Quantitative phase velocimetry measures bulk intracellular transport of cell mass during the cell cycle.

Quantitative phase velocimetry measures bulk intracellular transport of cell mass during the cell cycle.
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DOI:
10.1038/s41598-022-10000-w
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发表时间:
2022-04-12
期刊:
影响因子:
4.6
通讯作者:
Zangle, Thomas A.
Zangle, Thomas A.
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Pradeep, Soorya;Zangle, Thomas A.

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细胞内物质的运输有助于维持体内平衡,但会被疾病和压力破坏。在这里,我们开发了定量相速度法(QPV)作为一种无标记的方法,使细胞内不可见的质量流动可见和可量化。我们将我们的方法与替代图像配准方法、理论误差模型和合成数据进行了基准测试。我们的方法不仅跟踪单个标记的颗粒或分子,还跟踪整个细胞中大量物质的流动。这使我们能够使用一种方法测量不同细胞区室内的扩散率,我们在这里使用这种方法直接比较核和细胞质的扩散率。作为一种无标签的方法,QPV可以用于长期跟踪,以捕获细胞周期的动态。
Transport of mass within cells helps maintain homeostasis and is disrupted by disease and stress. Here, we develop quantitative phase velocimetry (QPV) as a label-free approach to make the invisible flow of mass within cells visible and quantifiable. We benchmark our approach against alternative image registration methods, a theoretical error model, and synthetic data. Our method tracks not just individual labeled particles or molecules, but the entire flow of bulk material through the cell. This enables us to measure diffusivity within distinct cell compartments using a single approach, which we use here for direct comparison of nuclear and cytoplasmic diffusivity. As a label-free method, QPV can be used for long-term tracking to capture dynamics through the cell cycle.
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