Previously, we showed that activation of the spinal CXCL9, 10/CXCR3 pathway mediated bone cancer pain (BCP) in rats. However, the cellular mechanism involved is poorly understood. Here, we found that the activated CXCR3 was co-localized with either neurons, microglia, and astrocytes in the spinal cord, or non-peptidergic-, peptidergic-, and A-type neurons in the dorsal root ganglion. The inoculation of Walker-256 mammary gland carcinoma cells into the rat's tibia induced a time-dependent phosphorylation of Akt and extracellular signal-regulated kinase (ERK1/2) in the spinal cord, and CXCR3 was necessary for the phosphorylation of Akt and ERK 1/2. Meanwhile, CXCR3 was co-localized with either pAkt or pERK1/2. Blockage of either Akt or ERK1/2 prevented or reversed the mechanical allodynia in BCP rats. Furthermore, there was cross-activation between PI3K/Akt and Raf/MEK/ERK pathway under the BCP condition. Our results demonstrated that the activation of spinal chemokine receptor CXCR3 mediated BCP through Akt and ERK 1/2 kinase, and also indicated a crosstalk between PI3K/Alct and Raf/MEK/ERK signaling pathways under the BCP condition. Crown Copyright (C) 2014 Published by Elsevier Inc. All rights reserved.
基金:
National Natural Science Foundation of China [81371250, 81460176, 81100832, 81400917]
第一作者单位:[1]Huazhong Univ Sci & Technol, Tongji Med Coll, Tongji Hosp, Dept Anesthesiol & Pain Med, 1095 Jiefang Rd, Wuhan 430030, Peoples R China
通讯作者:
推荐引用方式(GB/T 7714):
Guan Xue-Hai,Fu Qiao-Chu,Shi Dai,et al.Activation of spinal chemokine receptor CXCR3 mediates bone cancer pain through an Akt-ERK crosstalk pathway in rats[J].EXPERIMENTAL NEUROLOGY.2015,263:39-49.doi:10.1016/j.expneurol.2014.09.019.
APA:
Guan, Xue-Hai,Fu, Qiao-Chu,Shi, Dai,Bu, Hui-Lian,Song, Zhen-Peng...&Tian, Yu-Ke.(2015).Activation of spinal chemokine receptor CXCR3 mediates bone cancer pain through an Akt-ERK crosstalk pathway in rats.EXPERIMENTAL NEUROLOGY,263,
MLA:
Guan, Xue-Hai,et al."Activation of spinal chemokine receptor CXCR3 mediates bone cancer pain through an Akt-ERK crosstalk pathway in rats".EXPERIMENTAL NEUROLOGY 263.(2015):39-49