1
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Kim T, Kim D. Mesoporous silica-supported platinum nanocatalysts for colorimetric detection of glucose, cholesterol, and C-reactive protein. Dalton Trans 2024; 53:12649-12661. [PMID: 39012273 DOI: 10.1039/d4dt01534g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/17/2024]
Abstract
Noble metal nanoparticles decorated on a catalyst support with a large specific surface area can exhibit enhanced catalytic activity. To this end, a synthetic method to heterogeneously and evenly nucleate platinum nanoparticles (Pt NPs) onto mesoporous silica nanoparticles (MSNs) is developed. The obtained Pt NP-modified MSNs (Pt-MSNs) are characterized as a thin layer of 3 nm-sized Pt NPs densely assembled on the MSN surface, by which the throughput of the peroxidase-like activity of Pt-MSNs is greatly improved. The utility of Pt-MSNs in colorimetric detection of analytes is validated for two different assay schemes. Firstly, colloidally dispersed Pt-MSNs are employed as a peroxidase-mimic in a two-step cascade reaction to quantitate glucose/cholesterol based on the amount of H2O2 produced by glucose/cholesterol oxidase. Secondly, detection of C-reactive protein (CRP) is conducted on a solid substrate by adopting a sandwich immunoassay format. Detection limits are estimated to be 20 μM, 55 μM, and 3.9 pM for glucose, cholesterol, and CRP, respectively.
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Affiliation(s)
- Taehyeong Kim
- Department of Bionano Engineering, Hanyang University, Ansan 15588, Republic of Korea.
- Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
| | - Dokyoon Kim
- Department of Bionano Engineering, Hanyang University, Ansan 15588, Republic of Korea.
- Center for Bionano Intelligence Education and Research, Hanyang University, Ansan 15588, Republic of Korea
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2
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Ma J, Li Y, Ying Y, Wu B, Liu Y, Zhou J, Hu L. Progress of Mesoporous Silica Coated Gold Nanorods for Biological Imaging and Cancer Therapy. ChemMedChem 2024; 19:e202300374. [PMID: 37990850 DOI: 10.1002/cmdc.202300374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 11/19/2023] [Accepted: 11/19/2023] [Indexed: 11/23/2023]
Abstract
For unique surface plasmon absorption and fluorescence characteristics, gold nanorods have been developed and widely employed in the biomedical field. However, limitations still exist due their low specific surface area, instability and tendency agglomerate in cytoplasm. Mesoporous silica materials have been broadly applied in field of catalysts, adsorbents, nanoreactors, and drug carriers due to its unique mesoporous structure, highly comparative surface area, good stability and biocompatibility. Therefore, coating gold nanorods with a dendritic mesopore channels can effectively prevent particle agglomeration, while increasing the specific surface area and drug loading efficiency. This review discusses the advancements of GNR@MSN in synthetic process, bio-imaging technique and tumor therapy. Additionally, the further application of GNR@MSN in imaging-guided treatment modalities is explored, while its promising superior application prospect is highlighted. Finally, the issues related to in vivo studies are critically examined for facilitating the transition of this promising nanoplatform into clinical trials.
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Affiliation(s)
- Jiaying Ma
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, University of South China, Hengyang, 421001, PR China
| | - Yongzhen Li
- Department of Pharmacy, School of Pharmacy, University of South China, Hengyang, 421001, PR China
| | - Yunfei Ying
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, University of South China, Hengyang, 421001, PR China
| | - Baibei Wu
- Department of Clinical Medicine, University of South China, Hengyang, 421001, PR China
| | - Yanmei Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, University of South China, Hengyang, 421001, PR China
| | - Juan Zhou
- School of Mechanical Engineering, University of South China, Hengyang, 421001, PR China
| | - Lidan Hu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, University of South China, Hengyang, 421001, PR China
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3
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Gusta MF, Ernst LM, Moriones OH, Piella J, Valeri M, Bastus NG, Puntes V. Long-Term Intracellular Tracking of Label-Free Nanoparticles in Live Cells and Tissues with Confocal Microscopy. SMALL METHODS 2024:e2301713. [PMID: 38564783 DOI: 10.1002/smtd.202301713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 03/01/2024] [Indexed: 04/04/2024]
Abstract
The label-free imaging of inorganic nanoparticles (NPs) using confocal laser scanning microscopy (CLSM) provides a powerful and versatile tool for studying interactions between NPs and biological systems. Without the need for exogenous labels or markers, it simply benefits from the differential scattering of visible photons between biomaterials and inorganic NPs. Validation experiments conducted on fixed and living cells in real-time, as well as mouse tissue sections following parenteral administration of NPs. Additionally, by incorporating reporter fluorophores and utilizing both reflectance and fluorescence imaging modalities, the method enables high-resolution multiplex imaging of cellular structures and NPs. Different sizes and concentrations of Au NPs are tested as for Ag, Fe3O4, and CeO2 NPs, all with biological interest. Overall, the comprehensive study of NP imaging by confocal microscopy in reflectance mode provides valuable insights and tools for researchers interested in monitoring the nano-bio interactions.
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Affiliation(s)
- Muriel F Gusta
- Institut Català de Nanociència i Nanotecnologia (ICN2), Campus UAB, Bellaterra, Barcelona, 08193, Spain
- Vall d'Hebron Institut of Research (VHIR), Barcelona, 08035, Spain
- Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain
| | - Lena M Ernst
- Vall d'Hebron Institut of Research (VHIR), Barcelona, 08035, Spain
| | - Oscar H Moriones
- Institut Català de Nanociència i Nanotecnologia (ICN2), Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - Jordi Piella
- Institut Català de Nanociència i Nanotecnologia (ICN2), Campus UAB, Bellaterra, Barcelona, 08193, Spain
| | - Marta Valeri
- Vall d'Hebron Institut of Research (VHIR), Barcelona, 08035, Spain
| | - Neus G Bastus
- Institut Català de Nanociència i Nanotecnologia (ICN2), Campus UAB, Bellaterra, Barcelona, 08193, Spain
- Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain
| | - Victor Puntes
- Institut Català de Nanociència i Nanotecnologia (ICN2), Campus UAB, Bellaterra, Barcelona, 08193, Spain
- Vall d'Hebron Institut of Research (VHIR), Barcelona, 08035, Spain
- Networking Research Centre for Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN), Madrid, 28029, Spain
- Institució Catalana de Recerca i Estudis Avançats (ICREA), Barcelona, 08010, Spain
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4
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Yu J, Dan N, Eslami SM, Lu X. State of the Art of Silica Nanoparticles: An Overview on Biodistribution and Preclinical Toxicity Studies. AAPS J 2024; 26:35. [PMID: 38514482 DOI: 10.1208/s12248-024-00906-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 02/29/2024] [Indexed: 03/23/2024] Open
Abstract
Over the past few years, nanoparticles have drawn particular attention in designing and developing drug delivery systems due to their distinctive advantages like improved pharmacokinetics, reduced toxicity, and specificity. Along with other successful nanosystems, silica nanoparticles (SNPs) have shown promising effects for therapeutic and diagnostic purposes. These nanoparticles are of great significance owing to their modifiable surface with various ligands, tunable particle size, and large surface area. The rate and extent of degradation and clearance of SNPs depend on factors such as size, shape, porosity, and surface modification, which directly lead to varying toxic mechanisms. Despite SNPs' enormous potential for clinical and pharmaceutical applications, safety concerns have hindered their translation into the clinic. This review discusses the biodistribution, toxicity, and clearance of SNPs and the formulation-related factors that ultimately influence clinical efficacy and safety for treatment. A holistic view of SNP safety will be beneficial for developing an enabling SNP-based drug product.
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Affiliation(s)
- Joshua Yu
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, Connecticut, USA
| | - Nirnoy Dan
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, Connecticut, USA
| | - Seyyed Majid Eslami
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, Connecticut, USA
| | - Xiuling Lu
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Connecticut, Storrs, Connecticut, USA.
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5
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Wen H, Martínez MG, Happonen E, Qian J, Vallejo VG, Mendazona HJ, Jokivarsi K, Scaravilli M, Latonen L, Llop J, Lehto VP, Xu W. A PEG-assisted membrane coating to prepare biomimetic mesoporous silicon for PET/CT imaging of triple-negative breast cancer. Int J Pharm 2024; 652:123764. [PMID: 38176479 DOI: 10.1016/j.ijpharm.2023.123764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 11/27/2023] [Accepted: 12/31/2023] [Indexed: 01/06/2024]
Abstract
Triple-negative breast cancer (TNBC) diagnosis remains challenging without expressing critical receptors. Cancer cell membrane (CCm) coating has been extensively studied for targeted cancer diagnostics due to attractive features such as good biocompatibility and homotypic tumor-targeting. However, the present study found that widely used CCm coating approaches, such as extrusion, were not applicable for functionalizing irregularly shaped nanoparticles (NPs), such as porous silicon (PSi). To tackle this challenge, we proposed a novel approach that employs polyethylene glycol (PEG)-assisted membrane coating, wherein PEG and CCm are respectively functionalized on PSi NPs through chemical conjugation and physical absorption. Meanwhile, the PSi NPs were grafted with the bisphosphonate (BP) molecules for radiolabeling. Thanks to the good chelating ability of BP and homotypic tumor targeting of cancer CCm coating, a novel PSi-based contrast agent (CCm-PEG-89Zr-BP-PSi) was developed for targeted positron emission tomography (PET)/computed tomography (CT) imaging of TNBC. The novel imaging agent showed good radiochemical purity (∼99 %) and stability (∼95 % in PBS and ∼99 % in cell medium after 48 h). Furthermore, the CCm-PEG-89Zr-BP-PSi NPs had efficient homotypic targeting ability in vitro and in vivo for TNBC. These findings demonstrate a versatile biomimetic coating method to prepare novel NPs for tumor-targeted diagnosis.
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Affiliation(s)
- Huang Wen
- Department of Technical Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland
| | - María Gómez Martínez
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, 20014 Donostia-San Sebastián, Spain
| | - Emilia Happonen
- Department of Technical Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland
| | - Jing Qian
- Department of Technical Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland
| | - Vanessa Gómez Vallejo
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, 20014 Donostia-San Sebastián, Spain
| | - Helena Jorge Mendazona
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, 20014 Donostia-San Sebastián, Spain
| | - Kimmo Jokivarsi
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland
| | - Mauro Scaravilli
- Faculty of Medicine and Health Technology, Tampere University, Arvo Ylpön Katu 34, 33520 Tampere, Finland
| | - Leena Latonen
- School of Medicine, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland
| | - Jordi Llop
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, 20014 Donostia-San Sebastián, Spain
| | - Vesa-Pekka Lehto
- Department of Technical Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland.
| | - Wujun Xu
- Department of Technical Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland.
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6
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Qi Q, Shen Q, Geng J, An W, Wu Q, Wang N, Zhang Y, Li X, Wang W, Yu C, Li L. Stimuli-responsive biodegradable silica nanoparticles: From native structure designs to biological applications. Adv Colloid Interface Sci 2024; 324:103087. [PMID: 38278083 DOI: 10.1016/j.cis.2024.103087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/24/2023] [Accepted: 01/05/2024] [Indexed: 01/28/2024]
Abstract
Due to their inherent advantages, silica nanoparticles (SiNPs) have greatly potential applications as bioactive materials in biosensors/biomedicine. However, the long-term and nonspecific accumulation in healthy tissues may give rise to toxicity, thereby impeding their widespread clinical application. Hence, it is imperative and noteworthy to develop biodegradable and clearable SiNPs for biomedical purposes. Recently, the design of multi-stimuli responsive SiNPs to improve degradation efficiency under specific pathological conditions has increased their clinical trial potential as theranostic nanoplatform. This review comprehensively summaries the rational design and recent progress of biodegradable SiNPs under various internal and external stimuli for rapid in vivo degradation and clearance. In addition, the factors that affect the biodegradation of SiNPs are also discussed. We believe that this systematic review will offer profound stimulus and timely guide for further research in the field of SiNP-based nanosensors/nanomedicine.
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Affiliation(s)
- Qianhui Qi
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China; Future Food Laboratory, Innovation Center of Yangtze River Delta, Zhejiang University, Jiaxing 314100, China
| | - Qian Shen
- Key Laboratory of Flexible Electronics (KLOFE) and School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing 211800, China
| | - Jiaying Geng
- Key Laboratory of Flexible Electronics (KLOFE) and School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing 211800, China
| | - Weizhen An
- Key Laboratory of Flexible Electronics (KLOFE) and School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing 211800, China
| | - Qiong Wu
- Key Laboratory of Flexible Electronics (KLOFE) and School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing 211800, China
| | - Nan Wang
- College of Biology and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China
| | - Yu Zhang
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Xue Li
- Institute of Agro-product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Wei Wang
- School of Biological and Chemical Engineering, Zhejiang University of Science and Technology, Hangzhou 310023, China.
| | - Changmin Yu
- Key Laboratory of Flexible Electronics (KLOFE) and School of Flexible Electronics (Future Technologies), Nanjing Tech University, Nanjing 211800, China; State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China.
| | - Lin Li
- The Institute of Flexible Electronics (IFE, Future Technologies), Xiamen University, Xiamen 361005, China.
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7
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Simo C, Salvador C, Andreozzi P, Gomez-Vallejo V, Romero G, Dupin D, Llop J, Moya SE. Positron Emission Tomography Studies of the Biodistribution, Translocation, and Fate of Poly Allyl Amine-Based Carriers for Sirna Delivery by Systemic and Intratumoral Administration. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304326. [PMID: 37537708 DOI: 10.1002/smll.202304326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 07/05/2023] [Indexed: 08/05/2023]
Abstract
Polyamine-based vectors offer many advantages for gene therapy, but they are hampered by a limited knowledge on their biological fate and efficacy for nucleic acid delivery. The 18 F radiolabeled siRNA is complexed with poly(allyl amine) hydrochloride (PAH), PEGylated PAH (PAHPEG ), or oleic acid-modified PAH (PAHOleic ) to form polyplexes, and injected them intravenously into healthy rodents. The biodistribution patterns obtained by positron emission tomography (PET) imaging vary according to the polymer used for complexation. Free siRNA is quickly eliminated through the bladder. PAH and oleic acid modify PAH polyplexes accumulate in the lungs and liver. No elimination through the bladder is observed for PAH and PAHOleic within 2 h after administration. PAHPEG polyplexes accumulate in kidneys and are eliminated through the bladder. Polyplexes prepared with 18 F-labeled oleic acid-modified PAH and non-labeled siRNA show similar biodistribution to those prepared with labeled siRNA, but with more accumulation in the lungs due to the presence of non-complexed polymer. Intravenous administration of PAHOleic polyplexes in tumor models results in a limited availability of siRNA. When PAHOleic polyplexes are administered intratumorally in tumor bearing rodents, ≈40% of the radioactivity is retained in the tumor after 180 min while free siRNA is completely eliminated.
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Affiliation(s)
- Cristina Simo
- Radiochemistry and Nuclear Imaging laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
- Soft Matter Nanotechnology, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
- Department of Radiology, Washington University School of Medicine in St. Louis, St. Louis, MO, 63110, USA
| | - Cristian Salvador
- Soft Matter Nanotechnology, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
- CIDETEC, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián, 20014, Spain
| | - Patrizia Andreozzi
- Consorzio Sistemi a Grande Interfase, Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia 3, FI, Sesto Fiorentino, 50019, Italy
| | - Vanessa Gomez-Vallejo
- Radiochemistry and Nuclear Imaging laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
| | - Gabriela Romero
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, San Antonio, TX, 78249, USA
| | - Damien Dupin
- CIDETEC, Basque Research and Technology Alliance (BRTA), Parque Científico y Tecnológico de Gipuzkoa, Miramon Pasealekua, 196, Donostia-San Sebastián, 20014, Spain
| | - Jordi Llop
- Radiochemistry and Nuclear Imaging laboratory, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
| | - Sergio E Moya
- Soft Matter Nanotechnology, Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 194, Donostia-San Sebastián, 20014, Spain
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8
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Liu Z, Zimpel A, Lächelt U, Pozzi M, Gonzalez MG, Chakraborty I, Wuttke S, Feliu N, Parak WJ. Uptake and Intracellular Fate of Fluorophore Labeled Metal-Organic-Framework (MOF) Nanoparticles. ENVIRONMENT & HEALTH (WASHINGTON, D.C.) 2023; 1:270-277. [PMID: 37881592 PMCID: PMC10594580 DOI: 10.1021/envhealth.3c00075] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/10/2023] [Revised: 08/12/2023] [Accepted: 08/15/2023] [Indexed: 10/27/2023]
Abstract
The uptake and the fate of Zr-based metal-organic-framework nanoparticles labeled with organic fluorophores in HeLa cells has been monitored with fluorescence detection and elemental analysis. The nanoparticles have been selected as a model system of carrier nanoparticles (here Zr-based metal-organic-framework nanoparticles) with integrated cargo molecules (here organic fluorophores), with aze that does not allow for efficient exocytosis, a material which only partly degrades under acidic conditions as present in endosomes/lysosomes, and with limited colloidal stability. Data show that, for Zr-based metal-organic-framework nanoparticles of 40 nm size as investigated here, the number of nanoparticles per cells decreases faster due to particle redistribution upon proliferation than due to nanoparticle exocytosis and that, thus, also for this system, exocytosis is not an efficient pathway for clearance of the nanoparticles from the cells.
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Affiliation(s)
- Ziyao Liu
- Center
for Hybrid Nanostructures, Universität
Hamburg, 22761 Hamburg, Germany
- Key
Laboratory of Biological Nanotechnology of National Health Commission,
Xiangya Hospital, Central South University, Changsha 410008, China
| | - Andreas Zimpel
- Department
of Chemistry and Center for NanoScience (CeNS), LMU Munich, 81377 Munich, Germany
| | - Ulrich Lächelt
- Department
of Pharmacy and Center for NanoScience (CeNS), LMU Munich, 81377 Munich, Germany
- Department
of Pharmaceutical Sciences, University of
Vienna, 1090 Vienna, Austria
| | - Maria Pozzi
- Center
for Hybrid Nanostructures, Universität
Hamburg, 22761 Hamburg, Germany
| | - Marta Gallego Gonzalez
- Center for
Cooperative Research in Biomaterials (CIC BiomaGUNE), Basque Research and Technology Alliance (BRTA), 20014 Donostia-San Sebastián, Spain
| | - Indranath Chakraborty
- Center
for Hybrid Nanostructures, Universität
Hamburg, 22761 Hamburg, Germany
- School of
Nano Science and Technology, Indian Institute
of Technology Kharagpur, Kharagpur 721302, India
| | - Stefan Wuttke
- BCMaterials,
Basque Center for Materials, Applications
and Nanostructures, UPV/EHU
Science Park, 48950 Leioa, Spain
- IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain
| | - Neus Feliu
- Zentrum
für Angewandte Nanotechnologie CAN, Fraunhofer-Institut für Angewandte Polymerforschung IAP, 20146 Hamburg, Germany
| | - Wolfgang J. Parak
- Center
for Hybrid Nanostructures, Universität
Hamburg, 22761 Hamburg, Germany
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9
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Ahmadi M, Emzhik M, Mosayebnia M. Nanoparticles labeled with gamma-emitting radioisotopes: an attractive approach for in vivo tracking using SPECT imaging. Drug Deliv Transl Res 2023; 13:1546-1583. [PMID: 36811810 DOI: 10.1007/s13346-023-01291-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/03/2023] [Indexed: 02/24/2023]
Abstract
Providing accurate molecular imaging of the body and biological process is critical for diagnosing disease and personalizing treatment with the minimum side effects. Recently, diagnostic radiopharmaceuticals have gained more attention in precise molecular imaging due to their high sensitivity and appropriate tissue penetration depth. The fate of these radiopharmaceuticals throughout the body can be traced using nuclear imaging systems, including single-photon emission computed tomography (SPECT) and positron emission tomography (PET) modalities. In this regard, nanoparticles are attractive platforms for delivering radionuclides into targets because they can directly interfere with the cell membranes and subcellular organelles. Moreover, applying radiolabeled nanomaterials can decrease their toxicity concerns because radiopharmaceuticals are usually administrated at low doses. Therefore, incorporating gamma-emitting radionuclides into nanomaterials can provide imaging probes with valuable additional properties compared to the other carriers. Herein, we aim to review (1) the gamma-emitting radionuclides used for labeling different nanomaterials, (2) the approaches and conditions adopted for their radiolabeling, and (3) their application. This study can help researchers to compare different radiolabeling methods in terms of stability and efficiency and choose the best way for each nanosystem.
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Affiliation(s)
- Mahnaz Ahmadi
- Department of Pharmaceutics and Pharmaceutical Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Marjan Emzhik
- Department of Pharmaceutics and Pharmaceutical Nanotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mona Mosayebnia
- Department of Pharmaceutical Chemistry and Radiopharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Niayesh Junction, Vali-E-Asr Ave, Tehran, 14155-6153, Iran.
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10
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Lin J, Shi T, Wang Y, He Z, Mu Z, Cai X, Deng H, Shen J, Liu F. Hybrid Hydrogel Loaded with Chlorhexidine⊂β-CD-MSN Composites as Wound Dressing. Int J Nanomedicine 2023; 18:1725-1740. [PMID: 37025923 PMCID: PMC10072218 DOI: 10.2147/ijn.s401705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/21/2023] [Indexed: 04/03/2023] Open
Abstract
Background Much attention has been paid to sustained drug release and anti-infection in wound management. Hydrogels, which are biocompatible materials, are promising tools for controlled drug release and infective protection during wound healing. However, hydrogels also demonstrate limitations in the highly efficient treatment of wounds because of the diffusion rate. In this work, we explored pH-sensitive hydrogels that enable ultra-long-acting drug release and sustained antibacterial properties. Methods We constructed a hybrid gelatin methacrylate (GelMA) system with sustainable antibacterial properties combining hyaluronic acid (HA)-coated mesoporous silica nanoparticles (MSN), which loaded host-guest complexes of chlorhexidine (CHX) with β-cyclodextrins (β-CD) (CHX⊂CD-MSN@HA@GelMA). The release mechanism of CHX was explored using UV-vis spectra after intermittent diffusion of CHX. The hybrid hydrogels were characterized, and the drug content in terms of the release profile, bacterial inhibition, and in vivo experiments were investigated. Results Except for dual protection from both hydrogels, MSN in the HA improved the drug loading efficiency to promote the local drug concentration. It showed that complicated CHX-loaded MSN releases CHX more gradually and over a longer duration than CHX-loaded MSNs. This demonstrated a 12-day CHX release time and antibacterial activity, primarily attributable to the capacity of β-CD to form an inclusion complex with CHX. Meanwhile, in vivo experiments revealed that the hydrogels safely promote skin wound healing and enhance therapeutic efficacy. Conclusion We constructed pH-sensitive CHX⊂CD-MSN@HA@GelMA hydrogels that enable ultra-long-acting drug release and sustained antibacterial properties. The combination of β-CD and MSN would be better suited to release a reduced rate of active molecules over time (slow delivery), making them great candidates for wound dressing anti-infection materials.
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Affiliation(s)
- Jian Lin
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Tianpeng Shi
- Department of Stomatology, PLA Strategic Support Force Medical Center, Beijing, People’s Republic of China
| | - Yi Wang
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Zhiqi He
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Zhixiang Mu
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Xiaojun Cai
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
| | - Hui Deng
- School & Hospital of Stomatology, Wenzhou Medical University, Wenzhou, People’s Republic of China
- Correspondence: Hui Deng; Fen Liu, Email ;
| | - Jianliang Shen
- State Key Laboratory of Ophthalmology, Optometry and Vision Science, School of Ophthalmology & Optometry, School of Biomedical Engineering, Wenzhou Medical University, Wenzhou, People’s Republic of China
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, People’s Republic of China
- Department of Regenerative Medicine, Vision, and Brain Health, Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision, and Brain Health), Wenzhou, People’s Republic of China
| | - Fen Liu
- Department of Histology and Embryology, Wenzhou Medical University, Wenzhou, People’s Republic of China
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11
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Ramírez MDLÁ, Bindini E, Moretti P, Soler Illia GJAA, Amenitsch H, Andreozzi P, Ortore MG, Moya SE. Impact of PEGylation on the degradation and pore organization in mesoporous silica nanoparticles: A study of the inner mesoporous structure in physiologically relevant ionic conditions. Colloids Surf B Biointerfaces 2022; 219:112797. [PMID: 36063718 DOI: 10.1016/j.colsurfb.2022.112797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 08/07/2022] [Accepted: 08/21/2022] [Indexed: 10/31/2022]
Abstract
The degradation of mesoporous silica nanoparticles (MSNs) in the biological milieu due to silica hydrolysis plays a fundamental role for the delivery of encapsulated drugs and therapeutics. However, little is known on the evolution of the pore arrangement in the MSNs in biologically relevant conditions. Small Angle X-ray scattering (SAXS) studies were performed on unmodified and PEGylated MSNs with a MCM-48 pore structure and average sizes of 140 nm, exposed to simulated body fluid solution (SBF) at pH 7.4 for different time intervals from 30 min to 24 h. Experiments were performed with silica concentrations below, at and over 0.14 mg/mL, the saturation concentration of silica in water at physiological temperature. At silica concentrations of 1 mg/mL (oversaturation), unmodified MSNs show variation in interpore distances over 6 h exposure to SBF, remaining constant thereafter. A decrease in radius of gyration is observed over the same time. Mesoporosity and radius of gyration of unmodified MSNs remain then unchanged up to 24 h. PEGylated MSNs at 1 mg/mL concentration show a broader diffraction peak but no change in the position of the peak is observed following 24 h exposure to SBF. PEGylated MSNs at 0.01 mg/mL show no diffraction peaks already after 30 min exposure to SBF, while at 0.14 mg/mL a small diffraction peak is present after 30 min exposure but disappears after 1 h.
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Affiliation(s)
- María de Los Ángeles Ramírez
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain; Instituto de Nanosistemas, UNSAM, CONICET, Avenida 25 de Mayo 1021, San Martín, 1650 Buenos Aires, Argentina
| | - Elisa Bindini
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain
| | - Paolo Moretti
- Department of Life and Environmental Science, Marche Polytechnic University, via Brecce bianche, I-60131 Ancona, Italy
| | - Galo J A A Soler Illia
- Instituto de Nanosistemas, UNSAM, CONICET, Avenida 25 de Mayo 1021, San Martín, 1650 Buenos Aires, Argentina.
| | - Heinz Amenitsch
- Institute of Inorganic Chemistry, Graz University of Technology, Austria
| | - Patrizia Andreozzi
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain; Department of Chemistry 'Ugo Schiff', University of Florence, Via della Lastruccia 3/13, Sesto Fiorentino, Florence 50019, Italy.
| | - Maria Grazia Ortore
- Department of Life and Environmental Science, Marche Polytechnic University, via Brecce bianche, I-60131 Ancona, Italy.
| | - Sergio E Moya
- Soft Matter Nanotechnology Group, CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), Paseo Miramón 182, 20014 San Sebastián, Guipúzcoa, Spain.
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12
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Wen H, Närvänen A, Jokivarsi K, Poutiainen P, Xu W, Lehto VP. A robust approach to make inorganic nanovectors biotraceable. Int J Pharm 2022; 624:122040. [PMID: 35902052 DOI: 10.1016/j.ijpharm.2022.122040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 07/04/2022] [Accepted: 07/18/2022] [Indexed: 11/29/2022]
Abstract
Nuclear medicine imaging plays an important role in nanomedicine. However, it is still challenging to develop a versatile platform to make the nonviral nanovectors used in cancer therapy biotraceable. In the present study, a robust approach to radiolabel inorganic nanovectors for SPECT and PET imaging was developed. The approach was based on the bisphosphonates (BP) conjugated on the nanovector, mesoporous silicon (PSi) nanoparticles. BP served as an efficient chelator for various radionuclides. For both of the 99mTc and 68Ga radionuclides utilized, the radiochemical purity and radiochemical yield were ∼99% and ∼90%, respectively. Because of the short decay time of the radionuclides, an easy, fast and effective PEGylation method was developed to improve the residence time in systemic circulation. Both PEG-99mTc-BP-PSi and PEG-68Ga-BP-PSi NPs, where PEGylation was performed after the labeling, had excellent colloidal and radiochemical stability in vitro. The plain particles without PEGylation accumulated fast in the reticuloendothelial system organs upon intravenous administration, while PEGylation prolonged the residence time of the particles in systemic circulation. Overall, the developed approach proved to be applicable for labeling nonviral nanovectors with various radionuclides easily and robustly. Considering the nature of mesoporous nanoparticles, the approach does not hamper the addition of other functionalities on the vector, nor its capability to carry high payloads.
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Affiliation(s)
- Huang Wen
- Department of Applied Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland
| | - Ale Närvänen
- School of Pharmacy, University of Eastern Finland, Yliopistonranta 1B, 70211 Kuopio, Finland
| | - Kimmo Jokivarsi
- A.I. Virtanen Institute for Molecular Sciences, University of Eastern Finland, Neulaniementie 2, 70211 Kuopio, Finland
| | - Pekka Poutiainen
- Kuopio University Hospital, University of Eastern Finland, Puijonlaaksontie 2, 70210 Kuopio, Finland
| | - Wujun Xu
- Department of Applied Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland.
| | - Vesa-Pekka Lehto
- Department of Applied Physics, University of Eastern Finland, Yliopistonranta 1F, 70211 Kuopio, Finland.
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13
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Huang Y, Li P, Zhao R, Zhao L, Liu J, Peng S, Fu X, Wang X, Luo R, Wang R, Zhang Z. Silica nanoparticles: Biomedical applications and toxicity. Biomed Pharmacother 2022; 151:113053. [PMID: 35594717 DOI: 10.1016/j.biopha.2022.113053] [Citation(s) in RCA: 65] [Impact Index Per Article: 32.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Revised: 04/24/2022] [Accepted: 04/26/2022] [Indexed: 11/19/2022] Open
Abstract
Silica nanoparticles (SiNPs) are composed of silicon dioxide, the most abundant compound on Earth, and are used widely in many applications including the food industry, synthetic processes, medical diagnosis, and drug delivery due to their controllable particle size, large surface area, and great biocompatibility. Building on basic synthetic methods, convenient and economical strategies have been developed for the synthesis of SiNPs. Numerous studies have assessed the biomedical applications of SiNPs, including the surface and structural modification of SiNPs to target various cancers and diagnose diseases. However, studies on the in vitro and in vivo toxicity of SiNPs remain in the exploratory stage, and the toxicity mechanisms of SiNPs are poorly understood. This review covers recent studies on the biomedical applications of SiNPs, including their uses in drug delivery systems to diagnose and treat various diseases in the human body. SiNP toxicity is discussed in terms of the different systems of the human body and the individual organs in those systems. This comprehensive review includes both fundamental discoveries and exploratory progress in SiNP research that may lead to practical developments in the future.
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Affiliation(s)
- Yanmei Huang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Peng Li
- Department of Nephrology, Yantai Yuhuangding Hospital, Qingdao University, Yantai 264005, Shandong, PR China
| | - Ruikang Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Laien Zhao
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Jia Liu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Shengjun Peng
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Xiaoxuan Fu
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Xiaojie Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Rongrui Luo
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Rong Wang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China
| | - Zhuhong Zhang
- School of Pharmacy, Key Laboratory of Molecular Pharmacology and Drug Evaluation (Yantai University), Ministry of Education, Collaborative Innovation Center of Advanced Drug Delivery System and Biotech Drugs in Universities of Shandong, Yantai University, Yantai 264005, PR China.
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14
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Pan Y, Tang W, Fan W, Zhang J, Chen X. Development of nanotechnology-mediated precision radiotherapy for anti-metastasis and radioprotection. Chem Soc Rev 2022; 51:9759-9830. [DOI: 10.1039/d1cs01145f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Radiotherapy (RT), including external beam RT and internal radiation therapy, uses high-energy ionizing radiation to kill tumor cells.
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Affiliation(s)
- Yuanbo Pan
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou, 310009, Zhejiang, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, 310009, China
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore 119074, Singapore
| | - Wei Tang
- Departments of Pharmacy and Diagnostic Radiology, Nanomedicine Translational Research Program, Faculty of Science and Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117544, Singapore
| | - Wenpei Fan
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, Center of Advanced Pharmaceuticals and Biomaterials, China Pharmaceutical University, Nanjing, 210009, China
| | - Jianmin Zhang
- Department of Neurosurgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310009, China
- Key Laboratory of Precise Treatment and Clinical Translational Research of Neurological Diseases, Hangzhou, 310009, Zhejiang, China
- Clinical Research Center for Neurological Diseases of Zhejiang Province, Hangzhou, 310009, China
| | - Xiaoyuan Chen
- Departments of Diagnostic Radiology, Surgery, Chemical and Biomolecular Engineering, and Biomedical Engineering, Yong Loo Lin School of Medicine and College of Design and Engineering, National University of Singapore, Singapore 119074, Singapore
- Clinical Imaging Research Centre, Centre for Translational Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore
- Nanomedicine Translational Research Program, NUS Center for Nanomedicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Singapore
- Institute of Molecular and Cell Biology, Agency for Science, Technology, and Research (A*STAR), 61 Biopolis Drive, Proteos, Singapore, 138673, Singapore
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15
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Perrigue PM, Murray RA, Mielcarek A, Henschke A, Moya SE. Degradation of Drug Delivery Nanocarriers and Payload Release: A Review of Physical Methods for Tracing Nanocarrier Biological Fate. Pharmaceutics 2021; 13:770. [PMID: 34064155 PMCID: PMC8224277 DOI: 10.3390/pharmaceutics13060770] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/11/2021] [Accepted: 05/12/2021] [Indexed: 12/13/2022] Open
Abstract
Nanoformulations offer multiple advantages over conventional drug delivery, enhancing solubility, biocompatibility, and bioavailability of drugs. Nanocarriers can be engineered with targeting ligands for reaching specific tissue or cells, thus reducing the side effects of payloads. Following systemic delivery, nanocarriers must deliver encapsulated drugs, usually through nanocarrier degradation. A premature degradation, or the loss of the nanocarrier coating, may prevent the drug's delivery to the targeted tissue. Despite their importance, stability and degradation of nanocarriers in biological environments are largely not studied in the literature. Here we review techniques for tracing the fate of nanocarriers, focusing on nanocarrier degradation and drug release both intracellularly and in vivo. Intracellularly, we will discuss different fluorescence techniques: confocal laser scanning microscopy, fluorescence correlation spectroscopy, lifetime imaging, flow cytometry, etc. We also consider confocal Raman microscopy as a label-free technique to trace colocalization of nanocarriers and drugs. In vivo we will consider fluorescence and nuclear imaging for tracing nanocarriers. Positron emission tomography and single-photon emission computed tomography are used for a quantitative assessment of nanocarrier and payload biodistribution. Strategies for dual radiolabelling of the nanocarriers and the payload for tracing carrier degradation, as well as the efficacy of the payload delivery in vivo, are also discussed.
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Affiliation(s)
- Patrick M. Perrigue
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland; (P.M.P.); (A.M.); (A.H.)
| | - Richard A. Murray
- Instituto Biofisika (UPV/EHU, CSIC), Barrio Sarriena S/N, 48940 Leioa, Spain;
| | - Angelika Mielcarek
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland; (P.M.P.); (A.M.); (A.H.)
| | - Agata Henschke
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland; (P.M.P.); (A.M.); (A.H.)
| | - Sergio E. Moya
- NanoBioMedical Centre, Adam Mickiewicz University, Wszechnicy Piastowskiej 3, 61-614 Poznan, Poland; (P.M.P.); (A.M.); (A.H.)
- Center for Cooperative Research in Biomaterials (CIC biomaGUNE), Basque Research and Technology Alliance (BRTA), Paseo de Miramon 182, 20014 Donostia San Sebastián, Spain
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