Data/hora: 10/06/2024 09:41:23

Provedor de dados: 	19	
País: 	Japan	
Título: 	Host Cholesterol Synthesis Contributes to Growth of Intracellular Toxoplasma gondii in Macrophages	
Autores: 	NISHIKAWA, Yoshifumi; IBRAHIM, Hany M.; KAMEYAMA, Kyohko; SHIGA, Ikumi; HIASA, Jun; XUAN, Xuenan; 西川, 義文; 玄, 学南.	
Data: 	2011	
Ano: 	2011	
Palavras-chave: 	Cholesterol; Lipid metabolism; Macrophage; Parasitology; Toxoplasma gondii.	
Resumo: 	The intracellular protozoan Toxoplasma gondii lacks the ability to synthesize sterol and scavenges cholesterol from the lowdensity lipoprotein receptor (LDLR) pathway of its host to facilitate replication. Sterol biosynthesis inhibitors, however, have a demonstrated anti-Toxoplasma effect. In this study, we examined the host mevalonate pathway as a novel source of cholesterol for T. gondii and its effects on parasite growth in macrophages. Parasite growth did not significantly change in the absence of LDLR or when LDL was exogenously supplemented. Lovastatin and compactin, both inhibitors of hydroxymethylglutaryl-CoA (HMG-CoA) reductase in the mevalonate pathway, significantly inhibited T. gondii growth in both wild-type and LDLR-knockout macrophages. Parasite growth was also suppressed by squalestatin, an inhibitor of squalene synthase, despite mevalonate producing isoprenoid intermediates in host cells. The present study demonstrates that lovastatin, compactin and squalestatin have anti-Toxoplasma activities and that the host cholesterol synthesis may contribute to parasite growth in macrophages.	
Idioma: 	Inglês	
Identificador: 	http://ir.obihiro.ac.jp/dspace/handle/10322/3583	
Editor: 	Japanese Society of Veterinary Science	
Formato: 	application/pdf	
Fonte: 	Japanese Society of Veterinary Science