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Hu S, Zhu Y, Yu S, Guo Y, Wang Y, Lv M, Bai W, Ma P. Osteogenic effect and mechanism of IL-10 in diabetic rat jaw defect mode. Oral Dis 2024; 30:2695-2707. [PMID: 37551796 DOI: 10.1111/odi.14707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 06/30/2023] [Accepted: 07/24/2023] [Indexed: 08/09/2023]
Abstract
OBJECTIVE The aim of this study was to investigate the effect of IL-10 on the phenotype polarization of macrophages and osteogenesis in diabetes mellitus type 2 (T2DM) rat jaw defects. METHODS Lipopolysaccharide (LPS) and interleukin-10 (IL-10) were chosen to induce the polarization of macrophages. In vitro assessment included wound-healing assay, western blotting, and alizarin red staining after co-culture of the bone marrow-derived mesenchymal stem cells (BMSCs) and induced macrophages. For in vivo study, IL-10 was loaded on GelMA-Heparin and applied to bone defects of the alveolar ridge in diabetic rats, while Bio-Oss Collagen, simple GelMA-Heparin, and blank control groups were set for contrast experiment. The mandibles of rats were processed for micro-computed tomography, histology, and immunohistochemistry 1 week and 4 weeks after the operation. RESULTS IL-10 induced expression of arginase 1, TGF-β1, EGR2, and Mannose Receptor (CD206), whereas LPS induced expression of iNOS, TNF-α, IL-6, CD80. The BMSCs co-cultured with macrophages induced by IL-10 showed increased migration, osteogenic differentiation, and mineralization in vitro. Notably, the IL-10-laden GelMA-Heparin group showed quicker new bone formation and a higher M2/M1 ratio of macrophages in the jawbone defect area compared with the control groups. CONCLUSIONS IL-10 can stably induce macrophages to M2 type, thereby influencing BMSCs and improving the osteogenesis of jaw bone defects.
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Affiliation(s)
- Sitong Hu
- Implant Department, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Yihui Zhu
- Dental Department, Beijing Shunyi District Hospital, Beijing, China
| | - Shujia Yu
- Implant Department, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Yanchuan Guo
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Yihu Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China
| | - Menghao Lv
- Implant Department, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Wei Bai
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
| | - Pan Ma
- Implant Department, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
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2
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Barhoumi T, Mansour FA, Jalouli M, Alamri HS, Ali R, Harrath AH, Aljumaa M, Boudjelal M. Angiotensin II modulates THP-1-like macrophage phenotype and inflammatory signatures via angiotensin II type 1 receptor. Front Cardiovasc Med 2023; 10:1129704. [PMID: 37692050 PMCID: PMC10485254 DOI: 10.3389/fcvm.2023.1129704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Accepted: 06/30/2023] [Indexed: 09/12/2023] Open
Abstract
Angiotensin II (Ang II) is a major component of the renin-angiotensin or renin-angiotensin-aldosterone system, which is the main element found to be involved in cardiopathology. Recently, long-term metabolomics studies have linked high levels of angiotensin plasma to inflammatory conditions such as coronary heart disease, obesity, and type 2 diabetes. Monocyte/macrophage cellular function and phenotype orchestrate the inflammatory response in various pathological conditions, most notably cardiometabolic disease. An activation of the Ang II system is usually associated with inflammation and cardiovascular disease; however, the direct effect on monocyte/macrophages has still not been well elucidated. Herein, we have evaluated the cellular effects of Ang II on THP-1-derived macrophages. Ang II stimulated the expression of markers involved in monocyte/macrophage cell differentiation (e.g., CD116), as well as adhesion, cell-cell interaction, chemotaxis, and phagocytosis (CD15, CD44, CD33, and CD49F). Yet, Ang II increased the expression of proinflammatory markers (HLA-DR, TNF-α, CD64, CD11c, and CD38) and decreased CD206 (mannose receptor), an M2 marker. Moreover, Ang II induced cytosolic calcium overload, increased reactive oxygen species, and arrested cells in the G1 phase. Most of these effects were induced via the angiotensin II type 1 receptor (AT1R). Collectively, our results provide new evidence in support of the effect of Ang II in inflammation associated with cardiometabolic diseases.
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Affiliation(s)
- Tlili Barhoumi
- Medical Research Core Facility and Platforms (MRCFP), King Abdullah International Medical Research Center/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), King Abdulaziz Medical City (KAMC), NGHA, Riyadh, Saudi Arabia
| | - Fatmah A. Mansour
- Medical Research Core Facility and Platforms (MRCFP), King Abdullah International Medical Research Center/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), King Abdulaziz Medical City (KAMC), NGHA, Riyadh, Saudi Arabia
| | - Maroua Jalouli
- Department of Biology, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia
| | - Hassan S. Alamri
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences/King Abdullah International Medical Research Center, Riyadh, Saudi Arabia
| | - Rizwan Ali
- Medical Research Core Facility and Platforms (MRCFP), King Abdullah International Medical Research Center/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), King Abdulaziz Medical City (KAMC), NGHA, Riyadh, Saudi Arabia
| | - Abdel Halim Harrath
- Department of Zoology, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Maha Aljumaa
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh, Saudi Arabia
| | - Mohamed Boudjelal
- Medical Research Core Facility and Platforms (MRCFP), King Abdullah International Medical Research Center/King Saud bin Abdulaziz University for Health Sciences (KSAU-HS), King Abdulaziz Medical City (KAMC), NGHA, Riyadh, Saudi Arabia
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3
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Huang Z, Chen Y, Yang C, Ma B, Guo S, Zhang J, Chen N, Umar T, Yin B, Deng G. Enhanced expression of miR-26a ameliorates lipopolysaccharide-induced endometritis by targeting MAP3K8 to inactivate MAPK signaling pathway. J Reprod Immunol 2022; 154:103751. [PMID: 36252394 DOI: 10.1016/j.jri.2022.103751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/08/2022] [Accepted: 09/16/2022] [Indexed: 12/14/2022]
Abstract
Endometritis is a severe postpartum inflammatory disease that puts cows' reproductive health at risk and causes the dairy industry to suffer significant financial losses. The present study aimed to investigate the regulatory role of miR‑26a in LPS‑induced bovine endometrial epithelial cells (bEECs) and the implication for endometritis. Here, we found inflammatory cell infiltration and destruction of endometrial structure in cow uterus, and dramatic increase in myeloperoxidase (MPO) activity and upregulation of pro-inflammatory cytokines (IL-1β, TNF-α, and IL-6) in endometritis. Meanwhile, miR-26a was down-regulated, but MAP3K8 was increased in the uterine tissue of endometritis. Similarly, the expression of miR-26a was significantly decreased in LPS-stimulated bEECs, while MAP3K8 was risen. In addition, we further verified that MAP3K8 was a target of miR-26a by dual-luciferase reporter assay. Under LPS stress, over-expressing miR-26a markedly decreased MAP3K8 expression levels, along with the reduced expression of inflammatory factors, such as IL-1β, TNF-α and IL-6, whereas this effect was countered by the inhibition of miR-26a. Furthermore, we demonstrated that miR-26a overexpression prevented the MAPK pathway from being activated by targeting MAP3K8. Then we carried out experiments in LPS-stimulated mice uterus to expound that MAP3K8 was essential in endometritis development, which further confirmed the reliability of the above results. In conclusion, overexpression of miR-26a effectively inhibited the expression of MAP3K8 in LPS-induced bEECs and thereby partially suppressed the activation of MAPK signaling pathway. miR-26a and MAP3K8 may be a promising biomarker and therapeutic target for dairy cow endometritis.
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Affiliation(s)
- Zhi Huang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Yu Chen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Cheng Yang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Bin Ma
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Shuai Guo
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Jinxin Zhang
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Nuoer Chen
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Talha Umar
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Baoyi Yin
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China
| | - Ganzhen Deng
- Department of Clinical Veterinary Medicine, College of Veterinary Medicine, Huazhong Agricultural University, Wuhan 430070, People's Republic of China.
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Lucas RM, Luo L, Stow JL. ERK1/2 in immune signalling. Biochem Soc Trans 2022; 50:1341-1352. [PMID: 36281999 PMCID: PMC9704528 DOI: 10.1042/bst20220271] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 10/07/2022] [Accepted: 10/10/2022] [Indexed: 07/30/2023]
Abstract
Extracellular signal-related kinases 1 and 2 (ERK1/2) are the final components of the mitogen-activated protein kinase (MAPK) phosphorylation cascade, an integral module in a diverse array of signalling pathways for shaping cell behaviour and fate. More recently, studies have shown that ERK1/2 plays an essential role downstream of immune receptors to elicit inflammatory gene expression in response to infection and cell or tissue damage. Much of this work has studied ERK1/2 activation in Toll-like receptor (TLR) pathways, providing mechanistic insights into its recruitment, compartmentalisation and activation in cells of the innate immune system. In this review, we summarise the typical activation of ERK1/2 in growth factor receptor pathways before discussing its known roles in immune cell signalling with a focus downstream of TLRs. We examine emerging research uncovering evidence of dysfunctional ERK1/2 signalling in inflammatory diseases and discuss the potential therapeutic benefit of targeting ERK1/2 pathways in inflammation.
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Affiliation(s)
- Richard M. Lucas
- Institute for Molecular Bioscience (IMB) and Centre for Inflammation and Disease Research, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Lin Luo
- Institute for Molecular Bioscience (IMB) and Centre for Inflammation and Disease Research, The University of Queensland, St Lucia, QLD 4072, Australia
| | - Jennifer L. Stow
- Institute for Molecular Bioscience (IMB) and Centre for Inflammation and Disease Research, The University of Queensland, St Lucia, QLD 4072, Australia
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5
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TPL2 kinase expression is regulated by the p38γ/p38δ-dependent association of aconitase-1 with TPL2 mRNA. Proc Natl Acad Sci U S A 2022; 119:e2204752119. [PMID: 35994673 PMCID: PMC9436348 DOI: 10.1073/pnas.2204752119] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
p38γ and p38δ (p38γ/p38δ) regulate inflammation, in part by controlling tumor progression locus 2 (TPL2) expression in myeloid cells. Here, we demonstrate that TPL2 protein levels are dramatically reduced in p38γ/p38δ-deficient (p38γ/δ-/-) cells and tissues without affecting TPL2 messenger ribonucleic acid (mRNA) expression. We show that p38γ/p38δ posttranscriptionally regulates the TPL2 amount at two different levels. p38γ/p38δ interacts with the TPL2/A20 Binding Inhibitor of NF-κB2 (ABIN2)/Nuclear Factor κB1p105 (NF-κB1p105) complex, increasing TPL2 protein stability. Additionally, p38γ/p38δ regulates TPL2 mRNA translation by modulating the repressor function of TPL2 3' Untranslated region (UTR) mediated by its association with aconitase-1 (ACO1). ACO1 overexpression in wild-type cells increases the translational repression induced by TPL2 3'UTR and severely decreases TPL2 protein levels. p38δ binds to ACO1, and p38δ expression in p38γ/δ-/- cells fully restores TPL2 protein to wild-type levels by reducing the translational repression of TPL2 mRNA. This study reveals a unique mechanism of posttranscriptional regulation of TPL2 expression, which given its central role in innate immune response, likely has great relevance in physiopathology.
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6
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Wyatt KD, Sarr D, Sakamoto K, Watford WT. Influenza-induced Tpl2 expression within alveolar epithelial cells is dispensable for host viral control and anti-viral immunity. PLoS One 2022; 17:e0262832. [PMID: 35051238 PMCID: PMC8775564 DOI: 10.1371/journal.pone.0262832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 01/05/2022] [Indexed: 01/22/2023] Open
Abstract
Tumor progression locus 2 (Tpl2) is a serine/threonine kinase that regulates the expression of inflammatory mediators in response to Toll-like receptors (TLR) and cytokine receptors. Global ablation of Tpl2 leads to severe disease in response to influenza A virus (IAV) infection, characterized by respiratory distress, and studies in bone marrow chimeric mice implicated Tpl2 in non-hematopoietic cells. Lung epithelial cells are primary targets and replicative niches of influenza viruses; however, the specific regulation of antiviral responses by Tpl2 within lung epithelial cells has not been investigated. Herein, we show that Tpl2 is basally expressed in primary airway epithelial cells and that its expression increases in both type I and type II airway epithelial cells (AECI and AECII) in response to influenza infection. We used Nkx2.1-cre to drive Tpl2 deletion within pulmonary epithelial cells to delineate epithelial cell-specific functions of Tpl2 during influenza infection in mice. Although modest increases in morbidity and mortality were attributed to cre-dependent deletion in lung epithelial cells, no alterations in host cytokine production or lung pathology were observed. In vitro, Tpl2 inhibition within the type I airway epithelial cell line, LET1, as well as genetic ablation in primary airway epithelial cells did not alter cytokine production. Overall, these findings establish that Tpl2-dependent defects in cells other than AECs are primarily responsible for the morbidity and mortality seen in influenza-infected mice with global Tpl2 ablation.
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Affiliation(s)
- Kara D. Wyatt
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Demba Sarr
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, United States of America
| | - Kaori Sakamoto
- Department of Pathology, University of Georgia, Athens, Georgia, United States of America
| | - Wendy T. Watford
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, United States of America
- * E-mail:
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7
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Lucas RM, Liu L, Curson JEB, Koh YWH, Tuladhar N, Condon ND, Das Gupta K, Burgener SS, Schroder K, Ingley E, Sweet MJ, Stow JL, Luo L. SCIMP is a spatiotemporal transmembrane scaffold for Erk1/2 to direct pro-inflammatory signaling in TLR-activated macrophages. Cell Rep 2021; 36:109662. [PMID: 34496234 DOI: 10.1016/j.celrep.2021.109662] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 07/12/2021] [Accepted: 08/13/2021] [Indexed: 02/06/2023] Open
Abstract
Immune cells are armed with Toll-like receptors (TLRs) for sensing and responding to pathogens and other danger cues. The role of extracellular-signal-regulated kinases 1/2 (Erk1/2) in TLR signaling remains enigmatic, with both pro- and anti-inflammatory functions described. We reveal here that the immune-specific transmembrane adaptor SCIMP is a direct scaffold for Erk1/2 in TLR pathways, with high-resolution, live-cell imaging revealing that SCIMP guides the spatial and temporal recruitment of Erk2 to membrane ruffles and macropinosomes for pro-inflammatory TLR4 signaling. SCIMP-deficient mice display defects in Erk1/2 recruitment to TLR4, c-Fos activation, and pro-inflammatory cytokine production, with these effects being phenocopied by Erk1/2 signaling inhibition. Our findings thus delineate a selective role for SCIMP as a key scaffold for the membrane recruitment of Erk1/2 kinase to initiate TLR-mediated pro-inflammatory responses in macrophages.
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Affiliation(s)
- Richard M Lucas
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Liping Liu
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - James E B Curson
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Yvette W H Koh
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Neeraj Tuladhar
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Nicholas D Condon
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kaustav Das Gupta
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Sabrina S Burgener
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Kate Schroder
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Evan Ingley
- Cell Signalling Group, Harry Perkins Institute of Medical Research and Centre for Medical Research, The University of Western Australia, Perth, WA 6009, Australia; Discipline of Medical, Molecular and Forensic Sciences, College of Science, Health, Engineering and Education, Murdoch University, Murdoch, WA 6150, Australia
| | - Matthew J Sweet
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Jennifer L Stow
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia.
| | - Lin Luo
- Institute for Molecular Bioscience (IMB) and IMB Centre for Inflammation and Disease Research, The University of Queensland, Brisbane, QLD 4072, Australia.
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8
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Chiang TI, Hung YY, Wu MK, Huang YL, Kang HY. TNIP2 mediates GRβ-promoted inflammation and is associated with severity of major depressive disorder. Brain Behav Immun 2021; 95:454-461. [PMID: 33932528 DOI: 10.1016/j.bbi.2021.04.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 04/22/2021] [Accepted: 04/26/2021] [Indexed: 11/17/2022] Open
Abstract
In depression, continual activation of the hypothalamic-pituitaryadrenal (HPA) axis with excess cortisol release leads to impair sensitivity of the glucocorticoid receptor (GR) and increase activity of the pro-inflammatory immune responses. Aberrant expression of GR has been associated with inflammation in patients with major depressive disorder (MDD). Our previous studies showed that the aberrant expression of TNFAIP3 gene, which encodes the NF-κB regulatory protein A20, TNFAIP3-associated proteins and Toll-like receptors (TLRs) are involved in inflammation-associated depression. However, the link between desensitization of GR actions and negative regulation of the TLRs-mediated inflammatory pathway in MDD is yet to be established. Here, we examined the association of depression severity, measured via the 17-item Hamilton Depression Rating Scale (HAMD-17), with the mRNA expression profiling of GRα, GRβ, TNFAIP3-interacting proteins (TNIP), including TNIP1, TNIP2, and TNIP3, and TNFAIP3-like proteins, such as cezanne1, cezanne2, trabid, and valosin-containing protein p97/p47 complex-interacting protein p135 (VCIP135), in monocytes from 69 patients with MDD and 42 healthy controls. Herein we found the mRNA expressions of GRβ and TNIP2 were significantly higher in monocytes from patients with MDD. Notably, TNIP2 level was positively correlated with the GRβ expression and severity of depression, as determined via Pearson's correlation analysis. Mechanistically, we demonstrated that overexpression of GRβ promotes the mRNA levels of TNIP2 and tumor necrosis factor alpha (TNF-α) in human monocytes. The promoting effect of GRβ on TNF-α expression was partially attenuated upon depletion of TNIP2, suggesting that TNIP2 was required for GRβ-mediated enhancement of TNF-α levels. Together, these results suggest that activation of GRβ/TNIP2/TNF-α axis may induce inflammation in MDD patients and targeting this newly identified pathway may help in the development of better therapeutic approaches to reduce the development of MDD.
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Affiliation(s)
- Ting-I Chiang
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yi-Yung Hung
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ming-Kung Wu
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Ya-Ling Huang
- Department of Psychiatry, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Hong-Yo Kang
- Graduate Institute of Clinical Medical Sciences, Chang Gung University, College of Medicine, Kaohsiung, Taiwan; Department of Obstetrics and Gynecology, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung, Taiwan.
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9
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Yang G, Cui M, Jiang W, Sheng J, Yang Y, Zhang X. Molecular switch in human diseases-disintegrin and metalloproteinases, ADAM17. Aging (Albany NY) 2021; 13:16859-16872. [PMID: 34182543 PMCID: PMC8266367 DOI: 10.18632/aging.203200] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Accepted: 05/18/2021] [Indexed: 01/01/2023]
Abstract
The ADAMs (a disintegrin and metalloproteinase) are a family of cell surface proteins with crucial roles in the regulation of cell adhesion, cell proliferation to migration, proteolysis and cell signaling transduction pathways. Among these enzymes, the ADAM17 shows significant effects in the “ectodomain shedding” of its substrates such as cytokines (e.g., tumor necrosis factor α, TNFα), growth factors (e.g., epidermal growth factor, EGF), adhesion proteins (e.g., L-selectin), and their receptors (e.g., IL-6R and TNFα). Several studies focus on the underlying molecular mechanisms of ADAM17 in diseased conditions. Here, we took several different approaches to elucidate the function of ADAM17, the participation of ADAM17 in several human diseases, and the potential as targeted therapy reagents. As more and more studies verify the miRNA-mediated expression variation of ADAM17, the specific regulation network of miRNAs and ADAM17 was exploited in this review as well.
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Affiliation(s)
- Guang Yang
- Jilin Provincial Key Laboratory on Molecular and Chemical Genetic, The Second Hospital of Jilin University, Changchun 130041, P.R. China
| | - Mengying Cui
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun 130041, P.R. China
| | - Weibo Jiang
- Department of Orthopaedic, The Second Hospital of Jilin University, Changchun 130041, P.R. China
| | - Jiyao Sheng
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun 130041, P.R. China
| | - Yongsheng Yang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun 130041, P.R. China
| | - Xuewen Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Hospital of Jilin University, Changchun 130041, P.R. China
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10
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Petrova T, Zhang J, Nanda SK, Figueras-Vadillo C, Cohen P. HOIL-1-catalysed ester-linked ubiquitylation restricts IL-18 signaling in cytotoxic T cells but promotes TLR signalling in macrophages. FEBS J 2021; 288:5909-5924. [PMID: 33932090 DOI: 10.1111/febs.15896] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/19/2021] [Accepted: 04/19/2021] [Indexed: 12/27/2022]
Abstract
The atypical E3 ligase HOIL-1 forms ester bonds between ubiquitin and serine/threonine residues in proteins, but the physiological roles of this unusual modification are unknown. We now report that IL-18 signalling leading to the production of interferon γ (IFNγ) and granulocyte-macrophage colony-stimulating factor (GM-CSF) is enhanced in cytotoxic T cells from knock-in mice expressing the E3 ligase-inactive HOIL-1[C458S] mutant, demonstrating that the formation of HOIL-1-catalysed ester-linked ubiquitin bonds restricts the activation of this pathway. We show that the interaction of IRAK2 with TRAF6 is required for IL-18-stimulated IFN-γ and GM-CSF production, and that the increased production of these cytokines in cytotoxic T cells from HOIL-1[C458S] mice correlates with an increase in both the number and size of the Lys63/Met1-linked hybrid ubiquitin chains attached to IRAK2 in these cells. In contrast, the secretion of IL-12 and IL-6 and the formation of il-12 and il-6 mRNA induced in bone marrow-derived macrophages (BMDMs) by prolonged stimulation with TLR-activating ligands that signal via myddosomes, which also requires the interaction of IRAK2 with TRAF6, were not increased but modestly reduced in HOIL-1[C458S] BMDM. The decreased production of these cytokines correlated with reduced ubiquitylation of IRAK2. Our results establish that changes in HOIL-1-catalysed ester-linked ubiquitylation can promote or reduce cytokine production depending on the ligand, receptor and immune cell and may be explained by differences in the ubiquitylation of IRAK2.
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Affiliation(s)
- Tsvetana Petrova
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life sciences, University of Dundee, UK
| | - Jiazhen Zhang
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life sciences, University of Dundee, UK
| | - Sambit K Nanda
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life sciences, University of Dundee, UK
| | - Clara Figueras-Vadillo
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life sciences, University of Dundee, UK
| | - Philip Cohen
- MRC Protein Phosphorylation and Ubiquitylation Unit, School of Life sciences, University of Dundee, UK
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11
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Erber LN, Luo A, Gong Y, Beeson M, Tu M, Tran P, Chen Y. Iron Deficiency Reprograms Phosphorylation Signaling and Reduces O-GlcNAc Pathways in Neuronal Cells. Nutrients 2021; 13:E179. [PMID: 33430126 PMCID: PMC7826960 DOI: 10.3390/nu13010179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 01/14/2023] Open
Abstract
Micronutrient sensing is critical for cellular growth and differentiation. Deficiencies in essential nutrients such as iron strongly affect neuronal cell development and may lead to defects in neuronal function that cannot be remedied by subsequent iron supplementation. To understand the adaptive intracellular responses to iron deficiency in neuronal cells, we developed and utilized a Stable Isotopic Labeling of Amino acids in Cell culture (SILAC)-based quantitative phosphoproteomics workflow. Our integrated approach was designed to comprehensively elucidate the changes in phosphorylation signaling under both acute and chronic iron-deficient cell models. In addition, we analyzed the differential cellular responses between iron deficiency and hypoxia (oxygen-deprived) in neuronal cells. Our analysis identified nearly 16,000 phosphorylation sites in HT-22 cells, a hippocampal-derived neuronal cell line, more than ten percent of which showed at least 2-fold changes in response to either hypoxia or acute/chronic iron deficiency. Bioinformatic analysis revealed that iron deficiency altered key metabolic and epigenetic pathways including the phosphorylation of proteins involved in iron sequestration, glutamate metabolism, and histone methylation. In particular, iron deficiency increased glutamine-fructose-6-phosphate transaminase (GFPT1) phosphorylation, which is a key enzyme in the glucosamine biosynthesis pathway and a target of 5' AMP-activated protein kinase (AMPK), leading to reduced GFPT1 enzymatic activity and consequently lower global O-GlcNAc modification in neuronal cells. Taken together, our analysis of the phosphoproteome dynamics in response to iron and oxygen deprivation demonstrated an adaptive cellular response by mounting post-translational modifications that are critical for intracellular signaling and epigenetic programming in neuronal cells.
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Affiliation(s)
- Luke N. Erber
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Ang Luo
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Yao Gong
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Montana Beeson
- Department of Pediatrics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (M.B.); (P.T.)
| | - Maolin Tu
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
| | - Phu Tran
- Department of Pediatrics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (M.B.); (P.T.)
| | - Yue Chen
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota at Twin Cities, Minneapolis, MN 55455, USA; (L.N.E.); (A.L.); (Y.G.); (M.T.)
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12
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Willmann EA, Pandurovic V, Jokinen A, Beckley D, Bohlson SS. Extracellular signal-regulated kinase 1/2 is required for complement component C1q and fibronectin dependent enhancement of Fcγ- receptor mediated phagocytosis in mouse and human cells. BMC Immunol 2020; 21:61. [PMID: 33317446 PMCID: PMC7734837 DOI: 10.1186/s12865-020-00393-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 12/02/2020] [Indexed: 11/25/2022] Open
Abstract
Background C1q is a soluble pattern recognition protein that regulates multiple leukocyte functions, and deficiency in C1q results in autoimmunity. C1q stimulates enhanced phagocytic function through multiple mechanisms including the rapid enhancement of Fcγ receptor (FcγR) -mediated phagocytosis. The molecular mechanism responsible for this rapid enhancement of phagocytic function is unknown. The purpose of this study was to investigate the molecular pathway required for C1q-dependent enhanced phagocytosis. Results Leukocyte associated immunoglobulin like receptor-1 (LAIR-1) is a receptor that mediates C1q-dependent activation of leukocytes; however, using LAIR-1 deficient mouse bone marrow derived macrophages (BMDM), we demonstrated that LAIR-1 was not required for C1q-dependent enhanced FcγR-mediated phagocytosis. A phospho-kinase array identified extracellular signal-regulated kinase (ERK) 1/2 as dysregulated following activation with C1q. Validation of the array in BMDM and the human monocyte cell line THP-1 demonstrated a decrease in basal ERK1/2 phosphorylation in C1q-stimulated cells compared to control cells. However, subsequent stimulation with immune complexes stimulated rapid upregulation of phosphorylation. The extracellular matrix protein fibronectin regulates enhanced phagocytic activity in macrophages similar to C1q, and both C1q and fibronectin-dependent enhanced phagocytosis required ERK1/2 since both were blocked by pharmacologic inhibition of ERK1/2. Furthermore, diminished C1q-dependent ERK1/2 phosphorylation was sustained after four-hour treatment with lipopolysaccharide and correlated with a significant reduction in TNFα production. Conclusions These data demonstrate that C1q and fibronectin utilize a similar ERK1/2-dependent mechanism for enhanced phagocytosis, which should lead to development of novel approaches to modulate C1q-dependent regulation of macrophage activation, inflammation and autoimmunity. Supplementary Information The online version contains supplementary material available at 10.1186/s12865-020-00393-6.
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Affiliation(s)
- Emily A Willmann
- Department of Microbiology and Immunology, Des Moines University, Des Moines, IA, USA
| | - Vesna Pandurovic
- Department of Microbiology and Immunology, Des Moines University, Des Moines, IA, USA
| | - Anna Jokinen
- Department of Microbiology and Immunology, Des Moines University, Des Moines, IA, USA
| | - Danielle Beckley
- Department of Microbiology and Immunology, Des Moines University, Des Moines, IA, USA
| | - Suzanne S Bohlson
- Department of Molecular Biology and Biochemistry, University of California, Irvine, CA, USA.
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13
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Abstract
Despite recent advances in the treatment of autoimmune and inflammatory diseases, unmet medical needs in some areas still exist. One of the main therapeutic approaches to alleviate dysregulated inflammation has been to target the activity of kinases that regulate production of inflammatory mediators. Small-molecule kinase inhibitors have the potential for broad efficacy, convenience and tissue penetrance, and thus often offer important advantages over biologics. However, designing kinase inhibitors with target selectivity and minimal off-target effects can be challenging. Nevertheless, immense progress has been made in advancing kinase inhibitors with desirable drug-like properties into the clinic, including inhibitors of JAKs, IRAK4, RIPKs, BTK, SYK and TPL2. This Review will address the latest discoveries around kinase inhibitors with an emphasis on clinically validated autoimmunity and inflammatory pathways. Unmet medical needs in the treatment of autoimmune and inflammatory diseases still exist. This Review discusses the activity of kinases that regulate production of inflammatory mediators and the recent advances in developing inhibitors to target such kinases.
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14
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The IκB-protein BCL-3 controls Toll-like receptor-induced MAPK activity by promoting TPL-2 degradation in the nucleus. Proc Natl Acad Sci U S A 2019; 116:25828-25838. [PMID: 31772019 PMCID: PMC6926074 DOI: 10.1073/pnas.1900408116] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
The NF-ĸB and mitogen-activated protein kinase (MAPK) pathways coordinate the cellular response to most immune stimuli. Toll-like (TLR) and TNF receptor activation of the MAPK pathway requires activation of the TPL-2 kinase. Active TPL-2 is an unstable, short-lived protein, which limits MAPK activity and controls inflammatory responses. Here we report the surprising discovery that active TPL-2 shuttles between the cytoplasm and the nucleus, where it is degraded by the proteasome. BCL-3, a nuclear regulator of NF-ĸB, promotes the nuclear localization and degradation of TPL-2 in order to limit MAPK activity and determines the amount of TLR ligand required to initiate an inflammatory response. Thus, the nucleus is a key site for the integrated regulation of NF-ĸB– and MAPK-driven inflammatory responses. Proinflammatory responses induced by Toll-like receptors (TLRs) are dependent on the activation of the NF-ĸB and mitogen-activated protein kinase (MAPK) pathways, which coordinate the transcription and synthesis of proinflammatory cytokines. We demonstrate that BCL-3, a nuclear IĸB protein that regulates NF-ĸB, also controls TLR-induced MAPK activity by regulating the stability of the TPL-2 kinase. TPL-2 is essential for MAPK activation by TLR ligands, and the rapid proteasomal degradation of active TPL-2 is a critical mechanism limiting TLR-induced MAPK activity. We reveal that TPL-2 is a nucleocytoplasmic shuttling protein and identify the nucleus as the primary site for TPL-2 degradation. BCL-3 interacts with TPL-2 and promotes its degradation by promoting its nuclear localization. As a consequence, Bcl3−/− macrophages have increased TPL-2 stability following TLR stimulation, leading to increased MAPK activity and MAPK-dependent responses. Moreover, BCL-3–mediated regulation of TPL-2 stability sets the MAPK activation threshold and determines the amount of TLR ligand required to initiate the production of inflammatory cytokines. Thus, the nucleus is a key site in the regulation of TLR-induced MAPK activity. BCL-3 links control of the MAPK and NF-ĸB pathways in the nucleus, and BCL-3–mediated TPL-2 regulation impacts on the cellular decision to initiate proinflammatory cytokine production in response to TLR activation.
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15
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Advancement in TPL2-regulated innate immune response. Immunobiology 2019; 224:383-387. [PMID: 30853309 DOI: 10.1016/j.imbio.2019.02.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/12/2019] [Accepted: 02/21/2019] [Indexed: 11/21/2022]
Abstract
Tumor progression locus 2 (TPL2) is a serine/threonine kinase that belongs to the MAP3K family. The activated TPL2 regulates the innate immune-relevant signaling pathways, such as ERK, JNK, and NF-κB, and the differentiation of immune cells, for example, CD4+ T and NK cells. Therefore, TPL2 plays a critical role in regulating the innate immune response. The present review summarizes the recent advancements in the TPL2-regulated innate immune response.
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16
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Minshawi F, White MRH, Muller W, Humphreys N, Jackson D, Campbell BJ, Adamson A, Papoutsopoulou S. Human TNF-Luc reporter mouse: A new model to quantify inflammatory responses. Sci Rep 2019; 9:193. [PMID: 30655563 PMCID: PMC6336827 DOI: 10.1038/s41598-018-36969-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 11/19/2018] [Indexed: 12/26/2022] Open
Abstract
Tumour necrosis factor (TNF) is a key cytokine during inflammatory responses and its dysregulation is detrimental in many inflammatory diseases, such as rheumatoid arthritis and inflammatory bowel disease. Here, we used a bacterial artificial chromosome (BAC) construct that expresses luciferase under the control of the human TNF locus to generate a novel transgenic mouse, the hTNF.LucBAC strain. In vitro stimulation of hTNF.LucBAC cells of different origin revealed a cell specific response to stimuli demonstrating the integrated construct's ability as a proxy for inflammatory gene response. Lipopolysaccharide was the most potent luciferase inducer in macrophages, while TNF was a strong activator in intestinal organoids. Lipopolysaccharide-induced luciferase activity in macrophages was downregulated by inhibitors of NF-κB pathway, as well as by Interleukin-10, a known anti-inflammatory cytokine. Moreover, the transgene-dependent luciferase activity showed a positive correlation to the endogenous murine soluble TNF secreted to the culture medium. In conclusion, the hTNF.LucBAC strain is a valuable tool for studying and screening molecules that target TNF synthesis and will allow further functional studies of the regulatory elements of the TNF locus.
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Affiliation(s)
- Faisal Minshawi
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom.,Department of Laboratory Medicine, Faculty of Applied Medical Science, Umm Al-Qura University, Makkah, Saudi Arabia
| | - Mike R H White
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Werner Muller
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Neil Humphreys
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Dean Jackson
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom
| | - Barry J Campbell
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GE, United Kingdom
| | - Antony Adamson
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom.
| | - Stamatia Papoutsopoulou
- Faculty of Biology, Medicine and Health, School of Biological Sciences, Manchester, M13 9PT, United Kingdom. .,Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Liverpool, L69 3GE, United Kingdom.
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17
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Nanda SK, Nagamori T, Windheim M, Amu S, Aviello G, Patterson-Kane J, Arthur JSC, Ley SC, Fallon P, Cohen P. ABIN2 Function Is Required To Suppress DSS-Induced Colitis by a Tpl2-Independent Mechanism. THE JOURNAL OF IMMUNOLOGY 2018; 201:3373-3382. [PMID: 30355787 DOI: 10.4049/jimmunol.1700614] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 09/19/2018] [Indexed: 12/16/2022]
Abstract
The A20-binding inhibitor of NF-κB 2 (ABIN2) interacts with Met1-linked ubiquitin chains and is an integral component of the tumor progression locus 2 (Tpl2) kinase complex. We generated a knock-in mouse expressing the ubiquitin-binding-defective mutant ABIN2[D310N]. The expression of Tpl2 and its activation by TLR agonists in macrophages or by IL-1β in fibroblasts from these mice was unimpaired, indicating that the interaction of ABIN2 with ubiquitin oligomers is not required for the stability or activation of Tpl2. The ABIN2[D310N] mice displayed intestinal inflammation and hypersensitivity to dextran sodium sulfate-induced colitis, an effect that was mediated by radiation-resistant cells rather than by hematopioetic cells. The IL-1β-dependent induction of cyclooxygenase 2 (COX2) and the secretion of PGE2 was reduced in mouse embryonic fibroblasts and intestinal myofibroblasts (IMFs) from ABIN2[D310N] mice. These observations are similar to those reported for the Tpl2 knockout (KO) mice (Roulis et al. 2014. Proc. Natl. Acad. Sci. USA 111: E4658-E4667), but the IL-1β-dependent production of COX2 and PGE2 in mouse embryonic fibroblasts or IMFs was unaffected by pharmacological inhibition of Tpl2 in wild-type mice. The expression of ABIN2 is decreased drastically in Tpl2 KO mice. These and other lines of evidence suggest that the hypersensitivity of Tpl2 KO mice to dextran sodium sulfate-induced colitis is not caused by the loss of Tpl2 catalytic activity but by the loss of ABIN2, which impairs COX2 and PGE2 production in IMFs by a Tpl2 kinase-independent pathway.
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Affiliation(s)
- Sambit K Nanda
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee DD1 5EH, United Kingdom
| | - Tsunehisa Nagamori
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee DD1 5EH, United Kingdom
| | - Mark Windheim
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee DD1 5EH, United Kingdom
| | - Sylvia Amu
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Gabriella Aviello
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Janet Patterson-Kane
- School of Veterinary Medicine, University of Glasgow, Glasgow G61 1QH, United Kingdom
| | - J Simon C Arthur
- Division of Cell Signalling and Immunology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, United Kingdom; and
| | - Steven C Ley
- The Francis Crick Institute, London NW1 1AT, United Kingdom
| | - Padraic Fallon
- Trinity Biomedical Sciences Institute, School of Medicine, Trinity College Dublin, Dublin 2, Ireland
| | - Philip Cohen
- Medical Research Council Protein Phosphorylation and Ubiquitylation Unit, University of Dundee, Dundee DD1 5EH, United Kingdom;
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18
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Bone Marrow Mesenchymal Stem Cells Combat Lipopolysaccharide-Induced Sepsis in Rats via Amendment of P38-MAPK Signaling Cascade. Inflammation 2018; 41:541-554. [PMID: 29204871 DOI: 10.1007/s10753-017-0710-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Sepsis is a systemic inflammatory disorder which often occurs during extremely stressful conditions such as trauma, burn, shock, and infection. This study investigated the curative effects of bone marrow-derived mesenchymal stem cells (BM-MSCs) against hepatic, renal, and pulmonary responses caused by a single administration of lipopolysaccharide (LPS) (10 mg/kg, i.p) in rats. Treatment with BM-MSCs (5 × 105 in 0.1 ml PBS, i.p.) 3 h after LPS antagonized the LPS-induced increment of the liver enzymes (ALT, AST) and kidney functions (BUN, sCr). BM-MSCs decreased tissue levels of P38-MAPK, NF-κB, STAT-3, TNF-α, IL-1β, iNOS, Bax together with elevation of the anti-inflammatory cytokine IL-10 and the anti-apoptotic biomarker Bcl-2. Meanwhile, rats exhibited marked reduction of the broncho-alveolar lavage fluid levels of TNF-α, IL-1β, and IFN-γ. Interestingly, BM-MSCs normalized both broncho-alveolar lavage fluid (BALF) neutrophils count and lung wet/dry ratios. Briefly, these findings may provide a preclinical platform for the management of LPS-induced sepsis using BM-MSCs via their ameliorative anti-inflammatory, anti-oxidant, and anti-apoptotic potentials.
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19
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Phosphorylation of iRhom2 Controls Stimulated Proteolytic Shedding by the Metalloprotease ADAM17/TACE. Cell Rep 2018; 21:745-757. [PMID: 29045841 PMCID: PMC5656746 DOI: 10.1016/j.celrep.2017.09.074] [Citation(s) in RCA: 74] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Revised: 07/12/2017] [Accepted: 09/22/2017] [Indexed: 12/02/2022] Open
Abstract
Cell surface metalloproteases coordinate signaling during development, tissue homeostasis, and disease. TACE (TNF-α-converting enzyme), is responsible for cleavage (“shedding”) of membrane-tethered signaling molecules, including the cytokine TNF, and activating ligands of the EGFR. The trafficking of TACE within the secretory pathway requires its binding to iRhom2, which mediates the exit of TACE from the endoplasmic reticulum. An important, but mechanistically unclear, feature of TACE biology is its ability to be stimulated rapidly on the cell surface by numerous inflammatory and growth-promoting agents. Here, we report a role for iRhom2 in TACE stimulation on the cell surface. TACE shedding stimuli trigger MAP kinase-dependent phosphorylation of iRhom2 N-terminal cytoplasmic tail. This recruits 14-3-3 proteins, enforcing the dissociation of TACE from complexes with iRhom2, promoting the cleavage of TACE substrates. Our data reveal that iRhom2 controls multiple aspects of TACE biology, including stimulated shedding on the cell surface. iRhom2 is phosphorylated in response to stimuli that activate the sheddase TACE Blocking iRhom phosphorylation represses TACE stimulated shedding Phosphorylated iRhom2 recruits 14-3-3 and dissociates from TACE, enabling shedding iRhom2 is thus a signal integrator and transducer of stimulated TACE shedding
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20
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Wang B, Chen T, Wang J, Jia Y, Ren H, Wu F, Hu M, Chen Y. Methamphetamine modulates the production of interleukin-6 and tumor necrosis factor-alpha via the cAMP/PKA/CREB signaling pathway in lipopolysaccharide-activated microglia. Int Immunopharmacol 2018; 56:168-178. [PMID: 29414647 DOI: 10.1016/j.intimp.2018.01.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 01/15/2018] [Accepted: 01/16/2018] [Indexed: 01/01/2023]
Abstract
Methamphetamine (METH) elicits neuroinflammatory effects that may implicate its regulatory role on the microglial immune response. However, the mechanism underlying this remains unclear. In the present study, the effects of METH on lipopolysaccharide (LPS)-induced interleukin-6 (IL-6) and tumor necrosis factor-alpha (TNF-α) productions were tested in BV-2 cells and primary microglial cells. Additionally, western blot analysis was used to examine the phosphorylation of mitogenactivated protein kinases (MAPKs). Next, we detected the alterations in cAMP content and the phosphorylation levels of CREB in microglial cells to determine the involvement of the cAMP/CREB signaling pathway. We also used an adenylyl cyclase (AC) agonist (forskolin) and antagonist (MDL-12330A) and a PKA antagonist (H89) to confirm their participation. We observed that METH alone did not affect the production of IL-6 or TNF-α. In contrast, METH augmented the IL-6 production and inhibited the TNF-α production induced by LPS. A similar effect of forskolin was also observed in BV-2 cells. While MAPK activation was not influenced by METH alone, the LPS-induced phosphorylation of p38, JNK and ERK1/2 were all reduced by METH. Both the concentration of cAMP and the phosphorylation of CREB were increased by METH in LPS-activated microglial cells. The effects of METH were altered by MDL-12330A and H89. Moreover, the inhibition of the phosphorylation of ERK1/2 by METH was also reversed. These results suggest that the differential regulation of IL-6 and TNF-α by METH in LPS-activated microglial cells may be attributable to the cAMP/PKA/CREB signaling pathway.
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Affiliation(s)
- Biao Wang
- Department of Immunology and Pathogenic Biology, College of Basic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Teng Chen
- Forensic Medicine College of Xi'an Jiaotong University, Key Laboratory of the Health Ministry for Forensic Medicine, Xi'an 710061, China
| | - Jing Wang
- Department of Immunology and Pathogenic Biology, College of Basic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Yuwei Jia
- Department of Immunology and Pathogenic Biology, College of Basic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Huixun Ren
- Department of Immunology and Pathogenic Biology, College of Basic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Feng Wu
- Graduate Teaching and Experiment Centre, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China
| | - Mei Hu
- Editorial Department of Infectious Disease Information, 302 Hospital of PLA, Beijing 100039, China
| | - Yanjiong Chen
- Department of Immunology and Pathogenic Biology, College of Basic Medicine, Xi'an Jiaotong University Health Science Center, Xi'an 710061, China.
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21
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Sison SL, Patitucci TN, Seminary ER, Villalon E, Lorson CL, Ebert AD. Astrocyte-produced miR-146a as a mediator of motor neuron loss in spinal muscular atrophy. Hum Mol Genet 2018. [PMID: 28637335 DOI: 10.1093/hmg/ddx230] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Spinal muscular atrophy (SMA), the leading genetic cause of infant mortality, is caused by the loss of the survival motor neuron-1 (SMN1) gene, which leads to motor neuron loss, muscle atrophy, respiratory distress, and death. Motor neurons exhibit the most profound loss, but the mechanisms underlying disease pathogenesis are not fully understood. Recent evidence suggests that motor neuron extrinsic influences, such as those arising from astrocytes, contribute to motor neuron malfunction and loss. Here we investigated both loss-of-function and toxic gain-of-function astrocyte mechanisms that could play a role in SMA pathology. We had previously found that glial derived neurotrophic factor (GDNF) is reduced in SMA astrocytes. However, reduced GDNF expression does not play a major role in SMA pathology as viral-mediated GDNF re-expression did not improve astrocyte function or motor neuron loss. In contrast, we found that SMA astrocytes increased microRNA (miR) production and secretion compared to control astrocytes, suggesting potential toxic gain-of-function properties. Specifically, we found that miR-146a was significantly upregulated in SMA induced pluripotent stem cell (iPSC)-derived astrocytes and SMNΔ7 mouse spinal cord. Moreover, increased miR-146a was sufficient to induce motor neuron loss in vitro, whereas miR-146a inhibition prevented SMA astrocyte-induced motor neuron loss. Together, these data indicate that altered astrocyte production of miR-146a may be a contributing factor in astrocyte-mediated SMA pathology.
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Affiliation(s)
- Samantha L Sison
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
| | - Teresa N Patitucci
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
| | - Emily R Seminary
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
| | - Eric Villalon
- Department of Veterinary Pathobiology, Bond Life Sciences Center, University of Missouri, Columbia, 65211 MO, USA
| | - Christian L Lorson
- Department of Veterinary Pathobiology, Bond Life Sciences Center, University of Missouri, Columbia, 65211 MO, USA
| | - Allison D Ebert
- Department of Cell Biology, Neurobiology and Anatomy, Medical College of Wisconsin, Milwaukee, 53226 WI, USA
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Li R, Wang T, Walia K, Gao B, Krepinsky JC. ADAM17 activation and regulation of profibrotic responses by high glucose requires its C-terminus and FAK kinase. J Cell Sci 2018; 131:jcs.208629. [DOI: 10.1242/jcs.208629] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 12/28/2017] [Indexed: 12/23/2022] Open
Abstract
Glomerular matrix accumulation is the hallmark of diabetic nephropathy. The metalloprotease ADAM17 mediates high glucose (HG)-induced matrix production by kidney mesangial cells through release of ligands for the epidermal growth factor receptor. Here we study the mechanism by which HG activates ADAM17. We find that the C-terminus is essential for ADAM17 activation and the profibrotic response to HG. In the C-terminus, Src-mediated Y702 phosphorylation and PI3K/MEK/Erk-mediated T735 phosphorylation are critical to ADAM17 activation, but play divergent roles in ADAM17 trafficking in response to HG. While T735 phosphorylation is required for the HG-induced increase in cell surface mature ADAM17, Y702 phosphorylation is dispensable. Src, however, enables trafficking independently of its phosphorylation of ADAM17. The nonreceptor tyrosine kinase FAK is a central mediator of these processes. These data not only support a critical role for the C-terminus in ADAM17 activation and downstream profibrotic responses to HG, but also highlight FAK as a potential alternate therapeutic target for diabetic nephropathy.
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Affiliation(s)
- Renzhong Li
- Division of Nephrology, McMaster University, Hamilton, Canada
| | - Tony Wang
- Division of Nephrology, McMaster University, Hamilton, Canada
| | - Khyati Walia
- Division of Nephrology, McMaster University, Hamilton, Canada
| | - Bo Gao
- Division of Nephrology, McMaster University, Hamilton, Canada
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Acuff NV, Li X, Latha K, Nagy T, Watford WT. Tpl2 Promotes Innate Cell Recruitment and Effector T Cell Differentiation To Limit Citrobacter rodentium Burden and Dissemination. Infect Immun 2017; 85:e00193-17. [PMID: 28760932 PMCID: PMC5607429 DOI: 10.1128/iai.00193-17] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Accepted: 07/22/2017] [Indexed: 01/22/2023] Open
Abstract
Tumor progression locus 2 (Tpl2) is a serine-threonine kinase that regulates Th1 differentiation, secretion of the inflammatory cytokine gamma interferon (IFN-γ), and host defense against the intracellular pathogens Toxoplasma gondii, Listeria monocytogenes, and Mycobacterium tuberculosis However, relatively little is known about the contribution of Tpl2 to Th17 differentiation and immune cell function during infection with an extracellular pathogen. The goal of this study was to determine whether Tpl2 influences the immune response generated to the extracellular bacterium Citrobacter rodentium, which induces a mixed Th1 and Th17 response. During peak infection with C. rodentium, Tpl2-/- mice experienced greater bacterial burdens with evidence of dissemination to the liver and spleen but ultimately cleared the bacteria within 3 weeks postinfection, similar to the findings for wild-type mice. Tpl2-/- mice also recruited fewer neutrophils and monocytes to the colon during peak infection, which correlated with increased bacterial burdens. In mixed bone marrow chimeras, Tpl2 was shown to play a T cell-intrinsic role in promoting both IFN-γ and interleukin-17A production during infection with C. rodentium However, upon CD4 T cell transfer into Rag-/- mice, Tpl2-/- CD4 T cells were as protective as wild-type CD4 T cells against the dissemination of bacteria and mortality. These data indicate that the enhanced bacterial burdens in Tpl2-/- mice are not caused primarily by impairments in CD4 T cell function but result from defects in innate immune cell recruitment and function.
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Affiliation(s)
- Nicole V Acuff
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Xin Li
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Krishna Latha
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Tamas Nagy
- Department of Pathology, University of Georgia, Athens, Georgia, USA
| | - Wendy T Watford
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
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Guzmán-Mejía F, López-Rubalcava C, González-Espinosa C. Stimulation of nAchRα7 Receptor Inhibits TNF Synthesis and Secretion in Response to LPS Treatment of Mast Cells by Targeting ERK1/2 and TACE Activation. J Neuroimmune Pharmacol 2017; 13:39-52. [PMID: 28822039 DOI: 10.1007/s11481-017-9760-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 08/08/2017] [Indexed: 12/28/2022]
Abstract
The cholinergic anti-inflammatory pathway is recognized as one of the main mechanisms of neuromodulation of the immune system. Activation of the α7 nicotinic acetylcholine receptor (nAchRα7) suppresses cytokine synthesis in distinct immune cells but the molecular mechanisms behind this effect remain to be fully described. Mast cells (MCs) are essential players of allergic reactions and innate immunity responses related to chronic inflammation. Activation of TLR4 receptor in MCs leads to the rapid secretion of pre-synthesized TNF from intracellular pools and to the activation of NFκB, necessary for de novo synthesis of TNF and other cytokines. Here we report that the nAchRα7 receptor specific agonist GTS-21 inhibits TLR4-induced secretion of preformed TNF from MCs in vivo and in vitro. Utilizing bone marrow-derived mast cells (BMMCs) it was found that GTS-21 also diminished secretion of de novo synthesized TNF, TNF mRNA accumulation and IKK-dependent p65-NFκB phosphorylation in response to LPS. nAchRα7 triggering prevented TLR4-induced ERK1/2 phosphorylation, which resulted an essential step for TNF secretion due to the phosphorylation of the metallopeptidase responsible for TNF maturation (TACE). Main inhibitory actions of GTS-21 were prevented by AG490, an inhibitor of JAK-2 kinase. Our results show for the first time, that besides the prevention of NFκB-dependent transcription, inhibitory actions of nAchRα7 triggering include the blockade of pathways leading to exocytosis of granule-stored cytokines in MCs.
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Affiliation(s)
- F Guzmán-Mejía
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Sede Sur, Calzada de los Tenorios No 235, Colonia Granjas Coapa, Tlalpan, CP 14330, Ciudad de México, Mexico
| | - C López-Rubalcava
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Sede Sur, Calzada de los Tenorios No 235, Colonia Granjas Coapa, Tlalpan, CP 14330, Ciudad de México, Mexico
| | - C González-Espinosa
- Departamento de Farmacobiología, Centro de Investigación y de Estudios Avanzados del IPN (Cinvestav), Sede Sur, Calzada de los Tenorios No 235, Colonia Granjas Coapa, Tlalpan, CP 14330, Ciudad de México, Mexico.
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25
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Wang P, Zhang X, Li F, Yuan K, Li M, Zhang J, Li B, Liang W. MiR-130b attenuates vascular inflammation via negatively regulating tumor progression locus 2 (Tpl2) expression. Int Immunopharmacol 2017; 51:9-16. [PMID: 28759810 DOI: 10.1016/j.intimp.2017.07.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 07/09/2017] [Accepted: 07/20/2017] [Indexed: 12/14/2022]
Abstract
Endothelial cell (EC) activation and dysfunction have been linked to a wide variety of vascular inflammatory diseases. However, the role of microRNAs in EC activation and inflammation remains largely unknown. In this study, we found that miR-130b was significantly decreased in human umbilical vein endothelial cells (HUVECs) after lipopolysaccharides (LPS) treatment. Forced expression of miR-130b inhibited the LPS-induced activation of extracellular signal-regulated kinase (ERK) and the inflammatory genes expression, such as interleukin (IL)-6 and tumor necrosis factor alpha (TNF-α). Furthermore, we identified that tumor progression locus 2 (Tpl2) is a direct target of miR-130b. Finally, in vivo overexpression of miR-130b via miR-130b agomir attenuates acute lung vascular inflammation in the LPS-induced sepsis mouse model. Taken together, our data demonstrated that miR-130b represses vascular inflammation via targeting Tpl2, suggesting that miR-130b mimics might be a promising therapeutic strategy for treatment of vascular inflammatory diseases.
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Affiliation(s)
- Peng Wang
- Department of Vascular Surgery, South Campus, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, China
| | - Xue Zhang
- Department of Vascular Surgery, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, China
| | - Fulun Li
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China
| | - Kai Yuan
- Department of Vascular Surgery, South Campus, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, China
| | - Maoran Li
- Department of Vascular Surgery, South Campus, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, China
| | - Jiwei Zhang
- Department of Vascular Surgery, South Campus, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, China
| | - Bin Li
- Department of Dermatology, Yueyang Hospital of Integrated Traditional Chinese and Western Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200437, China; Institute of Dermatology, Shanghai Academy of Traditional Chinese Medicine, Shanghai 201203, China.
| | - Wei Liang
- Department of Vascular Surgery, South Campus, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, China.
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26
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TPL2 meets p38MAPK: emergence of a novel positive feedback loop in inflammation. Biochem J 2017; 473:2995-9. [PMID: 27679858 DOI: 10.1042/bcj20160672c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 07/28/2016] [Indexed: 01/06/2023]
Abstract
The activation of p38(MAPK) by Toll-like receptor signalling is essential for the inflammatory response of innate immunity due to its role in post-transcriptional regulation of TNFα and cytokine biosynthesis. p38(MAPK) activation proceeds by the upstream MAP2Ks, MAPK kinase (MKK)3/6 as well as MKK4, which in turn are substrates for MAP3Ks, such as TGFβ-activated protein kinase-1 (TAK1). In contrast, TPL2 has been described as an exclusive MAP3K of MKK1/2-triggering activation of the classical ERKs, ERK1/2. In the recent issue of the Biochemical Journal, Pattison et al report their screening for TPL2 substrates in LPS-stimulated macrophages and the identification of MKK3/6. Using catalytic-dead TPL2 (Map3k8(D270A/D270A)) knockin macrophages, they demonstrated that activation of MKK3/6 by TPL2 significantly contributes to LPS-dependent TNFα biosynthesis and is also essential for TNF-receptor 1 signalling. Hence, a new signalling pathway from TAK1 via IκB kinase, p105 NFκB and TPL2 to MKK3/6 and p38(MAPK) is established in macrophages. Taking into account that some isoforms of p38(MAPK) are necessary for maintaining functional steady-state levels of TPL2, a positive feedback loop in inflammation emerges.
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27
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Cuenda A, Sanz-Ezquerro JJ. p38γ and p38δ: From Spectators to Key Physiological Players. Trends Biochem Sci 2017; 42:431-442. [PMID: 28473179 DOI: 10.1016/j.tibs.2017.02.008] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 02/14/2017] [Accepted: 02/22/2017] [Indexed: 12/20/2022]
Abstract
Although the physiological roles of p38γ and p38δ signalling pathways are largely unknown, new genetic and pharmacological tools are providing groundbreaking information on the function of these two stress-activated protein kinases. Recent studies show the importance of p38γ and p38δ in the regulation of processes as diverse as cytokine production, protein synthesis, exocytosis, cell migration, gene expression, and neuron activity, which have an acute impact on the development of pathologies related to inflammation, diabetes, neurodegeneration, and cancer. These recent breakthroughs are resolving some of the questions that have long been asked regarding the function of p38γ and p38δ in biology and pathology.
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Affiliation(s)
- Ana Cuenda
- Department of Immunology and Oncology, Centro Nacional de Biotecnología/CSIC, Campus de Cantoblanco, 28049 Madrid, Spain.
| | - Juan José Sanz-Ezquerro
- Department of Molecular and Cellular Biology, Centro Nacional de Biotecnología/CSIC, Campus de Cantoblanco, 28049 Madrid, Spain
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28
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Acuff NV, Li X, Elmore J, Rada B, Watford WT. Tpl2 promotes neutrophil trafficking, oxidative burst, and bacterial killing. J Leukoc Biol 2017; 101:1325-1333. [PMID: 28356348 DOI: 10.1189/jlb.3a0316-146r] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2016] [Revised: 02/03/2017] [Accepted: 03/06/2017] [Indexed: 12/17/2022] Open
Abstract
Tumor progression locus 2 (Tpl2) is a serine/threonine kinase that promotes inflammatory cytokine production by activating the MEK/ERK pathway. Tpl2 has been shown to be important for eliciting the inflammatory properties of macrophages; however, there is relatively little known about the contribution of Tpl2 to neutrophil effector functions. This is an important consideration, as neutrophils provide the first line of defense against infection in the innate immune system. We found that Tpl2 is expressed in both human and murine neutrophils, suggesting a potential function for Tpl2 in this lineage. Despite significantly higher proportions of bone marrow (BM) neutrophils in Tpl2-deficient (Tpl2-/- ) mice compared with wild-type (WT) mice, Tpl2-/- mice have significantly reduced proportions of circulating neutrophils. Tpl2-/- neutrophils show impaired recruitment to thioglycollate, which was primarily a result of neutrophil-extrinsic factors in the host. In response to infection, neutrophils secrete inflammatory cytokines and produce reactive oxygen species (ROS), which promote bacterial killing. Tpl2 ablation impaired neutrophil TNF secretion in response to LPS stimulation, superoxide generation in response to the chemotactic peptide fMLP, and killing of the extracellular bacterium, Citrobacter rodentium, despite normal bacterial phagocytosis. These results implicate Tpl2 in the regulation of multiple neutrophil antimicrobial pathways, including inflammatory cytokine secretion and oxidative burst. Furthermore, they indicate that Tpl2 functions early during infection to bolster neutrophil-mediated innate immunity against extracellular bacteria.
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Affiliation(s)
- Nicole V Acuff
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Xin Li
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Jessica Elmore
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Balázs Rada
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
| | - Wendy T Watford
- Department of Infectious Diseases, University of Georgia, Athens, Georgia, USA
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29
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Asimakopoulos F, Hope C, Johnson MG, Pagenkopf A, Gromek K, Nagel B. Extracellular matrix and the myeloid-in-myeloma compartment: balancing tolerogenic and immunogenic inflammation in the myeloma niche. J Leukoc Biol 2017; 102:265-275. [PMID: 28254840 DOI: 10.1189/jlb.3mr1116-468r] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 02/06/2017] [Accepted: 02/09/2017] [Indexed: 12/14/2022] Open
Abstract
The last 10-15 years have witnessed a revolution in treating multiple myeloma, an incurable cancer of Ab-producing plasma cells. Advances in myeloma therapy were ushered in by novel agents that remodel the myeloma immune microenvironment. The first generation of novel agents included immunomodulatory drugs (thalidomide analogs) and proteasome inhibitors that target crucial pathways that regulate immunity and inflammation, such as NF-κB. This paradigm continued with the recent regulatory approval of mAbs (elotuzumab, daratumumab) that impact both tumor cells and associated immune cells. Moreover, recent clinical data support checkpoint inhibition immunotherapy in myeloma. With the success of these agents has come the growing realization that the myeloid infiltrate in myeloma lesions-what we collectively call the myeloid-in-myeloma compartment-variably sustains or deters tumor cells by shaping the inflammatory milieu of the myeloma niche and by promoting or antagonizing immune-modulating therapies. The myeloid-in-myeloma compartment includes myeloma-associated macrophages and granulocytes, dendritic cells, and myeloid-derived-suppressor cells. These cell types reflect variable states of differentiation and activation of tumor-infiltrating cells derived from resident myeloid progenitors in the bone marrow-the canonical myeloma niche-or myeloid cells that seed both canonical and extramedullary, noncanonical niches. Myeloma-infiltrating myeloid cells engage in crosstalk with extracellular matrix components, stromal cells, and tumor cells. This complex regulation determines the composition, activation state, and maturation of the myeloid-in-myeloma compartment as well as the balance between immunogenic and tolerogenic inflammation in the niche. Redressing this balance may be a crucial determinant for the success of antimyeloma immunotherapies.
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Affiliation(s)
- Fotis Asimakopoulos
- Department of Medicine, Division of Hematology/Oncology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA; .,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | - Chelsea Hope
- Department of Medicine, Division of Hematology/Oncology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | - Michael G Johnson
- Department of Medicine, Division of Hematology/Oncology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | - Adam Pagenkopf
- Department of Medicine, Division of Hematology/Oncology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | - Kimberly Gromek
- Department of Medicine, Division of Hematology/Oncology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
| | - Bradley Nagel
- Department of Medicine, Division of Hematology/Oncology, University of Wisconsin-Madison School of Medicine and Public Health, Madison, Wisconsin, USA.,University of Wisconsin Carbone Cancer Center, Madison, Wisconsin, USA
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30
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Stimulated release and functional activity of surface expressed metalloproteinase ADAM17 in exosomes. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2016; 1863:2795-2808. [DOI: 10.1016/j.bbamcr.2016.09.002] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 08/02/2016] [Accepted: 09/02/2016] [Indexed: 12/15/2022]
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31
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Lee JH, Lee JH, Lee SH, Do SI, Cho SD, Forslund O, Inn KS, Lee JS, Deng FM, Melamed J, Jung JU, Jeong JH. TPL2 Is an Oncogenic Driver in Keratocanthoma and Squamous Cell Carcinoma. Cancer Res 2016; 76:6712-6722. [DOI: 10.1158/0008-5472.can-15-3274] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 05/09/2016] [Accepted: 06/27/2016] [Indexed: 11/16/2022]
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32
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Kannan Y, Perez-Lloret J, Li Y, Entwistle LJ, Khoury H, Papoutsopoulou S, Mahmood R, Mansour NR, Ching-Cheng Huang S, Pearce EJ, Pedro S. de Carvalho L, Ley SC, Wilson MS. TPL-2 Regulates Macrophage Lipid Metabolism and M2 Differentiation to Control TH2-Mediated Immunopathology. PLoS Pathog 2016; 12:e1005783. [PMID: 27487182 PMCID: PMC4972396 DOI: 10.1371/journal.ppat.1005783] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 06/30/2016] [Indexed: 01/05/2023] Open
Abstract
Persistent TH2 cytokine responses following chronic helminth infections can often lead to the development of tissue pathology and fibrotic scarring. Despite a good understanding of the cellular mechanisms involved in fibrogenesis, there are very few therapeutic options available, highlighting a significant medical need and gap in our understanding of the molecular mechanisms of TH2-mediated immunopathology. In this study, we found that the Map3 kinase, TPL-2 (Map3k8; Cot) regulated TH2-mediated intestinal, hepatic and pulmonary immunopathology following Schistosoma mansoni infection or S. mansoni egg injection. Elevated inflammation, TH2 cell responses and exacerbated fibrosis in Map3k8–/–mice was observed in mice with myeloid cell-specific (LysM) deletion of Map3k8, but not CD4 cell-specific deletion of Map3k8, indicating that TPL-2 regulated myeloid cell function to limit TH2-mediated immunopathology. Transcriptional and metabolic assays of Map3k8–/–M2 macrophages identified that TPL-2 was required for lipolysis, M2 macrophage activation and the expression of a variety of genes involved in immuno-regulatory and pro-fibrotic pathways. Taken together this study identified that TPL-2 regulated TH2-mediated inflammation by supporting lipolysis and M2 macrophage activation, preventing TH2 cell expansion and downstream immunopathology and fibrosis. Chronic helminth infections can cause significant morbidity and organ damage in their definitive mammalian hosts. Managing this collateral damage can reduce morbidity and preserve vital tissues for normal organ function. One particular consequence of some chronic helminth infections is the deposition of fibrotic scar tissue, following immune responses directed towards helminth material. In this study we tested the role of a particular signalling kinase, TPL-2, and identified that it critically regulated the magnitude of fibrotic scarring following infection. Using several murine models with genetic deletions of TPL-2 in either all cells or specific deletion in subsets of immune cells (Map3k8–/–Map3k8fl/fl) we identified that expression of TPL-2 in myeloid cells was essential to prevent severe immune-mediated pathology. Using genome-wide analyses and metabolic assays, we discovered that TPL-2 was required for normal lipid metabolism and appropriate activation of myeloid cells / macrophages to limit fibrosis. These results revealed a previously unappreciated role for TPL-2 in preventing severe pathology following infection. Thus, activating this pathway may limit immune mediated pathology following chronic helminth infection. More broadly, this pathway is being targeted to treat inflammatory diseases and cancer [1, 2]. This study would suggest that caution should be taken to prevent untoward co-morbidities and fibrosis-related pathologies in patients when targeting TPL-2.
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Affiliation(s)
- Yashaswini Kannan
- Allergy and Anti-Helminth Immunity Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Jimena Perez-Lloret
- Allergy and Anti-Helminth Immunity Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Yanda Li
- Allergy and Anti-Helminth Immunity Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Lewis J. Entwistle
- Allergy and Anti-Helminth Immunity Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Hania Khoury
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, United Kingdom
| | | | - Radma Mahmood
- Experimental Histopathology, Mill Hill Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Nuha R. Mansour
- Department of Infection and Immunity, London School of Hygiene and Tropical Medicine, London, United Kingdom
| | - Stanley Ching-Cheng Huang
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Edward J. Pearce
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, United States of America
| | - Luiz Pedro S. de Carvalho
- Mycobacterial Metabolism and Antibiotic Research Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Steven C. Ley
- Immune Cell Signaling Laboratory, The Francis Crick Institute, London, United Kingdom
| | - Mark S. Wilson
- Allergy and Anti-Helminth Immunity Laboratory, The Francis Crick Institute, London, United Kingdom
- * E-mail:
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Clausen BH, Degn M, Sivasaravanaparan M, Fogtmann T, Andersen MG, Trojanowsky MD, Gao H, Hvidsten S, Baun C, Deierborg T, Finsen B, Kristensen BW, Bak ST, Meyer M, Lee J, Nedospasov SA, Brambilla R, Lambertsen KL. Conditional ablation of myeloid TNF increases lesion volume after experimental stroke in mice, possibly via altered ERK1/2 signaling. Sci Rep 2016; 6:29291. [PMID: 27384243 PMCID: PMC4935869 DOI: 10.1038/srep29291] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 06/17/2016] [Indexed: 01/08/2023] Open
Abstract
Microglia are activated following cerebral ischemia and increase their production of the neuro- and immunomodulatory cytokine tumor necrosis factor (TNF). To address the function of TNF from this cellular source in focal cerebral ischemia we used TNF conditional knock out mice (LysMcreTNFfl/fl) in which the TNF gene was deleted in cells of the myeloid lineage, including microglia. The deletion reduced secreted TNF levels in lipopolysaccharide-stimulated cultured primary microglia by ~93%. Furthermore, phosphorylated-ERK/ERK ratios were significantly decreased in naïve LysMcreTNFfl/fl mice demonstrating altered ERK signal transduction. Micro-PET using 18[F]-fluorodeoxyglucose immediately after focal cerebral ischemia showed increased glucose uptake in LysMcreTNFfl/fl mice, representing significant metabolic changes, that translated into increased infarct volumes at 24 hours and 5 days compared to littermates (TNFfl/fl). In naïve LysMcreTNFfl/fl mice cytokine levels were low and comparable to littermates. At 6 hours, TNF producing microglia were reduced by 56% in the ischemic cortex in LysMcreTNFfl/fl mice compared to littermate mice, whereas no TNF+ leukocytes were detected. At 24 hours, pro-inflammatory cytokine (TNF, IL-1β, IL-6, IL-5 and CXCL1) levels were significantly lower in LysMcreTNFfl/fl mice, despite comparable infiltrating leukocyte populations. Our results identify microglial TNF as beneficial and neuroprotective in the acute phase and as a modulator of neuroinflammation at later time points after experimental ischemia, which may contribute to regenerative recovery.
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Affiliation(s)
- Bettina Hjelm Clausen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Matilda Degn
- Rigshospitalet, Department of Diagnostics, Molecular Sleep Lab, Nordre Ringvej 69, DK-2600 Glostrup, Denmark
| | - Mithula Sivasaravanaparan
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Torben Fogtmann
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Maria Gammelstrup Andersen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Michelle D Trojanowsky
- Miami Project to Cure Paralysis, University os Miami Miller School of Medicine, 1095 NW 14th Terrace, Miami, FL 33136, USA
| | - Han Gao
- Miami Project to Cure Paralysis, University os Miami Miller School of Medicine, 1095 NW 14th Terrace, Miami, FL 33136, USA
| | - Svend Hvidsten
- Department of Nulcear Medicine, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense C, Denmark
| | - Christina Baun
- Department of Nulcear Medicine, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense C, Denmark
| | - Tomas Deierborg
- Department of Experimental Medical Sciences, Experimental Neuroinflammation Laboratory, Lund University, Sölveg 19, 22100 Lund, Sweden
| | - Bente Finsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Bjarne Winther Kristensen
- Institute of Clinical Research, University of Southern Denmark, J.B. Winsloewsvej 19, DK-5000 Odense C, Denmark.,Department of Pathology, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense C, Denmark
| | - Sara Thornby Bak
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Morten Meyer
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark
| | - Jae Lee
- Miami Project to Cure Paralysis, University os Miami Miller School of Medicine, 1095 NW 14th Terrace, Miami, FL 33136, USA
| | - Sergei A Nedospasov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences and Lomonosov Moscow State University, Vavilova Str 32, Moscow, 119991, Russia
| | - Roberta Brambilla
- Miami Project to Cure Paralysis, University os Miami Miller School of Medicine, 1095 NW 14th Terrace, Miami, FL 33136, USA
| | - Kate Lykke Lambertsen
- Department of Neurobiology Research, Institute of Molecular Medicine, University of Southern Denmark, J.B. Winsloewsvej 21st, DK-5000 Odense C, Denmark.,Department of Neurology, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense C, Denmark
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34
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Rousseau S, Martel G. Gain-of-Function Mutations in the Toll-Like Receptor Pathway: TPL2-Mediated ERK1/ERK2 MAPK Activation, a Path to Tumorigenesis in Lymphoid Neoplasms? Front Cell Dev Biol 2016; 4:50. [PMID: 27303665 PMCID: PMC4881378 DOI: 10.3389/fcell.2016.00050] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2016] [Accepted: 05/09/2016] [Indexed: 12/04/2022] Open
Abstract
Lymphoid neoplasms form a family of cancers affecting B-cells, T-cells, and NK cells. The Toll-Like Receptor (TLR) signaling adapter molecule MYD88 is the most frequently mutated gene in these neoplasms. This signaling adaptor relays signals from TLRs to downstream effector pathways such as the Nuclear Factor kappa B (NFκB) and Mitogen Activated Protein Kinase (MAPK) pathways to regulate innate immune responses. Gain-of-function mutations such as MYD88[L265P] activate downstream signaling pathways in absence of cognate ligands for TLRs, resulting in increased cellular proliferation and survival. This article reports an analysis of non-synonymous somatic mutations found in the TLR signaling network in lymphoid neoplasms. In accordance with previous reports, mutations map to MYD88 pro-inflammatory signaling and not TRIF-mediated Type I IFN production. Interestingly, the analysis of somatic mutations found downstream of the core TLR-signaling network uncovered a strong association with the ERK1/2 MAPK cascade. In support of this analysis, heterologous expression of MYD88[L265P] in HEK293 cells led to ERK1/2 MAPK phosphorylation in addition to NFκB activation. Moreover, this activation is dependent on the protein kinase Tumor Promoting Locus 2 (TPL2), activated downstream of the IKK complex. Activation of ERK1/2 would then lead to activation, amongst others, of MYC and hnRNPA1, two proteins previously shown to contribute to tumor formation in lymphoid neoplasms. Taken together, this analysis suggests that TLR-mediated ERK1/2 activation via TPL2 may be a novel path to tumorigenesis. Therefore, the hypothesis proposed is that inhibition of ERK1/2 MAPK activation would prevent tumor growth downstream of MYD88[L265]. It will be interesting to test whether pharmacological inhibitors of this pathway show efficacy in primary tumor cells derived from hematologic malignancies such as Waldenstrom's Macroglobulinemia, where the majority of the cells carry the MYD88[L265P] mutation.
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Affiliation(s)
- Simon Rousseau
- Meakins-Christie Laboratories, Department of Medicine, McGill University, and McGill University Health Centre Research Institute Montreal, QC, Canada
| | - Guy Martel
- Meakins-Christie Laboratories, Department of Medicine, McGill University, and McGill University Health Centre Research Institute Montreal, QC, Canada
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Berthou F, Ceppo F, Dumas K, Massa F, Vergoni B, Alemany S, Cormont M, Tanti JF. The Tpl2 Kinase Regulates the COX-2/Prostaglandin E2 Axis in Adipocytes in Inflammatory Conditions. Mol Endocrinol 2015; 29:1025-36. [PMID: 26020725 DOI: 10.1210/me.2015-1027] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Bioactive lipid mediators such as prostaglandin E2 (PGE2) have emerged as potent regulator of obese adipocyte inflammation and functions. PGE2 is produced by cyclooxygenases (COXs) from arachidonic acid, but inflammatory signaling pathways controlling COX-2 expression and PGE2 production in adipocytes remain ill-defined. Here, we demonstrated that the MAP kinase kinase kinase tumor progression locus 2 (Tpl2) controls COX-2 expression and PGE2 secretion in adipocytes in response to different inflammatory mediators. We found that pharmacological- or small interfering RNA-mediated Tpl2 inhibition in 3T3-L1 adipocytes decreased by 50% COX-2 induction in response to IL-1β, TNF-α, or a mix of the 2 cytokines. PGE2 secretion induced by the cytokine mix was also markedly blunted. At the molecular level, nuclear factor κB was required for Tpl2-induced COX-2 expression in response to IL-1β but was inhibitory for the TNF-α or cytokine mix response. In a coculture between adipocytes and macrophages, COX-2 was mainly increased in adipocytes and pharmacological inhibition of Tpl2 or its silencing in adipocytes markedly reduced COX-2 expression and PGE2 secretion. Further, Tpl2 inhibition in adipocytes reduces by 60% COX-2 expression induced by a conditioned medium from lipopolysaccharide (LPS)-treated macrophages. Importantly, LPS was less efficient to induce COX-2 mRNA in adipose tissue explants of Tpl2 null mice compared with wild-type and Tpl2 null mice displayed low COX-2 mRNA induction in adipose tissue in response to LPS injection. Collectively, these data established that activation of Tpl2 by inflammatory stimuli in adipocytes and adipose tissue contributes to increase COX-2 expression and production of PGE2 that could participate in the modulation of adipose tissue inflammation during obesity.
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Affiliation(s)
- Flavien Berthou
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Franck Ceppo
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Karine Dumas
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Fabienne Massa
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Bastien Vergoni
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Susana Alemany
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Mireille Cormont
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
| | - Jean-François Tanti
- Inserm (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Unit 1065, Centre Méditerranéen de Médecine Moléculaire, Team 7 "Molecular and Cellular Physiopathology of Obesity and Diabetes," and Université Nice Sophia Antipolis (F.B., F.C., K.D., F.M., B.V., M.C., J.-F.T.), Centre Méditerranéen de Médecine Moléculaire, 06204 Cedex 3 Nice, France; and Instituto Investigaciones Biomédicas Alberto Sols (S.A.), Consejo Superior de Investigaciones Científicas-Universidad Autonoma de Madrid, 28029 Madrid, Spain
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Lee HW, Choi HY, Joo KM, Nam DH. Tumor progression locus 2 (Tpl2) kinase as a novel therapeutic target for cancer: double-sided effects of Tpl2 on cancer. Int J Mol Sci 2015; 16:4471-91. [PMID: 25723737 PMCID: PMC4394431 DOI: 10.3390/ijms16034471] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 02/15/2015] [Accepted: 02/15/2015] [Indexed: 12/14/2022] Open
Abstract
Tumor progression locus 2 (Tpl2) is a mitogen-activated protein kinase (MAPK) kinase kinase (MAP3K) that conveys various intra- and extra-cellular stimuli to effector proteins of cells provoking adequate adoptive responses. Recent studies have elucidated that Tpl2 is an indispensable signal transducer as an MAP3K family member in diverse signaling pathways that regulate cell proliferation, survival, and death. Since tumorigenesis results from dysregulation of cellular proliferation, differentiation, and apoptosis, Tpl2 participates in many decisive molecular processes of tumor development and progression. Moreover, Tpl2 is closely associated with cytokine release of inflammatory cells, which has crucial effects on not only tumor cells but also tumor microenvironments. These critical roles of Tpl2 in human cancers make it an attractive anti-cancer therapeutic target. However, Tpl2 contradictorily works as a tumor suppressor in some cancers. The double-sided effects of Tpl2 originate from the specific upstream and downstream signaling environment of each tumor, since Tpl2 interacts with various signaling components. This review summarizes recent studies concerning the possible roles of Tpl2 in human cancers and considers its possibility as a therapeutic target, against which novel anti-cancer agents could be developed.
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Affiliation(s)
- Hye Won Lee
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 135-710 Seoul, Korea.
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 135-710 Seoul, Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, 135-710 Seoul, Korea.
| | - Han Yong Choi
- Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 135-710 Seoul, Korea.
| | - Kyeung Min Joo
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, 135-710 Seoul, Korea.
- Department of Anatomy and Cell Biology, Samsung Medical Center, Sungkyunkwan University School of Medicine, 135-710 Seoul, Korea.
| | - Do-Hyun Nam
- Department of Neurosurgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 135-710 Seoul, Korea.
- Department of Health Sciences and Technology, SAIHST, Sungkyunkwan University, 135-710 Seoul, Korea.
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Caballero FJ, Soler-Torronteras R, Lara-Chica M, García V, Fiebich BL, Muñoz E, Calzado MA. AM404 inhibits NFAT and NF-κB signaling pathways and impairs migration and invasiveness of neuroblastoma cells. Eur J Pharmacol 2014; 746:221-32. [PMID: 25460026 DOI: 10.1016/j.ejphar.2014.11.023] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Revised: 11/14/2014] [Accepted: 11/17/2014] [Indexed: 01/03/2023]
Abstract
N-Arachidonoylphenolamine (AM404), a paracetamol lipid metabolite, is a modulator of the endocannabinoid system endowed with pleiotropic activities. AM404 is a dual agonist of the Transient Receptor Potential Vanilloid type 1 (TRPV1) and the Cannabinoid Receptor type 1 (CB₁) and inhibits anandamide (AEA) transport and degradation. In addition, it has been shown that AM404 also exerts biological activities through TRPV1- and CB₁ -independent pathways. In the present study we have investigated the effect of AM404 in the NFAT and NF-κB signaling pathways in SK-N-SH neuroblastoma cells. AM404 inhibited NFAT transcriptional activity through a CB₁- and TRPV1-independent mechanism. Moreover, AM404 inhibited both the expression of COX-2 at transcriptional and post-transcriptional levels and the synthesis of PGE₂. AM404 also inhibited NF-κB activation induced by PMA/Ionomycin in SK-N-SH cells by targeting IKKβ phosphorylation and activation. We found that Cot/Tlp-2 induced NFAT and COX-2 transcriptional activities were inhibited by AM404. NFAT inhibition paralleled with the ability of AM404 to inhibit MMP-1, -3 and -7 expression, cell migration and invasion in a cell-type specific dependent manner. Taken together, these data reveal that paracetamol, the precursor of AM404, can be explored not only as an antipyretic and painkiller drug but also as a co-adjuvant therapy in inflammatory and cancer diseases.
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Affiliation(s)
- Francisco J Caballero
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/ Hospital Universitario Reina Sofía/ Universidad de Córdoba, Córdoba, Spain
| | - Rafael Soler-Torronteras
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/ Hospital Universitario Reina Sofía/ Universidad de Córdoba, Córdoba, Spain
| | - Maribel Lara-Chica
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/ Hospital Universitario Reina Sofía/ Universidad de Córdoba, Córdoba, Spain
| | - Victor García
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/ Hospital Universitario Reina Sofía/ Universidad de Córdoba, Córdoba, Spain
| | - Bernd L Fiebich
- Department of Psychiatry, University of Freiburg Medical School, Freiburg, Germany
| | - Eduardo Muñoz
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/ Hospital Universitario Reina Sofía/ Universidad de Córdoba, Córdoba, Spain.
| | - Marco A Calzado
- Instituto Maimónides de Investigación Biomédica de Córdoba (IMIBIC)/ Hospital Universitario Reina Sofía/ Universidad de Córdoba, Córdoba, Spain.
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Kuriakose T, Rada B, Watford WT. Tumor progression locus 2-dependent oxidative burst drives phosphorylation of extracellular signal-regulated kinase during TLR3 and 9 signaling. J Biol Chem 2014; 289:36089-100. [PMID: 25378393 DOI: 10.1074/jbc.m114.587121] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Signal transduction via NFκB and MAP kinase cascades is a universal response initiated upon pathogen recognition by Toll-like receptors (TLRs). How activation of these divergent signaling pathways is integrated to dictate distinct immune responses to diverse pathogens is still incompletely understood. Herein, contrary to current perception, we demonstrate that a signaling pathway defined by the inhibitor of κB kinase β (IKKβ), MAP3 kinase tumor progression locus 2 (Tpl2/MAP3K8), and MAP kinase ERK is differentially activated by TLRs. TLRs 2, 4, and 7 directly activate this inflammatory axis, inducing immediate ERK phosphorylation and early TNFα secretion. In addition to TLR adaptor proteins, IKKβ-Tpl2-ERK activation by TLR4 is regulated by the TLR4 co-receptor CD14 and the tyrosine kinase Syk. Signals from TLRs 3 and 9 do not initiate early activation of IKKβ-Tpl2-ERK pathway but instead induce delayed, NADPH-oxidase-dependent ERK phosphorylation and TNFα secretion via autocrine reactive oxygen species signaling. Unexpectedly, Tpl2 is an essential regulator of ROS production during TLR signaling. Overall, our study reveals distinct mechanisms activating a common inflammatory signaling cascade and delineates differences in MyD88-dependent signaling between endosomal TLRs 7 and 9. These findings further confirm the importance of Tpl2 in innate host defense mechanisms and also enhance our understanding of how the immune system tailors pathogen-specific gene expression patterns.
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Affiliation(s)
- Teneema Kuriakose
- From the Department of Infectious Diseases, The University of Georgia, College of Veterinary Medicine, Athens, Georgia 30602
| | - Balázs Rada
- From the Department of Infectious Diseases, The University of Georgia, College of Veterinary Medicine, Athens, Georgia 30602
| | - Wendy T Watford
- From the Department of Infectious Diseases, The University of Georgia, College of Veterinary Medicine, Athens, Georgia 30602
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Hull M, Lee E, Lee T, Anand N, LaLone V, Parameswaran N. Lithium chloride induces TNFα in mouse macrophages via MEK-ERK-dependent pathway. J Cell Biochem 2014; 115:71-80. [PMID: 23904208 DOI: 10.1002/jcb.24634] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Accepted: 07/19/2013] [Indexed: 12/12/2022]
Abstract
Lithium (Li) is one of the currently prescribed drugs for bipolar disorders (BPDs) and has many neuro-regulatory and immune-modulating properties. Because many neuro-pathological diseases including BPDs have been associated with some level of inflammation, Li's effect on inflammation may have some crucial consequences. Even though Li has been shown to have pro- and anti-inflammatory activities in different cell models, mechanisms involved in these effects are not well understood. Moreover, Li's effect on inflammation in the presence of activators of Toll-like receptors (TLRs), especially TLR-2 (that activates MyD88-dependent pathway) and TLR-3 (that activates TRIF-dependent pathway) is not known. Here we tested the role of Li in the presence and absence of TLR2, and TLR3 on MAPK and NFκB pathways and the consequent production of tumor necrosis factor-α (TNFα) in Raw264.7 macrophages. Our results indicate that Li enhances TNFα production both in the absence and presence of TLR stimulation. Interestingly, Li differentially modulates MAPK and NFκB pathways in the absence and presence of TLR2/3 ligands. Our results further indicate that the effect of Li on TNFα occurs at the post-transcriptional level. Together, these studies demonstrate that Li induces TNFα production in macrophages and that it modulates signaling at different levels depending on the presence or absence of TLR2/3 stimulation.
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Affiliation(s)
- Megan Hull
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, Michigan, USA
| | - Eunhee Lee
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, Michigan, USA
| | - Taehyung Lee
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, Michigan, USA
| | - Nandita Anand
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, Michigan, USA
| | - Vernon LaLone
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, Michigan, USA
| | - Narayanan Parameswaran
- Department of Physiology and Division of Pathology, Michigan State University, East Lansing, Michigan, USA
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Physical and functional interaction of the TPL2 kinase with nucleophosmin. Oncogene 2014; 34:2516-26. [PMID: 24998852 DOI: 10.1038/onc.2014.183] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 05/01/2014] [Accepted: 05/21/2014] [Indexed: 12/18/2022]
Abstract
Tumor Progression Locus 2 (TPL2) is widely recognized as a cytoplasmic mitogen-activated protein 3 kinase with a prominent role in the regulation of inflammatory and oncogenic signal transduction. Herein we report that TPL2 may also operate in the nucleus as a physical and functional partner of nucleophosmin (NPM/B23), a major nucleolar phosphoprotein with diverse cellular activities linked to malignancy. We demonstrate that TPL2 mediates the phosphorylation of a fraction of NPM at threonine 199, an event required for its proteasomal degradation and maintenance of steady-state NPM levels. Upon exposure to ultraviolet C, Tpl2 is required for the translocation of de-phosphorylated NPM from the nucleolus to the nucleoplasm. NPM is an endogenous inhibitor of HDM2:p53 interaction and knockdown of TPL2 was found to result in reduced binding of NPM to HDM2, with concomitant defects in p53 accumulation following genotoxic or ribosomal stress. These findings expand our understanding of the function of TPL2 as a negative regulator of carcinogenesis by defining a nuclear role for this kinase in the topological sequestration of NPM, linking p53 signaling to the generation of threonine 199-phosphorylated NPM.
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Abstract
The binding of tumour necrosis factor α (TNFα) to cell surface receptors engages multiple signal transduction pathways, including three groups of mitogen-activated protein (MAP) kinases: extracellular-signal-regulated kinases (ERKs); the cJun NH2-terminal kinases (JNKs); and the p38 MAP kinases. These MAP kinase signalling pathways induce a secondary response by increasing the expression of several inflammatory cytokines (including TNFα) that contribute to the biological activity of TNFα. MAP kinases therefore function both upstream and down-stream of signalling by TNFα receptors. Here we review mechanisms that mediate these actions of MAP kinases during the response to TNFα.
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Affiliation(s)
- Guadalupe Sabio
- Department of Vascular Biology and Inflammation, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III, 28029 Madrid, Spain
| | - Roger J Davis
- Howard Hughes Medical Institute and Program in Molecular Medicine, University of Massachusetts Medical School, Worcester, MA 01605, USA.
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Ceppo F, Berthou F, Jager J, Dumas K, Cormont M, Tanti JF. Implication of the Tpl2 kinase in inflammatory changes and insulin resistance induced by the interaction between adipocytes and macrophages. Endocrinology 2014; 155:951-64. [PMID: 24424060 DOI: 10.1210/en.2013-1815] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Adipose tissue inflammation is associated with the development of insulin resistance. In obese adipose tissue, lipopolysaccharides (LPSs) and saturated fatty acids trigger inflammatory factors that mediate a paracrine loop between adipocytes and macrophages. However, the inflammatory signaling proteins underlying this cross talk remain to be identified. The mitogen-activated protein kinase kinase kinase tumor progression locus 2 (Tpl2) is activated by inflammatory stimuli, including LPS, and its expression is up-regulated in obese adipose tissue, but its role in the interaction between adipocytes and macrophages remains ill-defined. To assess the implication of Tpl2 in the cross talk between these 2 cell types, we used coculture system and conditioned medium (CM) from macrophages. Pharmacological inhibition of Tpl2 in the coculture markedly reduced lipolysis and cytokine production and prevented the decrease in adipocyte insulin signaling. Tpl2 knockdown in cocultured adipocytes reduced lipolysis but had a weak effect on cytokine production and did not prevent the alteration of insulin signaling. By contrast, Tpl2 silencing in cocultured macrophages resulted in a marked inhibition of cytokine production and prevented the alteration of adipocyte insulin signaling. Further, when Tpl2 was inhibited in LPS-activated macrophages, the produced CM did not alter adipocyte insulin signaling and did not induce an inflammatory response in adipocytes. By contrast, Tpl2 silencing in adipocytes did not prevent the deleterious effects of a CM from LPS-activated macrophages. Together, these data establish that Tpl2, mainly in macrophages, is involved in the cross talk between adipocytes and macrophages that promotes inflammatory changes and alteration of insulin signaling in adipocytes.
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Affiliation(s)
- Franck Ceppo
- INSERM Unité 1065/Centre Méditerranéen de Médecine Moléculaire (C3M) and Université de Nice Sophia Antipolis (F.C., F.B., J.J., K.D, M.C., J.-F.T.), F-06204, Nice, France
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Sanz-Garcia C, Nagy LE, Lasunción MA, Fernandez M, Alemany S. Cot/tpl2 participates in the activation of macrophages by adiponectin. J Leukoc Biol 2014; 95:917-30. [PMID: 24532642 DOI: 10.1189/jlb.0913486] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Whereas the main function of APN is to enhance insulin activity, it is also involved in modulating the macrophage phenotype. Here, we demonstrate that at physiological concentrations, APN activates Erk1/2 via the IKKβ-p105/NF-κΒ1-Cot/tpl2 intracellular signal transduction cassette in macrophages. In peritoneal macrophages stimulated with APN, Cot/tpl2 influences the ability to phagocytose beads. However, Cot/tpl2 did not modulate the known capacity of APN to decrease lipid content in peritoneal macrophages in response to treatment with oxLDL or acLDL. A microarray analysis of gene-expression profiles in BMDMs exposed to APN revealed that APN modulated the expression of ∼3300 genes; the most significantly affected biological functions were the inflammatory and the infectious disease responses. qRT-PCR analysis of WT and Cot/tpl2 KO macrophages stimulated with APN for 0, 3, and 18 h revealed that Cot/tpl2 participated in the up-regulation of APN target inflammatory mediators included in the cytokine-cytokine receptor interaction pathway (KEGG ID 4060). In accordance with these data, macrophages stimulated with APN increased secretion of cytokines and chemokines, including IL-1β, IL-1α, TNF-α, IL-10, IL-12, IL-6, and CCL2. Moreover, Cot/tpl2 also played an important role in the production of these inflammatory mediators upon stimulation of macrophages with APN. It has been reported that different types of signals that stimulate TLRs, IL-1R, TNFR, FcγR, and proteinase-activated receptor-1 activate Cot/tpl2. Here, we demonstrate that APN is a new signal that activates the IKKβ-p105/NF-κΒ1-Cot/tpl2-MKK1/2-Erk1/2 axis in macrophages. Furthermore, this signaling cassette modulates the biological functions triggered by APN in macrophages.
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Affiliation(s)
- Carlos Sanz-Garcia
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Madrid, Spain
| | - Laura E Nagy
- Pathobiology and Gastroenterology, Cleveland Clinic, Cleveland, Ohio, USA; and
| | - Miguel A Lasunción
- Servicio de Bioquímica-Investigación, Hospital Universitario Ramón y Cajal, IRyCIS, and Centro de Investigación Biomédica en Red de Fisiopatología de la Obesidad y Nutrición, Instituto de Salud Carlos III, Madrid, Spain
| | - Margarita Fernandez
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Madrid, Spain
| | - Susana Alemany
- Instituto de Investigaciones Biomédicas Alberto Sols, Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid, Madrid, Spain;
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Martel G, Rousseau S. TPL2 signalling: from Toll-like receptors-mediated ERK1/ERK2 activation to Cystic Fibrosis lung disease. Int J Biochem Cell Biol 2014; 52:146-51. [PMID: 24530836 DOI: 10.1016/j.biocel.2014.02.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Revised: 01/30/2014] [Accepted: 02/02/2014] [Indexed: 01/20/2023]
Abstract
Cystic Fibrosis (CF) is the most common lethal genetic recessive disorder, with a carrier frequency of 1 in 27 among North American Caucasians. Mitogen-activated protein kinases (MAPKs) and pro-inflammatory cytokines have crucial functions in the innate immune response of epithelial cells. They determine the inflammation status and the host response to pathogenic infections. However, in CF, bacterial-driven inflammation leads to tissue destruction, reduction in lung function and mortality. Recognition of invading pathogens is mediated in part by Toll-like receptors (TLR) activation of intracellular signalling cascade leading to cytokines' synthesis. The protein kinase Tumour Progression Locus 2 (TPL2) is a key molecule in relaying inflammatory stimuli to ERK1/ERK2 MAPKs. In this review, we summarized the recent findings on TPL2 signalling and how TPL2 can contribute to the excessive inflammation found in CF. Pharmacologically targeting this kinase could have a significant benefit for CF patients dealing with chronic bacterial infections such as Pseudomonas aeruginosa. This article is part of a Directed Issue entitled: Cystic Fibrosis: From o-mics to cell biology, physiology, and therapeutic advances.
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Affiliation(s)
- Guy Martel
- Meakins-Christie Laboratories, McGill University Health Centre Research Institute, Montreal, Canada
| | - Simon Rousseau
- Meakins-Christie Laboratories, McGill University Health Centre Research Institute, Montreal, Canada.
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Abstract
TLRs (Toll-like receptors) detect invading micro-organisms which triggers the production of pro-inflammatory mediators needed to combat infection. Although these signalling networks are required to protect the host against invading pathogens, dysregulation of TLR pathways contributes to the development of chronic inflammatory diseases and autoimmune disorders. Molecular mechanisms have therefore evolved to restrict the strength of TLR signalling. In the present review, I highlight recent advances in our understanding of the protein kinase networks required to suppress the innate immune response by negatively regulating TLR signalling and/or promoting the secretion of anti-inflammatory cytokines. I present my discoveries on the key roles of the IKK (inhibitor of nuclear factor κB kinase)-related kinases and the SIKs (salt-inducible kinases) in limiting innate immunity within the greater context of the field.
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Liu L, Zhao Y, Xie K, Sun X, Gao Y, Wang Z. Estrogen-induced nongenomic calcium signaling inhibits lipopolysaccharide-stimulated tumor necrosis factor α production in macrophages. PLoS One 2013; 8:e83072. [PMID: 24376635 PMCID: PMC3871562 DOI: 10.1371/journal.pone.0083072] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 11/07/2013] [Indexed: 12/21/2022] Open
Abstract
Estrogen is traditionally thought to exert genomic actions through members of the nuclear receptor family. Here, we investigated the rapid nongenomic effects of 17β-estradiol (E2) on tumor necrosis factor α (TNF-α) production following lipopolysaccharide (LPS) stimulation in mouse bone marrow-derived macrophages (BMMs). We found that LPS induced TNF-α production in BMMs via phosphorylation of p38 mitogen-activated protein kinase (MAPK). E2 itself did not affect the MAPK pathway, although it attenuated LPS-induced TNF-α production through suppression of p38 MAPK activation. Recently, G protein-coupled receptor 30 (GPR30) was suggested to be a membrane estrogen receptor (mER) that can mediate nongenomic estradiol signaling. We found that BMMs expressed both intracellular estrogen receptors (iER) and mER GPR30. The specific GPR30 antagonist G-15 significantly blocked effects of estradiol on LPS-induced TNF-α production, whereas an iER antagonist did not. Moreover, E2 induced a rapid rise in intracellular free Ca2+ that was due to the influx of extracellular Ca2+ and was not inhibited by an iER antagonist or silencing of iER. Ca2+ influx was also induced by an impermeable E2 conjugated to BSA (E2-BSA), which has been used to investigate the nongenomic effects of estrogen. Consequently, Ca2+, a pivotal factor in E2-stimulated nongenomic action, was identified as the key mediator. The inhibitory effects of E2 on LPS-induced TNF-α production and p38 MAPK phosphorylation were dependent on E2-triggered Ca2+ influx because BAPTA, an intracellular Ca2+ chelator, prevented these effects. Taken together, these data indicate that E2 can down-regulate LPS-induced TNF-α production via blockade of p38 MAPK phosphorylation through the mER-mediated nongenomic Ca2+ signaling pathway in BMMs.
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Affiliation(s)
- Limin Liu
- Department of Pathology and Pathophysiology, Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Ying Zhao
- Department of Pathology and Pathophysiology, Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Keming Xie
- Department of Pathology and Pathophysiology, Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Xiaodong Sun
- Department of Pathology and Pathophysiology, Medical College of Soochow University, Suzhou, Jiangsu, China
| | - Yuzhen Gao
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu, China
- * E-mail: (YZG); (ZFW)
| | - Zufeng Wang
- Department of Forensic Medicine, Medical College of Soochow University, Suzhou, Jiangsu, China
- * E-mail: (YZG); (ZFW)
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Schwarz J, Schmidt S, Will O, Koudelka T, Köhler K, Boss M, Rabe B, Tholey A, Scheller J, Schmidt-Arras D, Schwake M, Rose-John S, Chalaris A. Polo-like kinase 2, a novel ADAM17 signaling component, regulates tumor necrosis factor α ectodomain shedding. J Biol Chem 2013; 289:3080-93. [PMID: 24338472 DOI: 10.1074/jbc.m113.536847] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
ADAM17 (a disintegrin and metalloprotease 17) controls pro- and anti-inflammatory signaling events by promoting ectodomain shedding of cytokine precursors and cytokine receptors. Despite the well documented substrate repertoire of ADAM17, little is known about regulatory mechanisms, leading to substrate recognition and catalytic activation. Here we report a direct interaction of the acidophilic kinase Polo-like kinase 2 (PLK2, also known as SNK) with the cytoplasmic portion of ADAM17 through the C-terminal noncatalytic region of PLK2 containing the Polo box domains. PLK2 activity leads to ADAM17 phosphorylation at serine 794, which represents a novel phosphorylation site. Activation of ADAM17 by PLK2 results in the release of pro-TNFα and TNF receptors from the cell surface, and pharmacological inhibition of PLK2 leads to down-regulation of LPS-induced ADAM17-mediated shedding on primary macrophages and dendritic cells. Importantly, PLK2 expression is up-regulated during inflammatory conditions increasing ADAM17-mediated proteolytic events. Our findings suggest a new role for PLK2 in the regulation of inflammatory diseases by modulating ADAM17 activity.
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Affiliation(s)
- Jeanette Schwarz
- From the Institute of Biochemistry, Christian-Albrechts-Universität zu Kiel, 24118 Kiel, Germany
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Schwarz J, Broder C, Helmstetter A, Schmidt S, Yan I, Müller M, Schmidt-Arras D, Becker-Pauly C, Koch-Nolte F, Mittrücker HW, Rabe B, Rose-John S, Chalaris A. Short-term TNFα shedding is independent of cytoplasmic phosphorylation or furin cleavage of ADAM17. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2013; 1833:3355-3367. [DOI: 10.1016/j.bbamcr.2013.10.005] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 09/23/2013] [Accepted: 10/05/2013] [Indexed: 01/06/2023]
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Hirschhorn J, Mohanty S, Bhat NR. The role of tumor progression locus 2 protein kinase in glial inflammatory response. J Neurochem 2013; 128:919-26. [PMID: 24188160 DOI: 10.1111/jnc.12522] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2013] [Revised: 10/29/2013] [Accepted: 10/30/2013] [Indexed: 01/10/2023]
Abstract
Tumor progression locus 2 (Tpl2)/cancer Osaka thyroid kinase is a newer member of MAP3K family that is now known for its essential role in tumor necrosis factor-aplha (TNFα) expression in macrophages, but its pro-inflammatory signaling, if any, in glia is unknown. When cultures of murine microglia and astrocytes were exposed to lipopolysaccharide, there was a rapid activation (i.e., phosphorylation) of Tpl2 in parallel to the activation of down-stream effector MAPKs, that is, extracellular signal regulated kinase (ERK), p38 MAPK and C-Jun N-terminal kinase (JNK). Pre-incubation of the cultures with a Tpl2 inhibitor selectively suppressed the activation of the primary down-stream target, that is, ERK relative to p38 MAPK and JNK. That Tpl2 activation was functionally involved in glial inflammatory response was indicated by a reduced release of the cytokines, i.e. TNFα and the expression of inducible nitric oxide synthase in the presence of the kinase inhibitor. Furthermore, over-expression of a wild-type Tpl2 construct in C-6 glia resulted in an enhanced transcriptional activation of inducible nitric oxide synthase, while transfection with a dominant negative form of Tpl-2 had the opposite effect. The findings assign an important pro-inflammatory signaling function for Tpl2 pathway in glial cells.
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Affiliation(s)
- Joshua Hirschhorn
- Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina, USA
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Martel G, Roussel L, Rousseau S. The protein kinases TPL2 and EGFR contribute to ERK1/ERK2 hyper-activation in CFTRΔF508-expressing airway epithelial cells exposed to Pseudomonas aeruginosa. Biochem Biophys Res Commun 2013; 441:689-692. [DOI: 10.1016/j.bbrc.2013.10.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2013] [Accepted: 10/08/2013] [Indexed: 01/10/2023]
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