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Zhao X, Zhang W, Zhang D, Liu X, Cao W, Chen Q, Ouyang Z, Xia Y. A lipidomic workflow capable of resolving sn- and C[double bond, length as m-dash]C location isomers of phosphatidylcholines. Chem Sci 2019; 10:10740-10748. [PMID: 32153749 PMCID: PMC7020929 DOI: 10.1039/c9sc03521d] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 10/04/2019] [Indexed: 01/01/2023] Open
Abstract
As a major class of mammalian lipids, phosphatidylcholines (PCs) often contain mixtures of structural isomers, resulting from different lipogenesis pathways. Profiling PCs at the isomer level, however, remains challenging in lipidomic settings, especially for characterizing the positions of fatty acyls on the glycerol backbone (sn-positions) and the locations of carbon-carbon double bonds (C[double bond, length as m-dash]Cs) in unsaturated acyl chains. In this work, we have developed a workflow for profiling PCs down to sn- and C[double bond, length as m-dash]C locations at high coverage and sensitivity. This capability is enabled by radical-directed fragmentation, forming sn-1 specific fragment ions upon collision-induced dissociation (CID) of bicarbonate anion adducts of PCs ([M + HCO3]-) inside a mass spectrometer. This new tandem mass spectrometry (MS/MS) method can be simply incorporated into liquid chromatography by employing ammonium bicarbonate in the mobile phase without any instrument modification needed. It is also compatible with the online Paternò-Büchì reaction and subsequent MS/MS for the assignment of C[double bond, length as m-dash]C locations in sn-1 fatty acyl chains of unsaturated PCs. The analytical performance of the workflow is manifested by identification of 82 distinct PC molecular species from the polar extract of bovine liver, including quantification of 19 pairs of sn-isomers. Finally, we demonstrate that five pairs of PC sn-isomers show significant compositional changes in tissue samples of human breast cancer relative to controls, suggesting a potential for monitoring PC sn-isomers for biomedical applications.
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Affiliation(s)
- Xue Zhao
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biological , Department of Chemistry , Tsinghua University , Beijing 100084 , China .
| | - Wenpeng Zhang
- Department of Chemistry , Purdue University , West Lafayette , IN 47907 , USA
| | - Donghui Zhang
- State Key Laboratory of Precision Measurement Technology and Instruments , Department of Precision Instrument , Tsinghua University , Beijing , 100084 , China
| | - Xinwei Liu
- State Key Laboratory of Precision Measurement Technology and Instruments , Department of Precision Instrument , Tsinghua University , Beijing , 100084 , China
| | - Wenbo Cao
- State Key Laboratory of Precision Measurement Technology and Instruments , Department of Precision Instrument , Tsinghua University , Beijing , 100084 , China
| | - Qinhua Chen
- Affiliated Dongfeng Hospital , Hubei University of Medicine , Shiyan , Hubei Province 442000 , China
| | - Zheng Ouyang
- State Key Laboratory of Precision Measurement Technology and Instruments , Department of Precision Instrument , Tsinghua University , Beijing , 100084 , China
| | - Yu Xia
- MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biological , Department of Chemistry , Tsinghua University , Beijing 100084 , China .
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Draft Genome Sequence of an Obligate Psychrophilic Yeast, Candida psychrophila NRRL Y-17665 T. GENOME ANNOUNCEMENTS 2017; 5:5/35/e00851-17. [PMID: 28860241 PMCID: PMC5578839 DOI: 10.1128/genomea.00851-17] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Candida psychrophila is an obligate psychrophilic yeast classified into the family Debaryomycetaceae (Saccharomycotina). Here, we report the draft genome sequence of the type strain, NRRL Y-17665. The genome sequence is 11.2 Mb long and codes for 5,827 predicted proteins.
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Xu W, Ge XD, Cheng DL, Shao R, Ding JF, Yan XH, Liu TT. Optimization of Epoxidized Methyl Acetoricinoleate Synthesis by Response Surface Methodology. Chem Eng Technol 2017. [DOI: 10.1002/ceat.201600044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wei Xu
- Yangcheng Institute of Technology; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland; 1st Avenue Road 224051 Yancheng China
| | - Xiao-Dong Ge
- Yangcheng Institute of Technology; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland; 1st Avenue Road 224051 Yancheng China
| | - De-Lin Cheng
- Yancheng Kanglinda Biotechnology Co., Ltd.; 1st Zhenxing Road, Magou Town 224056 Yancheng China
| | - Rong Shao
- Yangcheng Institute of Technology; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland; 1st Avenue Road 224051 Yancheng China
| | - Jian-Fei Ding
- Yangcheng Institute of Technology; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland; 1st Avenue Road 224051 Yancheng China
| | - Xiu-Hua Yan
- Yangcheng Institute of Technology; Jiangsu Key Laboratory of Biochemistry and Biotechnology of Marine Wetland; 1st Avenue Road 224051 Yancheng China
| | - Ting-Ting Liu
- Nantong University Pharmacy College; Department of Pharmacology; 19st Qixiu Road 226021 Nantong China
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Lipidomic analysis of psychrophilic yeasts cultivated at different temperatures. Biochim Biophys Acta Mol Cell Biol Lipids 2016; 1861:1634-1642. [DOI: 10.1016/j.bbalip.2016.07.005] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 06/20/2016] [Accepted: 07/11/2016] [Indexed: 11/20/2022]
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Kimura T, Jennings W, Epand RM. Roles of specific lipid species in the cell and their molecular mechanism. Prog Lipid Res 2016; 62:75-92. [PMID: 26875545 DOI: 10.1016/j.plipres.2016.02.001] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 02/04/2016] [Accepted: 02/10/2016] [Indexed: 12/19/2022]
Abstract
Thousands of different molecular species of lipids are present within a single cell, being involved in modulating the basic processes of life. The vast number of different lipid species can be organized into a number of different lipid classes, which may be defined as a group of lipids with a common chemical structure, such as the headgroup, apart from the nature of the hydrocarbon chains. Each lipid class has unique biological roles. In some cases, a relatively small change in the headgroup chemical structure can result in a drastic change in function. Such phenomena are well documented, and largely understood in terms of specific interactions with proteins. In contrast, there are observations that the entire structural specificity of a lipid molecule, including the hydrocarbon chains, is required for biological activity through specific interactions with membrane proteins. Understanding of these phenomena represents a fundamental change in our thinking of the functions of lipids in biology. There are an increasing number of diverse examples of roles for specific lipids in cellular processes including: Signal transduction; trafficking; morphological changes; cell division. We are gaining knowledge and understanding of the underlying molecular mechanisms. They are of growing importance in both basic and applied sciences.
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Affiliation(s)
- Tomohiro Kimura
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - William Jennings
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada
| | - Richard M Epand
- Department of Biochemistry and Biomedical Sciences, McMaster University, 1280 Main Street West, Hamilton, Ontario L8S 4K1, Canada.
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Svane S, Gorshkov V, Kjeldsen F. Charge inversion of phospholipids by dimetal complexes for positive ion-mode electrospray ionization mass spectrometry analysis. Anal Chem 2015; 87:8732-9. [PMID: 26189465 DOI: 10.1021/acs.analchem.5b01536] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Phospholipids are vital constituents of living cells, as they are involved in signaling and membrane formation. Mass spectrometry analysis of many phospholipids is preferentially performed in the negative ion-mode because of their acidic nature. Here we have studied the potential of a digallium and dizinc complex to charge-invert a range of different types of phospholipids and measured their ion yield and fragmentation behavior in positive ion-mode tandem mass spectrometry. The dimetal complexes bind specifically the phosphate groups of phospholipids and add an excess of up to three positive charges per phosphate group. Three different phosphoinositide phosphates (mono-, di-, and triphosphorylated inositides), a phosphatidic acid, a phosphatidylcholine, a phosphatidylethanolamine, and a phosphatidylglycerol were investigated. The intensities obtained in positive ion-mode of phosphoinositide phosphates and phosphatidic acid bound to {LGa2}(5+) were between 2.5- and 116-fold higher than that of the unmodified lipids in the negative ion-mode. Native phosphoinositide ions yielded upon CID in the negative ion-mode predominantly product ions due to losses of H3PO4, PO3(-) and H2O. In comparison, CID spectra of {LGa2}(5+)-bound phosphoinositides generally resulted in fragment ions corresponding to loss of the full diglyceride chain as well as the remaining headgroup bound to {LGa2}(5+) as the most abundant peaks. A number of signature fragment ions of moderate abundance were observed that allowed for distinction between the three regioisomers of 1,2-di(9Z-octadecenoyl)-sn-glycero-3-[phosphoinositol-x,y-bisphosphate] (PI(3,4)P2, PI(3,5)P2, PI(4,5)P2).
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Affiliation(s)
- Simon Svane
- Department of Biochemistry and Molecular Biology, ‡Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , 5230 Odense M, Denmark
| | - Vladimir Gorshkov
- Department of Biochemistry and Molecular Biology, ‡Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , 5230 Odense M, Denmark
| | - Frank Kjeldsen
- Department of Biochemistry and Molecular Biology, ‡Department of Physics, Chemistry and Pharmacy, University of Southern Denmark , 5230 Odense M, Denmark
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