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Determination of Vaccine Immunogenicity Using Bovine Monocyte-Derived Dendritic Cells
Published on: May 19, 2023
Melioidosis and glanders modulation of the innate immune system: barriers to current and future vaccine approaches
Sophie A Aschenbroich1, Eric R Lafontaine2, Robert J Hogan2,3
1a Department of Pathology , College of Veterinary Medicine, University of Georgia , Athens , GA , USA.
Abstract:
Burkholderia pseudomallei and Burkholderia mallei are pathogenic bacteria causing fatal infections in animals and humans. Both organisms are classified as Tier 1 Select Agents owing to their highly fatal nature, potential/prior use as bioweapons, severity of disease via respiratory exposure, intrinsic resistance to antibiotics, and lack of a current vaccine. Disease manifestations range from acute septicemia to chronic infection, wherein the facultative intracellular lifestyle of these organisms promotes persistence within a broad range of hosts. This ability to thrive intracellularly is thought to be related to exploitation of host immune response signaling pathways. There are currently considerable gaps in our understanding of the molecular strategies employed by these pathogens to modulate these pathways and evade intracellular killing. A better understanding of the specific molecular basis for dysregulation of host immune responses by these organisms will provide a stronger platform to identify novel vaccine targets and develop effective countermeasures.
Insights
Burkholderia bacteria cause fatal infections and are bioweapon threats. Understanding how these pathogens manipulate host immune responses is crucial for developing vaccines and treatments.
Area of Science:
- Microbiology
- Immunology
- Pathogen Research
Background:
- Burkholderia pseudomallei and Burkholderia mallei are dangerous pathogens causing severe, often fatal, infections in humans and animals.
- Classified as Tier 1 Select Agents, they pose significant biosecurity risks due to high fatality, antibiotic resistance, and lack of vaccines.
Purpose of the Study:
- To investigate the molecular mechanisms Burkholderia species use to evade host immune responses.
- To identify strategies these pathogens employ to survive and persist within host cells.
Main Methods:
- The study focuses on understanding the molecular basis of host immune dysregulation by these bacteria.
- Research aims to elucidate how these pathogens exploit host signaling pathways for intracellular survival.
Main Results:
- Gaps exist in understanding the molecular strategies used by these pathogens to modulate host immune pathways.
- The intracellular lifestyle of these bacteria is key to their persistence and ability to evade immune defenses.
Conclusions:
- Elucidating the molecular interactions between Burkholderia and host immune systems is essential.
- This knowledge will facilitate the development of novel vaccines and effective countermeasures against these biothreat agents.
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