Abstract
A thorough understanding of nerve regeneration in Caenorhabditis elegans requires performing femtosecond laser nanoaxotomy while minimally affecting the worm. We present a microfluidic device that fulfills such criteria and can easily be automated to enable high-throughput genetic and pharmacological screenings. Using the 'nanoaxotomy' chip, we discovered that axonal regeneration occurs much faster than previously described, and notably, the distal fragment of the severed axon regrows in the absence of anesthetics.
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Acknowledgements
We thank C. Bargmann and M. Goodman for valuable discussions. This work was supported by grants from the US National Institutes of Health (NS058646 and NS060129) and the National Science Foundation (BES-0548673).
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Authors and Affiliations
Contributions
N.C. and A.B. designed the device; T.C. fabricated the microfluidic chip; S.X.G. and N.D. performed two-photon microscopy; F.B., M.H. and A.B. analyzed data; S.X.G., F.B. and A.B. designed experiments; S.X.G. and F.B. performed experiments; F.B. and A.B. wrote the paper.
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Supplementary Text and Figures
Supplementary Figures 1–3, Supplementary Tables 1–2, Supplementary Methods (PDF 957 kb)
Supplementary Video 1
Immobilization of a worm in the microfluidic trap. (MOV 262 kb)
Supplementary Video 2
Laser nanoaxotomy of a worm on a chip. (MOV 2873 kb)
Supplementary Video 3
Behavioral assay of a worm following nanoaxotomy on the branches of all of its PLM and ALM processes. (MOV 350 kb)
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Guo, S., Bourgeois, F., Chokshi, T. et al. Femtosecond laser nanoaxotomy lab-on-a-chip for in vivo nerve regeneration studies. Nat Methods 5, 531–533 (2008). https://doi.org/10.1038/nmeth.1203
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DOI: https://doi.org/10.1038/nmeth.1203
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