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  Confined environments induce polarized paraspeckle condensates

Todorovski, V., McCluggage, F., Li, Y., Meid, A., Spatz, J. P., Holle, A. W., et al. (2023). Confined environments induce polarized paraspeckle condensates. Communications Biology, 6: 145, pp. 1-6. doi:10.1038/s42003-023-04528-4.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000C-8A6A-2 Version Permalink: https://hdl.handle.net/21.11116/0000-000C-8EED-A
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 Creators:
Todorovski, Vanja, Author
McCluggage, Finn, Author
Li, Yixuan, Author
Meid, Annika1, 2, Author           
Spatz, Joachim P.1, 2, Author           
Holle, Andrew W., Author
Fox, Archa H., Author
Choi, Yu Suk, Author
Affiliations:
1Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society, ou_2364731              
2Biophysical Chemistry, Institute of Physical Chemistry, University of Heidelberg, 69120 Heidelberg, Germany, ou_persistent22              

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 Abstract: Cancer cells experience confinement as they navigate the tumour microenvironment during metastasis. Recent studies have revealed that the nucleus can function as a 'ruler' for measuring physical confinement via membrane tension, allowing for compression-sensitive changes in migration. Cell nuclei contain many nuclear bodies that form when their components phase separate and condense within permissive local regions within the nucleus. However, how sub-nuclear organisation and phase separation changes with cell confinement and compression is largely unknown. Here we focus on paraspeckles, stress-responsive subnuclear bodies that form by phase separation around the long non-coding RNA NEAT1. As cells entered moderate confinement, a significant increase in paraspeckle number and size was observed compared to unconfined cells. Paraspeckle polarization bias towards the leading edge was also observed in confinement, correlating with regions of euchromatin. Increasing paraspeckle abundance resulted in increases in confined migration likelihood, speed, and directionality, as well as an enhancement of paraspeckle polarization towards the leading edge. This polarization of paraspeckle condensates may play a key role in regulating confined migration and invasion in cancer cells, and illustrates the utility of microchannel-based assays for identifying phenomena not observed on 2D or 3D bulk substrates.

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Language(s): eng - English
 Dates: 2021-11-252023-01-242023-02-03
 Publication Status: Published online
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: URI: https://pubmed.ncbi.nlm.nih.gov/36737664/
DOI: 10.1038/s42003-023-04528-4
 Degree: -

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Title: Communications Biology
Source Genre: Journal
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Publ. Info: London : Springer Nature
Pages: - Volume / Issue: 6 Sequence Number: 145 Start / End Page: 1 - 6 Identifier: ISSN: 2399-3642
CoNE: https://pure.mpg.de/cone/journals/resource/2399-3642