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He L, Zhang R, Yang M, Lu M. The role of astrocyte in neuroinflammation in traumatic brain injury. Biochim Biophys Acta Mol Basis Dis 2024; 1870:166992. [PMID: 38128844 DOI: 10.1016/j.bbadis.2023.166992] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 11/30/2023] [Accepted: 12/14/2023] [Indexed: 12/23/2023]
Abstract
Traumatic brain injury (TBI), a significant contributor to mortality and morbidity worldwide, is a devastating condition characterized by initial mechanical damage followed by subsequent biochemical processes, including neuroinflammation. Astrocytes, the predominant glial cells in the central nervous system, play a vital role in maintaining brain homeostasis and supporting neuronal function. Nevertheless, in response to TBI, astrocytes undergo substantial phenotypic alternations and actively contribute to the neuroinflammatory response. This article explores the multifaceted involvement of astrocytes in neuroinflammation subsequent to TBI, with a particular emphasis on their activation, release of inflammatory mediators, modulation of the blood-brain barrier, and interactions with other immune cells. A comprehensive understanding the dynamic interplay between astrocytes and neuroinflammation in the condition of TBI can provide valuable insights into the development of innovative therapeutic approaches aimed at mitigating secondary damage and fostering neuroregeneration.
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Affiliation(s)
- Liang He
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China.
| | - Ruqiang Zhang
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China
| | - Maiqiao Yang
- Department of Anesthesiology, Yan'an Hospital of Kunming City, Kunming 650051, China
| | - Meilin Lu
- Department of Anesthesiology, First Affiliated Hospital of Kunming Medical University, Kunming 650032, China.
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2
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Szukala W, Lichawska-Cieslar A, Pietrzycka R, Kulecka M, Rumienczyk I, Mikula M, Chlebicka I, Konieczny P, Dziedzic K, Szepietowski JC, Fontemaggi G, Rys J, Jura J. Loss of epidermal MCPIP1 is associated with aggressive squamous cell carcinoma. J Exp Clin Cancer Res 2021; 40:391. [PMID: 34903245 PMCID: PMC8667402 DOI: 10.1186/s13046-021-02202-3] [Citation(s) in RCA: 4] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/28/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Squamous cell carcinoma (SCC) of the skin is a common form of nonmelanoma skin cancer. Monocyte chemotactic protein 1-induced protein 1 (MCPIP1), also called Regnase-1, is an RNase with anti-inflammatory properties. In normal human skin, its expression is predominantly restricted to the suprabasal epidermis. The main aim of this study was to investigate whether MCPIP1 is involved in the pathogenesis of SCC. METHODS We analyzed the distribution of MCPIP1 in skin biopsies of patients with actinic keratoses (AKs) and SCCs. To explore the mechanisms by which MCPIP1 may modulate tumorigenesis in vivo, we established a mouse model of chemically induced carcinogenesis. RESULTS Skin expression of MCPIP1 changed during the transformation of precancerous lesions into cutaneous SCC. MCPIP1 immunoreactivity was high in the thickened area of the AK epidermis but was predominantly restricted to keratin pearls in fully developed SCC lesions. Accelerated development of chemically induced skin tumors was observed in mice with loss of epidermal MCPIP1 (Mcpip1eKO). Papillomas that developed in Mcpip1eKO mouse skin were larger and characterized by elevated expression of markers typical of keratinocyte proliferation and tumor angiogenesis. This phenotype was correlated with enhanced expression of IL-6, IL-33 and transforming growth factor-beta (TGF-β). Moreover, our results demonstrated that in keratinocytes, the RNase MCPIP1 is essential for the negative regulation of genes encoding SCC antigens and matrix metallopeptidase 9. CONCLUSIONS Overall, our results provide a mechanistic understanding of how MCPIP1 contributes to the development of epidermoid carcinoma.
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Affiliation(s)
- Weronika Szukala
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Agata Lichawska-Cieslar
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
| | - Roza Pietrzycka
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Maria Kulecka
- Medical Center for Postgraduate Education, Department of Gastroenterology, Hepatology and Clinical Oncology, Marymoncka 99/103, 01-813, Warsaw, Poland.,Maria Skłodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Izabela Rumienczyk
- Maria Skłodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Michal Mikula
- Maria Skłodowska-Curie National Research Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Iwona Chlebicka
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368, Wroclaw, Poland
| | - Piotr Konieczny
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Katarzyna Dziedzic
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Jacek C Szepietowski
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chalubinskiego 1, 50-368, Wroclaw, Poland
| | - Giulia Fontemaggi
- Oncogenomic and Epigenetic Unit, Regina Elena National Cancer Institute, Via Elio Chianesi 53, 00-144, Rome, Italy
| | - Janusz Rys
- Maria Skłodowska-Curie National Research Institute of Oncology, Garncarska 11, 31-115, Krakow, Poland
| | - Jolanta Jura
- Faculty of Biochemistry, Biophysics and Biotechnology, Department of General Biochemistry, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
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Li Y, Haber A, Preuss C, John C, Uyar A, Yang HS, Logsdon BA, Philip V, Karuturi RKM, Carter GW. Transfer learning-trained convolutional neural networks identify novel MRI biomarkers of Alzheimer's disease progression. Alzheimers Dement (Amst) 2021; 13:e12140. [PMID: 34027015 PMCID: PMC8120261 DOI: 10.1002/dad2.12140] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 11/09/2020] [Accepted: 12/02/2020] [Indexed: 12/13/2022]
Abstract
INTRODUCTION Genome-wide association studies (GWAS) for late onset Alzheimer's disease (AD) may miss genetic variants relevant for delineating disease stages when using clinically defined case/control as a phenotype due to its loose definition and heterogeneity. METHODS We use a transfer learning technique to train three-dimensional convolutional neural network (CNN) models based on structural magnetic resonance imaging (MRI) from the screening stage in the Alzheimer's Disease Neuroimaging Initiative consortium to derive image features that reflect AD progression. RESULTS CNN-derived image phenotypes are significantly associated with fasting metabolites related to early lipid metabolic changes as well as insulin resistance and with genetic variants mapped to candidate genes enriched for amyloid beta degradation, tau phosphorylation, calcium ion binding-dependent synaptic loss, APP-regulated inflammation response, and insulin resistance. DISCUSSION This is the first attempt to show that non-invasive MRI biomarkers are linked to AD progression characteristics, reinforcing their use in early AD diagnosis and monitoring.
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Affiliation(s)
- Yi Li
- The Jackson LaboratoryFarmingtonConnecticutUSA
| | - Annat Haber
- The Jackson LaboratoryFarmingtonConnecticutUSA
| | | | - Cai John
- The Jackson LaboratoryFarmingtonConnecticutUSA
| | - Asli Uyar
- The Jackson LaboratoryFarmingtonConnecticutUSA
| | | | | | | | | | - Gregory W. Carter
- The Jackson LaboratoryFarmingtonConnecticutUSA
- The Jackson LaboratoryBar HarborMaineUSA
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Abstract
Inflammation is an organism’s physiological response to harmful septic and aseptic stimuli. This process begins locally through the influx of immune system cells to the damaged tissue and the subsequent activation and secretion of inflammatory mediators to restore homeostasis in the organism. Inflammation is regulated at many levels, and one of these levels is post-transcriptional regulation, which controls the half-life of transcripts that encode inflammatory mediators. One of the proteins responsible for controlling the amount of mRNA in a cell is the RNase monocyte chemoattractant protein-induced protein 1 (MCPIP1). The studies conducted so far have shown that MCPIP1 is involved not only in the regulation of inflammation but also in many other physiological and pathological processes. This paper provides a summary of the information on the role of MCPIP1 in adipogenesis, angiogenesis, cell differentiation, cancer, and skin inflammation obtained to date.
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Xue M, Li G, Li D, Wang Z, Mi L, Da J, Jin X. Up-regulated MCPIP1 in abdominal aortic aneurysm is associated with vascular smooth muscle cell apoptosis and MMPs production. Biosci Rep 2019; 39:BSR20191252. [PMID: 31651935 DOI: 10.1042/BSR20191252] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 09/24/2019] [Accepted: 10/08/2019] [Indexed: 12/27/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is often clinically silent before rupture characterized by extensive vascular inflammation and degenerative elasticity of aortic wall. Monocyte chemotactic protein-induced protein-1 (MCPIP1) exhibits anti-infllammatory and pro-apoptotic effects involved in atherogenesis. However, little is known about the expression and the contribution of MCPIP1 in AAA. In the present study, we collected clinical AAA specimens and constructed AAA mice model through Ang-II infusion, and found apparently increased MCPIP1 expression and severe inflammatory infiltration in AAA aortic membrane as evidenced by elevated levels of monocyte chemotactic protein 1 (MCP-1), interleukin 1 β (IL-1β) and NF-κB, as well as HE staining. The elasticity of aortic tunica media was impaired along with multiple apoptosis of vascular smooth muscle cells (VSMCs) in Ang-II-induced aneurysmal mouse. In vitro Ang-II administration of VSMCs induced MCPIP1 expression, accompanied by up-regulation of matrix metalloproteinase (MMP) 2 (MMP-2) and MMP-9, as well as enhancement of VSMCs proliferation and apoptosis, which may cause damage of intima–media elasticity. Silencing MCPIP1 reversed above effects to further restore the balance of proliferation and apoptosis in VSMCs. Overall, our data indicated that up-regulation of MCPIP1 may become a promising candidate for the diagnosis of AAA, and specific knockdown of MCPIP1 in VSMCs could inhibit VSMCs apoptosis and down-regulate MMPs to maintain vascular wall elasticity. Therefore, knockdown of MCPIP1 may serve as a potential target for gene therapy of AAA.
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Losko M, Dolicka D, Pydyn N, Jankowska U, Kedracka-Krok S, Kulecka M, Paziewska A, Mikula M, Major P, Winiarski M, Budzynski A, Jura J. Integrative genomics reveal a role for MCPIP1 in adipogenesis and adipocyte metabolism. Cell Mol Life Sci 2020; 77:4899-919. [PMID: 31893310 DOI: 10.1007/s00018-019-03434-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 11/23/2019] [Accepted: 12/18/2019] [Indexed: 12/31/2022]
Abstract
Obesity is considered a serious chronic disease, associated with an increased risk of developing cardiovascular diseases, non-alcoholic fatty liver disease and type 2 diabetes. Monocyte chemoattractant protein-1-induced protein-1 (MCPIP1) is an RNase decreasing stability of transcripts coding for inflammation-related proteins. In addition, MCPIP1 plays an important role in the regulation of adipogenesis in vitro by reducing the expression of key transcription factors, including C/EBPβ. To elucidate the role of MCPIP1 in adipocyte biology, we performed RNA-Seq and proteome analysis in 3T3-L1 adipocytes overexpressing wild-type (WTMCPIP1) and the mutant form of MCPIP1 protein (D141NMCPIP1). Our RNA-Seq analysis followed by confirmatory Q-RT-PCR revealed that elevated MCPIP1 levels in 3T3-L1 adipocytes upregulated transcripts encoding proteins involved in signal transmission and cellular remodeling and downregulated transcripts of factors involved in metabolism. These data are consistent with our proteomic analysis, which showed that MCPIP1 expressing adipocytes exhibit upregulation of proteins involved in cellular organization and movement and decreased levels of proteins involved in lipid and carbohydrate metabolism. Moreover, MCPIP1 adipocytes are characterized by decreased level of insulin receptor, reduced insulin-induced Akt phosphorylation, as well as depleted Glut4 level and impaired glucose uptake. Overexpression of Glut4 in 3T3-L1 cells expressed WTMCPIP1 rescued adipogenesis. Interestingly, we found decreased level of MCPIP1 along with an increase in body mass index in subcutaneous adipose tissue. The presented data show a novel role of MCPIP1 in modulating insulin sensitivity in adipocytes. Overall, our findings demonstrate that MCPIP1 is an important regulator of adipogenesis and adipocyte metabolism.
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Konieczny P, Lichawska-Cieslar A, Kwiecinska P, Cichy J, Pietrzycka R, Szukala W, Declercq W, Devos M, Paziewska A, Rumienczyk I, Kulecka M, Mikula M, Fu M, Borowczyk J, Santamaria-Babí LF, Jura J. Keratinocyte-specific ablation of Mcpip1 impairs skin integrity and promotes local and systemic inflammation. J Mol Med (Berl) 2019; 97:1669-1684. [PMID: 31786670 DOI: 10.1007/s00109-019-01853-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 05/21/2019] [Revised: 10/08/2019] [Accepted: 11/07/2019] [Indexed: 12/13/2022]
Abstract
MCPIP1 (Regnase-1, encoded by the ZC3H12A gene) regulates the mRNA stability of several inflammatory cytokines. Due to the critical role of this RNA endonuclease in the suppression of inflammation, Mcpip1 deficiency in mice leads to the development of postnatal multiorgan inflammation and premature death. Here, we generated mice with conditional deletion of Mcpip1 in the epidermis (Mcpip1EKO). Mcpip1 loss in keratinocytes resulted in the upregulated expression of transcripts encoding factors related to inflammation and keratinocyte differentiation, such as IL-36α/γ cytokines, S100a8/a9 antibacterial peptides, and Sprr2d/2h proteins. Upon aging, the Mcpip1EKO mice showed impaired skin integrity that led to the progressive development of spontaneous skin pathology and systemic inflammation. Furthermore, we found that the lack of epidermal Mcpip1 expression impaired the balance of keratinocyte proliferation and differentiation. Overall, we provide evidence that keratinocyte-specific Mcpip1 activity is crucial for the maintenance of skin integrity as well as for the prevention of excessive local and systemic inflammation. KEY MESSAGES: Loss of murine epidermal Mcpip1 upregulates transcripts related to inflammation and keratinocyte differentiation. Keratinocyte Mcpip1 function is essential to maintain the integrity of skin in adult mice. Ablation of Mcpip1 in mouse epidermis leads to the development of local and systemic inflammation.
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Affiliation(s)
- Piotr Konieczny
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Agata Lichawska-Cieslar
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Patrycja Kwiecinska
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Joanna Cichy
- Department of Immunology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Roza Pietrzycka
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Weronika Szukala
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland
| | - Wim Declercq
- Molecular Signaling and Cell Death Unit, VIB Center for Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
| | - Michael Devos
- Molecular Signaling and Cell Death Unit, VIB Center for Inflammation Research Center, Ghent, Belgium.,Department of Biomedical Molecular Biology, Ghent University, Technologiepark 71, 9052, Ghent, Belgium
| | - Agnieszka Paziewska
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Izabela Rumienczyk
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Maria Kulecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Marymoncka 99/103, 01-813, Warsaw, Poland
| | - Michal Mikula
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Roentgena 5, 02-781, Warsaw, Poland
| | - Mingui Fu
- Department of Biomedical Science and Shock/Trauma Research Center, School of Medicine, University of Missouri-Kansas City, 5100 Rockhill Rd, Kansas City, MO, 64110, USA
| | - Julia Borowczyk
- Department of Cell Biology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.,Current address: Department of Pathology and Immunology, Faculty of Medicine, University of Geneva, Rue Gabrielle Perret-Gentil 4, 1211, Geneva, Switzerland
| | - Luis F Santamaria-Babí
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, University de Barcelona, Gran Via de les Corts Catalanes 585, 08007, Barcelona, Spain
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387, Krakow, Poland.
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Abstract
Monocyte chemotactic protein-1 (MCP-1) plays a crucial role in ischemia-reperfusion (I/R) injury; however, the detailed mechanism of MCP-1 in I/R injury-induced cardiomyocyte apoptosis remains unclear. In this study, we explored the cascade downstream of I/R-induced MCP-1 that modulates cell apoptosis and determined whether Ca2+-sensing receptors (CaSRs) are involved in the process. Protein levels were detected in a cardiac muscle cell line (HL-1) and primary cultured neonatal mouse ventricular cardiomyocytes using Western blotting and immunocytochemistry. Released MCP-1 was detected using ELISA. Both Hoechst staining and flow cytometry methods were used to measure cell apoptosis. Specific pharmacological inhibitors of CC chemokine receptor 2 (RS-102895) and CaSR (NPS-2143) as well as a CaSR activator (evocalcet) were applied to confirm the roles of these factors in I/R-induced cell apoptosis. I/R inhibited cell viability and upregulated cell apoptosis. Moreover, I/R induced the release of MCP-1 from both HL-1 cells and primary cardiomyocytes. Further research confirmed that CaSR acted as an upstream effector of monocyte chemotactic protein-1-induced protein-1 (MCPIP1) and coordinately regulated cell apoptosis, which was verified by addition of an inhibitor or activator of CaSR. Moreover, MCPIP1 induced cell apoptosis through endoplasmic reticulum (ER) stress but not autophagy induced by I/R. Based on these findings, I/R-induced MCP-1 release regulates cardiomyocyte apoptosis via the MCPIP1 and CaSR pathways, suggesting a new therapeutic strategy for I/R injury.NEW & NOTEWORTHY Ischemia-reperfusion (I/R)-induced monocyte chemotactic protein-1 release regulates cardiomyocyte apoptosis via the monocyte chemotactic protein-1-induced protein-1 (MCPIP1) and Ca2+-sensing receptor pathway. The functional changes mediated by MCPIP1 involve the activation of endoplasmic reticulum stress, but not the autophagy pathway, after I/R injury.
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Affiliation(s)
- Wei Zhang
- Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu, China
| | - Tiebing Zhu
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Lulu Chen
- Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu, China.,Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China
| | - Wei Luo
- Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu, China
| | - Jie Chao
- Department of Physiology, Medical School of Southeast University, Nanjing, Jiangsu, China.,Department of Respiration, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China.,Key Laboratory of Environmental Medicine Engineering, Ministry of Education, School of Public Health, Southeast University, Nanjing, Jiangsu, China
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9
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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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Kidoya H, Muramatsu F, Shimamura T, Jia W, Satoh T, Hayashi Y, Naito H, Kunisaki Y, Arai F, Seki M, Suzuki Y, Osawa T, Akira S, Takakura N. Regnase-1-mediated post-transcriptional regulation is essential for hematopoietic stem and progenitor cell homeostasis. Nat Commun 2019; 10:1072. [PMID: 30842549 PMCID: PMC6403248 DOI: 10.1038/s41467-019-09028-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 02/18/2019] [Indexed: 02/06/2023] Open
Abstract
The balance between self-renewal and differentiation of hematopoietic stem and progenitor cells (HSPCs) maintains hematopoietic homeostasis, failure of which can lead to hematopoietic disorder. HSPC fate is controlled by signals from the bone marrow niche resulting in alteration of the stem cell transcription network. Regnase-1, a member of the CCCH zinc finger protein family possessing RNAse activity, mediates post-transcriptional regulatory activity through degradation of target mRNAs. The precise function of Regnase-1 has been explored in inflammation-related cytokine expression but its function in hematopoiesis has not been elucidated. Here, we show that Regnase-1 regulates self-renewal of HSPCs through modulating the stability of Gata2 and Tal1 mRNA. In addition, we found that dysfunction of Regnase-1 leads to the rapid onset of abnormal hematopoiesis. Thus, our data reveal that Regnase-1-mediated post-transcriptional regulation is required for HSPC maintenance and suggest that it represents a leukemia tumor suppressor.
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Affiliation(s)
- Hiroyasu Kidoya
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita,, 565-0871, Japan.
| | - Fumitaka Muramatsu
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita,, 565-0871, Japan
| | - Teppei Shimamura
- Division of Systems Biology, Graduate School of Medicine, Nagoya University, 65 Tsurumai-cho, Nagoya, Showa-ku,, 466-8550, Japan
| | - Weizhen Jia
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita,, 565-0871, Japan
| | - Takashi Satoh
- Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita, 565-0871, Japan
| | - Yumiko Hayashi
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita,, 565-0871, Japan
| | - Hisamichi Naito
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita,, 565-0871, Japan
| | - Yuya Kunisaki
- Department of Stem Cell Biology and Medicine/Cancer Stem Cell Research, Kyushu University, 3-1-1 Maidashi, Fukuoka, Higashi-ku, 812-8582, Japan
| | - Fumio Arai
- Department of Stem Cell Biology and Medicine/Cancer Stem Cell Research, Kyushu University, 3-1-1 Maidashi, Fukuoka, Higashi-ku, 812-8582, Japan
| | - Masahide Seki
- Department of Medical Genome Sciences Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8561, Japan
| | - Yutaka Suzuki
- Department of Medical Genome Sciences Graduate School of Frontier Sciences, The University of Tokyo, Chiba, 277-8561, Japan
| | - Tsuyoshi Osawa
- Division of Integrative Nutriomics and Oncology, Research Center for Advanced Science and Technology, The University of Tokyo, 4-6-1 Komaba, Tokyo, Meguro-ku, 153-8904, Japan
| | - Shizuo Akira
- Department of Host Defense, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita, 565-0871, Japan.,Laboratory of Host Defense, World Premier Institute Immunology Frontier Research Center, Osaka University, Osaka, 565-0871, Japan
| | - Nobuyuki Takakura
- Department of Signal Transduction, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamada-oka, Osaka, Suita,, 565-0871, Japan.
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Losko M, Lichawska-Cieslar A, Kulecka M, Paziewska A, Rumienczyk I, Mikula M, Jura J. Ectopic overexpression of MCPIP1 impairs adipogenesis by modulating microRNAs. Biochim Biophys Acta Mol Cell Res 2017; 1865:186-195. [PMID: 28939056 DOI: 10.1016/j.bbamcr.2017.09.010] [Citation(s) in RCA: 14] [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] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 09/15/2017] [Accepted: 09/18/2017] [Indexed: 01/12/2023]
Abstract
Adipogenesis is a process of preadipocyte differentiation that requires action of numerous factors. Monocyte chemoattractant protein-1-induced protein 1 (MCPIP1) possesses the N-terminus of the PilT protein (PilT N-terminus or PIN domain) that has RNase properties. This protein degrades transcripts coding for inflammation and differentiation - related proteins. Moreover, MCPIP1 is a broad suppressor of the miRNA biogenesis. We previously found that MCPIP1 degrades transcript encoding CCAAT/Enhancer Binding Protein Beta (C/EBPβ) and influences adipogenesis. Subsequently, we aimed to determine adipocyte miRNA expression profile in differentiating mouse preadipocytes, 3T3-L1, by overexpressing MCPIP1. Using Next-Generation Sequencing (NSG) we showed that MCPIP1 overexpression results in modulated levels of 58 miRNAs in adipocytes on day 2 of differentiation. Among them, 30 miRNAs showed significantly reduced levels and 28 showed increased levels in comparison to control. Approximately one third of the modulated miRNAs were not previously reported to be involved in adipocytes differentiation. Our analysis revealed that 24 down-regulated and 23 up-regulated miRNAs (at least 1.5-fold) influence 19 signaling pathways that are important for adipogenesis. Furthermore, reduced miRNA levels result in the up-regulation of their targets. By using luciferase reporter assay, we demonstrated that miR-32-5p and miR-9-3p directly target the 3'UTR region of Mapk8 and Tiam1, respectively. In addition, activation of MAP kinases pathway (JNK and p38), proposed as being regulated by down-regulated miRNAs, was higher in WTMCPIP1 than in D141NMCPIP1 or control 3T3-L1 adipocytes. Our results indicate a considerable impact of MCPIP1 on miRNAs levels and its significance in adipogenesis.
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Affiliation(s)
- Magdalena Losko
- Department of General Biochemistry, Jagiellonian University, Krakow, Poland
| | | | - Maria Kulecka
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Agnieszka Paziewska
- Department of Gastroenterology, Hepatology and Clinical Oncology, Medical Center for Postgraduate Education, Warsaw, Poland
| | - Izabela Rumienczyk
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Michal Mikula
- Department of Genetics, Maria Sklodowska-Curie Memorial Cancer Center and Institute of Oncology, Warsaw, Poland
| | - Jolanta Jura
- Department of General Biochemistry, Jagiellonian University, Krakow, Poland.
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12
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Ottoboni L, Merlini A, Martino G. Neural Stem Cell Plasticity: Advantages in Therapy for the Injured Central Nervous System. Front Cell Dev Biol 2017; 5:52. [PMID: 28553634 PMCID: PMC5427132 DOI: 10.3389/fcell.2017.00052] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [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: 02/01/2017] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
The physiological and pathological properties of the neural germinal stem cell niche have been well-studied in the past 30 years, mainly in animals and within given limits in humans, and knowledge is available for the cyto-architectonic structure, the cellular components, the timing of development and the energetic maintenance of the niche, as well as for the therapeutic potential and the cross talk between neural and immune cells. In recent years we have gained detailed understanding of the potentiality of neural stem cells (NSCs), although we are only beginning to understand their molecular, metabolic, and epigenetic profile in physiopathology and, further, more can be invested to measure quantitatively the activity of those cells, to model in vitro their therapeutic responses or to predict interactions in silico. Information in this direction has been put forward for other organs but is still limited in the complex and very less accessible context of the brain. A comprehensive understanding of the behavior of endogenous NSCs will help to tune or model them toward a desired response in order to treat complex neurodegenerative diseases. NSCs have the ability to modulate multiple cellular functions and exploiting their plasticity might make them into potent and versatile cellular drugs.
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Affiliation(s)
- Linda Ottoboni
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Arianna Merlini
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Gianvito Martino
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
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Mao R, Yang R, Chen X, Harhaj EW, Wang X, Fan Y. Regnase-1, a rapid response ribonuclease regulating inflammation and stress responses. Cell Mol Immunol 2017; 14:412-422. [PMID: 28194024 PMCID: PMC5423090 DOI: 10.1038/cmi.2016.70] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [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: 09/03/2016] [Revised: 11/17/2016] [Accepted: 11/17/2016] [Indexed: 02/07/2023] Open
Abstract
RNA-binding proteins (RBPs) are central players in post-transcriptional regulation and immune homeostasis. The ribonuclease and RBP Regnase-1 exerts critical roles in both immune cells and non-immune cells. Its expression is rapidly induced under diverse conditions including microbial infections, treatment with inflammatory cytokines and chemical or mechanical stimulation. Regnase-1 activation is transient and is subject to negative feedback mechanisms including proteasome-mediated degradation or mucosa-associated lymphoid tissue 1 (MALT1) mediated cleavage. The major function of Regnase-1 is promoting mRNA decay via its ribonuclease activity by specifically targeting a subset of genes in different cell types. In monocytes, Regnase-1 downregulates IL-6 and IL-12B mRNAs, thus mitigating inflammation, whereas in T cells, it restricts T-cell activation by targeting c-Rel, Ox40 and Il-2 transcripts. In cancer cells, Regnase-1 promotes apoptosis by inhibiting anti-apoptotic genes including Bcl2L1, Bcl2A1, RelB and Bcl3. Together with up-frameshift protein-1 (UPF1), Regnase-1 specifically cleaves mRNAs that are active during translation by recognizing a stem-loop (SL) structure within the 3'UTRs of these genes in endoplasmic reticulum-bound ribosomes. Through this mechanism, Regnase-1 rapidly shapes mRNA profiles and associated protein expression, restricts inflammation and maintains immune homeostasis. Dysregulation of Regnase-1 has been described in a multitude of pathological states including autoimmune diseases, cancer and cardiovascular diseases. Here, we provide a comprehensive update on the function, regulation and molecular mechanisms of Regnase-1, and we propose that Regnase-1 may function as a master rapid response gene for cellular adaption triggered by microenvironmental changes.
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Affiliation(s)
- Renfang Mao
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Riyun Yang
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Xia Chen
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Edward W Harhaj
- Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins School of Medicine, Baltimore, MD 21287, USA
| | - Xiaoying Wang
- Department of Immunology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
| | - Yihui Fan
- Basic Medical Research Center, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
- Department of Immunology, School of Medicine, Nantong University, Nantong, Jiangsu 226001, People's Republic of China
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14
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Boratyn E, Nowak I, Durbas M, Horwacik I, Sawicka A, Rokita H. MCPIP1 Exogenous Overexpression Inhibits Pathways Regulating MYCN Oncoprotein Stability in Neuroblastoma. J Cell Biochem 2017; 118:1741-1755. [DOI: 10.1002/jcb.25832] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Accepted: 12/07/2016] [Indexed: 12/27/2022]
Affiliation(s)
- Elżbieta Boratyn
- Faculty of Biochemistry, Biophysics and Biotechnology; Laboratory of Molecular Genetics and Virology, Jagiellonian University; Gronostajowa 7 30-387 Kraków Poland
| | - Iwona Nowak
- Faculty of Biochemistry, Biophysics and Biotechnology; Laboratory of Molecular Genetics and Virology, Jagiellonian University; Gronostajowa 7 30-387 Kraków Poland
| | - Małgorzata Durbas
- Faculty of Biochemistry, Biophysics and Biotechnology; Laboratory of Molecular Genetics and Virology, Jagiellonian University; Gronostajowa 7 30-387 Kraków Poland
| | - Irena Horwacik
- Faculty of Biochemistry, Biophysics and Biotechnology; Laboratory of Molecular Genetics and Virology, Jagiellonian University; Gronostajowa 7 30-387 Kraków Poland
| | - Anna Sawicka
- Faculty of Biochemistry, Biophysics and Biotechnology; Laboratory of Molecular Genetics and Virology, Jagiellonian University; Gronostajowa 7 30-387 Kraków Poland
| | - Hanna Rokita
- Faculty of Biochemistry, Biophysics and Biotechnology; Laboratory of Molecular Genetics and Virology, Jagiellonian University; Gronostajowa 7 30-387 Kraków Poland
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Rex EB, Shukla N, Gu S, Bredt D, DiSepio D. A Genome-Wide Arrayed cDNA Screen to Identify Functional Modulators of α7 Nicotinic Acetylcholine Receptors. SLAS Discov 2016; 22:155-165. [PMID: 27789755 DOI: 10.1177/1087057116676086] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cellular signaling is in part regulated by the composition and subcellular localization of a series of protein interactions that collectively form a signaling complex. Using the α7 nicotinic acetylcholine receptor (α7nAChR) as a proof-of-concept target, we developed a platform to identify functional modulators (or auxiliary proteins) of α7nAChR signaling. The Broad cDNA library was transiently cotransfected with α7nAChR cDNA in HEK293T cells in a high-throughput fashion. Using this approach in combination with a functional assay, we identified positive modulators of α7nAChR activity. We identified known positive modulators/auxiliary proteins present in the cDNA library that regulate α7nAChR signaling, in addition to identifying novel modulators of α7nAChR signaling. These included NACHO, SPDYE11, TCF4, and ZC3H12A, all of which increased PNU-120596-mediated nicotine-dependent calcium flux. Importantly, these auxiliary proteins did not modulate GluR1(o)-mediated Ca flux. To elucidate a possible mechanism of action, we employed an α7nAChR-HA surface staining assay. NACHO enhanced α7nAChR surface expression; however, the mechanism responsible for the SPDYE11-, TCF4-, and ZC3H12A-dependent modulation of α7nAChR has yet to be defined. This report describes the development and validation of a high-throughput, genome-wide cDNA screening platform coupled to FLIPR functional assays in order to identify functional modulators of α7nAChR signaling.
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Affiliation(s)
- Elizabeth B Rex
- 1 Discovery Sciences, Janssen Research and Development LLC, La Jolla, CA, USA
| | - Nikhil Shukla
- 1 Discovery Sciences, Janssen Research and Development LLC, La Jolla, CA, USA
| | - Shenyan Gu
- 2 Neuroscience, Janssen Research and Development LLC, La Jolla, CA, USA
| | - David Bredt
- 2 Neuroscience, Janssen Research and Development LLC, La Jolla, CA, USA
| | - Daniel DiSepio
- 1 Discovery Sciences, Janssen Research and Development LLC, La Jolla, CA, USA
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Ruiz-Romeu E, Ferran M, Giménez-Arnau A, Bugara B, Lipert B, Jura J, Florencia EF, Prens EP, Celada A, Pujol RM, Santamaria-Babí LF. MCPIP1 RNase Is Aberrantly Distributed in Psoriatic Epidermis and Rapidly Induced by IL-17A. J Invest Dermatol 2016; 136:1599-1607. [PMID: 27180111 DOI: 10.1016/j.jid.2016.04.030] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 03/18/2016] [Accepted: 04/04/2016] [Indexed: 01/27/2023]
Abstract
ZC3H12A, which encodes the RNase monocyte chemotactic protein-induced protein 1 (MCPIP1), is up-regulated in psoriatic skin and reduced to normal levels after clinical treatments with anti-IL-17A/IL-17R neutralizing antibodies. In IL-17A-stimulated keratinocytes, MCPIP1 is rapidly increased at the transcript and protein levels. Also, IL-17A was found to be the main inducer of ZC3H12A expression in keratinocytes treated with supernatants derived from a Streptococcus pyogenes-activated psoriatic ex vivo model based on the co-culture of psoriatic cutaneous lymphocyte-associated antigen (CLA(+)) T cells and lesional epidermal cells. Moreover, MCPIP1 was aberrantly distributed in the suprabasal layers of psoriatic epidermis. In psoriatic samples, IL-17A-stimulated epidermal cell suspensions showed an increased MCPIP1 expression, especially in the mid-differentiated cellular compartment. The knockdown of ZC3H12A showed that this RNase participates in the regulation of the mRNAs present in suprabasal differentiated keratinocytes. Furthermore, JAK/STAT3 inhibition prevented the IL-17A-dependent induction of MCPIP1. In the mouse model of imiquimod-induced psoriasis, Zc3h12a expression was abrogated in Il17ra(-/-) mice. These results support the notion that IL-17A-mediated induction of MCPIP1 is involved in the regulation of local altered gene expression in suprabasal epidermal layers in psoriasis.
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Affiliation(s)
- Ester Ruiz-Romeu
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Marta Ferran
- Department of Dermatology, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ana Giménez-Arnau
- Department of Dermatology, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Beata Bugara
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Barbara Lipert
- 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
| | - Edwin F Florencia
- Department of Dermatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Errol P Prens
- Department of Dermatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands
| | - Antonio Celada
- Macrophage Biology Group, Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain
| | - Ramon M Pujol
- Department of Dermatology, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Luis F Santamaria-Babí
- Translational Immunology, Department of Cellular Biology, Physiology and Immunology, Faculty of Biology, Universitat de Barcelona, Barcelona, Spain.
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17
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Xu Y, An BY, Xi XB, Li ZW, Li FY. MicroRNA-9 controls apoptosis of neurons by targeting monocyte chemotactic protein-induced protein 1 expression in rat acute spinal cord injury model. Brain Res Bull 2016; 121:233-40. [PMID: 26812136 DOI: 10.1016/j.brainresbull.2016.01.011] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/30/2015] [Accepted: 01/21/2016] [Indexed: 01/07/2023]
Abstract
OBJECTIVE For the purpose of an early identification of intervention targets for acute spinal cord injury (ASCI), we investigated the changes in expression levels of microRNA-9 (miR-9) and MCPIP1 in rat ASCI model. METHOD A total of 108 healthy rats were randomly divided into non-ASCI group (n=18) and five ASCI groups, 6h, 12h, 24h, 3 days and 7 days, representing the experimental time points following ASCI (n=18 per group). Hematoxylin and eosin (HE) staining was used to assess the ASCI damage, and quantitative real-time PCR (qRT-PCR) and in situ hybridization (ISH) were employed for the detection of miR-9 and MCPIP1 mRNA expression. RESULTS HE staining results showed normal neuronal morphology in the non-ASCI group, but spinal cord tissue at 6h after ASCI showed developing neuronal necrosis. Acute inflammatory response was evident at 12h and 24h, with immune cells infiltrating into the gray matter. Vascular permeability increased and the nerve cells in gray-white matter exhibited extensive damage and necrosis at 24h and 7 days after ASCI. MiR-9 expression in ASCI tissue was significantly lower than that in normal spinal cord tissue. Statistical analysis showed a significant decrease in miR-9 expression in all the ASCI groups, compared to the non-ASCI group. Results from real-time PCR analysis revealed that MCPIP1 expression in all the ASCI groups was significantly higher than the non-ASCI group, and MCPIP1 expressions gradually increased with times at 6h-24h after ASCI. ISH revealed the following results after ASCI (1) miR-9 and MCPIP1 mRNA expression mainly distributed in ventral horn motor neurons, (2) miR-9 expression was high at 7 day after ASCI and (3) in the non-ASCI group, MCPIP1 expression was high at 6h, 12h, 24h and 3 days. CONCLUSION MCPIP1 is significantly up-regulated after ASCI. The negative relationship between MCPIP1 and miR-9 suggest that MCPIP1 mRNA could be a target of miR-9 during ASCI. Thus, miR-9 is a marker for apoptosis in neurons, and an excellent therapeutic target for ASCI patients.
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Affiliation(s)
- Yong Xu
- Shanghai Traumatology and Orthopedics Research Institute, Shanghai 200020, China; Department of Traumatology, Ruijin Hospital, Shanghai Jiaotong University School of Medcine, Shanghai 200025, China.
| | - Bao-Yan An
- Department of Infectious Diseases, Ruijin Hospital, Shanghai Jiaotong University School of Medcine, Shanghai 200025, China
| | - Xiao-Bing Xi
- Department of Traumatology, Ruijin Hospital, Shanghai Jiaotong University School of Medcine, Shanghai 200025, China
| | - Zhong-Wei Li
- Shanghai Traumatology and Orthopedics Research Institute, Shanghai 200020, China; Department of Traumatology, Ruijin Hospital, Shanghai Jiaotong University School of Medcine, Shanghai 200025, China
| | - Fei-Yue Li
- Shanghai Traumatology and Orthopedics Research Institute, Shanghai 200020, China; Department of Traumatology, Ruijin Hospital, Shanghai Jiaotong University School of Medcine, Shanghai 200025, China
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18
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Boratyn E, Nowak I, Horwacik I, Durbas M, Mistarz A, Kukla M, Kaczówka P, Łastowska M, Jura J, Rokita H. Monocyte Chemoattractant Protein-Induced Protein 1 Overexpression Modulates Transcriptome, Including MicroRNA, in Human Neuroblastoma Cells. J Cell Biochem 2015; 117:694-707. [PMID: 26308737 DOI: 10.1002/jcb.25354] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Accepted: 08/24/2015] [Indexed: 12/12/2022]
Abstract
The recently discovered MCPIP1 (monocyte chemoattractant protein-induced protein 1), a multidomain protein encoded by the MCPIP1 (ZC3H12A) gene, has been described as a new differentiation factor, a ribonuclease, and a deubiquitination-supporting factor. However, its role in cancer is poorly recognized. Our recent analysis of microarrays data showed a lack of expression of the MCPIP1 transcript in primary neuroblastoma, the most common extracranial solid tumor in children. Additionally, enforced expression of the MCPIP1 gene in BE(2)-C cells caused a significant decrease in neuroblastoma proliferation and viability. Aim of the present study was to further investigate the role of MCPIP1 in neuroblastoma, using expression DNA microarrays and microRNA microarrays. Transient transfections of BE(2)-C cells were used for overexpression of either wild type of MCPIP1 (MCPIP1-wt) or its RN-ase defective mutant (MCPIP1-ΔPIN). We have analyzed changes of transcriptome and next, we have used qRT-PCR to verify mRNA levels of selected genes responding to MCPIP1 overexpression. Additionally, protein levels were determined for some of the selected genes. The choline transporter, CTL1, encoded by the SLC44A1 gene, was significantly repressed at the specific mRNA and protein levels and most importantly this translated into a decreased choline transport in MCPIP1-overexpressing cells. Then, we have found microRNA-3613-3p as the mostly altered in the pools of cells overexpressing the wild type MCPIP1. Next, we analyzed the predicted targets of the miR-3613-3p and validated them using qRT-PCR and western blot. These results indicate that the expression of miR-3613-3p might be regulated by MCPIP1 by cleavage of its precursor form.
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Affiliation(s)
- Elżbieta Boratyn
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Iwona Nowak
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Irena Horwacik
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Małgorzata Durbas
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Anna Mistarz
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Magdalena Kukla
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Przemysław Kaczówka
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Maria Łastowska
- Department of Pathology, Institute "Pomnik - Centrum Zdrowia Dziecka", Aleja Dzieci Polskich 20, Warszawa, 04-730, Poland
| | - Jolanta Jura
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
| | - Hanna Rokita
- Laboratory of Molecular Genetics and Virology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, Kraków, 30-387, Poland
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da Rocha JF, da Cruz e Silva OAB, Vieira SI. Analysis of the amyloid precursor protein role in neuritogenesis reveals a biphasic SH-SY5Y neuronal cell differentiation model. J Neurochem 2015; 134:288-301. [DOI: 10.1111/jnc.13133] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 03/17/2015] [Accepted: 04/16/2015] [Indexed: 01/04/2023]
Affiliation(s)
- Joana Fernandes da Rocha
- Laboratório de Neurociências e Sinalização Celular; CBC and iBiMED; Secção Autónoma de Ciências da Saúde; Universidade de Aveiro; Aveiro Portugal
| | - Odete A. B. da Cruz e Silva
- Laboratório de Neurociências e Sinalização Celular; CBC and iBiMED; Secção Autónoma de Ciências da Saúde; Universidade de Aveiro; Aveiro Portugal
| | - Sandra Isabel Vieira
- Laboratório de Neurociências e Sinalização Celular; CBC and iBiMED; Secção Autónoma de Ciências da Saúde; Universidade de Aveiro; Aveiro Portugal
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20
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Tu J, Chen B, Yang L, Qi K, Lu J, Zhao D. Amyloid-β Activates Microglia and Regulates Protein Expression in a Manner Similar to Prions. J Mol Neurosci 2015; 56:509-18. [PMID: 25869610 DOI: 10.1007/s12031-015-0553-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 03/24/2015] [Indexed: 10/23/2022]
Abstract
Prions are the only convincingly demonstrated proteinaceous infectious particle, yet recent studies find that amyloid-β peptide (Aβ) aggregates are capable of self-propagation, which induces amyloidosis pathology in Alzheimer's disease (AD) model mice that is similar to the self-propagation phenomenon of prions in neurons. Gliosis is a common hallmark of AD and prion diseases, in which activated microglia accumulate around abnormal protein deposits. Analyses of the characteristics of activated microglia induced by Aβ in comparison with those induced by prions will provide new insight into the pathogenesis of AD. Therefore, we compared the characteristics of BV-2 cells (model microglia) activated by Aβ fibrillar peptides (Aβ1-42) and prions (PrP106-126). Aβ1-42 and PrP106-126, as well as the supernatants of the media collected from BV-2 cells cocultured with Aβ1-42 and PrP106-126, were potent activators of BV-2 microglial activity, but the chemotaxis index (CI) induced by Aβ1-42 was significantly higher than that induced by PrP106-126 at each concentration. Aβ1-42 and PrP106-126 increased the proliferation index (PI) and upregulated monocyte chemoattractant protein-1 (MCP-1) and transforming growth factor beta 1 (TGF-β1) expression after 12 h of exposure. Our results show that Aβ activates microglia and regulates microglial protein expression in a manner similar to prions and, thus, provide new insight into the pathogenesis of AD.
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Affiliation(s)
- Jian Tu
- State Key Laboratories for Agrobiotechnology, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, 100193, Beijing, China,
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21
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Ali-Rahmani F, Schengrund CL, Connor JR. HFE gene variants, iron, and lipids: a novel connection in Alzheimer's disease. Front Pharmacol 2014; 5:165. [PMID: 25071582 PMCID: PMC4086322 DOI: 10.3389/fphar.2014.00165] [Citation(s) in RCA: 30] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2014] [Accepted: 06/24/2014] [Indexed: 12/14/2022] Open
Abstract
Iron accumulation and associated oxidative stress in the brain have been consistently found in several neurodegenerative diseases. Multiple genetic studies have been undertaken to try to identify a cause of neurodegenerative diseases but direct connections have been rare. In the iron field, variants in the HFE gene that give rise to a protein involved in cellular iron regulation, are associated with iron accumulation in multiple organs including the brain. There is also substantial epidemiological, genetic, and molecular evidence of disruption of cholesterol homeostasis in several neurodegenerative diseases, in particular Alzheimer's disease (AD). Despite the efforts that have been made to identify factors that can trigger the pathological events associated with neurodegenerative diseases they remain mostly unknown. Because molecular phenotypes such as oxidative stress, synaptic failure, neuronal loss, and cognitive decline, characteristics associated with AD, have been shown to result from disruption of a number of pathways, one can easily argue that the phenotype seen may not arise from a linear sequence of events. Therefore, a multi-targeted approach is needed to understand a complex disorder like AD. This can be achieved only when knowledge about interactions between the different pathways and the potential influence of environmental factors on them becomes available. Toward this end, this review discusses what is known about the roles and interactions of iron and cholesterol in neurodegenerative diseases. It highlights the effects of gene variants of HFE (H63D- and C282Y-HFE) on iron and cholesterol metabolism and how they may contribute to understanding the etiology of complex neurodegenerative diseases.
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Affiliation(s)
- Fatima Ali-Rahmani
- Departments of Neurosurgery, Neural and Behavioral Sciences and Pediatrics, Center for Aging and Neurodegenerative Diseases, Penn State Hershey Medical CenterHershey, PA, USA
- Departments of Biochemistry and Molecular Biology, The Pennsylvania State University College of MedicineHershey, PA, USA
| | - Cara-Lynne Schengrund
- Departments of Biochemistry and Molecular Biology, The Pennsylvania State University College of MedicineHershey, PA, USA
| | - James R. Connor
- Departments of Neurosurgery, Neural and Behavioral Sciences and Pediatrics, Center for Aging and Neurodegenerative Diseases, Penn State Hershey Medical CenterHershey, PA, USA
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Skalniak L, Dziendziel M, Jura J. MCPIP1 contributes to the toxicity of proteasome inhibitor MG-132 in HeLa cells by the inhibition of NF-κB. Mol Cell Biochem 2014; 395:253-63. [PMID: 24992982 PMCID: PMC4131145 DOI: 10.1007/s11010-014-2134-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Accepted: 06/17/2014] [Indexed: 01/14/2023]
Abstract
Recently, we have shown that the treatment of cells with proteasome inhibitor MG-132 results in the induction of expression of monocyte chemotactic protein-1 induced protein 1 (MCPIP1). MCPIP1 is a ribonuclease, responsible for the degradation of transcripts encoding certain pro-inflammatory cytokines. The protein is also known as an inhibitor of NF-κB transcription factor. Thanks to its molecular properties, MCPIP1 is considered as a regulator of inflammation, differentiation, and survival. Using siRNA technology, we show here that MCPIP1 expression contributes to the toxic properties of MG-132 in HeLa cells. The inhibition of proteasome by MG-132 and epoxomicin markedly increased MCPIP1 expression. While MG-132 induces HeLa cell death, down-regulation of MCPIP1 expression by siRNA partially protects HeLa cells from MG-132 toxicity and restores Nuclear factor-κB (NF-κB) activity, inhibited by MG-132 treatment. Inversely, overexpression of MCPIP1 decreased constitutive activity of NF-κB and limited the survival of HeLa cells, as we have shown in the previous study. Interestingly, although MG-132 decreased the expression of IκBα and increased p65 phosphorylation, the inhibition of constitutive NF-κB activity was observed in MG-132-treated cells. Since the elevated constitutive activity of NF-κB is one of the mechanisms providing increased survival of cancer cells, including HeLa cells, we propose that death-promoting properties of MCPIP1 in MG-132-treated HeLa cells may, at least partially, derive from the negative effect on the constitutive NF-κB activity.
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Affiliation(s)
- Lukasz Skalniak
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387, Kraków, Poland
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Alvarez AA, Field M, Bushnev S, Longo MS, Sugaya K. The effects of histone deacetylase inhibitors on glioblastoma-derived stem cells. J Mol Neurosci 2014; 55:7-20. [PMID: 24874578 DOI: 10.1007/s12031-014-0329-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 05/09/2014] [Indexed: 12/13/2022]
Abstract
Glioblastoma multiforme (GBM) is the most malignant brain tumor with limited effective treatment options. Cancer stem cells (CSCs), a subpopulation of cancer cells with stem cell properties found in GBMs, have been shown to be extremely resistant to radiation and chemotherapeutic agents and have the ability to readily reform tumors. Therefore, the development of therapeutic agents targeting CSCs is extremely important. In this study, we isolated glioblastoma-derived stem cells (GDSCs) from GBM tissue removed from patients during surgery and analyzed their gene expression using quantitative real-time PCR and immunocytochemistry. We examined the effects of histone deacetylase inhibitors trichostatin A (TSA) and valproic acid (VPA) on the proliferation and gene expression profiles of GDSCs. The GDSCs expressed significantly higher levels of both neural and embryonic stem cell markers compared to GBM cells expanded in conventional monolayer cultures. Treatment of GDSCs with histone deacetylase inhibitors, TSA and VPA, significantly reduced proliferation rates of the cells and expression of the stem cell markers, indicating differentiation of the cells. Since differentiation into GBM makes them susceptible to the conventional cancer treatments, we posit that use of histone deacetylase inhibitors may increase efficacy of the conventional cancer treatments for eliminating GDSCs.
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Kwak YD, Hendrix BJ, Sugaya K. Secreted type of amyloid precursor protein induces glial differentiation by stimulating the BMP/Smad signaling pathway. Biochem Biophys Res Commun 2014; 447:394-9. [DOI: 10.1016/j.bbrc.2014.03.139] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Accepted: 03/27/2014] [Indexed: 01/22/2023]
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25
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SKALNIAK ANNA, BORATYN ELŻBIETA, TYRKALSKA SYLWIAD, HORWACIK IRENA, DURBAS MAŁGORZATA, ŁASTOWSKA MARIA, JURA JOLANTA, ROKITA HANNA. Expression of the monocyte chemotactic protein-1-induced protein 1 decreases human neuroblastoma cell survival. Oncol Rep 2014; 31:2385-92. [DOI: 10.3892/or.2014.3076] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 02/13/2014] [Indexed: 11/05/2022] Open
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26
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Yang L, Chao J, Kook YH, Gao Y, Yao H, Buch SJ. Involvement of miR-9/MCPIP1 axis in PDGF-BB-mediated neurogenesis in neuronal progenitor cells. Cell Death Dis 2013; 4:e960. [PMID: 24336080 PMCID: PMC3877557 DOI: 10.1038/cddis.2013.486] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [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: 10/02/2013] [Revised: 11/04/2013] [Accepted: 11/05/2013] [Indexed: 12/27/2022]
Abstract
Highly conserved microRNA-9 (miR-9) has a critical role in various cellular processes including neurogenesis. However, its regulation by neurotropins that are known to mediate neurogenesis remains poorly defined. In this study, we identify platelet-derived growth factor-BB (PDGF-BB)-mediated upregulation of miR-9, which in turn downregulates its target gene monocyte chemotactic protein-induced protein 1 (MCPIP1), as a key player in modulating proliferation, neuronal differentiation as well as migration of neuronal progenitor cells (NPCs). Results indicate that miR-9-mediated NPC proliferation and neuronal differentiation involves signaling via the nuclear factor-kappa B (NF-κB) and cAMP response element-binding protein (CREB) pathways, and that NPC migration involves CREB but not the NF-κB signaling. These findings thus suggest that miR-9-mediated downregulation of MCPIP1 acts as a molecular switch regulation of neurogenesis.
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Affiliation(s)
- L Yang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - J Chao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - Y H Kook
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - Y Gao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - H Yao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - S J Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
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Tu J, Yang L, Zhou X, Qi K, Wang J, Kouadir M, Xu L, Yin X, Zhao D. PrP106-126 and Aβ1-42 Peptides Induce BV-2 Microglia Chemotaxis and Proliferation. J Mol Neurosci 2013; 52:107-16. [DOI: 10.1007/s12031-013-0140-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 10/04/2013] [Indexed: 11/30/2022]
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Niu J, Wang K, Zhelyabovska O, Saad Y, Kolattukudy PE. MCP-1-induced protein promotes endothelial-like and angiogenic properties in human bone marrow monocytic cells. J Pharmacol Exp Ther 2013; 347:288-97. [PMID: 24008336 DOI: 10.1124/jpet.113.207316] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Monocytic cells enhance neovascularization by releasing proangiogenic mediators and/or by transdifferentiating into endothelial-like cells. However, the mechanisms that govern this transdifferentiation process are largely unknown. Recently, monocyte chemotactic protein-1 (MCP-1)-induced protein (MCPIP) has been identified as a novel CCCH-type zinc-finger protein expressed primarily in monocytic cells. Here, we analyzed whether MCPIP might exert angiogenic effects by promoting differentiation of monocytic cells into endothelial cell (EC)-like phenotype. The expression of MCPIP increased during MCP-1-induced transdifferentiation in human bone marrow mononuclear cells (BMNCs). Knockdown of MCPIP with small interfering RNA (siRNA) abolished MCP-1-induced expression of EC markers Flk-1 and Tie-2 in human BMNCs. BMNCs transfected with MCPIP expression vector displayed EC-like morphology accompanied by downregulation of monocytic markers CD14 and CD11b, upregulation of EC markers Flk-1 and Tie-2, induction of cadherin (cdh)-12 and -19, activation of endoplasmic reticulum (ER) stress, and autophagy. Knockdown of cdh-12 or cdh-19 markedly inhibited MCPIP-induced enhancement of cell attachment and EC-marker expression. Inhibition of ER stress by tauroursodeoxycholate abolished MCPIP-induced expression of EC markers. Inhibition of autophagy by knockdown of Beclin-1 with siRNA or by an autophagy inhibitor 3'-methyladenine inhibited MCPIP-induced expression of EC markers. Expression of MCPIP in BMNCs enhanced uptake of acetylated low-density lipoprotein (acLDL), formation of EC-colony, incorporation of cells into capillary-like structure on Matrigel, and exhibited increased neovascularization in the ischemic hindlimb in mice. These results demonstrate that MCPIP may be an important regulator of inflammatory angiogenesis and provide novel mechanistic insights into the link between MCP-1 and cardiovascular diseases.
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Affiliation(s)
- Jianli Niu
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, Florida (J N., O.Z., Y.S., P.E.K.); Department of Pathophysiology, Xiangya School of Medicine, Central South University, Changsha, Hunan, People's Republic of China (K.W.)
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29
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Abstract
The proteasome is a protein complex responsible for the degradation of polyubiquitin-tagged proteins. Besides the removal of target proteins, the proteasome also participates in the regulation of gene transcription in both proteolytic and non-proteolytic fashion. In this study the effect of proteasome inhibition on the basal expression of monocyte chemotactic protein-1 induced protein 1 (MCPIP1) was examined. Treatment of HepG2 or HeLa cells with proteasome inhibitor MG-132 resulted in a significant increase of MCPIP1 expression, both at mRNA and protein level. Interestingly, MG-132 did not alter MCPIP1 stability. Instead, the observed protein increase was blocked by actinomycin D, suggesting the involvement of de novo mRNA synthesis in the increase of MCPIP1 protein following MG-132 treatment. Using several inhibitors we determined the participation of extracellular-signal-regulated kinase 1/2 and p38 kinases in MCPIP1 upregulation by MG-132. Our findings show for the first time the impact of proteasome inhibition on MCPIP1 protein expression by modulation of the activity of intracellular signaling pathways. Overexpression of MCPIP1-myc protein decreased the viability of HeLa cells but not HepG2 cells, which correlates with the increased susceptibility of HeLa cells to MG-132 toxicity. Notably, both MG-132 treatment and MCPIP1-myc overexpression led to the activation of apoptosis, as revealed by the induction of caspases 3/7 in both types of cell lines. This suggests the involvement of MCPIP1 upregulation in toxic properties of proteasome inhibition, which is an acknowledged approach to the treatment of several cancer types.
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Affiliation(s)
- Lukasz Skalniak
- Department of General Biochemistry, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, 30-387 Krakow, Poland
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Lin RJ, Chien HL, Lin SY, Chang BL, Yu HP, Tang WC, Lin YL. MCPIP1 ribonuclease exhibits broad-spectrum antiviral effects through viral RNA binding and degradation. Nucleic Acids Res 2013; 41:3314-26. [PMID: 23355615 PMCID: PMC3597685 DOI: 10.1093/nar/gkt019] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [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: 10/07/2012] [Revised: 12/21/2012] [Accepted: 12/21/2012] [Indexed: 12/31/2022] Open
Abstract
Monocyte chemoattractant protein 1-induced protein 1 (MCPIP1), belonging to the MCPIP family with highly conserved CCCH-type zinc finger and Nedd4-BP1, YacP Nuclease domains, has been implicated in negative regulation of the cellular inflammatory responses. In this report, we demonstrate for the first time that this RNA-binding nuclease also targets viral RNA and possesses potent antiviral activities. Overexpression of the human MCPIP1, but not MCPIP2, MCPIP3 or MCPIP4, inhibited Japanese encephalitis virus (JEV) and dengue virus (DEN) replication. The functional analysis of MCPIP1 revealed that the activities of RNase, RNA binding and oligomerization, but not deubiqutinase, are required for its antiviral potential. Furthermore, infection of other positive-sense RNA viruses, such as sindbis virus and encephalomyocarditis virus, and negative-sense RNA virus, such as influenza virus, as well as DNA virus, such as adenovirus, can also be blocked by MCPIP1. Moreover, the endogenous MCPIP1 gene expression was induced by JEV and DEN infection, and knockdown of MCPIP1 expression enhanced the replication of JEV and DEN in human cells. Thus, MCPIP1 can act as a host innate defense via RNase activity for targeting and degrading viral RNA.
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Affiliation(s)
- Ren-Jye Lin
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Hsu-Ling Chien
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Shyr-Yi Lin
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Bi-Lan Chang
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Han-Pang Yu
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Wei-Chun Tang
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
| | - Yi-Ling Lin
- Department of General Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, Department of Primary Care Medicine, Taipei Medical University Hospital, Taipei 110, Taiwan, Institute of Biomedical Sciences, Academia Sinica, Taipei 115, Taiwan, Genomics Research Center, Academia Sinica, Taipei 115, Taiwan and Graduate Institute of Life Sciences, National Defense Medical Center, Taipei 114, Taiwan
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Abstract
β-secretase (or BACE1) is the key enzyme in the production of β-amyloid (Aβ), which accumulates in the senile plaques characteristic for Alzheimer's disease. Consequently, the lack of BACE1 prevents β-processing of the amyloid precursor protein and Aβ production, which made it a promising target for drug development. However, the loss of BACE1 is also detrimental, leading to myelination defects and altered neuronal activity, functions that have been associated with the cleavage of Neuregulin and a voltage-gated sodium channel subunit. Here we show that the Drosophila ortholog of BACE, dBACE, is required for glial survival. Cell-specific knockdown experiments reveal that this is a non-cell autonomous function, as a knockdown of dBACE in photoreceptor neurons leads to progressive degeneration of glia in their target zone, the lamina. Interestingly, this phenotype is suppressed by the loss of the fly amyloid precursor protein (APPL), whereas a secretion-deficient form of APPL enhances the degeneration. This shows that full-length APPL in neurons promotes the death of neighboring glial cells and that β-processing of APPL is needed to prevent glial death. These results therefore not only demonstrate a novel function for an APP protein in glia, but they also show this function specifically requires regulation by β-cleavage.
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Abstract
MCP-1-induced protein-1 (MCPIP1) is a newly identified protein that is crucial to immune regulation. Mice lacking MCPIP1 gene suffer from severe immune disorders, and most of them cannot survive longer than 12 weeks. Considerable progress has been made in revealing the mechanism underlying the immune regulatory function of MCPIP1. MCPIP1 can act as an RNase to promote the mRNA degradation of some inflammatory cytokines, such as IL-6 and IL-1. Pre-microRNAs are also confirmed to be the substrate of MCPIP1 RNase. The structure of MCPIP1 N-terminal conserved domain shows a PilT N-terminus-like RNase structure, further supporting the notion that MCPIP1 has RNase activity. MCPIP1 can also deubiquitinate TNF receptor-associated factor family proteins, which are known to mediate immune and inflammatory responses. In this review, we summarize recent progress on the immune regulatory role of MCPIP1 and discuss the mechanisms underlying its function.
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Affiliation(s)
- Jiwei Xu
- National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China
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Xu L, Sun Q, Jiang S, Li J, He C, Xu W. Changes in gene expression profiles of the hip joint ligament of patients with ankylosing spondylitis revealed by DNA chip. Clin Rheumatol 2012; 31:1479-91. [DOI: 10.1007/s10067-012-2038-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 04/19/2012] [Accepted: 07/11/2012] [Indexed: 11/25/2022]
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Jura J, Skalniak L, Koj A. Monocyte chemotactic protein-1-induced protein-1 (MCPIP1) is a novel multifunctional modulator of inflammatory reactions. Biochim Biophys Acta 2012; 1823:1905-13. [PMID: 22771441 DOI: 10.1016/j.bbamcr.2012.06.029] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Revised: 06/21/2012] [Accepted: 06/25/2012] [Indexed: 01/01/2023]
Abstract
The generalized inflammatory response leads to activation of hundreds of genes transcribed in an established sequence in specialized cells. Transcriptome analysis of human monocyte-derived cells stimulated with IL-1beta or with monocyte chemotactic protein-1 (MCP-1) has led to the identification of a new inflammation-related gene ZC3H12A encoding a chain of 599 amino acids corresponding to a 66-kDa protein. The protein, given a provisional name of MCPIP1 (monocyte chemotactic protein-induced protein-1), is expressed in several human and murine tissues such as bone marrow, spleen, heart and placenta. In in vivo studies, mice with inactivated MCPIP1-encoding gene showed growth retardation, lymphadenopathy, splenomegaly and enhanced inflammatory symptoms. Principal molecular features of MCPIP1 include a single zinc finger motif, an RNase-like PIN domain and ubiquitin-binding domain. Reports from independent laboratories suggest that MCPIP1 may function also as a deubiquitinase. Although MCPIP1 is regarded by some authors as a new transcription factor or cell differentiation factor modulating angiogenesis or adipogenesis, its principal function appears to be downregulation of inflammatory responses through at least two independent mechanisms: increased degradation of cytokine mRNAs and inhibition of LPS- and IL-1-induced NF-kappaB signaling pathway. The interference with NF-kappaB activation is highly complex and includes TRAF6 and TANK interaction with the ubiquitin-associated (UBA) domain of MCPIP1. Purified MCPIP1 protein was reported to degrade specific mRNA and cleave K48- and K63-linked polyubiquitin chains. Although some structural features and the mechanism of action of MCPIP1 are not fully explained yet, its importance in the regulation of inflammatory reactions has been firmly established.
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Affiliation(s)
- Jolanta Jura
- Department of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Wang K, Niu J, Kim H, Kolattukudy PE. Osteoclast precursor differentiation by MCPIP via oxidative stress, endoplasmic reticulum stress, and autophagy. J Mol Cell Biol 2011; 3:360-8. [PMID: 21990425 DOI: 10.1093/jmcb/mjr021] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
Osteoclasts (OCs) are responsible for bone resorption in inflammatory joint diseases. Monocyte chemotactic protein-1 (MCP-1) has been shown to induce differentiation of monocytes to OC precursors, but nothing is known about the underlying mechanisms. Here, we elucidate how MCPIP, induced by MCP-1, mediates this differentiation. Knockdown of MCPIP abolished MCP-1-mediated expression of OC markers, tartrate-resistant acid phosphatase, and serine protease cathepsin K. Expression of MCPIP induced p47(PHOX) and its membrane translocation, reactive oxygen species formation, and induction of endoplasmic reticulum (ER) stress chaperones, up-regulation of autophagy marker, Beclin-1, and lipidation of LC3, and induction of OC markers. Inhibition of oxidative stress attenuated ER stress and autophagy, and suppressed expression of OC markers. Inhibition of ER stress by a specific inhibitor or by knockdown of IRE1 blocked autophagy and induction of OC markers. ER stress inducers, tunicamycin and thapsigargin, induced expression of OC markers. Autophagy inhibition by 3'-methyladenine, LY294002, wortmannin or by knockdown of Beclin-1 or Atg 7 inhibited MCPIP-induced expression of OC markers. These results strongly suggest that MCP-1-induced differentiation of OC precursor cells is mediated via MCPIP-induced oxidative stress that causes ER stress leading to autophagy, revealing a novel mechanistic insight into the role of MCP-1 in OCs differentiation.
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Affiliation(s)
- Kangkai Wang
- Burnett School of Biomedical Sciences, College of Medicine, University of Central Florida, Orlando, FL 32816, USA
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Spooren A, Mestdagh P, Rondou P, Kolmus K, Haegeman G, Gerlo S. IL-1β potently stabilizes IL-6 mRNA in human astrocytes. Biochem Pharmacol 2011; 81:1004-15. [DOI: 10.1016/j.bcp.2011.01.019] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 01/25/2011] [Accepted: 01/27/2011] [Indexed: 10/18/2022]
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Cifuentes RA, Cruz-Tapias P, Rojas-Villarraga A, Anaya JM. ZC3H12A (MCPIP1): molecular characteristics and clinical implications. Clin Chim Acta 2010; 411:1862-8. [PMID: 20807520 DOI: 10.1016/j.cca.2010.08.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2010] [Revised: 08/22/2010] [Accepted: 08/24/2010] [Indexed: 12/15/2022]
Abstract
BACKGROUND ZC3H12A is a gene whose absence is related to autoimmune disorders and to other phenotypical alterations. METHODS A comprehensive review of the structure, molecular functions and regulation of ZC3H12A gene and its protein MCPIP1 is done in order to understand their clinical implications. RESULTS ZC3H12A, at 1p34.3, has 9860bp, six exons and 61 described SNPs. Eleven are non-synonymous thus leading to changes in MCPIP1, the protein encoded by ZC3H12A. MCPIP1 is induced by MCP-1 and IL-1 whose signals are transduced through the NF-kβ and MAPkinase pathways. This protein acts as an RNAse by degrading chemokine transcripts such as IL-1 as well as its own mRNA and as a transcription factor by reducing the expression of other chemokines induced by NF-kβ such as MCP-1. It also up-regulates genes involved in several differentiation processes and apoptosis. Therefore, ZC3H12A is an equilibrium gatekeeper that not only regulates its own inducers but also controls the regulation by degrading its own mRNA. CONCLUSION Understanding ZC3H12A gives a comprehensive panorama that promises to improve our understanding of processes in which this gene is involved including autoimmune, infectious and cardiovascular diseases.
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Affiliation(s)
- Ricardo A Cifuentes
- Center for Autoimmune Diseases Research (CREA), School of Medicine and Health Sciences, Universidad del Rosario, Bogota, Colombia
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Ahmed S, Gan HT, Lam CS, Poonepalli A, Ramasamy S, Tay Y, Tham M, Yu YH. Transcription factors and neural stem cell self-renewal, growth and differentiation. Cell Adh Migr 2009; 3:412-24. [PMID: 19535895 DOI: 10.4161/cam.3.4.8803] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The central nervous system (CNS) is a large network of interconnecting and intercommunicating cells that form functional circuits. Disease and injury of the CNS are prominent features of the healthcare landscape. There is an urgent unmet need to generate therapeutic solutions for CNS disease/injury. To increase our understanding of the CNS we need to generate cellular models that are experimentally tractable. Neural stem cells (NSCs), cells that generate the CNS during embryonic development, have been identified and propagated in vitro. To develop NSCs as a cellular model for the CNS we need to understand more about their genetics and cell biology. In particular, we need to define the mechanisms of self-renewal, proliferation and differentiation--i.e. NSC behavior. The analysis of pluripotency of embryonic stem cells through mapping regulatory networks of transcription factors has proven to be a powerful approach to understanding embryonic development. Here, we discuss the role of transcription factors in NSC behavior.
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Affiliation(s)
- Sohail Ahmed
- Institute of Medical Biology, Immunos, Singapore.
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