partial characterisation of salmonella gallinarum clinical isolate and expression of its antigenic outer membrane protein c (ompc) gene in planta
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ID: 254000
2015
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Abstract
Fowl typhoid’s epidemiology and disease intervention have been extensively studied since 1950's owing to its high mortality and morbidity rates. Even up-to-date, outbreaks are incessantly haunting poultry industries of major continents. Salmonella gallinarum, the etiologic agent of fowl typhoid, was used to develop a series of vaccination regime. However, treatments are gradually losing effectiveness due to residual virulence from mutated strains and rapid evolution of multi-drug resistance isolates. Hence, in planta subunit vaccine production is proposed to surpass current limitations. The homotrimeric osmoporin (outer membrane protein C) is a potent candidate antigen that confers momentous stimulation of humoral and cell-mediated immune responses in broilers. This research signified the potential development of a plant-expressed OmpC immunogen. The project scope embarked on the identification of S. gallinarum clinical isolate, construction of expression cassette and delivery of constructs into Nicotiana benthamiana via agroinfiltration. The OmpC transcripts and proteins were detected successfully at the molecular weights of ~1.002 kbp and ~35 kDa, respectively. These preliminary findings pave the feasibility of biomanufacturing a safe and cost-effective fowl typhoid vaccine that would confer multi-protection against other significant Salmonella infections attributed to the high sequence homology of the OmpC gene. Speed improvement is demonstrated and transient expression appears to outperform conventional platforms in expediting vaccine production for an emerging pandemic strain.
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| Authors | ;Ee Leen Pang;Hwei-San Loh |
| Journal | food and chemical toxicology |
| Year | 2015 |
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| Keywords | Keywords not found |
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