1.上海中医药大学附属龙华医院内分泌科(上海 200032)
闵婕,女,博士,主治医师,主要从事中医药防治甲状腺疾病及糖尿病的临床与基础研究工作
李红,主任医师,教授,博士研究生导师; E-mail:shanhonli@126.com
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闵婕,李红.miR⁃155在亚急性甲状腺炎炎症进展中的调控作用研究[J].上海中医药杂志,2022,56(12):27-33.
MIN Jie,LI Hong.Regulatory effect of miR⁃155 on progress of the subacute thyroditis inflammatory response[J].Shanghai Journal of Traditional Chinese Medicine,2022,56(12):27-33.
闵婕,李红.miR⁃155在亚急性甲状腺炎炎症进展中的调控作用研究[J].上海中医药杂志,2022,56(12):27-33. DOI: 10.16305/j.1007-1334.2022.2112099.
MIN Jie,LI Hong.Regulatory effect of miR⁃155 on progress of the subacute thyroditis inflammatory response[J].Shanghai Journal of Traditional Chinese Medicine,2022,56(12):27-33. DOI: 10.16305/j.1007-1334.2022.2112099.
目的,2,研究miR⁃155对亚急性甲状腺炎(SAT)炎症进展的调控作用。,方法,2,收集SAT患者39例、同期健康体检者36例,分别设为SAT组、正常组,检测研究对象血清miR⁃155表达水平及细胞因子[白介素-2(IL-2)、白介素-6(IL-6)、白介素-10(IL-10)、肿瘤坏死因子-α(TNF-α)]含量,并对miR⁃155表达水平与炎症(白细胞计数、红细胞沉降率、超敏C反应蛋白)、甲状腺功能[甲状腺球蛋白(TG)、游离三碘甲腺原氨酸(FT,3,)、游离甲状腺素(FT,4,)、促甲状腺激素(TSH)]指标进行相关性分析。TNF-α(0、1、5、25 μg·L,-1,)诱导人甲状腺正常细胞(Nthy-ori 3-1),构建甲状腺细胞炎症模型,利用脂质体转染oligoRNA调控细胞内miR⁃155表达水平,荧光显微镜鉴定转染效率,PCR法检测miR⁃155及,IL,-,6、IL,-,8、IL,-,1β ,mRNA表达水平,ELISA法检测IL-6、IL-8、IL-1β释放水平。,结果,2,①SAT患者血清中miR⁃155水平及IL-6、TNF-α含量高于正常人群(,P,<,0.05)。②SAT患者血清中miR⁃155的表达水平与IL-6(,P,<,0.01,,r,=0.859)、TNF-α(,P,<,0.01,,r,=0.958)、FT,3,(,P,<,0.05,,r,=0.641)、FT,4,(,P,<,0.01,,r,=0.775)呈正相关。③TNF-α可以上调Nthy-ori 3-1的miR⁃155表达水平,诱导,IL,-,6,、,IL,-,8,、,IL,-,1β ,mRNA表达及释放,并存在浓度依赖趋势。④转染oligoRNA 6 h后,转染效率达到约90%;与阴性对照组相比,miR⁃155模拟物(mimics)(30 nmol·L,-1,)可以显著上调miR⁃155(,P,<,0.05),miR⁃155抑制物(inhibitor)(100 nmol·L,-1,)可以显著下调miR⁃155(,P,<,0.05)。⑤过表达miR⁃155后,,IL,-,1β,、,IL,-,6,及,IL,-,8,的mRNA表达及释放升高(,P,<,0.05);下调miR⁃155表达后,TNF-α诱导的,IL,-,1β,、,IL,-,6,及,IL,-,8,的mRNA表达及释放被抑制(,P,<,0.05)。,结论,2,miR⁃155在SAT中有促进炎症进展的作用,为中医药治疗SAT作用靶点研究提供了新的方向。
Objective,2,To investigate the regulatory effect of miR-155 on the progress of the subacute thyroditis (SAT) inflammatory response.,Methods,2,We collected 39 cases of subacute thyroiditis and 36 cases of normal control, detected circulating miR-155,expression level and the protein levels of inflammatory cytokines (IL-2, IL-6, IL-10, TNF-α) of subjects. Correlation analysis was carried out on the circulating miR-155 expression level of SAT patients with related inflammation indicators (WBC, ESR, CRP) and thyroid function indicators (TG, FT,3,, FT,4,, TSH). Nthy-ori 3-1 cells were induced by TNF-α with different concentrations (0, 1, 5, 25 μg·L,-1,) to establish a thyroid cell inflammation model, and the expression level of miR-155 was regulated by oligoRNA, which was transfected by lipofectamine 2000. Fluorescence microscope was used to identify transfection efficiency, qRT-PCR was performed to detect the expression of ,IL,-,6,, ,IL,-,8,, ,IL,-,1β, mRNA and miR-155, and ELISA was performed to detect protein levels of IL-6, IL-8, and IL-1β.,Results,2,①The expression levels of miR-155,,, IL-6 and TNF-α in SAT patients were significantly higher than those of healthy control participants (,P,<,0.05). ②The expression levels of miR-155 in serum were positively correlated with IL-6 (,P,<,0.01, ,r,=0.859), TNF-α (,P,<,0.01, ,r,=0.958), FT,3, (,P,<,0.05, ,r,=0.641) and FT,4, (,P,<,0.01, ,r,=0.775) in SAT patients. ③In Nthy-ori 3-1 cells, TNF-α could upregulate the expression level of miR-155, and induce the expression and release of ,IL,-,6,, ,IL-8, and ,IL,-,1β, mRNA, which had a concentration-dependent trend. ④The transfection efficiency reached about 90% after 6 hours of oligoRNA transfection. Compared with the condition in the negative control, miR-155 mimics (30 nmol·L,-1,) could significantly upregulate the expression level of miR-155 (,P,<,0.05), while miR-155 inhibitor (100 nmol·L,-1,) could significantly downregulate the expression level of miR-155 (,P,<,0.05). ⑤mRNA expression and release of IL-6, IL-8 and IL-1β showed a marked increase after overexpression of miR-155 (,P,<,0.05); On the other hand, TNF-α induced mRNA expression and release of IL-6, IL-8 and IL-1β were suppressed after suppression of miR-155 (,P,<,0.05).,Conclusions,2,miR-155,plays a role in promoting inflammation in the SAT, which provides a new direction for the target research of traditional Chinese medicine in treating SAT.
亚急性甲状腺炎miR⁃155微小核糖核酸人甲状腺正常细胞炎症
subacute thyroiditismiR-155miRNANthy-ori 3-1 cellinflammation
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