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Hou J, Zhou J, Chang M, Bao G, Xu J, Ye M, Zhong Y, Liu S, Wang J, Zhang W, Ran H, Wang Z, Chen Y, Guo D. LIFU-responsive nanomedicine enables acoustic droplet vaporization-induced apoptosis of macrophages for stabilizing vulnerable atherosclerotic plaques. Bioact Mater 2022; 16:120-133. [PMID: 35386311 PMCID: PMC8958425 DOI: 10.1016/j.bioactmat.2022.02.022] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 02/21/2022] [Accepted: 02/21/2022] [Indexed: 02/07/2023] Open
Abstract
Due to the high risk of tearing and rupture, vulnerable atherosclerotic plaques would induce serious cardiovascular and cerebrovascular diseases. Despite the available clinical methods can evaluate the vulnerability of plaques and specifically treat vulnerable plaques before a cardiovascular event, but the efficiency is still low and undesirable. Herein, we rationally design and engineer the low-intensity focused ultrasound (LIFU)-responsive FPD@CD nanomedicine for the highly efficient treatment of vulnerable plaques by facilely loading phase transition agent perfluorohexane (PFH) into biocompatible PLGA-PEG-PLGA nanoparticles (PPP NPs) and then attaching dextran sulphate (DS) onto the surface of PPP NPs for targeting delivery. DS, as a typical macrophages-targeted molecule, can achieve the precise vaporization of NPs and subsequently controllable apoptosis of RAW 264.7 macrophages as induced by acoustic droplet vaporization (ADV) effect. In addition, the introduction of DiR and Fe3O4 endows nanomedicine with near-infrared fluorescence (NIRF) and magnetic resonance (MR) imaging capabilities. The engineered FPD@CD nanomedicine that uses macrophages as therapeutic targets achieve the conspicuous therapeutic effect of shrinking vulnerable plaques based on in vivo and in vitro evaluation outcomes. A reduction of 49.4% of vascular stenosis degree in gross pathology specimens were achieved throughout the treatment period. This specific, efficient and biosafe treatment modality potentiates the biomedical application in patients with cardiovascular and cerebrovascular diseases based on the relief of the plaque rupture concerns. A new nanomedicine-enabled treatment strategy has been developed for treating vulnerable plaques by employing ADV. The optimal treatment conditions for ADV have been explored, including LIFU irradiation power intensity and plaque stability. The underlying mechanism of nanomedicine-enabled ADV in the treatment of vulnerable plaques has been studied systematically.
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Affiliation(s)
- Jingxin Hou
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Jun Zhou
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Meiqi Chang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, PR China
| | - Guangcheng Bao
- Department of Radiology, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China
| | - Jie Xu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Man Ye
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Yixin Zhong
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Shuling Liu
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Junrui Wang
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Wei Zhang
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Haitao Ran
- Chongqing Key Laboratory of Ultrasound Molecular Imaging & Department of Ultrasound, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Zhigang Wang
- Chongqing Key Laboratory of Ultrasound Molecular Imaging & Department of Ultrasound, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
| | - Yu Chen
- Materdicine Lab, School of Life Sciences, Shanghai University, Shanghai, 200444, PR China
| | - Dajing Guo
- Department of Radiology, Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, PR China
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Kim CW, Hwang BH, Moon H, Kang J, Park EH, Ihm SH, Chang K, Hong KS. In vivo MRI detection of intraplaque macrophages with biocompatible silica-coated iron oxide nanoparticles in murine atherosclerosis. J Appl Biomater Funct Mater 2021; 19:22808000211014751. [PMID: 34520279 DOI: 10.1177/22808000211014751] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Identification of a vulnerable atherosclerotic plaque before rupture is an unmet clinical need. Integrating nanomedicine with multimodal imaging has the potential to precisely detect biological processes in atherosclerosis. We synthesized silica-coated iron oxide nanoparticles (SIONs) coated with rhodamine B isothiocyanate and polyethylene glycol and investigated their feasibility in the detection of macrophages in inflamed atherosclerotic plaques of apolipoprotein E-deficient (ApoE-/-) mice via magnetic resonance (MR) and fluorescence reflectance (FR) imaging. In vitro cellular uptake of SIONs was assessed in macrophages using confocal laser scanning microscopy (CLSM). In vivo MR imaging was performed 24 h after SION injection via the tail vein in 26-week-old ApoE-/- mice fed a high-cholesterol diet (HCD). We also performed FR imaging of the extracted aortas from four different mice: two normal-diet-fed C57BL/6 mice injected with saline or 10 mg/kg SIONs and two HCD-fed ApoE-/- mice injected with 5 or 10 mg/kg SIONs. The harvested aortas were cryosectioned and stained with immunohistochemical staining. The CLSM images at 24 h after incubation showed efficient uptake of SIONs by macrophages, with no evidence of cytotoxicity. The in vivo and ex vivo MR and FR images demonstrated SION deposition in the atheroma. Upon immunohistochemical staining of the aorta, CLSM images revealed colocalization of macrophages and SIONs in the atherosclerotic plaque. These results demonstrate that polyethylene glycosylated SIONs could be a highly effective method to identify macrophage activity in atherosclerotic plaques as a multimodal imaging agent.
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Affiliation(s)
- Chan Woo Kim
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Byung-Hee Hwang
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Hyeyoung Moon
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea
| | - Jongeun Kang
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
| | - Eun-Hye Park
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Sang-Hyun Ihm
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Bucheon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Kiyuk Chang
- Catholic Research Institute for Intractable Cardiovascular Disease, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea.,Division of Cardiology, Department of Internal Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Kwan Soo Hong
- Research Center for Bioconvergence Analysis, Korea Basic Science Institute, Cheongju, Republic of Korea.,Graduate School of Analytical Science and Technology, Chungnam National University, Daejeon, Republic of Korea
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Friedrich RP, Cicha I, Alexiou C. Iron Oxide Nanoparticles in Regenerative Medicine and Tissue Engineering. NANOMATERIALS 2021; 11:nano11092337. [PMID: 34578651 PMCID: PMC8466586 DOI: 10.3390/nano11092337] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 09/03/2021] [Accepted: 09/06/2021] [Indexed: 12/13/2022]
Abstract
In recent years, many promising nanotechnological approaches to biomedical research have been developed in order to increase implementation of regenerative medicine and tissue engineering in clinical practice. In the meantime, the use of nanomaterials for the regeneration of diseased or injured tissues is considered advantageous in most areas of medicine. In particular, for the treatment of cardiovascular, osteochondral and neurological defects, but also for the recovery of functions of other organs such as kidney, liver, pancreas, bladder, urethra and for wound healing, nanomaterials are increasingly being developed that serve as scaffolds, mimic the extracellular matrix and promote adhesion or differentiation of cells. This review focuses on the latest developments in regenerative medicine, in which iron oxide nanoparticles (IONPs) play a crucial role for tissue engineering and cell therapy. IONPs are not only enabling the use of non-invasive observation methods to monitor the therapy, but can also accelerate and enhance regeneration, either thanks to their inherent magnetic properties or by functionalization with bioactive or therapeutic compounds, such as drugs, enzymes and growth factors. In addition, the presence of magnetic fields can direct IONP-labeled cells specifically to the site of action or induce cell differentiation into a specific cell type through mechanotransduction.
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Affiliation(s)
- Xinping Zhang
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering Southeast University Nanjing China
| | - Xiaoyang Liu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering Southeast University Nanjing China
| | - Yuxin Guo
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering Southeast University Nanjing China
| | - Fu‐Gen Wu
- State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering Southeast University Nanjing China
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