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Bataclan M, Leoni C, Moro SG, Pecoraro M, Wong EH, Heissmeyer V, Monticelli S. Crosstalk between Regnase-1 and -3 shapes mast cell survival and cytokine expression. Life Sci Alliance 2024; 7:e202402784. [PMID: 38830770 PMCID: PMC11147952 DOI: 10.26508/lsa.202402784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/17/2024] [Accepted: 05/22/2024] [Indexed: 06/05/2024] Open
Abstract
Post-transcriptional regulation of immune-related transcripts by RNA-binding proteins (RBPs) impacts immune cell responses, including mast cell functionality. Despite their importance in immune regulation, the functional role of most RBPs remains to be understood. By manipulating the expression of specific RBPs in murine mast cells, coupled with mass spectrometry and transcriptomic analyses, we found that the Regnase family of proteins acts as a potent regulator of mast cell physiology. Specifically, Regnase-1 is required to maintain basic cell proliferation and survival, whereas both Regnase-1 and -3 cooperatively regulate the expression of inflammatory transcripts upon activation, with Tnf being a primary target in both human and mouse cells. Furthermore, Regnase-3 directly interacts with Regnase-1 in mast cells and is necessary to restrain Regnase-1 expression through the destabilization of its transcript. Overall, our study identifies protein interactors of endogenously expressed Regnase factors, characterizes the regulatory interplay between Regnase family members in mast cells, and establishes their role in the control of mast cell homeostasis and inflammatory responses.
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Affiliation(s)
- Marian Bataclan
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Cristina Leoni
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Simone G Moro
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Matteo Pecoraro
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
| | - Elaine H Wong
- Institute for Immunology, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
| | - Vigo Heissmeyer
- Institute for Immunology, Biomedical Center, Faculty of Medicine, Ludwig-Maximilians-Universität in Munich, Planegg-Martinsried, Germany
- Research Unit Molecular Immune Regulation, Helmholtz Zentrum München, Munich, Germany
| | - Silvia Monticelli
- https://ror.org/05gfswd81 Institute for Research in Biomedicine, Università della Svizzera Italiana, Bellinzona, Switzerland
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Zhang M, Yang J, Yuan Y, Zhou Y, Wang Y, Cui R, Maliu Y, Xu F, Wu X. Recruitment or activation of mast cells in the liver aggravates the accumulation of fibrosis in carbon tetrachloride-induced liver injury. Mol Immunol 2024; 170:60-75. [PMID: 38626622 DOI: 10.1016/j.molimm.2024.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/31/2024] [Accepted: 04/09/2024] [Indexed: 04/18/2024]
Abstract
Liver diseases caused by viral infections, alcoholism, drugs, or chemical poisons are a significant health problem: Liver diseases are a leading contributor to mortality, with approximately 2 million deaths per year worldwide. Liver fibrosis, as a common liver disease characterized by excessive collagen deposition, is associated with high morbidity and mortality, and there is no effective treatment. Numerous studies have shown that the accumulation of mast cells (MCs) in the liver is closely associated with liver injury caused by a variety of factors. This study investigated the relationship between MCs and carbon tetrachloride (CCl4)-induced liver fibrosis in rats and the effects of the MC stabilizers sodium cromoglycate (SGC) and ketotifen (KET) on CCl4-induced liver fibrosis. The results showed that MCs were recruited or activated during CCl4-induced liver fibrosis. Coadministration of SCG or KET alleviated the liver fibrosis by decreasing SCF/c-kit expression, inhibiting the TGF-β1/Smad2/3 pathway, depressing the HIF-1a/VEGF pathway, activating Nrf2/HO-1 pathway, and increasing the hepatic levels of GSH, GSH-Px, and GR, thereby reducing hepatic oxidative stress. Collectively, recruitment or activation of MCs is linked to liver fibrosis and the stabilization of MCs may provide a new approach to the prevention of liver fibrosis.
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Affiliation(s)
- Mingkang Zhang
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; School of Pharmacy, Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Jinru Yang
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; School of Pharmacy, Lanzhou University, Lanzhou 730000, China
| | - Yufan Yuan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Yan Zhou
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Yazhi Wang
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Ruirui Cui
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; School of Pharmacy, Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Yimai Maliu
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Fen Xu
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China
| | - Xin'an Wu
- Department of Pharmacy, The First Hospital of Lanzhou University, Lanzhou 730000, China; School of Pharmacy, Lanzhou University, Lanzhou 730000, China; Engineering Research Centre of Prevention and Control for Clinical Medication Risk, Gansu Province, China.
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Zhou J, Pathak JL, Cao T, Chen B, Wei W, Hu S, Mao T, Wu X, Watanabe N, Li X, Li J. CD4 T cell-secreted IFN-γ in Sjögren's syndrome induces salivary gland epithelial cell ferroptosis. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167121. [PMID: 38471652 DOI: 10.1016/j.bbadis.2024.167121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 03/05/2024] [Accepted: 03/06/2024] [Indexed: 03/14/2024]
Abstract
BACKGROUND Sjögren's syndrome (SS) is a chronic autoimmune disease that predominantly affects exocrine glands. Previous studies have demonstrated that upregulated interferon-gamma (IFN-γ) in SS triggers ferroptosis in salivary gland epithelial cells (SGECs), resulting in impaired salivary gland secretion. However, the immune cells responsible for secreting IFN-γ remain unclear. Therefore, this study conducted bioinformatics analysis and molecular validation to identify the origin of IFN-γ in SS salivary gland. METHODS The 'limma' package in R software was utilized to identify differentially expressed genes (DEGs) in the human SS dataset. Subsequently, the identified DEGs were compared with the ferroptosis database and screened through Cytoscape to determine candidate genes. The cellular localization and expression patterns of candidate genes were further confirmed in the salivary gland single-cell RNA sequence (scRNA-seq) data set from healthy control and SS mice. Furthermore, in vitro and in vivo studies were performed to analyze the effect of CD4 T-secreted IFN-γ on SGECs' ferroptosis and functions. RESULTS Upregulated TLR4, IFNG, and IL33 were screened as candidates ferroptosis ferroptosis-inducing genes in SS salivary glands. The association of IFNG and IL33 with CD4 T cells was established through immune infiltration analysis. The expression of IFN-γ on CD4 T cells was robustly higher compared with that of IL33 as evidenced by scRNA-seq and immunofluorescence co-localization. Subsequent experiments conducted on candidate genes consistently demonstrated the potent ability of IFN-γ to induce SGECs' ferroptosis and inhibit AQP5 expression. CONCLUSIONS Our findings indicate that CD4 T cell-secreted IFN-γ in SS induces SGECs' ferroptosis and inhibits AQP5 expression.
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Affiliation(s)
- Jiannan Zhou
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Janak L Pathak
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Tingting Cao
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Bo Chen
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Wei Wei
- Hospital of Stomatology, Jilin University, Changchun 130021, China
| | - Shilin Hu
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Tianjiao Mao
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Xiaodan Wu
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China
| | - Nobumoto Watanabe
- Chemical Resource Development Research Unit, RIKEN CSRS, Wako, Saitama, 351-0198, Japan
| | - Xiaomeng Li
- KingMed School of Laboratory Medicine, Guangzhou Medical University, Guangzhou, Guangdong 510182, China.
| | - Jiang Li
- School and Hospital of Stomatology, Guangdong Engineering Research Center of Oral Restoration and Reconstruction & Guangzhou Key Laboratory of Basic and Applied Research of Oral Regenerative Medicine, Guangzhou Medical University, Guangzhou 510182, China.
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Bal G, Schneikert J, Li Z, Franke K, Tripathi SR, Zuberbier T, Babina M. CREB Is Indispensable to KIT Function in Human Skin Mast Cells-A Positive Feedback Loop between CREB and KIT Orchestrates Skin Mast Cell Fate. Cells 2023; 13:42. [PMID: 38201246 PMCID: PMC10778115 DOI: 10.3390/cells13010042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 12/18/2023] [Accepted: 12/22/2023] [Indexed: 01/12/2024] Open
Abstract
Skin mast cells (MCs) are critical effector cells in acute allergic reactions, and they contribute to chronic dermatoses like urticaria and atopic and contact dermatitis. KIT represents the cells' crucial receptor tyrosine kinase, which orchestrates proliferation, survival, and functional programs throughout the lifespan. cAMP response element binding protein (CREB), an evolutionarily well-conserved transcription factor (TF), regulates multiple cellular programs, but its function in MCs is poorly understood. We recently reported that CREB is an effector of the SCF (Stem Cell Factor)/KIT axis. Here, we ask whether CREB may also act upstream of KIT to orchestrate its functioning. Primary human MCs were isolated from skin and cultured in SCF+IL-4 (Interleukin-4). Pharmacological inhibition (666-15) and RNA interference served to manipulate CREB function. We studied KIT expression using flow cytometry and RT-qPCR, KIT-mediated signaling using immunoblotting, and cell survival using scatterplot and caspase-3 activity. The proliferation and cycle phases were quantified following BrdU incorporation. Transient CREB perturbation resulted in reduced KIT expression. Conversely, microphthalmia transcription factor (MITF) was unnecessary for KIT maintenance. KIT attenuation secondary to CREB was associated with heavily impaired KIT functional outputs, like anti-apoptosis and cell cycle progression. Likewise, KIT-elicited phosphorylation of ERK1/2 (Extracellular Signal-Regulated Kinase 1/2), AKT, and STAT5 (Signal Transducer and Activator of Transcription) was substantially diminished upon CREB inhibition. Surprisingly, the longer-term interference of CREB led to complete cell elimination, in a way surpassing KIT inhibition. Collectively, we reveal CREB as non-redundant in MCs, with its absence being incompatible with skin MCs' existence. Since SCF/KIT regulates CREB activity and, vice versa, CREB is required for KIT function, a positive feedforward loop between these elements dictates skin MCs' fate.
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Affiliation(s)
- Gürkan Bal
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Jean Schneikert
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Zhuoran Li
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Kristin Franke
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Shiva Raj Tripathi
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Torsten Zuberbier
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
| | - Magda Babina
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Immunology and Allergology IA, 12203 Berlin, Germany; (G.B.); (J.S.); (Z.L.); (K.F.); (S.R.T.); (T.Z.)
- Institute of Allergology, Charité–Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt Universität zu Berlin, Hindenburgdamm 30, 12203 Berlin, Germany
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