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Rodriguez P, Blakely RD. Sink or swim: Does a worm paralysis phenotype hold clues to neurodegenerative disease? J Cell Physiol 2024; 239:e31125. [PMID: 37795580 DOI: 10.1002/jcp.31125] [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: 07/15/2023] [Revised: 09/07/2023] [Accepted: 09/11/2023] [Indexed: 10/06/2023]
Abstract
Receiving a neurodegenerative disease (NDD) diagnosis, such as Alzheimer's disease, Parkinson's disease, Huntington's disease, or amyotrophic lateral sclerosis, is devastating, particularly given the limited options for treatment. Advances in genetic technologies have allowed for efficient modeling of NDDs in animals and brought hope for new disease-modifying medications. The complexity of the mammalian brain and the costs and time needed to identify and develop therapeutic leads limits progress. Modeling NDDs in invertebrates, such as the fruit fly Drosophila melanogaster and the nematode Caenorhabditis elegans, offers orders of magnitude increases in speed of genetic analysis and manipulation, and can be pursued at substantially reduced cost, providing an important, platform complement and inform research with mammalian NDD models. In this review, we describe how our efforts to exploit C. elegans for the study of neural signaling and health led to the discovery of a paralytic phenotype (swimming-induced paralysis) associated with altered dopamine signaling and, surprisingly, to the discovery of a novel gene and pathway whose dysfunction in glial cells triggers neurodegeneration. Research to date on swip-10 and its putative mammalian ortholog MBLAC1, suggests that a tandem analysis will offer insights into NDD mechanisms and insights into novel, disease-modifying therapeutics.
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Affiliation(s)
- Peter Rodriguez
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Boca Raton, Florida, USA
| | - Randy D Blakely
- Department of Biomedical Science, Charles E. Schmidt College of Medicine, Boca Raton, Florida, USA
- Stiles-Nicholson Brain Institute, Florida Atlantic University, Jupiter, Florida, USA
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2
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Ceyhan B, Nategh P, Neghabi M, LaMar JA, Konjalwar S, Rodriguez P, Hahn MK, Gross M, Grumbar G, Salleng KJ, Blakely RD, Ranji M. Optical Imaging Demonstrates Tissue-Specific Metabolic Perturbations in Mblac1 Knockout Mice. IEEE JOURNAL OF TRANSLATIONAL ENGINEERING IN HEALTH AND MEDICINE 2024; 12:298-305. [PMID: 38410184 PMCID: PMC10896421 DOI: 10.1109/jtehm.2024.3355962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 12/10/2023] [Accepted: 01/15/2024] [Indexed: 02/28/2024]
Abstract
OBJECTIVE Metabolic changes have been extensively documented in neurodegenerative brain disorders, including Parkinson's disease and Alzheimer's disease (AD). Mutations in the C. elegans swip-10 gene result in dopamine (DA) dependent motor dysfunction accompanied by DA neuron degeneration. Recently, the putative human ortholog of swip-10 (MBLAC1) was implicated as a risk factor in AD, a disorder that, like PD, has been associated with mitochondrial dysfunction. Interestingly, the AD risk associated with MBLAC1 arises in subjects with cardiovascular morbidity, suggesting a broader functional insult arising from reduced MBLAC1 protein expression and one possibly linked to metabolic alterations. METHODS Our current studies, utilizing Mblac1 knockout (KO) mice, seek to determine whether mitochondrial respiration is affected in the peripheral tissues of these mice. We quantified the levels of mitochondrial coenzymes, NADH, FAD, and their redox ratio (NADH/FAD, RR) in livers and kidneys of wild-type (WT) mice and their homozygous KO littermates of males and females, using 3D optical cryo-imaging. RESULTS Compared to WT, the RR of livers from KO mice was significantly reduced, without an apparent sex effect, driven predominantly by significantly lower NADH levels. In contrast, no genotype and sex differences were observed in kidney samples. Serum analyses of WT and KO mice revealed significantly elevated glucose levels in young and aged KO adults and diminished cholesterol levels in the aged KOs, consistent with liver dysfunction. DISCUSSION/CONCLUSION As seen with C. elegans swip-10 mutants, loss of MBLAC1 protein results in metabolic changes that are not restricted to neural cells and are consistent with the presence of peripheral comorbidities accompanying neurodegenerative disease in cases where MBLAC1 expression changes impact risk.
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Affiliation(s)
- Busenur Ceyhan
- Biophotonics LaboratoryDepartment of Electrical Engineering and Computer Science, College of Engineering and Computer ScienceFlorida Atlantic University Boca Raton FL 33431 USA
| | - Parisa Nategh
- Biophotonics LaboratoryDepartment of Electrical Engineering and Computer Science, College of Engineering and Computer ScienceFlorida Atlantic University Boca Raton FL 33431 USA
| | - Mehrnoosh Neghabi
- Biophotonics LaboratoryDepartment of Electrical Engineering and Computer Science, College of Engineering and Computer ScienceFlorida Atlantic University Boca Raton FL 33431 USA
| | - Jacob A LaMar
- Department of Biomedical ScienceCharles E. Schmidt College of MedicineFlorida Atlantic University Boca Raton FL 33431 USA
| | - Shalaka Konjalwar
- Biophotonics LaboratoryDepartment of Electrical Engineering and Computer Science, College of Engineering and Computer ScienceFlorida Atlantic University Boca Raton FL 33431 USA
| | - Peter Rodriguez
- Department of Biomedical ScienceCharles E. Schmidt College of MedicineFlorida Atlantic University Boca Raton FL 33431 USA
| | - Maureen K Hahn
- Department of Biomedical ScienceCharles E. Schmidt College of MedicineFlorida Atlantic University Boca Raton FL 33431 USA
- Stiles-Nicholson Brain Institute, Florida Atlantic University Jupiter FL 33458 USA
| | - Matthew Gross
- Department of Biomedical ScienceCharles E. Schmidt College of MedicineFlorida Atlantic University Boca Raton FL 33431 USA
| | - Gregory Grumbar
- Department of Biomedical ScienceCharles E. Schmidt College of MedicineFlorida Atlantic University Boca Raton FL 33431 USA
| | - Kenneth J Salleng
- Division of Research, Comparative MedicineFlorida Atlantic University Boca Raton FL 33431 USA
| | - Randy D Blakely
- Department of Biomedical ScienceCharles E. Schmidt College of MedicineFlorida Atlantic University Boca Raton FL 33431 USA
- Stiles-Nicholson Brain Institute, Florida Atlantic University Jupiter FL 33458 USA
| | - Mahsa Ranji
- Biophotonics LaboratoryDepartment of Electrical Engineering and Computer Science, College of Engineering and Computer ScienceFlorida Atlantic University Boca Raton FL 33431 USA
- Stiles-Nicholson Brain Institute, Florida Atlantic University Jupiter FL 33458 USA
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Liu Y, Yang Y, Chen W, Shen F, Xie L, Zhang Y, Zhai Y, He F, Zhu Y, Chang C. DeepRTAlign: toward accurate retention time alignment for large cohort mass spectrometry data analysis. Nat Commun 2023; 14:8188. [PMID: 38081814 PMCID: PMC10713976 DOI: 10.1038/s41467-023-43909-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 11/23/2023] [Indexed: 12/18/2023] Open
Abstract
Retention time (RT) alignment is a crucial step in liquid chromatography-mass spectrometry (LC-MS)-based proteomic and metabolomic experiments, especially for large cohort studies. The most popular alignment tools are based on warping function method and direct matching method. However, existing tools can hardly handle monotonic and non-monotonic RT shifts simultaneously. Here, we develop a deep learning-based RT alignment tool, DeepRTAlign, for large cohort LC-MS data analysis. DeepRTAlign has been demonstrated to have improved performances by benchmarking it against current state-of-the-art approaches on multiple real-world and simulated proteomic and metabolomic datasets. The results also show that DeepRTAlign can improve identification sensitivity without compromising quantitative accuracy. Furthermore, using the MS features aligned by DeepRTAlign, we trained and validated a robust classifier to predict the early recurrence of hepatocellular carcinoma. DeepRTAlign provides an advanced solution to RT alignment in large cohort LC-MS studies, which is currently a major bottleneck in proteomics and metabolomics research.
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Affiliation(s)
- Yi Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing, 100023, China
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China
| | - Yun Yang
- International Academy of Phronesis Medicine (Guang Dong), No. 96 Xindao Ring South Road, Guangzhou International Bio Island, Guangzhou, 510000, China
- South China Institute of Biomedicine, No. 83 Ruihe Road, Guangzhou, 510535, China
| | - Wendong Chen
- International Academy of Phronesis Medicine (Guang Dong), No. 96 Xindao Ring South Road, Guangzhou International Bio Island, Guangzhou, 510000, China
- South China Institute of Biomedicine, No. 83 Ruihe Road, Guangzhou, 510535, China
| | - Feng Shen
- Department of Hepatic Surgery IV, the Eastern Hepatobiliary Surgery Hospital, Naval Medical University, Shanghai, 200433, China
| | - Linhai Xie
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China
- International Academy of Phronesis Medicine (Guang Dong), No. 96 Xindao Ring South Road, Guangzhou International Bio Island, Guangzhou, 510000, China
- South China Institute of Biomedicine, No. 83 Ruihe Road, Guangzhou, 510535, China
| | - Yingying Zhang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China
- Chongqing Key Laboratory on Big Data for Bio Intelligence, Chongqing University of Posts and Telecommunications, Chongqing, 400065, China
| | - Yuanjun Zhai
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China
| | - Fuchu He
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China
- International Academy of Phronesis Medicine (Guang Dong), No. 96 Xindao Ring South Road, Guangzhou International Bio Island, Guangzhou, 510000, China
- Research Unit of Proteomics Driven Cancer Precision Medicine, Chinese Academy of Medical Sciences, Beijing, 102206, China
| | - Yunping Zhu
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China.
| | - Cheng Chang
- State Key Laboratory of Proteomics, Beijing Proteome Research Center, National Center for Protein Sciences (Beijing), Beijing Institute of Lifeomics, Beijing, 102206, China.
- Research Unit of Proteomics Driven Cancer Precision Medicine, Chinese Academy of Medical Sciences, Beijing, 102206, China.
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Ho SY, Yuliana ME, Chou HC, Chen CM. Intrauterine growth restriction alters kidney metabolism at the end of nephrogenesis. Nutr Metab (Lond) 2023; 20:50. [PMID: 37990266 PMCID: PMC10664663 DOI: 10.1186/s12986-023-00769-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Accepted: 11/14/2023] [Indexed: 11/23/2023] Open
Abstract
BACKGROUND This study investigated the effect of uteroplacental insufficiency (UPI) on renal development by detecting metabolic alterations in the kidneys of rats with intrauterine growth restriction (IUGR). METHODS On gestational day 17, pregnant Sprague Dawley rats were selected and allocated randomly to either the IUGR group or the control group. The IUGR group received a protocol involving the closure of bilateral uterine vessels, while the control group underwent a sham surgery. The rat pups were delivered on gestational day 22 by natural means. Pups were randomly recruited from both the control and IUGR groups on the seventh day after birth. The kidneys were surgically removed to conduct Western blot and metabolomic analyses. RESULTS IUGR was produced by UPI, as evidenced by the significantly lower body weights of the pups with IUGR compared to the control pups on postnatal day 7. UPI significantly increased the levels of cleaved caspase-3 (p < 0.05) and BAX/Bcl-2 (p < 0.01) in the pups with IUGR. Ten metabolites exhibited statistically significant differences between the groups (q < 0.05). Metabolic pathway enrichment analysis demonstrated statistically significant variations between the groups in the metabolism related to fructose and mannose, amino and nucleotide sugars, and inositol phosphate. CONCLUSIONS UPI alters kidney metabolism in growth-restricted newborn rats and induces renal apoptosis. The results of our study have the potential to provide new insights into biomarkers and metabolic pathways that are involved in the kidney changes generated by IUGR.
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Affiliation(s)
- Sheng-Yuan Ho
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Pediatrics, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan
| | - Merryl Esther Yuliana
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Faculty of Medicine, Christian University of Indonesia, Jakarta, Indonesia
| | - Hsiu-Chu Chou
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chung-Ming Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- International Ph.D. Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.
- Department of Pediatrics, Taipei Medical University Hospital, Taipei, Taiwan.
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Ceyhan B, LaMar J, Nategh P, Neghabi M, Konjalwar S, Rodriguez P, Hahn MK, Blakely RD, Ranji M. Optical Imaging Reveals Liver Metabolic Perturbations in Mblac1 Knockout Mice. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2023; 2023:1-4. [PMID: 38083729 DOI: 10.1109/embc40787.2023.10341032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Metabolic changes have been extensively documented in brain tissue undergoing neurodegeneration, including Parkinson's disease and Alzheimer's disease (AD). Mutations in the C. elegans swip-10 gene result in dopamine (DA) dependent motor dysfunction accompanied by DA neuron degeneration. Recently, the putative human ortholog of swip-10 (MBLAC1) was implicated as a risk factor in AD, that like PD, has been associated with mitochondrial dysfunction. Interestingly, the AD risk associated with MBLAC1 arises in subjects with cardiovascular morbidity, suggesting the possibility of a broader functional insult arising from reduced MBLAC1 protein expression, and one possibly linked to metabolic alterations. Our current studies, utilizing Mblac1 knockout (KO) mice, seeks to determine whether mitochondrial respiration is affected in peripheral tissues of these animals in this model. To initiate these studies, we quantified the levels of mitochondrial coenzymes, NADH, FAD, and their redox ratio (NADH/FAD, RR) in the livers of wild type (WT) mice and their homozygous KO littermates, using 3D optical cryo-imaging. We found that Mblac1 KO mice exhibited a greater oxidized redox state compared to WT mice. When compared to the WT group, the redox ratio of KO mice was decreased by 46.32%, driven predominantly by significantly lower NADH levels (more oxidized state). We speculate that, as seen with C. elegans swip-10 mutants, that loss of MBLAC1 protein results in deficits in tricarboxylic acid cycle (TCA) production of NADH and FAD TCA that leads to diminished cellular ATP production and oxidative stress. Such observations are consistent with changes that in the central nervous system (CNS) could support neurodegeneration and in the periphery account for comorbidities.
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6
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Yuliana ME, Huang ZH, Chou HC, Chen CM. Effects of uteroplacental insufficiency on growth-restricted rats with altered lung development: A metabolomic analysis. Front Pediatr 2022; 10:952313. [PMID: 36160795 PMCID: PMC9492919 DOI: 10.3389/fped.2022.952313] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Accepted: 08/17/2022] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Intrauterine growth restriction (IUGR) is among the most challenging problems in antenatal care. Several factors implicated in the pathophysiology of IUGR have been identified. We aimed to investigate the effect of UPI on lung development by identifying metabolic changes during the first seven days of postnatal life. MATERIALS AND METHODS On gestation day 17, four time-dated pregnant Sprague Dawley rats were randomized to a IUGR group or a control group, which underwent an IUGR protocol comprising bilateral uterine vessel ligation and sham surgery, respectively. On gestation day 22, 39 control and 26 IUGR pups were naturally delivered. The rat pups were randomly selected from the control and IUGR group on postnatal day 7. The pups' lungs were excised for histological, Western blot, and metabolomic analyses. Liquid chromatography mass spectrometry was performed for metabolomic analyses. RESULTS UPI induced IUGR, as evidenced by the IUGR rat pups having a significantly lower average body weight than the control rat pups on postnatal day 7. The control rats exhibited healthy endothelial cell healthy and vascular development, and the IUGR rats had a significantly lower average radial alveolar count than the control rats. The mean birth weight of the 26 IUGR rats (5.89 ± 0.74 g) was significantly lower than that of the 39 control rats (6.36 ± 0.55 g; p < 0.01). UPI decreased the levels of platelet-derived growth factor-A (PDGF-A) and PDGF-B in the IUGR newborn rats. One-way analysis of variance revealed 345 features in the pathway, 14 of which were significant. Regarding major differential metabolites, 10 of the 65 metabolites examined differed significantly between the groups (p < 0.05). Metabolite pathway enrichment analysis revealed significant between-group differences in the metabolism of glutathione, arginine-proline, thiamine, taurine-hypotaurine, pantothenate, alanine-aspartate-glutamate, cysteine-methionine, glycine-serine-threonine, glycerophospholipid, and purine as well as in the biosynthesis of aminoacyl-tRNA, pantothenate, and CoA. CONCLUSIONS UPI alters lung development and metabolomics in growth-restricted newborn rats. Our findings may elucidate new metabolic mechanisms underlying IUGR-induced altered lung development and serve as a reference for the development of prevention and treatment strategies for IUGR-induced altered lung development.
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Affiliation(s)
- Merryl Esther Yuliana
- International PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Faculty of Medicine, Christian University of Indonesia, Jakarta, Indonesia
| | - Zheng-Hao Huang
- Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsiu-Chu Chou
- Department of Anatomy and Cell Biology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chung-Ming Chen
- International PhD Program in Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Pediatrics, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Pediatrics, Taipei Medical University Hospital, Taipei, Taiwan
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7
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Vogrinc D, Goričar K, Dolžan V. Genetic Variability in Molecular Pathways Implicated in Alzheimer's Disease: A Comprehensive Review. Front Aging Neurosci 2021; 13:646901. [PMID: 33815092 PMCID: PMC8012500 DOI: 10.3389/fnagi.2021.646901] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/16/2021] [Indexed: 12/14/2022] Open
Abstract
Alzheimer's disease (AD) is a complex neurodegenerative disease, affecting a significant part of the population. The majority of AD cases occur in the elderly with a typical age of onset of the disease above 65 years. AD presents a major burden for the healthcare system and since population is rapidly aging, the burden of the disease will increase in the future. However, no effective drug treatment for a full-blown disease has been developed to date. The genetic background of AD is extensively studied; numerous genome-wide association studies (GWAS) identified significant genes associated with increased risk of AD development. This review summarizes more than 100 risk loci. Many of them may serve as biomarkers of AD progression, even in the preclinical stage of the disease. Furthermore, we used GWAS data to identify key pathways of AD pathogenesis: cellular processes, metabolic processes, biological regulation, localization, transport, regulation of cellular processes, and neurological system processes. Gene clustering into molecular pathways can provide background for identification of novel molecular targets and may support the development of tailored and personalized treatment of AD.
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Affiliation(s)
| | | | - Vita Dolžan
- Pharmacogenetics Laboratory, Institute of Biochemistry and Molecular Genetics, Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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Khan MJ, Codreanu SG, Goyal S, Wages PA, Gorti SKK, Pearson MJ, Uribe I, Sherrod SD, McLean JA, Porter NA, Robinson RAS. Evaluating a targeted multiple reaction monitoring approach to global untargeted lipidomic analyses of human plasma. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2020; 34:e8911. [PMID: 32738001 PMCID: PMC9126483 DOI: 10.1002/rcm.8911] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/20/2020] [Accepted: 07/25/2020] [Indexed: 05/04/2023]
Abstract
RATIONALE The Lipidyzer platform was recently updated on a SCIEX QTRAP 6500+ mass spectrometer and offers a targeted lipidomics assay including 1150 different lipids. We evaluated this targeted approach using human plasma samples and compared the results against a global untargeted lipidomics method using a high-resolution Q Exactive HF Orbitrap mass spectrometer. METHODS Lipids from human plasma samples (N = 5) were extracted using a modified Bligh-Dyer approach. A global untargeted analysis was performed using a Thermo Orbitrap Q Exactive HF mass spectrometer, followed by data analysis using Progenesis QI software. Multiple reaction monitoring (MRM)-based targeted analysis was performed using a QTRAP 6500+ mass spectrometer, followed by data analysis using SCIEX OS software. The samples were injected on three separate days to assess reproducibility for both approaches. RESULTS Overall, 465 lipids were identified from 11 lipid classes in both approaches, of which 159 were similar between the methods, 168 lipids were unique to the MRM approach, and 138 lipids were unique to the untargeted approach. Phosphatidylcholine and phosphatidylethanolamine species were the most commonly identified using the untargeted approach, while triacylglycerol species were the most commonly identified using the targeted MRM approach. The targeted MRM approach had more consistent relative abundances across the three days than the untargeted approach. Overall, the coefficient of variation for inter-day comparisons across all lipid classes was ∼ 23% for the untargeted approach and ∼ 9% for the targeted MRM approach. CONCLUSIONS The targeted MRM approach identified similar numbers of lipids to a conventional untargeted approach, but had better representation of 11 lipid classes commonly identified by both approaches. Based on the separation methods employed, the conventional untargeted approach could better detect phosphatidylcholine and sphingomyelin lipid classes. The targeted MRM approach had lower inter-day variability than the untargeted approach when tested using a small group of plasma samples. These studies highlight the advantages in using targeted MRM approaches for human plasma lipidomics analysis.
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Affiliation(s)
- Mostafa J Khan
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
| | - Simona G Codreanu
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
- Center for Innovative Technology, Vanderbilt University, Nashville, TN, 37235, USA
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37235, USA
| | - Sandeep Goyal
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
| | - Phillip A Wages
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
| | | | | | - Isabel Uribe
- Department of Chemistry, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Stacy D Sherrod
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
- Center for Innovative Technology, Vanderbilt University, Nashville, TN, 37235, USA
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37235, USA
| | - John A McLean
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
- Center for Innovative Technology, Vanderbilt University, Nashville, TN, 37235, USA
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37235, USA
| | - Ned A Porter
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37235, USA
| | - Renã A S Robinson
- Department of Chemistry, Vanderbilt University, Nashville, TN, 37235, USA
- Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN, 37235, USA
- Vanderbilt Memory and Alzheimer's Center, Vanderbilt University Medical Center, Nashville, TN, 37235, USA
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Dodds JN, Baker ES. Ion Mobility Spectrometry: Fundamental Concepts, Instrumentation, Applications, and the Road Ahead. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2019; 30:2185-2195. [PMID: 31493234 PMCID: PMC6832852 DOI: 10.1007/s13361-019-02288-2] [Citation(s) in RCA: 220] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Revised: 07/08/2019] [Accepted: 07/15/2019] [Indexed: 05/07/2023]
Abstract
Ion mobility spectrometry (IMS) is a rapid separation technique that has experienced exponential growth as a field of study. Interfacing IMS with mass spectrometry (IMS-MS) provides additional analytical power as complementary separations from each technique enable multidimensional characterization of detected analytes. IMS separations occur on a millisecond timescale, and therefore can be readily nested into traditional GC and LC/MS workflows. However, the continual development of novel IMS methods has generated some level of confusion regarding the advantages and disadvantages of each. In this critical insight, we aim to clarify some common misconceptions for new users in the community pertaining to the fundamental concepts of the various IMS instrumental platforms (i.e., DTIMS, TWIMS, TIMS, FAIMS, and DMA), while addressing the strengths and shortcomings associated with each. Common IMS-MS applications are also discussed in this review, such as separating isomeric species, performing signal filtering for MS, and incorporating collision cross-section (CCS) values into both targeted and untargeted omics-based workflows as additional ion descriptors for chemical annotation. Although many challenges must be addressed by the IMS community before mobility information is collected in a routine fashion, the future is bright with possibilities.
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Affiliation(s)
- James N Dodds
- Department of Chemistry, North Carolina State University, Raleigh, NC, 27695, USA
| | - Erin S Baker
- Department of Chemistry, North Carolina State University, Raleigh, NC, 27695, USA.
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Rombouts C, De Spiegeleer M, Van Meulebroek L, De Vos WH, Vanhaecke L. Validated comprehensive metabolomics and lipidomics analysis of colon tissue and cell lines. Anal Chim Acta 2019; 1066:79-92. [PMID: 31027537 DOI: 10.1016/j.aca.2019.03.020] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 03/04/2019] [Accepted: 03/05/2019] [Indexed: 10/27/2022]
Abstract
Current untargeted approaches for metabolic fingerprinting of colon tissue and cell lines lack validation of reproducibility and/or focus on a selection of metabolites as opposed to the entire metabolome. Yet, both are critical to ensure reliable results and pursue a fully holistic analysis. Therefore, we have optimized and validated a platform for analyzing the polar metabolome and lipidome of colon-derived cell and tissue samples based on a consecutive extraction of polar and apolar components. Peak areas of selected targeted analytes and the number of untargeted components were assessed. Analysis was performed using ultra-high performance liquid-chromatography (UHPLC) coupled to hybrid quadrupole-Orbitrap high-resolution mass spectrometry (HRMS). This resulted in an optimized extraction protocol using 50% methanol/ultrapure water to obtain the polar fraction followed by a dichloromethane-based lipid extraction. Using this comprehensive approach, we have detected more than 15,000 components with CV < 30% in internal quality control (IQC) samples and were able to discriminate the non-transformed (NT) and transformed (T) state in human colon tissue and cell lines based on validated OPLS-DA models (R2Y > 0.719 and Q2 > 0.674). To conclude, our validated polar metabolomics and lipidomics fingerprinting approach could be of great value to reveal gastrointestinal disease-associated biomarkers and mechanisms.
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Affiliation(s)
- Caroline Rombouts
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820, Merelbeke, Belgium; Ghent University, Faculty of Bioscience Engineering, Department of Molecular Biotechnology, Cell Systems & Imaging, Coupure Links 653, 9000, Ghent, Belgium; Antwerp University, Faculty of Veterinary Medicine, Department of Veterinary Sciences, Laboratory of Cell Biology & Histology, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Margot De Spiegeleer
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Lieven Van Meulebroek
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820, Merelbeke, Belgium
| | - Winnok H De Vos
- Ghent University, Faculty of Bioscience Engineering, Department of Molecular Biotechnology, Cell Systems & Imaging, Coupure Links 653, 9000, Ghent, Belgium; Antwerp University, Faculty of Veterinary Medicine, Department of Veterinary Sciences, Laboratory of Cell Biology & Histology, Universiteitsplein 1, 2610, Wilrijk, Belgium
| | - Lynn Vanhaecke
- Ghent University, Faculty of Veterinary Medicine, Department of Veterinary Public Health and Food Safety, Laboratory of Chemical Analysis, Salisburylaan 133, B-9820, Merelbeke, Belgium; Institute for Global Food Security, School of Biological Sciences, Queen's University, Belfast, Northern Ireland, United Kingdom.
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