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Kulow VA, Roegner K, Labes R, Kasim M, Mathia S, Czopek CS, Berndt N, Becker PN, Ter-Avetisyan G, Luft FC, Enghard P, Hinze C, Klocke J, Eckardt KU, Schmidt-Ott KM, Persson PB, Rosenberger C, Fähling M. Beyond hemoglobin: Critical role of 2,3-bisphosphoglycerate mutase in kidney function and injury. Acta Physiol (Oxf) 2024:e14242. [PMID: 39422260 DOI: 10.1111/apha.14242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2024] [Revised: 10/02/2024] [Accepted: 10/03/2024] [Indexed: 10/19/2024]
Abstract
AIM 2,3-bisphosphoglycerate mutase (BPGM) is traditionally recognized for its role in modulating oxygen affinity to hemoglobin in erythrocytes. Recent transcriptomic analyses, however, have indicated a significant upregulation of BPGM in acutely injured murine and human kidneys, suggesting a potential renal function for this enzyme. Here we aim to explore the physiological role of BPGM in the kidney. METHODS A tubular-specific, doxycycline-inducible Bpgm-knockout mouse model was generated. Histological, immunofluorescence, and proteomic analyses were conducted to examine the localization of BPGM expression and the impact of its knockout on kidney structure and function. In vitro studies were performed to investigate the metabolic consequences of Bpgm knockdown under osmotic stress. RESULTS BPGM expression was localized to the distal nephron and was absent in proximal tubules. Inducible knockout of Bpgm resulted in rapid kidney injury within 4 days, characterized by proximal tubular damage and tubulointerstitial fibrosis. Proteomic analyses revealed involvement of BPGM in key metabolic pathways, including glycolysis, oxidative stress response, and inflammation. In vitro, Bpgm knockdown led to enhanced glycolysis, decreased reactive oxygen species elimination capacity under osmotic stress, and increased apoptosis. Furthermore, interactions between nephron segments and immune cells in the kidney suggested a mechanism for propagating stress signals from distal to proximal tubules. CONCLUSION BPGM fulfills critical functions beyond the erythrocyte in maintaining glucose metabolism in the distal nephron. Its absence leads to metabolic imbalances, increased oxidative stress, inflammation, and ultimately kidney injury.
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Affiliation(s)
- Vera A Kulow
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Kameliya Roegner
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Robert Labes
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Mumtaz Kasim
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Susanne Mathia
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Claudia S Czopek
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Nikolaus Berndt
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), Nuthetal, Germany
- Deutsches Herzzentrum der Charité (DHZC), Institute of Computer-assisted Cardiovascular Medicine, Berlin, Germany
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp N Becker
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Gohar Ter-Avetisyan
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Friedrich C Luft
- Experimental and Clinical Research Center (ECRC), Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Philipp Enghard
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
| | - Christian Hinze
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Jan Klocke
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
| | - Kai-Uwe Eckardt
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
| | - Kai M Schmidt-Ott
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
- Department of Nephrology and Hypertension, Hannover Medical School, Hannover, Germany
| | - Pontus B Persson
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
| | - Christian Rosenberger
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Medizinische Klinik m.S. Nephrologie und Internistische Intensivmedizin (CCM), Berlin, Germany
| | - Michael Fähling
- Charité-Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institut für Translationale Physiologie (CCM), Berlin, Germany
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2
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Stroganov S, Harris T, Fellus-Alyagor L, Ben Moyal L, Plitman Mayo R, Golani O, Hirsch D, Ben-Dor S, Brandis A, Mehlman T, Kovo M, Biron-Shental T, Dekel N, Neeman M. The differential regulation of placenta trophoblast bisphosphoglycerate mutase in fetal growth restriction: preclinical study in mice and observational histological study of human placenta. eLife 2024; 13:e82631. [PMID: 38314803 PMCID: PMC10883672 DOI: 10.7554/elife.82631] [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: 08/11/2022] [Accepted: 01/25/2024] [Indexed: 02/07/2024] Open
Abstract
Background Fetal growth restriction (FGR) is a pregnancy complication in which a newborn fails to achieve its growth potential, increasing the risk of perinatal morbidity and mortality. Chronic maternal gestational hypoxia, as well as placental insufficiency are associated with increased FGR incidence; however, the molecular mechanisms underlying FGR remain unknown. Methods Pregnant mice were subjected to acute or chronic hypoxia (12.5% O2) resulting in reduced fetal weight. Placenta oxygen transport was assessed by blood oxygenation level dependent (BOLD) contrast magnetic resonance imaging (MRI). The placentae were analyzed via immunohistochemistry and in situ hybridization. Human placentae were selected from FGR and matched controls and analyzed by immunohistochemistry (IHC). Maternal and cord sera were analyzed by mass spectrometry. Results We show that murine acute and chronic gestational hypoxia recapitulates FGR phenotype and affects placental structure and morphology. Gestational hypoxia decreased labyrinth area, increased the incidence of red blood cells (RBCs) in the labyrinth while expanding the placental spiral arteries (SpA) diameter. Hypoxic placentae exhibited higher hemoglobin-oxygen affinity compared to the control. Placental abundance of Bisphosphoglycerate mutase (BPGM) was upregulated in the syncytiotrophoblast and spiral artery trophoblast cells (SpA TGCs) in the murine gestational hypoxia groups compared to the control. Hif1α levels were higher in the acute hypoxia group compared to the control. In contrast, human FGR placentae exhibited reduced BPGM levels in the syncytiotrophoblast layer compared to placentae from healthy uncomplicated pregnancies. Levels of 2,3 BPG, the product of BPGM, were lower in cord serum of human FGR placentae compared to control. Polar expression of BPGM was found in both human and mouse placentae syncytiotrophoblast, with higher expression facing the maternal circulation. Moreover, in the murine SpA TGCs expression of BPGM was concentrated exclusively in the apical cell side, in direct proximity to the maternal circulation. Conclusions This study suggests a possible involvement of placental BPGM in maternal-fetal oxygen transfer, and in the pathophysiology of FGR. Funding This work was supported by the Weizmann Krenter Foundation and the Weizmann - Ichilov (Tel Aviv Sourasky Medical Center) Collaborative Grant in Biomedical Research, by the Minerva Foundation, by the ISF KillCorona grant 3777/19.
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Affiliation(s)
- Sima Stroganov
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Talia Harris
- Chemical Research Support Weizmann Institute of Science, Rehovot, Israel
| | | | - Lital Ben Moyal
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Romina Plitman Mayo
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Ofra Golani
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Dana Hirsch
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Shifra Ben-Dor
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Alexander Brandis
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Tevie Mehlman
- Life Science Core Facilities, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Kovo
- OBGYN, Meir Medical Center, Kfar Saba, Israel
- Tel Aviv University, School of Medicine, Tel Aviv, Israel
| | - Tal Biron-Shental
- OBGYN, Meir Medical Center, Kfar Saba, Israel
- Tel Aviv University, School of Medicine, Tel Aviv, Israel
| | - Nava Dekel
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
| | - Michal Neeman
- Immunology and Regenerative Biology, Weizmann Institute of Science, Rehovot, Israel
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3
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Azzuolo A, Yang Y, Berghuis A, Fodil N, Gros P. Biphosphoglycerate Mutase: A Novel Therapeutic Target for Malaria? Transfus Med Rev 2023; 37:150748. [PMID: 37827586 DOI: 10.1016/j.tmrv.2023.150748] [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: 03/23/2023] [Revised: 06/22/2023] [Accepted: 06/28/2023] [Indexed: 10/14/2023]
Abstract
Biphosphoglycerate mutase (BPGM) is a tri-functional enzyme expressed exclusively in erythroid cells and tissues that is responsible for the production of 2,3-biphosphoglycerate (2,3-BPG) through the Rapoport-Luebering shunt. The 2,3-BPG is required for efficient glycolysis and ATP production under anaerobic conditions, but is also a critical allosteric regulator of hemoglobin (Hb), acting to regulate oxygen release in peripheral tissues. In humans, BPGM deficiency is very rare, and is associated with reduced levels of erythrocytic 2,3-BPG and ATP, left shifted Hb-O2 dissociation curve, low P50, elevated Hb and constitutive erythrocytosis. BPGM deficiency in mice recapitulates the erythroid defects seen in human patients. A recent report has shown that BPGM deficiency in mice affords striking protection against both severe malaria anemia and cerebral malaria. These findings are reminiscent of studies of another erythrocyte specific glycolytic enzyme, Pyruvate Kinase (PKLR), which mutational inactivation protects humans and mice against malaria through impairment of glycolysis and ATP production in erythrocytes. BPGM, and PKLR join glucose-6-phosphate dehydrogenase (G6PD) and other erythrocyte variants as modulating response to malaria. Recent studies reviewed suggest glycolysis in general, and BPGM in particular, as a novel pharmacological target for therapeutic intervention in malaria.
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Affiliation(s)
- Alessia Azzuolo
- Department of Biochemistry, Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada; Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada
| | - Yunxiang Yang
- Department of Biochemistry, Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada; Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada
| | - Albert Berghuis
- Department of Biochemistry, Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada
| | - Nassima Fodil
- Department of Biochemistry, Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada; Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada
| | - Philippe Gros
- Department of Biochemistry, Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada; Dahdaleh Institute of Genomic Medicine, McGill University, Montreal, Quebec, Canada.
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4
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Alramadhani D, Aljahdali AS, Abdulmalik O, Pierce BD, Safo MK. Metabolic Reprogramming in Sickle Cell Diseases: Pathophysiology and Drug Discovery Opportunities. Int J Mol Sci 2022; 23:7448. [PMID: 35806451 PMCID: PMC9266828 DOI: 10.3390/ijms23137448] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Revised: 06/27/2022] [Accepted: 06/30/2022] [Indexed: 01/19/2023] Open
Abstract
Sickle cell disease (SCD) is a genetic disorder that affects millions of individuals worldwide. Chronic anemia, hemolysis, and vasculopathy are associated with SCD, and their role has been well characterized. These symptoms stem from hemoglobin (Hb) polymerization, which is the primary event in the molecular pathogenesis of SCD and contributes to erythrocyte or red blood cell (RBC) sickling, stiffness, and vaso-occlusion. The disease is caused by a mutation at the sixth position of the β-globin gene, coding for sickle Hb (HbS) instead of normal adult Hb (HbA), which under hypoxic conditions polymerizes into rigid fibers to distort the shapes of the RBCs. Only a few therapies are available, with the universal effectiveness of recently approved therapies still being monitored. In this review, we first focus on how sickle RBCs have altered metabolism and then highlight how this understanding reveals potential targets involved in the pathogenesis of the disease, which can be leveraged to create novel therapeutics for SCD.
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Affiliation(s)
- Dina Alramadhani
- Department of Medicinal Chemistry and the Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Anfal S. Aljahdali
- Department of Pharmaceutical Chemistry, King Abdulaziz University, Alsulaymanyah, Jeddah 21589, Saudi Arabia;
| | - Osheiza Abdulmalik
- Division of Hematology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA;
| | - B. Daniel Pierce
- Department of Biology, University of Richmond, Richmond, VA 23173, USA;
| | - Martin K. Safo
- Department of Medicinal Chemistry and the Institute for Structural Biology, Drug Discovery and Development, School of Pharmacy, Virginia Commonwealth University, Richmond, VA 23298, USA;
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5
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Lim M, Brown HM, Rose RD, Thompson JG, Dunning KR. Dysregulation of bisphosphoglycerate mutase during in vitro maturation of oocytes. J Assist Reprod Genet 2021; 38:1363-1372. [PMID: 34052998 DOI: 10.1007/s10815-021-02230-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 05/11/2021] [Indexed: 11/26/2022] Open
Abstract
PURPOSE Oxygen is vital for oocyte maturation; however, oxygen regulation within ovarian follicles is not fully understood. Hemoglobin is abundant within the in vivo matured oocyte, indicating potential function as an oxygen regulator. However, hemoglobin is significantly reduced following in vitro maturation (IVM). The molecule 2,3-bisphosphoglycerate (2,3-BPG) is essential in red blood cells, facilitating release of oxygen from hemoglobin. Towards understanding the role of 2,3-BPG in the oocyte, we characterized gene expression and protein abundance of bisphosphoglycerate mutase (Bpgm), which synthesizes 2,3-BPG, and whether this is altered under low oxygen or hemoglobin addition during IVM. METHODS Hemoglobin and Bpgm expression within in vivo matured human cumulus cells and mouse cumulus-oocyte complexes (COCs) were evaluated to determine physiological levels of Bpgm. During IVM, Bpgm gene expression and protein abundance were analyzed in the presence or absence of low oxygen (2% and 5% oxygen) or exogenous hemoglobin. RESULTS The expression of Bpgm was significantly lower than hemoglobin when mouse COCs were matured in vivo. Following IVM at 20% oxygen, Bpgm gene expression and protein abundance were significantly higher compared to in vivo. At 2% oxygen, Bpgm was significantly higher compared to 20% oxygen, while exogenous hemoglobin resulted in significantly lower Bpgm in the COC. CONCLUSION Hemoglobin and 2,3-BPG may play a role within the maturing COC. This study shows that IVM increases Bpgm within COCs compared to in vivo. Decreasing oxygen concentration and the addition of hemoglobin altered Bpgm, albeit not to levels observed in vivo.
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Affiliation(s)
- Megan Lim
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia
| | - Hannah M Brown
- The Victorian Heart Institute, Monash University, Melbourne, Victoria, Australia
| | - Ryan D Rose
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Fertility SA, St. Andrews Hospital, South Terrace, Adelaide, South Australia, Australia
| | - Jeremy G Thompson
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia, Australia
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia
| | - Kylie R Dunning
- Robinson Research Institute, The University of Adelaide, Adelaide, South Australia, Australia.
- Australian Research Council Centre of Excellence for Nanoscale BioPhotonics, The University of Adelaide, Adelaide, South Australia, Australia.
- Institute for Photonics and Advanced Sensing, The University of Adelaide, Adelaide, South Australia, Australia.
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6
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Yin GQ, Zeng HX, Li ZL, Chen C, Zhong JY, Xiao MS, Zeng Q, Jiang WH, Wu PQ, Zeng JM, Hu XY, Chen HH, Ruo-Hu, Zhao HJ, Gao L, Liu C, Cai SX. Differential proteomic analysis of children infected with respiratory syncytial virus. Braz J Med Biol Res 2021; 54:e9850. [PMID: 33656056 PMCID: PMC7917709 DOI: 10.1590/1414-431x20209850] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 11/16/2020] [Indexed: 01/09/2023] Open
Abstract
Respiratory syncytial virus (RSV) infection is the main cause of lower respiratory tract infection in children. However, there is no effective treatment for RSV infection. Here, we aimed to identify potential biomarkers to aid in the treatment of RSV infection. Children in the acute and convalescence phases of RSV infection were recruited and proteomic analysis was performed to identify differentially expressed proteins (DEPs). Subsequently, promising candidate proteins were determined by functional enrichment and protein-protein interaction network analysis, and underwent further validation by western blot both in clinical and mouse model samples. Among the 79 DEPs identified in RSV patient samples, 4 proteins (BPGM, TPI1, PRDX2, and CFL1) were confirmed to be significantly upregulated during RSV infection. Functional analysis showed that BPGM and TPI1 were mainly involved in glycolysis, indicating an association between RSV infection and the glycolysis metabolic pathway. Our findings provide insights into the proteomic profile during RSV infection and indicated that BPGM, TPI1, PRDX2, and CFL1 may be potential therapeutic biomarkers or targets for the treatment of RSV infection.
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Affiliation(s)
- Gen-Quan Yin
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Hui-Xuan Zeng
- Department of General Practice Medicine, the First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China
| | - Zi-Long Li
- Pediatric Research Institute, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Chen Chen
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jia-Yong Zhong
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Mi-Si Xiao
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Qiang Zeng
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Wen-Hui Jiang
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Pei-Qiong Wu
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Jie-Min Zeng
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Xiao-Yin Hu
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Huan-Hui Chen
- Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Ruo-Hu
- College of Computer Science, Guangdong Polytechnic Normal University, Guangzhou, Guangdong, China
| | - Hai-Jin Zhao
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lin Gao
- Guangdong Food and Drug Vocational College, Guangzhou, Guangdong, China
| | - Cong Liu
- Department of Cardiology, Shenzhen Children's Hospital, Shenzhen, China
| | - Shao-Xi Cai
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
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7
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Funato K, Abe T, Kurita R, Watanabe Y, Nakamura Y, Miyata S, Furukawa Y, Satake M. Identification of characteristic proteins at late-stage erythroid differentiation in vitro. Hum Cell 2021; 34:745-749. [PMID: 33616868 DOI: 10.1007/s13577-021-00503-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 02/05/2021] [Indexed: 01/01/2023]
Abstract
The production of red blood cells in vitro, which is useful for basic or clinical research, has been improved. Further optimization of culture protocols may facilitate erythroid differentiation from hematopoietic stem cells to red blood cells. However, the details of erythropoiesis, particularly regarding the behaviors of differentiation-related proteins, remain unclear. Here, we performed erythroid differentiation using two independent bone marrow- or cord blood-derived CD34+ cell sources and identified proteins showing reproducible differential expression in all groups. Notably, most of the proteins expressed at the early stage were downregulated during erythroid differentiation. However, seven proteins showed upregulated expression in both bone marrow cells and cord blood cells. These proteins included alpha-synuclein and selenium-binding protein 1, the roles of which have not been clarified in erythropoiesis. There is a possibility that these factors contribute to erythroid differentiation as they maintained a high expression level. These findings provide a foundation for further mechanistic studies on erythropoiesis.
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Affiliation(s)
- Koji Funato
- Department of Research and Development, Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tatsumi 2-1-67, Koto-ku, Tokyo , 135-8521, Japan
- Division of Stem Cell Regulation, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Takaaki Abe
- Department of Research and Development, Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tatsumi 2-1-67, Koto-ku, Tokyo , 135-8521, Japan
| | - Ryo Kurita
- Department of Research and Development, Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tatsumi 2-1-67, Koto-ku, Tokyo , 135-8521, Japan.
| | - Yoshihisa Watanabe
- Department of Research and Development, Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tatsumi 2-1-67, Koto-ku, Tokyo , 135-8521, Japan
| | - Yukio Nakamura
- Cell Engineering Division, RIKEN BioResource Center, Ibaraki, Japan
| | - Shigeki Miyata
- Department of Research and Development, Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tatsumi 2-1-67, Koto-ku, Tokyo , 135-8521, Japan
| | - Yusuke Furukawa
- Division of Stem Cell Regulation, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Masahiro Satake
- Department of Research and Development, Central Blood Institute, Blood Service Headquarters, Japanese Red Cross Society, Tatsumi 2-1-67, Koto-ku, Tokyo , 135-8521, Japan
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8
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Wang G, Huang Y, Zhang N, Liu W, Wang C, Zhu X, Ni X. Hydrogen Sulfide Is a Regulator of Hemoglobin Oxygen-Carrying Capacity via Controlling 2,3-BPG Production in Erythrocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:8877691. [PMID: 33628390 PMCID: PMC7896853 DOI: 10.1155/2021/8877691] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 01/19/2021] [Accepted: 01/25/2021] [Indexed: 12/18/2022]
Abstract
Hydrogen sulfide (H2S) is naturally synthesized in a wide range of mammalian tissues. Whether H2S is involved in the regulation of erythrocyte functions remains unknown. Using mice with a genetic deficiency in a H2S natural synthesis enzyme cystathionine-γ-lyase (CSE) and high-throughput metabolomic profiling, we found that levels of erythrocyte 2,3-bisphosphoglycerate (2,3-BPG), an erythroid-specific metabolite negatively regulating hemoglobin- (Hb-) oxygen (O2) binding affinity, were increased in CSE knockout (Cse -/-) mice under normoxia. Consistently, the 50% oxygen saturation (P50) value was increased in erythrocytes of Cse -/- mice. These effects were reversed by treatment with H2S donor GYY4137. In the models of cultured mouse and human erythrocytes, we found that H2S directly acts on erythrocytes to decrease 2,3-BPG production, thereby enhancing Hb-O2 binding affinity. Mouse genetic studies showed that H2S produced by peripheral tissues has a tonic inhibitory effect on 2,3-BPG production and consequently maintains Hb-O2 binding affinity in erythrocytes. We further revealed that H2S promotes Hb release from the membrane to the cytosol and consequently enhances bisphosphoglycerate mutase (BPGM) anchoring to the membrane. These processes might be associated with S-sulfhydration of Hb. Moreover, hypoxia decreased the circulatory H2S level and increased the erythrocyte 2,3-BPG content in mice, which could be reversed by GYY4137 treatment. Altogether, our study revealed a novel signaling pathway that regulates oxygen-carrying capacity in erythrocytes and highlights a previously unrecognized role of H2S in erythrocyte 2,3-BPG production.
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Affiliation(s)
- Gang Wang
- National Clinical Research Center for Geriatric Disorders and National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, 410008 Hunan, China
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
- National Clinical Research Center of Kidney Diseases, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China
| | - Yan Huang
- National Clinical Research Center for Geriatric Disorders and National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, 410008 Hunan, China
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
- General Hospital of Southern Theater Command, Guangzhou, 510010 Guangdong, China
| | - Ningning Zhang
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Wenhu Liu
- National Clinical Research Center for Geriatric Disorders and National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, 410008 Hunan, China
| | - Changnan Wang
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Xiaoyan Zhu
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Xin Ni
- National Clinical Research Center for Geriatric Disorders and National International Joint Research Center for Medical Metabolomics, Xiangya Hospital, Central South University, Changsha, 410008 Hunan, China
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
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9
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Rosario FJ, Powell TL, Gupta MB, Cox L, Jansson T. mTORC1 Transcriptional Regulation of Ribosome Subunits, Protein Synthesis, and Molecular Transport in Primary Human Trophoblast Cells. Front Cell Dev Biol 2020; 8:583801. [PMID: 33324640 PMCID: PMC7726231 DOI: 10.3389/fcell.2020.583801] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 10/20/2020] [Indexed: 12/12/2022] Open
Abstract
Mechanistic Target of Rapamycin Complex 1 (mTORC1) serves as positive regulator of placental nutrient transport and mitochondrial respiration. The role of mTORC1 signaling in modulating other placental functions is largely unexplored. We used gene array following silencing of raptor to identify genes regulated by mTORC1 in primary human trophoblast (PHT) cells. Seven hundred and thirty-nine genes were differentially expressed; 487 genes were down-regulated and 252 up-regulated. Bioinformatic analyses demonstrated that inhibition of mTORC1 resulted in decreased expression of genes encoding ribosomal proteins in the 60S and 40S ribosome subunits. Furthermore, down-regulated genes were functionally enriched in genes involved in eIF2, sirtuin and mTOR signaling, mitochondrial function, and glutamine and zinc transport. Stress response genes were enriched among up-regulated genes following mTORC1 inhibition. The protein expression of ribosomal proteins RPL26 (RPL26) and Ribosomal Protein S10 (RPS10) was decreased and positively correlated to mTORC1 signaling and System A amino acid transport in human placentas collected from pregnancies complicated by intrauterine growth restriction (IUGR). In conclusion, mTORC1 signaling regulates the expression of trophoblast genes involved in ribosome and protein synthesis, mitochondrial function, lipid metabolism, nutrient transport, and angiogenesis, representing novel links between mTOR signaling and multiple placental functions critical for normal fetal growth and development.
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Affiliation(s)
- Fredrick J. Rosario
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Theresa L. Powell
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
- Section of Neonatology, Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Madhulika B. Gupta
- Department of Biochemistry, University of Western Ontario, London, ON, Canada
| | - Laura Cox
- Center for Precision Medicine, Department of Internal Medicine, Section of Molecular Medicine, Wake Forest School of Medicine, Winston-Salem, NC, United States
| | - Thomas Jansson
- Division of Reproductive Sciences, Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
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10
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Xu G, van Bruggen R, Gualtieri CO, Moradin N, Fois A, Vallerand D, De Sa Tavares Russo M, Bassenden A, Lu W, Tam M, Lesage S, Girouard H, Avizonis DZ, Deblois G, Prchal JT, Stevenson M, Berghuis A, Muir T, Rabinowitz J, Vidal SM, Fodil N, Gros P. Bisphosphoglycerate Mutase Deficiency Protects against Cerebral Malaria and Severe Malaria-Induced Anemia. Cell Rep 2020; 32:108170. [PMID: 32966787 DOI: 10.1016/j.celrep.2020.108170] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 07/07/2020] [Accepted: 08/27/2020] [Indexed: 11/30/2022] Open
Abstract
The replication cycle and pathogenesis of the Plasmodium malarial parasite involves rapid expansion in red blood cells (RBCs), and variants of certain RBC-specific proteins protect against malaria in humans. In RBCs, bisphosphoglycerate mutase (BPGM) acts as a key allosteric regulator of hemoglobin/oxyhemoglobin. We demonstrate here that a loss-of-function mutation in the murine Bpgm (BpgmL166P) gene confers protection against both Plasmodium-induced cerebral malaria and blood-stage malaria. The malaria protection seen in BpgmL166P mutant mice is associated with reduced blood parasitemia levels, milder clinical symptoms, and increased survival. The protective effect of BpgmL166P involves a dual mechanism that enhances the host's stress erythroid response to Plasmodium-driven RBC loss and simultaneously alters the intracellular milieu of the RBCs, including increased oxyhemoglobin and reduced energy metabolism, reducing Plasmodium maturation, and replication. Overall, our study highlights the importance of BPGM as a regulator of hemoglobin/oxyhemoglobin in malaria pathogenesis and suggests a new potential malaria therapeutic target.
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Affiliation(s)
- Guoyue Xu
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada
| | - Rebekah van Bruggen
- McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada; Department of Biochemistry, McGill University, Montreal, QC H3A 1A3, Canada
| | - Christian O Gualtieri
- McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada; Department of Biochemistry, McGill University, Montreal, QC H3A 1A3, Canada
| | - Neda Moradin
- McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada
| | - Adrien Fois
- Immunology-Oncology Unit, Maisonneuve-Rosemont Hospital Research Center, Montréal, QC H1T 2M4, Canada; Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Diane Vallerand
- Université de Montréal, Département de Pharmacologie et Physiologie, Pav Roger-Gaudry, 2900 Édouard-Montpetit, Montréal, QC H3T 1J4, Canada
| | | | - Angelia Bassenden
- Department of Biochemistry, McGill University, Montreal, QC H3A 1A3, Canada
| | - Wenyun Lu
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA
| | - Mifong Tam
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Sylvie Lesage
- Immunology-Oncology Unit, Maisonneuve-Rosemont Hospital Research Center, Montréal, QC H1T 2M4, Canada; Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, QC H3T 1J4, Canada
| | - Hélène Girouard
- Université de Montréal, Département de Pharmacologie et Physiologie, Pav Roger-Gaudry, 2900 Édouard-Montpetit, Montréal, QC H3T 1J4, Canada
| | - Daina Zofija Avizonis
- Rosalind and Morris Goodman Cancer Research Centre, 1160 Pin Avenue West, Montréal, QC H3A 1A3, Canada
| | - Geneviève Deblois
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, QC H3T 1J4, Canada; Faculté de Pharmacie, Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Josef T Prchal
- Division of Hematology, School of Medicine, University of Utah, Salt Lake City, UT 84132, USA
| | - Mary Stevenson
- Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Albert Berghuis
- Department of Biochemistry, McGill University, Montreal, QC H3A 1A3, Canada
| | - Tom Muir
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
| | - Joshua Rabinowitz
- Lewis Sigler Institute for Integrative Genomics, Princeton University, Princeton, NJ 08544, USA; Department of Chemistry, Princeton University, Princeton, NJ 08544, USA
| | - Silvia M Vidal
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada; Department of Microbiology and Immunology, McGill University, Montréal, QC H3A 2B4, Canada
| | - Nassima Fodil
- McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada; Centre CERMO-FC Pavillon des Sciences Biologiques, 141 Avenue du Président Kennedy, Montréal, QC H2X 3Y7, Canada.
| | - Philippe Gros
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; McGill University Research Centre on Complex Traits, McGill University, Montreal, QC H3G 0B1, Canada; Department of Biochemistry, McGill University, Montreal, QC H3A 1A3, Canada.
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11
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Metabolomics of a mouse model of preeclampsia induced by overexpressing soluble fms-like tyrosine kinase 1. Biochem Biophys Res Commun 2020; 527:1064-1071. [PMID: 32448504 DOI: 10.1016/j.bbrc.2020.04.079] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 04/10/2020] [Indexed: 12/12/2022]
Abstract
Preeclampsia (PE) is a leading cause of maternal morbidity and mortality. Nicotinamide has beneficial effects on PE. In this study, we evaluated the effect of nicotinamide on placental development using a PE mouse model. To generate the PE model, a recombinant adenovirus to overproduce soluble fms-like tyrosine kinase 1 (sFlt-1) was administered to mice (Jcl:ICR) at 8.5 day post-coitum (dpc). Plasma and placenta samples were harvested at 12.5 dpc. Fetal and placental weight was significantly decreased at 12.5 dpc in PE mice. Plasma and placental acylcarnitine levels were significantly higher in PE mice than those in control mice. Glycolysis was accelerated and glucose metabolic flow was altered with hypoxia, leading to ATP shortage in the labyrinth of PE mice. In PE mice, ATP production was diminished, and fatty acid oxidation was accelerated in the placenta, consequently, blood carnitine and acylcarnitine levels were increased. The mitochondrial morphology in BeWo cells was impaired under hypoxia. Nicotinamide treatment reversed fetal growth restriction, placental development, and altered metabolic flow in the early stage in PE. In addition, nicotinamide normalized impaired mitochondrial morphology. Hence, targeting this metabolic alteration in the placenta using nicotinamide may serve as a potential therapeutic approach for PE treatment.
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12
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Semwal R, Aier I, Tyagi P, Varadwaj PK. DeEPn: a deep neural network based tool for enzyme functional annotation. J Biomol Struct Dyn 2020; 39:2733-2743. [PMID: 32274968 DOI: 10.1080/07391102.2020.1754292] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
With the advancement of high throughput techniques, the discovery rate of enzyme sequences has increased significantly in the recent past. All of these raw sequences are required to be precisely mapped to their respective functional attributes, which helps in deciphering their biological role. In the recent past, various prediction models have been proposed to predict the enzyme functional class; however, all of these models were able to quantify at most six functional enzyme classes (EC1 to EC6) out of existing seven functional classes, making these approaches inappropriate for handling enzymes corresponding to the seventh functional class (EC7). In this study, a Deep Neural Network-based approach, DeEPn, has been proposed, which can quantify enzymes corresponding to all seven functional classes with high precision and accuracy. The proposed model was compared with two recently developed tools, ECPred and SVM-Prot. The result demonstrated that DeEPn outperformed ECPred and SVM-Prot in terms of predictive quality. The DeEPn tool has been hosted as a web-based tool at https://bioserver.iiita.ac.in/DeEPn/.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Rahul Semwal
- Department of Information Technology (Bioinformatics), Indian Institute of Information Technology Allahabad, Allahabad, Uttar Pradesh, India
| | - Imlimaong Aier
- Department of Bioinformatics and Applied Science, Indian Institute of Information Technology, Allahabad, Allahabad, Uttar Pradesh, India
| | - Pankaj Tyagi
- Department of Information Technology (Bioinformatics), Indian Institute of Information Technology Allahabad, Allahabad, Uttar Pradesh, India
| | - Pritish Kumar Varadwaj
- Department of Bioinformatics and Applied Science, Indian Institute of Information Technology, Allahabad, Allahabad, Uttar Pradesh, India
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13
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Lim M, Brown HM, Kind KL, Breen J, Anastasi MR, Ritter LJ, Tregoweth EK, Dinh DT, Thompson JG, Dunning KR. Haemoglobin expression in in vivo murine preimplantation embryos suggests a role in oxygen-regulated gene expression. Reprod Fertil Dev 2019; 31:724-734. [PMID: 30482269 DOI: 10.1071/rd17321] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 10/24/2018] [Indexed: 01/17/2023] Open
Abstract
Haemoglobin expression is not restricted to erythroid cells. We investigated the gene expression of the haemoglobin subunits haemoglobin, alpha adult chain 1 (Hba-a1) and haemoglobin, beta (Hbb), 2,3-bisphosphoglycerate mutase (Bpgm) and the oxygen-regulated genes BCL2/adenovirus E1B interacting protein 3 (Bnip3), solute carrier family 2 (facilitated glucose transporter), member 1 (Slc2a1) and N-myc downstream regulated gene 1 (Ndrg1) in the murine preimplantation embryo, comparing invivo to invitro gene expression. Relatively high levels of Hba-a1 and Hbb were expressed invivo from the 2-cell to blastocyst stage; in contrast, little or no expression occurred invitro. We hypothesised that the presence of haemoglobin invivo creates a low oxygen environment to induce oxygen-regulated gene expression, supported by high expression of Slc2a1 and Ndrg1 in invivo relative to invitro embryos. In addition, analysis of an invitro-derived human embryo gene expression public dataset revealed low expression of haemoglobin subunit alpha (HBA) and HBB, and high expression of BPGM. To explore whether there was a developmental stage-specific effect of haemoglobin, we added exogenous haemoglobin either up to the 4-cell stage or throughout development to the blastocyst stage, but observed no difference in blastocyst rate or the inner cell mass to trophectoderm cell ratio. We conclude that haemoglobin in the invivo preimplantation embryo raises an interesting premise of potential mechanisms for oxygen regulation, which may influence oxygen-regulated gene expression.
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Affiliation(s)
- M Lim
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
| | - H M Brown
- South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - K L Kind
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
| | - J Breen
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
| | - M R Anastasi
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
| | - L J Ritter
- Adelaide Medical School, University of Adelaide, Adelaide, SA 5005, Australia
| | - E K Tregoweth
- Sansom Institute for Health Research, University of South Australia, Adelaide, SA 5005, Australia
| | - D T Dinh
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
| | - J G Thompson
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
| | - K R Dunning
- Robinson Research Institute, Adelaide Medical School, University of Adelaide, SA 5005, Australia
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14
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Gupta AK, Kumar GK, Rani K, Pokhriyal R, Khan MI, Kumar DR, Goyal V, Tripathi M, Gupta R, Chadda RK, Vanamail P, Mohanty AK, Hariprasad G. 2D-DIGE as a strategy to identify serum protein biomarkers to monitor pharmacological efficacy in dopamine-dictated states of Parkinson's disease and schizophrenia. Neuropsychiatr Dis Treat 2019; 15:1031-1044. [PMID: 31114209 PMCID: PMC6488160 DOI: 10.2147/ndt.s198559] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES Parkinson's disease and schizophrenia are clinical scenarios that occur due to dopaminergic deficit and hyperactivity in the midbrain, respectively. Current pharmacological interventions for these two diseases therefore aim to restore normal dopamine levels in the midbrain. But during therapy, there is a overshooting of dopamine concentrations that result in hallucinations in Parkinson's disease patients and extra-pyramidal symptoms in schizophrenic patients. This causes a lot of inconvenience to the patents and the clinicians. There are no tests currently available to monitor drug efficacy in these two neuropsychiatric diseases. MATERIALS AND METHODS Parkinson's disease and schizophrenic naïve patients were recruited. Serum proteins isolated from these two clinical phenotypes were labeled with fluorescent cyanine dyes and analyzed by two-dimensional difference in gel electrophoresis proteomic experiment. Differentially expressed spots that had consistent expression pattern across five sets of biological replicate gels were trypsin digested and subjected to mass spectrometric analysis for protein identification. Validation experiments were done for the identified proteins using antibody-based assay on a patient cohort that included naïve, treated, and those who had side effects. RESULTS Serum α- and β-globin chains were identified as differentially expressed proteins having threefold higher expressions in Parkinson's patients as compared to schizophrenia. Interestingly, concentrations of these two proteins had an inverse correlation across clinical phenotypes in the dopaminergic spectrum. RBC contamination as a source for these proteins was ruled out. CONCLUSION There is a clear association of free serum globin with dopaminergic clinical states. This lays a platform for protein biomarker-based monitoring of pharmacological efficacy in Parkinson's disease and schizophrenia.
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Affiliation(s)
- Ashish Kumar Gupta
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
| | - Gaurav Khunger Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
| | - Komal Rani
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
| | - Ruchika Pokhriyal
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
| | - Mohd Imran Khan
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
| | - Domada Ratna Kumar
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
| | - Vinay Goyal
- Department of Neurology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Manjari Tripathi
- Department of Neurology, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Rishab Gupta
- Department of Psychiatry, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Rakesh Kumar Chadda
- Department of Psychiatry, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Perumal Vanamail
- Department of Biostatistics, All India Institute of Medical Sciences, New Delhi 110029, India
| | - Ashok Kumar Mohanty
- Proteomics Facility, National Diary Research Institute, Karnal, Haryana 132001, India
| | - Gururao Hariprasad
- Department of Biophysics, All India Institute of Medical Sciences, New Delhi 110029, India,
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15
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Bisphosphoglycerate mutase controls serine pathway flux via 3-phosphoglycerate. Nat Chem Biol 2017; 13:1081-1087. [PMID: 28805803 PMCID: PMC5605442 DOI: 10.1038/nchembio.2453] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Accepted: 07/10/2017] [Indexed: 01/16/2023]
Abstract
Lower glycolysis involves a series of reversible reactions, which interconvert intermediates that also feed anabolic pathways. 3-phosphoglycerate (3-PG) is an abundant lower glycolytic intermediate that feeds serine biosynthesis via the enzyme phosphoglycerate dehydrogenase, which is genomically amplified in several cancers. Phosphoglycerate mutase (PGAM1) catalyzes the isomerization of 3-PG into the downstream glycolytic intermediate 2-phosphoglycerate (2-PG). Catalytic activity of PGAM1 requires its histidine phosphorylation. We show that the primary PGAM1 histidine phosphate donor is 2,3-bisphosphoglycerate (2,3-BPG), which is made from the glycolytic intermediate 1,3-bisphosphoglycerate (1,3-BPG) by bisphosphoglycerate mutase (BPGM). When BPGM is knocked out, 1,3-BPG can directly phosphorylate PGAM1. In this case, PGAM1 phosphorylation and activity are decreased, but nevertheless sufficient to maintain normal glycolytic flux and cellular growth rate. 3-PG, however, accumulates, leading to increased serine synthesis. Thus, one biological function of BPGM is to control glycolytic intermediate levels and thereby serine biosynthetic flux.
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16
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Kim W, Park H, Seo S. Global Metabolic Reconstruction and Metabolic Gene Evolution in the Cattle Genome. PLoS One 2016; 11:e0150974. [PMID: 26992093 PMCID: PMC4798299 DOI: 10.1371/journal.pone.0150974] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 02/22/2016] [Indexed: 11/23/2022] Open
Abstract
The sequence of cattle genome provided a valuable opportunity to systematically link genetic and metabolic traits of cattle. The objectives of this study were 1) to reconstruct genome-scale cattle-specific metabolic pathways based on the most recent and updated cattle genome build and 2) to identify duplicated metabolic genes in the cattle genome for better understanding of metabolic adaptations in cattle. A bioinformatic pipeline of an organism for amalgamating genomic annotations from multiple sources was updated. Using this, an amalgamated cattle genome database based on UMD_3.1, was created. The amalgamated cattle genome database is composed of a total of 33,292 genes: 19,123 consensus genes between NCBI and Ensembl databases, 8,410 and 5,493 genes only found in NCBI or Ensembl, respectively, and 266 genes from NCBI scaffolds. A metabolic reconstruction of the cattle genome and cattle pathway genome database (PGDB) was also developed using Pathway Tools, followed by an intensive manual curation. The manual curation filled or revised 68 pathway holes, deleted 36 metabolic pathways, and added 23 metabolic pathways. Consequently, the curated cattle PGDB contains 304 metabolic pathways, 2,460 reactions including 2,371 enzymatic reactions, and 4,012 enzymes. Furthermore, this study identified eight duplicated genes in 12 metabolic pathways in the cattle genome compared to human and mouse. Some of these duplicated genes are related with specific hormone biosynthesis and detoxifications. The updated genome-scale metabolic reconstruction is a useful tool for understanding biology and metabolic characteristics in cattle. There has been significant improvements in the quality of cattle genome annotations and the MetaCyc database. The duplicated metabolic genes in the cattle genome compared to human and mouse implies evolutionary changes in the cattle genome and provides a useful information for further research on understanding metabolic adaptations of cattle.
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Affiliation(s)
- Woonsu Kim
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon, Republic of Korea
| | - Hyesun Park
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon, Republic of Korea
| | - Seongwon Seo
- Department of Animal Biosystem Sciences, Chungnam National University, Daejeon, Republic of Korea
- * E-mail:
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17
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Chu WT, Zheng QC, Zhang HX. Insights into the phosphatase and the synthase activities of human bisphosphoglycerate mutase: a quantum mechanics/molecular mechanics simulation. Phys Chem Chem Phys 2014; 16:3946-54. [PMID: 24441588 DOI: 10.1039/c3cp53935k] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Bisphosphoglycerate mutase (BPGM) is a multi-activity enzyme. Its main function is to synthesize the 2,3-bisphosphoglycerate, the allosteric effector of hemoglobin. This enzyme can also catalyze the 2,3-bisphosphoglycerate to the 3-phosphoglycerate. In this study, the reaction mechanisms of both the phosphatase and the synthase activities of human bisphosphoglycerate mutase were theoretically calculated by using the quantum mechanics/molecular mechanics method based on the metadynamics and umbrella sampling simulations. The simulation results not only show the free energy curve of the phosphatase and the synthase reactions, but also reveal the important role of some residues in the active site. Additionally, the energy barriers of the two reactions indicate that the activity of the synthase in human bisphosphoglycerate mutase is much higher than that of the phosphatase. The estimated reaction barriers are consistent with the experimental data. Therefore, our work can give important information to understand the catalytic mechanism of the bisphosphoglycerate mutase family.
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Affiliation(s)
- Wen-Ting Chu
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China.
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18
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Benton MC, Lea RA, Macartney-Coxson D, Carless MA, Göring HH, Bellis C, Hanna M, Eccles D, Chambers GK, Curran JE, Harper JL, Blangero J, Griffiths LR. Mapping eQTLs in the Norfolk Island genetic isolate identifies candidate genes for CVD risk traits. Am J Hum Genet 2013; 93:1087-99. [PMID: 24314549 DOI: 10.1016/j.ajhg.2013.11.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 10/29/2013] [Accepted: 11/07/2013] [Indexed: 02/06/2023] Open
Abstract
Cardiovascular disease (CVD) affects millions of people worldwide and is influenced by numerous factors, including lifestyle and genetics. Expression quantitative trait loci (eQTLs) influence gene expression and are good candidates for CVD risk. Founder-effect pedigrees can provide additional power to map genes associated with disease risk. Therefore, we identified eQTLs in the genetic isolate of Norfolk Island (NI) and tested for associations between these and CVD risk factors. We measured genome-wide transcript levels of blood lymphocytes in 330 individuals and used pedigree-based heritability analysis to identify heritable transcripts. eQTLs were identified by genome-wide association testing of these transcripts. Testing for association between CVD risk factors (i.e., blood lipids, blood pressure, and body fat indices) and eQTLs revealed 1,712 heritable transcripts (p < 0.05) with heritability values ranging from 0.18 to 0.84. From these, we identified 200 cis-acting and 70 trans-acting eQTLs (p < 1.84 × 10(-7)) An eQTL-centric analysis of CVD risk traits revealed multiple associations, including 12 previously associated with CVD-related traits. Trait versus eQTL regression modeling identified four CVD risk candidates (NAAA, PAPSS1, NME1, and PRDX1), all of which have known biological roles in disease. In addition, we implicated several genes previously associated with CVD risk traits, including MTHFR and FN3KRP. We have successfully identified a panel of eQTLs in the NI pedigree and used this to implicate several genes in CVD risk. Future studies are required for further assessing the functional importance of these eQTLs and whether the findings here also relate to outbred populations.
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Affiliation(s)
- Miles C Benton
- Genomics Research Centre, Griffith Health Institute, Griffith University, Southport, QLD 4222, Australia
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AMP deaminase 3 deficiency enhanced 5'-AMP induction of hypometabolism. PLoS One 2013; 8:e75418. [PMID: 24066180 PMCID: PMC3774621 DOI: 10.1371/journal.pone.0075418] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Accepted: 08/12/2013] [Indexed: 11/30/2022] Open
Abstract
A hypometabolic state can be induced in mice by 5′-AMP administration. Previously we proposed that an underlying mechanism for this hypometabolism is linked to reduced erythrocyte oxygen transport function due to 5′-AMP uptake altering the cellular adenylate equilibrium. To test this hypothesis, we generated mice deficient in adenosine monophosphate deaminase 3 (AMPD3), the key catabolic enzyme for 5′-AMP in erythrocytes. Mice deficient in AMPD3 maintained AMPD activities in all tissues except erythrocytes. Developmentally and morphologically, the Ampd3−/− mice were indistinguishable from their wild type siblings. The levels of ATP, ADP but not 5′-AMP in erythrocytes of Ampd3−/− mice were significantly elevated. Fasting blood glucose levels of the Ampd3−/− mice were comparable to wild type siblings. In comparison to wild type mice, the Ampd3−/− mice displayed a deeper hypometabolism with a significantly delayed average arousal time in response to 5′-AMP administration. Together, these findings demonstrate a central role of AMPD3 in the regulation of 5′-AMP mediated hypometabolism and further implicate erythrocytes in this behavioral response.
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Mayer J, Beck J, Soller JT, Wemheuer W, Schütz E, Brenig B. Analysis of circulating DNA distribution in pregnant and nonpregnant dairy cows. Biol Reprod 2013; 88:29. [PMID: 23255334 DOI: 10.1095/biolreprod.112.103168] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Circulating nucleic acids (CNAs) are free-floating, cell-free DNA and RNA molecules in the circulation of healthy and diseased humans and animals. The aim of this study was to identify differences in CNA distribution in serum samples from multiparous pregnant (n = 24) and nonpregnant (n = 16) dairy cows at different days of gestation (Days 0, 20, and 40). A modified serial analysis of gene expression procedure was used to generate concatemerized short sequence tags from isolated serum DNA. A total of 6.1 × 10(6) tags were recovered from analyzed samples (n = 40). Significant differences between the pregnant and nonpregnant groups were detected in chromosomal regions, protein-coding sequences, and single genes (P < 0.05). Approximately 23% (1.4 × 10(6) tags) of the total sequence pool were present exclusively in the analyzed serum samples of pregnant cows. Of these tag sequences, seven originated from genomic regions and 13 from repetitive elements. Comparative BLAST analysis identified the repetitive tags as BovB (non-long terminal repeat retrotransposons/long interspersed nuclear elements), Art2A, BovA2, and Bov-tA2 (short interspersed nuclear elements). To our knowledge, this is the first study to comprehensively characterize the circulating, cell-free DNA profile in sera from pregnant and nonpregnant cows across early gestation.
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Affiliation(s)
- Jennifer Mayer
- Institute of Veterinary Medicine, University of Göttingen, Göttingen, Germany
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21
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Wooden JM, Finney GL, Rynes E, Maccoss MJ, Lambert AJ, Robledo RF, Peters LL, Gilligan DM. Comparative proteomics reveals deficiency of SLC9A1 (sodium/hydrogen exchanger NHE1) in β-adducin null red cells. Br J Haematol 2011; 154:492-501. [PMID: 21689084 DOI: 10.1111/j.1365-2141.2011.08612.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Spherocytosis is one of the most common inherited disorders, yet presents with a wide range of clinical severity. While several genes have been found mutated in patients with spherocytosis, the molecular basis for the variability in severity of haemolytic anaemia is not entirely understood. To identify candidate proteins involved in haemolytic anaemia pathophysiology, we utilized a label-free comparative proteomic approach to detect differences in red blood cells (RBCs) from normal and β-adducin (Add2) knock-out mice. We detected seven proteins that were decreased and 48 proteins that were increased in β-adducin null RBC ghosts. Since haemolytic anaemias are characterized by reticulocytosis, we compared reticulocyte-enriched samples from phenylhydrazine-treated mice with mature RBCs from untreated mice. Among the 48 proteins increased in Add2 knockout RBCs, only 11 were also increased in reticulocytes. Of the proteins decreased in Add2 knockout RBCs, α-adducin showed the greatest intensity difference, followed by SLC9A1, the sodium-hydrogen exchanger previously termed NHE1. We verified these mass spectrometry results by immunoblot. This is the first example of SLC9A1deficiency in haemolytic anaemia and suggests new insights into the mechanisms leading to fragile RBCs.
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Gilligan DM, Finney GL, Rynes E, Maccoss MJ, Lambert AJ, Peters LL, Robledo RF, Wooden JM. Comparative proteomics reveals deficiency of NHE-1 (Slc9a1) in RBCs from the beta-adducin knockout mouse model of hemolytic anemia. Blood Cells Mol Dis 2011; 47:85-94. [PMID: 21592827 DOI: 10.1016/j.bcmd.2011.03.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2011] [Accepted: 03/22/2011] [Indexed: 11/29/2022]
Abstract
Hemolytic anemia is one of the most common inherited disorders. To identify candidate proteins involved in hemolytic anemia pathophysiology, we utilized a label-free comparative proteomic approach to detect differences in RBCs from normal and beta-adducin (Add2) knock-out mice. We detected 7 proteins that were decreased and 48 proteins that were increased in the beta-adducin knock-out RBC ghost. Since hemolytic anemias are characterized by reticulocytosis, we compared reticulocyte-enriched samples from phenylhydrazine-treated mice with mature RBCs from untreated mice. Label-free analysis identified 47 proteins that were increased in the reticulocyte-enriched samples and 21 proteins that were decreased. Among the proteins increased in Add2 knockout RBCs, only 11 were also found increased in reticulocytes. Among the proteins decreased in Add2 knockout RBCs, beta- and alpha-adducin showed the greatest intensity difference, followed by NHE-1 (Slc9a1), the sodium-hydrogen exchanger. We verified these mass spectrometry results by immunoblot. This is the first example of a deficiency of NHE-1 in hemolytic anemia and suggests new insights into the mechanisms leading to fragile RBCs. Our use of label-free comparative proteomics to make this discovery demonstrates the usefulness of this approach as opposed to metabolic or chemical isotopic labeling of mice.
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Affiliation(s)
- Diana M Gilligan
- Department of Medicine, Upstate Medical University, Syracuse, NY, USA.
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23
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Gould PS, Gu M, Liao J, Ahmad S, Cudmore MJ, Ahmed A, Vatish M. Upregulation of Urotensin II Receptor in Preeclampsia Causes In Vitro Placental Release of Soluble Vascular Endothelial Growth Factor Receptor 1 in Hypoxia. Hypertension 2010; 56:172-8. [PMID: 20479331 DOI: 10.1161/hypertensionaha.110.152074] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Phillip S. Gould
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
| | - Mei Gu
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
| | - Jianqin Liao
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
| | - Shakil Ahmad
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
| | - Melissa J. Cudmore
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
| | - Asif Ahmed
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
| | - Manu Vatish
- From the Clinical Sciences Research Institute (P.S.G., M.G., J.L., M.V.), Warwick Medical School, University of Warwick, Coventry, United Kingdom; Albert Einstein College of Medicine (M.V.), Bronx, NY; Department of Reproductive and Vascular Biology (S.A., M.J.C., A.A.), Institute of Biomedical Research, Medical School, University of Birmingham, Edgbaston, Birmingham, West Midlands, United Kingdom; Birmingham Women’s Hospital (S.A., M.J.C., A.A.), Edgbaston, Birmingham, West Midlands, United
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24
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Daniels IS, Zhang J, O'Brien WG, Tao Z, Miki T, Zhao Z, Blackburn MR, Lee CC. A role of erythrocytes in adenosine monophosphate initiation of hypometabolism in mammals. J Biol Chem 2010; 285:20716-23. [PMID: 20430891 DOI: 10.1074/jbc.m109.090845] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Biochemical and mechanistic aspects into how various hypometabolic states are initiated in mammals are poorly understood. Here, we show how a state of hypometabolism is initiated by 5'-AMP uptake by erythrocytes. Wild type, ecto-5'-nucleotidase-deficient, and adenosine receptor-deficient mice undergo 5'-AMP-induced hypometabolism in a similar fashion. Injection of 5'-AMP leads to two distinct declining phases of oxygen consumption (VO(2)). The phase I response displays a rapid and steep decline in VO(2) that is independent of body temperature (T(b)) and ambient temperature (T(a)). It is followed by a phase II decline that is linked to T(b) and moderated by T(a). Altering the dosages of 5'-AMP from 0.25- to 2-fold does not change the phase I response. For mice, a T(a) of 15 degrees C is effective for induction of DH with the appropriate dose of 5'-AMP. Erythrocyte uptake of 5'-AMP leads to utilization of ATP to synthesize ADP. This is accompanied by increased glucose but decreased lactate levels, suggesting that glycolysis has slowed. Reduction in glycolysis is known to stimulate erythrocytes to increase intracellular levels of 2,3-bisphosphoglycerate, a potent allosteric inhibitor of hemoglobin's affinity for oxygen. Our studies showed that both 2,3-bisphosphoglycerate and deoxyhemoglobin levels rose following 5'-AMP administration and is in parallel with the phase I decline in VO(2). In summary, our investigations reveal that 5'-AMP mediated hypometabolism is probably triggered by reduced oxygen transport by erythrocytes initiated by uptake of 5'-AMP.
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Affiliation(s)
- Isadora Susan Daniels
- Department of Biochemistry and Molecular Biology, University of Texas Health Science Center, Houston, TX 77030, USA
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25
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Danshina PV, Geyer CB, Dai Q, Goulding EH, Willis WD, Kitto GB, McCarrey JR, Eddy E, O'Brien DA. Phosphoglycerate kinase 2 (PGK2) is essential for sperm function and male fertility in mice. Biol Reprod 2010; 82:136-45. [PMID: 19759366 PMCID: PMC2802118 DOI: 10.1095/biolreprod.109.079699] [Citation(s) in RCA: 176] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2009] [Revised: 08/03/2009] [Accepted: 09/03/2009] [Indexed: 11/01/2022] Open
Abstract
Phosphoglycerate kinase 2 (PGK2), an isozyme that catalyzes the first ATP-generating step in the glycolytic pathway, is encoded by an autosomal retrogene that is expressed only during spermatogenesis. It replaces the ubiquitously expressed phosphoglycerate kinase 1 (PGK1) isozyme following repression of Pgk1 transcription by meiotic sex chromosome inactivation during meiotic prophase and by postmeiotic sex chromatin during spermiogenesis. The targeted disruption of Pgk2 by homologous recombination eliminates PGK activity in sperm and severely impairs male fertility, but does not block spermatogenesis. Mating behavior, reproductive organ weights (testis, excurrent ducts, and seminal vesicles), testis histology, sperm counts, and sperm ultrastructure were indistinguishable between Pgk2(-/-) and wild-type mice. However, sperm motility and ATP levels were markedly reduced in males lacking PGK2. These defects in sperm function were slightly less severe than observed in males lacking glyceraldehyde-3-phosphate dehydrogenase, spermatogenic (GAPDHS), the isozyme that catalyzes the step preceding PGK2 in the sperm glycolytic pathway. Unlike Gapdhs(-/-) males, the Pgk2(-/-) males also sired occasional pups. Alternative pathways that bypass the PGK step of glycolysis exist. We determined that one of these bypass enzymes, acylphosphatase, is active in mouse sperm, perhaps contributing to phenotypic differences between mice lacking GAPDHS or PGK2. This study determined that PGK2 is not required for the completion of spermatogenesis, but is essential for sperm motility and male fertility. In addition to confirming the importance of the glycolytic pathway for sperm function, distinctive phenotypic characteristics of Pgk2(-/-) mice may provide further insights into the regulation of sperm metabolism.
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Affiliation(s)
- Polina V. Danshina
- Laboratories for Reproductive Biology, Department of Cell and Developmental Biology, and Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, North Carolina
| | - Christopher B. Geyer
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Qunsheng Dai
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Eugenia H. Goulding
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - William D. Willis
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - G. Barrie Kitto
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas
| | - John R. McCarrey
- Department of Biology, University of Texas at San Antonio, San Antonio, Texas
| | - E.M. Eddy
- Laboratory of Reproductive and Developmental Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina
| | - Deborah A. O'Brien
- Laboratories for Reproductive Biology, Department of Cell and Developmental Biology, and Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, North Carolina
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26
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Gu M, Pritlove DC, Boyd CAR, Vatish M. Placental expression of 2,3 bisphosphoglycerate mutase in IGF-II knock out mouse: correlation of circulating maternal 2,3 bisphosphoglycerate and fetal growth. Placenta 2009; 30:919-22. [PMID: 19733906 DOI: 10.1016/j.placenta.2009.08.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2009] [Revised: 08/14/2009] [Accepted: 08/18/2009] [Indexed: 11/16/2022]
Abstract
Bisphosphoglycerate mutase (BPGM) catalyses the formation of 2,3 bisphosphoglycerate (BPG) a ligand of haemoglobin. BPG facilitates liberation of oxygen from haemoglobin at low oxygen tension enabling efficient delivery of oxygen to tissues. We describe expression of BPGM in mouse labyrinthine trophoblasts, located at the maternal-placental interface. Expression is lower in placentae of igf2(+/-) knockout mice, a widely used model of growth restriction, compared to wild type placentae. Circulating maternal BPG increased throughout gestation but this increase was less in wt mothers carrying igf2(+/-) pups than in those carrying exclusively wt pups. This reduction was observed well before term and may contribute to the low birth weight of igf2(+/-) pups. Strikingly, we also measured reductions of fetal and placental weight in wt littermates of igf2(+/-) pups compared to pups developing in an exclusively wt environment. These data suggest that placental expression of BPGM can influence maternal BPG concentrations and supports a hypothesis under which BPG synthesized in the placenta may act on maternal haemoglobin to enhance delivery of oxygen to the developing fetus.
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Affiliation(s)
- M Gu
- Clinical Sciences Research Institute, University of Warwick Medical School, Clifford Bridge Road, Coventry, UK
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