Phosphoinositide 3-kinase family in channel catfish and their regulated expression after bacterial infection

Fish & Shellfish Immunology
Zhaoxia LiZhanjiang Liu

Abstract

The phosphoinositide-3-kinase (PI3Ks) family of lipid kinases is widely conserved from yeast to mammals. In this work, we identified a total of 14 members of the PI3Ks from the channel catfish genome and transcriptome and conducted phylogenetic and syntenic analyses of these genes. The expression profiles after infection with Edwardsiella ictaluri and Flavobacterium columnare were examined to determine the involvement of PI3Ks in immune responses after bacterial infection in catfish. The results indicated that PI3Ks genes including all of the catalytic subunit and several regulatory subunits genes were widely regulated after bacterial infection. The expression patterns were quite different when challenged with different bacteria. The PI3Ks were up-regulated rapidly at the early stage after ESC infection, but their induced expression was much slower, at the middle stage after columnaris infection. RNA-Seq datasets indicated that PI3K genes may be expressed at different levels in different catfish differing in their resistance levels against columnaris. Future studies are required to confirm and validate these observations. Taken together, this study indicated that PI3K genes may be involved as a part of the defense responses of ...Continue Reading

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Citations

Jun 30, 2016·Developmental and Comparative Immunology·Zihao YuanZhanjiang Liu
Sep 14, 2018·Frontiers in Physiology·Tao ZhouZhanjiang Liu

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