Record Details

Expression of toxin co-regulated pilus subunit A (TCPA) of Vibrio cholerae and its immunogenic epitopes fused to cholera toxin B subunit in transgenic tomato (Solanum lycopersicum).

DIR@IMTECH: CSIR-Institute of Microbial Technology

View Archive Info
 
 
Field Value
 
Title Expression of toxin co-regulated pilus subunit A (TCPA) of Vibrio cholerae and its immunogenic epitopes fused to cholera toxin B subunit in transgenic tomato (Solanum lycopersicum).
 
Creator Sharma, Manoj Kumar
Singh, Nirmal Kumar
Jani, Dewal
Sisodia, Rama
Thungapathra, M
Gautam, J K
Meena, L S
Singh, Yogendra
Ghosh, Amit
Tyagi, Akhilesh Kumar
Sharma, Arun Kumar
 
Subject QK Botany
 
Description For protection against cholera, it is important to develop efficient vaccine capable of inducing anti-toxin as well as anti-colonizing immunity against Vibrio cholerae infections. Earlier, expression of cholera toxin B subunit (CTB) in tomato was reported by us. In the present investigation, toxin co-regulated pilus subunit A (TCPA), earlier reported to be an antigen capable of providing anti-colonization immunity, has been expressed in tomato. Further, to generate more potent combinatorial antigens, nucleotides encoding P4 or P6 epitope of TCPA were fused to cholera toxin B subunit gene (ctxB) and expressed in tomato. Presence of transgenes in the tomato genome was confirmed by PCR and expression of genes was confirmed at transcript and protein level. TCPA, chimeric CTB-P4 and CTB-P6 proteins were also expressed in E. coli. TCPA protein expressed in E. coli was purified to generate anti-TCPA antibodies in rabbit. Immunoblot and G(M1)-ELISA verified the synthesis and assembly of pentameric chimeric proteins in fruit tissue of transgenic tomato plants. The chimeric protein CTB-P4 and CTB-P6 accumulated up to 0.17 and 0.096% of total soluble protein (TSP), respectively, in tomato fruits. Whereas expression of TCPA, CTB-P4 and CTB-P6 in E. coli can be utilized for development of conventional vaccine, expression of these antigens which can provide both anti-toxin as well as anti-colonization immunity, has been demonstrated in plants, in a form which is potentially capable of inducing immune response against cholera infection.
 
Publisher Springer Science
 
Date 2008-02
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://crdd.osdd.net/open/1062/1/ghosh2008.1.pdf
Sharma, Manoj Kumar and Singh, Nirmal Kumar and Jani, Dewal and Sisodia, Rama and Thungapathra, M and Gautam, J K and Meena, L S and Singh, Yogendra and Ghosh, Amit and Tyagi, Akhilesh Kumar and Sharma, Arun Kumar (2008) Expression of toxin co-regulated pilus subunit A (TCPA) of Vibrio cholerae and its immunogenic epitopes fused to cholera toxin B subunit in transgenic tomato (Solanum lycopersicum). Plant cell reports, 27 (2). pp. 307-18. ISSN 0721-7714
 
Relation http://www.springerlink.com/content/706356232827g331/fulltext.pdf
http://crdd.osdd.net/open/1062/