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Active diffusion and advection in Drosophila oocytes result from the interplay of actin and microtubules

Author

Listed:
  • Maik Drechsler

    (University of Cambridge)

  • Fabio Giavazzi

    (University of Milan)

  • Roberto Cerbino

    (University of Milan)

  • Isabel M. Palacios

    (University of Cambridge
    Queen Mary University of London)

Abstract

Transport in cells occurs via a delicate interplay of passive and active processes, including diffusion, directed transport and advection. Despite progress in super-resolution microscopy, discriminating and quantifying these processes is a challenge, requiring tracking of rapidly moving, sub-diffraction objects in a crowded, noisy environment. Here we use differential dynamic microscopy with different contrast mechanisms to provide a thorough characterization of the dynamics in the Drosophila oocyte. We study the movement of vesicles and the elusive motion of a cytoplasmic F-actin mesh, a known regulator of cytoplasmic flows. We find that cytoplasmic motility constitutes a combination of directed motion and random diffusion. While advection is mainly attributed to microtubules, we find that active diffusion is driven by the actin cytoskeleton, although it is also enhanced by the flow. We also find that an important dynamic link exists between vesicles and cytoplasmic F-actin motion, as recently suggested in mouse oocytes.

Suggested Citation

  • Maik Drechsler & Fabio Giavazzi & Roberto Cerbino & Isabel M. Palacios, 2017. "Active diffusion and advection in Drosophila oocytes result from the interplay of actin and microtubules," Nature Communications, Nature, vol. 8(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01414-6
    DOI: 10.1038/s41467-017-01414-6
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    Cited by:

    1. Adel Al Jord & Gaëlle Letort & Soline Chanet & Feng-Ching Tsai & Christophe Antoniewski & Adrien Eichmuller & Christelle Da Silva & Jean-René Huynh & Nir S. Gov & Raphaël Voituriez & Marie-Émilie Terr, 2022. "Cytoplasmic forces functionally reorganize nuclear condensates in oocytes," Nature Communications, Nature, vol. 13(1), pages 1-19, December.

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