Journal
CELL REPORTS
Volume 37, Issue 12, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.celrep.2021.110152
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Funding
- Emmy Noether-Program of the Deutsche Forschungsgemeinschaft (DFG) [SCHM 2533/2-1]
- DFG Collaborative Research Center 889
- Max Planck Society
- University of Vienna
- GGNB PhD fellowship
- German Pain Society (DGSS) - Astellas Pharma GmbH (Germany)
- Mundipharma GmbH
- Grunenthal GmbH
- MSD Sharp DOHME GmbH
- Mundipharma International
- JanssenCilag GmbH
- Fresenius Kabi Novartis
- AcelRx
- Ministry for Science and Culture of Lower Saxony
- Volkswagen Foundation [762-12-9/19 (ZN3457)]
- DFG [PO1319/3-1]
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Tmem160 plays a significant role in the establishment of nerve injury-induced pain behaviors in male mice, but is dispensable for other pain modalities and entities. The findings reveal Tmem160 as a sexually dimorphic factor in the development of specific nerve-induced pain behaviors.
Chronic pain is a prevalent medical problem, and its molecular basis remains poorly understood. Here, we demonstrate the significance of the transmembrane protein (Tmem) 160 for nerve injury-induced neuropathic pain. An extensive behavioral assessment suggests a pain modality-and entity-specific phenotype in male Tmem160 global knockout (KO) mice: delayed establishment of tactile hypersensitivity and alterations in self grooming after nerve injury. In contrast, Tmem160 seems to be dispensable for other nerve injury-induced pain modalities, such as non-evoked and movement-evoked pain, and for other pain entities. Mechanistically, we show that global KO males exhibit dampened neuroimmune signaling and diminished TRPA1-mediated activity in cultured dorsal root ganglia. Neither these changes nor altered pain-related behaviors are observed in global KO female and male peripheral sensory neuron-specific KO mice. Our findings reveal Tmem160 as a sexually dimorphic factor contributing to the establishment, but not maintenance, of discrete nerve-induced pain behaviors in male mice.
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