Burkholderia mallei CLH001 attenuated vaccine strain is immunogenic and protects against acute respiratory glanders

Christopher L. Hatcher, Tiffany M. Mott, Laura A. Muruato, Elena Sbrana, Alfredo Torres

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Burkholderia mallei is the causative agent of glanders, an incapacitating disease with high mortality rates in respiratory cases. Itsendemicity and ineffective treatment options emphasize its public health threat and highlight the need for a vaccine. Live attenuatedvaccines are considered the most viable vaccine strategy for Burkholderia, but single-gene-deletion mutants have not providedcomplete protection. In this study, we constructed the select-agent-excluded B. mallei ΔtonB Δhcp1 (CLH001) vaccinestrain and investigated its ability to protect against acute respiratory glanders. Here we show that CLH001 is attenuated, safe,and effective at protecting against lethal B. mallei challenge. Intranasal administration of CLH001 to BALB/c and NOD SCIDgamma (NSG) mice resulted in complete survival without detectable colonization or abnormal organ histopathology. Additionally,BALB/c mice intranasally immunized with CLH001 in a prime/boost regimen were fully protected against lethal challengewith the B. mallei lux (CSM001) wild-type strain.

Original languageEnglish (US)
Pages (from-to)2345-2354
Number of pages10
JournalInfection and Immunity
Volume84
Issue number8
DOIs
StatePublished - 2016

Fingerprint

Burkholderia mallei
Glanders
Attenuated Vaccines
Vaccines
Burkholderia
Intranasal Administration
Inbred NOD Mouse
Gene Deletion
Public Health
Mortality

ASJC Scopus subject areas

  • Immunology
  • Microbiology
  • Parasitology
  • Infectious Diseases

Cite this

Burkholderia mallei CLH001 attenuated vaccine strain is immunogenic and protects against acute respiratory glanders. / Hatcher, Christopher L.; Mott, Tiffany M.; Muruato, Laura A.; Sbrana, Elena; Torres, Alfredo.

In: Infection and Immunity, Vol. 84, No. 8, 2016, p. 2345-2354.

Research output: Contribution to journalArticle

Hatcher, Christopher L. ; Mott, Tiffany M. ; Muruato, Laura A. ; Sbrana, Elena ; Torres, Alfredo. / Burkholderia mallei CLH001 attenuated vaccine strain is immunogenic and protects against acute respiratory glanders. In: Infection and Immunity. 2016 ; Vol. 84, No. 8. pp. 2345-2354.
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