期刊
出版社
NATL ACAD SCIENCES
DOI: 10.1073/pnas.2021864118
关键词
DAF-12; nuclear receptor; coactivator; nematode parasite; Strongyloides stercoralis
资金
- NIH [R33 AI105856, R01 AI050668]
- Robert A. Welch Foundation [I-1558, I-1275]
- Howard Hughes Medical Institute
The nematode-specific nuclear receptor DAF-12 interacts with a parasite-specific coactivator DIP-1 in Strongyloides spp., crucial for development and infectious stage reactivation. CRISPR/Cas9 mutagenesis studies confirm the essential role of DAF-12 and DIP-1 in governing parasite development. This reveals a distinct nuclear receptor/coactivator signaling pathway in parasite development.
DAF-12 is nematode-specific nuclear receptor that has been proposed to govern development of the infectious stage of parasitic species, including Strongyloides stercoralis. Here, we identified a parasite-specific coactivator, called DAF-12 interacting protein-1 (DIP-1), that is required for DAF-12 ligand-dependent transcriptional activity. DIP-1 is found only in Strongyloides spp. and selectively interacts with DAF-12 through an atypical receptor binding motif. Using CRISPR/Cas9-directed mutagenesis, we demonstrate that DAF-12 is required for the requisite developmental arrest and the ligand-dependent reactivation of infectious S. stercoralis infective third-stage larvae, and that these effects require the DIP-1 coactivator. These studies reveal the existence of a distinct nuclear receptor/coactivator signaling pathway that governs parasite development.
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