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Sugino KY, Janssen RC, McMahan RH, Zimmerman C, Friedman JE, Jonscher KR. Vertical Transfer of Maternal Gut Microbes to Offspring of Western Diet-Fed Dams Drives Reduced Levels of Tryptophan Metabolites and Postnatal Innate Immune Response. Nutrients 2024; 16:1808. [PMID: 38931163 PMCID: PMC11206590 DOI: 10.3390/nu16121808] [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: 05/09/2024] [Revised: 06/04/2024] [Accepted: 06/06/2024] [Indexed: 06/28/2024] Open
Abstract
Maternal obesity and/or Western diet (WD) is associated with an increased risk of metabolic dysfunction-associated steatotic liver disease (MASLD) in offspring, driven, in part, by the dysregulation of the early life microbiome. Here, using a mouse model of WD-induced maternal obesity, we demonstrate that exposure to a disordered microbiome from WD-fed dams suppressed circulating levels of endogenous ligands of the aryl hydrocarbon receptor (AHR; indole, indole-3-acetate) and TMAO (a product of AHR-mediated transcription), as well as hepatic expression of Il10 (an AHR target), in offspring at 3 weeks of age. This signature was recapitulated by fecal microbial transfer from WD-fed pregnant dams to chow-fed germ-free (GF) lactating dams following parturition and was associated with a reduced abundance of Lactobacillus in GF offspring. Further, the expression of Il10 was downregulated in liver myeloid cells and in LPS-stimulated bone marrow-derived macrophages (BMDM) in adult offspring, suggestive of a hypo-responsive, or tolerant, innate immune response. BMDMs from adult mice lacking AHR in macrophages exhibited a similar tolerogenic response, including diminished expression of Il10. Overall, our study shows that exposure to maternal WD alters microbial metabolites in the offspring that affect AHR signaling, potentially contributing to innate immune hypo-responsiveness and progression of MASLD, highlighting the impact of early life gut dysbiosis on offspring metabolism. Further investigations are warranted to elucidate the complex interplay between maternal diet, gut microbial function, and the development of neonatal innate immune tolerance and potential therapeutic interventions targeting these pathways.
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Affiliation(s)
- Kameron Y. Sugino
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (K.Y.S.); (R.C.J.); (J.E.F.)
| | - Rachel C. Janssen
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (K.Y.S.); (R.C.J.); (J.E.F.)
| | - Rachel H. McMahan
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Chelsea Zimmerman
- Department of Pediatrics, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Jacob E. Friedman
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (K.Y.S.); (R.C.J.); (J.E.F.)
- Department of Biochemistry and Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Karen R. Jonscher
- Harold Hamm Diabetes Center, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA; (K.Y.S.); (R.C.J.); (J.E.F.)
- Department of Biochemistry and Physiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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2
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Murray KO, Maurer GS, Gioscia-Ryan RA, Zigler MC, Ludwig KR, D'Alessandro A, Reisz JA, Rossman MJ, Seals DR, Clayton ZS. The plasma metabolome is associated with preservation of physiological function following lifelong aerobic exercise in mice. GeroScience 2024; 46:3311-3324. [PMID: 38265578 PMCID: PMC11009171 DOI: 10.1007/s11357-024-01062-x] [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: 11/07/2023] [Accepted: 01/02/2024] [Indexed: 01/25/2024] Open
Abstract
Declines in physiological function with aging are strongly linked to age-related diseases. Lifelong voluntary aerobic exercise (LVAE) preserves physiological function with aging, possibly by increasing cellular quality control processes, but the circulating molecular transducers mediating these processes are incompletely understood. The plasma metabolome may predict biological aging and is impacted by a single bout of aerobic exercise. Here, we conducted an ancillary analysis using plasma samples, and physiological function data, from previously reported studies of LVAE in male C57BL/6N mice randomized to LVAE (wheel running) or sedentary (SED) (n = 8-9/group) to determine if LVAE alters the plasma metabolome and whether these changes correlated with preservation of physiological function with LVAE. Physical function (grip strength, coordination, and endurance) was assessed at 3 and 18 months of age; vascular endothelial function and the plasma metabolome were assessed at 19 months. Physical function was preserved (%decline; mean ± SEM) with LVAE vs SED (all p < 0.05)-grip strength, 0.4 ± 1.7% vs 12 ± 4.0%; coordination, 10 ± 4% vs 73 ± 10%; endurance, 1 ± 15% vs 61 ± 5%. Vascular endothelial function with LVAE (88.2 ± 2.0%) was higher than SED (79.1 ± 2.5%; p = 0.03) and similar to the young controls (91.4 ± 2.9%). Fifteen metabolites were different with LVAE compared to SED (FDR < 0.05) and correlated with the preservation of physiological function. Plasma spermidine, a polyamine that increases cellular quality control (e.g., autophagy), correlated with all assessed physiological indices. Autophagy (LC3A/B abundance) was higher in LVAE skeletal muscle compared to SED (p < 0.01) and inversely correlated with plasma spermidine (r = - 0.5297; p = 0.054). These findings provide novel insight into the circulating molecular transducers by which LVAE may preserve physiological function with aging.
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Affiliation(s)
- Kevin O Murray
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Grace S Maurer
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Rachel A Gioscia-Ryan
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Melanie C Zigler
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Katelyn R Ludwig
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Matthew J Rossman
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA
| | - Zachary S Clayton
- Department of Integrative Physiology, University of Colorado Boulder, 1725 Pleasant Street, 354 UCB, Boulder, CO, 80309, USA.
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3
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Dang K, Gao Y, Wang H, Yang H, Kong Y, Jiang S, Qian A. Integrated metabolomics and proteomics analysis to understand muscle atrophy resistance in hibernating Spermophilus dauricus. Cryobiology 2024; 114:104838. [PMID: 38097057 DOI: 10.1016/j.cryobiol.2023.104838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 12/04/2023] [Accepted: 12/05/2023] [Indexed: 12/18/2023]
Abstract
Hibernating Spermophilus dauricus experiences minor muscle atrophy, which is an attractive anti-disuse muscle atrophy model. Integrated metabolomics and proteomics analysis was performed on the hibernating S. dauricus during the pre-hibernation (PRE) stage, torpor (TOR) stage, interbout arousal (IBA) stage, and post-hibernation (POST) stage. Time course stage transition-based (TOR vs. PRE, IBA vs. TOR, POST vs. IBA) differential expression analysis was performed based on the R limma package. A total of 14 co-differential metabolites were detected. Among these, l-cystathionine, l-proline, ketoleucine, serine, and 1-Hydroxy-3,6,7-Trimethoxy-2, 8-Diprenylxanthone demonstrated the highest levels in the TOR stage; Beta-Nicotinamide adenine dinucleotide, Dihydrozeatin, Pannaric acid, and Propionylcarnitine demonstrated the highest levels in the IBA stage; Adrenosterone, PS (18:0/14,15-EpETE), S-Carboxymethylcysteine, TxB2, and 3-Phenoxybenzylalcohol demonstrated the highest levels in the POST stage. Kyoto Encyclopedia of Genes and Genomes pathways annotation analysis indicated that biosynthesis of amino acids, ATP-binding cassette transporters, and cysteine and methionine metabolism were co-differential metabolism pathways during the different stages of hibernation. The stage-specific metabolism processes and integrated enzyme-centered metabolism networks in the different stages were also deciphered. Overall, our findings suggest that (1) the periodic change of proline, ketoleucine, and serine contributes to the hindlimb lean tissue preservation; and (2) key metabolites related to the biosynthesis of amino acids, ATP-binding cassette transporters, and cysteine and methionine metabolism may be associated with muscle atrophy resistance. In conclusion, our co-differential metabolites, co-differential metabolism pathways, stage-specific metabolism pathways, and integrated enzyme-centered metabolism networks are informative for biologists to generate hypotheses for functional analyses to perturb disuse-induced muscle atrophy.
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Affiliation(s)
- Kai Dang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Yuan Gao
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Huiping Wang
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, 710069, China; China Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Ministry of Education, Xi'an, 710069, China
| | - Huajian Yang
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, 710069, China; China Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Ministry of Education, Xi'an, 710069, China
| | - Yong Kong
- Shaanxi Key Laboratory for Animal Conservation, College of Life Sciences, Northwest University, Xi'an, 710069, China; China Key Laboratory of Resource Biology and Biotechnology in Western China, College of Life Sciences, Northwest University, Ministry of Education, Xi'an, 710069, China
| | - Shanfeng Jiang
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Airong Qian
- Lab for Bone Metabolism, Key Lab for Space Biosciences and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; Research Center for Special Medicine and Health Systems Engineering, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China; NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.
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4
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Hosseini M, Voisin V, Chegini A, Varesi A, Cathelin S, Ayyathan DM, Liu AC, Yang Y, Wang V, Maher A, Grignano E, Reisz JA, D’Alessandro A, Young K, Wu Y, Fiumara M, Ferrari S, Naldini L, Gaiti F, Pai S, Schimmer AD, Bader GD, Dick JE, Xie SZ, Trowbridge JJ, Chan SM. Metformin reduces the clonal fitness of Dnmt3aR878H hematopoietic stem and progenitor cells by reversing their aberrant metabolic and epigenetic state. RESEARCH SQUARE 2024:rs.3.rs-3874821. [PMID: 38405837 PMCID: PMC10889081 DOI: 10.21203/rs.3.rs-3874821/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Clonal hematopoiesis (CH) arises when a hematopoietic stem cell (HSC) acquires a mutation that confers a competitive advantage over wild-type (WT) HSCs, resulting in its clonal expansion. Individuals with CH are at an increased risk of developing hematologic neoplasms and a range of age-related inflammatory illnesses1-3. Therapeutic interventions that suppress the expansion of mutant HSCs have the potential to prevent these CH-related illnesses; however, such interventions have not yet been identified. The most common CH driver mutations are in the DNA methyltransferase 3 alpha (DNMT3A) gene with arginine 882 (R882) being a mutation hotspot. Here we show that murine hematopoietic stem and progenitor cells (HSPCs) carrying the Dnmt3aR878H/+ mutation, which is equivalent to human DNMT3AR882H/+, have increased mitochondrial respiration compared with WT cells and are dependent on this metabolic reprogramming for their competitive advantage. Importantly, treatment with metformin, an oral anti-diabetic drug with inhibitory activity against complex I in the electron transport chain (ETC), reduced the fitness of Dnmt3aR878H/+ HSCs. Through a multi-omics approach, we discovered that metformin acts by enhancing the methylation potential in Dnmt3aR878H/+ HSPCs and reversing their aberrant DNA CpG methylation and histone H3K27 trimethylation (H3K27me3) profiles. Metformin also reduced the fitness of human DNMT3AR882H HSPCs generated by prime editing. Our findings provide preclinical rationale for investigating metformin as a preventive intervention against illnesses associated with DNMT3AR882 mutation-driven CH in humans.
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Affiliation(s)
| | - Veronique Voisin
- Donnelly Centre for Cellular and Biomolecular Research, Toronto, Ontario, Canada
| | - Ali Chegini
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Angelica Varesi
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | | | | | - Alex C.H. Liu
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Yitong Yang
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Vivian Wang
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Abdula Maher
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Eric Grignano
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Julie A. Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Angelo D’Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Kira Young
- The Jackson Laboratory, Bar Harbor, ME, USA
| | - Yiyan Wu
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Martina Fiumara
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, 20132, Italy
- Vita-Salute San Raffaele University, Milan, 20132, Italy
| | - Samuele Ferrari
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, 20132, Italy
- Vita-Salute San Raffaele University, Milan, 20132, Italy
| | - Luigi Naldini
- San Raffaele Telethon Institute for Gene Therapy, IRCCS San Raffaele Scientific Institute, Milan, 20132, Italy
- Vita-Salute San Raffaele University, Milan, 20132, Italy
| | - Federico Gaiti
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Shraddha Pai
- Donnelly Centre for Cellular and Biomolecular Research, Toronto, Ontario, Canada
- Ontario Institute for Cancer Research, Toronto, Ontario, Canada
| | - Aaron D. Schimmer
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
| | - Gary D. Bader
- Donnelly Centre for Cellular and Biomolecular Research, Toronto, Ontario, Canada
| | - John E. Dick
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | | | | | - Steven M. Chan
- Princess Margaret Cancer Centre, Toronto, Ontario, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, Ontario, Canada
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5
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Heinis FI, Alvarez S, Andrews MT. Mass spectrometry of the white adipose metabolome in a hibernating mammal reveals seasonal changes in alternate fuels and carnitine derivatives. Front Physiol 2023; 14:1214087. [PMID: 37449012 PMCID: PMC10337995 DOI: 10.3389/fphys.2023.1214087] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/15/2023] [Indexed: 07/18/2023] Open
Abstract
Mammalian hibernators undergo substantial changes in metabolic function throughout the seasonal hibernation cycle. We report here the polar metabolomic profile of white adipose tissue isolated from active and hibernating thirteen-lined ground squirrels (Ictidomys tridecemlineatus). Polar compounds in white adipose tissue were extracted from five groups representing different timepoints throughout the seasonal activity-torpor cycle and analyzed using hydrophilic interaction liquid chromatography-mass spectrometry in both the positive and negative ion modes. A total of 224 compounds out of 660 features detected after curation were annotated. Unsupervised clustering using principal component analysis revealed discrete clusters representing the different seasonal timepoints throughout hibernation. One-way analysis of variance and feature intensity heatmaps revealed metabolites that varied in abundance between active and torpid timepoints. Pathway analysis compared against the KEGG database demonstrated enrichment of amino acid metabolism, purine metabolism, glycerophospholipid metabolism, and coenzyme A biosynthetic pathways among our identified compounds. Numerous carnitine derivatives and a ketone that serves as an alternate fuel source, beta-hydroxybutyrate (BHB), were among molecules found to be elevated during torpor. Elevated levels of the BHB-carnitine conjugate during torpor suggests the synthesis of beta-hydroxybutyrate in white adipose mitochondria, which may contribute directly to elevated levels of circulating BHB during hibernation.
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Affiliation(s)
- Frazer I. Heinis
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Sophie Alvarez
- Proteomics and Metabolomics Facility, Nebraska Center for Biotechnology, University of Nebraska-Lincoln, Lincoln, NE, United States
| | - Matthew T. Andrews
- School of Natural Resources, University of Nebraska-Lincoln, Lincoln, NE, United States
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6
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De Vrij EL, Bouma HR, Henning RH, Cooper ST. Hibernation and hemostasis. Front Physiol 2023; 14:1207003. [PMID: 37435313 PMCID: PMC10331295 DOI: 10.3389/fphys.2023.1207003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Accepted: 06/12/2023] [Indexed: 07/13/2023] Open
Abstract
Hibernating mammals have developed many physiological adaptations to accommodate their decreased metabolism, body temperature, heart rate and prolonged immobility without suffering organ injury. During hibernation, the animals must suppress blood clotting to survive prolonged periods of immobility and decreased blood flow that could otherwise lead to the formation of potentially lethal clots. Conversely, upon arousal hibernators must be able to quickly restore normal clotting activity to avoid bleeding. Studies in multiple species of hibernating mammals have shown reversible decreases in circulating platelets, cells involved in hemostasis, as well as in protein coagulation factors during torpor. Hibernator platelets themselves also have adaptations that allow them to survive in the cold, while those from non-hibernating mammals undergo lesions during cold exposure that lead to their rapid clearance from circulation when re-transfused. While platelets lack a nucleus with DNA, they contain RNA and other organelles including mitochondria, in which metabolic adaptations may play a role in hibernator's platelet resistance to cold induced lesions. Finally, the breakdown of clots, fibrinolysis, is accelerated during torpor. Collectively, these reversible physiological and metabolic adaptations allow hibernating mammals to survive low blood flow, low body temperature, and immobility without the formation of clots during torpor, yet have normal hemostasis when not hibernating. In this review we summarize blood clotting changes and the underlying mechanisms in multiple species of hibernating mammals. We also discuss possible medical applications to improve cold preservation of platelets and antithrombotic therapy.
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Affiliation(s)
- Edwin L. De Vrij
- Department of Plastic Surgery, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, Netherlands
| | - Hjalmar R. Bouma
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, Netherlands
- Department of Internal Medicine, University Medical Center Groningen, University of Groningen, Groningen, Netherlands
| | - Robert H. Henning
- Department of Clinical Pharmacy and Pharmacology, University Medical Center Groningen, Groningen, Netherlands
| | - Scott T. Cooper
- Biology Department, University of Wisconsin-La Crosse, La Crosse, WI, United States
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7
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Malachowska B, Yang WL, Qualman A, Muro I, Boe DM, Lampe JN, Kovacs EJ, Idrovo JP. Transcriptomics, metabolomics, and in-silico drug predictions for liver damage in young and aged burn victims. Commun Biol 2023; 6:597. [PMID: 37268765 DOI: 10.1038/s42003-023-04964-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Accepted: 05/22/2023] [Indexed: 06/04/2023] Open
Abstract
Burn induces a systemic response affecting multiple organs, including the liver. Since the liver plays a critical role in metabolic, inflammatory, and immune events, a patient with impaired liver often exhibits poor outcomes. The mortality rate after burns in the elderly population is higher than in any other age group, and studies show that the liver of aged animals is more susceptible to injury after burns. Understanding the aged-specific liver response to burns is fundamental to improving health care. Furthermore, no liver-specific therapy exists to treat burn-induced liver damage highlighting a critical gap in burn injury therapeutics. In this study, we analyzed transcriptomics and metabolomics data from the liver of young and aged mice to identify mechanistic pathways and in-silico predict therapeutic targets to prevent or reverse burn-induced liver damage. Our study highlights pathway interactions and master regulators that underlie the differential liver response to burn injury in young and aged animals.
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Affiliation(s)
- Beata Malachowska
- Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Weng-Lang Yang
- Department of Radiation Oncology, Albert Einstein College of Medicine, Bronx, NY, 10461, USA
| | - Andrea Qualman
- Department of Surgery; Division of G.I., Trauma, and Endocrine Surgery, University of Colorado, Aurora, CO, 80045, USA
| | - Israel Muro
- Department of Surgery; Division of G.I., Trauma, and Endocrine Surgery, University of Colorado, Aurora, CO, 80045, USA
| | - Devin M Boe
- Department of Surgery; Division of G.I., Trauma, and Endocrine Surgery, University of Colorado, Aurora, CO, 80045, USA
- Graduate Program in Immunology, University of Colorado, Aurora, CO, 80045, USA
| | - Jed N Lampe
- Department of Pharmaceutical Sciences, Skaggs School of Pharmacy, University of Colorado, Aurora, CO, 80045, USA
| | - Elizabeth J Kovacs
- Department of Surgery; Division of G.I., Trauma, and Endocrine Surgery, University of Colorado, Aurora, CO, 80045, USA
- Graduate Program in Immunology, University of Colorado, Aurora, CO, 80045, USA
- Molecular Biology Program, University of Colorado, Aurora, CO, 80045, USA
| | - Juan-Pablo Idrovo
- Department of Surgery; Division of G.I., Trauma, and Endocrine Surgery, University of Colorado, Aurora, CO, 80045, USA.
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8
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Gut Microbiota and Metabolites May Play a Crucial Role in Sea Cucumber Apostichopus japonicus Aestivation. Microorganisms 2023; 11:microorganisms11020416. [PMID: 36838381 PMCID: PMC9961660 DOI: 10.3390/microorganisms11020416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/02/2023] [Accepted: 02/04/2023] [Indexed: 02/10/2023] Open
Abstract
The constant increase in temperatures under global warming has led to a prolonged aestivation period for Apostichopus japonicus, resulting in considerable losses in production and economic benefits. However, the specific mechanism of aestivation has not been fully elucidated. In this study, we first tried to illustrate the biological mechanisms of aestivation from the perspective of the gut microbiota and metabolites. Significant differences were found in the gut microbiota of aestivating adult A. japonicus (AAJSD group) compared with nonaestivating adult A. japonicus (AAJRT group) and young A. japonicus (YAJRT and YAJSD groups) based on 16S rRNA gene high-throughput sequencing analysis. The abundances of Desulfobacterota, Myxococcota, Bdellovibrionota, and Firmicutes (4 phyla) in the AAJSD group significantly increased. Moreover, the levels of Pseudoalteromonas, Fusibacter, Labilibacter, Litorilituus, Flammeovirga, Polaribacter, Ferrimonas, PB19, and Blfdi19 genera were significantly higher in the AAJSD group than in the other three groups. Further analysis of the LDA effect size showed that species with significant variation in abundance in the AAJSD group, including the phylum Firmicutes and the genera Litorilituus, Fusibacter, and Abilibacter, might be important biomarkers for aestivating adult A. japonicus. In addition, the results of metabolomics analysis showed that there were three distinct metabolic pathways, namely biosynthesis of secondary metabolites, tryptophan metabolism, and sesquiterpenoid and triterpenoid biosynthesis in the AAJSD group compared with the other three groups. Notably, 5-hydroxytryptophan was significantly upregulated in the AAJSD group in the tryptophan metabolism pathway. Moreover, the genera Labilibacter, Litorilituus, Ferrimonas, Flammeovirga, Blfdi19, Fusibacter, Pseudoalteromonas, and PB19 with high abundance in the gut of aestivating adult A. japonicus were positively correlated with the metabolite 5-HTP. These findings suggest that there may be potential biological associations among the gut microbiota, metabolites, and aestivation in A. japonicus. This work may provide a new perspective for further understanding the aestivation mechanism of A. japonicus.
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9
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Tsai CW, Rodriguez MX, Van Keuren AM, Phillips CB, Shushunov HM, Lee JE, Garcia AM, Ambardekar AV, Cleveland JC, Reisz JA, Proenza C, Chatfield KC, Tsai MF. Mechanisms and significance of tissue-specific MICU regulation of the mitochondrial calcium uniporter complex. Mol Cell 2022; 82:3661-3676.e8. [PMID: 36206740 PMCID: PMC9557913 DOI: 10.1016/j.molcel.2022.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 05/16/2022] [Accepted: 09/07/2022] [Indexed: 12/29/2022]
Abstract
Mitochondrial Ca2+ uptake, mediated by the mitochondrial Ca2+ uniporter, regulates oxidative phosphorylation, apoptosis, and intracellular Ca2+ signaling. Previous studies suggest that non-neuronal uniporters are exclusively regulated by a MICU1-MICU2 heterodimer. Here, we show that skeletal-muscle and kidney uniporters also complex with a MICU1-MICU1 homodimer and that human/mouse cardiac uniporters are largely devoid of MICUs. Cells employ protein-importation machineries to fine-tune the relative abundance of MICU1 homo- and heterodimers and utilize a conserved MICU intersubunit disulfide to protect properly assembled dimers from proteolysis by YME1L1. Using the MICU1 homodimer or removing MICU1 allows mitochondria to more readily take up Ca2+ so that cells can produce more ATP in response to intracellular Ca2+ transients. However, the trade-off is elevated ROS, impaired basal metabolism, and higher susceptibility to death. These results provide mechanistic insights into how tissues can manipulate mitochondrial Ca2+ uptake properties to support their unique physiological functions.
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Affiliation(s)
- Chen-Wei Tsai
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Madison X Rodriguez
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Anna M Van Keuren
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Charles B Phillips
- Department of Neurobiology, Harvard Medical School, Boston, MA 02115, USA
| | - Hannah M Shushunov
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Jessica E Lee
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Anastacia M Garcia
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Amrut V Ambardekar
- Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Joseph C Cleveland
- Department of Surgery, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Catherine Proenza
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Division of Cardiology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kathryn C Chatfield
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Ming-Feng Tsai
- Department of Physiology and Biophysics, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
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10
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Rangarajan S, Locy ML, Chanda D, Kurundkar A, Kurundkar D, Larson‐Casey JL, Londono P, Bagchi RA, Deskin B, Elajaili H, Nozik ES, Deshane JS, Zmijewski JW, Eickelberg O, Thannickal VJ. Mitochondrial uncoupling protein-2 reprograms metabolism to induce oxidative stress and myofibroblast senescence in age-associated lung fibrosis. Aging Cell 2022; 21:e13674. [PMID: 35934931 PMCID: PMC9470902 DOI: 10.1111/acel.13674] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 06/12/2022] [Accepted: 07/04/2022] [Indexed: 01/25/2023] Open
Abstract
Mitochondrial dysfunction has been associated with age-related diseases, including idiopathic pulmonary fibrosis (IPF). We provide evidence that implicates chronic elevation of the mitochondrial anion carrier protein, uncoupling protein-2 (UCP2), in increased generation of reactive oxygen species, altered redox state and cellular bioenergetics, impaired fatty acid oxidation, and induction of myofibroblast senescence. This pro-oxidant senescence reprogramming occurs in concert with conventional actions of UCP2 as an uncoupler of oxidative phosphorylation with dissipation of the mitochondrial membrane potential. UCP2 is highly expressed in human IPF lung myofibroblasts and in aged fibroblasts. In an aging murine model of lung fibrosis, the in vivo silencing of UCP2 induces fibrosis regression. These studies indicate a pro-fibrotic function of UCP2 in chronic lung disease and support its therapeutic targeting in age-related diseases associated with impaired tissue regeneration and organ fibrosis.
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Affiliation(s)
- Sunad Rangarajan
- Division of Pulmonary Sciences and Critical Care, Department of MedicineUniversity of ColoradoAuroraColoradoUSA
| | - Morgan L. Locy
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Diptiman Chanda
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Ashish Kurundkar
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Deepali Kurundkar
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Jennifer L. Larson‐Casey
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Pilar Londono
- Division of Pulmonary Sciences and Critical Care, Department of MedicineUniversity of ColoradoAuroraColoradoUSA
| | - Rushita A. Bagchi
- Division of Cardiology, Department of MedicineUniversity of ColoradoAuroraColoradoUSA
| | - Brian Deskin
- Division of Pulmonary and Critical Care, Department of MedicineTulane University School of MedicineNew OrleansLouisianaUSA
| | - Hanan Elajaili
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of PediatricsUniversity of ColoradoAuroraColoradoUSA
| | - Eva S. Nozik
- Cardiovascular Pulmonary Research Laboratories and Pediatric Critical Care Medicine, Department of PediatricsUniversity of ColoradoAuroraColoradoUSA
| | - Jessy S. Deshane
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Jaroslaw W. Zmijewski
- Division of Pulmonary and Critical Care, Department of MedicineUniversity of Alabama at BirminghamBirminghamAlabamaUSA
| | - Oliver Eickelberg
- Division of Pulmonary, Allergy and Critical Care, Department of MedicineUniversity of Pittsburgh Medical CenterPittsburghPennsylvaniaUSA
| | - Victor J. Thannickal
- John W. Deming Department of MedicineTulane University School of MedicineNew OrleansLouisianaUSA
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11
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Ward AV, Matthews SB, Fettig LM, Riley D, Finlay-Schultz J, Paul KV, Jackman M, Kabos P, MacLean PS, Sartorius CA. Estrogens and Progestins Cooperatively Shift Breast Cancer Cell Metabolism. Cancers (Basel) 2022; 14:1776. [PMID: 35406548 PMCID: PMC8996926 DOI: 10.3390/cancers14071776] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 03/25/2022] [Accepted: 03/29/2022] [Indexed: 12/15/2022] Open
Abstract
Metabolic reprogramming remains largely understudied in relation to hormones in estrogen receptor (ER) and progesterone receptor (PR) positive breast cancer. In this study, we investigated how estrogens, progestins, or the combination, impact metabolism in three ER and PR positive breast cancer cell lines. We measured metabolites in the treated cells using ultra-performance liquid chromatography coupled with mass spectrometry (UPLC-MS). Top metabolic processes upregulated with each treatment involved glucose metabolism, including Warburg effect/glycolysis, gluconeogenesis, and the pentose phosphate pathway. RNA-sequencing and pathway analysis on two of the cell lines treated with the same hormones, found estrogens target oncogenes, such as MYC and PI3K/AKT/mTOR that control tumor metabolism, while progestins increased genes associated with fatty acid metabolism, and the estrogen/progestin combination additionally increased glycolysis. Phenotypic analysis of cell energy metabolism found that glycolysis was the primary hormonal target, particularly for the progestin and estrogen-progestin combination. Transmission electron microscopy found that, compared to vehicle, estrogens elongated mitochondria, which was reversed by co-treatment with progestins. Progestins promoted lipid storage both alone and in combination with estrogen. These findings highlight the shift in breast cancer cell metabolism to a more glycolytic and lipogenic phenotype in response to combination hormone treatment, which may contribute to a more metabolically adaptive state for cell survival.
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Affiliation(s)
- Ashley V. Ward
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (A.V.W.); (S.B.M.); (L.M.F.); (D.R.); (J.F.-S.)
| | - Shawna B. Matthews
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (A.V.W.); (S.B.M.); (L.M.F.); (D.R.); (J.F.-S.)
| | - Lynsey M. Fettig
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (A.V.W.); (S.B.M.); (L.M.F.); (D.R.); (J.F.-S.)
| | - Duncan Riley
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (A.V.W.); (S.B.M.); (L.M.F.); (D.R.); (J.F.-S.)
| | - Jessica Finlay-Schultz
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (A.V.W.); (S.B.M.); (L.M.F.); (D.R.); (J.F.-S.)
| | - Kiran V. Paul
- Division of Medical Oncology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (K.V.P.); (P.K.)
| | - Matthew Jackman
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (M.J.); (P.S.M.)
| | - Peter Kabos
- Division of Medical Oncology, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (K.V.P.); (P.K.)
| | - Paul S. MacLean
- Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (M.J.); (P.S.M.)
| | - Carol A. Sartorius
- Department of Pathology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; (A.V.W.); (S.B.M.); (L.M.F.); (D.R.); (J.F.-S.)
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12
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Abstract
Newer 'omics approaches, such as metatranscriptomics and metabolomics, allow functional assessments of the interaction(s) between the gut microbiome and the human host. However, in order to generate meaningful data with these approaches, the method of sample collection is critical. Prior studies have relied on expensive and invasive means toward sample acquisition, such as intestinal biopsy, while other studies have relied on easier methods of collection, such as fecal samples that do not necessarily represent those microbes in contact with the host. In this pilot study, we attempt to characterize a novel, minimally invasive method toward sampling the human microbiome using mucosal cytology brush sampling compared to intestinal gut biopsy samples on 5 healthy participants undergoing routine screening colonoscopy. We compared metatranscriptomic analyses between the two collection methods and identified increased taxonomic evenness and beta diversity in the cytology brush samples and similar community transcriptional profiles between the two methods. Metabolomics assessment demonstrated striking differences between the two methods, implying a difference in bacterial-derived versus human-absorbed metabolites. Put together, this study supports the use of microbiome sampling with cytology brushes, but caution must be exercised when performing metabolomics assessment, as this represents differential metabolite production but not absorption by the host. IMPORTANCE In order to generate meaningful metabolomic and microbiome data, the method of sample collection is critical. This study utilizes and compares two methods for intestinal tissue collection for evaluation of metabolites and microbiomes, finding that using a brush to sample the microbiome provides valuable data. However, for metabolomics assessment, biopsy samples may still be required.
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13
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McCubbrey AL, McManus SA, McClendon JD, Thomas SM, Chatwin HB, Reisz JA, D'Alessandro A, Mould KJ, Bratton DL, Henson PM, Janssen WJ. Polyamine import and accumulation causes immunomodulation in macrophages engulfing apoptotic cells. Cell Rep 2022; 38:110222. [PMID: 35021097 PMCID: PMC8859864 DOI: 10.1016/j.celrep.2021.110222] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 10/26/2021] [Accepted: 12/15/2021] [Indexed: 01/01/2023] Open
Abstract
Phagocytosis of apoptotic cells, termed efferocytosis, is critical for tissue homeostasis and drives anti-inflammatory programming in engulfing macrophages. Here, we assess metabolites in naive and inflammatory macrophages following engulfment of multiple cellular and non-cellular targets. Efferocytosis leads to increases in the arginine-derived polyamines, spermidine and spermine, in vitro and in vivo. Surprisingly, polyamine accumulation after efferocytosis does not arise from retention of apoptotic cell metabolites or de novo synthesis but from enhanced polyamine import that is dependent on Rac1, actin, and PI3 kinase. Blocking polyamine import prevents efferocytosis from suppressing macrophage interleukin (IL)-1β or IL-6. This identifies efferocytosis as a trigger for polyamine import and accumulation, and imported polyamines as mediators of efferocytosis-induced immune reprogramming.
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Affiliation(s)
- Alexandra L McCubbrey
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA; Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, Aurora, CO 80045, USA.
| | - Shannon A McManus
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA
| | - Jazalle D McClendon
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA
| | | | - Hope B Chatwin
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver - Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver - Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kara J Mould
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA; Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, Aurora, CO 80045, USA
| | - Donna L Bratton
- Division of Pediatric Allergy and Clinical Immunology, Department of Pediatrics, Denver, CO 80206, USA; Program in Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - Peter M Henson
- Program in Cell Biology, Department of Pediatrics, National Jewish Health, Denver, CO 80206, USA
| | - William J Janssen
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, Denver, CO 80206, USA; Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, Aurora, CO 80045, USA.
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14
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Klichkhanov NK, Nikitina ER, Shihamirova ZM, Astaeva MD, Chalabov SI, Krivchenko AI. Erythrocytes of Little Ground Squirrels Undergo Reversible Oxidative Stress During Arousal From Hibernation. Front Physiol 2021; 12:730657. [PMID: 34690805 PMCID: PMC8529035 DOI: 10.3389/fphys.2021.730657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 09/07/2021] [Indexed: 12/30/2022] Open
Abstract
The hibernation of small mammals is characterized by long torpor bouts alternating with short periods of arousal. During arousal, due to a significant increase in oxygen consumption, tissue perfusion, and the launch of thermogenesis in cells, a large amount of reactive oxygen species (ROS) and nitrogen (RNS) can be formed, which can trigger oxidative stress in cells. To estimate this possibility, we studied the intensity of free-radical processes in the red blood cells (RBCs) of little ground squirrels (LGS; Spermophilus pygmaeus) in the dynamics of arousal from hibernation. We found that in the torpid state, the degree of generation of ROS and RNS (8.3%, p>0.09; 20.7%, p<0.001, respectively), the degree of oxidative modification of membrane lipids and RBC proteins is at a low level (47%, p<0.001; 82.7%, p<0.001, respectively) compared to the summer control. At the same time, the activity of superoxide dismutase (SOD) and catalase (CAT) in RBC is significantly reduced (32.8%, p<0.001; 22.2%, p<0.001, respectively), but not the level of glutathione (GSH). In the torpid state, SOD is activated by exogenous GSH in concentration-dependent manner, which indicates reversible enzyme inhibition. During the arousal of ground squirrels, when the body temperature reaches 25°C, RBCs are exposed oxidative stress. This is confirmed by the maximum increase in the level of uric acid (25.4%, p<0.001) in plasma, a marker of oxidative modification of lipids [thiobarbituric acid reactive substances (TBARS); 82%, p < 0.001] and proteins (carbonyl groups; 499%, p < 0.001) in RBC membranes, as well as the decrease in the level of GSH (19.7%, p < 0.001) in erythrocytes relative to the torpid state and activity of SOD and CAT in erythrocytes to values at the Tb 20°C. After full recovery of body temperature, the level of GSH increases, the ratio of SOD/CAT is restored, which significantly reduces the degree of oxidative damage of lipids and proteins of RBC membranes. Thus, the oxidative stress detected at Tb 25°C was transient and physiologically regulated.
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Affiliation(s)
| | - Elena R Nikitina
- Laboratory of Comparative Physiology of Respiration, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
| | | | - Maria D Astaeva
- Department of Biochemistry, Dagestan State University, Makhachkala, Russia
| | - Shamil I Chalabov
- Department of Biochemistry, Dagestan State University, Makhachkala, Russia.,Laboratory of Comparative Physiology of Respiration, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
| | - Aleksandr I Krivchenko
- Laboratory of Comparative Physiology of Respiration, Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
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15
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Aboushousha R, Elko E, Chia SB, Manuel AM, van de Wetering C, van der Velden J, MacPherson M, Erickson C, Reisz JA, D'Alessandro A, Wouters EFM, Reynaert NL, Lam YW, Anathy V, van der Vliet A, Seward DJ, Janssen-Heininger YMW. Glutathionylation chemistry promotes interleukin-1 beta-mediated glycolytic reprogramming and pro-inflammatory signaling in lung epithelial cells. FASEB J 2021; 35:e21525. [PMID: 33817836 DOI: 10.1096/fj.202002687rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 02/25/2021] [Accepted: 03/01/2021] [Indexed: 12/28/2022]
Abstract
Glycolysis is a well-known process by which metabolically active cells, such as tumor or immune cells meet their high metabolic demands. Previously, our laboratory has demonstrated that in airway epithelial cells, the pleiotropic cytokine, interleukin-1 beta (IL1B) induces glycolysis and that this contributes to allergic airway inflammation and remodeling. Activation of glycolysis is known to increase NADPH reducing equivalents generated from the pentose phosphate pathway, linking metabolic reprogramming with redox homeostasis. In addition, numerous glycolytic enzymes are known to be redox regulated. However, whether and how redox chemistry regulates metabolic reprogramming more generally remains unclear. In this study, we employed a multi-omics approach in primary mouse airway basal cells to evaluate the role of protein redox biochemistry, specifically protein glutathionylation, in mediating metabolic reprogramming. Our findings demonstrate that IL1B induces glutathionylation of multiple proteins involved in metabolic regulation, notably in the glycolysis pathway. Cells lacking Glutaredoxin-1 (Glrx), the enzyme responsible for reversing glutathionylation, show modulation of multiple metabolic pathways including an enhanced IL1B-induced glycolytic response. This was accompanied by increased secretion of thymic stromal lymphopoietin (TSLP), a cytokine important in asthma pathogenesis. Targeted inhibition of glycolysis prevented TSLP release, confirming the functional relevance of enhanced glycolysis in cells stimulated with IL1B. Collectively, data herein point to an intriguing link between glutathionylation chemistry and glycolytic reprogramming in epithelial cells and suggest that glutathionylation chemistry may represent a therapeutic target in pulmonary pathologies with perturbations in the glycolysis pathway.
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Affiliation(s)
- Reem Aboushousha
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Evan Elko
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Shi B Chia
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Allison M Manuel
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Cheryl van de Wetering
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Jos van der Velden
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Maximilian MacPherson
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Cuixia Erickson
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO, USA
| | - Emiel F M Wouters
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Toxicology and Metabolism, Maastricht University Medical Center, Maastricht, the Netherlands.,Ludwig Boltzmann Institute for Lung Research, Vienna, Austria
| | - Niki L Reynaert
- Department of Respiratory Medicine, NUTRIM School of Nutrition and Translational Research in Metabolism, Toxicology and Metabolism, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Ying-Wai Lam
- Department of Biology, University of Vermont College of Medicine, Burlington, VT, USA
| | - Vikas Anathy
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - Albert van der Vliet
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
| | - David J Seward
- Department of Pathology and Laboratory Medicine, University of Vermont College of Medicine, Burlington, VT, USA
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16
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Subedi A, Liu Q, Ayyathan DM, Sharon D, Cathelin S, Hosseini M, Xu C, Voisin V, Bader GD, D'Alessandro A, Lechman ER, Dick JE, Minden MD, Wang JCY, Chan SM. Nicotinamide phosphoribosyltransferase inhibitors selectively induce apoptosis of AML stem cells by disrupting lipid homeostasis. Cell Stem Cell 2021; 28:1851-1867.e8. [PMID: 34293334 DOI: 10.1016/j.stem.2021.06.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 05/05/2021] [Accepted: 06/22/2021] [Indexed: 12/29/2022]
Abstract
Current treatments for acute myeloid leukemia (AML) are often ineffective in eliminating leukemic stem cells (LSCs), which perpetuate the disease. Here, we performed a metabolic drug screen to identify LSC-specific vulnerabilities and found that nicotinamide phosphoribosyltransferase (NAMPT) inhibitors selectively killed LSCs, while sparing normal hematopoietic stem and progenitor cells. Treatment with KPT-9274, a NAMPT inhibitor, suppressed the conversion of saturated fatty acids to monounsaturated fatty acids, a reaction catalyzed by the stearoyl-CoA desaturase (SCD) enzyme, resulting in apoptosis of AML cells. Transcriptomic analysis of LSCs treated with KPT-9274 revealed an upregulation of sterol regulatory-element binding protein (SREBP)-regulated genes, including SCD, which conferred partial protection against NAMPT inhibitors. Inhibition of SREBP signaling with dipyridamole enhanced the cytotoxicity of KPT-9274 on LSCs in vivo. Our work demonstrates that altered lipid homeostasis plays a key role in NAMPT inhibitor-induced apoptosis and identifies NAMPT inhibition as a therapeutic strategy for targeting LSCs in AML.
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Affiliation(s)
- Amit Subedi
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Qiang Liu
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Dhanoop M Ayyathan
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - David Sharon
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Severine Cathelin
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Mohsen Hosseini
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - Changjiang Xu
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, Canada
| | - Veronique Voisin
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, Canada
| | - Gary D Bader
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Donnelly Centre for Cellular and Biomolecular Research, Toronto, ON, Canada
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO, USA
| | - Eric R Lechman
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada
| | - John E Dick
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Mark D Minden
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medicine, University of Toronto, ON, Canada; Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada
| | - Jean C Y Wang
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medicine, University of Toronto, ON, Canada; Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada
| | - Steven M Chan
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada; Department of Medicine, University of Toronto, ON, Canada; Division of Medical Oncology and Hematology, Department of Medicine, University Health Network, Toronto, ON, Canada.
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17
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Joshi SK, Nechiporuk T, Bottomly D, Piehowski PD, Reisz JA, Pittsenbarger J, Kaempf A, Gosline SJC, Wang YT, Hansen JR, Gritsenko MA, Hutchinson C, Weitz KK, Moon J, Cendali F, Fillmore TL, Tsai CF, Schepmoes AA, Shi T, Arshad OA, McDermott JE, Babur O, Watanabe-Smith K, Demir E, D'Alessandro A, Liu T, Tognon CE, Tyner JW, McWeeney SK, Rodland KD, Druker BJ, Traer E. The AML microenvironment catalyzes a stepwise evolution to gilteritinib resistance. Cancer Cell 2021; 39:999-1014.e8. [PMID: 34171263 PMCID: PMC8686208 DOI: 10.1016/j.ccell.2021.06.003] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 03/22/2021] [Accepted: 06/03/2021] [Indexed: 12/18/2022]
Abstract
Our study details the stepwise evolution of gilteritinib resistance in FLT3-mutated acute myeloid leukemia (AML). Early resistance is mediated by the bone marrow microenvironment, which protects residual leukemia cells. Over time, leukemia cells evolve intrinsic mechanisms of resistance, or late resistance. We mechanistically define both early and late resistance by integrating whole-exome sequencing, CRISPR-Cas9, metabolomics, proteomics, and pharmacologic approaches. Early resistant cells undergo metabolic reprogramming, grow more slowly, and are dependent upon Aurora kinase B (AURKB). Late resistant cells are characterized by expansion of pre-existing NRAS mutant subclones and continued metabolic reprogramming. Our model closely mirrors the timing and mutations of AML patients treated with gilteritinib. Pharmacological inhibition of AURKB resensitizes both early resistant cell cultures and primary leukemia cells from gilteritinib-treated AML patients. These findings support a combinatorial strategy to target early resistant AML cells with AURKB inhibitors and gilteritinib before the expansion of pre-existing resistance mutations occurs.
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MESH Headings
- Aniline Compounds/pharmacology
- Aurora Kinase B/genetics
- Aurora Kinase B/metabolism
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Drug Resistance, Neoplasm
- Exome
- Gene Expression Regulation, Neoplastic/drug effects
- Humans
- Leukemia, Myeloid, Acute/drug therapy
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/pathology
- Metabolome
- Protein Kinase Inhibitors/pharmacology
- Proteome
- Pyrazines/pharmacology
- Tumor Cells, Cultured
- Tumor Microenvironment
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Affiliation(s)
- Sunil K Joshi
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Department of Physiology & Pharmacology, School of Medicine, Oregon Health & Science University, Portland, OR, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Tamilla Nechiporuk
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Daniel Bottomly
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR, USA
| | - Paul D Piehowski
- Environmental and Molecular Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA; Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Janét Pittsenbarger
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Andy Kaempf
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Biostatistics Shared Resource, Knight Cancer Institute, Oregon Health & Science University, Portland, OR, USA
| | - Sara J C Gosline
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Yi-Ting Wang
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Joshua R Hansen
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Marina A Gritsenko
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Chelsea Hutchinson
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Karl K Weitz
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jamie Moon
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Francesca Cendali
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Thomas L Fillmore
- Environmental and Molecular Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA; Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Chia-Feng Tsai
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Athena A Schepmoes
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Tujin Shi
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Osama A Arshad
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Jason E McDermott
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Ozgun Babur
- Department of Computer Science, University of Massachusetts, Boston, MA, USA
| | - Kevin Watanabe-Smith
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Computational Biology Program, Oregon Health & Science University, Portland, OR, USA
| | - Emek Demir
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Department of Molecular and Medical Genetics, Oregon Health & Science University, Portland, OR, USA; Computational Biology Program, Oregon Health & Science University, Portland, OR, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Tao Liu
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA
| | - Cristina E Tognon
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA
| | - Jeffrey W Tyner
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA; Department of Cell, Development, & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - Shannon K McWeeney
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Bioinformatics and Computational Biology, Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland, OR, USA
| | - Karin D Rodland
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, USA; Department of Cell, Development, & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - Brian J Druker
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA; Department of Cell, Development, & Cancer Biology, Oregon Health & Science University, Portland, OR, USA
| | - Elie Traer
- Knight Cancer Institute, Oregon Health & Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239, USA; Division of Hematology & Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, OR, USA; Department of Cell, Development, & Cancer Biology, Oregon Health & Science University, Portland, OR, USA.
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18
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Craighead DH, Heinbockel TC, Freeberg KA, Rossman MJ, Jackman RA, Jankowski LR, Hamilton MN, Ziemba BP, Reisz JA, D’Alessandro A, Brewster LM, DeSouza CA, You Z, Chonchol M, Bailey EF, Seals DR. Time-Efficient Inspiratory Muscle Strength Training Lowers Blood Pressure and Improves Endothelial Function, NO Bioavailability, and Oxidative Stress in Midlife/Older Adults With Above-Normal Blood Pressure. J Am Heart Assoc 2021; 10:e020980. [PMID: 34184544 PMCID: PMC8403283 DOI: 10.1161/jaha.121.020980] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Accepted: 04/22/2021] [Indexed: 12/13/2022]
Abstract
Background High-resistance inspiratory muscle strength training (IMST) is a novel, time-efficient physical training modality. Methods and Results We performed a double-blind, randomized, sham-controlled trial to investigate whether 6 weeks of IMST (30 breaths/day, 6 days/week) improves blood pressure, endothelial function, and arterial stiffness in midlife/older adults (aged 50-79 years) with systolic blood pressure ≥120 mm Hg, while also investigating potential mechanisms and long-lasting effects. Thirty-six participants completed high-resistance IMST (75% maximal inspiratory pressure, n=18) or low-resistance sham training (15% maximal inspiratory pressure, n=18). IMST was safe, well tolerated, and had excellent adherence (≈95% of training sessions completed). Casual systolic blood pressure decreased from 135±2 mm Hg to 126±3 mm Hg (P<0.01) with IMST, which was ≈75% sustained 6 weeks after IMST (P<0.01), whereas IMST modestly decreased casual diastolic blood pressure (79±2 mm Hg to 77±2 mm Hg, P=0.03); blood pressure was unaffected by sham training (all P>0.05). Twenty-four hour systolic blood pressure was lower after IMST versus sham training (P=0.01). Brachial artery flow-mediated dilation improved ≈45% with IMST (P<0.01) but was unchanged with sham training (P=0.73). Human umbilical vein endothelial cells cultured with subject serum sampled after versus before IMST exhibited increased NO bioavailability, greater endothelial NO synthase activation, and lower reactive oxygen species bioactivity (P<0.05). IMST decreased C-reactive protein (P=0.05) and altered select circulating metabolites (targeted plasma metabolomics) associated with cardiovascular function. Neither IMST nor sham training influenced arterial stiffness (P>0.05). Conclusions High-resistance IMST is a safe, highly adherable lifestyle intervention for improving blood pressure and endothelial function in midlife/older adults with above-normal initial systolic blood pressure. Registration URL: https://www.clinicaltrials.gov; Unique identifier: NCT03266510.
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Affiliation(s)
| | | | | | - Matthew J. Rossman
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderCO
| | - Rachel A. Jackman
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderCO
| | | | | | - Brian P. Ziemba
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderCO
| | - Julie A. Reisz
- Department of Biochemistry and Molecular GeneticsUniversity of Colorado Anschutz Medical CampusAuroraCO
| | - Angelo D’Alessandro
- Department of Biochemistry and Molecular GeneticsUniversity of Colorado Anschutz Medical CampusAuroraCO
| | - L. Madden Brewster
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderCO
| | | | - Zhiying You
- Division of Renal Diseases and HypertensionUniversity of Colorado Anschutz Medical CampusAuroraCO
| | - Michel Chonchol
- Division of Renal Diseases and HypertensionUniversity of Colorado Anschutz Medical CampusAuroraCO
| | - E. Fiona Bailey
- Department of PhysiologyUniversity of Arizona College of MedicineTucsonAZ
| | - Douglas R. Seals
- Department of Integrative PhysiologyUniversity of Colorado BoulderBoulderCO
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19
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Lukinović V, Biggar KK. Deconvoluting complex protein interaction networks through reductionist strategies in peptide biochemistry: Modern approaches and research questions. Comp Biochem Physiol B Biochem Mol Biol 2021; 256:110616. [PMID: 34000427 DOI: 10.1016/j.cbpb.2021.110616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 05/06/2021] [Accepted: 05/12/2021] [Indexed: 12/12/2022]
Abstract
Following the decoding of the first human genome, researchers have vastly improved their understanding of cell biology and its regulation. As a result, it has become clear that it is not merely genetic information, but the aberrant changes in the functionality and connectivity of its encoded proteins that drive cell response to periods of stress and external cues. Therefore, proper utilization of refined methods that help to describe protein signalling or regulatory networks (i.e., functional connectivity), can help us understand how change in the signalling landscape effects the cell. However, given the vast complexity in 'how and when' proteins communicate or interact with each other, it is extremely difficult to define, characterize, and understand these interaction networks in a tangible manner. Herein lies the challenge of tackling the functional proteome; its regulation is encoded in multiple layers of interaction, chemical modification and cell compartmentalization. To address and refine simple research questions, modern reductionist strategies in protein biochemistry have successfully used peptide-based experiments; their summation helping to simplify the overall complexity of these protein interaction networks. In this way, peptides are powerful tools used in fundamental research that can be readily applied to comparative biochemical research. Understanding and defining how proteins interact is one of the key aspects towards understanding how the proteome functions. To date, reductionist peptide-based research has helped to address a wide range of proteome-related research questions, including the prediction of enzymes substrates, identification of posttranslational modifications, and the annotation of protein interaction partners. Peptide arrays have been used to identify the binding specificity of reader domains, which are able to recognise the posttranslational modifications; forming dynamic protein interactions that are dependent on modification state. Finally, representing one of the fastest growing classes of inhibitor molecules, peptides are now begin explored as "disruptors" of protein-protein interactions or enzyme activity. Collectively, this review will discuss the use of peptides, peptide arrays, peptide-oriented computational biochemistry as modern reductionist strategies in deconvoluting the functional proteome.
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Affiliation(s)
- Valentina Lukinović
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada
| | - Kyle K Biggar
- Institute of Biochemistry, Carleton University, 1125 Colonel By Drive, Ottawa, Ontario K1S 5B6, Canada.
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20
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Rogers SC, Ge X, Brummet M, Lin X, Timm DD, d'Avignon A, Garbow JR, Kao J, Prakash J, Issaian A, Eisenmesser EZ, Reisz JA, D'Alessandro A, Doctor A. Quantifying dynamic range in red blood cell energetics: Evidence of progressive energy failure during storage. Transfusion 2021; 61:1586-1599. [PMID: 33830505 DOI: 10.1111/trf.16395] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 01/26/2021] [Accepted: 03/09/2021] [Indexed: 12/13/2022]
Abstract
BACKGROUND During storage, red blood cells (RBCs) undergo significant biochemical and morphologic changes, referred to collectively as the "storage lesion". It was hypothesized that these defects may arise from disrupted oxygen-based regulation of RBC energy metabolism, with resultant depowering of intrinsic antioxidant systems. STUDY DESIGN AND METHODS As a function of storage duration, the dynamic range in RBC metabolic response to three models of biochemical oxidant stress (methylene blue, hypoxanthine/xanthine oxidase, and diamide) was assessed, comparing glycolytic flux by NMR and UHPLC-MS methodologies. Blood was processed/stored under standard conditions (AS-1 additive solution) with leukoreduction. Over a 6-week period, RBC metabolic and antioxidant status were assessed at baseline and following exposure to the three biochemical oxidant models. Comparison was made of glycolytic flux (1 H-NMR tracking of [2-13 C]-glucose and metabolomic phenotyping with [1,2,3-13 C3 ] glucose), reducing equivalent (NADPH/NADP+ ) recycling, and thiol-based (GSH/GSSG) antioxidant status. RESULTS As a function of storage duration, we observed the following: (1) a reduction in baseline hexose monophosphate pathway (HMP) flux, the sole pathway responsible for the regeneration of the essential reducing equivalent NADPH; with (2) diminished stress-based dynamic range in both overall glycolytic as well as proportional HMP flux. In addition, progressive with storage duration, RBCs showed (3) constraint in reducing equivalent (NADPH) recycling capacity, (4) loss of thiol based (GSH) recycling capacity, and (5) dysregulation of metabolon assembly at the cytoplasmic domain of Band 3 membrane protein (cdB3). CONCLUSION Blood storage disturbs normal RBC metabolic control, depowering antioxidant capacity and enhancing vulnerability to oxidative injury.
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Affiliation(s)
- Stephen C Rogers
- Department of Pediatrics, Divisions of Critical Care Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.,The Center for Blood Oxygen Transport and Hemostasis, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Xia Ge
- Department of Chemistry, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Mary Brummet
- Department of Pediatrics, Divisions of Critical Care Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.,The Center for Blood Oxygen Transport and Hemostasis, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Xue Lin
- Department of Pediatrics, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - David D Timm
- Department of Pediatrics, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Andre d'Avignon
- Department of Chemistry, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Joel R Garbow
- Department of Radiology, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Jeff Kao
- Department of Chemistry, Washington University in Saint Louis, School of Medicine, Saint Louis, Missouri, USA
| | - Jaya Prakash
- Department of Pediatrics, Divisions of Critical Care Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Aaron Issaian
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Elan Z Eisenmesser
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Allan Doctor
- Department of Pediatrics, Divisions of Critical Care Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.,The Center for Blood Oxygen Transport and Hemostasis, University of Maryland School of Medicine, Baltimore, Maryland, USA
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21
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Berlinberg AJ, Regner EH, Stahly A, Brar A, Reisz JA, Gerich ME, Fennimore BP, Scott FI, Freeman AE, Kuhn KA. Multi 'Omics Analysis of Intestinal Tissue in Ankylosing Spondylitis Identifies Alterations in the Tryptophan Metabolism Pathway. Front Immunol 2021; 12:587119. [PMID: 33746944 PMCID: PMC7966505 DOI: 10.3389/fimmu.2021.587119] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 01/08/2021] [Indexed: 12/20/2022] Open
Abstract
Intestinal microbial dysbiosis, intestinal inflammation, and Th17 immunity are all linked to the pathophysiology of spondyloarthritis (SpA); however, the mechanisms linking them remain unknown. One potential hypothesis suggests that the dysbiotic gut microbiome as a whole produces metabolites that influence human immune cells. To identify potential disease-relevant, microbiome-produced metabolites, we performed metabolomics screening and shotgun metagenomics on paired colon biopsies and fecal samples, respectively, from subjects with axial SpA (axSpA, N=21), Crohn's disease (CD, N=27), and Crohn's-axSpA overlap (CD-axSpA, N=12), as well as controls (HC, N=24). Using LC-MS based metabolomics of 4 non-inflamed pinch biopsies of the distal colon from subjects, we identified significant alterations in tryptophan pathway metabolites, including an expansion of indole-3-acetate (IAA) in axSpA and CD-axSpA compared to HC and CD and indole-3-acetaldehyde (I3Ald) in axSpA and CD-axSpA but not CD compared to HC, suggesting possible specificity to the development of axSpA. We then performed shotgun metagenomics of fecal samples to characterize gut microbial dysbiosis across these disease states. In spite of no significant differences in alpha-diversity among the 4 groups, our results confirmed differences in gene abundances of numerous enzymes involved in tryptophan metabolism. Specifically, gene abundance of indolepyruvate decarboxylase, which generates IAA and I3Ald, was significantly elevated in individuals with axSpA while gene abundances in HC demonstrated a propensity towards tryptophan synthesis. Such genetic changes were not observed in CD, again suggesting disease specificity for axSpA. Given the emerging role of tryptophan and its metabolites in immune function, altogether these data indicate that tryptophan metabolism into I3Ald and then IAA is one mechanism by which the gut microbiome potentially influences the development of axSpA.
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Affiliation(s)
- Adam J. Berlinberg
- Division of Rheumatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Emilie H. Regner
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Andrew Stahly
- Division of Rheumatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Ana Brar
- Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Julie A. Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO, United States
| | - Mark E. Gerich
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Blair P. Fennimore
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Frank I. Scott
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Alison E. Freeman
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Colorado, Aurora, CO, United States
| | - Kristine A. Kuhn
- Division of Rheumatology, Department of Medicine, University of Colorado, Aurora, CO, United States
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22
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Rossman MJ, Gioscia-Ryan RA, Santos-Parker JR, Ziemba BP, Lubieniecki KL, Johnson LC, Poliektov NE, Bispham NZ, Woodward KA, Nagy EE, Bryan NS, Reisz JA, D'Alessandro A, Chonchol M, Sindler AL, Seals DR. Inorganic Nitrite Supplementation Improves Endothelial Function With Aging: Translational Evidence for Suppression of Mitochondria-Derived Oxidative Stress. Hypertension 2021; 77:1212-1222. [PMID: 33641356 DOI: 10.1161/hypertensionaha.120.16175] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Matthew J Rossman
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Rachel A Gioscia-Ryan
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Jessica R Santos-Parker
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Brian P Ziemba
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Kara L Lubieniecki
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Lawrence C Johnson
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Natalie E Poliektov
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Nina Z Bispham
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Kayla A Woodward
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Erzsebet E Nagy
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | | | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics (J.A.R., A.D.), University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics (J.A.R., A.D.), University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Michel Chonchol
- Department of Medicine, Division of Renal Diseases and Hypertension (M.C.), University of Colorado Anschutz Medical Campus, Aurora, CO
| | - Amy L Sindler
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
| | - Douglas R Seals
- Department of Integrative Physiology, University of Colorado Boulder, CO (M.J.R., R.A.G.-R., J.R.S.-P., B.P.Z., K.L.L., L.C.J., N.E.P., N.Z.B., K.A.W., E.E.N., A.L.S., D.R.S.)
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23
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Different Blood Metabolomics Profiles in Infants Consuming a Meat- or Dairy-Based Complementary Diet. Nutrients 2021; 13:nu13020388. [PMID: 33513734 PMCID: PMC7912106 DOI: 10.3390/nu13020388] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Revised: 01/22/2021] [Accepted: 01/23/2021] [Indexed: 11/25/2022] Open
Abstract
Background: Research is limited in evaluating the mechanisms responsible for infant growth in response to different protein-rich foods; Methods: Targeted and untargeted metabolomics analysis were conducted on serum samples collected from an infant controlled-feeding trial that participants consumed a meat- vs. dairy-based complementary diet from 5 to 12 months of age, and followed up at 24 months. Results: Isoleucine, valine, phenylalanine increased and threonine decreased over time among all participants; Although none of the individual essential amino acids had a significant impact on changes in growth Z scores from 5 to 12 months, principal component heavily weighted by BCAAs (leucine, isoleucine, valine) and phenylalanine had a positive association with changes in length-for-age Z score from 5 to 12 months. Concentrations of acylcarnitine-C4, acylcarnitine-C5 and acylcarnitine-C5:1 significantly increased over time with the dietary intervention, but none of the acylcarnitines were associated with infant growth Z scores. Quantitative trimethylamine N-oxide increased in the meat group from 5 to 12 months; Conclusions: Our findings suggest that increasing total protein intake by providing protein-rich complementary foods was associated with increased concentrations of certain essential amino acids and short-chain acyl-carnitines. The sources of protein-rich foods (e.g., meat vs. dairy) did not appear to differentially impact serum metabolites, and comprehensive mechanistic investigations are needed to identify other contributors or mediators of the diet-induced infant growth trajectories.
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24
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Omega 3 fatty acids stimulate thermogenesis during torpor in the Arctic Ground Squirrel. Sci Rep 2021; 11:1340. [PMID: 33446684 PMCID: PMC7809411 DOI: 10.1038/s41598-020-78763-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Accepted: 10/20/2020] [Indexed: 11/29/2022] Open
Abstract
Omega 3 polyunsaturated fatty acids (PUFAs) influence metabolism and thermogenesis in non-hibernators. How omega 3 PUFAs influence Arctic Ground Squirrels (AGS) during hibernation is unknown. Prior to hibernation we fed AGS chow composed of an omega 6:3 ratio approximately 1:1 (high in omega 3 PUFA, termed Balanced Diet), or an omega 6:3 ratio of 5:1 (Standard Rodent Chow), and measured the influence of diet on core body temperature (Tb), brown adipose tissue (BAT) mass, fatty acid profiles of BAT, white adipose tissue (WAT) and plasma as well as hypothalamic endocannabinoid and endocannabinoid-like bioactive fatty acid amides during hibernation. Results show feeding a diet high in omega 3 PUFAs, with a more balanced omega 6:3 ratio, increases AGS Tb in torpor. We found the diet-induced increase in Tb during torpor is most easily explained by an increase in the mass of BAT deposits of Balanced Diet AGS. The increase in BAT mass is associated with elevated levels of metabolites DHA and EPA in tissue and plasma suggesting that these omega 3 PUFAs may play a role in thermogenesis during torpor. While we did not observe diet-induced change in endocannabinoids, we do report altered hypothalamic levels of some endocannabinoids, and endocannabinoid-like compounds, during hibernation.
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25
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Chen C, Mahar R, Merritt ME, Denlinger DL, Hahn DA. ROS and hypoxia signaling regulate periodic metabolic arousal during insect dormancy to coordinate glucose, amino acid, and lipid metabolism. Proc Natl Acad Sci U S A 2021; 118:e2017603118. [PMID: 33372159 PMCID: PMC7817151 DOI: 10.1073/pnas.2017603118] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Metabolic suppression is a hallmark of animal dormancy that promotes overall energy savings. Some diapausing insects and some mammalian hibernators have regular cyclic patterns of substantial metabolic depression alternating with periodic arousal where metabolic rates increase dramatically. Previous studies, largely in mammalian hibernators, have shown that periodic arousal is driven by an increase in aerobic mitochondrial metabolism and that many molecules related to energy metabolism fluctuate predictably across periodic arousal cycles. However, it is still not clear how these rapid metabolic shifts are regulated. We first found that diapausing flesh fly pupae primarily use anaerobic glycolysis during metabolic depression but engage in aerobic respiration through the tricarboxylic acid cycle during periodic arousal. Diapausing pupae also clear anaerobic by-products and regenerate many metabolic intermediates depleted in metabolic depression during arousal, consistent with patterns in mammalian hibernators. We found that decreased levels of reactive oxygen species (ROS) induced metabolic arousal and elevated ROS extended the duration of metabolic depression. Our data suggest ROS regulates the timing of metabolic arousal by changing the activity of two critical metabolic enzymes, pyruvate dehydrogenase and carnitine palmitoyltransferase I by modulating the levels of hypoxia inducible transcription factor (HIF) and phosphorylation of adenosine 5'-monophosphate-activated protein kinase (AMPK). Our study shows that ROS signaling regulates periodic arousal in our insect diapasue system, suggesting the possible importance ROS for regulating other types of of metabolic cycles in dormancy as well.
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Affiliation(s)
- Chao Chen
- Department of Entomology and Nematology, The University of Florida, Gainesville, FL 32611-0620;
| | - Rohit Mahar
- Department of Biochemistry and Molecular Biology, The University of Florida, Gainesville, FL 32610-0245
| | - Matthew E Merritt
- Department of Biochemistry and Molecular Biology, The University of Florida, Gainesville, FL 32610-0245
| | - David L Denlinger
- Department of Entomology, 300 Aronoff Laboratory, The Ohio State University, Columbus, OH 43210;
- Department of Evolution, Ecology, and Organismal Biology, The Ohio State University, 300 Aronoff Laboratory, Columbus, OH 43210
| | - Daniel A Hahn
- Department of Entomology and Nematology, The University of Florida, Gainesville, FL 32611-0620;
- Genetics Institute, The University of Florida, Gainesville, FL 32610-3610
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26
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Rice SA, Ten Have GAM, Reisz JA, Gehrke S, Stefanoni D, Frare C, Barati Z, Coker RH, D'Alessandro A, Deutz NEP, Drew KL. Nitrogen recycling buffers against ammonia toxicity from skeletal muscle breakdown in hibernating arctic ground squirrels. Nat Metab 2020; 2:1459-1471. [PMID: 33288952 PMCID: PMC7744440 DOI: 10.1038/s42255-020-00312-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 10/15/2020] [Indexed: 02/06/2023]
Abstract
Hibernation is a state of extraordinary metabolic plasticity. The pathways of amino acid metabolism as they relate to nitrogen homeostasis in hibernating mammals in vivo are unknown. Here we show, using pulse isotopic tracing, evidence of increased myofibrillar (skeletal muscle) protein breakdown and suppressed whole-body production of metabolites in vivo throughout deep torpor. As whole-body production of metabolites is suppressed, amino acids with nitrogenous side chains accumulate during torpor, while urea cycle intermediates do not. Using 15N stable isotope methodology in arctic ground squirrels (Urocitellus parryii), we provide evidence that free nitrogen is buffered and recycled into essential amino acids, non-essential amino acids and the gamma-glutamyl system during the inter-bout arousal period of hibernation. In the absence of nutrient intake or physical activity, our data illustrate the orchestration of metabolic pathways that sustain the provision of essential and non-essential amino acids and prevent ammonia toxicity during hibernation.
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Affiliation(s)
- Sarah A Rice
- Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK, USA
- Institute of Arctic Biology, Center for Transformative Research in Metabolism, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Gabriella A M Ten Have
- Center for Translational Research in Aging and Longevity, Department of Health and Kinesiology, Texas A&M University, College Station, TX, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Sarah Gehrke
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Davide Stefanoni
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Carla Frare
- Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK, USA
- Institute of Arctic Biology, Center for Transformative Research in Metabolism, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Zeinab Barati
- Institute of Arctic Biology, Center for Transformative Research in Metabolism, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Robert H Coker
- Institute of Arctic Biology, Center for Transformative Research in Metabolism, University of Alaska Fairbanks, Fairbanks, AK, USA
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Nicolaas E P Deutz
- Center for Translational Research in Aging and Longevity, Department of Health and Kinesiology, Texas A&M University, College Station, TX, USA
| | - Kelly L Drew
- Department of Chemistry and Biochemistry, University of Alaska Fairbanks, Fairbanks, AK, USA.
- Institute of Arctic Biology, Center for Transformative Research in Metabolism, University of Alaska Fairbanks, Fairbanks, AK, USA.
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27
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Montgomery TL, Künstner A, Kennedy JJ, Fang Q, Asarian L, Culp-Hill R, D'Alessandro A, Teuscher C, Busch H, Krementsov DN. Interactions between host genetics and gut microbiota determine susceptibility to CNS autoimmunity. Proc Natl Acad Sci U S A 2020; 117:27516-27527. [PMID: 33077601 PMCID: PMC7959502 DOI: 10.1073/pnas.2002817117] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Multiple sclerosis (MS) is an autoimmune disease of the central nervous system. The etiology of MS is multifactorial, with disease risk determined by genetics and environmental factors. An emerging risk factor for immune-mediated diseases is an imbalance in the gut microbiome. However, the identity of gut microbes associated with disease risk, their mechanisms of action, and the interactions with host genetics remain obscure. To address these questions, we utilized the principal autoimmune model of MS, experimental autoimmune encephalomyelitis (EAE), together with a genetically diverse mouse model representing 29 unique host genotypes, interrogated by microbiome sequencing and targeted microbiome manipulation. We identified specific gut bacteria and their metabolic functions associated with EAE susceptibility, implicating short-chain fatty acid metabolism as a key element conserved across multiple host genotypes. In parallel, we used a reductionist approach focused on two of the most disparate phenotypes identified in our screen. Manipulation of the gut microbiome by transplantation and cohousing demonstrated that transfer of these microbiomes into genetically identical hosts was sufficient to modulate EAE susceptibility and systemic metabolite profiles. Parallel bioinformatic approaches identified Lactobacillus reuteri as a commensal species unexpectedly associated with exacerbation of EAE in a genetically susceptible host, which was functionally confirmed by bacterial isolation and commensal colonization studies. These results reveal complex interactions between host genetics and gut microbiota modulating susceptibility to CNS autoimmunity, providing insights into microbiome-directed strategies aimed at lowering the risk for autoimmune disease and underscoring the need to consider host genetics and baseline gut microbiome composition.
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Affiliation(s)
- Theresa L Montgomery
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05401
| | - Axel Künstner
- Medical Systems Biology Group, Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany
- Institute for Cardiogenetics, University of Lübeck, 23562 Lübeck, Germany
| | - Josephine J Kennedy
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05401
| | - Qian Fang
- Department of Medicine, Immunobiology Division, University of Vermont, Burlington, VT 05401
| | - Lori Asarian
- Department of Medicine, Immunobiology Division, University of Vermont, Burlington, VT 05401
| | - Rachel Culp-Hill
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO 80045
| | - Angelo D'Alessandro
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO 80045
| | - Cory Teuscher
- Department of Medicine, Immunobiology Division, University of Vermont, Burlington, VT 05401
| | - Hauke Busch
- Medical Systems Biology Group, Lübeck Institute of Experimental Dermatology, University of Lübeck, 23562 Lübeck, Germany
- Institute for Cardiogenetics, University of Lübeck, 23562 Lübeck, Germany
| | - Dimitry N Krementsov
- Department of Biomedical and Health Sciences, University of Vermont, Burlington, VT 05401;
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28
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Stevens BM, Jones CL, Pollyea DA, Culp-Hill R, D'Alessandro A, Winters A, Krug A, Abbott D, Goosman M, Pei S, Ye H, Gillen AE, Becker MW, Savona MR, Smith C, Jordan CT. Fatty acid metabolism underlies venetoclax resistance in acute myeloid leukemia stem cells. ACTA ACUST UNITED AC 2020; 1:1176-1187. [PMID: 33884374 DOI: 10.1038/s43018-020-00126-z] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Venetoclax with azacitidine (ven/aza) has emerged as a promising regimen for acute myeloid leukemia (AML), with a high percentage of clinical remissions in newly diagnosed patients. However, approximately 30% of newly diagnosed and the majority of relapsed patients do not achieve remission with ven/aza. We previously reported that ven/aza efficacy is based on eradication of AML stem cells through a mechanism involving inhibition of amino acid metabolism, a process which is required in primitive AML cells to drive oxidative phosphorylation. Herein we demonstrate that resistance to ven/aza occurs via up-regulation of fatty acid oxidation (FAO), which occurs due to RAS pathway mutations, or as a compensatory adaptation in relapsed disease. Utilization of FAO obviates the need for amino acid metabolism, thereby rendering ven/aza ineffective. Pharmacological inhibition of FAO restores sensitivity to ven/aza in drug resistant AML cells. We propose inhibition of FAO as a therapeutic strategy to address ven/aza resistance.
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Affiliation(s)
- Brett M Stevens
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Courtney L Jones
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Daniel A Pollyea
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Rachel Culp-Hill
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045
| | - Angelo D'Alessandro
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045.,Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045
| | - Amanda Winters
- Divsion of Pediatric Hematology and Oncology, University of Colorado Denver, Aurora, CO 80045
| | - Anna Krug
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Diana Abbott
- Department of Biostatistics and Informatics, University of Colorado Denver, Aurora, CO 80045
| | - Madeline Goosman
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Shanshan Pei
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Haobin Ye
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Austin E Gillen
- RNA Bioscience Initiative, University of Colorado School of Medicine, Aurora, CO, USA
| | - Michael W Becker
- Department of Medicine, James P. Wilmot Cancer Center, Rochester, NY, USA
| | - Michael R Savona
- Department of Internal Medicine, Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville, TN, USA
| | - Clayton Smith
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
| | - Craig T Jordan
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045
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29
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Singhal NS, Bai M, Lee EM, Luo S, Cook KR, Ma DK. Cytoprotection by a naturally occurring variant of ATP5G1 in Arctic ground squirrel neural progenitor cells. eLife 2020; 9:55578. [PMID: 33050999 PMCID: PMC7671683 DOI: 10.7554/elife.55578] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 10/08/2020] [Indexed: 02/06/2023] Open
Abstract
Many organisms in nature have evolved mechanisms to tolerate severe hypoxia or ischemia, including the hibernation-capable Arctic ground squirrel (AGS). Although hypoxic or ischemia tolerance in AGS involves physiological adaptations, little is known about the critical cellular mechanisms underlying intrinsic AGS cell resilience to metabolic stress. Through cell survival-based cDNA expression screens in neural progenitor cells, we identify a genetic variant of AGS Atp5g1 that confers cell resilience to metabolic stress. Atp5g1 encodes a subunit of the mitochondrial ATP synthase. Ectopic expression in mouse cells and CRISPR/Cas9 base editing of endogenous AGS loci revealed causal roles of one AGS-specific amino acid substitution in mediating cytoprotection by AGS ATP5G1. AGS ATP5G1 promotes metabolic stress resilience by modulating mitochondrial morphological change and metabolic functions. Our results identify a naturally occurring variant of ATP5G1 from a mammalian hibernator that critically contributes to intrinsic cytoprotection against metabolic stress. When animals hibernate, they lower their body temperature and metabolism to conserve the energy they need to withstand cold harsh winters. One such animal is the Arctic ground squirrel, an extreme hibernator that can drop its body temperatures to below 0°C. This hibernation ability means the cells of Arctic ground squirrels can survive severe shortages of blood and oxygen. But, it is unclear how their cells are able to endure this metabolic stress. To answer this question, Singhal, Bai et al. studied the cells of Arctic ground squirrels for unique features that might make them more durable to stress. Examining the genetic code of these resilient cells revealed that Arctic ground squirrels may have a variant form of a protein called ATP5G1. This protein is found in a cellular compartment called the mitochondria, which is responsible for supplying energy to the rest of the cell and therefore plays an important role in metabolic processes. Singhal, Bai et al. found that when this variant form of ATP5G1 was introduced into the cells of mice, their mitochondria was better at coping with stress conditions, such as low oxygen, low temperature and poisoning. Using a gene editing tool to selectively substitute some of the building blocks, also known as amino acids, that make up the ATP5G1 protein revealed that improvements to the mitochondria were caused by switching specific amino acids. However, swapping these amino acids, which presumably affects the role of ATP5G1, did not completely remove the cells’ resilience to stress. This suggests that variants of other genes and proteins may also be involved in providing protection. These findings provide the first evidence of a protein variant that is responsible for protecting cells during the metabolic stress conditions caused by hibernation. The approach taken by Singhal, Bai et al. could be used to identify and study other proteins that increase resilience to metabolic stress. These findings could help develop new treatments for diseases caused by a limited blood supply to human organs, such as a stroke or heart attack.
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Affiliation(s)
- Neel S Singhal
- Department of Neurology, University of California-San Francisco, San Francisco, United States
| | - Meirong Bai
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, United States.,Department of Physiology, University of California-San Francisco, San Francisco, United States
| | - Evan M Lee
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, United States.,Department of Physiology, University of California-San Francisco, San Francisco, United States
| | - Shuo Luo
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, United States.,Department of Physiology, University of California-San Francisco, San Francisco, United States
| | - Kayleigh R Cook
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, United States.,Department of Physiology, University of California-San Francisco, San Francisco, United States
| | - Dengke K Ma
- Cardiovascular Research Institute, University of California-San Francisco, San Francisco, United States.,Department of Physiology, University of California-San Francisco, San Francisco, United States.,Innovative Genomics Institute, Berkeley, United States
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30
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Jones CL, Stevens BM, Pollyea DA, Culp-Hill R, Reisz JA, Nemkov T, Gehrke S, Gamboni F, Krug A, Winters A, Pei S, Gustafson A, Ye H, Inguva A, Amaya M, Minhajuddin M, Abbott D, Becker MW, DeGregori J, Smith CA, D'Alessandro A, Jordan CT. Nicotinamide Metabolism Mediates Resistance to Venetoclax in Relapsed Acute Myeloid Leukemia Stem Cells. Cell Stem Cell 2020; 27:748-764.e4. [PMID: 32822582 DOI: 10.1016/j.stem.2020.07.021] [Citation(s) in RCA: 112] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2019] [Revised: 02/28/2020] [Accepted: 07/29/2020] [Indexed: 12/31/2022]
Abstract
We previously demonstrated that leukemia stem cells (LSCs) in de novo acute myeloid leukemia (AML) patients are selectively reliant on amino acid metabolism and that treatment with the combination of venetoclax and azacitidine (ven/aza) inhibits amino acid metabolism, leading to cell death. In contrast, ven/aza fails to eradicate LSCs in relapsed/refractory (R/R) patients, suggesting altered metabolic properties. Detailed metabolomic analysis revealed elevated nicotinamide metabolism in relapsed LSCs, which activates both amino acid metabolism and fatty acid oxidation to drive OXPHOS, thereby providing a means for LSCs to circumvent the cytotoxic effects of ven/aza therapy. Genetic and pharmacological inhibition of nicotinamide phosphoribosyltransferase (NAMPT), the rate-limiting enzyme in nicotinamide metabolism, demonstrated selective eradication of R/R LSCs while sparing normal hematopoietic stem/progenitor cells. Altogether, these findings demonstrate that elevated nicotinamide metabolism is both the mechanistic basis for ven/aza resistance and a metabolic vulnerability of R/R LSCs.
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Affiliation(s)
- Courtney L Jones
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA.
| | - Brett M Stevens
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Daniel A Pollyea
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Rachel Culp-Hill
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Julie A Reisz
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Travis Nemkov
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Sarah Gehrke
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Fabia Gamboni
- Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Anna Krug
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Amanda Winters
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Shanshan Pei
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Annika Gustafson
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Haobin Ye
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Anagha Inguva
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Maria Amaya
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | | | - Diana Abbott
- Department of Biostatistics and Informatics, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Michael W Becker
- Department of Medicine, Division of Hematology/Oncology, University of Rochester, Rochester, NY 14627, USA
| | - James DeGregori
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA; Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Clayton A Smith
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA
| | - Angelo D'Alessandro
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA; Department of Biochemistry and Molecular Genetics, University of Colorado Denver, Aurora, CO 80045, USA
| | - Craig T Jordan
- Division of Hematology, University of Colorado Denver, Aurora, CO 80045, USA.
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