• Journal of Innovative Optical Health Sciences
  • Vol. 15, Issue 5, 2250031 (2022)
Zhichao Liu1、2, Heng Zhang1, Luhong Jin1、2, Jincheng Chen1、2, Alexander Nedzved3, Sergey Ablameyko3, Qing Ma4, Jiahui Yu5, and Yingke Xu1、2、5、6、*
Author Affiliations
  • 1Department of Biomedical Engineering, MOE Key Laboratory of Biomedical Engineering, State Key Laboratory of Modern Optical Instrumentation, Zhejiang Provincial Key Laboratory of Cardio-Cerebral Vascular Detection Technology and Medicinal Effectiveness Appraisal, Zhejiang University, Hangzhou 310027, P. R. China
  • 2Alibaba-Zhejiang University Joint Research Center of Future Digital Healthcare, Hangzhou 310027, P. R. China
  • 3National Academy of Sciences, United Institute of Informatics Problems, Belarusian State University, Minsk 220012, Republic of Belarus
  • 4Hangzhou Dowell Photonics Measurement Company Limited, Hangzhou 310000, P. R. China
  • 5Binjiang Institute of Zhejiang University, Hangzhou 310053, P. R. China
  • 6Department of Endocrinology, Children’s Hospital of Zhejiang University School of Medicine, National Clinical Research Center for Children’s Health, Hangzhou, 310051 China
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    DOI: 10.1142/S1793545822500316 Cite this Article
    Zhichao Liu, Heng Zhang, Luhong Jin, Jincheng Chen, Alexander Nedzved, Sergey Ablameyko, Qing Ma, Jiahui Yu, Yingke Xu. U-Net-based deep learning for tracking and quantitative analysis of intracellular vesicles in time-lapse microscopy images[J]. Journal of Innovative Optical Health Sciences, 2022, 15(5): 2250031 Copy Citation Text show less

    Abstract

    Fluorescence microscopy has become an essential tool for biologists, to visualize the dynamics of intracellular structures with specific labeling. Quantitatively measuring the dynamics of moving objects inside the cell is pivotal for understanding of the underlying regulatory mechanism. Protein-containing vesicles are involved in various biological processes such as material transportation, organelle interaction, and hormonal regulation, whose dynamic characteristics are significant to disease diagnosis and drug screening. Although some algorithms have been developed for vesicle tracking, most of them have limited performance when dealing with images with low resolution, poor signal-to-noise ratio (SNR) and complicated motion. Here, we proposed a novel deep learning-based method for intracellular vesicle tracking. We trained the U-Net for vesicle localization and motion classification, with demonstrates great performance in both simulated datasets and real biological samples. By combination with fan-shaped tracker (FsT) we have previously developed, this hybrid new algorithm significantly improved the performance of particle tracking with the function of subsequently automated vesicle motion classification. Furthermore, its performance was further demonstrated in analyzing with vesicle dynamics in different temperature, which achieved reasonable outcomes. Thus, we anticipate that this novel method would have vast applications in analyzing the vesicle dynamics in living cells.Fluorescence microscopy has become an essential tool for biologists, to visualize the dynamics of intracellular structures with specific labeling. Quantitatively measuring the dynamics of moving objects inside the cell is pivotal for understanding of the underlying regulatory mechanism. Protein-containing vesicles are involved in various biological processes such as material transportation, organelle interaction, and hormonal regulation, whose dynamic characteristics are significant to disease diagnosis and drug screening. Although some algorithms have been developed for vesicle tracking, most of them have limited performance when dealing with images with low resolution, poor signal-to-noise ratio (SNR) and complicated motion. Here, we proposed a novel deep learning-based method for intracellular vesicle tracking. We trained the U-Net for vesicle localization and motion classification, with demonstrates great performance in both simulated datasets and real biological samples. By combination with fan-shaped tracker (FsT) we have previously developed, this hybrid new algorithm significantly improved the performance of particle tracking with the function of subsequently automated vesicle motion classification. Furthermore, its performance was further demonstrated in analyzing with vesicle dynamics in different temperature, which achieved reasonable outcomes. Thus, we anticipate that this novel method would have vast applications in analyzing the vesicle dynamics in living cells.
    Zhichao Liu, Heng Zhang, Luhong Jin, Jincheng Chen, Alexander Nedzved, Sergey Ablameyko, Qing Ma, Jiahui Yu, Yingke Xu. U-Net-based deep learning for tracking and quantitative analysis of intracellular vesicles in time-lapse microscopy images[J]. Journal of Innovative Optical Health Sciences, 2022, 15(5): 2250031
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