25-OH维生素D通过调控TGF-β介导的YAP/TAZ核转位机制对新生儿感染性肺炎的抗炎作用研究  

Anti-inflammatory Effect of 25-OH Vitamin D in Neonatal Infectious Pneumonia by Modulating the TGF-β-mediated YAP/TAZ Nuclear Translocation

作　　者：刘阳 石芸 钟林平 秦膏阳 LIU Yang;SHI Yun;ZHONG Linping;QIN Gaoyang(Department of Neonatology,School of Medicine,University of Electronic Science and Technology of China/Chengdu Women and Children’s Center Hospital,Chengdu 611731,China)

机构地区：[1]电子科技大学医学院附属妇女儿童医院、成都市妇女儿童中心医院新生儿科,成都611731

出　　处：《现代检验医学杂志》2024年第4期28-33,39,共7页Journal of Modern Laboratory Medicine

基　　金：四川省科技计划项目(编号:19RKX0835)。

摘　　要：目的探讨25-OH维生素D(25-OH vitamin D,25-OH-VD)对新生儿感染性肺炎(neonatal infectious pneumonia,NIP)的抗炎作用及其作用机制。方法选取2022年1月~2023年1月成都市妇女儿童中心医院收治的65例NIP患儿,根据病情严重程度,分为轻症组(n=34)和重症组(n=31),另选取同期60例健康新生儿为对照组。通过酶联免疫吸附试验(ELISA)检测血清25-OH-VD,白细胞介素-2(inteleukin-2,IL-2)、γ干扰素(interferon-γ,IFN-γ)、肿瘤坏死因子α(tumor necrosis factor-α,TNF-α)和IL-1β水平;蛋白免疫印迹法检测外周血单个核细胞中维生素D受体(vitamin D receptor,VDR)、细胞核转化生长因子β(transforming growth factorβ,TGF-β)/Yes相关蛋白(nucleus-Yes-associated protein,n-YAP)和细胞核转录共激活因子PDZ结合基序(nucleus-transcriptional coactivator with PDZ-binding motif,n-TAZ)通路相关蛋白表达。脂多糖(lipopolysaccharide,LPS)刺激人肺上皮细胞构建NIP体外模型,分为Control组、LPS组和LPS+VD组;CCK-8检测细胞活力;qRT-PCR检测各组细胞中细胞色素P450家族成员28B1(recombinant cytochrome P45027B1,CYP27B1)和VDR的mRNA表达;免疫细胞化学法检测各组细胞YAP阳性细胞核数;免疫荧光检测各组细胞YAP/TAZ复合物核转位;蛋白免疫印迹法检测各组细胞炎性因子相关蛋白表达。结果与对照组相比,轻症组和重症组患儿血清中IL-2(1.91±0.18μg/L,2.63±0.27μg/L vs 1.05±0.12μg/L),IFN-γ(1.73±0.13μg/L,2.18±0.19μg/L vs 1.03±0.07μg/L),TNF-α(1.79±0.08μg/L,2.38±0.13μg/L vs 0.97±0.04μg/L)和IL-1β(2.18±0.07μg/L,2.59±0.11μg/L vs 0.96±0.02μg/L)含量以及TGF-β(1.67±0.21,2.43±0.42 vs 1.02±0.04),n-YAP(2.08±0.11,4.23±0.37 vs 0.99±0.02)和n-TAZ(2.47±0.42,4.21±0.58 vs 1.03±0.05)蛋白表达逐渐升高,25-OH-VD(12.57±2.21μg/L,7.85±2.03μg/L vs 16.76±1.02μg/L)含量和VDR(0.73±0.09,0.51±0.06 vs 1.03±0.08)蛋白表达逐渐降低,差异具有统计学意义(F=18.983~56.782,均P<0.001)。细胞实验结果显Objective To investigate the anti-inflammatory effect of 25-OH vitamin D(25-OH-VD)on neonatal infectious pneumonia(NIP)and its mechanism.Methods A total of 65 children with NIP admitted to Chengdu Women and Children’s Central Hospital from January 2022 to January 2023 were selected.According to the severity of the disease,they were divided into mild group(n=34)and severe group(n=31),and 60 healthy neonates in the same period were selected as the control group.Serum 25-OH-VD,interleukin-2(IL-2),interferon-γ(IFN-γ),tumor necrosis factor-α(TNF-α)and IL-1βlevels were measured by ELISA.The expressions of vitamin D receptor(VDR),transforming growth factor-β(TGF-β)/nuolea Yesassociated protein(n-YAP)and nuclear transcriptional coactivator PDZ-binding motif(n-TAZ)pathway related proteins in peripheral blood mononuclear cells were detected by Western blot.NIP in vitro models were established by lipopolysaccharide(LPS)stimulation of human lung epithelial cells,which were divided into control group,LPS group and LPS+VD group.Cell viability was detected by CCK-8 assay.The mRNA expressions of recombinant cytochrome P45027B1(CYP27B1)and VDR in each group were detected by qRT-PCR.The number of YAP positive nuclei in each group was detected by immunocytochemistry.The nuclear translocation of YAP/TAZ complex in each group was detected by immunofluorescence.The expression of inflammatory factor-related proteins in each group was detected by Western blot.Results Compared with the control group,the serum levels of IL-2(1.91±0.18μg/L,2.63±0.27μg/L vs 1.05±0.12μg/L),IFN-γ(1.73±0.13μg/L,2.18±0.19μg/L vs 1.03±0.07μg/L),TNF-α(1.79±0.08μg/L,2.38±0.13μg/L vs 0.97±0.04μg/L),IL-1β(2.18±0.07μg/L,2.59±0.11μg/L vs 0.96±0.02μg/L),TGF-β(1.67±0.21,2.43±0.42 vs 1.02±0.04),n-YAP(2.08±0.11,4.23±0.37 vs 0.99±0.02)and n-TAZ(2.47±0.42,4.21±0.58 vs 1.03±0.05)proteins of the children in the mild and severe groups were gradually increased,but the content of 25-OH-VD(12.57±2.21μg/L,7.85±2.03μg/L vs 16.76±1.

关 键 词：新生儿感染性肺炎 25-OH维生素D 转化生长因子Β Yes相关蛋白/细胞核转录共激活因子PDZ结合基序核转位 

分 类 号：R722.135[医药卫生—儿科] R392.11[医药卫生—临床医学]