慢性鼻窦炎伴鼻息肉中15-羟基前列腺素脱氢酶的表达及其调控机制研究  

Altered expression of 15-hydroxyprostaglandin dehydrogenase in chronic rhinosinusitis with nasal polyps

作　　者：陈删 陈敬彩 陈建军[1] 王彦君[1] CHEN Shan;CHEN Jingcai;CHEN Jianjun;WANG Yanjun(Department of Otolaryngology Head and Neck Surgery,Affiliated Union Hospital of Tongji Medical College,Huazhong University of Science and Technology,Wuhan,430022,China;Department of Otolaryngology,First Affiliated Hospital of Shihezi University School of Medicine)

机构地区：[1]华中科技大学同济医学院附属协和医院耳鼻咽喉头颈外科,武汉430022 [2]石河子大学医学院第一附属医院耳鼻咽喉科

出　　处：《临床耳鼻咽喉头颈外科杂志》2023年第11期891-896,共6页Journal of Clinical Otorhinolaryngology Head And Neck Surgery

基　　金：国家重点研发计划(No:2022YFC2504100)。

摘　　要：目的:研究伴鼻息肉的慢性鼻窦炎(chronic rhinosinusitis with nasalpolyps,CRSwNP)患者鼻息肉中15-羟基前列腺素脱氢酶(15-hydroxyprostaglandin dehydrogenase,HPGD)的表达水平及其调控机制。方法:应用免疫荧光观察鼻息肉组织中HPGD表达的细胞类型,应用Western-Blot对鼻息肉组织中HPGD表达进行半定量分析。观察人源重组高迁移率家族蛋白1(highmobility group box-1,HMGB1)对人原代鼻黏膜上皮细胞中HPGD表达的作用,并利用晚期糖基化终末产物受体(receptor for advancedglycation end products,RAGE)中和抗体观察能否阻断HMGB1对HPGD的诱导作用。结果:各型CRSwNP患者中的HPGD表达水平增高,且定位于CD68阳性细胞及上皮细胞。人源重组HMGB1可刺激人原代鼻黏膜上皮细胞中HPGD表达增高,且呈时间依赖性,同时在12h可观察到MEK的磷酸化水平增高及RAGE表达增高,但在24hMEK磷酸化水平及RAGE表达趋于正常。利用RAGE中和抗体可部分阻断人源重组HMGB1对人原代鼻黏膜上皮细胞中HPGD的诱导作用。结论:CRSwNP中HPGD表达增高,且主要定位于巨噬细胞及上皮细胞。HMGB1通过RAGE-MEK信号通路调控HPGD表达,这可能为今后调控CRSwNP中PGE2水平提供了一个新的靶点。Objective:To investigate the expression level and regulatory mechanism of 15-hydroxyprostaglandin dehydrogenase(HPGD)in chronic rhinosinusitis with nasal polyps(CRSwNP).Methods:The expression pattern and level of HPGD in CRSwNP and control was observed using immunofluorescence,and western blot was used for analysis of HPGD expression in nasal polyp tissues.The effect of recombinant human high mobility group box-1(HMGB1)on HPGD expression in primary human nasal epithelial cells was observed,and the potential blocking effect of RAGE neutralizing antibody on HMGB1-induced HPGD expression was investigated.Results:The expression of HPGD was elevated in CRSwNP patients compared to the control,while the protein mainly localized at CD68-positive cells and epithelial cells.Recombinant human HMGB1 stimulated an increase in HPGD expression in primary human nasal mucosal epithelial cells at a time-dependent manner.Additionally,increased phosphorylation levels of MEK and elevated RAGE expression were also observed at 12 hours,but decreased at 24 hours after the incubation of HMGB1.The increase in the expression of HPGD induced by HMGB1 in primary human nasal epithelial cells was partly inhibited with RAGE neutralizing antibody.Conclusion:Elevated HPGD expression is observed in CRSwNP,predominantly in macrophages and epithelial cells.HMGB1 regulates HPGD expression through the RAGE-MEK signaling pathway,potentially providing a new target for future regulation of PGE_2levels in CRSwNP.

关 键 词：慢性鼻窦炎伴鼻息肉 15-羟基前列腺素脱氢酶 高迁移率族蛋白1 

分 类 号：R765.04[医药卫生—耳鼻咽喉科]