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Zangpo J, Kobayashi H. Isolation of phase edges using off-axis q-plate filters. OPTICS EXPRESS 2024; 32:12911-12925. [PMID: 38571099 DOI: 10.1364/oe.517822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/16/2024] [Indexed: 04/05/2024]
Abstract
Edge-enhanced microscopes with a q-plate have attracted more attention to enhance the edges of phase-amplitude objects in biological samples due to their capacity for all-directional edge enhancement, while differential interference-contrast microscopy enhances edges in only one-direction. However, the edge-enhanced microscopes cannot distinguish the edges of phase and amplitude objects, as both edges are equally enhanced. This study introduces a novel method for isolating the edge of a phase object from an amplitude object using an off-axis q-plate filter in a 4f system. Herein, we combined off-axis q-plates with four different displacements to isolate the phase object edge from the amplitude object. To demonstrate the proposed method, we conducted experiments using two distinct samples. The first sample comprised a phase test target surrounded by an aperture, and the second sample involved an overlap between the phase test target and a white hair with non-zero transmittance. In the samples, the isolated phase object edge is in good agreement with the theoretical expectations, and the amplitude object edge was reduced by approximately 93%. The proposed method is a novel and effective approach for isolating the edge of a phase object from an amplitude object and can be useful in various biological imaging applications.
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2
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Ngo TKN, Yang SJ, Mao BH, Nguyen TKM, Ng QD, Kuo YL, Tsai JH, Saw SN, Tu TY. A deep learning-based pipeline for analyzing the influences of interfacial mechanochemical microenvironments on spheroid invasion using differential interference contrast microscopic images. Mater Today Bio 2023; 23:100820. [PMID: 37810748 PMCID: PMC10558776 DOI: 10.1016/j.mtbio.2023.100820] [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: 02/18/2023] [Revised: 07/16/2023] [Accepted: 09/24/2023] [Indexed: 10/10/2023] Open
Abstract
Metastasis is the leading cause of cancer-related deaths. During this process, cancer cells are likely to navigate discrete tissue-tissue interfaces, enabling them to infiltrate and spread throughout the body. Three-dimensional (3D) spheroid modeling is receiving more attention due to its strengths in studying the invasive behavior of metastatic cancer cells. While microscopy is a conventional approach for investigating 3D invasion, post-invasion image analysis, which is a time-consuming process, remains a significant challenge for researchers. In this study, we presented an image processing pipeline that utilized a deep learning (DL) solution, with an encoder-decoder architecture, to assess and characterize the invasion dynamics of tumor spheroids. The developed models, equipped with feature extraction and measurement capabilities, could be successfully utilized for the automated segmentation of the invasive protrusions as well as the core region of spheroids situated within interfacial microenvironments with distinct mechanochemical factors. Our findings suggest that a combination of the spheroid culture and DL-based image analysis enable identification of time-lapse migratory patterns for tumor spheroids above matrix-substrate interfaces, thus paving the foundation for delineating the mechanism of local invasion during cancer metastasis.
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Affiliation(s)
- Thi Kim Ngan Ngo
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Sze Jue Yang
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Bin-Hsu Mao
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Thi Kim Mai Nguyen
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
| | - Qi Ding Ng
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yao-Lung Kuo
- Department of Surgery, College of Medicine, National Cheng Kung University, Tainan, 70101, Taiwan
- Department of Surgery, National Cheng Kung University Hospital, Tainan, 70101, Taiwan
| | - Jui-Hung Tsai
- Department of Internal Medicine, National Cheng Kung University Hospital, Tainan, 70101, Taiwan
| | - Shier Nee Saw
- Department of Artificial Intelligence, Faculty of Computer Science and Information Technology, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Ting-Yuan Tu
- Department of Biomedical Engineering, College of Engineering, National Cheng Kung University, Tainan, 70101, Taiwan
- Medical Device Innovation Center, National Cheng Kung University, Tainan, 70101, Taiwan
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3
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Zangpo J, Kawabe T, Kobayashi H. Edge-enhanced microscopy of complex objects using scalar and vectorial vortex filtering. OPTICS EXPRESS 2023; 31:38388-38399. [PMID: 38017946 DOI: 10.1364/oe.502890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 10/21/2023] [Indexed: 11/30/2023]
Abstract
Recently, a 4f system containing a q-plate has been used to perform edge detection and enhancement of amplitude or phase objects. However, only a few studies have concentrated on edge enhancement of complex phase-amplitude objects. Here we experimentally verified the functional difference between scalar and vectorial vortex filtering with the q-plate using an onion cell as a complex object and the vectorial vortex filtering successfully enhanced the edges of phase and amplitude objects in the phase-amplitude object. One problem, however, is indistinguishability of the equally-enhanced edges of the phase and amplitude objects. To address this issue, we propose a method to isolate the edge of the phase object from the edge of the amplitude object using off-axis beam illumination. We theoretically calculated the isolation of the edge of the phase object from the amplitude object, and verified via numerical simulations.
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4
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Chong JWR, Khoo KS, Chew KW, Ting HY, Show PL. Trends in digital image processing of isolated microalgae by incorporating classification algorithm. Biotechnol Adv 2023; 63:108095. [PMID: 36608745 DOI: 10.1016/j.biotechadv.2023.108095] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Revised: 12/17/2022] [Accepted: 01/01/2023] [Indexed: 01/05/2023]
Abstract
Identification of microalgae species is of importance due to the uprising of harmful algae blooms affecting both the aquatic habitat and human health. Despite this occurence, microalgae have been identified as a green biomass and alternative source due to its promising bioactive compounds accumulation that play a significant role in many industrial applications. Recently, microalgae species identification has been conducted through DNA analysis and various microscopy techniques such as light, scanning electron, transmission electron, and atomic force -microscopy. The aforementioned procedures have encouraged researchers to consider alternate ways due to limitations such as costly validation, requiring skilled taxonomists, prolonged analysis, and low accuracy. This review highlights the potential innovations in digital microscopy with the incorporation of both hardware and software that can produce a reliable recognition, detection, enumeration, and real-time acquisition of microalgae species. Several steps such as image acquisition, processing, feature extraction, and selection are discussed, for the purpose of generating high image quality by removing unwanted artifacts and noise from the background. These steps of identification of microalgae species is performed by reliable image classification through machine learning as well as deep learning algorithms such as artificial neural networks, support vector machines, and convolutional neural networks. Overall, this review provides comprehensive insights into numerous possibilities of microalgae image identification, image pre-processing, and machine learning techniques to address the challenges in developing a robust digital classification tool for the future.
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Affiliation(s)
- Jun Wei Roy Chong
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor Darul Ehsan, Malaysia
| | - Kuan Shiong Khoo
- Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan.
| | - Kit Wayne Chew
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459 Singapore
| | - Huong-Yong Ting
- Drone Research and Application Centre, University of Technology Sarawak, No.1, Jalan Universiti, 96000 Sibu, Sarawak, Malaysia
| | - Pau Loke Show
- Zhejiang Provincial Key Laboratory for Subtropical Water Environment and Marine Biological Resources Protection, Wenzhou University, Wenzhou 325035, China; Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Selangor Darul Ehsan, Malaysia; Department of Sustainable Engineering, Saveetha School of Engineering, SIMATS, Chennai 602105, India.
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5
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Aslam I, Roeffaers MBJ. Carbonaceous Nanoparticle Air Pollution: Toxicity and Detection in Biological Samples. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12223948. [PMID: 36432235 PMCID: PMC9698098 DOI: 10.3390/nano12223948] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/04/2022] [Accepted: 11/05/2022] [Indexed: 05/27/2023]
Abstract
Among the different air pollutants, particulate matter (PM) is of great concern due to its abundant presence in the atmosphere, which results in adverse effects on the environment and human health. The different components of PM can be classified based on their physicochemical properties. Carbonaceous particles (CPs) constitute a major fraction of ultrafine PM and have the most harmful effects. Herein, we present a detailed overview of the main components of CPs, e.g., carbon black (CB), black carbon (BC), and brown carbon (BrC), from natural and anthropogenic sources. The emission sources and the adverse effects of CPs on the environment and human health are discussed. Particularly, we provide a detailed overview of the reported toxic effects of CPs in the human body, such as respiratory effects, cardiovascular effects, neurodegenerative effects, carcinogenic effects, etc. In addition, we also discuss the challenges faced by and limitations of the available analytical techniques for the qualitative and quantitative detection of CPs in atmospheric and biological samples. Considering the heterogeneous nature of CPs and biological samples, a detailed overview of different analytical techniques for the detection of CPs in (real-exposure) biological samples is also provided. This review provides useful insights into the classification, toxicity, and detection of CPs in biological samples.
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6
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Jiang Q, Sudalagunta P, Silva MC, Canevarolo RR, Zhao X, Ahmed KT, Alugubelli RR, DeAvila G, Tungesvik A, Perez L, Gatenby RA, Gillies RJ, Baz R, Meads MB, Shain KH, Silva AS, Zhang W. CancerCellTracker: a brightfield time-lapse microscopy framework for cancer drug sensitivity estimation. Bioinformatics 2022; 38:4002-4010. [PMID: 35751591 PMCID: PMC9991899 DOI: 10.1093/bioinformatics/btac417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 05/18/2022] [Accepted: 06/22/2022] [Indexed: 12/24/2022] Open
Abstract
MOTIVATION Time-lapse microscopy is a powerful technique that relies on images of live cells cultured ex vivo that are captured at regular intervals of time to describe and quantify their behavior under certain experimental conditions. This imaging method has great potential in advancing the field of precision oncology by quantifying the response of cancer cells to various therapies and identifying the most efficacious treatment for a given patient. Digital image processing algorithms developed so far require high-resolution images involving very few cells originating from homogeneous cell line populations. We propose a novel framework that tracks cancer cells to capture their behavior and quantify cell viability to inform clinical decisions in a high-throughput manner. RESULTS The brightfield microscopy images a large number of patient-derived cells in an ex vivo reconstruction of the tumor microenvironment treated with 31 drugs for up to 6 days. We developed a robust and user-friendly pipeline CancerCellTracker that detects cells in co-culture, tracks these cells across time and identifies cell death events using changes in cell attributes. We validated our computational pipeline by comparing the timing of cell death estimates by CancerCellTracker from brightfield images and a fluorescent channel featuring ethidium homodimer. We benchmarked our results using a state-of-the-art algorithm implemented in ImageJ and previously published in the literature. We highlighted CancerCellTracker's efficiency in estimating the percentage of live cells in the presence of bone marrow stromal cells. AVAILABILITY AND IMPLEMENTATION https://github.com/compbiolabucf/CancerCellTracker. SUPPLEMENTARY INFORMATION Supplementary data are available at Bioinformatics online.
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Affiliation(s)
- Qibing Jiang
- Department of Computer Science, University of Central Florida, Orlando, FL 32816, USA
| | - Praneeth Sudalagunta
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Maria C Silva
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Rafael R Canevarolo
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Xiaohong Zhao
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | | | - Raghunandan Reddy Alugubelli
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Gabriel DeAvila
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Alexandre Tungesvik
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Lia Perez
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Robert A Gatenby
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Robert J Gillies
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Rachid Baz
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Mark B Meads
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Kenneth H Shain
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Ariosto S Silva
- Departments of Malignant Hematology and Chemical Biology and Molecular Medicine, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL 33612, USA
| | - Wei Zhang
- Department of Computer Science, University of Central Florida, Orlando, FL 32816, USA
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7
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Ali MAS, Hollo K, Laasfeld T, Torp J, Tahk MJ, Rinken A, Palo K, Parts L, Fishman D. ArtSeg-Artifact segmentation and removal in brightfield cell microscopy images without manual pixel-level annotations. Sci Rep 2022; 12:11404. [PMID: 35794119 PMCID: PMC9259686 DOI: 10.1038/s41598-022-14703-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 06/10/2022] [Indexed: 11/10/2022] Open
Abstract
Brightfield cell microscopy is a foundational tool in life sciences. The acquired images are prone to contain visual artifacts that hinder downstream analysis, and automatically removing them is therefore of great practical interest. Deep convolutional neural networks are state-of-the-art for image segmentation, but require pixel-level annotations, which are time-consuming to produce. Here, we propose ScoreCAM-U-Net, a pipeline to segment artifactual regions in brightfield images with limited user input. The model is trained using only image-level labels, so the process is faster by orders of magnitude compared to pixel-level annotation, but without substantially sacrificing the segmentation performance. We confirm that artifacts indeed exist with different shapes and sizes in three different brightfield microscopy image datasets, and distort downstream analyses such as nuclei segmentation, morphometry and fluorescence intensity quantification. We then demonstrate that our automated artifact removal ameliorates this problem. Such rapid cleaning of acquired images using the power of deep learning models is likely to become a standard step for all large scale microscopy experiments.
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Affiliation(s)
- Mohammed A S Ali
- Department of Computer Science, University of Tartu, Narva mnt 18, 51009, Tartu, Estonia
| | - Kaspar Hollo
- Department of Computer Science, University of Tartu, Narva mnt 18, 51009, Tartu, Estonia
| | - Tõnis Laasfeld
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - Jane Torp
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - Maris-Johanna Tahk
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - Ago Rinken
- Institute of Chemistry, University of Tartu, Ravila 14a, 50411, Tartu, Estonia
| | - Kaupo Palo
- PerkinElmer Cellular Technologies Germany GmbH, Hamburg, Germany
| | - Leopold Parts
- Department of Computer Science, University of Tartu, Narva mnt 18, 51009, Tartu, Estonia.
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, CB10 1SA, Cambridgeshire, UK.
| | - Dmytro Fishman
- Department of Computer Science, University of Tartu, Narva mnt 18, 51009, Tartu, Estonia.
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8
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PLGA-Based Composites for Various Biomedical Applications. Int J Mol Sci 2022; 23:ijms23042034. [PMID: 35216149 PMCID: PMC8876940 DOI: 10.3390/ijms23042034] [Citation(s) in RCA: 80] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/12/2022] Open
Abstract
Polymeric materials have been extensively explored in the field of nanomedicine; within them, poly lactic-co-glycolic acid (PLGA) holds a prominent position in micro- and nanotechnology due to its biocompatibility and controllable biodegradability. In this review we focus on the combination of PLGA with different inorganic nanomaterials in the form of nanocomposites to overcome the polymer’s limitations and extend its field of applications. We discuss their physicochemical properties and a variety of well-established synthesis methods for the preparation of different PLGA-based materials. Recent progress in the design and biomedical applications of PLGA-based materials are thoroughly discussed to provide a framework for future research.
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9
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Hajdowska K, Student S, Borys D. Graph based method for cell segmentation and detection in live-cell fluorescence microscope imaging. Biomed Signal Process Control 2022. [DOI: 10.1016/j.bspc.2021.103071] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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10
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Makvandi P, Kirkby M, Hutton ARJ, Shabani M, Yiu CKY, Baghbantaraghdari Z, Jamaledin R, Carlotti M, Mazzolai B, Mattoli V, Donnelly RF. Engineering Microneedle Patches for Improved Penetration: Analysis, Skin Models and Factors Affecting Needle Insertion. NANO-MICRO LETTERS 2021; 13:93. [PMID: 34138349 PMCID: PMC8006208 DOI: 10.1007/s40820-021-00611-9] [Citation(s) in RCA: 126] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/05/2021] [Indexed: 05/14/2023]
Abstract
Transdermal microneedle (MN) patches are a promising tool used to transport a wide variety of active compounds into the skin. To serve as a substitute for common hypodermic needles, MNs must pierce the human stratum corneum (~ 10 to 20 µm), without rupturing or bending during penetration. This ensures that the cargo is released at the predetermined place and time. Therefore, the ability of MN patches to sufficiently pierce the skin is a crucial requirement. In the current review, the pain signal and its management during application of MNs and typical hypodermic needles are presented and compared. This is followed by a discussion on mechanical analysis and skin models used for insertion tests before application to clinical practice. Factors that affect insertion (e.g., geometry, material composition and cross-linking of MNs), along with recent advancements in developed strategies (e.g., insertion responsive patches and 3D printed biomimetic MNs using two-photon lithography) to improve the skin penetration are highlighted to provide a backdrop for future research.
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Affiliation(s)
- Pooyan Makvandi
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy.
| | - Melissa Kirkby
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Aaron R J Hutton
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK
| | - Majid Shabani
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
- The BioRobotics Institute, Scuola Superiore Sant'Anna, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Cynthia K Y Yiu
- Paediatric Dentistry and Orthodontics, Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, Hong Kong SAR, China
| | - Zahra Baghbantaraghdari
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125, Naples, Italy
| | - Rezvan Jamaledin
- Department of Chemical, Materials and Industrial Production Engineering, University of Naples Federico II, 80125, Naples, Italy
- Center for Advanced Biomaterials for Health Care (iit@CRIB), Italian Institute of Technology, 80125, Naples, Italy
| | - Marco Carlotti
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Barbara Mazzolai
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy
| | - Virgilio Mattoli
- Istituto Italiano Di Tecnologia, Centre for Materials Interface, Viale Rinaldo Piaggio 34, 56025, Pontedera, Pisa, Italy.
| | - Ryan F Donnelly
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, UK.
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11
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Rubessa M, Wheeler MB. Label-free microscopy: A non-invasive new tool to assess gametes and embryo quality. Theriogenology 2020; 150:241-246. [PMID: 32088035 DOI: 10.1016/j.theriogenology.2020.01.065] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 01/28/2020] [Indexed: 10/25/2022]
Abstract
In PubMed, it is possible to find more than 40,000 papers on embryo evaluation in various species. However, there is no consensus or gold standard method on how to assess their developmental potential. In assisted reproduction the evaluation "problem" is not only limited to embryos but involves the gametes as well. This manuscript provides an overview of some possible applications of label-free microscopy, in particular we describe the potential of the holographic microscopy in the IVF lab. We describe the positive aspects of several currently available microscopy label-free systems. In conclusion, we believe that a next generation of microscopy able to give objective markers for gamete and embryo quality is around the corner.
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Affiliation(s)
| | - Matthew B Wheeler
- Dept. Animal Sciences, USA; Beckman Institute for Advanced Science and Technology, USA; Dept. Bioengineering, The University of Illinois at Urbana-Champaign, USA
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12
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Domarco O, Kieler C, Pirker C, Dinhof C, Englinger B, Reisecker JM, Timelthaler G, García MD, Peinador C, Keppler BK, Berger W, Terenzi A. Subcellular Duplex DNA and G‐Quadruplex Interaction Profiling of a Hexagonal Pt
II
Metallacycle. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201900934] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Olaya Domarco
- Universidade da Coruña Departamento de Química y Centro de Investigacións Científicas Avanzadas E-15071 A Coruña Spain
| | - Claudia Kieler
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Christine Pirker
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Carina Dinhof
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Bernhard Englinger
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Johannes M. Reisecker
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Gerald Timelthaler
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Marcos D. García
- Universidade da Coruña Departamento de Química y Centro de Investigacións Científicas Avanzadas E-15071 A Coruña Spain
| | - Carlos Peinador
- Universidade da Coruña Departamento de Química y Centro de Investigacións Científicas Avanzadas E-15071 A Coruña Spain
| | - Bernhard K. Keppler
- University of Vienna Institute of Inorganic Chemistry Waehringerstrasse 42 A-1090 Vienna Austria
| | - Walter Berger
- Medical University of Vienna Department of Medicine I Institute of Cancer Research and Comprehensive Cancer Center Borschkegasse 8a A-1090 Vienna Austria
| | - Alessio Terenzi
- University of Vienna Institute of Inorganic Chemistry Waehringerstrasse 42 A-1090 Vienna Austria
- Present address: Donostia International Physics Center Paseo Manuel de Lardizabal 4 20018 Donostia Spain
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13
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Domarco O, Kieler C, Pirker C, Dinhof C, Englinger B, Reisecker JM, Timelthaler G, García MD, Peinador C, Keppler BK, Berger W, Terenzi A. Subcellular Duplex DNA and G-Quadruplex Interaction Profiling of a Hexagonal Pt II Metallacycle. Angew Chem Int Ed Engl 2019; 58:8007-8012. [PMID: 31002438 PMCID: PMC6563712 DOI: 10.1002/anie.201900934] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 04/17/2019] [Indexed: 12/21/2022]
Abstract
Metal-driven self-assembly afforded a multitude of fascinating supramolecular coordination complexes (SCCs) with applications as catalysts, host-guest, and stimuli-responsive systems. However, the interest in the biological applications of SCCs is only starting to emerge and thorough characterization of their behavior in biological milieus is still lacking. Herein, we report on the synthesis and detailed in-cell tracking of a Pt2 L2 metallacycle. We show that our hexagonal supramolecule accumulates in cancer cell nuclei, exerting a distinctive blue fluorescence staining of chromatin resistant to UV photobleaching selectively in nucleolar G4-rich regions. SCC co-localizes with epitopes of the quadruplex-specific antibody BG4 and replaces other well-known G4 stabilizers. Moreover, the photophysical changes accompanying the metallacycle binding to G4s in solution (fluorescence quenching, absorption enhancement) also take place intracellularly, allowing its subcellular interaction tracking.
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Affiliation(s)
- Olaya Domarco
- Universidade da Coruña, Departamento de Química y Centro de Investigacións Científicas Avanzadas, E-15071 A, Coruña, Spain
| | - Claudia Kieler
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Christine Pirker
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Carina Dinhof
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Bernhard Englinger
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Johannes M Reisecker
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Gerald Timelthaler
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Marcos D García
- Universidade da Coruña, Departamento de Química y Centro de Investigacións Científicas Avanzadas, E-15071 A, Coruña, Spain
| | - Carlos Peinador
- Universidade da Coruña, Departamento de Química y Centro de Investigacións Científicas Avanzadas, E-15071 A, Coruña, Spain
| | - Bernhard K Keppler
- University of Vienna, Institute of Inorganic Chemistry, Waehringerstrasse 42, A-1090, Vienna, Austria
| | - Walter Berger
- Medical University of Vienna, Department of Medicine I, Institute of Cancer Research and Comprehensive Cancer Center, Borschkegasse 8a, A-1090, Vienna, Austria
| | - Alessio Terenzi
- University of Vienna, Institute of Inorganic Chemistry, Waehringerstrasse 42, A-1090, Vienna, Austria.,Present address: Donostia International Physics Center, Paseo Manuel de Lardizabal 4, 20018, Donostia, Spain
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Khlebtsov N, Bogatyrev V, Dykman L, Khlebtsov B, Staroverov S, Shirokov A, Matora L, Khanadeev V, Pylaev T, Tsyganova N, Terentyuk G. Analytical and theranostic applications of gold nanoparticles and multifunctional nanocomposites. Theranostics 2013; 3:167-80. [PMID: 23471188 PMCID: PMC3590586 DOI: 10.7150/thno.5716] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Accepted: 01/22/2013] [Indexed: 01/10/2023] Open
Abstract
Gold nanoparticles (GNPs) and GNP-based multifunctional nanocomposites are the subject of intensive studies and biomedical applications. This minireview summarizes our recent efforts in analytical and theranostic applications of engineered GNPs and nanocomposites by using plasmonic properties of GNPs and various optical techniques. Specifically, we consider analytical biosensing; visualization and bioimaging of bacterial, mammalian, and plant cells; photodynamic treatment of pathogenic bacteria; and photothermal therapy of xenografted tumors. In addition to recently published reports, we discuss new data on dot immunoassay diagnostics of mycobacteria, multiplexed immunoelectron microscopy analysis of Azospirillum brasilense, materno-embryonic transfer of GNPs in pregnant rats, and combined photodynamic and photothermal treatment of rat xenografted tumors with gold nanorods covered by a mesoporous silica shell doped with hematoporphyrin.
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15
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Ringe E, Sharma B, Henry AI, Marks LD, Van Duyne RP. Single nanoparticle plasmonics. Phys Chem Chem Phys 2013; 15:4110-29. [DOI: 10.1039/c3cp44574g] [Citation(s) in RCA: 160] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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