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Wang Z, Li M, Xu S, Sun L, Li L. High-throughput relative quantification of fatty acids by 12-plex isobaric labeling and microchip capillary electrophoresis - Mass spectrometry. Anal Chim Acta 2024; 1318:342905. [PMID: 39067909 PMCID: PMC11299455 DOI: 10.1016/j.aca.2024.342905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Accepted: 06/23/2024] [Indexed: 07/30/2024]
Abstract
BACKGROUND Fatty acids (FAs) are essential cellular components and play important roles in various biological processes. Importantly, FAs produced by microorganisms from renewable sugars are considered sustainable substrates for biodiesels and oleochemicals. Their complex structures and diverse functional roles in biochemical processes necessitate the development of efficient and accurate methods for their quantitative analysis. RESULTS Here, we developed a novel method for relative quantification of FAs by combining 12-plex isobaric N,N-dimethyl leucine-derivatized ethylenediamine (DiLeuEN) labeling and microchip capillary electrophoresis-mass spectrometry (CE-MS). This method enables simultaneous quantification of 12 samples in a single MS analysis. DiLeuEN labeling introduced tertiary amine center structure into FAs, which makes them compatible with the positive mode separation of commercial microchip CE systems and further improves the sensitivity. The CE separation parameters were optimized, and the quantification accuracy was assessed using FA standards. Microchip CE-MS detection exhibited high sensitivity with a femtomole level detection limit and a total analysis time within 8 min. Finally, the applicability of our method to complex biological samples was demonstrated by analyzing FAs produced by four industrially relevant yeast strains (Saccharomyces cerevisiae, Yarrowia lipolytica YB-432, Yarrowia lipolytica Po1f and Rhodotorula glutinis). The analysis time for each sample is less than 1 min. SIGNIFICANCE This work addresses the current challenges in the field by introducing a method that combines microchip-based capillary electrophoresis separation with multiplex isobaric labeling. Our method not only offers remarkable sensitivity and rapid analysis speed but also the capability to quantify fatty acids across multiple samples simultaneously, which holds significant potential for extensive application in FA quantitative studies in diverse research areas, promising an enhanced understanding of FA functions and mechanisms.
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Affiliation(s)
- Zicong Wang
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Miyang Li
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Shuling Xu
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Liang Sun
- Great Lakes Bioenergy Research Center, University of Wisconsin-Madison, Madison, WI, 53726, USA
| | - Lingjun Li
- School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA; Department of Chemistry, University of Wisconsin-Madison, Madison, WI, 53706, USA; Lachman Institute for Pharmaceutical Development, School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA; Wisconsin Center for NanoBioSystems, School of Pharmacy, University of Wisconsin-Madison, Madison, WI, 53705, USA.
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2
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Zaatouf L, Kumar K, Marcotte I, Warschawski DE. Assessment of membrane labelling mechanisms with exogenous fatty acids and detergents in bacteria. Biochimie 2024:S0300-9084(24)00134-2. [PMID: 38825063 DOI: 10.1016/j.biochi.2024.05.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Revised: 05/26/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
Labelling of bacterial membranes using exogenous fatty acids has proven to be a valuable tool to investigate molecular interactions by in-cell solid-state nuclear magnetic resonance (ssNMR) spectroscopy, notably with antimicrobial peptides. However, the mechanism by which this labelling takes place in non-mutated bacteria has not yet been investigated. In this work, we propose a rapid method to assess the fate of the fatty acids during the labelling of bacteria, involving two different methylation schemes and gas chromatography coupled to mass spectrometry. We applied this approach to Gram(+) and Gram(-) bacteria grown with deuterated palmitic acid under different conditions. We assessed the extent of labelling, then the resulting membrane rigidity by 2H ssNMR. Our results reveal that the labelling mechanism depends on the detergent used to micellize the fatty acids. This labelling can be either active or passive, whether the fatty acids are metabolized and used in the phospholipids biosynthesis, or remain unmodified in the membrane. We discuss the best labelling protocol for studying peptide-membrane interactions.
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Affiliation(s)
- Laila Zaatouf
- Laboratoire des Biomolécules, LBM, CNRS UMR 7203, Sorbonne Université, École normale supérieure, PSL University, 75005, Paris, France
| | - Kiran Kumar
- Departement of Chemistry, Université du Québec à Montréal, P.O. Box 8888, Downtown Station, Montreal, H3C 3P8, Canada
| | - Isabelle Marcotte
- Departement of Chemistry, Université du Québec à Montréal, P.O. Box 8888, Downtown Station, Montreal, H3C 3P8, Canada
| | - Dror E Warschawski
- Laboratoire des Biomolécules, LBM, CNRS UMR 7203, Sorbonne Université, École normale supérieure, PSL University, 75005, Paris, France.
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3
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Koch E, Löwen A, Schebb NH. Do meals contain a relevant amount of oxylipins? LC-MS-based analysis of oxidized fatty acids in food. Food Chem 2024; 438:137941. [PMID: 37995581 DOI: 10.1016/j.foodchem.2023.137941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 10/22/2023] [Accepted: 11/04/2023] [Indexed: 11/25/2023]
Abstract
Several oxylipins are potent lipid mediators and are discussed to be absorbed after oral intake. However, information about their concentrations in oils and processed foods are scarce. Here, we analyzed the concentrations of mono-, di- and multihydroxy- as well as epoxy-PUFA in virgin and refined oils as well as in different foods/meals. Oil refining causes hydrolysis of epoxy-PUFA and thus high dihydroxy-PUFA concentrations (e.g. 15,16-DiHODE 290 µg/g in refined vs. 15 µg/g in virgin rapeseed oil), making the epoxy-to-diol ratio a potential marker for refined oils. Low oxylipin levels were found in foods with high amounts of saturated fatty acids such as Hamburger patties (around 30 µg/g). High concentrations (up to 1200 µg/g, 80 mg per serving) and high oxylipin/precursor-PUFA ratios were found in fried falafel and processed foods such as vegetarian sausage/fish fingers. Our study provides first insights in the oxylipin concentrations of our daily food, indicating a relevant intake.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Ariane Löwen
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany.
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4
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Nilofar N, Zengin G, Acar M, Bouyayha A, Youssra A, Eldahshan O, Fayez S, Fahmy N. Assessing the Chemical Composition, Antioxidant and enzyme Inhibitory Effects of Pentapleura subulifera and Cyclotrichium glabrescens Extracts. Chem Biodivers 2024; 21:e202301651. [PMID: 38016080 DOI: 10.1002/cbdv.202301651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 11/28/2023] [Accepted: 11/28/2023] [Indexed: 11/30/2023]
Abstract
The Lamiaceae family, encompassing diverse plant species, holds significant value in food, medicine, and cosmetics. Within this family, Pentapleura subulifera and Cyclotrichium glabrescens, relatively unexplored species, were investigated for their chemical composition, antioxidant capacity, and enzyme-inhibiting effects. The chemical composition of hexane, methanolic, and aqueous extracts from P. subulifera and C. glabrescens were analyzed using LC-ESI-MS/MS and the non-polar hexane fraction was investigated via GC-MS. The antioxidant potential of the extracts was determined through radical scavenging, reducing power and metal chelating assays. Additionally, inhibitory activity against six enzymes - acetylcholinesterase (AChE), butyrylcholinesterase (BChE), tyrosinase, amylase, and glucosidase - was examined. The aqueous extract of P. subulifera and the methanolic extract of C. glabrescens exhibited elevated phenolic content at 129.47 mg gallic acid equivalent (GAE)/g and 55.97 mg GAE/g, respectively. Chemical profiling of the constituents of the two plant species resulted in the identification of a total of twenty compounds. The majority of which belonged to flavonoids and quinic acid derivatives, primarily concentrated in the methanol and aqueous extracts. Among all antioxidant assays, the aqueous extracts of P. subulifera demonstrated superior antioxidant activity, with the highest recorded activity of 404.93 mg trolox equivalent (TE)/g in the cupric reducing antioxidant capacity (CUPRAC) test. Meanwhile, the hexane extract of C. glabrescens exhibited the highest AChE inhibitory activity at 2.71 mg galanthamine equivalent (GALAE)/g, followed by the methanol extract of P. subulifera at 2.41 mg GALAE/g. These findings unequivocally establish the notable antioxidant and enzyme inhibitory activity of P. subulifera and C. glabrescens extracts, underscoring their potential as a source of valuable natural antioxidants.
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Affiliation(s)
- Nilofar Nilofar
- Physiology and Biochemistry Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
- Department of Pharmacy, Botanic Garden "Giardino dei Semplici", Università degli Studi "Gabriele d'Annunzio", via dei Vestini 31, 66100, Chieti, Italy
| | - Gokhan Zengin
- Physiology and Biochemistry Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | - Mikail Acar
- Munzur University, Department of Plant and Animal Production, Tunceli Vocational School of Higher Education, Tunceli, 62000, Turkey
| | - Abdelhakim Bouyayha
- Laboratory of Human Pathologies Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat, 10106, Morocco
| | - Aalilou Youssra
- Laboratory of Human Pathologies Biology, Faculty of Sciences, Mohammed V University in Rabat, Rabat, 10106, Morocco
| | - Omayma Eldahshan
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt
- Center of Drug Discovery Research and Development, Ain Shams University, Abbassia, Cairo, 11566, Egypt
| | - Shaimaa Fayez
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt
| | - Nouran Fahmy
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Abbassia, 11566, Cairo, Egypt
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5
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Gadara D, Berka V, Spacil Z. High-Throughput Microbore LC-MS Lipidomics to Investigate APOE Phenotypes. Anal Chem 2024; 96:59-66. [PMID: 38113351 PMCID: PMC10782415 DOI: 10.1021/acs.analchem.3c02652] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 11/13/2023] [Accepted: 11/16/2023] [Indexed: 12/21/2023]
Abstract
Microflow liquid chromatography interfaced with mass spectrometry (μLC-MS/MS) is increasingly applied for high-throughput profiling of biological samples and has been proven to have an acceptable trade-off between sensitivity and reproducibility. However, lipidomics applications are scarce. We optimized a μLC-MS/MS system utilizing a 1 mm inner diameter × 100 mm column coupled to a triple quadrupole mass spectrometer to establish a sensitive, high-throughput, and robust single-shot lipidomics workflow. Compared to conventional lipidomics methods, we achieve a ∼4-fold increase in response, facilitating quantification of 351 lipid species from a single iPSC-derived cerebral organoid during a 15 min LC-MS analysis. Consecutively, we injected 303 samples over ∼75 h to prove the robustness and reproducibility of the microflow separation. As a proof of concept, μLC-MS/MS analysis of Alzheimer's disease patient-derived iPSC cerebral organoid reveals differential lipid metabolism depending on APOE phenotype (E3/3 vs E4/4). Microflow separation proves to be an environmentally friendly and cost-effective method as it reduces the consumption of harmful solvents. Also, the data demonstrate robust, in-depth, high-throughput performance to enable routine clinical or biomedical applications.
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Affiliation(s)
- Darshak Gadara
- RECETOX
Centre, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Vratislav Berka
- RECETOX
Centre, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
| | - Zdenek Spacil
- RECETOX
Centre, Faculty of Science, Masaryk University, Brno 625 00, Czech Republic
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6
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Fayez S, Fahmy NM, Zengin G, Yagi S, Uba AI, Eldahshan OA, Koyuncu I, Temiz E, Dall'Acqua S, Sut S, Selvi S. LC-MS/MS and GC-MS profiling, antioxidant, enzyme inhibition, and antiproliferative activities of Thymus leucostomus H ausskn. & V elen. extracts. Arch Pharm (Weinheim) 2023; 356:e2300444. [PMID: 37754205 DOI: 10.1002/ardp.202300444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2023] [Revised: 09/11/2023] [Accepted: 09/12/2023] [Indexed: 09/28/2023]
Abstract
The chemical composition as well as antioxidant, antiproliferative, and enzyme inhibition activities of extracts from aerial parts of Thymus leucostomus H ausskn. & V elen. obtained with hexane, methanol, and water were evaluated. Results showed that the methanol extract had significantly (p < 0.05) the highest total phenolic content (TPC; 107.80 mg GAE/g) and total flavonoids content (TFC; 25.21 mg RE/g) followed by the aqueous extract (102.72 mg GAE/g and 20.88 mg RE/g, respectively). LC-MS/MS-guided profiling of the three extracts revealed that rosmarinic acid (34.8%), hesperetin (42.9%), and linoleic acid (18%) were the dominant compounds in the methanol, aqueous and hexane extracts, respectively. GC-MS analysis of the hexane extract showed that ɣ-sitosterol (29.9%) was the major constituent. The methanol extract displayed significantly (p < 0.05) the highest Cu++ , Fe+++ , and Mo(VI) ions scavenging and reducing properties while the aqueous extract exerted significantly (p < 0.05) the highest metal chelating power (42.51 mg EDTAE/g). Both the hexane and methanol extracts effectively inhibited the acetylcholinesterase enzyme (2.63 and 2.65 mg GALAE/g, respectively) while the former extract exerted significantly (p < 0.05) the highest butyrylcholinesterase (2.32 mg GALAE/g), tyrosinase (19.73 mg KAE/g), and amylase (1.16 mmol ACAE/g) inhibition capacity. The aqueous extract exhibited the best glucosidase inhibition property (0.49 mmol ACAE/g). The methanol and hexane extracts exerted a higher cytotoxic effect on HT-29 (IC50 : 8.12 µg/mL) and HeLa (IC50 = 8.08 µg/mL) cells, respectively. In conclusion, these results provide valuable insight into the potential use of T. leucostomus bioactive extracts in different pharmaceutical applications.
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Affiliation(s)
- Shaimaa Fayez
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Abbassia, Egypt
| | - Nouran M Fahmy
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Abbassia, Egypt
| | - Gokhan Zengin
- Physiology and Biochemistry Laboratory, Department of Biology, Science Faculty, Selcuk University, Konya, Turkey
| | - Sakina Yagi
- Department of Botany, Faculty of Science, University of Khartoum, Khartoum, Sudan
| | - Abdullahi Ibrahim Uba
- Department of Molecular Biology and Genetics, Istanbul AREL University, Istanbul, Turkey
| | - Omayma A Eldahshan
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Cairo, Abbassia, Egypt
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University, Centre of Drug Discovery Research and Development, Ain Shams University, Cairo, Abbassia, Egypt
| | - Ismail Koyuncu
- Department of Medical Biochemistry, Faculty of Medicine, Harran University, Sanliurfa, Turkey
| | - Ebru Temiz
- Program of Medical Promotion and Marketing, Health Services Vocational School, Harran University, Sanliurfa, Turkey
| | - Stefano Dall'Acqua
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Stefania Sut
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Selami Selvi
- Department of Plant and Animal Production, Altınoluk Vocational School, Balıkesir University, Balıkesir, Turkey
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7
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Tietel Z, Hammann S, Meckelmann SW, Ziv C, Pauling JK, Wölk M, Würf V, Alves E, Neves B, Domingues MR. An overview of food lipids toward food lipidomics. Compr Rev Food Sci Food Saf 2023; 22:4302-4354. [PMID: 37616018 DOI: 10.1111/1541-4337.13225] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 06/20/2023] [Accepted: 07/27/2023] [Indexed: 08/25/2023]
Abstract
Increasing evidence regarding lipids' beneficial effects on human health has changed the common perception of consumers and dietary officials about the role(s) of food lipids in a healthy diet. However, lipids are a wide group of molecules with specific nutritional and bioactive properties. To understand their true nutritional and functional value, robust methods are needed for accurate identification and quantification. Specific analytical strategies are crucial to target specific classes, especially the ones present in trace amounts. Finding a unique and comprehensive methodology to cover the full lipidome of each foodstuff is still a challenge. This review presents an overview of the lipids nutritionally relevant in foods and new trends in food lipid analysis for each type/class of lipids. Food lipid classes are described following the LipidMaps classification, fatty acids, endocannabinoids, waxes, C8 compounds, glycerophospholipids, glycerolipids (i.e., glycolipids, betaine lipids, and triglycerides), sphingolipids, sterols, sercosterols (vitamin D), isoprenoids (i.e., carotenoids and retinoids (vitamin A)), quinones (i.e., coenzyme Q, vitamin K, and vitamin E), terpenes, oxidized lipids, and oxylipin are highlighted. The uniqueness of each food group: oil-, protein-, and starch-rich, as well as marine foods, fruits, and vegetables (water-rich) regarding its lipid composition, is included. The effect of cooking, food processing, and storage, in addition to the importance of lipidomics in food quality and authenticity, are also discussed. A critical review of challenges and future trends of the analytical approaches and computational methods in global food lipidomics as the basis to increase consumer awareness of the significant role of lipids in food quality and food security worldwide is presented.
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Affiliation(s)
- Zipora Tietel
- Department of Food Science, Gilat Research Center, Agricultural Research Organization, Volcani Institute, M.P. Negev, Israel
| | - Simon Hammann
- Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Sven W Meckelmann
- Applied Analytical Chemistry, University of Duisburg-Essen, Essen, Germany
| | - Carmit Ziv
- Department of Postharvest Science, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Josch K Pauling
- LipiTUM, Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich (TUM), Freising, Germany
| | - Michele Wölk
- Lipid Metabolism: Analysis and Integration; Center of Membrane Biochemistry and Lipid Research; Faculty of Medicine Carl Gustav Carus, Technical University Dresden, Dresden, Germany
| | - Vivian Würf
- LipiTUM, Chair of Experimental Bioinformatics, TUM School of Life Sciences, Technical University of Munich (TUM), Freising, Germany
| | - Eliana Alves
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, Santiago University Campus, University of Aveiro, Aveiro, Portugal
| | - Bruna Neves
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, Santiago University Campus, University of Aveiro, Aveiro, Portugal
- Centre for Environmental and Marine Studies, CESAM, Department of Chemistry, Santiago University Campus, University of Aveiro, Aveiro, Portugal
| | - M Rosário Domingues
- Mass Spectrometry Centre, LAQV-REQUIMTE, Department of Chemistry, Santiago University Campus, University of Aveiro, Aveiro, Portugal
- Centre for Environmental and Marine Studies, CESAM, Department of Chemistry, Santiago University Campus, University of Aveiro, Aveiro, Portugal
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8
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Ng DZW, Lee SXY, Ooi DSQ, Ta LDH, Yap GC, Tay CJX, Huang CH, Tham EH, Loo EXL, Shek LPC, Goh A, Bever HPSV, Teoh OH, Lee YS, Yap F, Tan KH, Chong YS, Chan SY, Eriksson JG, Godfrey KM, Lee BW, Chan ECY. Sensitive LC-MS/MS method for the temporal profiling of bile acids, fatty acids and branched-chain alpha-keto acids in maternal plasma during pregnancy and cord blood plasma at delivery. Clin Chim Acta 2023:117449. [PMID: 37331549 DOI: 10.1016/j.cca.2023.117449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 05/22/2023] [Accepted: 06/13/2023] [Indexed: 06/20/2023]
Abstract
BACKGROUND AND AIMS There are significant changes to the maternal inflammatory profile across pregnancy. Recent studies suggest that perturbations in maternal gut microbial and dietary-derived plasma metabolites over the course of pregnancy mediate inflammation through a complex interplay of immunomodulatory effects. Despite this body of evidence, there is currently no analytical method that is suitable for the simultaneous profiling of these metabolites within human plasma. MATERIALS AND METHODS We developed a liquid chromatography-tandem mass spectrometry (LC-MS/MS) method for the high-throughput analysis of these metabolites in human plasma without derivatization. Plasma samples were processed using liquid-liquid extraction method with varying proportions of methyl tert-butyl ether, methanol, and water in a 3:10:2.5 ratio to reduce matrix effects. RESULTS LC-MS/MS detection was sufficiently sensitive to quantify these gut microbial and dietary-derived metabolites at physiological concentrations and linear calibration curves with r2>0.99 were obtained. Recovery was consistent across concentration levels. Stability experiments confirmed that up to 160 samples could be analyzed within a single batch. The method was validated and applied to analyse maternal plasma during the first and third trimester and cord blood plasma of 5 mothers. CONCLUSION This study validated a straightforward and sensitive LC/MS-MS method for the simultaneous quantitation of gut microbial and dietary-derived metabolites in human plasma within 9 minutes without prior sample derivatization.
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Affiliation(s)
- Daniel Zhi Wei Ng
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543
| | - Sean Xian Yu Lee
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543
| | - Delicia Shu Qin Ooi
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228
| | - Le Duc Huy Ta
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228
| | - Gaik Chin Yap
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228
| | - Carina Jing Xuan Tay
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228
| | - Chiung-Hui Huang
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228
| | - Elizabeth Huiwen Tham
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228; Division of Allergy & Immunology, Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore, Singapore
| | - Evelyn Xiu Ling Loo
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228; Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Lynette P C Shek
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228; Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Anne Goh
- Department of Paediatrics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Hugo P S Van Bever
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228; Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Oon Hoe Teoh
- Department of Paediatrics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Yung Seng Lee
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228; Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore; Division of Paediatric Endocrinology and Diabetes, Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore, Singapore
| | - Fabian Yap
- Department of Paediatrics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Kok Hian Tan
- Department of Paediatrics, KK Women's and Children's Hospital, Singapore, Singapore
| | - Yap-Seng Chong
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore; Department of Obstetrics & Gynaecology, National University of Singapore, Singapore
| | - Shiao Yng Chan
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore; Department of Obstetrics & Gynaecology, National University of Singapore, Singapore
| | - Johan Gunnar Eriksson
- Singapore Institute for Clinical Sciences (SICS), Agency for Science, Technology and Research (A*STAR), Singapore, Singapore; Department of Obstetrics & Gynaecology, National University of Singapore, Singapore; Folkhälsan Research Center, Helsinki, Finland and Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland; Department of General Practice and Primary Health Care, University of Helsinki, Helsinki, Finland
| | - Keith M Godfrey
- MRC Lifecourse Epidemiology Centre and NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Bee Wah Lee
- Department of Paediatrics, National University of Singapore, Yong Loo Lin School of Medicine, 1E Kent Ridge Road, NUHS Tower Block, Level 12, Singapore 119228.
| | - Eric Chun Yong Chan
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore 117543.
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9
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Koch E, Löwen A, Nikolay S, Willenberg I, Schebb NH. Trans-Hydroxy, Trans-Epoxy, and Erythro-dihydroxy Fatty Acids Increase during Deep-Frying. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:7508-7513. [PMID: 37141304 DOI: 10.1021/acs.jafc.3c00964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Deep-frying of food is a common cooking technique causing thermal oxidation of fatty acids (FA). Here, we investigated for the first time the formation of hydroxy-, epoxy- and dihydroxy-FA derived from oleic, linoleic (LA), and α-linolenic acid (ALA) during frying. Potato chips were fried in high-oleic sunflower oil for 4 × 5 cycles on 2 days, and the oil was comprehensively analyzed by liquid chromatography-tandem mass spectrometry. During frying, the E,Z-9- and E,Z-13-hydroperoxy-LA and -ALA concentrations decrease while their corresponding hydroxy-FA remain constant. The concentrations of both E,E-9-/13-hydroperoxy-LA and E,E-9-/13-hydroxy-LA increase with the frying cycles, which is also found for the concentration of trans-epoxy-FA. The increase in trans-epoxy-FA is more pronounced than that of the corresponding cis-epoxy-FA, exceeding their concentrations on the second day of frying. This selective change in the cis-/trans-epoxy-FA ratio is also observed for their hydrolysis products: concentrations of erythro-dihydroxy-FA, derived from trans-epoxy-FA, increase during frying stronger than threo-dihydroxy-FA derived from cis-epoxy-FA. Based on these data, we suggest that the ratio of E,E-/E,Z-hydroxy-FA, in combination with the cis-/trans-epoxy-FA ratio, as well as the threo-/erythro-dihydroxy-FA ratio are promising new parameters to evaluate the heating of edible oils and to characterize the status of frying oils.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Ariane Löwen
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Sharline Nikolay
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI)─Federal Research Institute of Nutrition and Food, Schützenberg 12, 32756 Detmold, Germany
| | - Ina Willenberg
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI)─Federal Research Institute of Nutrition and Food, Schützenberg 12, 32756 Detmold, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
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10
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Richter FC, Friedrich M, Kampschulte N, Piletic K, Alsaleh G, Zummach R, Hecker J, Pohin M, Ilott N, Guschina I, Wideman SK, Johnson E, Borsa M, Hahn P, Morriseau C, Hammock BD, Schipper HS, Edwards CM, Zechner R, Siegmund B, Weidinger C, Schebb NH, Powrie F, Simon AK. Adipocyte autophagy limits gut inflammation by controlling oxylipin and IL-10. EMBO J 2023; 42:e112202. [PMID: 36795015 PMCID: PMC10015370 DOI: 10.15252/embj.2022112202] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 02/17/2023] Open
Abstract
Lipids play a major role in inflammatory diseases by altering inflammatory cell functions, either through their function as energy substrates or as lipid mediators such as oxylipins. Autophagy, a lysosomal degradation pathway that limits inflammation, is known to impact on lipid availability, however, whether this controls inflammation remains unexplored. We found that upon intestinal inflammation visceral adipocytes upregulate autophagy and that adipocyte-specific loss of the autophagy gene Atg7 exacerbates inflammation. While autophagy decreased lipolytic release of free fatty acids, loss of the major lipolytic enzyme Pnpla2/Atgl in adipocytes did not alter intestinal inflammation, ruling out free fatty acids as anti-inflammatory energy substrates. Instead, Atg7-deficient adipose tissues exhibited an oxylipin imbalance, driven through an NRF2-mediated upregulation of Ephx1. This shift reduced secretion of IL-10 from adipose tissues, which was dependent on the cytochrome P450-EPHX pathway, and lowered circulating levels of IL-10 to exacerbate intestinal inflammation. These results suggest an underappreciated fat-gut crosstalk through an autophagy-dependent regulation of anti-inflammatory oxylipins via the cytochrome P450-EPHX pathway, indicating a protective effect of adipose tissues for distant inflammation.
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Affiliation(s)
| | - Matthias Friedrich
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
- Translational Gastroenterology Unit, Nuffield Department of Medicine, John Radcliffe HospitalUniversity of OxfordOxfordUK
| | - Nadja Kampschulte
- Faculty of Mathematics and Natural SciencesUniversity of WuppertalWuppertalGermany
| | - Klara Piletic
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Ghada Alsaleh
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | | | - Julia Hecker
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin and Berlin Institute of HealthBerlinGermany
- Department of Gastroenterology, Infectious Diseases and RheumatologyCampus Benjamin FranklinBerlinGermany
| | - Mathilde Pohin
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Nicholas Ilott
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | | | - Sarah Karin Wideman
- MRC Human Immunology Unit, MRC Weatherall Institute of Molecular Medicine, John Radcliffe HospitalUniversity of OxfordOxfordUK
| | - Errin Johnson
- The Dunn School of PathologyUniversity of OxfordOxfordUK
| | - Mariana Borsa
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Paula Hahn
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Christophe Morriseau
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer CenterUniversity of CaliforniaDavisCAUSA
| | - Bruce D Hammock
- Department of Entomology and Nematology, UC Davis Comprehensive Cancer CenterUniversity of CaliforniaDavisCAUSA
| | - Henk Simon Schipper
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
- Center for Translational ImmunologyUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Claire M Edwards
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research CentreUniversity of OxfordOxfordUK
- Nuffield Department of Surgical Sciences, Botnar Research CentreUniversity of OxfordOxfordUK
| | - Rudolf Zechner
- Institute of Molecular BiosciencesUniversity of GrazGrazAustria
| | - Britta Siegmund
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin and Berlin Institute of HealthBerlinGermany
- Department of Gastroenterology, Infectious Diseases and RheumatologyCampus Benjamin FranklinBerlinGermany
| | - Carl Weidinger
- Charité – Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt‐Universität zu Berlin and Berlin Institute of HealthBerlinGermany
- Department of Gastroenterology, Infectious Diseases and RheumatologyCampus Benjamin FranklinBerlinGermany
| | - Nils Helge Schebb
- Faculty of Mathematics and Natural SciencesUniversity of WuppertalWuppertalGermany
| | - Fiona Powrie
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
| | - Anna Katharina Simon
- Kennedy Institute of RheumatologyUniversity of OxfordOxfordUK
- Max Delbrück CenterBerlinGermany
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11
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Lipidomics analysis in drug discovery and development. Curr Opin Chem Biol 2023; 72:102256. [PMID: 36586190 DOI: 10.1016/j.cbpa.2022.102256] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/08/2022] [Accepted: 11/28/2022] [Indexed: 12/30/2022]
Abstract
Despite being a relatively new addition to the Omics' landscape, lipidomics is increasingly being recognized as an important tool for the identification of druggable targets and biochemical markers. In this review we present recent advances of lipid analysis in drug discovery and development. We cover current state of the art technologies which are constantly evolving to meet demands in terms of sensitivity and selectivity. A careful selection of important examples is then provided, illustrating the versatility of lipidomics analysis in the drug discovery and development process. Integration of lipidomics with other omics', stem-cell technologies, and metabolic flux analysis will open new avenues for deciphering pathophysiological mechanisms and the discovery of novel targets and biomarkers.
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12
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Co-pyrolysis of Soursop (Annona muricata) and Mango (Mangifera indica) Seeds: A Route to High-Quality Bio-oil. CHEMISTRY AFRICA 2022. [DOI: 10.1007/s42250-022-00536-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Koch E, Wiebel M, Löwen A, Willenberg I, Schebb NH. Characterization of the Oxylipin Pattern and Other Fatty Acid Oxidation Products in Freshly Pressed and Stored Plant Oils. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:12935-12945. [PMID: 36173729 DOI: 10.1021/acs.jafc.2c04987] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Enzymatic and nonenzymatic oxidation of linoleic (LA) and α-linolenic acid (ALA) during pressing and storage of plant oils leads to a variety of oxylipins. We pressed oils from flaxseeds, rapeseeds, and sunflower seeds and analyzed the oxylipin pattern in freshly pressed oils. 9-/13-Hydro(pero)xy-LA/-ALA occurred in high concentration resulting probably from lipoxygenase-catalyzed reactions as well as autoxidation and photooxidation. However, in flaxseed and rapeseed oil, the highest concentrations were found for the terminal epoxy-ALA (15(16)-EpODE) and the hardly known 15-hydroxy-LA (15-HODE, 80 mg/100 g in flaxseed oil). Oils were stored for 6 months and the peroxide value (PV) as well as oxylipin and secondary volatile aldehyde concentrations were determined. While lipid peroxidation in flaxseed oil was surprisingly low, the oxylipin concentration and PV massively increased in rapeseed oil dependent on oxygen availability. Oxylipin concentrations correlated well with the PV, while secondary volatile aldehydes did not reflect the changes of oxylipins and PVs. The comprehensive analysis of hydroxy-, epoxy-, and dihydroxy-LA/-ALA reveals new and unique insights into the composition of plant oils and ongoing oxidation processes.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Michelle Wiebel
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Ariane Löwen
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Ina Willenberg
- Department of Safety and Quality of Cereals, Max Rubner-Institut (MRI) - Federal Research Institute of Nutrition and Food, Schützenberg 12, 32756 Detmold, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
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14
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Görs PE, Wittenhofer P, Ayala-Cabrera JF, Meckelmann SW. Potential of atmospheric pressure ionization sources for the analysis of free fatty acids in clinical and biological samples by gas chromatography-mass spectrometry. Anal Bioanal Chem 2022; 414:6621-6634. [PMID: 35851410 PMCID: PMC9411222 DOI: 10.1007/s00216-022-04223-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 06/17/2022] [Accepted: 07/05/2022] [Indexed: 11/26/2022]
Abstract
Because of the central role of fatty acids in biological systems, their accurate quantification is still important. However, the impact of the complex matrix of biologically and clinically relevant samples such as plasma, serum, or cells makes the analysis still challenging, especially, when free non-esterified fatty acids have to be quantified. Here we developed and characterized a novel GC–MS method using pentafluorobenzyl bromide as a derivatization agent and compared different ionization techniques such as atmospheric pressure chemical ionization (APCI), atmospheric pressure chemical photoionization (APPI), and negative ion chemical ionization (NICI). The GC-APCI-MS showed the lowest limits of detection from 30 to 300 nM for a broad range of fatty acids and a similar response for various fatty acids from a chain length of 10 to 20 carbon atoms. This allows the number of internal standards necessary for accurate quantification to be reduced. Moreover, the use of pentafluorobenzyl bromide allows the direct derivatization of free fatty acids making them accessible for GC–MS analysis without labor-intense sample pretreatment.
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Affiliation(s)
- Paul E Görs
- Applied Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany
| | - Pia Wittenhofer
- Applied Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany
| | - Juan F Ayala-Cabrera
- Applied Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany
| | - Sven W Meckelmann
- Applied Analytical Chemistry, University of Duisburg-Essen, Universitätsstrasse 5, 45141, Essen, Germany.
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15
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Koch E, Kampschulte N, Schebb NH. Comprehensive Analysis of Fatty Acid and Oxylipin Patterns in n3-PUFA Supplements. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3979-3988. [PMID: 35324176 DOI: 10.1021/acs.jafc.1c07743] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Supplementing long-chain omega-3 polyunsaturated fatty acids (n3-PUFA) improves health. We characterized the pattern of total and non-esterified oxylipins and fatty acids in n3 supplements made of fish, krill, or micro-algae oil by LC-MS. All supplements contained the declared amount of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA); however, their content per capsule and the concentration of other fatty acids varied strongly. Krill oil contained the highest total n3 oxylipin concentration (6000 nmol/g) and the highest degree of oxidation (EPA 0.7%; DHA 1.3%), while micro-algae oil (Schizochytrium sp.) showed the lowest oxidation (<0.09%). These oils contain specifically high amounts of the terminal hydroxylation product of EPA (20-HEPE, 300 nmol/g) and DHA (22-HDHA, 200 nmol/g), which can serve as an authenticity marker for micro-algae oil. Refined micro-algae and fish oil were characterized by NEFA levels of ≤0.1%. Overall, the oxylipin and fatty acid pattern allows gaining new insights into the origin and quality of n3-PUFA oils in supplements.
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Affiliation(s)
- Elisabeth Koch
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Nadja Kampschulte
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
| | - Nils Helge Schebb
- Chair of Food Chemistry, Faculty of Mathematics and Natural Sciences, University of Wuppertal, Gaussstrasse 20, 42119 Wuppertal, Germany
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