1
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Transcutaneous ultrasound mediated gene delivery into canine livers achieves therapeutic levels of FVIII expression. Blood Adv 2022; 6:3557-3568. [PMID: 35427415 PMCID: PMC9631573 DOI: 10.1182/bloodadvances.2021006016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Accepted: 04/03/2022] [Indexed: 11/24/2022] Open
Abstract
Nonviral UMGD can achieve therapeutic levels of FVIII gene expression in a large animal model. UMGD targeting liver is safe without evidence of any lasting damage.
A safe, effective, and inclusive gene therapy will significantly benefit a large population of patients with hemophilia. We used a minimally invasive transcutaneous ultrasound-mediated gene delivery (UMGD) strategy combined with microbubbles (MBs) to enhance gene transfer into 4 canine livers. A mixture of high-expressing, liver-specific human factor VIII (hFVIII) plasmid and MBs was injected into the hepatic vein via balloon catheter under fluoroscopy guidance with simultaneous transcutaneous UMGD treatment targeting a specific liver lobe. Therapeutic levels of hFVIII expression were achieved in all 4 dogs, and hFVIII levels were maintained at a detectable level in 3 dogs throughout the 60-day experimental period. Plasmid copy numbers correlated with hFVIII antigen levels, and plasmid-derived messenger RNA (mRNA) was detected in treated livers. Liver transaminase levels and histology analysis indicated minimal liver damage and a rapid recovery after treatment. These results indicate that liver-targeted transcutaneous UMGD is promising as a clinically feasible therapy for hemophilia A and other diseases.
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2
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Ultrasound-mediated gene delivery of factor VIII plasmids for hemophilia A gene therapy in mice. MOLECULAR THERAPY - NUCLEIC ACIDS 2022; 27:916-926. [PMID: 35141050 PMCID: PMC8803955 DOI: 10.1016/j.omtn.2022.01.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 01/07/2022] [Indexed: 02/04/2023]
Abstract
Gene therapy offers great promises for a cure of hemophilia A resulting from factor VIII (FVIII) gene deficiency. We have developed and optimized a non-viral ultrasound-mediated gene delivery (UMGD) strategy. UMGD of reporter plasmids targeting mice livers achieved high levels of transgene expression predominantly in hepatocytes. Following UMGD of a plasmid encoding human FVIII driven by a hepatocyte-specific promoter/enhancer (pHP-hF8/N6) into the livers of hemophilia A mice, a partial phenotypic correction was achieved in treated mice. In order to achieve persistent and therapeutic FVIII gene expression, we adopted a plasmid (pHP-hF8-X10) encoding an FVIII variant with significantly increased FVIII secretion. By employing an optimized pulse-train ultrasound condition and immunomodulation, the treated hemophilia A mice achieved 25%–150% of FVIII gene expression on days 1–7 with very mild transient liver damage, as indicated by a small increase of transaminase levels that returned to normal within 3 days. Therapeutic levels of FVIII can be maintained persistently without the generation of inhibitors in mice. These results indicate that UMGD can significantly enhance the efficiency of plasmid DNA transfer into the liver. They also demonstrate the potential of this novel technology to safely and effectively treat hemophilia A.
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3
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Walsh AP, Gordon HN, Peter K, Wang X. Ultrasonic particles: An approach for targeted gene delivery. Adv Drug Deliv Rev 2021; 179:113998. [PMID: 34662671 PMCID: PMC8518240 DOI: 10.1016/j.addr.2021.113998] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 09/24/2021] [Accepted: 10/05/2021] [Indexed: 02/07/2023]
Abstract
Gene therapy has been widely investigated for the treatment of genetic, acquired, and infectious diseases. Pioneering work utilized viral vectors; however, these are suspected of causing serious adverse events, resulting in the termination of several clinical trials. Non-viral vectors, such as lipid nanoparticles, have attracted significant interest, mainly due to their successful use in vaccines in the current COVID-19 pandemic. Although they allow safe delivery, they come with the disadvantage of off-target delivery. The application of ultrasound to ultrasound-sensitive particles allows for a direct, site-specific transfer of genetic materials into the organ/site of interest. This process, termed ultrasound-targeted gene delivery (UTGD), also increases cell membrane permeability and enhances gene uptake. This review focuses on the advances in ultrasound and the development of ultrasonic particles for UTGD across a range of diseases. Furthermore, we discuss the limitations and future perspectives of UTGD.
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Affiliation(s)
- Aidan P.G. Walsh
- Molecular Imaging and Theranostics Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Department of Medicine, Monash University, Melbourne, VIC, Australia
| | - Henry N. Gordon
- Molecular Imaging and Theranostics Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Department of Biochemistry and Pharmacology, University of Melbourne, VIC, Australia
| | - Karlheinz Peter
- Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Department of Medicine, Monash University, Melbourne, VIC, Australia,Department of Cardiometabolic Health, University of Melbourne, VIC, Australia,La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, Australia
| | - Xiaowei Wang
- Molecular Imaging and Theranostics Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Atherothrombosis and Vascular Biology Laboratory, Baker Heart and Diabetes Institute, Melbourne, VIC, Australia,Department of Medicine, Monash University, Melbourne, VIC, Australia,Department of Cardiometabolic Health, University of Melbourne, VIC, Australia,La Trobe Institute for Molecular Science, La Trobe University, Melbourne, VIC, Australia,Corresponding author at: Baker Heart and Diabetes Institute, 75 Commercial Road, Melbourne, VIC 3004, Australia
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4
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Kumar SU, Telichko AV, Wang H, Hyun D, Johnson EG, Kent MS, Rebhun RB, Dahl JJ, Culp WTN, Paulmurugan R. Acoustically Driven Microbubbles Enable Targeted Delivery of microRNA-Loaded Nanoparticles to Spontaneous Hepatocellular Neoplasia in Canines. ADVANCED THERAPEUTICS 2020; 3:2000120. [PMID: 33415184 PMCID: PMC7784952 DOI: 10.1002/adtp.202000120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Indexed: 01/16/2023]
Abstract
Spatially localized microbubble cavitation by ultrasound offers an effective means of altering permeability of natural barriers (i.e. blood vessel and cell membrane) in favor of nanomaterials accumulation in the target site. In this study, a clinically relevant, minimally invasive ultrasound guided therapeutic approach is investigated for targeted delivery of anticancer microRNA loaded PLGA-b-PEG nanoparticles to spontaneous hepatocellular neoplasia in a canine model. Quantitative assessment of the delivered microRNAs revealed prominent and consistent increase in miRNAs levels (1.5-to 2.3-fold increase (p<0.001)) in ultrasound treated tumor regions compared to untreated control regions. Immunohistology of ultrasound treated tumor tissue presented a clear evidence for higher amount of nanoparticles extravasation from the blood vessels. A distinct pattern of cytokine expression supporting CD8+ T cells mediated "cold-to-hot" tumor transition was evident in all patients. On the outset, proposed platform can enhance delivery of miRNA-loaded nanoparticles to deep seated tumors in large animals to enhance chemotherapy.
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Affiliation(s)
- Sukumar Uday Kumar
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Arsenii V Telichko
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Huaijun Wang
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Dongwoon Hyun
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - Eric G Johnson
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Michael S Kent
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Robert B Rebhun
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Jeremy J Dahl
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
| | - William T N Culp
- Department of Surgical and Radiological Sciences, School of Veterinary Medicine, University of California, Davis, California
| | - Ramasamy Paulmurugan
- Molecular Imaging Program at Stanford (MIPS), Stanford University, Stanford, California; Department of Radiology, Stanford University, Stanford, California
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5
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Chowdhury SM, Abou-Elkacem L, Lee T, Dahl J, Lutz AM. Ultrasound and microbubble mediated therapeutic delivery: Underlying mechanisms and future outlook. J Control Release 2020; 326:75-90. [PMID: 32554041 DOI: 10.1016/j.jconrel.2020.06.008] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 06/06/2020] [Accepted: 06/09/2020] [Indexed: 12/20/2022]
Abstract
Beyond the emerging field of oncological ultrasound molecular imaging, the recent significant advancements in ultrasound and contrast agent technology have paved the way for therapeutic ultrasound mediated microbubble oscillation and has shown that this approach is capable of increasing the permeability of microvessel walls while also initiating enhanced extravasation and drug delivery into target tissues. In addition, a large number of preclinical studies have demonstrated that ultrasound alone or combined with microbubbles can efficiently increase cell membrane permeability resulting in enhanced tissue distribution and intracellular drug delivery of molecules, nanoparticles, and other therapeutic agents. The mechanism behind the enhanced permeability is the temporary creation of pores in cell membranes through a phenomenon called sonoporation by high-intensity ultrasound and microbubbles or cavitation agents. At low ultrasound intensities (0.3-3 W/cm2), sonoporation may be caused by microbubbles oscillating in a stable motion, also known as stable cavitation. In contrast, at higher ultrasound intensities (greater than 3 W/cm2), sonoporation usually occurs through inertial cavitation that accompanies explosive growth and collapse of the microbubbles. Sonoporation has been shown to be a highly effective method to improve drug uptake through microbubble potentiated enhancement of microvascular permeability. In this review, the therapeutic strategy of using ultrasound for improved drug delivery are summarized with the special focus on cancer therapy. Additionally, we discuss the progress, challenges, and future of ultrasound-mediated drug delivery towards clinical translation.
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Affiliation(s)
- Sayan Mullick Chowdhury
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Lotfi Abou-Elkacem
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Taehwa Lee
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Jeremy Dahl
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA
| | - Amelie M Lutz
- Department of Radiology, Molecular Imaging Program at Stanford, Stanford University School of Medicine, Stanford, CA, USA.
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6
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Tran DM, Zhang F, Morrison KP, Loeb KR, Harrang J, Kajimoto M, Chavez F, Wu L, Miao CH. Transcutaneous Ultrasound-Mediated Nonviral Gene Delivery to the Liver in a Porcine Model. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2019; 14:275-284. [PMID: 31497618 PMCID: PMC6718807 DOI: 10.1016/j.omtm.2019.07.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Accepted: 07/14/2019] [Indexed: 11/12/2022]
Abstract
Ultrasound (US)-mediated gene delivery (UMGD) of nonviral vectors was demonstrated in this study to be an effective method to transfer genes into the livers of large animals via a minimally invasive approach. We developed a transhepatic venous nonviral gene delivery protocol in combination with transcutaneous, therapeutic US (tUS) to facilitate significant gene transfer in pig livers. A balloon catheter was inserted into the pig hepatic veins of the target liver lobes via jugular vein access under fluoroscopic guidance. tUS exposure was continuously applied to the lobe with simultaneous infusion of pGL4 plasmid (encoding a luciferase reporter gene) and microbubbles. tUS was delivered via an unfocused, two-element disc transducer (H105) or a novel focused, single-element transducer (H114). We found applying transcutaneous US using H114 and H105 with longer pulses and reduced acoustic pressures resulted in an over 100-fold increase in luciferase activity relative to untreated lobes. We also showed effective UMGD by achieving focal regions of >105 relative light units (RLUs)/mg protein with minimal tissue damage, demonstrating the feasibility for clinical translation of this technique to treat patients with genetic diseases.
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Affiliation(s)
- Dominic M Tran
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Feng Zhang
- Department of Radiology, University of Washington, Seattle, WA 98195, USA
| | | | - Keith R Loeb
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | - James Harrang
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Masaki Kajimoto
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | | | - Li Wu
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Carol H Miao
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA.,Department of Pediatrics, University of Washington, Seattle, WA 98195, USA
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7
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Fu JW, Lin YS, Gan SL, Li YR, Wang Y, Feng ST, Li H, Zhou GF. Multifunctionalized Microscale Ultrasound Contrast Agents for Precise Theranostics of Malignant Tumors. CONTRAST MEDIA & MOLECULAR IMAGING 2019; 2019:3145647. [PMID: 31360144 PMCID: PMC6642784 DOI: 10.1155/2019/3145647] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 04/26/2019] [Accepted: 06/10/2019] [Indexed: 11/17/2022]
Abstract
In ultrasonography, ultrasound contrast agents (UCAs) that possess high acoustic impedance mismatch with the bulk medium are frequently employed to highlight the borders between tissues by enhanced ultrasound scattering in a clinic. Typically, the most common UCA, microbubble, is generally close in size to a red blood cell (<∼10 μm). These microscale UCAs cannot be directly entrapped into the target cells but generate several orders of magnitude stronger echo signals than the nanoscale ones. And their large containment and high ultrasound responsiveness also greatly facilitate to perform combined treatments, e.g., drug delivery and other imaging techniques. So multifunctionalized microscale UCAs appear on this scene and keep growing toward a promising direction for precise theranostics. In this review, we systematically summarize the new advances in the principles and preparations of multifunctionalized microscale UCAs and their medical applications for malignant tumors.
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Affiliation(s)
- Jia-Wei Fu
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yi-Sheng Lin
- Department of Radiology, The First Affiliated Hospital, Guangzhou University of Traditional Chinese Medicine, Guangzhou, Guangdong 510405, China
| | - Sheng-Long Gan
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yong-Rui Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Yao Wang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Shi-Ting Feng
- Department of Radiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou 510080, China
| | - Hao Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
| | - Guo-Fu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China
- National Center for International Research on Green Optoelectronics, South China Normal University, Guangzhou 510006, China
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8
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Applications of Ultrasound to Stimulate Therapeutic Revascularization. Int J Mol Sci 2019; 20:ijms20123081. [PMID: 31238531 PMCID: PMC6627741 DOI: 10.3390/ijms20123081] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 06/20/2019] [Accepted: 06/21/2019] [Indexed: 12/13/2022] Open
Abstract
Many pathological conditions are characterized or caused by the presence of an insufficient or aberrant local vasculature. Thus, therapeutic approaches aimed at modulating the caliber and/or density of the vasculature by controlling angiogenesis and arteriogenesis have been under development for many years. As our understanding of the underlying cellular and molecular mechanisms of these vascular growth processes continues to grow, so too do the available targets for therapeutic intervention. Nonetheless, the tools needed to implement such therapies have often had inherent weaknesses (i.e., invasiveness, expense, poor targeting, and control) that preclude successful outcomes. Approximately 20 years ago, the potential for using ultrasound as a new tool for therapeutically manipulating angiogenesis and arteriogenesis began to emerge. Indeed, the ability of ultrasound, especially when used in combination with contrast agent microbubbles, to mechanically manipulate the microvasculature has opened several doors for exploration. In turn, multiple studies on the influence of ultrasound-mediated bioeffects on vascular growth and the use of ultrasound for the targeted stimulation of blood vessel growth via drug and gene delivery have been performed and published over the years. In this review article, we first discuss the basic principles of therapeutic ultrasound for stimulating angiogenesis and arteriogenesis. We then follow this with a comprehensive cataloging of studies that have used ultrasound for stimulating revascularization to date. Finally, we offer a brief perspective on the future of such approaches, in the context of both further research development and possible clinical translation.
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9
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Huang S, Ren Y, Wang X, Lazar L, Ma S, Weng G, Zhao J. Application of Ultrasound-Targeted Microbubble Destruction-Mediated Exogenous Gene Transfer in Treating Various Renal Diseases. Hum Gene Ther 2018; 30:127-138. [PMID: 30205715 DOI: 10.1089/hum.2018.070] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Chronic renal disease or acute renal injury could result in end-stage renal disease or renal failure. Sonoporation, induced by ultrasound-targeted microbubble destruction (UTMD), has evolved as a new technology for gene delivery. It increases the transfection efficiency of the genes into target kidney tissues. Moreover, UTMD-mediated gene delivery can directly repair the damaged tissues or improve the recruitment and homing of stem cells in the recovery of injured tissues, which has the potential to act as a non-viral and effective method to current gene therapy. This article reviews the mechanisms and applications of UTMD in terms of renal disease, including diabetic nephropathy, renal carcinoma, acute kidney injury, renal interstitial fibrosis, nephrotoxic nephritis, urinary stones, and acute rejection.
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Affiliation(s)
- Shuaishuai Huang
- 1 Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, P.R. China
| | - Yu Ren
- 1 Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, P.R. China
| | - Xue Wang
- 1 Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, P.R. China
| | - Lissy Lazar
- 2 Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, Ningbo, P.R. China
| | - Suya Ma
- 1 Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, P.R. China
| | - Guobin Weng
- 1 Urology and Nephrology Institute of Ningbo University, Ningbo Urology and Nephrology Hospital, Ningbo, P.R. China
| | - Jinshun Zhao
- 2 Department of Preventative Medicine, Zhejiang Provincial Key Laboratory of Pathological and Physiological Technology, Medicine School of Ningbo University, Ningbo, P.R. China
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10
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Shape Oscillation of a Single Microbubble in an Ultrasound Field. JOURNAL OF NANOTECHNOLOGY 2018. [DOI: 10.1155/2018/3701047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The shape oscillation of a single two-dimensional nitrogen microbubble in an ultrasound field is numerically investigated. The Navier–Stokes equations are solved by using the finite-volume method combined with the volume-of-fluid model. The numerical results are in good accordance with experimental and theoretical results reported. According to the analyses of the shape oscillation process, the bubble deformation period is twice the driving acoustic pressure period and the shape oscillation is mainly caused by the change of interface velocity. The vortexes produced due to velocity variations lead to the deformation of the bubble interface.
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11
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Noble-Vranish ML, Song S, Morrison KP, Tran DM, Sun RR, Loeb KR, Keilman GW, Miao CH. Ultrasound-Mediated Gene Therapy in Swine Livers Using Single-Element, Multi-lensed, High-Intensity Ultrasound Transducers. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2018; 10:179-188. [PMID: 30105275 PMCID: PMC6077835 DOI: 10.1016/j.omtm.2018.06.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 06/26/2018] [Indexed: 01/21/2023]
Abstract
We have achieved significant enhancement of gene delivery into livers of large animals using ultrasound (US)-targeted microbubble (MB) destruction methods. An infusion of pGL4 (encoding a luciferase reporter gene) plasmid DNA (pDNA) and MBs into a portal-vein segmental branch of a porcine liver was exposed to US for 4 min. Therapeutic US induced cavitation of MBs to temporarily permeabilize the vascular endothelium and cell membranes, allowing entry of pDNA. We obtained a 64-fold enhancement in luciferase expression in pig livers compared to control without US using an unfocused, dual-element transducer (H105, center frequency [fc] = 1.10 MHz) at 2.7 MPa peak negative pressure (PNP). However, input electrical energy was limited, and modified transducers were designed to have spherical (H185A, fc = 1.10 MHz) or cylindrical foci (H185B, fc = 1.10 MHz; H185D, fc = 1.05 MHz) to enhance PNP output. The revised transducers required less electrical input to achieve 2.7 MPa PNP compared to H105, thereby allowing PNP outputs of up to 6.2 MPa without surpassing the piezo-material limitations. Subsequently, luciferase expression significantly improved up to 9,000-fold compared to controls with minor liver damage. These advancements will allow us to modify our current protocols toward minimally invasive US gene therapy.
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Affiliation(s)
- Misty L Noble-Vranish
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Shuxian Song
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | | | - Dominic M Tran
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Ryan R Sun
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Keith R Loeb
- Fred Hutchinson Cancer Research Center, Seattle, WA 98109, USA
| | | | - Carol H Miao
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA.,Department of Pediatrics, University of Washington, Seattle, WA 98105, USA
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12
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Shen J, Zhuo N, Xu S, Song Z, Hu Z, Hao J, Guo X. Resveratrol delivery by ultrasound-mediated nanobubbles targeting nucleus pulposus cells. Nanomedicine (Lond) 2018; 13:1433-1446. [PMID: 29658365 DOI: 10.2217/nnm-2018-0019] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To improve nucleus pulposus cell-targeted therapy for intervertebral disc degeneration (IDD) by fabricating a novel kind of ultrasound (US)-mediated poly(lactic-co-glycolic acid) nanobubbles (NBs) as a means of targeted drug delivery. Materials & methods: The resveratrol (RES)-embedded NBs were synthesized using a double-emulsion method. The active NP cell-targeting biomarker CDH2 antibody (AbCDH2) was further conjugated to the NBs using a carbodiimide method. Then, this RES/AbCDH2 NBs were examined by physical properties, specifc cell-targeting ability, anticatabolism effect in vitro and in vivo. Results: RES/AbCDH2 NBs exhibited high RES-loading efficiency, and US triggered accelerated RES release. Furthermore, RES/AbCDH2 NB treatment exhibited excellent anticatabolic ability in vitro; and in an IDD rabbit model, US-mediated RES/AbCDH2 NB injection effectively retarded the degenerative process of the intervertebral disc in vivo. Conclusion: The combination of US irradiation and drug delivery through RES/AbCDH2 NBs can be considered as a novel treatment option for IDD.
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Affiliation(s)
- Jieliang Shen
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Naiqiang Zhuo
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Shenxi Xu
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Zhaojun Song
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Zhenming Hu
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Jie Hao
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Xiuming Guo
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
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13
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Tran DM, Harrang J, Song S, Chen J, Smith BM, Miao CH. Prolonging pulse duration in ultrasound-mediated gene delivery lowers acoustic pressure threshold for efficient gene transfer to cells and small animals. J Control Release 2018; 279:345-354. [PMID: 29702143 DOI: 10.1016/j.jconrel.2018.04.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 03/08/2018] [Accepted: 04/06/2018] [Indexed: 12/20/2022]
Abstract
While ultrasound-mediated gene delivery (UMGD) has been accomplished using high peak negative pressures (PNPs) of 2 MPa or above, emerging research showed that this may not be a requirement for microbubble (MB) cavitation. Thus, we investigated lower-pressure conditions close to the MB inertial cavitation threshold and focused towards further increasing gene transfer efficiency and reducing associated cell damage. We created a matrix of 21 conditions (n = 3/cond.) to test in HEK293T cells using pulse durations spanning 18 μs-36 ms and PNPs spanning 0.5-2.5 MPa. Longer pulse duration conditions yielded significant increase in transgene expression relative to sham with local maxima between 20 J and 100 J energy curves. A similar set of 17 conditions (n = 4/cond.) was tested in mice using pulse durations spanning 18 μs-22 ms and PNPs spanning 0.5-2.5 MPa. We observed local maxima located between 1 J and 10 J energy curves in treated mice. Of these, several low pressure conditions showed a decrease in ALT and AST levels while maintaining better or comparable expression to our positive control, indicating a clear benefit to allow for effective transfection with minimized tissue damage versus the high-intensity control. Our data indicates that it is possible to eliminate the requirement of high PNPs by prolonging pulse durations for effective UMGD in vitro and in vivo, circumventing the peak power density limitations imposed by piezo-materials used in US transducers. Overall, these results demonstrate the advancement of UMGD technology for achieving efficient gene transfer and potential scalability to larger animal models and human application.
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Affiliation(s)
- Dominic M Tran
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - James Harrang
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Shuxian Song
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Jeremy Chen
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Bryn M Smith
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA
| | - Carol H Miao
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, WA 98101, USA; Department of Pediatrics, University of Washington, Seattle, WA 98195, USA.
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Zhu L, Zhao H, Zhou Z, Xia Y, Wang Z, Ran H, Li P, Ren J. Peptide-Functionalized Phase-Transformation Nanoparticles for Low Intensity Focused Ultrasound-Assisted Tumor Imaging and Therapy. NANO LETTERS 2018; 18:1831-1841. [PMID: 29419305 DOI: 10.1021/acs.nanolett.7b05087] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/19/2023]
Abstract
In this study, we successfully developed novel tumor homing-penetrating peptide-functionalized drug-loaded phase-transformation nanoparticles (tLyP-1-10-HCPT-PFP NPs) for low intensity focused ultrasound (LIFU)-assisted tumor ultrasound molecular imaging and precise therapy. With the nanoscale particle size, tLyP-1-10-HCPT-PFP NPs could pass through the tumor vascular endothelial cell gap. Induced by tLyP-1 peptide with targeting and penetrating efficiency, tLyP-1-10-HCPT-PFP NPs could increase tumor accumulation and penetrate deeply into the extravascular tumor tissue, penetrating through extracellular matrix and the cellular membrane to the cytoplasm. With LIFU assistance, tLyP-1-10-HCPT-PFP NPs could phase-transform into microbubbles and enhance tumor ultrasound molecular imaging for tumor diagnosis. Furthermore, after further irradiation by LIFU, an intracellular "explosion effect" caused by acoustic droplet vaporization, ultrasound targeted microbubble destruction, and release of 10-HCPT could realize physicochemical synergistic antitumor therapy.
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Affiliation(s)
- LeiLei Zhu
- Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , China
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - HongYun Zhao
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - ZhiYi Zhou
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - YongHong Xia
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - ZhiGang Wang
- Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , China
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - HaiTao Ran
- Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , China
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - Pan Li
- Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , China
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
| | - JianLi Ren
- Ultrasound Department of the Second Affiliated Hospital of Chongqing Medical University , Chongqing 400010 , China
- Chongqing Key Laboratory of Ultrasound Molecular Imaging , Chongqing 400010 , China
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15
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Wang YJ, Zhou Q, Cao S, Hu B, Deng Q, Jiang N, Cui J. Efficient gene therapy with a combination of ultrasound‑targeted microbubble destruction and PEI/DNA/NLS complexes. Mol Med Rep 2017; 16:7685-7691. [PMID: 28944824 DOI: 10.3892/mmr.2017.7510] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 01/27/2017] [Indexed: 11/05/2022] Open
Abstract
Current strategies of gene transfection are not efficient at achieving a notable therapeutic effect. The aim of the present study was to combine ultrasound‑targeted microbubble destruction (UTMD) with a polyethylenimine/pEGFP‑N3 plasmid/nuclear localization sequence (PEI/DNA/NLS) complex gene delivery system, and evaluate the transfection efficiency of enhanced green fluorescent protein (EGFP) gene delivery to 293T cells using this system. The formation of PEI/DNA/NLS complexes and the protective effects of PEI/NLS were verified by gel electrophoresis. Solutions consisting of the plasmid alone, PEI/DNA complexes, PEI/DNA/NLS complexes, UTMD+DNA, UTMD+PEI/DNA complexes, and UTMD+PEI/DNA/NLS complexes were transduced into 293T cells via ultrasound irradiation. The expression of GFP was observed using an inverted microscope and transfection efficiency was detected by flow cytometry following 24 h incubation in vitro. Cell activity was detected using a Cell Counting kit (CCK)‑8 assay. Gel electrophoresis confirmed the formation of PEI/DNA/NLS complexes and demonstrated that PEI/NLS exhibited protective effects on plasmid integrity for a limited time. Inverted microscope observations revealed that a greater GFP signal was observed with the combined action of PEI/DNA/NLS complexes with UTMD, and flow cytometry analysis demonstrated the highest level of transfection efficiency in this group. In addition, the viability of the cells detected by CCK‑8 and treated with PEI/DNA/NLS complexes with UTMD was >80%. In conclusion, the combination of UTMD and PEI/DNA/NLS complexes was highly effective for the efficient transfection of 293T cells without causing excessive cell damage. This method may provide a novel and effective gene transduction system to be applied in clinical treatments.
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Affiliation(s)
- Yi-Jia Wang
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qing Zhou
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Sheng Cao
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Bo Hu
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qing Deng
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Nan Jiang
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jingjing Cui
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Cao S, Zhou Q, Chen JL, Jiang N, Wang YJ, Deng Q, Hu B, Guo RQ. Enhanced effect of nuclear localization signal peptide during ultrasound‑targeted microbubble destruction‑mediated gene transfection. Mol Med Rep 2017; 16:565-572. [PMID: 28586046 PMCID: PMC5482142 DOI: 10.3892/mmr.2017.6661] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Accepted: 03/03/2017] [Indexed: 11/06/2022] Open
Abstract
Ultrasound‑targeted microbubble destruction (UTMD) can promote the entry of plasmid DNA (pDNA) into the cell cytoplasm, by increasing the permeability of the cell membrane. But the transfection efficiency remains low due to inability of the pDNA to enter the nucleus. Various methods have been explored to improve the UTMD transfection efficiency, but with little success. In cells, the classic nuclear localization signal (cNLS) peptide is an amino acid sequence that signals proteins that are due for nuclear transport. The present study aimed to investigate whether binding of a cNLS peptide to the pDNA may improve the transfection efficiency of UTMD. Four experimental groups were analyzed: Control group (UTMD + pDNA), group with cNLS (UTMD + pDNA + cNLS), group with mutated NLS (mNLS; UTMD + pDNA + mNLS), and group with cNLS and the nuclear import blocker, wheat germ agglutinin (WGA; UTMD + pDNA + cNLS + WGA). The NLS was labeled by fluorescein isothiocyanate, whereas pDNA was labeled with Cy3. Different molar ratios were tested for the NLS and pDNA combination in order to achieve optimal binding of the two molecules. Human umbilical vein endothelial cells were then transfected using the optimum ultrasonic irradiation parameters and NLS/pDNA molar ratio. At 6 h post‑transfection, the rates of Cy3‑labeled pDNA inside the cells and their nuclei were detected by flow cytometry and laser confocal microscopy, and the cellular vs. nuclear uptake of pDNA was calculated. In order to further evaluate the effect of NLS on UTMD‑mediated gene transfection, the transfection efficiency and relative expression levels of mRNA and protein were detected at 48 h post‑transfection. The results demonstrated that the optimal molar ratio of NLS with pDNA was 104:1. The rates of pDNA successful entry into the cell and nucleus were significantly higher in the cNLS group compared with the control group. The transfection efficiency, and relative expression levels of mRNA and protein from the plasmid were significantly increased in the cNLS group compared with the control group. The mNLS group displayed no significant difference compared with the control group, while the WGA group exhibited significant inhibition in most indicators of transfection efficiency compared to the cNLS group. These results suggest that combining a cNLS peptide with pDNA during UTMD‑mediated transfection significantly improved transfection efficiency. Thus, a cNLS peptide may be an important mediator and a new strategy in enhancing the efficiency of UTMD‑mediated gene transfection.
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Affiliation(s)
- Sheng Cao
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qing Zhou
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Jin-Ling Chen
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Nan Jiang
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Yi-Jia Wang
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Qing Deng
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Bo Hu
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
| | - Rui-Qiang Guo
- Department of Ultrasound Imaging, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
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Xing L, Shi Q, Zheng K, Shen M, Ma J, Li F, Liu Y, Lin L, Tu W, Duan Y, Du L. Ultrasound-Mediated Microbubble Destruction (UMMD) Facilitates the Delivery of CA19-9 Targeted and Paclitaxel Loaded mPEG-PLGA-PLL Nanoparticles in Pancreatic Cancer. Am J Cancer Res 2016; 6:1573-87. [PMID: 27446491 PMCID: PMC4955056 DOI: 10.7150/thno.15164] [Citation(s) in RCA: 71] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2016] [Accepted: 05/01/2016] [Indexed: 02/07/2023] Open
Abstract
Pancreatic cancer, one of the most lethal human malignancies with dismal prognosis, is refractory to existing radio-chemotherapeutic treatment modalities. There is a critical unmet need to develop effective approaches, especially for targeted pancreatic cancer drug delivery. Targeted and drug-loaded nanoparticles (NPs) combined with ultrasound-mediated microbubble destruction (UMMD) have been shown to significantly increase the cellular uptake in vitro and drug retention in vivo, suggesting a promising strategy for cancer therapy. In this study, we synthesized pancreatic cancer-targeting organic NPs that were modified with anti CA19-9 antibody and encapsulated paclitaxol (PTX). The three-block copolymer methoxy polyethylene glycol-polylacticco-glycolic acid-polylysine (mPEG-PLGA-PLL) constituted the skeleton of the NPs. We speculated that the PTX-NPs-anti CA19-9 would circulate long-term in vivo, "actively target" pancreatic cancer cells, and sustainably release the loaded PTX while UMMD would "passively target" the irradiated tumor and effectively increase the permeability of cell membrane and capillary gaps. Our results demonstrated that the combination of PTX-NPs-anti CA19-9 with UMMD achieved a low IC50, significant cell cycle arrest, and cell apoptosis in vitro. In mouse pancreatic tumor xenografts, the combined application of PTX-NP-anti CA19-9 NPs with UMMD attained the highest tumor inhibition rate, promoted the pharmacokinetic profile by increasing AUC, t1/2, and mean residence time (MRT), and decreased clearance. Consequently, the survival of the tumor-bearing nude mice was prolonged without obvious toxicity. The dynamic change in cellular uptake, targeted real-time imaging, and the concentration of PTX in the plasma and tumor were all closely associated with the treatment efficacy both in vitro and in vivo. Our study suggests that PTX-NP-anti CA19-9 NPs combined with UMMD is a promising strategy for the treatment of pancreatic cancer.
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Khokhlova TD, Haider Y, Hwang JH. Therapeutic potential of ultrasound microbubbles in gastrointestinal oncology: recent advances and future prospects. Therap Adv Gastroenterol 2015; 8:384-94. [PMID: 26557894 PMCID: PMC4622285 DOI: 10.1177/1756283x15592584] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Microbubbles were initially invented as contrast agents for ultrasound imaging. However, lately more and more therapeutic applications of microbubbles are emerging, mostly related to drug and gene delivery. Ultrasound is a safe and noninvasive therapeutic modality which has the unique ability to interact with microbubbles and release their payload in situ in addition to permeabilizing the target tissues. The combination of drug-loaded microbubbles and ultrasound has been used in preclinical studies on blood-brain barrier opening, drug and gene delivery to solid tumors, and ablation of blood vessels. This review covers the basic principles of ultrasound-microbubble interaction, the types of microbubbles and the effect they have on tissue, and the preclinical and clinical experience with this approach to date in the field of gastrointestinal oncology.
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Affiliation(s)
- Tatiana D. Khokhlova
- Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Yasser Haider
- Department of Urology, University of Washington, Seattle, WA, USA
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19
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Delalande A, Leduc C, Midoux P, Postema M, Pichon C. Efficient Gene Delivery by Sonoporation Is Associated with Microbubble Entry into Cells and the Clathrin-Dependent Endocytosis Pathway. ULTRASOUND IN MEDICINE & BIOLOGY 2015; 41:1913-1926. [PMID: 25929996 DOI: 10.1016/j.ultrasmedbio.2015.03.010] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2014] [Revised: 03/06/2015] [Accepted: 03/07/2015] [Indexed: 06/04/2023]
Abstract
Microbubble oscillation at specific ultrasound settings leads to permeabilization of surrounding cells. This phenomenon, referred to as sonoporation, allows for the in vitro and in vivo delivery of extracellular molecules, including plasmid DNA. To date, the biological and physical mechanisms underlying this phenomenon are not fully understood. The aim of this study was to investigate the interactions between microbubbles and cells, as well as the intracellular routing of plasmid DNA and microbubbles, during and after sonoporation. High-speed imaging and fluorescence confocal microscopy of HeLa cells stably expressing enhanced green fluorescent protein fused with markers of cellular compartments were used for this investigation. Soft-shelled microbubbles were observed to enter cells during sonoporation using experimental parameters that led to optimal gene transfer. They interacted with the plasma membrane in a specific area stained with fluorescent cholera subunit B, a marker of lipid rafts. This process was not observed with hard-shelled microbubbles, which were not efficient in gene delivery under our conditions. The plasmid DNA was delivered to late endosomes after 3 h post-sonoporation, and a few were found in the nucleus after 6 h. Gene transfer efficacy was greatly inhibited when cells were treated with chlorpromazine, an inhibitor of the clathrin-dependent endocytosis pathway. In contrast, no significant alteration was observed when cells were treated with filipin III or genistein, both inhibitors of the caveolin-dependent pathway. This study emphasizes that microbubble-cell interactions do not occur randomly during sonoporation; microbubble penetration inside cells affects the efficacy of gene transfer at specific ultrasound settings; and plasmid DNA uptake is an active mechanism that involves the clathrin-dependent pathway.
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Affiliation(s)
| | - Chloé Leduc
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
| | - Patrick Midoux
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
| | - Michiel Postema
- Department of Physics and Technology, University of Bergen, Bergen, Norway; Department of Physics, University of the Witwatersrand, Johannesburg, South Africa
| | - Chantal Pichon
- Centre de Biophysique Moléculaire, CNRS UPR4301, Orléans, France
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20
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Yan C, Zhu D, Huang D, Xia G. Role of ultrasound and microbubble-mediated heat shock protein 72 siRNA on ischemia-reperfusion liver injury in rat. Int J Clin Exp Med 2015; 8:5746-5752. [PMID: 26131160 PMCID: PMC4483912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 03/26/2015] [Indexed: 06/04/2023]
Abstract
OBJECTIVE To explore the ultrasound-guided gene transfection as well as the role of heat shock protein 72 (HSP72) siRNA combined with ultrasound micro-bubble contrast agents on rat hepatic ischemia-reperfusion injury. METHODS 72 SD rats were divided into non-surgery group (group N), sham-operation group (group P) and liver ischemia-reperfusion groups (I/R). In each group, rats were further divided into 4 subgroups according to the different intravenous treatment: 220 ul saline solution (group A); 20 ul HSP72 siRNA plasmid vector + 200 ul saline solution (group B); 20 ul HSP72 siRNA plasmid vector + 200 ul ultrasound microbubble contrast agent (group C); 20 ul HSP72 siRNA plasmid vector + 200 ul ultrasound microbubble contrast agent + ultrasonic irradiation target region with MI1.0 (group D). RESULTS Certain degree hepatic tissue injury was observed in rats of group I/R A, B and C. The expressions of liver tissue HSP72 mRNA and HSP72 protein and the concentrations of peripheral blood HSP72, ALT and TNF-α were significantly increased at each I/R subgroup (vs group N and group P, P < 0.01). Among them, the plasma concentrations of ALT, HSP72, and TNF-α and the liver tissue expressions of HSP72 mRNA and HSP72 protein at group A were significantly higher than groups B, C and D (P < 0.01). And group D was significantly lower than that of group A, B and C (P < 0.01). CONCLUSION The liver tissue expressions of HSP72 mRNA and HSP72 protein and the liver injury degree of ischemia-perfusion were significantly reduced after the HSP72 siRNA was combined with micro-bubble and radiated directionally by ultrasound.
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Affiliation(s)
- Chungen Yan
- Department of Gastroenterology, Affiliated Hospital of Shaoxing UniversityShaoxing 312000, Zhejiang, China
| | - Dongfang Zhu
- Department of Lab Medicine, Affiliated Hospital of Shaoxing UniversityShaoxing 312000, Zhejiang, China
| | - Danwen Huang
- Department of Gastroenterology, Affiliated Hospital of Shaoxing UniversityShaoxing 312000, Zhejiang, China
| | - Guoyuan Xia
- Department of Ultrasound Diagnosis, Affiliated Hospital of Shaoxing UniversityShaoxing 312000, Zhejiang, China
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Tavri S, Vezeridis A, Cui W, Mattrey RF. In Vivo Transfection and Detection of Gene Expression of Stem Cells Preloaded with DNA-carrying Microbubbles. Radiology 2015; 276:518-25. [PMID: 25811427 DOI: 10.1148/radiol.15141380] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
PURPOSE To determine whether (a) stem cells loaded with DNA-carrying microbubbles (MBs) can be transfected in vivo, (b) the cells remain alive to express the gene, and (c) gene expression is sufficiently robust to be detected in vivo. MATERIALS AND METHODS The study was approved by the Institutional Animal Care and Use Committee. Cationic MBs were prepared, characterized, and loaded with pLuciferase green fluorescent protein (GFP) plasmid. Loading was confirmed with SYBR Gold staining (Life Technologies, Carlsbad, Calif). C17.2 cells were loaded with the DNA-carrying MBs. Two hundred thousand cells suspended in 20 μL phosphate-buffered saline were mixed with 200 μL Matrigel (BD Biosciences, San Jose, Calif) and injected in both flanks of eight nude mice. One of the Matrigel (BD Biosciences) injections contained 50 000 cells pretransfected in vitro by using lipofectamine as a positive control. Nine flanks were exposed to 2.25-MHz ultrasonic pulses at 50% duty cycle for 1 minute at 1 W/cm(2) (n = 3) or 2 W/cm(2) (n = 6), and six flanks served as the negative control. Two days later, bioluminescent images were acquired in each mouse every 3 minutes for 1 hour after the intraperitoneal injection of d-luciferin (Perkin Elmer, Waltham, Mass). Differences between groups were assessed by using the nonparametric Kruskal-Wallis test with Wilcoxon rank sum tests for follow-up comparisons. Mice were then killed, plugs were explanted, and alternate sections were stained with hematoxylin-eosin or stained for GFP expression. RESULTS Mean DNA-loaded MB diameter ± standard deviation was 2.87 μm ± 1.69 with the DNA associated with the MB shell. C17.2 cells were associated with 2-4 MBs each, and more than 90% were viable. Peak background subtracted bioluminescent signal was fourfold higher when cells were exposed to 2 W/cm(2) pulses as compared with 1 W/cm(2) pulses (P = .02) and negative controls (P = .002). Histologic examination showed cells within the Matrigel (BD Biosciences) with robust GFP expression only after 2 W/cm(2) ultrasound exposure and lipofectamine transfection. CONCLUSION Stem cells loaded with DNA-carrying MBs can be transfected in vivo with ultrasonic pulses and remain alive to demonstrate robust gene expression.
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Affiliation(s)
- Sidhartha Tavri
- From the Department of Radiology, University of California-San Diego, 200 W Arbor Dr, San Diego, CA 92103
| | - Alexander Vezeridis
- From the Department of Radiology, University of California-San Diego, 200 W Arbor Dr, San Diego, CA 92103
| | - Wenjin Cui
- From the Department of Radiology, University of California-San Diego, 200 W Arbor Dr, San Diego, CA 92103
| | - Robert F Mattrey
- From the Department of Radiology, University of California-San Diego, 200 W Arbor Dr, San Diego, CA 92103
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Liu Y, Li L, Su Q, Liu T, Ma Z, Yang H. Ultrasound-Targeted Microbubble Destruction Enhances Gene Expression of microRNA-21 in Swine Heart via Intracoronary Delivery. Echocardiography 2015; 32:1407-16. [PMID: 25613289 DOI: 10.1111/echo.12876] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Ultrasound-targeted microbubble destruction (UTMD) has proved to be a promising method for gene delivery. However, the feasibility and efficacy of UTMD-mediated gene delivery to the heart of large animals remain unclear. The present study was to explore the probability of increasing the transfection of microRNA-21 (miR-21) in swine heart by UTMD, and to search for the most suitable transfection conditions. METHODS We first optimized ultrasound intensity for successful miR-21 delivery. After intravenous injection of miR-21/microbubble mixture (miR-21/MB), transthoracic ultrasound irradiation (US) was applied from the left anterior chest using different intensities (1, 2, and 3 W/cm(2)). Then the efficacy of UTMD-mediated miR-21 delivery into myocardium via intracoronary injection was explored. Solution of miR-21/MB was infused intravenously or intracoronarily with US over the heart. Swine undergoing phosphate-buffered saline (PBS) injection, miR-21/MB injection via ear vein or coronary artery without US served as the control. The dynamic changes of left ventricular ejection fraction (LVEF) and serum troponin I (cTnI) after UTMD were detected, then the left ventricular myocardium was harvested for hematoxylin and eosin (H&E) staining 4 days later; the expression levels of miR-21 and programmed cell death 4 (PDCD4) were detected by quantitative real time polymerase chain reaction (qRT-PCR) and Western blot, respectively. RESULTS Results showed that pulse ultrasound at an intensity of 2 W/cm(2) and a 50% duty ratio for 20 minutes, there was no increase in serum cTnI, no histological sign of myocardial damage, and no noted cardiac dysfunction with relatively higher miR-21 expression (P < 0.05). Compared to miR-21/MB alone, UTMD significantly increased gene expression in myocardium regardless of the delivery routes (P < 0.05). Interestingly, the transfection efficiency was found to be a little bit higher with intracoronary injection than that with intravenous injection, though the dose for intracoronary injection was half of the intravenous injection (P < 0.05). CONCLUSION Under suitable conditions, UTMD can efficiently enhance gene expression in swine heart regardless of the delivery routes. The intravenous injection might be superior to intracoronary injection with less invasiveness and lower requirement of the technique. And for those undergoing percutaneous coronary intervention, intracoronary injection seems to be another alternative.
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Affiliation(s)
- Yangchun Liu
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Lang Li
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Qiang Su
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Tao Liu
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Zhiying Ma
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Huafeng Yang
- Department of Cardiology, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
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23
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Misra SK, Ghoshal G, Jensen TW, Ray PS, Burdette EC, Pan D. Bi-modal cancer treatment utilizing therapeutic ultrasound and an engineered therapeutic nanobubble. RSC Adv 2015. [DOI: 10.1039/c5ra08977h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We developed a bi-modal cancer therapy comprising a sorafenib loaded ultra-sonic responsive nanobubble (SRF-NB) for ultrasonic assisted delivery in hepatocellular carcinoma.
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Affiliation(s)
- Santosh K. Misra
- Department of Bioengineering and Beckman Institute
- University of Illinois at Urbana-Champaign and Carle Cancer Center
- Urbana
- USA
| | | | - Tor W. Jensen
- Department of Bioengineering and Beckman Institute
- University of Illinois at Urbana-Champaign and Carle Cancer Center
- Urbana
- USA
| | - Partha S. Ray
- Department of Surgery
- University of Illinois College of Medicine
- Division of Surgical Oncology
- Carle Cancer Center
- Urbana
| | | | - Dipanjan Pan
- Department of Bioengineering and Beckman Institute
- University of Illinois at Urbana-Champaign and Carle Cancer Center
- Urbana
- USA
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Fang YL, Chen XG, W T G. Gene delivery in tissue engineering and regenerative medicine. J Biomed Mater Res B Appl Biomater 2014; 103:1679-99. [PMID: 25557560 DOI: 10.1002/jbm.b.33354] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 11/07/2014] [Accepted: 11/18/2014] [Indexed: 12/13/2022]
Abstract
As a promising strategy to aid or replace tissue/organ transplantation, gene delivery has been used for regenerative medicine applications to create or restore normal function at the cell and tissue levels. Gene delivery has been successfully performed ex vivo and in vivo in these applications. Excellent proliferation capabilities and differentiation potentials render certain cells as excellent candidates for ex vivo gene delivery for regenerative medicine applications, which is why multipotent and pluripotent cells have been intensely studied in this vein. In this review, gene delivery is discussed in detail, along with its applications to tissue engineering and regenerative medicine. A definition of a stem cell is compared to a definition of a stem property, and both provide the foundation for an in-depth look at gene delivery investigations from a germ lineage angle.
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Affiliation(s)
- Y L Fang
- Department of Chemical & Biomolecular Engineering, Laboratory for Gene Therapy and Cellular Engineering, Tulane University, 300 Lindy Boggs Center, New Orleans, Louisiana, 70118
| | - X G Chen
- Department of Chemical & Biomolecular Engineering, Laboratory for Gene Therapy and Cellular Engineering, Tulane University, 300 Lindy Boggs Center, New Orleans, Louisiana, 70118
| | - Godbey W T
- Department of Chemical & Biomolecular Engineering, Laboratory for Gene Therapy and Cellular Engineering, Tulane University, 300 Lindy Boggs Center, New Orleans, Louisiana, 70118
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25
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Abstract
Plasmid or non-viral gene therapy offers an alternative to classic viral gene delivery that negates the need for a biological vector. In this case, delivery is enhanced by a variety of approaches including lipid or polymer conjugation, particle-mediated delivery, hydrodynamic delivery, ultrasound or electroporation. Electroporation was originally used as a laboratory tool to deliver DNA to bacterial and mammalian cells in culture. Electrode development allowed this technique to be modified for in vivo use. After preclinical therapeutic studies, clinical delivery of cell impermeant chemotherapeutic agents progressed to clinical delivery of plasmid DNA. One huge benefit of this delivery technique is its malleability. The pulse protocol used for plasmid delivery can be fine-tuned to control the levels and duration of subsequent transgene expression. This fine-tuning allows transgene expression to be tailored to each therapeutic application. Effective and appropriate expression induces the desired clinical response that is a critical component for any gene therapy. This chapter focuses on clinical trials using in vivo electroporation or electrotransfer as a plasmid delivery method. The first clinical trial was initiated in 2004, and now more than fifty trials use electric fields for gene delivery. Safety and tolerability has been demonstrated by several groups, and early clinical efficacy results are promising in both cancer therapeutic and infectious disease vaccine applications.
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Affiliation(s)
- Richard Heller
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA; School of Medical Diagnostics and Translational Sciences, College of Health Sciences, Old Dominion University, Norfolk, VA, USA
| | - Loree C Heller
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA; School of Medical Diagnostics and Translational Sciences, College of Health Sciences, Old Dominion University, Norfolk, VA, USA
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Mathaes R, Winter G, Besheer A, Engert J. Non-spherical micro- and nanoparticles: fabrication, characterization and drug delivery applications. Expert Opin Drug Deliv 2014; 12:481-92. [PMID: 25327886 DOI: 10.1517/17425247.2015.963055] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Micro- and nanoparticles in drug and vaccine delivery have opened up new possibilities in pharmaceutics. In the past, researchers focused mainly on particle size, surface chemistry and the use of various materials to control particle characteristics and functions. Lately, shape has been acknowledged as an important design parameter having an impact on the interaction with biological systems. AREAS COVERED In this review, we report on the latest developments in fabrication methods to tailor particle geometry, summarize analytical techniques for non-spherical particles and highlight the most important findings regarding their interaction with biological systems and their potential applications in drug delivery. EXPERT OPINION The impact of shape on particle internalization into different cell types and particle biodistribution has been extensively studied in the past. Current research focuses on shape-dependent uptake mechanisms and applications for tumour therapy and vaccination. Different fabrication methods can be used to produce a variety of different particle types and shapes. Key challenges will be the transfer of new non-spherical particle fabrication methods from lab-scale to industrial large-scale production. Not all techniques may be scalable for the production of high quantities of particles. It will also be challenging to transfer the promising in vitro findings to suitable in vivo models.
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Affiliation(s)
- Roman Mathaes
- Pharmacist, PhD Student,Ludwig-Maximillians-University Munich, Department of Pharmacy, Pharmaceutical Technology and Biopharmaceutics , Butenandtstr. 5, D-81377 Munich , Germany
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piggyBac-mediated phenotypic correction of factor VIII deficiency. MOLECULAR THERAPY-METHODS & CLINICAL DEVELOPMENT 2014; 1:14042. [PMID: 26015980 PMCID: PMC4362371 DOI: 10.1038/mtm.2014.42] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 07/24/2014] [Indexed: 01/10/2023]
Abstract
Hemophilia A, caused by a deficiency in factor VIII (FVIII), is the most severe inherited bleeding disorder. Hemophilia A is an attractive gene therapy candidate because even small increases in FVIII levels will positively alter the phenotype. While several vectors are under investigation, gene addition from an integrated transgene offers the possibility of long term expression. We engineered the DNA transposon-based vector, piggyBac (PB), to carry a codon-optimized B-domain deleted human FVIII cDNA. Evaluation of gene transfer efficiency in FVIII null mice demonstrated that PB containing the FVIII cDNA, delivered via hydrodynamic injection to immunocompetent hemophilia mice, conferred persistent gene expression, attaining mean FVIII activity of approximately 60% with 3/19 developing inhibitors. In addition to efficacious expression, a goal of gene transfer-based therapies is to develop vectors with low toxicity. To assess endoplasmic reticulum stress in hepatocytes stably expressing the transgene, we evaluated levels of ER stress markers via qPCR and found no evidence of cell stress. To evaluate phenotypic correction, a tail clip assay performed at the end of the study revealed reduced blood loss. These data demonstrate that PB can be used to achieve sustained FVIII expression and long-term therapeutic benefit in a mouse model.
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Yoon YI, Kwon YS, Cho HS, Heo SH, Park KS, Park SG, Lee SH, Hwang SI, Kim YI, Jae HJ, Ahn GJ, Cho YS, Lee H, Lee HJ, Yoon TJ. Ultrasound-mediated gene and drug delivery using a microbubble-liposome particle system. Theranostics 2014; 4:1133-44. [PMID: 25250094 PMCID: PMC4165777 DOI: 10.7150/thno.9945] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 08/08/2014] [Indexed: 01/17/2023] Open
Abstract
Theranostic agents present a promising clinical approach for cancer detection and treatment. We herein introduce a microbubble and liposome complex (MB-Lipo) developed for ultrasound (US) imaging and activation. The MB-Lipo particles have a hybrid structure consisting of a MB complexed with multiple Lipos. The MB components are used to generate high echo signals in US imaging, while the Lipos serve as a versatile carrier of therapeutic materials. MB-Lipo allows high contrast US imaging of tumor sites. More importantly, the application of high acoustic pressure bursts MBs, which releases therapeutic Lipos and further enhances their intracellular delivery through sonoporation effect. Both imaging and drug release could thus be achieved by a single US modality, enabling in situ treatment guided by real-time imaging. The MB-Lipo system was applied to specifically deliver anti-cancer drug and genes to tumor cells, which showed enhanced therapeutic effect. We also demonstrate the clinical potential of MB-Lipo by imaging and treating tumor in vivo.
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Affiliation(s)
- Young Il Yoon
- 1. Department of Radiology, Seoul National University College of Medicine, Seoul 110-799, South Korea
- 2. Department of Radiology, Seoul National University Bundang Hospital, Seungnam 463-707, South Korea
- 3. Program in Nano Science and Technology, Department of Transdisciplinary Studies, Seoul National University Graduate School of Convergence Science and Technology, Suwon 443-270, South Korea
| | - Yong-Su Kwon
- 4. Department of Applied Bioscience, College of Life Science, CHA University, Pocheon 135-081, South Korea
| | - Hee-Sang Cho
- 4. Department of Applied Bioscience, College of Life Science, CHA University, Pocheon 135-081, South Korea
| | - Sun-Hee Heo
- 5. Department of Biomedical Science, College of Life Science, CHA University, Pocheon 135-081, South Korea
| | - Kyeong Soon Park
- 5. Department of Biomedical Science, College of Life Science, CHA University, Pocheon 135-081, South Korea
| | - Sang Gyu Park
- 5. Department of Biomedical Science, College of Life Science, CHA University, Pocheon 135-081, South Korea
| | - Soo-Hong Lee
- 5. Department of Biomedical Science, College of Life Science, CHA University, Pocheon 135-081, South Korea
| | - Seung Il Hwang
- 1. Department of Radiology, Seoul National University College of Medicine, Seoul 110-799, South Korea
- 2. Department of Radiology, Seoul National University Bundang Hospital, Seungnam 463-707, South Korea
| | - Young Il Kim
- 1. Department of Radiology, Seoul National University College of Medicine, Seoul 110-799, South Korea
| | - Hwan Jun Jae
- 1. Department of Radiology, Seoul National University College of Medicine, Seoul 110-799, South Korea
| | - Gook-Jun Ahn
- 7. Laboratory animal center, KBIO Osong Medical Innovation Foundation, Osong, Cheongwon, Chungbuk 363-951, South Korea
| | - Young-Seok Cho
- 8. Department of Gastroenterology, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Uijeongbu 480-717, South Korea
| | - Hakho Lee
- 9. Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge St, CPZN 5206, Boston, MA 02114, USA
| | - Hak Jong Lee
- 1. Department of Radiology, Seoul National University College of Medicine, Seoul 110-799, South Korea
- 2. Department of Radiology, Seoul National University Bundang Hospital, Seungnam 463-707, South Korea
- 3. Program in Nano Science and Technology, Department of Transdisciplinary Studies, Seoul National University Graduate School of Convergence Science and Technology, Suwon 443-270, South Korea
- 10. Nanoimaging and Therapy Research Center, Institute of Nanoconvergence, Advanced Institutes of Convergence Technology, Seoul National University
| | - Tae-Jong Yoon
- 4. Department of Applied Bioscience, College of Life Science, CHA University, Pocheon 135-081, South Korea
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Yang CH, Wang WT, Grumezescu AM, Huang KS, Lin YS. One-step synthesis of platinum nanoparticles loaded in alginate bubbles. NANOSCALE RESEARCH LETTERS 2014; 9:277. [PMID: 25050086 PMCID: PMC4094925 DOI: 10.1186/1556-276x-9-277] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 05/24/2014] [Indexed: 06/03/2023]
Abstract
Composite particles with multifunctions have been extensively utilized for various applications. Bubble particles can be applied for ultrasound-mediated imaging, drug delivery, absorbers, cell culture, etc. This study proposes a one-step strategy to obtain Pt nanoparticles loaded in alginate bubbles. A needle-based droplet formation was used to generate uniform alginate particles about 2 mm in diameter. The hydrolysis reaction of NaBH4 was utilized to produce gaseous hydrogen and then trapped within alginate particles to form bubbles. The Pt(4+) mixed with alginate solution was dropped into the reservoir to react with reducing NaBH4 and hardening CaCl2 to form Pt nanoparticles-alginate composite bubbles. Results indicate that the size of bubbles decreases with the CaCl2 concentration (1% ~ 20%), and size of bubbles increases with the NaBH4 concentration (1 ~ 20 mM). The advantages for the present approach include low cost, easy operation, and effective production of Pt nanoparticles-alginate composite bubbles.
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Affiliation(s)
- Chih-Hui Yang
- Department of Biological Science and Technology, I-Shou University, Kaohsiung 82445, Taiwan
| | - Wei-Ting Wang
- Department of Biological Science and Technology, I-Shou University, Kaohsiung 82445, Taiwan
- The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung 82445, Taiwan
| | - Alexandru Mihai Grumezescu
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Faculty of Applied Chemistry and Materials Science, University Politehnica of Bucharest, Bucharest 060042, Romania
| | - Keng-Shiang Huang
- The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung 82445, Taiwan
| | - Yung-Sheng Lin
- Department of Applied Cosmetology and Master Program of Cosmetic Science, Hungkuang University, Taichung 43302, Taiwan
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30
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Sun RR, Noble ML, Sun SS, Song S, Miao CH. Development of therapeutic microbubbles for enhancing ultrasound-mediated gene delivery. J Control Release 2014; 182:111-20. [PMID: 24650644 DOI: 10.1016/j.jconrel.2014.03.002] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 02/21/2014] [Accepted: 03/03/2014] [Indexed: 12/15/2022]
Abstract
Ultrasound (US)-mediated gene delivery has emerged as a promising non-viral method for safe and selective gene delivery. When enhanced by the cavitation of microbubbles (MBs), US exposure can induce sonoporation that transiently increases cell membrane permeability for localized delivery of DNA. The present study explores the effect of generalizable MB customizations on MB facilitation of gene transfer compared to Definity®, a clinically available contrast agent. These modifications are 1) increased MB shell acyl chain length (RN18) for elevated stability and 2) addition of positive charge on MB (RC5K) for greater DNA associability. The MB types were compared in their ability to facilitate transfection of luciferase and GFP reporter plasmid DNA in vitro and in vivo under various conditions of US intensity, MB dosage, and pretreatment MB-DNA incubation. The results indicated that both RN18 and RC5K were more efficient than Definity®, and that the cationic RC5K can induce even greater transgene expression by increasing payload capacity with prior DNA incubation without compromising cell viability. These findings could be applied to enhance MB functions in a wide range of therapeutic US/MB gene and drug delivery approach. With further designs, MB customizations have the potential to advance this technology closer to clinical application.
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Affiliation(s)
- Ryan R Sun
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, USA
| | - Misty L Noble
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, USA
| | - Samuel S Sun
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, USA
| | - Shuxian Song
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, USA
| | - Carol H Miao
- Center for Immunity and Immunotherapies, Seattle Children's Research Institute, Seattle, USA; Dept. of Pediatrics, University of Washington, Seattle, USA.
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31
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Huang KS, Lin YS, Chang WR, Wang YL, Yang CH. A facile fabrication of alginate microbubbles using a gas foaming reaction. Molecules 2013; 18:9594-602. [PMID: 23941880 PMCID: PMC6269812 DOI: 10.3390/molecules18089594] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 08/06/2013] [Accepted: 08/07/2013] [Indexed: 11/18/2022] Open
Abstract
Microbubble particles have been extensively utilized as temporal templates for various biomedical applications. This study proposes a facile strategy to obtain microbubble-containing alginate particles (i.e., microbubbles inside alginate gel particles, called alginate microbubbles). The chemical reaction of sodium bicarbonate and hydrogen peroxide to produce gaseous carbon dioxide and oxygen was utilized to form microbubbles within alginate particles. Uniform alginate particles were obtained by a stable needle-based droplet formation process. Kinetic reaction of gas formation was monitored for 2% alginate particles. The gas formation increased with the concentrations of sodium bicarbonate (1-5 wt%) and hydrogen peroxide (0-36.5 wt%).
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Affiliation(s)
- Keng-Shiang Huang
- The School of Chinese Medicine for Post-Baccalaureate, I-Shou University, Kaohsiung 82445, Taiwan; E-Mail:
| | - Yung-Sheng Lin
- Department of Applied Cosmetology and Master Program of Cosmetic Science, Hungkuang University, Taichung 43302, Taiwan; E-Mail:
| | - Wan-Ru Chang
- Department of Biological Science and Technology, I-Shou University, Kaohsiung 82445, Taiwan; E-Mails: (W.-R.C.); (Y.-L.W.)
| | - Yi-Ling Wang
- Department of Biological Science and Technology, I-Shou University, Kaohsiung 82445, Taiwan; E-Mails: (W.-R.C.); (Y.-L.W.)
| | - Chih-Hui Yang
- Department of Biological Science and Technology, I-Shou University, Kaohsiung 82445, Taiwan; E-Mails: (W.-R.C.); (Y.-L.W.)
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