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Dellero Y, Filangi O, Bouchereau A. Evaluation of GC/MS-Based 13C-Positional Approaches for TMS Derivatives of Organic and Amino Acids and Application to Plant 13C-Labeled Experiments. Metabolites 2023; 13:metabo13040466. [PMID: 37110124 PMCID: PMC10142191 DOI: 10.3390/metabo13040466] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/20/2023] [Accepted: 03/20/2023] [Indexed: 04/29/2023] Open
Abstract
Analysis of plant metabolite 13C-enrichments with gas-chromatography mass spectrometry (GC/MS) has gained interest recently. By combining multiple fragments of a trimethylsilyl (TMS) derivative, 13C-positional enrichments can be calculated. However, this new approach may suffer from analytical biases depending on the fragments selected for calculation leading to significant errors in the final results. The goal of this study was to provide a framework for the validation of 13C-positional approaches and their application to plants based on some key metabolites (glycine, serine, glutamate, proline, α-alanine and malate). For this purpose, we used tailor-made 13C-PT standards, harboring known carbon isotopologue distributions and 13C-positional enrichments, to evaluate the reliability of GC-MS measurements and positional calculations. Overall, we showed that some mass fragments of proline_2TMS, glutamate_3TMS, malate_3TMS and α-alanine_2TMS had important biases for 13C measurements resulting in significant errors in the computational estimation of 13C-positional enrichments. Nevertheless, we validated a GC/MS-based 13C-positional approach for the following atomic positions: (i) C1 and C2 of glycine_3TMS, (ii) C1, C2 and C3 of serine_3TMS, and (iii) C1 of malate_3TMS and glutamate_3TMS. We successfully applied this approach to plant 13C-labeled experiments for investigating key metabolic fluxes of plant primary metabolism (photorespiration, tricarboxylic acid cycle and phosphoenolpyruvate carboxylase activity).
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Affiliation(s)
- Younès Dellero
- Institute for Genetics, Environment and Plant Protection (IGEPP), National Research Institute for Agriculture, Food and Environment (INRAE), Institut Agro, Université Rennes, 35650 Le Rheu, France
- Metabolic Profiling and Metabolomic Platform (P2M2), Biopolymers Interactions Assemblies, Institute for Genetics, Environment and Plant Protection, 35650 Le Rheu, France
- MetaboHUB, National Infrastructure of Metabolomics and Fluxomics, 35650 Le Rheu, France
| | - Olivier Filangi
- Institute for Genetics, Environment and Plant Protection (IGEPP), National Research Institute for Agriculture, Food and Environment (INRAE), Institut Agro, Université Rennes, 35650 Le Rheu, France
- Metabolic Profiling and Metabolomic Platform (P2M2), Biopolymers Interactions Assemblies, Institute for Genetics, Environment and Plant Protection, 35650 Le Rheu, France
- MetaboHUB, National Infrastructure of Metabolomics and Fluxomics, 35650 Le Rheu, France
| | - Alain Bouchereau
- Institute for Genetics, Environment and Plant Protection (IGEPP), National Research Institute for Agriculture, Food and Environment (INRAE), Institut Agro, Université Rennes, 35650 Le Rheu, France
- Metabolic Profiling and Metabolomic Platform (P2M2), Biopolymers Interactions Assemblies, Institute for Genetics, Environment and Plant Protection, 35650 Le Rheu, France
- MetaboHUB, National Infrastructure of Metabolomics and Fluxomics, 35650 Le Rheu, France
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Etalo DW, De Vos RCH, Joosten MHAJ, Hall RD. Spatially Resolved Plant Metabolomics: Some Potentials and Limitations of Laser-Ablation Electrospray Ionization Mass Spectrometry Metabolite Imaging. PLANT PHYSIOLOGY 2015; 169:1424-35. [PMID: 26392264 PMCID: PMC4634093 DOI: 10.1104/pp.15.01176] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 09/20/2015] [Indexed: 05/19/2023]
Abstract
Laser-ablation electrospray ionization (LAESI)-mass spectrometry imaging has been applied to contrasting plant organs to assess its potential as a procedure for performing in vivo metabolomics in plants. In a proof-of-concept experiment, purple/white segmented Phalaenopsis spp. petals were first analyzed using standard liquid chromatography-mass spectrometry analyses of separate extracts made specifically from the purple and white regions. Discriminatory compounds were defined and putatively annotated. LAESI analyses were then performed on living tissues, and these metabolites were then relocalized within the LAESI-generated data sets of similar tissues. Maps were made to illustrate their locations across the petals. Results revealed that, as expected, anthocyanins always mapped to the purple regions. Certain other (nonvisible) polyphenols were observed to colocalize with the anthocyanins, whereas others were found specifically within the white tissues. In a contrasting example, control and Cladosporium fulvum-infected tomato (Solanum lycopersicum) leaves were subjected to the same procedures, and it could be observed that the alkaloid tomatine has clear heterogeneous distribution across the tomato leaf lamina. Furthermore, LAESI analyses revealed perturbations in alkaloid content following pathogen infection. These results show the clear potential of LAESI-based imaging approaches as a convenient and rapid way to perform metabolomics analyses on living tissues. However, a range of limitations and factors have also been identified that must be taken into consideration when interpreting LAESI-derived data. Such aspects deserve further evaluation before this approach can be applied in a routine manner.
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Affiliation(s)
- Desalegn W Etalo
- Laboratory of Plant Physiology (D.W.E., R.D.H.), Plant Research International Bioscience (D.W.E., R.C.H.D.V., R.D.H.), and Laboratory of Phytopathology (M.H.A.J.J.), Wageningen University, 6708 PB, Wageningen, The Netherlands
| | - Ric C H De Vos
- Laboratory of Plant Physiology (D.W.E., R.D.H.), Plant Research International Bioscience (D.W.E., R.C.H.D.V., R.D.H.), and Laboratory of Phytopathology (M.H.A.J.J.), Wageningen University, 6708 PB, Wageningen, The Netherlands
| | - Matthieu H A J Joosten
- Laboratory of Plant Physiology (D.W.E., R.D.H.), Plant Research International Bioscience (D.W.E., R.C.H.D.V., R.D.H.), and Laboratory of Phytopathology (M.H.A.J.J.), Wageningen University, 6708 PB, Wageningen, The Netherlands
| | - Robert D Hall
- Laboratory of Plant Physiology (D.W.E., R.D.H.), Plant Research International Bioscience (D.W.E., R.C.H.D.V., R.D.H.), and Laboratory of Phytopathology (M.H.A.J.J.), Wageningen University, 6708 PB, Wageningen, The Netherlands
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Quan-Jun Y, Jun B, Li-Li W, Yong-Long H, Bin L, Qi Y, Yan L, Cheng G, Gen-Jin Y. NMR-based metabolomics reveals distinct pathways mediated by curcumin in cachexia mice bearing CT26 tumor. RSC Adv 2015. [DOI: 10.1039/c4ra14128h] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Cachexia is common in cancer patients, with profound metabolic abnormalities in response to malignant growth of cancer and progressive catabolism of host.
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Affiliation(s)
- Yang Quan-Jun
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
- School of Pharmacy
| | - Bian Jun
- Department of Pharmacy
- Shanghai
- P. R. China
| | - Wan Li-Li
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
| | - Han Yong-Long
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
| | - Li Bin
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
| | - Yu Qi
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
| | - Li Yan
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
| | - Guo Cheng
- Department of Pharmacy
- Shanghai Jiao Tong University Affiliated Sixth People's Hospital
- Shanghai 200233
- P. R. China
- School of Pharmacy
| | - Yang Gen-Jin
- School of Pharmacy
- Second Military Medical University
- Shanghai 200433
- P. R. China
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