Construction of a reporter system to study Burkholderia mallei type III secretion and identification of the BopA effector protein function in intracellular survival

Gregory C. Whitlock, D. Mark Estes, Glenn M. Young, Briana Young, Alfredo Torres

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Summary: Burkholderia mallei, the aetiological agent of glanders disease, is a Gram-negative facultative intracellular bacterium. Despite numerous studies, the detailed mechanism of its pathogenesis is almost unknown. The presence of a type III secretion system (TTSS) is one of the known mechanisms associated with virulence. An intact TTSS indicates that B. mallei is able to secrete proteins in response to different environmental conditions, which could play an important role in pathogenesis. Therefore, characterization of the TTSS and identification of the secreted proteins associated with bacterial pathogenesis could provide crucial information for the development of a candidate vaccine. In the current study, we used an enzymatic reporter system to establish some of the conditions enabling TTS. Construction of the TTSS bopA mutant revealed that BopA is important for B. mallei invasion and intracellular survival. Overall, our study elucidates how BopA can aid in the optimization of TTS and defines the function of TTS effectors in bacterial intracellular survival and invasion.

Original languageEnglish (US)
JournalTransactions of the Royal Society of Tropical Medicine and Hygiene
Volume102
Issue numberSUPPL. 1
DOIs
StatePublished - Dec 2008

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Burkholderia mallei
Glanders
Proteins
Virulence
Vaccines
Bacteria

Keywords

  • Aetiology
  • BopA
  • Burkholderia mallei
  • Intracellular survival
  • Invasion
  • Type III secretion

ASJC Scopus subject areas

  • Parasitology
  • Infectious Diseases
  • Public Health, Environmental and Occupational Health

Cite this

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title = "Construction of a reporter system to study Burkholderia mallei type III secretion and identification of the BopA effector protein function in intracellular survival",
abstract = "Summary: Burkholderia mallei, the aetiological agent of glanders disease, is a Gram-negative facultative intracellular bacterium. Despite numerous studies, the detailed mechanism of its pathogenesis is almost unknown. The presence of a type III secretion system (TTSS) is one of the known mechanisms associated with virulence. An intact TTSS indicates that B. mallei is able to secrete proteins in response to different environmental conditions, which could play an important role in pathogenesis. Therefore, characterization of the TTSS and identification of the secreted proteins associated with bacterial pathogenesis could provide crucial information for the development of a candidate vaccine. In the current study, we used an enzymatic reporter system to establish some of the conditions enabling TTS. Construction of the TTSS bopA mutant revealed that BopA is important for B. mallei invasion and intracellular survival. Overall, our study elucidates how BopA can aid in the optimization of TTS and defines the function of TTS effectors in bacterial intracellular survival and invasion.",
keywords = "Aetiology, BopA, Burkholderia mallei, Intracellular survival, Invasion, Type III secretion",
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T1 - Construction of a reporter system to study Burkholderia mallei type III secretion and identification of the BopA effector protein function in intracellular survival

AU - Whitlock, Gregory C.

AU - Estes, D. Mark

AU - Young, Glenn M.

AU - Young, Briana

AU - Torres, Alfredo

PY - 2008/12

Y1 - 2008/12

N2 - Summary: Burkholderia mallei, the aetiological agent of glanders disease, is a Gram-negative facultative intracellular bacterium. Despite numerous studies, the detailed mechanism of its pathogenesis is almost unknown. The presence of a type III secretion system (TTSS) is one of the known mechanisms associated with virulence. An intact TTSS indicates that B. mallei is able to secrete proteins in response to different environmental conditions, which could play an important role in pathogenesis. Therefore, characterization of the TTSS and identification of the secreted proteins associated with bacterial pathogenesis could provide crucial information for the development of a candidate vaccine. In the current study, we used an enzymatic reporter system to establish some of the conditions enabling TTS. Construction of the TTSS bopA mutant revealed that BopA is important for B. mallei invasion and intracellular survival. Overall, our study elucidates how BopA can aid in the optimization of TTS and defines the function of TTS effectors in bacterial intracellular survival and invasion.

AB - Summary: Burkholderia mallei, the aetiological agent of glanders disease, is a Gram-negative facultative intracellular bacterium. Despite numerous studies, the detailed mechanism of its pathogenesis is almost unknown. The presence of a type III secretion system (TTSS) is one of the known mechanisms associated with virulence. An intact TTSS indicates that B. mallei is able to secrete proteins in response to different environmental conditions, which could play an important role in pathogenesis. Therefore, characterization of the TTSS and identification of the secreted proteins associated with bacterial pathogenesis could provide crucial information for the development of a candidate vaccine. In the current study, we used an enzymatic reporter system to establish some of the conditions enabling TTS. Construction of the TTSS bopA mutant revealed that BopA is important for B. mallei invasion and intracellular survival. Overall, our study elucidates how BopA can aid in the optimization of TTS and defines the function of TTS effectors in bacterial intracellular survival and invasion.

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KW - BopA

KW - Burkholderia mallei

KW - Intracellular survival

KW - Invasion

KW - Type III secretion

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