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Arunachalam AR, Samuel SS, Mani A, Maynard JP, Stayer KM, Dybbro E, Narayanan S, Biswas A, Pathan S, Soni K, Kamal AHM, Ambati CSR, Putluri N, Desai MS, Thevananther S. P2Y2 purinergic receptor gene deletion protects mice from bacterial endotoxin and sepsis-associated liver injury and mortality. Am J Physiol Gastrointest Liver Physiol 2023; 325:G471-G491. [PMID: 37697947 PMCID: PMC10812707 DOI: 10.1152/ajpgi.00090.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 08/28/2023] [Accepted: 09/11/2023] [Indexed: 09/13/2023]
Abstract
The liver plays a significant role in regulating a wide range of metabolic, homeostatic, and host-defense functions. However, the impact of liver injury on the host's ability to control bacteremia and morbidity in sepsis is not well understood. Leukocyte recruitment and activation lead to cytokine and chemokine release, which, in turn, trigger hepatocellular injury and elevate nucleotide levels in the extracellular milieu. P2Y2 purinergic receptors, G protein-coupled and activated by extracellular ATP/UTP, are expressed at the cell surface of hepatocytes and nonparenchymal cells. We sought to determine whether P2Y2 purinergic receptor function is necessary for the maladaptive host response to bacterial infection and endotoxin-mediated inflammatory liver injury and mortality in mice. We report that P2Y2 purinergic receptor knockout mice (P2Y2-/-) had attenuated inflammation and liver injury, with improved survival in response to LPS/galactosamine (LPS/GalN; inflammatory liver injury) and cecal ligation and puncture (CLP; polymicrobial sepsis). P2Y2-/- livers had attenuated c-Jun NH2-terminal kinase activation, matrix metallopeptidase-9 expression, and hepatocyte apoptosis in response to LPS/GalN and attenuated inducible nitric oxide synthase and nucleotide-binding oligomerization domain, leucine-rich repeat and pyrin domain containing 3 protein expression in response to CLP. Implicating liver injury in the disruption of amino acid homeostasis, CLP led to lower serum arginine and higher bacterial load and morbidity in the WT mice, whereas serum arginine levels were comparable to sham-operated controls in P2Y2-/- mice, which had attenuated bacteremia and improved survival. Collectively, our studies highlight the pathophysiological relevance of P2Y2 purinergic receptor function in inflammatory liver injury and dysregulation of systemic amino acid homeostasis with implications for sepsis-associated immune dysfunction and morbidity in mice.NEW & NOTEWORTHY Our studies provide experimental evidence for P2Y2 purinergic receptor-mediated potentiation of inflammatory liver injury, morbidity, and mortality, in two well-established animal models of inflammatory liver injury. Our findings highlight the potential to target P2Y2 purinergic signaling to attenuate the induction of "cytokine storm" and prevent its deleterious consequences on liver function, systemic amino acid homeostasis, host response to bacterial infection, and sepsis-associated morbidity and mortality.
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Affiliation(s)
- Athis R Arunachalam
- Neonatology, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Sanju S Samuel
- Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Arunmani Mani
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Janielle P Maynard
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Kelsey M Stayer
- Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Eric Dybbro
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Subapradha Narayanan
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Aalekhya Biswas
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Saliha Pathan
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Krishnakant Soni
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Abu Hena Mostafa Kamal
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States
| | | | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas, United States
| | - Moreshwar S Desai
- Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
| | - Sundararajah Thevananther
- Section of Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Baylor College of Medicine, Houston, Texas, United States
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El Saie A, Fu C, Grimm SL, Robertson MJ, Hoffman K, Putluri V, Ambati CSR, Putluri N, Shivanna B, Coarfa C, Pammi M. Metabolome and microbiome multi-omics integration from a murine lung inflammation model of bronchopulmonary dysplasia. Pediatr Res 2022; 92:1580-1589. [PMID: 35338351 PMCID: PMC9509498 DOI: 10.1038/s41390-022-02002-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 01/28/2022] [Accepted: 02/10/2022] [Indexed: 12/30/2022]
Abstract
BACKGROUND Respiratory tract microbial dysbiosis can exacerbate inflammation and conversely inflammation may cause dysbiosis. Dysbiotic microbiome metabolites may lead to bronchopulmonary dysplasia (BPD). Hyperoxia and lipopolysaccharide (LPS) interaction alters lung microbiome and metabolome, mediating BPD lung injury sequence. METHODS C57BL6/J mice were exposed to 21% (normoxia) or 70% (hyperoxia) oxygen during postnatal days (PND) 1-14. Pups were injected with LPS (6 mg/kg) or equal PBS volume, intraperitoneally on PND 3, 5, and 7. At PND14, the lungs were collected for microbiome and metabolomic analyses (n = 5/group). RESULTS Microbiome alpha and beta diversity were similar between groups. Metabolic changes included hyperoxia 31 up/18 down, LPS 7 up/4 down, exposure interaction 8. Hyperoxia increased Intestinimonas abundance, whereas LPS decreased Clostridiales, Dorea, and Intestinimonas; exposure interaction affected Blautia. Differential co-expression analysis on multi-omics data identified exposure-altered modules. Hyperoxia metabolomics response was integrated with a published matching transcriptome, identifying four induced genes (ALDOA, GAA, NEU1, RENBP), which positively correlated with BPD severity in a published human newborn cohort. CONCLUSIONS We report hyperoxia and LPS lung microbiome and metabolome signatures in a clinically relevant BPD model. We identified four genes correlating with BPD status in preterm infants that are promising targets for therapy and prevention. IMPACT Using multi-omics, we identified and correlated key biomarkers of hyperoxia and LPS on murine lung micro-landscape and examined their potential clinical implication, which shows strong clinical relevance for future research. Using a double-hit model of clinical relevance to bronchopulmonary dysplasia, we are the first to report integrated metabolomic/microbiome landscape changes and identify novel disease biomarker candidates.
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Affiliation(s)
- Ahmed El Saie
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas
| | - Chenlian Fu
- Department of Biology, Harvey Mudd College, Claremont, California,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Sandra L. Grimm
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas,Center for Precision Environmental Health, Baylor College of Medicine, Houston, Texas
| | - Matthew J Robertson
- Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, Texas
| | - Kristi Hoffman
- Alkek Center for Metagenomics and Microbiome Research, Baylor College of Medicine, Houston, Texas
| | - Vasanta Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | | | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Binoy Shivanna
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas
| | - Cristian Coarfa
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA. .,Dan L Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, USA. .,Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, USA.
| | - Mohan Pammi
- Section of Neonatology, Department of Pediatrics, Baylor College of Medicine and Texas Children’s Hospital, Houston, Texas
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3
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Thaiparambil J, Dong J, Grimm SL, Perera D, Ambati CSR, Putluri V, Robertson MJ, Patel TD, Mistretta B, Gunaratne PH, Kim MP, Yustein JT, Putluri N, Coarfa C, El‐Zein R. Integrative metabolomics and transcriptomics analysis reveals novel therapeutic vulnerabilities in lung cancer. Cancer Med 2022; 12:584-596. [PMID: 35676822 PMCID: PMC9844651 DOI: 10.1002/cam4.4933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/22/2022] [Accepted: 05/04/2022] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Non-small cell lung cancer (NSCLC) comprises the majority (~85%) of all lung tumors, with lung adenocarcinoma (LUAD) and squamous cell carcinoma (LUSC) being the most frequently diagnosed histological subtypes. Multi-modal omics profiling has been carried out in NSCLC, but no studies have yet reported a unique metabolite-related gene signature and altered metabolic pathways associated with LUAD and LUSC. METHODS We integrated transcriptomics and metabolomics to analyze 30 human lung tumors and adjacent noncancerous tissues. Differential co-expression was used to identify modules of metabolites that were altered between normal and tumor. RESULTS We identified unique metabolite-related gene signatures specific for LUAD and LUSC and key pathways aberrantly regulated at both transcriptional and metabolic levels. Differential co-expression analysis revealed that loss of coherence between metabolites in tumors is a major characteristic in both LUAD and LUSC. We identified one metabolic onco-module gained in LUAD, characterized by nine metabolites and 57 metabolic genes. Multi-omics integrative analysis revealed a 28 metabolic gene signature associated with poor survival in LUAD, with six metabolite-related genes as individual prognostic markers. CONCLUSIONS We demonstrated the clinical utility of this integrated metabolic gene signature in LUAD by using it to guide repurposing of AZD-6482, a PI3Kβ inhibitor which significantly inhibited three genes from the 28-gene signature. Overall, we have integrated metabolomics and transcriptomics analyses to show that LUAD and LUSC have distinct profiles, inferred gene signatures with prognostic value for patient survival, and identified therapeutic targets and repurposed drugs for potential use in NSCLC treatment.
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Affiliation(s)
| | - Jianrong Dong
- Center for Precision and Environmental HealthBaylor College of MedicineHoustonTexasUSA,Molecular and Cellular Biology DepartmentBaylor College of MedicineHoustonTexasUSA
| | - Sandra L. Grimm
- Center for Precision and Environmental HealthBaylor College of MedicineHoustonTexasUSA,Dan L Duncan Comprehensive Cancer CenterBaylor College of MedicineHoustonTexasUSA,Advanced Technology CoresBaylor College of MedicineHoustonTexasUSA
| | - Dimuthu Perera
- Advanced Technology CoresBaylor College of MedicineHoustonTexasUSA
| | | | - Vasanta Putluri
- Advanced Technology CoresBaylor College of MedicineHoustonTexasUSA
| | - Matthew J. Robertson
- Dan L Duncan Comprehensive Cancer CenterBaylor College of MedicineHoustonTexasUSA,Advanced Technology CoresBaylor College of MedicineHoustonTexasUSA
| | - Tajhal D. Patel
- Texas Children’s Cancer and Hematology Centers and The Faris D. Virani Ewing Sarcoma CenterBaylor College of MedicineHoustonTexasUSA
| | - Brandon Mistretta
- Department of Biology and BiochemistryUniversity of HoustonHoustonTexasUSA
| | - Preethi H. Gunaratne
- Molecular and Cellular Biology DepartmentBaylor College of MedicineHoustonTexasUSA,Department of Biology and BiochemistryUniversity of HoustonHoustonTexasUSA
| | - Min P. Kim
- Houston Methodist Cancer CenterHoustonTexasUSA,Division of Thoracic Surgery, Department of SurgeryHouston Methodist HospitalHoustonTexasUSA
| | - Jason T. Yustein
- Molecular and Cellular Biology DepartmentBaylor College of MedicineHoustonTexasUSA,Dan L Duncan Comprehensive Cancer CenterBaylor College of MedicineHoustonTexasUSA,Texas Children’s Cancer and Hematology Centers and The Faris D. Virani Ewing Sarcoma CenterBaylor College of MedicineHoustonTexasUSA,Integrative Molecular and Biological Sciences ProgramBaylor College of MedicineHoustonTexasUSA
| | - Nagireddy Putluri
- Molecular and Cellular Biology DepartmentBaylor College of MedicineHoustonTexasUSA,Advanced Technology CoresBaylor College of MedicineHoustonTexasUSA
| | - Cristian Coarfa
- Center for Precision and Environmental HealthBaylor College of MedicineHoustonTexasUSA,Molecular and Cellular Biology DepartmentBaylor College of MedicineHoustonTexasUSA,Dan L Duncan Comprehensive Cancer CenterBaylor College of MedicineHoustonTexasUSA,Advanced Technology CoresBaylor College of MedicineHoustonTexasUSA
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Abstract
[Figure: see text].
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Affiliation(s)
- Huanan Shi
- Department of Anesthesiology, Baylor College of Medicine,
Houston TX, USA
- Department of Molecular Physiology and Biophysics, Baylor
College of Medicine, Houston TX, USA
| | - Bojun Zhang
- Department of Anesthesiology, Baylor College of Medicine,
Houston TX, USA
| | - Taylor Abo-Hamzy
- School of Health Professions, Baylor College of Medicine,
Houston TX, USA
| | - James W. Nelson
- Department of Anesthesiology, Baylor College of Medicine,
Houston TX, USA
- Integrated Molecular and Biomedical Sciences Graduate
Program, Baylor College of Medicine, Houston TX, USA
| | | | - Joseph F. Petrosino
- Department of Molecular Virology and Microbiology, The
Alkek Center for Metagenomics and Microbiome Research, Baylor College of Medicine,
Houston TX, USA
| | - Robert M. Bryan
- Department of Anesthesiology, Baylor College of Medicine,
Houston TX, USA
- Department of Molecular Physiology and Biophysics, Baylor
College of Medicine, Houston TX, USA
| | - David J. Durgan
- Department of Anesthesiology, Baylor College of Medicine,
Houston TX, USA
- Department of Molecular Physiology and Biophysics, Baylor
College of Medicine, Houston TX, USA
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5
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Treviño LS, Dong J, Kaushal A, Katz TA, Jangid RK, Robertson MJ, Grimm SL, Ambati CSR, Putluri V, Cox AR, Kim KH, May TD, Gallo MR, Moore DD, Hartig SM, Foulds CE, Putluri N, Coarfa C, Walker CL. Epigenome environment interactions accelerate epigenomic aging and unlock metabolically restricted epigenetic reprogramming in adulthood. Nat Commun 2020; 11:2316. [PMID: 32385268 PMCID: PMC7210260 DOI: 10.1038/s41467-020-15847-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 03/19/2020] [Indexed: 12/13/2022] Open
Abstract
Our early-life environment has a profound influence on developing organs that impacts metabolic function and determines disease susceptibility across the life-course. Using a rat model for exposure to an endocrine disrupting chemical (EDC), we show that early-life chemical exposure causes metabolic dysfunction in adulthood and reprograms histone marks in the developing liver to accelerate acquisition of an adult epigenomic signature. This epigenomic reprogramming persists long after the initial exposure, but many reprogrammed genes remain transcriptionally silent with their impact on metabolism not revealed until a later life exposure to a Western-style diet. Diet-dependent metabolic disruption was largely driven by reprogramming of the Early Growth Response 1 (EGR1) transcriptome and production of metabolites in pathways linked to cholesterol, lipid and one-carbon metabolism. These findings demonstrate the importance of epigenome:environment interactions, which early in life accelerate epigenomic aging, and later in adulthood unlock metabolically restricted epigenetic reprogramming to drive metabolic dysfunction. Early life exposure to environmental stressors, including endocrine disrupting chemicals (EDCs), can impact health later in life. Here, the authors show that neonatal EDC exposure in rats causes epigenetic reprogramming in the liver, which is transcriptionally silent until animals are placed on a Western-style diet.
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Affiliation(s)
- Lindsey S Treviño
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Division of Health Equities, Department of Population Sciences, City of Hope, Duarte, CA, 91010, USA
| | - Jianrong Dong
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Ahkilesh Kaushal
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Tiffany A Katz
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Rahul Kumar Jangid
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Matthew J Robertson
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sandra L Grimm
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Chandra Shekar R Ambati
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Vasanta Putluri
- Advanced Technology Cores, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Aaron R Cox
- Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Kang Ho Kim
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Thaddeus D May
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Morgan R Gallo
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA
| | - David D Moore
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Sean M Hartig
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Charles E Foulds
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA.,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA.,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Nagireddy Putluri
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Cristian Coarfa
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA. .,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA.
| | - Cheryl Lyn Walker
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Medicine, Baylor College of Medicine, Houston, TX, 77030, USA. .,Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA. .,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.
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Xiong J, He J, Xie WP, Hinojosa E, Ambati CSR, Putluri N, Kim HE, Zhu MX, Du G. Rapid affinity purification of intracellular organelles using a twin strep tag. J Cell Sci 2019; 132:jcs.235390. [PMID: 31780580 DOI: 10.1242/jcs.235390] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 11/15/2019] [Indexed: 12/19/2022] Open
Abstract
Cells are internally organized into compartmentalized organelles that execute specialized functions. To understand the functions of individual organelles and their regulations, it is critical to resolve the compositions of individual organelles, which relies on a rapid and efficient isolation method for specific organellar populations. Here, we introduce a robust affinity purification method for rapid isolation of intracellular organelles (e.g. lysosomes, mitochondria and peroxisomes) by taking advantage of the extraordinarily high affinity between the twin strep tag and streptavidin variants. With this method, we can isolate desired organelles with high purity and yield in 3 min from the post-nuclear supernatant of mammalian cells or less than 8 min for the whole purification process. Using lysosomes as an example, we show that the rapid procedure is especially useful for studying transient and fast cellular activities, such as organelle-initiated signaling and organellar contents of small-molecular metabolites. Therefore, our method offers a powerful tool to dissect spatiotemporal regulation and functions of intracellular organelles.
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Affiliation(s)
- Jian Xiong
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Jingquan He
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Wendy P Xie
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Ezekiel Hinojosa
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Chandra Shekar R Ambati
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX 77030, USA
| | - Nagireddy Putluri
- Dan L. Duncan Cancer Center, Advanced Technology Core, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX 77030, USA.,Department of Molecular & Cell Biology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hyun-Eui Kim
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA.,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Michael X Zhu
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA .,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
| | - Guangwei Du
- Department of Integrative Biology and Pharmacology, McGovern Medical School, The University of Texas Health Science Center at Houston, Houston, TX 77030, USA .,Biochemistry and Cell Biology Program, MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA
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Ambati CSR, Yuan F, Abu-Elheiga LA, Zhang Y, Shetty V. Identification and Quantitation of Malonic Acid Biomarkers of In-Born Error Metabolism by Targeted Metabolomics. J Am Soc Mass Spectrom 2017; 28:929-938. [PMID: 28315235 DOI: 10.1007/s13361-017-1631-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 02/13/2017] [Accepted: 02/17/2017] [Indexed: 06/06/2023]
Abstract
Malonic acid (MA), methylmalonic acid (MMA), and ethylmalonic acid (EMA) metabolites are implicated in various non-cancer disorders that are associated with inborn-error metabolism. In this study, we have slightly modified the published 3-nitrophenylhydrazine (3NPH) derivatization method and applied it to derivatize MA, MMA, and EMA to their hydrazone derivatives, which were amenable for liquid chromatography- mass spectrometry (LC-MS) quantitation. 3NPH was used to derivatize MA, MMA, and EMA, and multiple reaction monitoring (MRM) transitions of the corresponding derivatives were determined by product-ion experiments. Data normalization and absolute quantitation were achieved by using 3NPH derivatized isotopic labeled compounds 13C2-MA, MMA-D3, and EMA-D3. The detection limits were found to be at nanomolar concentrations and a good linearity was achieved from nanomolar to millimolar concentrations. As a proof of concept study, we have investigated the levels of malonic acids in mouse plasma with malonyl-CoA decarboxylase deficiency (MCD-D), and we have successfully applied 3NPH method to identify and quantitate all three malonic acids in wild type (WT) and MCD-D plasma with high accuracy. The results of this method were compared with that of underivatized malonic acid standards experiments that were performed using hydrophilic interaction liquid chromatography (HILIC)-MRM. Compared with HILIC method, 3NPH derivatization strategy was found to be very efficient to identify these molecules as it greatly improved the sensitivity, quantitation accuracy, as well as peak shape and resolution. Furthermore, there was no matrix effect in LC-MS analysis and the derivatized metabolites were found to be very stable for longer time. Graphical Abstract ᅟ.
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Affiliation(s)
- Chandra Shekar R Ambati
- Metabolomics Core Facility, Molecular and Cellular Biology, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Furong Yuan
- Department of Biochemistry, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Lutfi A Abu-Elheiga
- Department of Biochemistry, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Yiqing Zhang
- Metabolomics Core Facility, Molecular and Cellular Biology, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Vivekananda Shetty
- Metabolomics Core Facility, Molecular and Cellular Biology, Alkek Center for Molecular Discovery, Baylor College of Medicine, Houston, TX, 77030, USA.
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