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Liddicoat C, Edwards RA, Roach M, Robinson JM, Wallace KJ, Barnes AD, Brame J, Heintz-Buschart A, Cavagnaro TR, Dinsdale EA, Doane MP, Eisenhauer N, Mitchell G, Rai B, Ramesh SA, Breed MF. Bioenergetic mapping of 'healthy microbiomes' via compound processing potential imprinted in gut and soil metagenomes. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 940:173543. [PMID: 38821286 DOI: 10.1016/j.scitotenv.2024.173543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/24/2024] [Accepted: 05/24/2024] [Indexed: 06/02/2024]
Abstract
Despite mounting evidence of their importance in human health and ecosystem functioning, the definition and measurement of 'healthy microbiomes' remain unclear. More advanced knowledge exists on health associations for compounds used or produced by microbes. Environmental microbiome exposures (especially via soils) also help shape, and may supplement, the functional capacity of human microbiomes. Given the synchronous interaction between microbes, their feedstocks, and micro-environments, with functional genes facilitating chemical transformations, our objective was to examine microbiomes in terms of their capacity to process compounds relevant to human health. Here we integrate functional genomics and biochemistry frameworks to derive new quantitative measures of in silico potential for human gut and environmental soil metagenomes to process a panel of major compound classes (e.g., lipids, carbohydrates) and selected biomolecules (e.g., vitamins, short-chain fatty acids) linked to human health. Metagenome functional potential profile data were translated into a universal compound mapping 'landscape' based on bioenergetic van Krevelen mapping of function-level meta-compounds and corresponding functional relative abundances, reflecting imprinted genetic capacity of microbiomes to metabolize an array of different compounds. We show that measures of 'compound processing potential' associated with human health and disease (examining atherosclerotic cardiovascular disease, colorectal cancer, type 2 diabetes and anxious-depressive behavior case studies), and displayed seemingly predictable shifts along gradients of ecological disturbance in plant-soil ecosystems (three case studies). Ecosystem quality explained 60-92 % of variation in soil metagenome compound processing potential measures in a post-mining restoration case study dataset. With growing knowledge of the varying proficiency of environmental microbiota to process human health associated compounds, we might design environmental interventions or nature prescriptions to modulate our exposures, thereby advancing microbiota-oriented approaches to human health. Compound processing potential offers a simplified, integrative approach for applying metagenomics in ongoing efforts to understand and quantify the role of microbiota in environmental- and human-health.
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Affiliation(s)
- Craig Liddicoat
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia.
| | - Robert A Edwards
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Michael Roach
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Jake M Robinson
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Kiri Joy Wallace
- Environmental Research Institute, University of Waikato, Hamilton, Aotearoa, New Zealand
| | - Andrew D Barnes
- Environmental Research Institute, University of Waikato, Hamilton, Aotearoa, New Zealand
| | - Joel Brame
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Anna Heintz-Buschart
- Swammerdam Institute for Life Sciences, University of Amsterdam, 1098 XH Amsterdam, the Netherlands
| | - Timothy R Cavagnaro
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Elizabeth A Dinsdale
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Michael P Doane
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Nico Eisenhauer
- German Centre for Integrative Biodiversity Research (iDiv), 04103 Leipzig, Germany; Institute of Biology, Leipzig University, 04103 Leipzig, Germany
| | - Grace Mitchell
- Environmental Research Institute, University of Waikato, Hamilton, Aotearoa, New Zealand; Manaaki Whenua - Landcare Research, Hamilton, Aotearoa, New Zealand
| | - Bibishan Rai
- Environmental Research Institute, University of Waikato, Hamilton, Aotearoa, New Zealand
| | - Sunita A Ramesh
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
| | - Martin F Breed
- College of Science and Engineering, Flinders University, Bedford Park, South Australia, Australia
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2
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Sushentsev N, Hamm G, Flint L, Birtles D, Zakirov A, Richings J, Ling S, Tan JY, McLean MA, Ayyappan V, Horvat Menih I, Brodie C, Miller JL, Mills IG, Gnanapragasam VJ, Warren AY, Barry ST, Goodwin RJA, Barrett T, Gallagher FA. Metabolic imaging across scales reveals distinct prostate cancer phenotypes. Nat Commun 2024; 15:5980. [PMID: 39013948 PMCID: PMC11252279 DOI: 10.1038/s41467-024-50362-5] [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: 10/03/2023] [Accepted: 07/07/2024] [Indexed: 07/18/2024] Open
Abstract
Hyperpolarised magnetic resonance imaging (HP-13C-MRI) has shown promise as a clinical tool for detecting and characterising prostate cancer. Here we use a range of spatially resolved histological techniques to identify the biological mechanisms underpinning differential [1-13C]lactate labelling between benign and malignant prostate, as well as in tumours containing cribriform and non-cribriform Gleason pattern 4 disease. Here we show that elevated hyperpolarised [1-13C]lactate signal in prostate cancer compared to the benign prostate is primarily driven by increased tumour epithelial cell density and vascularity, rather than differences in epithelial lactate concentration between tumour and normal. We also demonstrate that some tumours of the cribriform subtype may lack [1-13C]lactate labelling, which is explained by lower epithelial lactate dehydrogenase expression, higher mitochondrial pyruvate carrier density, and increased lipid abundance compared to lactate-rich non-cribriform lesions. These findings highlight the potential of combining spatial metabolic imaging tools across scales to identify clinically significant metabolic phenotypes in prostate cancer.
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Affiliation(s)
- Nikita Sushentsev
- Department of Radiology, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK.
| | - Gregory Hamm
- Integrated BioAnalysis, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Lucy Flint
- Integrated BioAnalysis, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Daniel Birtles
- Integrated BioAnalysis, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Aleksandr Zakirov
- Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | - Jack Richings
- Predictive AI & Data, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Stephanie Ling
- Integrated BioAnalysis, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Jennifer Y Tan
- Predictive AI & Data, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Mary A McLean
- Department of Radiology, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Vinay Ayyappan
- Department of Radiology, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Ines Horvat Menih
- Department of Radiology, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Cara Brodie
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Jodi L Miller
- Cancer Research UK Cambridge Institute, University of Cambridge, Cambridge, UK
| | - Ian G Mills
- Patrick G Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, UK
- Nuffield Department of Surgical Sciences, University of Oxford, John Radcliffe Hospital, Oxford, UK
| | - Vincent J Gnanapragasam
- Department of Urology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
- Division of Urology, Department of Surgery, University of Cambridge, Cambridge, UK
- Cambridge Urology Translational Research and Clinical Trials Office, Cambridge Biomedical Campus, Addenbrooke's Hospital, Cambridge, UK
| | - Anne Y Warren
- Department of Pathology, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Simon T Barry
- Bioscience, Early Oncology, AstraZeneca, Cambridge, UK
| | - Richard J A Goodwin
- Integrated BioAnalysis, Clinical Pharmacology & Safety Sciences, R&D, AstraZeneca, Cambridge, UK
| | - Tristan Barrett
- Department of Radiology, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - Ferdia A Gallagher
- Department of Radiology, University of Cambridge and Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
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3
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Roosta S, Ghasemi F, Mokhayeri Y, Choobkar S, Nikbakht MR, Falahi E. Effects of Satureja Khuzestanica supplementation on glycemic indices and lipid profile in type 2 diabetes patients: a randomized controlled clinical-trial. BMC Complement Med Ther 2024; 24:201. [PMID: 38778308 PMCID: PMC11110332 DOI: 10.1186/s12906-024-04384-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 01/30/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Several studies showed the hypoglycemic and hypolipidemic effects of Satureja Khuzestanica (SK) in animal models. This study aimed to determine the effect of SK supplementation on glycemic and lipid outcomes of patients with type 2 diabetes mellitus (T2DM). METHODS The study was designed as a double-blind, placebo-controlled, randomized clinical trial using block randomization. Seventy-eight T2DM patients were randomly assigned to intervention (n = 39) or placebo (n = 39) groups. They received SK or placebo in 500 mg capsules daily for 12 weeks. Anthropometric, blood pressure, liver enzymes, glycemic, and lipid outcomes were measured before and after the intervention. RESULTS At baseline, there were no significant differences in age, sex, or glycated hemoglobin (HbA1c) levels between the groups. SK supplementation led to a significant decrease in FBS (-12.6 ± 20.7 mg/dl in the intervention group versus 3.5 ± 31.9 mg/dl; p = 0.007), HbA1c (-0.28 ± 0.45 in the intervention group versus 0.11 ± 0.54% in the placebo group; p = < 0.001), insulin (-1.65 ± 6.18 in the intervention group versus 2.09 ± 5.90 mIU/L in the placebo group; p = 0.03), total cholesterol (-14.6 ± 21.1 mg/dl in the intervention group versus 8.2 ± 30.9 mg/dl in the placebo group; p < 0.001), LDL-cholesterol (-4.6 ± 15.2 mg/dl in the intervention group versus 5.8 ± 14.6 mg/dl in placebo group; p < 0.001) levels, and significant increase in HDL-cholesterol (3.9 ± 4.9 mg/dl in the intervention group versus 0.9 ± 5.2 mg/dl in placebo group; p = 0.005). CONCLUSION Based on the study results, SK supplementation may improve glycemic indices and lipid profile of patients with T2DM. Our findings may provide novel complementary treatments without adverse effects for diabetes complications. These results need to be further confirmed in clinical trials. REGISTRATION This trial has been registered in the Iranian Registry of Clinical Trials (IRCT ID: IRCT20190715044214N1, registration date: 21/02/2021).
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Affiliation(s)
- Sajjad Roosta
- Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Fatemeh Ghasemi
- Student Research Committee, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Yaser Mokhayeri
- Cardiovascular Research Center, Shahid Rahimi Hospital, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Saeed Choobkar
- School of Medicine, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mohammad Reza Nikbakht
- Department of Physiology and Pharmacology, School of Medicine, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Ebrahim Falahi
- Nutritional Health Research Center, Lorestan University of Medical Sciences, P.O. Box: 6819789741, Khorramabad, Iran.
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Bi HE, Zhang J, Yao Y, Wang S, Yao J, Shao Z, Jiang Q. Expression and functional significance of phosphoenolpyruvate carboxykinase 1 in uveal melanoma. Cell Death Discov 2024; 10:196. [PMID: 38670942 PMCID: PMC11053060 DOI: 10.1038/s41420-024-01963-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
Uveal melanoma (UVM), an uncommon yet potentially life-threatening ocular cancer, arises from melanocytes in the uveal tract of the eye. The exploration of novel oncotargets for UVM is of paramount importance. In this study, we show that PCK1 (phosphoenolpyruvate carboxykinase 1) expression is upregulated in various UVM tissues as well as in primary UVM cells and immortalized lines. Furthermore, bioinformatics studies reveal that PCK1 overexpression in UVM correlates with advanced disease stages and poor patient survival. Genetic silencing (utilizing viral shRNA) or knockout (via CRISPR/Cas9) of PCK1 significantly curtailed cell viability, proliferation, cell cycle progression, and motility, while provoking apoptosis in primary and immortalized UVM cells. Conversely, ectopic overexpression of PCK1, achieved through a viral construct, bolstered UVM cell proliferation and migration. Gαi3 expression and Akt phosphorylation were reduced following PCK1 silencing or knockout, but increased after PCK1 overexpression in UVM cells. Restoring Akt phosphorylation through a constitutively active mutant Akt1 (S473D) ameliorated the growth inhibition, migration suppression, and apoptosis induced by PCK1 silencing in UVM cells. Additionally, ectopic expression of Gαi3 restored Akt activation and counteracted the anti-UVM cell effects by PCK1 silencing. In vivo, the growth of subcutaneous xenografts of primary human UVM cells was significantly inhibited following intratumoral injection of adeno-associated virus (aav) expressing PCK1 shRNA. PCK1 depletion, Gαi3 downregulation, Akt inhibition, proliferation arrest, and apoptosis were detected in PCK1-silenced UVM xenografts. Collectively, our findings demonstrate that PCK1 promotes UVM cell growth possibly by modulating the Gαi3-Akt signaling pathway.
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Affiliation(s)
- Hui-E Bi
- The Affiliated Eye Hospital, The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
- Department of Ophthalmology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China
| | - Jie Zhang
- Obstetrics and Gynecology Department, The Affiliated Zhangjiagang Hospital of Soochow University, Suzhou, China
| | - Yujia Yao
- The Affiliated Eye Hospital, The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Suyu Wang
- The Affiliated Eye Hospital, The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China
| | - Jin Yao
- The Affiliated Eye Hospital, The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
| | - Zhijiang Shao
- Department of Ophthalmology, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, China.
| | - Qin Jiang
- The Affiliated Eye Hospital, The Fourth School of Clinical Medicine, Nanjing Medical University, Nanjing, China.
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5
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Gao HH, Zhao S, Wang RJ, Qin DY, Chen P, Zhang AS, Zhuang QY, Zhai YF, Zhou XH. Gut bacterium promotes host fitness in special ecological niche by affecting sugar metabolism in Drosophila suzukii. INSECT SCIENCE 2023; 30:1713-1733. [PMID: 36810869 DOI: 10.1111/1744-7917.13189] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2022] [Revised: 02/09/2023] [Accepted: 02/13/2023] [Indexed: 06/18/2023]
Abstract
As an important fruit pest of global significance, Drosophila suzukii occupies a special ecological niche, with the characteristics of high sugar and low protein contents. This niche differs from those occupied by other fruit-damaging Drosophila species. Gut bacteria substantially impact the physiology and ecology of insects. However, the contribution of gut microbes to the fitness of D. suzukii in their special ecological niche remains unclear. In this study, the effect of Klebsiella oxytoca on the development of D. suzukii was examined at physiological and molecular levels. The results showed that, after the removal of gut microbiota, the survival rate and longevity of axenic D. suzukii decreased significantly. Reintroduction of K. oxytoca to the midgut of D. suzukii advanced the development level of D. suzukii. The differentially expressed genes and metabolites between axenic and K. oxytoca-reintroduced D. suzukii were enriched in the pathways of carbohydrate metabolism. This advancement was achieved through an increased glycolysis rate and the regulation of the transcript level of key genes in the glycolysis/gluconeogenesis pathway. Klebsiella oxytoca is likely to play an important role in increasing host fitness in their high-sugar ecological niche by stimulating the glycolysis/gluconeogenesis pathway. As a protein source, bacteria can also provide direct nutrition for D. suzukii, which depends on the quantity or biomass of K. oxytoca. This result may provide a new target for controlling D. suzukii by inhibiting sugar metabolism through eliminating the effect of K. oxytoca and thus disrupting the balance of gut microbial communities.
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Affiliation(s)
- Huan-Huan Gao
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
- Shandong Academy of Grape, Jinan, China
| | - Shan Zhao
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Rui-Juan Wang
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Dong-Yun Qin
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Peng Chen
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - An-Sheng Zhang
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Qian-Ying Zhuang
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yi-Fan Zhai
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xian-Hong Zhou
- Institute of Plant Protection, Shandong Academy of Agricultural Sciences, Jinan, China
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Ferreira B, Heredia A, Serpa J. An integrative view on glucagon function and putative role in the progression of pancreatic neuroendocrine tumours (pNETs) and hepatocellular carcinomas (HCC). Mol Cell Endocrinol 2023; 578:112063. [PMID: 37678603 DOI: 10.1016/j.mce.2023.112063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/16/2023] [Accepted: 09/02/2023] [Indexed: 09/09/2023]
Abstract
Cancer metabolism research area evolved greatly, however, is still unknown the impact of systemic metabolism control and diet on cancer. It makes sense that systemic regulators of metabolism can act directly on cancer cells and activate signalling, prompting metabolic remodelling needed to sustain cancer cell survival, tumour growth and disease progression. In the present review, we describe the main glucagon functions in the control of glycaemia and of metabolic pathways overall. Furthermore, an integrative view on how glucagon and related signalling pathways can contribute for pancreatic neuroendocrine tumours (pNETs) and hepatocellular carcinomas (HCC) progression, since pancreas and liver are the major organs exposed to higher levels of glucagon, pancreas as a producer and liver as a scavenger. The main objective is to bring to discussion some glucagon-dependent mechanisms by presenting an integrative view on microenvironmental and systemic aspects in pNETs and HCC biology.
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Affiliation(s)
- Bárbara Ferreira
- iNOVA4Health, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Campo Dos Mártires da Pátria, 130, 1169-056, Lisboa, Portugal; Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Rua Prof Lima Basto, 1099-023, Lisboa, Portugal
| | - Adrián Heredia
- iNOVA4Health, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Campo Dos Mártires da Pátria, 130, 1169-056, Lisboa, Portugal; Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Rua Prof Lima Basto, 1099-023, Lisboa, Portugal; Faculdade de Medicina da Universidade de Lisboa, Av. Prof. Egas Moniz MB, 1649-028, Lisboa, Portugal
| | - Jacinta Serpa
- iNOVA4Health, NOVA Medical School, Faculdade de Ciências Médicas, NMS, FCM, Universidade NOVA de Lisboa, Campo Dos Mártires da Pátria, 130, 1169-056, Lisboa, Portugal; Instituto Português de Oncologia de Lisboa Francisco Gentil (IPOLFG), Rua Prof Lima Basto, 1099-023, Lisboa, Portugal.
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7
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Namiki T, Takemoto M, Hayashi A, Yamagata H, Ishikawa T, Yokote K, Li SY, Kubota M, Zhang BS, Yoshida Y, Matsutani T, Mine S, Machida T, Kobayashi Y, Terada J, Naito A, Tatsumi K, Takizawa H, Nakamura R, Kuroda H, Iwadate Y, Hiwasa T. Serum anti-PCK1 antibody levels are a prognostic factor for patients with diabetes mellitus. BMC Endocr Disord 2023; 23:239. [PMID: 37904164 PMCID: PMC10614393 DOI: 10.1186/s12902-023-01491-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Accepted: 10/16/2023] [Indexed: 11/01/2023] Open
Abstract
BACKGROUND Autoantibodies develop in autoimmune diseases, cancer, diabetes mellitus (DM), and atherosclerosis-related diseases. However, autoantibody biomarkers have not been successfully examined for diagnosis and therapy. METHODS Serological identification of antigens through recombinant cDNA expression cloning (SEREX) was used for primary screening of antigens. The cDNA product was expressed in bacteria and purified. Amplified luminescent proximity homogeneous assay-linked immunosorbent assay (AlphaLISA) was used to evaluate antibody levels in serum samples. RESULTS Phosphoenolpyruvate carboxykinase 1 (PCK1) was recognized as an antigen by serum IgG antibodies in the sera of patients with atherosclerosis. AlphaLISA showed significantly higher serum antibody levels against recombinant PCK1 protein in patients with DM and cardiovascular disease than in healthy donors, but not in those with acute ischemic stroke, transient ischemic attack, or obstructive sleep apnea syndrome. The area under the receiver operating characteristic curve for anti-PCK1 antibodies was 0.7024 for DM. The serum anti-PCK1 antibody levels were associated with age, platelet count, and blood pressure. Anti-PCK1-antibody-positive patients showed significantly lower overall survival than the negative patients. CONCLUSIONS Serum anti-PCK1 antibody levels were found to be associated with DM. The anti-PCK1 antibody marker is useful for predicting the overall survival of patients with DM.
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Grants
- Grant Numbers 20K17953, 19K09451, 17K19810, 19K08596, 20K07810, 16K10520, 20K07810, 21K07395 and 15K10117. This work was supported, in part, by research grants from the Japan Science and Technology Agency (JST) and JSPS KAKENHI
- Grant Numbers 20K17953, 19K09451, 17K19810, 19K08596, 20K07810, 16K10520, 20K07810, 21K07395 and 15K10117. This work was supported, in part, by research grants from the Japan Science and Technology Agency (JST) and JSPS KAKENHI
- Grant Numbers 20K17953, 19K09451, 17K19810, 19K08596, 20K07810, 16K10520, 20K07810, 21K07395 and 15K10117. This work was supported, in part, by research grants from the Japan Science and Technology Agency (JST) and JSPS KAKENHI
- Grant Numbers 20K17953, 19K09451, 17K19810, 19K08596, 20K07810, 16K10520, 20K07810, 21K07395 and 15K10117. This work was supported, in part, by research grants from the Japan Science and Technology Agency (JST) and JSPS KAKENHI
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Affiliation(s)
- Toshiki Namiki
- Department of Diabetes, Metabolism and Endocrinology, School of Medicine, International University of Health and Welfare, Narita Hospital, 852 Hatakeda, Narita City, Chiba, 286-8520, Japan
| | - Minoru Takemoto
- Department of Diabetes, Metabolism and Endocrinology, School of Medicine, International University of Health and Welfare, Narita Hospital, 852 Hatakeda, Narita City, Chiba, 286-8520, Japan.
| | - Aiko Hayashi
- Department of Endocrinology, Hematology and Gerontology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Hiroki Yamagata
- Department of Diabetes, Metabolism and Endocrinology, School of Medicine, International University of Health and Welfare, Narita Hospital, 852 Hatakeda, Narita City, Chiba, 286-8520, Japan
| | - Takahiro Ishikawa
- Department of Endocrinology, Hematology and Gerontology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Koutaro Yokote
- Department of Endocrinology, Hematology and Gerontology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Shu-Yang Li
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Masaaki Kubota
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Bo-Shi Zhang
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Yoichi Yoshida
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Tomoo Matsutani
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Seiichiro Mine
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
- Department of Neurological Surgery, Chiba Prefectural Sawara Hospital, Chiba, 287-0003, Japan
- Department of Neurological Surgery, Chiba Cerebral and Cardiovascular Center, Chiba, 290-0512, Japan
| | - Toshio Machida
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
- Department of Neurological Surgery, Chiba Cerebral and Cardiovascular Center, Chiba, 290-0512, Japan
- Department of Neurosurgery, Eastern Chiba Medical Center, Chiba, 283-8686, Japan
| | - Yoshio Kobayashi
- Department of Cardiovascular Medicine, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Jiro Terada
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Akira Naito
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Koichiro Tatsumi
- Department of Respirology, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Hirotaka Takizawa
- Port Square Kashiwado Clinic, Kashiwado Memorial Foundation, Chiba, 260-0025, Japan
| | - Rika Nakamura
- Medical Project Division, Research Development Center, Fujikura Kasei Co, Saitama, 340-0203, Japan
| | - Hideyuki Kuroda
- Medical Project Division, Research Development Center, Fujikura Kasei Co, Saitama, 340-0203, Japan
| | - Yasuo Iwadate
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
| | - Takaki Hiwasa
- Department of Neurological Surgery, Graduate School of Medicine, Chiba University, Chiba, 260-8670, Japan
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Guadagnin AR, Fehlberg LK, Thomas B, Sugimoto Y, Shinzato I, Cardoso FC. Feeding rumen-protected lysine prepartum alters placental metabolism at a transcriptional level. J Dairy Sci 2023; 106:6567-6576. [PMID: 37532623 DOI: 10.3168/jds.2022-22390] [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: 06/09/2022] [Accepted: 02/24/2023] [Indexed: 08/04/2023]
Abstract
Rumen-protected Lys (RPL) fed to Holstein cows prepartum resulted in a greater intake and improved health of their calves during the first 6 wk of life. However, whether increased supply of Lys in late gestation can influence placental tissue and, if so, which pathways are affected remain to be investigated. Therefore, we hypothesize that feeding RPL during late gestation could modulate placental metabolism, allowing for improved passage of nutrients to the fetus and thus influencing the offspring development. Therefore, we aimed to determine the effects of feeding RPL (AjiPro-L Generation 3, Ajinomoto Health and Nutrition North America) prepartum (0.54% DM of TMR) on mRNA gene expression profiles of placental samples of Holstein cows. Seventy multiparous Holstein cows were randomly assigned to 1 of 2 dietary treatments, consisting of TMR top-dressed with RPL (PRE-L) or without (control, CON), fed from 27 ± 5 d prepartum until calving. After natural delivery (6.87 ± 3.32 h), placentas were rinsed with physiological saline (0.9% sodium chloride solution) to clean any dirtiness from the environment and weighed. Then, 3 placentomes were collected, one from each placental region (cranial, central, and caudal), combined and flash-frozen in liquid nitrogen to evaluate the expression of transcripts and proteins related to protein metabolism and inflammation. Placental weights did not differ from cows in PRE-L (15.5 ± 4.03 kg) and cows in CON (14.5 ± 4.03 kg). Feeding RPL prepartum downregulated the expression of NOS3 (nitric oxide synthase 3), involved in vasodilation processes, and SOD1, which encodes the enzyme superoxide dismutase, involved in oxidative stress processes. Additionally, feeding RPL prepartum upregulated the expression of transcripts involved in energy metabolism (SLC2A3, glucose transporter 3; and PCK1, phosphoenolpyruvate carboxykinase 1), placental metabolism and cell proliferation (FGF2, fibroblast growth factor 2; FGF2R, fibroblast growth factor 2 receptor; and PGF, placental growth factor), Met metabolism (MAT2A, methionine adenosyltransferase 2-α), and tended to upregulate IGF2R (insulin-like growth factor 2 receptor). Placental FGF2 and LRP1 (low-density lipoprotein receptor-related protein 1) protein abundance were greater for cows that received RPL prepartum than cows in CON. In conclusion, feeding RPL to prepartum dairy cows altered uteroplacental expression of genes and proteins involved in cell proliferation, and in metabolism and transport of glucose. Such changes are illustrated by increased expression of SLC2A3 and PCK1 and increased protein abundance of FGF2 and LRP1 in uteroplacental tissue of cows consuming RPL.
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Affiliation(s)
- A R Guadagnin
- Department of Animal Sciences, University of Illinois Urbana-Champaign, IL 61801
| | - L K Fehlberg
- Department of Animal Sciences, University of Illinois Urbana-Champaign, IL 61801
| | - B Thomas
- Department of Animal Sciences, University of Illinois Urbana-Champaign, IL 61801
| | | | | | - F C Cardoso
- Department of Animal Sciences, University of Illinois Urbana-Champaign, IL 61801.
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9
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Martins da Silva R, de Oliveira Daumas Filho CR, Calixto C, Nascimento da Silva J, Lopes C, da Silva Vaz I, Logullo C. PEPCK and glucose metabolism homeostasis in arthropods. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2023; 160:103986. [PMID: 37454751 DOI: 10.1016/j.ibmb.2023.103986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 07/03/2023] [Accepted: 07/05/2023] [Indexed: 07/18/2023]
Abstract
The fat body is responsible for a variety of functions related to energy metabolism in arthropods, by controlling the processes of de novo glucose production (gluconeogenesis) and glycogen metabolism. The rate-limiting factor of gluconeogenesis is the enzyme phosphoenolpyruvate carboxykinase (PEPCK), generally considered to be the first committed step in this pathway. Although the study of PEPCK and gluconeogenesis has been for decades restricted to mammalian models, especially focusing on muscle and liver tissue, current research has demonstrated particularities about the regulation of this enzyme in arthropods, and described new functions. This review will focus on arthropod PEPCK, discuss different aspects to PEPCK regulation and function, its general role in the regulation of gluconeogenesis and other pathways. The text also presents our views on potentially important new directions for research involving this enzyme in a variety of metabolic adaptations (e.g. diapause), discussing enzyme isoforms, roles during arthropod embryogenesis, as well as involvement in vector-pathogen interactions, contributing to a better understanding of insect vectors of diseases and their control.
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Affiliation(s)
- Renato Martins da Silva
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil
| | - Carlos Renato de Oliveira Daumas Filho
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil
| | - Christiano Calixto
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil
| | - Jhenifer Nascimento da Silva
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil
| | - Cintia Lopes
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil
| | - Itabajara da Silva Vaz
- Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil; Centro de Biotecnologia and Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, RS, Brazil
| | - Carlos Logullo
- Instituto de Bioquímica Médica Leopoldo de Meis, Universidade Federal do Rio de Janeiro, RJ, Brazil; Instituto Nacional de Ciência e Tecnologia em Entomologia Molecular - INCT, Rio de Janeiro, RJ, Brazil.
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10
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Kumar A, Schwab M, Laborit Labrada B, Silveira MAD, Goudreault M, Fournier É, Bellmann K, Beauchemin N, Gingras AC, Bilodeau S, Laplante M, Marette A. SHP-1 phosphatase acts as a coactivator of PCK1 transcription to control gluconeogenesis. J Biol Chem 2023; 299:105164. [PMID: 37595871 PMCID: PMC10504565 DOI: 10.1016/j.jbc.2023.105164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 07/25/2023] [Accepted: 07/28/2023] [Indexed: 08/20/2023] Open
Abstract
We previously reported that the protein-tyrosine phosphatase SHP-1 (PTPN6) negatively regulates insulin signaling, but its impact on hepatic glucose metabolism and systemic glucose control remains poorly understood. Here, we use co-immunoprecipitation assays, chromatin immunoprecipitation sequencing, in silico methods, and gluconeogenesis assay, and found a new mechanism whereby SHP-1 acts as a coactivator for transcription of the phosphoenolpyruvate carboxykinase 1 (PCK1) gene to increase liver gluconeogenesis. SHP-1 is recruited to the regulatory regions of the PCK1 gene and interacts with RNA polymerase II. The recruitment of SHP-1 to chromatin is dependent on its association with the transcription factor signal transducer and activator of transcription 5 (STAT5). Loss of SHP-1 as well as STAT5 decrease RNA polymerase II recruitment to the PCK1 promoter and consequently PCK1 mRNA levels leading to blunted gluconeogenesis. This work highlights a novel nuclear role of SHP-1 as a key transcriptional regulator of hepatic gluconeogenesis adding a new mechanism to the repertoire of SHP-1 functions in metabolic control.
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Affiliation(s)
- Amit Kumar
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Michael Schwab
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Beisy Laborit Labrada
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Maruhen Amir Datsch Silveira
- Centre de Recherche du CHU de Québec - Université Laval, Axe Oncologie, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada; Département de biologie moléculaire, biochimie médicale et pathologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada
| | - Marilyn Goudreault
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Quebec, Canada; Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Sinai Health System, Toronto, Ontario, Canada
| | - Éric Fournier
- Centre de Recherche du CHU de Québec - Université Laval, Axe Oncologie, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada; Département de biologie moléculaire, biochimie médicale et pathologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada; Centre de recherche en données massives de l'Université Laval, Québec, Quebec, Canada
| | - Kerstin Bellmann
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada
| | - Nicole Beauchemin
- Department of Oncology, Medicine and Biochemistry, Rosalind and Morris Goodman Cancer Institute, McGill University, Montreal, Quebec, Canada
| | - Anne-Claude Gingras
- Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Sinai Health System, Toronto, Ontario, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Steve Bilodeau
- Centre de Recherche du CHU de Québec - Université Laval, Axe Oncologie, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada; Département de biologie moléculaire, biochimie médicale et pathologie, Faculté de Médecine, Université Laval, Québec, Quebec, Canada; Centre de recherche en données massives de l'Université Laval, Québec, Quebec, Canada
| | - Mathieu Laplante
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada; Centre de Recherche sur le Cancer de l'Université Laval, Québec, Quebec, Canada
| | - André Marette
- Faculté de Médecine, Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec (CRIUCPQ), Université Laval, Québec, Quebec, Canada; Institute of Nutrition and Functional Foods, Laval University, Québec, Quebec, Canada.
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11
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McLeod MJ, Holyoak T. Biochemical, structural, and kinetic characterization of PP i -dependent phosphoenolpyruvate carboxykinase from Propionibacterium freudenreichii. Proteins 2023; 91:1261-1275. [PMID: 37226637 DOI: 10.1002/prot.26513] [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: 10/03/2022] [Revised: 04/27/2023] [Accepted: 05/04/2023] [Indexed: 05/26/2023]
Abstract
Phosphoenolpyruvate carboxykinases (PEPCK) are a well-studied family of enzymes responsible for the regulation of TCA cycle flux, where they catalyze the interconversion of oxaloacetic acid (OAA) and phosphoenolpyruvate (PEP) using a phosphoryl donor/acceptor. These enzymes have typically been divided into two nucleotide-dependent classes, those that use ATP and those that use GTP. In the 1960's and early 1970's, a group of papers detailed biochemical properties of an enzyme named phosphoenolpyruvate carboxytransphosphorylase (later identified as a third PEPCK) from Propionibacterium freudenreichii (PPi -PfPEPCK), which instead of using a nucleotide, utilized PPi to catalyze the same interconversion of OAA and PEP. The presented work expands upon the initial biochemical experiments for PPi -PfPEPCK and interprets these data considering both the current understanding of nucleotide-dependent PEPCKs and is supplemented with a new crystal structure of PPi -PfPEPCK in complex with malate at a putative allosteric site. Most interesting, the data are consistent with PPi -PfPEPCK being a Fe2+ activated enzyme in contrast with the Mn2+ activated nucleotide-dependent enzymes which in part results in some unique kinetic properties for the enzyme when compared to the more widely distributed GTP- and ATP-dependent enzymes.
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Affiliation(s)
- Matthew J McLeod
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
- Department of Physics, Cornell University, Ithaca, New York, USA
| | - Todd Holyoak
- Department of Biology, University of Waterloo, Waterloo, Ontario, Canada
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12
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Elshobaky A, Lillo C, Hodén KP, Kataya ARA. Protein-Protein Interactions and Quantitative Phosphoproteomic Analysis Reveal Potential Mitochondrial Substrates of Protein Phosphatase 2A-B'ζ Holoenzyme. PLANTS (BASEL, SWITZERLAND) 2023; 12:2586. [PMID: 37447147 DOI: 10.3390/plants12132586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/03/2023] [Accepted: 07/06/2023] [Indexed: 07/15/2023]
Abstract
Protein phosphatase 2A (PP2A) is a heterotrimeric conserved serine/threonine phosphatase complex that includes catalytic, scaffolding, and regulatory subunits. The 3 A subunits, 17 B subunits, and 5 C subunits that are encoded by the Arabidopsis genome allow 255 possible PP2A holoenzyme combinations. The regulatory subunits are crucial for substrate specificity and PP2A complex localization and are classified into the B, B', and B" non-related families in land plants. In Arabidopsis, the close homologs B'η, B'θ, B'γ, and B'ζ are further classified into a subfamily of B' called B'η. Previous studies have suggested that mitochondrial targeted PP2A subunits (B'ζ) play a role in energy metabolism and plant innate immunity. Potentially, the PP2A-B'ζ holoenzyme is involved in the regulation of the mitochondrial succinate/fumarate translocator, and it may affect the enzymes involved in energy metabolism. To investigate this hypothesis, the interactions between PP2A-B'ζ and the enzymes involved in the mitochondrial energy flow were investigated using bimolecular fluorescence complementation in tobacco and onion cells. Interactions were confirmed between the B'ζ subunit and the Krebs cycle proteins succinate/fumarate translocator (mSFC1), malate dehydrogenase (mMDH2), and aconitase (ACO3). Additional putative interacting candidates were deduced by comparing the enriched phosphoproteomes of wild type and B'ζ mutants: the mitochondrial regulator Arabidopsis pentatricopeptide repeat 6 (PPR6) and the two metabolic enzymes phosphoenolpyruvate carboxylase (PPC3) and phosphoenolpyruvate carboxykinase (PCK1). Overall, this study identifies potential PP2A substrates and highlights the role of PP2A in regulating energy metabolism in mitochondria.
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Affiliation(s)
- Ahmed Elshobaky
- Centre for Organelle Research, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
- Botany Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | - Cathrine Lillo
- Centre for Organelle Research, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
| | - Kristian Persson Hodén
- Department of Plant Biology, Uppsala BioCenter, Linnéan Center for Plant Biology, Swedish University of Agricultural Sciences, P.O. Box 7080, 75007 Uppsala, Sweden
| | - Amr R A Kataya
- Centre for Organelle Research, Faculty of Science and Technology, University of Stavanger, N-4036 Stavanger, Norway
- Department of Biological Sciences, University of Calgary, Calgary, AB T2N 1N4, Canada
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13
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Cheung AHK, Wong KY, Liu X, Ji F, Hui CHL, Zhang Y, Kwan JSH, Chen B, Dong Y, Lung RWM, Yu J, Lo KW, Wong CC, Kang W, To KF. MLK4 promotes glucose metabolism in lung adenocarcinoma through CREB-mediated activation of phosphoenolpyruvate carboxykinase and is regulated by KLF5. Oncogenesis 2023; 12:35. [PMID: 37407566 DOI: 10.1038/s41389-023-00478-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 05/15/2023] [Accepted: 06/15/2023] [Indexed: 07/07/2023] Open
Abstract
MLK4, a member of the mitogen-activated protein kinase kinase kinase (MAP3K) family, has been implicated in cancer progression. However, its role in lung adenocarcinoma has not been characterized. Here, we showed that MLK4 was overexpressed in a significant subset of lung adenocarcinoma, associated with a worse prognosis, and exerted an oncogenic function in vitro and in vivo. Bioinformatics analyses of clinical datasets identified phosphoenolpyruvate carboxykinase 1 (PCK1) as a novel target of MLK4. We validated that MLK4 regulated PCK1 expression at transcriptional level, by phosphorylating the transcription factor CREB, which in turn mediated PCK1 expression. We further demonstrated that PCK1 is an oncogenic factor in lung adenocarcinoma. Given the importance of PCK1 in the regulation of cellular metabolism, we next deciphered the metabolic effects of MLK4. Metabolic and mass spectrometry analyses showed that MLK4 knockdown led to significant reduction of glycolysis and decreased levels of glycolytic pathway metabolites including phosphoenolpyruvate and lactate. Finally, the promoter analysis of MLK4 unravelled a binding site of transcription factor KLF5, which in turn, positively regulated MLK4 expression in lung adenocarcinoma. In summary, we have revealed a KLF5-MLK4-PCK1 signalling pathway involved in lung tumorigenesis and established an unusual link between MAP3K signalling and cancer metabolism.
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Affiliation(s)
- Alvin Ho-Kwan Cheung
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Kit-Yee Wong
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Xiaoli Liu
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Fenfen Ji
- Institute of Digestive Disease, Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Chris Ho-Lam Hui
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Yihan Zhang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Johnny Sheung-Him Kwan
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Bonan Chen
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Yujuan Dong
- Institute of Digestive Disease, Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Raymond Wai-Ming Lung
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Jun Yu
- Institute of Digestive Disease, Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kwok Wai Lo
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Chi Chun Wong
- Institute of Digestive Disease, Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Wei Kang
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong.
| | - Ka-Fai To
- Department of Anatomical and Cellular Pathology, State Key Laboratory of Translational Oncology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong.
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14
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Yuan H, Xie M, Hu N, Zheng Y, Hou C, Tan B, Shi L, Zhang S. Growth, immunity and transcriptome response to different stocking densities in Litopenaeus vannamei. FISH & SHELLFISH IMMUNOLOGY 2023; 139:108924. [PMID: 37406891 DOI: 10.1016/j.fsi.2023.108924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 06/11/2023] [Accepted: 07/02/2023] [Indexed: 07/07/2023]
Abstract
The effects of different stocking densities on Litopenaeus vannamei were investigated from the aspects of growth performance, immune response and transcriptome in this experiment. L. vannamei (initial body weight: 0.30 ± 0.02 g) were reared for 8 weeks at three stocking densities of 100 (LSD), 200 (MSD) and 300 (HSD) shrimp/m³, respectively. The results showed that the survival rate (SR), final body weight (FBW), weight gain rate (WGR), specific growth ratio (SGR) and protein efficiency ratio (PER) of L. vannamei significantly decreased, while the feed factor (FCR) significantly increased with the increase of stocking density. After Vibrio parahemolyticus infection, the SR of L. vannamei in the HSD group was significantly lower than that in the LSD and MSD groups. Increasing stocking density significantly increased the activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and lysozyme (LYS) while significantly decreased the activities of catalase (CAT) and phenol oxidase (PO) in the serum of L. vannamei. Similar changes of the gene expression as the activities of immune enzymes were found in the hemocytes. Pairwise comparison between the LSD, MSD and HSD group in the transcriptome analysis identified that there were 304, 1376 and 2083 differentially expressed genes (DEGs) in LSD vs MSD, MSD vs HSD and LSD vs HSD, respectively. Among them, most of the immune-related DEGs were down-regulated and metabolism-related DEGs were up-regulated with the increasing stocking density. In addition, KEGG enrichment pathway analysis revealed that several immune and metabolic related pathways including PI3K-Akt signaling pathway and AMPK signaling pathway were significantly enriched. Of these, the PI3K-Akt signaling pathway had the most DEGs and was also the most significantly enriched pathway. Furthermore, 16 DEGs (such as FOXO, PCK2 and CTSC, etc.) and partial immune enzyme activity (such as AST, CAT and PO, etc.) changes were closely correlated with the increase of stocking density when partial immune-related DEGs and immune-related enzymes were analyzed jointly. All these results indicated that changes in stocking density had a significant effect on the growth performance, immunity and transcriptome of L. vannamei.
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Affiliation(s)
- Hang Yuan
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Minghua Xie
- College of Fisheries and Life Science, Dalian Ocean University, Dalian, China; State Key Laboratory of Freshwater Ecology and Biotechnology, Hubei Hongshan Laboratory, The Innovation Academy of Seed Design, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Naijie Hu
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Yudong Zheng
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Cuihong Hou
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Beiping Tan
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China; Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, China; GuangDong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, 524088, China
| | - Lili Shi
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China
| | - Shuang Zhang
- College of Fisheries, Guangdong Ocean University, Zhanjiang, China; Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, China; GuangDong Engineering Technology Research Center of Aquatic Animals Precision Nutrition and High Efficiency Feed, Zhanjiang, China; Guangdong Provincial Key Laboratory of Aquatic Animal Disease Control and Healthy Culture, Zhanjiang, 524088, China.
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15
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Liu N, Yang X, Guo J, Zhang L, Huang S, Chen J, Huang J, Chen Y, Cui T, Zheng Y, Li T, Tang K, Zhong Y, Duan S, Yu L, Tang Y, Zheng D, Pan H, Gao Y. Hepatic ZBTB22 promotes hyperglycemia and insulin resistance via PEPCK1-driven gluconeogenesis. EMBO Rep 2023; 24:e56390. [PMID: 37154299 PMCID: PMC10240208 DOI: 10.15252/embr.202256390] [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: 10/28/2022] [Revised: 03/31/2023] [Accepted: 04/14/2023] [Indexed: 05/10/2023] Open
Abstract
Excessive gluconeogenesis can lead to hyperglycemia and diabetes through as yet incompletely understood mechanisms. Herein, we show that hepatic ZBTB22 expression is increased in both diabetic clinical samples and mice, being affected by nutritional status and hormones. Hepatic ZBTB22 overexpression increases the expression of gluconeogenic and lipogenic genes, heightening glucose output and lipids accumulation in mouse primary hepatocytes (MPHs), while ZBTB22 knockdown elicits opposite effects. Hepatic ZBTB22 overexpression induces glucose intolerance and insulin resistance, accompanied by moderate hepatosteatosis, while ZBTB22-deficient mice display improved energy expenditure, glucose tolerance, and insulin sensitivity, and reduced hepatic steatosis. Moreover, hepatic ZBTB22 knockout beneficially regulates gluconeogenic and lipogenic genes, thereby alleviating glucose intolerance, insulin resistance, and liver steatosis in db/db mice. ZBTB22 directly binds to the promoter region of PCK1 to enhance its expression and increase gluconeogenesis. PCK1 silencing markedly abolishes the effects of ZBTB22 overexpression on glucose and lipid metabolism in both MPHs and mice, along with the corresponding changes in gene expression. In conclusion, targeting hepatic ZBTB22/PEPCK1 provides a potential therapeutic approach for diabetes.
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Affiliation(s)
- Naihua Liu
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
- Key Specialty of Clinical PharmacyThe First Affiliated Hospital of Guangdong Pharmaceutical UniversityGuangzhouChina
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of TumorNanjing University of Chinese MedicineNanjingJiangsu ProvinceChina
| | - Xiaoying Yang
- Jiangsu Key Laboratory of Immunity and Metabolism, Department of Pathogen Biology and ImmunologyXuzhou Medical UniversityXuzhouChina
| | - Jingyi Guo
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Lei Zhang
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Shangyi Huang
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jiabing Chen
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Jiawen Huang
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Yingjian Chen
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Tianqi Cui
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Yi Zheng
- Faculty of Chinese MedicineMacau University of Science and TechnologyMacauChina
| | - Tianyao Li
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Kaijia Tang
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Yadi Zhong
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Siwei Duan
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
| | - Lili Yu
- Faculty of Chinese MedicineMacau University of Science and TechnologyMacauChina
| | - Ying Tang
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of TumorNanjing University of Chinese MedicineNanjingJiangsu ProvinceChina
| | - Dayong Zheng
- Department of HepatologyTCM‐Integrated Hospital of Southern Medical UniversityGuangzhouChina
- Department of HepatopancreatobiliaryCancer Center, Southern Medical UniversityGuangzhouChina
- Department of Oncology, The First Affiliated Hospital of Guangzhou University of Chinese MedicineGuangzhou University of Chinese MedicineGuangzhouChina
| | - Huafeng Pan
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of TumorNanjing University of Chinese MedicineNanjingJiangsu ProvinceChina
| | - Yong Gao
- Science and Technology Innovation CenterGuangzhou University of Chinese MedicineGuangzhouChina
- Jiangsu Collaborative Innovation Center of Traditional Chinese Medicine in Prevention and Treatment of TumorNanjing University of Chinese MedicineNanjingJiangsu ProvinceChina
- Division of Hypothalamic Research, Department of Internal MedicineThe University of Texas Southwestern Medical Center at DallasTXDallasUSA
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16
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Verissimo T, Dalga D, Arnoux G, Sakhi I, Faivre A, Auwerx H, Bourgeois S, Paolucci D, Gex Q, Rutkowski JM, Legouis D, Wagner CA, Hall AM, de Seigneux S. PCK1 is a key regulator of metabolic and mitochondrial functions in renal tubular cells. Am J Physiol Renal Physiol 2023; 324:F532-F543. [PMID: 37102687 PMCID: PMC10202477 DOI: 10.1152/ajprenal.00038.2023] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/28/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023] Open
Abstract
Phosphoenolpyruvate carboxykinase 1 (PCK1 or PEPCK-C) is a cytosolic enzyme converting oxaloacetate to phosphoenolpyruvate, with a potential role in gluconeogenesis, ammoniagenesis, and cataplerosis in the liver. Kidney proximal tubule cells display high expression of this enzyme, whose importance is currently not well defined. We generated PCK1 kidney-specific knockout and knockin mice under the tubular cell-specific PAX8 promoter. We studied the effect of PCK1 deletion and overexpression at the renal level on tubular physiology under normal conditions and during metabolic acidosis and proteinuric renal disease. PCK1 deletion led to hyperchloremic metabolic acidosis characterized by reduced but not abolished ammoniagenesis. PCK1 deletion also resulted in glycosuria, lactaturia, and altered systemic glucose and lactate metabolism at baseline and during metabolic acidosis. Metabolic acidosis resulted in kidney injury in PCK1-deficient animals with decreased creatinine clearance and albuminuria. PCK1 further regulated energy production by the proximal tubule, and PCK1 deletion decreased ATP generation. In proteinuric chronic kidney disease, mitigation of PCK1 downregulation led to better renal function preservation. PCK1 is essential for kidney tubular cell acid-base control, mitochondrial function, and glucose/lactate homeostasis. Loss of PCK1 increases tubular injury during acidosis. Mitigating kidney tubular PCK1 downregulation during proteinuric renal disease improves renal function.NEW & NOTEWORTHY Phosphoenolpyruvate carboxykinase 1 (PCK1) is highly expressed in the proximal tubule. We show here that this enzyme is crucial for the maintenance of normal tubular physiology, lactate, and glucose homeostasis. PCK1 is a regulator of acid-base balance and ammoniagenesis. Preventing PCK1 downregulation during renal injury improves renal function, rendering it an important target during renal disease.
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Affiliation(s)
- Thomas Verissimo
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
- Department of Medicine, Service of Nephrology, Geneva University Hospitals, Geneva, Switzerland
| | - Delal Dalga
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
- Department of Medicine, Service of Nephrology, Geneva University Hospitals, Geneva, Switzerland
| | - Grégoire Arnoux
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Imene Sakhi
- Institute of Anatomy, University of Zurich, Zurich, Switzerland
| | - Anna Faivre
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Hannah Auwerx
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Soline Bourgeois
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Deborah Paolucci
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Quentin Gex
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | | | - David Legouis
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
- Division of Intensive Care, Department of Acute Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Carsten A Wagner
- Institute of Physiology, University of Zurich, Zurich, Switzerland
| | - Andrew M Hall
- Institute of Anatomy, University of Zurich, Zurich, Switzerland
- Department of Nephrology, University Hospital Zurich, Zurich, Switzerland
| | - Sophie de Seigneux
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
- Department of Medicine, Service of Nephrology, Geneva University Hospitals, Geneva, Switzerland
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17
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Lu K, Wu J, Zhang Y, Zhuang W, Liang XF. Role of phosphoenolpyruvate carboxykinase 1 (pck1) in mediating nutrient metabolism in zebrafish. Funct Integr Genomics 2023; 23:67. [PMID: 36840800 DOI: 10.1007/s10142-023-00993-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 02/09/2023] [Accepted: 02/17/2023] [Indexed: 02/26/2023]
Abstract
Carbohydrates are the most economical source of energy in fish feeds, but most fish have limited ability to utilize carbohydrates. It has been reported that phosphoenolpyruvate carboxykinase 1 (pck1) is involved in carbohydrate metabolism, lipid metabolism, and other metabolic processes. However, direct evidence is lacking to fully understand the relationship between pck1 and glucose and lipid metabolism. Here, we generated a pck1 knockout zebrafish by CRISPR/cas9 system, and a high-carbohydrate diet was provided to 60 days post-fertilization (dpf) for 8 weeks. We found that pck1-deficient zebrafish displayed decreased plasma glucose, elevated mRNA levels of glycolysis-related genes (gck, pfk, pk), and reduced the transcriptional levels of gluconeogenic genes (pck1, fbp1a) in liver. We also found decreased triglyceride, total cholesterol, and lipid accumulation and in pck1-/- zebrafish, along with downregulation of genes for lipolysis (acaca) and lipogenesis (cpt1). In addition, the observation of HE staining revealed that the total muscle area of pck1-/- was substantially less than that of WT zebrafish and real-time PCR suggested that GH/IGF-1 signaling (ulk2, stat1b) may be suppressed in pck1-deficient fish. Taken together, these findings suggested that pck1 may play an important role in the high-carbohydrate diet utilization of fish and significantly affected lipid metabolism and protein synthesis in zebrafish. pck1 knockout mutant line could facilitate a further mechanism study of pck1-associated metabolic regulation and provide new information for improving carbohydrate utilization traits.
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Affiliation(s)
- Ke Lu
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan, 430070, Hubei Province, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Jiaqi Wu
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan, 430070, Hubei Province, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Yanpeng Zhang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan, 430070, Hubei Province, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Wuyuan Zhuang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan, 430070, Hubei Province, China.,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China
| | - Xu-Fang Liang
- College of Fisheries, Chinese Perch Research Center, Huazhong Agricultural University, No.1, Shizishan Street, Wuhan, 430070, Hubei Province, China. .,Engineering Research Center of Green Development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan, 430070, China.
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18
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Deciphering the mechanism of anhydrobiosis in the entomopathogenic nematode Heterorhabditis indica through comparative transcriptomics. PLoS One 2022; 17:e0275342. [PMID: 36301967 PMCID: PMC9612587 DOI: 10.1371/journal.pone.0275342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 09/14/2022] [Indexed: 11/07/2022] Open
Abstract
The entomopathogenic nematode, Heterorhabditis indica, is a popular biocontrol agent of high commercial significance. It possesses tremendous genetic architecture to survive desiccation stress by undergoing anhydrobiosis to increase its lifespan-an attribute exploited in the formulation technology. The comparative transcriptome of unstressed and anhydrobiotic H. indica revealed several previously concealed metabolic events crucial for adapting towards the moisture stress. During the induction of anhydrobiosis in the infective juveniles (IJ), 1584 transcripts were upregulated and 340 downregulated. As a strategy towards anhydrobiotic survival, the IJ showed activation of several genes critical to antioxidant defense, detoxification pathways, signal transduction, unfolded protein response and molecular chaperones and ubiquitin-proteasome system. Differential expression of several genes involved in gluconeogenesis - β-oxidation of fatty acids, glyoxylate pathway; glyceroneogenesis; fatty acid biosynthesis; amino-acid metabolism - shikimate pathway, sachharopine pathway, kyneurine pathway, lysine biosynthesis; one-carbon metabolism-polyamine pathway, transsulfuration pathway, folate cycle, methionine cycle, nucleotide biosynthesis; mevalonate pathway; and glyceraldehyde-3-phosphate dehydrogenase were also observed. We report the role of shikimate pathway, sachharopine pathway and glyceroneogenesis in anhydrobiotes, and seven classes of repeat proteins, specifically in H. indica for the first time. These results provide insights into anhydrobiotic survival strategies which can be utilized to strengthen the development of novel formulations with enhanced and sustained shelf-life.
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19
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Elsherbini AM, Alsamman AM, Elsherbiny NM, El-Sherbiny M, Ahmed R, Ebrahim HA, Bakkach J. Decoding Diabetes Biomarkers and Related Molecular Mechanisms by Using Machine Learning, Text Mining, and Gene Expression Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph192113890. [PMID: 36360783 PMCID: PMC9656783 DOI: 10.3390/ijerph192113890] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/18/2022] [Accepted: 10/18/2022] [Indexed: 05/13/2023]
Abstract
The molecular basis of diabetes mellitus is yet to be fully elucidated. We aimed to identify the most frequently reported and differential expressed genes (DEGs) in diabetes by using bioinformatics approaches. Text mining was used to screen 40,225 article abstracts from diabetes literature. These studies highlighted 5939 diabetes-related genes spread across 22 human chromosomes, with 112 genes mentioned in more than 50 studies. Among these genes, HNF4A, PPARA, VEGFA, TCF7L2, HLA-DRB1, PPARG, NOS3, KCNJ11, PRKAA2, and HNF1A were mentioned in more than 200 articles. These genes are correlated with the regulation of glycogen and polysaccharide, adipogenesis, AGE/RAGE, and macrophage differentiation. Three datasets (44 patients and 57 controls) were subjected to gene expression analysis. The analysis revealed 135 significant DEGs, of which CEACAM6, ENPP4, HDAC5, HPCAL1, PARVG, STYXL1, VPS28, ZBTB33, ZFP37 and CCDC58 were the top 10 DEGs. These genes were enriched in aerobic respiration, T-cell antigen receptor pathway, tricarboxylic acid metabolic process, vitamin D receptor pathway, toll-like receptor signaling, and endoplasmic reticulum (ER) unfolded protein response. The results of text mining and gene expression analyses used as attribute values for machine learning (ML) analysis. The decision tree, extra-tree regressor and random forest algorithms were used in ML analysis to identify unique markers that could be used as diabetes diagnosis tools. These algorithms produced prediction models with accuracy ranges from 0.6364 to 0.88 and overall confidence interval (CI) of 95%. There were 39 biomarkers that could distinguish diabetic and non-diabetic patients, 12 of which were repeated multiple times. The majority of these genes are associated with stress response, signalling regulation, locomotion, cell motility, growth, and muscle adaptation. Machine learning algorithms highlighted the use of the HLA-DQB1 gene as a biomarker for diabetes early detection. Our data mining and gene expression analysis have provided useful information about potential biomarkers in diabetes.
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Affiliation(s)
- Amira M. Elsherbini
- Department of Oral Biology, Faculty of Dentistry, Mansoura University, Mansoura 35116, Egypt
- Correspondence:
| | - Alsamman M. Alsamman
- Agricultural Genetic Engineering Research Institute, Agricultural Research Center, Giza 12619, Egypt
| | - Nehal M. Elsherbiny
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35116, Egypt
| | - Mohamed El-Sherbiny
- Department of Basic Medical Sciences, College of Medicine, AlMaarefa University, Riyadh 71666, Saudi Arabia
- Department of Anatomy, Mansoura Faculty of Medicine, Mansoura University, Mansoura 35116, Egypt
| | - Rehab Ahmed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, University of Tabuk, Tabuk 71491, Saudi Arabia
- Department of Pharmaceutics, Faculty of Pharmacy, University of Khartoum, Khartoum 11111, Sudan
| | - Hasnaa Ali Ebrahim
- Department of Basic Medical Sciences, College of Medicine, Princess Nourah bint Abdulrahman University, Riyadh 11671, Saudi Arabia
| | - Joaira Bakkach
- Biomedical Genomics and Oncogenetics Research Laboratory, Faculty of Sciences and Techniques of Tangier, Abdelmalek Essaâdi University Morocco, Tétouan 93000, Morocco
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20
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Goetz M, Schröter J, Dattner T, Brennenstuhl H, Lenz D, Opladen T, Hörster F, Okun JG, Hoffmann GF, Kölker S, Staufner C. Genotypic and phenotypic spectrum of cytosolic phosphoenolpyruvate carboxykinase deficiency. Mol Genet Metab 2022; 137:18-25. [PMID: 35868242 DOI: 10.1016/j.ymgme.2022.07.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 07/07/2022] [Accepted: 07/07/2022] [Indexed: 10/17/2022]
Abstract
OBJECTIVES Pathogenic biallelic variants in PCK1 coding for the cytosolic phosphoenolpyruvate carboxykinase (PEPCK-C) cause PEPCK-C deficiency, a rare disorder of gluconeogenesis presenting with hypoglycemia, lactic acidosis, and hepatopathy. To date, there has been no systematic analysis of its phenotypic, biochemical, and genetic spectrum. METHODS All currently published individuals and a novel patient with genetically confirmed PEPCK-C deficiency were included. Clinical, biochemical, and genetic findings were analyzed. Protein and in-silico prediction score modeling was applied to analyze potential variant effects. RESULTS Thirty-two individuals from 25 families were found, including one previously unreported patient. The typical biochemical pattern was hypoglycemia triggered by catabolic situations, elevated urinary concentrations of tricarboxylic acid cycle metabolites, mildly elevated alanine and aspartate aminotransferase and elevated lactate concentrations in serum. Plasma glutamine concentrations were elevated in some patients and may be a suitable marker for newborn screening. With adequate treatment, biochemical abnormalities usually normalized following a hypoglycemic episode. Symptom onset usually occurred in infancy with a broad range from neonatal age to adulthood. Regardless of the genotype, different phenotypes with a broad clinical spectrum were found. To date, eight genotypes with nine different PCK1 variants were identified, of which alleles with the recurrent variant c.925G > A; p.(Gly309Arg) are predominant and appear to be endemic in the Finnish population. Protein modeling suggests altered manganese- and substrate-binding as superordinate pathomechanisms. CONCLUSIONS Environmental factors appear to be the main determinant for the phenotype in patients with biallelic variants in PCK1. Based on the biochemical pattern, PEPCK-C deficiency is a recognizable cause of childhood hypoglycemia. It is a treatable disease and early diagnosis is important to prevent metabolic derailment and morbidity. Newborn screening can identify at least a sub-cohort of affected individuals through elevated glutamine concentrations in dry blood.
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Affiliation(s)
- M Goetz
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - J Schröter
- Division of Pediatric Epileptology, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - T Dattner
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - H Brennenstuhl
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - D Lenz
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - T Opladen
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - F Hörster
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - J G Okun
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - G F Hoffmann
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - S Kölker
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany
| | - C Staufner
- Division of Child Neurology and Metabolic Disorders, Center for Pediatrics and Adolescent Medicine, University Hospital Heidelberg, Heidelberg, Germany..
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21
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Liu X, Bai Y, Cui R, He S, Ling Y, Wu C, Fang M. Integrated Analysis of the ceRNA Network and M-7474 Function in Testosterone-Mediated Fat Deposition in Pigs. Genes (Basel) 2022; 13:genes13040668. [PMID: 35456474 PMCID: PMC9032878 DOI: 10.3390/genes13040668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/30/2022] [Accepted: 04/06/2022] [Indexed: 02/01/2023] Open
Abstract
Castration can significantly enhance fat deposition in pigs, and the molecular mechanism of fat deposition caused by castration and its influence on fat deposition in different parts of pigs remain unclear. RNA-seq was performed on adipose tissue from different parts of castrated and intact Yorkshire pigs. Different ceRNA networks were constructed for different fat parts. GO and KEGG pathway annotations suggested that testosterone elevates cell migration and affects differentiation and apoptosis in back fat, while it predisposes animals to glycolipid metabolism disorders and increases the expression of inflammatory cytokines in abdominal fat. The interaction between M-7474, novel_miR_243 and SGK1 was verified by dual fluorescence experiments. This ceRNA relationship has also been demonstrated in porcine preadipocytes. Overexpression of M-7474 significantly inhibited the differentiation of preadipocytes compared to the control group. When 100 nM testosterone was added during preadipocyte differentiation, the expression of M-7474 was increased, and preadipocyte differentiation was significantly inhibited. Testosterone can affect preadipocyte differentiation by upregulating the expression of M-7474, sponging novel-miR-243, and regulating the expression of genes such as SGK1. At the same time, HSD11B1 and SLC2A4 may also be regulated by the corresponding lncRNA and miRNA, which ultimately affects glucose uptake by adipocytes and leads to obesity.
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Affiliation(s)
- Ximing Liu
- National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.L.); (R.C.); (S.H.); (Y.L.); (C.W.)
| | - Ying Bai
- College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056021, China;
| | - Ran Cui
- National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.L.); (R.C.); (S.H.); (Y.L.); (C.W.)
| | - Shuaihan He
- National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.L.); (R.C.); (S.H.); (Y.L.); (C.W.)
| | - Yao Ling
- National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.L.); (R.C.); (S.H.); (Y.L.); (C.W.)
| | - Changxin Wu
- National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.L.); (R.C.); (S.H.); (Y.L.); (C.W.)
| | - Meiying Fang
- National Engineering Laboratory for Animal Breeding, MOA Laboratory of Animal Genetics and Breeding, Department of Animal Genetics and Breeding, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China; (X.L.); (R.C.); (S.H.); (Y.L.); (C.W.)
- Sanya Institute of China Agricultural University, Sanya 572025, China
- Correspondence: ; Tel.: +86-10-62734943; Fax: +86-10-62734943
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22
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Ugrica M, Gehring N, Giesbertz P, Pastor-Arroyo EM, Daniel H, Wagner CA, Rubio-Aliaga I. Chronic High Phosphate Intake in Mice Affects Macronutrient Utilization and Body Composition. Mol Nutr Food Res 2022; 66:e2100949. [PMID: 35194921 DOI: 10.1002/mnfr.202100949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 02/04/2022] [Indexed: 11/11/2022]
Abstract
SCOPE In the last decades, dietary phosphate intake has increased due to a higher consumption of processed food. This higher intake has an impact on body composition and health state. Recently, we found that a high chronic phosphate diet leads to no major renal alterations, but negatively affects parameters of bone health probably due to the chronic acid load. Here we assessed the effect of high phosphate consumption on parameters of energy metabolism. METHODS AND RESULTS Healthy mature adult mice were fed for 1 year or four months with either a standard (0.6 % w/w) or a high phosphate (1.2 % w/w) diet. Males and females of two different genetic backgrounds were investigated. Mice fed the high phosphate diet showed an attenuated body-weight gain, lower respiratory exchange ratio, decreased body fat mass and increased lean-to-fat mass ratio. Moreover, the high phosphate diet led to fasting hypoglycemia with no differences in the glucose response to an oral glucose tolerance test. Triglycerides and cholesterol in blood were similar independently of dietary phosphate content. However, 1-methylhistidine was lower in animals fed a chronic high phosphate intake. CONCLUSIONS High phosphate diet attenuates body weight gain, but induces hypoglycaemia and may alter muscle homeostasis. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Marko Ugrica
- Institute of Physiology, University of Zurich, and National Center of Competence in Research NCCR Kidney, Zurich, 8057, Switzerland
| | - Nicole Gehring
- Institute of Physiology, University of Zurich, and National Center of Competence in Research NCCR Kidney, Zurich, 8057, Switzerland
| | - Pieter Giesbertz
- Nutritional Physiology, Technical University of Munich, Freising, 85354, Germany
| | - Eva-Maria Pastor-Arroyo
- Institute of Physiology, University of Zurich, and National Center of Competence in Research NCCR Kidney, Zurich, 8057, Switzerland
| | - Hannelore Daniel
- Nutritional Physiology, Technical University of Munich, Freising, 85354, Germany
| | - Carsten A Wagner
- Institute of Physiology, University of Zurich, and National Center of Competence in Research NCCR Kidney, Zurich, 8057, Switzerland
| | - Isabel Rubio-Aliaga
- Institute of Physiology, University of Zurich, and National Center of Competence in Research NCCR Kidney, Zurich, 8057, Switzerland
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23
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Benítez R, Núñez Y, Ayuso M, Isabel B, Fernández-Barroso MA, De Mercado E, Gómez-Izquierdo E, García-Casco JM, López-Bote C, Óvilo C. Changes in Biceps femoris Transcriptome along Growth in Iberian Pigs Fed Different Energy Sources and Comparative Analysis with Duroc Breed. Animals (Basel) 2021; 11:ani11123505. [PMID: 34944282 PMCID: PMC8697974 DOI: 10.3390/ani11123505] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/26/2021] [Accepted: 12/06/2021] [Indexed: 12/19/2022] Open
Abstract
Simple Summary The genetic mechanisms that regulate biological processes, such as skeletal muscle development and growth, or intramuscular fat deposition, have attracted great interest, given their impact on production traits and meat quality. In this sense, a comparison of the transcriptome of skeletal muscle between phenotypically different pig breeds, or along growth, could be useful to improve the understanding of the molecular processes underlying the differences in muscle metabolism and phenotypic traits, potentially driving the identification of causal genes, regulators and metabolic pathways involved in their variability. Abstract This experiment was conducted to investigate the effects of developmental stage, breed, and diet energy source on the genome-wide expression, meat quality traits, and tissue composition of biceps femoris muscle in growing pure Iberian and Duroc pigs. The study comprised 59 Iberian (IB) and 19 Duroc (DU) animals, who started the treatment at an average live weight (LW) of 19.9 kg. The animals were kept under identical management conditions and fed two diets with different energy sources (6% high oleic sunflower oil or carbohydrates). Twenty-nine IB animals were slaughtered after seven days of treatment at an average LW of 24.1 kg, and 30 IB animals plus all the DU animals were slaughtered after 47 days at an average LW of 50.7 kg. The main factors affecting the muscle transcriptome were age, with 1832 differentially expressed genes (DEGs), and breed (1055 DEGs), while the effect of diet on the transcriptome was very small. The results indicated transcriptome changes along time in Iberian animals, being especially related to growth and tissue development, extracellular matrix (ECM) composition, and cytoskeleton organization, with DEGs affecting relevant functions and biological pathways, such as myogenesis. The breed also affected functions related to muscle development and cytoskeleton organization, as well as functions related to solute transport and lipid and carbohydrate metabolism. Taking into account the results of the two main comparisons (age and breed effects), we can postulate that the Iberian breed is more precocious than the Duroc breed, regarding myogenesis and muscle development, in the studied growing stage.
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Affiliation(s)
- Rita Benítez
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Yolanda Núñez
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Miriam Ayuso
- Department of Veterinary Sciences, Faculty of Biomedical, Pharmaceutical and Veterinary Sciences, University of Antwerp, B-2610 Wilrijk, Belgium;
| | - Beatriz Isabel
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain; (B.I.); (C.L.-B.)
| | - Miguel A. Fernández-Barroso
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Eduardo De Mercado
- Centro de Pruebas de Porcino ITACYL, Hontalbilla, 40353 Segovia, Spain; (E.D.M.); (E.G.-I.)
| | - Emilio Gómez-Izquierdo
- Centro de Pruebas de Porcino ITACYL, Hontalbilla, 40353 Segovia, Spain; (E.D.M.); (E.G.-I.)
| | - Juan M. García-Casco
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
| | - Clemente López-Bote
- Departamento de Producción Animal, Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain; (B.I.); (C.L.-B.)
| | - Cristina Óvilo
- Departamento de Mejora Genética Animal, Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), 28040 Madrid, Spain; (R.B.); (Y.N.); (M.A.F.-B.); (J.M.G.-C.)
- Correspondence: ; Tel.: +34-91-3471492
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Liang Y, Zhang T, Zhao J, Li C, Zou H, Li F, Zhang J, Ren L. Glucocorticoid receptor-mediated alleviation of inflammation by berberine: in vitro, in silico and in vivo investigations. Food Funct 2021; 12:11974-11986. [PMID: 34747965 DOI: 10.1039/d1fo01612a] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
As a natural dietary ingredient, berberine possesses multiple biological activities including anti-inflammatory effects. In this work, glucocorticoid receptor (GR)-mediated alleviation of inflammation by berberine was investigated by a combination of in vitro, in silico, and in vivo approaches. The fluorescence polarization assay showed that berberine bound to GR with an IC50 value of 9.14 ± 0.16 pM. Molecular docking and molecular dynamics simulation suggested that berberine bound stably to the active site of GR via hydrogen bonding and hydrophobic interactions. Berberine induced GR nuclear translocation but did not activate the glucocorticoid response element in HeLa cells. Furthermore, both gene and protein expressions of PEPCK were significantly attenuated by berberine in HepG2 cells. Interestingly, berberine downregulated CBG mRNA and protein levels without up-regulating TAT mRNA and protein levels in HepG2 cells, demonstrating its dissociated characteristics that could separate transrepression from transactivation. In addition, the in vitro and in vivo anti-inflammatory effects of berberine were confirmed in lipopolysaccharide-induced RAW 264.7 cells and in a mouse model of allergic contact dermatitis, respectively. In conclusion, berberine might serve as a potential selective GR modulator.
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Affiliation(s)
- Yuan Liang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Tiehua Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Jingqi Zhao
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Chenfei Li
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Haoyang Zou
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Fangyu Li
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Jie Zhang
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
| | - Li Ren
- College of Food Science and Engineering, Jilin University, Changchun 130062, China.
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25
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Faivre A, Verissimo T, Auwerx H, Legouis D, de Seigneux S. Tubular Cell Glucose Metabolism Shift During Acute and Chronic Injuries. Front Med (Lausanne) 2021; 8:742072. [PMID: 34778303 PMCID: PMC8585753 DOI: 10.3389/fmed.2021.742072] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 10/11/2021] [Indexed: 12/28/2022] Open
Abstract
Acute and chronic kidney disease are responsible for large healthcare costs worldwide. During injury, kidney metabolism undergoes profound modifications in order to adapt to oxygen and nutrient shortage. Several studies highlighted recently the importance of these metabolic adaptations in acute as well as in chronic phases of renal disease, with a potential deleterious effect on fibrosis progression. Until recently, glucose metabolism in the kidney has been poorly studied, even though the kidney has the capacity to use and produce glucose, depending on the segment of the nephron. During physiology, renal proximal tubular cells use the beta-oxidation of fatty acid to generate large amounts of energy, and can also produce glucose through gluconeogenesis. In acute kidney injury, proximal tubular cells metabolism undergo a metabolic shift, shifting away from beta-oxidation of fatty acids and gluconeogenesis toward glycolysis. In chronic kidney disease, the loss of fatty acid oxidation is also well-described, and data about glucose metabolism are emerging. We here review the modifications of proximal tubular cells glucose metabolism during acute and chronic kidney disease and their potential consequences, as well as the potential therapeutic implications.
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Affiliation(s)
- Anna Faivre
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Thomas Verissimo
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - Hannah Auwerx
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
| | - David Legouis
- Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland.,Intensive Care Unit, Department of Acute Medicine, Geneva University Hospitals, Geneva, Switzerland
| | - Sophie de Seigneux
- Laboratory of Nephrology, Geneva University Hospitals, Geneva, Switzerland.,Department of Cell Physiology and Metabolism, University of Geneva, Geneva, Switzerland
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Differential expression of gluconeogenic enzymes in early- and late-stage diabetes: the effect of Citrullus colocynthis (L.) Schrad. Seed extract on hyperglycemia and hyperlipidemia in Wistar-Albino rats model. CLINICAL PHYTOSCIENCE 2021. [DOI: 10.1186/s40816-021-00324-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The medicinal plant Citrullus colocynthis (L.) Schrad. (C. colocynthis) may benefit patients at different phases of diabetes by attuning to contrasting situations. Our primary objective was to find the mechanism(s) behind the antidiabetic/anti-hyperlipidemic effects of C.colocynthis seed aqueous extract (CCAE) in two different stages of type 2 diabetes (T2D) in rats.
Methods
Fasting blood sugar (FBS) levels, body weights, and the degree of impaired glucose tolerance (IGT) were measured in healthy nondiabetic control rats (Con), as well as rats with early and late stages of T2D, denoted as ET2D and LT2D, respectively. CCAE was intraperitoneally (IP) injected for 28 days. In the end, the hepatic mRNA expression levels of the following genes were determined by RT-PCR: glucose-6-phosphatase (G6Pase), phosphoenolpyruvate carboxykinase (PEPCK), insulin-dependent sterol regulatory element-binding protein-1c (SREBP-1c), acetyl-CoA carboxylase (ACC), fatty acid synthase (FAS), peroxisome proliferator-activated receptor alpha (PPARα), and carnitine palmitoyltransferase I (CPT1). The liver was examined by hematoxylin and eosin (H&E) and Oil-Red O staining. CCAE was partially analyzed by HPLC-DAD.
Results
ET2D and LT2D were characterized by differentially elevated FBS, deteriorated bodyweight, and significant IGT compared to Con. Hepatosteatoses of varying morphologies and higher hepatic expression of G6Pase than PRPCK in ET2D versus the opposite in LT2D further confirmed the divergent nature of metabolic aberrations. At the end of 28 days, the high levels of FBS, alkaline phosphatase (ALP), triglyceride (TG), urea, hepatic protein carbonyl content (PCC), and alanine and aspartate aminotransferases (AST and ALT, respectively) persisted in untreated LT2D. CCAE ameliorated oxidative stress and upregulated PPARα expression in diabetic groups and Con; it downregulated CPT1 expression in the LT2D group. CCAE’s ability to lower FBS and serum and hepatic TG in both ET2D and LT2D indicated its ability to act via different mechanisms. Ferulic acid (Fer A) and rutin hydrate (RH) were detected in CCAE.
Conclusion
CCAE lowered the FBS in ET2D via inhibiting the hepatic G6Pase expression (glycogenolysis). In LT2D, CCAE abated sugar levels by diverting PEPCK activity, preferably towards glyceroneogenesis than gluconeogenesis. The preserved triglyceride/fatty acid (TG/FA) cycle, the upregulated PPARα, and the downregulated CPT1 gene expressions reduced serum and hepatic TG.
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Chao CH, Wang CY, Wang CH, Chen TW, Hsu HY, Huang HW, Li CW, Mai RT. Mutant p53 Attenuates Oxidative Phosphorylation and Facilitates Cancer Stemness through Downregulating miR-200c-PCK2 Axis in Basal-Like Breast Cancer. Mol Cancer Res 2021; 19:1900-1916. [PMID: 34312289 DOI: 10.1158/1541-7786.mcr-21-0098] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Revised: 05/17/2021] [Accepted: 07/19/2021] [Indexed: 12/24/2022]
Abstract
miR-200c is a tumor suppressor miRNA that plays a critical role in regulating epithelial phenotype and cancer stemness. p53 deficiency downregulates the expression of miR-200c and leads to epithelial-mesenchymal transition (EMT) and stemness phenotype, which contributes to the progression of breast cancers. In this study, we demonstrated that CRISPR-mediated knockout (KO) of miR-200c induces metabolic features similar to the metabolic rewiring caused by p53 hot-spot mutations, and that impairing this metabolic reprogramming interferes with miR-200c deficiency-induced stemness and transformation. Moreover, restoring miR-200c expression compromised EMT, stem-cell properties, and the Warburg effect caused by p53 mutations, suggesting that mutant p53 (MTp53) induces EMT-associated phenotypes and metabolic reprogramming by downregulating miR-200c. Mechanistically, decreased expression of PCK2 was observed in miR-200c- and p53-deficient mammary epithelial cells, and forced expression of miR-200c restored PCK2 in p53 mutant-expressing cells. Reduced PCK2 expression not only led to attenuated oxidative phosphorylation (OXPHOS) and increased stemness in normal mammary epithelial cells but also compromised the enhanced OXPHOS and suppression of cancer stemness exerted by miR-200c in p53 mutation-bearing basal-like breast cancer (BLBC) cells. Clinically, PCK2 expression is negatively associated with EMT markers and is downregulated in basal-like subtype and cases with low miR-200c expression or p53 mutation. Notably, low expression of PCK2 is associated with poor overall survival (OS) in patients with breast cancer. IMPLICATIONS: Together, our results suggest that p53 and miR-200c regulate OXPHOS and stem/cancer stemness through PCK2, and loss of the p53-miR-200c-PCK2 axis might provide metabolic advantages that facilitate cancer stemness, leading to the progression of BLBCs.
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Affiliation(s)
- Chi-Hong Chao
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan.
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Chen-Yun Wang
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Cing-Hong Wang
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Ting-Wen Chen
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Institute of Bioinformatics and Systems Biology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Bioinformatics and Systems Biology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Huai-Yu Hsu
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Institute of Molecular Medicine and Bioengineering, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Hao-Wei Huang
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
| | - Chia-Wei Li
- Institute of Biomedical Sciences, Academia Sinica, Taipei, Taiwan
| | - Ru-Tsun Mai
- Department of Biological Science and Technology, College of Biological Science and Technology, National Chiao Tung University, Hsinchu, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Chiao Tung University, Hsinchu, Taiwan
- Center For Intelligent Drug Systems and Smart Bio-devices, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
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Glade MJ, Crook MA. Choline deficiency: Is it being recognized? Nutrition 2021; 94:111509. [PMID: 34862116 DOI: 10.1016/j.nut.2021.111509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 09/29/2021] [Accepted: 10/01/2021] [Indexed: 11/15/2022]
Affiliation(s)
| | - Martin A Crook
- Department of Clinical Biochemistry and Metabolic Medicine, Guy's & St Thomas' Hospitals, London, UK.
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Warburg Effect, Glutamine, Succinate, Alanine, When Oxygen Matters. BIOLOGY 2021; 10:biology10101000. [PMID: 34681099 PMCID: PMC8533123 DOI: 10.3390/biology10101000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/27/2021] [Accepted: 09/29/2021] [Indexed: 01/12/2023]
Abstract
Cellular bioenergetics requires an intense ATP turnover that is increased further by hypermetabolic states caused by cancer growth or inflammation. Both are associated with metabolic alterations and, notably, enhancement of the Warburg effect (also known as aerobic glycolysis) of poor efficiency with regard to glucose consumption when compared to mitochondrial respiration. Therefore, beside this efficiency issue, other properties of these two pathways should be considered to explain this paradox: (1) biosynthesis, for this only indirect effect should be considered, since lactate release competes with biosynthetic pathways in the use of glucose; (2) ATP production, although inefficient, glycolysis shows other advantages when compared to mitochondrial respiration and lactate release may therefore reflect that the glycolytic flux is higher than required to feed mitochondria with pyruvate and glycolytic NADH; (3) Oxygen supply becomes critical under hypermetabolic conditions, and the ATP/O2 ratio quantifies the efficiency of oxygen use to regenerate ATP, although aerobic metabolism remains intense the participation of anaerobic metabolisms (lactic fermentation or succinate generation) could greatly increase ATP/O2 ratio; (4) time and space constraints would explain that anaerobic metabolism is required while the general metabolism appears oxidative; and (5) active repression of respiration by glycolytic intermediates, which could ensure optimization of glucose and oxygen use.
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30
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Gutiérrez Y, Fresch M, Hellmann SL, Hankeln T, Scherber C, Brockmeyer J. A multifactorial proteomics approach to sex‐specific effects of diet composition and social environment in an omnivorous insect. Ecol Evol 2021. [DOI: 10.1002/ece3.7676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Affiliation(s)
- Yeisson Gutiérrez
- Centro de Bioinformática y Biología Computacional de Colombia – BIOS Manizales Colombia
| | - Marion Fresch
- Department Food Chemistry Institute for Biochemistry and Technical Biochemistry University of Stuttgart Stuttgart Germany
| | - Sören L. Hellmann
- Institute of Organismic and Molecular Evolutionary Biology University of Mainz Mainz Germany
| | - Thomas Hankeln
- Institute of Organismic and Molecular Evolutionary Biology University of Mainz Mainz Germany
| | - Christoph Scherber
- Institute of Landscape Ecology University of Münster Münster Germany
- Centre for Biodiversity Monitoring Zoological Research Museum Alexander Koenig Bonn Germany
| | - Jens Brockmeyer
- Department Food Chemistry Institute for Biochemistry and Technical Biochemistry University of Stuttgart Stuttgart Germany
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Alger JR, Minhajuddin A, Dean Sherry A, Malloy CR. Analysis of steady-state carbon tracer experiments using akaike information criteria. Metabolomics 2021; 17:61. [PMID: 34148138 DOI: 10.1007/s11306-021-01807-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Accepted: 05/29/2021] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Carbon isotope tracers have been used to determine relative rates of tricarboxylic acid cycle (TCA) cycle pathways since the 1950s. Steady-state experimental data are typically fit to a single mathematical model of metabolism to determine metabolic fluxes. Whether the chosen model is appropriate for the biological system has generally not been evaluated systematically. An overly-simple model omits known pathways while an overly-complex model may produce incorrect results due to overfitting. OBJECTIVES The objectives were to develop and study a method that systematically evaluates multiple TCA cycle mathematical models as part of the fitting process. METHODS The problem of choosing overly-simple or overly-complex models was approached by developing software that automatically explores all possible combinations of flux through pyruvate dehydrogenase, pyruvate kinase, pyruvate carboxylase and anaplerosis at propionyl-CoA carboxylase, and equivalent pathways, all relative to TCA cycle flux. Typical TCA cycle metabolic tracer experiments that use 13C nuclear magnetic resonance for detection and quantification of 13C-enriched glutamate products were simulated and analyzed. By evaluating the multiple model fits with both the conventional sum-of-squares residual error (SSRE) and the Akaike Information Criterion (AIC), the software helps the investigator understand the interaction between model complexity and goodness of fit. RESULTS When fitting alternative models of the TCA cycle metabolism, the SSRE may identify more than one model that fits the data well. Among those models, the AIC provides guidance as to which is the simplest of the candidate models is sufficient to describe the observed data. However under some conditions, AIC used alone inappropriately discriminates against necessary metabolic complexity. CONCLUSION In combination, the SSRE and AIC help the investigator identify the model that best describes the metabolism of a biological system.
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Affiliation(s)
- Jeffry R Alger
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- NeuroSpectroScopics LLC, Sherman Oaks, CA, USA.
- Department of Neurology, Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA.
- Hura Imaging Inc, Calabasas, CA, USA.
| | - Abu Minhajuddin
- Department of Population and Data Sciences, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - A Dean Sherry
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Chemistry, University of Texas at Dallas, Richardson, TX, USA
| | - Craig R Malloy
- Advanced Imaging Research Center, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
- Veterans Affairs North Texas Healthcare System, Dallas, TX, USA
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32
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Pandey S, Tuma Z, Smrhova T, Cedikova M, Macanova T, Chottova Dvorakova M. Laser Capture Microdissection Coupled Capillary Immunoassay to Study the Expression of PCK-2 on Spatially-Resolved Islets of Rat Langerhans. Pharmaceutics 2021; 13:pharmaceutics13060883. [PMID: 34203686 PMCID: PMC8232303 DOI: 10.3390/pharmaceutics13060883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/02/2021] [Accepted: 06/09/2021] [Indexed: 11/25/2022] Open
Abstract
The platform for precise proteomic profiling of targeted cell populations from heterogeneous tissue sections is developed. We demonstrate a seamless and systematic integration of LCM with an automated cap-IA for the handling of a very small-sized dissected tissues section from the kidney, liver and pancreatic Langerhans islet of rats. Our analysis reveals that the lowest LCM section area ≥ 0.125 mm2 with 10 µm thickness can be optimized for the detection of proteins through LCM-cap-IA integration. We detect signals ranging from a highly-abundant protein, β-actin, to a low-abundance protein, LC-3AB, using 0.125 mm2 LCM section from rat kidney, but, so far, a relatively large section is required for good quality of results. This integration is applicable for a highly-sensitive and accurate assessment of microdissected tissue sections to decipher hidden proteomic information of pure targeted cells. To validate this integration, PCK2 protein expression is studied within Langerhans islets of normal and diabetic rats. Our results show significant overexpression of PCK2 in Langerhans islets of rats with long-term diabetes.
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Affiliation(s)
- Shashank Pandey
- Department of Pharmacology and Toxicology, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic; (Z.T.); (M.C.); (M.C.D.)
- Correspondence:
| | - Zdenek Tuma
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic; (Z.T.); (M.C.); (M.C.D.)
| | - Tereza Smrhova
- Department of Physiology, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic;
| | - Miroslava Cedikova
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic; (Z.T.); (M.C.); (M.C.D.)
- Department of Physiology, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic;
| | - Tereza Macanova
- Department of Biology, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic;
| | - Magdalena Chottova Dvorakova
- Biomedical Center, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic; (Z.T.); (M.C.); (M.C.D.)
- Department of Physiology, Faculty of Medicine in Pilsen, Charles University, Alej Svobody 1655/76, 32300 Pilsen, Czech Republic;
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Cai Z, Yang C, Liao J, Song H, Zhang S. Sex-biased genes and metabolites explain morphologically sexual dimorphism and reproductive costs in Salix paraplesia catkins. HORTICULTURE RESEARCH 2021; 8:125. [PMID: 34059667 PMCID: PMC8166972 DOI: 10.1038/s41438-021-00566-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Revised: 03/16/2021] [Accepted: 03/22/2021] [Indexed: 05/10/2023]
Abstract
Dioecious species evolved from species with monomorphic sex systems in order to achieve overall fitness gains by separating male and female functions. As reproductive organs, unisexual flowers have different reproductive roles and exhibit conspicuous sexual dimorphism. To date, little is known about the temporal variations in and molecular mechanisms underlying the morphology and reproductive costs of dioecious flowers. We investigated male and female flowers of Salix paraplesia in three flowering stages before pollination (the early, blooming and late stages) via transcriptional sequencing as well as metabolite content and phenotypic analysis. We found that a large number of sex-biased genes, rather than sex-limited genes, were responsible for sexual dimorphism in S. paraplesia flowers and that the variation in gene expression in male flowers intensified this situation throughout flower development. The temporal dynamics of sex-biased genes derived from changes in reproductive function during the different flowering stages. Sexually differentiated metabolites related to respiration and flavonoid biosynthesis exhibited the same bias directions as the sex-biased genes. These sex-biased genes were involved mainly in signal transduction, photosynthesis, respiration, cell proliferation, phytochrome biosynthesis, and phenol metabolism; therefore, they resulted in more biomass accumulation and higher energy consumption in male catkins. Our results indicated that sex-biased gene expression in S. paraplesia flowers is associated with different reproductive investments in unisexual flowers; male flowers require a greater reproductive investment to meet their higher biomass accumulation and energy consumption needs.
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Affiliation(s)
- Zeyu Cai
- Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Congcong Yang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Jun Liao
- College of Geography and Tourism, Chongqing Normal University, Chongqing, China
| | - Haifeng Song
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China
| | - Sheng Zhang
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, China.
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Yu S, Meng S, Xiang M, Ma H. Phosphoenolpyruvate carboxykinase in cell metabolism: Roles and mechanisms beyond gluconeogenesis. Mol Metab 2021; 53:101257. [PMID: 34020084 PMCID: PMC8190478 DOI: 10.1016/j.molmet.2021.101257] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/12/2021] [Accepted: 05/13/2021] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Phosphoenolpyruvate carboxykinase (PCK) has been almost exclusively recognized as a critical enzyme in gluconeogenesis, especially in the liver and kidney. Accumulating evidence has shown that the enhanced activity of PCK leads to increased glucose output and exacerbation of diabetes, whereas the defects of PCK result in lethal hypoglycemia. Genetic mutations or polymorphisms are reported to be related to the onset and progression of diabetes in humans. SCOPE OF REVIEW Recent studies revealed that the PCK pathway is more complex than just gluconeogenesis, depending on the health or disease condition. Dysregulation of PCK may contribute to the development of obesity, cardiac hypertrophy, stroke, and cancer. Moreover, a regulatory network with multiple layers, from epigenetic regulation, transcription regulation, to posttranscription regulation, precisely tunes the expression of PCK. Deciphering the molecular basis that regulates PCK may pave the way for developing practical strategies to treat metabolic dysfunction. MAJOR CONCLUSIONS In this review, we summarize the metabolic and non-metabolic roles of the PCK enzyme in cells, especially beyond gluconeogenesis. We highlight the distinct functions of PCK isoforms (PCK1 and PCK2), depict a detailed network regulating PCK's expression, and discuss its clinical relevance. We also discuss the therapeutic potential targeting PCK and the future direction that is highly in need to better understand PCK-mediated signaling under diverse conditions.
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Affiliation(s)
- Shuo Yu
- Anesthesiology Department, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Simin Meng
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China
| | - Meixiang Xiang
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.
| | - Hong Ma
- Department of Cardiology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, 310009, China.
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Koendjbiharie JG, van Kranenburg R, Kengen SWM. The PEP-pyruvate-oxaloacetate node: variation at the heart of metabolism. FEMS Microbiol Rev 2021; 45:fuaa061. [PMID: 33289792 PMCID: PMC8100219 DOI: 10.1093/femsre/fuaa061] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 11/18/2020] [Indexed: 12/15/2022] Open
Abstract
At the junction between the glycolysis and the tricarboxylic acid cycle-as well as various other metabolic pathways-lies the phosphoenolpyruvate (PEP)-pyruvate-oxaloacetate node (PPO-node). These three metabolites form the core of a network involving at least eleven different types of enzymes, each with numerous subtypes. Obviously, no single organism maintains each of these eleven enzymes; instead, different organisms possess different subsets in their PPO-node, which results in a remarkable degree of variation, despite connecting such deeply conserved metabolic pathways as the glycolysis and the tricarboxylic acid cycle. The PPO-node enzymes play a crucial role in cellular energetics, with most of them involved in (de)phosphorylation of nucleotide phosphates, while those responsible for malate conversion are important redox enzymes. Variations in PPO-node therefore reflect the different energetic niches that organisms can occupy. In this review, we give an overview of the biochemistry of these eleven PPO-node enzymes. We attempt to highlight the variation that exists, both in PPO-node compositions, as well as in the roles that the enzymes can have within those different settings, through various recent discoveries in both bacteria and archaea that reveal deviations from canonical functions.
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Affiliation(s)
- Jeroen G Koendjbiharie
- Laboratory of Microbiology, Wageningen University, Stippeneng4, 6708 WE Wageningen, The Netherlands
| | - Richard van Kranenburg
- Laboratory of Microbiology, Wageningen University, Stippeneng4, 6708 WE Wageningen, The Netherlands
- Corbion, Arkelsedijk 46, 4206 AC Gorinchem, The Netherlands
| | - Servé W M Kengen
- Laboratory of Microbiology, Wageningen University, Stippeneng4, 6708 WE Wageningen, The Netherlands
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Zhang Q, Yang Y, Lu Y, Cao Z. iTRAQ-based quantitative proteomic analyses the cycle chronic heat stress affecting liver proteome in yellow-feather chickens. Poult Sci 2021; 100:101111. [PMID: 33965807 PMCID: PMC8120948 DOI: 10.1016/j.psj.2021.101111] [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: 09/15/2020] [Revised: 12/16/2020] [Accepted: 03/02/2021] [Indexed: 02/07/2023] Open
Abstract
Heat stress (HS) is one of the main environmental factors affecting the efficiency of poultry production. The yellow-feather chickens (YFC) as an indigenous strain of chicken is a popular poultry breed in China. Our previous study used the RNA-seq to analyze the gene expression profiles of male YFC under HS and showed that the lipid and energy metabolism pathways are activated in livers of YFC exposed to acute HS (38°C, 4 h and 25°C recovery 2 h). In this study, we used quantitative proteome analysis based on iTRAQ to study the liver response of YFC to cycle chronic HS (38 ± 1°C, 8 h/d, 7 d, CyCHS). The male YFCs treatment used the CyCHS from 22 to 28 days of age. The liver tissue samples were collected at 28 d old. A total of 39,327 unique peptides matches were detected using iTRAQ analysis and 4,571 proteins exhibited a false discovery rate of 1% or less. Forty-six significant differentially expressed proteins (DEPs) were detected in the CyCHS group compared with the control group for the liver samples, including up- and down-regulated DEPs were 18 and 28, respectively. We found that the enriched biological process terms of the DEPs expressed in the liver were related to DNA metabolic process, oxidation-reduction process, oxidative stress and gluconeogenesis. In KEGG pathway analysis. Most of the hepatic DEPs were annotated to glutathione metabolism and TCA cycle in response to CyCHS. The up-regulation of 5 DEPs (GPX1, GSTT1, GSTT1L, RRM2, and LOC100859645) in the glutathione metabolism pathway likely reflects an attempt to deal with oxidative damage by CyCHS. The down-regulation of 3 DEPs (Isocitrate dehydrogenase [IDH3A], IDH3B, and phosphoenolpyruvate carboxykinase 1) in the TCA cycle pathway contributes to the regulation mechanism of energy metabolism and probably to cope with the balance of heat production and dissipation during CyCHS in order to adapt to high temperature environments. Our results provide insights into the potential molecular mechanism in heat-induced oxidative stress and energy in YFCs and future studies will investigate the functional genes associated with the response to HS.
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Affiliation(s)
- Quan Zhang
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China.
| | - YuZe Yang
- Beijing General Station of Animal Husbandry, Beijing, China
| | - YongQiang Lu
- Beijing General Station of Animal Husbandry, Beijing, China
| | - ZiWen Cao
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China
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Das BK, Knott RM, Gadad PC. Metformin and asarone inhibit HepG2 cell proliferation in a high glucose environment by regulating AMPK and Akt signaling pathway. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2021. [DOI: 10.1186/s43094-021-00193-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Abstract
Background
Metabolic dysregulation is one of the hallmarks of tumor cell proliferation. Evidence indicates the potential role of the 5′adenosine monophosphate-activated protein kinase (AMPK) and protein kinase B/Akt signaling pathway in regulating cell proliferation, survival, and apoptosis. The present study explores the effect of metformin HCl and the combination of α- and β-asarone on the proliferation of HepG2 cells in the presence of high glucose levels simulating the diabetic-hepatocellular carcinoma (HCC) condition.
Results
The metformin and asarone reduced HepG2 cell viability in a dose-dependent manner and induced morphological changes as indicated by methyl thiazolyl tetrazolium (MTT) assay. The metformin and asarone arrested the cells at the G0/G1 phase, upregulated the expression of AMPK, and downregulated Akt expression in high glucose conditions as identified by the flow cytometry technique. Further, the upregulated AMPK led to a decrease in the expression of phosphoenolpyruvate carboxykinase-2 (PCK-2) and sterol regulatory element-binding protein-1 (SREBP-1).
Conclusion
The anti-proliferative effect of metformin and asarone in the diabetic-HCC condition is mediated via AMPK and Akt pathway.
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Grasmann G, Mondal A, Leithner K. Flexibility and Adaptation of Cancer Cells in a Heterogenous Metabolic Microenvironment. Int J Mol Sci 2021; 22:1476. [PMID: 33540663 PMCID: PMC7867260 DOI: 10.3390/ijms22031476] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 01/28/2021] [Accepted: 01/29/2021] [Indexed: 02/06/2023] Open
Abstract
The metabolic microenvironment, comprising all soluble and insoluble nutrients and co-factors in the extracellular milieu, has a major impact on cancer cell proliferation and survival. A large body of evidence from recent studies suggests that tumor cells show a high degree of metabolic flexibility and adapt to variations in nutrient availability. Insufficient vascular networks and an imbalance of supply and demand shape the metabolic tumor microenvironment, which typically contains a lower concentration of glucose compared to normal tissues. The present review sheds light on the recent literature on adaptive responses in cancer cells to nutrient deprivation. It focuses on the utilization of alternative nutrients in anabolic metabolic pathways in cancer cells, including soluble metabolites and macromolecules and outlines the role of central metabolic enzymes conferring metabolic flexibility, like gluconeogenesis enzymes. Moreover, a conceptual framework for potential therapies targeting metabolically flexible cancer cells is presented.
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Affiliation(s)
- Gabriele Grasmann
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, A-8036 Graz, Austria; (G.G.); (A.M.)
| | - Ayusi Mondal
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, A-8036 Graz, Austria; (G.G.); (A.M.)
| | - Katharina Leithner
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, A-8036 Graz, Austria; (G.G.); (A.M.)
- BioTechMed-Graz, A-8010 Graz, Austria
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Khal De Souza S, Sarapio E, Lopes Vogt E, Schein V, Bandeira Fabres R, Felipe Argenta Model J, Vieira Lima M, Santos Rocha D, Silveira Martins Da Silva R. Effects of stanniocalcin hormones on rat hepatic glucose homeostasis under fed and fasted conditions. Gen Comp Endocrinol 2021; 302:113661. [PMID: 33220302 DOI: 10.1016/j.ygcen.2020.113661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 10/16/2020] [Accepted: 11/12/2020] [Indexed: 10/22/2022]
Abstract
To test the hypothesis of conservation of stanniocalcin 1 and 2 (STC-1; STC-2) metabolic functions in vertebrates, we performed an in vitro study to determine if these hormones are implicated in regulation of the gluconeogenesis pathway, glycogen synthesis, and 14C-glucose conversion to 14CO2 in livers from fed and fasting rats (Rattus norvegicus). Stc1 and Stc2 gene expressions increased in the liver after fasting. STC-1 participated in the regulation of the hepatic gluconeogenesis pathway in rats when the precursor was 14C-lactate. STC-2 demonstrated variational signaling on rat hepatic gluconeogenesis activity and Pck1 gene expression, decreasing levels in the fed state when the substrate was 14C-alanine and increasing levels during fasting when the substrate was 14C-lactate. At the concentrations used in this study, STC-1 and STC-2 did not affect glycogen concentration and synthesis from 14C-glucose or 14C-glucose conversion to 14CO2 in the livers from fed or fasting rats. These findings highlight the role of stanniocalcins in the hepatic gluconeogenesis pathway in mammals and confirm the conservation of STC-1 and STC-2 metabolic functions in the vertebrates.
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Affiliation(s)
- Samir Khal De Souza
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Elaine Sarapio
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Everton Lopes Vogt
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Vanessa Schein
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rafael Bandeira Fabres
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | - Matheus Vieira Lima
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Débora Santos Rocha
- Departament of Physiology, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
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Latorre-Muro P, Baeza J, Hurtado-Guerrero R, Hicks T, Delso I, Hernández-Ruiz C, Velázquez-Campoy A, Lawton AJ, Angulo J, Denu JM, Carrodeguas JA. Self-acetylation at the active site of phosphoenolpyruvate carboxykinase (PCK1) controls enzyme activity. J Biol Chem 2021; 296:100205. [PMID: 33334880 PMCID: PMC7948413 DOI: 10.1074/jbc.ra120.015103] [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: 07/26/2020] [Revised: 12/12/2020] [Accepted: 12/17/2020] [Indexed: 12/13/2022] Open
Abstract
Acetylation is known to regulate the activity of cytosolic phosphoenolpyruvate carboxykinase (PCK1), a key enzyme in gluconeogenesis, by promoting the reverse reaction of the enzyme (converting phosphoenolpyruvate to oxaloacetate). It is also known that the histone acetyltransferase p300 can induce PCK1 acetylation in cells, but whether that is a direct or indirect function was not known. Here we initially set out to determine whether p300 can acetylate directly PCK1 in vitro. We report that p300 weakly acetylates PCK1, but surprisingly, using several techniques including protein crystallization, mass spectrometry, isothermal titration calorimetry, saturation-transfer difference nuclear magnetic resonance and molecular docking, we found that PCK1 is also able to acetylate itself using acetyl-CoA independently of p300. This reaction yielded an acetylated recombinant PCK1 with a 3-fold decrease in kcat without changes in Km for all substrates. Acetylation stoichiometry was determined for 14 residues, including residues lining the active site. Structural and kinetic analyses determined that site-directed acetylation of K244, located inside the active site, altered this site and rendered the enzyme inactive. In addition, we found that acetyl-CoA binding to the active site is specific and metal dependent. Our findings provide direct evidence for acetyl-CoA binding and chemical reaction with the active site of PCK1 and suggest a newly discovered regulatory mechanism of PCK1 during metabolic stress.
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Affiliation(s)
- Pedro Latorre-Muro
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Zaragoza, Spain.
| | - Josue Baeza
- Wisconsin Institute for Discovery and Department of Biomolecular Chemistry, School of Medicine and Public Health-Madison, Madison, Wisconsin, USA
| | - Ramon Hurtado-Guerrero
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Zaragoza, Spain; Department of Cellular and Molecular Medicine, Copenhagen Center for Glycomics, University of Copenhagen, Copenhagen, Denmark; Laboratorio de Microscopías Avanzadas (LMA), University of Zaragoza, Zaragoza, Spain; Fundación ARAID, Zaragoza, Spain
| | - Thomas Hicks
- School of Pharmacy, University of East Anglia, Norwich, UK
| | - Ignacio Delso
- Instituto de Síntesis Química y Catálisis Homogénea (ISQCH), Universidad de Zaragoza, CSIC, Zaragoza, Spain
| | - Cristina Hernández-Ruiz
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Zaragoza, Spain
| | - Adrian Velázquez-Campoy
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Zaragoza, Spain; Fundación ARAID, Zaragoza, Spain; Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza, Spain; Biomedical Research Network Center in Hepatic and Digestive Diseases (CIBERehd), Madrid, Spain; IIS Aragón, Zaragoza, Spain
| | - Alexis J Lawton
- Wisconsin Institute for Discovery and Department of Biomolecular Chemistry, School of Medicine and Public Health-Madison, Madison, Wisconsin, USA
| | - Jesús Angulo
- School of Pharmacy, University of East Anglia, Norwich, UK; Departamento de Química Orgánica, Universidad de Sevilla, Sevilla, Spain; Instituto de Investigaciones Químicas (CSIC-Universidad de Sevilla), Sevilla, Spain
| | - John M Denu
- Wisconsin Institute for Discovery and Department of Biomolecular Chemistry, School of Medicine and Public Health-Madison, Madison, Wisconsin, USA
| | - José A Carrodeguas
- Institute of Biocomputation and Physics of Complex Systems (BIFI), University of Zaragoza, Zaragoza, Spain; Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza, Spain; IIS Aragón, Zaragoza, Spain.
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The phosphoenolpyruvate carboxykinase (PEPCK) inhibitor, 3-mercaptopicolinic acid (3-MPA), induces myogenic differentiation in C2C12 cells. Sci Rep 2020; 10:22177. [PMID: 33335245 PMCID: PMC7747743 DOI: 10.1038/s41598-020-79324-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 12/02/2020] [Indexed: 12/16/2022] Open
Abstract
Phosphoenolpyruvate carboxykinase (PEPCK) is a gluconeogenic enzyme with a cytosolic (Pck1/PEPCK-C) and mitochondrial (Pck2/PEPCK-M) isoform. Here we investigate the effect of 3-mercaptopicolinic acid (3-MPA), a PEPCK inhibitor, on C2C12 muscle cells. We report that Pck2 mRNA is 50–5000-fold higher than Pck1 during C2C12 myogenesis, indicating Pck2 is the predominant PEPCK isoform. C2C12 cell proliferation was inhibited in a dose-dependent manner following 48 h 3-MPA treatment (0.01–1 mM). C2C12 myogenic differentiation was significantly induced following 3-MPA treatment (0.25, 0.5, 1 mM) from day 0 of differentiation, demonstrated by increased creatine kinase activity, fusion index and myotube diameter; likewise, the myosin heavy chain (MyHC)-IIB isoform (encoded by Myh4) is an indicator of hypertrophy, and both porcine MYH4-promoter activity and endogenous Myh4 mRNA were also significantly induced. High doses (0.5 and/or 1 mM) of 3-MPA reduced mRNA expression of Pck2 and genes associated with serine biosynthesis (Phosphoglycerate dehydrogenase, Phgdh; phosphoserine aminotransferase-1, Psat1) following treatment from days 0 and 4. To conclude, as Pck2/PEPCK-M is the predominant isoform in C2C12 cells, we postulate that 3-MPA promoted myogenic differentiation through the inhibition of PEPCK-M. However, we were unable to confirm that 3-MPA inhibited PEPCK-M enzyme activity as 3-MPA interfered with the PEPCK enzyme assay, particularly at 0.5 and 1 mM.
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Yegorova S, Yegorov O, Ferreira LF. RNA-sequencing reveals transcriptional signature of pathological remodeling in the diaphragm of rats after myocardial infarction. Gene 2020; 770:145356. [PMID: 33333219 DOI: 10.1016/j.gene.2020.145356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 11/11/2020] [Accepted: 12/01/2020] [Indexed: 12/21/2022]
Abstract
The diaphragm is the main inspiratory muscle, and the chronic phase post-myocardial infarction (MI) is characterized by diaphragm morphological, contractile, and metabolic abnormalities. However, the mechanisms of diaphragm weakness are not fully understood. In the current study, we aimed to identify the transcriptome changes associated with diaphragm abnormalities in the chronic stage MI. We ligated the left coronary artery to cause MI in rats and performed RNA-sequencing (RNA-Seq) in diaphragm samples 16 weeks post-surgery. The sham group underwent thoracotomy and pericardiotomy but no artery ligation. We identified 112 differentially expressed genes (DEGs) out of a total of 9664 genes. Myocardial infarction upregulated and downregulated 42 and 70 genes, respectively. Analysis of DEGs in the framework of skeletal muscle-specific biological networks suggest remodeling in the neuromuscular junction, extracellular matrix, sarcomere, cytoskeleton, and changes in metabolism and iron homeostasis. Overall, the data are consistent with pathological remodeling of the diaphragm and reveal potential biological targets to prevent diaphragm weakness in the chronic stage MI.
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Affiliation(s)
- Svetlana Yegorova
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL 32611, USA.
| | - Oleg Yegorov
- Department of Neurosurgery, University of Florida, Gainesville, FL 32611, USA.
| | - Leonardo F Ferreira
- Department of Applied Physiology and Kinesiology, University of Florida, Gainesville, FL 32611, USA.
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Ali A, Swanepoel CM, Winger QA, Rozance PJ, Anthony RV. Chorionic somatomammotropin RNA interference alters fetal liver glucose utilization. J Endocrinol 2020; 247:251-262. [PMID: 33108344 PMCID: PMC7643541 DOI: 10.1530/joe-20-0375] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 09/22/2020] [Indexed: 12/20/2022]
Abstract
Chorionic somatomammotropin (CSH) is a placenta-specific hormone associated with fetal growth, and fetal and maternal metabolism in both humans and sheep. We hypothesized that CSH deficiency could impact sheep fetal liver glucose utilization. To generate CSH-deficient pregnancies, day 9 hatched blastocysts were infected with lentiviral particles expressing CSH-specific shRNA (RNAi) or scramble control shRNA (SC) and transferred to synchronized recipients. CSH RNAi generated two distinct phenotypes at 135 days of gestational age (dGA); pregnancies with IUGR (RNAi-IUGR) or with normal fetal weight (RNAi-NW). Fetal body, fetal liver and placental weights were reduced (P < 0.05) only in RNAi-IUGR pregnancies compared to SC. Umbilical artery plasma insulin and insulin-like growth factor 1 (IGF1) concentrations were decreased, whereas insulin receptor beta (INSR) concentration in fetal liver was increased (P < 0.05) in both RNAi phenotypes. The mRNA concentrations of IGF1, IGF2, IGF binding protein 2 (IGFBP2) and IGFBP3 were decreased (P < 0.05) in fetal livers from both RNAi phenotypes. Fetal liver glycogen concentration and glycogen synthase 1 (GYS1) concentration were increased (P < 0.05), whereas fetal liver phosphorylated-GYS (inactive GYS) concentration was reduced (P < 0.05) in both RNAi phenotypes. Lactate dehydrogenase B (LDHB) concentration was increased (P < 0.05) and IGF2 concentration was decreased (P < 0.05) in RNAi-IUGR fetal livers only. Our findings suggest that fetal liver glucose utilization is impacted by CSH RNAi, independent of IUGR, and is likely tied to enhanced fetal liver insulin sensitivity in both RNAi phenotypes. Determining the physiological ramifications of both phenotypes, may help to differentiate direct effect of CSH deficiency or its indirect effect through IUGR.
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Affiliation(s)
- Asghar Ali
- Colorado State University, Animal Reproduction and Biotechnology Lab, Fort Collins, CO, US
| | - Callie M. Swanepoel
- Colorado State University, Animal Reproduction and Biotechnology Lab, Fort Collins, CO, US
| | - Quinton A. Winger
- Colorado State University, Animal Reproduction and Biotechnology Lab, Fort Collins, CO, US
| | - Paul J. Rozance
- University of Colorado Anschutz Medical Campus, Perinatal Research Center, Aurora, CO, US
| | - Russell V. Anthony
- Colorado State University, Animal Reproduction and Biotechnology Lab, Fort Collins, CO, US
- Corresponding Author: 1683 Campus Delivery, 3107 Rampart Road, Colorado State University, Fort Collins, CO 80523-1683. Telephone: 970-491-2586; FAX: 970-491-3557;
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Jarrar Y, Zihlif M, Al Bawab AQ, Sharab A. Effects of Intermittent Hypoxia on Expression of Glucose Metabolism Genes in MCF7 Breast Cancer Cell Line. Curr Cancer Drug Targets 2020; 20:216-222. [PMID: 31738135 DOI: 10.2174/1568009619666191116095847] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/10/2019] [Accepted: 10/03/2019] [Indexed: 12/18/2022]
Abstract
BACKGROUND Hypoxic condition induces molecular alterations which affect the survival rate and chemo-resistant phenotype of cancer cells. OBJECTIVE The aim of this study is to investigate the influence of intermittent hypoxic conditions on the expression of glucose metabolism genes in breast cancer MCF7 cell line. METHODS The gene expression was analyzed using a polymerase chain reaction-array method. In addition, the cell resistance, survival and migration rates were examined to assure the hypoxic influence on the cells. RESULTS 30 hypoxic episodes induced the Warburg effect through significant (p-value < 0.05) upregulation of the expression of PCK2, PHKG1, ALDOC, G6PC, GYS2, ALDOB, HK3, PKLR, PGK2, PDK2, ACO1 and H6PD genes that are involved in glycolysis, were obtained. Furthermore, the expression of the major gluconeogenesis enzyme genes was significantly (ANOVA, p-value < 0.05) downregulated. These molecular alterations were associated with increased MCF7 cell division and migration rate. However, molecular and phenotypic changes induced after 30 episodes were normalized in MCF7 cells exposed to 60 hypoxic episodes. CONCLUSION It is concluded, from this study, that 30 intermitted hypoxic episodes increased the survival rate of MCF7 breast cancer cells and induced the Warburg effect through upregulation of the expression of genes involved in the glycolysis pathway. These results may increase our understanding of the molecular alterations of breast cancer cells under hypoxic conditions.
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Affiliation(s)
- Yazun Jarrar
- Department of Pharmaceutical Science, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
| | - Malek Zihlif
- Department of Pharmacology, Faculty of Medicine, The University of Jordan, Amman, Jordan
| | - Abdel Qader Al Bawab
- Department of Pharmaceutical Science, Faculty of Pharmacy, Al-Zaytoonah University of Jordan, Amman, Jordan
| | - Ahmad Sharab
- Department of Pharmacology, Faculty of Medicine, The University of Jordan, Amman, Jordan
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Novel missense variants in PCK1 gene cause cytosolic PEPCK deficiency with growth failure from inadequate caloric intake. J Hum Genet 2020; 66:321-325. [PMID: 32908218 DOI: 10.1038/s10038-020-00823-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 08/04/2020] [Accepted: 08/05/2020] [Indexed: 12/31/2022]
Abstract
Cytosolic PEPCK deficiency (PCKDC) is a rare autosomal recessive inborn error of metabolism, which can present with hypoglycemia, lactic acidosis, and liver failure. It is caused by biallelic pathogenic variants in the PCK1 gene. Only four PCK1 variants have been previously reported in seven patients with PCKDC, and their clinical course of this condition has not been well characterized. Here, we report a Hispanic male with novel biallelic PCK1 variants, p.(Gly430Asp) and p.(His496Gln), who had a unique clinical presentation. He presented with a new onset of growth failure, elevated blood lactate, transaminitis, and abnormal urine metabolites profile, but he has not had documented hypoglycemia. Growth restriction happened due to insufficient caloric intake, and it was improved with nutritional intervention. PCKDC is a manageable disorder and therefore appropriate nutritional and clinical suspicion from typical lab abnormalities which lead to molecular confirmation tests are essential to prevent poor clinical outcomes.
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Smolle E, Leko P, Stacher-Priehse E, Brcic L, El-Heliebi A, Hofmann L, Quehenberger F, Hrzenjak A, Popper HH, Olschewski H, Leithner K. Distribution and prognostic significance of gluconeogenesis and glycolysis in lung cancer. Mol Oncol 2020; 14:2853-2867. [PMID: 32777161 PMCID: PMC7607181 DOI: 10.1002/1878-0261.12780] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Accepted: 08/07/2020] [Indexed: 12/24/2022] Open
Abstract
Inhibition of glycolysis has been considered as a therapeutic approach in aggressive cancers including lung cancer. Abbreviated gluconeogenesis, mediated by phosphoenolpyruvate carboxykinase (PEPCK), was recently discovered to partially circumvent the need for glycolysis in lung cancer cells. However, the interplay of glycolysis and gluconeogenesis in lung cancer is still poorly understood. Here, we analyzed the expression of GLUT1, the prime glucose transporter, and of PCK1 and PCK2, the cytoplasmic and mitochondrial isoforms of PEPCK, in 450 samples of non‐small cell lung cancer (NSCLC) and in 54 NSCLC metastases using tissue microarrays and whole tumor sections. Spatial distribution was assessed by automated image analysis. Additionally, glycolytic and gluconeogenic gene expression was inferred from The Cancer Genome Atlas (TCGA) datasets. We found that PCK2 was preferentially expressed in the lung adenocarcinoma subtype, while GLUT1 expression was higher in squamous cell carcinoma. GLUT1 and PCK2 were inversely correlated, GLUT1 showing elevated expression in larger tumors while PCK2 was highest in smaller tumors. However, a mixed phenotype showing the presence of both, glycolytic and gluconeogenic cancer cells was frequent. In lung adenocarcinoma, PCK2 expression was associated with significantly improved overall survival, while the opposite was found for GLUT1. The metabolic tumor microenvironment and the 3‐dimensional context play an important role in modulating both pathways, since PCK2 expression preferentially occurred at the tumor margin and hypoxia regulated both, glycolysis and gluconeogenesis, in NSCLC cells in vitro, albeit in opposite directions. PCK1/2 expression was enhanced in metastases compared to primary tumors, possibly related to the different environment. The results of this study show that glycolysis and gluconeogenesis are activated in NSCLC in a tumor size and oxygenation modulated manner and differentially correlate with outcome. The frequent co‐activation of gluconeogenesis and glycolysis in NSCLC should be considered in potential future therapeutic strategies targeting cancer cell metabolism.
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Affiliation(s)
- Elisabeth Smolle
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria
| | - Petra Leko
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria
| | | | - Luka Brcic
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Austria
| | - Amin El-Heliebi
- Gottfried Schatz Research Center, Department of Cell Biology, Histology and Embryology, Medical University of Graz, Austria.,Center for Biomarker Research in Medicine (CBmed), Graz, Austria
| | - Lilli Hofmann
- Center for Biomarker Research in Medicine (CBmed), Graz, Austria
| | - Franz Quehenberger
- Institute of Medical Informatics, Statistics and Documentation, Medical University of Graz, Austria
| | - Andelko Hrzenjak
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria.,Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Helmut H Popper
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Austria
| | - Horst Olschewski
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria.,Ludwig Boltzmann Institute for Lung Vascular Research, Graz, Austria
| | - Katharina Leithner
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Austria
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47
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Gluconeogenesis and PEPCK are critical components of healthy aging and dietary restriction life extension. PLoS Genet 2020; 16:e1008982. [PMID: 32841230 PMCID: PMC7473531 DOI: 10.1371/journal.pgen.1008982] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 09/04/2020] [Accepted: 07/07/2020] [Indexed: 02/06/2023] Open
Abstract
High glucose diets are unhealthy, although the mechanisms by which elevated glucose is harmful to whole animal physiology are not well understood. In Caenorhabditis elegans, high glucose shortens lifespan, while chemically inflicted glucose restriction promotes longevity. We investigated the impact of glucose metabolism on aging quality (maintained locomotory capacity and median lifespan) and found that, in addition to shortening lifespan, excess glucose negatively impacts locomotory healthspan. Conversely, disrupting glucose utilization by knockdown of glycolysis-specific genes results in large mid-age physical improvements via a mechanism that requires the FOXO transcription factor DAF-16. Adult locomotory capacity is extended by glycolysis disruption, but maximum lifespan is not, indicating that limiting glycolysis can increase the proportion of life spent in mobility health. We also considered the largely ignored role of glucose biosynthesis (gluconeogenesis) in adult health. Directed perturbations of gluconeogenic genes that specify single direction enzymatic reactions for glucose synthesis decrease locomotory healthspan, suggesting that gluconeogenesis is needed for healthy aging. Consistent with this idea, overexpression of the central gluconeogenic gene pck-2 (encoding PEPCK) increases health measures via a mechanism that requires DAF-16 to promote pck-2 expression in specific intestinal cells. Dietary restriction also features DAF-16-dependent pck-2 expression in the intestine, and the healthspan benefits conferred by dietary restriction require pck-2. Together, our results describe a new paradigm in which nutritional signals engage gluconeogenesis to influence aging quality via DAF-16. These data underscore the idea that promotion of gluconeogenesis might be an unappreciated goal for healthy aging and could constitute a novel target for pharmacological interventions that counter high glucose consequences, including diabetes. It is known that high levels of dietary sugar can negatively impact human health, but the mechanisms underlying this remain unclear. Here we use the facile Caenorhabditis elegans genetic model to extend understanding of the impact of glucose and glucose metabolism on health and aging. We show that the two opposing glucose metabolism pathways–glycolysis and gluconeogenesis–have dramatically opposite effects on health: glycolytic activity responsible for sugar catabolism is detrimental, but driving gluconeogenesis promotes healthy aging. The powerful longevity regulator DAF-16 is required for the healthspan effects of gluconeogenesis. Our data highlight the intriguing possibility that driving the biosynthetic gluconeogenesis pathway could be a novel strategy for healthspan promotion. Indeed, we find that increasing levels of the core gluconeogenic enzyme PEPCK (PCK-2) in just a few intestinal cells can increase overall health in a DAF-16-dependent manner. Dietary restriction, which can promote health and longevity across species, increases PCK-2 levels in the intestine via DAF-16, and PCK-2 is required for the health benefits seen when calories are limited. Our results define gluconeogenic metabolism as a key component of healthy aging, and suggest that interventions that promote gluconeogenesis may help combat the onset of age-related diseases, including diabetes.
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48
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Uengwetwanit T, Uawisetwathana U, Arayamethakorn S, Khudet J, Chaiyapechara S, Karoonuthaisiri N, Rungrassamee W. Multi-omics analysis to examine microbiota, host gene expression and metabolites in the intestine of black tiger shrimp ( Penaeus monodon) with different growth performance. PeerJ 2020; 8:e9646. [PMID: 32864208 PMCID: PMC7430268 DOI: 10.7717/peerj.9646] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Accepted: 07/12/2020] [Indexed: 12/20/2022] Open
Abstract
Understanding the correlation between shrimp growth and their intestinal bacteria would be necessary to optimize animal's growth performance. Here, we compared the bacterial profiles along with the shrimp's gene expression responses and metabolites in the intestines between the Top and the Bottom weight groups. Black tiger shrimp (Penaeus monodon) were collected from the same population and rearing environments. The two weight groups, the Top-weight group with an average weight of 36.82 ± 0.41 g and the Bottom-weight group with an average weight of 17.80 ± 11.81 g, were selected. Intestines were aseptically collected and subjected to microbiota, transcriptomic and metabolomic profile analyses. The weighted-principal coordinates analysis (PCoA) based on UniFrac distances showed similar bacterial profiles between the two groups, suggesting similar relative composition of the overall bacterial community structures. This observed similarity was likely due to the fact that shrimp were from the same genetic background and reared under the same habitat and diets. On the other hand, the unweighted-distance matrix revealed that the bacterial profiles associated in intestines of the Top-weight group were clustered distinctly from those of the Bottom-weight shrimp, suggesting that some unique non-dominant bacterial genera were found associated with either group. The key bacterial members associated to the Top-weight shrimp were mostly from Firmicutes (Brevibacillus and Fusibacter) and Bacteroidetes (Spongiimonas), both of which were found in significantly higher abundance than those of the Bottom-weight shrimp. Transcriptomic profile of shrimp intestines found significant upregulation of genes mostly involved in nutrient metabolisms and energy storage in the Top-weight shrimp. In addition to significantly expressed metabolic-related genes, the Bottom-weight shrimp also showed significant upregulation of stress and immune-related genes, suggesting that these pathways might contribute to different degrees of shrimp growth performance. A non-targeted metabolome analysis from shrimp intestines revealed different metabolic responsive patterns, in which the Top-weight shrimp contained significantly higher levels of short chain fatty acids, lipids and organic compounds than the Bottom-weight shrimp. The identified metabolites included those that were known to be produced by intestinal bacteria such as butyric acid, 4-indolecarbaldehyde and L-3-phenyllactic acid as well as those produced by shrimp such as acyl-carnitines and lysophosphatidylcholine. The functions of these metabolites were related to nutrient absorption and metabolisms. Our findings provide the first report utilizing multi-omics integration approach to investigate microbiota, metabolic and transcriptomics profiles of the host shrimp and their potential roles and relationship to shrimp growth performance.
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Affiliation(s)
- Tanaporn Uengwetwanit
- Microarray Research Team, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
| | - Umaporn Uawisetwathana
- Microarray Research Team, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
| | - Sopacha Arayamethakorn
- Microarray Research Team, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
| | - Juthatip Khudet
- Shrimp Genetic Improvement Center, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
| | - Sage Chaiyapechara
- Aquaculture Service Development Research Team, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
| | - Nitsara Karoonuthaisiri
- Microarray Research Team, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
| | - Wanilada Rungrassamee
- Microarray Research Team, National Center for Genetic Engineering and Biotechnology, Pathum Thani, Thailand
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Gao S, Zhang F, Sun H, Yang X. LncRNA GA-Binding Protein Transcription Factor Subunit Beta-1 Antisense RNA 1 Inhibits Renal Carcinoma Growth Through an MiR-1246/Phosphoenolpyruvate Carboxykinase 1 Pathway. Onco Targets Ther 2020; 13:6827-6836. [PMID: 32764970 PMCID: PMC7367931 DOI: 10.2147/ott.s257275] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 07/01/2020] [Indexed: 12/30/2022] Open
Abstract
Objective To clarify the role and mechanism of GABPB1-AS1 in renal cell carcinoma. Methods We collected 48 pairs of tumor and adjacent normal tissues from patients with clear cell renal cell carcinoma (ccRCC). Both 786-o and caki-1 ccRCC cell lines were transfected with GA-binding protein transcription factor subunit beta-1 antisense RNA 1 (GABPB1-AS1), miR-1246, or small interfering RNA phosphoenolpyruvate carboxykinase 1 (siPCK1) vectors. RNA expression was examined by quantitative reverse transcription-PCR and protein expression by Western blot. Cell proliferation was measured by Cell Counting Kit-8 assays. Cell migration and invasion were measured by transwell assays. Targeting relationships between genes were tested by luciferase reporter gene assays. Results Lower GABPB1-AS1 expression was found in ccRCC cells and tissues. GABPB1-AS1 expression was inversely associated with tumor size, TNM stage, and Furhman stage. High GABPB1-AS1 expression was associated with a better prognosis. GABPB1-AS1 overexpression significantly inhibited proliferation, migration, and invasion by 786-o and caki-1 cells. GABPB1-AS1 overexpression reduced tumor weights in xenograft experiments. Luciferase reporter assays showed that miR-1246 overexpression significantly inhibited the luciferase activity of 786-o and caki-1 cells transfected with wild-type (WT)-GABPB1-AS1 or WT-PCK1. Knockdown of PCK1 weakened the inhibition of proliferation, migration, and invasion induced by GABPB1-AS1 overexpression in 786-o and caki-1 cells. Conclusion GABPB1-AS1 inhibits ccRCC growth and plays a tumor suppressor role through an miR-1246/PCK1 axis.
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Affiliation(s)
- Shuang Gao
- Department of Pathology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China.,Department of Pathology, People's Hospital of Liaoning Province, Shenyang 110016, People's Republic of China
| | - Feng Zhang
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Hanxue Sun
- Department of Pathology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
| | - Xianghong Yang
- Department of Pathology, Shengjing Hospital of China Medical University, Shenyang 110004, People's Republic of China
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50
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Hara Y, Watanabe N. Changes in expression of genes related to glucose metabolism in liver and skeletal muscle of rats exposed to acute hypoxia. Heliyon 2020; 6:e04334. [PMID: 32642586 PMCID: PMC7334421 DOI: 10.1016/j.heliyon.2020.e04334] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 02/01/2019] [Accepted: 06/24/2020] [Indexed: 02/08/2023] Open
Abstract
The aim of this study was to determine changes in gene expression associated with glucose metabolism in the liver and soleus muscles of rats exposed to hypoxia to improve work capacity under high altitude conditions. Rats were divided into normobaric normoxia (control) and normobaric hypoxia (hypoxia) groups (n = 7 each), and the hypoxia group was exposed to 10.5% oxygen for 90 min. Glucose metabolism-related gene expression was examined by real-time polymerase chain reaction. In the liver, the expression levels of the glucose utilization-related genes solute carrier family 2 member 1, glucokinase, and liver-type phosphofructokinase and the gluconeogenesis-related gene phosphoenolpyruvate carboxykinase 1 (Pck1) were significantly increased upon hypoxic exposure. In contrast, gene expression in the soleus was unchanged, with the exception of Pck1. The results suggest that under hypoxia, both glucose utilization and gluconeogenesis are accelerated in the liver, and liver glycogen is degraded to maintain blood glucose level.
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Affiliation(s)
- Yurie Hara
- Department of Nutritional Science, Tokyo Kasei University, 1-18-1 Kaga, Itabashi, Tokyo, 173-8602, Japan
| | - Nakamichi Watanabe
- Department of Health Science, Showa Women's University, 1-7-57 Taishido, Setagaya, Tokyo, 154-8533, Japan
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