鸡耳蜗EFNA2基因RNAi慢病毒载体的构建及其靶基因离体沉默效率

Construction of RNAi Lentiviral Vector Targeting EFNA2 Gene and Its Effect of Gene Silencing in PAN of Chicken

余佳;向明亮;吴皓;沈晨凌;

1:上海交通大学医学院附属新华医院耳鼻咽喉-头颈外科

2:上海交通大学医学院耳科学研究所

摘要
目的构建鸡耳蜗EFNA2基因的RNA干扰(RNAi)慢病毒载体,在离体培养原代鸡听神经细胞中鉴定其沉默效率。方法针对鸡EFNA2基因序列设计特异性小干扰RNA(small interfering RNA,siRNA)靶点,构建慢病毒pFU-GW-iRNA载体,将筛选所得有效短发卡RNA(short hairpin RNA,shRNA)慢病毒载体在293T细胞中包装成病毒颗粒,随后将其感染离体培养原代鸡听神经细胞,最后采用Real-time PCR检测靶基因的沉默效率。结果 PCR克隆鉴定及测序结果显示所构建的shRNA慢病毒载体正确无误,包装病毒后的滴度为2.0×109 TU/ml,分别命名为LV-GFP-EFNA2-shRNA-l、LV-GFP-EFNA2-shRNA-2和LV-GFP-EF-NA2-shRNA-3。ShRNA慢病毒颗粒感染目的细胞后,EFNA2基因的mRNA表达量较阴性对照载体慢病毒感染组分别下降了76.11%、61.87%和68.44%。结论本研究成功构建了鸡EFNA2基因的RNAi慢病毒表达载体,并能在离体培养的原代鸡听神经细胞中有效沉默靶基因。
关键词
EFNA2基因;RNAi;慢病毒;鸡原代听神经细胞
基金项目(Foundation):
上海市自然科学基金资助项目(08ZR1414900,11ZR1423600)
作者
余佳;向明亮;吴皓;沈晨凌;
参考文献

1 Ryals BM,Rubel EW.Hair cell regeneration after acoustic trauma in adult Coturnix quail[J].Science,1998,240:1 774.

2 Cruz RM,Lambert PR,Rubel EW.Light microscopic evi-dence of hair cell regeneration after gentamycin toxicity in chick cochlea[J].Arch Otolaryngol Head Neck Surg,1987,113:1 058.

3 Xiang ML,Mu MY,Pao X.Reinnervation of regenerated hair cells in the basilar papilla after kanamycine ototoxicity[J].Acta Otolaryngol(Stockh),2000,120:912.

4 Lee KH,Warchol ME.EphrinA2 may play a role in axon guidance during hair cell regeneration[J].Laryngoscope,2005,115:1 021.

5向明亮,吴皓,李蕴,等.鸡卡那霉素中毒后EphrinA2蛋白表达与耳蜗毛细胞神经连接再生及重塑的关系[J].听力学及言语疾病杂志,2009,17:570.

6 Couto LB,High KA.Viral vector-mediated RNA interfer-ence[J].Curr Opin Pharmacol,2010,10:534.

7 Kuenzel T,Mnig B,Wagner H,et al.Neuronal differentia-tion of the early embryonic auditory hindbrain of the chicken in primary culture[J].Eur J Neurosci,2007,25:974.

8 Zareen N,Greene LA.Protocol for culturing sympathetic neu-rons from rat superior cervical ganglia(SCG)[J].Journal of Visualized Experiments,2009,30:23.

9 Bianchi LM,Dinsio K,Davoli K,et al.Lac z Histochemistry and immunohistochemistry reveal ephrin-B ligand expression in the inner ear[J].J Histochem Cytochem,2002,50:1 641.

10 Cramer KS,Karam SD,Bothwell M,et al.Expression of EphB receptors and EphrinB ligands in the developing chick auditory brainstem[J].J Comp Neurol,2002,452:51.

11 Siddiqui SA,Cramer KS.Differential expression of Eph re-ceptors and ephrins in the cochlear ganglion and eighth crani-al nerve of the chick embryo[J].J Comp Neurol,2005,482:309.

本文信息

PDF(249K)

本文作者相关文章

余佳向明亮吴皓沈晨凌