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Identification and Expression of PPAR in Sinonovacula constricta and Their Potential Regulatory Effects on Δ6 Fad Transcription

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Journal of Ocean University of China 2021年第6期20卷 1557-1566页

作者： RAN Zhaoshou KONG Fei LIAO Kai XU Jilin LIU Xingwang SHI Peng ZHANG Mengqi WU Kaibin YAN Xiaojun Key Laboratory of Applied Marine Biotechnology Ningbo UniversityMinistry of Education of ChinaNingbo 315211China Collaborative Innovation Center for Zhejiang Marine High-Efficiency and Healthy Aquaculture Ningbo UniversityNingbo 315211China Fujian Baozhi Aquatic Science and Technology Co. Ltd.Zhangzhou 363503China National and Local Joint Engineering Laboratory of Marine Biotechnology and Engineering Ningbo 315211China Key Laboratory of Marine Biological Engineering Ningbo 315211China Evergreen Feed Co. Ltd.Ningbo 315211China

Peroxisome proliferator activated receptors(PPAR)are kinds of key transcriptional factors in regulating LC-PUFA *** now,little is known about PPAR in marine molluscs as well as in other *** constricta is the first marine mollusc that is proved to possess the complete LC-PUFA biosynthetic pathway,and it can be a perfect representative to clarify this *** this study,the molecular properties of *** PPAR were characterized,and corresponding potential regulatory roles in ***Δ6 fatty acyl desaturase(Fad)transcription were estimated by dual luciferase *** showed that two PPAR homologs(PPAR_a and_b)were identified in *** both contain typical features of vertebrate PPAR,suggesting highly conserved functional regions in *** phylogenetic comparison,they are clearly different with vertebrate PPAR and can be divided into two distinctive ***,they show a high expression level in gill,labial palps,mantle and *** down-regulated expressions in trochophore larva and veliger larva might be attributed to ***,the transcriptional activity of ***Δ6 Fad promoter was significantly activated by both PPAR_a and_b,indicating that *** PPAR might play a role in the regulation of LC-PUFA *** our knowledge,this is the first systematic analysis of PPAR in a marine *** results will provide a valuable reference for further researches on the function of marine molluscan PPAR and their underlying mechanisms in regulating LC-PUFA biosynthesis.

关键词： Sinonovacula constricta peroxisome proliferator activated receptors Δ6 fatty acyl desaturase long chain-polyunsaturated fatty acids

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