SIRT1基因shRNA慢病毒载体构建及干扰效应检测

Construction of a short hairpin RNA interference lentiviral vector of SIRT1 gene and detection of interference effect

背景:SIRT1基因在细胞能量代谢、凋亡及衰老过程中发挥极重要的作用,另有研究发现SIRT1可能在炎症反应方面起着调控作用。目的:构建SIRT1特异性的shRNA慢病毒载体,并初步检测其对THP-1细胞SIRT1基因的抑制效应。方法:设计SIRT1靶点特异性的寡核苷酸序列,连接到经AgeⅠ和EcoRⅠ酶切线性化的pGCSIL-GFP载体,包装293T细胞产生慢病毒,再转染THP-1细胞,通过实时荧光定量PCR实验及WesternBlot检测对SIRT1靶基因的抑制情况。结果与结论:阳性克隆PCR及测序证实SIRT1基因shRNA慢病毒载体构建成功,实时荧光定量PCR及Western Blot检测该载体在mRNA和蛋白水平能抑制THP-1细胞的SIRT1表达。

BACKGROUND： SIRT1 gene plays a very important role studies have found that SIRT1 may play a regulatory role n cell energy metabolism, apoptosis and ageing, while other n the inflammatory response. OBJECTIVE： To construct short hairpin RNA interference lentiviral vector of SIRT1 gene and to evaluate their inhibitory effect in THP-1 cells. METHODS： The SIRI1 target specific oligonucleotide sequence was designed, synthesized and connected into the pGCSIL-GFP vector digested by Age ] and EcoR [ 293T cells were packaged to produce the lentivirus, and then transfected with THP-1 cells. The inhibitory effect on SIRT1 gene was tested by the real-time quantitative PCR and Western Blot. RESULTS AND CONCLUSION： The PCR and DNA sequencing of positive clones demonstrated that the lentivirus shRNA vector of SIRT1 gene was constructed successfully. The real-time quantitative PCR and Western Blot confirmed that the vector could suppress the expression level of SIRT1 at mRNA and protein levels.