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Biophysical nanotools for single-molecule dynamics

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Abstract

The focus of the cell biology field is now shifting from characterizing cellular activities to organelle and molecular behaviors. This process accompanies the development of new biophysical visualization techniques that offer high spatial and temporal resolutions with ultra-sensitivity and low cell toxicity. They allow the biology research community to observe dynamic behaviors from scales of single molecules, organelles, cells to organoids, and even live animal tissues. In this review, we summarize these biophysical techniques into two major classes: the mechanical nanotools like dynamic force spectroscopy (DFS) and the optical nanotools like single-molecule and super-resolution microscopy. We also discuss their applications in elucidating molecular dynamics and functionally mapping of interactions between inter-cellular networks and intra-cellular components, which is key to understanding cellular processes such as adhesion, trafficking, inheritance, and division.

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Acknowledgments

We thank Shaun P. Jackson, Dayong Jin, and their labs for helpful discussion.

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  1. Qian Peter Su and Lining Arnold Ju contributed equally to this work.

Authors and Affiliations

  1. Institute for Biomedical Materials & Devices (IBMD), Faculty of Science, University of Technology Sydney, Ultimo, New South Wales, 2007, Australia

    Qian Peter Su

  2. Charles Perkins Centre and Heart Research Institute, University of Sydney, Camperdown, New South Wales, 2006, Australia

    Lining Arnold Ju

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  1. Qian Peter Su
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Q.P.S. and L.A.J. contributed equally, prepared figures, and wrote and edited the manuscript together.

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Correspondence to Qian Peter Su or Lining Arnold Ju.

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Funding

This work was supported by National Heart Foundation of Australia Postdoctoral Fellowship 101285 (LJ), Sydney Local Health District - Annual Health Research Infrastructure Award (LJ), The Royal College of Pathologists of Australasia Kanematsu Research Award (LJ).

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Qian Peter Su declares that he has no conflict of interest. Lining Arnold Ju declares that he has no conflict of interest.

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This article does not contain any studies with human participants or animals performed by any of the authors.

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Su, Q.P., Ju, L.A. Biophysical nanotools for single-molecule dynamics. Biophys Rev 10, 1349–1357 (2018). https://doi.org/10.1007/s12551-018-0447-y

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