Abstract:
:Rabies virus (RV) causes a fatal disease in both human and animals. The disease can be prevented by post-exposure prophylaxis in individuals exposed to RV. However, the neutralization effect is limited after the virus enters into the host cells. So, it is important to identify new targets for rabies therapy. In this study, a human antibody RV1A2 specific to RV phosphoprotein (RV-P) was generated from a human naïve immune antibody library. The antibody recognized all forms of the phosphoproteins including the full length (P1) and short length of the P proteins (P2, P3, P4, and P5). The epitope mapping and the molecular docking of antigen-antibody complex showed that the antibody targets at a conserved epitope of 'VLGWV' ranging from amino acid (aa) 262 to 266 at C-terminal domain of the P protein, which locates at a hydrophobic pocket region in the C-terminal of the RV-P. The aa W265 within the epitope is on the flat surface of the domain, suggesting that it may be a critical amino acid for the functions of the P protein. Our results further showed that intracellular antibody RV1A2 which targets at the C-terminal domain of the P protein could effectively inhibit RV propagation 2-4 days post infection. These results suggest that the conserved C-terminal domain may be used as a new target for drug discovery, which highlights an intracellular inhibition of RV propagation and provides a potential novel way to treat RV infection.
journal_name
Acta Biochim Biophys Sin (Shanghai)journal_title
Acta biochimica et biophysica Sinicaauthors
Liu Y,Sun L,Yu P,Li A,Li C,Tang Q,Li D,Liang Mdoi
10.1093/abbs/gmv060subject
Has Abstractpub_date
2015-10-01 00:00:00pages
815-23issue
10eissn
1672-9145issn
1745-7270pii
gmv060journal_volume
47pub_type
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