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Cheng CC, Chiang MH, Yeh CH, Lee TT, Ching YT, Hwu Y, Chiang AS. Sparse-view synchrotron X-ray tomographic reconstruction with learning-based sinogram synthesis. JOURNAL OF SYNCHROTRON RADIATION 2023; 30:1135-1142. [PMID: 37850562 PMCID: PMC10624031 DOI: 10.1107/s1600577523008032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 09/14/2023] [Indexed: 10/19/2023]
Abstract
Synchrotron radiation can be used as a light source in X-ray microscopy to acquire a high-resolution image of a microscale object for tomography. However, numerous projections must be captured for a high-quality tomographic image to be reconstructed; thus, image acquisition is time consuming. Such dense imaging is not only expensive and time consuming but also results in the target receiving a large dose of radiation. To resolve these problems, sparse acquisition techniques have been proposed; however, the generated images often have many artefacts and are noisy. In this study, a deep-learning-based approach is proposed for the tomographic reconstruction of sparse-view projections that are acquired with a synchrotron light source; this approach proceeds as follows. A convolutional neural network (CNN) is used to first interpolate sparse X-ray projections and then synthesize a sufficiently large set of images to produce a sinogram. After the sinogram is constructed, a second CNN is used for error correction. In experiments, this method successfully produced high-quality tomography images from sparse-view projections for two data sets comprising Drosophila and mouse tomography images. However, the initial results for the smaller mouse data set were poor; therefore, transfer learning was used to apply the Drosophila model to the mouse data set, greatly improving the quality of the reconstructed sinogram. The method could be used to achieve high-quality tomography while reducing the radiation dose to imaging subjects and the imaging time and cost.
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Affiliation(s)
- Chang-Chieh Cheng
- Information Technology Service Center, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu, Taiwan
| | - Ming-Hsuan Chiang
- Department of Computer Science, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu, Taiwan
| | - Chao-Hong Yeh
- Institute of Data Science and Engineering, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu, Taiwan
| | - Tsung-Tse Lee
- Institute of Physics, Academia Sinica, 128 Academia Road, Nankang, Taipei, Taiwan
| | - Yu-Tai Ching
- Department of Computer Science, National Yang Ming Chiao Tung University, 1001 University Road, Hsinchu, Taiwan
| | - Yeukuang Hwu
- Institute of Physics, Academia Sinica, 128 Academia Road, Nankang, Taipei, Taiwan
| | - Ann-Shyn Chiang
- Brain Research Center, National Tsing Hua University, Hsinchu 30013, Taiwan
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2
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Calatayud DG, Lledos M, Casarsa F, Pascu SI. Functional Diversity in Radiolabeled Nanoceramics and Related Biomaterials for the Multimodal Imaging of Tumors. ACS BIO & MED CHEM AU 2023; 3:389-417. [PMID: 37876497 PMCID: PMC10591303 DOI: 10.1021/acsbiomedchemau.3c00021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 07/18/2023] [Accepted: 07/18/2023] [Indexed: 10/26/2023]
Abstract
Nanotechnology advances have the potential to assist toward the earlier detection of diseases, giving increased accuracy for diagnosis and helping to personalize treatments, especially in the case of noncommunicative diseases (NCDs) such as cancer. The main advantage of nanoparticles, the scaffolds underpinning nanomedicine, is their potential to present multifunctionality: synthetic nanoplatforms for nanomedicines can be tailored to support a range of biomedical imaging modalities of relevance for clinical practice, such as, for example, optical imaging, computed tomography (CT), magnetic resonance imaging (MRI), single photon emission computed tomography (SPECT), and positron emission tomography (PET). A single nanoparticle has the potential to incorporate myriads of contrast agent units or imaging tracers, encapsulate, and/or be conjugated to different combinations of imaging tags, thus providing the means for multimodality diagnostic methods. These arrangements have been shown to provide significant improvements to the signal-to-noise ratios that may be obtained by molecular imaging techniques, for example, in PET diagnostic imaging with nanomaterials versus the cases when molecular species are involved as radiotracers. We surveyed some of the main discoveries in the simultaneous incorporation of nanoparticulate materials and imaging agents within highly kinetically stable radio-nanomaterials as potential tracers with (pre)clinical potential. Diversity in function and new developments toward synthesis, radiolabeling, and microscopy investigations are explored, and preclinical applications in molecular imaging are highlighted. The emphasis is on the biocompatible materials at the forefront of the main preclinical developments, e.g., nanoceramics and liposome-based constructs, which have driven the evolution of diagnostic radio-nanomedicines over the past decade.
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Affiliation(s)
- David G. Calatayud
- Department
of Inorganic Chemistry, Universidad Autónoma
de Madrid, Madrid 28049, Spain
- Department
of Electroceramics, Instituto de Cerámica
y Vidrio, Madrid 28049, Spain
| | - Marina Lledos
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Federico Casarsa
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
| | - Sofia I. Pascu
- Department
of Chemistry, University of Bath, Bath BA2 7AY, United Kingdom
- Centre
of Therapeutic Innovations, University of
Bath, Bath BA2 7AY, United Kingdom
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3
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Cao M, Zhang K, Zhang S, Wang Y, Chen C. Advanced Light Source Analytical Techniques for Exploring the Biological Behavior and Fate of Nanomedicines. ACS CENTRAL SCIENCE 2022; 8:1063-1080. [PMID: 36032763 PMCID: PMC9413437 DOI: 10.1021/acscentsci.2c00680] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Indexed: 05/09/2023]
Abstract
Exploration of the biological behavior and fate of nanoparticles, as affected by the nanomaterial-biology (nano-bio) interaction, has become progressively critical for guiding the rational design and optimization of nanomedicines to minimize adverse effects, support clinical translation, and aid in evaluation by regulatory agencies. Because of the complexity of the biological environment and the dynamic variations in the bioactivity of nanomedicines, in-situ, label-free analysis of the transport and transformation of nanomedicines has remained a challenge. Recent improvements in optics, detectors, and light sources have allowed the expansion of advanced light source (ALS) analytical technologies to dig into the underexplored behavior and fate of nanomedicines in vivo. It is increasingly important to further develop ALS-based analytical technologies with higher spatial and temporal resolution, multimodal data fusion, and intelligent prediction abilities to fully unlock the potential of nanomedicines. In this Outlook, we focus on several selected ALS analytical technologies, including imaging and spectroscopy, and provide an overview of the emerging opportunities for their applications in the exploration of the biological behavior and fate of nanomedicines. We also discuss the challenges and limitations faced by current approaches and tools and the expectations for the future development of advanced light sources and technologies. Improved ALS imaging and spectroscopy techniques will accelerate a profound understanding of the biological behavior of new nanomedicines. Such advancements are expected to inspire new insights into nanomedicine research and promote the development of ALS capabilities and methods more suitable for nanomedicine evaluation with the goal of clinical translation.
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Affiliation(s)
- Mingjing Cao
- CAS
Key Laboratory for Biomedical Effects of Nanomedicines and Nanosafety
& CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Kai Zhang
- Beijing
Synchrotron Radiation Facility, Institute
of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
| | - Shuhan Zhang
- CAS
Key Laboratory for Biomedical Effects of Nanomedicines and Nanosafety
& CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
| | - Yaling Wang
- CAS
Key Laboratory for Biomedical Effects of Nanomedicines and Nanosafety
& CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
- The
GBA National Institute for Nanotechnology Innovation, Guangzhou 510700, China
| | - Chunying Chen
- CAS
Key Laboratory for Biomedical Effects of Nanomedicines and Nanosafety
& CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing 100190, China
- The
GBA National Institute for Nanotechnology Innovation, Guangzhou 510700, China
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4
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Della Camera G, Madej M, Ferretti AM, La Spina R, Li Y, Corteggio A, Heinzl T, Swartzwelter BJ, Sipos G, Gioria S, Ponti A, Boraschi D, Italiani P. Personalised Profiling of Innate Immune Memory Induced by Nano-Imaging Particles in Human Monocytes. Front Immunol 2021; 12:692165. [PMID: 34421901 PMCID: PMC8377278 DOI: 10.3389/fimmu.2021.692165] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Accepted: 07/14/2021] [Indexed: 11/25/2022] Open
Abstract
Engineered nanoparticles used for medical purposes must meet stringent safety criteria, which include immunosafety, i.e., the inability to activate possibly detrimental immune/inflammatory effects. Even medical nanomaterials devoid of direct immunotoxic or inflammatory effects may have an impact on human health if able to modify innate memory, which is the ability to “prime” future immune responses towards a different, possibly more detrimental reactivity. Although innate memory is usually protective, anomalous innate memory responses may be at the basis of immune pathologies. In this study, we have examined the ability of two nanomaterials commonly used for diagnostic imaging purposes, gold and iron oxide nanoparticles, to induce or modulate innate memory, using an in vitro model based on human primary monocytes. Monocytes were exposed in culture to nanoparticles alone or together with the bacterial agent LPS (priming phase/primary response), then rested for six days (extinction phase), and eventually challenged with LPS (memory/secondary response). The memory response to the LPS challenge was measured as changes in the production of inflammatory (TNFα, IL-6) and anti-inflammatory cytokines (IL-10, IL-1Ra), as compared to unprimed monocytes. The results show that both types of nanoparticles can have an effect in the induction of memory, with changes observed in the cytokine production. By comparing nanomaterials of different shapes (spherical vs. rod-shaped gold particles) and different size (17 vs. 22 nm diameter spherical iron oxide particles), it was evident that innate memory could be differentially induced and modulated depending on size, shape and chemical composition. However, the main finding was that the innate memory effect of the particles was strongly donor-dependent, with monocytes from each donor showing a distinct memory profile upon priming with the same particles, thereby making impossible to draw general conclusions on the particle effects. Thus, in order to predict the effect of imaging nanoparticles on the innate memory of patients, a personalised profiling would be required, able to take in consideration the peculiarities of the individual innate immune reactivity.
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Affiliation(s)
- Giacomo Della Camera
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Mariusz Madej
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Anna Maria Ferretti
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" (SCITEC), National Research Council (CNR), Milano, Italy
| | - Rita La Spina
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Yang Li
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Annunziata Corteggio
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Tommaso Heinzl
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Benjamin J Swartzwelter
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Gergö Sipos
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
| | - Sabrina Gioria
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Alessandro Ponti
- Istituto di Scienze e Tecnologie Chimiche "Giulio Natta" (SCITEC), National Research Council (CNR), Milano, Italy
| | - Diana Boraschi
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy.,Stazione Zoologica Anton Dohrn, Napoli, Italy
| | - Paola Italiani
- Institute of Biochemistry and Cell Biology (IBBC), National Research Council (CNR), Napoli, Italy
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5
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Hu X, Zhang Y, Ding T, Liu J, Zhao H. Multifunctional Gold Nanoparticles: A Novel Nanomaterial for Various Medical Applications and Biological Activities. Front Bioeng Biotechnol 2020; 8:990. [PMID: 32903562 PMCID: PMC7438450 DOI: 10.3389/fbioe.2020.00990] [Citation(s) in RCA: 198] [Impact Index Per Article: 49.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 07/29/2020] [Indexed: 02/05/2023] Open
Abstract
Nanotechnology has become a trending area in science and has made great advances with the development of functional, engineered nanoparticles. Various metal nanoparticles have been widely exploited for a wide range of medical applications. Among them, gold nanoparticles (AuNPs) are widely reported to guide an impressive resurgence and are highly remarkable. AuNPs, with their multiple, unique functional properties, and easy of synthesis, have attracted extensive attention. Their intrinsic features (optics, electronics, and physicochemical characteristics) can be altered by changing the characterization of the nanoparticles, such as shape, size and aspect ratio. They can be applied to a wide range of medical applications, including drug and gene delivery, photothermal therapy (PTT), photodynamic therapy (PDT) and radiation therapy (RT), diagnosis, X-ray imaging, computed tomography (CT) and other biological activities. However, to the best of our knowledge, there is no comprehensive review that summarized the applications of AuNPs in the medical field. Therefore, in this article we systematically review the methods of synthesis, the modification and characterization techniques of AuNPs, medical applications, and some biological activities of AuNPs, to provide a reference for future studies.
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Affiliation(s)
| | | | | | - Jiang Liu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Chinese Academy of Medical Sciences Research Unit of Oral Carcinogenesis and Management, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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6
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Darweesh RS, Ayoub NM, Nazzal S. Gold nanoparticles and angiogenesis: molecular mechanisms and biomedical applications. Int J Nanomedicine 2019; 14:7643-7663. [PMID: 31571869 PMCID: PMC6756918 DOI: 10.2147/ijn.s223941] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 08/18/2019] [Indexed: 12/12/2022] Open
Abstract
Angiogenesis is the formation of new blood vessels from pre-existing vessels. It is a highly regulated process as determined by the interplay between pro-angiogenic and anti-angiogenic factors. Under certain conditions the balance between angiogenesis stimulators and inhibitors is altered, which results in a shift from physiological to pathological angiogenesis. Therefore, the goal of therapeutic targeting of angiogenic process is to normalize vasculature in target tissues by enhancing angiogenesis in disease conditions of reduced vascularity and blood flow, such as tissue ischemia, or alternatively to inhibit excessive and abnormal angiogenesis in disorders like cancer. Gold nanoparticles (AuNPs) are special particles that are generated by nanotechnology and composed of an inorganic core containing gold which is encircled by an organic monolayer. The ability of AuNPs to alter vasculature has captured recent attention in medical literature as potential therapeutic agents for the management of pathologic angiogenesis. This review provides an overview of the effects of AuNPs on angiogenesis and the molecular mechanisms and biomedical applications associated with their effects. In addition, the main synthesis methods, physical properties, uptake mechanisms, and toxicity of AuNPs are briefly summarized.
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Affiliation(s)
- Ruba S Darweesh
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid22110, Jordan
| | - Nehad M Ayoub
- Department of Clinical Pharmacy, Faculty of Pharmacy, Jordan University of Science and Technology, Irbid22110, Jordan
| | - Sami Nazzal
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Dallas, TX75235-6411, USA
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7
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Han X, Xu K, Taratula O, Farsad K. Applications of nanoparticles in biomedical imaging. NANOSCALE 2019; 11:799-819. [PMID: 30603750 PMCID: PMC8112886 DOI: 10.1039/c8nr07769j] [Citation(s) in RCA: 229] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An urgent need for early detection and diagnosis of diseases continuously pushes the advancements of imaging modalities and contrast agents. Current challenges remain for fast and detailed imaging of tissue microstructures and lesion characterization that could be achieved via development of nontoxic contrast agents with longer circulation time. Nanoparticle technology offers this possibility. Here, we review nanoparticle-based contrast agents employed in most common biomedical imaging modalities, including fluorescence imaging, MRI, CT, US, PET and SPECT, addressing their structure related features, advantages and limitations. Furthermore, their applications in each imaging modality are also reviewed using commonly studied examples. Future research will investigate multifunctional nanoplatforms to address safety, efficacy and theranostic capabilities. Nanoparticles as imaging contrast agents have promise to greatly benefit clinical practice.
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Affiliation(s)
- Xiangjun Han
- Department of Radiology, First Hospital of China Medical University, Shenyang, Liaoning, 110001 P. R. China.
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8
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Cheng CC, Ching YT, Ko PH, Hwu Y. Correction of center of rotation and projection angle in synchrotron X-ray computed tomography. Sci Rep 2018; 8:9884. [PMID: 29959398 PMCID: PMC6026166 DOI: 10.1038/s41598-018-28149-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Accepted: 06/13/2018] [Indexed: 11/25/2022] Open
Abstract
An error in tomographic reconstruction parameters can result considerable artifacts in the reconstructed image, particularly in micro-computed tomography and nano-computed tomography. This study involved designing an automatic method for efficiently correcting errors resulting from incorrectly determined rotational axes and projection angles. In this method, errors are corrected by minimizing the “total variation” of a reconstructed image, and minimization is accomplished by using the gradient descent method. Compared with two previous methods, the proposed method achieved the best reconstruction results.
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Affiliation(s)
- Chang-Chieh Cheng
- Department of Computer Science, College of Computer Science, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan.
| | - Yu-Tai Ching
- Department of Computer Science, College of Computer Science, National Chiao Tung University, 1001 University Road, Hsinchu, Taiwan.
| | - Pai-Hung Ko
- Department of Engineering Science, National Cheng Kung University, No. 1, University Road, Tainan, Taiwan
| | - Yeukuang Hwu
- Institute of Physics, Academia Sinica, 128 Academia Road, Nankang, Taipei, Taiwan
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9
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Tan H, Huang Y, Xu J, Chen B, Zhang P, Ye Z, Liang S, Xiao L, Liu Z. Spider Toxin Peptide Lycosin-I Functionalized Gold Nanoparticles for in vivo Tumor Targeting and Therapy. Am J Cancer Res 2017; 7:3168-3178. [PMID: 28839471 PMCID: PMC5566113 DOI: 10.7150/thno.19780] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 05/08/2017] [Indexed: 12/13/2022] Open
Abstract
Cell penetrating peptides (CPPs) are commonly utilized for intracellular delivery of functional materials to circumvent biomembrane barrier. However, further application of CPPs is hindered by lacking selectivity toward targeted cells. The spider venom peptide, lycosin-I, is a CPP with potent cytotoxicity to cancer cells, which might enable lycosin-I to deliver functional materials into cancer cells selectively. In this study, we demonstrated that the lycosin-I-conjugated spherical gold nanoparticles (LGNPs) not only exhibited efficient cellular internalization efficiency toward cancer cells but also displayed unprecedented selectivity over noncancerous cells. Although LGNPs were removed from the living circulatory system via reticuloendothelial system-dominant clearance modes without noticeable adverse effects to animals, they actually displayed active tumor-targeting effects and efficient accumulation in tumors in vivo. Furthermore, the potential application of this platform for cancer therapy was explored by lycosin-I-conjugated gold nanorods (LGNRs). LGNRs exhibited selective intracellular translocation towards cancer cells and efficient photothermal effect under near infrared (NIR, 808 nm) irradiation, which consequently killed cancer cells in vitro and in vivo effectively. Therefore, the established LGNPs and LGNRs possessed great potential in cancer-targeting delivery and photothermal therapy.
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10
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Lin YC, Hwu Y, Huang GS, Hsiao M, Lee TT, Yang SM, Lee TK, Chen NY, Yang SS, Chen A, Ka SM. Differential synchrotron X-ray imaging markers based on the renal microvasculature for tubulointerstitial lesions and glomerulopathy. Sci Rep 2017; 7:3488. [PMID: 28615647 PMCID: PMC5471266 DOI: 10.1038/s41598-017-03677-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 05/03/2017] [Indexed: 12/13/2022] Open
Abstract
High resolution synchrotron microtomography capable of revealing microvessels in three dimensional (3D) establishes distinct imaging markers of mouse kidney disease strongly associated to renal tubulointerstitial (TI) lesions and glomerulopathy. Two complementary mouse models of chronic kidney disease (CKD), unilateral ureteral obstruction (UUO) and focal segmental glomerulosclerosis (FSGS), were used and five candidates of unique 3D imaging markers were identified. Our characterization to differentially reflect the altered microvasculature of renal TI lesions and/or glomerulopathy demonstrated these image features can be used to differentiate the disease status and the possible cause therefore qualified as image markers. These 3D imaging markers were further correlated with the histopathology and renal microvessel-based molecular study using antibodies against vascular endothelial cells (CD31), the connective tissue growth factor or the vascular endothelial growth factor. We also found that these 3D imaging markers individually characterize the development of renal TI lesions or glomerulopathy, quantitative and integrated use of all of them provide more information for differentiating the two renal conditions. Our findings thus establish a practical strategy to characterize the CKD-associated renal injuries by the microangiography-based 3D imaging and highlight the impact of dysfunctional microvasculature as a whole on the pathogenesis of the renal lesions.
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Affiliation(s)
- Yu-Chuan Lin
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Yeukuang Hwu
- Institute of Physics, Academia Sinica, Taipei, Taiwan
| | - Guo-Shu Huang
- Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Tsung-Tse Lee
- Institute of Physics, Academia Sinica, Taipei, Taiwan
| | - Shun-Min Yang
- Institute of Physics, Academia Sinica, Taipei, Taiwan
| | - Ting-Kuo Lee
- Institute of Physics, Academia Sinica, Taipei, Taiwan
| | - Nan-Yow Chen
- National Center for High-Performance Computing, Hsinchu, Taiwan
| | - Sung-Sen Yang
- Division of Nephrology, Department of Internal Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Ann Chen
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
| | - Shuk-Man Ka
- Graduate Institute of Life Sciences, National Defense Medical Center, Taipei, Taiwan.
- Graduate Institute of Aerospace and Undersea Medicine, Academy of Medicine, National Defense Medical Center, Taipei, Taiwan.
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11
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Preparation of gold nanoparticles by novel bacterial exopolysaccharide for antibiotic delivery. Life Sci 2016; 153:171-9. [PMID: 27101926 DOI: 10.1016/j.lfs.2016.04.022] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 04/04/2016] [Accepted: 04/14/2016] [Indexed: 02/03/2023]
Abstract
AIM To develop potent drug delivery agents to treat multidrug resistant (MDR) bacterial infections using gold nanoparticles (AuNPs) prepared by bacterial exopolysaccharide (EPS) being a reducing and stabilizing agent. METHODS Gold nanoparticles were prepared by EPS, extracted from Lactobacillus plantarum. AuNPs were characterized by UV-visible spectrophotometer, transmission electron microscope (TEM), zeta potential and Fourier transform infrared spectroscopy. Antibiotics used for functionalization of AuNPs were levofloxacin, cefotaxime, ceftriaxone and ciprofloxacin. The resulted functionalized AuNPs were tested against various MDR bacteria by employing different assays such as well diffusion assay, minimum inhibitory concentration (MIC), minimum bactericidal concentration (MBC) and time killing assay. KEY FINDINGS The nanostructures exhibited excellent bactericidal activity and reduced MIC and MBC against MDR Gram positive and Gram negative bacteria compared to free drugs. Escherichia coli was the most susceptible MDR bacteria followed by Klebsiella pneumoniae and Staphylococcus aureus. TEM results revealed that the bactericidal activity of nanostructures could be mediated by penetration, loss of cytoplasmic contents and cell lysis. SIGNIFICANCE Antibiotic functionalized nanostructures were more potent than free drugs and could be used as potent drug delivery vehicles.
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12
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Lai SF, Ko BH, Chien CC, Chang CJ, Yang SM, Chen HH, Petibois C, Hueng DY, Ka SM, Chen A, Margaritondo G, Hwu Y. Gold nanoparticles as multimodality imaging agents for brain gliomas. J Nanobiotechnology 2015; 13:85. [PMID: 26589283 PMCID: PMC4654925 DOI: 10.1186/s12951-015-0140-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 10/22/2015] [Indexed: 11/20/2022] Open
Abstract
Background Nanoparticles can be used for targeted drug delivery, in particular for brain cancer therapy. However, this requires a detailed analysis of nanoparticles from the associated microvasculature to the tumor, not easy because of the required high spatial resolution. The objective of this study is to demonstrate an experimental solution of this problem, based in vivo and post-mortem whole organ imaging plus nanoscale 3-dimensional (3D) X-ray microscopy. Results The use of gold nanoparticles (AuNPs) as contrast agents paved the way to a detailed high-resolution three dimensional (3D) X-ray and fluorescence imaging analysis of the relation between xenografted glioma cells and the tumor-induced angiogenic microvasculature. The images of the angiogenic microvessels revealed nanoparticle leakage. Complementary tests showed that after endocytotic internalization fluorescent AuNPs allow the visible-light detection of cells. Conclusions AuNP-loading of cells could be extended from the case presented here to other imaging techniques. In our study, they enabled us to (1) identify primary glioma cells at inoculation sites in mice brains; (2) follow the subsequent development of gliomas. (3) Detect the full details of the tumor-related microvasculature; (4) Finding leakage of AuNPs from the tumor-related vasculature, in contrast to no leakage from normal vasculature. Electronic supplementary material The online version of this article (doi:10.1186/s12951-015-0140-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sheng-Feng Lai
- Department of Engineering Science, National Cheng Kung University, Tainan, 701, Taiwan.
| | - Bai-Hung Ko
- Department of Engineering Science, National Cheng Kung University, Tainan, 701, Taiwan. .,Institute of Physics, Academia Sinica, Nankang, Taipei, 115, Taiwan.
| | - Chia-Chi Chien
- Institute of Physics, Academia Sinica, Nankang, Taipei, 115, Taiwan.
| | - Chia-Ju Chang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 115, Taiwan.
| | - Shun-Ming Yang
- Institute of Physics, Academia Sinica, Nankang, Taipei, 115, Taiwan.
| | - Hsiang-Hsin Chen
- Inserm U1029 LMMA, University of Bordeaux, 33600, Pessac Cedex, France.
| | - Cyril Petibois
- Inserm U1029 LMMA, University of Bordeaux, 33600, Pessac Cedex, France.
| | - Dueng-Yuan Hueng
- Department of Biochemistry, School of Medicine, National Defense Medical Center, Taipei, 114, Taiwan. .,Department of Neurological Surgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, 114, Taiwan.
| | - Shuk-Man Ka
- Institute of Aerospace and Undersea Medicine, School of Medicine, National Defense Medical Center, Taipei, 114, Taiwan.
| | - Ann Chen
- Department of Pathology, Tri-Service General Hospital, National Defense Medical Center, Taipei, 114, Taiwan.
| | - G Margaritondo
- School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015, Lausanne, Switzerland.
| | - Y Hwu
- Department of Engineering Science, National Cheng Kung University, Tainan, 701, Taiwan. .,Institute of Physics, Academia Sinica, Nankang, Taipei, 115, Taiwan. .,Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan, 701, Taiwan.
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13
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Naha PC, Chhour P, Cormode DP. Systematic in vitro toxicological screening of gold nanoparticles designed for nanomedicine applications. Toxicol In Vitro 2015; 29:1445-53. [PMID: 26031843 PMCID: PMC4553135 DOI: 10.1016/j.tiv.2015.05.022] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 04/29/2015] [Accepted: 05/29/2015] [Indexed: 01/28/2023]
Abstract
Gold nanoparticles (AuNP) are increasingly being applied in the biomedical field as therapeutics, contrast agents, and in diagnostic systems, motivating investigations of their toxicity that might arise from accidental exposure. While other work has investigated the toxicological response to gold nanoparticles for industrial purposes, here we have surveyed formulations that have been developed for biomedical use, are in clinical trials or have been FDA-approved. The AuNP library tested contains a range of shapes, including spheres, rods and shells, that possess a range of coatings, such as silica, citrate, lipoprotein, polymaleic acid, polyethylene glycol, DNA and others. Good cytocompatibility for all formulations was observed after 1 h of incubation. However after 24 h exposure, a nanorod and a spherical DNA coated formulation resulted in toxicity. The coating material was the only factor that influenced toxicity. AuNP exposure seemed to have no effect on cell cytoskeleton deformation and cell spreading. Cell uptake, as measured by computed tomography and ICP-OES, as well as TEM images of cells, confirmed strong AuNP uptake for certain formulations, but there was no correlation with toxicity. No glove translocation occurred, therefore, nitrile gloves are an adequate safety precaution for working with the AuNP studied. In conclusion, the majority of AuNP formulations tested have very low adverse effects.
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Affiliation(s)
- Pratap C Naha
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - Peter Chhour
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA
| | - David P Cormode
- Department of Radiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Bioengineering, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA; Department of Cardiology, University of Pennsylvania, 3400 Spruce St, 1 Silverstein, Philadelphia, PA 19104, USA.
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Zhang J, Pan L, Lv M, Aldalbahi A, Xie T, Li A, Tai R, Huang Q, Fan C, Zhao Y, Zhu Y. Transportation and fate of gold nanoparticles in oilseed rape. RSC Adv 2015. [DOI: 10.1039/c5ra07278f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, we demonstrate the mild effect of AuNPs on the growth of oilseed rape seedlings and suggest their potential application as vehicles for gene delivery in plants.
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15
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Lundström U, Westermark UK, Larsson DH, Burvall A, Arsenian Henriksson M, Hertz HM. X-ray phase contrast with injected gas for tumor microangiography. Phys Med Biol 2014; 59:2801-11. [PMID: 24801363 DOI: 10.1088/0031-9155/59/11/2801] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We show that the microvasculature of mouse tumors can be visualized using propagation-based phase-contrast x-ray imaging with gas as the contrast agent. The large density difference over the gas-tissue interface provides high contrast, allowing the imaging of small-diameter blood vessels with relatively short exposure times and low dose using a compact liquid-metal-jet x-ray source. The method investigated is applied to tumors (E1A/Ras-transformed mouse embryonic fibroblasts) grown in mouse ears, demonstrating sub-15-µm-diameter imaging of their blood vessels. The exposure time for a 2D projection image is a few seconds and a full tomographic 3D map takes some minutes. The method relies on the strength of the vasculature to withstand the gas pressure. Given that tumor vessels are known to be more fragile than normal vessels, we investigate the tolerance of the vasculature of 12 tumors to gas injection and find that a majority withstand 200 mbar pressures, enough to fill 12-µm-diameter vessels with gas. A comparison of the elasticity of tumorous and non-tumorous vessels supports the assumption of tumor vessels being more fragile. Finally, we conclude that the method has the potential to be extended to the imaging of 15 µm vessels in thick tissue, including mouse imaging, making it of interest for, e.g., angiogenesis research.
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Affiliation(s)
- U Lundström
- Biomedical and X-Ray Physics, Department of Applied Physics, KTH Royal Institute of Technology/Albanova, SE-10691 Stockholm, Sweden
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Poly-ε-caprolactone tungsten oxide nanoparticles as a contrast agent for X-ray computed tomography. Biomaterials 2014; 35:2981-6. [DOI: 10.1016/j.biomaterials.2013.12.032] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 12/13/2013] [Indexed: 01/13/2023]
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17
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Schültke E, Menk R, Pinzer B, Astolfo A, Stampanoni M, Arfelli F, Harsan LA, Nikkhah G. Single-cell resolution in high-resolution synchrotron X-ray CT imaging with gold nanoparticles. JOURNAL OF SYNCHROTRON RADIATION 2014; 21:242-50. [PMID: 24365943 DOI: 10.1107/s1600577513029007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 10/22/2013] [Indexed: 05/20/2023]
Abstract
Gold nanoparticles are excellent intracellular markers in X-ray imaging. Having shown previously the suitability of gold nanoparticles to detect small groups of cells with the synchrotron-based computed tomography (CT) technique both ex vivo and in vivo, it is now demonstrated that even single-cell resolution can be obtained in the brain at least ex vivo. Working in a small animal model of malignant brain tumour, the image quality obtained with different imaging modalities was compared. To generate the brain tumour, 1 × 10(5) C6 glioma cells were loaded with gold nanoparticles and implanted in the right cerebral hemisphere of an adult rat. Raw data were acquired with absorption X-ray CT followed by a local tomography technique based on synchrotron X-ray absorption yielding single-cell resolution. The reconstructed synchrotron X-ray images were compared with images obtained by small animal magnetic resonance imaging. The presence of gold nanoparticles in the tumour tissue was verified in histological sections.
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Affiliation(s)
- Elisabeth Schültke
- Stereotactic and Functional Neurosurgery, Freiburg University Medical Center, Breisacher Strasse 64, Freiburg 79106, Germany
| | - Ralf Menk
- Sincrotrone Trieste SCpA, Science Park, Trieste, Italy
| | - Bernd Pinzer
- Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - Alberto Astolfo
- Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - Marco Stampanoni
- Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - Fulvia Arfelli
- Dipartimento di Fisica, Università di Trieste and Istituto Nazionale di Fisica Nucleare Sezione di Trieste, Trieste, Italy
| | - Laura-Adela Harsan
- Medical Physics, Radiology Department, Freiburg University Medical Center, Freiburg, Germany
| | - Guido Nikkhah
- Neurochirurgische Klinik, Universitätsklinikum Erlangen, Schwabachanlage 6, 91054 Erlangen, Germany
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18
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Dominguez-Medina S, Blankenburg J, Olson J, Landes CF, Link S. Adsorption of a Protein Monolayer via Hydrophobic Interactions Prevents Nanoparticle Aggregation under Harsh Environmental Conditions. ACS SUSTAINABLE CHEMISTRY & ENGINEERING 2013; 1:833-842. [PMID: 23914342 PMCID: PMC3731158 DOI: 10.1021/sc400042h] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
We find that citrate-stabilized gold nanoparticles aggregate and precipitate in saline solutions below the NaCl concentration of many bodily fluids and blood plasma. Our experiments indicate that this is due to complexation of the citrate anions with Na+ cations in solution. A dramatically enhanced colloidal stability is achieved when bovine serum albumin is adsorbed to the gold nanoparticle surface, completely preventing nanoparticle aggregation under harsh environmental conditions where the NaCl concentration is well beyond the isotonic point. Furthermore, we explore the mechanism of the formation of this albumin 'corona' and find that monolayer protein adsorption is most likely ruled by hydrophobic interactions. As for many nanotechnology-based biomedical and environmental applications, particle aggregation and sedimentation are undesirable and could substantially increase the risk of toxicological side-effects, the formation of the BSA corona presented here provides a low-cost bio-compatible strategy for nanoparticle stabilization and transport in highly ionic environments.
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Affiliation(s)
- Sergio Dominguez-Medina
- Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005
| | - Jan Blankenburg
- Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005
| | - Jana Olson
- Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005
| | - Christy F. Landes
- Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005
- Corresponding authors,
| | - Stephan Link
- Department of Chemistry, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005
- Department of Electrical and Computer Engineering, Laboratory for Nanophotonics, Rice University, Houston, Texas 77005
- Corresponding authors,
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