JOM KITA KE POLITEKNIK

Two-photon cell and tissue level laser ablation methods to study morphogenetic biomechanics (Record no. 2387)

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Personal name Marshall, Abigail R
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9 (RLIN) 2961
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Title Two-photon cell and tissue level laser ablation methods to study morphogenetic biomechanics
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Date of publication, distribution, etc. 2022-01-01.
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General note /pmc/articles/PMC7614166/
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General note /pubmed/35147945
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Summary, etc. Laser ablation is routinely performed to infer mechanical tension in cells and tissues. Here we describe our method of two-photon laser ablation at the cellular and tissue level in mouse embryos. The primary outcome of these experiments is initial retraction following ablation, which correlates with, and so can be taken as a measure of, the tensile stress that structure was under before ablation. Several experimental variables can affect interpretation of ablation tests. Pre-test factors include differences in physical properties such as viscoelasticity between experimental conditions. Factors relevant during the test include viability of the cells at the point of ablation, image acquisition rate and the potential for over-zealous ablations to cause air bubbles through heat dissipation. Post-test factors include intensity-biased image registration that can artificially produce apparent directionality. Applied to the closing portion of the mouse spinal neural tube, these methods have demonstrated long-range biomechanical coupling of the embryonic structure and have identified highly contractile cell populations involved in its closure process.
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Language note en
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Personal name Maniou, Eirini
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9 (RLIN) 2962
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Personal name Moulding, Dale
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9 (RLIN) 2963
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Personal name Greene, Nicholas DE
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9 (RLIN) 2964
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Personal name Copp, Andrew J
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Personal name Galea, Gabriel L
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Note Methods Mol Biol
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Uniform Resource Identifier <a href="http://dx.doi.org/10.1007/978-1-0716-2035-9_14">http://dx.doi.org/10.1007/978-1-0716-2035-9_14</a>
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