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Huang J, Wang J, Guo L, Wu D, Yan S, Chang T, Cui H. Organelle Imaging with Terahertz Scattering-Type Scanning Near-Field Microscope. Int J Mol Sci 2023; 24:13630. [PMID: 37686436 PMCID: PMC10488156 DOI: 10.3390/ijms241713630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/24/2023] [Accepted: 08/27/2023] [Indexed: 09/10/2023] Open
Abstract
Organelles play core roles in living beings, especially in internal cellular actions, but the hidden information inside the cell is difficult to extract in a label-free manner. In recent years, terahertz (THz) imaging has attracted much attention because of its penetration depth in nonpolar and non-metallic materials and label-free, non-invasive and non-ionizing ability to obtain the interior information of bio-samples. However, the low spatial resolution of traditional far-field THz imaging systems and the weak dielectric contrast of biological samples hinder the application of this technology in the biological field. In this paper, we used an advanced THz scattering near-field imaging method for detecting chloroplasts on gold substrate with nano-flatness combined with an image processing method to remove the background noise and successfully obtained the subcellular-grade internal reticular structure from an Arabidopsis chloroplast THz image. In contrast, little inner information could be observed in the tea chloroplast in similar THz images. Further, transmission electron microscopy (TEM) and mass spectroscopy (MS) were also used to detect structural and chemical differences inside the chloroplasts of Arabidopsis and tea plants. The preliminary results suggested that the interspecific different THz information is related to the internal spatial structures of chloroplasts and metabolite differences among species. Therefore, this method could open a new way to study the structure of individual organelles.
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Affiliation(s)
- Jie Huang
- State Key Laboratory of Rice Biology, Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029, China; (J.H.); (D.W.)
| | - Jie Wang
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; (J.W.); (H.C.)
| | - Linghui Guo
- National Key Laboratory for Germplasm Innovation & Utilization of Horticultural Crops, Wuhan 430070, China;
| | - Dianxing Wu
- State Key Laboratory of Rice Biology, Institute of Nuclear Agricultural Sciences, Zhejiang University, Hangzhou 310029, China; (J.H.); (D.W.)
| | - Shihan Yan
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; (J.W.); (H.C.)
| | - Tianying Chang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Hongliang Cui
- Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China; (J.W.); (H.C.)
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
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Shi S, Yuan S, Zhou J, Jiang P. Terahertz technology and its applications in head and neck diseases. iScience 2023; 26:107060. [PMID: 37534152 PMCID: PMC10391736 DOI: 10.1016/j.isci.2023.107060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/04/2023] Open
Abstract
The terahertz (THz) radiation refers to electromagnetic waves between infrared and millimeter waves. THz technology has shown a significant potential for medical diagnosis and biomedical applications over the past three decades. Therefore, exploring the biological effects of THz waves has become an important new field in life sciences. Specifically, THz radiation has been proved to be able to diagnose and treat several head and neck diseases. In this review, we primarily discuss the biological characteristics of THz waves and clinical applications of THz technology, focusing on the research progress of THz technology in head and neck diseases (brain cancer, hypopharyngeal cancer, oral diseases, thyroid nodules, Alzheimer's disease, eyes diseases, and otitis). The future application perspectives of THz technologies in head and neck diseases are also highlighted and proposed.
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Affiliation(s)
- Shenggan Shi
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Shuqin Yuan
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
| | - Jun Zhou
- School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - Peidu Jiang
- Department of Pharmacy, Personalized Drug Therapy Key Laboratory of Sichuan Province, Sichuan Provincial People’s Hospital, University of Electronic Science and Technology of China, Chengdu, China
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3
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Wang J, Peng L, Han D, Zheng T, Chang T, Cui HL. Label-free detection and identification of single bacteria via terahertz near-field imaging. Front Microbiol 2023; 14:1195448. [PMID: 37333650 PMCID: PMC10272414 DOI: 10.3389/fmicb.2023.1195448] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 05/16/2023] [Indexed: 06/20/2023] Open
Abstract
In recent years, terahertz (THz) imaging has attracted much attention because of its ability to obtain physical and chemical information in a label-free, noninvasive and nonionizing manner. However, the low spatial resolution of traditional THz imaging systems and the weak dielectric response of biological samples hinder the application of this technology in the biomedical field. In this paper, we report a new THz near-field imaging method for a single bacteria, through the coupling effect of nanoscale radius of probe and platinum gold substrate, which greatly enhances THz near-field signal of biological samples. A THz super-resolution image of bacteria has been successfully obtained by strictly controlling the relevant test parameters such as tip parameters and driving amplitude. By analyzing and processing the THz spectral image, the morphology and inner structure of bacteria have been observed. The method has been used to detect and identify Escherichia coli represented by Gram-negative bacteria and Staphylococcus aureus represented by Gram-positive bacteria. This application provides a new label-free, noninvasive and nonionizing testing protocol for the detection of single bacteria.
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Affiliation(s)
- Jie Wang
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, China
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Liang Peng
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, China
| | - Dongxue Han
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, China
| | - Teng Zheng
- School of Information and Electrical Engineering, Hangzhou City University, Hangzhou, China
| | - Tianying Chang
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Hong-Liang Cui
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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Tarabichi S, Al-Raeei M, Solieva O. Improving the accuracy of tumor surgery by THz imaging and making the results of pathological anatomy faster by THz spectroscopy. BENI-SUEF UNIVERSITY JOURNAL OF BASIC AND APPLIED SCIENCES 2022. [DOI: 10.1186/s43088-022-00201-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The terahertz radiation is a specific part of the electromagnetic radiation spectrum and has multiple significant applications in multiple scientific researches such as the applications in the medicine. An important application of the terahertz is its use in tumor imaging which is very important in the tumor surgery; however, lots of physicians and workers in the medical field have little information or having no information at all, dealing with this significant part of the electromagnetic spectrum.
Results
In this work, we interviewed a number of local surgeons in Syrian Arab Republic, who reported that they visually delineate the contour of tumors to be removed, and in order to reduce the number of future possible interventions, a large margin of healthy tissue is often excised. Furthermore, a number of pathologists who reported that preparing samples of excised tissues for examination takes a long period of time which may extend to several days, and that the results of histopathology indicate in some cases the integrity of removed tissues.
Conclusion
We have found that a significant number of participants in the survey demonstrated that the importance of dealing with terahertz imaging and terahertz spectroscopy, encouraging to implement the technique in the Syrian Arab Republic.
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Terahertz radiation in ophthalmology (review). ACTA BIOMEDICA SCIENTIFICA 2021. [DOI: 10.29413/abs.2021-6.6-1.20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Terahertz (THz) radiation is one of the new, intensively studied interdisciplinary fi elds of scientifi c knowledge, including medicine, in the fi rst decades of the 21st century. At the beginning of this article (review), in a brief form, the basic statements on THz radiation, the main parameters and properties are presented; the modern THz biophtonics technologies used in biology and medicine are considered – THz refl ectometry, THz spectroscopy methods. Then a number of directions and examples of possible use of THz technologies in biology and medicine, including pharmaceuticals, are given. The main part of the review presents the progress of experimental research and the prospects for the clinical application of medical technologies of THz spectroscopy, THz imaging, in ophthalmology in the study of the morphological and functional state of the ocular surface structures, diagnosis, medical testing, and treatment of ophthalmopathology of the ocular surface. The article concludes with a review of experimental studies on the safety of using THz waves for medical diagnostics and treatment of ophthalmopathology. In the fi nal part, the main problems and prospects of introducing medical THz technologies into the clinical practice of an ophthalmologist are considered.
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Ke L, Zhang N, Wu QYS, Gorelik S, Abdelaziem A, Liu Z, Teo EPW, Mehta JS, Liu YC. In vivo sensing of rabbit cornea by terahertz technology. JOURNAL OF BIOPHOTONICS 2021; 14:e202100130. [PMID: 34105892 DOI: 10.1002/jbio.202100130] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 06/03/2021] [Accepted: 06/04/2021] [Indexed: 06/12/2023]
Abstract
A Novel scalable approach using Terahertz (THz) waves together with the electromagnetic field simulation was applied to investigate four rabbits of eight rabbit corneas in vivo. One eye of each rabbits' corneas was edema induced; the other eye of the corneas served as the control. The simulation revealed the propagation of THz waves at a certain distance along the sub-surface of the cornea. THz spectra have been collected close to the corneal surface by deviating the direct reflection of the THz beam for the edema cornea, the reflected wave intensity for edema corneas is generally larger compared with the control cornea. Upon edema becomes severe at the end of the observation, the reflected wave intensities obtained by detector corresponding to the corneal deep stroma layer approach to the same value for all observed corneas. Good correlation is observed between central corneal thickness measurements and THz wave reflection signal intensities. Our results demonstrated that THz spectroscopy technique could obtain the information from different corneal sublayers.
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Affiliation(s)
- Lin Ke
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*Star), Singapore
| | - Nan Zhang
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*Star), Singapore
| | - Qing Yang Steve Wu
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*Star), Singapore
| | - Sergey Gorelik
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*Star), Singapore
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A*STAR), Singapore
| | - Ali Abdelaziem
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*Star), Singapore
- School of Material Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore
- National Institute of Laser Enhanced Sciences (NILES), Cairo University, Giza, Egypt
| | - Zheng Liu
- School of Material Science and Engineering (MSE), Nanyang Technological University (NTU), Singapore
| | | | - Jodhbir S Mehta
- Singapore Eye Research Institute (SERI), Singapore
- Singapore National Eye Centre (SNEC), Singapore
- Ophthalmology and Visual Science Academic Clinical Research Program, Duke-NUS Medical School, Singapore
| | - Yu-Chi Liu
- Singapore Eye Research Institute (SERI), Singapore
- Singapore National Eye Centre (SNEC), Singapore
- Ophthalmology and Visual Science Academic Clinical Research Program, Duke-NUS Medical School, Singapore
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