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Gitta S, Szabó É, Sulc A, Czétány P, Máté G, Balló A, Csabai T, Szántó Á, Márk L. Investigation of Phosphatidylcholine by MALDI Imaging Mass Spectrometry in Normal and IVF Early-Stage Embryos. Int J Mol Sci 2024; 25:7423. [PMID: 39000535 PMCID: PMC11242196 DOI: 10.3390/ijms25137423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2024] [Revised: 06/25/2024] [Accepted: 06/29/2024] [Indexed: 07/16/2024] Open
Abstract
The receptive phase of the uterus is marked by structural and functional maturation of the endometrium. During this limited time span, the blastocyst competency is superimposed on the receptive endometrium. It is a well-known fact that lipid signalling in early-stage pregnancy has a crucial role in successful embryogenesis. In our study, CD-1 mouse uteri after normal and in vitro fertilization (IVF) were investigated at 6.5, 8.5, and 10.5 days of pregnancy. Matrix-assisted laser desorption/ionization time-of-flight imaging mass spectrometry and liquid chromatography coupled tandem mass spectrometry were used for identification of phosphatidylcholine (PC) lipid structures. In the embryonal tissues, PC 32:0 and PC 34:0 were increased, while in the antemesometrial (AM) decidua the two 20:4-containing PCs, PC 36:4 and PC 38:4 were increased. In transferred uterus samples, higher expressions of PC 34:0, PC 34:1, PC 34:2, PC 36:1, and PC 36:2 in mesometrial decidua were seen, whereas the two 20:4-containing PCs, PC 36:4 and PC 38:4 showed increased expression in the AM and lateral decidua. This paper shows a significant spatio-temporal change in lipid metabolism during IVF procedures for the first time.
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Affiliation(s)
- Stefánia Gitta
- Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, Medical School, University of Pécs, 7624 Pécs, Hungary; (S.G.); (A.S.)
| | - Éva Szabó
- Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, Medical School, University of Pécs, 7624 Pécs, Hungary; (S.G.); (A.S.)
| | - Alexandra Sulc
- Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, Medical School, University of Pécs, 7624 Pécs, Hungary; (S.G.); (A.S.)
- National Laboratory on Human Reproduction, University of Pécs, 7621 Pécs, Hungary; (P.C.); (G.M.); (A.B.); (Á.S.)
| | - Péter Czétány
- National Laboratory on Human Reproduction, University of Pécs, 7621 Pécs, Hungary; (P.C.); (G.M.); (A.B.); (Á.S.)
- Urology Clinic, Clinical Center, University of Pécs, 7621 Pécs, Hungary
| | - Gábor Máté
- National Laboratory on Human Reproduction, University of Pécs, 7621 Pécs, Hungary; (P.C.); (G.M.); (A.B.); (Á.S.)
- Pannon Reproduction Institute, 8300 Tapolca, Hungary
| | - András Balló
- National Laboratory on Human Reproduction, University of Pécs, 7621 Pécs, Hungary; (P.C.); (G.M.); (A.B.); (Á.S.)
- Urology Clinic, Clinical Center, University of Pécs, 7621 Pécs, Hungary
| | - Tímea Csabai
- Institute of Biology, Medical School, University of Pécs, 7624 Pécs, Hungary;
| | - Árpád Szántó
- National Laboratory on Human Reproduction, University of Pécs, 7621 Pécs, Hungary; (P.C.); (G.M.); (A.B.); (Á.S.)
- Urology Clinic, Clinical Center, University of Pécs, 7621 Pécs, Hungary
| | - László Márk
- Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, Medical School, University of Pécs, 7624 Pécs, Hungary; (S.G.); (A.S.)
- National Laboratory on Human Reproduction, University of Pécs, 7621 Pécs, Hungary; (P.C.); (G.M.); (A.B.); (Á.S.)
- Imaging Centre for Life and Material Sciences, University of Pécs, 7624 Pécs, Hungary
- HUN-REN-PTE, Human Reproduction Research Group, 7624 Pécs, Hungary
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Cheng H, Miller D, Southwell N, Fischer JL, Taylor I, Salbaum JM, Kappen C, Hu F, Yang C, Gross SS, D'Aurelio M, Chen Q. Untargeted Pixel-by-Pixel Imaging of Metabolite Ratio Pairs as a Novel Tool for Biomedical Discovery in Mass Spectrometry Imaging. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.01.10.575105. [PMID: 38370710 PMCID: PMC10871215 DOI: 10.1101/2024.01.10.575105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Mass spectrometry imaging (MSI) is a powerful technology used to define the spatial distribution and relative abundance of structurally identified and yet-undefined metabolites across tissue cryosections. While numerous software packages enable pixel-by-pixel imaging of individual metabolites, the research community lacks a discovery tool that images all metabolite abundance ratio pairs. Importantly, recognition of correlated metabolite pairs informs discovery of unanticipated molecules contributing to shared metabolic pathways, uncovers hidden metabolic heterogeneity across cells and tissue subregions, and indicates single-timepoint flux through pathways of interest. Here, we describe the development and implementation of an untargeted R package workflow for pixel-by-pixel ratio imaging of all metabolites detected in an MSI experiment. Considering untargeted MSI studies of murine brain and embryogenesis, we demonstrate that ratio imaging minimizes systematic data variation introduced by sample handling and instrument drift, markedly enhances spatial image resolution, and reveals previously unrecognized metabotype-distinct tissue regions. Furthermore, ratio imaging facilitates identification of novel regional biomarkers and provides anatomical information regarding spatial distribution of metabolite-linked biochemical pathways. The algorithm described herein is applicable to any MSI dataset containing spatial information for metabolites, peptides or proteins, offering a potent tool to enhance knowledge obtained from current spatial metabolite profiling technologies.
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Shibata K, Hayasaka T, Sakamoto S, Hashimoto S, Kawamura N, Fujiyoshi M, Kimura T, Shimamura T, Fukai M, Taketomi A. Warm Ischemia Induces Spatiotemporal Changes in Lysophosphatidylinositol That Affect Post-Reperfusion Injury in Normal and Steatotic Rat Livers. J Clin Med 2023; 12:jcm12093163. [PMID: 37176603 PMCID: PMC10179083 DOI: 10.3390/jcm12093163] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Warm ischemia-reperfusion injury is a prognostic factor for hepatectomy and liver transplantation. However, its underlying molecular mechanisms are unknown. This study aimed to elucidate these mechanisms and identify the predictive markers of post-reperfusion injury. Rats with normal livers were subjected to 70% hepatic warm ischemia for 15, 30, or 90 min, while those with steatotic livers were subjected to 70% hepatic warm ischemia for only 30 min. The liver and blood were sampled at the end of ischemia and 1, 6, and 24 h after reperfusion. The serum alanine aminotransferase (ALT) activity, Suzuki injury scores, and lipid peroxidation (LPO) products were evaluated. The ALT activity and Suzuki scores increased with ischemic duration and peaked at 1 and 6 h after reperfusion, respectively. Steatotic livers subjected to 30 min ischemia and normal livers subjected to 90 min ischemia showed comparable injury. A similar trend was observed for LPO products. Imaging mass spectrometry of normal livers revealed an increase in lysophosphatidylinositol (LPI (18:0)) and a concomitant decrease in phosphatidylinositol (PI (18:0/20:4)) in Zone 1 (central venous region) with increasing ischemic duration; they returned to their basal values after reperfusion. Similar changes were observed in steatotic livers. Hepatic warm ischemia time-dependent acceleration of PI (18:0/20:4) to LPI (18:0) conversion occurs initially in Zone 1 and is more pronounced in fatty livers. Thus, the LPI (18:0)/PI (18:0/20:4) ratio is a potential predictor of post-reperfusion injury.
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Affiliation(s)
- Kengo Shibata
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Takahiro Hayasaka
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Sodai Sakamoto
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Satsuki Hashimoto
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Norio Kawamura
- Department of Transplant Surgery, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Masato Fujiyoshi
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Taichi Kimura
- Department of Cancer Pathology, Faculty of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Tsuyoshi Shimamura
- Division of Organ Transplantation, Hokkaido University Hospital, Sapporo 060-8648, Japan
| | - Moto Fukai
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
| | - Akinobu Taketomi
- Department of Gastroenterological Surgery I, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
- Department of Transplant Surgery, Graduate School of Medicine, Hokkaido University, Sapporo 060-8638, Japan
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