loading page

Enhancement of the immunogenicity of a Mycobacterium tuberculosis fusion protein using ISCOMATRIX and PLUSCOM nano-adjuvants after nasal administration in mice
  • +3
  • Arshid Yousefi Avarvand,
  • Zahra Meshkat,
  • Farzad Khademi,
  • Ehsan Aryan,
  • Mojtaba Sankian,
  • Mohsen Tafaghodi
Arshid Yousefi Avarvand
Ahvaz Jondishapour University of Medical Sciences
Author Profile
Zahra Meshkat
Mashhad University of Medical Sciences
Author Profile
Farzad Khademi
Ardabil University of Medical Sciences
Author Profile
Ehsan Aryan
Mashhad University of Medical
Author Profile
Mojtaba Sankian
Mashhad University of Medical Sciences Bu Ali Avicenna Research Institute
Author Profile
Mohsen Tafaghodi
Mashhad University of Medical Sciences

Corresponding Author:[email protected]

Author Profile

Abstract

Background: Tuberculosis (TB), a contagious disease caused by Mycobacterium tuberculosis (M. tuberculosis), remains a health problem worldwide and this infection has the highest mortality rate among bacterial infections. Current studies suggest that intranasal administration of new tuberculosis vaccines could enhance the immunogenicity of M. tuberculosis antigens. Hence, we aim to evaluate the protective efficacy and immunogenicity of HspX/EsxS fusion protein of M. tuberculosis along with ISCOMATRIX and PLUSCOM nano-adjuvants and MPLA through the intranasal administration in mice model. Methods: in present study, the recombinant fusion protein was expressed in Escherichia coli and purified and used to prepare different nanoparticle formulations in combination with ISCOMATRIX and PLUSCOM nano-adjuvants and MPLA. Mice were intranasally vaccinated with each formulation three times at an interval of 2 weeks. Three weeks after final vaccination, IFN-γ, IL-4. IL-17 and TGF-β concentration in supernatant of cultured splenocytes of vaccinated mice as well as serum titers of IgG1 and IgG2a and sIgA titers in nasal lavagewere determined. Results: According to obtained results, intranasally vaccinated mice with formulations containing ISCOMATRIX and PLUSCOM nano-adjuvants and MPLA could effectively induced IFN-γ and sIgA responses. Moreover, both HspX/EsxS/ISCOMATRIX/MPLA and HspX/EsxS/PLUSCOM/MPLA and their BCG booster formulation could strongly stimulate the immune system and enhance the immunogenicity of M. tuberculosis antigens. Conclusion: The results demonstrate the potential of HspX/EsxS-fused protein in combination with ISCOMATRIX, PLUSCOM and MPLA after nasal administration in enhancing immune response against of M. tuberculosis antigens. Both nanoparticles were good adjuvants in order to promote immunogenicity of TB fused antigen. so, nasal immunization with these formulations, could induce immune responses and considered as new TB vaccine or as BCG booster.