Journal article

Publication year: 2012

Journal: PLoS ONE

Volume number: 7

Issue number: 4

ISSN: 1932-6203

Open access status: Gold

DOI Link: https://doi.org/10.1371/journal.pone.0035503

Publisher: Public Library of Science

Abstract: 
In this study we propose a novel bacterial vaccine strategy where non-pathogenic bacteria are complemented with traits desirable for the induction of protective immunity. To illustrate the proof of principle of this novel vaccination strategy, we use the model organism of intracellular immunity Listeria. We introduced a, low copy number BAC-plasmid harbouring the virulence gene cluster (vgc) of L. monocytogenes (Lm) into the non-pathogenic L. innocua (L.inn) strain and examined for its ability to induce protective cellular immunity. The resulting strain (L.inn::vgc) was attenuated for virulence in vivo and showed a strongly reduced host detrimental inflammatory response compared to Lm. Like Lm, L.inn::vgc induced the production of Type I Interferon's and protection was mediated by Listeria-specific CD8(+) T cells. Rational vaccine design whereby avirulent strains are equipped with the capabilities to induce protection but lack detrimental inflammatory effects offer great promise towards future studies using non-pathogenic bacteria as vectors for vaccination.

Harvard Citation style: Mohamed, W., Sethi, S., Tchatalbachev, S., Darji, A. and Chakraborty, T. (2012) Protective Immunity to Listeria Monocytogenes Infection Mediated by Recombinant Listeria innocua Harboring the VGC Locus, PLoS ONE, 7(4), Article e35503. https://doi.org/10.1371/journal.pone.0035503

APA Citation style: Mohamed, W., Sethi, S., Tchatalbachev, S., Darji, A., & Chakraborty, T. (2012). Protective Immunity to Listeria Monocytogenes Infection Mediated by Recombinant Listeria innocua Harboring the VGC Locus. PLoS ONE. 7(4), Article e35503. https://doi.org/10.1371/journal.pone.0035503