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Helms RS, Marin-Gonzalez A, Patel CH, Sun IH, Wen J, Leone RD, Duvall B, Gao RD, Ha T, Tsukamoto T, Slusher BS, Pomerantz JL, Powell JD. SIKs Regulate HDAC7 Stabilization and Cytokine Recall in Late-Stage T Cell Effector Differentiation. J Immunol 2023; 211:1767-1782. [PMID: 37947442 PMCID: PMC10842463 DOI: 10.4049/jimmunol.2300248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Accepted: 10/05/2023] [Indexed: 11/12/2023]
Abstract
Understanding the mechanisms underlying the acquisition and maintenance of effector function during T cell differentiation is important to unraveling how these processes can be dysregulated in the context of disease and manipulated for therapeutic intervention. In this study, we report the identification of a previously unappreciated regulator of murine T cell differentiation through the evaluation of a previously unreported activity of the kinase inhibitor, BioE-1197. Specifically, we demonstrate that liver kinase B1 (LKB1)-mediated activation of salt-inducible kinases epigenetically regulates cytokine recall potential in effector CD8+ and Th1 cells. Evaluation of this phenotype revealed that salt-inducible kinase-mediated phosphorylation-dependent stabilization of histone deacetylase 7 (HDAC7) occurred during late-stage effector differentiation. HDAC7 stabilization increased nuclear HDAC7 levels, which correlated with total and cytokine loci-specific reductions in the activating transcription mark histone 3 lysine 27 acetylation (H3K27Ac). Accordingly, HDAC7 stabilization diminished transcriptional induction of cytokine genes upon restimulation. Inhibition of this pathway during differentiation produced effector T cells epigenetically poised for enhanced cytokine recall. This work identifies a previously unrecognized target for enhancing effector T cell functionality.
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Affiliation(s)
- Rachel S. Helms
- The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Sidney-Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Alberto Marin-Gonzalez
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
| | - Chirag H. Patel
- The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Sidney-Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Calico Life Sciences LLC, South San Francisco, CA, USA
| | - Im-Hong Sun
- The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Sidney-Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Department of Surgery, University of California San Francisco, San Francisco, CA, USA
| | - Jiayu Wen
- The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Sidney-Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Robert D. Leone
- The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Sidney-Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | | | - Run-Duo Gao
- Johns Hopkins Drug Discovery, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Taekjip Ha
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA, USA
- Howard Hughes Medical Institute, Boston, MA, USA
| | - Takashi Tsukamoto
- Johns Hopkins Drug Discovery, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Barbara S. Slusher
- Johns Hopkins Drug Discovery, Baltimore, MD, USA
- Department of Neurology, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Joel L. Pomerantz
- Department of Biological Chemistry, Institute for Cell Engineering, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- These authors contributed equally to this work
| | - Jonathan D. Powell
- The Bloomberg-Kimmel Institute for Cancer Immunotherapy, Sidney-Kimmel Comprehensive Cancer Center, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Calico Life Sciences LLC, South San Francisco, CA, USA
- These authors contributed equally to this work
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2
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Kikani CK. Metabolic "Sense Relay" in Stem Cells: A Short But Impactful Life of PAS Kinase Balancing Stem Cell Fates. Cells 2023; 12:1751. [PMID: 37443785 PMCID: PMC10340297 DOI: 10.3390/cells12131751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Tissue regeneration is a complex molecular and biochemical symphony. Signaling pathways establish the rhythmic proliferation and differentiation cadence of participating cells to repair the damaged tissues and repopulate the tissue-resident stem cells. Sensory proteins form a critical bridge between the environment and cellular response machinery, enabling precise spatiotemporal control of stem cell fate. Of many sensory modules found in proteins from prokaryotes to mammals, Per-Arnt-Sim (PAS) domains are one of the most ancient and found in the most diverse physiological context. In metazoa, PAS domains are found in many transcription factors and ion channels; however, PAS domain-containing Kinase (PASK) is the only metazoan kinase where the PAS sensory domain is connected to a signaling kinase domain. PASK is predominantly expressed in undifferentiated, self-renewing embryonic and adult stem cells, and its expression is rapidly lost upon differentiation, resulting in its nearly complete absence from the adult mammalian tissues. Thus, PASK is expressed within a narrow but critical temporal window when stem cell fate is established. In this review, we discuss the emerging insight into the sensory and signaling functions of PASK as an integrator of metabolic and nutrient signaling information that serves to balance self-renewal and differentiation programs during mammalian tissue regeneration.
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Affiliation(s)
- Chintan K Kikani
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan Building, 675 Rose Street, Lexington, KY 40506, USA
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3
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Xiao M, Wu CH, Meek G, Kelly B, Castillo DB, Young LEA, Martire S, Dhungel S, McCauley E, Saha P, Dube AL, Gentry MS, Banaszynski LA, Sun RC, Kikani CK. PASK links cellular energy metabolism with a mitotic self-renewal network to establish differentiation competence. eLife 2023; 12:e81717. [PMID: 37052079 PMCID: PMC10162801 DOI: 10.7554/elife.81717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 04/11/2023] [Indexed: 04/14/2023] Open
Abstract
Quiescent stem cells are activated in response to a mechanical or chemical injury to their tissue niche. Activated cells rapidly generate a heterogeneous progenitor population that regenerates the damaged tissues. While the transcriptional cadence that generates heterogeneity is known, the metabolic pathways influencing the transcriptional machinery to establish a heterogeneous progenitor population remains unclear. Here, we describe a novel pathway downstream of mitochondrial glutamine metabolism that confers stem cell heterogeneity and establishes differentiation competence by countering post-mitotic self-renewal machinery. We discovered that mitochondrial glutamine metabolism induces CBP/EP300-dependent acetylation of stem cell-specific kinase, PAS domain-containing kinase (PASK), resulting in its release from cytoplasmic granules and subsequent nuclear migration. In the nucleus, PASK catalytically outcompetes mitotic WDR5-anaphase-promoting complex/cyclosome (APC/C) interaction resulting in the loss of post-mitotic Pax7 expression and exit from self-renewal. In concordance with these findings, genetic or pharmacological inhibition of PASK or glutamine metabolism upregulated Pax7 expression, reduced stem cell heterogeneity, and blocked myogenesis in vitro and muscle regeneration in mice. These results explain a mechanism whereby stem cells co-opt the proliferative functions of glutamine metabolism to generate transcriptional heterogeneity and establish differentiation competence by countering the mitotic self-renewal network via nuclear PASK.
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Affiliation(s)
- Michael Xiao
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
- Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD ProgramNew YorkUnited States
| | - Chia-Hua Wu
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
| | - Graham Meek
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
| | - Brian Kelly
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
| | - Dara Buendia Castillo
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
| | - Lyndsay EA Young
- Molecular and Cellular Biochemistry, College of Medicine, University of KentuckyLexingtonUnited States
| | - Sara Martire
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, Children’s Medical Center Research Institute, Department of Obstetrics & Gynecology, Hamon Center for Regenerative Science and Medicine at the University of Texas Southwestern Medical CenterDallasUnited States
| | - Sajina Dhungel
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
| | - Elizabeth McCauley
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
| | - Purbita Saha
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, Children’s Medical Center Research Institute, Department of Obstetrics & Gynecology, Hamon Center for Regenerative Science and Medicine at the University of Texas Southwestern Medical CenterDallasUnited States
| | - Altair L Dube
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, Children’s Medical Center Research Institute, Department of Obstetrics & Gynecology, Hamon Center for Regenerative Science and Medicine at the University of Texas Southwestern Medical CenterDallasUnited States
| | - Matthew S Gentry
- Molecular and Cellular Biochemistry, College of Medicine, University of KentuckyLexingtonUnited States
| | - Laura A Banaszynski
- Cecil H. and Ida Green Center for Reproductive Biology Sciences, Children’s Medical Center Research Institute, Department of Obstetrics & Gynecology, Hamon Center for Regenerative Science and Medicine at the University of Texas Southwestern Medical CenterDallasUnited States
| | - Ramon C Sun
- Molecular and Cellular Biochemistry, College of Medicine, University of KentuckyLexingtonUnited States
- Department of Neuroscience, College of Medicine, University of KentuckyLexingtonUnited States
| | - Chintan K Kikani
- Department of Biology, College of Arts and Sciences, University of Kentucky, Thomas Hunt Morgan BuildingLexingtonUnited States
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4
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Hinds TD, Kipp ZA, Xu M, Yiannikouris FB, Morris AJ, Stec DF, Wahli W, Stec DE. Adipose-Specific PPARα Knockout Mice Have Increased Lipogenesis by PASK-SREBP1 Signaling and a Polarity Shift to Inflammatory Macrophages in White Adipose Tissue. Cells 2021; 11:4. [PMID: 35011564 PMCID: PMC8750478 DOI: 10.3390/cells11010004] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 12/16/2022] Open
Abstract
The nuclear receptor PPARα is associated with reducing adiposity, especially in the liver, where it transactivates genes for β-oxidation. Contrarily, the function of PPARα in extrahepatic tissues is less known. Therefore, we established the first adipose-specific PPARα knockout (PparaFatKO) mice to determine the signaling position of PPARα in adipose tissue expansion that occurs during the development of obesity. To assess the function of PPARα in adiposity, female and male mice were placed on a high-fat diet (HFD) or normal chow for 30 weeks. Only the male PparaFatKO animals had significantly more adiposity in the inguinal white adipose tissue (iWAT) and brown adipose tissue (BAT) with HFD, compared to control littermates. No changes in adiposity were observed in female mice compared to control littermates. In the males, the loss of PPARα signaling in adipocytes caused significantly higher cholesterol esters, activation of the transcription factor sterol regulatory element-binding protein-1 (SREBP-1), and a shift in macrophage polarity from M2 to M1 macrophages. We found that the loss of adipocyte PPARα caused significantly higher expression of the Per-Arnt-Sim kinase (PASK), a kinase that activates SREBP-1. The hyperactivity of the PASK-SREBP-1 axis significantly increased the lipogenesis proteins fatty acid synthase (FAS) and stearoyl-Coenzyme A desaturase 1 (SCD1) and raised the expression of genes for cholesterol metabolism (Scarb1, Abcg1, and Abca1). The loss of adipocyte PPARα increased Nos2 in the males, an M1 macrophage marker indicating that the population of macrophages had changed to proinflammatory. Our results demonstrate the first adipose-specific actions for PPARα in protecting against lipogenesis, inflammation, and cholesterol ester accumulation that leads to adipocyte tissue expansion in obesity.
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Affiliation(s)
- Terry D. Hinds
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40508, USA; (Z.A.K.); (M.X.); (F.B.Y.)
- Barnstable Brown Diabetes Center, University of Kentucky, Lexington, KY 40508, USA
- Markey Cancer Center, University of Kentucky, Lexington, KY 40508, USA
| | - Zachary A. Kipp
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40508, USA; (Z.A.K.); (M.X.); (F.B.Y.)
| | - Mei Xu
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40508, USA; (Z.A.K.); (M.X.); (F.B.Y.)
| | - Frederique B. Yiannikouris
- Department of Pharmacology and Nutritional Sciences, University of Kentucky, Lexington, KY 40508, USA; (Z.A.K.); (M.X.); (F.B.Y.)
- Barnstable Brown Diabetes Center, University of Kentucky, Lexington, KY 40508, USA
| | - Andrew J. Morris
- Division of Cardiovascular Medicine, College of Medicine, University of Kentucky, Lexington, KY 40508, USA;
- Lexington Veterans Affairs Medical Center, Lexington, KY 40508, USA
| | - Donald F. Stec
- Small Molecule NMR Facility Core, Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, TN 37235, USA;
| | - Walter Wahli
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, Clinical Sciences Building, Singapore 308232, Singapore;
- Toxalim Research Center in Food Toxicology (UMR 1331), INRAE, ENVT, INP—PURPAN, UPS, Université de Toulouse, F-31300 Toulouse, France
- Center for Integrative Genomics, Université de Lausanne, Le Génopode, CH-1015 Lausanne, Switzerland
| | - David E. Stec
- Department of Physiology & Biophysics, Cardiorenal and Metabolic Diseases Research Center, University of Mississippi Medical Center, Jackson, MS 39216, USA
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5
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Hurtado-Carneiro V, Dongil P, Pérez-García A, Álvarez E, Sanz C. Preventing Oxidative Stress in the Liver: An Opportunity for GLP-1 and/or PASK. Antioxidants (Basel) 2021; 10:antiox10122028. [PMID: 34943132 PMCID: PMC8698360 DOI: 10.3390/antiox10122028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/14/2021] [Accepted: 12/15/2021] [Indexed: 02/07/2023] Open
Abstract
The liver’s high metabolic activity and detoxification functions generate reactive oxygen species, mainly through oxidative phosphorylation in the mitochondria of hepatocytes. In contrast, it also has a potent antioxidant mechanism for counterbalancing the oxidant’s effect and relieving oxidative stress. PAS kinase (PASK) is a serine/threonine kinase containing an N-terminal Per-Arnt-Sim (PAS) domain, able to detect redox state. During fasting/feeding changes, PASK regulates the expression and activation of critical liver proteins involved in carbohydrate and lipid metabolism and mitochondrial biogenesis. Interestingly, the functional inactivation of PASK prevents the development of a high-fat diet (HFD)-induced obesity and diabetes. In addition, PASK deficiency alters the activity of other nutrient sensors, such as the AMP-activated protein kinase (AMPK) and the mammalian target of rapamycin (mTOR). In addition to the expression and subcellular localization of nicotinamide-dependent histone deacetylases (SIRTs). This review focuses on the relationship between oxidative stress, PASK, and other nutrient sensors, updating the limited knowledge on the role of PASK in the antioxidant response. We also comment on glucagon-like peptide 1 (GLP-1) and its collaboration with PASK in preventing the damage associated with hepatic oxidative stress. The current knowledge would suggest that PASK inhibition and/or exendin-4 treatment, especially under fasting conditions, could ameliorate disorders associated with excess oxidative stress.
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Affiliation(s)
- Verónica Hurtado-Carneiro
- Department of Physiology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain; (P.D.); (A.P.-G.); (E.Á.)
- Correspondence:
| | - Pilar Dongil
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain; (P.D.); (A.P.-G.); (E.Á.)
- Department of Cell Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain;
| | - Ana Pérez-García
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain; (P.D.); (A.P.-G.); (E.Á.)
- Department of Cell Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain;
| | - Elvira Álvarez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain; (P.D.); (A.P.-G.); (E.Á.)
| | - Carmen Sanz
- Department of Cell Biology, Faculty of Medicine, Institute of Medical Research at the San Carlos Clinic Hospital (IdISSC), Complutense University of Madrid, Ciudad Universitaria, 28040 Madrid, Spain;
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6
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Xiao PT, Xie ZS, Kuang YJ, Liu SY, Zeng C, Li P, Liu EH. Discovery of a potent FKBP38 agonist that ameliorates HFD-induced hyperlipidemia via mTOR/P70S6K/SREBPs pathway. Acta Pharm Sin B 2021; 11:3542-52. [PMID: 34900535 DOI: 10.1016/j.apsb.2021.03.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/29/2021] [Accepted: 02/10/2021] [Indexed: 01/07/2023] Open
Abstract
The mammalian target of rapamycin (mTOR)-sterol regulatory element-binding proteins (SREBPs) signaling promotes lipogenesis. However, mTOR inhibitors also displayed a significant side effect of hyperlipidemia. Thus, it is essential to develop mTOR-specific inhibitors to inhibit lipogenesis. Here, we screened the endogenous inhibitors of mTOR, and identified that FKBP38 as a vital regulator of lipid metabolism. FKBP38 decreased the lipid content in vitro and in vivo via suppression of the mTOR/P70S6K/SREBPs pathway. 3,5,6,7,8,3ʹ,4ʹ-Heptamethoxyflavone (HMF), a citrus flavonoid, was found to target FKBP38 to suppress the mTOR/P70S6K/SREBPs pathway, reduce lipid level, and potently ameliorate hyperlipidemia and insulin resistance in high fat diet (HFD)-fed mice. Our findings suggest that pharmacological intervention by targeting FKBP38 to suppress mTOR/P70S6K/SREBPs pathway is a potential therapeutic strategy for hyperlipidemia, and HMF could be a leading compound for development of anti-hyperlipidemia drugs.
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7
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Khatun M, Meltsov A, Lavogina D, Loid M, Kask K, Arffman RK, Rossi HR, Lättekivi F, Jääger K, Krjutškov K, Rinken A, Salumets A, Piltonen TT. Decidualized endometrial stromal cells present with altered androgen response in PCOS. Sci Rep 2021; 11:16287. [PMID: 34381107 PMCID: PMC8357821 DOI: 10.1038/s41598-021-95705-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/23/2021] [Indexed: 01/27/2023] Open
Abstract
Hyperandrogenic women with PCOS show disrupted decidualization (DE) and placentation. Dihydrotestosterone (DHT) is reported to enhance DE in non-PCOS endometrial stromal cells (eSCCtrl); however, this has not been assessed in PCOS cells (eSCPCOS). Therefore, we studied the transcriptome profile of non-decidualized (non-DE) and DE eSCs from women with PCOS and Ctrl in response to short-term estradiol (E2) and/or progesterone (P4) exposure with/without (±) DHT. The non-DE eSCs were subjected to E2 ± DHT treatment, whereas the DE (0.5 mM 8-Br-cAMP, 96 h) eSCs were post-treated with E2 and P4 ± DHT, and RNA-sequenced. Validation was performed by immunofluorescence and immunohistochemistry. The results showed that, regardless of treatment, the PCOS and Ctrl samples clustered separately. The comparison of DE vs. non-DE eSCPCOS without DHT revealed PCOS-specific differentially expressed genes (DEGs) involved in mitochondrial function and progesterone signaling. When further adding DHT, we detected altered responses for lysophosphatidic acid (LPA), inflammation, and androgen signaling. Overall, the results highlight an underlying defect in decidualized eSCPCOS, present with or without DHT exposure, and possibly linked to the altered pregnancy outcomes. We also report novel factors which elucidate the mechanisms of endometrial dysfunction in PCOS.
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Affiliation(s)
- Masuma Khatun
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Alvin Meltsov
- Competence Centre on Health Technologies, Tartu, Estonia.,Department of Computer Science, University of Tartu, Tartu, Estonia
| | - Darja Lavogina
- Competence Centre on Health Technologies, Tartu, Estonia.,Institute of Chemistry, University of Tartu, Tartu, Estonia
| | - Marina Loid
- Competence Centre on Health Technologies, Tartu, Estonia.,Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Keiu Kask
- Competence Centre on Health Technologies, Tartu, Estonia.,Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Riikka K Arffman
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Henna-Riikka Rossi
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland
| | - Freddy Lättekivi
- Department of Pathophysiology, Institute of Biomedicine and Translational Medicine, University of Tartu, Tartu, Estonia.,Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Tartu, Estonia
| | - Kersti Jääger
- Competence Centre on Health Technologies, Tartu, Estonia
| | - Kaarel Krjutškov
- Competence Centre on Health Technologies, Tartu, Estonia.,Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia
| | - Ago Rinken
- Institute of Chemistry, University of Tartu, Tartu, Estonia
| | - Andres Salumets
- Competence Centre on Health Technologies, Tartu, Estonia.,Department of Obstetrics and Gynaecology, Institute of Clinical Medicine, University of Tartu, Tartu, Estonia.,Division of Obstetrics and Gynaecology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
| | - Terhi T Piltonen
- Department of Obstetrics and Gynaecology, PEDEGO Research Unit, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland.
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8
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Scoles DR, Dansithong W, Pflieger LT, Paul S, Gandelman M, Figueroa KP, Rigo F, Bennett CF, Pulst SM. ALS-associated genes in SCA2 mouse spinal cord transcriptomes. Hum Mol Genet 2021; 29:1658-1672. [PMID: 32307524 PMCID: PMC7322574 DOI: 10.1093/hmg/ddaa072] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2020] [Revised: 04/07/2020] [Accepted: 04/09/2020] [Indexed: 12/12/2022] Open
Abstract
The spinocerebellar ataxia type 2 (SCA2) gene ATXN2 has a prominent role in the pathogenesis and treatment of amyotrophic lateral sclerosis (ALS). In addition to cerebellar ataxia, motor neuron disease is often seen in SCA2, and ATXN2 CAG repeat expansions in the long normal range increase ALS risk. Also, lowering ATXN2 expression in TDP-43 ALS mice prolongs their survival. Here we investigated the ATXN2 relationship with motor neuron dysfunction in vivo by comparing spinal cord (SC) transcriptomes reported from TDP-43 and SOD1 ALS mice and ALS patients with those from SCA2 mice. SC transcriptomes were determined using an SCA2 bacterial artificial chromosome mouse model expressing polyglutamine expanded ATXN2. SCA2 cerebellar transcriptomes were also determined, and we also investigated the modification of gene expression following treatment of SCA2 mice with an antisense oligonucleotide (ASO) lowering ATXN2 expression. Differentially expressed genes (DEGs) defined three interconnected pathways (innate immunity, fatty acid biosynthesis and cholesterol biosynthesis) in separate modules identified by weighted gene co-expression network analysis. Other key pathways included the complement system and lysosome/phagosome pathways. Of all DEGs in SC, 12.6% were also dysregulated in the cerebellum. Treatment of mice with an ATXN2 ASO also modified innate immunity, the complement system and lysosome/phagosome pathways. This study provides new insights into the underlying molecular basis of SCA2 SC phenotypes and demonstrates annotated pathways shared with TDP-43 and SOD1 ALS mice and ALS patients. It also emphasizes the importance of ATXN2 in motor neuron degeneration and confirms ATXN2 as a therapeutic target.
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Affiliation(s)
- Daniel R Scoles
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA
| | - Warunee Dansithong
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA
| | - Lance T Pflieger
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA.,Department of Biomedical Informatics, University of Utah, 421 Wakara Way, Salt Lake City, UT 84108, USA
| | - Sharan Paul
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA
| | - Mandi Gandelman
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA
| | - Karla P Figueroa
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA
| | - Frank Rigo
- Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, CA 92010, USA
| | - C Frank Bennett
- Ionis Pharmaceuticals, 2855 Gazelle Court, Carlsbad, CA 92010, USA
| | - Stefan M Pulst
- Department of Neurology, University of Utah, 175 North Medical Drive East, 5th Floor, Salt Lake City, UT 84132, USA
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9
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Pérez-García A, Hurtado-Carneiro V, Herrero-De-Dios C, Dongil P, García-Mauriño JE, Sánchez MD, Sanz C, Álvarez E. Storage and Utilization of Glycogen by Mouse Liver during Adaptation to Nutritional Changes Are GLP-1 and PASK Dependent. Nutrients 2021; 13:2552. [PMID: 34444712 DOI: 10.3390/nu13082552] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/22/2021] [Accepted: 07/23/2021] [Indexed: 12/25/2022] Open
Abstract
Glucagon-like peptide 1 (GLP-1) and PAS kinase (PASK) control glucose and energy homeostasis according to nutritional status. Thus, both glucose availability and GLP-1 lead to hepatic glycogen synthesis or degradation. We used a murine model to discover whether PASK mediates the effect of exendin-4 (GLP-1 analogue) in the adaptation of hepatic glycogen metabolism to nutritional status. The results indicate that both exendin-4 and fasting block the Pask expression, and PASK deficiency disrupts the physiological levels of blood GLP1 and the expression of hepatic GLP1 receptors after fasting. Under a non-fasted state, exendin-4 treatment blocks AKT activation, whereby Glucokinase and Sterol Regulatory Element-Binding Protein-1c (Srebp1c) expressions were inhibited. Furthermore, the expression of certain lipogenic genes was impaired, while increasing Glucose Transporter 2 (GLUT2) and Glycogen Synthase (GYS). Moreover, exendin-4 treatment under fasted conditions avoided Glucose 6-Phosphatase (G6pase) expression, while maintaining high GYS and its activation state. These results lead to an abnormal glycogen accumulation in the liver under fasting, both in PASK-deficient mice and in exendin-4 treated wild-type mice. In short, exendin-4 and PASK both regulate glucose transport and glycogen storage, and some of the exendin-4 effects could therefore be due to the blocking of the Pask expression.
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10
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Franson JJ, Grose JH, Larson KW, Bridgewater LC. Gut Microbiota Regulates the Interaction between Diet and Genetics to Influence Glucose Tolerance. Medicines (Basel) 2021; 8:medicines8070034. [PMID: 34357150 PMCID: PMC8304968 DOI: 10.3390/medicines8070034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/15/2021] [Accepted: 06/24/2021] [Indexed: 01/04/2023]
Abstract
Background: Metabolic phenotypes are the result of an intricate interplay between multiple factors, including diet, genotype, and the gut microbiome. Per-Arnt-Sim (PAS) kinase is a nutrient-sensing serine/threonine kinase, whose absence (PASK-/-) protects against triglyceride accumulation, insulin resistance, and weight gain on a high-fat diet; conditions that are associated with dysbiosis of the gut microbiome. Methods: Herein, we report the metabolic effects of the interplay of diet (high fat high sugar, HFHS), genotype (PASK-/-), and microbiome (16S sequencing). Results: Microbiome analysis identified a diet-induced, genotype-independent forked shift, with two discrete clusters of HFHS mice having increased beta and decreased alpha diversity. A "lower" cluster contained elevated levels of Firmicutes, Bacteroidetes, Actinobacteria, Proteobacteria and Defferibacteres, and was associated with increased weight gain, glucose intolerance, triglyceride accumulation, and decreased claudin-1 expression. Genotypic effects were observed within the clusters, lower cluster PASK-/- mice displayed increased weight gain and decreased triglyceride accumulation, whereas upper PASK-/- were resistant to decreased claudin-1. Conclusions: These results confirm previous reports that PAS kinase deficiency can protect mice against the deleterious effects of diet, and they suggest that microbiome imbalances can override protection. In addition, these results support a healthy diet for beneficial microbiome maintenance and suggest microbial culprits associated with metabolic disease.
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Esquejo RM, Roqueta-Rivera M, Shao W, Phelan PE, Seneviratne U, Am Ende CW, Hershberger PM, Machamer CE, Espenshade PJ, Osborne TF. Dipyridamole Inhibits Lipogenic Gene Expression by Retaining SCAP-SREBP in the Endoplasmic Reticulum. Cell Chem Biol 2021; 28:169-179.e7. [PMID: 33096051 DOI: 10.1016/j.chembiol.2020.10.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/10/2020] [Accepted: 10/05/2020] [Indexed: 12/21/2022]
Abstract
Sterol regulatory element-binding proteins (SREBPs) are master transcriptional regulators of the mevalonate pathway and lipid metabolism and represent an attractive therapeutic target for lipid metabolic disorders. SREBPs are maintained in the endoplasmic reticulum (ER) in a tripartite complex with SREBP cleavage-activating protein (SCAP) and insulin-induced gene protein (INSIG). When new lipid synthesis is required, the SCAP-SREBP complex dissociates from INSIG and undergoes ER-to-Golgi transport where the N-terminal transcription factor domain is released by proteolysis. The mature transcription factor translocates to the nucleus and stimulates expression of the SREBP gene program. Previous studies showed that dipyridamole, a clinically prescribed phosphodiesterase (PDE) inhibitor, potentiated statin-induced tumor growth inhibition. Dipyridamole limited nuclear accumulation of SREBP, but the mechanism was not well resolved. In this study, we show that dipyridamole selectively blocks ER-to-Golgi movement of the SCAP-SREBP complex and that this is independent of its PDE inhibitory activity.
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12
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Swiatek W, Parnell KM, Nickols GA, Scharschmidt BF, Rutter J. Validation of PAS Kinase, a Regulator of Hepatic Fatty Acid and Triglyceride Synthesis, as a Therapeutic Target for Nonalcoholic Steatohepatitis. Hepatol Commun 2020; 4:696-707. [PMID: 32363320 PMCID: PMC7193131 DOI: 10.1002/hep4.1498] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/12/2020] [Accepted: 02/15/2020] [Indexed: 12/29/2022] Open
Abstract
Hyperactivation of sterol regulatory element binding protein 1c (SREBP‐1c), which transcriptionally induces expression of enzymes responsible for de novo lipogenesis and triglyceride (TG) formation, is implicated in nonalcoholic fatty liver disease (NAFLD)/nonalcoholic steatohepatitis (NASH) pathogenesis. Posttranslational SREBP‐1c maturation and activation is stimulated by the protein per–arnt–sim kinase (PASK). PASK‐knockout mice are phenotypically normal on a conventional diet but exhibit decreased hypertriglyceridemia, insulin resistance, and hepatic steatosis on a high‐fat diet. We investigated the effects of pharmacologic PASK inhibition using BioE‐1115, a selective and potent oral PASK inhibitor, in Zucker fatty (fa)/fa) rats, a genetic model of obesity, dyslipidemia, and insulin resistance, and in a dietary murine model of NAFLD/NASH. Female Zucker (fa/fa) rats and lean littermate (fa/+) controls received BioE‐1115 (3‐100 mg/kg/day) and/or omega‐3 fatty acids, and blood glucose, hemoglobin A1c, glucose tolerance, insulin, and serum TG were measured. C57BL/6J mice fed a high‐fat/high‐fructose diet (HF‐HFrD) were treated with BioE‐1115 (100 mg/kg/day) or vehicle. Body weight and fasting glucose were measured regularly; serum TG, body and organ weights, and liver TG and histology were assessed at sacrifice. Messenger RNA (mRNA) abundance of SREBP‐1c target genes was measured in both models. In Zucker rats, BioE‐1115 treatment produced significant dose‐dependent reductions in blood glucose, insulin, and TG (all greater than omega‐3 fatty acids) and dose dependently restored insulin sensitivity assessed by glucose tolerance testing. In HF‐HFrD mice, BioE‐1115 reduced body weight, liver weight, fasting blood glucose, serum TGs, hepatic TG, hepatic fibrosis, hepatocyte vacuolization, and bile duct hyperplasia. BioE‐1115 reduced SREBP‐1c target mRNA transcripts in both models. Conclusion: PASK inhibition mitigates many adverse metabolic consequences associated with an HF‐HFrD and reduces hepatic fat content and fibrosis. This suggests that inhibition of PASK is an attractive therapeutic strategy for NAFLD/NASH treatment.
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Affiliation(s)
- Wojciech Swiatek
- Department of Biochemistry University of Utah School of Medicine University of Utah Salt Lake City UT
| | | | | | | | - Jared Rutter
- Department of Biochemistry University of Utah School of Medicine University of Utah Salt Lake City UT.,Howard Hughes Medical Institute Salt Lake City UT
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Dorotea D, Koya D, Ha H. Recent Insights Into SREBP as a Direct Mediator of Kidney Fibrosis via Lipid-Independent Pathways. Front Pharmacol 2020; 11:265. [PMID: 32256356 PMCID: PMC7092724 DOI: 10.3389/fphar.2020.00265] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 02/24/2020] [Indexed: 12/17/2022] Open
Abstract
Sterol regulatory-element binding proteins (SREBPs) are classical regulators of cellular lipid metabolism in the kidney and other tissues. SREBPs are currently recognized as versatile transcription factors involved in a myriad of cellular processes. Meanwhile, SREBPs have been recognized to mediate lipotoxicity, contributing to the progression of kidney diseases. SREBP1 has been shown to bind to the promoter region of TGFβ, a major pro-fibrotic signaling mechanism in the kidney. Conversely, TGFβ activates SREBP1 transcriptional activity suggesting a positive feedback loop of SREBP1 in TGFβ signaling. Public ChIP-seq data revealed numerous non-lipid transcriptional targets of SREBPs that plausibly play roles in progressive kidney disease and fibrosis. This review provides new insights into SREBP as a mediator of kidney fibrosis via lipid-independent pathways.
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Affiliation(s)
- Debra Dorotea
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, South Korea
| | - Daisuke Koya
- Department of Internal Medicine, Kanazawa Medical University, Ishikawa, Japan
| | - Hunjoo Ha
- Graduate School of Pharmaceutical Sciences, College of Pharmacy, Ewha Womans University, Seoul, South Korea
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14
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Dongil P, Pérez-García A, Hurtado-Carneiro V, Herrero-de-Dios C, Álvarez E, Sanz C. PAS kinase deficiency reduces aging effects in mice. Aging (Albany NY) 2020; 12:2275-301. [PMID: 31974316 DOI: 10.18632/aging.102745] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Accepted: 01/07/2020] [Indexed: 12/23/2022]
Abstract
Several signaling pathways may be affected during aging. All are regulated by nutrient levels leading to a decline in mitochondrial function and autophagy and to an increase in oxidative stress. PAS Domain Kinase (PASK) is a nutrient and bioenergetic sensor. We have previously found that PASK plays a role in the control of hepatic metabolic balance and mitochondrial homeostasis. To investigate PASK’s role in hepatic oxidative stress during aging, we analyzed the mitochondrial function, glucose tolerance, insulin resistance, and lipid-related parameters in aged PASK-deficient mice. Hepatic Pask mRNA decreased in step with aging, being undetectable in aged wild-type (WT) mice. Aged PASK-deficient mice recorded lower levels of ROS/RNS compared to aged WT. The regulators of mitochondrial biogenesis, PGC1a, SIRT1 and NRF2, decreased in aged WT, while aged PASK-deficient mice recorded a higher expression of NRF2, GCLm and HO1 proteins and CS activity under fasted conditions. Additionally, aged PASK-deficient mice recorded an overexpression of the longevity gene FoxO3a, and maintained elevated PCNA protein, suggesting that hepatic cell repair mechanisms might be functional. PASK-deficient mice have better insulin sensitivity and no glucose intolerance, as confirmed by a normal HOMA-IR index. PASK may be a good target for reducing damage during aging.
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15
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Hurtado-Carneiro V, Pérez-García A, Alvarez E, Sanz C. PAS Kinase: A Nutrient and Energy Sensor "Master Key" in the Response to Fasting/Feeding Conditions. Front Endocrinol (Lausanne) 2020; 11:594053. [PMID: 33391184 PMCID: PMC7775648 DOI: 10.3389/fendo.2020.594053] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 11/18/2020] [Indexed: 12/24/2022] Open
Abstract
The protein kinase with PAS domains (PASK) is a nutrient and energy sensor located in the cells of multiple organs. Many of the recent findings for understanding PASK functions in mammals have been reported in studies involving PASK-deficient mice. This minireview summarizes the PASK role in the control of fasting and feeding responses, focusing especially on the hypothalamus and liver. In 2013, PASK was identified in the hypothalamic areas involved in feeding behavior, and its expression was regulated under fasting/refeeding conditions. Furthermore, it plays a role in coordinating the activation/inactivation of the hypothalamic energy sensors AMPK and mTOR/S6K1 pathways in response to fasting. On the other hand, PASK deficiency prevents the development of obesity and non-alcoholic fatty liver in mice fed with a high-fat diet. This protection is explained by the re-establishment of several high-fat diet metabolic alterations produced in the expression of hepatic transcription factors and key enzymes that control the main metabolic pathways involved in maintaining metabolic homeostasis in fasting/feeding responses. This minireview covers the effects of PASK inactivation in the expression of certain transcription factors and target enzymes in several metabolic pathways under situations such as fasting and feeding with either a standard or a high-fat diet.
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Affiliation(s)
- Verónica Hurtado-Carneiro
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, Madrid, Spain
- Department of Physiology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
- *Correspondence: Verónica Hurtado-Carneiro,
| | - Ana Pérez-García
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, Madrid, Spain
| | - Elvira Alvarez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, Madrid, Spain
| | - Carmen Sanz
- Department of Cell Biology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
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16
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Karakkat JV, Kaimala S, Sreedharan SP, Jayaprakash P, Adeghate EA, Ansari SA, Guccione E, Mensah-Brown EPK, Starling Emerald B. The metabolic sensor PASK is a histone 3 kinase that also regulates H3K4 methylation by associating with H3K4 MLL2 methyltransferase complex. Nucleic Acids Res 2019; 47:10086-10103. [PMID: 31529049 PMCID: PMC6821284 DOI: 10.1093/nar/gkz786] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 09/02/2019] [Accepted: 09/04/2019] [Indexed: 12/19/2022] Open
Abstract
The metabolic sensor Per-Arnt-Sim (Pas) domain-containing serine/threonine kinase (PASK) is expressed predominantly in the cytoplasm of different cell types, although a small percentage is also expressed in the nucleus. Herein, we show that the nuclear PASK associates with the mammalian H3K4 MLL2 methyltransferase complex and enhances H3K4 di- and tri-methylation. We also show that PASK is a histone kinase that phosphorylates H3 at T3, T6, S10 and T11. Taken together, these results suggest that PASK regulates two different H3 tail modifications involving H3K4 methylation and H3 phosphorylation. Using muscle satellite cell differentiation and functional analysis after loss or gain of Pask expression using the CRISPR/Cas9 system, we provide evidence that some of the regulatory functions of PASK during development and differentiation may occur through the regulation of these histone modifications.
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Affiliation(s)
- Jimsheena V Karakkat
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Suneesh Kaimala
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Sreejisha P Sreedharan
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Princy Jayaprakash
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Ernest A Adeghate
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Suraiya A Ansari
- Department of Biochemistry, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Ernesto Guccione
- Institute of Molecular and Cell Biology, Agency for Science, Technology and Research (A*STAR), 138673, Singapore
| | - Eric P K Mensah-Brown
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
| | - Bright Starling Emerald
- Department of Anatomy, College of Medicine and Health Sciences, United Arab Emirates University, PO Box 17666, Al Ain, Abu Dhabi, UAE
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Raghow R, Dong Q, Elam MB. Phosphorylation dependent proteostasis of sterol regulatory element binding proteins. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1145-1156. [DOI: 10.1016/j.bbalip.2019.04.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 02/19/2019] [Accepted: 04/28/2019] [Indexed: 12/17/2022]
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18
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Kikani CK, Wu X, Fogarty S, Kang SAW, Dephoure N, Gygi SP, Sabatini DM, Rutter J. Activation of PASK by mTORC1 is required for the onset of the terminal differentiation program. Proc Natl Acad Sci U S A 2019; 116:10382-10391. [PMID: 31072927 PMCID: PMC6534978 DOI: 10.1073/pnas.1804013116] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
During skeletal muscle regeneration, muscle stem cells (MuSCs) respond to multiple signaling inputs that converge onto mammalian target of rapamycin complex 1 (mTORC1) signaling pathways. mTOR function is essential for establishment of the differentiation-committed progenitors (early stage of differentiation, marked by the induction of myogenin expression), myotube fusion, and, ultimately, hypertrophy (later stage of differentiation). While a major mTORC1 substrate, p70S6K, is required for myotube fusion and hypertrophy, an mTORC1 effector for the induction of myogenin expression remains unclear. Here, we identified Per-Arnt-Sim domain kinase (PASK) as a downstream phosphorylation target of mTORC1 in MuSCs during differentiation. We have recently shown that the PASK phosphorylates Wdr5 to stimulate MuSC differentiation by epigenetically activating the myogenin promoter. We show that phosphorylation of PASK by mTORC1 is required for the activation of myogenin transcription, exit from self-renewal, and induction of the myogenesis program. Our studies reveal that mTORC1-PASK signaling is required for the rise of myogenin-positive committed myoblasts (early stage of myogenesis), whereas mTORC1-S6K signaling is required for myoblast fusion (later stage of myogenesis). Thus, our discoveries allow molecular dissection of mTOR functions during different stages of the myogenesis program driven by two different substrates.
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Affiliation(s)
- Chintan K Kikani
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84132;
| | - Xiaoying Wu
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84132
| | - Sarah Fogarty
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84132
| | - Seong Anthony Woo Kang
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Noah Dephoure
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - Steven P Gygi
- Department of Cell Biology, Harvard Medical School, Boston, MA 02115
| | - David M Sabatini
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142
- Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02139
- Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02142
- Broad Institute of Harvard and MIT, Cambridge, MA 02142
| | - Jared Rutter
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, UT 84132;
- Howard Hughes Medical Institute, University of Utah School of Medicine, Salt Lake City, UT 84132
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Mu W, Cheng XF, Liu Y, Lv QZ, Liu GL, Zhang JG, Li XY. Potential Nexus of Non-alcoholic Fatty Liver Disease and Type 2 Diabetes Mellitus: Insulin Resistance Between Hepatic and Peripheral Tissues. Front Pharmacol 2019; 9:1566. [PMID: 30692925 PMCID: PMC6339917 DOI: 10.3389/fphar.2018.01566] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 12/24/2018] [Indexed: 12/21/2022] Open
Abstract
The liver is the central metabolic organ and plays a pivotal role in regulating homeostasis of glucose and lipid metabolism. Aberrant liver metabolism promotes insulin resistance, which is reported to be a common characteristic of metabolic diseases such as non-alcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM). There is a complex and bidirectional relationship between NAFLD and T2DM. NAFLD patients with hepatic insulin resistance generally share a high risk of impaired fasting glucose associated with early diabetes; most patients with T2DM experience non-alcoholic fatty liver (NAFL), non-alcoholic steatohepatitis (NASH), and other more severe liver complications such as cirrhosis and hepatocellular carcinoma (HCC). Additionally, hepatic insulin resistance, which is caused by diacylglycerol-mediated activation of protein kinase C epsilon (PKC𝜀), may be the critical pathological link between NAFLD and T2DM. Therefore, this review aims to illuminate current insights regarding the complex and strong association between NAFLD and T2DM and summarize novel and emerging targets for the treatment of hepatic insulin resistance based on established mechanistic knowledge.
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Affiliation(s)
- Wan Mu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xue-Fang Cheng
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Liu
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qian-Zhou Lv
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Gao-Lin Liu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ji-Gang Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Yu Li
- Department of Pharmacy, Zhongshan Hospital, Fudan University, Shanghai, China
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DeMille D, Pape JA, Bikman BT, Ghassemian M, Grose JH. The Regulation of Cbf1 by PAS Kinase Is a Pivotal Control Point for Lipogenesis vs. Respiration in Saccharomyces cerevisiae. G3 (Bethesda) 2019; 9:33-46. [PMID: 30381292 DOI: 10.1534/g3.118.200663] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
PAS kinase 1 (Psk1) is a key regulator of respiration in Saccharomyces cerevisiae. Herein the molecular mechanisms of this regulation are explored through the characterization of its substrate, Centromere binding factor 1 (Cbf1). CBF1-deficient yeast displayed a significant decrease in cellular respiration, while PAS kinase-deficient yeast, or yeast harboring a Cbf1 phosphosite mutant (T211A) displayed a significant increase. Transmission electron micrographs showed an increased number of mitochondria in PAS kinase-deficient yeast consistent with the increase in respiration. Although the CBF1-deficient yeast did not appear to have an altered number of mitochondria, a mitochondrial proteomics study revealed significant differences in the mitochondrial composition of CBF1-deficient yeast including altered Atp3 levels, a subunit of the mitochondrial F1-ATP synthase complex. Both beta-galactosidase reporter assays and western blot analysis confirmed direct transcriptional control of ATP3 by Cbf1. In addition, we confirmed the regulation of yeast lipid genes LAC1 and LAG1 by Cbf1. The human homolog of Cbf1, Upstream transcription factor 1 (USF1), is also known to be involved in lipid biogenesis. Herein, we provide the first evidence for a role of USF1 in respiration since it appeared to complement Cbf1in vivo as determined by respiration phenotypes. In addition, we confirmed USF1 as a substrate of human PAS kinase (hPASK) in vitro. Combined, our data supports a model in which Cbf1/USF1 functions to partition glucose toward respiration and away from lipid biogenesis, while PAS kinase inhibits respiration in part through the inhibition of Cbf1/USF1.
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Pape JA, Newey CR, Burrell HR, Workman A, Perry K, Bikman BT, Bridgewater LC, Grose JH. Per-Arnt-Sim Kinase (PASK) Deficiency Increases Cellular Respiration on a Standard Diet and Decreases Liver Triglyceride Accumulation on a Western High-Fat High-Sugar Diet. Nutrients 2018; 10:E1990. [PMID: 30558306 DOI: 10.3390/nu10121990] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/08/2018] [Accepted: 12/11/2018] [Indexed: 12/16/2022] Open
Abstract
Diabetes and the related disease metabolic syndrome are epidemic in the United States, in part due to a shift in diet and decrease in physical exercise. PAS kinase is a sensory protein kinase associated with many of the phenotypes of these diseases, including hepatic triglyceride accumulation and metabolic dysregulation in male mice placed on a high-fat diet. Herein we provide the first characterization of the effects of western diet (high-fat high-sugar, HFHS) on Per-Arnt-Sim kinase mice (PASK−/−) and the first characterization of both male and female PASK−/− mice. Soleus muscle from the PASK−/− male mice displayed a 2-fold higher oxidative phosphorylation capacity than wild type (WT) on the normal chow diet. PASK−/− male mice were also resistant to hepatic triglyceride accumulation on the HFHS diet, displaying a 2.7-fold reduction in hepatic triglycerides compared to WT mice on the HFHS diet. These effects on male hepatic triglyceride were further explored through mass spectrometry-based lipidomics. The absence of PAS kinase was found to affect many of the 44 triglycerides analyzed, preventing hepatic triglyceride accumulation in response to the HFHS diet. In contrast, the female mice showed resistance to hepatic triglyceride accumulation on the HFHS diet regardless of genotype, suggesting the effects of PAS kinase may be masked.
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22
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Song Z, Xiaoli AM, Yang F. Regulation and Metabolic Significance of De Novo Lipogenesis in Adipose Tissues. Nutrients 2018; 10:nu10101383. [PMID: 30274245 PMCID: PMC6213738 DOI: 10.3390/nu10101383] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/20/2018] [Accepted: 09/21/2018] [Indexed: 12/20/2022] Open
Abstract
De novo lipogenesis (DNL) is a complex and highly regulated process in which carbohydrates from circulation are converted into fatty acids that are then used for synthesizing either triglycerides or other lipid molecules. Dysregulation of DNL contributes to human diseases such as obesity, type 2 diabetes, and cardiovascular diseases. Thus, the lipogenic pathway may provide a new therapeutic opportunity for combating various pathological conditions that are associated with dysregulated lipid metabolism. Hepatic DNL has been well documented, but lipogenesis in adipocytes and its contribution to energy homeostasis and insulin sensitivity are less studied. Recent reports have gained significant insights into the signaling pathways that regulate lipogenic transcription factors and the role of DNL in adipose tissues. In this review, we will update the current knowledge of DNL in white and brown adipose tissues with the focus on transcriptional, post-translational, and central regulation of DNL. We will also summarize the recent findings of adipocyte DNL as a source of some signaling molecules that critically regulate energy metabolism.
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Affiliation(s)
- Ziyi Song
- Departments of Medicine and Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| | - Alus M Xiaoli
- Departments of Medicine and Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| | - Fajun Yang
- Departments of Medicine and Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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Dongil P, Pérez-García A, Hurtado-Carneiro V, Herrero-de-Dios C, Blazquez E, Alvarez E, Sanz C. Pas Kinase Deficiency Triggers Antioxidant Mechanisms in the Liver. Sci Rep 2018; 8:13810. [PMID: 30217996 DOI: 10.1038/s41598-018-32192-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 08/28/2018] [Indexed: 12/16/2022] Open
Abstract
Metabolic dysfunction in the liver is the cause of numerous pathologies, which are associated with an altered redox state. PASK (PAS Domain Kinase) is a nutrient and bioenergetic sensor. We contend that PASK could act as an oxidative stress sensor in liver and/or control the metabolic balance, playing a role in the mitochondrial homeostasis. Using PASK-deficient mice, we observed that PASK deficiency promotes antioxidant response mechanisms: a lower production of ROS/RNS under non-fasting conditions, overexpression of genes coding to ROS-detoxifying enzymes and mitochondrial fusion proteins (MnSod Gpx, Mfn1 and Opa1), coactivator Ppargc1a, transcription factors (Pparg and FoxO3a) and deacetylase Sirt1. Also, under fasting conditions, PASK deficiency induced the overexpression of Ppargc1a, Ppara, Pparg, FoxO3a and Nrf2 leading to the overexpression of genes coding to antioxidant enzymes such as MnSOD, Cu/ZnSOD, GPx, HO1 and GCLm. Additionally, inducing PINK1 involved in cell survival and mitophagy. These changes kept ROS steady levels and improved the regenerative state. We suggest a new role for PASK as a controller of oxidative stress and mitochondrial dynamics in the liver. In fact, antioxidant response is PASK dependent. PASK-targeting could therefore be a good way of reducing the oxidative stress in order to prevent or treat liver diseases.
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24
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Hou S, Jiao Y, Yuan Q, Zhai J, Tian T, Sun K, Chen Z, Wu Z, Zhang J. S100A4 protects mice from high-fat diet-induced obesity and inflammation. J Transl Med 2018; 98:1025-1038. [PMID: 29789685 DOI: 10.1038/s41374-018-0067-y] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2018] [Revised: 04/03/2018] [Accepted: 04/10/2018] [Indexed: 12/18/2022] Open
Abstract
As a member from S100 calcium-binding protein family, S100A4 is ubiquitous and elevated in tumor progression and metastasis, but its role in regulating obesity has not been well characterized. In this study, we showed that S100A4 was mainly expressed by stromal cells in adipose tissue and the S100A4 level in adipose tissue was decreased after high-fat diet (HFD). S100A4 deficient mice exhibited aggravated symptoms of obesity and suppressed insulin signaling after 12 weeks of HFD. Aggravated obesity in S100A4 deficient mice were found to be positively correlated with higher inflammatory status of the liver. Then, we found that extracellular S100A4 or overexpressed S100A4 inhibited adipogenesis and decreased mRNA levels of inflammation gene in 3T3-L1 adipocytes in vitro; whereas small interfering RNA (siRNA)-mediated suppression of S100A4 displayed the opposite results. Additionally, the protective effect induced by S100A4 during HFD-induced obesity was tightly related with activation of Akt signaling in adipose tissues, as well as livers and muscles. Taken together, we demonstrate that S100A4 is an inhibitory factor for obesity and attenuates the inflammatory reaction, while activating the Akt signaling, which suggest that S100A4 is a potential candidate for the treatment of diet-induced obesity and its complications.
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Affiliation(s)
- Shasha Hou
- The College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, P.R. China
| | - Ying Jiao
- The College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, P.R. China
| | - Qi Yuan
- The College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, P.R. China
| | - Junfeng Zhai
- The Chinese Academy of Inspection and Quarantine, Beijing, P. R. China
| | - Tian Tian
- The College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, P.R. China
| | - Kaiji Sun
- The State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, P. R. China
| | - Zhinan Chen
- The College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, P.R. China.,The Cell Engineering Research Center and Department of Cell Biology, State Key Laboratory of Cancer, Fourth Military Medical University, Xi'an, P. R. China
| | - Zhenlong Wu
- The State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, P. R. China
| | - Jinhua Zhang
- The College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, P.R. China.
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25
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Pérez-García A, Dongil P, Hurtado-Carneiro V, Blazquez E, Sanz C, Alvarez E. PAS Kinase deficiency alters the glucokinase function and hepatic metabolism. Sci Rep 2018; 8:11091. [PMID: 30038292 PMCID: PMC6056484 DOI: 10.1038/s41598-018-29234-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Accepted: 07/03/2018] [Indexed: 12/15/2022] Open
Abstract
The liver controls metabolic homeostasis in response to fasting and refeeding periods. Glucokinase (GCK) adjusts hepatic glucose phosphorylation to blood glucose levels, acting as a glucose sensor. Our objective was to determine whether PAS kinase (PASK), a nutrient sensor, could be affecting the expression or activity of liver GCK and the response to fasting and refeeding states of key hepatic metabolic pathways. PASK-deficient mice have impaired insulin signaling (AKT overactivation). Furthermore, PASK deficiency modified the expression of several transcription factors involved in the adjustment to fasting and refeeding. Foxo1 decreased under fasting conditions, while Ppara and Pparg were overexpressed in PASK-deficient mice. However, PEPCK protein levels were similar or higher, while the expression of Cpt1a decreased in PASK-deficient mice. By contrast, Lxra and Chrebp were overexpressed after refeeding, while the expression of Acc and Fas decreased in PASK-deficient mice. Likewise, with a decreased expression of Gck and increased nuclear location of the complex GCK-GCKR, GCK activity decreased in PASK-deficient mice. Therefore, PASK regulated some of the genes and proteins responsible for glucose sensing, such as glucokinase, and for insulin signalling, affecting glucose and lipid metabolism and consequently certain critical hepatic functions.
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Affiliation(s)
- A Pérez-García
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, s/n, 28040, Madrid, Spain.,Department of Cell Biology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - P Dongil
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, s/n, 28040, Madrid, Spain.,Department of Cell Biology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain
| | - V Hurtado-Carneiro
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, s/n, 28040, Madrid, Spain.,Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - E Blazquez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, s/n, 28040, Madrid, Spain.,Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
| | - C Sanz
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain. .,Department of Cell Biology, Faculty of Medicine, Complutense University of Madrid, Madrid, Spain.
| | - E Alvarez
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, Complutense University of Madrid, Institute of Medical Research at the Hospital Clínico San Carlos (IdISSC), Ciudad Universitaria, s/n, 28040, Madrid, Spain.,Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
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26
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Pérez-garcía A, Dongil P, Hurtado-carneiro V, Blázquez E, Sanz C, Álvarez E. High-fat diet alters PAS kinase regulation by fasting and feeding in liver. J Nutr Biochem 2018; 57:14-25. [DOI: 10.1016/j.jnutbio.2018.03.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/19/2018] [Accepted: 03/01/2018] [Indexed: 12/12/2022]
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27
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Zheng ZG, Zhou YP, Zhang X, Thu PM, Xie ZS, Lu C, Pang T, Xue B, Xu DQ, Chen Y, Chen XW, Li HJ, Xu X. Anhydroicaritin improves diet-induced obesity and hyperlipidemia and alleviates insulin resistance by suppressing SREBPs activation. Biochem Pharmacol 2016; 122:42-61. [PMID: 27816546 DOI: 10.1016/j.bcp.2016.10.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 10/31/2016] [Indexed: 11/24/2022]
Abstract
SREBPs play important roles in the regulation of lipid metabolism, and are closely related to the occurrence and development of many metabolic diseases. Small molecular inhibitors of SERBPs are important tools in developing efficient treatment of metabolic diseases. However, there are no listing drug targeting SREBPs. Therefore, there is an urgent need to develop highly specific small molecules that inhibit SREBPs. In this study, using a hepatocyte-based high-throughput screening, we identified anhydroicaritin (AHI) as a novel inhibitor of SREBPs. HepG2, HL-7702, and human primary hepatocytes were used to verify the effects of AHI. We explored the mechanism by which AHI blocks the binding of SCAP/SREBPs complex with Sec23α/24D via regulating LKB1/AMPK/mTOR pathway. AHI reduced liver cell lipid level by preventing de novo lipogenesis. In diet induced obese mice, AHI ameliorated obesity, insulin resistance, fatty accumulation in liver and hyperlipemia. In conclusion, AHI improves diet-induced obesity and alleviates insulin resistance by suppressing SREBPs maturation which is dependent on LKB1/AMPK/mTOR pathway. Thus, AHI can serve as a leading compound for pharmacological control of metabolic diseases.
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Affiliation(s)
- Zu-Guo Zheng
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Ya-Ping Zhou
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Xin Zhang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Pyone Myat Thu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Zhi-Shen Xie
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Chong Lu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Tao Pang
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China
| | - Bin Xue
- State Key Laboratory of Pharmaceutical Biotechnology and Jiangsu Key Laboratory of Molecular Medicine and School of Medicine, Nanjing University, 210093 Nanjing, Jiangsu, China
| | - Da-Qian Xu
- Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences, 200031 Shanghai, China
| | - Yan Chen
- Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences (SIBS), Chinese Academy of Sciences, 200031 Shanghai, China
| | - Xiao-Wei Chen
- Institute of Molecular Medicine, Peking University, 100871 Beijing, China
| | - Hui-Jun Li
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China.
| | - Xiaojun Xu
- State Key Laboratory of Natural Medicines, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China; Jiangsu Key Laboratory of Drug Discovery for Metabolic Diseases, China Pharmaceutical University, 210009 Nanjing, Jiangsu, China.
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28
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Kikani CK, Wu X, Paul L, Sabic H, Shen Z, Shakya A, Keefe A, Villanueva C, Kardon G, Graves B, Tantin D, Rutter J. Pask integrates hormonal signaling with histone modification via Wdr5 phosphorylation to drive myogenesis. eLife 2016; 5. [PMID: 27661449 PMCID: PMC5035144 DOI: 10.7554/elife.17985] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 09/08/2016] [Indexed: 01/08/2023] Open
Abstract
PAS domain containing protein kinase (Pask) is an evolutionarily conserved protein kinase implicated in energy homeostasis and metabolic regulation across eukaryotic species. We now describe an unexpected role of Pask in promoting the differentiation of myogenic progenitor cells, embryonic stem cells and adipogenic progenitor cells. This function of Pask is dependent upon its ability to phosphorylate Wdr5, a member of several protein complexes including those that catalyze histone H3 Lysine 4 trimethylation (H3K4me3) during transcriptional activation. Our findings suggest that, during myoblast differentiation, Pask stimulates the conversion of repressive H3K4me1 to activating H3K4me3 marks on the promoter of the differentiation gene myogenin (Myog) via Wdr5 phosphorylation. This enhances accessibility of the MyoD transcription factor and enables transcriptional activation of the Myog promoter to initiate muscle differentiation. Thus, as an upstream kinase of Wdr5, Pask integrates signaling cues with the transcriptional network to regulate the differentiation of progenitor cells. DOI:http://dx.doi.org/10.7554/eLife.17985.001
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Affiliation(s)
- Chintan K Kikani
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, United States
| | - Xiaoying Wu
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, United States
| | - Litty Paul
- Department of Oncological Sciences, University of Utah School of Medicine, Salt Lake City, United States.,Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, United States
| | - Hana Sabic
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, United States
| | - Zuolian Shen
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Arvind Shakya
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Alexandra Keefe
- Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, United States
| | - Claudio Villanueva
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, United States
| | - Gabrielle Kardon
- Department of Human Genetics, University of Utah School of Medicine, Salt Lake City, United States
| | - Barbara Graves
- Department of Oncological Sciences, University of Utah School of Medicine, Salt Lake City, United States.,Huntsman Cancer Institute, University of Utah School of Medicine, Salt Lake City, United States.,Howard Hughes Medical Institute, University of Utah School of Medicine, Salt Lake City, United States
| | - Dean Tantin
- Department of Pathology, University of Utah School of Medicine, Salt Lake City, United States
| | - Jared Rutter
- Department of Biochemistry, University of Utah School of Medicine, Salt Lake City, United States.,Howard Hughes Medical Institute, University of Utah School of Medicine, Salt Lake City, United States
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29
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Zhang DD, Zhang JG, Wu X, Liu Y, Gu SY, Zhu GH, Wang YZ, Liu GL, Li XY. Nuciferine downregulates Per-Arnt-Sim kinase expression during its alleviation of lipogenesis and inflammation on oleic acid-induced hepatic steatosis in HepG2 cells. Front Pharmacol 2015; 6:238. [PMID: 26539118 PMCID: PMC4612658 DOI: 10.3389/fphar.2015.00238] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Accepted: 10/02/2015] [Indexed: 12/26/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) is a prevalent liver disease associated with lipotoxicity, lipid peroxidation, oxidative stress, and inflammation. Nuciferine, an active ingredient extracted from the natural lotus leaf, has been reported to be effective for the prevention and treatment of NAFLD. Per-Arnt-Sim kinase (PASK) is a nutrient responsive protein kinase that regulates lipid and glucose metabolism, mitochondrial respiration, and gene expression. The aim of the present study was to investigate the protective effect of nuciferine against NAFLD and its inhibitory effect on PASK, exploring the possible underlying mechanism of nuciferine-mediated inhibition on NAFLD. Relevant biochemical parameters (lipid accumulation, extent of oxidative stress and release of inflammation cytokines) in oleic acid (OA)-induced HepG2 cells that mimicked steatosis in vitro were measured and compared with the control. It was found that nuciferine and silenced-PASK (siRNA PASK) both inhibited triglyceride (TG) accumulation and was effective in decreasing fatty acid (FFAs). The content of total antioxidant capacity (T-AOC) and superoxide dismutase (SOD) were increased respectively by nuciferine and siRNA PASK without increase in glutathione (GSH). Malondialdehyde (MDA) was decreased respectively by nuciferine and siRNA PASK. In addition, nuciferine decreased TNF-a, IL-6 and IL-8 as well as the siRNA PASK group. IL-10 was increased by nuciferine and siRNA PASK respectively. Further investigation revealed that nuciferine and siRNA PASK could respectively regulate the expression of target genes involved in lipogenesis and inflammation, suggesting that nuciferine may be a potential therapeutic treatment for NAFLD. Furthermore, the modulated effect of nuciferine on (OA)-induced HepG2 cells lipogenesis and inflammation, which was accompanied with PASK inhibition, was also consistent with siRNA PASK, implying that PASK might play a role in nuciferine-mediated regulation on NAFLD.
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Affiliation(s)
- Dan-Dan Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Ji-Gang Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Xin Wu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Ying Liu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Sheng-Ying Gu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Guan-Hua Zhu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Yu-Zhu Wang
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Gao-Lin Liu
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
| | - Xiao-Yu Li
- Department of Clinical Pharmacy, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine Shanghai, China
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30
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Zhang DD, Zhang JG, Wang YZ, Liu Y, Liu GL, Li XY. Per-Arnt-Sim Kinase (PASK): An Emerging Regulator of Mammalian Glucose and Lipid Metabolism. Nutrients 2015; 7:7437-50. [PMID: 26371032 PMCID: PMC4586542 DOI: 10.3390/nu7095347] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Revised: 08/27/2015] [Accepted: 08/31/2015] [Indexed: 12/19/2022] Open
Abstract
Per-Arnt-Sim Kinase (PASK) is an evolutionarily-conserved nutrient-responsive protein kinase that regulates lipid and glucose metabolism, mitochondrial respiration, phosphorylation, and gene expression. Recent data suggests that mammalian PAS kinase is involved in glucose metabolism and acts on pancreatic islet α/β cells and glycogen synthase (GS), affecting insulin secretion and blood glucose levels. In addition, PASK knockout mice (PASK-/-) are protected from obesity, liver triglyceride accumulation, and insulin resistance when fed a high-fat diet, implying that PASK may be a new target for metabolic syndrome (MetS) treatment as well as the cellular nutrients and energy sensors—adenosine monophosphate (AMP)-activated protein kinase (AMPK) and the targets of rapamycin (m-TOR). In this review, we will briefly summarize the regulation of PASK on mammalian glucose and lipid metabolism and its possible mechanism, and further explore the potential targets for MetS therapy.
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Affiliation(s)
- Dan-dan Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, School of medicine, Shanghai Jiaotong University, No.100 Haining Road, Shanghai 200025, China.
| | - Ji-gang Zhang
- Department of Clinical Pharmacy, Shanghai General Hospital, School of medicine, Shanghai Jiaotong University, No.100 Haining Road, Shanghai 200025, China.
| | - Yu-zhu Wang
- Department of Clinical Pharmacy, Shanghai General Hospital, School of medicine, Shanghai Jiaotong University, No.100 Haining Road, Shanghai 200025, China.
| | - Ying Liu
- Department of Clinical Pharmacy, Shanghai General Hospital, School of medicine, Shanghai Jiaotong University, No.100 Haining Road, Shanghai 200025, China.
| | - Gao-lin Liu
- Department of Clinical Pharmacy, Shanghai General Hospital, School of medicine, Shanghai Jiaotong University, No.100 Haining Road, Shanghai 200025, China.
| | - Xiao-yu Li
- Department of Clinical Pharmacy, Shanghai General Hospital, School of medicine, Shanghai Jiaotong University, No.100 Haining Road, Shanghai 200025, China.
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31
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Soyal SM, Nofziger C, Dossena S, Paulmichl M, Patsch W. Targeting SREBPs for treatment of the metabolic syndrome. Trends Pharmacol Sci 2015; 36:406-16. [PMID: 26005080 DOI: 10.1016/j.tips.2015.04.010] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 04/20/2015] [Accepted: 04/23/2015] [Indexed: 12/11/2022]
Abstract
Over the past few decades, mortality resulting from cardiovascular disease (CVD) steadily decreased in western countries; however, in recent years, the decline has become offset by the increase in obesity. Obesity is strongly associated with the metabolic syndrome and its atherogenic dyslipidemia resulting from insulin resistance. While lifestyle treatment would be effective, drugs targeting individual risk factors are often required. Such treatment may result in polypharmacy. Novel approaches are directed towards the treatment of several risk factors with one drug. Studies in animal models and humans suggest a central role for sterol regulatory-element binding proteins (SREBPs) in the pathophysiology of the metabolic syndrome. Four recent studies targeting the maturation or transcriptional activities of SREBPs provide proof of concept for the efficacy of SREBP inhibition in this syndrome.
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Affiliation(s)
- Selma M Soyal
- Institute of Pharmacology and Toxicology, Paracelsus Medical University, Salzburg, Austria
| | - Charity Nofziger
- Institute of Pharmacology and Toxicology, Paracelsus Medical University, Salzburg, Austria
| | - Silvia Dossena
- Institute of Pharmacology and Toxicology, Paracelsus Medical University, Salzburg, Austria
| | - Markus Paulmichl
- Institute of Pharmacology and Toxicology, Paracelsus Medical University, Salzburg, Austria
| | - Wolfgang Patsch
- Institute of Pharmacology and Toxicology, Paracelsus Medical University, Salzburg, Austria.
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32
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DeMille D, Badal BD, Evans JB, Mathis AD, Anderson JF, Grose JH. PAS kinase is activated by direct SNF1-dependent phosphorylation and mediates inhibition of TORC1 through the phosphorylation and activation of Pbp1. Mol Biol Cell 2015; 26:569-82. [PMID: 25428989 PMCID: PMC4310746 DOI: 10.1091/mbc.e14-06-1088] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2014] [Revised: 10/29/2014] [Accepted: 11/16/2014] [Indexed: 01/22/2023] Open
Abstract
We describe the interplay between three sensory protein kinases in yeast: AMP-regulated kinase (AMPK, or SNF1 in yeast), PAS kinase 1 (Psk1 in yeast), and the target of rapamycin complex 1 (TORC1). This signaling cascade occurs through the SNF1-dependent phosphorylation and activation of Psk1, which phosphorylates and activates poly(A)- binding protein binding protein 1 (Pbp1), which then inhibits TORC1 through sequestration at stress granules. The SNF1-dependent phosphorylation of Psk1 appears to be direct, in that Snf1 is necessary and sufficient for Psk1 activation by alternate carbon sources, is required for altered Psk1 protein mobility, is able to phosphorylate Psk1 in vitro, and binds Psk1 via its substrate-targeting subunit Gal83. Evidence for the direct phosphorylation and activation of Pbp1 by Psk1 is also provided by in vitro and in vivo kinase assays, including the reduction of Pbp1 localization at distinct cytoplasmic foci and subsequent rescue of TORC1 inhibition in PAS kinase-deficient yeast. In support of this signaling cascade, Snf1-deficient cells display increased TORC1 activity, whereas cells containing hyperactive Snf1 display a PAS kinase-dependent decrease in TORC1 activity. This interplay between yeast SNF1, Psk1, and TORC1 allows for proper glucose allocation during nutrient depletion, reducing cell growth and proliferation when energy is low.
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Affiliation(s)
- Desiree DeMille
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602
| | - Bryan D Badal
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602
| | - J Brady Evans
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602
| | - Andrew D Mathis
- Department of Chemistry, Brigham Young University, Provo, UT 84602
| | - Joseph F Anderson
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602
| | - Julianne H Grose
- Department of Microbiology and Molecular Biology, Brigham Young University, Provo, UT 84602
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Sabatini PV, Lynn FC. All-encomPASsing regulation of β-cells: PAS domain proteins in β-cell dysfunction and diabetes. Trends Endocrinol Metab 2015; 26:49-57. [PMID: 25500169 DOI: 10.1016/j.tem.2014.11.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/07/2014] [Accepted: 11/11/2014] [Indexed: 12/27/2022]
Abstract
As a sensory micro-organ, pancreatic β-cells continually respond to nutritional signals and neuroendocrine input from other glucoregulatory organs. This sensory ability is essential for normal β-cell function and systemic glucose homeostasis. Period circadian protein (Per)-aryl hydrocarbon receptor nuclear translocator protein (Arnt)-single-minded protein (Sim) (PAS) domain proteins have a conserved role as sensory proteins, critical in adaptation to changes in voltage, oxygen potential, and xenobiotics. Within β-cells, PAS domain proteins such as hypoxia inducible factor 1α (Hif1α), Arnt, PAS kinase, Bmal1, and Clock respond to disparate stimuli, but act in concert to maintain proper β-cell function. Elucidating the function of these factors in islets offers a unique insight into the sensing capacity of β-cells, the consequences of impaired sensory function, and the potential to develop novel therapeutic targets for preserving β-cell function in diabetes.
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Affiliation(s)
- Paul V Sabatini
- Diabetes Research Group, Child and Family Research Institute, Vancouver, British Columbia, Canada; The Departments of Surgery and Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, V5Z 4H4 Canada.
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- Diabetes Research Group, Child and Family Research Institute, Vancouver, British Columbia, Canada; The Departments of Surgery and Cellular and Physiological Sciences, University of British Columbia, Vancouver, British Columbia, V5Z 4H4 Canada.
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