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Pinheiro DML, de Oliveira AHS, Coutinho LG, Fontes FL, de Medeiros Oliveira RK, Oliveira TT, Faustino ALF, Lira da Silva V, de Melo Campos JTA, Lajus TBP, de Souza SJ, Agnez-Lima LF. Resveratrol decreases the expression of genes involved in inflammation through transcriptional regulation. Free Radic Biol Med 2019; 130:8-22. [PMID: 30366059 DOI: 10.1016/j.freeradbiomed.2018.10.432] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 10/18/2018] [Accepted: 10/18/2018] [Indexed: 02/06/2023]
Abstract
Oxidative stress generated during inflammation is associated with a wide range of pathologies. Resveratrol (RESV) displays anti-inflammatory and antioxidant activities, being a candidate for the development of adjuvant therapies for several inflammatory diseases. Despite this potential, the cellular responses induced by RESV are not well known. In this work, transcriptomic analysis was performed following lipopolysaccharide (LPS) stimulation of monocyte cultures in the presence of RESV. Induction of an inflammatory response was observed after LPS treatment and the addition of RESV led to decreases in expression of the inflammatory mediators, tumor necrosis factor-alpha (TNF-α), interleukin-8 (IL-8), and monocyte chemoattractant protein-1 (MCP-1), without cytotoxicity. RNA sequencing revealed 823 upregulated and 2098 downregulated genes (cutoff ≥2.0 or ≤-2.0) after RESV treatment. Gene ontology analysis showed that the upregulated genes were associated with metabolic processes and the cell cycle, consistent with normal cell growth and differentiation under an inflammatory stimulus. The downregulated genes were associated with inflammatory responses, gene expression, and protein modification. The prediction of master regulators using the iRegulon tool showed nuclear respiratory factor 1 (NRF1) and GA-binding protein alpha subunit (GABPA) as the main regulators of the downregulated genes. Using immunoprecipitation and protein expression assays, we observed that RESV was able to decrease protein acetylation patterns, such as acetylated apurinic/apyrimidinic endonuclease-1/reduction-oxidation factor 1 (APE1/Ref-1), and increase histone methylation. In addition, reductions in p65 (nuclear factor-kappa B (NF-κB) subunit) and lysine-specific histone demethylase-1 (LSD1) expression were observed. In conclusion, our data indicate that treatment with RESV caused significant changes in protein acetylation and methylation patterns, suggesting the induction of deacetylase and reduction of demethylase activities that mainly affect regulatory cascades mediated by NF-кB and Janus kinase/signal transducers and activators of transcription (JAK/STAT) signaling. NRF1 and GABPA seem to be the main regulators of the transcriptional profile observed after RESV treatment.
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Affiliation(s)
| | - Ana Helena Sales de Oliveira
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil; Chemistry Department, New York University, New York, NY, United States
| | - Leonam Gomes Coutinho
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil; Instituto Federal de Educação Tecnológica do Rio Grande do Norte, IFRN, São Paulo do Potengi, Brazil
| | - Fabrícia Lima Fontes
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil
| | | | - Thais Teixeira Oliveira
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil
| | - André Luís Fonseca Faustino
- Instituto do Cérebro, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Bioinformatics Multidisciplinary Environment (BioME), IMD, UFRN, Brazil
| | - Vandeclécio Lira da Silva
- Instituto do Cérebro, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Bioinformatics Multidisciplinary Environment (BioME), IMD, UFRN, Brazil
| | | | - Tirzah Braz Petta Lajus
- Departamento de Biologia Celular e Genética, Universidade Federal do Rio Grande do Norte, UFRN, Natal, Brazil
| | - Sandro José de Souza
- Instituto do Cérebro, Universidade Federal do Rio Grande do Norte, Natal, RN, Brazil; Bioinformatics Multidisciplinary Environment (BioME), IMD, UFRN, Brazil
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Xu YJ, Chen FP, Chen Y, Fu B, Liu EY, Zou L, Liu LX. A Possible Reason to Induce Acute Graft-vs.-Host Disease After Hematopoietic Stem Cell Transplantation: Lack of Sirtuin-1 in CD4 + T Cells. Front Immunol 2018; 9:3078. [PMID: 30622543 PMCID: PMC6308326 DOI: 10.3389/fimmu.2018.03078] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 12/12/2018] [Indexed: 01/02/2023] Open
Abstract
Sirtuin 1 (SIRT1) is a critical suppressor of T cell immunity. However, whether SIRT1 is involved in the progression of acute graft-vs.-host disease (aGVHD) has still remained unclear. PI3K/Akt/mTOR pathway is a crucial element involved in the activation and functions of T cells. Over-activation of PI3K/Akt/mTOR signaling may be related to the occurrence of aGVHD. STAT3 activation requires phosphorylation and acetylation. A recent study showed that STAT3 hyperphosphorylation in CD4+ T cells may be a trigger of aGVHD. The role of the STAT3 acetylation in aGVHD pathogenesis is still unclear. The present study revealed that SIRT1 deficiency as a critical factor is involved in the excessive activation of mTOR pathway and upregulation of STAT3 acetylation and phosphorylation in CD4+ T cells from patients with aGVHD. Exorbitant activation of IL-1β signaling is the main reason for TAK1-dependent SIRT1 insufficiency. The findings of the present study might provide a new therapeutic target for treating aGVHD.
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Affiliation(s)
- Ya-Jing Xu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Fang-Ping Chen
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Yan Chen
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Bin Fu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - En-Yi Liu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Lang Zou
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
| | - Lin-Xin Liu
- Department of Hematology, Xiangya Hospital, Central South University, Changsha, China
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Morelli M, Scarponi C, Mercurio L, Facchiano F, Pallotta S, Madonna S, Girolomoni G, Albanesi C. Selective Immunomodulation of Inflammatory Pathways in Keratinocytes by the Janus Kinase (JAK) Inhibitor Tofacitinib: Implications for the Employment of JAK-Targeting Drugs in Psoriasis. J Immunol Res 2018; 2018:7897263. [PMID: 30581877 PMCID: PMC6276416 DOI: 10.1155/2018/7897263] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Revised: 08/30/2018] [Accepted: 09/17/2018] [Indexed: 02/08/2023] Open
Abstract
IFN-γ and IL-22 are deeply involved in the pathogenesis of psoriasis, as they boost the expression of inflammatory genes and alter proliferative and differentiative programs in keratinocytes. The JAK1/JAK2/STAT1 and JAK1/TYK2/STAT3 pathways triggered by IFN-γ and IL-22, respectively, are aberrantly activated in psoriasis, as highlighted by the peculiar STAT1 and STAT3 signatures in psoriatic skin lesions. To limit the detrimental consequences of IFN-γ and IL-22 excessive stimulation, psoriatic keratinocytes activate suppressor of cytokine signaling (SOCS)1 and SOCS3, which in turn dampen molecular signaling by inhibiting JAK1 and JAK2. Thus, JAK targeting appears to be a reasonable strategy to treat psoriasis. Tofacitinib is an inhibitor of JAK proteins, which, similarly to SOCS, impedes JAK phosphorylation. In this study, we evaluated the immunomodulatory effects of tofacitinib on epidermal keratinocytes in in vitro and in vivo models of psoriasis. We demonstrated the selectivity of tofacitinib inhibitory action on IFN-γ and IL-22, but not on TNF-γ or IL-17 proinflammatory signaling, with suppressed expression of IFN-γ-dependent inflammatory genes, and restoration of normal proliferative and differentiative programs altered by IL-22 in psoriatic keratinocyte cultures. Tofacitinib also potently reduced the psoriasiform phenotype in the imiquimod-induced murine model of psoriasis. Finally, we found that tofacitinib mimics SOCS1 or SOCS3 activities, as it impaired the same molecular pathways in IFN-γ or IL-22-activated keratinocytes.
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Affiliation(s)
- Martina Morelli
- Section of Dermatology, Department of Medicine, University of Verona, Verona 37126, Italy
| | - Claudia Scarponi
- Laboratory of Experimental Immunology and V Division of Dermatology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome 00167, Italy
| | - Laura Mercurio
- Laboratory of Experimental Immunology and V Division of Dermatology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome 00167, Italy
| | - Francesco Facchiano
- Department of Oncology and Molecular Medicine, Istituto Superiore di Sanità (ISS), Rome 00161, Italy
| | - Sabatino Pallotta
- Laboratory of Experimental Immunology and V Division of Dermatology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome 00167, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology and V Division of Dermatology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome 00167, Italy
| | - Giampiero Girolomoni
- Section of Dermatology, Department of Medicine, University of Verona, Verona 37126, Italy
| | - Cristina Albanesi
- Laboratory of Experimental Immunology and V Division of Dermatology, Istituto Dermopatico dell'Immacolata, IDI-IRCCS, Rome 00167, Italy
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Mercurio L, Morelli M, Scarponi C, Eisenmesser EZ, Doti N, Pagnanelli G, Gubinelli E, Mazzanti C, Cavani A, Ruvo M, Dinarello CA, Albanesi C, Madonna S. IL-38 has an anti-inflammatory action in psoriasis and its expression correlates with disease severity and therapeutic response to anti-IL-17A treatment. Cell Death Dis 2018; 9:1104. [PMID: 30377293 PMCID: PMC6207563 DOI: 10.1038/s41419-018-1143-3] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Revised: 09/10/2018] [Accepted: 10/08/2018] [Indexed: 12/29/2022]
Abstract
IL-36 cytokines, a subgroup of IL-1 family, comprise IL-36α, IL-36β, and IL-36γ agonists, abundantly expressed in psoriatic skin, and IL-36RA and IL-38 antagonists. In psoriatic skin, IL-36 cytokines interfere with keratinocyte cornification programs and induce the release of antimicrobial peptides and chemokines active on neutrophils and Th17 lymphocytes. To date, the role of IL-38 antagonist in psoriasis remains to be defined. Here, we demonstrate that skin and circulating IL-38 levels are reduced in psoriatic patients and in other skin diseases characterized by neutrophilic infiltrate. In psoriasis, the balance of IL-36γ agonist/IL-38 antagonist serum levels is in favor of agonists and is closely associated with disease severity. Interestingly, IL-38 is upregulated by anti-IL-17A biological treatment and positively correlates with the therapeutic efficacy of secukinumab in psoriatic patients. The downregulation of IL-38 expression is strictly related to keratinocyte de-differentiation triggered by the inflammatory cytokines IL-36γ, IL-17, and IL-22. Finally, we demonstrate that administration of recombinant full-length IL-38 counteracts in vitro the biological processes induced by IL-36γ in human keratinocytes and endothelial cells and attenuates in vivo the severity of the psoriasiform phenotype induced by IMQ in mice. Such effects are achieved by restoring the physiological programs of keratinocyte proliferation and differentiation, and reducing the immune cell infiltrates.
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Affiliation(s)
- Laura Mercurio
- Laboratory of Experimental Immunology and Integrated Research Center for PSOriasis (CRI-PSO), Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, ROME, Italy
| | - Martina Morelli
- Laboratory of Experimental Immunology and Integrated Research Center for PSOriasis (CRI-PSO), Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, ROME, Italy
- Section of Dermatology, Department of Medicine, University of Verona, P.zza Stefani, 1, Verona, 37126, Italy
| | - Claudia Scarponi
- Laboratory of Experimental Immunology and Integrated Research Center for PSOriasis (CRI-PSO), Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, ROME, Italy
| | - Elan Z Eisenmesser
- Department of Biochemistry & Molecular Genetics, School of Medicine, University of Colorado Denver, Anschutz Campus, Aurora, 80045, CO, USA
| | - Nunzianna Doti
- Istituto di Biostrutture e Bioimmagini-CNR and CIRPEB, Via Mezzocannone, 16, Naples, 80134, Italy
| | - Gianluca Pagnanelli
- 1st Division of Dermatology and CRI-PSO, Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, Rome, 00167, Italy
| | - Emanuela Gubinelli
- CRI-PSO Istituto Dermopatico dell'Immacolata, IDI-IRCCS, via Monti di Creta, 104, Rome, 00167, Italy
| | - Cinzia Mazzanti
- 1st Division of Dermatology and CRI-PSO, Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, Rome, 00167, Italy
| | - Andrea Cavani
- INMP/NIHMP, via di S.Gallicano, 25, Rome, 00153, Italy
| | - Menotti Ruvo
- Istituto di Biostrutture e Bioimmagini-CNR and CIRPEB, Via Mezzocannone, 16, Naples, 80134, Italy
| | - Charles A Dinarello
- Department of Medicine, Radboud University Medical Center, 6525 HP, Nijmegen, The Netherlands
- Department of Medicine, School of Medicine, University of Colorado, Denver, Anschutz Campus, Aurora, CO, USA
| | - Cristina Albanesi
- Laboratory of Experimental Immunology and Integrated Research Center for PSOriasis (CRI-PSO), Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, ROME, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology and Integrated Research Center for PSOriasis (CRI-PSO), Istituto Dermopatico dell'Immacolata IDI-IRCCS, via Monti di Creta, 104, ROME, Italy.
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Xu J, Li Y, Lou M, Xia W, Liu Q, Xie G, Liu L, Liu B, Yang J, Qin M. Baicalin regulates SirT1/STAT3 pathway and restrains excessive hepatic glucose production. Pharmacol Res 2018; 136:62-73. [DOI: 10.1016/j.phrs.2018.08.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 07/20/2018] [Accepted: 08/20/2018] [Indexed: 12/20/2022]
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Albanesi C, Madonna S, Gisondi P, Girolomoni G. The Interplay Between Keratinocytes and Immune Cells in the Pathogenesis of Psoriasis. Front Immunol 2018; 9:1549. [PMID: 30034395 PMCID: PMC6043636 DOI: 10.3389/fimmu.2018.01549] [Citation(s) in RCA: 264] [Impact Index Per Article: 44.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 06/22/2018] [Indexed: 01/17/2023] Open
Abstract
Psoriasis is a chronic inflammatory skin disease resulting from genetic, epigenetic, environmental, and lifestyle factors. To date, several immunopathogenic mechanisms of psoriasis have been elucidated, and, in the current model, the cross talk between autoreactive T cells and resident keratinocytes generates inflammatory and immune circuits responsible for the initiation, progression, and persistence of the disease. Several autoantigens derived from keratinocytes (i.e., LL37 cathelecidin/nucleic acid complexes, newly generated lipid antigens) have been identified, which may trigger initial activation of T cells, particularly IL-17-producing T cells, T helper (Th)1 and Th22 cells. Hence, lymphokines released in skin lesions are pivotal for keratinocyte activation and production of inflammatory molecules, which in turn lead to amplification of the local immune responses. Intrinsic genetic alterations of keratinocytes in the activation of signal transduction pathways dependent on T-cell-derived cytokines are also fundamental. The current review emphasizes the aberrant interplay of immune cells and skin-resident keratinocytes in establishing and sustaining inflammatory and immune responses in psoriasis.
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Affiliation(s)
- Cristina Albanesi
- Laboratory of Experimental Immunology, Istituto Dermopatico dell'Immacolata (IDI), IRCCS, Rome, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology, Istituto Dermopatico dell'Immacolata (IDI), IRCCS, Rome, Italy
| | - Paolo Gisondi
- Section of Dermatology, Department of Medicine, University of Verona, Verona, Italy
| | - Giampiero Girolomoni
- Section of Dermatology, Department of Medicine, University of Verona, Verona, Italy
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Granulocyte-macrophage colony-stimulating factor negatively regulates early IL-10-mediated responses. Future Sci OA 2018; 4:FSO288. [PMID: 29682323 PMCID: PMC5905582 DOI: 10.4155/fsoa-2017-0133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/09/2018] [Indexed: 01/10/2023] Open
Abstract
Aim: Treatment of inflammatory disorders relies on the intervention in immune responses thereby restoring homeostasis. IL-10 is a cytokine with therapeutic potential, but until now has not been as successful as previously anticipated. A reason for this may be that IL-10 responsiveness depends on the environment of the inflamed tissue. In this study we investigated whether GM-CSF is able to influence IL-10-mediated responses. Methodology: Dendritic cells and macrophages were differentiated from mouse bone marrow and treated or depleted from GM-CSF prior to analyze their response to IL-10. Activity was assessed by measuring cytokine expression upon lipopolysaccharide stimulation, IL-10-induced signaling and down-stream gene expression. Conclusion: This study describes that GM-CSF negatively regulates IL-10-mediated responses. Over the last couple of decades inflammatory disorders, like autoimmune disease and allergies, are becoming more prevalent in the western world. These inflammatory disorders are characterized by uncontrolled immune responses against harmless antigens or commensal bacteria. Treatment of these diseases relies on the intervention in inflammatory responses and thereby restoring the balance of the immune system. One approach used in the clinic to balance the immune system is by treating patients with molecules used by our own immune system to suppress inflammation, such as IL-10. However, treatment with IL-10 has not been as successful as previously anticipated. In this study we show that a particular signaling molecule of the immune system that contributes to inflammation negatively affects the response of immune cells toward IL-10 and thereby could contribute to the low efficacy of IL-10 treatment.
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Masalha M, Sidi Y, Avni D. The contribution of feedback loops between miRNAs, cytokines and growth factors to the pathogenesis of psoriasis. Exp Dermatol 2018; 27:603-610. [DOI: 10.1111/exd.13520] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/16/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Moamen Masalha
- Laboratory of Molecular Cell Biology; Center for Cancer Research and Department of Medicine C; Sheba Medical Center; Tel Hashomer Israel
- Faculty of Medicine; Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Yechezkel Sidi
- Laboratory of Molecular Cell Biology; Center for Cancer Research and Department of Medicine C; Sheba Medical Center; Tel Hashomer Israel
- Faculty of Medicine; Sackler School of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Dror Avni
- Laboratory of Molecular Cell Biology; Center for Cancer Research and Department of Medicine C; Sheba Medical Center; Tel Hashomer Israel
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Calautti E, Avalle L, Poli V. Psoriasis: A STAT3-Centric View. Int J Mol Sci 2018; 19:ijms19010171. [PMID: 29316631 PMCID: PMC5796120 DOI: 10.3390/ijms19010171] [Citation(s) in RCA: 127] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 12/22/2017] [Accepted: 01/04/2018] [Indexed: 12/24/2022] Open
Abstract
Signal Transducer and Activator of Transcription (STAT)3 has recently emerged as a key player in the development and pathogenesis of psoriasis and psoriatic-like inflammatory conditions. Indeed, STAT3 hyperactivation has been reported in virtually every cell type involved in disease initiation and maintenance, and this factor mediates the signal of most cytokines that are involved in disease pathogenesis, including the central Interleukin (IL)-23/IL-17/IL-22 axis. Despite the recent availability of effective biological agents (monoclonal antibodies) against IL-17 and IL-23, which have radically changed the current standard of disease management, the possibility of targeting either STAT3 itself or, even better, the family of upstream activators Janus kinases (JAK1, 2, 3, and TYK2) offers additional therapeutic options. Due to the oral/topical administration modality of these small molecule drugs, their lower cost, and the reduced risk of eliciting adverse immune responses, these compounds are being actively scrutinized in clinical settings. Here, we summarize the main pathological features of psoriatic conditions that provide the rationale for targeting the JAK/STAT3 axis in disease treatment.
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Affiliation(s)
- Enzo Calautti
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Lidia Avalle
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
| | - Valeria Poli
- Department of Molecular Biotechnology and Health Sciences, University of Torino, 10126 Torino, Italy.
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Zhong Y, Lee K, He JC. SIRT1 Is a Potential Drug Target for Treatment of Diabetic Kidney Disease. Front Endocrinol (Lausanne) 2018; 9:624. [PMID: 30386303 PMCID: PMC6199382 DOI: 10.3389/fendo.2018.00624] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 10/01/2018] [Indexed: 11/13/2022] Open
Abstract
Multiple studies have demonstrated a critical role of Sirtuin-1 (SIRT1) deacetylase in protecting kidney cells from cellular stresses. A protective role of SIRT1 has been reported in both podocytes and renal tubular cells in multiple kidney disease settings, including diabetic kidney disease (DKD). We and others have shown that SIRT1 exerts renoprotective effects in DKD in part through the deacetylation of transcription factors involved in the disease pathogenesis, such as p53, FOXO, RelA/p65NF-κB, STAT3, and PGC1α/PPARγ. Recently we showed that the podocyte-specific overexpression of SIRT1 attenuated proteinuria and kidney injury in an experimental model of DKD, further confirming SIRT1 as a potential target to treat kidney disease. Known agonists of SIRT1 such as resveratrol diminished diabetic kidney injury in several animal models. Similarly, we also showed that puerarin, a Chinese herbal medicine compound, activates SIRT1 to provide renoprotection in mouse models of DKD. However, as these are non-specific SIRT1 agonists, we recently developed a more specific and potent SIRT1 agonist (BF175) that significantly attenuated diabetic kidney injury in type 1 diabetic OVE26 mice. We also previously reported that MS417, a bromodomain inhibitor that disrupts the interaction between the acetyl-residues of NF-κB and bromodomain-containing protein 4 (BRD4) also attenuates DKD. These results suggest that SIRT1 agonists and bromodomain inhibitors could be potential new therapuetic treatments against DKD progression.
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Affiliation(s)
- Yifei Zhong
- Division of Nephrology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
- *Correspondence: Yifei Zhong
| | - Kyung Lee
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
| | - John Cijiang He
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY, United States
- Renal Section, James J. Peters VA Medical Center, Bronx, NY, United States
- John Cijiang He
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STAT3 Suppression Is Involved in the Protective Effect of SIRT6 Against Cardiomyocyte Hypertrophy. J Cardiovasc Pharmacol 2017; 68:204-14. [PMID: 27124607 DOI: 10.1097/fjc.0000000000000404] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The activation of signal transducer and activator of transcription 3 (STAT3) is critical for the development of cardiac hypertrophy and heart failure. Sirtuin 6 (SIRT6) protects cardiomyocytes from hypertrophy. This study focused on the association between SIRT6 and STAT3 in the regulation of cardiomyocyte hypertrophy. In the phenylephrine (PE)-induced hypertrophic cardiomyocyte model and in the hearts of isoprenaline-induced cardiac hypertrophic rat model, the mRNA and protein expressions of STAT3 and its phosphorylated level at tyrosine 705 (P-STAT3) were significantly increased. By contrast, the deacetylation activity of SIRT6 was weakened without altering its protein expression. In addition, the nuclear localization of STAT3 and P-STAT3 was enhanced by PE, suggesting that STAT3 was activated in cardiomyocyte hypertrophy. Adenovirus infection-induced SIRT6 overexpression repressed the activation of STAT3 by decreasing its mRNA and protein levels, by suppressing its transcriptional activity, and by hindering the expressions of its target genes. Moreover, the effect of SIRT6 overexpression on eliminating PE-induced expressions of hypertrophic biomarkers, such as atrial natriuretic factor and brain natriuretic peptide, was reversed by STAT3 overexpression. Likewise, SIRT6 knockdown-induced upregulation of atrial natriuretic factor and brain natriuretic peptide was reversed by STAT3 silencing. These observations suggest that the antihypertrophic effect of SIRT6 involves STAT3 suppression. In conclusion, SIRT6 prevents PE-induced activation of STAT3 in cardiomyocyte hypertrophy; the inhibitory effect of SIRT6 on STAT3 contributes to cardiac protection.
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La Manna S, Scognamiglio PL, Di Natale C, Leone M, Mercurio FA, Malfitano AM, Cianfarani F, Madonna S, Caravella S, Albanesi C, Novellino E, Marasco D. Characterization of linear mimetic peptides of Interleukin-22 from dissection of protein interfaces. Biochimie 2017; 138:106-115. [PMID: 28479106 DOI: 10.1016/j.biochi.2017.05.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/02/2017] [Indexed: 12/12/2022]
Abstract
Interleukin-22 (IL-22) belongs to the family of IL-10 cytokines and is involved in a wide number of human diseases, including inflammatory disorders and cancer pathology. The ligand-receptor complex IL-22/IL-22R plays a key role in several pathways especially in the regulation and resolution of immune responses. The identification of novel compounds able to modulate IL-22/IL-22R complex could open the route to new therapeutic strategies in multiple human diseases. In this study, we designed and characterized IL-22 derived peptides at protein interface regions: several sequences revealed able to interfere with the protein complex with IC50 in the micromolar range as evaluated through Surface Plasmon Resonance (SPR) experiments. Their conformational characterization was carried out through Circular Dichroism (CD) and Nuclear Magnetic Resonance (NMR) spectroscopies, shedding new light into the features of IL-22 fragments and on structural determinants of IL-22/IL-22R1 recognition. Finally, several peptides were tested on human keratinocyte cultures for evaluating their ability to mimic the activation of molecular pathways downstream to IL-22R in response to IL-22 binding.
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Affiliation(s)
- Sara La Manna
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Pasqualina Liana Scognamiglio
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Concetta Di Natale
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Marilisa Leone
- Institute of Biostructures and Bioimaging, CNR, 80134, Naples, Italy
| | | | - Anna Maria Malfitano
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Francesca Cianfarani
- Laboratory of Cellular and Molecular Biology, Fondazione "Luigi Maria Monti", Istituto Dermopatico dell'Immacolata (IDI), IRCCS, Via Monti di Creta, 104, 00167, Rome, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology, Fondazione "Luigi Maria Monti", Istituto Dermopatico dell'Immacolata (IDI), IRCCS, Via Monti di Creta, 104, 00167, Rome, Italy
| | - Sergio Caravella
- Laboratory of Experimental Immunology, Fondazione "Luigi Maria Monti", Istituto Dermopatico dell'Immacolata (IDI), IRCCS, Via Monti di Creta, 104, 00167, Rome, Italy
| | - Cristina Albanesi
- Laboratory of Experimental Immunology, Fondazione "Luigi Maria Monti", Istituto Dermopatico dell'Immacolata (IDI), IRCCS, Via Monti di Creta, 104, 00167, Rome, Italy
| | - Ettore Novellino
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy
| | - Daniela Marasco
- Department of Pharmacy, CIRPEB: Centro Interuniversitario di Ricerca sui Peptidi Bioattivi, University of Naples "Federico II", 80134, Naples, Italy.
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Cocchiola R, Romaniello D, Grillo C, Altieri F, Liberti M, Magliocca FM, Chichiarelli S, Marrocco I, Borgoni G, Perugia G, Eufemi M. Analysis of STAT3 post-translational modifications (PTMs) in human prostate cancer with different Gleason Score. Oncotarget 2017; 8:42560-42570. [PMID: 28489571 PMCID: PMC5522088 DOI: 10.18632/oncotarget.17245] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 04/05/2017] [Indexed: 01/09/2023] Open
Abstract
Prostate Cancer (PCa) is a complex and heterogeneous disease. The androgen receptor (AR) and the signal transducer and activator of transcription 3 (STAT3) could be effective targets for PCa therapy. STAT3, a cytoplasmatic latent transcription factor, is a hub protein for several oncogenic signalling pathways and up-regulates the expression of numerous genes involved in tumor cell proliferation, angiogenesis, metastasis and cell survival. STAT3 activity can be modulated by several Post-Translational Modifications (PTMs) which reflect particular cell conditions and may be implicated in PCa development and progression. The aim of this work was to analyze STAT3 PTMs at different tumor stages and their relationship with STAT3 cellular functions. For this purpose, sixty-five prostatectomy, Formalin-fixed paraffin-embedded (FFPE) specimens, classified with different Gleason Scores, were subjected to immunoblotting, immunofluorescence staining and RT-PCR analysis. All experiments were carried out in matched non-neoplastic and neoplastic tissues. Data obtained showed different STAT3 PTMs profiles among the analyzed tumor grades which correlate with differences in the amount and distribution of specific STAT3 interactors as well as the expression of STAT3 target genes. These results highlight the importance of PTMs as an additional biomarker for the exactly evaluation of the PCa stage and the optimal treatment of this disease.
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Affiliation(s)
- Rossana Cocchiola
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
- Fondazione Enrico ed Enrica Sovena, Rome, Italy
| | - Donatella Romaniello
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
| | - Caterina Grillo
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
| | - Fabio Altieri
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
| | - Marcello Liberti
- Department of Gynecological-Obstretic Science and Urologic Sciences, Sapienza University of Rome, Rome, Italy
| | - Fabio Massimo Magliocca
- Department of Radiological, Oncological and Pathological Sciences, Sapienza University of Rome, Rome, Italy
| | - Silvia Chichiarelli
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
| | - Ilaria Marrocco
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
| | - Giuseppe Borgoni
- Department of Gynecological-Obstretic Science and Urologic Sciences, Sapienza University of Rome, Rome, Italy
| | - Giacomo Perugia
- Department of Gynecological-Obstretic Science and Urologic Sciences, Sapienza University of Rome, Rome, Italy
| | - Margherita Eufemi
- Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
- Istituto Pasteur, Fondazione Cenci Bolognetti, Piazzale Aldo Moro 5, Rome, Italy
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65
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Wu Z, Hu Z, Cai X, Ren W, Dai F, Liu H, Chang J, Li B. Interleukin 22 attenuated angiotensin II induced acute lung injury through inhibiting the apoptosis of pulmonary microvascular endothelial cells. Sci Rep 2017; 7:2210. [PMID: 28526849 PMCID: PMC5438354 DOI: 10.1038/s41598-017-02056-w] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Accepted: 04/06/2017] [Indexed: 01/30/2023] Open
Abstract
Apoptosis of pulmonary microvascular endothelial cells (PMVECs) was considered to be closely related to the pathogenesis of acute lung injury (ALI). We aim to investigate whether IL-22 plays protective roles in lung injury through inhibiting the apoptosis of PMVECs. ALI model was induced through subcutaneous infusion of angiotensin II (Ang II). Lung injury and infiltration of inflammatory cells were evaluated by determining the PaO2/FiO2, calculation of dry to weight ratio in lung, and immunohistochemisty analysis. Apoptosis of PMVECs was determined using TUNEL assay and flow cytometry, respectively. Immunofluorescence and Western blot analysis were used to determine the expression and localization of STAT3, as well as the nucleus transmission of STAT3 from cytoplasm after IL22 treatment. Pathological findings showed ALI was induced 1 week after AngII infusion. IL22 inhibited the AngII-induced ALI, attenuated the edema in lung and the infiltration of inflammatory cells. Also, it contributed to the apoptosis of PMVECs induced by AngII. Meanwhile, significant increase was noticed in the expression of STAT3, phosphorylation of Y705-STAT3, and migration from cytoplasm to the nucleus after IL-22 treatment (P < 0.05). The activation of STAT3 by IL22 showed significant attenuation after AG490 treatment. Our data indicated that IL22 showed protective effects on lung injury through inhibiting the AngII-induced PMVECs apoptosis and PMVEC barrier injury by activating the JAK2/STAT3 signaling pathway.
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Affiliation(s)
- Zhiyong Wu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China.
| | - Zhipeng Hu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Xin Cai
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Wei Ren
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Feifeng Dai
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Huagang Liu
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Jinxing Chang
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
| | - Bowen Li
- Department of Cardiovascular Surgery, Renmin Hospital of Wuhan University, Jiefang Road 238, Wuhan, 430060, China
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66
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Madonna S, Scarponi C, Morelli M, Sestito R, Scognamiglio PL, Marasco D, Albanesi C. SOCS3 inhibits the pathological effects of IL-22 in non-melanoma skin tumor-derived keratinocytes. Oncotarget 2017; 8:24652-24667. [PMID: 28445952 PMCID: PMC5421877 DOI: 10.18632/oncotarget.15629] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Accepted: 02/15/2017] [Indexed: 12/21/2022] Open
Abstract
Basal cell carcinomas (BCC) and squamous-cell carcinomas (SCC) are common malignancies in humans, caused by neoplastic transformation of keratinocytes of the basal or suprabasal layers of epidermis, respectively. Tumor-infiltrating lymphocytes (TILs) are frequently found in BCC and SCC, and functionally promote epithelial carcinogenesis. TILs secreting IL-22, in particular, participate to BCC and SCC growth by inducing keratinocyte proliferation and migration, as well as the expression of inflammatory, anti-apoptotic and pro-angiogenic genes.In this study, we identified SOCS3 as a valid candidate to be manipulated for suppressing tumorigenic functions in BCC and SCC. We found that SOCS3 and SOCS1 expression was reduced in vivo, in tumor lesions of BCC and SCC, as compared to other skin inflammatory conditions such as psoriasis, despite the high number of IL-22-secreting TILs. Moreover, IL-22 was not able to induce in vitro the transcriptional expression of SOCS3 in BCC-or SCC-derived keratinocytes, contrarily to healthy cells. Aimed at rescuing SOCS3 activity in these tumor contexts, a SOCS3-derived peptide, named KIR-ESS, was synthesized, and its ability in suppressing IL-22-induced responses was evaluated in healthy and transformed keratinocytes. We found that KIR-ESS peptide efficiently suppressed the IL-22 molecular signaling in keratinocytes, by acting on STAT3 and Erk1/2 cascade, as well as on the expression of STAT3-dependent downstream genes. Interestingly, after treatment with peptide, both healthy and transformed keratinocytes could no longer aberrantly proliferate and migrate in response to IL-22. Finally, treatment of athymic nude mice bearing SCC xenografts with KIR-ESS peptide concomitantly reduced tumor growth and activated STAT3 levels. As a whole, these data provides the rationale for the use in BCC and SCC skin tumors of SOCS3 mimetics, being able to inhibit the deleterious effects of IL-22 in these contexts.
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Affiliation(s)
- Stefania Madonna
- Laboratory of Experimental Immunology, IDI-IRCCS, Fondazione “Luigi M. Monti” (FLMM), Rome, Italy
| | - Claudia Scarponi
- Laboratory of Experimental Immunology, IDI-IRCCS, Fondazione “Luigi M. Monti” (FLMM), Rome, Italy
| | - Martina Morelli
- Laboratory of Experimental Immunology, IDI-IRCCS, Fondazione “Luigi M. Monti” (FLMM), Rome, Italy
| | - Rosanna Sestito
- Laboratory of Experimental Immunology, IDI-IRCCS, Fondazione “Luigi M. Monti” (FLMM), Rome, Italy
- Current address: Preclinical Models and New Therapeutic Agents Unit, Regina Elena National Cancer Institute, Rome, Italy
| | | | - Daniela Marasco
- Department of Pharmacy, CIRPEB, University of Naples “Federico II”, Naples, Italy
| | - Cristina Albanesi
- Laboratory of Experimental Immunology, IDI-IRCCS, Fondazione “Luigi M. Monti” (FLMM), Rome, Italy
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67
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Limagne E, Thibaudin M, Euvrard R, Berger H, Chalons P, Végan F, Humblin E, Boidot R, Rébé C, Derangère V, Ladoire S, Apetoh L, Delmas D, Ghiringhelli F. Sirtuin-1 Activation Controls Tumor Growth by Impeding Th17 Differentiation via STAT3 Deacetylation. Cell Rep 2017; 19:746-759. [DOI: 10.1016/j.celrep.2017.04.004] [Citation(s) in RCA: 96] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Revised: 02/24/2017] [Accepted: 03/31/2017] [Indexed: 01/01/2023] Open
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68
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Peng C, Zhang S, Lei L, Zhang X, Jia X, Luo Z, Huang X, Kuang Y, Zeng W, Su J, Chen X. Epidermal CD147 expression plays a key role in IL-22-induced psoriatic dermatitis. Sci Rep 2017; 7:44172. [PMID: 28272440 PMCID: PMC5341158 DOI: 10.1038/srep44172] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Accepted: 01/27/2017] [Indexed: 02/08/2023] Open
Abstract
Psoriasis is a chronic inflammatory skin disease characterized by abnormal keratinocyte proliferation and terminal differentiation. Interleukin-22 (IL-22) and the transcription factor Stat3 play pivotal roles in the pathogenesis of psoriasis. CD147 is a transmembrane glycosylation protein that belongs to the immunoglobulin superfamily. Our previous studies have shown that CD147 is a marker of high keratinocyte proliferation and poor keratinocyte differentiation as well as a psoriasis susceptibility gene. The current study demonstrates that CD147 is highly expressed in psoriatic skin lesions. Specific CD147 over-expression in the epidermis of K5-promoter transgenic mice promotes imiquimod (IMQ)-induced psoriasis-like inflammation characterized by acanthosis, granular layer loss and inflammatory cell infiltration. We also found that IL-22 increases CD147 transcription in vitro and in vivo and that Stat3 binds directly to the CD147 promoter between positions -854 and -440, suggesting that CD147 expression is up-regulated in patients with psoriasis through Stat3 activation. In addition, CD147 knockdown dramatically blocks IL-22-mediated Stat3 activation as well as IL-22-induced cytokine, chemokine and antimicrobial factor expression. Together, these findings show that CD147 is a novel and key mediator of IL-22-induced psoriatic alterations in the epidermis and might be a therapeutic target in patients with psoriasis.
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Affiliation(s)
- Cong Peng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - ShengXi Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Li Lei
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xu Zhang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xuekun Jia
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhongling Luo
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaoyan Huang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yanhong Kuang
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Weiqi Zeng
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Juan Su
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiang Chen
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
- Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
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69
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Mulcahy ME, Leech JM, Renauld JC, Mills KH, McLoughlin RM. Interleukin-22 regulates antimicrobial peptide expression and keratinocyte differentiation to control Staphylococcus aureus colonization of the nasal mucosa. Mucosal Immunol 2016; 9:1429-1441. [PMID: 27007677 DOI: 10.1038/mi.2016.24] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 02/03/2016] [Indexed: 02/04/2023]
Abstract
The local immune response occurring during Staphylococcus aureus nasal colonization remains ill-defined. Studies have highlighted the importance of T-cell immunity in controlling S. aureus colonization of the nasal mucosa. We extend these observations, identifying a critical role for interleukin (IL)-22 in this process. IL-22 is basally expressed within the nasal mucosa and is induced upon S. aureus colonization. IL-22 is produced by CD4+ and CD8+ T lymphocytes at this site, with innate-like lymphocytes also contributing. IL-22-/- mice demonstrate significantly elevated levels of S. aureus nasal colonization as compared with wild-type (WT) mice. This was associated with reduced expression of antimicrobial peptides (AMPs) in the nose. Furthermore, expression of staphylococcal ligands loricrin and cytokeratin 10 was higher in the noses of IL-22-/- as compared with WT mice. IL-17 has been shown to regulate S. aureus nasal colonization by controlling local neutrophil responses; however, IL-17 expression and neutrophil responses were comparable in the noses of IL-22-/- and WT mice during S. aureus colonization. We conclude that IL-22 has an important role in controlling S. aureus nasal colonization through distinct mechanisms, with IL-22 mediating its effect exclusively by inducing AMP expression and controlling availability of staphylococcal ligands.
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Affiliation(s)
- M E Mulcahy
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - J M Leech
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
| | - J-C Renauld
- Ludwig Institute for Cancer Research and Experimental Medicine Unit, Universite Catholique de Louvain, Brussels, Belgium
| | - K Hg Mills
- Immune Regulation Research Group, School of Biochemistry and Immunology, Trinity College Dublin, Dublin, Ireland
| | - R M McLoughlin
- Host-Pathogen Interactions Group, School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin, Ireland
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70
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Zhang Y, Kolonin MG. Cytokine signaling regulating adipose stromal cell trafficking. Adipocyte 2016; 5:369-374. [PMID: 27994950 DOI: 10.1080/21623945.2016.1220452] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 07/27/2016] [Accepted: 07/28/2016] [Indexed: 01/31/2023] Open
Abstract
Adipocyte progenitors, known as adipose stromal cells (ASC), can become mobilized, recruited by tumors, and contribute to cancer progression. Mechanisms underlying ASC trafficking have remained obscure. We recently reported that CXCL1 expressed by cancer cells chemoattracts ASC expressing CXCR1 in obesity. As a candidate mechanism of CXCL1 activation, we identified interleukin (IL)-22, systemic circulation of which is increased in obesity. It has been reported that IL-22 signaling through IL-22R is upstream of CXCL1. Here, we provide evidence that IL-22 expression by leukocytes infiltrating WAT and IL-22R expression by tumors is obesity-dependent. We propose that obesity-associated adipocyte death and the resulting recruitment of leukocytes triggers the IL-22 signaling cascade that induces CXCL1 secretion by cancer cells responsible for ASC trafficking to tumors.
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71
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Mei Z, Zhou L, Zhu Y, Jie K, Fan D, Chen J, Liu X, Jiang L, Jia Q, Li W. Interleukin-22 promotes papillary thyroid cancer cell migration and invasion through microRNA-595/Sox17 axis. Tumour Biol 2016; 37:11753-11762. [PMID: 27022736 DOI: 10.1007/s13277-016-5030-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Accepted: 03/18/2016] [Indexed: 12/18/2022] Open
Abstract
Interleukin-22 (IL-22) is an inflammatory cytokine mainly produced by activated Th17 and Th22 cells. The data presented here demonstrate that IL-22 induced the migration and invasion of papillary thyroid cancer (PTC) cells. MicroRNA expression analysis and functional studies indicated that IL-22-mediated migration and invasion is positively regulated by miR-595. Further mechanistic studies revealed that sex-determining region Y-box 17 (Sox17) is directly targeted by miR-595. We then demonstrated that IL-22 regulated migration and invasion of PTC cells via inhibiting Sox17 expression. Interestingly, in PTC cell lines and PTC tissues, expression of IL-22 and miR-595 was upregulated and Sox17 downregulated compared with normal thyroid, and their expression levels were closely correlated. Taken together, this present study suggests that IL-22 stimulation enhances the migration and invasion of PTC cells by regulating miR-595 and its target Sox17.
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Affiliation(s)
- Zhidan Mei
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Li Zhou
- Animal Biosafety Level III Laboratory at the Center for Animal Experiment, State Key Laboratory of Virology, Wuhan University, Wuhan, 430071, China
| | - Youhua Zhu
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Kejia Jie
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Daqing Fan
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Jian Chen
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Xiguo Liu
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Liang Jiang
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Qike Jia
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China
| | - Wei Li
- The department of Head and Neck surgery, Hubei Cancer Hospital, Wuhan, Hubei, 430079, China.
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72
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Palombo R, Savini I, Avigliano L, Madonna S, Cavani A, Albanesi C, Mauriello A, Melino G, Terrinoni A. Luteolin-7-glucoside inhibits IL-22/STAT3 pathway, reducing proliferation, acanthosis, and inflammation in keratinocytes and in mouse psoriatic model. Cell Death Dis 2016; 7:e2344. [PMID: 27537526 PMCID: PMC5108310 DOI: 10.1038/cddis.2016.201] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 05/20/2016] [Accepted: 06/01/2016] [Indexed: 12/30/2022]
Abstract
The epidermis is a dynamic tissue in which keratinocytes proliferate in the basal layer and undergo a tightly controlled differentiation while moving into the suprabasal layers. The balance between keratinocyte proliferation, differentiation, and death is essential, and its perturbation can result in pathological changes. Some common skin diseases, such as psoriasis, are characterized by hyperproliferation accompanied by inflammatory reactions, suggesting that molecules with topical anti-inflammatory and ROS scavenging abilities may be useful for their treatment. Here we investigate the potential of the flavone Luteolin-7-glucoside (LUT-7G) as a treatment for psoriasis. We show that LUT-7G leads to a modification of the cell cycle and the induction of keratinocyte differentiation, with modification of energy, fatty acid, and redox metabolism. LUT-7G treatment also neutralizes the proliferative stimulus induced by the proinflammatory cytokines IL-22 and IL-6 in HEKn. Moreover, in the Imiquimod (IMQ) mouse model of psoriasis, topical administration of LUT-7G leads to a marked reduction of acanthosis and re-expression of epidermal differentiation markers. Dissection of the IL-22 signalling pathway, activated by IMQ treatment, demonstrates that LUT-7G impairs the nuclear translocation of phosphorylated (activated) STAT3, blocking the IL-22 signalling cascade. Thus LUT-7G appears to be a promising compound for the treatment of hyperproliferative and inflammatory skin diseases, such as psoriasis.
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Affiliation(s)
- R Palombo
- Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier, 1, Rome 00133, Italy
| | - I Savini
- Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier, 1, Rome 00133, Italy
| | - L Avigliano
- Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier, 1, Rome 00133, Italy
| | - S Madonna
- Experimental Immunology Laboratory, Biochemistry Laboratory, IDI-IRCCS-FLMM, Via dei Monti di Creta, 104, Rome 00167, Italy
| | - A Cavani
- Experimental Immunology Laboratory, Biochemistry Laboratory, IDI-IRCCS-FLMM, Via dei Monti di Creta, 104, Rome 00167, Italy
| | - C Albanesi
- Experimental Immunology Laboratory, Biochemistry Laboratory, IDI-IRCCS-FLMM, Via dei Monti di Creta, 104, Rome 00167, Italy
| | - A Mauriello
- Department Biomedicine and Prevention, University of Rome “Tor Vergata”, Via Montpellier, 1, Rome 00133, Italy
| | - G Melino
- Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier, 1, Rome 00133, Italy
- Medical Research Council, Toxicology Unit, Hodgkin Building, Leicester University, Lancaster Road, P.O. Box 138, Leicester LE1 9HN, UK
| | - A Terrinoni
- Biochemistry Laboratory, IDI-IRCCS-FLMM, Department of Experimental Medicine and Surgery, University of Rome “Tor Vergata”, Via Montpellier, 1, Rome 00133, Italy
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Rasheed H, El-Komy M, Hegazy RA, Gawdat HI, AlOrbani AM, Shaker OG. Expression of sirtuins 1, 6, tumor necrosis factor, and interferon-γ in psoriatic patients. Int J Immunopathol Pharmacol 2016; 29:764-768. [PMID: 27496874 DOI: 10.1177/0394632016662475] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 07/07/2016] [Indexed: 12/21/2022] Open
Abstract
Sirtuins (SIRT) have been regarded as culprits in the pathogenesis of various diseases. Their exact role has not been explained. This study aimed to assess the expression of SIRT1, SIRT6, tumor necrosis factor (TNF)-α, and interferon (IFN)-γ in psoriatic patients. Thirty psoriatic patients and 22 controls were enrolled. Clinical examination and Psoriasis Area and Severity Index (PASI) were obtained. Two skin biopsies (lesional, peri-lesional) and one from controls were obtained. Tissue levels of SIRT1, SIRT6, TNF-α, and IFN-γ were measured using ELISA. SIRT1 was significantly lower in lesional skin with gradual increase in perilesional followed by control skin (P <0.001). SIRT6, TNF-α, and IFN-γ were significantly higher in lesional than perilesional and control skin (P <0.001). Significant positive correlations were found between SIRT1 and TNF-α, IFN-γ and between SIRT6 and TNF-α in peri-lesional skin. SIRT1 and SIRT6 are potentially involved in the pathogenesis of psoriasis. Modulating their action could offer a novel therapy for such disease.
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Affiliation(s)
- H Rasheed
- Dermatology Department, Faculty of Medicine, Cairo University, Egypt
| | - Mhm El-Komy
- Dermatology Department, Faculty of Medicine, Cairo University, Egypt
| | - R A Hegazy
- Dermatology Department, Faculty of Medicine, Cairo University, Egypt
| | - H I Gawdat
- Dermatology Department, Faculty of Medicine, Cairo University, Egypt
| | - A M AlOrbani
- Dermatology Department, Faculty of Medicine, Cairo University, Egypt
| | - O G Shaker
- Biochemistry Department, Faculty of Medicine, Cairo University, Egypt
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74
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Jin H, Chen H, Yu K, Zhang J, Li B, Cai N, Pan J. Resveratrol inhibits phosphorylation within the signal transduction and activator of transcription 3 signaling pathway by activating sirtuin 1 in SW1353 chondrosarcoma cells. Mol Med Rep 2016; 14:2685-90. [PMID: 27484919 DOI: 10.3892/mmr.2016.5554] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Accepted: 06/27/2016] [Indexed: 11/06/2022] Open
Abstract
The present study assessed the mechanism by which resveratrol (Res) inhibits the growth of SW1353 chondrosarcoma cells and examined whether sirtuin 1 (Sirt1) activation affects phosphorylation within the signal transduction and activator of transcription 3 (STAT3) signaling pathway. The present study used SW1353 chondrosarcoma cells in the logarithmic phase of growth (control and treatment groups). The latter group was treated with Res at 25 and 50 µmol/l for 24 h, and cell viability, proliferation and apoptosis were analyzed using the cell counting kit‑8 assay, colony counting and Hoechst staining, respectively. The expression levels of caspase‑3, cleaved caspase‑3, B‑cell lymphoma‑2 (BCL‑2), BCL-2 associated X protein (Bax), STAT3 and phosphorylated (p‑)STAT3) were measured by Western blotting. SW1353 cells were transfected with small interfering (si)RNA targeting Sirt1 and the expression levels of Sirt1, STAT3 and p-STAT3 were assessed. Exposure of SW1353 cells to Res reduced cell viability in a dose‑dependent manner (P<0.01). Additionally, cell proliferation was significantly inhibited and the cell nuclei exhibited apoptotic characteristics. Cleaved caspase‑3, Sirt1 and Bax levels were upregulated. The expression levels of BCL‑2 and p‑STAT3 were downregulated. Additionally, the BCL‑2/Bax ratio was reduced compared with the control group. The total STAT3 level was unaffected. Res treatment activated Sirt1, however, in cells transfected with Sirt1‑siRNA, the ability of resveratrol to suppress p‑STAT3 expression was compromised. Overall, it was revealed that Res treatment induced apoptosis, inhibited proliferation and affected phosphorylation within the STAT3 signaling pathway by activating Sirt1 in SW1353 chondrosarcoma cells.
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Affiliation(s)
- Haidong Jin
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Hui Chen
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Kehe Yu
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jingdong Zhang
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Bin Li
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Ningyu Cai
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Jun Pan
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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75
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Avitabile S, Odorisio T, Madonna S, Eyerich S, Guerra L, Eyerich K, Zambruno G, Cavani A, Cianfarani F. Interleukin-22 Promotes Wound Repair in Diabetes by Improving Keratinocyte Pro-Healing Functions. J Invest Dermatol 2015; 135:2862-2870. [PMID: 26168231 DOI: 10.1038/jid.2015.278] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 06/08/2015] [Accepted: 06/18/2015] [Indexed: 11/09/2022]
Abstract
Impaired re-epithelialization, imbalanced expression of cytokines and growth factors, and vascular disease contribute to healing impairment in diabetes. IL-22, a pro-inflammatory cytokine mediating a cross-talk between immune system and epithelial cells, has been shown to have a role in repair processes. In this study we aimed to investigate IL-22 regenerative potential in the poor healing context of diabetic wounds. By using streptozotocin-induced diabetic mice, we demonstrated that IL-22 wound treatment significantly accelerated the healing process, by promoting re-epithelialization, granulation tissue formation, and vascularization. Improved re-epithelialization was associated with increased keratinocyte proliferation and signal transducer and activator of transcription 3 (STAT3) activation. We showed that endogenous IL-22 content was reduced at both mRNA and protein level during the inflammatory phase of diabetic wounds, with fewer IL-22-positive cells infiltrating the granulation tissue. We demonstrated that IL-22 treatment promoted proliferation and injury repair of hyperglycemic keratinocytes and induced activation of STAT3 and extracellular signal-regulated kinase transduction pathways in keratinocytes grown in hyperglycemic condition or isolated from diabetic patients. Finally, we demonstrated that IL-22 treatment was able to inhibit diabetic keratinocyte differentiation while promoting vascular endothelial growth factor release. Our data indicate a pro-healing role of IL-22 in diabetic wounds, suggesting a therapeutic potential for this cytokine in diabetic ulcer management.
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Affiliation(s)
- Simona Avitabile
- Laboratory of Experimental Immunology, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy
| | - Teresa Odorisio
- Laboratory of Biochemistry, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy
| | - Stefania Madonna
- Laboratory of Experimental Immunology, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy
| | - Stefanie Eyerich
- ZAUM - Center of Allergy and Environment, Technische Universität and Helmholtz Center, Munich, Germany
| | - Liliana Guerra
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy
| | - Kilian Eyerich
- Department of Dermatology and Allergy, Technische Universität, Munich, Germany
| | - Giovanna Zambruno
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy
| | - Andrea Cavani
- Laboratory of Experimental Immunology, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy.
| | - Francesca Cianfarani
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata IRCCS, Rome, Italy.
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76
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Weidenbusch M, Rodler S, Anders HJ. Interleukin-22 in kidney injury and regeneration. Am J Physiol Renal Physiol 2015; 308:F1041-6. [PMID: 25740595 DOI: 10.1152/ajprenal.00005.2015] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Accepted: 03/02/2015] [Indexed: 12/20/2022] Open
Abstract
Interleukins have become well-known regulators of innate and adaptive immunity-related tissue inflammation. Recently, IL-22 has gained a lot of interest for its unique functions in maintaining and regaining epithelial integrity. IL-22 is exclusively secreted by different immune cell subsets, while IL-22 receptors are mainly expressed by epithelial cells. As the kidney is largely an epithelial organ, the functional role of IL-22 in the kidney deserves to be explored in detail. Here, we briefly summarize the key features of IL-22 biology and review the available data on its expression and functional roles in kidney injury and kidney regeneration. Furthermore, we provide suggestions on how to explore this evolving field in the future.
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Affiliation(s)
- Marc Weidenbusch
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Germany
| | - Severin Rodler
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Germany
| | - Hans-Joachim Anders
- Nephrologisches Zentrum, Medizinische Klinik und Poliklinik IV, Klinikum der Universität, München, Germany
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77
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Nardinocchi L, Sonego G, Passarelli F, Avitabile S, Scarponi C, Failla CM, Simoni S, Albanesi C, Cavani A. Interleukin-17 and interleukin-22 promote tumor progression in human nonmelanoma skin cancer. Eur J Immunol 2015; 45:922-31. [PMID: 25487261 DOI: 10.1002/eji.201445052] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Revised: 10/28/2014] [Accepted: 12/03/2014] [Indexed: 12/17/2022]
Abstract
Interleukin-17 (IL-17) and IL-22 have been reported to play critical roles in autoimmunity and inflammation but information about their role in cancer is limited. In this study, we investigated the role of IL-17 and IL-22 in the progression of human skin basal-cell carcinoma (BCC) and squamous-cell carcinoma (SCC). We found that both tumor types are infiltrated with an high number of IL-17(+) and IL-22(+) T lymphocytes, as demonstrated by immunohistochemistry and by FACS analysis performed on peritumoral T-cell lines isolated from skin biopsies. In vitro studies demonstrated that proliferation and migration of the BCC- and SCC-cell lines M77015 and CAL27 were increased by IL-17 and IL-22. Moreover, IL-17, alone or in combination with TNF-α, was able to induce the production of two cytokines important for tumor progression, IL-6 and IL-8, in CAL27. We also showed that IL-17 upregulated NF-κB signaling, while IL-22 activated the STAT3 pathway and the antiapoptotic AKT protein in M77015 and CAL27. Finally, in vivo experiments demonstrated that IL-17 and IL-22 enhanced tumor growth in nude mice injected with CAL27. Altogether, our findings indicate that high levels of IL-22 and IL-17 in the BCC and SCC microenvironment promote tumor progression.
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Affiliation(s)
- Lavinia Nardinocchi
- Laboratory of Experimental Immunology, Istituto Dermopatico dell'Immacolata, Rome, Italy
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78
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Chiricozzi A, Faleri S, Saraceno R, Bianchi L, Buonomo O, Chimenti S, Chimenti MS. Tofacitinib for the treatment of moderate-to-severe psoriasis. Expert Rev Clin Immunol 2015; 11:443-55. [PMID: 25666451 DOI: 10.1586/1744666x.2015.1013534] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Because of the increased knowledge about the underlying cytokine network in psoriasis, selective systemic agents for the treatment of moderate-to-severe psoriasis have been developed during the past decade. The marked upregulation of JAK/STAT pathways in psoriasis and the identification of multiple key mediators in psoriasis pathogenesis that signal through JAK/STAT pathways led to investigation of JAK proteins as potential therapeutic targets for psoriasis treatment. A novel JAK-STAT inhibitor, tofacitinib, has been tested in preclinical studies for the treatment of psoriasis. Considering the satisfactory safety profile and the encouraging efficacy observed in the Phase II and Phase III trials, tofacitinib may represent an important therapeutic to be included into the psoriasis paradigm.
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79
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Clark-Knowles KV, Dewar-Darch D, Jardine KE, McBurney MW. Modulation of tumorigenesis by dietary intervention is not mediated by SIRT1 catalytic activity. PLoS One 2014; 9:e112406. [PMID: 25380034 PMCID: PMC4224430 DOI: 10.1371/journal.pone.0112406] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 10/14/2014] [Indexed: 12/31/2022] Open
Abstract
The protein deacetylase SIRT1 is involved in the regulation of a large number of cellular processes that are thought to be required for cancer initiation and progression. Both SIRT1 activity and tumorigenesis can be influenced by dietary fat and polyphenolics. We set out to determine whether dietary modulations of tumorigenesis are mediated by SIRT1 catalytic functions. We introduced a mammary gland tumor-inducing transgene, MMTV-PyMT, into stocks of mice bearing a H355Y point mutation in the Sirt1 gene that abolishes SIRT1 catalytic activity. Tumor latency was reduced in animals fed a high fat diet but this effect was not dependent on SIRT1 activity. Resveratrol had little effect on tumor formation except in animals heterozygous for the mutant Sirt1 gene. We conclude that the effects of these dietary interventions on tumorigenesis are not mediated by modulation of SIRT1 catalytic activity.
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MESH Headings
- Analysis of Variance
- Animals
- Antigens, Polyomavirus Transforming/genetics
- Antineoplastic Agents, Phytogenic/pharmacology
- Biocatalysis
- Cell Transformation, Neoplastic/drug effects
- Cell Transformation, Neoplastic/genetics
- Diet, High-Fat
- Heterozygote
- Male
- Mammary Neoplasms, Experimental/diet therapy
- Mammary Neoplasms, Experimental/genetics
- Mammary Neoplasms, Experimental/metabolism
- Mammary Tumor Virus, Mouse/genetics
- Mice, Transgenic
- Point Mutation
- Resveratrol
- Sirtuin 1/genetics
- Sirtuin 1/metabolism
- Stilbenes/pharmacology
- Tumor Burden/drug effects
- Tumor Burden/genetics
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Affiliation(s)
| | - Danielle Dewar-Darch
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Karen E. Jardine
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Michael W. McBurney
- Centre for Cancer Therapeutics, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
- Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
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80
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Expression of T-helper 17 cells and signal transducers in patients with psoriasis vulgaris of blood-heat syndrome and blood-stasis syndrome. Chin J Integr Med 2014; 21:10-6. [DOI: 10.1007/s11655-014-1769-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Indexed: 10/24/2022]
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81
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Scarponi C, Butturini E, Sestito R, Madonna S, Cavani A, Mariotto S, Albanesi C. Inhibition of inflammatory and proliferative responses of human keratinocytes exposed to the sesquiterpene lactones dehydrocostuslactone and costunolide. PLoS One 2014; 9:e107904. [PMID: 25226283 PMCID: PMC4166670 DOI: 10.1371/journal.pone.0107904] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 08/19/2014] [Indexed: 12/18/2022] Open
Abstract
The imbalance of the intracellular redox state and, in particular, of the glutathione (GSH)/GSH disulfide couple homeostasis, is involved in the pathogenesis of a number of diseases. In many skin diseases, including psoriasis, oxidative stress plays an important role, as demonstrated by the observation that treatments leading to increase of the local levels of oxidant species ameliorate the disease. Recently, dehydrocostuslactone (DCE) and costunolide (CS), two terpenes naturally occurring in many plants, have been found to exert various anti-inflammatory and pro-apoptotic effects on different human cell types. These compounds decrease the level of the intracellular GSH by direct interaction with it, and, therefore, can alter cellular redox state. DCE and CS can trigger S-glutathionylation of various substrates, including the transcription factor STAT3 and JAK1/2 proteins. In the present study, we investigated on the potential role of DCE and CS in regulating inflammatory and proliferative responses of human keratinocytes to cytokines. We demonstrated that DCE and CS decreased intracellular GSH levels in human keratinocytes, as well as inhibited STAT3 and STAT1 phosphorylation and activation triggered by IL-22 or IFN-γ, respectively. Consequently, DCE and CS decreased the IL-22- and IFN-γ-induced expression of inflammatory and regulatory genes in keratinocytes, including CCL2, CXCL10, ICAM-1 and SOCS3. DCE and CS also inhibited proliferation and cell-cycle progression-related gene expression, as well as they promoted cell cycle arrest and apoptosis. In parallel, DCE and CS activated the anti-inflammatory EGFR and ERK1/2 molecules in keratinocytes, and, thus, wound healing in an in vitro injury model. In light of our findings, we can hypothesize that the employment of DCE and CS in psoriasis could efficiently counteract the pro-inflammatory effects of IFN-γ and IL-22 on keratinocytes, revert the apoptosis-resistant phenotype, as well as inhibit hyperproliferation in the psoriatic epidermis.
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Affiliation(s)
| | - Elena Butturini
- Department of Life and Reproduction Sciences, University of Verona, Verona, Italy
| | | | | | - Andrea Cavani
- Experimental Immunology Laboratory, IDI-IRCCS, Rome, Italy
| | - Sofia Mariotto
- Department of Life and Reproduction Sciences, University of Verona, Verona, Italy
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82
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Lerman G, Sharon M, Leibowitz-Amit R, Sidi Y, Avni D. The crosstalk between IL-22 signaling and miR-197 in human keratinocytes. PLoS One 2014; 9:e107467. [PMID: 25208211 PMCID: PMC4160297 DOI: 10.1371/journal.pone.0107467] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Accepted: 08/16/2014] [Indexed: 12/13/2022] Open
Abstract
The interaction between the immune system and epithelial cells is tightly regulated. Aberrations of this balance may result in inflammatory diseases such as psoriasis, inflammatory bowel disease and rheumatoid arthritis. IL-22 is produced by Th17, Th22 and Th1 cells. Putative targets for IL-22 are cells in the skin, kidney, digestive and respiratory systems. The highest expression of IL-22 receptor is found in the skin. IL-22 plays an important role in the pathogenesis of T cell-mediated inflammatory diseases such as psoriasis, inflammatory bowel disease and rheumatoid arthritis. Recently, we found that miR-197 is down regulated in psoriatic lesions. In the present work we show that miR-197 over expression inhibits keratinocytes proliferation induced by IL-22 and keratinocytes migration. In addition, we found that IL-22 activates miR-197 expression through the binding of phosphorylated STAT3 to sequences in the putative promoter of miR-197. Finally we found that IL-22 receptor subunit IL22RA1 is a direct target of miR-197. Hence, we identified a novel feedback loop controlling IL-22 signaling, in which IL-22 induces miR-197, which in turn, negatively regulates IL-22 receptor and attenuates the biological outcome of such signaling. Regulation of this pathway may be important in inflammatory skin disorders such a psoriasis and in wound healing.
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Affiliation(s)
- Galya Lerman
- Laboratory of Molecular Cell Biology, Center for Cancer Research and Department of Medicine C, Sheba Medical Center, Tel Hashomer, Israel
| | - Moran Sharon
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Raya Leibowitz-Amit
- Laboratory of Molecular Cell Biology, Center for Cancer Research and Department of Medicine C, Sheba Medical Center, Tel Hashomer, Israel
- Institute of Oncology, Sheba Medical Center, Tel Hashomer, Israel
| | - Yechezkel Sidi
- Laboratory of Molecular Cell Biology, Center for Cancer Research and Department of Medicine C, Sheba Medical Center, Tel Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Dror Avni
- Laboratory of Molecular Cell Biology, Center for Cancer Research and Department of Medicine C, Sheba Medical Center, Tel Hashomer, Israel
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83
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Ni J, Shen Y, Wang Z, Shao DC, Liu J, Kong YL, Fu LJ, Zhou L, Xue H, Huang Y, Zhang W, Yu C, Lu LM. P300-dependent STAT3 acetylation is necessary for angiotensin II-induced pro-fibrotic responses in renal tubular epithelial cells. Acta Pharmacol Sin 2014; 35:1157-66. [PMID: 25088002 DOI: 10.1038/aps.2014.54] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 05/20/2014] [Indexed: 02/07/2023] Open
Abstract
AIM To explore the signal transducer and activator of transcription 3 (STAT3) signaling pathway, especially STAT3 acetylation, in angiotensin II (Ang II)-induced pro-fibrotic responses in renal tubular epithelial cells. METHODS Rat renal tubular epithelial cell line (NRK-52E) was used. STAT3 acetylation and phosphorylation, as well as the expression of fibronectin, collagen IV and transforming growth factor-β1 (TGF-β1) were examined using Western blotting. The level and localization of STAT3 phosphorylation on Tyr705 were detected with fluorescence immunocytochemistry. The cells were transfected with a plasmid vector carrying p300 gene or siRNA targeting p300 to regulate p300 expression. RESULTS Overexpression of p300 significantly increased STAT3 acetylation on Lys685, STAT3 phosphorylation on Tyr705, and the expression of TGF-β1, collagen IV and fibronectin in the cells. Treatment of the cells with Ang II (1 μmol/L) significantly increased STAT3 phosphorylation on Tyr705 through JAK2 activation, and dose-dependently increased the expression of fibronectin, collagen IV and TGF-β1. Pretreatment with curcumin, an inhibitor of JAK2 and p300, blocked Ang II-induced effects. Knockdown of p300 significantly decreased STAT3 acetylation on Lys685, and abolished Ang II-stimulated STAT3 phosphorylation on Tyr705, whereas pretreatment of the cells with C646, a selective inhibitor of p300, inhibited Ang II-induced STAT3 nuclear translocation and the expression of TGF-β1, collagen IV and fibronectin. Pretreatment of the cells with AG490, a JAK2 inhibitor, markedly inhibited Ang II-induced STAT3 phosphorylation on Tyr705 and fibronectin expression. CONCLUSION p300-dependent STAT3 acetylation is necessary for Ang II-induced STAT3 phosphorylation and the consequent pro-fibrotic responses in renal tubular epithelial cells in vitro.
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84
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Ni J, Shen Y, Wang Z, Shao DC, Liu J, Fu LJ, Kong YL, Zhou L, Xue H, Huang Y, Zhang W, Yu C, Lu LM. Inhibition of STAT3 acetylation is associated with angiotesin renal fibrosis in the obstructed kidney. Acta Pharmacol Sin 2014; 35:1045-54. [PMID: 24976155 DOI: 10.1038/aps.2014.42] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Accepted: 04/25/2014] [Indexed: 02/07/2023] Open
Abstract
AIM To explore the relationship between the signal transducer and activator of transcription 3 (STAT3) signaling and renal fibrosis. METHODS Rat renal tubular epithelial NRK-52E cells were treated with angiotesin II (Ang II), nicotinamide (an inhibitor of NAD+-dependent class III protein deacetylases, SIRT1-7), or resveratrol (an activator of SIRT1). Mice underwent unilateral ureteral obstruction (UUO) were used for in vivo studies. Renal interstitial fibrosis was observed with HE and Masson's trichrome staining. STAT3 acetylation and phosphorylation, fibronectin, collagen I, collagen IV, and α-smooth muscle actin (α-SMA) levels were examined using Western blotting. RESULTS Nicotinamide (0.625-10 mmol/L) dose-dependently increased STAT3 acetylation on Lys685 and phosphorylation on Tyr705 in NRK-52E cells, accompanied by accumulation of fibronectin and collagen IV. Ang II increased STAT3 phosphorylation on Tyr705 and the expression of fibronectin, collagen IV and α-SMA in the cells. Pretreatment with resveratrol (12.5 μmol/L) blocked Ang II-induced effects in the cells. UUO induced marked STAT3 phosphorylation, fibronectin, collagen IV and α-SMA accumulation, and renal interstitial fibrosis in the obstructed kidneys, which were significantly attenuated by daily administration of resveratrol (100 mg/kg). CONCLUSION STAT3 acetylation plays an important role in activation of STAT3 signaling pathway and consequent renal fibrosis.
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85
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Quaranta M, Eyerich S, Knapp B, Nasorri F, Scarponi C, Mattii M, Garzorz N, Harlfinger AT, Jaeger T, Grosber M, Pennino D, Mempel M, Schnopp C, Theis FJ, Albanesi C, Cavani A, Schmidt-Weber CB, Ring J, Eyerich K. Allergic contact dermatitis in psoriasis patients: typical, delayed, and non-interacting. PLoS One 2014; 9:e101814. [PMID: 25058585 PMCID: PMC4109932 DOI: 10.1371/journal.pone.0101814] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Accepted: 06/11/2014] [Indexed: 12/11/2022] Open
Abstract
Psoriasis is characterized by an apoptosis-resistant and metabolic active epidermis, while a hallmark for allergic contact dermatitis (ACD) is T cell-induced keratinocyte apoptosis. Here, we induced ACD reactions in psoriasis patients sensitized to nickel (n = 14) to investigate underlying mechanisms of psoriasis and ACD simultaneously. All patients developed a clinically and histologically typical dermatitis upon nickel challenge even in close proximity to pre-existing psoriasis plaques. However, the ACD reaction was delayed as compared to non-psoriatic patients, with a maximum intensity after 7 days. Whole genome expression analysis revealed alterations in numerous pathways related to metabolism and proliferation in non-involved skin of psoriasis patients as compared to non-psoriatic individuals, indicating that even in clinically non-involved skin of psoriasis patients molecular events opposing contact dermatitis may occur. Immunohistochemical comparison of ACD reactions as well as in vitro secretion analysis of lesional T cells showed a higher Th17 and neutrophilic migration as well as epidermal proliferation in psoriasis, while ACD reactions were dominated by cytotoxic CD8+ T cells and a Th2 signature. Based on these findings, we hypothesized an ACD reaction directly on top of a pre-existing psoriasis plaque might influence the clinical course of psoriasis. We observed a strong clinical inflammation with a mixed psoriasis and eczema phenotype in histology. Surprisingly, the initial psoriasis plaque was unaltered after self-limitation of the ACD reaction. We conclude that sensitized psoriasis patients develop a typical, but delayed ACD reaction which might be relevant for patch test evaluation in clinical practice. Psoriasis and ACD are driven by distinct and independent immune mechanisms.
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Affiliation(s)
- Maria Quaranta
- ZAUM – Center of Allergy and Environment, Technische Universität and Helmholtz Center Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Stefanie Eyerich
- ZAUM – Center of Allergy and Environment, Technische Universität and Helmholtz Center Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Bettina Knapp
- Institute of Computational Biology, Helmholtz Center Munich, Neuherberg, Germany
| | | | | | - Martina Mattii
- ZAUM – Center of Allergy and Environment, Technische Universität and Helmholtz Center Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Natalie Garzorz
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - Anna T. Harlfinger
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - Teresa Jaeger
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - Martine Grosber
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - Davide Pennino
- ZAUM – Center of Allergy and Environment, Technische Universität and Helmholtz Center Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Martin Mempel
- Department of Dermatology, Venereology, and Allergology, University Medicine Goettingen, Goettingen, Germany
| | - Christina Schnopp
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - Fabian J. Theis
- Institute of Computational Biology, Helmholtz Center Munich, Neuherberg, Germany
- Department of Mathematics, Technische Universität Munich, Garching, Germany
| | | | - Andrea Cavani
- Laboratory of experimental immunology, IDI-IRCCS, Rome, Italy
| | - Carsten B. Schmidt-Weber
- ZAUM – Center of Allergy and Environment, Technische Universität and Helmholtz Center Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Johannes Ring
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
| | - Kilian Eyerich
- Department of Dermatology and Allergy, Technische Universität Munich, Munich, Germany
- * E-mail:
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86
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Paoletti I, De Gregorio V, Baroni A, Tufano MA, Donnarumma G, Perez JJ. Amygdalin analogues inhibit IFN-γ signalling and reduce the inflammatory response in human epidermal keratinocytes. Inflammation 2014; 36:1316-26. [PMID: 23933845 DOI: 10.1007/s10753-013-9670-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Peptide T (PT), an octapeptide fragment located in the V2 region of the HIV-1 gp120-coating protein, appears to be beneficial in the treatment of psoriasis. Our previous investigations suggest that keratinocytes play a key role in conditioning the therapeutic effects of PT in psoriasis. The aim of this study was to explore the effects of PT and the peptidomimetic natural products, Dhurrin and Prunasin, on the expression of the IL-6, IL-8, IL-23, HSP70 and ICAM-1 on IFN-γ and TNF-α-NHEK activated cells. Moreover, we analysed the interference of PT and its analogues through STAT-3 activation. Our results show that the analogues tested exhibit the beneficial biological effects of PT, suggesting the primary role of keratinocytes upon which PT and the peptidomimetics act directly, by reducing proinflammatory responses. Its reduction appears to be important for therapeutic approach in psoriasis pathogenesis.
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Affiliation(s)
- Iole Paoletti
- Department of Experimental Medicine, Section of Microbiology and Clinical Microbiology, Second University of Naples, Via Costantinopoli, 16, 80100, Napoli, Italy
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87
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Liu R, Zhong Y, Li X, Chen H, Jim B, Zhou MM, Chuang PY, He JC. Role of transcription factor acetylation in diabetic kidney disease. Diabetes 2014; 63:2440-53. [PMID: 24608443 PMCID: PMC4066331 DOI: 10.2337/db13-1810] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Nuclear factor (NF)-κB and signal transducer and activator of transcription 3 (STAT3) play a critical role in diabetic nephropathy (DN). Sirtuin-1 (SIRT1) regulates transcriptional activation of target genes through protein deacetylation. Here, we determined the roles of Sirt1 and the effect of NF-κB (p65) and STAT3 acetylation in DN. We found that acetylation of p65 and STAT3 was increased in both mouse and human diabetic kidneys. In human podocytes, advanced glycation end products (AGEs) induced p65 and STAT3 acetylation and overexpression of acetylation-incompetent mutants of p65 and STAT3 abrogated AGE-induced expression of NF-κB and STAT3 target genes. Inhibition of AGE formation in db/db mice by pyridoxamine treatment attenuated proteinuria and podocyte injury, restored SIRT1 expression, and reduced p65 and STAT3 acetylation. Diabetic db/db mice with conditional deletion of SIRT1 in podocytes developed more proteinuria, kidney injury, and acetylation of p65 and STAT3 compared with db/db mice without SIRT1 deletion. Treatment of db/db mice with a bromodomain and extraterminal (BET)-specific bromodomain inhibitor (MS417) which blocks acetylation-mediated association of p65 and STAT3 with BET proteins, attenuated proteinuria, and kidney injury. Our findings strongly support a critical role for p65 and STAT3 acetylation in DN. Targeting protein acetylation could be a potential new therapy for DN.
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Affiliation(s)
- Ruijie Liu
- Department of Medicine/Nephrology, Mount Sinai School of Medicine, New York, NY
| | - Yifei Zhong
- Department of Nephrology, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xuezhu Li
- Department of Nephrology, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Haibing Chen
- Department of Endocrinology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Belinda Jim
- Division of Nephrology, Jacobi Medical Center, Bronx, NY
| | - Ming-Ming Zhou
- Department of Structural and Chemical Biology, Mount Sinai School of Medicine, New York, NY
| | - Peter Y Chuang
- Department of Medicine/Nephrology, Mount Sinai School of Medicine, New York, NY
| | - John Cijiang He
- Department of Medicine/Nephrology, Mount Sinai School of Medicine, New York, NYRenal Section, James J. Peters VA Medical Center, Bronx, NY
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88
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Signal integration and gene induction by a functionally distinct STAT3 phosphoform. Mol Cell Biol 2014; 34:1800-11. [PMID: 24615012 DOI: 10.1128/mcb.00034-14] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Aberrant activation of the ubiquitous transcription factor STAT3 is a major driver of solid tumor progression and pathological angiogenesis. STAT3 activity is regulated by numerous posttranslational modifications (PTMs), including Tyr(705) phosphorylation, which is widely used as an indicator of canonical STAT3 function. Here, we report a noncanonical mechanism of STAT3 activation that occurs independently of Tyr(705) phosphorylation. Using quantitative liquid chromatography-tandem mass spectrometry, we have discovered and characterized a novel STAT3 phosphoform that is simultaneously phosphorylated at Thr(714) and Ser(727) by glycogen synthase kinase 3α and -β (GSK-3α/β). Both Thr(714) and Ser(727) are required for STAT3-dependent gene induction in response to simultaneous activation of epidermal growth factor receptor (EGFR) and protease-activated receptor 1 (PAR-1) in endothelial cells. In this combinatorial signaling context, preventing formation of doubly phosphorylated STAT3 by depleting GSK-3α/β is sufficient to disrupt signal integration and inhibit STAT3-dependent gene expression. Levels of doubly phosphorylated STAT3 but not of Tyr(705)-phosphorylated STAT3 are remarkably elevated in clear-cell renal-cell carcinoma relative to adjacent normal tissue, suggesting that the GSK-3α/β-STAT3 pathway is active in the disease. Collectively, our results describe a functionally distinct, noncanonical STAT3 phosphoform that positively regulates target gene expression in a combinatorial signaling context and identify GSK-3α/β-STAT3 signaling as a potential therapeutic target in renal-cell carcinoma.
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89
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Gao W, McCormick J, Connolly M, Balogh E, Veale DJ, Fearon U. Hypoxia and STAT3 signalling interactions regulate pro-inflammatory pathways in rheumatoid arthritis. Ann Rheum Dis 2014; 74:1275-83. [PMID: 24525913 DOI: 10.1136/annrheumdis-2013-204105] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Accepted: 01/24/2014] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To examine the effect of hypoxia on Signal Transducer and Activator of Transcription 3 (STAT3)-induced pro-inflammatory pathways in rheumatoid arthritis (RA). METHODS Detection of phospho-STAT3 was assessed in RA synovial tissue and fibroblasts (RASFC) by immunohistology/immunofluorescence. Primary RASFCs and a normal synoviocyte cell line (K4IM) were cultured under hypoxic and normoxic conditions±Stat3-siRNA, HIF-siRNA or WP1066 (JAK2-inhibitor). HIF1α, p-STAT3, p-STAT1 and Notch-1IC protein expression were analysed by western blot. Functional mechanisms were quantified by invasion chamber, matrigel and migration assays. IL-6, IL-8, IL-10 and matrixmetalloproteinases (MMP)-3 were quantified by ELISA. Notch-1 receptor, its DLL-4 ligand and downstream target genes (hrt-1, hrt-2) were quantified by real-time PCR. The effect of WP1066 on spontaneous secretion of pro/anti-inflammatory cytokines and Notch signalling was examined in RA synovial explants ex vivo. RESULTS p-STAT3 was increased in RA synovium compared with control (p<0.05). Hypoxia induced p-STAT3, p-STAT1 and HIF1α expression, an effect blocked by Stat3-siRNA and WP1066. Hypoxia-induced cell invasion, migration and cytokine production were inhibited by Stat3-siRNA (p<0.05) and WP1066 (p<0.05). While HIF1α siRNA inhibited hypoxia-induced p-STAT3 detection, Stat3-siRNA also inhibited hypoxia-induced HIF1α. Furthermore, hypoxia-induced Notch-1IC, DLL4, hrt-1 and -2 expression were significantly inhibited by WP1066 (p<0.05). Finally, in RA synovial explant cultures ex vivo, WP1066 decreased spontaneous secretion of IL-6, IL-8 and MMP3 (p<0.05), Notch-1 mRNA (p<0.05) and induced IL-10 (p<0.05). CONCLUSIONS This is the first study to provide evidence of a functional link between HIF1α, STAT3 and Notch-1 signalling in the regulation of pro-inflammatory mechanisms in RA, and further supports a role for STAT blockade in the treatment of RA.
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Affiliation(s)
- Wei Gao
- Translational Research Group, Dublin Academic Medical Centre, St Vincent's University Hospital, Dublin, Ireland
| | - Jennifer McCormick
- Translational Research Group, Dublin Academic Medical Centre, St Vincent's University Hospital, Dublin, Ireland
| | - Mary Connolly
- Translational Research Group, Dublin Academic Medical Centre, St Vincent's University Hospital, Dublin, Ireland
| | - Emese Balogh
- Translational Research Group, Dublin Academic Medical Centre, St Vincent's University Hospital, Dublin, Ireland
| | - Douglas J Veale
- Translational Research Group, Dublin Academic Medical Centre, St Vincent's University Hospital, Dublin, Ireland
| | - Ursula Fearon
- Translational Research Group, Dublin Academic Medical Centre, St Vincent's University Hospital, Dublin, Ireland
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90
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Abstract
Interleukin-22 (IL-22) is a key effector molecule that is produced by activated T cells, including T helper 22 (TH22) cells, TH17 cells and TH1 cells, as well as subsets of innate lymphoid cells. Although IL-22 can act synergistically with IL-17 or tumour necrosis factor, some important functions of IL-22 are unique to this cytokine. Data obtained over the past few years indicate that the IL-22-IL-22 receptor subunit 1 (IL-22R1) system has a high potential clinical relevance in psoriasis, ulcerative colitis, graft-versus-host disease, certain infections and tumours, as well as in liver and pancreas damage. This Review highlights current knowledge of the biology of the IL-22-IL-22R1 system, its role in inflammation, tissue protection, regeneration and antimicrobial defence, as well as the positive and potentially negative consequences of its therapeutic modulation.
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Affiliation(s)
- Robert Sabat
- 1] Interdisciplinary Group of Molecular Immunopathology, Institute of Medical Immunology, Department of Dermatology and Allergy, University Medicine Charité, Charitéplatz 1, D-10117 Berlin, Germany. [2] Research Center Immunosciences, University Hospital Charité, Hessische Strasse 3-4, D-10115 Berlin, Germany
| | - Wenjun Ouyang
- Department of Immunology, Genentech, 1 DNA Way, South San Francisco, California 94080, USA
| | - Kerstin Wolk
- 1] Interdisciplinary Group of Molecular Immunopathology, Institute of Medical Immunology, Department of Dermatology and Allergy, University Medicine Charité, Charitéplatz 1, D-10117 Berlin, Germany. [2] Research Center Immunosciences, University Hospital Charité, Hessische Strasse 3-4, D-10115 Berlin, Germany
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91
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Jia L, Wu C. The biology and functions of Th22 cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2014; 841:209-30. [PMID: 25261209 DOI: 10.1007/978-94-017-9487-9_8] [Citation(s) in RCA: 73] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
T helper (Th) cells develop from naïve CD4(+) T cells under lineage-specific culture conditions and are nominated by their lineage-specific cytokines. Th22 cells, new players in adoptive immune responses, are identified by the production of interleukin (IL)-22. Plenty of observations are obtained over the past few years indicating that IL-22 is produced by activated T cells including Th22 cells, Th17 cells, Th1 cells, innate lymphoid cells and some nonlymphocytes. IL-22 functions synergistically with IL-17 or tumor necrosis factor (TNF), however, it plays different roles by IL-22/IL-22 receptor signal transductions in pathologic processes, including inflammations, autoimmunity, tumor, and digestive organs damages. In this chapter, we focus on the biology of IL-22, the generation and regulation of Th22 cells, the possible signal pathways that involved in the functions of Th22 cells, as well as the relationship between Th22 cells and various diseases.
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Affiliation(s)
- Lei Jia
- Key Laboratory of Tropical Disease Control Research of Ministry of Education, Zhongshan School of Medicine, Institute of Immunology, Sun Yat-Sen University, 74th, Zhongshan 2nd Road, Guangzhou, 510080, China
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92
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Frazer LC, Scurlock AM, Zurenski MA, Riley MM, Mintus M, Pociask DA, Sullivan JE, Andrews CW, Darville T. IL-23 induces IL-22 and IL-17 production in response to Chlamydia muridarum genital tract infection, but the absence of these cytokines does not influence disease pathogenesis. Am J Reprod Immunol 2013; 70:472-84. [PMID: 24238108 PMCID: PMC3852156 DOI: 10.1111/aji.12171] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2013] [Accepted: 10/03/2013] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE Chlamydia trachomatis infections are a significant cause of reproductive tract pathology. Protective and pathological immune mediators must be differentiated to design a safe and effective vaccine. METHODS Wild-type mice and mice deficient in IL-22 and IL-23 were infected intravaginally with Chlamydia muridarum, and their course of infection and oviduct pathology were compared. Local genital tract and draining lymph node immune responses were also examined in IL-23-deficient mice. RESULTS IL-22- and IL-23-deficient mice exhibited normal susceptibility to infection and oviduct pathology. IL-23 was required for the development of a Chlamydia-specific Th17 response in the lymph nodes and for production of IL-22 and IL-17 in the genital tract. However, influx of Th1 and innate immune cells was not compromised in the absence of IL-23. CONCLUSION IL-22 and IL-23 play either redundant or minimal roles in the pathogenesis of Chlamydia infection in the mouse model. Induction of Th17-associated cytokines by a Chlamydia vaccine should be avoided as these responses are not central to resolution of infection and have pathologic potential.
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Affiliation(s)
- Lauren C. Frazer
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15201
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Amy M. Scurlock
- Department of Pediatrics, University of Arkansas for Medical Sciences and Arkansas Children’s Hospital Research Institute, Little Rock, Arkansas 72202
| | - Matthew A. Zurenski
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Melissa M. Riley
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Margaret Mintus
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Derek A. Pociask
- Richard King Mellon Foundation Institute for Pediatric Research, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | - Jeanne E. Sullivan
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
| | | | - Toni Darville
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15201
- Department of Pediatrics, Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, Pennsylvania 15224
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93
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Takekoshi T, Wu X, Mitsui H, Tada Y, Kao MC, Sato S, Dwinell MB, Hwang ST. CXCR4 negatively regulates keratinocyte proliferation in IL-23-mediated psoriasiform dermatitis. J Invest Dermatol 2013; 133:2530-2537. [PMID: 23528817 PMCID: PMC3972890 DOI: 10.1038/jid.2013.151] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2012] [Revised: 02/28/2013] [Accepted: 03/04/2013] [Indexed: 02/08/2023]
Abstract
CXCR4 is expressed by basal keratinocytes (KCs), but little is known about its function in inflamed skin. We crossed K14-Cre and CXCR4(flox/flox (f/f)) transgenic mice, resulting in mice with specific loss of the CXCR4 gene in K14-expressing cells (K14-CXCR4KO), including basal KCs. K14-CXCR4KO pups had no obvious skin defects. We compared K14-CXCR4KO and CXCR4(f/f) control mice in an IL-23-mediated psoriasiform dermatitis model and measured skin edema, and histologic and immunohistological changes. IL-23-treated K14-CXCR4KO mice showed a 1.3-fold increase in mean ear swelling, a 2-fold increase in epidermal thickness, and greater parakeratosis. IL-23-treated wild-type (WT) mice showed weak CXCR4 expression in areas of severe epidermal hyperplasia, but strong CXCR4 expression in nonhyperplastic regions, suggesting that CXCR4 may regulate KC proliferation. To test this hypothesis, we overexpressed CXCR4 in HaCaT KC cells and treated them with IL-22 and/or CXCL12 (chemokine (C-X-C motif) ligand 12). CXCL12 blocked IL-22-mediated HaCaT cell proliferation in vitro and synergized with IL-22 in upregulating SOCS3 (suppressor of cytokine signaling 3), a key regulator of STAT3 (signal transducer and activator of transcription 3). SOCS3 was required for CXCR4-mediated growth inhibition. In human psoriatic skin, both CXCR4 and SOCS3 were upregulated in the junctional region at the border of psoriatic plaques. Thus, CXCR4 has an unexpected role in inhibiting KC proliferation and mitigating the effects of proliferative T helper type 17 cytokines.
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Affiliation(s)
- Tomonori Takekoshi
- Department of Dermatology, Medical College of Wisconsin and Froedtert Hospital, Milwaukee, Wisconsin, USA; Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Xuesong Wu
- Department of Dermatology, Medical College of Wisconsin and Froedtert Hospital, Milwaukee, Wisconsin, USA
| | - Hiroshi Mitsui
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Yayoi Tada
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Mandy C Kao
- Department of Dermatology, Medical College of Wisconsin and Froedtert Hospital, Milwaukee, Wisconsin, USA
| | - Shinichi Sato
- Department of Dermatology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Michael B Dwinell
- Department of Microbiology and Molecular Genetics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Sam T Hwang
- Department of Dermatology, Medical College of Wisconsin and Froedtert Hospital, Milwaukee, Wisconsin, USA.
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94
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LI YONGGUANG, ZHU WEI, LI JINGBO, LIU MINGYA, WEI MENG. Resveratrol suppresses the STAT3 signaling pathway and inhibits proliferation of high glucose-exposed HepG2 cells partly through SIRT1. Oncol Rep 2013; 30:2820-8. [DOI: 10.3892/or.2013.2748] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Accepted: 08/21/2013] [Indexed: 11/06/2022] Open
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95
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McBurney MW, Clark-Knowles KV, Caron AZ, Gray DA. SIRT1 is a Highly Networked Protein That Mediates the Adaptation to Chronic Physiological Stress. Genes Cancer 2013; 4:125-34. [PMID: 24020004 DOI: 10.1177/1947601912474893] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
SIRT1 is a NAD(+)-dependent protein deacetylase that has a very large number of established protein substrates and an equally impressive list of biological functions thought to be regulated by its activity. Perhaps as notable is the remarkable number of points of conflict concerning the role of SIRT1 in biological processes. For example, evidence exists suggesting that SIRT1 is a tumor suppressor, is an oncogene, or has no effect on oncogenesis. Similarly, SIRT1 is variably reported to induce, inhibit, or have no effect on autophagy. We believe that the resolution of many conflicting results is possible by considering recent reports indicating that SIRT1 is an important hub interacting with a complex network of proteins that collectively regulate a wide variety of biological processes including cancer and autophagy. A number of the interacting proteins are themselves hubs that, like SIRT1, utilize intrinsically disordered regions for their promiscuous interactions. Many studies investigating SIRT1 function have been carried out on cell lines carrying undetermined numbers of alterations to the proteins comprising the SIRT1 network or on inbred mouse strains carrying fixed mutations affecting some of these proteins. Thus, the effects of modulating SIRT1 amount and/or activity are importantly determined by the genetic background of the cell (or the inbred strain of mice), and the effects attributed to SIRT1 are synthetic with the background of mutations and epigenetic differences between cells and organisms. Work on mice carrying alterations to the Sirt1 gene suggests that the network in which SIRT1 functions plays an important role in mediating physiological adaptation to various sources of chronic stress such as calorie restriction and calorie overload. Whether the catalytic activity of SIRT1 and the nuclear concentration of the co-factor, NAD(+), are responsible for modulating this activity remains to be determined. However, the effect of modulating SIRT1 activity must be interpreted in the context of the cell or tissue under investigation. Indeed, for SIRT1, we argue that context is everything.
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Affiliation(s)
- Michael W McBurney
- Program in Cancer Therapeutics, Ottawa Hospital Research Institute ; Department of Medicine, University of Ottawa, Ottawa, ON, Canada
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96
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Fostini AC, Girolomoni G, Tessari G. Prurigo nodularis: an update on etiopathogenesis and therapy. J DERMATOL TREAT 2013; 24:458-62. [PMID: 23767411 DOI: 10.3109/09546634.2013.814759] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Prurigo nodularis (PN) is a chronic, highly pruritic condition characterized by the presence of hyperkeratotic, excoriated, pruritic papules and nodules, with a tendency to symmetrical distribution. No reliable data exist about incidence and prevalence of PN in the general population, but it seems to be more frequent and more intense in females. PN may be associated with many dermatological and non-dermatological comorbidities, including psychiatric disease. Recent findings suggest a neuropathic origin of PN, with alterations in the dermal and epidermal small diameter nerve fibers. PN may have a tremendous impact on the quality of life, and few effective treatment options are available. Few randomized controlled trials (RCT) on the therapy of PN are available, demonstrating the efficacy of phototherapy alone or with psoralen, and of topical calcipotriol and topical steroids in occlusive medications. Thalidomide may be effective, but no RCT are available and its use is impractical due to the unfavorable safety profile. Gabapentin, pregabalin and the neurokinin receptor 1 antagonist, aprepitant, seem also to be effective in the therapy of PN, but RCTs are still lacking.
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Affiliation(s)
- Anna Chiara Fostini
- Department of Medicine, Section of Dermatology and Venereology, University of Verona , Verona , Italy
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97
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Mühl H, Scheiermann P, Bachmann M, Härdle L, Heinrichs A, Pfeilschifter J. IL-22 in tissue-protective therapy. Br J Pharmacol 2013; 169:761-71. [PMID: 23530726 PMCID: PMC3687657 DOI: 10.1111/bph.12196] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Revised: 01/13/2013] [Accepted: 02/12/2013] [Indexed: 12/14/2022] Open
Abstract
IL-22, a member of the IL-10 cytokine family, has recently gained significant attention as a protective agent in murine models of diseases driven by epithelial injury. Like its biochemical and functional sibling IL-10, IL-22 elicits cellular activation primarily by engaging the STAT3 signalling pathway. Exclusively produced by leukocytes, but targeting mostly cells of epithelial origin, IL-22 has been proposed as a specialized cytokine messenger acting between leukocytic and non-leukocytic cell compartments. A lack of response in leukocytes to IL-22 mirrors tightly controlled IL-22 receptor expression and probably explains the apparent lack of instant adverse effects after systemic IL-22 administration to mice. Anti-apoptotic, pro-proliferative and pro-regenerative characteristics the major biological properties of this cytokine. Specifically, application of IL-22 is associated with tissue protection and/or regeneration in murine models of infection/microbe-driven inflammation at host/environment interfaces, ventilator-induced lung injury, pancreatitis and liver damage. Overall, preclinical studies would support therapeutic administration of seemingly well-tolerated recombinant IL-22 for treatment of an array of acute diseases manifested in epithelial tissues. However, the feasibility of prolonged administration of this cytokine is expected to be restricted by the tumourigenic potential of the IL-22/STAT3 axis. IL-22, moreover, apparently displays an inherent context-specific capacity to amplify distinct aspects of autoimmune inflammation. Here, the prospects, expectations and restrictions of IL-22 administration in tissue-protective therapy are discussed.
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MESH Headings
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/adverse effects
- Anti-Inflammatory Agents, Non-Steroidal/metabolism
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
- Apoptosis/drug effects
- Cell Proliferation/drug effects
- Disease Models, Animal
- Drugs, Investigational/adverse effects
- Drugs, Investigational/metabolism
- Drugs, Investigational/pharmacology
- Drugs, Investigational/therapeutic use
- Hepatic Stellate Cells/drug effects
- Hepatic Stellate Cells/immunology
- Hepatic Stellate Cells/metabolism
- Humans
- Interleukins/adverse effects
- Interleukins/genetics
- Interleukins/metabolism
- Interleukins/therapeutic use
- MAP Kinase Signaling System/drug effects
- Mucous Membrane/drug effects
- Mucous Membrane/immunology
- Mucous Membrane/metabolism
- Protective Agents/adverse effects
- Protective Agents/metabolism
- Protective Agents/pharmacology
- Protective Agents/therapeutic use
- Receptors, Interleukin/agonists
- Receptors, Interleukin/metabolism
- Recombinant Proteins/adverse effects
- Recombinant Proteins/metabolism
- Recombinant Proteins/pharmacology
- Recombinant Proteins/therapeutic use
- Regeneration/drug effects
- STAT3 Transcription Factor/agonists
- STAT3 Transcription Factor/metabolism
- Interleukin-22
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Affiliation(s)
- Heiko Mühl
- pharmazentrum frankfurt/ZAFES, University Hospital, Goethe University Frankfurt, Frankfurt am Main, Germany.
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98
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Madonna S, Scarponi C, Doti N, Carbone T, Cavani A, Scognamiglio PL, Marasco D, Albanesi C. Therapeutical potential of a peptide mimicking the SOCS1 kinase inhibitory region in skin immune responses. Eur J Immunol 2013; 43:1883-95. [DOI: 10.1002/eji.201343370] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/08/2013] [Accepted: 04/12/2013] [Indexed: 01/09/2023]
Affiliation(s)
- Stefania Madonna
- Laboratory of Experimental Immunology; Istituto Dermopatico dell'Immacolata (IDI)-IRCCS; Rome; Italy
| | - Claudia Scarponi
- Laboratory of Experimental Immunology; Istituto Dermopatico dell'Immacolata (IDI)-IRCCS; Rome; Italy
| | - Nunzianna Doti
- Institute of Biostructures and Bioimaging, CNR; Naples; Italy
| | - Teresa Carbone
- Laboratory of Experimental Immunology; Istituto Dermopatico dell'Immacolata (IDI)-IRCCS; Rome; Italy
| | - Andrea Cavani
- Laboratory of Experimental Immunology; Istituto Dermopatico dell'Immacolata (IDI)-IRCCS; Rome; Italy
| | | | | | - Cristina Albanesi
- Laboratory of Experimental Immunology; Istituto Dermopatico dell'Immacolata (IDI)-IRCCS; Rome; Italy
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99
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Scuto A, Kirschbaum M, Buettner R, Kujawski M, Cermak JM, Atadja P, Jove R. SIRT1 activation enhances HDAC inhibition-mediated upregulation of GADD45G by repressing the binding of NF-κB/STAT3 complex to its promoter in malignant lymphoid cells. Cell Death Dis 2013; 4:e635. [PMID: 23681230 PMCID: PMC3674366 DOI: 10.1038/cddis.2013.159] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Revised: 03/29/2013] [Accepted: 04/03/2013] [Indexed: 12/31/2022]
Abstract
We explored the activity of SIRT1 activators (SRT501 and SRT2183) alone and in combination with panobinostat in a panel of malignant lymphoid cell lines in terms of biological and gene expression responses. SRT501 and SRT2183 induced growth arrest and apoptosis, concomitant with deacetylation of STAT3 and NF-κB, and reduction of c-Myc protein levels. PCR arrays revealed that SRT2183 leads to increased mRNA levels of pro-apoptosis and DNA-damage-response genes, accompanied by accumulation of phospho-H2A.X levels. Next, ChIP assays revealed that SRT2183 reduces the DNA-binding activity of both NF-κB and STAT3 to the promoter of GADD45G, which is one of the most upregulated genes following SRT2183 treatment. Combination of SRT2183 with panobinostat enhanced the anti-growth and anti-survival effects mediated by either compound alone. Quantitative-PCR confirmed that the panobinostat in combination with SRT2183, SRT501 or resveratrol leads to greater upregulation of GADD45G than any of the single agents. Panobinostat plus SRT2183 in combination showed greater inhibition of c-Myc protein levels and phosphorylation of H2A.X, and increased acetylation of p53. Furthermore, EMSA revealed that NF-κB binds directly to the GADD45G promoter, while STAT3 binds indirectly in complexes with NF-κB. In addition, the binding of NF-κB/STAT3 complexes to the GADD45G promoter is inhibited following panobinostat, SRT501 or resveratrol treatment. Moreover, the combination of panobinostat with SRT2183, SRT501 or resveratrol induces a greater binding repression than either agent alone. These data suggest that STAT3 is a corepressor with NF-κB of the GADD45G gene and provides in vitro proof-of-concept for the combination of HDACi with SIRT1 activators as a potential new therapeutic strategy in lymphoid malignancies.
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Affiliation(s)
- A Scuto
- Molecular Medicine, Beckman Research Institute, City of Hope Comprehensive Cancer Center, Duarte, CA 91010, USA.
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Gardner PJ, Joshi L, Lee RWJ, Dick AD, Adamson P, Calder VL. SIRT1 activation protects against autoimmune T cell-driven retinal disease in mice via inhibition of IL-2/Stat5 signaling. J Autoimmun 2013; 42:117-29. [PMID: 23395551 DOI: 10.1016/j.jaut.2013.01.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 01/09/2013] [Accepted: 01/13/2013] [Indexed: 01/01/2023]
Abstract
Sirtuins are a mammalian family of NAD(+)-dependent histone deacetylases that regulate cell function and survival as well as regulating cell responses under inflammatory conditions. SIRT1 activator treatment in vitro using mouse pLN cells, normal human and ocular Behçet's disease donor PBMC resulted in suppressed T cell proliferation and pro-inflammatory cytokine production. Our data suggest a novel mechanism by which SIRT1 activators contribute to suppression of T cell proliferation by both down regulating STAT5A/B expression and suppression of pSTAT5A/B signaling in response to IL-2. Experimental autoimmune uveoretinitis (EAU) in B10.RIII mice is an antigen-specific cell-mediated model of human intra-ocular inflammatory disease. Infiltrating CD4(+) T cells in the retina secrete both IFN-γ and IL-17 and are accompanied by inflammatory granulocytes and macrophages which together result in retinal destruction. Oral SIRT1 activator treatment administered to EAU mice suppressed disease with an accompanying reduction in retinal leukocytic infiltrate, suppressed antigen-specific T cell responses and marked suppression of innate and adaptive pro-inflammatory cytokine production in the eye including IL-6, IL-17A and IFN-γ. In vivo SIRT1 activator treatment also suppressed production of IL-17A, IL-17F, IL-6, TGFβ and IL-22 by pLN cells. Oral SIRT1 activator treatment administered to mice during the efferent phase (days7-14) of EAU was effective at suppressing disease. These observations demonstrate that SIRT1 activation is anti-inflammatory in nature and future targeted activation of SIRT1 shows promise as a potential treatment for non-infectious intra-ocular disorders such as uveitis associated with Behçets disease.
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Affiliation(s)
- Peter J Gardner
- Department of Genetics, UCL Institute of Ophthalmology, London EC1V 9EL, UK.
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