TrpA1 regulates thermal nociception in Drosophila.

TrpA1 regulates thermal nociception in Drosophila.
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DOI:
10.1371/journal.pone.0024343
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发表时间:
2011
期刊:
影响因子:
3.7
通讯作者:
Penninger JM
Penninger JM
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Neely GG;Keene AC;Duchek P;Chang EC;Wang QP;Aksoy YA;Rosenzweig M;Costigan M;Woolf CJ;Garrity PA;Penninger JM

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Pain is a significant medical concern and represents a major unmet clinical need. The ability to perceive and react to tissue-damaging stimuli is essential in order to maintain bodily integrity in the face of environmental danger. To prevent damage the systems that detect noxious stimuli are therefore under strict evolutionary pressure. We developed a high-throughput behavioral method to identify genes contributing to thermal nociception in the fruit fly and have reported a large-scale screen that identified the Ca2+ channel straightjacket (stj) as a conserved regulator of thermal nociception. Here we present the minimal anatomical and neuronal requirements for Drosophila to avoid noxious heat in our novel behavioral paradigm. Bioinformatics analysis of our whole genome data set revealed 23 genes implicated in Ca2+ signaling that are required for noxious heat avoidance. One of these genes, the conserved thermoreceptor TrpA1, was confirmed as a bona fide “pain” gene in both adult and larval fly nociception paradigms. The nociceptive function of TrpA1 required expression within the Drosophila nervous system, specifically within nociceptive multi-dendritic (MD) sensory neurons. Therefore, our analysis identifies the channel TRPA1 as a conserved regulator of nociception.
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