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iTRAQ-Based Quantitative Proteomic Analysis of a Toxigenic Dinoflagellate Alexandrium catenella at Different Stages of Toxin Biosynthesis during the Cell Cycle
Zhang, Shu-Fei; Zhang, Yong2; Lin, Lin; Wang, Da-Zhi
2018-12-01
Source PublicationMARINE DRUGS
ISSN1660-3397
Volume16Issue:12
SubtypeArticle
AbstractParalytic shellfish toxins (PSTs) are a group of potent neurotoxic alkaloids that are produced mainly by marine dinoflagellates. PST biosynthesis in dinoflagellates is a discontinuous process that is coupled to the cell cycle. However, little is known about the molecular mechanism underlying this association. Here, we compared global protein expression profiles of a toxigenic dinoflagellate, Alexandrium catenella, collected at four different stages of toxin biosynthesis during the cell cycle, using an isobaric tags for relative and absolute quantification (iTRAQ)-based quantitative proteomic approach. The results showed that toxin biosynthesis occurred mainly in the G1 phase, especially the late G1 phase. In total, 7232 proteins were confidently identified, and 210 proteins exhibited differential expression among the four stages. Proteins involved in protein translation and photosynthetic pigment biosynthesis were significantly upregulated during toxin biosynthesis, indicating close associations among the three processes. Nine toxin-related proteins were detected, and two core toxin biosynthesis proteins, namely, sxtA and sxtI, were identified for the first time in dinoflagellates. Among these proteins, sxtI and ompR were significantly downregulated when toxin biosynthesis stopped, indicating that they played important roles in the regulation of PST biosynthesis. Our study provides new insights into toxin biosynthesis in marine dinoflagellates: nitrogen balance among different biological processes regulates toxin biosynthesis, and that glutamate might play a key modulatory role.
Keyworddinoflagellates Alexandrium catenella paralytic shellfish toxins cell cycle toxin biosynthesis quantitative proteomics iTRAQ
Subject AreaPharmacology & Pharmacy
DOI10.3390/md16120491
Indexed BySCIE
Language英语
WOS Research AreaChemistry, Medicinal
WOS IDWOS:000454726400032
PublisherMDPI
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/157508
Collection海洋生态与环境科学重点实验室
Affiliation1.Xiamen Univ, Coll Environm & Ecol, State Key Lab Marine Environm Sci, Xiamen 361000, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou 510300, Guangdong, Peoples R China
3.Xiamen Univ, Tan KahKee Coll, Sch Environm Sci & Engn, Zhangzhou 363105, Peoples R China
4.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Shu-Fei,Zhang, Yong,Lin, Lin,et al. iTRAQ-Based Quantitative Proteomic Analysis of a Toxigenic Dinoflagellate Alexandrium catenella at Different Stages of Toxin Biosynthesis during the Cell Cycle[J]. MARINE DRUGS,2018,16(12).
APA Zhang, Shu-Fei,Zhang, Yong,Lin, Lin,&Wang, Da-Zhi.(2018).iTRAQ-Based Quantitative Proteomic Analysis of a Toxigenic Dinoflagellate Alexandrium catenella at Different Stages of Toxin Biosynthesis during the Cell Cycle.MARINE DRUGS,16(12).
MLA Zhang, Shu-Fei,et al."iTRAQ-Based Quantitative Proteomic Analysis of a Toxigenic Dinoflagellate Alexandrium catenella at Different Stages of Toxin Biosynthesis during the Cell Cycle".MARINE DRUGS 16.12(2018).
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