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Updated: Feb 22, 2026
Fabrication of Pulsatile Polymeric Microparticles Encapsulating Rabies Antigen
Published on: May 12, 2023
Prokaryotic Expression, Purification, and Polyclonal Antibody Production of a Truncated Recombinant Rabies Virus L
Jinyang Zhang1, Zian Jin1, Tao Sun1
1Research Center of Molecular Medicine of Yunnan Province, Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, P.R. China.
Background:
Rabies virus (RABV) is a deadly neurotropic virus that causes the disease of rabies in humans and animals. L protein is one of the large structural protein of rabies virus, which displays multiple enzymatic activities, and is required for viral transcription and replication.
Objectives:
A truncated L protein of Rabies virus is being cloned, expressed and purified to produce relevant polyclonal antibody.
Materials And Methods:
The gene fragment of L protein of RABV was subcloned into prokaryotic expression vector pET- 28a and transformed into E. coli Rosetta DE3 host strain. The recombinant L protein of RABV was expressed and characterized by SDS-PAGE and western blot analysis using anti-his tag antibody. Mice were immunized with the purified recombinant L protein, the reaction of the anti-serum was checked by immunofluorescence and dot-blot, respectively.
Results:
The results of PCR and sequencing confirmed that the fragment of L gene of RABV was successfully cloned into the expression vector. The expression of recombinant L protein fragment induced by IPTG was confirmed by the band of 43 kDa in SDS-PAGE and western blot. The antiserum of purified L protein immunized mice was reacted with RABV infected N2a cells and suckling mouse brain tissue lysates.
Conclusions:
Our data showed that the recombinant L protein produced by pET-28a vector was very successful, and the purified L protein could efficiently induce the antibody response in mice. The antiserum could recognize the virus in RABV infected cells and tissue very well.
