Loss of matrix metalloproteinase 9 activity in Theileria annulata-attenuated cells is at the transcriptional level and is associated with differentially expressed AP-1 species.
Mol Biochem Parasitol
; 106(1): 51-61, 2000 Feb 25.
Article
em En
| MEDLINE
| ID: mdl-10743610
ABSTRACT
The schizont stage of the protozoan parasite Theileria annulata reversibly transforms bovine monocytes into an immortalised and metastatic state. We have been studying T. annulata induction of host matrix metalloproteinases (MMP) which are involved in parasite dissemination and pathogenesis. We have observed that prolonged in vitro culture of T. annulata-infected cell lines results in their attenuation and this process is associated with alterations in both host and parasite gene expression. In particular, a loss in bovine MMP expression in later passage cultures suggests that these parasite-induced MMPs are virulence factors. As a means to further our understanding of the attenuation process we examine in detail the parasite-induced differential expression of one particular bovine proteinase, MMP9, in non-attenuated (p58) and attenuated (p158) passage levels of the Ode vaccine line. We show here that MMP9 expression is regulated at the transcriptional level and we suggest that a particular parasite-induced AP-1 recognition transcription factor present in the Ode non-attenuated line may have a role to play in the expression of this host gene.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Monócitos
/
Theileria annulata
/
Fator de Transcrição AP-1
/
Metaloproteinase 9 da Matriz
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Mol Biochem Parasitol
Ano de publicação:
2000
Tipo de documento:
Article
País de afiliação:
Reino Unido