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第42卷第6期       王红玉,顾     浩,葛 爱,等. 蛋白酶激活受体2经ROS信号调控支气管上皮间充质表型转化[J].
                  2022年6月                   南京医科大学学报(自然科学版),2022,42(06):790-795,829                     ·795 ·


                ROS水平、调控下游重要事件。上皮细胞ROS主要                               15(4):597-607
                源自线粒体,是上皮实现诸多功能的公认信号分子,                          [7] HEUBERGER D M,SCHUEPBACH R A. Protease⁃acti⁃
                对细胞存活、细胞增殖分化、迁移、血管生成等至关重                               vated receptors(PARs):mechanisms of action and poten⁃
                要 。然而,过量产生的ROS可致上皮功能障碍、引                               tial therapeutic modulators in PAR ⁃ driven inflammatory
                 [11]
                                                                       diseases[J]. Thromb J,2019,17:4
                起细胞氧化损伤,因此成为多种呼吸系统疾病如哮
                                                                 [8] CARROLL E L,BAILO M,REIHILL J A,et al. Trypsin⁃
                喘、肺纤维化、急性肺损伤的重要致病因子                 [24-26] 。
                                                                       like proteases and their role in muco⁃obstructive lung dis⁃
                    越来越多的证据显示,PAR2 活化可促进不同
                                                                       eases[J]. Int J Mol Sci,2021,22(11):5817
                类型细胞 ROS 产生。本研究围绕气道上皮表型与                         [9] BARDOU O,MENOU A,FRANÇOIS C,et al. Membrane⁃
                功能,发现 PAR2 经 ROS 信号、调控上皮 EMT 过程,                       anchored serine protease matriptase is a trigger of pulmo⁃
                可能为治疗多种慢性气道疾病如哮喘等提供新的                                  nary fibrogenesis[J]. Am J Respir Crit Care Med,2016,
                治疗策略。本研究结果表明:①类胰蛋白酶促进                                  193(8):847-860
                16HBE细胞表型向间充质转化,即诱导气道上皮发                         [10] ITOH Y,SENDO T,OISHI R. Physiology and pathophysi⁃
                生 EMT;②气道上皮 PAR2 活化可引起细胞 ROS 大                         ology of proteinase ⁃ activated receptors(PARs):role of
                量产生;③ROS 信号参与 PAR2 介导的 EMT 过程。                         tryptase/PAR ⁃ 2 in vascular endothelial barrier function
                                                                      [J]. J Pharmacol Sci,2005,97(1):14-19
                研究首次证实激活 PAR2 可诱发和加重上皮细胞
                                                                 [11] SIES H,JONES D P. Reactive oxygen species(ROS)as
                EMT,揭示ROS在PAR2介导EMT中的重要作用,为
                                                                       pleiotropic physiological signalling agents[J]. Nat Rev
                临床多种慢性气道疾病的防治提供了潜在靶点。
                                                                       Mol Cell Biol,2020,21(7):363-383
                然而作为胞内重要的信号分子,ROS 来源较广。本                         [12] PARK Y,LEE B,KIM D,et al. PAR2 deficiency induces
                研究揭示了 ROS 在类胰蛋白酶调控 EMT 过程中的                            mitochondrial ROS generation and dysfunctions,leading
                重要作用,但未进一步探讨类胰蛋白酶上调ROS的                                to the inhibition of adipocyte differentiation[J]. Oxid
                具体分子机制;同时16HBE作为转化的永生系气道                               Med Cell Longev,2021,2021:6683033
                上皮细胞,与气液交界培养的原代气道上皮细胞有                           [13] DONGRE A,WEINBERG R A. New insights into the
                所差异,因此有待进一步深入探索。                                       mechanisms of epithelial⁃mesenchymal transition and im⁃
                                                                       plications for cancer[J]. Nat Rev Mol Cell Biol,2019,20
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