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A Toll-Spätzle Pathway in the Immune Response of Bombyx mori.
Yu, Bin; Sang, Qi; Pan, Guoqing; Li, Chunfeng; Zhou, Zeyang.
Afiliação
  • Yu B; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
  • Sang Q; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
  • Pan G; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
  • Li C; Chongqing Key Laboratory of Microsporidia Infection and Control, Southwest University, Chongqing 400715, China.
  • Zhou Z; State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China.
Insects ; 11(9)2020 Sep 01.
Article em En | MEDLINE | ID: mdl-32882853
The Toll-Spätzle pathway is a crucial defense mechanism in insect innate immunity, it plays an important role in fighting against pathogens through the regulation of antimicrobial peptide gene expression. Although Toll and Spätzle (Spz) genes have been identified in Bombyx mori, little is known regarding the specific Spz and Toll genes members involved in innate immunity. There is also limited direct evidence of the interaction between Spz and Toll. In this study, the dual-luciferase reporter assay results showed that BmToll11 and BmToll9-1 could activate both drosomycin and diptericin promoters in S2 cells. Furthermore, BmToll11, BmToll9-1, and five BmSpzs genes were found to be significantly upregulated in B. mori infected by Escherichia coli and Staphylococcus aureus. Additionally, the yeast two-hybrid assay results confirmed that BmSpz2, but not other BmSpzs, could interact with both BmToll11 and BmToll9-1. These findings suggest that the activated BmSpz2 can bind with BmToll11 and BmToll9-1 to induce the expression of AMPs after the silkworm is infected by pathogens.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Insects Ano de publicação: 2020 Tipo de documento: Article País de afiliação: China País de publicação: Suíça

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Revista: Insects Ano de publicação: 2020 Tipo de documento: Article País de afiliação: China País de publicação: Suíça