Article (Scientific journals)
Secreted metalloprotease gene family of Microsporum canis
Brouta, Frédéric; Descamps, Frédéric; Monod, Michel et al.
2002In Infection and Immunity, 70 (10), p. 5676-5683
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Abstract :
[en] Keratinolytic proteases secreted by dermatophytes are likely to be virulence-related factors. Microsporum canis, the main agent of dermatophytosis in dogs and cats, causes a zoonosis that is frequently reported. Using Aspergillus fumigatus metalloprotease genomic sequence (MEP) as a probe, three genes (MEP1, MEP2, and MEP3) were isolated from an M. canis genomic library. They presented a quite-high percentage of identity with both A. fumigatus MEP and Aspergillus oryzae neutral protease I genes. At the amino acid level, they all contained an HEXXH consensus sequence, confirming that these M. canis genes (MEP genes) encode a zinc-containing metalloprotease gene family. Furthermore, MEP3 was found to be the gene encoding a previously isolated M. canis 43.5-kDa keratinolytic metalloprotease, and was successfully expressed as an active recombinant enzyme in Pichia pastoris. Reverse transcriptase nested PCR performed on total RNA extracted from the hair of M. canis-infected guinea pigs showed that at least MEP2 and MEP3 are produced during the infection process. This is the first report describing the isolation of a gene family encoding potential virulence-related factors in dermatophytes.
Disciplines :
Immunology & infectious disease
Author, co-author :
Brouta, Frédéric
Descamps, Frédéric
Monod, Michel
Vermout, Sandy
Losson, Bertrand ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Parasitologie et pathologie des maladies parasitaires
Mignon, Bernard  ;  Université de Liège - ULiège > Département des maladies infectieuses et parasitaires > Parasitologie et pathologie des maladies parasitaires
Language :
English
Title :
Secreted metalloprotease gene family of Microsporum canis
Publication date :
October 2002
Journal title :
Infection and Immunity
ISSN :
0019-9567
eISSN :
1098-5522
Publisher :
Amer Soc Microbiology, Washington, United States - Washington
Volume :
70
Issue :
10
Pages :
5676-5683
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 17 March 2009

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