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首页> 外文期刊>Translational research: the journal of laboratory and clinical medicine >Gene expression profiles of cardiomyocytes in rat autoimmune myocarditis by DNA microarray and increase of regenerating gene family.
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Gene expression profiles of cardiomyocytes in rat autoimmune myocarditis by DNA microarray and increase of regenerating gene family.

机译:DNA芯片检测大鼠自身免疫性心肌炎心肌细胞的基因表达谱及再生基因家族的增加

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Cardiomyocytes with myocarditis compared with the normal state are thought to change the expressions of various genes greatly, some of which may be new biomarkers or new biologic medicinal products. However, until now, little comprehensive analysis has been made of gene-expression changes in cardiomyocytes with myocarditis. In this study, we performed a DNA microarray analysis by using cardiomyocytes from rat experimental autoimmune myocarditis (EAM). On day 0, rats were immunized with porcine cardiac myosin and cardiomyocytes were isolated and purified from EAM hearts and normal hearts by a method that is hardly thought to change gene expressions in cardiomyocytes. RNA from normal cardiomyocytes and cardiomyocytes of EAM on day 18 was analyzed for 7711 gene expressions by DNA microarray. Some gene expressions showed over 10-fold changes. In particular, the regenerated gene (Reg)2/pancreatitis-associated protein (PAP)1 messenger RNA (mRNA) level most markedly increased in the genes, which were clearly expressed in cardiomyocytes rather than in noncardiomyocytes, and it was approximately 2000-fold greater in cardiomyocytes under active myocarditis than normal by real-time reverse transcription polymerase chain reaction analysis. Moreover, we demonstrated that Reg2/PAP1 proteins determined by Western blot analysis and immunohistochemistry and other Reg/PAP family gene expressions were remarkably increased in EAM hearts; in addition, interleukin (IL)-6 expression was significantly related to Reg2/PAP1. It seemed that these data were useful as a reference database of gene-expression changes in cardiomyocytes with myocarditis. The Reg/PAP family, which was found to show dramatically increasing gene expressions by DNA microarray analysis, was suspected to play an important role in myocarditis.
机译:与正常状态相比,患有心肌炎的心肌细胞被认为会极大地改变各种基因的表达,其中一些可能是新的生物标志物或新的生物药物。但是,到目前为止,对心肌炎伴心肌细胞的基因表达变化还没有进行全面的分析。在这项研究中,我们通过使用大鼠实验性自身免疫性心肌炎(EAM)的心肌细胞进行了DNA微阵列分析。在第0天,用猪心肌肌球蛋白免疫大鼠,并通过几乎认为不改变心肌细胞基因表达的方法从EAM心脏和正常心脏分离并纯化心肌细胞。通过DNA微阵列分析来自第18天的正常心肌细胞和EAM的心肌细胞的RNA中的7711个基因表达。一些基因表达显示超过10倍的变化。特别是,再生基因(Reg)2 /胰腺炎相关蛋白(PAP)1信使RNA(mRNA)水平在这些基因中最显着增加,这些基因在心肌细胞中而不是在非心肌细胞中明显表达,大约是2000倍。实时逆转录聚合酶链反应分析显示,活动性心肌炎患者心肌细胞中的心肌细胞比正常人大。此外,我们证明了通过Western印迹分析和免疫组化测定的Reg2 / PAP1蛋白以及其他Reg / PAP家族基因表达在EAM心脏中显着增加。此外,白介素(IL)-6的表达与Reg2 / PAP1显着相关。看来这些数据可用作心肌炎心肌细胞基因表达变化的参考数据库。通过DNA微阵列分析发现Reg / PAP家族显示出显着增加的基因表达,它被怀疑在心肌炎中起重要作用。

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