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Zámbó D, Kovács D, Südi G, Zolnai Z, Deák A. Composite ligand shells on gold nanoprisms - an ensemble and single particle study. RSC Adv 2023; 13:30696-30703. [PMID: 37869380 PMCID: PMC10585614 DOI: 10.1039/d3ra05548e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/11/2023] [Indexed: 10/24/2023] Open
Abstract
The attachment of thiolated molecules onto gold surfaces is one of the most extensively used and robust ligand exchange approaches to exploit the nanooptical features of nanoscale and nanostructured plasmonic materials. In this work, the impact of thiol adsorption on the optical properties of wet-chemically synthesized gold nanoprisms is studied both at the ensemble and single particle level to investigate the build-up of more complex ligand layers. Two prototypical ligands with different lengths have been investigated ((16-mercaptohexadecyl)trimethylammonium bromide - MTAB and thiolated polyethylene glycol - mPEG-SH). From ensemble experiments it is found that composite ligand layers are obtained by the sequential addition of the two thiols, and an island-like surface accumulation of the molecules can be anticipated. The single particle experiment derived chemical interface damping and resonance energy changes further support this and show additionally that when the two thiols are used simultaneously, a higher density, intermixed layer is formed. Hence, when working with more than a single type of ligand during surface modification, sequential adsorption is preferred for the combination of accessible essential surface functionalities, whereas for high overall loading the simultaneous use of the different ligand types is favourable.
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Affiliation(s)
- Dániel Zámbó
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
| | - Dávid Kovács
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
- Budapest University of Technology and Economics, Department of Physical Chemistry and Materials Science Budafoki Str. 6-8 Budapest 1117 Hungary
| | - Gergely Südi
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
- Budapest University of Technology and Economics, Department of Physical Chemistry and Materials Science Budafoki Str. 6-8 Budapest 1117 Hungary
| | - Zsolt Zolnai
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
| | - András Deák
- Centre for Energy Research Konkoly-ThegeM. Str. 29-33 Budapest 1121 Hungary
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2
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Suarasan S, Campu A, Vulpoi A, Banciu M, Astilean S. Assessing the Efficiency of Triangular Gold Nanoparticles as NIR Photothermal Agents In Vitro and Melanoma Tumor Model. Int J Mol Sci 2022; 23:ijms232213724. [PMID: 36430201 PMCID: PMC9695152 DOI: 10.3390/ijms232213724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/24/2022] [Accepted: 11/04/2022] [Indexed: 11/09/2022] Open
Abstract
Photothermal therapy (PTT) is gaining a lot of interest as a cancer treatment option with minimal side effects due to the efficient photothermal agents employed. They are based on nanomaterials that, upon laser irradiation, absorb photon energy and convert it into heat to induce hyperthermia, which destroys the cancer cells. Here, the unique light-to-heat conversion features of three different gold nanotriangular nanoparticles (AuNTs) are evaluated with respect to their absorption properties to select the most efficient nanoheater with the highest potential to operate as an efficient photothermal agent. AuNTs with LSPR response in- and out- of resonance with the 785 nm near-infrared (NIR) excitation wavelength are investigated. Upon 15 min laser exposure, the AuNTs that exhibit a plasmonic response in resonance with the 785 nm laser line show the highest photothermal conversion efficacy of 80%, which correlates with a temperature increase of 22 °C. These photothermal properties are well-preserved in agarose-based skin biological phantoms that mimic the melanoma tumoral tissue and surrounding healthy tissue. Finally, in vitro studies on B16.F10 melanoma cells prove by fluorescence staining and MTT assay that the highest phototoxic effect after NIR laser exposure is induced by AuNTs with LSPR response in resonance with the employed laser line, thus demonstrating their potential implementation as efficient photothermal agents in PTT.
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Affiliation(s)
- Sorina Suarasan
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, 42 T. Laurian Str., 400271 Cluj-Napoca, Romania
- Correspondence:
| | - Andreea Campu
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, 42 T. Laurian Str., 400271 Cluj-Napoca, Romania
| | - Adriana Vulpoi
- Nanostructured Materials and Bio-Nano-Interfaces Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, 42 T. Laurian Str., 400271 Cluj-Napoca, Romania
| | - Manuela Banciu
- Center of Systems Biology, Biodiversity and Bioresources, Department of Molecular Biology and Biotechnology, Faculty of Biology and Geology, Babes-Bolyai University, 5-7 Clinicilor Str., 400006 Cluj-Napoca, Romania
| | - Simion Astilean
- Nanobiophotonics and Laser Microspectroscopy Center, Interdisciplinary Research Institute in Bio-Nano-Sciences, Babes-Bolyai University, 42 T. Laurian Str., 400271 Cluj-Napoca, Romania
- Department of Biomolecular Physics, Faculty of Physics, Babes-Bolyai University, 1 M. Kogalniceanu Str., 400084 Cluj-Napoca, Romania
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3
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Alle M, Sharma G, Lee SH, Kim JC. Next-generation engineered nanogold for multimodal cancer therapy and imaging: a clinical perspectives. J Nanobiotechnology 2022; 20:222. [PMID: 35778747 PMCID: PMC9250257 DOI: 10.1186/s12951-022-01402-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/28/2022] [Indexed: 12/12/2022] Open
Abstract
Cancer is one of the significant threats to human life. Although various latest technologies are currently available to treat cancer, it still accounts for millions of death each year worldwide. Thus, creating a need for more developed and novel technologies to combat this deadly condition. Nanoparticles-based cancer therapeutics have offered a promising approach to treat cancer effectively while minimizing adverse events. Among various nanoparticles, nanogold (AuNPs) are biocompatible and have proved their efficiency in treating cancer because they can reach tumors via enhanced permeability and retention effect. The size and shape of the AuNPs are responsible for their diverse therapeutic behavior. Thus, to modulate their therapeutic values, the AuNPs can be synthesized in various shapes, such as spheres, cages, flowers, shells, prisms, rods, clusters, etc. Also, attaching AuNPs with single or multiple targeting agents can facilitate the active targeting of AuNPs to the tumor tissue. The AuNPs have been much explored for photothermal therapy (PTT) to treat cancer. In addition to PTT, AuNPs-based nanoplatforms have been investigated for combinational multimodal therapies in the last few years, including photodynamic therapy, chemotherapy, radiotherapy, immunotherapy, etc., to ablate cancer cells. Thus, the present review focuses on the recent advancements in the functionalization of AuNPs-based nanoconstructs for cancer imaging and therapy using combinatorial multimodal approaches to treat various cancers.
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Affiliation(s)
- Madhusudhan Alle
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Garima Sharma
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Seung-Hwan Lee
- Institute of Forest Science, Kangwon National University, Chuncheon, 24341, Republic of Korea.
- Department of Forest Biomaterials Engineering, College of Forest and Environmental Sciences, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Jin-Chul Kim
- Department of Biomedical Science & Institute of Bioscience and Biotechnology, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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Minh Ngo H, Drobnyh E, Sukharev M, Khuong Vo Q, Zyss J, Ledoux‐Rak I. High Yield Synthesis and Quadratic Nonlinearities of Gold Nanoprisms in Solution: the Role of Corner Sharpness. Isr J Chem 2022. [DOI: 10.1002/ijch.202200009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Hoang Minh Ngo
- Laboratoire Lumière, Matière et Interfaces UMR 8537 Ecole Normale Supérieure Paris-Saclay CentraleSupélec CNRS Université Paris-Saclay 91190 Gif-sur-Yvette France
| | - Elena Drobnyh
- College of Integrative Science and Arts Arizona State University Mesa Arizona 85212 USA
| | - Maxim Sukharev
- College of Integrative Science and Arts Arizona State University Mesa Arizona 85212 USA
- Department of Physics Arizona State University Tempe Arizona 85287 USA
| | - Quoc Khuong Vo
- Faculty of Chemistry Ho Chi Minh City University of Science Vietnam National University 227 Nguyen Van Cu Street, Ward 4, District 5 Ho Chi Minh City 70000 Vietnam
| | - Joseph Zyss
- Laboratoire Lumière, Matière et Interfaces UMR 8537 Ecole Normale Supérieure Paris-Saclay CentraleSupélec CNRS Université Paris-Saclay 91190 Gif-sur-Yvette France
| | - Isabelle Ledoux‐Rak
- Laboratoire Lumière, Matière et Interfaces UMR 8537 Ecole Normale Supérieure Paris-Saclay CentraleSupélec CNRS Université Paris-Saclay 91190 Gif-sur-Yvette France
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5
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Lebepe TC, Parani S, Ncapayi V, Maluleke R, Mbaz GIM, Fanoro OT, Varghese JR, Komiya A, Kodama T, Oluwafemi OS. Graphene Oxide-Gold Nanorods Nanocomposite-Porphyrin Conjugate as Promising Tool for Cancer Phototherapy Performance. Pharmaceuticals (Basel) 2021; 14:ph14121295. [PMID: 34959695 PMCID: PMC8706362 DOI: 10.3390/ph14121295] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/27/2021] [Accepted: 12/01/2021] [Indexed: 12/26/2022] Open
Abstract
The cancer mortality rate has increased, and conventional cancer treatments are known for having many side effects. Therefore, it is imperative to find a new therapeutic agent or modify the existing therapeutic agents for better performance and efficiency. Herein, a synergetic phototherapeutic agent based on a combination of photothermal and photodynamic therapy is proposed. The phototherapeutic agent consists of water-soluble cationic porphyrin (5,10,15,20-tetrakis(N-methylpyridinium-3-yl)porphyrin, TMePyP), and gold nanorods (AuNRs) anchored on graphene-oxide (GO) sheet. The TMePyP was initially synthesized by Adler method, followed by methylation, while GO and AuNRs were synthesized using Hummer’s and seed-mediated methods, respectively. The structural and optical properties of TMePyP were confirmed using UV-Vis, zeta analyzer, PL, FTIR and NMR. The formation of both GO and AuNRs was confirmed by UV-Vis-NIR, FTIR, TEM and zeta analyzer. TMePyP and AuNRs were anchored on GO to form GO@AuNRs-TMePyP nanocomposite. The as-synthesized nanocomposite was stable in RPMI and PBS medium, and, on irradiation, produced high heat than the bare AuNRs, with high photothermal efficiency. In addition, the nanocomposite produced higher singlet oxygen than TMePyP with high biocompatibility in the absence of light. These results indicated that the as-synthesized nanocomposite is a promising dual photodynamic and photothermal agent for cancer therapy.
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Affiliation(s)
- Thabang Calvin Lebepe
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Sundararajan Parani
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Vuyelwa Ncapayi
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Rodney Maluleke
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Grace It Mwad Mbaz
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Olufunto Tolulope Fanoro
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Jose Rajendran Varghese
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
| | - Atsuki Komiya
- Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan;
| | - Tetsuya Kodama
- Graduate School of Biomedical Engineering, Tohoku University, Sendai 980-8575, Japan;
| | - Oluwatobi Samuel Oluwafemi
- Department of Chemical Science, University of Johannesburg, Johannesburg 2028, South Africa; (T.C.L.); (S.P.); (V.N.); (R.M.); (G.I.M.M.); (J.R.V.)
- Centre for Nanomaterials Sciences Research, University of Johannesburg, Johannesburg 2028, South Africa;
- Correspondence:
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Oladipo AO, Lebepe TC, Ncapayi V, Tsolekile N, Parani S, Songca SP, Mori S, Kodama T, Oluwafemi OS. The Therapeutic Effect of Second Near-Infrared Absorbing Gold Nanorods on Metastatic Lymph Nodes via Lymphatic Delivery System. Pharmaceutics 2021; 13:pharmaceutics13091359. [PMID: 34575435 PMCID: PMC8466320 DOI: 10.3390/pharmaceutics13091359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 08/06/2021] [Accepted: 08/10/2021] [Indexed: 11/17/2022] Open
Abstract
Photothermal therapy has been established recently as a non-invasive treatment protocol for cancer metastatic lymph nodes. Although this treatment approach shows efficient tumour ablation towards lymph node metastasis, the monitoring and reporting of treatment progress using the lymphatic delivery channel still need to be explored. Herein, we investigated the anti-tumour effect of pegylated gold nanorods with a high aspect ratio (PAuNRs) delivered via the lymphatic route in a mouse model. In this study, breast carcinoma (FM3A-Luc) cells were inoculated in the subiliac lymph node (SiLN) to induce metastasis in the proper axillary lymph node (PALN). The treatment was initiated by injecting the PAuNRs into the accessory axillary lymph node (AALN) after tumour metastasis was confirmed in the PALN followed by external NIR laser irradiation under a temperature-controlled cooling system. The anti-tumour impact of the treatment was evaluated using an in vivo bioluminescence imaging system (IVIS). The results showed a time-dependent reduction in tumour activity with significant treatment response. Tumour growth was inhibited in all mice treated with PAuNRs under laser irradiation; results were statistically significant (** p < 0.01) even after treatment was concluded on day 3. We believe that this non-invasive technique would provide more information on the dynamics of tumour therapy using the lymphatically administered route in preclinical studies.
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Affiliation(s)
- Adewale O. Oladipo
- Department of Chemical Sciences, University of Johannesburg Doornfontein Campus, Johannesburg 2028, South Africa; (A.O.O.); (T.C.L.); (V.N.); (N.T.); (S.P.)
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg 2028, South Africa
| | - Thabang C. Lebepe
- Department of Chemical Sciences, University of Johannesburg Doornfontein Campus, Johannesburg 2028, South Africa; (A.O.O.); (T.C.L.); (V.N.); (N.T.); (S.P.)
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg 2028, South Africa
| | - Vuyelwa Ncapayi
- Department of Chemical Sciences, University of Johannesburg Doornfontein Campus, Johannesburg 2028, South Africa; (A.O.O.); (T.C.L.); (V.N.); (N.T.); (S.P.)
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg 2028, South Africa
| | - Ncediwe Tsolekile
- Department of Chemical Sciences, University of Johannesburg Doornfontein Campus, Johannesburg 2028, South Africa; (A.O.O.); (T.C.L.); (V.N.); (N.T.); (S.P.)
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg 2028, South Africa
| | - Sundararajan Parani
- Department of Chemical Sciences, University of Johannesburg Doornfontein Campus, Johannesburg 2028, South Africa; (A.O.O.); (T.C.L.); (V.N.); (N.T.); (S.P.)
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg 2028, South Africa
| | - Sandile P. Songca
- Department of Chemistry, University of KwaZulu-Natal, Private Bag X 54001, Durban 4000, South Africa;
| | - Shiro Mori
- Graduate School of Biomedical Engineering, Tohoku University, 4-1 Seiryo, Aoba, Sendai 980-8575, Japan;
- Department of Oral and Maxillofacial Surgery, Tohoku University Hospital, 1-1 Seiryo, Aoba, Sendai 980-8575, Japan
| | - Tetsuya Kodama
- Graduate School of Biomedical Engineering, Tohoku University, 4-1 Seiryo, Aoba, Sendai 980-8575, Japan;
- Correspondence: (T.K.); (O.S.O.)
| | - Oluwatobi S. Oluwafemi
- Department of Chemical Sciences, University of Johannesburg Doornfontein Campus, Johannesburg 2028, South Africa; (A.O.O.); (T.C.L.); (V.N.); (N.T.); (S.P.)
- Centre for Nanomaterials Science Research, University of Johannesburg, Johannesburg 2028, South Africa
- Correspondence: (T.K.); (O.S.O.)
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Guo X, Lie Q, Liu Y, Jia Z, Gong Y, Yuan X, Liu J. Multifunctional Selenium Quantum Dots for the Treatment of Alzheimer's Disease by Reducing Aβ-Neurotoxicity and Oxidative Stress and Alleviate Neuroinflammation. ACS APPLIED MATERIALS & INTERFACES 2021; 13:30261-30273. [PMID: 34169710 DOI: 10.1021/acsami.1c00690] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
At present, the complex pathogenesis, the difficult-to-overcome blood-brain barrier (BBB), the development of the disease course which cannot be prevented, and other problems are serious challenges in the treatment of Alzheimer's disease (AD). In order to enhance the therapeutic effect of drugs through BBB, we synthesized simple and easy-to-obtain selenium quantum dots (SeQDs), with a multitarget therapeutic effect. This new type of SeQDs has an ultrasmall size and can quickly penetrate the BBB. According to the fluorescence characteristics of SeQDs, we can diagnose and track AD. The experimental results show that SeQDs have strong free-radical scavenging activity, protect cells from oxidative stress induced by different stimuli, and show broad-spectrum antioxidant activity. The SeQDs can not only effectively inhibit Aβ aggregation and significantly reduce Aβ-mediated cytotoxicity, thus preventing AD cascade reaction, but also effectively reduce tau protein phosphorylation by down-regulating PHF1 and CP13 and further reduce oxidative stress, restore mitochondrial functions, and maintain nerve cell stability and protect nerve cells from oxidative stress. In vivo studies demonstrate that SeQDs can continuously accumulate in the brain after rapid passage of BBB and can quickly alleviate AD, significantly improve the memory impairment of AD mice, and improve their learning and memory ability. Therefore, the use of SeQDs in the treatment of AD has great advantages compared with traditional single-target drugs and provides a new direction for the combination of prevention and treatment of neurodegenerative diseases.
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Affiliation(s)
- Xian Guo
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Qiaoshan Lie
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Yanan Liu
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
- College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China
| | - Zhi Jia
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Youcong Gong
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Xiaoyu Yuan
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
| | - Jie Liu
- College of Chemistry and Materials Science, Jinan University, Guangzhou 510632, China
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Farkaš B, de Leeuw NH. A Perspective on Modelling Metallic Magnetic Nanoparticles in Biomedicine: From Monometals to Nanoalloys and Ligand-Protected Particles. MATERIALS (BASEL, SWITZERLAND) 2021; 14:3611. [PMID: 34203371 PMCID: PMC8269646 DOI: 10.3390/ma14133611] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 06/17/2021] [Accepted: 06/21/2021] [Indexed: 12/24/2022]
Abstract
The focus of this review is on the physical and magnetic properties that are related to the efficiency of monometallic magnetic nanoparticles used in biomedical applications, such as magnetic resonance imaging (MRI) or magnetic nanoparticle hyperthermia, and how to model these by theoretical methods, where the discussion is based on the example of cobalt nanoparticles. Different simulation systems (cluster, extended slab, and nanoparticle models) are critically appraised for their efficacy in the determination of reactivity, magnetic behaviour, and ligand-induced modifications of relevant properties. Simulations of the effects of nanoscale alloying with other metallic phases are also briefly reviewed.
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Affiliation(s)
- Barbara Farkaš
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK;
| | - Nora H. de Leeuw
- School of Chemistry, Cardiff University, Cardiff CF10 3AT, UK;
- School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
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9
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Oladipo AO, Unuofin JO, Iku SII, Nkambule TTI, Mamba BB, Msagati TAM. Bimetallic Au@Pd nanodendrite system incorporating multimodal intracellular imaging for improved doxorubicin antitumor efficiency. Int J Pharm 2021; 602:120661. [PMID: 33933638 DOI: 10.1016/j.ijpharm.2021.120661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/23/2021] [Accepted: 04/26/2021] [Indexed: 11/19/2022]
Abstract
The sufficient accumulation of drugs is crucial for efficient treatment in a complex tumor microenvironment. Drug delivery systems (DDS) with high surface area and selective cytotoxicity present a novel approach to mitigate insufficient drug loading for improved therapeutic response. Herein, a doxorubicin-conjugated bimetallic gold-core palladium-shell nanocarrier with multiple dense arrays of branches (Au@PdNDs.PEG/DOX) was characterized and its efficacy against breast adenocarcinoma (MCF-7) and lung adenocarcinoma (A549) cells were evaluated. Enhanced darkfield and hyperspectral imaging (HSI) microscopy were used to study the intracellular uptake and accumulation of the DOX-loaded nanodendrites A fascinating data from a 3D-CytoViva fluorescence imaging technique provided information about the dynamics of localization and distribution of the nanocarrier. In vitro cytotoxicity assays indicated that Au@PdNDs.PEG/DOX inhibited the proliferative effects of MCF-7 cells at equivalent IC50 dosage compared to DOX alone. The nanocarrier triggered higher induction of apoptosis proved by a time-dependent phosphatidylserine V release, cell cycle arrest, and flow cytometry analysis. Moreover, the cell cycle phase proportion increase suggests that the enhanced apoptotic effect induced by Au@PdNDs.PEG/DOX was via a G2/M phase arrest. Thus, this study demonstrated the potential of dendritic nanoparticles to improve DOX therapeutic efficiency and plasmonic-mediated intracellular imaging as a suitable theranostic platform for deployment in nanomedicine.
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Affiliation(s)
- Adewale O Oladipo
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa.
| | - Jeremiah O Unuofin
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Solange I I Iku
- Department of Life and Consumer Sciences, College of Agriculture and Environmental Sciences, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Thabo T I Nkambule
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Bhekie B Mamba
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa
| | - Titus A M Msagati
- Institute for Nanotechnology and Water Sustainability (iNanoWS), College of Science, Engineering and Technology, University of South Africa, Science Park Florida, Johannesburg 1710, South Africa.
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10
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Time Optimization of Seed-Mediated Gold Nanotriangle Synthesis Based on Kinetic Studies. NANOMATERIALS 2021; 11:nano11041049. [PMID: 33923968 PMCID: PMC8073722 DOI: 10.3390/nano11041049] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/14/2021] [Accepted: 04/16/2021] [Indexed: 12/19/2022]
Abstract
The synthesis of shape-anisotropic plasmonic nanoparticles such as gold nanotriangles is of increasing interest. These particles have a high potential for applications due to their notable optical properties. A key challenge of the synthesis is usually the low reproducibility. Even the optimized seed-based methods often lack in the synthesis yield or are labor- and time-consuming. In this work, a seed-mediated synthesis with high reproducibility is replicated in order to determine the necessary reaction time for each step. Online monitoring of the reaction mixtures by UV–VIS spectroscopy is used as a powerful tool to track the evolution of the synthesis. The kinetics of the individual stages is elucidated by real-time investigations. As a consequence, the complete synthesis could be optimized and can now be realized in a single day instead of three without any loss in the resulting sample quality.
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11
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Maturi M, Locatelli E, Sambri L, Tortorella S, Šturm S, Kostevšek N, Comes Franchini M. Synthesis of Ultrasmall Single-Crystal Gold-Silver Alloy Nanotriangles and Their Application in Photothermal Therapy. NANOMATERIALS 2021; 11:nano11040912. [PMID: 33916739 PMCID: PMC8066084 DOI: 10.3390/nano11040912] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 12/12/2022]
Abstract
Photothermal therapy has always been a very attractive anti-cancer strategy, drawing a lot of attention thanks to its excellent performance as a non-invasive and pretty safe technique. Lately, nanostructures have become the main characters of the play of cancer therapy due to their ability to absorb near-infrared radiation and efficient light-to-heat conversion. Here we present the synthesis of polyethylene glycol (PEG)-stabilized hybrid ultrasmall (<20 nm) gold-silver nanotriangles (AuAgNTrs) and their application in photothermal therapy. The obtained AuAgNTrs were deeply investigated using high-resolution transmission electron microscopy (HR-TEM). The cell viability assay was performed on U-87 glioblastoma multiforme cell model. Excellent photothermal performance of AuAgNTrs upon irradiation with NIR laser was demonstrated in suspension and in vitro, with >80% cell viability decrease already after 10 min laser irradiation with a laser power P = 3W/cm2 that was proved to be harmless to the control cells. Moreover, a previous cell viability test had shown that the nanoparticles themselves were reasonably biocompatible: without irradiation cell viability remained high. Herein, we show that our hybrid AuAgNTrs exhibit very exciting potential as nanostructures for hyperthermia cancer therapy, mostly due to their easy synthesis protocol, excellent cell compatibility and promising photothermal features.
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Affiliation(s)
- Mirko Maturi
- Department of Industrial Chemistry Toso Montanari, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; (M.M.); (E.L.); (L.S.); (S.T.)
| | - Erica Locatelli
- Department of Industrial Chemistry Toso Montanari, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; (M.M.); (E.L.); (L.S.); (S.T.)
| | - Letizia Sambri
- Department of Industrial Chemistry Toso Montanari, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; (M.M.); (E.L.); (L.S.); (S.T.)
| | - Silvia Tortorella
- Department of Industrial Chemistry Toso Montanari, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; (M.M.); (E.L.); (L.S.); (S.T.)
| | - Sašo Šturm
- Department for Nanostructured Materials, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia;
| | - Nina Kostevšek
- Department for Nanostructured Materials, Jožef Stefan Institute, Jamova 39, 1000 Ljubljana, Slovenia;
- Correspondence: (N.K.); (M.C.F.)
| | - Mauro Comes Franchini
- Department of Industrial Chemistry Toso Montanari, University of Bologna, Viale Risorgimento 4, 40136 Bologna, Italy; (M.M.); (E.L.); (L.S.); (S.T.)
- Correspondence: (N.K.); (M.C.F.)
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12
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Ha M, Nam SH, Sim K, Chong SE, Kim J, Kim Y, Lee Y, Nam JM. Highly Efficient Photothermal Therapy with Cell-Penetrating Peptide-Modified Bumpy Au Triangular Nanoprisms using Low Laser Power and Low Probe Dose. NANO LETTERS 2021; 21:731-739. [PMID: 33332127 DOI: 10.1021/acs.nanolett.0c04386] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Photothermal therapy (PTT) exploits nanomaterials with optimal heat conversion and cellular penetration using near-infrared (NIR) laser irradiation. However, current PTT agents suffer from inefficient heat conversion, poor intracellular delivery, and a high dose of probes along with excessive laser irradiation, causing limited therapeutic outcomes. Here, bumpy Au triangular nanoprisms (BATrisms) are developed for increasing the surface area, improving cell penetration, shifting the absorption peak to the NIR region, and enhancing the photothermal conversion efficiency (∼86%). Further, leucine (L)- and lysine (K)-rich cell-penetrating peptides (LK peptides) were employed to largely improve their cellular uptake efficiency. Importantly, a significant in vivo therapeutic efficacy with LK-BATrisms was demonstrated in a triple-negative breast cancer xenograft mice model. A very small dose of LK-BATrism (2.5 μg Au) was enough to exert antitumor efficacy under very low laser power (808 nm, 0.25 W/cm2), causing minimal tissue damages while very efficiently killing cancer cells.
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Affiliation(s)
- Minji Ha
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - So Hee Nam
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Kyunjong Sim
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Seung-Eun Chong
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Jiyeon Kim
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Yuna Kim
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Yan Lee
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University, Seoul 08826, South Korea
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13
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Liu B, Qiao G, Han Y, Shen E, Alfranca G, Tan H, Wang L, Pan S, Ma L, Xiong W, Liu Y, Cui D. Targeted theranostics of lung cancer: PD-L1-guided delivery of gold nanoprisms with chlorin e6 for enhanced imaging and photothermal/photodynamic therapy. Acta Biomater 2020; 117:361-373. [PMID: 33007481 DOI: 10.1016/j.actbio.2020.09.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 01/27/2023]
Abstract
Peptide modified nanoparticles have emerged as powerful tools for enhanced cancer diagnosis and novel treatment strategies. Here, human programmed death-ligand 1 (PD-L1) peptides were used for the first time for the modification of gold nanoprisms (GNPs) to enhance targeting efficiency. A multifunctional nanoprobe was developed that the GNPs@PEG/Ce6-PD-L1 peptide (GNPs@PEG/Ce6-P) was used for imaging-guided photothermal/photodynamic therapy by using the targeting effect of PD-L1. Both confocal imaging and flow cytometry experiments demonstrated a remarkable affinity of the as-prepared nanoprobes GNPs@PEG/Ce6-P to lung cancer cells (HCC827), which have a high PD-L1 expression. Subsequent in vitro and in vivo experiments further demonstrated that the nanoprobes GNPs@PEG/Ce6-P not only allowed for real-time visualization via fluorescence (FL) imaging and photoacoustic (PA) imaging, but also served as phototherapy agents for synergistic photothermal therapy (PTT) and photodynamic therapy (PDT). Furthermore, treatments on human lung cancer cells-derived tumors demonstrated that the nanoprobes GNPs@PEG/Ce6-P could significantly suppress tumor growth through PTT and PDT from GNPs and Ce6, respectively. In conclusion, the as-prepared new nanoprobes show promising potential for nanomedicine with remarkable targeting ability for dual-mode imaging and enhanced PDT and PTT effects on lung cancer.
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14
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Lou-Franco J, Das B, Elliott C, Cao C. Gold Nanozymes: From Concept to Biomedical Applications. NANO-MICRO LETTERS 2020; 13:10. [PMID: 34138170 PMCID: PMC8187695 DOI: 10.1007/s40820-020-00532-z] [Citation(s) in RCA: 94] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 09/02/2020] [Indexed: 05/02/2023]
Abstract
In recent years, gold nanoparticles have demonstrated excellent enzyme-mimicking activities which resemble those of peroxidase, oxidase, catalase, superoxide dismutase or reductase. This, merged with their ease of synthesis, tunability, biocompatibility and low cost, makes them excellent candidates when compared with biological enzymes for applications in biomedicine or biochemical analyses. Herein, over 200 research papers have been systematically reviewed to present the recent progress on the fundamentals of gold nanozymes and their potential applications. The review reveals that the morphology and surface chemistry of the nanoparticles play an important role in their catalytic properties, as well as external parameters such as pH or temperature. Yet, real applications often require specific biorecognition elements to be immobilized onto the nanozymes, leading to unexpected positive or negative effects on their activity. Thus, rational design of efficient nanozymes remains a challenge of paramount importance. Different implementation paths have already been explored, including the application of peroxidase-like nanozymes for the development of clinical diagnostics or the regulation of oxidative stress within cells via their catalase and superoxide dismutase activities. The review also indicates that it is essential to understand how external parameters may boost or inhibit each of these activities, as more than one of them could coexist. Likewise, further toxicity studies are required to ensure the applicability of gold nanozymes in vivo. Current challenges and future prospects of gold nanozymes are discussed in this review, whose significance can be anticipated in a diverse range of fields beyond biomedicine, such as food safety, environmental analyses or the chemical industry.
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Affiliation(s)
- Javier Lou-Franco
- Institute for Global Food Security, School of Biological Sciences, Queen's University of Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
| | - Bhaskar Das
- Institute for Global Food Security, School of Biological Sciences, Queen's University of Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela, India
| | - Christopher Elliott
- Institute for Global Food Security, School of Biological Sciences, Queen's University of Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK
| | - Cuong Cao
- Institute for Global Food Security, School of Biological Sciences, Queen's University of Belfast, 19 Chlorine Gardens, Belfast, BT9 5DL, UK.
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15
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Relaxometric Studies of Gd-Chelate Conjugated on the Surface of Differently Shaped Gold Nanoparticles. NANOMATERIALS 2020; 10:nano10061115. [PMID: 32516931 PMCID: PMC7353348 DOI: 10.3390/nano10061115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 05/29/2020] [Accepted: 06/02/2020] [Indexed: 01/13/2023]
Abstract
Nowadays, magnetic resonance imaging (MRI) is one of the key, noninvasive modalities to detect and stage cancer which benefits from contrast agents (CA) to differentiate healthy from tumor tissue. An innovative class of MRI CAs is represented by Gd-loaded gold nanoparticles. The size, shape and chemical functionalization of Gd-loaded gold nanoparticles appear to affect the observed relaxation enhancement of water protons in their suspensions. The herein reported results shed more light on the determinants of the relaxation enhancement brought by Gd-loaded concave cube gold nanoparticles (CCGNPs). It has been found that, in the case of nanoparticles endowed with concave surfaces, the relaxivity is remarkably higher compared to the corresponding spherical (i.e., convex) gold nanoparticles (SPhGNPs). The main determinant for the observed relaxation enhancement is represented by the occurrence of a large contribution from second sphere water molecules which can be exploited in the design of high-efficiency MRI CA.
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16
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Ramírez-Jiménez R, Artiga Á, Mitchell SG, Martín-Rapún R, de la Fuente JM. Surfactant-Free Synthesis and Scalable Purification of Triangular Gold Nanoprisms with Low Non-Specific Cellular Uptake. NANOMATERIALS 2020; 10:nano10030539. [PMID: 32192152 PMCID: PMC7153367 DOI: 10.3390/nano10030539] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 12/14/2022]
Abstract
Gold nanoprisms possess remarkable optical properties that make them useful for medical biotechnology applications such as diagnosis and photothermal therapy. However, shape-selective synthesis of gold nanoprisms is not trivial and typically requires either toxic surfactants or time-consuming purification protocols, which can limit their applicability. Here, we show how triangular gold nanoprisms of different sizes can be purified by precipitation using the non-toxic glutathione ligand, thereby removing the need for toxic surfactants and bottleneck purification techniques. The protocol is amenable for direct scaling up as no instrumentation is required in the critical purification step. The new purification method provides a two-fold increased yield in gold nanoprisms compared to electrophoretic filtration, while providing nanoprisms of similar localized surface plasmon resonance wavelength. Crucially, the gold nanoprisms isolated using this methodology show fewer non-specific interactions with cells and lower cellular internalization, which paves the way for a higher selectivity in therapeutic applications.
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Affiliation(s)
- Rafael Ramírez-Jiménez
- Instituto de Ciencia de Materiales de Aragón (CSIC-Universidad de Zaragoza), c/ Pedro Cerbuna s/n, 50009 Zaragoza, Spain; (R.R.-J.); (S.G.M.)
- Centro de Investigación Biomédica en Red in Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Álvaro Artiga
- Instituto de Ciencia de Materiales de Aragón (CSIC-Universidad de Zaragoza), c/ Pedro Cerbuna s/n, 50009 Zaragoza, Spain; (R.R.-J.); (S.G.M.)
- Centro de Investigación Biomédica en Red in Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Scott G. Mitchell
- Instituto de Ciencia de Materiales de Aragón (CSIC-Universidad de Zaragoza), c/ Pedro Cerbuna s/n, 50009 Zaragoza, Spain; (R.R.-J.); (S.G.M.)
- Centro de Investigación Biomédica en Red in Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
| | - Rafael Martín-Rapún
- Instituto de Ciencia de Materiales de Aragón (CSIC-Universidad de Zaragoza), c/ Pedro Cerbuna s/n, 50009 Zaragoza, Spain; (R.R.-J.); (S.G.M.)
- Centro de Investigación Biomédica en Red in Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
- Instituto de Nanociencia de Aragón, Depto. Química Orgánica (Universidad de Zaragoza), c/ Mariano Esquillor s/n, 50018 Zaragoza, Spain
- Correspondence: (R.M.-R.); (J.M.d.l.F.)
| | - Jesús M. de la Fuente
- Instituto de Ciencia de Materiales de Aragón (CSIC-Universidad de Zaragoza), c/ Pedro Cerbuna s/n, 50009 Zaragoza, Spain; (R.R.-J.); (S.G.M.)
- Centro de Investigación Biomédica en Red in Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
- Correspondence: (R.M.-R.); (J.M.d.l.F.)
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17
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Habiba K, Aziz K, Sanders K, Santiago CM, Mahadevan LSK, Makarov V, Weiner BR, Morell G, Krishnan S. Enhancing Colorectal Cancer Radiation Therapy Efficacy using Silver Nanoprisms Decorated with Graphene as Radiosensitizers. Sci Rep 2019; 9:17120. [PMID: 31745177 PMCID: PMC6864075 DOI: 10.1038/s41598-019-53706-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 11/05/2019] [Indexed: 12/20/2022] Open
Abstract
Metal nanoparticles have significant interaction cross-sections with electromagnetic waves due to their large surface area-to-volume ratio, which can be exploited in cancer radiotherapy to locally enhance the radiation dose deposition in tumors. We developed a new type of silver nanoparticle composite, PEGylated graphene quantum dot (GQD)-decorated Silver Nanoprisms (pGAgNPs), that show excellent in vitro intracellular uptake and radiosensitization in radiation-sensitive HCT116 and relatively radiation-resistant HT29 colorectal cancer cells. Furthermore, following biodistribution analysis of intravenously injected nanoparticles in nude mice bearing HCT116 tumors radiosensitization was evaluated. Treatment with nanoparticles and a single radiation dose of 10 Gy significantly reduces the growth of colorectal tumors and increases the survival time as compared to treatment with radiation only. Our findings suggest that these novel nanoparticles offer a promising paradigm for enhancing colorectal cancer radiation therapy efficacy.
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Affiliation(s)
- Khaled Habiba
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.
| | - Kathryn Aziz
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Keith Sanders
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA
| | - Carlene Michelle Santiago
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, 77030, USA.,Department of Biology, University of Puerto Rico -Rio Piedras Campus, San Juan, PR, 00925-2537, USA.,Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico, 00926-2614, USA
| | | | - Vladimir Makarov
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico, 00926-2614, USA.,Department of Physics, University of Puerto Rico -Rio Piedras Campus, San Juan, PR, 00925-2537, USA
| | - Brad R Weiner
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico, 00926-2614, USA.,Department of Chemistry, University of Puerto Rico -Rio Piedras Campus, San Juan, PR, 00925-2537, USA.,Comprehensive Cancer Center, University of Puerto Rico, San Juan, PR, 00936-3027, USA
| | - Gerardo Morell
- Molecular Sciences Research Center, University of Puerto Rico, San Juan, Puerto Rico, 00926-2614, USA.,Department of Physics, University of Puerto Rico -Rio Piedras Campus, San Juan, PR, 00925-2537, USA.,Comprehensive Cancer Center, University of Puerto Rico, San Juan, PR, 00936-3027, USA
| | - Sunil Krishnan
- Department of Radiation Oncology, Mayo Clinic Florida, Jacksonville, FL, 32224, USA.
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18
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Yuan M, Wang Y, Hwang D, Longtin JP. Thermocouple-tip-exposing temperature assessment technique for evaluating photothermal conversion efficiency of plasmonic nanoparticles at low laser power density. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:094902. [PMID: 31575270 DOI: 10.1063/1.5109117] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 08/31/2019] [Indexed: 06/10/2023]
Abstract
A new thermocouple (TC) tip-exposing temperature assessment technique that combines experimental temperature measurements with a numerical model of the photothermal conversion efficiency η is presented. The proposed technique is designed to evaluate η for a gold-coated superparamagnetic iron oxide nanoparticle (SPIO-Au NP) solution (26 nm, 12-70 ppm) at low continuous wave laser power (103 mW, 532 nm) irradiation in a convenient manner under ambient conditions. The TC tip temperature is measured during the first 30 s of the laser exposure, and the results are combined with a finite element model to simulate the temperature rise of the NP solution for a given concentration. The value of η is adjusted in the model until the model agrees with the measured transient TC temperature rise. Values of η = 1.00 were observed for all concentrations. Theoretical predictions of η derived by Mie theory confirmed the near unity conversion efficiency of the as-synthesized SPIO-Au NPs. Advantages of the current technique include co-locating the TC tip in the geometric center of the laser-heated region, rather than outside of this region. In addition, the technique can be done under ambient room conditions using unmodified commercially available hardware.
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Affiliation(s)
- Muzhaozi Yuan
- J. Mike Walker '66 Department of Mechanical Engineering, Texas A and M University, College Station, Texas 77840-3123, USA
| | - Ya Wang
- J. Mike Walker '66 Department of Mechanical Engineering, Texas A and M University, College Station, Texas 77840-3123, USA
| | - David Hwang
- Department of Mechanical Engineering, Stony Brook University, Stony Brook, New York 11794-2300, USA
| | - Jon P Longtin
- Department of Mechanical Engineering, Stony Brook University, Stony Brook, New York 11794-2300, USA
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19
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Requejo KI, Liopo AV, Derry PJ, Zubarev ER. Improving the Shape Yield and Long-Term Stability of Gold Nanoprisms with Poly(vinylpyrrolidone). LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:9777-9784. [PMID: 31290673 DOI: 10.1021/acs.langmuir.9b00794] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Gold nanoprisms (AuNPRs) are anisotropic nanostructures that have gained great attention in recent years because of their interesting and unique optical properties that can be tailored for biomedical, energy, and sensing applications. At present, several protocols have reported the high yield synthesis of AuNPRs of different dimensions using a seed-mediated approach. However, there is a need to develop reproducible and scalable methods with the goal of a controllable synthesis. Here, we report an improved seed-mediated synthesis of small monodisperse AuNPRs of distinct sizes in high yield using poly(vinylpyrrolidone) (PVP) as an additive in nanomolar concentrations. We show optimal synthetic parameters for a blue-shifting of the surface plasmon resonance band which correlates with the reduction in the edge length (L) of AuNPRs from 75 to 35 nm. Using measured extinction coefficients for AuNPRs of different sizes, a linear equation is proposed to estimate the concentration of unknown samples by using Beer's law. Interestingly, the use of nanomolar amounts of PVP during the growth of AuNPRs significantly improves the shape yield. The surface chemistry properties of AuNPRs were measured by X-ray photoelectron spectroscopy and attenuated total reflectance infrared spectroscopy and revealed that PVP chains interact with AuNPRs through the carbonyl oxygen. This method is reproducible and scalable and enables the synthesis of AuNPRs with long-term shape stability (1 year) in aqueous solution.
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Affiliation(s)
- Katherinne I Requejo
- Department of Chemistry , Rice University , 6100 S Main Street Houston , Texas 77005 , United States
| | - Anton V Liopo
- Department of Chemistry , Rice University , 6100 S Main Street Houston , Texas 77005 , United States
| | - Paul J Derry
- Department of Chemistry , Rice University , 6100 S Main Street Houston , Texas 77005 , United States
| | - Eugene R Zubarev
- Department of Chemistry , Rice University , 6100 S Main Street Houston , Texas 77005 , United States
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20
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Zhao Y, Liu W, Tian Y, Yang Z, Wang X, Zhang Y, Tang Y, Zhao S, Wang C, Liu Y, Sun J, Teng Z, Wang S, Lu G. Anti-EGFR Peptide-Conjugated Triangular Gold Nanoplates for Computed Tomography/Photoacoustic Imaging-Guided Photothermal Therapy of Non-Small Cell Lung Cancer. ACS APPLIED MATERIALS & INTERFACES 2018; 10:16992-17003. [PMID: 29722264 DOI: 10.1021/acsami.7b19013] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Non-small cell lung cancer (NSCLC) is difficult to cure because of the high recurrence rate and the side effects of current treatments. It is urgent to develop a new treatment that is safer and more effective than current treatments against NSCLC. Herein, we constructed anti-epidermal growth factor receptor (EGFR) peptide-conjugated PEGylated triangular gold nanoplates (TGN-PEG-P75) as a targeting photothermal therapy (PTT) agent to treat NSCLC under the guidance of computed tomography (CT) and photoacoustic (PA) imaging. The surface of TGNs is successfully conjugated with a novel peptide P75 that has the specific affinity to epidermal growth factor receptor (EGFR). It is found that the EGFR is overexpressed in NSCLC cells. The TGN-PEG-P75 has uniform edge length (77.9 ± 7.0 nm) and neutrally charged surface. The cell uptake experiments demonstrate remarkable affinity of the TGN-PEG-P75 to high EGFR expression cells than low EGFR expression cells (5.1-fold). Thanks to the strong near-infrared absorbance, high photothermal conversion efficiency, and the increased accumulation in tumor cells via the interaction of P75 and EGFR, TGN-PEG-P75 exhibits 3.8-fold superior therapeutic efficacy on HCC827 cells than TGN-PEG. The in vivo CT/PA dual-modal imaging of the TGN-PEG-P75 is helpful in selecting the optimal treatment time and providing real-time visual guidance of PTT. Furthermore, treatments on HCC827 tumor-bearing mouse model demonstrate that the growth of NSCLC cells can be effectively inhibited by the TGN-PEG-P75 through PTT, indicating the great promise of the nanoplatform for treating NSCLC in vivo.
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Affiliation(s)
| | - Wenfei Liu
- Department of Respiration, Nanjing First Hospital , Nanjing Medical University , Nanjing 210029 , Jiangsu , P. R. China
| | | | | | | | | | | | | | | | | | | | - Zhaogang Teng
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , Jiangsu , P. R. China
| | | | - Guangming Lu
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering , Nanjing University , Nanjing 210093 , Jiangsu , P. R. China
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21
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Peng Y, Liu Y, Lu X, Wang S, Chen M, Huang W, Wu Z, Lu G, Nie L. Ag-Hybridized plasmonic Au-triangular nanoplates: highly sensitive photoacoustic/Raman evaluation and improved antibacterial/photothermal combination therapy. J Mater Chem B 2018; 6:2813-2820. [PMID: 32254234 DOI: 10.1039/c8tb00617b] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Core-shell metal nanostructures with versatile functions have attracted extensive attention and are highly desirable for imaging and therapeutic purposes. Among them, gold and silver nanomaterials are widely explored for biological applications due to their unique properties. Despite a wide range of applications, limited enhancement ability and insufficient photothermal performance have hampered their further development. In this work, a novel multifunctional nanoprobe, a Au@Ag nanoplate (NP), is fabricated with a biocompatible surface in the aqueous phase. The as-obtained nanocomposite possesses a unique core-shell triangular configuration, sharp apexes, and a large specific surface area, exhibiting strong absorption at 780 nm. PEG-Au@Ag NPs depict highly sensitive photoacoustic imaging (PAI) capacity and extraordinary photothermal conversion efficiency (η = 73%) under 808 nm laser irradiation. Raman signals are multiplied benefitting from the enhanced surface plasma resonance contributed by the silver layer and sharp spears. PAI provides deeper pathological information while Raman detection presents superficial optical properties. Their union forms comprehensive scale coverage for disease imaging and localization. Outstanding photothermal therapy and antibacterial efficacy are observed on animal disease models. This novel multifunctional nanocomposite not only holds great potential as an excellent contrast agent for the combination of PAI and Raman evaluation, but also allows tumor and infection therapy as well as the corresponding therapeutic monitoring.
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Affiliation(s)
- Ya Peng
- State Key Laboratory of Molecular Vaccinology and Molecular Diagnosis & Center for Molecular Imaging and Translational Medicine, School of Public Health, Xiamen University, Xiamen, 361102, China.
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22
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Wang S, Ma X, Hong X, Cheng Y, Tian Y, Zhao S, Liu W, Tang Y, Zhao R, Song L, Teng Z, Lu G. Adjuvant Photothermal Therapy Inhibits Local Recurrences after Breast-Conserving Surgery with Little Skin Damage. ACS NANO 2018; 12:662-670. [PMID: 29271636 DOI: 10.1021/acsnano.7b07757] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Adjuvant treatments following breast-conserving surgery (BCS) are essential to reduce the risk of local recurrences in patients with breast cancer. However, current adjuvant treatments are based on ionizing radiation, which brings radiation-induced damage and amplifies the risk of death. Here we explore the feasibility of using non-ionizing light to induce photothermal therapy as an adjuvant treatment to BCS. In an orthotopic breast cancer mice model, we demonstrate that adjuvant photothermal therapy (aPTT) decreases the incidence of local recurrences after BCS with no expense of cosmetic outcome. In comparison with conventional photothermal therapy, the technique used in aPTT provides more uniformly distributed light energy and less risk of skin burns and local recurrences. Overall, this work represents a departure from the traditional concept of using PTT as an alternative to surgery and reveals the potential of using PTT as an alternative to adjuvant radiation therapy, which is valuable especially for patients susceptible to radiation damage.
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Affiliation(s)
- Shouju Wang
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China
| | - Xingqun Ma
- The Affiliated Bayi Hospital of Nanjing University of Chinese Medicine , Nanjing 210002, P. R. China
| | - Xuhao Hong
- Department of Physics, Nanjing University , Nanjing 210000, P. R. China
| | - Yingxia Cheng
- The Affiliated Bayi Hospital of Nanjing University of Chinese Medicine , Nanjing 210002, P. R. China
| | - Ying Tian
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
| | - Shuang Zhao
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
| | - Wenfei Liu
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
| | - Yuxia Tang
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
| | - Ruizhi Zhao
- Department of Physics, Nanjing University , Nanjing 210000, P. R. China
| | - Liang Song
- Research Laboratory for Biomedical Optics and Molecular Imaging, Shenzhen Key Laboratory for Molecular Imaging, Institute of Biomedical and Health Engineering, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences , Shenzhen 518055, P. R. China
| | - Zhaogang Teng
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China
| | - Guangming Lu
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P. R. China
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23
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Liu W, Tian Y, Zhang Y, Liu K, Zhao S, Zhang J, Su Y, Zhao Y, Tang Y, Sun J, Tian W, Song L, Teng Z, Wang S, Lu G. Timely coordinated phototherapy mediated by mesoporous organosilica coated triangular gold nanoprisms. J Mater Chem B 2018; 6:3865-3875. [PMID: 32254314 DOI: 10.1039/c8tb00541a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Mesoporous organosilica coated triangular gold nanoprisms for timely coordinated phototherapy.
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Affiliation(s)
- Wenfei Liu
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Ying Tian
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Yunlei Zhang
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Kai Liu
- Nanjing Stomatological Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Shuang Zhao
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Junjie Zhang
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Yunyan Su
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Ying Zhao
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Yuxia Tang
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Jing Sun
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Wei Tian
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
| | - Liang Song
- Research Laboratory for Biomedical Optics and Molecular Imaging
- Shenzhen Key Laboratory for Molecular Imaging
- Institute of Biomedical and Health Engineering
- Shenzhen Institutes of Advanced Technology
- Chinese Academy of Sciences
| | - Zhaogang Teng
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science
| | - Shouju Wang
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science
| | - Guangming Lu
- Department of Medical Imaging, Jinling Hospital
- Medical School of Nanjing University
- Nanjing
- P. R. China
- State Key Laboratory of Analytical Chemistry for Life Science
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24
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Zhao S, Tian Y, Liu W, Su Y, Zhang Y, Teng Z, Zhao Y, Wang S, Lu G, Yu Z. High and low molecular weight hyaluronic acid-coated gold nanobipyramids for photothermal therapy. RSC Adv 2018; 8:9023-9030. [PMID: 35539858 PMCID: PMC9078663 DOI: 10.1039/c7ra11667e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 02/21/2018] [Indexed: 11/21/2022] Open
Abstract
Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer. It is known that hyaluronic acid (HA) binds CD44 receptors, which are overexpressed on the surface of TNBC cells. To optimize the targeting ability of HA, in this study we coated gold nanobipyramids (GBPs) with high and low molecular weight HA (380 kDa and 102 kDa), named GBPs@h-HA and GBPs@l-HA, respectively. GBPs@l-HA and GBPs@h-HA had excellent stability when dispersed in water and PBS (pH 7.4) for seven days. The HA density was calculated by the ratio of HA to GBPs@l-HA and GBPs@h-HA, which was 13.22 and 4.77, respectively. The two nanoparticles displayed good photostability, which was evaluated by their photothermal performance and similar biocompatibility. Inductively coupled plasma atomic emission spectrometry (ICP-AES) revealed superior cellular uptake of GBPs@h-HA over GBPs@l-HA. Upon 808 nm laser irradiation, the GBPs@h-HA also showed higher therapeutic efficacy than GBPs@l-HA both in vitro and in vivo. Overall, our study demonstrates that the molecular weight of HA plays an important role in the targeting ability and thus photothermal therapeutic efficacy of HA-coated gold nanobipyramids. Triple-negative breast cancer (TNBC) is an aggressive subtype of breast cancer. Hyaluronic acid (HA) could bind CD44 receptors, which are overexpressed on the surface of TNBC cells. Upon 808 nm laser irradiation, the GBPs@HA showed high therapeutic efficacy in vivo.![]()
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25
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Liu W, Liu K, Zhao Y, Zhao S, Luo S, Tian Y, Teng Z, Wang S, Lu G. T
1-Weighted MR/CT dual-modality imaging-guided photothermal therapy using gadolinium-functionalized triangular gold nanoprism. RSC Adv 2017. [DOI: 10.1039/c7ra01101f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Triangular gold nanoprism decorated with gadopentetic acid (TGP–PEG–Gd) for PTT guided by T1-weighted MR/CT dual-modality imaging.
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Affiliation(s)
- Wenfei Liu
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Kai Liu
- Nanjing Stomatological Hospital
- Medical School of Nanjing University
- Nanjing 210008
- P. R. China
| | - Ying Zhao
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Shuang Zhao
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Song Luo
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Ying Tian
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Zhaogang Teng
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Shouju Wang
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
| | - Guangming Lu
- Department of Medical Imaging
- Jinling Hospital
- Medical School of Nanjing University
- Nanjing 210002
- P. R. China
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26
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Wang S, Tian Y, Tian W, Sun J, Zhao S, Liu Y, Wang C, Tang Y, Ma X, Teng Z, Lu G. Selectively Sensitizing Malignant Cells to Photothermal Therapy Using a CD44-Targeting Heat Shock Protein 72 Depletion Nanosystem. ACS NANO 2016; 10:8578-90. [PMID: 27576159 DOI: 10.1021/acsnano.6b03874] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Selectively enhance the therapeutic efficacy to malignancy is one of the most important issues for photothermal therapy (PTT). However, most solid tumors, such as triple negative breast cancer (TNBC), do not have identifiable surface markers to distinguish themselves from normal cells, thus it is challenging to selectively identify and eliminate those malignances by PTT. In this report, we hypothesized that, by targeting CD44 (one TNBC-overexpressed surface molecule) and depleting heat shock protein 72 (HSP72, one malignancy-specific-overexpressed thermotolerance-related chaperone) subsequently, the TNBC could be selectively sensitized to PTT and improve the accuracy of treatment. To this end, a rationally designed nanosystem gold nanostar (GNS)/siRNA against HSP72 (siHSP72)/hyaluronic acid (HA) was successfully constructed using a layer-by-layer method. Hydrodynamic diameter and zeta potential analysis demonstrated the formation of GNS/siHSP72/HA having a particle size of 73.2 ± 3.8 nm and a negative surface charge of -18.3 ± 1.6 mV. The CD44-targeting ability of GNS/siHSP72/HA was confirmed by the flow cytometer, confocal microscopic imaging, and competitive binding analysis. The HSP72 silencing efficacy of GNS/siHSP72/HA was ∼95% in complete culture medium. By targeting CD44 and depleting HSP72 sequentially, GNS/siHSP72/HA could selectively sensitize TNBC cells to hyperthermia and enhance the therapeutic efficacy to TNBC with minimal side effect both in vitro and in vivo. Other advantages of GNS/siHSP72/HA included easy synthesis, robust siRNA loading capacity, endosome/lysosome escaping ability, high photothermal conversion efficacy and superior hemo- and biocompatibility.
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Affiliation(s)
- Shouju Wang
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P.R. China
| | - Ying Tian
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P.R. China
| | - Wei Tian
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
| | - Jing Sun
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
| | - Shuang Zhao
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
| | - Ying Liu
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
| | - Chunyan Wang
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
| | - Yuxia Tang
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P.R. China
| | - Xingqun Ma
- PLA Cancer Center of Nanjing Bayi Hospital , Nanjing 210002, P.R. China
| | - Zhaogang Teng
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P.R. China
| | - Guangming Lu
- Department of Medical Imaging, Jinling Hospital, School of Medicine, Nanjing University , Nanjing 210002, P.R. China
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University , Nanjing 210093, P.R. China
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27
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Ngo HM, Luong TT, Ledoux-Rak I. Surface area-dependent second harmonic generation from silver nanorods. Phys Chem Chem Phys 2016; 18:23215-9. [PMID: 27498825 DOI: 10.1039/c6cp04707f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The nonlinear optical (NLO) properties of metallic nanoparticles strongly depend on their size and shape. Metallic gold nanorods have already been widely investigated, but other noble metals could also be used for nanorod fabrication towards applications in photonics. Here we report on the synthesis and NLO characterization of silver nanorods (AgNRs) with controllable localized surface plasmon resonance. We have implemented an original, one-step and seedless synthesis method, based on a spontaneous particle growth technique in the presence of polyvinylpyrrolidone (PVP) as a capping agent. Colloidal solutions of AgNRs with various aspect ratios (5.0; 6.3; 7.5; 8.2 and 9.7) have been obtained and characterized using Harmonic light scattering (HLS) at 1064 nm, in order to investigate their quadratic NLO properties. From HLS experiments, we demonstrate that hyperpolarizability (β) values of AgNRs display a strong dependence on their surface area.
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Affiliation(s)
- Hoang Minh Ngo
- Laboratoire de Photonique Quantique et Moléculaire, UMR 8537, Ecole Normale Supérieure de Cachan, CentraleSupélec, CNRS, Université Paris-Saclay, 94235 Cachan, France.
| | - Thanh Tuyen Luong
- Laboratoire de Photonique Quantique et Moléculaire, UMR 8537, Ecole Normale Supérieure de Cachan, CentraleSupélec, CNRS, Université Paris-Saclay, 94235 Cachan, France.
| | - Isabelle Ledoux-Rak
- Laboratoire de Photonique Quantique et Moléculaire, UMR 8537, Ecole Normale Supérieure de Cachan, CentraleSupélec, CNRS, Université Paris-Saclay, 94235 Cachan, France.
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