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Evaluation of Host-Pathogen Responses and Vaccine Efficacy in Mice
Published on: February 22, 2019
Progress on plague vaccine development
Jason A Rosenzweig1, Olufisayo Jejelowo, Jian Sha
1Department of Biology, Center for Bionanotechnology and Environmental Research (CBER), Texas Southern University, 3100 Cleburne Street, Houston, TX 77004, USA. rosenzweigja@tsu.edu
Abstract:
Yersinia pestis (YP), the gram-negative plague bacterium, has shaped human history unlike any other pathogen known to mankind. YP (transmitted by the bite of an infected flea) diverged only recently from the related enteric pathogen Yersinia pseudotuberculosis but causes radically different diseases. Three forms of plague exist in humans: bubonic (swollen lymph nodes or bubos), septicemic (spread of YP through the lymphatics or bloodstream from the bubos to other organs), and contagious, pneumonic plague which can be communicated via YP-charged respiratory droplets resulting in person-person transmission and rapid death if left untreated (50-90% mortality). Despite the potential threat of weaponized YP being employed in bioterrorism and YP infections remaining prevalent in endemic regions of the world where rodent populations are high (including the four corner regions of the USA), an efficacious vaccine that confers immunoprotection has yet to be developed. This review article will describe the current vaccine candidates being evaluated in various model systems and provide an overall summary on the progress of this important endeavor.
Insights
Yersinia pestis, the plague bacterium, poses a significant bioterrorism threat and remains endemic globally. Current vaccine development for Yersinia pestis is ongoing, with several candidates under evaluation to combat this deadly pathogen.
Area of Science:
- Microbiology
- Infectious Diseases
- Immunology
Background:
- Yersinia pestis (YP) is a gram-negative bacterium responsible for the plague, a historically significant and deadly disease.
- YP causes three forms of plague: bubonic, septicemic, and pneumonic, with pneumonic plague being highly contagious and rapidly fatal.
- Despite its threat, particularly in endemic areas and potential bioterrorism, an effective Yersinia pestis vaccine is still lacking.
Purpose of the Study:
- To review current vaccine candidates for Yersinia pestis.
- To summarize the progress in developing an efficacious Yersinia pestis vaccine.
Main Methods:
- Review of existing literature on Yersinia pestis vaccine research.
- Evaluation of vaccine candidates in various model systems.
Main Results:
- Several vaccine candidates are currently being evaluated.
- Progress in Yersinia pestis vaccine development is summarized.
Conclusions:
- An effective Yersinia pestis vaccine is crucial for public health and biodefense.
- Continued research and evaluation of vaccine candidates are necessary to achieve immunoprotection against plague.
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