1
|
Prejit, Pratheesh PT, Nimisha S, Jess V, Asha K, Agarwal RK. Expression and purification of an immunogenic SUMO-OmpC fusion protein of Salmonella Typhimurium in Escherichia coli. Biologicals 2019; 62:22-26. [PMID: 31668855 DOI: 10.1016/j.biologicals.2019.10.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 10/17/2019] [Accepted: 10/19/2019] [Indexed: 01/01/2023] Open
Abstract
Salmonella is found to be a major causes of food borne diseases globally. Poultry products contaminated with this pathogen is one of the major sources of infections in humans. Outer membrane protein C (OmpC) of Salmonella Typhimurium is a promising DNA vaccine candidate to mitigate Salmonella infection in poultry. However, the large-scale production of bioactive recombinant OmpC (rOmpC) protein is hindered due to the formation of inclusion bodies in Escherichia coli. The objective of this work was to attain high level expression of rOmpC protein, purify and evaluate its functional properties. The ompC gene was optimized and fused with small ubiquitin-related modifier (SUMO) gene for high level expression as soluble protein. The fusion protein with ~58 kDa molecular weight was observed on SDS-PAGE gel. The expression levels of rOmpC fusion protein reached maximum of 38% of total soluble protein (TSP) after 8 h of 0.2% rhamnose induction. Protein purification was carried out using nickel nitrilotriacetic acid (Ni-NTA) purification column. Western blot were performed to analyse expression and immunoreactivity of rOmpC fusion protein. The results indicate that SUMO fusion system is ideal for large scale production of functional rOmpC fusion protein expression in E. coli.
Collapse
Affiliation(s)
- Prejit
- Department of Veterinary Public Health, CV&AS, Kerala Veterinary and Animal Sciences University, India; Centre for One Health Education, Advocacy, Research and Training, Kerala Veterinary and Animal Sciences University, Pookode, Wayanad, Kerala, 673576, India.
| | - Prakasam Thanka Pratheesh
- Department of Veterinary Public Health, CV&AS, Kerala Veterinary and Animal Sciences University, India
| | - Soman Nimisha
- Department of Veterinary Public Health, CV&AS, Kerala Veterinary and Animal Sciences University, India
| | - Vergis Jess
- Department of Veterinary Public Health, CV&AS, Kerala Veterinary and Animal Sciences University, India; Centre for One Health Education, Advocacy, Research and Training, Kerala Veterinary and Animal Sciences University, Pookode, Wayanad, Kerala, 673576, India
| | - Karthikeyan Asha
- Department of Veterinary Public Health, CV&AS, Kerala Veterinary and Animal Sciences University, India
| | - Rajesh Kumar Agarwal
- National Salmonella Centre (Vet), Division of Bacteriology and Mycology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243122, U.P, India
| |
Collapse
|
2
|
A monoclonal antibody targeting the dimer interface of epidermal growth factor receptor (EGFR). Immunol Lett 2016; 180:39-45. [DOI: 10.1016/j.imlet.2016.10.011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/14/2016] [Accepted: 10/31/2016] [Indexed: 01/19/2023]
|