Journal
NATURE BIOTECHNOLOGY
Volume 29, Issue 4, Pages 352-U181Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nbt.1764
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Funding
- Howard Hughes Medical Institute
- Burrough-Wellcome Fund
- National Institutes of Health (NIH) [5K08EB008122, NS27177]
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Nerve preservation is an important goal during surgery because accidental transection or injury leads to significant morbidity, including numbness, pain, weakness or paralysis. Nerves are usually identified by their appearance and relationship to nearby structures or detected by local electrical stimulation (electromyography), but thin or buried nerves are sometimes overlooked. Here, we use phage display to select a peptide that binds preferentially to nerves. After systemic injection of a fluorescently labeled version of the peptide in mice, all peripheral nerves are clearly delineated within 2 h. Contrast between nerve and adjacent tissue is up to tenfold, and useful contrast lasts up to 8 h. No changes in behavior or activity are observed after treatment, indicating a lack of obvious toxicity. The fluorescent probe also labels nerves in human tissue samples. Fluorescence highlighting is independent of axonal integrity, suggesting that the probe could facilitate surgical repair of injured nerves and help prevent accidental transection.
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