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Grulke EA, Wu X, Ji Y, Buhr E, Yamamoto K, Song NW, Stefaniak AB, Schwegler-Berry D, Burchett WW, Lambert J, Stromberg AJ. Differentiating gold nanorod samples using particle size and shape distributions from transmission electron microscope images. METROLOGIA 2018; 55:254-267. [PMID: 32410745 PMCID: PMC7224690 DOI: 10.1088/1681-7575/aaa368] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Size and shape distributions of gold nanorod samples are critical to their physico-chemical properties, especially their longitudinal surface plasmon resonance. This interlaboratory comparison study developed methods for measuring and evaluating size and shape distributions for gold nanorod samples using transmission electron microscopy (TEM) images. The objective was to determine whether two different samples, which had different performance attributes in their application, were different with respect to their size and/or shape descriptor distributions. Touching particles in the captured images were identified using a ruggedness shape descriptor. Nanorods could be distinguished from nanocubes using an elongational shape descriptor. A non-parametric statistical test showed that cumulative distributions of an elongational shape descriptor, that is, the aspect ratio, were statistically different between the two samples for all laboratories. While the scale parameters of size and shape distributions were similar for both samples, the width parameters of size and shape distributions were statistically different. This protocol fulfills an important need for a standardized approach to measure gold nanorod size and shape distributions for applications in which quantitative measurements and comparisons are important. Furthermore, the validated protocol workflow can be automated, thus providing consistent and rapid measurements of nanorod size and shape distributions for researchers, regulatory agencies, and industry.
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Affiliation(s)
- Eric A Grulke
- Chemical and Materials Engineering, University of Kentucky, Lexington, KY, United States of America
| | - Xiaochun Wu
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 1001901, People's Republic of China
| | - Yinglu Ji
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 1001901, People's Republic of China
| | - Egbert Buhr
- Physikalisch-Technische Bundesanstalt (PTB), Braunschweig, Germany
| | - Kazuhiro Yamamoto
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan
| | - Nam Woong Song
- Korea Research Institute of Standards and Science (KRISS), Daejeon, Republic of Korea
| | - Aleksandr B Stefaniak
- US National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, United States of America
| | - Diane Schwegler-Berry
- US National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV, United States of America
| | - Woodrow W Burchett
- Applied Statistics Laboratory, University of Kentucky, Lexington, KY, United States of America
| | - Joshua Lambert
- Applied Statistics Laboratory, University of Kentucky, Lexington, KY, United States of America
| | - Arnold J Stromberg
- Applied Statistics Laboratory, University of Kentucky, Lexington, KY, United States of America
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Zhao R, Han X, Li Y, Wang H, Ji T, Zhao Y, Nie G. Photothermal Effect Enhanced Cascade-Targeting Strategy for Improved Pancreatic Cancer Therapy by Gold Nanoshell@Mesoporous Silica Nanorod. ACS NANO 2017; 11:8103-8113. [PMID: 28738680 DOI: 10.1021/acsnano.7b02918] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Pancreatic cancer, one of the leading causes of cancer-related mortality, is characterized by desmoplasia and hypovascular cancerous tissue, with a 5 year survival rate of <8%. To overcome the severe resistance of pancreatic cancer to conventional therapies, we synthesized gold nanoshell-coated rod-like mesoporous silica (GNRS) nanoparticles which integrated cascade tumor targeting (mediated by photothermal effect and molecular receptor binding) and photothermal treatment-enhanced gemcitabine chemotherapy, under mild near-infrared laser irradiation condition. GNRS significantly improved gemcitabine penetration and accumulation in tumor tissues, thus destroying the dense stroma barrier of pancreatic cancer and reinforcing chemosensitivity in mice. Our current findings strongly support the notion that further development of this integrated plasmonic photothermal strategy may represent a promising translational nanoformulation for effective treatment of pancreatic cancer with integral cascade tumor targeting strategy and enhanced drug delivery efficacy.
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Affiliation(s)
- Ruifang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Xuexiang Han
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- Department of Chemistry, Tsinghua University , Beijing 100084, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Yiye Li
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Hai Wang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Tianjiao Ji
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- Laboratory for Biomaterials and Drug Delivery, Department of Anesthesiology, Division of Critical Care Medicine, Children's Hospital Boston, Harvard Medical School , 300 Longwood Avenue, Boston, Massachusetts 02115, United States
| | - Yuliang Zhao
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Guangjun Nie
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center of Excellence in Nanoscience, National Center for Nanoscience and Technology , Beijing 100190, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
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