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Choi SH, Kim HC, Jang SG, Lee YJ, Heo JY, Kweon GR, Ryu MJ. Effects of a Combination of Polynucleotide and Hyaluronic Acid for Treating Osteoarthritis. Int J Mol Sci 2024; 25:1714. [PMID: 38338992 PMCID: PMC10855695 DOI: 10.3390/ijms25031714] [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: 12/28/2023] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024] Open
Abstract
Knee osteoarthritis (OA), an age-related degenerative disease characterized by severe pain and disability, is treated using polynucleotides (PNs) and hyaluronic acid (HA). The intra-articular (IA) injection of HA has been studied extensively in both animal models and in humans; however, the efficacy and mechanisms of action remain unclear. In addition, there has been a paucity of research regarding the use of PN alone or in combination with HA in OA. To investigate the effect of the combined injection of PN and HA in vivo, pathological and behavioral changes were assessed in an OA model. Anterior cruciate ligament transection and medial meniscectomy were performed in Sprague-Dawley rats to create the OA animal model. The locomotor activity improved following PNHA injection, while the OARSI grade improved in the medial tibia and femur. In mild OA, TNFα levels decreased histologically in the PN, HA, and PNHA groups but only the PNHA group showed behavioral improvement in terms of distance. In conclusion, PNHA exhibited anti-inflammatory effects during OA progression and improved locomotor activity regardless of the OARSI grade.
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Affiliation(s)
- Seung Hee Choi
- Joonghun Pharmaceutical Co., Ltd., 15 Gukhoe-daero 62-gil, Yeongdeungpo-gu, Seoul 07236, Republic of Korea; (S.H.C.); (H.C.K.); (S.G.J.); (Y.J.L.)
| | - Hyun Chul Kim
- Joonghun Pharmaceutical Co., Ltd., 15 Gukhoe-daero 62-gil, Yeongdeungpo-gu, Seoul 07236, Republic of Korea; (S.H.C.); (H.C.K.); (S.G.J.); (Y.J.L.)
| | - Seul Gi Jang
- Joonghun Pharmaceutical Co., Ltd., 15 Gukhoe-daero 62-gil, Yeongdeungpo-gu, Seoul 07236, Republic of Korea; (S.H.C.); (H.C.K.); (S.G.J.); (Y.J.L.)
| | - Yeon Jae Lee
- Joonghun Pharmaceutical Co., Ltd., 15 Gukhoe-daero 62-gil, Yeongdeungpo-gu, Seoul 07236, Republic of Korea; (S.H.C.); (H.C.K.); (S.G.J.); (Y.J.L.)
| | - Jun Young Heo
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea; (J.Y.H.); (G.R.K.)
| | - Gi Ryang Kweon
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea; (J.Y.H.); (G.R.K.)
| | - Min Jeong Ryu
- Joonghun Pharmaceutical Co., Ltd., 15 Gukhoe-daero 62-gil, Yeongdeungpo-gu, Seoul 07236, Republic of Korea; (S.H.C.); (H.C.K.); (S.G.J.); (Y.J.L.)
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2
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Heo JY, Park AH, Lee MJ, Ryu MJ, Kim YK, Jang YS, Kim SJ, Shin SY, Son HJ, Stein TD, Huh YH, Chung SK, Choi SY, Kim JM, Hwang O, Shong M, Hyeon SJ, Lee J, Ryu H, Kim D, Kweon GR. Crif1 deficiency in dopamine neurons triggers early-onset parkinsonism. Mol Psychiatry 2023; 28:4474-4484. [PMID: 37648779 DOI: 10.1038/s41380-023-02234-5] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 08/07/2023] [Accepted: 08/16/2023] [Indexed: 09/01/2023]
Abstract
Mitochondrial dysfunction has been implicated in Parkinson's Disease (PD) progression; however, the mitochondrial factors underlying the development of PD symptoms remain unclear. One candidate is CR6-interacting factor1 (CRIF1), which controls translation and membrane insertion of 13 mitochondrial proteins involved in oxidative phosphorylation. Here, we found that CRIF1 mRNA and protein expression were significantly reduced in postmortem brains of elderly PD patients compared to normal controls. To evaluate the effect of Crif1 deficiency, we produced mice lacking the Crif1 gene in dopaminergic neurons (DAT-CRIF1-KO mice). From 5 weeks of age, DAT-CRIF1-KO mice began to show decreased dopamine production with progressive neuronal degeneration in the nigral area. At ~10 weeks of age, they developed PD-like behavioral deficits, including gait abnormalities, rigidity, and resting tremor. L-DOPA, a medication used to treat PD, ameliorated these defects at an early stage, although it was ineffective in older mice. Taken together, the observation that CRIF1 expression is reduced in human PD brains and deletion of CRIF1 in dopaminergic neurons leads to early-onset PD with stepwise PD progression support the conclusion that CRIF1-mediated mitochondrial function is important for the survival of dopaminergic neurons.
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Affiliation(s)
- Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Ah Hyung Park
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Yun Seon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - So Yeon Shin
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Hyo Jin Son
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Thor D Stein
- Boston University Alzheimer's Disease Research Center and Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA
- VA Bedford Healthcare System, Bedford, MA, 01730, USA
- VA Boston Healthcare System, Boston, MA, 02130, USA
| | - Yang Hoon Huh
- Electron Microscopy Research center, Korea Basic Science Institute, Cheongju, 28119, Republic of Korea
| | - Sookja K Chung
- Faculty of Medicine & Dr Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau SAR, China
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong SAR, China
| | - Song Yi Choi
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Jin Man Kim
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Onyou Hwang
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Minho Shong
- Graduate School of Medical Science and Education, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Seung Jae Hyeon
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Junghee Lee
- Boston University Alzheimer's Disease Research Center and Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Hoon Ryu
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
| | - Daesoo Kim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.
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3
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Heo JY, Park AH, Lee MJ, Ryu MJ, Kim YK, Jang YS, Kim SJ, Shin SY, Son HJ, Stein TD, Huh YH, Chung SK, Choi SY, Kim JM, Hwang O, Shong M, Hyeon SJ, Lee J, Ryu H, Kim D, Kweon GR. Correction: Crif1 deficiency in dopamine neurons triggers early-onset parkinsonism. Mol Psychiatry 2023; 28:4485. [PMID: 37783789 DOI: 10.1038/s41380-023-02254-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Affiliation(s)
- Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Ah Hyung Park
- Department of Brain and Cognitive Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Yun Seon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - So Yeon Shin
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Hyo Jin Son
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Thor D Stein
- Boston University Alzheimer's Disease Research Center and Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA
- VA Bedford Healthcare System, Bedford, MA, 01730, USA
- VA Boston Healthcare System, Boston, MA, 02130, USA
| | - Yang Hoon Huh
- Electron Microscopy Research center, Korea Basic Science Institute, Cheongju, 28119, Republic of Korea
| | - Sookja K Chung
- Faculty of Medicine & Dr Neher's Biophysics Laboratory for Innovative Drug Discovery, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Macau SAR, China
- State Key Laboratory of Pharmaceutical Biotechnology, The University of Hong Kong, Hong Kong SAR, China
| | - Song Yi Choi
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Jin Man Kim
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Onyou Hwang
- Department of Biochemistry and Molecular Biology, University of Ulsan College of Medicine, Seoul, 05505, Republic of Korea
| | - Minho Shong
- Graduate School of Medical Science and Education, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea
| | - Seung Jae Hyeon
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea
| | - Junghee Lee
- Boston University Alzheimer's Disease Research Center and Department of Neurology, Boston University School of Medicine, Boston, MA, 02118, USA
| | - Hoon Ryu
- Brain Science Institute, Korea Institute of Science and Technology, Seoul, 02792, Republic of Korea.
| | - Daesoo Kim
- Department of Brain and Cognitive Sciences, Korea Advanced Institute of Science and Technology, Daejeon, 34141, Republic of Korea.
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.
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4
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Lee MJ, Jang Y, Han J, Kim SJ, Ju X, Lee YL, Cui J, Zhu J, Ryu MJ, Choi SY, Chung W, Heo C, Yi HS, Kim HJ, Huh YH, Chung SK, Shong M, Kweon GR, Heo JY. Endothelial-specific Crif1 deletion induces BBB maturation and disruption via the alteration of actin dynamics by impaired mitochondrial respiration. J Cereb Blood Flow Metab 2020; 40:1546-1561. [PMID: 31987007 PMCID: PMC7308523 DOI: 10.1177/0271678x19900030] [Citation(s) in RCA: 12] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Cerebral endothelial cells (ECs) require junctional proteins to maintain blood-brain barrier (BBB) integrity, restricting toxic substances and controlling peripheral immune cells with a higher concentration of mitochondria than ECs of peripheral capillaries. The mechanism underlying BBB disruption by defective mitochondrial oxidative phosphorylation (OxPhos) is unclear in a mitochondria-related gene-targeted animal model. To assess the role of EC mitochondrial OxPhos function in the maintenance of the BBB, we developed an EC-specific CR6-interactin factor1 (Crif1) deletion mouse. We clearly observed defects in motor behavior, uncompacted myelin and leukocyte infiltration caused by BBB maturation and disruption in this mice. Furthermore, we investigated the alteration in the actin cytoskeleton, which interacts with junctional proteins to support BBB integrity. Loss of Crif1 led to reorganization of the actin cytoskeleton and a decrease in tight junction-associated protein expression through an ATP production defect in vitro and in vivo. Based on these results, we suggest that mitochondrial OxPhos is important for the maturation and maintenance of BBB integrity by supplying ATP to cerebral ECs.
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Affiliation(s)
- Min Joung Lee
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Yunseon Jang
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Jeongsu Han
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Soo J Kim
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Xianshu Ju
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Yu Lim Lee
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Jianchen Cui
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Jiebo Zhu
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Song-Yi Choi
- Department of Pathology, Chungnam National University, Daejeon, Republic of Korea
| | - Woosuk Chung
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Anesthesiology and Pain Medicine, School of Medicine, Chungnam National University, Daejeon, Republic of Korea.,Department of Anesthesiology and Pain medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Chaejeong Heo
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Suwon, South Korea.,Center for Neuroscience Imaging Research (CNIR), Institute for Basic Science (IBS), Suwon, South Korea
| | - Hyon-Seung Yi
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Hyun Jin Kim
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Yang H Huh
- Electron Microscopy Research Center, Korea Basic Science Institute, Cheongju, Chungcheongbukdo, Republic of Korea
| | - Sookja K Chung
- Medical Faculty at Macau University of Science and Technology, Taipa, Macau
| | - Minho Shong
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Republic of Korea.,Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Gi-Ryang Kweon
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea
| | - Jun Young Heo
- Department of Medical Science, Chungnam National University, Daejeon, Republic of Korea.,Department of Biochemistry, Chungnam National University, Daejeon, Republic of Korea.,Infection Control Convergence Research Center, College of Medicine, Chungnam National University, Daejeon, Republic of Korea
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5
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Choi MJ, Jung SB, Lee SE, Kang SG, Lee JH, Ryu MJ, Chung HK, Chang JY, Kim YK, Hong HJ, Kim H, Kim HJ, Lee CH, Mardinoglu A, Yi HS, Shong M. An adipocyte-specific defect in oxidative phosphorylation increases systemic energy expenditure and protects against diet-induced obesity in mouse models. Diabetologia 2020; 63:837-852. [PMID: 31925461 DOI: 10.1007/s00125-019-05082-7] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [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: 07/16/2019] [Accepted: 10/30/2019] [Indexed: 12/30/2022]
Abstract
AIMS/HYPOTHESIS Mitochondrial oxidative phosphorylation (OxPhos) is essential for energy production and survival. However, the tissue-specific and systemic metabolic effects of OxPhos function in adipocytes remain incompletely understood. METHODS We used adipocyte-specific Crif1 (also known as Gadd45gip1) knockout (AdKO) mice with decreased adipocyte OxPhos function. AdKO mice fed a normal chow or high-fat diet were evaluated for glucose homeostasis, weight gain and energy expenditure (EE). RNA sequencing of adipose tissues was used to identify the key mitokines affected in AdKO mice, which included fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15). For in vitro analysis, doxycycline was used to pharmacologically decrease OxPhos in 3T3L1 adipocytes. To identify the effects of GDF15 and FGF21 on the metabolic phenotype of AdKO mice, we generated AdKO mice with global Gdf15 knockout (AdGKO) or global Fgf21 knockout (AdFKO). RESULTS Under high-fat diet conditions, AdKO mice were resistant to weight gain and exhibited higher EE and improved glucose tolerance. In vitro pharmacological and in vivo genetic inhibition of OxPhos in adipocytes significantly upregulated mitochondrial unfolded protein response-related genes and secretion of mitokines such as GDF15 and FGF21. We evaluated the metabolic phenotypes of AdGKO and AdFKO mice, revealing that GDF15 and FGF21 differentially regulated energy homeostasis in AdKO mice. Both mitokines had beneficial effects on obesity and insulin resistance in the context of decreased adipocyte OxPhos, but only GDF15 regulated EE in AdKO mice. CONCLUSIONS/INTERPRETATION The present study demonstrated that the adipose tissue adaptive mitochondrial stress response affected systemic energy homeostasis via cell-autonomous and non-cell-autonomous pathways. We identified novel roles for adipose OxPhos and adipo-mitokines in the regulation of systemic glucose homeostasis and EE, which facilitated adaptation of an organism to local mitochondrial stress.
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Affiliation(s)
- Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Saet-Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
| | - Seul Gi Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Ju Hee Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
| | - Joon Young Chang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
| | - Hyun Jung Hong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Hail Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea
| | - Hyun Jin Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea
| | - Chul-Ho Lee
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, South Korea
| | - Adil Mardinoglu
- Science for Life Laboratory, KTH - Royal Institute of Technology, Stockholm, Sweden
- Centre for Host-Microbiome Interactions, Faculty of Dentistry, Oral & Craniofacial Sciences, King's College London, London, UK
| | - Hyon-Seung Yi
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea.
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 35015, South Korea.
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, 35015, South Korea.
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6
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Jang Y, Lee JH, Lee MJ, Kim SJ, Ju X, Cui J, Zhu J, Lee YL, Namgung E, Sung HWJ, Lee HW, Ryu MJ, Oh E, Chung W, Kweon GR, Choi CW, Heo JY. Schisandra Extract and Ascorbic Acid Synergistically Enhance Cognition in Mice Through Modulation of Mitochondrial Respiration. Nutrients 2020; 12:nu12040897. [PMID: 32218327 PMCID: PMC7230947 DOI: 10.3390/nu12040897] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 02/24/2020] [Revised: 03/18/2020] [Accepted: 03/23/2020] [Indexed: 12/14/2022] Open
Abstract
Cognitive decline is observed in aging and neurodegenerative diseases, including Alzheimer’s disease (AD) and dementia. Intracellular energy produced via mitochondrial respiration is used in the regulation of synaptic plasticity and structure, including dendritic spine length and density, as well as for the release of neurotrophic factors involved in learning and memory. To date, a few synthetic agents for improving mitochondrial function have been developed for overcoming cognitive impairment. However, no natural compounds that modulate synaptic plasticity by directly targeting mitochondria have been developed. Here, we demonstrate that a mixture of Schisandra chinensis extract (SCE) and ascorbic acid (AA) improved cognitive function and induced synaptic plasticity-regulating proteins by enhancing mitochondrial respiration. Treatment of embryonic mouse hippocampal mHippoE-14 cells with a 4:1 mixture of SCE and AA increased basal oxygen consumption rate. We found that mice injected with the SCE-AA mixture showed enhanced learning and memory and recognition ability. We further observed that injection of the SCE-AA mixture in mice significantly increased expression of postsynaptic density protein 95 (PSD95), an increase that was correlated with enhanced brain-derived neurotrophic factor (BDNF) expression. These results demonstrate that a mixture of SCE and AA improves mitochondrial function and memory, suggesting that this natural compound mixture could be used to alleviate AD and aging-associated memory decline.
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Affiliation(s)
- Yunseon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jae Hyeon Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Xianshu Ju
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jianchen Cui
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jiebo Zhu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Yu Lim Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Eunji Namgung
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Han Wool John Sung
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
| | - Hong Won Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
| | - Eungseok Oh
- Department of Neurology, Chungnam National University Hospital, Daejeon 35015, Korea;
| | - Woosuk Chung
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Department of Anesthesiology and Pain Medicine, Chungnam National University Hospital, Daejeon 35015, Korea
- Department of Anesthesiology and Pain Medicine, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
| | - Chun Whan Choi
- Natural Product Research Team, Biocenter, Gyeonggido Business and Science Accelerator, Suwon 16229, Korea
- Correspondence: (C.W.C.); (J.Y.H.); Tel.: +82-31-888-6131 (C.W.C.); +82-42-580-8222 (J.Y.H.)
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea; (Y.J.); (J.H.L.); (M.J.L.); (S.J.K.); (X.J.); (J.C.); (J.Z.); (Y.L.L.); (E.N.); (H.W.J.S.); (H.W.L.); (M.J.R.); (G.R.K.)
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea;
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Correspondence: (C.W.C.); (J.Y.H.); Tel.: +82-31-888-6131 (C.W.C.); +82-42-580-8222 (J.Y.H.)
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7
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Ju X, Ryu MJ, Cui J, Lee Y, Park S, Hong B, Yoo S, Lee WH, Shin YS, Yoon SH, Kweon GR, Kim YH, Ko Y, Heo JY, Chung W. The mTOR Inhibitor Rapamycin Prevents General Anesthesia-Induced Changes in Synaptic Transmission and Mitochondrial Respiration in Late Postnatal Mice. Front Cell Neurosci 2020; 14:4. [PMID: 32047423 PMCID: PMC6997293 DOI: 10.3389/fncel.2020.00004] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 08/06/2019] [Accepted: 01/09/2020] [Indexed: 12/20/2022] Open
Abstract
Preclinical animal studies have continuously reported the possibility of long-lasting neurotoxic effects after general anesthesia in young animals. Such studies also show that the neurological changes induced by anesthesia in young animals differ by their neurodevelopmental stage. Exposure to anesthetic agents increase dendritic spines and induce sex-dependent changes of excitatory/inhibitory synaptic transmission in late postnatal mice, a critical synaptogenic period. However, the mechanisms underlying these changes remain unclear. Abnormal activation of the mammalian target of rapamycin (mTOR) signaling pathway, an important regulator of neurodevelopment, has also been shown to induce similar changes during neurodevelopment. Interestingly, previous studies show that exposure to general anesthetics during neurodevelopment can activate the mTOR signaling pathway. This study, therefore, evaluated the role of mTOR signaling after exposing postnatal day (PND) 16/17 mice to sevoflurane, a widely used inhalation agent in pediatric patients. We first confirmed that a 2-h exposure of 2.5% sevoflurane could induce widespread mTOR phosphorylation in both male and female mice. Pretreatment with the mTOR inhibitor rapamycin not only prevented anesthesia-induced mTOR phosphorylation, but also the increase in mitochondrial respiration and male-dependent enhancement of excitatory synaptic transmission. However, the changes in inhibitory synaptic transmission that appear after anesthesia in female mice were not affected by rapamycin pretreatment. Our results suggest that mTOR inhibitors may act as potential therapeutic agents for anesthesia-induced changes in the developing brain.
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Affiliation(s)
- Xianshu Ju
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Jianchen Cui
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yulim Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Sangil Park
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea
| | - Boohwi Hong
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Sungho Yoo
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea
| | - Won Hyung Lee
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yong Sup Shin
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Seok-Hwa Yoon
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Yoon Hee Kim
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Youngkwon Ko
- Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea.,Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon, South Korea
| | - Woosuk Chung
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, South Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
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8
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Park E, Ryu MJ, Kim NK, Bae MH, Seo Y, Kim J, Yeo S, Kanwal M, Choi CW, Heo JY, Jeong SY. Synergistic Neuroprotective Effect of Schisandra chinensis and Ribes fasciculatum on Neuronal Cell Death and Scopolamine-Induced Cognitive Impairment in Rats. Int J Mol Sci 2019; 20:ijms20184517. [PMID: 31547274 PMCID: PMC6770047 DOI: 10.3390/ijms20184517] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 09/01/2019] [Accepted: 09/06/2019] [Indexed: 12/19/2022] Open
Abstract
Mild cognitive impairment (MCI) is considered as a transitional stage between aging and Alzheimer’s disease. In the present study, we examined the protective effect of Schisandra chinensis (SC) and Ribes fasciculatum (RF) on neuronal cell death in vitro and scopolamine-induced cognitive impairment in Sprague Dawley® rats in vivo. A mixture of SC and RF extracts (SC+RF) significantly protected against hydrogen peroxide-induced PC12 neuronal cell death. The neuroprotective effect of SC+RF on scopolamine-induced memory impairment in rats was evaluated using the passive avoidance test and the Morris water maze test. In the passive avoidance test, SC+RF-treated rats showed an increased latency to escape, compared to the scopolamine-treated rats. Moreover, SC+RF treatment significantly reduced escape latency in water maze test, compared to treatment with scopolamine alone. To verify the long-term memory, we performed probe test of water maze test. As a result, rat treated with SC+RF spent more time in the target quadrant. Consistent with enhancement of memory function, the brain derived neurotrophic factor (BDNF) and its downstream molecules (pERK, pATK, and pCREB) are increased in SC+RF treatment in hippocampal area compared with scopolamine treated group. These results suggest that a mixture of SC and RF extracts may be a good therapeutic candidate for preventing mild cognitive impairment.
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Affiliation(s)
- Eunkuk Park
- Department of Medical Genetics, Ajou University School of Medicine, Suwon 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301747, Korea
- Research Institute for Medical Science Chungnam National University School of Medicine, Daejeon 301747, Korea
| | - Nam Ki Kim
- Rpbio Research Institute, Rpbio Co. Ltd., Suwon 16229, Korea
| | - Mun Hyoung Bae
- Rpbio Research Institute, Rpbio Co. Ltd., Suwon 16229, Korea
| | - Youngha Seo
- Rpbio Research Institute, Rpbio Co. Ltd., Suwon 16229, Korea
| | - Jeonghyun Kim
- Department of Medical Genetics, Ajou University School of Medicine, Suwon 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea
| | - Subin Yeo
- NineB Research Institute, Nine B Co. Ltd., Suwon 16499, Korea
| | - Memoona Kanwal
- Department of Medical Genetics, Ajou University School of Medicine, Suwon 16499, Korea
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea
| | - Chun Whan Choi
- Natural Products Research Team, Gyeonggi Business & Science Accelerator, Suwon 16229, Korea
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301747, Korea.
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 301747, Korea.
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 301747, Korea.
| | - Seon-Yong Jeong
- Department of Medical Genetics, Ajou University School of Medicine, Suwon 16499, Korea.
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon 16499, Korea.
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9
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Ryu MJ, Han J, Kim SJ, Lee MJ, Ju X, Lee YL, Son JH, Cui J, Jang Y, Chung W, Song IC, Kweon GR, Heo JY. PTEN/AKT signaling mediates chemoresistance in refractory acute myeloid leukemia through enhanced glycolysis. Oncol Rep 2019; 42:2149-2158. [PMID: 31545464 DOI: 10.3892/or.2019.7308] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 07/09/2019] [Indexed: 11/05/2022] Open
Abstract
Primary refractory acute myeloid leukemia (AML) and early recurrence of leukemic cells are among the most difficult hurdles to overcome in the treatment of AML. Moreover, uncertainties surrounding the molecular mechanism underlying refractory AML pose a challenge when it comes to developing novel therapeutic drugs. However, accumulating evidence suggests a contribution of phosphatase and tensin homolog (PTEN)/protein kinase B (AKT) signaling to the development of refractory AML. To assess PTEN/AKT signaling in AML, two types of AML cell lines were evaluated, namely control HL60 cells and KG1α cells, a refractory AML cell line that is resistant to idarubicin and cytarabine (AraC) treatment. Changes in the expression level of glycolysis‑ and mitochondrial oxidative phosphorylation‑related genes and proteins were evaluated by reverse transcription‑quantitative polymerase chain reaction and western blot analyses, respectively. The mitochondrial oxygen consumption and extracellular acidification rates were measured using an XF24 analyzer. CCK8 assay and Annexin V/PI staining were used to analyze cell viability and cellular apoptosis, respectively. The PTEN protein was found to be depleted, whereas AKT phosphorylation levels were elevated in KG1α cells compared with HL60 cells. These changes were associated with increased expression of glucose transporter 1 and hexokinase 2, and increased lactate production. AKT inhibition decreased the proliferation of KG1α cells and decreased extracellular acidification without affecting HL60 cells. Notably, AKT inhibition increased the susceptibility of KG1α cells to chemotherapy with idarubicin and AraC. Taken together, the findings of the present study indicate that activation of AKT by PTEN deficiency sustains the refractory AML status through enhancement of glycolysis and mitochondrial respiration, effects that may be rescued by inhibiting AKT activity.
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Affiliation(s)
- Min Jeong Ryu
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Jeongsu Han
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Soo Jeong Kim
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Min Joung Lee
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Xianshu Ju
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Yu Lim Lee
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Jeong Hwan Son
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Jianchen Cui
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Yunseon Jang
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Woosuk Chung
- Brain Research Institute, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Ik-Chan Song
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Jun Young Heo
- Department of Biochemistry, College of Medicine, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
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10
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Kim SJ, Ryu MJ, Han J, Jang Y, Lee MJ, Ju X, Ryu I, Lee YL, Oh E, Chung W, Heo JY, Kweon GR, Heo JY. Non-cell autonomous modulation of tyrosine hydroxylase by HMGB1 released from astrocytes in an acute MPTP-induced mouse model. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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11
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Kim SJ, Ryu MJ, Han J, Jang Y, Lee MJ, Ju X, Ryu I, Lee YL, Oh E, Chung W, Heo JY, Kweon GR. Non-cell autonomous modulation of tyrosine hydroxylase by HMGB1 released from astrocytes in an acute MPTP-induced Parkinsonian mouse model. J Transl Med 2019; 99:1389-1399. [PMID: 31043679 DOI: 10.1038/s41374-019-0254-5] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 02/20/2019] [Accepted: 03/02/2019] [Indexed: 12/20/2022] Open
Abstract
High-mobility group box 1 (HMGB1) is actively secreted from inflammatory cells and acts via a non-cell-autonomous mechanism to play an important role in mediating cell proliferation and migration. The HMGB1-RAGE (receptor for advanced glycation end products) axis upregulates tyrosine hydroxylase (TH) expression in response to extracellular insults in dopaminergic neurons in vitro, but little is known about HMGB1 in modulation of dopaminergic neurons in vivo. Here, using immunohistochemistry, we show that HMGB1 and RAGE expression are higher in the nigral area of MPTP (methyl-4-phenyl-1,2,3,6-tetrahydropyridine)-treated mice, a toxin-induced Parkinsonian mouse model, compared with saline-treated controls. HMGB1 was predominantly localized to astrocytes and may affect neighboring dopaminergic neurons in the MPTP mouse model, owing to co-localization of RAGE in these TH-positive cells. In addition, MPTP induced a decrease in TH expression, an effect that was potentiated by inhibition of c-Jun N-terminal kinase (JNK) or RAGE. Moreover, stereotaxic injection of recombinant HMGB1 attenuated the MPTP-induced reduction of TH in a Parkinsonian mouse model. Collectively, our results suggest that an increase of HMGB1, released from astrocytes, upregulates TH expression in an acute MPTP-induced Parkinsonian mouse model, thereby maintaining dopaminergic neuronal functions.
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Affiliation(s)
- Soo Jeong Kim
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Min Jeong Ryu
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Research Institute for Medical Science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Jeongsu Han
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Yunseon Jang
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Min Joung Lee
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Xianshu Ju
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Ilhwan Ryu
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Yu Lim Lee
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Eungseok Oh
- Department of Neurology, Chungnam National University Hospital, Jung-gu Munhwa-ro 282, Daejeon, 35015, Republic of Korea
| | - Woosuk Chung
- Department of Anesthesiology and Pain Medicine, Chungnam National University Hospital, Jung-gu Munhwa-ro 282, Daejeon, 35015, Republic of Korea.,Brain research Institute, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea
| | - Jun Young Heo
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea. .,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea. .,Infection Control Convergence Research Center, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea. .,Brain research Institute, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.
| | - Gi Ryang Kweon
- Department of Biochemistry, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea. .,Department of Medical science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea. .,Research Institute for Medical Science, College of medicine, Chungnam National University, Jung-gu Munhwa-ro 266, Daejeon, 35015, Republic of Korea.
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12
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Lee MJ, Jang Y, Han J, Kim SJ, Ju X, Lee YL, Cui J, Ryu MJ, Choi SY, Chung W, Kweon GR, Heo C, Heo JY. Impaired mitochondrial respiration by Crif1 deletion in endothelial cells disrupts blood–brain barrier through the alteration of actin dynamics. IBRO Rep 2019. [DOI: 10.1016/j.ibror.2019.07.951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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13
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Jang Y, Choo H, Lee MJ, Han J, Kim SJ, Ju X, Cui J, Lee YL, Ryu MJ, Oh ES, Choi SY, Chung W, Kweon GR, Heo JY. Auraptene Mitigates Parkinson's Disease-Like Behavior by Protecting Inhibition of Mitochondrial Respiration and Scavenging Reactive Oxygen Species. Int J Mol Sci 2019; 20:ijms20143409. [PMID: 31336718 PMCID: PMC6679046 DOI: 10.3390/ijms20143409] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/06/2019] [Accepted: 07/09/2019] [Indexed: 01/05/2023] Open
Abstract
Current therapeutics for Parkinson’s disease (PD) are only effective in providing relief of symptoms such as rigidity, tremors and bradykinesia, and do not exert disease-modifying effects by directly modulating mitochondrial function. Here, we investigated auraptene (AUR) as a potent therapeutic reagent that specifically protects neurotoxin-induced reduction of mitochondrial respiration and inhibits reactive oxygen species (ROS) generation. Further, we explored the mechanism and potency of AUR in protecting dopaminergic neurons. Treatment with AUR significantly increased the viability of substantia nigra (SN)-derived SN4741 embryonic dopaminergic neuronal cells and reduced rotenone-induced mitochondrial ROS production. By inducing antioxidant enzymes AUR treatment also increased oxygen consumption rate. These results indicate that AUR exerts a protective effect against rotenone-induced mitochondrial oxidative damage. We further assessed AUR effects in vivo, investigating tyrosine hydroxylase (TH) expression in the striatum and substantia nigra of MPTP-induced PD model mice and behavioral changes after injection of AUR. AUR treatment improved movement, consistent with the observed increase in the number of dopaminergic neurons in the substantia nigra. These results demonstrate that AUR targets dual pathogenic mechanisms, enhancing mitochondrial respiration and attenuating ROS production, suggesting that the preventative potential of this natural compound could lead to improvement in PD-related neurobiological changes.
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Affiliation(s)
- Yunseon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Hyosun Choo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jeongsu Han
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Xianshu Ju
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jianchen Cui
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Yu Lim Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Eung Seok Oh
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Neurology, Chungnam National University Hospital, Daejeon 35015, Korea
| | - Song-Yi Choi
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Pathology, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Woosuk Chung
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
- Department of Anesthesiology and pain medicine, Chungnam National University Hospital, Daejeon 35015, Korea
- Department of Anesthesiology and pain medicine, Chungnam National University, Daejeon 35015, Korea
- Brain Research Institute, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea.
- Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea.
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea.
- Infection Control Convergence Research Center, Chungnam National University School of Medicine, Daejeon 35015, Korea.
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14
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Huang H, Lee SH, Sousa-Lima I, Kim SS, Hwang WM, Dagon Y, Yang WM, Cho S, Kang MC, Seo JA, Shibata M, Cho H, Belew GD, Bhin J, Desai BN, Ryu MJ, Shong M, Li P, Meng H, Chung BH, Hwang D, Kim MS, Park KS, Macedo MP, White M, Jones J, Kim YB. Rho-kinase/AMPK axis regulates hepatic lipogenesis during overnutrition. J Clin Invest 2018; 128:5335-5350. [PMID: 30226474 DOI: 10.1172/jci63562] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [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: 07/18/2017] [Accepted: 09/11/2018] [Indexed: 12/24/2022] Open
Abstract
Obesity is a major risk factor for developing nonalcoholic fatty liver disease (NAFLD). NAFLD is the most common form of chronic liver disease and is closely associated with insulin resistance, ultimately leading to cirrhosis and hepatocellular carcinoma. However, knowledge of the intracellular regulators of obesity-linked fatty liver disease remains incomplete. Here we showed that hepatic Rho-kinase 1 (ROCK1) drives obesity-induced steatosis in mice through stimulation of de novo lipogenesis. Mice lacking ROCK1 in the liver were resistant to diet-induced obesity owing to increased energy expenditure and thermogenic gene expression. Constitutive expression of hepatic ROCK1 was sufficient to promote adiposity, insulin resistance, and hepatic lipid accumulation in mice fed a high-fat diet. Correspondingly, liver-specific ROCK1 deletion prevented the development of severe hepatic steatosis and reduced hyperglycemia in obese diabetic (ob/ob) mice. Of pathophysiological significance, hepatic ROCK1 was markedly upregulated in humans with fatty liver disease and correlated with risk factors clustering around NAFLD and insulin resistance. Mechanistically, we found that hepatic ROCK1 suppresses AMPK activity and a ROCK1/AMPK pathway is necessary to mediate cannabinoid-induced lipogenesis in the liver. Furthermore, treatment with metformin, the most widely used antidiabetes drug, reduced hepatic lipid accumulation by inactivating ROCK1, resulting in activation of AMPK downstream signaling. Taken together, our findings establish a ROCK1/AMPK signaling axis that regulates de novo lipogenesis, providing a unique target for treating obesity-related metabolic disorders such as NAFLD.
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Affiliation(s)
- Hu Huang
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Department of Kinesiology and Physiology, East Carolina University, East Carolina Diabetes and Obesity Institute, Greenville, North Carolina, USA
| | - Seung-Hwan Lee
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Division of Endocrinology and Metabolism, Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Inês Sousa-Lima
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Centro de Estudos de Doenҫas Crónicas (CEDOC), Chronic Disease Research Center, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Sang Soo Kim
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Won Min Hwang
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Yossi Dagon
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Won-Mo Yang
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Sungman Cho
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Min-Cheol Kang
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Ji A Seo
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Division of Endocrinology, Department of Internal Medicine, Korea University College of Medicine, Seoul, Korea
| | - Munehiko Shibata
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Hyunsoo Cho
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Getachew Debas Belew
- Center for Neuroscience and Cell Biology, University of Coimbra, Largo Marquês de Pombal, Coimbra, Portugal
| | - Jinhyuk Bhin
- Center for Plant Aging Research and Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea
| | - Bhavna N Desai
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA
| | - Min Jeong Ryu
- Department of Endocrinology and Metabolism, Chungnam National University School of Medicine, Daejeon, Korea
| | - Minho Shong
- Department of Endocrinology and Metabolism, Chungnam National University School of Medicine, Daejeon, Korea
| | - Peixin Li
- Department of Kinesiology and Physiology, East Carolina University, East Carolina Diabetes and Obesity Institute, Greenville, North Carolina, USA.,Department of Comprehensive Surgery Medical and Health Center Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hua Meng
- Department of Comprehensive Surgery Medical and Health Center Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Byung-Hong Chung
- Department of Nutrition Science, Diabetes Research and Training Center, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Daehee Hwang
- Center for Plant Aging Research and Department of New Biology, Daegu Gyeongbuk Institute of Science and Technology, Daegu, Korea
| | - Min Seon Kim
- Department of Internal Medicine, Asan Medical Center, University of Ulsan, College of Medicine, Seoul, Korea
| | - Kyong Soo Park
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
| | - Maria Paula Macedo
- Centro de Estudos de Doenҫas Crónicas (CEDOC), Chronic Disease Research Center, NOVA Medical School/Faculdade de Ciências Médicas, Universidade Nova de Lisboa, Lisbon, Portugal
| | - Morris White
- Department of Endocrinology, Children's Hospital and Harvard Medical School, Boston, Massachusetts, USA
| | - John Jones
- Center for Neuroscience and Cell Biology, University of Coimbra, Largo Marquês de Pombal, Coimbra, Portugal
| | - Young-Bum Kim
- Division of Endocrinology, Diabetes, and Metabolism, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, Massachusetts, USA.,Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Korea
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15
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Ryu I, Ryu MJ, Han J, Kim SJ, Lee MJ, Ju X, Yoo BH, Lee YL, Jang Y, Song IC, Chung W, Oh E, Heo JY, Kweon GR. L‑Deprenyl exerts cytotoxicity towards acute myeloid leukemia through inhibition of mitochondrial respiration. Oncol Rep 2018; 40:3869-3878. [PMID: 30272370 DOI: 10.3892/or.2018.6753] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 09/17/2018] [Indexed: 11/06/2022] Open
Abstract
The identification of large numbers of genetic mutations in immature myeloid cells has made it difficult to identify specific targets for acute myeloid leukemia (AML) therapy. Although current pharmacological targets for controlling cancer are focused on identifying genetic mutations, it is hard to develop the specific drugs to achieve complete remission due to complex and variable genetic mutations. To overcome the failure of the genetic mutation theory, the present study targeted mitochondrial metabolism as a strategy for inducing anti‑leukemic activity, based on evidence that AML cells have an abnormally high amount of mitochondria and that somatic mutations can alter metabolic flux in cancer. It was found that L‑deprenyl, which is clinically available for the treatment of Parkinson's disease, exerts anti‑mitochondria activity in KG‑1α cells, as assessed by detection of oxygen consumption rate (OCR) and extracellular acidification (ECAR) using XF analyzer, respectively. Using a luciferase assay for detecting adenosine triphosphate (ATP) content, it was found that suppression of mitochondrial activity led to ATP depletion and was associated with potent cytotoxic activity. L‑deprenyl is known to target monoamine oxidase‑B (MAO‑B) on the outer membrane of mitochondria, therefore, the activity of MAO‑A and ‑B was measured based on the fluorometric detection of H2O2 produced by the enzyme reaction. Notably, MAO‑A and -B activity was low in AML cells and the present findings suggested that the anticancer effect of L‑deprenyl was independent of MAO‑B. Change of mitochondrial respiration‑ and glycolysis‑related gene expression levels were measured by reverse transcription‑quantitative polymerase chain reaction. Consistent with the aforementioned results, treatment with L‑deprenyl reduced the mRNA level of mitochondrial respiration‑ and glycolysis‑related genes. Collectively, the present results identify L‑deprenyl as a novel candidate for the treatment of AML through inhibition of mitochondrial respiration.
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Affiliation(s)
- Ilhwan Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Jeongsu Han
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Xianshu Ju
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Byeong Hyeon Yoo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Yu Lim Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Yunseon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Ik-Chan Song
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Woosuk Chung
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Eungseok Oh
- Department of Neurology, Chungnam National University Hospital, Daejeon 35015, Republic of Korea
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Republic of Korea
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16
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17
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18
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Kim SJ, Ryu MJ, Han J, Jang Y, Kim J, Lee MJ, Ryu I, Ju X, Oh E, Chung W, Kweon GR, Heo JY. Activation of the HMGB1-RAGE axis upregulates TH expression in dopaminergic neurons via JNK phosphorylation. Biochem Biophys Res Commun 2017; 493:358-364. [DOI: 10.1016/j.bbrc.2017.09.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Accepted: 09/04/2017] [Indexed: 01/05/2023]
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19
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Lee SE, Kang SG, Choi MJ, Jung SB, Ryu MJ, Chung HK, Chang JY, Kim YK, Lee JH, Kim KS, Kim HJ, Lee HK, Yi HS, Shong M. Growth Differentiation Factor 15 Mediates Systemic Glucose Regulatory Action of T-Helper Type 2 Cytokines. Diabetes 2017; 66:2774-2788. [PMID: 28874416 DOI: 10.2337/db17-0333] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 08/24/2017] [Indexed: 11/13/2022]
Abstract
T-helper type 2 (Th2) cytokines, including interleukin (IL)-13 and IL-4, produced in adipose tissue, are critical regulators of intra-adipose and systemic lipid and glucose metabolism. Furthermore, IL-13 is a potential therapy for insulin resistance in obese mouse models. Here, we examined mediators produced by adipocytes that are responsible for regulating systemic glucose homeostasis in response to Th2 cytokines. We used RNA sequencing data analysis of cultured adipocytes to screen factors secreted in response to recombinant IL-13. Recombinant IL-13 induced expression of growth differentiation factor 15 (GDF15) via the Janus kinase-activated STAT6 pathway. In vivo administration of α-galactosylceramide or IL-33 increased IL-4 and IL-13 production, thereby increasing GDF15 levels in adipose tissue and in plasma of mice; however, these responses were abrogated in STAT6 knockout mice. Moreover, administration of recombinant IL-13 to wild-type mice fed a high-fat diet (HFD) improved glucose intolerance; this was not the case for GDF15 knockout mice fed the HFD. Taken together, these data suggest that GDF15 is required for IL-13-induced improvement of glucose intolerance in mice fed an HFD. Thus, beneficial effects of Th2 cytokines on systemic glucose metabolism and insulin sensitivity are mediated by GDF15. These findings open up a potential pharmacological route for reversing insulin resistance associated with obesity.
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Affiliation(s)
- Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seul Gi Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Saet-Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Joon Young Chang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- Department of Medical Science, Chungnam National University School of Medicine, Daejeon, Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ju Hee Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jin Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Heung Kyu Lee
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon, Korea
| | - Hyon-Seung Yi
- Department of Internal Medicine, Chungnam National University Hospital, Daejeon, Korea
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
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20
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Nagar H, Jung SB, Ryu MJ, Choi SJ, Piao S, Song HJ, Kang SK, Shin N, Kim DW, Jin SA, Jeong JO, Irani K, Jeon BH, Shong M, Kweon GR, Kim CS. CR6-Interacting Factor 1 Deficiency Impairs Vascular Function by Inhibiting the Sirt1-Endothelial Nitric Oxide Synthase Pathway. Antioxid Redox Signal 2017; 27:234-249. [PMID: 28117598 DOI: 10.1089/ars.2016.6719] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
AIMS Mitochondrial dysfunction has emerged as a major contributing factor to endothelial dysfunction and vascular disease, but the key mechanisms underlying mitochondrial dysfunction-induced endothelial dysfunction remain to be elucidated. In this study, we aim at determining whether mitochondrial dysfunction in endothelial cells plays a key role in vascular disease, by examining the phenotype of endothelial-specific CR6-interacting factor 1 (CRIF1) knockout mice. We also used siRNA-mediated downregulation of CRIF1 gene in the endothelial cells to study about the in vitro pathophysiological underlying mechanisms. RESULTS Downregulation of CRIF1 in endothelial cells caused disturbances of mitochondrial oxidative phosphorylation complexes and membrane potential, leading to enhanced mitochondrial reactive oxygen species production. Gene silencing of CRIF1 results in decreased SIRT1 expression along with increased endothelial nitric oxide synthase (eNOS) acetylation, leading to reduced nitric oxide production both in vitro and in vivo. Endothelium-dependent vasorelaxation of aortic rings from CRIF1 knockout (KO) mice was considerably less than in wild-type mice, and it was partially recovered by Sirt1 overexpression in CRIF1 KO mice. INNOVATION Our results show for the first time a relationship between mitochondrial dysfunction and impaired vascular function induced in CRIF1 deficiency conditions and also the possible underlying pathway involved. CONCLUSION These findings indicate that CRIF1 plays an important role in maintaining mitochondrial and endothelial function through its effects on the SIRT1-eNOS pathway. Antioxid. Redox Signal. 27, 234-249.
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Affiliation(s)
- Harsha Nagar
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Saet-Byel Jung
- 3 Department of Endocrinology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Min Jeong Ryu
- 4 Department of Biochemistry, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Su-Jung Choi
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Shuyu Piao
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Hee-Jung Song
- 5 Department of Neurology, Chungnam National University Hospital , Daejeon, Republic of Korea
| | - Shin Kwang Kang
- 6 Department of Thoracic and Cardiovascular Surgery, Chungnam National University Hospital , Daejeon, Republic of Korea
| | - Nara Shin
- 2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,7 Department of Anatomy, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Dong Woon Kim
- 2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,7 Department of Anatomy, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Seon-Ah Jin
- 8 Division of Cardiology, Department of Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine , Daejeon, Republic of Korea
| | - Jin-Ok Jeong
- 8 Division of Cardiology, Department of Medicine, Chungnam National University Hospital, Chungnam National University School of Medicine , Daejeon, Republic of Korea
| | - Kaikobad Irani
- 9 Division of Cardiovascular Medicine, Department of Internal Medicine, University of Iowa Carver College of Medicine , Iowa City, Iowa
| | - Byeong Hwa Jeon
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Minho Shong
- 3 Department of Endocrinology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Gi Ryang Kweon
- 2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,4 Department of Biochemistry, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
| | - Cuk-Seong Kim
- 1 Department of Physiology, School of Medicine, Chungnam National University , Daejeon, Republic of Korea.,2 Department of Medical Science, School of Medicine, Chungnam National University , Daejeon, Republic of Korea
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21
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Jang Y, Lee MJ, Han J, Kim SJ, Ryu I, Ju X, Ryu MJ, Chung W, Oh E, Kweon GR, Heo JY. A High-fat Diet Induces a Loss of Midbrain Dopaminergic Neuronal Function That Underlies Motor Abnormalities. Exp Neurobiol 2017; 26:104-112. [PMID: 28442947 PMCID: PMC5403908 DOI: 10.5607/en.2017.26.2.104] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 03/16/2017] [Revised: 04/03/2017] [Accepted: 04/05/2017] [Indexed: 12/16/2022] Open
Abstract
Movement defects in obesity are associated with peripheral muscle defects, arthritis, and dysfunction of motor control by the brain. Although movement functionality is negatively correlated with obesity, the brain regions and downstream signaling pathways associated with movement defects in obesity are unclear. A dopaminergic neuronal pathway from the substantia nigra (SN) to the striatum is responsible for regulating grip strength and motor initiation through tyrosine hydroxylase (TH) activity-dependent dopamine release. We found that mice fed a high-fat diet exhibited decreased movement in open-field tests and an increase in missteps in a vertical grid test compared with normally fed mice. This motor abnormality was associated with a significant reduction of TH in the SN and striatum. We further found that phosphorylation of c-Jun N-terminal kinase (JNK), which modulates TH expression in the SN and striatum, was decreased under excess-energy conditions. Our findings suggest that high calorie intake impairs motor function through JNK-dependent dysregulation of TH in the SN and striatum.
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Affiliation(s)
- Yunseon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jeongsu Han
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Ilhwan Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Xianshu Ju
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Woosuk Chung
- Department of Anesthesiology and Pain Medicine, Chungnam National University Hospital, Daejeon 35015, Korea
| | - Eungseok Oh
- Department of Neurology, Chungnam National University Hospital, Daejeon 35015, Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 35015, Korea.,Brain Research Institute, Chungnam National University School of Medicine, Daejeon 35015, Korea
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22
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Kang SG, Yi HS, Choi MJ, Ryu MJ, Jung S, Chung HK, Chang JY, Kim YK, Lee SE, Kim HW, Choi H, Kim DS, Lee JH, Kim KS, Kim HJ, Lee CH, Oike Y, Shong M. ANGPTL6 expression is coupled with mitochondrial OXPHOS function to regulate adipose FGF21. J Endocrinol 2017; 233:105-118. [PMID: 28184000 DOI: 10.1530/joe-16-0549] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 02/09/2017] [Indexed: 12/20/2022]
Abstract
Recent studies revealed that the inhibition of mitochondrial oxidative phosphorylation (OXPHOS) is coupled with the mitochondrial unfolded protein response, thereby stimulating the secretion of non-cell autonomous factors, which may control systemic energy metabolism and longevity. However, the nature and roles of non-cell autonomous factors induced in adipose tissue in response to reduced OXPHOS function remain to be clarified in mammals. CR6-interacting factor 1 (CRIF1) is an essential mitoribosomal protein for the intramitochondrial production of mtDNA-encoded OXPHOS subunits. Deficiency of CRIF1 impairs the proper formation of the OXPHOS complex, resulting in reduced function. To determine which secretory factors are induced in response to reduced mitochondrial OXPHOS function, we analyzed gene expression datasets in Crif1-depleted mouse embryonic fibroblasts. Crif1 deficiency preferentially increased the expression of angiopoietin-like 6 (Angptl6) and did not affect other members of the ANGPTL family. Moreover, treatment with mitochondrial OXPHOS inhibitors increased the expression of Angptl6 in cultured adipocytes. To confirm Angptl6 induction in vivo, we generated a murine model of reduced mitochondrial OXPHOS function using adipose tissue-specific Crif1-deficient mice and verified the upregulation of Angptl6 and fibroblast growth factor 21 (Fgf21) in white adipose tissue. Treatment with recombinant ANGPTL6 protein increased oxygen consumption and Pparα expression through the extracellular signal-regulated kinase/mitogen-activated protein kinase pathway in cultured adipocytes. Furthermore, the ANGPTL6-mediated increase in Pparα expression resulted in increased FGF21 expression, thereby promoting β-oxidation. In conclusion, mitochondrial OXPHOS function governs the expression of ANGPTL6, which is an essential factor for FGF21 production in adipose tissue and cultured adipocytes.
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Affiliation(s)
- Seul Gi Kang
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
- Department of Medical ScienceChungnam National University School of Medicine, Daejeon, Korea
| | - Hyon-Seung Yi
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
- Department of Medical ScienceChungnam National University School of Medicine, Daejeon, Korea
| | | | - Saetbyel Jung
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Hyo Kyun Chung
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Joon Young Chang
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
- Department of Medical ScienceChungnam National University School of Medicine, Daejeon, Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
- Department of Medical ScienceChungnam National University School of Medicine, Daejeon, Korea
| | - Hyeon-Woo Kim
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
- Department of Medical ScienceChungnam National University School of Medicine, Daejeon, Korea
| | - Hoil Choi
- Department of BiochemistryChungnam National University School of Medicine, Daejeon, Korea
| | - Dong Seok Kim
- Department of BiochemistryChungnam National University School of Medicine, Daejeon, Korea
| | - Ju Hee Lee
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Hyun Jin Kim
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
| | - Chul-Ho Lee
- Animal Model CenterKorea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Yuichi Oike
- Department of Molecular GeneticsGraduate School of Medical Sciences, Kumamoto University, Chuo-ku, Kumamoto, Japan
| | - Minho Shong
- Research Center for Endocrine and Metabolic DiseasesChungnam National University School of Medicine, Daejeon, Korea
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23
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Chung W, Ryu MJ, Heo JY, Lee S, Yoon S, Park H, Park S, Kim Y, Kim YH, Yoon SH, Shin YS, Lee WH, Ju X, Kweon GR, Ko Y. Sevoflurane Exposure during the Critical Period Affects Synaptic Transmission and Mitochondrial Respiration but Not Long-term Behavior in Mice. Anesthesiology 2017; 126:288-299. [DOI: 10.1097/aln.0000000000001470] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Abstract
Background
Anesthesia during the synaptogenic period induces dendritic spine formation, which may affect neurodevelopment. The authors, therefore, evaluated whether changes in synaptic transmission after dendritic spine formation induced by sevoflurane were associated with long-term behavioral changes. The effects of sevoflurane on mitochondrial function were also assessed to further understand the mechanism behind spinogenesis.
Methods
Postnatal day 16 to 17 mice were exposed to sevoflurane (2.5% for 2 h), and synaptic transmission was measured in the medial prefrontal cortex 6 h or 5 days later. The expression of postsynaptic proteins and mitochondrial function were measured after anesthesia. Long-term behavioral changes were assessed in adult mice.
Results
Sevoflurane increased the expression of excitatory postsynaptic proteins in male and female mice (n = 3 to 5 per group). Sevoflurane exposure in male mice transiently increased miniature excitatory postsynaptic current frequency (control: 8.53 ± 2.87; sevoflurane: 11.09 ± 2.58) but decreased miniature inhibitory postsynaptic current frequency (control: 10.18 ± 4.66; sevoflurane: 6.88 ± 2.15). Unexpectedly, sevoflurane increased miniature inhibitory postsynaptic current frequency (control: 1.81 ± 1.11; sevoflurane: 3.56 ± 1.74) in female mice (neurons, n = 10 to 21 per group). Sevoflurane also increased mitochondrial respiration in male mice (n = 5 to 8 per group). However, such changes from anesthesia during the critical period did not induce long-term behavioral consequences. Values are presented as mean ± SD.
Conclusions
Sevoflurane exposure during the critical period induces mitochondrial hyperactivity and transient imbalance of excitatory/inhibitory synaptic transmission, without long-lasting behavioral consequences. Further studies are needed to confirm sexual differences and to define the role of mitochondrial activity during anesthesia-induced spine formation.
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Affiliation(s)
- Woosuk Chung
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Min Jeong Ryu
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Jun Young Heo
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Soomin Lee
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Seunghwan Yoon
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Haram Park
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Sangil Park
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Yangsik Kim
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Yoon Hee Kim
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Seok Hwa Yoon
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Yong Sup Shin
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Won Hyung Lee
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Xianshu Ju
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Gi Ryang Kweon
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
| | - Youngkwon Ko
- From the Department of Anesthesia and Pain Medicine, Chungnam National University, Daejeon, South Korea (W.C., S.L., S.Y., S.P., Y.H.K., S.H.Y., Y.S.S., W.H.L., Y.K.); Departments of Biochemistry (M.J.R., J.Y.H., G.R.K.) and Medical Science (J.Y.H., X.J.), Chungnam National University School of Medicine, Daejeon, South Korea; and Departments of Biological Sciences (H.P.) and Biomedical Sciences (
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24
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Chung HK, Ryu D, Kim KS, Chang JY, Kim YK, Yi HS, Kang SG, Choi MJ, Lee SE, Jung SB, Ryu MJ, Kim SJ, Kweon GR, Kim H, Hwang JH, Lee CH, Lee SJ, Wall CE, Downes M, Evans RM, Auwerx J, Shong M. Growth differentiation factor 15 is a myomitokine governing systemic energy homeostasis. J Cell Biol 2016; 216:149-165. [PMID: 27986797 PMCID: PMC5223607 DOI: 10.1083/jcb.201607110] [Citation(s) in RCA: 222] [Impact Index Per Article: 27.8] [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: 07/26/2016] [Revised: 10/09/2016] [Accepted: 11/30/2016] [Indexed: 01/06/2023] Open
Abstract
Chung et al. show that the myomitokine GDF15 can act to modulate oxidative and lipolytic function in a non–cell-autonomous manner, thereby regulating systemic energy homeostasis in skeletal muscle-specific Crif1-deficient mice. This pathway may be a potential therapeutic target for preventing the onset of obesity and insulin resistance. Reduced mitochondrial electron transport chain activity promotes longevity and improves energy homeostasis via cell-autonomous and –non-autonomous factors in multiple model systems. This mitohormetic effect is thought to involve the mitochondrial unfolded protein response (UPRmt), an adaptive stress-response pathway activated by mitochondrial proteotoxic stress. Using mice with skeletal muscle–specific deficiency of Crif1 (muscle-specific knockout [MKO]), an integral protein of the large mitoribosomal subunit (39S), we identified growth differentiation factor 15 (GDF15) as a UPRmt-associated cell–non-autonomous myomitokine that regulates systemic energy homeostasis. MKO mice were protected against obesity and sensitized to insulin, an effect associated with elevated GDF15 secretion after UPRmt activation. In ob/ob mice, administration of recombinant GDF15 decreased body weight and improved insulin sensitivity, which was attributed to elevated oxidative metabolism and lipid mobilization in the liver, muscle, and adipose tissue. Thus, GDF15 is a potent mitohormetic signal that safeguards against the onset of obesity and insulin resistance.
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Affiliation(s)
- Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Dongryeol Ryu
- Laboratory for Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Joon Young Chang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Hyon-Seung Yi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Seul Gi Kang
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea.,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Saet-Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Min Jeong Ryu
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Soung Jung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 34134, South Korea
| | - Hail Kim
- Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-338, South Korea
| | - Jung Hwan Hwang
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-764, South Korea
| | - Chul-Ho Lee
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-764, South Korea
| | - Se-Jin Lee
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD 21205
| | | | - Michael Downes
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037
| | - Ronald M Evans
- Gene Expression Laboratory, Salk Institute, La Jolla, CA 92037
| | - Johan Auwerx
- Laboratory for Integrative and Systems Physiology, École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, South Korea .,Department of Medical Science, Chungnam National University School of Medicine, Daejeon 34134, South Korea
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25
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Jang Y, Han J, Kim SJ, Kim J, Lee MJ, Jeong S, Ryu MJ, Seo KS, Choi SY, Shong M, Lim K, Heo JY, Kweon GR. Suppression of mitochondrial respiration with auraptene inhibits the progression of renal cell carcinoma: involvement of HIF-1α degradation. Oncotarget 2016; 6:38127-38. [PMID: 26474388 PMCID: PMC4741988 DOI: 10.18632/oncotarget.5511] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2015] [Accepted: 09/29/2015] [Indexed: 12/14/2022] Open
Abstract
Renal cell carcinoma (RCC) progression resulting from the uncontrolled migration and enhanced angiogenesis is an obstacle to effective therapeutic intervention. Tumor metabolism has distinctive feature called Warburg effect, which enhances the aerobic glycolysis rapidly supplying the energy for migration of tumor. To manipulate this metabolic change characteristic of aggressive tumors, we utilized the citrus extract, auraptene, known as a mitochondrial inhibitor, testing its anticancer effects against the RCC4 cell line. We found that auraptene impaired RCC4 cell motility through reduction of mitochondrial respiration and glycolytic pathway-related genes. It also strongly disrupted VEGF-induced angiogenesis in vitro and in vivo. Hypoxia-inducible factor 1a (HIF-1a), a key regulator of cancer metabolism, migration and angiogenesis that is stably expressed in RCCs by virtue of a genetic mutation in the von Hippel–Lindau (VHL) tumor-suppressor protein, was impeded by auraptene, which blocked HIF-1a translation initiation without causing cytotoxicity. We suggest that blockade HIF-1a and reforming energy metabolism with auraptene is an effective approach for suspension RCC progression.
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Affiliation(s)
- Yunseon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Jeongsu Han
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Jungim Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Soyeon Jeong
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747.,Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Kang-Sik Seo
- R&D Center, KT&G Life Sciences, Suwon, Republic of Korea, 443-702
| | - Song-Yi Choi
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Minho Shong
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Kyu Lim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747.,Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747.,Brain research institute, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747.,Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon, Republic of Korea, 301-747
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26
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Kang YE, Kim JM, Joung KH, Lee JH, You BR, Choi MJ, Ryu MJ, Ko YB, Lee MA, Lee J, Ku BJ, Shong M, Lee KH, Kim HJ. The Roles of Adipokines, Proinflammatory Cytokines, and Adipose Tissue Macrophages in Obesity-Associated Insulin Resistance in Modest Obesity and Early Metabolic Dysfunction. PLoS One 2016; 11:e0154003. [PMID: 27101398 PMCID: PMC4839620 DOI: 10.1371/journal.pone.0154003] [Citation(s) in RCA: 176] [Impact Index Per Article: 22.0] [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: 11/25/2015] [Accepted: 03/22/2016] [Indexed: 12/15/2022] Open
Abstract
The roles of adipokines, proinflammatory cytokines, and adipose tissue macrophages in obesity-associated insulin resistance have been explored in both animal and human studies. However, our current understanding of obesity-associated insulin resistance relies on studies of artificial metabolic extremes. The purpose of this study was to explore the roles of adipokines, proinflammatory cytokines, and adipose tissue macrophages in human patients with modest obesity and early metabolic dysfunction. We obtained omental adipose tissue and fasting blood samples from 51 females undergoing gynecologic surgery. We investigated serum concentrations of proinflammatory cytokines and adipokines as well as the mRNA expression of proinflammatory and macrophage phenotype markers in visceral adipose tissue using ELISA and quantitative RT-PCR. We measured adipose tissue inflammation and macrophage infiltration using immunohistochemical analysis. Serum levels of adiponectin and leptin were significantly correlated with HOMA-IR and body mass index. The levels of expression of MCP-1 and TNF-α in visceral adipose tissue were also higher in the obese group (body mass index ≥ 25). The expression of mRNA MCP-1 in visceral adipose tissue was positively correlated with body mass index (r = 0.428, p = 0.037) but not with HOMA-IR, whereas TNF-α in visceral adipose tissue was correlated with HOMA-IR (r = 0.462, p = 0.035) but not with body mass index. There was no obvious change in macrophage phenotype or macrophage infiltration in patients with modest obesity or early metabolic dysfunction. Expression of mRNA CD163/CD68 was significantly related to mitochondrial-associated genes and serum inflammatory cytokine levels of resistin and leptin. These results suggest that changes in the production of inflammatory biomolecules precede increased immune cell infiltration and induction of a macrophage phenotype switch in visceral adipose tissue. Furthermore, serum resistin and leptin have specific roles in the regulation of adipose tissue macrophages in patients with modest obesity or early metabolic dysfunction.
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Affiliation(s)
- Yea Eun Kang
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Ji Min Kim
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Kyong Hye Joung
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Ju Hee Lee
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Bo Ram You
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Min Jeong Choi
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Min Jeong Ryu
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
| | - Young Bok Ko
- Department of Obstetrics and Gynecology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Min A. Lee
- Department of Obstetrics and Gynecology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Junguee Lee
- Department of Pathology, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Republic of Korea
| | - Bon Jeong Ku
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
- Department of internal medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Minho Shong
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
- Department of internal medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Ki Hwan Lee
- Department of Obstetrics and Gynecology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Hyun Jin Kim
- Department of Internal medicine, Chungnam National University Hospital, Daejeon, Republic of Korea
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Ko BW, Han J, Heo JY, Jang Y, Kim SJ, Kim J, Lee MJ, Ryu MJ, Song IC, Jo YS, Kweon GR. Metabolic characterization of imatinib-resistant BCR-ABL T315I chronic myeloid leukemia cells indicates down-regulation of glycolytic pathway and low ROS production. Leuk Lymphoma 2016; 57:2180-8. [PMID: 26854822 DOI: 10.3109/10428194.2016.1142086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Long-term imatinib treatment induces drug-resistant chronic myeloid leukemia (CML) cells harboring T315I gate keeper mutation of breakpoint cluster region (BCR)-ABL oncogenic kinase. However, although cell proliferation is coupled with cellular energy status in CML carcinogenesis, the metabolic characteristics of T315I-mutant CML cells have never been investigated. Here, we analyzed cell proliferation activities and metabolic phenotypes, including cell proliferation, oxygen consumption, lactate production, and redox state in the KBM5 (imatinib-sensitive) and KBM5-T315I (imatinib-resistant) CML cell lines. Interestingly, KBM5-T315I cells showed decreased cell proliferation, lactate production, fatty acid synthesis, ROS production, and down regulation of mRNA expression related to ROS scavengers, such as SOD2, catalase, GCLm, and GPx1. Taken together, our data demonstrate that the lower growth ability of KBM5-T315I CML cells might be related to the decreased expression of glycolysis-related genes and ROS levels, and this will be used to identify therapeutic targets for imatinib resistance in CML.
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Affiliation(s)
- Byung Woong Ko
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Jeongsu Han
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Jun Young Heo
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea ;,b Brain Research Institute , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Yunseon Jang
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Soo Jeong Kim
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Jungim Kim
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Min Joung Lee
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Min Jeong Ryu
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea ;,c Research Institute for Medical Science , Chungnam National University School of Medicine , Daejeon , Republic of Korea
| | - Ik Chan Song
- d Division of Hematology/Oncology, Department of Internal Medicine , Chungnam National University Hospital , Deajeon , Republic of Korea
| | - Young Suk Jo
- e Research Center for Endocrine and Metabolic Diseases , Chungnam National University School of Medicine , Deajeon , Republic of Korea
| | - Gi Ryang Kweon
- a Department of Biochemistry , Chungnam National University School of Medicine , Daejeon , Republic of Korea ;,c Research Institute for Medical Science , Chungnam National University School of Medicine , Daejeon , Republic of Korea
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Kim J, Han J, Jang Y, Kim SJ, Lee MJ, Ryu MJ, Kweon GR, Heo JY. High-capacity glycolytic and mitochondrial oxidative metabolisms mediate the growth ability of glioblastoma. Int J Oncol 2015. [PMID: 26202438 DOI: 10.3892/ijo.2015.3101] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Among the primary brain tumors, glioblastoma multiforme (GBM) has a radical proliferation ability that complicates the therapeutic modulation of cancer progression. The majority of GBM patients have a low survival rate (<1 year) due to radical tumor growth and late cancer diagnosis. Previous reports have shown that astrocytes have a specific metabolic organization that includes the production of lactate, the storage of glycogen, and use of lactate to support neurons which possess higher capacity of metabolism compared to neurons. We hypothesized that these characteristics of astrocytes could contribute to enhanced proliferation of GBM compared to neuroblastoma (NB). Here, we show that U87MG cells (a model of GBM) proliferate more rapidly than SH-SY5Y cells (a model of NB). A higher extracellular acidification rate and maximal mitochondrial oxygen consumption rate were observed in U87MG cells compared to SH-SY5Y cells. The expression levels of lactate dehydrogenase (LDH)-A and LDH-B were higher in U87MG cells and primary cultured astrocytes than in SH-SY5Y cells and neurons. Furthermore, the mRNA levels of succinate dehydrogenase and peroxisome proliferator-activated receptor-γ were high in U87MG cells, suggesting that these cells have high capacity for mitochondrial metabolism and uptake of fatty acids related to synthesis of the cell membrane, respectively. Taken together, we demonstrate that GBM cells are characterized by activation of the LDH-expression-related glycolytic pathway and mitochondrial metabolic capacity, suggesting two innate properties of astrocytes that could provide a driving force for the growth ability of GBM. Based on these findings, we propose that therapeutic approaches aimed at treating GBM could target LDH for modulating the metabolic properties of GBM cells.
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Affiliation(s)
- Jungim Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Jeongsu Han
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Yunseon Jang
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Soo Jeong Kim
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Min Joung Lee
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Min Jeong Ryu
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Gi Ryang Kweon
- Research Institute for Medical Science, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
| | - Jun Young Heo
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon 301-747, Republic of Korea
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Chung HK, Kim YK, Park JH, Ryu MJ, Chang JY, Hwang JH, Lee CH, Kim SH, Kim HJ, Kweon GR, Kim KS, Shong M. The indole derivative NecroX-7 improves nonalcoholic steatohepatitis in ob/ob mice through suppression of mitochondrial ROS/RNS and inflammation. Liver Int 2015; 35:1341-53. [PMID: 25443620 DOI: 10.1111/liv.12741] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 11/13/2014] [Indexed: 02/13/2023]
Abstract
BACKGROUND & AIMS Nonalcoholic steatohepatitis (NASH) is associated with cirrhosis and hepatocellular carcinoma. Reactive oxygen species (ROS) and reactive nitrogen species (RNS) play key roles in the development of the disease. However, the therapeutic target of NASH has not been fully defined and new treatments are needed. We investigated the protective effects of the antioxidant indole-derived NecroX-7 in a NASH mouse model using leptin-deficient ob/ob and methionine- and choline-deficient (MCD) diet-fed ob/ob mice. METHODS Six-week-old male mice were divided into three groups: ob/+ mice, ob/ob mice treated with vehicle and ob/ob mice treated daily with NecroX-7 (20 mg/kg) for 4 weeks. To study the effects of NecroX-7 in a fibrosis model, NASH was induced by feeding ob/ob mice an MCD diet. The effects of NecroX-7 on NASH progression were evaluated using biochemical, histological and molecular markers. RESULTS NecroX-7-treated ob/ob mice had a marked decrease in serum aspartate aminotransferase and alanine transaminase compared with vehicle-treated controls. Interestingly, hepatic steatosis and lipid peroxidation were significantly improved by NecroX-7 treatment. NecroX-7 inhibited tert-butylhydroperoxide- and H2 O2 -induced mitochondrial ROS/RNS in primary hepatocytes and attenuated mitochondrial dysfunction in vitro and in vivo. Furthermore, NecroX-7-treated mice exhibited fewer infiltrating macrophages and reduced hepatic tumour necrosis factor-alpha expression. Hepatic fibrosis in MCD-fed ob/ob mice was significantly decreased by NecroX-7 treatment. CONCLUSIONS NecroX-7 treatment improved hepatic steatosis and fibrosis in murine NASH models. These effects occurred through the suppression of whole-cell ROS/RNS and inflammatory responses and suggest that NecroX-7 has a potential therapeutic benefit in steatohepatitis.
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Affiliation(s)
- Hyo Kyun Chung
- Research Center for Endocrine & Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
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Kim YK, Joung KH, Ryu MJ, Kim SJ, Kim H, Chung HK, Lee MH, Lee SE, Choi MJ, Chang JY, Hong HJ, Kim KS, Lee SH, Kweon GR, Kim H, Lee CH, Kim HJ, Shong M. Disruption of CR6-interacting factor-1 (CRIF1) in mouse islet beta cells leads to mitochondrial diabetes with progressive beta cell failure. Diabetologia 2015; 58:771-80. [PMID: 25660120 DOI: 10.1007/s00125-015-3506-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/30/2014] [Indexed: 12/25/2022]
Abstract
AIM/HYPOTHESIS Although mitochondrial oxidative phosphorylation (OxPhos) dysfunction is believed to be responsible for beta cell dysfunction in insulin resistance and mitochondrial diabetes, the mechanisms underlying progressive beta cell failure caused by defective mitochondrial OxPhos are largely unknown. METHODS We examined the in vivo phenotypes of beta cell dysfunction in beta cell-specific Crif1 (also known as Gadd45gip1)-deficient mice. CR6-interacting factor-1 (CRIF1) is a mitochondrial protein essential for the synthesis and formation of the OxPhos complex in the inner mitochondrial membrane. RESULTS Crif1(beta-/-) mice exhibited impaired glucose tolerance with defective insulin secretion as early as 4 weeks of age without defects in islet structure. At 11 weeks of age, Crif1(beta-/-) mice displayed characteristic ultrastructural mitochondrial abnormalities as well as severe glucose intolerance. Furthermore, islet area and insulin content was decreased by approximately 50% compared with wild-type mice. Treatment with the glucoregulatory drug exenatide, a glucagon-like peptide-1 (GLP-1) agonist, was not sufficient to preserve beta cell function in Crif1(beta-/-) mice. CONCLUSIONS/INTERPRETATION Our results indicate that mitochondrial OxPhos dysfunction triggers progressive beta cell failure that is not halted by treatment with a GLP-1 agonist. The Crif1(beta-/-) mouse is a useful model for the study of beta cell failure caused by mitochondrial OxPhos dysfunction.
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Affiliation(s)
- Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, 301-721, Korea
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Lee MH, Lee JU, Joung KH, Kim YK, Ryu MJ, Lee SE, Kim SJ, Chung HK, Choi MJ, Chang JY, Lee SH, Kweon GR, Kim HJ, Kim KS, Kim SM, Jo YS, Park J, Cheng SY, Shong M. Thyroid dysfunction associated with follicular cell steatosis in obese male mice and humans. Endocrinology 2015; 156:1181-93. [PMID: 25555091 PMCID: PMC5393324 DOI: 10.1210/en.2014-1670] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Adult thyroid dysfunction is a common endocrine disorder associated with an increased risk of cardiovascular disease and mortality. A recent epidemiologic study revealed a link between obesity and increased prevalence of hypothyroidism. It is conceivable that excessive adiposity in obesity might lead to expansion of the interfollicular adipose (IFA) depot or steatosis in thyroid follicular cells (thyroid steatosis, TS). In this study, we investigated the morphological and functional changes in thyroid glands of obese humans and animal models, diet-induced obese (DIO), ob/ob, and db/db mice. Expanded IFA depot and TS were observed in obese patients. Furthermore, DIO mice showed increased expression of lipogenesis-regulation genes, such as sterol regulatory element binding protein 1 (SREBP-1), peroxisome proliferator-activated receptor γ (PPARγ), acetyl coenzyme A carboxylase (ACC), and fatty acid synthetase (FASN) in the thyroid gland. Steatosis and ultrastructural changes, including distension of the endoplasmic reticulum (ER) and mitochondrial distortion in thyroid follicular cells, were uniformly observed in DIO mice and genetically obese mouse models, ob/ob and db/db mice. Obese mice displayed a variable degree of primary thyroid hypofunction, which was not corrected by PPARγ agonist administration. We propose that systemically increased adiposity is associated with characteristic IFA depots and TS and may cause or influence the development of primary thyroid failure.
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Affiliation(s)
- Min Hee Lee
- Research Center for Endocrine and Metabolic Diseases (M.H.L., K.H.J., Y.K.K., M.J.R., S.E.L., S.J.K., H.K.C., M.J.C., J.Y.C., H.J.K., K.S.K., Y.S.J., M.C.), Chungnam National University School of Medicine, Daejeon 301-721, Republic of Korea; Department of Pathology (J.U.L.), Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon 301-723, Republic of Korea; Department of Biomedical Science (S.-H.L.), Korea Advanced Institute of Biological Science, Daejeon 305-701, Korea; Department of Biochemistry (G.R.K.), Chungnam National University School of Medicine, Daejeon 301-721, Republic of Korea; Department of Nuclear Medicine (S.-M.K.), Chungnam National University and Hospital, Daejeon 301-721, Republic of Korea; and Laboratory of Molecular Biology (J.P., S.-Y.C.), National Cancer Institute, Bethesda, Maryland 20892
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Lee J, Kim KS, Lee MH, Kim YS, Lee MH, Lee SE, Kim YK, Ryu MJ, Kim SJ, Choi MJ, Jo YS. NAD(P)H: quinone oxidoreductase 1 and NRH:quinone oxidoreductase 2 polymorphisms in papillary thyroid microcarcinoma: correlation with phenotype. Yonsei Med J 2013; 54:1158-67. [PMID: 23918565 PMCID: PMC3743184 DOI: 10.3349/ymj.2013.54.5.1158] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [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] [Indexed: 12/13/2022] Open
Abstract
PURPOSE NAD(P)H:Quinone Oxidoreductase 1 (NQO1) C609T missense variant (NQO1*2) and 29 basepair (bp)-insertion/deletion (I29/D) polymorphism of the NRH:Quinone Oxidoreductase 2 (NQO2) gene promoter have been proposed as predictive and prognostic factors for cancer development and progression. The purpose of this study is to investigate the relationship between NQO1/NQO2 genotype and clinico-pathological features of papillary thyroid microcarcinoma (PTMC). MATERIALS AND METHODS Genomic DNA was isolated from 243 patients; and clinical data were retrospectively analyzed. NQO1*2 and tri-allelic polymorphism of NQO2 were investigated by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP) analysis. RESULTS PTMC with NQO1*2 frequently exhibited extra-thyroidal extension as compared to PTMC with wild-type NQO1 (p=0.039). There was a significant relationship between I29/I29 homozygosity of NQO2 and lymph node metastasis (p=0.042). Multivariate analysis showed that the I29/I29 genotype was associated with an increased risk of lymph node metastasis (OR, 2.24; 95% CI, 1.10-4.56; p=0.026). CONCLUSION NQO1*2 and I29 allele of the NQO2 are associated with aggressive clinical phenotypes of PTMC, and the I29 allele represents a putative prognostic marker for PTMC.
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Affiliation(s)
- Junguee Lee
- Department of Pathology, Daejeon St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Daejeon, Korea
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Daejeon, Korea
| | - Min Ho Lee
- College of Biological Sciences and Biotechnology, Department of Bioscience, Chungnam National University, Daejeon, Korea
| | - Yeon Soo Kim
- Cheong Shim International Academy, Gapyeong, Korea
| | - Min Hee Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seong Eun Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Yong Kyung Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Ryu
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Soung Jung Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Choi
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Young Suk Jo
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Daejeon, Korea
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Lee SE, Lee JU, Lee MH, Ryu MJ, Kim SJ, Kim YK, Choi MJ, Kim KS, Kim JM, Kim JW, Koh YW, Lim DS, Jo YS, Shong M. RAF kinase inhibitor-independent constitutive activation of Yes-associated protein 1 promotes tumor progression in thyroid cancer. Oncogenesis 2013; 2:e55. [PMID: 23857250 PMCID: PMC3740284 DOI: 10.1038/oncsis.2013.12] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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: 11/22/2012] [Revised: 04/20/2013] [Accepted: 04/26/2013] [Indexed: 12/16/2022] Open
Abstract
The transcription coactivator Yes-associated protein 1 (YAP1) is regulated by the Hippo tumor suppressor pathway. However, the role of YAP1 in thyroid cancer, which is frequently associated with the BRAFV600E mutation, remains unknown. This study aimed to investigate the role of YAP1 in thyroid cancer. YAP1 was overexpressed in papillary (PTC) and anaplastic thyroid cancer, and nuclear YAP1 was more frequently detected in BRAFV600E (+) PTC. In the thyroid cancer cell lines TPC-1 and HTH7, which do not have the BRAFV600E mutation, YAP1 was cytosolic and inactive at high cell densities. In contrast, YAP1 was retained in the nucleus and its target genes were expressed in the thyroid cancer cells 8505C and K1, which harbor the BRAFV600E mutation, regardless of cell density. Furthermore, the nuclear activation of YAP1 in 8505C was not inhibited by RAF or MEK inhibitor. In vitro experiments, YAP1 silencing or overexpression affected migratory capacities of 8505C and TPC-1 cells. YAP1 knockdown resulted in marked decrease of tumor volume, invasion and distant metastasis in orthotopic tumor xenograft mouse models using the 8505C thyroid cancer cell line. Taken together, YAP1 is involved in the tumor progression of thyroid cancer and YAP1-mediated effects might not be affected by the currently used RAF kinase inhibitors.
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Affiliation(s)
- S E Lee
- Department of Internal Medicine, Research Center for Endocrine and Metabolic Disease, Chungnam National University School of Medicine, Daejeon, Korea
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Ryu MJ, Kim SJ, Kim YK, Choi MJ, Tadi S, Lee MH, Lee SE, Chung HK, Jung SB, Kim HJ, Jo YS, Kim KS, Lee SH, Kim JM, Kweon GR, Park KC, Lee JU, Kong YY, Lee CH, Chung J, Shong M. Crif1 deficiency reduces adipose OXPHOS capacity and triggers inflammation and insulin resistance in mice. PLoS Genet 2013; 9:e1003356. [PMID: 23516375 PMCID: PMC3597503 DOI: 10.1371/journal.pgen.1003356] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 01/17/2013] [Indexed: 12/19/2022] Open
Abstract
Impaired mitochondrial oxidative phosphorylation (OXPHOS) has been proposed as an etiological mechanism underlying insulin resistance. However, the initiating organ of OXPHOS dysfunction during the development of systemic insulin resistance has yet to be identified. To determine whether adipose OXPHOS deficiency plays an etiological role in systemic insulin resistance, the metabolic phenotype of mice with OXPHOS-deficient adipose tissue was examined. Crif1 is a protein required for the intramitochondrial production of mtDNA-encoded OXPHOS subunits; therefore, Crif1 haploinsufficient deficiency in mice results in a mild, but specific, failure of OXPHOS capacity in vivo. Although adipose-specific Crif1-haploinsufficient mice showed normal growth and development, they became insulin-resistant. Crif1-silenced adipocytes showed higher expression of chemokines, the expression of which is dependent upon stress kinases and antioxidant. Accordingly, examination of adipose tissue from Crif1-haploinsufficient mice revealed increased secretion of MCP1 and TNFα, as well as marked infiltration by macrophages. These findings indicate that the OXPHOS status of adipose tissue determines its metabolic and inflammatory responses, and may cause systemic inflammation and insulin resistance.
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Affiliation(s)
- Min Jeong Ryu
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Soung Jung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Surendar Tadi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Hee Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Saet Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Hyun-Jin Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Young Suk Jo
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
| | - Sang-Hee Lee
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Jin Man Kim
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Korea
| | - Gi Ryang Kweon
- Department of Biochemistry, Chungnam National University School of Medicine, Daejeon, Korea
| | - Ki Cheol Park
- Department of Pathology, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - Jung Uee Lee
- Department of Pathology, Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - Young Yun Kong
- School of Biological Sciences, Seoul National University, Seoul, Korea
| | - Chul-Ho Lee
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Korea
| | - Jongkyeong Chung
- School of Biological Sciences, Seoul National University, Seoul, Korea
| | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon, Korea
- * E-mail:
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35
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Ryu MJ, Kim SJ, Choi MJ, Kim YK, Lee MH, Lee SE, Chung HK, Jung SB, Kim HJ, Kim KS, Jo YS, Kweon GR, Lee CH, Shong M. Mitochondrial oxidative phosphorylation reserve is required for hormone- and PPARγ agonist-induced adipogenesis. Mol Cells 2013; 35:134-41. [PMID: 23456335 PMCID: PMC3887907 DOI: 10.1007/s10059-012-2257-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 10/15/2012] [Indexed: 01/27/2023] Open
Abstract
Adipocyte differentiation requires the coordinated activities of several nuclear transcription factors. Recently, mitochondria biogenesis was reported to occur during adipocyte differentiation and following treatment with thiazolidinediones in vitro and in vivo. Crif1 is a translational factor for mitochondrial DNA (mtDNA) and is important for transcription of the mitochondrial oxidative phosphorylation (OXPHOS) complex. To investigate the role of OXPHOS in adipogenesis, we analyzed adipocyte differentiation following disruption of Crif1 in vitro and in vivo. The adipose-specific Crif1 knockout mouse had a lower body weight and less fat mass than wild-type mice. Furthermore, adipocytes were smaller and had a dysplastic morphology in the adipose-specific Crif1 knockout mouse. 3T3-L1 adipocytes or adipose-derived stem cells (ADSCs) that lacked Crif1 expressed lower levels of mtDNA-encoded OXPHOS subunits, and adipocyte differentiation was disrupted. Rosiglitazone treatment did not induce adipogenesis or mitochondria biogenesis in Crif1 knockout ADSCs. These results show that mitochondrial OXPHOS and Crif1 are required for rosiglitazone- and hormone-induced adipogenesis.
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Affiliation(s)
- Min Jeong Ryu
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Soung Jung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Min Jeong Choi
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Yong Kyung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Min Hee Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Seong Eun Lee
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Hyo Kyun Chung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Saet Byel Jung
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Hyun-Jin Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Koon Soon Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | - Young Suk Jo
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
| | | | | | - Minho Shong
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon,
Korea
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Tadi S, Kim SJ, Ryu MJ, Park T, Jeong JS, Kim YH, Kweon GR, Shong M, Yim YH. Metabolic Rebalancing of CR6 Interaction Factor 1-Deficient Mouse Embryonic Fibroblasts: A Mass Spectrometry-Based Metabolic Analysis. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.35] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Du J, Liu Y, Meline B, Kong G, Tan LX, Lo JC, Wang J, Ranheim E, Zhang L, Chang YI, Ryu MJ, Zhang JF, Zhang J. Loss of CD44 attenuates aberrant GM-CSF signaling in Kras G12D hematopoietic progenitor/precursor cells and prolongs the survival of diseased animals. Leukemia 2012; 27:754-7. [PMID: 22976127 DOI: 10.1038/leu.2012.251] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Kim SJ, Kwon MC, Ryu MJ, Chung HK, Tadi S, Kim YK, Kim JM, Lee SH, Park JH, Kweon GR, Ryu SW, Jo YS, Lee CH, Hatakeyama H, Goto YI, Yim YH, Chung J, Kong YY, Shong M. CRIF1 is essential for the synthesis and insertion of oxidative phosphorylation polypeptides in the mammalian mitochondrial membrane. Cell Metab 2012; 16:274-83. [PMID: 22819524 DOI: 10.1016/j.cmet.2012.06.012] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Revised: 02/10/2012] [Accepted: 06/22/2012] [Indexed: 11/27/2022]
Abstract
Although substantial progress has been made in understanding the mechanisms underlying the expression of mtDNA-encoded polypeptides, the regulatory factors involved in mitoribosome-mediated synthesis and simultaneous insertion of mitochondrial oxidative phosphorylation (OXPHOS) polypeptides into the inner membrane of mitochondria are still unclear. In the present study, disruption of the mouse Crif1 gene, which encodes a mitochondrial protein, resulted in a profound deficiency in OXPHOS caused by the disappearance of OXPHOS subunits and complexes in vivo. CRIF1 was associated with large mitoribosomal subunits that were located close to the polypeptide exit tunnel, and the elimination of CRIF1 led to both aberrant synthesis and defective insertion of mtDNA-encoded nascent OXPHOS polypeptides into the inner membrane. CRIF1 interacted with nascent OXPHOS polypeptides and molecular chaperones, e.g., Tid1. Taken together, these results suggest that CRIF1 plays a critical role in the integration of OXPHOS polypeptides into the mitochondrial membrane in mammals.
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Affiliation(s)
- Soung Jung Kim
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University School of Medicine, Daejeon 301-721, Korea
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Lee JU, Huang S, Lee MH, Lee SE, Ryu MJ, Kim SJ, Kim YK, Kim SY, Joung KH, Kim JM, Shong M, Jo YS. Dual specificity phosphatase 6 as a predictor of invasiveness in papillary thyroid cancer. Eur J Endocrinol 2012; 167:93-101. [PMID: 22535643 DOI: 10.1530/eje-12-0010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE The genetic mutations causing the constitutive activation of MEK/ERK have been regarded as an initiating factor in papillary thyroid carcinoma (PTC). The ERK-specific dual specificity phosphatase 6 (DUSP6) is part of the ERK-dependent transcriptional output. Therefore, the coordinated regulation of the activities of ERK kinases and DUSP6 may need to be reestablished to make new balances in PTC. METHODS To investigate the role of DUSP6 in the regulation of ERK1/2 (MAPK3/1)-dependent transcription, 42 benign neoplasms and 167 PTCs were retrospectively analyzed by immunohistochemistry with dideoxy sequencing to detect BRAF(V600E) mutation. RESULTS The expressions of total ERK1/2, DUSP6, c-Fos (FOS), c-Myc (MYC), cyclin D1, and PCNA were markedly increased in PTC compared with those in benign neoplasms. However, phospho-ERK1/2 was detected in only eight (4.8%) cases out of 167 PTC samples. Unexpectedly, the staining intensity and nuclear localization of ERK1/2 were not affected by the presence or absence of the BRAF(V600E) mutation. However, the expressions of c-Fos and PCNA were elevated in BRAF(V600E)-positive PTC compared with those in BRAF(V600E)-negative PTC. Interestingly, the higher staining intensities of DUSP6 were associated with the level of total ERK1/2 expression (P=0.04) and with high-risk biological features such as age (P=0.05), tumor size (P=0.01), and extrathyroidal extension (linear by linear association, P=0.02). In addition, DUSP6 silencing significantly decreased the cell viability and migration rate of FRO cells. CONCLUSIONS The coordinated upregulation of total ERK1/2 and its phosphatase, DUSP6, is related to bare detection of phospho-ERK1/2 in PTC regardless of BRAF(V)(600E) mutation status. A link between DUSP6 expression and high-risk features of PTC suggested that DUSP6 is an important independent factor affecting the signaling pathways in established PTC.
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Affiliation(s)
- Jung Uee Lee
- Department of Pathology, St Mary's Hospital, Catholic University of Korea, 64 Daeheung-ro, Chungku Daejeon 301-723, Korea
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Kim KS, Min JK, Liang ZL, Lee K, Lee JU, Bae KH, Lee MH, Lee SE, Ryu MJ, Kim SJ, Kim YK, Choi MJ, Jo YS, Kim JM, Shong M. Aberrant l1 cell adhesion molecule affects tumor behavior and chemosensitivity in anaplastic thyroid carcinoma. Clin Cancer Res 2012; 18:3071-8. [PMID: 22472175 DOI: 10.1158/1078-0432.ccr-11-2757] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
PURPOSE Anaplastic thyroid carcinoma (ATC) is one of the most invasive human cancers and has a poor prognosis. Molecular targets of ATC that determine its highly aggressive nature remain unidentified. This study investigated L1 cell adhesion molecule (L1CAM) expression and its role in tumorigenesis of ATCs. EXPERIMENTAL DESIGN Expression of L1CAM in thyroid cancer was evaluated by immunohistochemical analyses of tumor samples from patients with thyroid cancer. We investigated the role of L1CAM in proliferation, migration, invasion, and chemoresistance using short hairpin RNA (shRNA) knockdown experiments in human ATC cell lines. Finally, we evaluated the role of L1CAM on tumorigenesis with ATC xenograft assay in a nude mouse model. RESULTS L1CAM expression was not detectable in normal follicular epithelial cells of the thyroid or in differentiated thyroid carcinoma. In contrast, analysis of ATC samples showed specifically higher expression of L1CAM in the invasive area of the tumor. Specific knockdown of L1CAM in the ATC cell lines, FRO and 8505C, caused a significant decrease in the proliferative, migratory, and invasive capabilities of the cells. Suppression of L1CAM expression in ATC cell lines increased chemosensitivity to gemcitabine or paclitaxel. Finally, in an ATC xenograft model, depletion of L1CAM markedly reduced tumor growth and increased the survival of tumor-bearing mice. CONCLUSIONS We report that L1CAM is highly expressed in the samples taken from patients with ATCs. L1CAM plays an important role in determining tumor behavior and chemosensitivity in cell lines derived from ATCs. Therefore, we suggest that L1CAM may be an important therapeutic target in patients with ATCs.
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Affiliation(s)
- Koon Soon Kim
- Research Center for Endocrinology and Metabolic Diseases, Division of Endocrinology, Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, South Korea
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Lee SE, Lee JU, Lee MH, Ryu MJ, Kim SJ, Kim YK, Kim KS, Choi MJ, Jo YS, Shong M. Abstract B149: Yes-associated protein (YAP) is associated with aggressive characteristics of BRAFV600E thyroid cancer. Mol Cancer Ther 2011. [DOI: 10.1158/1535-7163.targ-11-b149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Up regulation of Yes-associated protein (YAP), a transcriptional co-activator regulated by Hippo (MST-LAST-YAP) pathway, has been reported to mediate oncogenic transformation in animal models of hepatocellular carcinomas. However, the expression status and molecular biological role of YAP in thyroid cancer remained to be investigated. We evaluated YAP expression and identified increased nuclear YAP expression in PTC and ATC. Interestingly, we could observe nuclear YAP staining more frequently in BRAFV600E(+) PTC. We also performed immunofluorescence staining to verify intracellular localization of YAP in TPC1 (harboring RET/PTC1), 8505C (harboring BRAFV600E) and BRAFV600E stably transfected HEK293T cells. Consistently, we could detect nuclear YAP in 8505C and BRAFV600E expressed cells, but not in TPC1. Although cell viability assays did not show any difference between YAP knockout cells and control cells generated by using shYAP in 8505C and shCTL (control) 8505C, YAP knockout cells showed remarkably decreased migration ability in the scratch assays. Using orthotopic mice models, shYAP 8505C injected mice showed decreased local invasion ability and less frequent lung metastasis. In conclusions, Nuclear YAP could be more frequently detected in BRAFV600E(+) thyroid cancer compared to BRAFV600E(−) thyroid cancer. Furthermore, nuclear YAP in BRAFV600E(+) thyroid cancer was associated with local invasiveness and distant metastasis, presenting that YAP could affect the aggressive phenotype of BRAFV600E(+) thyroid cancer.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the AACR-NCI-EORTC International Conference: Molecular Targets and Cancer Therapeutics; 2011 Nov 12-16; San Francisco, CA. Philadelphia (PA): AACR; Mol Cancer Ther 2011;10(11 Suppl):Abstract nr B149.
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Affiliation(s)
- Seong Eun Lee
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Jung Uee Lee
- 2Daejeon St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea
| | - Min Hee Lee
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Ryu
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Soung Joong Kim
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Yong Kyung Kim
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Koon Soon Kim
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Min Jeong Choi
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Young Suk Jo
- 1Chungnam National University School of Medicine, Daejeon, Korea
| | - Minho Shong
- 1Chungnam National University School of Medicine, Daejeon, Korea
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Lee SJ, Lee MH, Kim DW, Lee S, Huang S, Ryu MJ, Kim YK, Kim SJ, Kim SJ, Hwang JH, Oh S, Cho H, Kim JM, Lim DS, Jo YS, Shong M. Cross-regulation between oncogenic BRAF(V600E) kinase and the MST1 pathway in papillary thyroid carcinoma. PLoS One 2011; 6:e16180. [PMID: 21249150 PMCID: PMC3020965 DOI: 10.1371/journal.pone.0016180] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Accepted: 12/07/2010] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND The BRAF(V600E) mutation leading to constitutive signaling of MEK-ERK pathways causes papillary thyroid cancer (PTC). Ras association domain family 1A (RASSF1A), which is an important regulator of MST1 tumor suppressor pathways, is inactivated by hypermethylation of its promoter region in 20 to 32% of PTC. However, in PTC without RASSF1A methylation, the regulatory mechanisms of RASSF1A-MST1 pathways remain to be elucidated, and the functional cooperation or cross regulation between BRAF(V600E) and MST1,which activates Foxo3,has not been investigated. METHODOLOGY/PRINCIPAL FINDINGS The negative regulators of the cell cycle, p21 and p27, are strongly induced by transcriptional activation of FoxO3 in BRAF(V600E) positive thyroid cancer cells. The FoxO3 transactivation is augmented by RASSF1A and the MST1 signaling pathway. Interestingly, introduction of BRAF(V600E)markedly abolished FoxO3 transactivation and resulted in the suppression of p21 and p27 expression. The suppression of FoxO3 transactivation by BRAF(V600E)is strongly increased by coexpression of MST1 but it is not observed in the cells in which MST1, but not MST2,is silenced. Mechanistically, BRAF(V600E)was able to bind to the C-terminal region of MST1 and resulted in the suppression of MST1 kinase activities. The induction of the G1-checkpoint CDK inhibitors, p21 and p27,by the RASSF1A-MST1-FoxO3 pathway facilitates cellular apoptosis, whereas addition of BRAF(V600E) inhibits the apoptotic processes through the inactivation of MST1. Transgenic induction of BRAF(V600E)in the thyroid gland results in cancers resembling human papillary thyroid cancers. The development of BRAF(V600E)transgenic mice with the MST1 knockout background showed that these mice had abundant foci of poorly differentiated carcinomas and large areas without follicular architecture or colloid formation. CONCLUSIONS/SIGNIFICANCE The results of this study revealed that the oncogenic effect of BRAF(V600E) is associated with the inhibition of MST1 tumor suppressor pathways, and that the activity of RASSF1A-MST1-FoxO3 pathways determines the phenotypes of BRAF(V600E) tumors.
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Affiliation(s)
- Seong Jin Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
- Pharmacology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Min Hee Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Dong Wook Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - SeongEun Lee
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Songmei Huang
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Min Jeong Ryu
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Yong Kyung Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Sung Jin Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Soung Jung Kim
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Jung Hwan Hwang
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
- Animal Model Center, Korea Research Institute of Bioscience and Biotechnology, Daejeon, Republic of Korea
| | - Sangphil Oh
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Heeyeong Cho
- Pharmacology Research Center, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Jin Man Kim
- Department of Pathology, Chungnam National University School of Medicine, Daejeon, Republic of Korea
| | - Dae-Sik Lim
- Department of Biological Sciences, Korea Advanced Institute of Science and Technology, Daejeon, Republic of Korea
| | - Young Suk Jo
- Research Center for Endocrine and Metabolic Diseases, Chungnam National University Hospital, Daejeon, Republic of Korea
- * E-mail: (MS); (YSJ)
| | - Minho Shong
- Department of Internal Medicine, Chungnam National University School of Medicine, Daejeon, Republic of Korea
- * E-mail: (MS); (YSJ)
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Lee MH, Lee SE, Kim DW, Ryu MJ, Kim SJ, Kim SJ, Kim YK, Park JH, Kweon GR, Kim JM, Lee JU, De Falco V, Jo YS, Shong M. Mitochondrial localization and regulation of BRAFV600E in thyroid cancer: a clinically used RAF inhibitor is unable to block the mitochondrial activities of BRAFV600E. J Clin Endocrinol Metab 2011; 96:E19-30. [PMID: 20926530 DOI: 10.1210/jc.2010-1071] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
CONTEXT The oncogenic BRAF(V600E) mutation results in an active structural conformation characterized by greatly elevated ERK activity. However, additional cellular effects caused by subcellular action of BRAF(V600E) remain to be identified. OBJECTIVE To explore these effects, differences in the subcellular localization of wild-type and mutant BRAF in thyroid cancer were investigated. RESULTS A significant proportion of endogenous and exogenous BRAF(V600E), but not wild-type BRAF, was detected in the mitochondrial fraction, similar to other BRAF mutants including BRAF(V600D), BRAF(V600K), BRAF(V600R), and BRAF(G469A), which showed elevated kinase activity and mitochondrial localization. Induced expression of BRAF(V600E) suppressed the apoptotic responses against staurosporine and TNFα/cycloheximide. Interestingly, the mitochondrial localization and antiapoptotic activities of BRAF(V600E) were unaffected by sorafenib and U0126 suppression of MAPK kinase (MEK) and ERK activities. Similarly, although the RAF inhibitor sorafenib effectively inhibited MEK/ERK activation, it did not block the mitochondrial localization of BRAF(V600E). In addition, inducible expression of BRAF(V600E) increased the glucose uptake rate and decreased O(2) consumption, suggesting that BRAF(V600E) reduces mitochondrial oxidative phosphorylation, a signature feature of cancer cells. Again, these metabolic alterations resulted by BRAF(V600E) expression were not affected by the treatment of thyroid cells by sorafenib. Therefore, RAF and MEK inhibitors are unable to block the antiapoptotic activity of BRAF(V600E) or correct the high glucose uptake rate and glycolytic activity and suppressed mitochondrial oxidative phosphorylation induced by BRAF(V600E). CONCLUSIONS The mitochondrial localization observed in oncogenic BRAF mutants might be related to their altered responses to apoptotic stimuli and characteristic metabolic phenotypes found in thyroid cancer. The inability of MEK and RAF inhibitors, U0126 and sorafenib, respectively, to block the mitochondrial localization of BRAF(V600E) has additional therapeutic implications for BRAF(V600E)-positive thyroid cancers.
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Affiliation(s)
- Min Hee Lee
- Department of Internal Medicine, Division of Endocrinology, Chungnam National University School of Medicine, Jung-gu, Daejeon, Korea
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Lee MH, Lee SE, Kim DW, Ryu MJ, Kim SJ, Kim SJ, Kim YK, Park JH, Kweon GR, Kim JM, Lee JU, De Falco V, Jo YS, Shong M. Mitochondrial Localization and Regulation of BRAFV600E in Thyroid Cancer: A Clinically Used RAF Inhibitor Is Unable to Block the Mitochondrial Activities of BRAFV600E. Mol Endocrinol 2010. [DOI: 10.1210/mend.24.11.9999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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Oh S, Kim SJ, Hwang JH, Lee HY, Ryu MJ, Park J, Kim SJ, Jo YS, Kim YK, Lee CH, Kweon KR, Shong M, Park SB. Antidiabetic and Antiobesity Effects of Ampkinone (6f), a Novel Small Molecule Activator of AMP-Activated Protein Kinase. J Med Chem 2010; 53:7405-13. [DOI: 10.1021/jm100565d] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Sung Jin Kim
- Department of Internal Medicine
- Department of Biochemistry
| | - Jung Hwan Hwang
- Laboratory of Experimental Animals, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 305-806, Korea
| | | | - Min Jeong Ryu
- Department of Internal Medicine
- Department of Biochemistry
| | | | - Soung Jung Kim
- Department of Internal Medicine
- Department of Biochemistry
| | - Young Suk Jo
- Department of Internal Medicine
- Department of Biochemistry
| | - Yong Kyung Kim
- Department of Internal Medicine
- Department of Biochemistry
| | - Chul-Ho Lee
- Laboratory of Experimental Animals, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 305-806, Korea
| | | | - Minho Shong
- Department of Internal Medicine
- Department of Biochemistry
| | - Seung Bum Park
- Department of Chemistry
- Department of Biophysics and Chemical Biology
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Lee MH, Kim KS, Lee SE, Ryu MJ, Kim SJ, Kim YK, Kweon GR, Jo YS, Shong M. Abstract 5094: Mutant specific mitochondrial localization of BRAFV600E: Clinically used BRAF kinase inhibitors are not able to block mitochondrial actions of BRAFV600E. Cancer Res 2010. [DOI: 10.1158/1538-7445.am10-5094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Oncogenic mutation in BRAF kinase (BRAFV600E) results active structural conformation characterized with greatly elevated ERK activities. However, other cellular effects which are specifically influenced by mutation in BRAF kinase remains to be identified. We investigated differences in subcellular localizations of wild type and mutant BRAFV600E and observed the effects of the BRAF inhibitors on subcellular compartment-specific effects of BRAFV600E. We found that significant portion of endogenous and exogenous BRAFV600E, but not wild type BRAF, was detected in mitochondrial fraction. The other BRAF mutants, BRAFV600D, BRAFV600K and BRAFV600R which shows higher kinase activities were able to localize in mitochondria. The localization of BRAFV600E onto mitochondria provides anti-apoptotic activities against staurosporine and TNFα/cycloheximide. In addition, inducible expression of BRAFV600E increases glucose uptake rate, decreased O2 consumption, suggesting reduced mitochondrial oxidative phosphorylation which are signature features found in cancer cells. Interestingly, suppression of MEK activities using U0126 did not affect both mitochondrial localization and anti-apoptotic activities of BRAFV600E. The BRAF inhibitor such as Sorafenib was effective to inhibit MEK/ERK activation, however, they did not block the mitochondrial localization of BRAFV600E. Therefore, these inhibitors did not block the antiapoptotic activities and not reduce high glucose uptake rate and glycolytic activities induced by BRAFV600E. We found oncogenic BRAF mutants are able to localize in mitochondria and these actions might be related to altered responses to apoptotic stimuli and to characteristic metabolic phenotypes. In addition, currently BRAFV600E inhibitors were not sufficient to block mitochondrial localization of BRAFV600E and it may explain the limited efficacy of these drugs in clinically advanced BRAFV600E-positive tumors. These observations provide new mutation- specific roles of BRAFV600E which is potentially important for the development of therapeutics.
Note: This abstract was not presented at the AACR 101st Annual Meeting 2010 because the presenter was unable to attend.
Citation Format: {Authors}. {Abstract title} [abstract]. In: Proceedings of the 101st Annual Meeting of the American Association for Cancer Research; 2010 Apr 17-21; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2010;70(8 Suppl):Abstract nr 5094.
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Affiliation(s)
- Min Hee Lee
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Koon Soon Kim
- 2St. Mary's Hospital, The Catholic University of Korea, Daejeon, Korea, Republic of
| | - Seong Eun Lee
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Min Jeong Ryu
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Soung Joong Kim
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Yong Kyoung Kim
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Gi Ryang Kweon
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Young Suk Jo
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
| | - Minho Shong
- 1Chungnam National University School of Medicine, Daejeon, Korea, Republic of
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