Drosophila Insulin receptor regulates the persistence of injury-induced nociceptive sensitization.
Drosophila Insulin receptor regulates the persistence of injury-induced nociceptive sensitization.
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DOI：
10.1242/dmm.034231
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发表时间：
2018-05-10
影响因子：
4.3
通讯作者：
Galko MJ
中科院分区：
文献类型：
--
作者：
Im SH;Patel AA;Cox DN;Galko MJ
Diabetes-associated nociceptive hypersensitivity affects diabetic patients with hard-to-treat chronic pain. Because multiple tissues are affected by systemic alterations in insulin signaling, the functional locus of insulin signaling in diabetes-associated hypersensitivity remains obscure. Here, we used Drosophila nociception/nociceptive sensitization assays to investigate the role of Insulin receptor (Insulin-like receptor, InR) in nociceptive hypersensitivity. InR mutant larvae exhibited mostly normal baseline thermal nociception (absence of injury) and normal acute thermal hypersensitivity following UV-induced injury. However, their acute thermal hypersensitivity persists and fails to return to baseline, unlike in controls. Remarkably, injury-induced persistent hypersensitivity is also observed in larvae that exhibit either type 1 or type 2 diabetes. Cell type-specific genetic analysis indicates that InR function is required in multidendritic sensory neurons including nociceptive class IV neurons. In these same nociceptive sensory neurons, only modest changes in dendritic morphology were observed in the InRRNAi-expressing and diabetic larvae. At the cellular level, InR-deficient nociceptive sensory neurons show elevated calcium responses after injury. Sensory neuron-specific expression of InR rescues the persistent thermal hypersensitivity of InR mutants and constitutive activation of InR in sensory neurons ameliorates the hypersensitivity observed with a type 2-like diabetic state. Our results suggest that a sensory neuron-specific function of InR regulates the persistence of injury-associated hypersensitivity. It is likely that this new system will be an informative genetically tractable model of diabetes-associated hypersensitivity. Summary: Drosophila insulin signaling is required within nociceptive sensory neurons to regulate the persistence of thermal pain sensitization. We describe a model that could be useful to dissect diabetes-induced pain syndromes.
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影响因子：
9.8
作者：
Augustin H;McGourty K;Allen MJ;Madem SK;Adcott J;Kerr F;Wong CT;Vincent A;Godenschwege T;Boucrot E;Partridge L
通讯作者：
Partridge L
影响因子：
7.1
作者：
Grote CW;Groover AL;Ryals JM;Geiger PC;Feldman EL;Wright DE
通讯作者：
Wright DE
影响因子：
7.7
作者：
Brussee, V;Cunningham, FA;Zochodne, DW
通讯作者：
Zochodne, DW
影响因子：
9.2
作者：
Babcock, Daniel T.;Shi, Shanping;Jo, Juyeon;Shaw, Michael;Gutstein, Howard B.;Galko, Michael J.
通讯作者：
Galko, Michael J.
影响因子：
4.3
作者：
Grote CW;Wright DE
通讯作者：
Wright DE