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Accelerated cell divisions drive the outgrowth of the regenerating spinal cord in axolotls

Reference

Fabian Rost, Aida Rodrigo Albors, Vladimir Mazurov, Lutz Brusch, Andreas Deutsch, Elly M Tanaka, Osvaldo Chara, "Accelerated cell divisions drive the outgrowth of the regenerating spinal cord in axolotls" , In eLife (Bronner, Marianne) , eLife Sciences Publications, Ltd, vol. 5, pp. e20357, Nov 2016. [doi]

Abstract

Axolotls are unique in their ability to regenerate the spinal cord. However, the mechanisms that underlie this phenomenon remain poorly understood. Previously, we showed that regenerating stem cells in the axolotl spinal cord revert to a molecular state resembling embryonic neuroepithelial cells and functionally acquire rapid proliferative divisions (Rodrigo Albors et al., 2015). Here, we refine the analysis of cell proliferation in space and time and identify a high-proliferation zone in the regenerating spinal cord that shifts posteriorly over time. By tracking sparsely-labeled cells, we also quantify cell influx into the regenerate. Taking a mathematical modeling approach, we integrate these quantitative datasets of cell proliferation, neural stem cell activation and cell influx, to predict regenerative tissue outgrowth. Our model shows that while cell influx and neural stem cell activation play a minor role, the acceleration of the cell cycle is the major driver of regenerative spinal cord outgrowth in axolotls.

Bibtex

@article {10.7554/eLife.20357,
article_type = {journal},
title = {Accelerated cell divisions drive the outgrowth of the regenerating spinal cord in axolotls},
author = {Rost, Fabian and Rodrigo Albors, Aida and Mazurov, Vladimir and Brusch, Lutz and Deutsch, Andreas and Tanaka, Elly M and Chara, Osvaldo},
editor = {Bronner, Marianne},
volume = 5,
year = 2016,
month = {nov},
pub_date = {2016-11-25},
pages = {e20357},
citation = {eLife 2016;5:e20357},
doi = {10.7554/eLife.20357},
url = {https://doi.org/10.7554/eLife.20357},
abstract = {Axolotls are unique in their ability to regenerate the spinal cord. However, the mechanisms that underlie this phenomenon remain poorly understood. Previously, we showed that regenerating stem cells in the axolotl spinal cord revert to a molecular state resembling embryonic neuroepithelial cells and functionally acquire rapid proliferative divisions (Rodrigo Albors et al., 2015). Here, we refine the analysis of cell proliferation in space and time and identify a high-proliferation zone in the regenerating spinal cord that shifts posteriorly over time. By tracking sparsely-labeled cells, we also quantify cell influx into the regenerate. Taking a mathematical modeling approach, we integrate these quantitative datasets of cell proliferation, neural stem cell activation and cell influx, to predict regenerative tissue outgrowth. Our model shows that while cell influx and neural stem cell activation play a minor role, the acceleration of the cell cycle is the major driver of regenerative spinal cord outgrowth in axolotls.},
keywords = {regeneration, modeling, cell proliferation, axolotl},
journal = {eLife},
issn = {2050-084X},
publisher = {eLife Sciences Publications, Ltd},
}

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