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Razavi AC, Bazzano LA, He J, Whelton SP, Rebholz CM, Fernandez C, Krousel-Wood M, Li C, Shi M, Nierenberg JL, Li S, Kinchen J, Mi X, Kelly TN. Race modifies the association between animal protein metabolite 1-methylhistidine and blood pressure in middle-aged adults: the Bogalusa Heart Study. J Hypertens 2020; 38:2435-2442. [PMID: 32649643 PMCID: PMC8091549 DOI: 10.1097/hjh.0000000000002571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE Dietary factors mediate racial disparities in hypertension. However, the physiological mechanisms underlying this relationship are incompletely understood. We sought to assess the association between 1-methylhistidine (1-MH), a metabolite marker of animal protein consumption, and blood pressure (BP) in a community-based cohort of black and white middle-aged adults. METHODS This analysis consisted of 655 participants of the Bogalusa Heart Study (25% black, 61% women, aged 34-58 years) who were not taking antihypertensive medication. Fasting serum 1-MH was measured using liquid chromatography-tandem mass spectroscopy. Animal food intakes were quantified by food-frequency questionnaires. Multivariable linear regression assessed the association between 1-MH and BP in combined and race-stratified analyses, adjusting for demographic, dietary, and cardiometabolic factors. RESULTS A significant dose--response relationship was observed for the association of red meat (P-trend <0.01) and poultry (P-trend = 0.03) intake with serum 1-MH among all individuals. Serum 1-MH, per standard deviation increase, had a significant positive association with SBP (β=3.4 ± 1.6 mmHg, P = 0.04) and DBP (β=2.0 ± 1.1 mmHg, P = 0.05) in black participants, whereas no appreciable association was observed in white participants. Among a subgroup of black participants with repeat outcome measures (median follow-up = 3.0 years), one standard deviation increase in 1-MH conferred a 3.1 and 2.2 mmHg higher annual increase in SBP (P = 0.03) and DBP (P = 0.03), respectively. CONCLUSION Serum 1-MH associates with higher SBP and DBP in blacks, but not whites. These results suggest a utility for further assessing the role of dietary 1-MH among individuals with hypertension to help minimize racial disparities in cardiovascular health.
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Affiliation(s)
- Alexander C Razavi
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine.,Department of Medicine, Tulane University School of Medicine
| | - Lydia A Bazzano
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine.,Department of Medicine, Tulane University School of Medicine
| | - Jiang He
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine.,Department of Medicine, Tulane University School of Medicine
| | - Seamus P Whelton
- The Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine
| | - Casey M Rebholz
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Camilo Fernandez
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine.,Department of Medicine, Tulane University School of Medicine
| | - Marie Krousel-Wood
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine.,Department of Medicine, Tulane University School of Medicine
| | - Changwei Li
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
| | - Mengyao Shi
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
| | - Jovia L Nierenberg
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
| | - Shengxu Li
- Children's Minnesota Research Institute, Children's Hospitals & Clinics of Minnesota, Minneapolis, Minnesota
| | | | - Xuenan Mi
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
| | - Tanika N Kelly
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine
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Razavi AC, Bazzano LA, He J, Li S, Fernandez C, Whelton SP, Krousel-Wood M, Nierenberg JL, Shi M, Li C, Mi X, Kinchen J, Kelly TN. Pseudouridine and N-formylmethionine associate with left ventricular mass index: Metabolome-wide association analysis of cardiac remodeling. J Mol Cell Cardiol 2020; 140:22-29. [PMID: 32057737 DOI: 10.1016/j.yjmcc.2020.02.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 02/06/2020] [Accepted: 02/09/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Heart failure (HF) is the fastest growing form of cardiovascular disease both nationally and globally, underlining a need to phenotype subclinical HF intermediaries to improve primary prevention. OBJECTIVES We aimed to identify novel metabolite associations with left ventricular (LV) remodeling, one upstream HF intermediary, among a community-based cohort of individuals. METHODS We examined 1052 Bogalusa Heart Study participants (34.98% African American, 57.41% female, aged 33.6-57.5 years). Measures of LV mass and relative wall thickness (RWT) were obtained using two-dimensional-guided echocardiographic measurements via validated eqs. LV mass was indexed to height2.7 to calculate left ventricular mass index (LVMI). Untargeted metabolomic analysis of fasting serum samples was conducted. In combined and ethnicity-stratified analyses, multivariable linear and multinomial logistic regression models tested the associations of metabolites with the continuous LVMI and RWT and categorical LV geometry phenotypes, respectively, after adjusting for demographic and traditional cardiovascular disease risk factors. RESULTS Pseudouridine (B = 1.38; p = 3.20 × 10-5) and N-formylmethionine (B = 1.65; 3.30 × 10-6) were significantly associated with LVMI in the overall sample as well significant in Caucasians, with consistent effect direction and nominal significance (p < .05) in African Americans. Upon exclusion of individuals with self-report myocardial infarction or congestive HF, we similarly observed a 1.33 g/m2.7 and 1.52 g/m2.7 higher LVMI for each standard deviation increase in pseudouridine and N-formylmethionine, respectively. No significant associations were observed for metabolites with RWT or categorical LV remodeling outcomes. CONCLUSIONS The current analysis identified novel associations of pseudouridine and N-formylmethionine with LVMI, suggesting that mitochondrial-derived metabolites may serve as early biomarkers for LV remodeling and subclinical HF.
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Affiliation(s)
- Alexander C Razavi
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America; Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States of America
| | - Lydia A Bazzano
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America; Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States of America
| | - Jiang He
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America; Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States of America
| | - Shengxu Li
- Children's Minnesota Research Institute, Children's Hospitals & Clinics of Minnesota, Minneapolis, MN, United States of America
| | - Camilo Fernandez
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America; Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States of America
| | - Seamus P Whelton
- The Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, MD, United States of America
| | - Marie Krousel-Wood
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America; Department of Medicine, Tulane University School of Medicine, New Orleans, LA, United States of America
| | - Jovia L Nierenberg
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
| | - Mengyao Shi
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
| | - Changwei Li
- Department of Epidemiology and Biostatistics, University of Georgia College of Public Health, Athens, GA, United States of America
| | - Xuenan Mi
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America
| | - Jason Kinchen
- Metabolon, Inc., Durham, NC, United States of America
| | - Tanika N Kelly
- Department of Epidemiology, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, United States of America.
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Razavi AC, Bazzano LA, He J, Fernandez C, Whelton SP, Krousel-Wood M, Li S, Nierenberg JL, Shi M, Li C, Mi X, Kinchen J, Kelly TN. Novel Findings From a Metabolomics Study of Left Ventricular Diastolic Function: The Bogalusa Heart Study. J Am Heart Assoc 2020; 9:e015118. [PMID: 31992159 PMCID: PMC7033875 DOI: 10.1161/jaha.119.015118] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Background Diastolic dysfunction is one important causal factor for heart failure with preserved ejection fraction, yet the metabolic signature associated with this subclinical phenotype remains unknown. Methods and Results Ultra‐high‐performance liquid chromatography–tandem mass spectroscopy was used to conduct untargeted metabolomic analysis of fasting serum samples in 1050 white and black participants of the BHS (Bogalusa Heart Study). After quality control, 1202 metabolites were individually tested for association with 5 echocardiographic measures of left ventricular diastolic function using multivariable‐adjusted linear regression. Measures of left ventricular diastolic function included the ratio of peak early filling velocity to peak late filling velocity, ratio of peak early filling velocity to mitral annular velocity, deceleration time, isovolumic relaxation time, and left atrial maximum volume index (LAVI). Analyses adjusted for multiple cardiovascular disease risk factors and used Bonferroni‐corrected alpha thresholds. Eight metabolites robustly associated with left ventricular diastolic function in the overall population and demonstrated consistent associations in white and black study participants. N‐formylmethionine (B=0.05; P=1.50×10−7); 1‐methylhistidine (B=0.05; P=1.60×10−7); formiminoglutamate (B=0.07; P=5.60×10−7); N2, N5‐diacetylornithine (B=0.05; P=1.30×10−7); N‐trimethyl 5‐aminovalerate (B=0.04; P=5.10×10−6); 5‐methylthioadenosine (B=0.04; P=1.40×10−5); and methionine sulfoxide (B=0.04; P=3.80×10−6) were significantly associated with the natural log of the ratio of peak early filling velocity to mitral annular velocity. Butyrylcarnitine (B=3.18; P=2.10×10−6) was significantly associated with isovolumic relaxation time. Conclusions The current study identified novel findings of metabolite associations with left ventricular diastolic function, suggesting that the serum metabolome, and its underlying biological pathways, may be implicated in heart failure with preserved ejection fraction pathogenesis.
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Affiliation(s)
- Alexander C Razavi
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Department of Medicine Tulane University School of Medicine New Orleans LA
| | - Lydia A Bazzano
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Department of Medicine Tulane University School of Medicine New Orleans LA
| | - Jiang He
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Department of Medicine Tulane University School of Medicine New Orleans LA
| | - Camilo Fernandez
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Department of Medicine Tulane University School of Medicine New Orleans LA
| | - Seamus P Whelton
- The Ciccarone Center for the Prevention of Heart Disease Johns Hopkins University School of Medicine Baltimore MD
| | - Marie Krousel-Wood
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA.,Department of Medicine Tulane University School of Medicine New Orleans LA
| | - Shengxu Li
- Children's Minnesota Research Institute Children's Hospitals & Clinics of Minnesota Minneapolis MN
| | - Jovia L Nierenberg
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA
| | - Mengyao Shi
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA
| | - Changwei Li
- Department of Epidemiology and Biostatistics University of Georgia College of Public Health Athens GA
| | - Xuenan Mi
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA
| | | | - Tanika N Kelly
- Department of Epidemiology Tulane University School of Public Health and Tropical Medicine New Orleans LA
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Razavi AC, Fernandez C, Bazzano LA, He J, Krousel-Wood MA, Nierenberg J, Shi M, Li C, Mi X, Li S, Kinchen J, Whelton SP, Kelly TN. Abstract P1125: Serum Metabolite 1-Methylhistidine, a Marker of Red Meat and Poultry Consumption, Independently Associates With Increases in Systolic and Diastolic Blood Pressure in Middle-Aged Adults. Hypertension 2019. [DOI: 10.1161/hyp.74.suppl_1.p1125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Red meat consumption associates with heightened cardiometabolic risk. Urinary metabolite 1-methylhistidine (1-MTH) has been shown to correlate with red meat, poultry, and to a lesser extent fish consumption, serving as a quantitative biological marker of intake. We aimed to confirm this relationship and assess the novel role of serum 1-MTH in blood pressure (BP) among a biracial (African American-White) community-based cohort of middle-aged adults.
Methods:
This study consisted of 655 participants of the Bogalusa Heart Study (25.0% African-American, 60.8% female, aged 33.6-58.1 years) not taking antihypertensive medication. From 2013-2018, systolic and diastolic BP were recorded using an oscillometric method. Fasting serum 1-MTH was quantified using liquid chromatography-tandem mass spectroscopy using a median standardized scale. Red meat, poultry, and fish intake were quantified by food-frequency questionnaires. Analyses of animal food consumption with 1-MTH were performed using bivariate linear regression. Multivariable linear regression assessed the independent association of 1-MTH with systolic and diastolic BP in combined and race-stratified analyses, adjusting for a wide variety of traditional demographic, dietary and cardiometabolic risk factors.
Results:
Red meat (B=0.004; p=0.001) and poultry (B=0.005; p=0.05), but not fish intake, were significantly associated with serum 1-MTH. Serum 1-MTH had a significant positive association with both systolic (B=10.45, p=0.04) and diastolic BP (B=6.44, p=0.04) consistently in African-Americans, but not Whites. Among a subgroup of 86 individuals who were normotensive at baseline with repeat outcome measures (median follow-up time=2.98 years), we observed a 5.30 and 5.13 mmHg per-year increase in systolic (p=0.03) and diastolic BP (p=0.002), respectively, for every one unit increase in serum 1-MTH.
Conclusion:
Red meat and poultry intake correlate with serum 1-MTH. Notably, serum 1-MTH independently associates with considerable increases in systolic and diastolic BP, more consistently in African-Americans compared to Whites. These findings may aid in strengthening cardiometabolic prevention efforts via dietary recommendations, in a race-specific fashion.
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Affiliation(s)
| | | | | | - Jiang He
- Tulane Univ Sch of Medicine, New Orleans, LA
| | | | - Jovia Nierenberg
- Tulane Univ Sch of Public Health and Tropical Medicine, New Orleans, LA
| | - Mengyao Shi
- Tulane Univ Sch of Public Health and Tropical Medicine, New Orleans, LA
| | - Changwei Li
- Tulane Univ Sch of Public Health and Tropical Medicine, New Orleans, LA
| | - Xuenan Mi
- Tulane Univ Sch of Public Health and Tropical Medicine, New Orleans, LA
| | - Shengxu Li
- Tulane Univ Sch of Public Health and Tropical Medicine, New Orleans, LA
| | | | - Seamus P Whelton
- The Ciccarone Cntr for the Prevention of Heart Disease, Johns Hopkins Univ Sch of Medicine, Baltimore, MD
| | - Tanika N Kelly
- Tulane Univ Sch of Public Health and Tropical Medicine, New Orleans, LA
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Sun T, Lee B, Kinchen J, Wang ET, Gonzalez TL, Chan JL, Rotter JI, Chen YDI, Taylor K, Goodarzi MO, Rich SS, Farber CR, Williams J, Pisarska MD. Differences in First-Trimester Maternal Metabolomic Profiles in Pregnancies Conceived From Fertility Treatments. J Clin Endocrinol Metab 2019; 104:1005-1019. [PMID: 30445606 PMCID: PMC6373171 DOI: 10.1210/jc.2018-01118] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Accepted: 11/12/2018] [Indexed: 02/06/2023]
Abstract
CONTEXT Maternal metabolic status reflects underlying physiological changes in the maternal-placental-fetal unit that may help identify contributors to adverse pregnancy outcomes associated with infertility and treatments used. OBJECTIVE To determine if maternal metabolomic profiles differ between spontaneous pregnancies and pregnancies conceived with fertility treatments that may explain the differences in pregnancy outcomes. DESIGN Metabolon metabolomic analysis and ELISAs for 17-β-estradiol and progesterone were performed during the late first trimester of pregnancy. SETTING Academic institution. SUBJECTS Women in the Spontaneous/Medically Assisted/Assisted Reproductive Technology cohort (N = 409), 208 of whom conceived spontaneously and 201 with infertility [non in vitro fertilization treatments (NIFT), n=90; in vitro fertilization (IVF), n=111]. INTERVENTION Mode of conception. MAIN OUTCOME MEASURES Levels of of 806 metabolites within eight superpathways, 17-β-estradiol, and progesterone in maternal plasma in the late first trimester. RESULTS Metabolomic differences in the lipid superpathway (i.e., steroid metabolites, lipids with docosahexaenoyl acyl chains, acyl cholines), and xanthine and benzoate metabolites (P < 0.05) were significant among the spontaneous and two infertility groups, with greatest differences between the spontaneous and IVF groups. 17-β-estradiol and progesterone levels were significantly elevated in the infertility groups, with greatest differences between the spontaneous and IVF groups. CONCLUSION Metabolomic profiles differ between spontaneous and infertility pregnancies, likely driven by IVF. Higher levels of steroids and their metabolites are likely due to increased hormone production from placenta reprogrammed from fertility treatments, which may contribute to adverse outcomes associated with infertility and the treatments used.
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Affiliation(s)
- Tianyanxin Sun
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Bora Lee
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | | | - Erica T Wang
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
- David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
| | - Tania L Gonzalez
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jessica L Chan
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Jerome I Rotter
- LA Biomed/Harbor-University of California, Los Angeles Medical Center, Torrance, California
| | - Yii-Der Ida Chen
- LA Biomed/Harbor-University of California, Los Angeles Medical Center, Torrance, California
| | - Kent Taylor
- LA Biomed/Harbor-University of California, Los Angeles Medical Center, Torrance, California
| | - Mark O Goodarzi
- David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, California
| | - Stephen S Rich
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - Charles R Farber
- Center for Public Health Genomics, University of Virginia, Charlottesville, Virginia
| | - John Williams
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
- David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
| | - Margareta D Pisarska
- Division of Reproductive Endocrinology and Infertility, Center for Reproductive Medicine, Cedars-Sinai Medical Center, Los Angeles, California
- David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, California
- Correspondence and Reprint Requests: Margareta D. Pisarska, MD, Cedars-Sinai Medical Center, 8635 West Third Street, Suite 160, Los Angeles, California 90048. E-mail:
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Kamarajan P, Rajendiran TM, Kinchen J, Bermúdez M, Danciu T, Kapila YL. Head and Neck Squamous Cell Carcinoma Metabolism Draws on Glutaminolysis, and Stemness Is Specifically Regulated by Glutaminolysis via Aldehyde Dehydrogenase. J Proteome Res 2017; 16:1315-1326. [PMID: 28168879 DOI: 10.1021/acs.jproteome.6b00936] [Citation(s) in RCA: 31] [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] [Indexed: 02/08/2023]
Abstract
Cancer cells use alternate energetic pathways; however, cancer stem cell (CSC) metabolic energetic pathways are unknown. The purpose of this study was to define the metabolic characteristics of head and neck cancer at different points of its pathogenesis with a focus on its CSC compartment. UPLC-MS/MS-profiling and GC-MS-validation studies of human head and neck cancer tissue, saliva, and plasma were used in conjunction with in vitro and in vivo models to carry out this investigation. We identified metabolite biomarker panels that distinguish head and neck cancer from healthy controls, and confirmed involvement of glutamate and glutaminolysis. Glutaminase, which catalyzes glutamate formation from glutamine, and aldehyde dehydrogenase (ALDH), a stemness marker, were highly expressed in primary and metastatic head and neck cancer tissues, tumorspheres, and CSC versus controls. Exogenous glutamine induced stemness via glutaminase, whereas inhibiting glutaminase suppressed stemness in vitro and tumorigenesis in vivo. Head and neck CSC (CD44hi/ALDHhi) exhibited higher glutaminase, glutamate, and sphere levels than CD44lo/ALDHlo cells. Glutaminase drove transcriptional and translational ALDH expression, and glutamine directed even CD44lo/ALDHlo cells toward stemness. Glutaminolysis regulates tumorigenesis and CSC metabolism via ALDH. These findings indicate that glutamate is an important marker of cancer metabolism whose regulation via glutaminase works in concert with ALDH to mediate cancer stemness. Future analyses of glutaminolytic-ALDH driven mechanisms underlying tumorigenic transitions may help in the development of targeted therapies for head and neck cancer and its CSC compartment.
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Affiliation(s)
- Pachiyappan Kamarajan
- Department of Orofacial Sciences, UCSF School of Dentistry, University of California, San Francisco , California 94110, United States
| | | | - Jason Kinchen
- Metabolon, Inc. , Durham, North Carolina 27713, United States
| | - Mercedes Bermúdez
- FES Zaragoza, National Autonomous University of Mexico , Mexico City, 09320, Mexico
| | | | - Yvonne L Kapila
- Department of Orofacial Sciences, UCSF School of Dentistry, University of California, San Francisco , California 94110, United States
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Espinosa-Jeffrey A, Nguyen K, Kumar S, Toshimasa O, Hirose R, Reue K, Vergnes L, Kinchen J, Vellis JD. Simulated microgravity enhances oligodendrocyte mitochondrial function and lipid metabolism. J Neurosci Res 2016; 94:1434-1450. [PMID: 27680492 DOI: 10.1002/jnr.23958] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 06/09/2016] [Revised: 09/06/2016] [Accepted: 09/06/2016] [Indexed: 01/01/2023]
Abstract
The primary energy sources of mammalian cells are proteins, fats, and sugars that are processed by well-known biochemical mechanisms that have been discovered and studied in 1G (terrestrial gravity). Here we sought to determine how simulated microgravity (sim-µG) impacts both energy and lipid metabolism in oligodendrocytes (OLs), the myelin-forming cells in the central nervous system. We report increased mitochondrial respiration and increased glycolysis 24 hr after exposure to sim-µG. Moreover, examination of the secretome after 3 days' exposure of OLs to sim-µG increased the Krebs cycle (Krebs and Weitzman, ) flux in sim-µG. The secretome study also revealed a significant increase in the synthesis of fatty acids and complex lipids such as 1,2-dipalmitoyl-GPC (5.67); lysolipids like 1-oleoyl-GPE (4.48) were also increased by microgravity. Although longer-chain lipids were not observed in this study, it is possible that at longer time points OLs would have continued moving forward toward the synthesis of lipids that constitute myelin. For centuries, basic developmental biology research has been the pillar of an array of discoveries that have led to clinical applications; we believe that studies using microgravity will open new avenues to our understanding of the brain in health and disease-in particular, to the discovery of new molecules and mechanisms impossible to unveil while in 1G. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Araceli Espinosa-Jeffrey
- Intellectual and Developmental Disabilities Research Center, Semel Institute for Neuroscience and Human Behavior, Departments of Neurobiology, Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California.
| | - Kevin Nguyen
- Intellectual and Developmental Disabilities Research Center, Semel Institute for Neuroscience and Human Behavior, Departments of Neurobiology, Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Shalini Kumar
- Intellectual and Developmental Disabilities Research Center, Semel Institute for Neuroscience and Human Behavior, Departments of Neurobiology, Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Ochiai Toshimasa
- Space Systems Engineering Department, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, LTD, Kobe, Japan
| | - Ryuji Hirose
- Space Systems Engineering Department, Integrated Defense & Space Systems, Mitsubishi Heavy Industries, LTD, Kobe, Japan
| | - Karen Reue
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California.,Molecular Biology Institute, University of California, Los Angeles, Los Angeles, California
| | - Laurent Vergnes
- Department of Human Genetics, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California
| | - Jason Kinchen
- Intellectual and Developmental Disabilities Research Center, Semel Institute for Neuroscience and Human Behavior, Departments of Neurobiology, Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California
| | - Jean de Vellis
- Intellectual and Developmental Disabilities Research Center, Semel Institute for Neuroscience and Human Behavior, Departments of Neurobiology, Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine at UCLA, Los Angeles, California
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Smith S, Gregory J, Zeisel S, Ueland P, Gibson C, Mader T, Kinchen J, Ploutz‐Snyder R, Zwart S. Vision Issues and Space Flight: Evaluation of One‐Carbon Metabolism Polymorphisms. FASEB J 2015. [DOI: 10.1096/fasebj.29.1_supplement.134.1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | | | | | | | - C Gibson
- Coastal Eye AssociatesUnited States
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