Molecular cloning and expression analysis of a dorsal homologue from Eriocheir sinensis

作者：Yu, Ai-Qing; Jin, Xing-Kun; Li, Shuang; Guo, Xiao-Nv; Wu, Min-Hao; Li, Wei-Wei; Wang, Qun^*

来源：Developmental and Comparative Immunology, 2013, 41(4): 723-727.

DOI：10.1016/j.dci.2013.08.013

• Chinese mitten crab
• Innate immune signaling
• Dorsal
• PAMPs

Dorsal as a crucial component of Toll signaling pathway, played important roles in induction and regulation of innate immune responses. In this study, we cloned a NF-kappa B-like transcription factor Dorsal from Eriocheir sinensis and designated it as EsDorsal. The full-length cDNA of EsDorsal was 2493 bp with a 2022-bp open reading frame (ORF) encoding a 673-amino acid protein. This protein contained a 171 -residue conserved Rel homology domain (RHD) and a 102-residue Ig-like, plexins and transcription factors domain (IPT). By phylogenetic analysis, EsDorsal was clustered into one group together with other invertebrate Dorsals or NF-kappa Bs, and then clustered with vertebrate NF-kappa Bs. Quantitative real-time polymerase chain reaction (qRT-PCR) analysis results showed that (a) EsDorsal had higher expression level in immune organs; (b) EsDorsal differentially induced after injection of lipopolysaccharides (LPS), peptidoglycan (PG) or zymosan (GLU). Importantly, EsDorsal was more responsive to LPS than GLU and PG. Collectively, EsDorsal was differentially inducibility in response to various PAMPs, suggesting its involvement in a specific innate immune regulation in E. sinensis.

• 出版日期2013-12
• 单位华东师范大学