Adeno-Associated Viruses Serotype 2-Mediated RNA Interference Efficiently Inhibits Rabies Virus Replication In Vitro and In Vivo

被引:8
|
作者
Wu, Hong-Xia [1 ,2 ]
Wang, Hua-Lei [2 ]
Guo, Xiao-Feng [1 ]
Yang, Yu-Jiao [2 ]
Ma, Jin-Zhu [2 ]
Wang, Tie-Cheng [2 ]
Gao, Yu-Wei [2 ]
Zhao, Yong-Kun [2 ]
Yang, Song-Tao [2 ]
Xia, Xian-Zhu [2 ]
机构
[1] South China Agr Univ, Coll Vet Med, Guangzhou 510642, Guangdong, Peoples R China
[2] Acad Mil Med Sci, Mil Vet Inst, Changchun 130122, Jilin Province, Peoples R China
来源
JOURNAL OF VETERINARY MEDICAL SCIENCE | 2013年 / 75卷 / 10期
关键词
AAV2; vectors; inhibit; N gene; RABV; siRNA; GENE-THERAPY; PROTECTS MICE; DELIVERY; VECTORS; SIRNA; PERSISTENCE; SAFETY; CELLS;
D O I
10.1292/jvms.13-0127
中图分类号
S85 [动物医学(兽医学)];
学科分类号
0906 ;
摘要
To investigate the potential of adeno-associated viruses serotype 2 (AAV2)-mediated RNA interference (RNAi) as an antiviral agent against rabies, recombinant AAV2 vectors expressing siRNA targeting the nucleoprotein (N) gene of rabies virus (RABV) (rAAV-N796) were constructed and evaluated. When NA cells pretreated with rAAV-N796 were challenged with RABV, there was a 37.8 +/- 3.4% to 55.1 +/- 5.3% reduction in RABV virus titer. When cells pre-challenged with RABV were treated with rAAV-N796, there was a 4.4 +/- 1.4 to 28.8 +/- 3.2% reduction in RABV virus titer. Relative quantification of RABV transcripts using real-time PCR and Western blot revealed that the knockdown of RABV-N gene transcripts was based on the rAAV-N796 inoculation titer. When any NA cells were treated with rAAV-N796 before or after challenged with RABV, significant reduction in virus titer was observed in both administrations. Mice treated intracerebrally with rAAV-N796 exhibited 50 +/- 5.3 and 62.5 +/- 4.7% protection when challenged intracerebrally or intramuscally, respectively, with lethal RABV. When mice treated intramuscularly with rAAV-N796 were challenged intramuscularly with lethal RABV, they exhibited 37.5 +/- 3.7% protection. When mice were intracerebrally and intramuscularly with rAAV-N796 24 hr after exposure to RABV infection, they exhibited 25 +/- 4.1% protection The N gene mRNA levels in the brains of challenged mice with three different administrations were reduced (55, 68, 32 and 25%, respectively). These results indicated that AAV2 vector-mediated siRNA delivery in vitro in NA cells inhibited RABV multiplication, inhibited RABV multiplication in vivo in the mice brain and imparted partial protection against lethal rabies. So, it may have a potential to be used as an alternative antiviral approach against rabies.
引用
收藏
页码:1355 / 1361
页数:7
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