1
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Kaushik A, Abeid BA, Estrada JB, Fowlkes JB, Fabiilli ML, Aliabouzar M. The radial dynamics and acoustic emissions of phase-shift droplets are impacted by mechanical properties of tissue-mimicking hydrogels. ULTRASONICS SONOCHEMISTRY 2024; 109:106984. [PMID: 39018892 PMCID: PMC11305293 DOI: 10.1016/j.ultsonch.2024.106984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/27/2024] [Accepted: 07/08/2024] [Indexed: 07/19/2024]
Abstract
Acoustic droplet vaporization (ADV) offers a dynamic approach for generating bubbles on demand, presenting new possibilities in biomedical applications. Although ADV has been investigated in various biomedical applications, its potential in tissue characterization remains unexplored. Here, we investigated the effects of surrounding media on the radial dynamics and acoustic emissions of ADV bubbles using theoretical and experimental methodologies. For theoretical studies, bubble dynamics were combined with the Kelvin-Voigt material constitutive model, accounting for viscoelasticity of the media. The radial dynamics and acoustic emissions of the ADV-bubbles were recorded via ultra-high-speed microscopy and passive cavitation detection, respectively. Perfluoropentane phase-shift droplets were embedded in tissue-mimicking hydrogels of varying fibrin concentrations, representing different elastic moduli. Radial dynamics and the acoustic emissions, both temporal and spectral, of the ADV-bubbles depended significantly on fibrin elastic modulus. For example, an increase in fibrin elastic modulus from ≈0.2 kPa to ≈6 kPa reduced the maximum expansion radius of the ADV-bubbles by 50%. A similar increase in the elastic modulus significantly impacted both linear (e.g., fundamental) and nonlinear (e.g., subharmonic) acoustic responses of the ADV-bubbles, by up to 10 dB. The sensitivity of ADV to the surrounding media was dependent on acoustic parameters such as driving pressure and the droplets concentration. Further analysis of the acoustic emissions revealed distinct ADV signal characteristics, which were significantly influenced by the surrounding media.
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Affiliation(s)
- Anuj Kaushik
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Bachir A Abeid
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Jonathan B Estrada
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - J Brian Fowlkes
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Mario L Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Mitra Aliabouzar
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA.
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2
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Abeid BA, Fabiilli ML, Estrada JB, Aliabouzar M. Ultra-high-speed dynamics of acoustic droplet vaporization in soft biomaterials: Effects of viscoelasticity, frequency, and bulk boiling point. ULTRASONICS SONOCHEMISTRY 2024; 103:106754. [PMID: 38252981 PMCID: PMC10830863 DOI: 10.1016/j.ultsonch.2024.106754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/14/2023] [Accepted: 01/03/2024] [Indexed: 01/24/2024]
Abstract
Phase-shift droplets are a highly adaptable platform for biomedical applications of ultrasound. The spatiotemporal response of phase-shift droplets to focused ultrasound above a certain pressure threshold, termed acoustic droplet vaporization (ADV), is influenced by intrinsic features (e.g., bulk boiling point) and extrinsic factors (e.g., driving frequency and surrounding media). A deep understanding of ADV dynamics is critical to ensure the robustness and repeatability of an ADV-assisted application. Here, we integrated ultra-high-speed imaging, at 10 million frames per second, and confocal microscopy for a full-scale (i.e., from nanoseconds to seconds) characterization of ADV. Experiments were conducted in fibrin-based hydrogels to mimic soft tissue environments. Effects of fibrin concentration (0.2 to 8 % (w/v)), excitation frequency (1, 2.5, and 9.4 MHz), and perfluorocarbon core (perfluoropentane, perfluorohexane, and perfluorooctane) on ADV dynamics were studied. Several fundamental parameters related to ADV dynamics, such as expansion ratio, expansion velocity, collapse radius, collapse time, radius of secondary rebound, resting radius, and equilibrium radius of the generated bubbles were extracted from the radius vs time curves. Diffusion-driven ADV-bubble growth was fit to a modified Epstein-Plesset equation, adding a material stress term, to estimate the growth rate. Our results indicated that ADV dynamics were significantly impacted by fibrin concentration, frequency, and perfluorocarbon liquid core. This is the first study to combine ultra-high-speed and confocal microscopy techniques to provide insights into ADV bubble dynamics in tissue-mimicking hydrogels.
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Affiliation(s)
- Bachir A Abeid
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Mario L Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Jonathan B Estrada
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI USA
| | - Mitra Aliabouzar
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI USA; Department of Radiology, University of Michigan, Ann Arbor, MI, USA.
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3
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Aliabouzar M, Kripfgans OD, Brian Fowlkes J, Fabiilli ML. Bubble nucleation and dynamics in acoustic droplet vaporization: a review of concepts, applications, and new directions. Z Med Phys 2023; 33:387-406. [PMID: 36775778 PMCID: PMC10517405 DOI: 10.1016/j.zemedi.2023.01.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 12/30/2022] [Accepted: 01/09/2023] [Indexed: 02/12/2023]
Abstract
The development of phase-shift droplets has broadened the scope of ultrasound-based biomedical applications. When subjected to sufficient acoustic pressures, the perfluorocarbon phase in phase-shift droplets undergoes a phase-transition to a gaseous state. This phenomenon, termed acoustic droplet vaporization (ADV), has been the subject of substantial research over the last two decades with great progress made in design of phase-shift droplets, fundamental physics of bubble nucleation and dynamics, and applications. Here, we review experimental approaches, carried out via high-speed microscopy, as well as theoretical models that have been proposed to study the fundamental physics of ADV including vapor nucleation and ADV-induced bubble dynamics. In addition, we highlight new developments of ADV in tissue regeneration, which is a relatively recently exploited application. We conclude this review with future opportunities of ADV for advanced applications such as in situ microrheology and pressure estimation.
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Affiliation(s)
- Mitra Aliabouzar
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA.
| | - Oliver D Kripfgans
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - J Brian Fowlkes
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Mario L Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
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4
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Ma P, Lai X, Luo Z, Chen Y, Loh XJ, Ye E, Li Z, Wu C, Wu YL. Recent advances in mechanical force-responsive drug delivery systems. NANOSCALE ADVANCES 2022; 4:3462-3478. [PMID: 36134346 PMCID: PMC9400598 DOI: 10.1039/d2na00420h] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 07/15/2022] [Indexed: 06/16/2023]
Abstract
Mechanical force responsive drug delivery systems (in terms of mechanical force induced chemical bond breakage or physical structure destabilization) have been recently explored to exhibit a controllable pharmaceutical release behaviour at a molecular level. In comparison with chemical or biological stimulus triggers, mechanical force is not only an external but also an internal stimulus which is closely related to the physiological status of patients. However, although this mechanical force stimulus might be one of the most promising and feasible sources to achieve on-demand pharmaceutical release, current research in this field is still limited. Hence, this tutorial review aims to comprehensively evaluate the recent advances in mechanical force-responsive drug delivery systems based on different types of mechanical force, in terms of direct stimulation by compressive, tensile, and shear force, or indirect/remote stimulation by ultrasound and a magnetic field. Furthermore, the exciting developments and current challenges in this field will also be discussed to provide a blueprint for potential clinical translational research of mechanical force-responsive drug delivery systems.
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Affiliation(s)
- Panqin Ma
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University Xiamen 361102 China
| | - Xiyu Lai
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University Xiamen 361102 China
| | - Zheng Luo
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University Xiamen 361102 China
| | - Ying Chen
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University Xiamen 361102 China
| | - Xian Jun Loh
- Institute of Materials Research and Engineering, ASTAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 138634 Singapore
| | - Enyi Ye
- Institute of Materials Research and Engineering, ASTAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 138634 Singapore
| | - Zibiao Li
- Institute of Materials Research and Engineering, ASTAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Innovis, #08-03 138634 Singapore
- Institute of Sustainability for Chemicals, Energy and Environment (ISCE2) Agency for Science, Technology, and Research (ASTAR) Singapore 138634 Singapore
- Department of Materials Science and Engineering, National University of Singapore 9 Engineering Drive 1 Singapore 117576 Singapore
| | - Caisheng Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University Xiamen 361102 China
| | - Yun-Long Wu
- Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University Xiamen 361102 China
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Aliabouzar M, Kripfgans OD, Estrada JB, Brian Fowlkes J, Fabiilli ML. Multi-time scale characterization of acoustic droplet vaporization and payload release of phase-shift emulsions using high-speed microscopy. ULTRASONICS SONOCHEMISTRY 2022; 88:106090. [PMID: 35835060 PMCID: PMC9287562 DOI: 10.1016/j.ultsonch.2022.106090] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 06/27/2022] [Accepted: 07/04/2022] [Indexed: 05/16/2023]
Abstract
Acoustic droplet vaporization (ADV) is the phase-transitioning of perfluorocarbon emulsions, termed phase-shift emulsions, into bubbles using focused ultrasound. ADV has been utilized in many biomedical applications. For localized drug release, phase-shift emulsions with a bioactive payload can be incorporated within a hydrogel to yield an acoustically-responsive scaffold (ARS). The dynamics of ADV and associated drug release within hydrogels are not well understood. Additionally, emulsions used in ARSs often contain high molecular weight perfluorocarbons, which is unique relative to other ADV applications. In this study, we used ultra-high-speed brightfield and fluorescence microscopy, at frame rates up to 30 million and 0.5 million frames per second, respectively, to elucidate ADV dynamics and payload release kinetics in fibrin-based ARSs containing phase-shift emulsions with three different perfluorocarbons: perfluoropentane (PFP), perfluorohexane (PFH), and perfluorooctane (PFO). At an ultrasound excitation frequency of 2.5 MHz, the maximum expansion ratio, defined as the maximum bubble diameter during ADV normalized by the initial emulsion diameter, was 4.3 ± 0.8, 4.1 ± 0.6, and 3.6 ± 0.4, for PFP, PFH, PFO emulsions, respectively. ADV yielded stable bubble formation in PFP and PFH emulsions, though the bubble growth rate post-ADV was three orders of magnitudes slower in the latter emulsion. Comparatively, ADV generated bubbles in PFO emulsions underwent repeated vaporization/recondensation or fragmentation. Different ADV-generated bubble dynamics resulted in distinct release kinetics in phase-shift emulsions carrying fluorescently-labeled payloads. The results provide physical insight enabling the modulation of bubble dynamics with ADV and hence release kinetics, which can be used for both diagnostic and therapeutic applications of ultrasound.
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Affiliation(s)
- Mitra Aliabouzar
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA.
| | - Oliver D Kripfgans
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Jonathan B Estrada
- Department of Mechanical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - J Brian Fowlkes
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Mario L Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
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Zhang S, Zhang S, Luo S, Tang P, Wan M, Wu D, Gao W. Ultrasound-assisted brain delivery of nanomedicines for brain tumor therapy: advance and prospect. J Nanobiotechnology 2022; 20:287. [PMID: 35710426 PMCID: PMC9205090 DOI: 10.1186/s12951-022-01464-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 05/18/2022] [Indexed: 12/14/2022] Open
Abstract
Nowadays, brain tumors are challenging problems, and the key of therapy is ensuring therapeutic drugs cross the blood-brain barrier (BBB) effectively. Although the efficiency of drug transport across the BBB can be increased by innovating and modifying nanomedicines, they exert insufficient therapeutic effects on brain tumors due to the complex environment of the brain. It is worth noting that ultrasound combined with the cavitation effect of microbubbles can assist BBB opening and enhance brain delivery of nanomedicines. This ultrasound-assisted brain delivery (UABD) technology with related nanomedicines (UABD nanomedicines) can safely open the BBB, facilitate the entry of drugs into the brain, and enhance the therapeutic effect on brain tumors. UABD nanomedicines, as the main component of UABD technology, have great potential in clinical application and have been an important area of interest in the field of brain tumor therapy. However, research on UABD nanomedicines is still in its early stages despite the fact that they have been associated with many disciplines, including material science, brain science, ultrasound, biology, and medicine. Some aspects of UABD theory and technology remain unclear, especially the mechanisms of BBB opening, relationship between materials of nanomedicines and UABD technology, cavitation and UABD nanomedicines design theories. This review introduces the research status of UABD nanomedicines, investigates their properties and applications of brain tumor therapy, discusses the advantages and drawbacks of UABD nanomedicines for the treatment of brain tumors, and offers their prospects. We hope to encourage researchers from various fields to participate in this area and collaborate on developing UABD nanomedicines into powerful tools for brain tumor therapy.
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Affiliation(s)
- Shuo Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Shuai Zhang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Siyuan Luo
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Peng Tang
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Mingxi Wan
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China
| | - Daocheng Wu
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, People's Republic of China.
| | - Wei Gao
- Department of Anesthesiology and Center for Brain Science and Center for Translational Medicine, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, People's Republic of China.
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7
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Aliabouzar M, Ley AW, Meurs S, Putnam AJ, Baker BM, Kripfgans OD, Fowlkes JB, Fabiilli ML. Micropatterning of acoustic droplet vaporization in acoustically-responsive scaffolds using extrusion-based bioprinting. BIOPRINTING (AMSTERDAM, NETHERLANDS) 2022; 25:e00188. [PMID: 35087958 PMCID: PMC8789001 DOI: 10.1016/j.bprint.2021.e00188] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Acoustically-responsive scaffolds (ARSs) are composite hydrogels that respond to ultrasound in an on-demand, spatiotemporally-controlled manner due to the presence of a phase-shift emulsion. When exposed to ultrasound, a gas bubble is formed within each emulsion droplet via a mechanism termed acoustic droplet vaporization (ADV). In previous in vitro and in vivo studies, we demonstrated that ADV can control regenerative processes by releasing growth factors and/or modulating micromechanics in ARSs. Precise, spatial patterning of emulsion within an ARS could be beneficial for ADV-induced modulation of biochemical and biophysical cues. However, precise patterning is limited using conventional bulk polymerization techniques. Here, we developed an extrusion-based method for bioprinting ARSs with micropatterned structures. Emulsions were loaded within bioink formulations containing fibrin, hyaluronic acid and/or alginate. Experimental as well as theoretical studies elucidated the interrelations between printing parameters, needle geometry, rheological properties of the bioink, and the process-induced mechanical stresses during bioprinting. The shear thinning properties of the bioinks enabled use of lower extrusion pressures resulting in decreased shear stresses and shorter residence times, thereby facilitating high viability for cell-loaded bioinks. Bioprinting yielded greater alignment of fibrin fibers in ARSs compared to conventionally polymerized ARSs. Bioprinted ARSs also enabled generation of ADV at high spatial resolutions, which were otherwise not achievable in conventional ARSs, and acoustically-driven collapse of ADV-induced bubbles. Overall, bioprinting could aid in optimizing ARSs for therapeutic applications.
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Affiliation(s)
- Mitra Aliabouzar
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Adam W.Y. Ley
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Sabine Meurs
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Andrew J. Putnam
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brendon M. Baker
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Oliver D. Kripfgans
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
- Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - J. Brian Fowlkes
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
- Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Mario L. Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
- Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
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8
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Xavierselvan M, Cook J, Duong J, Diaz N, Homan K, Mallidi S. Photoacoustic nanodroplets for oxygen enhanced photodynamic therapy of cancer. PHOTOACOUSTICS 2022; 25:100306. [PMID: 34917471 PMCID: PMC8666552 DOI: 10.1016/j.pacs.2021.100306] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 09/07/2021] [Accepted: 09/21/2021] [Indexed: 05/20/2023]
Abstract
Photodynamic therapy (PDT) is a well-known cancer therapy that utilizes light to excite a photosensitizer and generate cytotoxic reactive oxygen species (ROS). The efficacy of PDT primarily depends on the photosensitizer and oxygen concentration in the tumor. Hypoxia in solid tumors promotes treatment resistance, resulting in poor PDT outcomes. Hence, there is a need to combat hypoxia while delivering sufficient photosensitizer to the tumor for ROS generation. Here we showcase our unique theranostic perfluorocarbon nanodroplets as a triple agent carrier for oxygen, photosensitizer, and indocyanine green that enables light triggered spatiotemporal delivery of oxygen to the tumors. We evaluated the characteristics of the nanodroplets and validated their ability to deliver oxygen via photoacoustic monitoring of blood oxygen saturation and subsequent PDT efficacy in a murine subcutaneous tumor model. The imaging results were validated with an oxygen sensing probe, which showed a 9.1 fold increase in oxygen content inside the tumor, following systemic administration of the nanodroplets. These results were also confirmed with immunofluorescence. In vivo studies showed that nanodroplets held higher rates of treatment efficacy than a clinically available benzoporphyrin derivative formulation. Histological analysis showed higher necrotic area within the tumor with perfluoropentane nanodroplets. Overall, the photoacoustic nanodroplets can significantly enhance image-guided PDT and has demonstrated substantial potential as a valid theranostic option for patient-specific photodynamic therapy-based treatments.
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Key Words
- 1O2, singlet oxygen
- BPD, benzoporphyrin derivative
- DLS, dynamic light scattering
- DPPC, 1,2-dipalmitoyl-sn-glycero-3-phosphocholine
- DSPE-mPEG, 1,2-distearoyl-sn-glycero-3-phosphoethanolamine-N-[methoxy(polyethylene glycol)-2000]
- H&E, hematoxylin and eosin
- HbT, total hemoglobin
- Hypoxia
- ICG, indocyanine green
- IF, immunofluorescence
- Image guided PDT
- MTT, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
- NIR, near infrared radiation
- PA, photoacoustic
- PBS, phosphate buffered saline
- PDT, photodynamic therapy
- PFC, perfluorocarbon
- PFP, perfluoropentane
- PS, photosensitizer
- Perfluorocarbon nanodroplets
- Photoacoustic imaging
- Photodynamic therapy
- ROS, reactive oxygen species
- SOSG, singlet oxygen sensor green
- StO2, oxygen saturation
- TBAI, tertbutylammonium iodide
- pO2, partial pressure of oxygen
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Affiliation(s)
- Marvin Xavierselvan
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | | | - Jeanne Duong
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | - Nashielli Diaz
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
| | | | - Srivalleesha Mallidi
- Department of Biomedical Engineering, Tufts University, Medford, MA 02155, USA
- Wellman Center for Photomedicine, Massachusetts General Hospital, Boston, MA 02114, USA
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9
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Dong F, An J, Zhang J, Yin J, Guo W, Wang D, Feng F, Huang S, Zhang J, Cheng H. Blinking Acoustic Nanodroplets Enable Fast Super-resolution Ultrasound Imaging. ACS NANO 2021; 15:16913-16923. [PMID: 34647449 DOI: 10.1021/acsnano.1c07896] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The advent of localization-based super-resolution ultrasound (SRUS) imaging creates a vista for precision vasculature and hemodynamic measurements in brain science, cardiovascular diseases, and cancer. As blinking fluorophores are crucial to super-resolution optical imaging, blinking acoustic contrast agents enabling ultrasound localization microscopy have been highly sought, but only with limited success. Here we report on the discovery and characterization of a type of blinking acoustic nanodroplets (BANDs) ideal for SRUS. BANDs of 200-500 nm diameters comprise a perfluorocarbon-filled core and a shell of DSPC, Pluronic F68, and DSPE-PEG2000. When driven by clinically safe acoustic pulses (MI < 1.9) provided by a diagnostic ultrasound transducer, BANDs underwent reversible vaporization and reliquefaction, manifesting as "blinks", at rates of up to 5 kHz. By sparse activation of perfluorohexane-filled BANDs-C6 at high concentrations, only 100 frames of ultrasound imaging were sufficient to reconstruct super-resolution images of a no-flow tube through either cumulative localization or temporal radiality autocorrelation. Furthermore, the use of high-density BANDs-C6-4 (1 × 108/mL) with a 1:9 admixture of perfluorohexane and perfluorobutane supported the fast SRUS imaging of muscle vasculature in live animals, at 64 μm resolution requiring only 100 frames per layer. We anticipate that the BANDs developed here will greatly boost the application of SRUS in both basic science and clinical settings.
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Affiliation(s)
- Feihong Dong
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- State Key Laboratory of Membrane Biology, National Biomedical Imaging Center, Peking-Tsinghua Center for Life Sciences, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China
| | - Jian An
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Jiabin Zhang
- State Key Laboratory of Membrane Biology, National Biomedical Imaging Center, Peking-Tsinghua Center for Life Sciences, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China
| | - Jingyi Yin
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Wenyu Guo
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Di Wang
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Feng Feng
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Shuo Huang
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
| | - Jue Zhang
- Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China
- College of Engineering, Peking University, Beijing 100871, China
- National Biomedical Imaging Center, Peking University, Beijing 100871, China
| | - Heping Cheng
- State Key Laboratory of Membrane Biology, National Biomedical Imaging Center, Peking-Tsinghua Center for Life Sciences, Institute of Molecular Medicine, College of Future Technology, Peking University, Beijing 100871, China
- National Biomedical Imaging Center, Peking University, Beijing 100871, China
- Research Unit of Mitochondria in Brain Diseases, Chinese Academy of Medical Sciences, PKU-Nanjing Institute of Translational Medicine, Nanjing 211899, China
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Chen C, Wang Y, Tang Y, Wang L, Jiang F, Luo Y, Gao X, Li P, Zou J. Bifidobacterium-mediated high-intensity focused ultrasound for solid tumor therapy: comparison of two nanoparticle delivery methods. Int J Hyperthermia 2021; 37:870-878. [PMID: 32689830 DOI: 10.1080/02656736.2020.1791365] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
PURPOSE This study was conducted to prepare a novel tumor-biotargeting high-intensity focused ultrasound (HIFU) synergist for indirectly delivering lipid nanoparticles based on the targeting ability of Bifidobacterium longum to the hypoxic region of solid tumors. The effects of two different delivery methods on the imaging and treatment of solid tumors enhanced by lipid nanoparticles were compared. METHODS Biotinylated lipid nanoparticles coated with PFH were prepared, cross-linked with B. longum in vitro using a streptavidin-conjugated B. longum antibody (SBA), and observed and detected by laser confocal microscopy and flow cytometry. Solid tumors were treated with HIFU and PFH/BL-NPs. The effects of different delivery methods on the tumor targeting and efficiency of retention of PFH/BL-NPs were observed using Small animal live imaging and frozen sections from small animals. RESULTS The PFH/BL-NPs prepared in this study showed good biocompatibility and safety. PFH/BL-NPs and B. longum were cross-linked in a cluster-like manner (confocal laser scanning microscope) in vitro, with a cross-linking rate of 84 ± 6.23% (flow cytometry). The delivery of B. longum followed by that of PFH/BL-NPs not only enhanced the ability of PFH/BL-NPs to target solid tumors (small animal live imaging), but also increased the retention time of PFH/BL-NPs in the tumor (frozen slices), enhancing the effect of the HIFU synergist. CONCLUSION Delivery of B. longum followed by that of PFH/BL-NPs can enhance the imaging of solid tumors and effectively improve the efficiency of HIFU treatment of solid tumors, providing a basis for further clinical work.
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Affiliation(s)
- Chun Chen
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Yaotai Wang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Yu Tang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Lu Wang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Fujie Jiang
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Yong Luo
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Xuan Gao
- Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
| | - Pan Li
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing, China
| | - Jianzhong Zou
- State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, China.,Chongqing Key Laboratory of Biomedical Engineering, Chongqing Medical University, Chongqing, China
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11
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Ferri S, Wu Q, De Grazia A, Polydorou A, May JP, Stride E, Evans ND, Carugo D. Tailoring the size of ultrasound responsive lipid-shelled nanodroplets by varying production parameters and environmental conditions. ULTRASONICS SONOCHEMISTRY 2021; 73:105482. [PMID: 33588208 PMCID: PMC7901031 DOI: 10.1016/j.ultsonch.2021.105482] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 01/08/2021] [Accepted: 01/27/2021] [Indexed: 05/06/2023]
Abstract
Liquid perfluorocarbon nanodroplets (NDs) are an attractive alternative to microbubbles (MBs) for ultrasound-mediated therapeutic and diagnostic applications. ND size and size distribution have a strong influence on their behaviour in vivo, including extravasation efficiency, circulation time, and response to ultrasound stimulation. Thus, it is desirable to identify ways to tailor the ND size and size distribution during manufacturing. In this study phospholipid-coated NDs, comprising a perfluoro-n-pentane (PFP) core stabilised by a DSPC/PEG40s (1,2-distearoyl-sn-glycero-3-phosphocholine and polyoxyethylene(40)stearate, 9:1 molar ratio) shell, were produced in phosphate-buffered saline (PBS) by sonication. The effect of the following production-related parameters on ND size was investigated: PFP concentration, power and duration of sonication, and incorporation of a lipophilic fluorescent dye. ND stability was also assessed at both 4 °C and 37 °C. When a sonication pulse of 6 s and 15% duty cycle was employed, increasing the volumetric concentration of PFP from 5% to 15% v/v in PBS resulted in an increase in ND diameter from 215.8 ± 16.8 nm to 408.9 ± 171.2 nm. An increase in the intensity of sonication from 48 to 72 W (with 10% PFP v/v in PBS) led to a decrease in ND size from 354.6 ± 127.2 nm to 315.0 ± 100.5 nm. Increasing the sonication time from 20 s to 40 s (using a pulsed sonication with 30% duty cycle) did not result in a significant change in ND size (in the range 278-314 nm); however, when it was increased to 60 s, the average ND diameter reduced to 249.7 ± 9.7 nm, which also presented a significantly lower standard deviation compared to the other experimental conditions investigated (i.e., 9.7 nm vs. > 49.4 nm). The addition of the fluorescent dye DiI at different molar ratios did not affect the ND size distribution. NDs were stable at 4 °C for up to 6 days and at 37 °C for up to 110 min; however, some evidence of ND-to-MB phase transition was observed after 40 min at 37 °C. Finally, phase transition of NDs into MBs was demonstrated using a tissue-mimicking flow phantom under therapeutic ultrasound exposure conditions (ultrasound frequency: 0.5 MHz, acoustic pressure: 2-4 MPa, and pulse repetition frequency: 100 Hz).
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Affiliation(s)
- Sara Ferri
- Faculty of Engineering and Physical Sciences, Department of Mechanical Engineering, University of Southampton, UK; Centre for Human Development, Stem Cells and Regeneration, Bioengineering Sciences, Faculty of Medicine, University of Southampton, UK; Institute for Life Sciences (IfLS), University of Southampton, UK
| | - Qiang Wu
- Department of Engineering Science, University of Oxford, UK
| | - Antonio De Grazia
- Faculty of Engineering and Physical Sciences, Department of Mechanical Engineering, University of Southampton, UK
| | - Anastasia Polydorou
- Faculty of Engineering and Physical Sciences, Department of Mechanical Engineering, University of Southampton, UK; Centre for Human Development, Stem Cells and Regeneration, Bioengineering Sciences, Faculty of Medicine, University of Southampton, UK
| | - Jonathan P May
- Faculty of Engineering and Physical Sciences, Department of Mechanical Engineering, University of Southampton, UK; Centre for Human Development, Stem Cells and Regeneration, Bioengineering Sciences, Faculty of Medicine, University of Southampton, UK
| | - Eleanor Stride
- Department of Engineering Science, University of Oxford, UK
| | - Nicholas D Evans
- Faculty of Engineering and Physical Sciences, Department of Mechanical Engineering, University of Southampton, UK; Centre for Human Development, Stem Cells and Regeneration, Bioengineering Sciences, Faculty of Medicine, University of Southampton, UK; Institute for Life Sciences (IfLS), University of Southampton, UK
| | - Dario Carugo
- Department of Pharmaceutics, School of Pharmacy, University College London (UCL), UK.
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12
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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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13
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Aliabouzar M, Kripfgans OD, Wang WY, Baker BM, Brian Fowlkes J, Fabiilli ML. Stable and transient bubble formation in acoustically-responsive scaffolds by acoustic droplet vaporization: theory and application in sequential release. ULTRASONICS SONOCHEMISTRY 2021; 72:105430. [PMID: 33401189 PMCID: PMC7803826 DOI: 10.1016/j.ultsonch.2020.105430] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 12/09/2020] [Accepted: 12/14/2020] [Indexed: 05/08/2023]
Abstract
Acoustically-responsive scaffolds (ARSs), which are fibrin hydrogels containing monodispersed perfluorocarbon (PFC) emulsions, respond to ultrasound in an on-demand, spatiotemporally-controlled manner via a mechanism termed acoustic droplet vaporization (ADV). Previously, ADV has been used to control the release of bioactive payloads from ARSs to stimulate regenerative processes. In this study, we used classical nucleation theory (CNT) to predict the nucleation pressure in emulsions of different PFC cores as well as the corresponding condensation pressure of the ADV-generated bubbles. According to CNT, the threshold bubble radii above which ADV-generated bubbles remain stable against condensation were 0.4 µm and 5.2 µm for perfluoropentane (PFP) and perfluorohexane (PFH) bubbles, respectively, while ADV-generated bubbles of any size in perfluorooctane (PFO) condense back to liquid at ambient condition. Additionally, consistent with the CNT findings, stable bubble formation from PFH emulsion was experimentally observed using confocal imaging while PFO emulsion likely underwent repeated vaporization and recondensation during ultrasound pulses. In further experimental studies, we utilized this unique feature of ADV in generating stable or transient bubbles, through tailoring the PFC core and ultrasound parameters (excitation frequency and pulse duration), for sequential delivery of two payloads from PFC emulsions in ARSs. ADV-generated stable bubbles from PFH correlated with complete release of the payload while transient ADV resulted in partial release, where the amount of payload release increased with the number of ultrasound exposure. Overall, these results can be used in developing drug delivery strategies using ARSs.
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Affiliation(s)
- Mitra Aliabouzar
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA
| | - Oliver D Kripfgans
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - William Y Wang
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - Brendon M Baker
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA
| | - J Brian Fowlkes
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA
| | - Mario L Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, MI, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, USA; Applied Physics Program, University of Michigan, Ann Arbor, MI, USA.
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14
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Choi W, Kim C. Synergistic agents for tumor-specific therapy mediated by focused ultrasound treatment. Biomater Sci 2021; 9:422-436. [PMID: 33211030 DOI: 10.1039/d0bm01364a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
This minireview highlights the recent advances in the therapeutic agents that aim to provide synergistic enhancements of focused ultrasound treatment of tumors. Even though focused ultrasound therapy itself can bring therapeutic effects in cancers, many biochemical agents have been reported in the literature to enhance the treatment efficacy significantly. Until now, many mechanisms have been researched to advance the therapy, such as sonodynamic-plus-chemo-therapy, microbubble-aided therapy, localized release or delivery of nanomaterials, and multimodal image-guided therapy. Here, the novel materials adopted in each mechanism are briefly reviewed to provide a trend in the field and encourage future research towards the successful deployment of focused ultrasound therapy in real clinical environments.
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Affiliation(s)
- Wonseok Choi
- Departments of Electrical Engineering, Creative IT Engineering, Mechanical Engineering, Interdisciplinary Bioscience and Bioengineering, and Medical Device Innovation Center, Pohang University of Science and Technology (POSTECH), 37673 Republic of Korea.
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15
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Melich R, Zorgani A, Padilla F, Charcosset C. Preparation of perfluorocarbon emulsions by premix membrane emulsification for Acoustic Droplet Vaporization (ADV) in biomedical applications. Biomed Microdevices 2020; 22:62. [PMID: 32880712 DOI: 10.1007/s10544-020-00504-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Perfluorocarbon (PFC) droplets are used in acoustic droplet vaporization (ADV), a phenomenon where droplets vaporize into gas microbubbles under exposure to ultrasound. The size and the size distribution of a phase change contrast agent is an important factor in determining the ADV threshold and the biodistribution. Thus, high throughout manufacturing of uniform-sized droplets, required to maintain spatial control of the vaporization process, remains challenging. This work describes a parametric evaluation of a novel process using premix membrane emulsification (PME) to produce homogeneous PFC emulsions at high rate with moderate pressure using Shirasu Porous Glass (SPG) membranes. In this study, we investigated the effect of several process parameters on the resulting pressure and droplet size: membrane pore size, flow rate, and dispersed phase type. The functionality of the manufactured emulsions for ADV was also demonstrated. Vaporization of the PFC emulsions was obtained using an imaging ultrasound transducer at 7.813 MHz, and the ADV thresholds were determined. Here, the pressure threshold for ADV was determined to be 1.49 MPa for uniform-sized perfluorohexane (PFHex) droplets with a mean size of 1.51 μm and a sharp distribution (CV and span respectively of 20% and 0.6). Thus, a uniform-sized droplet showed a more homogeneous vaporization with a uniform response in the focal region of the transducer. Indeed, polydispersed droplets had a more diffuse response outside the focal region due to the presence of large droplets that vaporize at lower energies. The ADV threshold of uniform-sized PFC droplets was found to decrease with the droplet diameter and the bulk fluid temperature, and to increase with the boiling temperature of PFC and the presence of an oil layer surrounding the PFC core.
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Affiliation(s)
- Romain Melich
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F-69100, Villeurbanne, France
- LabTAU, INSERM, Centre Léon Bérard, Université Lyon 1, Univ-Lyon, F-69003, LYON, France
| | - Ali Zorgani
- LabTAU, INSERM, Centre Léon Bérard, Université Lyon 1, Univ-Lyon, F-69003, LYON, France
| | - Frédéric Padilla
- LabTAU, INSERM, Centre Léon Bérard, Université Lyon 1, Univ-Lyon, F-69003, LYON, France.
- Department of Radiology, University of Virginia School of Medicine, Charlottesville, VA, USA.
- Focused Ultrasound Foundation, 1230 Cedars Court, Suite 206, Charlottesville, VA, USA.
| | - Catherine Charcosset
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, LAGEPP UMR 5007, 43 boulevard du 11 novembre 1918, F-69100, Villeurbanne, France.
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16
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Cimorelli M, Flynn MA, Angel B, Fafarman A, Kohut A, Wrenn S. An Ultrasound Enhancing Agent with Nonlinear Acoustic Activity that Depends on the Presence of an Electric Field. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:2370-2387. [PMID: 32616427 DOI: 10.1016/j.ultrasmedbio.2020.04.038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 03/30/2020] [Accepted: 04/03/2020] [Indexed: 06/11/2023]
Abstract
The nonlinear acoustic properties of microbubble ultrasound enhancing agents have allowed for the development of subharmonic, second harmonic, and contrast-pulse sequence ultrasound imaging modes, which enhance the quality, reduce the noise, and improve the diagnostic capabilities of clinical ultrasound. This study details acoustic scattering responses of perfluorobutane (PFB) microbubbles, an un-nested perfluoropentane (PFP) nanoemulsion, and two nested PFP nanoemulsions-one comprising a negatively charged phospholipid bilayer and another comprising a zwitterionic phospholipid bilayer-when excited at 1 or 2.25 MHz over a peak negative pressure range of 200 kPa to 4 MPa in the absence and presence of a 1-Hz, 1-V/cm electric field. The only sample that exhibited an increase in nonlinear activity in the presence of an electric field at both excitation frequencies was the negatively charged nested PFP nanoemulsion; the most pronounced effect was observed at an excitation of 2.25 MHz. Interestingly, the application of an electric field not only increased the nonlinear acoustic activity of the negatively charged nested PFP nanoemulsion but increased it beyond that seen when the nanoemulsion is un-nested and on the same scale as PFB microbubbles.
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Affiliation(s)
- Michael Cimorelli
- Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania, USA
| | - Michael A Flynn
- Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania, USA
| | - Brett Angel
- Cardiology, Drexel University College of Medicine, Philadelphia, Pennsylvania, USA
| | - Aaron Fafarman
- Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania, USA
| | - Andrew Kohut
- Cardiology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Steven Wrenn
- Chemical and Biological Engineering, Drexel University, Philadelphia, Pennsylvania, USA
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17
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Liu J, Li S, Liu L, Zhu Z. A fluorous biphase drug delivery system triggered by low frequency ultrasound: controlled release from perfluorous discoidal porous silicon particles. NANOSCALE ADVANCES 2020; 2:3561-3569. [PMID: 36134262 PMCID: PMC9419597 DOI: 10.1039/d0na00324g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/25/2020] [Indexed: 06/01/2023]
Abstract
Conventional drug delivery systems face unsatisfactory loading efficiency, poor biological bypass, and uncontrollable release, which are great barriers for improving the treatment of many diseases. Herein, a proof-of-concept of a fluorous biphase drug delivery system (FB-DDS) trigged by low frequency ultrasound (LFUS) is proposed for the first time, where promoted incorporation and stabilization of therapeutic agents in nanocarriers was achieved through fluorine-fluorine interactions, and the encapsulated drugs were controllably released by external sources, resulting in minimized nonspecific toxicity and enhanced therapeutic efficacy. The FB-DDS was constructed from monodisperse, discoidal porous silicon particles (PSP) and was functionalized with 1H,1H,2H,2H-perfluorodecyltrimethoxysilane (FAS17) for loading perfluoropentane (PFP) and fluorinated drugs through fluorine-fluorine interactions. This delivery system was demonstrated by utilizing model compounds including a fluorous-tagged fluorescein and a fluorine containing antibiotic ciprofloxacin. Loading of the model molecules into fluorocarbon-coated carriers was facilitated by fluorous interactions, whereas ejection of the model molecules was promoted by applying LFUS to rapidly evaporate PFP. In the in vitro test, these carriers loaded with fluorine containing ciprofloxacin exhibited excellent antimicrobial activity against Pseudomonas aeruginosa biofilm formation. Overall, this innovative stimulus-responsive fluorous biphase drug delivery system will be a promising candidate for practical applications as well as encouraging further investigation of drug delivery and controlled release strategies.
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Affiliation(s)
- Jing Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
| | - Shuo Li
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
| | - Lina Liu
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
| | - Zhiling Zhu
- College of Materials Science and Engineering, Qingdao University of Science and Technology Qingdao Shandong China 266042
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18
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Pinto RM, Lopes-de-Campos D, Martins MCL, Van Dijck P, Nunes C, Reis S. Impact of nanosystems in Staphylococcus aureus biofilms treatment. FEMS Microbiol Rev 2020; 43:622-641. [PMID: 31420962 PMCID: PMC8038934 DOI: 10.1093/femsre/fuz021] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 08/15/2019] [Indexed: 12/17/2022] Open
Abstract
Staphylococcus aureus (S. aureus) is considered by the World Health Organization as a high priority pathogen for which new therapies are needed. This is particularly important for biofilm implant-associated infections once the only available treatment option implies a surgical procedure combined with antibiotic therapy. Consequently, these infections represent an economic burden for Healthcare Systems. A new strategy has emerged to tackle this problem: for small bugs, small particles. Here, we describe how nanotechnology-based systems have been studied to treat S. aureus biofilms. Their features, drawbacks and potentialities to impact the treatment of these infections are highlighted. Furthermore, we also outline biofilm models and assays required for preclinical validation of those nanosystems to smooth the process of clinical translation.
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Affiliation(s)
- Rita M Pinto
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.,Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, B-3001 Leuven, Belgium.,VIB-KU Leuven, Center for Microbiology, B-3001 Leuven, Belgium.,i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto; INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - Daniela Lopes-de-Campos
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - M Cristina L Martins
- i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto; INEB, Instituto de Engenharia Biomédica, Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal.,ICBAS, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Patrick Van Dijck
- Laboratory of Molecular Cell Biology, Institute of Botany and Microbiology, KU Leuven, B-3001 Leuven, Belgium.,VIB-KU Leuven, Center for Microbiology, B-3001 Leuven, Belgium
| | - Cláudia Nunes
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
| | - Salette Reis
- LAQV, REQUIMTE, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua de Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal
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19
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Xu T, Cui Z, Li D, Cao F, Xu J, Zong Y, Wang S, Bouakaz A, Wan M, Zhang S. Cavitation characteristics of flowing low and high boiling-point perfluorocarbon phase-shift nanodroplets during focused ultrasound exposures. ULTRASONICS SONOCHEMISTRY 2020; 65:105060. [PMID: 32199255 DOI: 10.1016/j.ultsonch.2020.105060] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 01/15/2020] [Accepted: 03/07/2020] [Indexed: 06/10/2023]
Abstract
This work investigated and compared the dynamic cavitation characteristics between low and high boiling-point phase-shift nanodroplets (NDs) under physiologically relevant flow conditions during focused ultrasound (FUS) exposures at different peak rarefactional pressures. A passive cavitation detection (PCD) system was used to monitor cavitation activity during FUS exposure at various acoustic pressure levels. Root mean square (RMS) amplitudes of broadband noise, spectrograms of the passive cavitation detection signals, and normalized inertial cavitation dose (ICD) values were calculated. Cavitation activity of low-boiling-point perfluoropentane (PFP) NDs and high boiling-point perfluorohexane (PFH) NDs flowing at in vitro mean velocities of 0-15 cm/s were compared in a 4-mm diameter wall-less vessel in a transparent tissue-mimicking phantom. In the static state, both types of phase-shift NDs exhibit a sharp rise in cavitation intensity during initial FUS exposure. Under flow conditions, cavitation activity of the PFH NDs reached the steady state less rapidly compared to PFP NDs under the lower acoustic pressure (1.35 MPa); at the higher acoustic pressure (1.65 MPa), the RMS amplitude increased more sharply during the initial FUS exposure period. In particular, the RMS-time curves of the PFP NDs shifted upward as the mean flow velocity increased from 0 to 15 cm/s; the RMS amplitude of the PFH ND solution increased from 0 to 10 cm/s and decreased at 15 cm/s. Moreover, amplitudes of the echo signal for the low boiling-point PFP NDs were higher compared to the high boiling-point PFH NDs in the lower frequency range, whereas the inverse occurred in the higher frequency range. Both PFP and PFH NDs showed increased cavitation activity in the higher frequency under the flow condition compared to the static state, especially PFH NDs. At 1.65 MPa, normalized ICD values for PFH increased from 0.93 ± 0.03 to 0.96 ± 0.04 and from 0 to 10 cm/s, then decreased to 0.86 ± 0.05 at 15 cm/s. This work contributes to our further understanding of cavitation characteristics of phase-shift NDs under physiologically relevant flow conditions during FUS exposure. In addition, the results provide a reference for selecting suitable phase-shift NDs to enhance the efficiency of cavitation-mediated ultrasonic applications.
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Affiliation(s)
- Tianqi Xu
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Zhiwei Cui
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Dapeng Li
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Fangyuan Cao
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Jichen Xu
- Institute of Artificial Intelligence and Robotics, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China; National Engineering Laboratory for Visual Information Processing and Applications, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Yujin Zong
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | - Supin Wang
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
| | | | - Mingxi Wan
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
| | - Siyuan Zhang
- The Key Laboratory of Biomedical Information Engineering of the Ministry of Education, Department of Biomedical Engineering, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
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Li Y, Liu R, Liu L, Zhang Y, Sun J, Ma P, Wu Y, Duan S, Zhang L. Study on phase transition and contrast-enhanced imaging of ultrasound-responsive nanodroplets with polymer shells. Colloids Surf B Biointerfaces 2020; 189:110849. [DOI: 10.1016/j.colsurfb.2020.110849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Revised: 02/02/2020] [Accepted: 02/04/2020] [Indexed: 12/01/2022]
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21
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Chen W, Cai H, Zhang X, Huang D, Yang J, Chen C, Qian Q, He Y, Chen Z. Physiologic Factors Affecting the Circulatory Persistence of Copolymer Microbubbles and Comparison of Contrast-Enhanced Effects between Copolymer Microbubbles and Sonovue. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:721-734. [PMID: 31899039 DOI: 10.1016/j.ultrasmedbio.2019.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 11/21/2019] [Accepted: 11/30/2019] [Indexed: 06/10/2023]
Abstract
Ultrasound contrast agents have been widely used in clinical diagnosis. Knowledge of the physiologic factors affecting circulatory persistence is helpful in preparing long-lasting microbubbles (MBs) for blood perfusion and drug delivery research. In the study described here, we prepared copolymer MBs, compared their characteristics and contrast-enhanced effects with those of SonoVue and investigated the influence of external pressure, temperature, plasma components, renal microcirculation and cardiac motion on their circulatory persistence. The mean size of the copolymer MBs was 3.57 μm, larger than that of SonoVue. The copolymer MBs had longer circulatory persistence than SonoVue. At external pressures of 110 and 150 mm Hg, neither the quantity nor the morphology of the copolymer MBs changed. Further, their quantity and size were similar after incubation at 4°C and 39.4°C and when rabbit plasma and saline were compared. In vivo contrast-enhanced ultrasonography revealed a slightly larger area under the curve for the renal artery than for the renal vein. Thus, copolymer MBs exhibited good stability. However, the quantity of copolymer MBs decreased significantly after 180 s of circulation in an isolated toad heart perfusion model, indicating that cardiac motion was the main factor affecting their circulatory persistence.
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Affiliation(s)
- Wanping Chen
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Hongjiao Cai
- Fisheries College of Jimei University, Xiamen, China
| | - Xiujuan Zhang
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Danfeng Huang
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Jing Yang
- Department of Pharmacy, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Cong Chen
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Qingfu Qian
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Yimi He
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China
| | - Zhikui Chen
- Department of Ultrasound, Affiliated Union Hospital of Fujian Medical University, Fuzhou, China.
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22
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Yaqiong LP, Ruiqing LMD, Shaobo DMD, Lianzhong ZMD. Advances in Targeted Tumor Diagnosis and Therapy Based on Ultrasound-Responsive Nanodroplets. ADVANCED ULTRASOUND IN DIAGNOSIS AND THERAPY 2020. [DOI: 10.37015/audt.2020.200043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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23
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Aliabouzar M, Lu X, Kripfgans OD, Fowlkes JB, Fabiilli ML. Acoustic Droplet Vaporization in Acoustically Responsive Scaffolds: Effects of Frequency of Excitation, Volume Fraction and Threshold Determination Method. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:3246-3260. [PMID: 31561948 PMCID: PMC6823163 DOI: 10.1016/j.ultrasmedbio.2019.08.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 08/11/2019] [Accepted: 08/23/2019] [Indexed: 05/03/2023]
Abstract
Ultrasound-induced vaporization of liquid perfluorocarbon (PFC) droplets into microbubbles, termed acoustic droplet vaporization (ADV), has potential therapeutic and diagnostic applications. Recently, we demonstrated how ADV-a threshold-based phenomenon-can modulate the release of biomolecules from composite hydrogels, thereby stimulating regenerative processes, such as angiogenesis. These composite hydrogels, called acoustically responsive scaffolds (ARSs), consist of monodispersed, micron size PFC emulsions embedded within a fibrin matrix. This study investigated the effects of frequency of excitation (2.25, 5, 7.5 and 10 MHz) and volume fraction (0.05%, 0.2% and 1% [v/v]) of monodispersed, double emulsions in the ARSs on the ADV threshold. We determined and compared the ADV thresholds via acoustic methods, including active detection, passive detection and attenuation, as well as an echogenicity-based method using B-mode imaging. The ADV threshold determined via these four techniques showed an increasing trend with frequency of excitation. Further analysis of the wave propagation showed that the amplitudes of high frequency harmonics were diminished in ARSs with high volume fractions of emulsion. The ADV threshold inversely correlated with the volume fraction of emulsion at the lowest excitation frequency. However, at higher frequencies, possibly due to the high acoustic reflectivity of the PFC emulsions, the ADV threshold correlated directly with the volume fraction of the emulsion. Additionally, the ADV efficiency correlated with the supra-threshold acoustic pressure. Overall, these results elucidate fundamental acoustic properties of the ARSs, which can be used in future applications.
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Affiliation(s)
- Mitra Aliabouzar
- Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Xiaofang Lu
- Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Oliver D Kripfgans
- Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA; Applied Physics Program, University of Michigan, Ann Arbor, Michigan, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - J Brian Fowlkes
- Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA; Applied Physics Program, University of Michigan, Ann Arbor, Michigan, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA
| | - Mario L Fabiilli
- Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA; Applied Physics Program, University of Michigan, Ann Arbor, Michigan, USA; Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan, USA.
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24
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Yuan Z, Demith A, Stoffel R, Zhang Z, Park YC. Light-activated doxorubicin-encapsulated perfluorocarbon nanodroplets for on-demand drug delivery in an in vitro angiogenesis model: Comparison between perfluoropentane and perfluorohexane. Colloids Surf B Biointerfaces 2019; 184:110484. [PMID: 31522023 DOI: 10.1016/j.colsurfb.2019.110484] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/30/2019] [Accepted: 08/31/2019] [Indexed: 10/26/2022]
Abstract
Phase-transition perfluorocarbon (PFC) nanodroplets have been developed for on-demand drug delivery carriers with external triggers such as ultrasound or laser irradiation techniques. Although various perfluorocarbons, including perfluoropentane (C5F12) and perfluorohexane (C6F14), have been investigated for their theranostic use, comparison of the phase-transition efficiency, the drug delivery efficacy by light activation, and physical properties of the PFC nanodroplets have not been reported. We have synthesized gold nanorod-coated doxorubicin-encapsulated perfluorocarbon nanodroplets using perfluoropentane and perfluorohexane as light-activated on-demand drug delivery carriers, called PF5 and PF6, respectively. When gold nanorods on the perfluorocarbon nanodroplets resonate with a laser wavelength, plasmonic heat generated on the gold nanorods vaporizes the nanodroplets to gas bubbles (phase-transition), and releases the encapsulated drug from the nanodroplet core. Overall, the nanodroplet size, drug encapsulation efficiency, number density, and cytotoxicity were similar between PF5 and PF6. However, the long-term stability against passive phase-transition or coalescence in physiological conditions and the phase-transition efficiency were different from each other. PF6 was better in long-term stability but showed lower phase-transition than PF5. The lower phase-transition of PF6 might have led to lower drug delivery efficiency compared to PF5. This is probably because PF6 has higher temperature thresholds required for phase-transition due to its higher boiling point. The study demonstrated feasibility of the light-activated nanodroplets for on-demand targeted nanotherapy, which suppresses the development of angiogenesis.
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Affiliation(s)
- Zheng Yuan
- Department of Chemical & Environmental Engineering, College of Engineering & Applied Sciences, USA
| | - Alec Demith
- Medical Sciences Program, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Ryan Stoffel
- Department of Chemical & Environmental Engineering, College of Engineering & Applied Sciences, USA
| | - Zhe Zhang
- Department of Chemical & Environmental Engineering, College of Engineering & Applied Sciences, USA
| | - Yoonjee C Park
- Department of Chemical & Environmental Engineering, College of Engineering & Applied Sciences, USA.
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25
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Abstract
Gas-involving cancer theranostics have attracted considerable attention in recent years due to their high therapeutic efficacy and biosafety. We have reviewed the recent significant advances in the development of stimuli-responsive gas releasing molecules (GRMs) and gas nanogenerators for cancer bioimaging, targeted and controlled gas therapy, and gas-sensitized synergistic therapy. We have focused on gases with known anticancer effects, such as oxygen (O2), carbon monoxide (CO), nitric oxide (NO), hydrogen sulfide (H2S), hydrogen (H2), sulfur dioxide (SO2), carbon dioxide (CO2), and heavy gases that act via the gas-generating process. The GRMs and gas nanogenerators for each gas have been described in terms of the stimulation method, followed by their applications in ultrasound and multimodal imaging, and finally their primary and synergistic actions with other cancer therapeutic modalities. The current challenges and future possibilities of gas therapy and imaging vis-à-vis clinical translation have also been discussed.
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Affiliation(s)
- Lichan Chen
- College of Chemical Engineering , Huaqiao University , Xiamen , Fujian 361021 , P.R. China
| | - Shu-Feng Zhou
- College of Chemical Engineering , Huaqiao University , Xiamen , Fujian 361021 , P.R. China
| | - Lichao Su
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou , Fujian 350116 , P.R. China
| | - Jibin Song
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, College of Chemistry , Fuzhou University , Fuzhou , Fujian 350116 , P.R. China
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26
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Wang W, Jing T, Xia X, Tang L, Huang Z, Liu F, Wang Z, Ran H, Li M, Xia J. Melanin-loaded biocompatible photosensitive nanoparticles for controlled drug release in combined photothermal-chemotherapy guided by photoacoustic/ultrasound dual-modality imaging. Biomater Sci 2019; 7:4060-4074. [PMID: 31475710 DOI: 10.1039/c9bm01052a] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Combined photothermal-chemotherapy guided by multimodal imaging is a promising strategy for cancer diagnosis and treatment. Multifunctional nanoparticles, such as those comprising organic and inorganic compounds, have been extensively investigated for combined photothermal-chemotherapy; however, their application is still limited by their potential long-term toxicity and lack of contrast properties. To solve these problems, in this study, a new type of multifunctional nanoparticle for combined photothermal-chemotherapy guided by dual-modality imaging was prepared with endogenous melanin by multistep emulsification to enhance tumor ablation. The nanoparticles were coated with poly(lactide-co-glycolic acid) (PLGA) and loaded with paclitaxel (PTX), encapsulated melanin and perfluoropentane (PFP). The materials in the nanoparticles were endogenous, ensuring high stability, biocompatibility, and biosafety. Nanoparticles irradiated with a laser, which induced their phase transformation into microbubbles, exhibited high photothermal conversion efficiency, thereby achieving photoacoustic (PA)/ultrasound (US) dual-modality imaging to determine tumor location, boundary, and size and to monitor drug distribution. Furthermore, optical droplet vaporization (ODV) of the nanoparticles could trigger the release of PTX; thus, these nanoparticles are a useful drug carrier. In vivo and in vitro experiments revealed that a strong synergistic antitumor effect was achieved by combining the photothermal properties of the nanoparticles with a chemotherapy drug. Importantly, the cavitation, thermoelastic expansion, and sonoporation caused by the phase transformation of the nanoparticles could directly damage the tumors. These processes also promoted the release, penetration and absorption of the drug, further enhancing the effect of combined photothermal-chemotherapy on tumor suppression. Therefore, the multifunctional nanoparticles prepared in this study provide a new strategy of using endogenous materials for controlled near-infrared (NIR)-responsive drug release and combined photothermal-chemotherapy guided by multimodal imaging.
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Affiliation(s)
- Wenyuan Wang
- Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, PR China.
| | - Ting Jing
- Department of Radiology, Hospital (t.c.m) Affiliated to Southwest Medical University, Luzhou 646000, PR China
| | - Xiaorong Xia
- Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, PR China.
| | - Linmei Tang
- Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, PR China.
| | - Zhiqiang Huang
- Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, PR China.
| | - Fengqiu Liu
- Institute of Ultrasound Imaging & Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University; Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing 400010, PR China
| | - Zhigang Wang
- Institute of Ultrasound Imaging & Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University; Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing 400010, PR China
| | - Haitao Ran
- Institute of Ultrasound Imaging & Department of Ultrasound, The Second Affiliated Hospital of Chongqing Medical University; Chongqing Key Laboratory of Ultrasound Molecular Imaging, Chongqing 400010, PR China
| | - Mingxing Li
- Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, PR China.
| | - Jizhu Xia
- Department of Ultrasound, the Affiliated Hospital of Southwest Medical University, Luzhou 646000, PR China.
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27
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Kee ALY, Teo BM. Biomedical applications of acoustically responsive phase shift nanodroplets: Current status and future directions. ULTRASONICS SONOCHEMISTRY 2019; 56:37-45. [PMID: 31101274 DOI: 10.1016/j.ultsonch.2019.03.024] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/08/2019] [Accepted: 03/22/2019] [Indexed: 05/19/2023]
Abstract
The evolution of ultrasonic contrast agents to enhance the reflectivity of structures in the human body has consolidated ultrasound's stance as a reliable diagnostic imaging modality. A significant development within this field includes the advent of liquid nanodroplets that are capable of vaporising into gaseous microbubbles upon ultrasonic irradiation. This literature review will therefore appraise and summarise the available literature on the generation of phase-shift nanodroplets, their formulations, applications, safety issues, future developments and any implications that may inhibit their clinical implementation. The main findings of this review affirm that phase change nanodroplets do indeed demonstrate functionality in drug delivery and targeting and characterisation of tumours. Its bioeffects however, have not yet been extensively researched, prompting further exploration into how bubble size can be controlled once it has vaporised into microbubbles and the resulting complications. As such, future research should be directed towards determining the safety, longevity and suitability of phase-shift nanodroplets over contrast agents in current clinical use.
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Affiliation(s)
- Allison Loo Yong Kee
- Department of Medical Imaging and Radiation Sciences, Monash University, 10 Chancellors Walk, Clayton, Victoria 3800, Australia
| | - Boon Mian Teo
- School of Chemistry, Monash University, 19 Rainforest Walk, Clayton, Victoria 3800, Australia.
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28
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Zhou Q, Zeng Y, Xiong Q, Zhong S, Li P, Ran H, Yin Y, Reutelingsperger C, Prinze FW, Ling Z. Construction of CNA35 Collagen-Targeted Phase-Changeable Nanoagents for Low-Intensity Focused Ultrasound-Triggered Ultrasound Molecular Imaging of Myocardial Fibrosis in Rabbits. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23006-23017. [PMID: 31136144 DOI: 10.1021/acsami.9b05999] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Myocardial fibrosis plays an important role in the development of heart failure and malignant arrhythmia, which potentially increases the incidence of sudden cardiac death. Therefore, early detection of myocardial fibrosis is of great significance for evaluating the prognosis of patients and formulating appropriate treatment strategies. Late gadolinium-enhanced magnetic resonance imaging is considered as the currently effective strategy for noninvasive detection of myocardial fibrosis, but it still suffers from some critical issues. In this work, multifunctional CNA35-labeled perfluoropentane nanoparticles (CNA35-PFP NPs) have been elaborately designed and constructed for molecular imaging of fibrotic myocardium based on ultrasound imaging. These as-constructed CNA35-PFP NPs are intravenously infused into rabbit circulation with an animal model of myocardial infarction. Especially, these targeted CNA35-PFP NPs with nanoscale size could efficiently pass through the endothelial cell gap and adhere to the surface of fibroblasts in the fibrotic myocardium. Importantly, followed by low-intensity focused ultrasound irradiation on the myocardium, these intriguing CNA35-PFP NPs could transform from liquid into gaseous microbubbles, which further significantly enhanced the ultrasound contrast in the fibrotic area, facilitating the detection by diagnostic ultrasound imaging. Therefore, this work provides a desirable noninvasive, economical, and real-time imaging technique for the assessment of cardiac fibrosis with diagnostic ultrasound based on the rational design of liquid-to-gas phase-changeable nanoplatforms.
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Affiliation(s)
- Qin Zhou
- Department of Cardiology , Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Yalin Zeng
- Department of Cardiology , Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Qingsong Xiong
- Department of Cardiology , Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Shigen Zhong
- Institute of Ultrasound Imaging, Chongqing Key Laboratory of Ultrasound Molecular Imaging , The Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Pan Li
- Institute of Ultrasound Imaging, Chongqing Key Laboratory of Ultrasound Molecular Imaging , The Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Haitao Ran
- Institute of Ultrasound Imaging, Chongqing Key Laboratory of Ultrasound Molecular Imaging , The Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Yuehui Yin
- Department of Cardiology , Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
| | - Chris Reutelingsperger
- Department of Physiology, Cardiovascular Research Institute Maastricht , Maastricht University , P.O. Box 616 , 6200 MD , Maastricht , The Netherlands
| | - Frits W Prinze
- Department of Biochemistry, Cardiovascular Research Institute Maastricht , University of Maastricht , P.O. Box 616 , 6200 MD , Maastricht , The Netherlands
| | - Zhiyu Ling
- Department of Cardiology , Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
- Institute of Ultrasound Imaging, Chongqing Key Laboratory of Ultrasound Molecular Imaging , The Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , P. R. China
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29
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Nevozhay D, Weiger M, Friedl P, Sokolov KV. Spatiotemporally controlled nano-sized third harmonic generation agents. BIOMEDICAL OPTICS EXPRESS 2019; 10:3301-3316. [PMID: 31360600 PMCID: PMC6640828 DOI: 10.1364/boe.10.003301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 05/09/2023]
Abstract
Here, we present a new class of third harmonic generation (THG) imaging probes that can be activated with precise spatiotemporal control using non-linear excitation. These probes consist of lipid-coated perfluorocarbon nanodroplets with embedded visible chromophores. The droplets undergo phase transition from liquid to gas upon heating mediated by two-photon absorption of NIR light by the embedded dyes. Resulting microbubbles provide a sharp, local refractive index mismatch, which makes an excellent source of THG signal. Potential applications of these probes include activatable THG agents for biological imaging and "on-demand" delivery of various compounds under THG monitoring.
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Affiliation(s)
- Dmitry Nevozhay
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
- School of Biomedicine, Far Eastern Federal University, 8 Sukhanova Street, Vladivostok, 690950, Russia
- Equal contribution
| | - Michael Weiger
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
- Equal contribution
| | - Peter Friedl
- Department of Genitourinary Medical Oncology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
- Department of Cell Biology, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, Netherlands
- Cancer Genomics Centre, (CGC.nl), 3584 Utrecht, Netherlands
| | - Konstantin V. Sokolov
- Department of Imaging Physics, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
- Department of Bioengineering, Rice University, 6100 Main St, Houston, TX 77005, USA
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W Dean Keeton Street, Austin, TX 78712, USA
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30
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Gao X, Zou W, Jiang B, Xu D, Luo Y, Xiong J, Yan S, Wang Y, Tang Y, Chen C, Li H, Qiao H, Wang Q, Zou J. Experimental Study of Retention on the Combination of Bifidobacterium with High-Intensity Focused Ultrasound (HIFU) Synergistic Substance in Tumor Tissues. Sci Rep 2019; 9:6423. [PMID: 31015517 PMCID: PMC6478724 DOI: 10.1038/s41598-019-42832-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 04/09/2019] [Indexed: 01/04/2023] Open
Abstract
High intensity focused ultrasound (HIFU) has been recently regarded to be a new type of technique for non-invasive ablation of local tumors and HIFU synergists could significantly improve its therapeutic efficiency. The therapeutic efficiency of HIFU is greatly limited by the low retention of HIFU synergists in the target area and short residence time. This study aimed to explore a method to increase the deposition of HIFU synergists in tumors. Cationic lipid nanoparticle can be used to enhance the HIFU ablation effect, but there is still a problem for it that the deposition amount in the tumor tissue is small and the residence time is short. Bifidobacterium is highly biosafe and can be selectively colonized in the hypoxic zone of tumor tissue. Cationic lipid nanoparticles can be observed in vitro by attachment to bifidobacterium by electrostatic adsorption. And the effect of the proliferation of bifidobacterium in tumor tissues on the retention amount and retention time of cationic lipid nanoparticles in vivo was evaluated. Results showed that the cationic lipid nanoparticles were linked to the surface of Bifidobacterium effectively in vitro, while in vivo, the retention amount and retention time of cationic lipid nanoparticles could be increased by Bifidobacterium in tumor tissues, which provided a new method for improving the therapeutic efficiency of HIFU.
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Affiliation(s)
- Xuan Gao
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Wenjuan Zou
- Chongqing Traditional Chinese Medicine Hospital, Chongqing, 400021, China
| | - Binglei Jiang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Die Xu
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Yong Luo
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Jie Xiong
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Sijing Yan
- Chongqing Traditional Chinese Medicine Hospital, Chongqing, 400021, China
| | - Yaotai Wang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Yu Tang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Chun Chen
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Huanan Li
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Hai Qiao
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Qi Wang
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China
| | - Jianzhong Zou
- State Key Laboratory of Ultrasound Engineering in Medicine Co-Founded by Chongqing and the Ministry of Science and Technology, Chongqing Collaborative Innovation Center for Minimally-invasive and Noninvasive Medicine, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China.
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Zhang G, Harput S, Hu H, Christensen-Jeffries K, Zhu J, Brown J, Leow CH, Eckersley RJ, Dunsby C, Tang MX. Fast Acoustic Wave Sparsely Activated Localization Microscopy (fast-AWSALM): Ultrasound Super-Resolution using Plane-Wave Activation of Nanodroplets. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2019; 66:1039-1046. [PMID: 30908211 DOI: 10.1109/tuffc.2019.2906496] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Localization-based ultrasound super-resolution imaging using microbubble contrast agents and phase-change nano-droplets has been developed to visualize microvascular structures beyond the diffraction limit. However, the long data acquisition time makes the clinical translation more challenging. In this study, fast acoustic wave sparsely activated localization microscopy (fast-AWSALM) was developed to achieve super-resolved frames with sub-second temporal resolution, by using low-boiling-point octafluoropropane nanodroplets and high frame rate plane waves for activation, destruction, as well as imaging. Fast-AWSALM was demonstrated on an in vitro microvascular phantom to super-resolve structures that could not be resolved by conventional B-mode imaging. The effects of the temperature and mechanical index on fast-AWSALM was investigated. Experimental results show that sub-wavelength micro-structures as small as 190 lm were resolvable in 200 ms with plane-wave transmission at a center frequency of 3.5 MHz and a pulse repetition frequency of 5000 Hz. This is about a 3.5 fold reduction in point spread function full-width-half-maximum compared to that measured in conventional B-mode, and two orders of magnitude faster than the recently reported AWSALM under a non-flow/very slow flow situations and other localization based methods. Just as in AWSALM, fast-AWSALM does not require flow, as is required by current microbubble based ultrasound super resolution techniques. In conclusion, this study shows the promise of fast-AWSALM, a super-resolution ultrasound technique using nanodroplets, which can generate super-resolution images in milli-seconds and does not require flow.
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Aliabouzar M, Kumar KN, Sarkar K. Effects of droplet size and perfluorocarbon boiling point on the frequency dependence of acoustic vaporization threshold. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2019; 145:1105. [PMID: 30823782 PMCID: PMC7112712 DOI: 10.1121/1.5091781] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Phase shift liquid perfluorocarbon (PFC) droplets vaporizable by ultrasound into echogenic microbubble above a threshold pressure, termed acoustic droplet vaporization (ADV), are used for therapeutic and diagnostic applications. This study systematically investigated the effect of excitation frequency (2.25, 10, and 15 MHz) on the ADV and inertial cavitation (IC) thresholds of lipid-coated PFC droplets of three different liquid cores-perfluoropentane (PFP), perfluorohexane (PFH), and perfluorooctyl bromide (PFOB)-and of two different sizes-average diameters smaller than 3 μm and larger than 10 μm-in a tubeless setup. This study found that the ADV threshold increases with frequency for the lowest boiling point liquid, PFP, for both large and small size droplets. For higher boiling point liquids, PFH and PFOB, this study did not detect vaporization for small size droplets at the excitation levels (maximum 4 MPa peak negative) studied here. The large PFOB droplets experienced ADV only at the highest excitation frequency 15 MHz. For large PFH droplets, ADV threshold decreases with frequency that could possibly be due to the superharmonic focusing being a significant effect at larger sizes and the higher excitation pressures. ADV thresholds at all the frequencies studied here occurred at lower rarefactional pressures than IC thresholds indicating that phase transition precedes inertial cavitation.
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Affiliation(s)
- Mitra Aliabouzar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
| | - Krishna N Kumar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
| | - Kausik Sarkar
- Department of Mechanical and Aerospace Engineering, The George Washington University, Washington, DC 20052, USA
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He K, Ran H, Su Z, Wang Z, Li M, Hao L. Perfluorohexane-encapsulated fullerene nanospheres for dual-modality US/CT imaging and synergistic high-intensity focused ultrasound ablation. Int J Nanomedicine 2019; 14:519-529. [PMID: 30666111 PMCID: PMC6333388 DOI: 10.2147/ijn.s184579] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Purpose The objective of this study was to develop a multifunctional contrast agent for bioimaging and synergistic high-intensity focused ultrasound (HIFU) therapy to achieve theranostic. Materials and methods A novel type of perfluorohexane-encapsulated fullerene (PFH-C60) nanosphere was successfully developed via a vacuum ultrasonic emulsification and centrifugation method and subsequently used in ultrasound/computed tomography (CT) dual-modality and HIFU ablation of dissected bovine livers. In addition, transmission electron microscopic examination was employed to detect structural changes in the target tissue for HIFU ablation. Results The use of composite nanospheres effectively enhanced ultrasound and CT imaging. Moreover, the HIFU ablation of dissected bovine livers was also significantly enhanced. Conclusion Composite nanospheres demonstrate potential theranostic application as a multifunctional contrast agent for dual-modality biological imaging and highly efficient synergistic imaging-guided HIFU ablation.
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Affiliation(s)
- Kunyan He
- Ultrasound Department, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong Province 519000, People's Republic of China
| | - Haitao Ran
- Ultrasound Department, The second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, People's Republic of China.,The Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, People's Republic of China,
| | - Zhongzhen Su
- Ultrasound Department, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong Province 519000, People's Republic of China
| | - Zhigang Wang
- Ultrasound Department, The second Affiliated Hospital, Chongqing Medical University, Chongqing 400010, People's Republic of China.,The Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, People's Republic of China,
| | - Maoping Li
- Ultrasound Department, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400010, People's Republic of China
| | - Lan Hao
- The Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, People's Republic of China,
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Nguyen K, Pan HY, Haworth K, Mahoney E, Mercado-Shekhar KP, Lin CY, Zhang Z, C Park Y. Multiple-Exposure Drug Release from Stable Nanodroplets by High-Intensity Focused Ultrasound for a Potential Degenerative Disc Disease Treatment. ULTRASOUND IN MEDICINE & BIOLOGY 2019; 45:160-169. [PMID: 30482711 PMCID: PMC6290355 DOI: 10.1016/j.ultrasmedbio.2018.09.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 09/10/2018] [Accepted: 09/17/2018] [Indexed: 06/09/2023]
Abstract
The combination of simvastatin and CF680 dye encapsulated by stable nanodroplets has been developed as a drug delivery carrier. Simvastatin has previously been found to be a potential degenerative disc disease treatment. Multiple exposures of the nanodroplets to high-intensity focused ultrasound induced release of simvastatin. Each ultrasound exposure yielded a consistent concentration of the drug and dye released. B-mode ultrasound image analysis data and cavitation data clearly indicated the release mechanism is phase transition of the liquid nanodroplets into gas bubbles. The nanodroplets were stably stored in ex vivo rabbit spinal discs for at least 14 days, and the contents responded to ultrasound exposure on demand. Lastly, nucleus pulposus cells harvested from rabbit spine discs and exposed to media with nanodroplets exhibited a decrease in cell viability (85%) relative to the cells only (96.7%) at 24 h, but no difference at 48 h. Thus, the system may be a potential degenerative disc disease treatment.
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Affiliation(s)
- Khoi Nguyen
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio, USA
| | - Hsuan-Yeh Pan
- Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Kevin Haworth
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio, USA; Department of Internal Medicine, University of Cincinnati, Cincinnati, Ohio, USA
| | - Eric Mahoney
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio, USA
| | | | - Chia-Ying Lin
- Department of Orthopaedic Surgery, University of Cincinnati, Cincinnati, Ohio, USA
| | - Zhe Zhang
- Department of Chemical & Environmental Engineering, University of Cincinnati, Cincinnati, Ohio, USA
| | - Yoonjee C Park
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, Ohio, USA; Department of Chemical & Environmental Engineering, University of Cincinnati, Cincinnati, Ohio, USA.
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Fan CH, Lin YT, Ho YJ, Yeh CK. Spatial-Temporal Cellular Bioeffects from Acoustic Droplet Vaporization. Theranostics 2018; 8:5731-5743. [PMID: 30555577 PMCID: PMC6276289 DOI: 10.7150/thno.28782] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Accepted: 10/16/2018] [Indexed: 01/04/2023] Open
Abstract
One of the major challenges in developing acoustic droplet vaporization (ADV)-associated therapy as an effective and safe strategy is the precise determination of the spatial cellular bioeffects after ADV (cell death or cell membrane permeabilization). In this study, we combined high-speed camera imaging and live-cell microscopic imaging to observe the transient dynamics of droplets during ADV and to evaluate the mechanical force on cells. Methods: C6 glioma cells were co-incubated with DiI-labeled droplets (radius: 1.5, 2.25, and 3.0 μm). We used an acousto-optical system for high-speed bright-field (500 kfps) and fluorescence (40 kfps) microscopic imaging in order to visualize the dynamics of droplets under ultrasound excitation (frequency = 5 MHz, pressure = 5-8 MPa, cycle number = 3, pulse number = 1). Live-cell microscopic imaging was used to monitor the cell morphology, cell membrane permeabilization, and cell viability by membrane-anchored Lyn-yellow fluorescence protein, propidium Iodide staining, and calcein blue AM staining, respectively. Results: We discovered that the spatial distribution of ADV-induced bioeffects could be mapped to the physical dynamics of droplet vaporization. For droplets with a 1.5 μm radius, the distance threshold for ADV-induced cell death (5.5±1.9 μm) and reversible membrane permeabilization (11.3±3.5 μm) was well correlated with the distance of ADV-bubble pressing downward to the floor (5.7±1.3 μm) and maximum distance of droplet expansion (11.5±2.6 μm), respectively. These distances were enlarged by increasing the droplet sizes and insonation acoustic pressures. The live-cell imaging results show that ADV-bubbles can directly disrupt the cell membrane layer and induce intensive intracellular substance leakage. Further, the droplets shed the payload onto nearby cells during ADV, suggesting ADV could directly induce adjacent cell death by physical force and enhancement of chemotherapy to distant cells. Conclusion: This study provide new insights into the ADV-mediated physicochemical synergic effect for medical applications.
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Yu M, Xu X, Cai Y, Zou L, Shuai X. Perfluorohexane-cored nanodroplets for stimulations-responsive ultrasonography and O 2 -potentiated photodynamic therapy. Biomaterials 2018; 175:61-71. [DOI: 10.1016/j.biomaterials.2018.05.019] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/24/2018] [Accepted: 05/13/2018] [Indexed: 02/09/2023]
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Li M, Luo H, Zhang W, He K, Chen Y, Liu J, Chen J, Wang D, Hao L, Ran H, Zheng Y, Wang Z, Li P. Phase-shift, targeted nanoparticles for ultrasound molecular imaging by low intensity focused ultrasound irradiation. Int J Nanomedicine 2018; 13:3907-3920. [PMID: 30013344 PMCID: PMC6038875 DOI: 10.2147/ijn.s166200] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose Ultrasound (US) molecular imaging provides a non-invasive way to visualize tumor tissues at molecular and cell levels and could improve diagnosis. One problem of using US molecular imaging is microbubbles challenges, including instability, short circulation time, and poor loading capacity and penetrability. It is urgent to design new acoustic contrast agents and new imaging methods to facilitate tumor-targeted imaging. In this study, phase-shift poly lactic-co-glycolic acid (PLGA) nanoparticles modified with folate as an efficient US molecular probe were designed and the long–term targeted imaging was achieved by low-intensity focused US (LIFU) irradiation. Methods A new 5-step method and purification procedure was carried out to obtain uniform folic acid polyethylene glycol PLGA (PLGA-PEG-FA), the structure of which was confirmed by 1H nuclear magnetic resonance spectroscopy and thin-layer chromatography. Perflenapent (PFP) was wrapped in PLGA-PEG-FA by a double emulsion solvent evaporation method to obtain PFP/PLGA-PEG-FA nanoparticles. The targeted ability of the resulting nanoparticles was tested in vivo and in vitro. LIFU irradiation can irritate nanoparticle phase-shift to enhance tumor imaging both in vivo and in vitro. Results PLGA-PEG-FA was a light yellow powder with a final purity of at least 98%, the structure of which was confirmed by 1H nuclear magnetic resonance spectroscopy and thin-layer chromatography. Highly dispersed PFP/PLGA-PEG-FA nanoparticles with spherical morphology have an average diameter of 280.9±33.5 nm, PFP load efficiency of 59.4%±7.1%, and shells, thickness of 28±8.63 nm. The nanoparticles can specifically bind to cells expressing high folate receptor both in vivo and in vitro. Ultrasonic imaging was significantly enhanced in vitro and in vivo by LIFU irradiation. The retention time was significantly prolonged in vivo. Conclusion Phase-shift PFP/PLGA-PEG-FA nanoparticles induced by LIFU can significantly enhance ultrasonic imaging, specifically targeting tumors expressing folate receptor. As a potential targeting acoustic molecular probe, PFP/PLGA-PEG-FA nanoparticles can be used to achieve targeted localization imaging.
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Affiliation(s)
- Maoping Li
- Department of Ultrasound, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China.,Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
| | - Hua Luo
- Chongqing Protein way Biotechnology Co., Ltd., Chongqing 400039, China
| | - Weiyang Zhang
- Department of Ultrasound, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Kunyan He
- The Fifth Affiliated Hospital of Sun Yat-sen University, Guangzhou, 519000, China
| | - Yong Chen
- Chongqing Protein way Biotechnology Co., Ltd., Chongqing 400039, China
| | - Jianxin Liu
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
| | - Junchen Chen
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Changsha, 410008, China
| | - Dong Wang
- Department of Ultrasound, The First Affiliated Hospital, Chongqing Medical University, Chongqing 400016, China
| | - Lan Hao
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
| | - Haitao Ran
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
| | - Yuanyi Zheng
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
| | - Zhigang Wang
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
| | - Pan Li
- Institute of Ultrasound Imaging, Chongqing Medical University, Chongqing 400010, China, ;
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Zhao H, Wu M, Zhu L, Tian Y, Wu M, Li Y, Deng L, Jiang W, Shen W, Wang Z, Mei Z, Li P, Ran H, Zhou Z, Ren J. Cell-penetrating Peptide-modified Targeted Drug-loaded Phase-transformation Lipid Nanoparticles Combined with Low-intensity Focused Ultrasound for Precision Theranostics against Hepatocellular Carcinoma. Theranostics 2018; 8:1892-1910. [PMID: 29556363 PMCID: PMC5858507 DOI: 10.7150/thno.22386] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 01/09/2018] [Indexed: 12/15/2022] Open
Abstract
Objective: Prepare a multifunctional ultrasound molecular probe, hyaluronic acid-mediated cell-penetrating peptide-modified 10-hydroxycamptothecin-loaded phase-transformation lipid nanoparticles (HA/CPPs-10-HCPT-NPs), and to combine HA/CPPs-10-HCPT-NPs with low-intensity focused ultrasound (LIFU) for precision theranostics against hepatocellular carcinoma (HCC). Methods: HA/CPPs-10-HCPT-NPs were prepared using thin-film dispersion, ultrasound emulsification, and electrostatic effects. HA/CPPs-10-HCPT-NPs were characterized for particle size, zeta potential, encapsulation efficiency and drug-loading efficiency. In vitro, HA/CPPs-10-HCPT-NPs were tested for acoustic droplet vaporization (ADV) at different time points/acoustic intensities; the ability of HA/CPPs-10-HCPT-NPs to target SMMC-7721 cells was detected by confocal laser scanning microscopy (CLSM); the penetrating ability of CG-TAT-GC-modified NPs was verified by CLSM in a 3D multicellular tumor spheroid (MCTS) model; the effect of HA/CPPs-10-HCPT-NPs combined with LIFU on killing SMMC-7721 cells was measured by CCK-8 and flow cytometry. In vivo, the tumor-target efficiency of HA/CPPs-10-HCPT-NPs was evaluated by a small-animal fluorescence imaging system and CLSM; the enhanced ultrasound imaging efficiency of HA/CPPs-10-HCPT-NPs combined with LIFU was measured by an ultrasound imaging analyzer; the therapeutic effect of HA/CPPs-10-HCPT-NPs combined with LIFU was evaluated by tumor volume, tumor inhibition rate, and staining (hematoxylin and eosin (H & E), proliferating cell nuclear antigen (PCNA) and TUNEL). Results: Mean particle size and mean zeta potential of HA/CPPs-10-HCPT-NPs were 284.2±13.3 nm and - 16.55±1.50 mV, respectively. HA/CPPs-10-HCPT-NPs could bind to SMMC-7721 cells more readily than CPPs-10-HCPT-NPs. Penetration depth into 3D MCTS of HA/CPPs-10-HCPT-NPs was 2.76-fold larger than that of NPs without CG-TAT-GC. HA/CPPs-10-HCPT-NPs could enhance ultrasound imaging by undergoing ADV triggered by LIFU. HA/CPPs-10-HCPT-NPs+LIFU group demonstrated significantly higher efficiency of anti-proliferation and apoptosis percentage than all other groups. In mouse liver tumor xenografts, HA/CPPs-10-HCPT-NPs could target tumor sites and enhance ultrasound imaging under LIFU. HA/CPPs-10-HCPT-NPs+LIFU group had a significantly smaller tumor volume, lower proliferative index (PI), and higher tumor inhibition and apoptotic index (AI) than all other groups. Conclusions: Combined application of HA/CPPs-10-HCPT-NPs and LIFU should be a valuable and promising strategy for precise HCC theranostics.
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Zullino S, Argenziano M, Stura I, Guiot C, Cavalli R. From Micro- to Nano-Multifunctional Theranostic Platform: Effective Ultrasound Imaging Is Not Just a Matter of Scale. Mol Imaging 2018; 17:1536012118778216. [PMID: 30213222 PMCID: PMC6144578 DOI: 10.1177/1536012118778216] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 03/20/2018] [Accepted: 04/08/2018] [Indexed: 12/20/2022] Open
Abstract
Ultrasound Contrast Agents (UCAs) consisting of gas-filled-coated Microbubbles (MBs) with diameters between 1 and 10 µm have been used for a number of decades in diagnostic imaging. In recent years, submicron contrast agents have proven to be a viable alternative to MBs for ultrasound (US)-based applications for their capability to extravasate and accumulate in the tumor tissue via the enhanced permeability and retention effect. After a short overview of the more recent approaches to ultrasound-mediated imaging and therapeutics at the nanoscale, phase-change contrast agents (PCCAs), which can be phase-transitioned into highly echogenic MBs by means of US, are here presented. The phenomenon of acoustic droplet vaporization (ADV) to produce bubbles is widely investigated for both imaging and therapeutic applications to develop promising theranostic platforms.
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Affiliation(s)
- Sara Zullino
- Department of Neuroscience, University of Turin, Turin, Italy
| | - Monica Argenziano
- Department of Drug Science and Technology, University of Turin, Turin, Italy
| | - Ilaria Stura
- Department of Clinical and Biological Science, University of Turin, Turin, Italy
| | - Caterina Guiot
- Department of Neuroscience, University of Turin, Turin, Italy
| | - Roberta Cavalli
- Department of Drug Science and Technology, University of Turin, Turin, Italy
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Guo H, Wang Z, Du Q, Li P, Wang Z, Wang A. Stimulated phase-shift acoustic nanodroplets enhance vancomycin efficacy against methicillin-resistant Staphylococcus aureus biofilms. Int J Nanomedicine 2017; 12:4679-4690. [PMID: 28721044 PMCID: PMC5501628 DOI: 10.2147/ijn.s134525] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Purpose Bacterial biofilms on the surface of prostheses are becoming a rising concern in managing prosthetic joint infections. The inherent resistant features of biofilms render traditional antimicrobial therapy unproductive and revision surgery outcomes uncertain. This situation has prompted the exploration of novel antimicrobial strategies. The synergy of ultrasound microbubbles and vancomycin has been proposed as an efficient alternative for biofilm eradication. The purpose of this study was to evaluate the anti-biofilm effect of stimulated phase-shift acoustic nanodroplets (NDs) combined with vancomycin. Materials and methods We fabricated lipid phase-shift NDs with a core of liquid perfluoropentane. A new phase change mode for NDs incorporating an initial unfocused low-intensity pulsed ultrasound for 5 minutes and a subsequent incubation at 37°C into a 24-hour duration was developed. Methicillin-resistant Staphylococcus aureus (MRSA) biofilms were incubated with vancomycin and NDs under the hybrid stimulation. Biofilm morphology following treatment was determined using confocal laser scanning microscopy and scanning electron microscopy. Resazurin assay was used to quantify bactericidal efficacy against MRSA biofilm bacteria. Results NDs treated sequentially with ultrasound and heating at 37°C achieved gradual and substantial ND vaporization and cavitation in a successive process. NDs after stimulation were capable of generating stronger destruction on biofilm structure which was best characterized by residual circular arc margins and more dead bacteria. Furthermore, NDs combined with vancomycin contributed to significantly decreasing the metabolic activity of bacteria in MRSA biofilms (P<0.05). Conclusion Phase-shift acoustic NDs could exert a significant bactericidal effect against MRSA biofilms through a new stimulation mode. Acoustic NDs present advantages over microbubbles for biofilm damage. This anti-biofilm strategy could be used either alone or as an enhancer of traditional antibiotics in the control of prosthetic joint infections.
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Affiliation(s)
- Hao Guo
- Department of Orthopedics, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Ziming Wang
- Department of Orthopedics, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Quanyin Du
- Department of Orthopedics, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
| | - Pan Li
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Institute of Ultrasound Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Zhigang Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging, Institute of Ultrasound Imaging, Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Aimin Wang
- Department of Orthopedics, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Chongqing, China
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Ma YY, Jin KT, Wang SB, Wang HJ, Tong XM, Huang DS, Mou XZ. Molecular Imaging of Cancer with Nanoparticle-Based Theranostic Probes. CONTRAST MEDIA & MOLECULAR IMAGING 2017; 2017:1026270. [PMID: 29097909 PMCID: PMC5612740 DOI: 10.1155/2017/1026270] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 05/16/2017] [Indexed: 11/18/2022]
Abstract
Although advancements in medical technology supporting cancer diagnosis and treatment have improved survival, these technologies still have limitations. Recently, the application of noninvasive imaging for cancer diagnosis and therapy has become an indispensable component in clinical practice. However, current imaging contrasts and tracers, which are in widespread clinical use, have their intrinsic limitations and disadvantages. Nanotechnologies, which have improved in vivo detection and enhanced targeting efficiency for cancer, may overcome some of the limitations of cancer diagnosis and therapy. Theranostic nanoparticles have great potential as a therapeutic model, which possesses the ability of their nanoplatforms to load targeted molecule for both imaging and therapeutic functions. The resulting nanosystem will likely be critical with the growth of personalized medicine because of their diagnostic potential, effectiveness as a drug delivery vehicle, and ability to oversee patient response to therapy. In this review, we discuss the achievements of modern nanoparticles with the goal of accurate tumor imaging and effective treatment and discuss the future prospects.
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Affiliation(s)
- Ying-Yu Ma
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang Province, Hangzhou 310014, China
| | - Ke-Tao Jin
- Department of Gastrointestinal Surgery, Shaoxing People's Hospital, Shaoxing Hospital of Zhejiang University, Shaoxing 312000, China
| | - Shi-Bing Wang
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang Province, Hangzhou 310014, China
| | - Hui-Ju Wang
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang Province, Hangzhou 310014, China
| | - Xiang-Min Tong
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang Province, Hangzhou 310014, China
| | - Dong-Sheng Huang
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang Province, Hangzhou 310014, China
| | - Xiao-Zhou Mou
- Clinical Research Institute, Zhejiang Provincial People's Hospital, Hangzhou 310014, China
- Key Laboratory of Cancer Molecular Diagnosis and Individualized Therapy of Zhejiang Province, Hangzhou 310014, China
- School of Basic Medical Sciences, Hangzhou Medical College, Hangzhou 310053, China
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Baghbani F, Chegeni M, Moztarzadeh F, Hadian-Ghazvini S, Raz M. Novel ultrasound-responsive chitosan/perfluorohexane nanodroplets for image-guided smart delivery of an anticancer agent: Curcumin. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 74:186-193. [DOI: 10.1016/j.msec.2016.11.107] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2016] [Revised: 10/24/2016] [Accepted: 11/23/2016] [Indexed: 10/20/2022]
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Baghbani F, Moztarzadeh F. Bypassing multidrug resistant ovarian cancer using ultrasound responsive doxorubicin/curcumin co-deliver alginate nanodroplets. Colloids Surf B Biointerfaces 2017; 153:132-140. [DOI: 10.1016/j.colsurfb.2017.01.051] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 01/26/2017] [Accepted: 01/31/2017] [Indexed: 10/20/2022]
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Liu J, Shang T, Wang F, Cao Y, Hao L, Ren J, Ran H, Wang Z, Li P, Du Z. Low-intensity focused ultrasound (LIFU)-induced acoustic droplet vaporization in phase-transition perfluoropentane nanodroplets modified by folate for ultrasound molecular imaging. Int J Nanomedicine 2017; 12:911-923. [PMID: 28184161 PMCID: PMC5291457 DOI: 10.2147/ijn.s122667] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The commonly used ultrasound (US) molecular probes, such as targeted microbubbles and perfluorocarbon emulsions, present a number of inherent problems including the conflict between US visualization and particle penetration. This study describes the successful fabrication of phase changeable folate-targeted perfluoropentane nanodroplets (termed FA-NDs), a novel US molecular probe for tumor molecular imaging with US. Notably, these FA-NDs can be triggered by low-intensity focused US (LIFU) sonication, providing excellent US enhancement in B-mode and contrast-enhanced US mode in vitro. After intravenous administration into nude mice bearing SKOV3 ovarian carcinomas, 1,1′-dioctadecyl-3,3,3′,3′ -tetramethylindotricarbocya-nine iodide-labeled FA-NDs were found to accumulate in the tumor region. FA-NDs injection followed by LIFU sonication exhibited remarkable US contrast enhancement in the tumor region. In conclusion, combining our elaborately developed FA-NDs with LIFU sonication provides a potential protocol for US molecular imaging in folate receptor-overexpressing tumors.
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Affiliation(s)
- Jianxin Liu
- Chongqing Key Laboratory of Ultrasound Molecular Imaging
| | - Tingting Shang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging
| | - Fengjuan Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging
| | - Yang Cao
- Chongqing Key Laboratory of Ultrasound Molecular Imaging
| | - Lan Hao
- Chongqing Key Laboratory of Ultrasound Molecular Imaging
| | - JianLi Ren
- Chongqing Key Laboratory of Ultrasound Molecular Imaging; Department of Ultrasound
| | - Haitao Ran
- Chongqing Key Laboratory of Ultrasound Molecular Imaging; Department of Ultrasound
| | - Zhigang Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging; Department of Ultrasound
| | - Pan Li
- Chongqing Key Laboratory of Ultrasound Molecular Imaging; Department of Ultrasound
| | - Zhiyu Du
- Postgraduate Department, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, People's Republic of China
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Novel alginate-stabilized doxorubicin-loaded nanodroplets for ultrasounic theranosis of breast cancer. Int J Biol Macromol 2016; 93:512-519. [DOI: 10.1016/j.ijbiomac.2016.09.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 09/01/2016] [Accepted: 09/02/2016] [Indexed: 01/03/2023]
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46
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Lin WW, Hsieh YC, Cheng YA, Chuang KH, Huang CC, Chuang CH, Chen IJ, Cheng KW, Lu YC, Cheng TC, Wang YT, Roffler SR, Cheng TL. Optimization of an Anti-poly(ethylene glycol) (anti-PEG) Cell-Based Capture System To Quantify PEG and PEGylated Molecules. Anal Chem 2016; 88:12371-12379. [DOI: 10.1021/acs.analchem.6b03614] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Wen-Wei Lin
- Institute
of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | | | | | - Kuo-Hsiang Chuang
- Graduate
Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan
| | | | | | | | - Kai-Wen Cheng
- Institute
of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | | | | | | | - Steve R. Roffler
- Institute
of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Tian-Lu Cheng
- Institute
of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
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Howard CB, Fletcher N, Houston ZH, Fuchs AV, Boase NRB, Simpson JD, Raftery LJ, Ruder T, Jones ML, de Bakker CJ, Mahler SM, Thurecht KJ. Overcoming Instability of Antibody-Nanomaterial Conjugates: Next Generation Targeted Nanomedicines Using Bispecific Antibodies. Adv Healthc Mater 2016; 5:2055-68. [PMID: 27283923 DOI: 10.1002/adhm.201600263] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 04/20/2016] [Indexed: 12/20/2022]
Abstract
Targeted nanomaterials promise improved therapeutic efficacy, however their application in nanomedicine is limited due to complexities associated with protein conjugations to synthetic nanocarriers. A facile method to generate actively targeted nanomaterials is developed and exemplified using polyethylene glycol (PEG)-functional nanostructures coupled to a bispecific antibody (BsAb) with dual specificity for methoxy PEG (mPEG) epitopes and cancer targets such as epidermal growth factor receptor (EGFR). The EGFR-mPEG BsAb binds with high affinity to recombinant EGFR (KD : 1 × 10(-9) m) and hyperbranched polymer (HBP) consisting of mPEG (KD : 10 × 10(-9) m) and demonstrates higher avidity for HBP compared to linear mPEG. The binding of BsAb-HBP bioconjugate to EGFR on MDA-MB-468 cancer cells is investigated in vitro using a fluorescently labeled polymer, and in in vivo xenograft models by small animal optical imaging. The antibody-targeted nanostructures show improved accumulation in tumor cells compared to non-targeted nanomaterials. This demonstrates a facile approach for tuning targeting ligand density on nanomaterials, by modulating surface functionality. Antibody fragments are tethered to the nanomaterial through simple mixing prior to administration to animals, overcoming the extensive procedures encountered for developing targeted nanomedicines.
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Affiliation(s)
- Christopher B. Howard
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Nicholas Fletcher
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Zachary H. Houston
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Adrian V. Fuchs
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Nathan R. B. Boase
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Joshua D. Simpson
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Lyndon J. Raftery
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Tim Ruder
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Martina L. Jones
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Christopher J. de Bakker
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Stephen M. Mahler
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
| | - Kristofer J. Thurecht
- Australian Institute for Bioengineering and Nanotechnology (AIBN) Centre for Advanced Imaging (CAI) School of Chemical Engineering ARC Centre of Excellence in Convergent BioNano Science and Technology The University of Queensland Brisbane QLD 4072 Australia
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Abstract
In recent decades ultrasound-guided delivery of drugs loaded on nanocarriers has been the focus of increasing attention to improve therapeutic treatments. Ultrasound has often been used in combination with microbubbles, micron-sized spherical gas-filled structures stabilized by a shell, to amplify the biophysical effects of the ultrasonic field. Nanometer size bubbles are defined nanobubbles. They were designed to obtain more efficient drug delivery systems. Indeed, their small sizes allow extravasation from blood vessels into surrounding tissues and ultrasound-targeted site-specific release with minimal invasiveness. Additionally, nanobubbles might be endowed with improved stability and longer residence time in systemic circulation. This review will describe the physico-chemical properties of nanobubbles, the formulation parameters and the drug loading approaches, besides potential applications as a therapeutic tool.
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Drug-Loaded Perfluorocarbon Nanodroplets for Ultrasound-Mediated Drug Delivery. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 880:221-41. [DOI: 10.1007/978-3-319-22536-4_13] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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50
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Zhou Y. Application of acoustic droplet vaporization in ultrasound therapy. J Ther Ultrasound 2015; 3:20. [PMID: 26566442 PMCID: PMC4642755 DOI: 10.1186/s40349-015-0041-8] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2015] [Accepted: 11/02/2015] [Indexed: 12/20/2022] Open
Abstract
Microbubbles have been used widely both in the ultrasonic diagnosis to enhance the contrast of vasculature and in ultrasound therapy to increase the bioeffects induced by bubble cavitation. However, due to their large size, the lifetime of microbubbles in the circulation system is on the order of minutes, and they cannot penetrate through the endothelial gap to enter the tumor. In an acoustic field, liquefied gas nanoparticles may be able to change the state and become the gas form in a few cycles of exposure without significant heating effects. Such a phenomenon is called as acoustic droplet vaporization (ADV). This review is intended to introduce the emerging application of ADV. The physics and the theoretical model behind it are introduced for further understanding of the mechanisms. Current manufacturing approaches are provided, and their differences are compared. Based on the characteristic of phase shift, a variety of therapeutic applications have been carried out both in vitro and in vivo. The latest progress and interesting results of vessel occlusion, thermal ablation using high-intensity focused ultrasound (HIFU), localized drug delivery to the tumor and cerebral tissue through the blood-brain barrier, localized tissue erosion by histotripsy are summarized. ADV may be able to overcome some limitations of microbubble-mediated ultrasound therapy and provide a novel drug and molecular targeting carrier. More investigation will help progress this technology forward for clinical translation.
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Affiliation(s)
- Yufeng Zhou
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798 Singapore
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