101
|
Yoon S, Lee B, Yun J, Han JG, Lee JS, Lee JH. Systematic study of interdependent relationship on gold nanorod synthesis assisted by electron microscopy image analysis. NANOSCALE 2017; 9:7114-7123. [PMID: 28513707 DOI: 10.1039/c7nr01462g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Here, we systematically investigated the independent, multiple, and synergic effects of three major components, namely, ascorbic acid (AA), seed, and silver ions (Ag+), on the characteristics of gold nanorods (GNRs), i.e., longitudinal localized surface plasmon resonance (LSPR) peak position, shape, size, and monodispersity. To quantitatively assess the shape and dimensions of GNRs, we used an automated transmission electron microscopy image analysis method using a MATLAB-based code developed in-house and the concept of solidity, which is the ratio between the area of a GNR and the area of its convex hull. The solidity of a straight GNR is close to 1, while it decreases for both dumbbell- and dogbone-shaped GNRs. We found that the LSPR peak position, shape, and monodispersity of the GNRs all altered simultaneously with changes in the amounts of individual components. For example, as the amount of AA increased, both the LSPR peak and solidity decreased, while the polydispersity increased. In contrast, as the amount of seeds increased, both the LSPR and solidity increased, while the monodispersity improved. More importantly, we found that the influence of each component can actually change depending on the composition of the GNR growth solution. For instance, the LSPR peak position red-shifted as the amount of AA increased when the seed content was low, whereas it blue-shifted when the seed content was high.
Collapse
Affiliation(s)
- Seokyoung Yoon
- SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University (SKKU), Suwon 16419, South Korea.
| | | | | | | | | | | |
Collapse
|
102
|
MacEwan SR, Chilkoti A. Von der Zusammensetzung zur Heilung: ein systemtechnischer Ansatz zur Entwicklung von Trägern für Tumortherapeutika. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201610819] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Sarah R. MacEwan
- Department of Biomedical Engineering; Duke University; P.O. Box 90281 Durham NC 27708 USA
- Research Triangle MRSEC; Durham NC 27708 USA
- Institute for Molecular Engineering; University of Chicago; Chicago IL 60637 USA
| | - Ashutosh Chilkoti
- Department of Biomedical Engineering; Duke University; P.O. Box 90281 Durham NC 27708 USA
- Research Triangle MRSEC; Durham NC 27708 USA
| |
Collapse
|
103
|
Bates PJ, Reyes-Reyes EM, Malik MT, Murphy EM, O'Toole MG, Trent JO. G-quadruplex oligonucleotide AS1411 as a cancer-targeting agent: Uses and mechanisms. Biochim Biophys Acta Gen Subj 2017; 1861:1414-1428. [PMID: 28007579 DOI: 10.1016/j.bbagen.2016.12.015] [Citation(s) in RCA: 201] [Impact Index Per Article: 28.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 12/16/2016] [Accepted: 12/17/2016] [Indexed: 02/08/2023]
Abstract
BACKGROUND AS1411 is a 26-mer G-rich DNA oligonucleotide that forms a variety of G-quadruplex structures. It was identified based on its cancer-selective antiproliferative activity and subsequently determined to be an aptamer to nucleolin, a multifunctional protein that preferentially binds quadruplex nucleic acids and which is present at high levels on the surface of cancer cells. AS1411 has exceptionally efficient cellular internalization compared to non-quadruplex DNA sequences. SCOPE OF REVIEW Recent developments related to AS1411 will be examined, with a focus on its use for targeted delivery of therapeutic and imaging agents. MAJOR CONCLUSIONS Numerous research groups have used AS1411 as a targeting agent to deliver nanoparticles, oligonucleotides, and small molecules into cancer cells. Studies in animal models have demonstrated that AS1411-linked materials can accumulate selectively in tumors following systemic administration. The mechanism underlying the cancer-targeting ability of AS1411 is not completely understood, but recent studies suggest a model that involves: (1) initial uptake by macropinocytosis, a form of endocytosis prevalent in cancer cells; (2) stimulation of macropinocytosis by a nucleolin-dependent mechanism resulting in further uptake; and (3) disruption of nucleolin-mediated trafficking and efflux leading to cargoes becoming trapped inside cancer cells. SIGNIFICANCE Human trials have indicated that AS1411 is safe and can induce durable remissions in a few patients, but new strategies are needed to maximize its clinical impact. A better understanding of the mechanisms by which AS1411 targets and kills cancer cells may hasten the development of promising technologies using AS1411-linked nanoparticles or conjugates for cancer-targeted therapy and imaging. This article is part of a Special Issue entitled "G-quadruplex" Guest Editor: Dr. Concetta Giancola and Dr. Daniela Montesarchio.
Collapse
Affiliation(s)
- Paula J Bates
- Department of Medicine, University of Louisville, USA; James Graham Brown Cancer Center, University of Louisville, USA.
| | | | - Mohammad T Malik
- Department of Medicine, University of Louisville, USA; James Graham Brown Cancer Center, University of Louisville, USA
| | - Emily M Murphy
- Department of Biomedical Engineering, University of Louisville, USA
| | - Martin G O'Toole
- Department of Biomedical Engineering, University of Louisville, USA
| | - John O Trent
- Department of Medicine, University of Louisville, USA; James Graham Brown Cancer Center, University of Louisville, USA
| |
Collapse
|
104
|
Zhao F, Zhou J, Su X, Wang Y, Yan X, Jia S, Du B. A Smart Responsive Dual Aptamers-Targeted Bubble-Generating Nanosystem for Cancer Triplex Therapy and Ultrasound Imaging. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1603990. [PMID: 28371376 DOI: 10.1002/smll.201603990] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/20/2017] [Indexed: 06/07/2023]
Abstract
The absence of targeted, single treatment methods produces low therapeutic value for treating cancers. To increase the accumulation of drugs in tumors and improve the treatment effectiveness, near-infrared 808 nm photothermal responsive dual aptamers-targeted docetaxel (DTX)-containing nanoparticles is proposed. In this system, DTX and NH4 HCO3 are loaded in thermosensitive liposomes. The surface of liposomes is coated with gold nanoshells and connected with sulfydryl (SH) modified AS1411 and S2.2 aptamers. The nanosystem has good biocompatibility and uniform size (diameter about 200 nm). The drug is rapidly released, reaching a maximum amount (84%) at 4 h under 808 nm laser irradiation. The experiments conducted in vitro and in vivo demonstrate the nanosystem can synergistically inhibit tumor growth by combination of chemotherapy, photothermal therapy, and biological therapy. Dual ligand functionalization significantly increases cellular uptake on breast cancer cell line (MCF-7) cells and achieves ultrasound imaging (USI) at tumor site. The results indicate that this drug delivery system is a promising theranostic agent involving light-thermal response at tumor sites, dual ligand targeted triplex therapy, and USI.
Collapse
Affiliation(s)
- Feifei Zhao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| | - Jie Zhou
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| | - Xiangjie Su
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| | - Yuhui Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| | - Xiaosa Yan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| | - Shaona Jia
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| | - Bin Du
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, 450001, China
- Collaborative Innovation Center of New Drug Research and Safety Evaluation, Henan Province, Zhengzhou, 450001, China
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, Henan Province, Zhengzhou, 450001, China
| |
Collapse
|
105
|
Arachchige MP, Laha SS, Naik AR, Lewis KT, Naik R, Jena BP. Functionalized nanoparticles enable tracking the rapid entry and release of doxorubicin in human pancreatic cancer cells. Micron 2017; 92:25-31. [DOI: 10.1016/j.micron.2016.10.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 10/20/2022]
|
106
|
Sudhakar S, Santhosh P. Gold Nanomaterials. ADVANCES IN BIOMEMBRANES AND LIPID SELF-ASSEMBLY 2017. [DOI: 10.1016/bs.abl.2017.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
|
107
|
Zhang P, Wang J, Huang H, Qiu K, Huang J, Ji L, Chao H. Enhancing the photothermal stability and photothermal efficacy of AuNRs and AuNTs by grafting with Ru(ii) complexes. J Mater Chem B 2017; 5:671-678. [DOI: 10.1039/c6tb01991a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
In this paper, we found that the ruthenium complex-functionalized AuNRs (AuNRs@Ru) and AuNTs (AuNTs@Ru) exhibited better photothermal stability and higher photothermal efficiency than AuNRs and AuNTs.In vivotumor model studies showed that AuNRs@Ru and AuNRs@Ru were effective for the photothermal destruction of tumors.
Collapse
Affiliation(s)
- Pingyu Zhang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Jinquan Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Huaiyi Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Kangqiang Qiu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Juanjuan Huang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Liangnian Ji
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| | - Hui Chao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry
- School of Chemistry
- Sun Yat-Sen University
- Guangzhou 510275
- China
| |
Collapse
|
108
|
Park JE, Kim S, Son J, Lee Y, Nam JM. Highly Controlled Synthesis and Super-Radiant Photoluminescence of Plasmonic Cube-in-Cube Nanoparticles. NANO LETTERS 2016; 16:7962-7967. [PMID: 27960474 DOI: 10.1021/acs.nanolett.6b04271] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The plasmonic properties of metal nanostructures have been heavily utilized for surface-enhanced Raman scattering (SERS) and metal-enhanced fluorescence (MEF), but the direct photoluminescence (PL) from plasmonic metal nanostructures, especially with plasmonic coupling, has not been widely used as much as SERS and MEF due to the lack of understanding of the PL mechanism, relatively weak signals, and the poor availability of the synthetic methods for the nanostructures with strong PL signals. The direct PL from metal nanostructures is beneficial if these issues can be addressed because it does not exhibit photoblinking or photobleaching, does not require dye-labeling, and can be employed as a highly reliable optical signal that directly depends on nanostructure morphology. Herein, we designed and synthesized plasmonic cube-in-cube (CiC) nanoparticles (NPs) with a controllable interior nanogap in a high yield from Au nanocubes (AuNCs). In synthesizing the CiC NPs, we developed a galvanic void formation (GVF) process, composed of replacement/reduction and void formation steps. We unraveled the super-radiant character of the plasmonic coupling-induced plasmon mode which can result in highly enhanced PL intensity and long-lasting PL, and the PL mechanisms of these structures were analyzed and matched with the plasmon hybridization model. Importantly, the PL intensity and quantum yield (QY) of CiC NPs are 31 times and 16 times higher than those of AuNCs, respectively, which have shown the highest PL intensity and QY reported for metallic nanostructures. Finally, we confirmed the long-term photostability of the PL signal, and the signal remained stable for at least 1 h under continuous illumination.
Collapse
Affiliation(s)
- Jeong-Eun Park
- Department of Chemistry, Seoul National University , Seoul 08826, Republic of Korea
| | - Sungi Kim
- Department of Chemistry, Seoul National University , Seoul 08826, Republic of Korea
| | - Jiwoong Son
- Department of Chemistry, Seoul National University , Seoul 08826, Republic of Korea
| | - Yeonhee Lee
- Department of Chemistry, Seoul National University , Seoul 08826, Republic of Korea
| | - Jwa-Min Nam
- Department of Chemistry, Seoul National University , Seoul 08826, Republic of Korea
| |
Collapse
|
109
|
de Puig H, Bosch I, Carré-Camps M, Hamad-Schifferli K. Effect of the Protein Corona on Antibody-Antigen Binding in Nanoparticle Sandwich Immunoassays. Bioconjug Chem 2016; 28:230-238. [PMID: 28095684 DOI: 10.1021/acs.bioconjchem.6b00523] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We investigated the effect of the protein corona on the function of nanoparticle (NP) antibody (Ab) conjugates in dipstick sandwich immunoassays. Ab specific for Zika virus nonstructural protein 1 (NS1) were conjugated to gold NPs, and another anti-NS1 Ab was immobilized onto the nitrocellulose membrane. Sandwich immunoassay formation was influenced by whether the strip was run in corona forming conditions, i.e., in human serum. Strips run in buffer or pure solutions of bovine serum albumin exhibited false positives, but those run in human serum did not. Serum pretreatment of the nitrocellulose also eliminated false positives. Corona formation around the NP-Ab in serum was faster than the immunoassay time scale. Langmuir binding analysis determined how the immobilized Ab affinity for the NP-Ab/NS1 was impacted by corona formation conditions, quantified as an effective dissociation constant, KDeff. Results show that corona formation mediates the specificity and sensitivity of the antibody-antigen interaction of Zika biomarkers in immunoassays, and plays a critical but beneficial role.
Collapse
Affiliation(s)
| | | | - Marc Carré-Camps
- Department of Chemical Engineering, Institut Quimic de Sarria, Universitat Ramon Llull , Via Augusta 390, 08017 Barcelona, Spain
| | - Kimberly Hamad-Schifferli
- Department of Engineering, University of Massachusetts Boston , Boston, Massachusetts 02125, United States
| |
Collapse
|
110
|
Yu X, Hou J, Shi Y, Su C, Zhao L. Preparation and characterization of novel chitosan-protamine nanoparticles for nucleus-targeted anticancer drug delivery. Int J Nanomedicine 2016; 11:6035-6046. [PMID: 27881917 PMCID: PMC5115688 DOI: 10.2147/ijn.s117066] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
It is well known that most anticancer drugs commonly show high toxicity to the DNA of tumor cells and exert effects by combining with the DNA or associated enzymes in the nucleus. Most developed drugs are first delivered into the cytoplasm and then transferred to the nucleus through the membrane pores. Sometimes, the transportation of drugs from cytoplasm to nucleus is not efficient and often results in poor therapeutic effects. In this study, we developed special and novel nanoparticles (NPs) made of chitosan and protamine for targeted nuclear capture of drugs to enhance anticancer effects. The anticancer effects of nuclear targeted-delivery of drugs in NPs were also evaluated by investigating cytotoxicity, cellular uptake mechanism, and cell apoptosis on cells. Chitosan–protamine NPs were characterized by good drug entrapment, sustained release, small average particle size, low polydispersity index, and high encapsulation efficiency; and accomplished the efficient nuclear delivery of fluorouracil (5-Fu). Compared with free 5-Fu and 5-Fu-loaded chitosan NPs, treatment of A549 cells and HeLa cells with 5-Fu-loaded chitosan–protamine NPs showed the highest cytotoxicity and further induced the significant apoptosis of cells. In addition, 5-Fu-loaded chitosan–protamine NPs exhibited the best efficiency in inhibiting tumor growth than the other three formulations. 5-Fu-loaded chitosan–protamine NPs enhanced antitumor efficacy through the targeted nuclear capture of drugs and showed promising potential as a nanodelivery system for quickly locating drugs in the nucleus of cells.
Collapse
Affiliation(s)
| | | | | | - Chang Su
- School of Veterinary Medicine, Jinzhou Medical University, Jinzhou, People's Republic of China
| | | |
Collapse
|
111
|
Solveyra EG, Tagliazucchi M, Szleifer I. Anisotropic surface functionalization of Au nanorods driven by molecular architecture and curvature effects. Faraday Discuss 2016; 191:351-372. [PMID: 27419660 PMCID: PMC6314812 DOI: 10.1039/c6fd00020g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This work suggests a novel strategy to coat the caps and body of Au-nanorods (Au-NRs) with end-grafted polymer layers of different compositions by taking advantage of the different curvature of these two regions. A molecular theory was used to theoretically investigate the effect of local curvature and molecular architecture (intramolecular connectivity of the monomers) on the adsorption of polymer mixtures on cylindrical (Au-NR body) and spherical (Au-NR caps) surfaces. The adsorption process was systematically studied as a function of the backbone length, number and position of branches, quality of the solvent and total number of monomers of the polymer molecules in the mixture. The balance between repulsive forces and polymer-surface and polymer-polymer attractions governs the amount and composition of the adsorbed layer. This balance is in turn modulated by the architecture of the polymers, the curvature of the surface and the competition between the different polymers in the mixture for the available area. As a result, the equilibrium composition of the polymer layer on spheres and cylinders of the same radius differs, and in turn departs from that of the bulk solution. Curvature plays a major role: the available volume at a given distance from the surface is larger for spherical surfaces than for cylindrical ones, therefore the surface density of the bulkier (more branched) polymer in the mixture is larger on the Au-NR caps than on the Au-NR body. These results suggest that the combination of curvature at the nanoscale and tailored molecular architecture can confer anisotropic nanoparticles with spatially enriched domains and, therefore, lead to nanoconstructs with directional chemical interactions.
Collapse
Affiliation(s)
- Estefania Gonzalez Solveyra
- Department of Biomedical Engineering, Department of Chemistry and Chemistry of Life Processes Institute, Northwestern University, Evanston, Illinois 60208, USA.
| | | | | |
Collapse
|
112
|
Malik MT, O'Toole MG, Casson LK, Thomas SD, Bardi GT, Reyes-Reyes EM, Ng CK, Kang KA, Bates PJ. AS1411-conjugated gold nanospheres and their potential for breast cancer therapy. Oncotarget 2016; 6:22270-81. [PMID: 26045302 PMCID: PMC4673162 DOI: 10.18632/oncotarget.4207] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 05/22/2015] [Indexed: 12/16/2022] Open
Abstract
AS1411 is a quadruplex-forming DNA oligonucleotide that functions as an aptamer to target nucleolin, a protein present on the surface of cancer cells. Clinical trials of AS1411 have indicated it is well tolerated with evidence of therapeutic activity, but improved pharmacology and potency may be required for optimal efficacy. In this report, we describe how conjugating AS1411 to 5 nm gold nanospheres influences its activities in vitro and in vivo. We find that the AS1411-linked gold nanospheres (AS1411-GNS) are stable in aqueous and serum-containing solutions. Compared to unconjugated AS1411 or GNS linked to control oligonucleotides, AS1411-GNS have superior cellular uptake and markedly increased antiproliferative/cytotoxic effects. Similar to AS1411, AS1411-GNS show selectivity for cancer cells compared to non-malignant cells. In a mouse model of breast cancer, systemic administration of AS1411-GNS could completely inhibit tumor growth with no signs of toxicity. These results suggest AS1411-GNS are promising candidates for clinical translation.
Collapse
Affiliation(s)
- Mohammad T Malik
- Departments of Medicine, University of Louisville, Louisville, Kentucky, USA.,Departments of the Molecular Targets Group of the James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA
| | - Martin G O'Toole
- Departments of Bioengineering, University of Louisville, Louisville, Kentucky, USA
| | - Lavona K Casson
- Departments of Medicine, University of Louisville, Louisville, Kentucky, USA.,Departments of the Molecular Targets Group of the James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA
| | - Shelia D Thomas
- Departments of Medicine, University of Louisville, Louisville, Kentucky, USA.,Departments of the Molecular Targets Group of the James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA
| | - Gina T Bardi
- Departments of Medicine, University of Louisville, Louisville, Kentucky, USA.,Departments of the Molecular Targets Group of the James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA
| | - Elsa Merit Reyes-Reyes
- Departments of Medicine, University of Louisville, Louisville, Kentucky, USA.,Departments of the Molecular Targets Group of the James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA
| | - Chin K Ng
- Departments of Radiology, University of Louisville, Louisville, Kentucky, USA
| | - Kyung A Kang
- Departments of Chemical Engineering, University of Louisville, Louisville, Kentucky, USA
| | - Paula J Bates
- Departments of Medicine, University of Louisville, Louisville, Kentucky, USA.,Departments of the Molecular Targets Group of the James Graham Brown Cancer Center, University of Louisville, Louisville, Kentucky, USA
| |
Collapse
|
113
|
Gupta BK, Singh S, Kumar P, Lee Y, Kedawat G, Narayanan TN, Vithayathil SA, Ge L, Zhan X, Gupta S, Martí AA, Vajtai R, Ajayan PM, Kaipparettu BA. Bifunctional Luminomagnetic Rare-Earth Nanorods for High-Contrast Bioimaging Nanoprobes. Sci Rep 2016; 6:32401. [PMID: 27585638 PMCID: PMC5009349 DOI: 10.1038/srep32401] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 08/04/2016] [Indexed: 01/16/2023] Open
Abstract
Nanoparticles exhibiting both magnetic and luminescent properties are need of the hour for many biological applications. A single compound exhibiting this combination of properties is uncommon. Herein, we report a strategy to synthesize a bifunctional luminomagnetic Gd2-xEuxO3 (x = 0.05 to 0.5) nanorod, with a diameter of ~20 nm and length in ~0.6 μm, using hydrothermal method. Gd2O3:Eu(3+) nanorods have been characterized by studying its structural, optical and magnetic properties. The advantage offered by photoluminescent imaging with Gd2O3:Eu(3+) nanorods is that this ultrafine nanorod material exhibits hypersensitive intense red emission (610 nm) with good brightness (quantum yield more than 90%), which is an essential parameter for high-contrast bioimaging, especially for overcoming auto fluorescent background. The utility of luminomagnetic nanorods for biological applications in high-contrast cell imaging capability and cell toxicity to image two human breast cancer cell lines T47D and MDA-MB-231 are also evaluated. Additionally, to understand the significance of shape of the nanostructure, the photoluminescence and paramagnetic characteristic of Gd2O3:Eu(3+) nanorods were compared with the spherical nanoparticles of Gd2O3:Eu(3+).
Collapse
Affiliation(s)
- Bipin Kumar Gupta
- Luminescent Materials and Devices Group, Materials Physics and Engineering Division, CSIR- National Physical Laboratory, Dr K S Krishnan Road, New Delhi, 110012, India
| | - Satbir Singh
- Luminescent Materials and Devices Group, Materials Physics and Engineering Division, CSIR- National Physical Laboratory, Dr K S Krishnan Road, New Delhi, 110012, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory Campus, Dr K S Krishnan Road, New Delhi 110012, India
| | - Pawan Kumar
- Luminescent Materials and Devices Group, Materials Physics and Engineering Division, CSIR- National Physical Laboratory, Dr K S Krishnan Road, New Delhi, 110012, India
- Academy of Scientific and Innovative Research (AcSIR), CSIR-National Physical Laboratory Campus, Dr K S Krishnan Road, New Delhi 110012, India
| | - Yean Lee
- Department of Material Science and Nano Engineering Rice University, Houston, TX 77005, USA
| | - Garima Kedawat
- Department of Physics, Kalindi College, University of Delhi, New Delhi, 110008, India
| | - Tharangattu N. Narayanan
- TIFR- Center for Interdisciplinary sciences, Tata Institute fundamental research, Hydrabad-500075, India
| | | | - Liehui Ge
- Department of Material Science and Nano Engineering Rice University, Houston, TX 77005, USA
| | - Xiaobo Zhan
- Department of Material Science and Nano Engineering Rice University, Houston, TX 77005, USA
| | - Sarika Gupta
- National Institute of Immunology, Aruna Aseaf Ali Marg, J. N. U. Complex, New Delhi-110067, India
| | - Angel A. Martí
- Department of Chemistry and Bioengineering, Rice University, Houston, Texas 77005, USA
| | - Robert Vajtai
- Department of Material Science and Nano Engineering Rice University, Houston, TX 77005, USA
| | - Pulickel M. Ajayan
- Department of Material Science and Nano Engineering Rice University, Houston, TX 77005, USA
| | - Benny Abraham Kaipparettu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
- Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX 77030, USA
| |
Collapse
|
114
|
Shrivastava G, Hyodo M, Yoshimura SH, Akita H, Harashima H. Identification of a Nucleoporin358-Specific RNA Aptamer for Use as a Nucleus-Targeting Liposomal Delivery System. Nucleic Acid Ther 2016; 26:286-298. [PMID: 27548508 DOI: 10.1089/nat.2016.0604] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
An active targeting drug delivery system that targets the nucleus could solve the problem of the treatment of genetic disorders through gene delivery, but it has met with limited success. The purpose of this study was to establish an RNA aptamer-modified nucleus-targeting liposomal carrier system referred to as NupApt-liposomes. RNA aptamers against the Nup358 protein are prepared using a newly established Protein SELEX method. After confirming aptamer binding to the recombinant protein, an aptamer-lipid conjugate (Apt-PEG-DSPE) was prepared. Aptamer-modified liposomes and simple polyethylene glycol (PEG) liposomes were prepared to check its ability to bind to isolated nuclei. Confocal studies indicated that the aptamer-modified liposomes had the ability to bind to isolated nuclei, whereas PEG-liposomes showed only weak binding. Confocal laser scanning microscopy studies of inhibition assays also supported the above conclusion. The dissociation constant of the Nucleoporin358-specific aptamer referred to as NupApt01 and NupApt02 were 36 and 70 nM, respectively. Finally, with aptamer-modified liposomes, gene expression studies showed a two times better gene expression in NupApt-liposome-treated nuclei in comparison to that of PEG-liposomes. This represents the first artificial RNA aptamer-modified liposomes promoting the specific binding of a nanocarrier to the nucleus, thus improving gene expression in comparison to PEG-liposomes.
Collapse
Affiliation(s)
- Garima Shrivastava
- 1 Laboratory of Innovative Nanomedicine, Faculty of Pharmaceutical Sciences, Hokkaido University , Sapporo, Japan
| | - Mamoru Hyodo
- 1 Laboratory of Innovative Nanomedicine, Faculty of Pharmaceutical Sciences, Hokkaido University , Sapporo, Japan
| | - Shige H Yoshimura
- 2 Laboratory of Plasma Membrane and Nuclear Signaling, Graduate School of Biostudies, Kyoto University , Kyoto, Japan
| | - Hidetaka Akita
- 3 Laboratory for Molecular Design of Pharmaceutics, Faculty of Pharmaceutical Sciences, Hokkaido University , Sapporo, Japan
| | - Hideyoshi Harashima
- 1 Laboratory of Innovative Nanomedicine, Faculty of Pharmaceutical Sciences, Hokkaido University , Sapporo, Japan .,3 Laboratory for Molecular Design of Pharmaceutics, Faculty of Pharmaceutical Sciences, Hokkaido University , Sapporo, Japan
| |
Collapse
|
115
|
Gao F, Ma N, Zhou H, Wang Q, Zhang H, Wang P, Hou H, Wen H, Li L. Zinc oxide nanoparticles-induced epigenetic change and G2/M arrest are associated with apoptosis in human epidermal keratinocytes. Int J Nanomedicine 2016; 11:3859-74. [PMID: 27570453 PMCID: PMC4986971 DOI: 10.2147/ijn.s107021] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
As an engineered nanomaterial, zinc oxide nanoparticles (ZnO NPs) are used frequently in biological applications and can make contact with human skin. Here, we systematically investigated the effects of ZnO NPs on non-tumorigenic human epidermal keratinocytes, which were used as a test model for this in vitro study, at the epigenetic and molecular levels. Our results showed that ZnO NPs induced cell cycle arrest at the G2/M checkpoint before the viability of human epidermal keratinocytes was reduced, which was associated with the chromatin changes at the epigenetic level, including increased methylation of histone H3K9 and decreased acetylation of histone H4K5 accompanied by chromatin condensation at 24 hours. The mRNA expression of the methyltransferase genes G9a and GLP was also increased upon treatment with ZnO NPs, and the acetyltransferase genes GCN5, P300, and CBP were downregulated. Reactive oxygen species were found to be more abundant after treatment with ZnO NPs for 6 hours, and DNA damage was observed at 24 hours. Transmission electron microscopy and flow cytometry confirmed that ZnO NPs were absorbed into the cell when they were added to the medium. Apoptotic human epidermal keratinocytes were detected, and the expression of the proapoptotic genes Bax, Noxa, and Puma increased significantly, while the expression of the antiapoptotic gene Bcl-xl decreased 24 hours after exposure to ZnO NPs. These findings suggest that the ZnO NPs induced cell cycle arrest at G2/M, which was associated with epigenetic changes and accompanied by p53-Bax mitochondrial pathway-mediated apoptosis.
Collapse
Affiliation(s)
- Fei Gao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Ningjie Ma
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Hong Zhou
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Qing Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Hao Zhang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Pu Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Haoli Hou
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Huan Wen
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Lijia Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, People's Republic of China
| |
Collapse
|
116
|
Ma X, Gong N, Zhong L, Sun J, Liang XJ. Future of nanotherapeutics: Targeting the cellular sub-organelles. Biomaterials 2016; 97:10-21. [DOI: 10.1016/j.biomaterials.2016.04.026] [Citation(s) in RCA: 123] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Revised: 04/02/2016] [Accepted: 04/20/2016] [Indexed: 11/25/2022]
|
117
|
Ma DD, Yang WX. Engineered nanoparticles induce cell apoptosis: potential for cancer therapy. Oncotarget 2016; 7:40882-40903. [PMID: 27056889 PMCID: PMC5130051 DOI: 10.18632/oncotarget.8553] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/28/2016] [Indexed: 01/09/2023] Open
Abstract
Engineered nanoparticles (ENPs) have been widely applied in industry, commodities, biology and medicine recently. The potential for many related threats to human health has been highlighted. ENPs with their sizes no larger than 100 nm are able to enter the human body and accumulate in organs such as brain, liver, lung, testes, etc, and cause toxic effects. Many references have studied ENP effects on the cells of different organs with related cell apoptosis noted. Understanding such pathways towards ENP induced apoptosis may aid in the design of effective cancer targeting ENP drugs. Such ENPs can either have a direct effect towards cancer cell apoptosis or can be used as drug delivery agents. Characteristics of ENPs, such as sizes, shape, forms, charges and surface modifications are all seen to play a role in determining their toxicity in target cells. Specific modifications of such characteristics can be applied to reduce ENP bioactivity and thus alleviate unwanted cytotoxicity, without affecting the intended function. This provides an opportunity to design ENPs with minimum toxicity to non-targeted cells.
Collapse
Affiliation(s)
- Dan-Dan Ma
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| | - Wan-Xi Yang
- The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang, China
| |
Collapse
|
118
|
Solveyra EG, Szleifer I. What is the role of curvature on the properties of nanomaterials for biomedical applications? WILEY INTERDISCIPLINARY REVIEWS. NANOMEDICINE AND NANOBIOTECHNOLOGY 2016; 8:334-54. [PMID: 26310432 PMCID: PMC4769694 DOI: 10.1002/wnan.1365] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 07/03/2015] [Accepted: 07/22/2015] [Indexed: 12/15/2022]
Abstract
The use of nanomaterials for drug delivery and theranostics applications is a promising paradigm in nanomedicine, as it brings together the best features of nanotechnolgy, molecular biology, and medicine. To fully exploit the synergistic potential of such interdisciplinary strategy, a comprehensive description of the interactions at the interface between nanomaterials and biological systems is not only crucial, but also mandatory. Routine strategies to engineer nanomaterial-based drugs comprise modifying their surface with biocompatible and targeting ligands, in many cases resorting to modular approaches that assume additive behavior. However, emergent behavior can be observed when combining confinement and curvature. The final properties of functionalized nanomaterials become dependent not only on the properties of their constituents but also on the geometry of the nano-bio interface, and on the local molecular environment. Modularity no longer holds, and the coupling between interactions, chemical equilibrium, and molecular organization has to be directly addressed in order to design smart nanomaterials with controlled spatial functionalization envisioning optimized biomedical applications. Nanoparticle's curvature becomes an integral part of the design strategy, enabling to control and engineer the chemical and surface properties with molecular precision. Understanding how nanoparticle size, morphology, and surface chemistry are interrelated will put us one step closer to engineering nanobiomaterials capable of mimicking biological structures and their behaviors, paving the way into applications and the possibility to elucidate the use of curvature by biological systems. WIREs Nanomed Nanobiotechnol 2016, 8:334-354. doi: 10.1002/wnan.1365 For further resources related to this article, please visit the WIREs website.
Collapse
Affiliation(s)
- Estefania Gonzalez Solveyra
- Department of Biomedical Engineering, Department of Chemistry and Chemistry of Life Processes Institute, Northwestern University
| | - Igal Szleifer
- Department of Biomedical Engineering, Department of Chemistry and Chemistry of Life Processes Institute, Northwestern University
| |
Collapse
|
119
|
He W, Frueh J, Wu Z, He Q. Leucocyte Membrane-Coated Janus Microcapsules for Enhanced Photothermal Cancer Treatment. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:3637-44. [PMID: 27023433 DOI: 10.1021/acs.langmuir.5b04762] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Polyelectrolyte multilayer (PEM) capsules are promising candidates for many kinds of cancer detection and treatment but are usually intended to deliver cargo to specific sites or to destroy cancer cells based on photothermal effects from the outside. In this publication we prove that it is possible to kill cancer cells from the inside based on phagocytosed PEM capsules. In addition we show how to open the cells and bring the PEM capsules to the surface of cancer cells based on photothermal effects and rapid evaporation of water. Diffusion-based temperature determinations of the photothermal effect up to the evaporation temperature of water are presented.
Collapse
Affiliation(s)
- Wenping He
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Micro/Nanotechnology Research Centre, Harbin Institute of Technology , Yi Kuang Street 2, Harbin 150080, China
| | - Johannes Frueh
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Micro/Nanotechnology Research Centre, Harbin Institute of Technology , Yi Kuang Street 2, Harbin 150080, China
| | - Zhenwei Wu
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Micro/Nanotechnology Research Centre, Harbin Institute of Technology , Yi Kuang Street 2, Harbin 150080, China
| | - Qiang He
- Key Laboratory of Microsystems and Microstructures Manufacturing, Ministry of Education, Micro/Nanotechnology Research Centre, Harbin Institute of Technology , Yi Kuang Street 2, Harbin 150080, China
| |
Collapse
|
120
|
Li X, Zhu X, Qiu L. Constructing aptamer anchored nanovesicles for enhanced tumor penetration and cellular uptake of water soluble chemotherapeutics. Acta Biomater 2016; 35:269-79. [PMID: 26873366 DOI: 10.1016/j.actbio.2016.02.012] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 02/01/2016] [Accepted: 02/08/2016] [Indexed: 12/20/2022]
Abstract
Polymersomes represent a promising pharmaceutical vehicle for the delivery of hydrophilic therapeutic agents. However, modification of polymersomes with molecules that confer targeting functions remains challenging because of the strict requirements regarding the weight fractions of the hydrophilic and hydrophobic block polymers. In this study, based on the compatibility between cholesterol and polymeric carriers, polymersomes self-assembled by amphiphilic graft polyphosphazenes were endowed with a targeting function by incorporating the cholesterol-linked aptamer through a simple dialysis method. The aqueous interior of the polymersomes was employed to encapsulate water-soluble doxorubicin hydrochloride. In vivo experiments in tumor-bearing mice showed that the aptamer-anchored vesicle targeted accumulation at the tumor site, favorable penetration through tumor tissue, and incremental endocytosis into tumor cells. Correspondingly, the aptamer-anchored vesicle decreased systemic toxicity and effectively suppressed the growth of subcutaneous MCF-7 xenografts. These findings suggested that vesicles modified with targeted groups via hydrophobic supermolecular interactions could provide a platform for selective delivery of hydrophilic drug. STATEMENT OF SIGNIFICANCE Polymersomes have represented a promising type of pharmaceutical vehicles due to their predominant physical properties. However, it is still a challenge to endow polymersomes with active target function because of strict requirements of the weight fractions of hydrophilic polymer block to hydrophobic one. In this research, by taking advantage of the supermolecular interactions between amphiphilic graft polyphosphazene and cholesterol which was linked to aptamer AS1411, we prepared a targeted functional polymersome (PEP-DOX·HCl-Ap) through a simple method with high loading of water soluble anti-cancer drug doxorubicin hydrochloride. The in vivo experiments in MCF-7 tumor-bearing mice demonstrated several advantages of PEP-DOX·HCl-Ap vesicle such as prolonged circulation time in blood, targeted accumulation at tumor site, permeation through the tumor tissue and incremental endocytosis by tumor cells, which consequently resulted in the significantly improved anti-cancer efficacy. Moreover, this novel polymersome designed in this study has built a research platform to achieve targeted delivery of hydrophilic chemotherapeutics for cancer therapy.
Collapse
Affiliation(s)
- Xin Li
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yu-Hang-Tang Road, Hangzhou 310058, China
| | - Xiumei Zhu
- College of Pharmaceutical Sciences, Zhejiang University, 866 Yu-Hang-Tang Road, Hangzhou 310058, China
| | - Liyan Qiu
- Ministry of Education (MOE) Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, 38 Zheda Road, Hangzhou 310027, China; Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
| |
Collapse
|
121
|
Tammam SN, Azzazy HME, Lamprecht A. How successful is nuclear targeting by nanocarriers? J Control Release 2016; 229:140-153. [PMID: 26995759 DOI: 10.1016/j.jconrel.2016.03.022] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 03/12/2016] [Accepted: 03/14/2016] [Indexed: 12/22/2022]
Abstract
The nucleus is ultimately the final target for many therapeutics treating various disorders including cancers, heart dysfunction and brain disorders. Owing to their specialized cell uptake and trafficking mechanisms, nanoparticles (NPs) allow drug targeting where degradation sensitive therapeutics could be delivered to their target tissues and cell in active form and sufficient concentration. However, it has recently become increasingly obvious that cytosolic internalization of a drug molecule does not entail its interaction with its subcellular target and hence careful nanoparticle design and optimization is required to enable nuclear targeting. This review, discusses the barriers to NP nuclear delivery; crossing the cell membrane, endo/lysosomal escape, cytoplasmic trafficking and finally nuclear entry focusing on how NP synthesis and modification could allow for bypassing each of the aforementioned barriers and successfully reaching the nucleus. Examples of nuclear targeted NPs are also discussed, stressing on the critical aspects of nuclear targeting and pointing out how the disease state might change the normal NP path and how such change could be exploited to increase efficiency of nuclear targeting. Finally, the criteria set for the evaluation of nanocarriers for nuclear delivery are discussed highlighting that quantitative rather than qualitative evaluation is required to evaluate how successful nanocarriers for nuclear delivery are, particularly with regards to the amount of drug delivered and released in the nucleus.
Collapse
Affiliation(s)
- Salma N Tammam
- Laboratory of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121, Germany; Department of Chemistry, The American University in Cairo, 11835, Egypt.
| | - Hassan M E Azzazy
- Department of Chemistry, The American University in Cairo, 11835, Egypt
| | - Alf Lamprecht
- Laboratory of Pharmaceutical Technology and Biopharmaceutics, University of Bonn, 53121, Germany; Laboratory of Pharmaceutical Engineering, University of Franche-Comté, Besançon 25000, France
| |
Collapse
|
122
|
Wu Q, Sun Y, Ma P, Zhang D, Li S, Wang X, Song D. Gold nanostar-enhanced surface plasmon resonance biosensor based on carboxyl-functionalized graphene oxide. Anal Chim Acta 2016; 913:137-44. [DOI: 10.1016/j.aca.2016.01.063] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 01/25/2016] [Accepted: 01/30/2016] [Indexed: 12/29/2022]
|
123
|
Pronschinske A, Pedevilla P, Coughlin B, Murphy CJ, Lucci FR, Payne MA, Gellman AJ, Michaelides A, Sykes ECH. Atomic-Scale Picture of the Composition, Decay, and Oxidation of Two-Dimensional Radioactive Films. ACS NANO 2016; 10:2152-2158. [PMID: 26735687 DOI: 10.1021/acsnano.5b06640] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Two-dimensional radioactive (125)I monolayers are a recent development that combines the fields of radiochemistry and nanoscience. These Au-supported monolayers show great promise for understanding the local interaction of radiation with 2D molecular layers, offer different directions for surface patterning, and enhance the emission of chemically and biologically relevant low-energy electrons. However, the elemental composition of these monolayers is in constant flux due to the nuclear transmutation of (125)I to (125)Te, and their precise composition and stability under ambient conditions has yet to be elucidated. Unlike I, which is stable and unreactive when bound to Au, the newly formed Te atoms would be expected to be more reactive. We have used electron emission and X-ray photoelectron spectroscopy (XPS) to quantify the emitted electron energies and to track the film composition in vacuum and the effect of exposure to ambient conditions. Our results reveal that the Auger electrons emitted during the ultrafast radioactive decay process have a kinetic energy corresponding to neutral Te. By combining XPS and scanning tunneling microscopy experiments with density functional theory, we are able to identify the reaction of newly formed Te to TeO2 and its subsequent dimerization. The fact that the Te2O4 units stay intact during major lateral rearrangement of the monolayer illustrates their stability. These results provide an atomic-scale picture of the composition and mobility of surface species in a radioactive monolayer as well as an understanding of the stability of the films under ambient conditions, which is a critical aspect in their future applications.
Collapse
Affiliation(s)
- Alex Pronschinske
- Department of Chemistry, Tufts University , 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Philipp Pedevilla
- Thomas Young Centre, London Centre for Nanotechnology and Department of Chemistry, University College London , London WC1E 6BT, United Kingdom
| | - Benjamin Coughlin
- Department of Chemistry, Tufts University , 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Colin J Murphy
- Department of Chemistry, Tufts University , 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Felicia R Lucci
- Department of Chemistry, Tufts University , 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| | - Matthew A Payne
- Department of Chemical Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Andrew J Gellman
- Department of Chemical Engineering, Carnegie Mellon University , Pittsburgh, Pennsylvania 15213, United States
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology and Department of Chemistry, University College London , London WC1E 6BT, United Kingdom
| | - E Charles H Sykes
- Department of Chemistry, Tufts University , 62 Talbot Avenue, Medford, Massachusetts 02155, United States
| |
Collapse
|
124
|
Tailored-CuO-nanowire decorated with folic acid mediated coupling of the mitochondrial-ROS generation and miR425-PTEN axis in furnishing potent anti-cancer activity in human triple negative breast carcinoma cells. Biomaterials 2016; 76:115-32. [DOI: 10.1016/j.biomaterials.2015.10.044] [Citation(s) in RCA: 64] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 10/13/2015] [Accepted: 10/18/2015] [Indexed: 01/31/2023]
|
125
|
Saverot S, Geng X, Leng W, Vikesland PJ, Grove TZ, Bickford LR. Facile, tunable, and SERS-enhanced HEPES gold nanostars. RSC Adv 2016. [DOI: 10.1039/c6ra00450d] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The facile, green synthesis of gold nanostars (AuNSs) with tunable branch lengths for SERS applications.
Collapse
Affiliation(s)
- S. Saverot
- Department of Biological Systems Engineering
- Virginia Tech
- Blacksburg
- USA
| | - X. Geng
- Department of Chemistry
- Virginia Tech
- Blacksburg
- USA
| | - W. Leng
- Department of Civil and Environmental Engineering
- Virginia Tech
- Blacksburg
- USA
| | - P. J. Vikesland
- Department of Civil and Environmental Engineering
- Virginia Tech
- Blacksburg
- USA
- Virginia Tech Center for Sustainable Nanotechnology
| | - T. Z. Grove
- Department of Chemistry
- Virginia Tech
- Blacksburg
- USA
| | - L. R. Bickford
- Virginia Tech Center for Sustainable Nanotechnology
- Virginia Tech
- Blacksburg
- USA
- Department of Biomedical Engineering and Mechanics
| |
Collapse
|
126
|
|
127
|
Heo JH, Kim KI, Cho HH, Lee JW, Lee BS, Yoon S, Park KJ, Lee S, Kim J, Whang D, Lee JH. Ultrastable-Stealth Large Gold Nanoparticles with DNA Directed Biological Functionality. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:13773-82. [PMID: 26638691 DOI: 10.1021/acs.langmuir.5b03534] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The stability of gold nanoparticles (AuNPs) in biological samples is very important for their biomedical applications. Although various molecules such as polystyrenesulfonate (PSS), phosphine, DNA, and polyethylene glycol (PEG) have been used to stabilize AuNPs, it is still very difficult to stabilize large AuNPs. As a result, biomedical applications of large (30-100 nm) AuNPs are limited, even though they possess more favorable optical properties and are easier to be taken up by cells than smaller AuNPs. To overcome this limitation, we herein report a novel method of preparing large (30-100 nm) AuNPs with a high colloidal stability and facile chemical or biological functionality, via surface passivation with an amphiphilic polymer polyvinylpyrrolidone (PVP). This PVP passivation results in an extraordinary colloidal stability for 13, 30, 50, 70, and 100 nm AuNPs to be stabilized in PBS for at least 3 months. More importantly, the PVP capped AuNPs (AuNP-PVP) were also resistant to protein adsorption in the presence of serum containing media and exhibit a negligible cytotoxicity. The AuNP-PVPs functionalized with a DNA aptamer AS1411 remain biologically active, resulting in significant increase in the uptake of the AuNPs (∼12,200 AuNPs per cell) in comparison with AuNPs capped by a control DNA of the same length. The novel method developed in this study to stabilize large AuNPs with high colloidal stability and biological activity will allow much wider applications of these large AuNPs for biomedical applications, such as cellular imaging, molecular diagnosis, and targeted therapy.
Collapse
Affiliation(s)
- Jun Hyuk Heo
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Kyung-Il Kim
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Hui Hun Cho
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Jin Woong Lee
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Byoung Sang Lee
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Seokyoung Yoon
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Kyung Jin Park
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Seungwoo Lee
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Jaeyun Kim
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Dongmok Whang
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| | - Jung Heon Lee
- School of Advanced Materials Science and Engineering, ‡SKKU Advanced Institute of Nanotechnology (SAINT), and §School of Chemical Engineering, Sungkyunkwan University (SKKU) , Suwon, South Korea , 16419
| |
Collapse
|
128
|
Hua Y, Chandra K, Dam DHM, Wiederrecht GP, Odom TW. Shape-Dependent Nonlinear Optical Properties of Anisotropic Gold Nanoparticles. J Phys Chem Lett 2015; 6:4904-8. [PMID: 26595327 DOI: 10.1021/acs.jpclett.5b02263] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
This Letter reports the shape-dependent third-order nonlinear optical properties of anisotropic gold nanoparticles. We characterized the nonlinear absorption coefficients of nanorods, nanostars, and nanoshells using femtosecond Z-scan measurements. By comparing nanoparticle solutions with a similar linear extinction at the laser excitation wavelength, we separated shape effects from that of the localized surface plasmon wavelength. We found that the nonlinear response depended on particle shape. Using pump-probe spectroscopy, we measured the ultrafast transient response of nanoparticles, which supported the strong saturable absorption observed in nanorods and weak nonlinear response in nanoshells. We found that the magnitude of saturable absorption as well as the ultrafast spectral responses of nanoparticles were affected by the linear absorption of the nanoparticles.
Collapse
Affiliation(s)
| | | | | | - Gary P Wiederrecht
- Center for Nanoscale Materials, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | | |
Collapse
|
129
|
Cytotoxic Effect of Palladium Nanoparticles Synthesized From Syzygium aromaticum Aqueous Extracts and Induction of Apoptosis in Cervical Carcinoma. ACTA ACUST UNITED AC 2015. [DOI: 10.1007/s40011-015-0678-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
130
|
Pallavicini P, Bernhard C, Chirico G, Dacarro G, Denat F, Donà A, Milanese C, Taglietti A. Gold nanostars co-coated with the Cu(II) complex of a tetraazamacrocyclic ligand. Dalton Trans 2015; 44:5652-61. [PMID: 25708886 DOI: 10.1039/c4dt03042g] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The twelve-membered tetraazamacrocyclic ligand L1 bears an appended lipoic acid unit, whose disulphide ring is an efficient grafting moiety for the surface of gold nanostars (GNS). The GNS that were used featured a localized surface plasmon resonance (LSPR) absorption at ∼800 nm, i.e. in the near infrared (NIR). We investigated different approaches for coating them with the Cu(2+) complex of L1. While the direct reaction of [CuL1](2+) with as-prepared GNS led to aggregation, an initial coating step with polyethyleneglycol-thiol (PEG-SH) was found to be advantageous. Displacement reactions were carried out on pegylated GNS either with [CuL1](2+), directly generating [Cun(L1@GNS)](2n+), or with void L1, thus obtaining @GNS that coordinates Cu(2+) in a second step. In both cases, even with a large excess of the competing disulphide moiety, only partial displacement of PEG-SH is observed, obtaining ca. 500-1500 [CuL1](2+) per GNS depending on the conditions, with PEG-SH remaining in the [Cun(L1@GNS)](2n+) hybrids and imparting them with remarkable stability. Comparison of the photothermal and two-photon luminescence (TPL) properties of the GNS between the pegylated GNS and [Cun(L1@GNS)](2n+) revealed that the grafted copper complex does not change them to any extent. Finally, the stability against demetallation and transmetallation of the complexes, as well as the fast kinetics of complexation of the monodispersed macrocycle and of L1@GNS, have been examined, suggesting [Cun(L1@GNS)](2n+) as a device capable of TPL optical tracking and NIR photothermal therapy and as a possible agent for PET imaging.
Collapse
|
131
|
Altındal DÇ, Gümüşderelioğlu M. Melatonin releasing PLGA micro/nanoparticles and their effect on osteosarcoma cells. J Microencapsul 2015; 33:53-63. [PMID: 26605784 DOI: 10.3109/02652048.2015.1115901] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Melatonin loaded poly(D,L-lactide-co-glycolide) (PLGA) nanoparticles and microparticles in the diameter of ∼200 nm and 3.5 μm, respectively, were prepared by emulsion-diffusion-evaporation method. Melatonin entrapment into the particles was significantly improved with the addition of 0.2% (w/v) melatonin into the aqueous phase and encapsulation efficiencies were found as 14 and 27% for nanoparticles and microparticles, respectively. At the end of 40 days, ∼70% of melatonin was released from both of particles, with high burst release. Both blank and melatonin loaded PLGA nanoparticles caused toxic effect on the MG-63 cells due to their uptake by the cells. However, when 0.05 mg microparticle that is carrying ∼1.7 μg melatonin was added to the cm(2) of culture, inhibitory effect of melatonin on the cells were obviously observed. The results would provide an expectation about the usage of melatonin as an adjunct to the routine chemotherapy of osteosarcoma by encapsulating it into a polymeric carrier system.
Collapse
Affiliation(s)
- Damla Çetin Altındal
- a Chemical Engineering Department , Hacettepe University , Beytepe , Ankara , Turkey
| | | |
Collapse
|
132
|
Borghei YS, Hosseini M, Dadmehr M, Hosseinkhani S, Ganjali MR, Sheikhnejad R. Visual detection of cancer cells by colorimetric aptasensor based on aggregation of gold nanoparticles induced by DNA hybridization. Anal Chim Acta 2015; 904:92-7. [PMID: 26724767 DOI: 10.1016/j.aca.2015.11.026] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 11/16/2015] [Accepted: 11/18/2015] [Indexed: 10/22/2022]
Abstract
A simple but highly sensitive colorimetric method was developed to detect cancer cells based on aptamer-cell interaction. Cancer cells were able to capture nucleolin aptamers (AS 1411) through affinity interaction between AS 1411 and nucleolin receptors that are over expressed in cancer cells, The specific binding of AS 1411 to the target cells triggered the removal of aptamers from the solution. Therefore no aptamer remained in the solution to hybridize with complementary ssDNA-AuNP probes as a result the solution color is red. In the absence of target cells or the presence of normal cells, ssDNA-AuNP probes and aptamers were coexisted in solution and the aptamers assembled DNA-AuNPs, produced a purple solution. UV-vis spectrometry demonstrated that this hybridization-based method exhibited selective colorimetric responses to the presence or absence of target cells, which is detectable with naked eye. The linear response for MCF-7 cells in a concentration range from 10 to 10(5) cells was obtained with a detection limit of 10 cells. The proposed method could be extended to detect other cells and showed potential applications in cancer cell detection and early cancer diagnosis.
Collapse
Affiliation(s)
- Yasaman-Sadat Borghei
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran
| | - Morteza Hosseini
- Department of Life Science Engineering, Faculty of New Sciences & Technologies, University of Tehran, Tehran, Iran.
| | | | | | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology & Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | |
Collapse
|
133
|
Lee H, Dam DHM, Ha JW, Yue J, Odom TW. Enhanced Human Epidermal Growth Factor Receptor 2 Degradation in Breast Cancer Cells by Lysosome-Targeting Gold Nanoconstructs. ACS NANO 2015; 9:9859-67. [PMID: 26335372 PMCID: PMC5279887 DOI: 10.1021/acsnano.5b05138] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
This paper describes how gold nanoparticle nanoconstructs can enhance anticancer effects of lysosomal targeting aptamers in breast cancer cells. Nanoconstructs consisting of anti-HER2 aptamer (human epidermal growth factor receptor 2, HApt) densely grafted on gold nanostars (AuNS) first targeted HER2 and then were internalized via HER2-mediated endocytosis. As incubation time increased, the nanoconstruct complexes were found in vesicular structures, starting from early endosomes to lysosomes as visualized by confocal fluorescence and differential interference contrast microscopy. Within the target organelle, lysosomes, HER2 was degraded by enzymes at low pH, which resulted in apoptosis. At specific time points related to the doubling time of the cancer cells, we found that accumulation of HER2-HApt-AuNS complexes in lysosomes, lysosomal activity, and lysosomal degradation of HER2 were positively correlated. Increased HER2 degradation by HApt-AuNS triggered cell death and cell cycle arrest in the G0/G1 phase inhibition of cell proliferation. This work shows how a perceived disadvantage of nanoparticle-based therapeutics-the inability of nanoconstructs to escape from vesicles and thus induce a biological response-can be overcome by both targeting lysosomes and exploiting lysosomal degradation of the biomarkers.
Collapse
Affiliation(s)
| | - Duncan Hieu M Dam
- Department of Dermatology, Northwestern University , 676 N. St. Clair Street, Chicago, Illinois 60611, United States
| | | | | | | |
Collapse
|
134
|
Tabatabaei M, Wallace GQ, Caetano FA, Gillies ER, Ferguson SSG, Lagugné-Labarthet F. Controlled positioning of analytes and cells on a plasmonic platform for glycan sensing using surface enhanced Raman spectroscopy. Chem Sci 2015; 7:575-582. [PMID: 28791107 PMCID: PMC5519955 DOI: 10.1039/c5sc03332b] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 10/13/2015] [Indexed: 12/22/2022] Open
Abstract
Controlled analyte and cell positioning is enabled on a plasmonic platform with patterned fluorocarbon polymer thin films for SERS-based glycan sensing.
The rise of molecular plasmonics and its application to ultrasensitive spectroscopic measurements has been enabled by the rational design and fabrication of a variety of metallic nanostructures. Advanced nano and microfabrication methods are key to the development of such structures, allowing one to tailor optical fields at the sub-wavelength scale, thereby optimizing excitation conditions for ultrasensitive detection. In this work, the control of both analyte and cell positioning on a plasmonic platform is enabled using nanofabrication methods involving patterning of fluorocarbon (FC) polymer (C4F8) thin films on a plasmonic platform fabricated by nanosphere lithography (NSL). This provides the possibility to probe biomolecules of interest in the vicinity of cells using plasmon-mediated surface enhanced spectroscopies. In this context, we demonstrate the surface enhanced biosensing of glycan expression in different cell lines by surface enhanced Raman spectroscopy (SERS) on these plasmonic platforms functionalized with 4-mercaptophenylboronic acid (4-MPBA) as the Raman reporter. These cell lines include human embryonic kidney (HEK 293), C2C12 mouse myoblasts, and HeLa (Henrietta Lacks) cervical cancer cells. A distinct glycan expression is observed for cancer cells compared to other cell lines by confocal SERS mapping. This suggests the potential application of these versatile SERS platforms for differentiating cancerous from non-cancerous cells.
Collapse
Affiliation(s)
- Mohammadali Tabatabaei
- Department of Chemistry and Center for Advanced Materials and Biomaterials , University of Western Ontario , London , ON , Canada N6A 5B7 . ; ; Tel: +1 519 661 2111 ext. 81006
| | - Gregory Q Wallace
- Department of Chemistry and Center for Advanced Materials and Biomaterials , University of Western Ontario , London , ON , Canada N6A 5B7 . ; ; Tel: +1 519 661 2111 ext. 81006
| | - Fabiana A Caetano
- J. Allyn Taylor Centre for Cell Biology , Robarts Research Institute , Department of Physiology and Pharmacology , University of Western Ontario , 100 Perth Drive St. , London , ON , Canada N6A 5K8
| | - Elizabeth R Gillies
- Department of Chemistry and Center for Advanced Materials and Biomaterials , University of Western Ontario , London , ON , Canada N6A 5B7 . ; ; Tel: +1 519 661 2111 ext. 81006.,Department of Chemical and Biochemical Engineering , The University of Western Ontario , 1151 Richmond Street , London , Ontario , Canada N6A 5B9
| | - Stephen S G Ferguson
- J. Allyn Taylor Centre for Cell Biology , Robarts Research Institute , Department of Physiology and Pharmacology , University of Western Ontario , 100 Perth Drive St. , London , ON , Canada N6A 5K8
| | - François Lagugné-Labarthet
- Department of Chemistry and Center for Advanced Materials and Biomaterials , University of Western Ontario , London , ON , Canada N6A 5B7 . ; ; Tel: +1 519 661 2111 ext. 81006
| |
Collapse
|
135
|
Gallina ME, Zhou Y, Johnson CJ, Harris-Birtill D, Singh M, Zhao H, Ma D, Cass T, Elson DS. Aptamer-conjugated, fluorescent gold nanorods as potential cancer theradiagnostic agents. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2015; 59:324-332. [PMID: 26652380 DOI: 10.1016/j.msec.2015.09.101] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Revised: 09/21/2015] [Accepted: 09/28/2015] [Indexed: 12/17/2022]
Abstract
GNRs are emerging as a new class of probes for theradiagnostic applications thanks to their unique optical properties. However, the achievement of proper nanoconstructs requires the synthesis of highly pure GNRs with well-defined aspect ratio (AR), in addition to extensive surface chemistry modification to provide them with active targeting and, possibly, multifunctionality. In this work, we refined the method of the seed mediated growth and developed a robust procedure for the fabrication of GNRs with specific AR. We also revealed and characterized unexplored aging phenomena that follow the synthesis and consistently alter GNRs' final AR. Such advances appreciably improved the feasibility of GNRs fabrication and offered useful insights on the growth mechanism. We next produced fluorescent, biocompatible, aptamer-conjugated GNRs by performing ligand exchange followed by bioconjugation to anti-cancer oligonucleotide AS1411. In vitro studies showed that our nanoconstructs selectively target cancer cells while showing negligible cytotoxicity. As a result, our aptamer-conjugated GNRs constitute ideal cancer-selective multifunctional probes and promising candidates as photothermal therapy agents.
Collapse
Affiliation(s)
- Maria Elena Gallina
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation and Department of Surgery and Cancer, Imperial College London, UK.
| | - Yu Zhou
- Department of Chemistry, Institute of Biomedical Engineering and Chemical Biology Centre, Imperial College London, UK
| | - Christopher J Johnson
- Department of Chemistry, Institute of Biomedical Engineering and Chemical Biology Centre, Imperial College London, UK
| | - David Harris-Birtill
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation and Department of Surgery and Cancer, Imperial College London, UK
| | - Mohan Singh
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation and Department of Surgery and Cancer, Imperial College London, UK
| | - Hailin Zhao
- Department of Surgery and Cancer, Imperial College London, UK
| | - Daqing Ma
- Department of Surgery and Cancer, Imperial College London, UK
| | - Tony Cass
- Department of Chemistry, Institute of Biomedical Engineering and Chemical Biology Centre, Imperial College London, UK
| | - Daniel S Elson
- Hamlyn Centre for Robotic Surgery, Institute of Global Health Innovation and Department of Surgery and Cancer, Imperial College London, UK
| |
Collapse
|
136
|
Jhaveri A, Torchilin V. Intracellular delivery of nanocarriers and targeting to subcellular organelles. Expert Opin Drug Deliv 2015; 13:49-70. [DOI: 10.1517/17425247.2015.1086745] [Citation(s) in RCA: 87] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
137
|
Pronschinske A, Pedevilla P, Murphy CJ, Lewis EA, Lucci FR, Brown G, Pappas G, Michaelides A, Sykes ECH. Enhancement of low-energy electron emission in 2D radioactive films. NATURE MATERIALS 2015; 14:904-907. [PMID: 26076306 DOI: 10.1038/nmat4323] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 05/07/2015] [Indexed: 06/04/2023]
Abstract
High-energy radiation has been used for decades; however, the role of low-energy electrons created during irradiation has only recently begun to be appreciated. Low-energy electrons are the most important component of radiation damage in biological environments because they have subcellular ranges, interact destructively with chemical bonds, and are the most abundant product of ionizing particles in tissue. However, methods for generating them locally without external stimulation do not exist. Here, we synthesize one-atom-thick films of the radioactive isotope (125)I on gold that are stable under ambient conditions. Scanning tunnelling microscopy, supported by electronic structure simulations, allows us to directly observe nuclear transmutation of individual (125)I atoms into (125)Te, and explain the surprising stability of the 2D film as it underwent radioactive decay. The metal interface geometry induces a 600% amplification of low-energy electron emission (<10 eV; ref. ) compared with atomic (125)I. This enhancement of biologically active low-energy electrons might offer a new direction for highly targeted nanoparticle therapies.
Collapse
Affiliation(s)
- Alex Pronschinske
- Department of Chemistry, Tufts University, 62 Talbot Avenue Medford, Massachusetts 02155, USA
| | - Philipp Pedevilla
- Thomas Young Centre, London Centre for Nanotechnology and Department of Chemistry, University College London, London WC1E 6BT, UK
| | - Colin J Murphy
- Department of Chemistry, Tufts University, 62 Talbot Avenue Medford, Massachusetts 02155, USA
| | - Emily A Lewis
- Department of Chemistry, Tufts University, 62 Talbot Avenue Medford, Massachusetts 02155, USA
| | - Felicia R Lucci
- Department of Chemistry, Tufts University, 62 Talbot Avenue Medford, Massachusetts 02155, USA
| | - Garth Brown
- PerkinElmer, Inc., 331 Treble Cove Road North Billerica, Massachusetts 01862, USA
| | - George Pappas
- PerkinElmer, Inc., 331 Treble Cove Road North Billerica, Massachusetts 01862, USA
| | - Angelos Michaelides
- Thomas Young Centre, London Centre for Nanotechnology and Department of Chemistry, University College London, London WC1E 6BT, UK
| | - E Charles H Sykes
- Department of Chemistry, Tufts University, 62 Talbot Avenue Medford, Massachusetts 02155, USA
| |
Collapse
|
138
|
Niu W, Chua YAA, Zhang W, Huang H, Lu X. Highly Symmetric Gold Nanostars: Crystallographic Control and Surface-Enhanced Raman Scattering Property. J Am Chem Soc 2015; 137:10460-3. [DOI: 10.1021/jacs.5b05321] [Citation(s) in RCA: 216] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Wenxin Niu
- Department
of Chemical and
Biomolecular Engineering, National University of Singapore, 4 Engineering
Drive 4, Singapore 117585
| | - Yi An Alvin Chua
- Department
of Chemical and
Biomolecular Engineering, National University of Singapore, 4 Engineering
Drive 4, Singapore 117585
| | - Weiqing Zhang
- Department
of Chemical and
Biomolecular Engineering, National University of Singapore, 4 Engineering
Drive 4, Singapore 117585
| | - Hejin Huang
- Department
of Chemical and
Biomolecular Engineering, National University of Singapore, 4 Engineering
Drive 4, Singapore 117585
| | - Xianmao Lu
- Department
of Chemical and
Biomolecular Engineering, National University of Singapore, 4 Engineering
Drive 4, Singapore 117585
| |
Collapse
|
139
|
de Puig H, Tam JO, Yen CW, Gehrke L, Hamad-Schifferli K. Extinction Coefficient of Gold Nanostars. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2015; 119:17408-17415. [PMID: 28018519 PMCID: PMC5176261 DOI: 10.1021/acs.jpcc.5b03624] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Gold nanostars (NStars) are highly attractive for biological applications due to their surface chemistry, facile synthesis and optical properties. Here, we synthesize NStars in HEPES buffer at different HEPES/Au ratios, producing NStars of different sizes and shapes, and therefore varying optical properties. We measure the extinction coefficient of the synthesized NStars at their maximum surface plasmon resonances (SPR), which range from 5.7 × 108 to 26.8 × 108 M-1cm-1. Measured values correlate with those obtained from theoretical models of the NStars using the discrete dipole approximation (DDA), which we use to simulate the extinction spectra of the nanostars. Finally, because NStars are typically used in biological applications, we conjugate DNA and antibodies to the NStars and calculate the footprint of the bound biomolecules.
Collapse
Affiliation(s)
- Helena de Puig
- Dept. of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Justina O. Tam
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology Cambridge, MA USA 02139
- Winchester Engineering Analytical Center, Food and Drug Administration. Winchester MA USA 01890
| | - Chun-Wan Yen
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology Cambridge, MA USA 02139
- Winchester Engineering Analytical Center, Food and Drug Administration. Winchester MA USA 01890
| | - Lee Gehrke
- Institute for Medical Engineering and Science, Massachusetts Institute of Technology Cambridge, MA USA 02139
- Dept. of Microbiology and Immunobiology, Harvard Medical School, Boston 02115
- Corresponding Authors: Kimberly Hamad-Schifferli, , Lee Gehrke,
| | - Kimberly Hamad-Schifferli
- Dept. of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
- Corresponding Authors: Kimberly Hamad-Schifferli, , Lee Gehrke,
| |
Collapse
|
140
|
Wu J, Liang D, Jin Q, Liu J, Zheng M, Duan X, Tang X. Bioorthogonal SERS Nanoprobes for Mulitplex Spectroscopic Detection, Tumor Cell Targeting, and Tissue Imaging. Chemistry 2015. [DOI: 10.1002/chem.201501942] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
141
|
Neal CJ, Das S, Saraf S, Tetard L, Seal S. Self-Assembly of PEG-Coated Ceria Nanoparticles Shows Dependence on PEG Molecular Weight and Ageing. Chempluschem 2015; 80:1680-1690. [DOI: 10.1002/cplu.201500237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 06/10/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Craig J. Neal
- Advanced Materials Processing and Analysis Center; Materials Science and Engineering; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
| | - Soumen Das
- Advanced Materials Processing and Analysis Center; Materials Science and Engineering; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
- Nanoscience Technology Center; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
| | - Shashank Saraf
- Advanced Materials Processing and Analysis Center; Materials Science and Engineering; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
| | - Laurene Tetard
- Nanoscience Technology Center; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
| | - Sudipta Seal
- Advanced Materials Processing and Analysis Center; Materials Science and Engineering; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
- Nanoscience Technology Center; University of Central Florida; 4000 Central Florida Blvd Orlando FL 32816 USA
| |
Collapse
|
142
|
Choi SY, Song MS, Ryu PD, Lam ATN, Joo SW, Lee SY. Gold nanoparticles promote osteogenic differentiation in human adipose-derived mesenchymal stem cells through the Wnt/β-catenin signaling pathway. Int J Nanomedicine 2015; 10:4383-92. [PMID: 26185441 PMCID: PMC4500612 DOI: 10.2147/ijn.s78775] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Gold nanoparticles (AuNPs) are attractive materials for use in biomedicine due to their physical properties. Increasing evidence suggests that several nanoparticles induce the differentiation of human mesenchymal stem cells into osteoblasts and adipocytes. In this study, we hypothesized that chitosan-conjugated AuNPs promote the osteogenic differentiation of human adipose-derived mesenchymal stem cells. For the evaluation of osteogenic differentiation, alizarin red staining, an alamarBlue(®) assay, and a quantitative real-time polymerase chain reaction analysis were performed. In order to examine specific signaling pathways, immunofluorescence and a western blotting assay were performed. Our results demonstrate that chitosan-conjugated AuNPs increase the deposition of calcium content and the expression of marker genes related to osteogenic differentiation in human adipose-derived mesenchymal stem cells at nontoxic concentrations. These results indicate that chitosan-conjugated AuNPs promote osteogenesis through the Wnt/β-catenin signaling pathway. Therefore, chitosan-conjugated AuNPs can be used as a reagent for promoting bone formation.
Collapse
Affiliation(s)
- Seon Young Choi
- Laboratory of Veterinary Pharmacology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Min Seok Song
- Laboratory of Veterinary Pharmacology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Pan Dong Ryu
- Laboratory of Veterinary Pharmacology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| | - Anh Thu Ngoc Lam
- Department of Chemistry, Soongsil University, Seoul, South Korea
| | - Sang-Woo Joo
- Department of Chemistry, Soongsil University, Seoul, South Korea
| | - So Yeong Lee
- Laboratory of Veterinary Pharmacology, Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, South Korea
| |
Collapse
|
143
|
Safronov V, Sozontov E, Polikarpov M. Magnetite nanoparticles for nonradionuclide brachytherapy. J Appl Crystallogr 2015; 48:690-692. [PMID: 26089761 PMCID: PMC4453974 DOI: 10.1107/s1600576715008900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 05/07/2015] [Indexed: 11/10/2022] Open
Abstract
Magnetite nanoparticles possess several properties that can make them useful for targeted delivery of radiation to tumors for the purpose of brachytherapy. Such particles are biodegradable and magnetic and can emit secondary radiation when irradiated by an external source. In this work, the dose distribution around a magnetite particle of 10 nm diameter being irradiated by monochromatic X-rays with energies in the range 4-60 keV is calculated.
Collapse
Affiliation(s)
- Victor Safronov
- Research Center ‘Space Materials Science’, Shubnikov Institute of Crystallography, Russian Academy of Sciences, Akademicheskaya 8, Kaluga, 248640, Russian Federation
| | - Evgeny Sozontov
- National Research Centre ‘Kurchatov Institute’, Akademika Kurchatova 1, Moscow, 123182, Russian Federation
| | - Mikhail Polikarpov
- National Research Centre ‘Kurchatov Institute’, Akademika Kurchatova 1, Moscow, 123182, Russian Federation
| |
Collapse
|
144
|
Favi PM, Gao M, Johana Sepúlveda Arango L, Ospina SP, Morales M, Pavon JJ, Webster TJ. Shape and surface effects on the cytotoxicity of nanoparticles: Gold nanospheres versus gold nanostars. J Biomed Mater Res A 2015; 103:3449-62. [PMID: 25904210 DOI: 10.1002/jbm.a.35491] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 04/07/2015] [Accepted: 04/08/2015] [Indexed: 12/30/2022]
Abstract
Gold nanoparticles are materials with unique optical properties that have made them very attractive for numerous biomedical applications. With the increasing discovery of techniques to synthesize novel nanoparticles such as star-shaped gold nanoparticles for biomedical applications, the safety and performance of these new nanomaterials must be systematically assessed before use. In this study, gold nanostars (AuNSTs) with multibranched surface structures were synthesized, and their influence on the cytotoxicity of human skin fibroblasts and rat fat pad endothelial cells (RFPECs) were assessed and compared with that of gold nanospheres (AuNSPs) with unbranched surfaces. Results showed that the AuNSPs with diameters of approximately 61.46 nm showed greater toxicity with fibroblast cells and RFPECs compared with the synthesized AuNSTs with diameters of approximately 33.69 nm. The AuNSPs were lethal at concentrations of 40 μg/mL for both cell lines, whereas the AuNSTs were less toxic at higher concentrations (400 μg/mL). The calculated IC50 (50% inhibitory concentration) values of the AuNSPs exposed to fibroblast cells were greater at 1 and 4 days of culture (26.4 and 27.7 μg/mL, respectively) compared with the RFPECs (13.6 and 13.8 μg/mL, respectively), indicating that the AuNSPs have a greater toxicity to endothelial cells. It was proposed that possible factors that could be promoting the reduced toxicity effects of the AuNSTs to fibroblast cells and RFPECs, compared with the AuNSPs may be size, surface chemistry, and shape of the gold nanoparticles. The reduced cell toxicity observed with the AuNSTs suggests that AuNSTs may be a promising material for use in biomedical applications.
Collapse
Affiliation(s)
- Pelagie Marlene Favi
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts
| | - Ming Gao
- Department of Pharmaceutical Sciences, School of Pharmacy, Bouvé College of Health Sciences, Northeastern University, Boston, Massachusetts
| | | | - Sandra Patricia Ospina
- Institute of Biology, University Research Headquarters, University of Antioquia, Medellín, Antioquia, Colombia
| | - Mariana Morales
- Department of Medicine, University of Antioquia, Medellín, Antioquia, Colombia
| | - Juan Jose Pavon
- Advanced Biomaterials and Regenerative Medicine - ABRM, Bioengineering Programme, University of Antioquia, Medellín, Antioquia, Colombia
| | - Thomas Jay Webster
- Department of Chemical Engineering, Northeastern University, Boston, Massachusetts.,Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia
| |
Collapse
|
145
|
Galler K, Bräutigam K, Große C, Popp J, Neugebauer U. Making a big thing of a small cell--recent advances in single cell analysis. Analyst 2015; 139:1237-73. [PMID: 24495980 DOI: 10.1039/c3an01939j] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Single cell analysis is an emerging field requiring a high level interdisciplinary collaboration to provide detailed insights into the complex organisation, function and heterogeneity of life. This review is addressed to life science researchers as well as researchers developing novel technologies. It covers all aspects of the characterisation of single cells (with a special focus on mammalian cells) from morphology to genetics and different omics-techniques to physiological, mechanical and electrical methods. In recent years, tremendous advances have been achieved in all fields of single cell analysis: (1) improved spatial and temporal resolution of imaging techniques to enable the tracking of single molecule dynamics within single cells; (2) increased throughput to reveal unexpected heterogeneity between different individual cells raising the question what characterizes a cell type and what is just natural biological variation; and (3) emerging multimodal approaches trying to bring together information from complementary techniques paving the way for a deeper understanding of the complexity of biological processes. This review also covers the first successful translations of single cell analysis methods to diagnostic applications in the field of tumour research (especially circulating tumour cells), regenerative medicine, drug discovery and immunology.
Collapse
Affiliation(s)
- Kerstin Galler
- Integrated Research and Treatment Center "Center for Sepsis Control and Care", Jena University Hospital, Erlanger Allee 101, 07747 Jena, Germany
| | | | | | | | | |
Collapse
|
146
|
Huang RFS, Wei YJ, Inbaraj BS, Chen BH. Inhibition of colon cancer cell growth by nanoemulsion carrying gold nanoparticles and lycopene. Int J Nanomedicine 2015; 10:2823-46. [PMID: 25914533 PMCID: PMC4399598 DOI: 10.2147/ijn.s79107] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Lycopene (LP), an important functional compound in tomatoes, and gold nanoparticles (AN), have received considerable attention as potential candidates for cancer therapy. However, the extreme instability and poor bioavailability of LP limits its in vivo application. This study intends to develop a nanoemulsion system incorporating both LP and AN, and to study the possible synergistic effects on the inhibition of the HT-29 colon cancer cell line. LP-nanogold nanoemulsion containing Tween 80 as an emulsifier was prepared, followed by characterization using transmission electron microscopy (TEM), dynamic light scattering (DLS) analysis, ultraviolet spectroscopy, and zeta potential analysis. The particle size as determined by TEM and DLS was 21.3±3.7 nm and 25.0±4.2 nm for nanoemulsion and 4.7±1.1 nm and 3.3±0.6 nm for AN, while the zeta potential of nanoemulsion and AN was -32.2±1.8 mV and -48.5±2.7 mV, respectively. Compared with the control treatment, both the combo (AN 10 ppm plus LP 12 μM) and nanoemulsion (AN 0.16 ppm plus LP 0.4 μM) treatments resulted in a five- and 15-fold rise in early apoptotic cells of HT-29, respectively. Also, the nanoemulsion significantly reduced the expressions of procaspases 8, 3, and 9, as well as PARP-1 and Bcl-2, while Bax expression was enhanced. A fivefold decline in the migration capability of HT-29 cells was observed for this nanoemulsion when compared to control, with the invasion-associated markers being significantly reversed through the upregulation of the epithelial marker E-cadherin and downregulation of Akt, nuclear factor kappa B, pro-matrix metalloproteinase (MMP)-2, and active MMP-9 expressions. The TEM images revealed that numerous nanoemulsion-filled vacuoles invaded cytosol and converged into the mitochondria, resulting in an abnormally elongated morphology with reduced cristae and matrix contents, demonstrating a possible passive targeting effect. The nanoemulsion containing vacuoles were engulfed and internalized by the nuclear membrane envelop for subsequent invasion into the nucleoli. Taken together, LP-nanogold nanoemulsion could provide synergistic effects at AN and LP doses 250 and 120 times lower than that in the combo treatment, respectively, demonstrating the potential of nanoemulsion developed in this study for a possible application in colon cancer therapy.
Collapse
Affiliation(s)
- Rwei-Fen S Huang
- Graduate Institute of Nutrition and Food Science, Fu Jen University, Taipei, Taiwan ; Department of Nutritional Science, Fu Jen University, Taipei, Taiwan
| | - Yi-Jun Wei
- Graduate Institute of Nutrition and Food Science, Fu Jen University, Taipei, Taiwan ; Department of Nutritional Science, Fu Jen University, Taipei, Taiwan
| | | | - Bing-Huei Chen
- Graduate Institute of Nutrition and Food Science, Fu Jen University, Taipei, Taiwan ; Department of Food Science, Fu Jen University, Taipei, Taiwan ; Graduate Institute of Medicine, Fu Jen University, Taipei, Taiwan
| |
Collapse
|
147
|
Wang K, Yao H, Meng Y, Wang Y, Yan X, Huang R. Specific aptamer-conjugated mesoporous silica-carbon nanoparticles for HER2-targeted chemo-photothermal combined therapy. Acta Biomater 2015; 16:196-205. [PMID: 25596325 DOI: 10.1016/j.actbio.2015.01.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 12/02/2014] [Accepted: 01/01/2015] [Indexed: 01/03/2023]
Abstract
Tumor-specific therapeutic platforms designed for combined tumor therapy has recently received wide attention. In this work, a new HB5 aptamer-functionalized mesoporous silica-carbon based doxorubicin (DOX)-loaded system (MSCN-PEG-HB5/DOX) was successfully constructed and characterized for chemo-photothermal combined therapy of human epithelial growth factor receptor 2 (HER2)-positive breast cancer cells. The in vitro release result showed that MSCN-PEG-HB5/DOX exhibited pH-sensitive and NIR-triggered release manner. HB5-modified nanoparticles showed significant higher cellular uptake in HER2-positive breast cancer cells (SK-BR-3) but not in normal breast epithelial cells (MCF-10A), compared to unmodified counterparts. The intracellular uptake of functional nanoparticles was mainly based on the receptor-mediated mechanism which was energy-dependent. Cytotoxicity experiments demonstrated that combined therapy induced highest cell killing effect compared to chemotherapy and photothermal therapy alone. The combination index (CI) was 0.253 indicating the synergistic effect of chemotherapy and photothermal therapy. These findings suggested that MSCN-PEG-HB5/DOX was a potential chemo-photothermal therapeutic platform targeting to HER2-positive breast cancers.
Collapse
|
148
|
Dam DHM, Culver KSB, Kandela I, Lee RC, Chandra K, Lee H, Mantis C, Ugolkov A, Mazar AP, Odom TW. Biodistribution and in vivo toxicity of aptamer-loaded gold nanostars. NANOMEDICINE : NANOTECHNOLOGY, BIOLOGY, AND MEDICINE 2015; 11:671-9. [PMID: 25461281 PMCID: PMC4385396 DOI: 10.1016/j.nano.2014.10.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 09/17/2014] [Accepted: 10/18/2014] [Indexed: 12/19/2022]
Abstract
This paper reports an in vivo evaluation of toxicology and biodistribution of a highly anisotropic Au nanoconstruct composed of a gold nanostar (AuNS) core and a ligand shell of a G-quadruplex DNA aptamer AS1411 (Apt) supporting both targeting and therapy capabilities. We examined the toxicity of the nanoconstructs (Apt-AuNS) at four different injected concentrations. At the highest dose tested (48 mg/kg), maximal tolerated dose was not reached. Clinical pathology showed no apparent signs of acute toxicity. Interestingly, the nanoconstructs circulated longer in female rats compared to male rats. In two different tumor models, the biodistribution of Apt-AuNS, especially tumor accumulation, was different. Accumulation of Apt-AuNS was 5 times higher in invasive breast cancer tumors compared to fibrosarcoma tumors. These results provide insight on identifying a tumor model and nanoconstruct for in vivo studies, especially when an in vitro therapeutic response is observed in multiple cancer cell lines. From the clinical editor: This study investigated the toxicity and distribution of aptamer loaded gold nanostars in a rodent model of invasive breast cancer and fibrosarcoma. Acute toxicity was not identified even in the highest studied doses. Fivefold accumulation was demonstrated in the breast cancer model compared to the fibrosarcoma model. Studies like this are critically important in further clarifying the potential therapeutic use of these nanoconstructs, especially when ex vivo effects are clearly demonstrated.
Collapse
MESH Headings
- Animals
- Aptamers, Nucleotide/adverse effects
- Aptamers, Nucleotide/chemistry
- Aptamers, Nucleotide/pharmacokinetics
- Aptamers, Nucleotide/pharmacology
- Cell Line, Tumor
- Drug Screening Assays, Antitumor
- Female
- Fibrosarcoma/drug therapy
- Fibrosarcoma/metabolism
- Fibrosarcoma/pathology
- Gold/adverse effects
- Gold/chemistry
- Gold/pharmacokinetics
- Gold/pharmacology
- Male
- Mammary Neoplasms, Experimental/drug therapy
- Mammary Neoplasms, Experimental/metabolism
- Mammary Neoplasms, Experimental/pathology
- Metal Nanoparticles/adverse effects
- Metal Nanoparticles/chemistry
- Metal Nanoparticles/therapeutic use
- Mice
- Mice, Nude
- Rats
- Sex Characteristics
Collapse
Affiliation(s)
| | - Kayla S B Culver
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Irawati Kandela
- Developmental Therapeutic Core, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
| | - Raymond C Lee
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Kavita Chandra
- Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA
| | - Hyojin Lee
- Department of Chemistry, Northwestern University, Evanston, IL, USA
| | - Christine Mantis
- Developmental Therapeutic Core, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
| | - Andrey Ugolkov
- Developmental Therapeutic Core, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
| | - Andrew P Mazar
- Developmental Therapeutic Core, Chemistry of Life Processes Institute, Northwestern University, Evanston, IL, USA
| | - Teri W Odom
- Department of Chemistry, Northwestern University, Evanston, IL, USA; Department of Materials Science and Engineering, Northwestern University, Evanston, IL, USA.
| |
Collapse
|
149
|
Rotz MW, Culver KSB, Parigi G, MacRenaris KW, Luchinat C, Odom TW, Meade TJ. High relaxivity Gd(III)-DNA gold nanostars: investigation of shape effects on proton relaxation. ACS NANO 2015; 9:3385-96. [PMID: 25723190 PMCID: PMC4489565 DOI: 10.1021/nn5070953] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Gadolinium(III) nanoconjugate contrast agents (CAs) have distinct advantages over their small-molecule counterparts in magnetic resonance imaging. In addition to increased Gd(III) payload, a significant improvement in proton relaxation efficiency, or relaxivity (r1), is often observed. In this work, we describe the synthesis and characterization of a nanoconjugate CA created by covalent attachment of Gd(III) to thiolated DNA (Gd(III)-DNA), followed by surface conjugation onto gold nanostars (DNA-Gd@stars). These conjugates exhibit remarkable r1 with values up to 98 mM(-1) s(-1). Additionally, DNA-Gd@stars show efficient Gd(III) delivery and biocompatibility in vitro and generate significant contrast enhancement when imaged at 7 T. Using nuclear magnetic relaxation dispersion analysis, we attribute the high performance of the DNA-Gd@stars to an increased contribution of second-sphere relaxivity compared to that of spherical CA equivalents (DNA-Gd@spheres). Importantly, the surface of the gold nanostar contains Gd(III)-DNA in regions of positive, negative, and neutral curvature. We hypothesize that the proton relaxation enhancement observed results from the presence of a unique hydrophilic environment produced by Gd(III)-DNA in these regions, which allows second-sphere water molecules to remain adjacent to Gd(III) ions for up to 10 times longer than diffusion. These results establish that particle shape and second-sphere relaxivity are important considerations in the design of Gd(III) nanoconjugate CAs.
Collapse
Affiliation(s)
- Matthew W. Rotz
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Kayla S. B. Culver
- Departments of Chemistry, Materials Science and Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Giacomo Parigi
- Magnetic Resonance Center (CERM) and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019 Sesto Fiorentino, Italy
| | - Keith W. MacRenaris
- Quantitative Bio-elemental Imaging Center, Department of Molecular Biosciences, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Claudio Luchinat
- Magnetic Resonance Center (CERM) and Department of Chemistry, University of Florence, Via Luigi Sacconi 6, 50019 Sesto Fiorentino, Italy
| | - Teri W. Odom
- Departments of Chemistry, Materials Science and Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Thomas J. Meade
- Departments of Chemistry, Molecular Biosciences, Neurobiology, and Radiology, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| |
Collapse
|
150
|
Jana D, Matti C, He J, Sagle L. Capping agent-free gold nanostars show greatly increased versatility and sensitivity for biosensing. Anal Chem 2015; 87:3964-72. [PMID: 25723296 DOI: 10.1021/acs.analchem.5b00014] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
We report the first assessment of the plasmonic biosensing capabilities of capping agent-free gold nanostars. Capping agent removal was carried out using aqueous solutions of sodium borohydride, which yielded a refractive index sensitivity of 474 nm/RIU for the polyvinylpyrrolidone (PVP)-free nanostars compared with 98 nm/RIU for PVP-coated gold nanostars. Following PVP removal, biotinylated thiol and streptavidin protein were added to the nanostars, which resulted in red shifts as large as 51 nm and a limit of detection as low as 0.1 pM. Refractive index-based sensing of prostate specific antigen (PSA) both in buffer and serum was then carried out and was shown to yield shifts as large as 127 nm and have a limit of detection of 100 pM in serum. Last, a sandwich assay involving PSA was developed to aggregate the nanostars together for greater sensitivity. The sandwich assay did, indeed, give shifts close to 200 nm and was capable of detecting 10(-17) M PSA in serum. The greatly increased sensitivity and amenability to functionalization of PVP-free gold nanostars should prove useful in applications ranging from catalysis to drug delivery.
Collapse
Affiliation(s)
- Debrina Jana
- Department of Chemistry, College of Arts and Sciences, University of Cincinnati, 301 West Clifton Court, Cincinnati Ohio 45221-0172, United States
| | - Carlos Matti
- Department of Chemistry, College of Arts and Sciences, University of Cincinnati, 301 West Clifton Court, Cincinnati Ohio 45221-0172, United States
| | - Jie He
- Department of Chemistry, College of Arts and Sciences, University of Cincinnati, 301 West Clifton Court, Cincinnati Ohio 45221-0172, United States
| | - Laura Sagle
- Department of Chemistry, College of Arts and Sciences, University of Cincinnati, 301 West Clifton Court, Cincinnati Ohio 45221-0172, United States
| |
Collapse
|