded microbubbles can be destroyed by ultrasound irradiation at the focus position and be used for thrombolysis and tumor therapy. Compared with traditional drug treatment, the drug-loaded microbubbles can be excited by ultrasound and release drugs to lesion sites, increasing the local drug concentration and the exposure dose to nonfocal regions, thus reducing the cytotoxicity and side effects of drugs. This article reviews the applications of drug-loaded microbubbles combined with ultrasound for thrombolysis and tumor therapy. We focus on highlighting the advantages of using this new technique for disease treatment and concluding with recommendations for future efforts on the applications of this technology.
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Prasad C, Banerjee R. Ultrasound-Triggered Spatiotemporal Delivery of Topotecan and Curcumin as Combination Therapy for Cancer. J Pharmacol Exp Ther 2019; 370:876-893. [DOI: 10.1124/jpet.119.256487] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Escoffre JM, Bouakaz A. Minireview: Biophysical Mechanisms of Cell Membrane Sonopermeabilization. Knowns and Unknowns. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10151-10165. [PMID: 30525655 DOI: 10.1021/acs.langmuir.8b03538] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Microbubble-assisted ultrasound has emerged as a promising method for the delivery of low-molecular-weight chemotherapeutic molecules, nucleic acids, therapeutic peptides, and antibodies in vitro and in vivo. Its clinical applications are under investigation for local delivery drug in oncology and neurology. However, the biophysical mechanisms supporting the acoustically mediated membrane permeabilization are not fully established. This review describes the present state of the investigations concerning the acoustically mediated stimuli (i.e., mechanical, chemical, and thermal stimuli) as well as the molecular and cellular actors (i.e., membrane pores and endocytosis) involved in the reversible membrane permeabilization process. The different hypotheses, which were proposed to give a biophysical description of the membrane permeabilization, are critically discussed.
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Affiliation(s)
- Jean-Michel Escoffre
- UMR 1253, iBrain, Université de Tours, Inserm , 10 bd Tonnellé , 37032 Tours Cedex 1, France
| | - Ayache Bouakaz
- UMR 1253, iBrain, Université de Tours, Inserm , 10 bd Tonnellé , 37032 Tours Cedex 1, France
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Fu JW, Lin YS, Gan SL, Li YR, Wang Y, Feng ST, Li H, Zhou GF. Multifunctionalized Microscale Ultrasound Contrast Agents for Precise Theranostics of Malignant Tumors. CONTRAST MEDIA & MOLECULAR IMAGING 2019; 2019:3145647. [PMID: 31360144 PMCID: PMC6642784 DOI: 10.1155/2019/3145647] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/26/2019] [Accepted: 06/10/2019] [Indexed: 11/17/2022]
Abstract
In ultrasonography, ultrasound contrast agents (UCAs) that possess high acoustic impedance mismatch with the bulk medium are frequently employed to highlight the borders between tissues by enhanced ultrasound scattering in a clinic. Typically, the most common UCA, microbubble, is generally close in size to a red blood cell (<∼10 μm). These microscale UCAs cannot be directly entrapped into the target cells but generate several orders of magnitude stronger echo signals than the nanoscale ones. And their large containment and high ultrasound responsiveness also greatly facilitate to perform combined treatments, e.g., drug delivery and other imaging techniques. So multifunctionalized microscale UCAs appear on this scene and keep growing toward a promising direction for precise theranostics. In this review, we systematically summarize the new advances in the principles and preparations of multifunctionalized microscale UCAs and their medical applications for malignant tumors.
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Affiliation(s)
- Jia-Wei Fu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yi-Sheng Lin
- Department of Radiology, The First Affiliated Hospital, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Sheng-Long Gan
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yong-Rui Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yao Wang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Shi-Ting Feng
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Hao Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Guo-Fu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
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Cowley J, McGinty S. A mathematical model of sonoporation using a liquid-crystalline shelled microbubble. ULTRASONICS 2019; 96:214-219. [PMID: 30739724 DOI: 10.1016/j.ultras.2019.01.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 01/17/2019] [Accepted: 01/17/2019] [Indexed: 06/09/2023]
Abstract
In recent years there has been a great deal of interest in using thin shelled microbubbles as a transportation mechanism for localised drug delivery, particularly for the treatment of various types of cancer. The technique used for such site-specific drug delivery is sonoporation. Despite there being numerous experimental studies on sonoporation, the mathematical modelling of this technique has still not been extensively researched. Presently there exists a very small body of work that models both hemispherical and spherical shelled microbubbles sonoporating due to acoustic microstreaming. Acoustic microstreaming is believed to be the dominant mechanism for sonoporation via shelled microbubbles. Rather than considering the shell of the microbubble to be composed of a thin protein, which is typical in the literature, in this paper we consider the shell to be a liquid-crystalline material. Up until now there have been no studies reported in the literature pertaining to sonoporation of a liquid-crystalline shelled microbubble. A mathematical expression is derived for the maximum wall shear stress, illustrating its dependency on the shell's various material parameters. A sensitivity analysis is performed for the wall shear stress considering the shell's thickness; its local density; the elastic constant of the liquid-crystalline material; the interfacial surface tension and; the shell's viscoelastic properties. In some cases, our results indicate that a liquid-crystalline shelled microbubble may yield a maximum wall shear stress that is two orders of magnitude greater than the stress generated by commercial shelled microbubbles that are currently in use within the scientific community. In conclusion, our preliminary analysis suggests that using liquid-crystalline shelled microbubbles may significantly enhance the efficiency of site-specific drug delivery.
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Affiliation(s)
- James Cowley
- Division of Biomedical Engineering, University of Glasgow, Glasgow G12 8QQ, UK
| | - Sean McGinty
- Division of Biomedical Engineering, University of Glasgow, Glasgow G12 8QQ, UK.
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Siminzar P, Omidi Y, Golchin A, Aghanejad A, Barar J. Targeted delivery of doxorubicin by magnetic mesoporous silica nanoparticles armed with mucin-1 aptamer. J Drug Target 2019; 28:92-101. [PMID: 31062625 DOI: 10.1080/1061186x.2019.1616745] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Distinctive physicochemical features make mesoporous silica magnetic nanoparticles (SPION@SiO2) as a multifunctional nanosystem (NS) for the targeted delivery of therapeutic agents. In the present study, we engineered the mucin-1 (MUC-1) conjugated SPION@SiO2 (SPION@SiO2-MUC-1) for the targeted delivery of doxorubicin (DOX) to the breast cancer cells. Superparamagnetic iron oxide nanoparticles (SPIONs) were synthesised using thermal decomposition technique, and then, coated with mesoporous silica to modify their biocompatibility and reduce undesired cytotoxic effects. Subsequently, DOX was loaded onto the silica porous structures, which was then nanoparticles (NPs) grafted with 5'-amine-modified MUC-1 aptamers. Transmission electron microscopy and particle size analysis by differential light scattering exhibited spherical and monodisperse NPs with a size range of 5-27 nm. The FT-IR spectroscopy confirmed the surface modification of the engineered NS. The surface area and pore size of the SPION@SiO2-COOH NSs were calculated by BJH and BET calculations. The MTT assay revealed higher cytotoxicity of MUC-1 grafted SPION@SiO2 NSs in the MUC-1-positive MCF-7 cells as compared to the control MUC-1-negative MDA-MB-231 cells. The flow cytometry analysis of the SPION@SiO2-MUC-1 NSs revealed a higher uptake as compared to the non-targeted nanocomposite (NC) in MCF-7 cells. In conclusion, the engineered SPION@SiO2-MUC-1 NS is proposed to serve as an effective multifunctional targeted nanomedicine/theranostics against MUC-1 overexpressing cancer cells.
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Affiliation(s)
- Paniz Siminzar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Yadollah Omidi
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Asal Golchin
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ayuob Aghanejad
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jaleh Barar
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
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Song KH, Trudeau T, Kar A, Borden MA, Gutierrez-Hartmann A. Ultrasound-mediated delivery of siESE complexed with microbubbles attenuates HER2+/- cell line proliferation and tumor growth in rodent models of breast cancer. Nanotheranostics 2019; 3:212-222. [PMID: 31183315 PMCID: PMC6536781 DOI: 10.7150/ntno.31827] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 05/02/2019] [Indexed: 12/18/2022] Open
Abstract
The highly tunable, noninvasive and spatially targeted nature of microbubble-enhanced, ultrasound-guided (MB+US) drug delivery makes it desirable for a wide variety of therapies. In breast cancer, both HER2+ and HER2- type neoplasms pose significant challenges to conventional therapeutics in greater than 40% of breast cancer patients, even with the widespread application of biologics such as trastuzumab. To address this therapeutic challenge, we examined the novel combination of tumor-injected microbubble-bound siRNA complexes and monodisperse size-isolated microbubbles (4-µm diameter) to attenuate tumor growth in vivo, as well as MB+US-facilitated shRNA and siRNA knockdown of ESE-1, an effector linked to dysregulated HER2 expression in HER2+/- cell line propagation. We first screened six variants of siESE and shESE for efficient knockdown of ESE in breast cancer cell lines. We demonstrated efficient reduction of BT-474 (PR+, ER+, HER2+; luminal B) and MDA-MB-468 (PR-, ER-, HER2-; triple-negative) clonogenicity and non-adherent growth after knockdown of ESE-1. A significant reduction in proliferative potential was seen for both cell lines using MB+US to deliver shESE and siESE. We then demonstrated significant attenuation of BT-474 xenograft tumor growth in Nod/SCID female mice using direct injection of microbubble-adsorbed siESE to the tumor and subsequent sonication. Our results suggest a positive effect on drug delivery from MB+US, and highlights the feasibility of using RNAi and MB+US for breast cancer pathologies. RNAi coupled with MB+US may also be an effective theranostic approach to treat other acoustically accessible tumors, such as melanoma, thyroid, parotid and skin cancer.
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Affiliation(s)
- Kang-Ho Song
- Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, USA
| | - Tammy Trudeau
- Departments of Medicine and of Biochemistry & Molecular Genetics, University of Colorado Anschutz Medical Center, Aurora, CO 80045, USA
| | - Adwitiya Kar
- Departments of Medicine and of Biochemistry & Molecular Genetics, University of Colorado Anschutz Medical Center, Aurora, CO 80045, USA
| | - Mark A. Borden
- Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309, USA
| | - Arthur Gutierrez-Hartmann
- Departments of Medicine and of Biochemistry & Molecular Genetics, University of Colorado Anschutz Medical Center, Aurora, CO 80045, USA
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Horsley H, Owen J, Browning R, Carugo D, Malone-Lee J, Stride E, Rohn JL. Ultrasound-activated microbubbles as a novel intracellular drug delivery system for urinary tract infection. J Control Release 2019; 301:166-175. [PMID: 30904501 DOI: 10.1016/j.jconrel.2019.03.017] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 03/15/2019] [Accepted: 03/18/2019] [Indexed: 12/27/2022]
Abstract
The development of new modalities for high-efficiency intracellular drug delivery is a priority for a number of disease areas. One such area is urinary tract infection (UTI), which is one of the most common infectious diseases globally and which imposes an immense economic and healthcare burden. Common uropathogenic bacteria have been shown to invade the urothelial wall during acute UTI, forming latent intracellular reservoirs that can evade antimicrobials and the immune response. This behaviour likely facilitates the high recurrence rates after oral antibiotic treatments, which are not able to penetrate the bladder wall and accumulate to an effective concentration. Meanwhile, oral antibiotics may also exacerbate antimicrobial resistance and cause systemic side effects. Using a human urothelial organoid model, we tested the ability of novel ultrasound-activated lipid microbubbles to deliver drugs into the cytoplasm of apical cells. The gas-filled lipid microbubbles were decorated with liposomes containing the non-cell-permeant antibiotic gentamicin and a fluorescent marker. The microbubble suspension was added to buffer at the apical surface of the bladder model before being exposed to ultrasound (1.1 MHz, 2.5 Mpa, 5500 cycles at 20 ms pulse duration) for 20 s. Our results show that ultrasound-activated intracellular delivery using microbubbles was over 16 times greater than the control group and twice that achieved by liposomes that were not associated with microbubbles. Moreover, no cell damage was detected. Together, our data show that ultrasound-activated microbubbles can safely deliver high concentrations of drugs into urothelial cells, and have the potential to be a more efficacious alternative to traditional oral antibiotic regimes for UTI. This modality of intracellular drug delivery may prove useful in other clinical indications, such as cancer and gene therapy, where such penetration would aid in treatment.
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Affiliation(s)
- H Horsley
- Department of Renal Medicine, Division of Medicine, University College, London, UK
| | - J Owen
- Institute of Biomedical Engineering, University of Oxford, UK
| | - R Browning
- Institute of Biomedical Engineering, University of Oxford, UK
| | - D Carugo
- Faculty of Physical Sciences and Engineering, University of Southampton, UK; Institute for Life Sciences, University of Southampton, UK
| | - J Malone-Lee
- Department of Renal Medicine, Division of Medicine, University College, London, UK
| | - E Stride
- Institute of Biomedical Engineering, University of Oxford, UK
| | - J L Rohn
- Department of Renal Medicine, Division of Medicine, University College, London, UK.
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Tian Y, Liu Z, Zhang L, Zhang J, Han X, Wang Q, Cheng W. Apatinib-loaded lipid nanobubbles combined with ultrasound-targeted nanobubble destruction for synergistic treatment of HepG2 cells in vitro. Onco Targets Ther 2018; 11:4785-4795. [PMID: 30127626 PMCID: PMC6091478 DOI: 10.2147/ott.s170786] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Purpose Apatinib, an oral small-molecule antiangiogenetic medicine, is used to treat patients with advanced hepatocellular carcinoma. However, its systemic toxic side effects cannot be ignored. The ultrasound (US)-targeted nanobubble destruction technology can minimize systemic drug exposure and maximize therapeutic efficacy. The aim of this study was to develop novel GPC3-targeted and drug-loaded nanobubbles (NBs) and further assess the associated therapeutic effects on hepatocellular carcinoma cells in vitro. Materials and methods Apatinib-loaded NBs were prepared by a mechanical vibration method. GPC3, a liver tumor homing peptide, was coated onto the surface of apatinib-loaded NBs through biotin–avidin interactions to target liver cancer HepG2 cells. The effects of different treatment groups on cell proliferation, cell cycle, and apoptosis of HepG2 cells were tested. Results The NBs could achieve 68% of optimal drug encapsulation. In addition, ligand binding assays demonstrated that attachment of targeted NBs to human HepG2 liver cancer cells was highly efficient. Furthermore, cell proliferation assays indicated that the antiproliferative activities of GPC3-targeted and apatinib-loaded NBs in combination with US (1 MHz, 1 W/cm2, 30 s) were, respectively, 44.11%±2.84%, 57.09%±6.38%, and 67.51%±2.89% after 24, 48, and 72 h of treatment. Treatment with GPC3-targeted and apatinib-loaded NBs also resulted in a higher proportion of cells in the G1 phase compared with other treatment groups such as apatinib only and nontargeted apatinib-loaded NBs when US was utilized. Conclusion US-targeted and drug-loaded nanobubble destruction successfully achieved selective growth inhibition and apoptosis in HepG2 cells in vitro. Therefore, GPC3-targeted and apatinib-loaded NBs can be considered a novel chemotherapeutic approach for treating liver cancer in combination with US.
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Affiliation(s)
- Yuhang Tian
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin 150080, People's Republic of China,
| | - Zhao Liu
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin 150080, People's Republic of China,
| | - Lei Zhang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin 150080, People's Republic of China,
| | - Jia Zhang
- Department of Microsystems and Microstructure Manufacturing, Ministry of Education, Harbin Institute of Technology, Harbin 150080, People's Republic of China
| | - Xue Han
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin 150080, People's Republic of China,
| | - Qiucheng Wang
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin 150080, People's Republic of China,
| | - Wen Cheng
- Department of Ultrasound, Harbin Medical University Cancer Hospital, Harbin 150080, People's Republic of China,
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Nie L, Harput S, Cowell DMJ, Carpenter TM, Mclaughlan JR, Freear S. Combining Acoustic Trapping With Plane Wave Imaging for Localized Microbubble Accumulation in Large Vessels. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2018; 65:1193-1204. [PMID: 29969392 DOI: 10.1109/tuffc.2018.2838332] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The capability of accumulating microbubbles using ultrasound could be beneficial for enhancing targeted drug delivery. When microbubbles are used to deliver a therapeutic payload, there is a need to track them, for a localized release of the payload. In this paper, a method for localizing microbubble accumulation with fast image guidance is presented. A linear array transducer performed trapping of microbubble populations interleaved with plane wave imaging, through the use of a composite pulse sequence. The acoustic trap in the pressure field was created parallel with the direction of flow in a model of a vessel section. The acoustic trapping force resultant from the large gradients in the acoustic field was engendered to directly oppose the flowing microbubbles. This was demonstrated numerically with field simulations, and experimentally using an Ultrasound Array Research Platform II. SonoVue microbubbles at clinically relevant concentrations were pumped through a tissue-mimicking flow phantom and exposed to either the acoustic trap or a control ultrasonic field composed of a single-peak acoustic radiation force beam. Under the flow condition at a shear rate of 433 s-1, the use of the acoustic trap led to lower speed estimations ( ) in the center of the acoustic field, and an enhancement of 71% ± 28%( ) in microbubble image brightness.
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de Leon A, Perera R, Nittayacharn P, Cooley M, Jung O, Exner AA. Ultrasound Contrast Agents and Delivery Systems in Cancer Detection and Therapy. Adv Cancer Res 2018; 139:57-84. [PMID: 29941107 DOI: 10.1016/bs.acr.2018.04.002] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Ultrasound is the second most utilized imaging modality in the world because it is widely accessible, robust, and safe. Aside from its extensive use in diagnostic imaging, ultrasound has also been frequently utilized in therapeutic applications. Particularly, when combined with appropriate delivery systems, ultrasound provides a flexible platform for simultaneous real-time imaging and triggered release, enabling precise, on-demand drug delivery to target sites. This chapter will discuss the basics of ultrasound including its mechanism of action and how it can be used to trigger the release of encapsulated drug either through thermal or cavitation effects. Fundamentals of ultrasound contrast agents, how they enhance ultrasound signals, and how they can be modified to function as carriers for triggered and targeted release of drugs will also be discussed.
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Affiliation(s)
- Al de Leon
- Department of Radiology, Case Western Reserve University, Cleveland, OH, United States
| | - Reshani Perera
- Department of Radiology, Case Western Reserve University, Cleveland, OH, United States
| | - Pinunta Nittayacharn
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States
| | - Michaela Cooley
- Department of Radiology, Case Western Reserve University, Cleveland, OH, United States
| | - Olive Jung
- Department of Radiology, Case Western Reserve University, Cleveland, OH, United States; Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom
| | - Agata A Exner
- Department of Radiology, Case Western Reserve University, Cleveland, OH, United States; Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States.
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Tumor ablation using low-intensity ultrasound and sound excitable drug. J Control Release 2017; 258:67-72. [PMID: 28499816 DOI: 10.1016/j.jconrel.2017.05.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 04/11/2017] [Accepted: 05/09/2017] [Indexed: 12/23/2022]
Abstract
The cell membrane is a semi-fluid container that defines the boundary of cells, and provides an enclosed environment for vital biological processes. A sound excitable drug (SED) that is non-cytotoxic to cells is developed to disrupt the plasma membrane under gentle ultrasound insonation, 1MHz, 1W/cm2. The frequency and power density of insonation are within the physical therapy and medical imaging windows; thus the applied ultrasound is safe and not harmful to tissues. The insertion of SEDs into the plasma membrane is not toxic to cells; however, the intruding SEDs weaken the membrane's integrity. Under insonation, the ultrasound energy destabilized the SED disrupted membranes, resulting in membrane rupture and eventual cell death. In a xenograft breast tumor model, the SED alone or the ultrasound alone caused little adverse effects to tumor tissue, while the combined treatment triggered necrosis with a brief local insonation of 3min. The described sono-membrane rupture therapy could be a safe alternative to the currently used high-energy tissue ablation technology, which uses X-rays, gamma rays, electron beams, protons, or high-intensity focused ultrasound.
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Sennoga CA, Kanbar E, Auboire L, Dujardin PA, Fouan D, Escoffre JM, Bouakaz A. Microbubble-mediated ultrasound drug-delivery and therapeutic monitoring. Expert Opin Drug Deliv 2016; 14:1031-1043. [DOI: 10.1080/17425247.2017.1266328] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Charles A. Sennoga
- UMR Imagerie et Cerveau, Inserm U930, Université François Rabelais, Tours, France
| | - Emma Kanbar
- UMR Imagerie et Cerveau, Inserm U930, Université François Rabelais, Tours, France
| | - Laurent Auboire
- UMR Imagerie et Cerveau, Inserm U930, Université François Rabelais, Tours, France
| | | | - Damien Fouan
- UMR Imagerie et Cerveau, Inserm U930, Université François Rabelais, Tours, France
| | - Jean-Michel Escoffre
- UMR Imagerie et Cerveau, Inserm U930, Université François Rabelais, Tours, France
| | - Ayache Bouakaz
- UMR Imagerie et Cerveau, Inserm U930, Université François Rabelais, Tours, France
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36
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Xie X, Lin W, Li M, Yang Y, Deng J, Liu H, Chen Y, Fu X, Liu H, Yang Y. Efficient siRNA Delivery Using Novel Cell-Penetrating Peptide-siRNA Conjugate-Loaded Nanobubbles and Ultrasound. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:1362-1374. [PMID: 27012462 DOI: 10.1016/j.ultrasmedbio.2016.01.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2015] [Revised: 01/13/2016] [Accepted: 01/27/2016] [Indexed: 06/05/2023]
Abstract
Because of the absence of tolerable and effective carriers for in vivo delivery, the applications of small interfering RNA (siRNA) in the clinic for therapeutic purposes have been limited. In this study, development of a novel siRNA delivery system based on ultrasound-sensitive nanobubbles (NBs, nano-sized echogenic liposomes) and cell-permeable peptides (CPPs) is described. A CPP-siRNA conjugate was entrapped in an NB, (CPP-siRNA)-NB, and the penetration of CPP-siRNA was temporally masked; local ultrasound stimulation triggered the release of CPP-siRNA from the NBs and activated its penetration. Subsequent research revealed that the (CPP-siRNA)-NBs had a mean particle size of 201 ± 2.05 nm and a siRNA entrapment efficiency >85%. In vitro release results indicated that >90% of the encapsulated CPP-siRNA was released from NBs in the presence of ultrasound, whereas <1.5% (30 min) was released in the absence of ultrasound. Cell experiments indicated higher cellular CPP-siRNA uptake of (CPP-siRNA)-NBs with ultrasound among the various formulations in human breast adenocarcinoma cells (HT-1080). Additionally, after systemic administration in mice, (CPP-siRNA)-NBs accumulated in the tumor, augmented c-myc silencing and delayed tumor progression. In conclusion, the application of (CPP-siRNA)-NBs with ultrasound may constitute an approach to selective targeted delivery of siRNA.
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Affiliation(s)
- Xiangyang Xie
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Military Command, Wuhan, China
| | - Wen Lin
- Department of Clinical Laboratory, Huangshi Love & Health Hospital of Hubei Province, Huangshi, China
| | - Mingyuan Li
- Beijing Institute of Pharmacology and Toxicology, Beijing, China
| | - Yang Yang
- Beijing Institute of Pharmacology and Toxicology, Beijing, China.
| | - Jianping Deng
- Department of Clinical Laboratory, Huangshi Love & Health Hospital of Hubei Province, Huangshi, China
| | - Hui Liu
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Military Command, Wuhan, China
| | - Ying Chen
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Military Command, Wuhan, China
| | - Xudong Fu
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Military Command, Wuhan, China
| | - Hong Liu
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Military Command, Wuhan, China
| | - Yanfang Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Chen X, Wang J, Pacella JJ, Villanueva FS. Dynamic Behavior of Microbubbles during Long Ultrasound Tone-Burst Excitation: Mechanistic Insights into Ultrasound-Microbubble Mediated Therapeutics Using High-Speed Imaging and Cavitation Detection. ULTRASOUND IN MEDICINE & BIOLOGY 2016; 42:528-538. [PMID: 26603628 PMCID: PMC4698009 DOI: 10.1016/j.ultrasmedbio.2015.09.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Revised: 09/11/2015] [Accepted: 09/17/2015] [Indexed: 05/24/2023]
Abstract
Ultrasound (US)-microbubble (MB)-mediated therapies have been found to restore perfusion and enhance drug/gene delivery. On the presumption that MBs do not persist during long US exposure under high acoustic pressures, most schemes use short US pulses when a high US pressure is employed. However, we recently observed an enhanced thrombolytic effect using long US pulses at high acoustic pressures. Therefore, we explored the fate of MBs during long tone-burst exposures (5 ms) at various acoustic pressures and MB concentrations via direct high-speed optical observation and passive cavitation detection. MBs first underwent stable or inertial cavitation depending on the acoustic pressure and then formed gas-filled clusters that continued to oscillate, break up and form new clusters. Cavitation detection confirmed continued, albeit diminishing, acoustic activity throughout the 5-ms US excitation. These data suggest that persisting cavitation activity during long tone bursts may confer additional therapeutic effects.
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Affiliation(s)
- Xucai Chen
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Jianjun Wang
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - John J Pacella
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
| | - Flordeliza S Villanueva
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh Medical Center, Pittsburgh, PA 15213, USA
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Yu FTH, Chen X, Wang J, Qin B, Villanueva FS. Low Intensity Ultrasound Mediated Liposomal Doxorubicin Delivery Using Polymer Microbubbles. Mol Pharm 2015; 13:55-64. [PMID: 26567985 DOI: 10.1021/acs.molpharmaceut.5b00421] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cardiotoxicity is the major dose-limiting factor in the chemotherapeutic use of doxorubicin (Dox). A delivery vehicle that can be triggered to release its payload in the tumoral microvasculature but not in healthy tissue would help improve the therapeutic window of the drug. Delivery strategies combining liposomal encapsulated Dox (LDox), microbubbles (MBs), and ultrasound (US) have been shown to improve therapeutic efficacy of LDox, but much remains to be known about the mechanisms and the US conditions that maximize cytotoxicity using this approach. In this study, we compared different US pulses in terms of drug release and acute toxicity. Drug uptake and proliferation rates using low-intensity US were measured in squamous cell carcinoma cells exposed to LDox conjugated to or coinjected with polymer MBs. The aims of this study were: (1) to compare the effects of low- and high-pressure US on Dox release kinetics; (2) to evaluate whether conjugating the liposome to the MB surface (DoxLPX) is an important factor for drug release and cytotoxicity; and (3) to determine which US parameters most inhibit cell proliferation and whether this inhibition is mediated by drug release or the MB/US interaction with cells. Low-pressure US (170 kPa) at high duty cycle (stable cavitation) released up to ∼ 70% of the encapsulated Dox from the DoxLPX, thus improving Dox bioavailability and cellular uptake and leading to a significant reduction in cell proliferation at 48 h. Flow cytometry showed that US generating stable oscillations of DoxLPX significantly increased cellular Dox uptake at 4 h after US exposure compared to LDox. Drug uptake was correlated with cytotoxicity at 48 h. Our results demonstrate that Dox-containing liposomes conjugated to polymer MBs can be triggered to release ∼ 70% of their payload using noninertial US. Following release, Dox became bioavailable to the cells and induced significantly higher cytotoxicity compared to nonreleased encapsulated drug. Our findings show promise for targeted drug delivery using this theranostic delivery platform at low US intensities.
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Affiliation(s)
- Francois T H Yu
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh , Pittsburgh, Pennsylvania 15213, United States
| | - Xucai Chen
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh , Pittsburgh, Pennsylvania 15213, United States
| | - Jianjun Wang
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh , Pittsburgh, Pennsylvania 15213, United States
| | - Bin Qin
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh , Pittsburgh, Pennsylvania 15213, United States
| | - Flordeliza S Villanueva
- Center for Ultrasound Molecular Imaging and Therapeutics, University of Pittsburgh , Pittsburgh, Pennsylvania 15213, United States
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Xie X, Yang Y, Lin W, Liu H, Liu H, Yang Y, Chen Y, Fu X, Deng J. Cell-penetrating peptide-siRNA conjugate loaded YSA-modified nanobubbles for ultrasound triggered siRNA delivery. Colloids Surf B Biointerfaces 2015; 136:641-50. [PMID: 26492155 DOI: 10.1016/j.colsurfb.2015.10.004] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 09/29/2015] [Accepted: 10/03/2015] [Indexed: 10/22/2022]
Abstract
Due to the absence of effective in vivo delivery systems, the employment of small interference RNA (siRNA) in the clinic has been hindered. In this paper, a new siRNA targeting system for EphA2-positive tumors was developed, based on ultrasound-sensitive nanobubbles (NBs) and cell-permeable peptides (CPPs). Here, a CPP-siRNA conjugate (CPP-siRNA) was entrapped in an ephrin mimetic peptide (YSA peptide)-modified NB (CPP-siRNA/YSA-NB) and the penetration of the CPP-siRNA was temporally masked; local ultrasound stimulation triggered the release of CPP-siRNA from the NBs and activated its penetration. Subsequent research demonstrated that the CPP-siRNA/YSA-NBs had particle sizes of approximately 200 nm and a siRNA entrapment efficiency of more than 85%. The in vitro release results showed that over 90% of the encapsulated CPP-siRNA released from the NBs in the presence of ultrasound, while less than 1.5% of that (30 min) released without ultrasound. Cell experiments showed a the higher CPP-siRNA cellular uptake of CPP-siRNA/YSA-NB among the various formulations in human breast adenocarcinoma cells (MCF-7, EphA2 positive cells). Additionally, after systemic administration in mice, CPP-siRNA/YSA-NB accumulated in the tumor, augmented c-Myc silencing and delayed tumor progression. In conclusion, the application of CPP-siRNA/YSA-NB with ultrasound may provide a strategy for the selective and efficient delivery of siRNA.
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Affiliation(s)
- Xiangyang Xie
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Command, Wuhan 430070, PR China
| | - Yanfang Yang
- Beijing Key Laboratory of Drug Delivery Technology and Novel Formulation, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050, PR China
| | - Wen Lin
- Department of Clinical Laboratory, Huangshi Love & Health Hospital of Hubei Province, Huangshi 435000, PR China
| | - Hui Liu
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Command, Wuhan 430070, PR China
| | - Hong Liu
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Command, Wuhan 430070, PR China
| | - Yang Yang
- Beijing Institute of Pharmacology and Toxicology, No. 27 Taiping Road, Beijing 100850, PR China.
| | - Ying Chen
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Command, Wuhan 430070, PR China
| | - Xudong Fu
- Department of Pharmacy, Wuhan General Hospital of Guangzhou Command, Wuhan 430070, PR China
| | - Jianping Deng
- Department of Clinical Laboratory, Huangshi Love & Health Hospital of Hubei Province, Huangshi 435000, PR China.
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Klibanov AL, Hossack JA. Ultrasound in Radiology: From Anatomic, Functional, Molecular Imaging to Drug Delivery and Image-Guided Therapy. Invest Radiol 2015; 50:657-70. [PMID: 26200224 PMCID: PMC4580624 DOI: 10.1097/rli.0000000000000188] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
During the past decade, ultrasound has expanded medical imaging well beyond the "traditional" radiology setting: a combination of portability, low cost, and ease of use makes ultrasound imaging an indispensable tool for radiologists as well as for other medical professionals who need to obtain imaging diagnosis or guide a therapeutic intervention quickly and efficiently. Ultrasound combines excellent ability for deep penetration into soft tissues with very good spatial resolution, with only a few exceptions (ie, those involving overlying bone or gas). Real-time imaging (up to hundreds and thousands of frames per second) enables guidance of therapeutic procedures and biopsies; characterization of the mechanical properties of the tissues greatly aids with the accuracy of the procedures. The ability of ultrasound to deposit energy locally brings about the potential for localized intervention encompassing the following: tissue ablation, enhancing penetration through the natural barriers to drug delivery in the body and triggering drug release from carrier microparticles and nanoparticles. The use of microbubble contrast agents brings the ability to monitor and quantify tissue perfusion, and microbubble targeting with ligand-decorated microbubbles brings the ability to obtain molecular biomarker information, that is, ultrasound molecular imaging. Overall, ultrasound has become the most widely used imaging modality in modern medicine; it will continue to grow and expand.
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Affiliation(s)
- Alexander L Klibanov
- From the *Cardiovascular Division, Robert M. Berne Cardiovascular Research Center, School of Medicine, and †Department of Biomedical Engineering, University of Virginia, Charlottesville VA
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41
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Lin W, Xie X, Deng J, Liu H, Chen Y, Fu X, Liu H, Yang Y. Cell-penetrating peptide-doxorubicin conjugate loaded NGR-modified nanobubbles for ultrasound triggered drug delivery. J Drug Target 2015; 24:134-46. [PMID: 26176270 DOI: 10.3109/1061186x.2015.1058802] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A new drug-targeting system for CD13(+) tumors has been developed, based on ultrasound-sensitive nanobubbles (NBs) and cell-permeable peptides (CPPs). Here, the CPP-doxorubicin conjugate (CPP-DOX) was entrapped in the asparagine-glycine-arginine (NGR) peptide modified NB (CPP-DOX/NGR-NB) and the penetration of CPP-DOX was temporally masked; local ultrasound stimulation could trigger the CPP-DOX release from NB and activate its penetration. The CPP-DOX/NGR-NBs had particle sizes of about 200 nm and drug entrapment efficiency larger than 90%. In vitro release results showed that over 85% of the encapsulated DOX or CPP-DOX would release from NBs in the presence of ultrasound, while less than 1.5% of that (30 min) without ultrasound. Cell experiments showed the higher cellular CPP-DOX uptake of CPP-DOX/NGR-NB among the various NB formulations in Human fibrosarcoma cells (HT-1080, CD13(+)). The CPP-DOX/NGR-NB with ultrasound treatment exhibited an increased cytotoxic activity than the one without ultrasound. In nude mice xenograft of HT-1080 cells, CPP-DOX/NGR-NB with ultrasound showed a higher tumor inhibition effect (3.1% of T/C%, day 24), longer median survival time (50 days) and excellent body safety compared with the normal DOX injection group. These results indicate that the constructed vesicle would be a promising drug delivery system for specific cancer treatment.
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Affiliation(s)
- Wen Lin
- a Department of Clinical Laboratory , Huangshi Love & Health Hospital of Hubei Province , Huangshi , People's Republic of China
| | - Xiangyang Xie
- b Department of Pharmacy , Wuhan General Hospital of Guangzhou Military Command , Wuhan , People's Republic of China , and
| | - Jianping Deng
- a Department of Clinical Laboratory , Huangshi Love & Health Hospital of Hubei Province , Huangshi , People's Republic of China
| | - Hui Liu
- b Department of Pharmacy , Wuhan General Hospital of Guangzhou Military Command , Wuhan , People's Republic of China , and
| | - Ying Chen
- b Department of Pharmacy , Wuhan General Hospital of Guangzhou Military Command , Wuhan , People's Republic of China , and
| | - Xudong Fu
- b Department of Pharmacy , Wuhan General Hospital of Guangzhou Military Command , Wuhan , People's Republic of China , and
| | - Hong Liu
- b Department of Pharmacy , Wuhan General Hospital of Guangzhou Military Command , Wuhan , People's Republic of China , and
| | - Yang Yang
- c Department of Pharmacy , Beijing Institute of Pharmacology and Toxicology , Beijing , People's Republic of China
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Abstract
The combination of microbubbles and ultrasound has emerged as a promising method for local drug delivery. Microbubbles can be locally activated by a targeted ultrasound beam, which can result in several bio-effects. For drug delivery, microbubble-assisted ultrasound is used to increase vascular- and plasma membrane permeability for facilitating drug extravasation and the cellular uptake of drugs in the treated region, respectively. In the case of drug-loaded microbubbles, these two mechanisms can be combined with local release of the drug following destruction of the microbubble. The use of microbubble-assisted ultrasound to deliver chemotherapeutic agents is also referred to as sonochemotherapy. In this review, the basic principles of sonochemotherapy are discussed, including aspects such as the type of (drug-loaded) microbubbles used, the routes of administration used in vivo, ultrasound devices and parameters, treatment schedules and safety issues. Finally, the clinical translation of sonochemotherapy is discussed, including the first clinical study using sonochemotherapy.
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Affiliation(s)
- Bart H A Lammertink
- Image Guided Therapy, Imaging Division, University Medical Center Utrecht Utrecht, Netherlands
| | - Clemens Bos
- Image Guided Therapy, Imaging Division, University Medical Center Utrecht Utrecht, Netherlands
| | - Roel Deckers
- Image Guided Therapy, Imaging Division, University Medical Center Utrecht Utrecht, Netherlands
| | - Gert Storm
- Department of Pharmaceutical Sciences, Faculty of Science, Utrecht University Utrecht, Netherlands ; Targeted Therapeutics, MIRA Institute for Biomedical Technology and Technical Medicine, University of Twente Enschede, Netherlands
| | - Chrit T W Moonen
- Image Guided Therapy, Imaging Division, University Medical Center Utrecht Utrecht, Netherlands
| | - Jean-Michel Escoffre
- Image Guided Therapy, Imaging Division, University Medical Center Utrecht Utrecht, Netherlands
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Wood AKW, Sehgal CM. A review of low-intensity ultrasound for cancer therapy. ULTRASOUND IN MEDICINE & BIOLOGY 2015; 41:905-28. [PMID: 25728459 PMCID: PMC4362523 DOI: 10.1016/j.ultrasmedbio.2014.11.019] [Citation(s) in RCA: 199] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 11/13/2014] [Accepted: 11/24/2014] [Indexed: 05/05/2023]
Abstract
The literature describing the use of low-intensity ultrasound in four major areas of cancer therapy-sonodynamic therapy, ultrasound-mediated chemotherapy, ultrasound-mediated gene delivery and anti-vascular ultrasound therapy-was reviewed. Each technique consistently resulted in the death of cancer cells, and the bio-effects of ultrasound were attributed primarily to thermal actions and inertial cavitation. In each therapeutic modality, theranostic contrast agents composed of microbubbles played a role in both therapy and vascular imaging. The development of these agents is important as it establishes a therapeutic-diagnostic platform that can monitor the success of anti-cancer therapy. Little attention, however, has been given either to the direct assessment of the mechanisms underlying the observed bio-effects or to the viability of these therapies in naturally occurring cancers in larger mammals; if such investigations provided encouraging data, there could be prompt application of a therapy technique in the treatment of cancer patients.
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Affiliation(s)
- Andrew K W Wood
- Department Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Chandra M Sehgal
- Department of Radiology, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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Keravnou CP, Mannaris C, Averkiou MA. Accurate measurement of microbubble response to ultrasound with a diagnostic ultrasound scanner. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2015; 62:176-184. [PMID: 25585401 DOI: 10.1109/tuffc.2014.006664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ultrasound and microbubbles are often used to enhance drug delivery and the suggested mechanisms are extravasation and sonoporation. Drug delivery schemes with ultrasound and microbubbles at both low and high acoustic amplitudes have been suggested. A diagnostic ultrasound scanner may play a double role as both an imaging and a therapy device. It was not possible to accurately measure microbubble response with an ultrasound scanner for a large range of acoustic pressures and microbubble concentrations until now, mainly because of signal saturation issues. A method for continuously adjusting the receive gain of a scanner and limiting signal saturation was developed to accurately measure backscattered echoes from microbubbles for mechanical indexes (MIs) up to 2.1. The intensity of backscattered echoes from microbubbles increased quarticly with MI without reaching any limit. The signal intensity from microbubbles was found to be linear with concentration at both low and high MIs. However, at very high concentrations, acoustic shadowing occurs which limits the delivered acoustic pressure in deeper areas. The contrastto- tissue ratio was also measured and found to stay constant with MI. These results can be used to better guide drug delivery approaches and to also develop imaging techniques for therapy procedures.
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45
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Husseini GA, Pitt WG, Martins AM. Ultrasonically triggered drug delivery: breaking the barrier. Colloids Surf B Biointerfaces 2014; 123:364-86. [PMID: 25454759 DOI: 10.1016/j.colsurfb.2014.07.051] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 07/23/2014] [Accepted: 07/24/2014] [Indexed: 12/21/2022]
Abstract
The adverse side-effects of chemotherapy can be minimized by delivering the therapeutics in time and space to only the desired target site. Ultrasound offers one fairly non-invasive method of accomplishing such precise delivery because its energy can disrupt nanosized containers that are designed to sequester the drug until the ultrasonic event. Such containers include micelles, liposomes and solid nanoparticles. Conventional micelles and liposomes are less acoustically sensitive to ultrasound because the strongest forces associated with ultrasound are generated by gas-liquid interfaces, which both of these conventional constructs lack. Acoustically activated carriers often incorporate a gas phase, either actively as preformed bubbles, or passively such as taking advantage of dissolved gasses that form bubbles upon insonation. Newer concepts include using liquids that form gas when insonated. This review focuses on the ultrasonically activated delivery of therapeutics from micelles, liposomes and solid particles. In vitro and in vivo results are summarized and discussed. Novel structural concepts from micelles and liposomes are presented. Mechanisms of ultrasonically activated release are discussed. The future of ultrasound in drug delivery is envisioned.
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Affiliation(s)
| | | | - Ana M Martins
- American University of Sharjah, Sharjah, United Arab Emirates
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46
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Izamis ML, Efstathiades A, Keravnou C, Leen EL, Averkiou MA. Dynamic contrast-enhanced ultrasound of slaughterhouse porcine livers in machine perfusion. ULTRASOUND IN MEDICINE & BIOLOGY 2014; 40:2217-2230. [PMID: 25023101 DOI: 10.1016/j.ultrasmedbio.2014.03.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 03/28/2014] [Accepted: 03/31/2014] [Indexed: 06/03/2023]
Abstract
The aim of this study was to enable investigations into novel imaging and surgical techniques by developing a readily accessible, versatile liver machine perfusion system. Slaughterhouse pig livers were used, and dynamic contrast-enhanced ultrasound was introduced to optimize the procurement process and provide real-time perfusion monitoring. The system comprised a single pump, oxygenator, bubble trap and two flowmeters for pressure-controlled perfusion of the vessels using an off-the-shelf perfusate at room temperature. Successful livers exhibited homogeneous perfusion in both the portal vein and hepatic artery with dynamic contrast-enhanced ultrasound, which correlated with stable oxygen uptake, bile production and hepatic resistance and normal histology at the end of 3 h of perfusion. Dynamic contrast-enhanced ultrasound revealed perfusion abnormalities invisible to the naked eye, thereby providing context to the otherwise systemic biochemical/hemodynamic measurements and focal biopsy findings. The model developed here is a simple, cost-effective approach for stable ex vivo whole-organ machine perfusion.
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Affiliation(s)
- Maria-Louisa Izamis
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
| | | | - Christina Keravnou
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
| | - Edward L Leen
- Department of Medicine, Imperial College, London, United Kingdom
| | - Michalakis A Averkiou
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus.
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Izamis ML, Efstathiades A, Keravnou C, Georgiadou S, Martins PN, Averkiou MA. Effects of air embolism size and location on porcine hepatic microcirculation in machine perfusion. Liver Transpl 2014; 20:601-11. [PMID: 24478135 DOI: 10.1002/lt.23838] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 01/05/2014] [Indexed: 02/07/2023]
Abstract
The handling of donor organs frequently introduces air into the microvasculature, but little is known about the extent of the damage caused as a function of the embolism size and distribution. Here we introduced embolisms of different sizes into the portal vein, the hepatic artery, or both during the flushing stage of porcine liver procurement. The outcomes were evaluated during 3 hours of machine perfusion and were compared to the outcomes of livers with no embolisms. Dynamic contrast-enhanced ultrasound (DCEUS) was used to assess the perfusion quality, and it demonstrated that embolisms tended to flow mostly into the left lobe, occasionally into the right lobe, and rarely into the caudate lobe. Major embolisms could disrupt the flow entirely, whereas minor embolisms resulted in reduced or heterogeneous flow. Embolisms occasionally migrated to different regions of the same lobe and, regardless of their size, caused a general deterioration in the flow over time. Histological damage resulted primarily when both vessels of the liver were compromised, whereas bile production was diminished in livers that had arterial embolisms. Air embolisms produced a dose-dependent increase in vascular resistance and a decline in oxygen consumption. This is the first article to quantify the impact of air embolisms on microcirculation in an experimental model, and it demonstrates that air embolisms have the capacity to degrade the integrity of donor organs. The extent of organ damage is strongly dependent on the size and distribution of air embolisms. The diagnosis of embolism severity can be safely and easily made with DCEUS.
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Affiliation(s)
- Maria-Louisa Izamis
- Department of Mechanical and Manufacturing Engineering, University of Cyprus, Nicosia, Cyprus
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Liu H, Chang S, Sun J, Zhu S, Pu C, Zhu Y, Wang Z, Xu RX. Ultrasound-mediated destruction of LHRHa-targeted and paclitaxel-loaded lipid microbubbles induces proliferation inhibition and apoptosis in ovarian cancer cells. Mol Pharm 2014; 11:40-8. [PMID: 24266423 PMCID: PMC3903397 DOI: 10.1021/mp4005244] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Although paclitaxel (PTX) is used with platinum as the first line chemotherapy regimen for ovarian cancer, its clinical efficacy is often limited by severe adverse effects. Ultrasound-targeted microbubble destruction (UTMD) technique holds a great promise in minimizing the side effects and maximizing the therapeutic efficacy. However, the technique typically uses nontargeted microbubbles with suboptimal efficiency. We synthesized targeted and PTX-loaded microbubbles (MBs) for UTMD mediated chemotherapy in ovarian cancer cells. PTX-loaded lipid MBs were coated with a luteinizing hormone-releasing hormone analogue (LHRHa) through a biotin-avidin linkage to target the ovarian cancer A2780/DDP cells that express the LHRH receptor. In the cell culture studies, PTX-loaded and LHRHa-targeted MBs (TPLMBs) in combination with ultrasound (300 kHz, 0.5 W/cm(2), 30 s) demonstrated antiproliferative activities of 41.30 ± 3.93%, 67.76 ± 2.45%, and 75.93 ± 2.81% at 24, 48, and 72 h after the treatment, respectively. The cell apoptosis ratio at 24 h after the treatment is 32.6 ± 0.79%, which is significantly higher than other treatment groups such as PTX only and no-targeted PTX-loaded MBs (NPLMBs) with or without ultrasound mediation. Our experiment verifies the hypothesis that ultrasound mediation of ovarian cancer-targeted and drug-loaded MBs will enhance the PTX therapeutic efficiency.
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Affiliation(s)
- Hongxia Liu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Shufang Chang
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Jiangchuan Sun
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Shenyin Zhu
- Department of Pharmacy, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
| | - Caixiu Pu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Yi Zhu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Zhigang Wang
- Institute of Ultrasound Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Ronald X. Xu
- Department of Obstetrics and Gynecology, Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
- Department of Biomedical Engineering, The Ohio State University, Columbus, OH 43210, USA
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49
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Coupling of drug containing liposomes to microbubbles improves ultrasound triggered drug delivery in mice. J Control Release 2013; 172:885-93. [DOI: 10.1016/j.jconrel.2013.09.014] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 09/10/2013] [Accepted: 09/15/2013] [Indexed: 11/17/2022]
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50
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McLaughlan J, Ingram N, Smith PR, Harput S, Coletta PL, Evans S, Freear S. Increasing the sonoporation efficiency of targeted polydisperse microbubble populations using chirp excitation. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2013; 60:2511-20. [PMID: 24297017 DOI: 10.1109/tuffc.2013.2850] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The therapeutic use of microbubbles for targeted drug or gene delivery is a highly active area of research. Phospholipid- encapsulated microbubbles typically have a polydisperse size distribution over the 1 to 10 μm range and can be functionalized for molecular targeting and loaded with drugcarrying liposomes. Sonoporation through the generation of shear stress on the cell membrane by microbubble oscillations is one mechanism that results in pore formation in the cell membrane and can improve drug delivery. A microbubble oscillating at its resonant frequency would generate maximum shear stress on a membrane. However, because of the polydisperse nature of phospholipid microbubbles, a range of resonant frequencies would exist in a single population. In this study, the use of linear chirp excitations was compared with equivalent duration and acoustic pressure tone excitations when measuring the sonoporation efficiency of targeted microbubbles on human colorectal cancer cells. A 3 to 7 MHz chirp had the greatest sonoporation efficiency of 26.9 ± 5.6%, compared with 16.4 ± 1.1% for the 1.32 to 3.08 MHz chirp. The equivalent 2.2- and 5-MHz tone excitations have efficiencies of 12.8 ± 2.1% and 15.6 ± 1.1%, respectively, which were all above the efficiency of 4.1 ± 3.1% from the control exposure.
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