HSV-mediated expression of interleukin-4 in dorsal root ganglion neurons reduces neuropathic pain.

HSV-mediated expression of interleukin-4 in dorsal root ganglion neurons reduces neuropathic pain.
复制标题

HSV介导的白介素4在背根神经神经元中的表达减轻了神经性疼痛。

DOI:
10.1186/1744-8069-2-6
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发表时间:
2006-02-17
期刊:
影响因子:
3.3
通讯作者:
Fink DJ
Fink DJ
中科院分区:
医学3区
文献类型:
--
作者:
Hao S;Mata M;Glorioso JC;Fink DJ

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为了研究炎症介质在神经性疼痛中的作用,我们使用了复制缺陷型基因组单纯疱疹病毒(HSV)为基础的载体,其中含有编码序列的抗炎肽白细胞介素(IL)-4下的HSV ICP 4立即早期启动子的转录控制,载体S4 IL 4,表达IL-4在背根神经节(DRG)神经元在体内。在足转导的腰DRG中皮下接种S4 IL 4以产生IL-4。在正常动物中,转基因介导的IL-4表达并不改变热潜伏期或触觉阈值,但在脊神经结扎(SNL)后1周接种S4 IL 4可减少机械性异常性疼痛并逆转SNL引起的热痛觉过敏。SNL前1周接种S4 IL 4可延迟热痛觉过敏和触觉异常性疼痛的发生,但不能阻止这些神经病理性疼痛表现的最终发生。S4 IL 4可抑制脊髓背角c-Fos免疫反应性的表达,并逆转脊髓IL-1β、PGE 2和磷酸化p38 MAP激酶的上调,这是神经病理性疼痛的特征。HSV介导的IL-4表达有效地减少了神经性疼痛的行为表现,并在脊髓水平逆转了神经性疼痛的一些生物化学和组织学相关性。
To examine the role of inflammatory mediators in neuropathic pain, we used a replication-defective genomic herpes simplex virus (HSV)-based vector containing the coding sequence for the anti-inflammatory peptide interleukin (IL)-4 under the transcriptional control of the HSV ICP4 immediate early promoter, vector S4IL4, to express IL-4 in dorsal root ganglion (DRG) neurons in vivo. Subcutaneous inoculation of S4IL4 in the foot transduced lumbar DRG to produce IL-4. Transgene-mediated expression of IL-4 did not alter thermal latency or tactile threshold in normal animals, but inoculation of S4IL4 1 week after spinal nerve ligation (SNL) reduced mechanical allodynia and reversed thermal hyperalgesia resulting from SNL. Inoculation of S4IL4 1 week before SNL delayed the development of thermal hyperalgesia and tactile allodynia, but did not prevent the ultimate development of these manifestations of neuropathic pain. S4IL4 inoculation suppressed non-noxious-induced expression of c-Fos immunoreactivity in dorsal horn of spinal cord and reversed the upregulation of spinal IL-1β, PGE2, and phosphorylated-p38 MAP kinase, characteristic of neuropathic pain. HSV-mediated expression of IL-4 effectively reduces the behavioral manifestations of neuropathic pain, and reverses some of the biochemical and histologic correlates of neuropathic pain at the spinal level.
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