江西医药2022年11月第57卷第11期JiangxiMedicalJournal,November2022,Vol57,No11摘要:目的探讨NLRC3(NLRfamilyCARDdomaincontaining3)低表达后对人肺正常上皮细胞株BEAS-2b侵袭和迁移的影响及其机制。方法采用Lipofectamin2000转染试剂将NLRC3基因的小干扰片段siNLRC3转染至BEAS-2b细胞;荧光定量PCR检测干扰片段siNLRC3的干扰效率;Transwell迁移实验和Matrigel侵袭实验检测NLRC3低表达后BEAS-2b细胞迁移和侵袭能力的变化;WesternBlot检测NLRC3低表达后基质金属蛋白酶-2(MMP-2)、基质金属蛋白酶-9(MMP-9)、钙粘蛋白E-cadherin表达的影响。结果荧光定量PCR实验结果表明siNLRC3干扰效率为77%。Transwell迁移实验和Matrigel侵袭实验结果表明NLRC3低表达后BEAS-2b细胞迁移和侵袭能力增加(P<0.05)。Westernblot结果显示NLRC3低表达后BEAS-2b细胞中MMP-2、MMP-9蛋白表达水平上调,E-cadherin蛋白表达水平明显下降(P<0.01)。结论NLRC3基因低表达后可能通过降低E-cadherin蛋白表达以及促进MMP-2、MMP-9蛋白表达来增强BEAS-2b细胞的侵袭和转移能力。关键词:NLRC3;BEAS-2b;侵袭;迁移中图分类号:R734.2文献标识码:B文章编号:1006-2238(2022)11-1718-05DOI:10.3969/j.issn.1006-2238.2022.11.003TheEffectoflowexpressionofNLRC3oninvasionandmigrationofhumanlungnormalepithelialcellsBEAS-2bLIJie,LIULing,HUANGYouxing,LUHongfei,LUOYaolingAbstract:ObjectiveToinvestigatetheeffectandmechanismoflowexpressionofNLRC3(NLRfamilycarddomaincontain-ing3)oninvasionandmigrationofhumannormallungepithelialcelllineBEAS-2b.MethodsThesmallinterferingRNAoftheNLRC3gene(siNLRC3)wastransfectedintoBEAS-2bcellsusingLipofectamin2000transfectionreagent.Theinterferenceeffi-ciencyofsiNLRC3wasdetectedbyRT-qPCR.ThemigrationandinvasionofBEAS-2bcellsafterlowexpressionofNLRC3wasdetectedbyTranswell.WesternBlotwasusedtodetecttheexpressionofmatrixmetalloproteinase-2,matrixmetalloproteinase-9(MMP-2,MMP-9)andE-cadherinaftertheexpressionofNLRC3wasdecreased.ResultsTheresultsofRT-qPCRshowedthattheinterferenceefficiencyofsiNLRC3was77%.TranswellassayshowedthatthemigrationandinvasionabilityofBEAS-2bcellsincreasedafterlowexpressionofNLRC3(P<0.05).WesternblotanalysisshowedthattheexpressionofMMP...