Locally Prepared Bovine Herpesvirus 1 gE Deleted Vaccine
Induced Immunogenicity in Rabbits
Hammad Ur Rehman1*, Aamir Ghafoor1*,
Masood Rabbani1, Amjad Riaz2, Farhat Nazir
Awan3 and Sohail Raza1
1Institute
of Microbiology, University of Veterinary & Animal Sciences, Lahore,
Pakistan; 2Department of Theriogenology, University of
Veterinary & Animal Sciences, Lahore, Pakistan; 3Provincial
Diagnostic Laboratory, Livestock and Dairy Development, Punjab,
16-Cooper Road, Lahore, 54000
*Corresponding author:
hammad.rehman@uvas.edu.pk;
aamir.ghafoor@uvas.edu.pk
Abstract
In this study, bovine herpesvirus 1 gE deleted
vaccine was prepared from local isolate, by replacing entire gE coding region
with enhanced green fluorescent protein (EGFP) for selection. After transfection
of MDBK cells with genomic viral DNA and EGFP-bearing gE-deletion plasmid,
fluorescent recombinant clones were produced. Deletion of gE gene was confirmed
by PCR. BoHV-1ΔgE recombinants formed smaller plaques but replicated in similar
titer and kinetics as compared to parental virus (UVAS/2) on MDBK cell lines.
In-vivo study showed that locally prepared BoHV-1ΔgE vaccine induced good immune
response. For confirmation of seroconversion of gE, serum samples were also
tested by gE competition ELISA. The
results showed that all rabbits vaccinated with recombinant BoHV-1ΔgE
remained negative in gE competition ELISA. The study concluded that locally prepared
BoHV-1ΔgE marker vaccine can be candidate vaccine to prevent BoHV-1 infections
in Pakistan.
To Cite This Article:
Rehman HU, Ghafoor A, Rabbani M, Riaz A, Awan FNand Raza S, 2022. Locally prepared
bovine herpesvirus 1 gE deleted vaccine induced immunogenicity in rabbits.
Pak Vet J, 42(1): 127-130. http://dx.doi.org/10.29261/pakvetj/2021.049