Title |
Discovery of a selective NaV1.7 inhibitor from centipede venom with analgesic efficacy exceeding morphine in rodent pain models
|
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Published in |
Proceedings of the National Academy of Sciences of the United States of America, September 2013
|
DOI | 10.1073/pnas.1306285110 |
Pubmed ID | |
Authors |
Shilong Yang, Yao Xiao, Di Kang, Jie Liu, Yuan Li, Eivind A. B. Undheim, Julie K. Klint, Mingqiang Rong, Ren Lai, Glenn F. King |
Abstract |
Loss-of-function mutations in the human voltage-gated sodium channel NaV1.7 result in a congenital indifference to pain. Selective inhibitors of NaV1.7 are therefore likely to be powerful analgesics for treating a broad range of pain conditions. Herein we describe the identification of µ-SLPTX-Ssm6a, a unique 46-residue peptide from centipede venom that potently inhibits NaV1.7 with an IC50 of ∼25 nM. µ-SLPTX-Ssm6a has more than 150-fold selectivity for NaV1.7 over all other human NaV subtypes, with the exception of NaV1.2, for which the selectivity is 32-fold. µ-SLPTX-Ssm6a contains three disulfide bonds with a unique connectivity pattern, and it has no significant sequence homology with any previously characterized peptide or protein. µ-SLPTX-Ssm6a proved to be a more potent analgesic than morphine in a rodent model of chemical-induced pain, and it was equipotent with morphine in rodent models of thermal and acid-induced pain. This study establishes µ-SPTX-Ssm6a as a promising lead molecule for the development of novel analgesics targeting NaV1.7, which might be suitable for treating a wide range of human pain pathologies. |
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Australia | 3 | 7% |
United Kingdom | 3 | 7% |
Japan | 2 | 5% |
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Bolivia, Plurinational State of | 1 | 2% |
Switzerland | 1 | 2% |
Brazil | 1 | 2% |
Unknown | 21 | 50% |
Demographic breakdown
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Scientists | 7 | 17% |
Practitioners (doctors, other healthcare professionals) | 2 | 5% |
Science communicators (journalists, bloggers, editors) | 1 | 2% |
Mendeley readers
Geographical breakdown
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United States | 2 | <1% |
Portugal | 1 | <1% |
Canada | 1 | <1% |
Switzerland | 1 | <1% |
Belgium | 1 | <1% |
Argentina | 1 | <1% |
Unknown | 208 | 96% |
Demographic breakdown
Readers by professional status | Count | As % |
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Researcher | 45 | 21% |
Student > Ph. D. Student | 41 | 19% |
Student > Bachelor | 27 | 12% |
Student > Master | 26 | 12% |
Other | 13 | 6% |
Other | 39 | 18% |
Unknown | 26 | 12% |
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Medicine and Dentistry | 35 | 16% |
Biochemistry, Genetics and Molecular Biology | 20 | 9% |
Chemistry | 20 | 9% |
Pharmacology, Toxicology and Pharmaceutical Science | 15 | 7% |
Other | 21 | 10% |
Unknown | 31 | 14% |