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Sun ND, Carr AR, Krogman EN, Chawla Y, Zhong J, Guttormson MC, Chan M, Hsu MA, Dong H, Bogunovic D, Pandey A, Rogers LM, Ting AT. TBK1 and IKKε protect target cells from IFNγ-mediated T cell killing via an inflammatory apoptotic mechanism. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.08.06.606693. [PMID: 39149268 PMCID: PMC11326184 DOI: 10.1101/2024.08.06.606693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 08/17/2024]
Abstract
Cytotoxic T cells produce interferon gamma (IFNγ), which plays a critical role in anti-microbial and anti-tumor responses. However, it is not clear whether T cell-derived IFNγ directly kills infected and tumor target cells, and how this may be regulated. Here, we report that target cell expression of the kinases TBK1 and IKKε regulate IFNγ cytotoxicity by suppressing the ability of T cell-derived IFNγ to kill target cells. In tumor targets lacking TBK1 and IKKε, IFNγ induces expression of TNFR1 and the Z-nucleic acid sensor, ZBP1, to trigger RIPK1-dependent apoptosis, largely in a target cell-autonomous manner. Unexpectedly, IFNγ, which is not known to signal to NFκB, induces hyperactivation of NFκB in TBK1 and IKKε double-deficient cells. TBK1 and IKKε suppress IKKα/β activity and in their absence, IFNγ induces elevated NFκB-dependent expression of inflammatory chemokines and cytokines. Apoptosis is thought to be non-inflammatory, but our observations demonstrate that IFNγ can induce an inflammatory form of apoptosis, and this is suppressed by TBK1 and IKKε. The two kinases provide a critical connection between innate and adaptive immunological responses by regulating three key responses: (1) phosphorylation of IRF3/7 to induce type I IFN; (2) inhibition of RIPK1-dependent death; and (3) inhibition of NFκB-dependent inflammation. We propose that these kinases evolved these functions such that their inhibition by pathogens attempting to block type I IFN expression would enable IFNγ to trigger apoptosis accompanied by an alternative inflammatory response. Our findings show that loss of TBK1 and IKKε in target cells sensitizes them to inflammatory apoptosis induced by T cell-derived IFNγ.
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Affiliation(s)
- Nicholas D. Sun
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Allison R. Carr
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Yogesh Chawla
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Jun Zhong
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA
| | | | - Mark Chan
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Michelle A. Hsu
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Haidong Dong
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
- Department of Urology, Mayo Clinic, Rochester, MN 55905, USA
| | - Dusan Bogunovic
- Columbia Center for Genetic Errors of Immunity, Department of Pediatrics, Columbia University Irving Medical Center, New York, NY 10032, USA
| | - Akhilesh Pandey
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN 55905, USA
- Center for Individualized Medicine, Mayo Clinic, Rochester, MN 55905, USA
| | - Laura M. Rogers
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
| | - Adrian T. Ting
- Department of Immunology, Mayo Clinic, Rochester, MN 55905, USA
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Jin Z, Dai Y, Ji Y, Peng X, Duan W, Ai J, Zhang H. Design, synthesis, and structure-activity relationship studies of 6,7-dihydro-5 H-pyrrolo[1,2- b][1,2,4]triazole derivatives as necroptosis inhibitors. RSC Med Chem 2024; 15:2514-2526. [PMID: 39026642 PMCID: PMC11253868 DOI: 10.1039/d4md00265b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 05/17/2024] [Indexed: 07/20/2024] Open
Abstract
The development of necroptosis inhibitors has emerged as a promising strategy to effectively mitigate necroptosis-related inflammatory diseases, neurodegenerative diseases, and cancers. In this paper, we reported a series of 6,7-dihydro-5H-pyrrolo[1,2-b][1,2,4]triazole derivatives as potent necroptosis inhibitors. The representative compound 26 displayed potent anti-necroptotic activity in both human and mouse cellular assays and exhibited potent inhibitory activity against receptor-interacting protein kinase 1 (RIPK1). In vivo pharmacokinetic studies were performed to determine the oral exposure of compound 26. Finally, molecular docking elucidated that compound 26 could effectively bind to the allosteric pocket of RIPK1 and serve as a type III inhibitor. Taken together, our findings highlighted that compound 26 represented a promising lead compound for future necroptosis inhibitor development.
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Affiliation(s)
- Zechen Jin
- Small-Molecule Drug Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 China
| | - Yang Dai
- Cancer Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 China
| | - Yinchun Ji
- Cancer Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
| | - Xia Peng
- Cancer Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
| | - Wenhu Duan
- Small-Molecule Drug Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 China
- Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery Yantai Shandong 264117 China
| | - Jing Ai
- Cancer Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A Yuquan Road Beijing 100049 China
| | - Hefeng Zhang
- Small-Molecule Drug Research Center, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences 555 Zu Chong Zhi Road Shanghai 201203 China
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Qiu XN, Hong D, Shi ZR, Lu SY, Lai YX, Ren YL, Liu XT, Guo CP, Tan GZ, Wang LC. TNF-α promotes CXCL-1/8 production in keratinocytes by downregulating galectin-3 through NF-κB and hsa-miR-27a-3p pathway to contribute psoriasis development. Immunopharmacol Immunotoxicol 2023; 45:692-700. [PMID: 37358143 DOI: 10.1080/08923973.2023.2229510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 06/18/2023] [Indexed: 06/27/2023]
Abstract
OBJECTIVE Treatment with TNF-α inhibitors improve psoriasis with minimize/minor neutrophils infiltration and CXCL-1/8 expression in psoriatic lesions. However, the fine mechanism of TNF-α initiating psoriatic inflammation by tuning keratinocytes is unclear. Our previous research identified the deficiency of intracellular galectin-3 was sufficient to promote psoriasis inflammation characterized by neutrophil accumulation. This study aims to investigate whether TNF-α participated in psoriasis development through dysregulating galectin-3 expression. METHODS mRNA levels were assessed through quantitative real-time PCR. Flow cytometry was used to detect cell cycle/apoptosis. Western blot was used to evaluate the activation of the NF-κB signaling pathway. HE staining and immunochemistry were used to detect epidermal thickness and MPO expression, respectively. Specific small interfering RNA (siRNA) was used to knock down hsa-miR-27a-3p while plasmids transfection was used to overexpress galectin-3. Further, the multiMiR R package was utilized to predict microRNA-target interaction. RESULTS AND DISCUSSION We found that TNF-α stimulation altered cell proliferation and differentiation and promoted the production of psoriasis-related inflammatory mediators along with the inhibition of galectin-3 expression in keratinocytes. Supplement of galectin-3 could counteract the rise of CXCL-1/8 but not the other phenotypes of keratinocytes induced by TNF-α. Mechanistically, inhibition of the NF-κB signaling pathway could counteract the decrease of galectin-3 and the increase of hsa-miR-27a-3p expression whereas silence of hsa-miR-27a-3p could counteract the decrease of galectin-3 expression induced by TNF-α treatment in keratinocytes. Intradermal injection of murine anti-CXCL-2 antibody greatly alleviated imiquimod-induced psoriasis-like dermatitis. CONCLUSION TNF-α initiates psoriatic inflammation by increasing CXCL-1/8 in keratinocytes mediated by the axis of NF-κB-hsa-miR-27a-3p-galectin-3 pathway.
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Affiliation(s)
- Xiao-Nan Qiu
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Dan Hong
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhen-Rui Shi
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Si-Yao Lu
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yu-Xian Lai
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Yan-Ling Ren
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiu-Ting Liu
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Chi-Peng Guo
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Guo-Zhen Tan
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Liang-Chun Wang
- Department of Dermatology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Chun N, Ang RL, Chan M, Fairchild RL, Baldwin WM, Horwitz JK, Gelles JD, Chipuk JE, Kelliher MA, Pavlov VI, Li Y, Homann D, Heeger PS, Ting AT. T cell-derived tumor necrosis factor induces cytotoxicity by activating RIPK1-dependent target cell death. JCI Insight 2021; 6:148643. [PMID: 34752416 PMCID: PMC8783689 DOI: 10.1172/jci.insight.148643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 11/03/2021] [Indexed: 12/31/2022] Open
Abstract
TNF ligation of TNF receptor 1 (TNFR1) promotes either inflammation and cell survival by (a) inhibiting RIPK1's death-signaling function and activating NF-κB or (b) causing RIPK1 to associate with the death-inducing signaling complex to initiate apoptosis or necroptosis. The cellular source of TNF that results in RIPK1-dependent cell death remains unclear. To address this, we employed in vitro systems and murine models of T cell-dependent transplant or tumor rejection in which target cell susceptibility to RIPK1-dependent cell death could be genetically altered. We show that TNF released by T cells is necessary and sufficient to activate RIPK1-dependent cell death in target cells and thereby mediate target cell cytolysis independently of T cell frequency. Activation of the RIPK1-dependent cell death program in target cells by T cell-derived TNF accelerates murine cardiac allograft rejection and synergizes with anti-PD1 administration to destroy checkpoint blockade-resistant murine melanoma. Together, the findings uncover a distinct immunological role for TNF released by cytotoxic effector T cells following cognate interactions with their antigenic targets. Manipulating T cell TNF and/or target cell susceptibility to RIPK1-dependent cell death can be exploited to either mitigate or augment T cell-dependent destruction of allografts and malignancies to improve outcomes.
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Affiliation(s)
- Nicholas Chun
- Department of Medicine and Translational Transplant Research Center and,Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Rosalind L. Ang
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Mark Chan
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Immunology, Mayo Clinic, Rochester, Minnesota, USA
| | - Robert L. Fairchild
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, Ohio, USA
| | - William M. Baldwin
- Department of Inflammation and Immunity, Cleveland Clinic, Cleveland, Ohio, USA
| | - Julian K. Horwitz
- Department of Medicine and Translational Transplant Research Center and,Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jesse D. Gelles
- Graduate School of Biomedical Sciences and,Tisch Cancer Institute and the Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Jerry Edward Chipuk
- Tisch Cancer Institute and the Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Michelle A. Kelliher
- Department of Molecular, Cell and Cancer Biology, University of Massachusetts Medical School, Worcester, Massachusetts, USA
| | - Vasile I. Pavlov
- Department of Medicine and Translational Transplant Research Center and,Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Yansui Li
- Department of Medicine and Translational Transplant Research Center and,Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Dirk Homann
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Diabetes, Obesity & Metabolism Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Peter S. Heeger
- Department of Medicine and Translational Transplant Research Center and,Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Adrian T. Ting
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, New York, USA.,Department of Immunology, Mayo Clinic, Rochester, Minnesota, USA
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Ang RL, Chan M, Legarda D, Sundberg JP, Sun SC, Gillespie VL, Chun N, Heeger PS, Xiong H, Lira SA, Ting AT. Immune dysregulation in SHARPIN-deficient mice is dependent on CYLD-mediated cell death. Proc Natl Acad Sci U S A 2021; 118:e2001602118. [PMID: 34887354 PMCID: PMC8685717 DOI: 10.1073/pnas.2001602118] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2021] [Indexed: 12/31/2022] Open
Abstract
SHARPIN, together with RNF31/HOIP and RBCK1/HOIL1, form the linear ubiquitin chain assembly complex (LUBAC) E3 ligase that catalyzes M1-linked polyubiquitination. Mutations in RNF31/HOIP and RBCK/HOIL1 in humans and Sharpin in mice lead to autoinflammation and immunodeficiency, but the mechanism underlying the immune dysregulation remains unclear. We now show that the phenotype of the Sharpincpdm/cpdm mice is dependent on CYLD, a deubiquitinase previously shown to mediate removal of K63-linked polyubiquitin chains. Dermatitis, disrupted splenic architecture, and loss of Peyer's patches in the Sharpincpdm/cpdm mice were fully reversed in Sharpincpdm/cpdm Cyld-/- mice. We observed enhanced association of RIPK1 with the death-signaling Complex II following TNF stimulation in Sharpincpdm/cpdm cells, a finding dependent on CYLD since we observed reversal in Sharpincpdm/cpdm Cyld-/- cells. Enhanced RIPK1 recruitment to Complex II in Sharpincpdm/cpdm cells correlated with impaired phosphorylation of CYLD at serine 418, a modification reported to inhibit its enzymatic activity. The dermatitis in the Sharpincpdm/cpdm mice was also ameliorated by the conditional deletion of Cyld using LysM-cre or Cx3cr1-cre indicating that CYLD-dependent death of myeloid cells is inflammatory. Our studies reveal that under physiological conditions, TNF- and RIPK1-dependent cell death is suppressed by the linear ubiquitin-dependent inhibition of CYLD. The Sharpincpdm/cpdm phenotype illustrates the pathological consequences when CYLD inhibition fails.
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Affiliation(s)
- Rosalind L Ang
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029;
| | - Mark Chan
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
- Department of Immunology, Mayo Clinic, Rochester, MN 55905
| | - Diana Legarda
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | | | - Shao-Cong Sun
- Department of Immunology, MD Anderson Cancer Center, The University of Texas, Houston, TX 77030
| | - Virginia L Gillespie
- Center for Comparative Medicine and Surgery, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Nicholas Chun
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
- Department of Medicine, Translational Transplant Research Center, Recanati Miller Transplant Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Peter S Heeger
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
- Department of Medicine, Translational Transplant Research Center, Recanati Miller Transplant Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Huabao Xiong
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Sergio A Lira
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029
- Tisch Cancer Institute, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Adrian T Ting
- Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029;
- Department of Immunology, Mayo Clinic, Rochester, MN 55905
- Tisch Cancer Institute, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029
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6
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Abstract
Receptor-interacting serine/threonine-protein kinase 1 (RIPK1) has emerged as a key upstream regulator of cell death and inflammation. RIPK1-mediated signaling governs the outcome of signaling pathways initiated by tumor necrosis factor receptor 1 (TNFR1), Toll-like receptor 3 (TLR3), TLR4, retinoic acid-inducible gene 1 (RIG-I)/melanoma differentiation-associated protein 5 (MDA-5), and Z-binding protein 1 (ZBP1) by signaling for NF-κB activation, mitogen-associated protein kinase (MAPK) and interferon regulatory factor 3/7 (IRF3/7) phosphorylation, and cell death via apoptosis and necroptosis. Both cell death and inflammatory responses play a major role in controlling virus infections. Therefore, viruses have evolved multifaceted mechanisms to exploit host immune responses by targeting RIPK1. This review focuses on the current understanding of RIPK1-mediated inflammatory and cell death pathways and multiple mechanisms by which viruses manipulate these pathways by targeting RIPK1. We also discuss gaps in our knowledge regarding RIPK1-mediated signaling pathways and highlight potential avenues for future research.
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7
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Manes NP, Nita-Lazar A. Molecular Mechanisms of the Toll-Like Receptor, STING, MAVS, Inflammasome, and Interferon Pathways. mSystems 2021; 6:e0033621. [PMID: 34184910 PMCID: PMC8269223 DOI: 10.1128/msystems.00336-21] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pattern recognition receptors (PRRs) form the front line of defense against pathogens. Many of the molecular mechanisms that facilitate PRR signaling have been characterized in detail, which is critical for the development of accurate PRR pathway models at the molecular interaction level. These models could support the development of therapeutics for numerous diseases, including sepsis and COVID-19. This review describes the molecular mechanisms of the principal signaling interactions of the Toll-like receptor, STING, MAVS, and inflammasome pathways. A detailed molecular mechanism network is included as Data Set S1 in the supplemental material.
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Affiliation(s)
- Nathan P. Manes
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - Aleksandra Nita-Lazar
- Functional Cellular Networks Section, Laboratory of Immune System Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA
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8
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Li X, Wang Y, Wang Y, He X. MiR-141-3p ameliorates RIPK1-mediated necroptosis of intestinal epithelial cells in necrotizing enterocolitis. Aging (Albany NY) 2020; 12:18073-18083. [PMID: 32702669 PMCID: PMC7585103 DOI: 10.18632/aging.103608] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 06/09/2020] [Indexed: 01/24/2023]
Abstract
AIM To explore the effects of miR-141-3p on intestinal epithelial cells in necrotizing enterocolitis and the underlying mechanism. RESULTS The expression of miR-141-3p was significantly downregulated in serum samples of patients with NEC and LPS-treated Caco-2 cells. The in vitro assays showed that miR-141-3p mimics inhibited expression of IL-6 and TNF-α and reduced PI positive rate of the LPS-treated Caco-2 cells. Next, receptor interacting protein kinase 1 (RIPK1) was identified as the downstream molecule of miR-141-3p, and RIPK1 overexpression aggravated LPS-induced Caco-2 cell injury, which was ameliorated by miR-141-3p mimics. Finally, we found miR-141-3p mimics inhibited upregulation of necroptosis-related molecules and interaction of RIPK1 and RIPK3 in LPS-treated Caco-2 cells. CONCLUSION Our research indicated that miR-141-3p protected intestinal epithelial cells from LPS damage by suppressing RIPK1-mediated inflammation and necroptosis, providing an alternative perspective to explore the pathogenesis of NEC. METHODS Quantitative real time-polymerase chain reaction (qRT-PCR) was used to detect the expression of miR-141-3p in serum samples of participants and lipopolysaccharide (LPS)-treated Caco-2 cells. Cell Counting Kit-8 (CCK-8) assay, Propidium Iodide (PI) staining and detection of inflammatory cytokines were performed to evaluate the role of miR-141-3p in LPS-treated Caco-2 cells. TargetScanHuman database and luciferase reporter gene assay were utilized to confirm the direct downstream molecule of miR-141-3p. Western blot analysis was used to explore the mechanism.
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Affiliation(s)
- Xiang Li
- Department of Pediatrics, The Second Children and Women’s Healthcare of Jinan City, Jinan, Shandong Province, China
| | - Ying Wang
- Department of Pediatrics, The Second Children and Women’s Healthcare of Jinan City, Jinan, Shandong Province, China
| | - Yijiang Wang
- Department of Pediatrics, The Second Children and Women’s Healthcare of Jinan City, Jinan, Shandong Province, China
| | - Xingbo He
- Department of Emergency, Jinan Children’s Hospital, Jinan, Shandong Province, China
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9
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Jin L, Liu P, Yin M, Zhang M, Kuang Y, Zhu W. RIPK1: A rising star in inflammatory and neoplastic skin diseases. J Dermatol Sci 2020; 99:146-151. [PMID: 32600738 DOI: 10.1016/j.jdermsci.2020.06.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 06/02/2020] [Accepted: 06/02/2020] [Indexed: 11/27/2022]
Abstract
Skin diseases bring great psychological and physical impacts on patients, however, a considerable number of skin diseases still lack effective treatments, such as psoriasis, systemic lupus erythematosus, melanoma and so on. Receptor-interacting serine threonine kinase 1 (RIPK1) plays an important role in cell death, especially necroptosis, associated with inflammation and tumor. As many molecules modulate the ubiquitination of RIPK1, disruption of this checkpoint can lead to skin diseases, which can be ameliorated by RIPK1 inhibitors. This review will focus on the molecular mechanism of RIPK1 activation in inflammation as well as the current knowledges on the contribution of RIPK1 in skin diseases.
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Affiliation(s)
- Liping Jin
- Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Panpan Liu
- Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Mingzhu Yin
- Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Mi Zhang
- Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Yehong Kuang
- Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China.
| | - Wu Zhu
- Hunan Engineering Research Center of Skin Health and Disease, Xiangya Hospital, Central South University, Changsha, China.
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