Article (Scientific journals)
Effect of omp10 or omp19 deletion on Brucella abortus outer membrane properties and virulence in mice.
Tibor, Anne; Wansard, Valerie; Bielartz, Valery et al.
2002In Infection and Immunity, 70 (10), p. 5540-6
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Keywords :
Animals; Antigens, Bacterial; Bacterial Outer Membrane Proteins/genetics/physiology; Brucella abortus/genetics/growth & development/pathogenicity/physiology; Brucellosis/etiology/microbiology; Cattle; Cell Line; Female; Gene Deletion; Genes, Bacterial; Hela Cells; Humans; Lipoproteins; Mice; Mice, Inbred BALB C; Mutation
Abstract :
[en] The distinctive properties of Brucella outer membrane have been considered to be critical for Brucella sp. virulence. Among the outer membrane molecules possibly related to these properties, Omp10 and Omp19 are immunoreactive outer membrane lipoproteins. Moreover, these proteins of Brucella could constitute a new family of outer membrane proteins specifically encountered in the family RHIZOBIACEAE: We evaluated the impact of omp10 or omp19 deletion on Brucella abortus outer membrane properties and virulence in mice. The omp10 mutant was dramatically attenuated for survival in mice and was defective for growth in minimal medium but was not impaired in intracellular growth in vitro, nor does it display clear modification of the outer membrane properties. Significantly fewer brucellae were recovered from the spleens of mice infected with the omp19 mutant than from those of mice infected with the parent strain at 4 and 8 weeks postinfection. The omp19 mutant exhibited an increase in sensitivity to the polycation polymyxin B and to sodium deoxycholate. These results indicate that inactivation of the omp19 gene alters the outer membrane properties of B. abortus.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Tibor, Anne
Wansard, Valerie
Bielartz, Valery
Delrue, Rose-May
DANESE, Isabelle ;  Université de Liège - ULiège > GIGA-M : Coordination scientifique
Michel, Patrick
Walravens, Karl
Godfroid, Jacques
Letesson, Jean-Jacques
Language :
English
Title :
Effect of omp10 or omp19 deletion on Brucella abortus outer membrane properties and virulence in mice.
Publication date :
2002
Journal title :
Infection and Immunity
ISSN :
0019-9567
eISSN :
1098-5522
Publisher :
American Society for Microbiology, Washington, United States - District of Columbia
Volume :
70
Issue :
10
Pages :
5540-6
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 10 January 2013

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