Spore-FP1 tuberculosis mucosal vaccine candidate is highly protective in guinea pigs but fails to improve on BCG-conferred protection in non-human primates.

Andrew D White, Andy C Tran, Laura Sibley, Charlotte Sarfas, Alexandra L Morrison, Steve Lawrence, Mike Dennis, Simon Clark, Sirine Zadi, Faye Lanni, Emma Rayner, Alastair Copland, Peter Hart, Gil Reynolds Diogo, Matthew J Paul, Miyoung Kim, Fergus Gleeson, Francisco J Salguero, Mahavir Singh, Matthias Stehr, Simon M Cutting, Juan I Basile, Martin E Rottenberg, Ann Williams, Sally A Sharpe, Rajko Reljic
Author Information
  1. Andrew D White: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  2. Andy C Tran: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.
  3. Laura Sibley: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  4. Charlotte Sarfas: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  5. Alexandra L Morrison: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  6. Steve Lawrence: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  7. Mike Dennis: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  8. Simon Clark: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  9. Sirine Zadi: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  10. Faye Lanni: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  11. Emma Rayner: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  12. Alastair Copland: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.
  13. Peter Hart: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.
  14. Gil Reynolds Diogo: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.
  15. Matthew J Paul: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.
  16. Miyoung Kim: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.
  17. Fergus Gleeson: Department of Oncology, The Churchill Hospital, Oxford, United Kingdom.
  18. Francisco J Salguero: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  19. Mahavir Singh: Lionex GmbH, Braunschweig, Germany.
  20. Matthias Stehr: Lionex GmbH, Braunschweig, Germany.
  21. Simon M Cutting: School of Biological Sciences, Royal Holloway University of London, Surrey, United Kingdom.
  22. Juan I Basile: Department of Microbiology, Tumour and Cell Biology and Centre for Tuberculosis Research, Karolinska Institute, Stockholm, Sweden.
  23. Martin E Rottenberg: Department of Microbiology, Tumour and Cell Biology and Centre for Tuberculosis Research, Karolinska Institute, Stockholm, Sweden.
  24. Ann Williams: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  25. Sally A Sharpe: United Kingdom Health Security Agency (UKHSA), Porton Down, Salisbury, United Kingdom.
  26. Rajko Reljic: Institute for Infection and Immunity, St George's University of London, London, United Kingdom.

Abstract

Tuberculosis remains a major health threat globally and a more effective vaccine than the current Bacillus Calmette Guerin (BCG) is required, either to replace or boost it. The Spore-FP1 mucosal vaccine candidate is based on the fusion protein of Ag85B-Acr-HBHA/heparin-binding domain, adsorbed on the surface of inactivated spores. The candidate conferred significant protection against challenge in naïve guinea pigs and markedly improved protection in the lungs and spleens of animals primed with BCG. We then immunized rhesus macaques with BCG intradermally, and subsequently boosted with one intradermal and one aerosol dose of Spore-FP1, prior to challenge with low dose aerosolized Erdman strain. Following vaccination, animals did not show any adverse reactions and displayed higher antigen specific cellular and antibody immune responses compared to BCG alone but this did not translate into significant improvement in disease pathology or bacterial burden in the organs.

Keywords

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MeSH Term

Guinea Pigs
Animals
Tuberculosis Vaccines
BCG Vaccine
Macaca mulatta
Antigens, Bacterial
Tuberculosis
Mycobacterium bovis
Mycobacterium tuberculosis
Spores

Chemicals

Tuberculosis Vaccines
BCG Vaccine
Antigens, Bacterial

Word Cloud

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