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Pydyn N, Ferenc A, Trzos K, Pospiech E, Wilamowski M, Mucha O, Major P, Kadluczka J, Rodrigues PM, Banales JM, Herranz JM, Avila MA, Hutsch T, Malczak P, Radkowiak D, Budzynski A, Jura J, Kotlinowski J. MCPIP1 Inhibits Hepatic Stellate Cell Activation in Autocrine and Paracrine Manners, Preventing Liver Fibrosis. Cell Mol Gastroenterol Hepatol 2024; 17:887-906. [PMID: 38311169 PMCID: PMC11026697 DOI: 10.1016/j.jcmgh.2024.01.021] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND & AIMS Hepatic fibrosis is characterized by enhanced deposition of extracellular matrix (ECM), which results from the wound healing response to chronic, repeated injury of any etiology. Upon injury, hepatic stellate cells (HSCs) activate and secrete ECM proteins, forming scar tissue, which leads to liver dysfunction. Monocyte-chemoattractant protein-induced protein 1 (MCPIP1) possesses anti-inflammatory activity, and its overexpression reduces liver injury in septic mice. In addition, mice with liver-specific deletion of Zc3h12a develop features of primary biliary cholangitis. In this study, we investigated the role of MCPIP1 in liver fibrosis and HSC activation. METHODS We analyzed MCPIP1 levels in patients' fibrotic livers and hepatic cells isolated from fibrotic murine livers. In vitro experiments were conducted on primary HSCs, cholangiocytes, hepatocytes, and LX-2 cells with MCPIP1 overexpression or silencing. RESULTS MCPIP1 levels are induced in patients' fibrotic livers compared with their nonfibrotic counterparts. Murine models of fibrosis revealed that its level is increased in HSCs and hepatocytes. Moreover, hepatocytes with Mcpip1 deletion trigger HSC activation via the release of connective tissue growth factor. Overexpression of MCPIP1 in LX-2 cells inhibits their activation through the regulation of TGFB1 expression, and this phenotype is reversed upon MCPIP1 silencing. CONCLUSIONS We demonstrated that MCPIP1 is induced in human fibrotic livers and regulates the activation of HSCs in both autocrine and paracrine manners. Our results indicate that MCPIP1 could have a potential role in the development of liver fibrosis.
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Affiliation(s)
- Natalia Pydyn
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland.
| | - Anna Ferenc
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland
| | - Katarzyna Trzos
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Krakow, Poland
| | - Ewelina Pospiech
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Mateusz Wilamowski
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland
| | - Olga Mucha
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland
| | - Piotr Major
- Jagiellonian University Medical College, 2nd Department of General Surgery, Krakow, Poland
| | - Justyna Kadluczka
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland; Jagiellonian University, Doctoral School of Exact and Natural Sciences, Krakow, Poland
| | - Pedro M Rodrigues
- Department of Liver and Gastrointestinal Diseases, Biodonostia Health Research Institute-Donostia University Hospital, University of the Basque Country (UPV/EHU), San Sebastian, Spain; National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, "Instituto de Salud Carlos III"), San Sebastian-Donostia, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Jesus M Banales
- Department of Liver and Gastrointestinal Diseases, Biodonostia Health Research Institute-Donostia University Hospital, University of the Basque Country (UPV/EHU), San Sebastian, Spain; National Institute for the Study of Liver and Gastrointestinal Diseases (CIBERehd, "Instituto de Salud Carlos III"), San Sebastian-Donostia, Spain; IKERBASQUE, Basque Foundation for Science, Bilbao, Spain; Department of Biochemistry and Genetics, School of Sciences, University of Navarra, Pamplona, Spain
| | - Jose M Herranz
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, Madrid, Spain; Hepatology Program, Liver Unit, Instituto de Investigación de Navarra (IdisNA), Clínica Universidad de Navarra and Centro de Investigación Médica Aplicada (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Matias A Avila
- Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Carlos III National Institute of Health, Madrid, Spain; Hepatology Program, Liver Unit, Instituto de Investigación de Navarra (IdisNA), Clínica Universidad de Navarra and Centro de Investigación Médica Aplicada (CIMA), Universidad de Navarra, Pamplona, Spain
| | - Tomasz Hutsch
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland; Veterinary Diagnostic Laboratory ALAB Bioscience, Warsaw, Poland
| | - Piotr Malczak
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Dorota Radkowiak
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Andrzej Budzynski
- Malopolska Centre of Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jolanta Jura
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland
| | - Jerzy Kotlinowski
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Krakow, Poland.
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Mucha O, Skupien-Rabian B, Slota A, Trzos K, Pydyn N, Podlewski B, Jura J, Kotlinowski J. Hepatic Mcpip1 regulates adaptation to food restriction in mice. Acta Biochim Pol 2023; 70:919-925. [PMID: 37929720 DOI: 10.18388/abp.2020_6819] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Accepted: 09/19/2023] [Indexed: 11/07/2023]
Abstract
Monocyte-chemoattractant protein-induced protein 1 (MCPIP1, or Regnase-1) is an endoribonuclease that degrades translationally active mRNA molecules. MCPIP1 is mostly known for its anti-inflammatory actions, but it is also an important regulator of adipogenesis and lipid metabolism. Its overexpression impairs adipogenesis by reducing mRNA levels of C/EBPβ and PPARγ, key transcription factors regulating this process. Although adipocytes overexpressing MCPIP1 are characterised by impaired glucose uptake, the function of MCPIP1 in hepatocyte metabolism remains unknown. In this study, conditional deletion of Zc3h12a in murine liver epithelial cells was used to characterise the role of Mcpip1 in adaptation to 24-hour food restriction. We found that Mcpip1 deficiency in liver epithelial cells (Mcpip1fl/flAlbCre mice) resulted in higher blood glucose levels in response to fasting in comparison to Mcpip1fl/fl counterparts. Hepatic proteome analysis showed 26 down-regulated and 117 up-regulated proteins in Mcpip1fl/flAlbCre animals that were involved in cellular adhesion, extracellular matrix and metabolic processes. In conclusion, our studies provide new insight into the hepatic function of Mcpip1 and its involvement in metabolic control.
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Affiliation(s)
- Olga Mucha
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
| | - Bozena Skupien-Rabian
- Jagiellonian University, Malopolska Centre of Biotechnology, Proteomics and Mass Spectrometry Core Facility, Kraków, Poland
| | - Alicja Slota
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
| | - Katarzyna Trzos
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
| | - Natalia Pydyn
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
| | - Bartosz Podlewski
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
| | - Jolanta Jura
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
| | - Jerzy Kotlinowski
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Kraków, Poland
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Pydyn N, Kadluczka J, Major P, Hutsch T, Belamri K, Malczak P, Radkowiak D, Budzynski A, Miekus K, Jura J, Kotlinowski J. Hepatic MCPIP1 protein levels are reduced in NAFLD patients and are predominantly expressed in cholangiocytes and liver endothelium. Hepatol Commun 2023; 7:e0008. [PMID: 36809310 PMCID: PMC9949814 DOI: 10.1097/hc9.0000000000000008] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/20/2022] [Indexed: 02/23/2023] Open
Abstract
BACKGROUND AND AIMS NAFLD is characterized by the excessive accumulation of fat in hepatocytes. NAFLD can range from simple steatosis to the aggressive form called NASH, which is characterized by both fatty liver and liver inflammation. Without proper treatment, NAFLD may further progress to life-threatening complications, such as fibrosis, cirrhosis, or liver failure. Monocyte chemoattractant protein-induced protein 1 (MCPIP1, alias Regnase 1) is a negative regulator of inflammation, acting through the cleavage of transcripts coding for proinflammatory cytokines and the inhibition of NF-κB activity. METHODS In this study, we investigated MCPIP1 expression in the liver and peripheral blood mononuclear cells (PBMCs) collected from a cohort of 36 control and NAFLD patients hospitalized due to bariatric surgery or primary inguinal hernia laparoscopic repair. Based on liver histology data (hematoxylin and eosin and Oil Red-O staining), 12 patients were classified into the NAFL group, 19 into the NASH group, and 5 into the control (non-NAFLD) group. Biochemical characterization of patient plasma was followed by expression analysis of genes regulating inflammation and lipid metabolism. The MCPIP1 protein level was reduced in the livers of NAFL and NASH patients in comparison to non-NAFLD control individuals. In addition, in all groups of patients, immunohistochemical staining showed that the expression of MCPIP1 was higher in the portal fields and bile ducts in comparison to the liver parenchyma and central vein. The liver MCPIP1 protein level negatively correlated with hepatic steatosis but not with patient body mass index or any other analyte. The MCPIP1 level in PBMCs did not differ between NAFLD patients and control patients. Similarly, in patients' PBMCs there were no differences in the expression of genes regulating β-oxidation (ACOX1, CPT1A, and ACC1) and inflammation (TNF, IL1B, IL6, IL8, IL10, and CCL2), or transcription factors controlling metabolism (FAS, LCN2, CEBPB, SREBP1, PPARA, and PPARG). CONCLUSION We have demonstrated that MCPIP1 protein levels are reduced in NAFLD patients, but further research is needed to investigate the specific role of MCPIP1 in NAFL initiation and the transition to NASH.
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Affiliation(s)
- Natalia Pydyn
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Justyna Kadluczka
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- Department of Neuropsychopharmacology, Maj Institute of Pharmacology Polish Academy of Sciences, Krakow, Poland
| | - Piotr Major
- 2nd Department of General Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Tomasz Hutsch
- Department of Pathology and Veterinary Diagnostics, Institute of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Poland
- Veterinary Diagnostic Laboratory ALAB Bioscience, Warsaw, Poland
| | - Kinga Belamri
- Veterinary Diagnostic Laboratory ALAB Bioscience, Warsaw, Poland
| | - Piotr Malczak
- 2nd Department of General Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Dorota Radkowiak
- 2nd Department of General Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Andrzej Budzynski
- 2nd Department of General Surgery, Jagiellonian University Medical College, Krakow, Poland
| | - Katarzyna Miekus
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jerzy Kotlinowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Pydyn N, Kotlinowski J. [Role of MCPIP1 protein in lipid metabolism, liver homeostasis and non-alcoholic fatty liver disease]. Postepy Biochem 2022; 68:246-254. [PMID: 36317994 DOI: 10.18388/pb.2021_446] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 04/27/2022] [Indexed: 06/16/2023]
Abstract
Non-alcoholic fatty liver disease (NAFLD) is characterized by excessive accumulation of lipids in hepatocytes. Among NAFLD patients, in 25% of them this disease progress to nonalcoholic steatohepatitis, which is characterized additionally by the development of inflammation and fibrosis of liver. Currently, it is estimated that 24% of the world’s population suffers from NAFLD. MCPIP1 protein is an RNase described as a negative regulator of inflammation. Also, MCPIP1 plays a role in lipid metabolism because it inhibits the process of adipogenesis and mice with a deletion of Zc3h12a gene are characterized by dyslipidemia and reduced body fat content. In the case of ischemia-reperfusion injury in liver, MCPIP1 is protective against the inflammation and damage of this organ. Lipid accumulation by hepatocytes is associated with a decrease of Mcpip1 level. In addition, MCPIP1 may influence the PPARγ-mediated lipogenesis process. Presence of Mcpip1 in both myeloid leukocytes and liver epithelial cells is crucial for the maintenance of liver homeostasis.
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Affiliation(s)
- Natalia Pydyn
- Zakład Biochemii Ogólnej, Wydział Biochemii, Biofizyki i Biotechnologii, Uniwersytet Jagielloński, Kraków.
| | - Jerzy Kotlinowski
- Zakład Biochemii Ogólnej, Wydział Biochemii, Biofizyki i Biotechnologii, Uniwersytet Jagielloński, Kraków.
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Pydyn N, Żurawek D, Kozieł J, Kus E, Wojnar-Lason K, Jasztal A, Fu M, Jura J, Kotlinowski J. Role of Mcpip1 in obesity-induced hepatic steatosis as determined by myeloid and liver-specific conditional knockouts. FEBS J 2021; 288:6563-6580. [PMID: 34058074 PMCID: PMC8988450 DOI: 10.1111/febs.16040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 03/25/2021] [Accepted: 05/28/2021] [Indexed: 02/06/2023]
Abstract
Monocyte chemoattractant protein-induced protein 1 (MCPIP1, alias Regnase 1) is a negative regulator of inflammation, acting through cleavage of transcripts coding for proinflammatory cytokines and by inhibition of NFκB activity. Moreover, it was demonstrated that MCPIP1 regulates lipid metabolism both in adipose tissue and in hepatocytes. In this study, we investigated the effects of tissue-specific Mcpip1 deletion on the regulation of hepatic metabolism and development of nonalcoholic fatty liver disease (NAFLD). We used control Mcpip1fl/fl mice and animals with deletion of Mcpip1 in myeloid leukocytes (Mcpip1fl/fl LysMCre ) and in hepatocytes (Mcpip1fl/fl AlbCre ), which were fed chow or a high-fat diet (HFD) for 12 weeks. Mcpip1fl/fl LysMCre mice fed a chow diet were characterized by a significantly reduced hepatic expression of genes regulating lipid and glucose metabolism, which subsequently resulted in low plasma glucose level and dyslipidemia. These animals also displayed systemic inflammation, demonstrated by increased concentrations of cytokines in the plasma and high Tnfa, Il6, IL1b mRNA levels in the liver and brown adipose tissue (BAT). Proinflammatory leukocyte infiltration into BAT, together with low expression of Ucp1 and Ppargc1a, resulted in hypothermia of 22-week-old Mcpip1fl/fl LysMCre mice. On the other hand, there were no significant changes in phenotype in Mcpip1fl/fl AlbCre mice. Although we detected a reduced hepatic expression of genes regulating glucose metabolism and β-oxidation in these mice, they remained asymptomatic. Upon feeding with a HFD, Mcpip1fl/fl LysMCre mice did not develop obesity, glucose intolerance, nor hepatic steatosis, but were characterized by low plasma glucose level and dyslipidemia, along with proinflammatory phenotype. Mcpip1fl/fl AlbCre animals, following a HFD, became hypercholesterolemic, but accumulated lipids in the liver at the same level as Mcpip1fl/fl mice, and no changes in the level of soluble factors tested in the plasma were detected. We have demonstrated that Mcpip1 protein plays an important role in the liver homeostasis. Depletion of Mcpip1 in myeloid leukocytes, followed by systemic inflammation, has a more pronounced effect on controlling liver metabolism and homeostasis than the depletion of Mcpip1 in hepatocytes.
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Affiliation(s)
- Natalia Pydyn
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Dariusz Żurawek
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Joanna Kozieł
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Edyta Kus
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, Krakow, Poland
| | - Kamila Wojnar-Lason
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, Krakow, Poland.,Department of Pharmacology, Jagiellonian University Medical College, Krakow, Poland
| | - Agnieszka Jasztal
- Jagiellonian Center for Experimental Therapeutics, Jagiellonian University, Krakow, Poland
| | - Mingui Fu
- Department of Biomedical Science and Shock/Trauma Research Center, School of Medicine, University of Missouri, Kansas City, MO, USA
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jerzy Kotlinowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Kotlinowski J, Hutsch T, Czyzynska-Cichon I, Wadowska M, Pydyn N, Jasztal A, Kij A, Dobosz E, Lech M, Miekus K, Pośpiech E, Fu M, Jura J, Koziel J, Chlopicki S. Deletion of Mcpip1 in Mcpip1 fl/flAlb Cre mice recapitulates the phenotype of human primary biliary cholangitis. Biochim Biophys Acta Mol Basis Dis 2021; 1867:166086. [PMID: 33513427 PMCID: PMC8938941 DOI: 10.1016/j.bbadis.2021.166086] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 01/19/2021] [Accepted: 01/21/2021] [Indexed: 12/12/2022]
Abstract
Primary biliary cholangitis (PBC) is an autoimmune disease characterized by progressive destruction of the intrahepatic bile ducts. The immunopathology of PBC involves excessive inflammation; therefore, negative regulators of inflammatory response, such as Monocyte Chemoattractant Protein-1-Induced Protein-1 (MCPIP1) may play important roles in the development of PBC. The aim of this work was to verify whether Mcpip1 expression protects against development of PBC. Genetic deletion of Zc3h12a was used to characterize the role of Mcpip1 in the pathogenesis of PBC in 6–52-week-old mice. We found that Mcpip1 deficiency in the liver (Mcpip1fl/flAlbCre) recapitulates most of the features of human PBC, in contrast to mice with Mcpip1 deficiency in myeloid cells (Mcpip1fl/flLysMCre mice), which present with robust myeloid cell-driven systemic inflammation. In Mcpip1fl/flAlbCre livers, intrahepatic bile ducts displayed proliferative changes with inflammatory infiltration, bile duct destruction, and fibrosis leading to cholestasis. In plasma, increased concentrations of IgG, IgM, and AMA autoantibodies (anti-PDC-E2) were detected. Interestingly, the phenotype of Mcpip1fl/flAlbCre mice was robust in 6-week-old, but milder in 12–24-week-old mice. Hepatic transcriptome analysis of 6-week-old and 24-week-old Mcpip1fl/flAlbCre mice showed 812 and 8 differentially expressed genes, respectively, compared with age-matched control mice, and revealed a distinct set of genes compared to those previously associated with development of PBC. In conclusion, Mcpip1fl/flAlbCre mice display early postnatal phenotype that recapitulates most of the features of human PBC.
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Affiliation(s)
- Jerzy Kotlinowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland.
| | - Tomasz Hutsch
- Department of Experimental Physiology and Pathophysiology, Laboratory of Centre for Preclinical Research, Medical University of Warsaw, Pawińskiego 3c, 02-106 Warsaw, Poland; Veterinary Diagnostic Laboratory ALAB bioscience, Stępińska 22/30, 00-739 Warszawa, Poland
| | - Izabela Czyzynska-Cichon
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Marta Wadowska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Natalia Pydyn
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Agnieszka Jasztal
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Agnieszka Kij
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Ewelina Dobosz
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Maciej Lech
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland; Department of Medicine IV, LMU Hospital, Munich, Germany
| | - Katarzyna Miekus
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Ewelina Pośpiech
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Mingui Fu
- Department of Biomedical Science and Shock/Trauma Research Center, School of Medicine, University of Missouri-Kansas City, Kansas City, USA
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Stefan Chlopicki
- Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland; Chair of Pharmacology, Jagiellonian University Medical College, Grzegorzecka 16, 31-531 Krakow, Poland
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Pydyn N, Kadluczka J, Kus E, Pospiech E, Losko M, Fu M, Jura J, Kotlinowski J. RNase MCPIP1 regulates hepatic peroxisome proliferator-activated receptor gamma via TXNIP/PGC-1alpha pathway. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1458-1471. [PMID: 31185306 DOI: 10.1016/j.bbalip.2019.06.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 11/29/2018] [Revised: 04/23/2019] [Accepted: 06/05/2019] [Indexed: 01/22/2023]
Abstract
Monocyte chemoattractant protein-1-induced protein-1 (MCPIP1) acts as an endonuclease that degrades selected mRNAs, viral RNAs and pre-miRNAs. MCPIP1 inhibits adipogenesis by degradation of C/EBPβ mRNA and adipogenesis-related miRNA, however its role in the regulation of hepatic lipid homeostasis is unknown. In this study, we investigated the role of MCPIP1 in the regulation of lipid metabolism in hepatocytes. C57BL/6 mice were fed a high-fat diet (HFD) for 2-20 weeks and next primary hepatocytes and adipose tissue were isolated. For in vitro experiments we used murine primary hepatocytes, control HepG2 cells and HepG2 with overexpressed or silenced MCPIP1. We found that Mcpip1 levels were lower in primary hepatocytes isolated from HFD-fed mice than in control cells starting at 4 weeks of a HFD. Level of Mcpip1 was also depleted in visceral fat isolated from obese and glucose-intolerant mice characterized by fatty liver disease. We showed that MCPIP1 overexpression in HepG2 cells treated with oleate induces the level and activity of peroxisome proliferator-activated receptor γ (PPARγ). This phenotype was reverted upon silencing of MCPIP1 in HepG2 cells and in primary hepatocytes lacking Mcpip1 protein. MCPIP1 activated the PPARγ transcription factor via the thioredoxin-interacting protein (TXNIP)/peroxisome proliferator-activated receptor γ coactivator 1- α (PGC-1α) pathway. MCPIP1 contributes to lipid metabolism in hepatocytes by regulating the TXNIP/PGC-1α/PPARγ pathway.
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Affiliation(s)
- Natalia Pydyn
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Justyna Kadluczka
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Edyta Kus
- Jagiellonian Centre for Experimental Therapeutics, Jagiellonian University, Bobrzynskiego 14, 30-348 Krakow, Poland
| | - Ewelina Pospiech
- Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland
| | - Magdalena Losko
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Mingui Fu
- Department of Biomedical Science and Shock, Trauma Research Center, School of Medicine, University of Missouri-Kansas City, Kansas City, USA
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Jerzy Kotlinowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland.
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Kotlinowski J, Bukowska-Strakova K, Koppolu A, Kosińska J, Pydyn N, Stawinski P, Wilamowski M, Nowak W, Józkowicz A, Baran J, Płoski R, Jura J. A Novel Monoallelic Nonsense Mutation in the NFKB2 Gene Does Not Cause a Clinical Manifestation. Front Genet 2019; 10:140. [PMID: 30863427 PMCID: PMC6399389 DOI: 10.3389/fgene.2019.00140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 02/11/2019] [Indexed: 01/06/2023] Open
Abstract
NF-κB signaling, acting through NFKB1 dependent canonical and NFKB2 dependent non-canonical pathways plays a critical role in inflammatory and immune responses. Recent studies have associated mutations in these two genes with a common variable immunodeficiency (CVID). While evaluating a female patient seeking a diagnosis explaining her recurrent infections, we found a novel heterozygous c.1831C > T (p.Arg611∗) nonsense mutation in the NFKB2 gene which introduces a Stop codon in the ankyrin repeat domain of p100. Whole exome sequencing (WES) analysis, followed by Sanger sequencing, identified this previously unknown mutation in two other family members. Penetrance of the c.1831C > T variant was assessed by flow-cytometry and protein expression in peripheral blood mononuclear cells (PBMC); whereas, activation of the NF-κB2 signaling pathway was examined through immunoblotting and real-time PCR. Heterozygous c.1831C > T variant led to the expansion of lymphocyte B subpopulations with concomitant reduction of plasmablasts, low IgG levels, and accumulation of p52 in PBMC. On the other hand, tested subjects had normal levels of IgM, IgA, IgE and no impairment in lymphocytes proliferation. Although evaluated patients did not fulfill all clinical features of CVID, their health should be monitored in the future for possible late manifestation of the disease. In conclusion, we showed that NFKB2 haplodeficiency caused by c.1831C > T nonsense mutation is asymptomatic, possibly due to the compensatory mechanisms and allele redundancy.
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Affiliation(s)
- Jerzy Kotlinowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Karolina Bukowska-Strakova
- Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Kraków, Poland
| | - Agnieszka Koppolu
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland.,Postgraduate School of Molecular Medicine, Medical University of Warsaw, Warsaw, Poland
| | - Joanna Kosińska
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Natalia Pydyn
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Piotr Stawinski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Mateusz Wilamowski
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Witold Nowak
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Alicja Józkowicz
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
| | - Jarosław Baran
- Department of Clinical Immunology, Institute of Pediatrics, Jagiellonian University Medical College, Kraków, Poland
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, Warsaw, Poland
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland
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Abstract
Post-transcriptional regulation of mRNA pool is a key process coordinating the proper functioning of cells. This tight control of RNA molecules allows cells to quickly adapt to environmental conditions without the activation of translation. Degradation of RNA is one of the important mechanisms regulating RNA homeostasis.
One of the protein involved in this process is a RNase called MCPIP1, whose function was described in 2009. The enzymatic activity of MCPIP1 is tightly linked to the zinc finger domain responsible for RNA binding and a catalytic domain that participates in endonucleolytic digestion of RNA molecules. MCPIP1 recognizes and cleaves a wide array of substrates, both endogenous mRNA, miRNA, and RNA viruses. Although MCPIP1 structure has not yet been resolved, it is known how an active center is formed and what motives in the RNA sequence are recognized and digested. MCPIP1 recognizes and cleaves RNA within the hairpin structure.
Broad spectrum of MCPIP1 substrates makes this protein an important regulator of many biological
processes such as inflammation, cell differentiation, tumor growth or viral infections. In
this review we describe a structure, properties and biological function of RNase called MCPIP1.
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Affiliation(s)
- Natalia Pydyn
- Zakład Biochemii Ogólnej, Wydział Biochemii, Biofizyki i Biotechnologii, Uniwersytet Jagielloński, Kraków
| | - Katarzyna Miękus
- Zakład Biochemii Ogólnej, Wydział Biochemii, Biofizyki i Biotechnologii, Uniwersytet Jagielloński, Kraków
| | - Jerzy Kotlinowski
- Zakład Biochemii Ogólnej, Wydział Biochemii, Biofizyki i Biotechnologii, Uniwersytet Jagielloński, Kraków
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