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Garza Carbajal A, Ebersberger A, Thiel A, Ferrari L, Acuna J, Brosig S, Isensee J, Moeller K, Siobal M, Rose-John S, Levine J, Schaible HG, Hucho T. Oncostatin M induces hyperalgesic priming and amplifies signaling of cAMP to ERK by RapGEF2 and PKA. J Neurochem 2020; 157:1821-1837. [PMID: 32885411 DOI: 10.1111/jnc.15172] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 08/19/2020] [Accepted: 08/20/2020] [Indexed: 12/19/2022]
Abstract
Hyperalgesic priming is characterized by enhanced nociceptor sensitization by pronociceptive mediators, prototypically PGE2 . Priming has gained interest as a mechanism underlying the transition to chronic pain. Which stimuli induce priming and what cellular mechanisms are employed remains incompletely understood. In adult male rats, we present the cytokine Oncostatin M (OSM), a member of the IL-6 family, as an inducer of priming by a novel mechanism. We used a high content microscopy based approach to quantify the activation of endogenous PKA-II and ERK of thousands sensory neurons in culture. Incubation with OSM increased and prolonged ERK activation by agents that increase cAMP production such as PGE2 , forskolin, and cAMP analogs. These changes were specific to IB4/CaMKIIα positive neurons, required protein translation, and increased cAMP-to-ERK signaling. In both, control and OSM-treated neurons, cAMP/ERK signaling involved RapGEF2 and PKA but not Epac. Similar enhancement of cAMP-to-ERK signaling could be induced by GDNF, which acts mostly on IB4/CaMKIIα-positive neurons, but not by NGF, which acts mostly on IB4/CaMKIIα-negative neurons. In vitro, OSM pretreatment rendered baseline TTX-R currents ERK-dependent and switched forskolin-increased currents from partial to full ERK-dependence in small/medium sized neurons. In summary, priming induced by OSM uses a novel mechanism to enhance and prolong coupling of cAMP/PKA to ERK1/2 signaling without changing the overall pathway structure.
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Affiliation(s)
- Anibal Garza Carbajal
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | | | - Alina Thiel
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | - Luiz Ferrari
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Jeremy Acuna
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | - Stephanie Brosig
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | - Joerg Isensee
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | - Katharina Moeller
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | - Maike Siobal
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
| | | | - Jon Levine
- Department of Oral and Maxillofacial Surgery, University of California San Francisco, San Francisco, CA, USA
| | | | - Tim Hucho
- Department of Anaesthesiology and Intensive Care Medicine, Translational Pain Research, University Hospital Cologne, University Cologne, Cologne, Germany
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