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相关概念视频

The Spindle Assembly Checkpoint02:19

The Spindle Assembly Checkpoint

3.2K
The spindle assembly checkpoint is a molecular surveillance mechanism ensuring the fidelity of chromosome segregation during anaphase. The checkpoint monitors the completion of all the prerequisite steps before chromosome segregation to determine whether the segregation process should proceed or be delayed.
Many proteins function together to control the spindle assembly checkpoint. Mutations affecting these proteins may allow cells to proceed into anaphase prematurely, resulting in the...
3.2K
Spindle Assembly02:50

Spindle Assembly

3.7K
Spindle assembly occurs through three, often coexisting, pathways – the centrosome-mediated pathway, the chromatin-mediated pathway, and the microtubule-mediated pathway – collectively contributing to form a robust spindle apparatus.
In most cells, centrosomes are the primary microtubule nucleation centers. In the centrosome-mediated pathway, the G2-prophase transition triggers centrosome maturation and increased microtubule nucleation. Progressive nucleation results in a...
3.7K
The Mitotic Spindle02:27

The Mitotic Spindle

6.7K
The mitotic spindle—or spindle apparatus—is a eukaryotic, cytoskeletal structure made up of long protein fibers called microtubules. Formed during cell division, the spindle separates sister chromatids and moves them to opposite ends of a parental cell, where the now individual chromosomes are distributed to two daughter cell nuclei.
The bipolar configuration of the mitotic spindle facilitates chromosomal segregation, preparing the cell for division. One mechanism that ensures...
6.7K

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相关实验视频

Updated: Jul 28, 2025

Measurement of Microtubule Dynamics by Spinning Disk Microscopy in Monopolar Mitotic Spindles
08:31

Measurement of Microtubule Dynamics by Spinning Disk Microscopy in Monopolar Mitotic Spindles

Published on: November 15, 2019

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螺旋追踪器:用于螺旋分析的自动和低成本的标记工作流程.

Zhongzhong Li, Yanze Jian, Jiatong Hu

    IEEE journal of biomedical and health informatics
    |May 30, 2023
    PubMed
    概括

    SpindlesTracker提供了一种低成本的自动化方法,用于使用光显微镜分析细胞分裂中的轴心动力学. 这种工具提高了跟踪线延长的准确性,大大降低了研究分子分裂的研究人员的数据标签成本.

    科学领域:

    • 细胞生物学 细胞生物学
    • 显微镜的使用方法
    • 计算生物学 计算生物学

    背景情况:

    • 在细胞分裂过程中对线动态的定量分析对于理解细胞分裂至关重要.
    • 现有的方法与光显微镜图像的噪音以及机器学习的高数据标签成本作斗争.
    • 需要高效,自动化和具有成本效益的工具来分析轴心动力学.

    研究的目的:

    • 开发一种全自动和低成本的工作流程,用于分析时间缩短图像中的动态机制.
    • 介绍SpindlesTracker,这是一个用于定量分析动态的新型系统.
    • 解决螺旋分析中现有的决定性和机器学习方法的局限性.

    主要方法:

    • 设计了YOLOX-SP网络,用于使用盒级监控准确检测线和端点定位.
    • 优化了SORT和MCP算法,用于线跟踪和骨架化.
    • 创建并使用了一个新的,注释的S.pombe数据集用于培训和评估.

    主要成果:

    • 在线索追踪器在线索检测中实现了84.1%的mAP,在终点检测中达到90%以上的准确性.
    • 该工作流将数据标签成本降低了60%,同时保持了高性能.
    • 追踪精度提高了1.3%,追踪精度提高了6.5%,平均线长度误差在1μm以内.

    更多相关视频

    Tracking and Quantifying Developmental Processes in C. elegans Using Open-source Tools
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    Tracking and Quantifying Developmental Processes in C. elegans Using Open-source Tools

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    Evaluation of the Spindle Assembly Checkpoint Integrity in Mouse Oocytes
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    Evaluation of the Spindle Assembly Checkpoint Integrity in Mouse Oocytes

    Published on: September 13, 2022

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    相关实验视频

    Last Updated: Jul 28, 2025

    Measurement of Microtubule Dynamics by Spinning Disk Microscopy in Monopolar Mitotic Spindles
    08:31

    Measurement of Microtubule Dynamics by Spinning Disk Microscopy in Monopolar Mitotic Spindles

    Published on: November 15, 2019

    6.3K
    Tracking and Quantifying Developmental Processes in C. elegans Using Open-source Tools
    10:41

    Tracking and Quantifying Developmental Processes in C. elegans Using Open-source Tools

    Published on: December 16, 2015

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    Evaluation of the Spindle Assembly Checkpoint Integrity in Mouse Oocytes
    10:09

    Evaluation of the Spindle Assembly Checkpoint Integrity in Mouse Oocytes

    Published on: September 13, 2022

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    结论:

    • SpindlesTracker提供了一种高效和准确的解决方案,用于从时差光显微镜分析线粒状动力学.
    • 与现有方法相比,开发的工作流大大降低了成本并提高了性能.
    • 这种方法对研究细胞分裂具有广泛的意义,并且可以适应用于分析其他丝状结构.