1
|
Zhang H, Pertiwi H, Majdeddin M, Michiels J. Mucosa-associated lymphoid tissue lymphoma translocation protein 1 inhibition alleviates intestinal impairment induced by chronic heat stress in finisher broilers. Poult Sci 2024; 103:103252. [PMID: 37980762 PMCID: PMC10685026 DOI: 10.1016/j.psj.2023.103252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/24/2023] [Accepted: 10/26/2023] [Indexed: 11/21/2023] Open
Abstract
Heat stress (HS) in poultry has deleterious effects on intestinal development and barrier function, along with inflammatory outbursts. In the present study, chronic HS reduced body weight of broilers and activated mucosa-associated lymphoid tissue lymphoma translocation protein 1 (Malt1) /nuclear factor kappa B (NF-κB) signaling pathways to elicit the inflammatory cytokine response in jejunum. Subsequently, this study investigated the protective effects of the Malt1 inhibitor on the intestine of broilers under HS conditions. The 21-day-old male broilers were allocated to 8 pens housed in HS room (34°C for 7 h/d) until 28 d of age. During this period, 4 birds were selected from each heat-stressed pen and received intraperitoneal injection of 20 mg/kg body weight Mepazine (a Malt1 inhibitor) or the equivalent volume of phosphate buffer saline (PBS) every other day. When compared to PBS broilers, birds received Mepazine injection exhibited increased relative weight and higher villus height in jejunum (both P < 0.05). Mepazine treatment also increased (P < 0.05) the mRNA of zonula occludens-1 (ZO-1), claudin-1, and cadherin 1 of jejunum, which was companied by the reduced caspase-3 transcription under HS condition. Meanwhile, the gene expression levels of toll-like receptor 4 (TLR4), Malt1, NF-κB, interleukin-6 (IL-6), and tumor necrosis factor alpha (TNF-α) in the jejunum were significantly downregulated by Mepazine administration (P < 0.05). Although there were no significant differences in the relative weight of the thymus and bursa, the transcription levels of T helper 1 (Th1)- and Th17-related cytokines were lower in thymus of birds injected with Mepazine. The cytokines of Treg cytokine transforming growth factor beta (TGF-β) and forkhead box protein P3 (Foxp3) in both the thymus and bursa were not influenced. These results suggest that inhibition of Malt1 protease activity can protect intestinal integrity by promoting the production of tight junction proteins and attenuating NF-κB-mediated intestinal inflammation response under HS conditions.
Collapse
Affiliation(s)
- Huaiyong Zhang
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent 9000, Belgium.; College of Animal Science and Technology, Henan Agricultural University, Zhengzhou 450046, Henan, China
| | - Herinda Pertiwi
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent 9000, Belgium
| | - Maryam Majdeddin
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent 9000, Belgium
| | - Joris Michiels
- Laboratory for Animal Nutrition and Animal Product Quality, Department of Animal Sciences and Aquatic Ecology, Ghent University, Ghent 9000, Belgium..
| |
Collapse
|
2
|
Xu Z, Qiao S, Qian W, Zhu Y, Yan W, Shen S, Wang T. Card9 protects fungal peritonitis through regulating Malt1-mediated activation of autophagy in macrophage. Int Immunopharmacol 2022; 110:108941. [PMID: 35850054 DOI: 10.1016/j.intimp.2022.108941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 11/05/2022]
Abstract
Fungal peritonitis is an inflammatory condition of the peritoneum which occurs secondary to peritoneal dialysis. Most cases of peritonitis are caused by microbial invasion into the peritoneal cavity, resulting in high morbidity and mortality. Unlike bacterial peritonitis, little is known on fungal peritonitis. Card9, an adapter protein, plays a critical role in anti-fungal immunity. In this study, by using zymosan-induced peritonitis and C. albicans-induced peritonitis mouse model, we demonstrated that fungal peritonitis was exacerbated in Card9-/- mice, compared with WT mice. Next, we found the autophagy activation of peritonealmacrophages was impaired in Card9-/- peritonitis mice. The autophagy agonist, MG132, ameliorated peritonitis in Card9-/- mice. The result of microarray analysis indicates Malt1 was significantly decreased in Card9-/- peritonitis mice. Furthermore, we demonstrated that Malt1 interacts with P62 and mediates the function of P62 to clear ubiquitinated proteins. After overexpression of Malt1, impaired autophagy activation caused by Card9 deficient was significantly rescued. Together, our results indicate that Card9 protects fungal peritonitis by regulating Malt1-mediated autophagy in macrophages. Our research provides a new idea for the pathogenesis of fungal peritonitis, which is of great significance for the clinical treatment of fungal peritonitis.
Collapse
Affiliation(s)
- Zhen Xu
- Department of Oncology, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224001, China; The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Shuping Qiao
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Wei Qian
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Yanan Zhu
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China
| | - Wenyue Yan
- Department of Oncology, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224001, China.
| | - Sunan Shen
- The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China.
| | - Tingting Wang
- Department of Oncology, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, The First People's Hospital of Yancheng, Yancheng, Jiangsu 224001, China; The State Key Laboratory of Pharmaceutical Biotechnology, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China; Jiangsu Key Laboratory of Molecular Medicine, Division of Immunology, Medical School, Nanjing University, Nanjing 210093, China.
| |
Collapse
|
3
|
Tan H, Xie Y, Zhang X, Wu S, Zhao H, Wu J, Wang W, Lin C. Integrative Analysis of MALT1 as a Potential Therapeutic Target for Prostate Cancer and its Immunological Role in Pan-Cancer. Front Mol Biosci 2021; 8:714906. [PMID: 34926571 PMCID: PMC8674617 DOI: 10.3389/fmolb.2021.714906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 11/15/2021] [Indexed: 12/24/2022] Open
Abstract
Background: Mucosa-associated lymphoma antigen 1 (MALT1) is an oncogene in subsets of diffuse large B cell lymphoma (DLBCL) and mucosa-associated lymphoid tissue type (MALT) lymphoma. However, the role of MALT1 across cancers, especially in prostate cancer is still poorly understood. Methods: Here, we used several public datasets to evaluate MALT1 expression. Then, PCa cell lines and nude mice were used to investigate the cellular functions in vitro and in vivo. Microarray data were downloaded from The Cancer Genome Atlas and MALT1 was subjected to gene set enrichment analysis (GSEA) and Gene Ontology (GO) analysis to identify the biological functions and relevant pathways. Additionally, the correlations between MALT1 expression and mismatch repair (MMR) gene mutation, immune checkpoint gene expression, tumor mutational burden (TMB), and microsatellite instability (MSI) were investigated by Pearson correlation analysis. Moreover, the correlation between MALT1 expression and tumor immune infiltration was analyzed by the Tumor Immune Evaluation Resource (TIMER) database. Results: MALT1 overexpression was significantly correlated with MMR gene mutation levels and crucially promoted proliferation and colony genesis while reducing PCa cell apoptosis levels in vivo and in vitro. MALT1 expression showed strong correlations with immune checkpoint genes, TMB, and MSI in most cancers. The GO analysis indicated that MALT1-coexpressed genes were involved in heterotypic cell-cell adhesion, actin filament-based movement regulation, and action potential regulation. GSEA revealed that MALT1 expression was associated with several signaling pathways, including the NF-κB signaling, Wnt/β-catenin and TGF-β signaling pathways, in PCa. Additionally, MALT1 expression was significantly correlated with the infiltration of immune cells, including B cells, CD8+ T cells, dendritic cells and macrophages, and negatively correlated with CD4+ cell infiltration in PCa. Conclusion: MALT1 expression is higher in pancancer samples than in normal tissues. MALT1 promoted proliferation and colony genesis while reducing PCa cell apoptosis levels, and MALT1 suppression could inhibit xenograft tumor establishment in nude mice. Furthermore, MALT1 expression is closely related to the occurrence and development of multiple tumors in multiple ways. Therefore, MALT1 may be an emerging therapeutic target for a variety of cancers especially PCa.
Collapse
Affiliation(s)
- Haotian Tan
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Yaqi Xie
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Binzhou Medical University, Yantai, China
| | - Xuebao Zhang
- Department of Reproductive Medicine, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Shuang Wu
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Hongwei Zhao
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Jitao Wu
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| | - Wenting Wang
- Central Laboratory, Yantai Yuhuangding Hospital, Yantai, China
| | - Chunhua Lin
- Department of Urology, The Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, China
| |
Collapse
|
4
|
Monajemi M, Fisk S, Pang YCF, Leung J, Menzies SC, Ben-Othman R, Cai B, Kollmann TR, Rozmus J, Sly LM. Malt1 deficient mice develop osteoporosis independent of osteoclast-intrinsic effects of Malt1 deficiency. J Leukoc Biol 2019; 106:863-877. [PMID: 31313375 DOI: 10.1002/jlb.5vma0219-054r] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/13/2019] [Accepted: 06/23/2019] [Indexed: 11/09/2022] Open
Abstract
This study tested the hypothesis that mucosa associated lymphoid tissue 1 (Malt1) deficiency causes osteoporosis in mice by increasing osteoclastogenesis and osteoclast activity. A patient with combined immunodeficiency (CID) caused by MALT1 deficiency had low bone mineral density resulting in multiple low impact fractures that was corrected by hematopoietic stem cell transplant (HSCT). We have reported that Malt1 deficient Mϕs, another myeloid cell type, are hyper-responsive to inflammatory stimuli. Our objectives were to determine whether Malt1 deficient mice develop an osteoporosis-like phenotype and whether it was caused by Malt1 deficiency in osteoclasts. We found that Malt1 deficient mice had low bone volume by 12 weeks of age, which was primarily associated with reduced trabecular bone. Malt1 protein is expressed and active in osteoclasts and is induced by receptor activator of NF-κB ligand (RANKL) in preosteoclasts. Malt1 deficiency did not impact osteoclast differentiation or activity in vitro. However, Malt1 deficient (Malt1-/- ) mice had more osteoclasts in vivo and had lower levels of serum osteoprotegerin (OPG), an endogenous inhibitor of osteoclastogenesis. Inhibition of Malt1 activity in Mϕs induced MCSF production, required for osteoclastogenesis, and decreased OPG production in response to inflammatory stimuli. In vitro, MCSF increased and OPG inhibited osteoclastogenesis, but effects were not enhanced in Malt1 deficient osteoclasts. These data support the hypothesis that Malt1 deficient mice develop an osteoporotic phenotype with increased osteoclastogenesis in vivo, but suggest that this is caused by inflammation rather than an effect of Malt1 deficiency in osteoclasts.
Collapse
Affiliation(s)
- Mahdis Monajemi
- Department of Pediatrics, Division of Gastroenterology, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Shera Fisk
- Department of Pediatrics, Division of Gastroenterology, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Yvonne C F Pang
- Department of Pediatrics, Division of Gastroenterology, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Jessica Leung
- Department of Pediatrics, Division of Gastroenterology, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Susan C Menzies
- Department of Pediatrics, Division of Gastroenterology, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Rym Ben-Othman
- Department of Pediatrics, Division of Infectious Diseases, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Bing Cai
- Department of Pediatrics, Division of Infectious Diseases, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Tobias R Kollmann
- Telethon Kids Institute, Perth Children's Hospital, the University of Western Australia, Nedlands, Western Australia, Australia
| | - Jacob Rozmus
- Division of Hematology and Oncology, BC Children's Hospital Research Institute, the University of British Columbia, Vancouver, British Columbia, Canada
| | - Laura M Sly
- Department of Pediatrics, Division of Gastroenterology, the University of British Columbia, Vancouver, British Columbia, Canada.,Telethon Kids Institute, Perth Children's Hospital, the University of Western Australia, Nedlands, Western Australia, Australia
| |
Collapse
|
5
|
Affiliation(s)
- Frédéric Bornancin
- Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Basel, Switzerland
| | - Andrew L Snow
- Department of Pharmacology and Molecular Therapeutics, Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| |
Collapse
|
6
|
Zotti T, Polvere I, Voccola S, Vito P, Stilo R. CARD14/CARMA2 Signaling and its Role in Inflammatory Skin Disorders. Front Immunol 2018; 9:2167. [PMID: 30319628 PMCID: PMC6168666 DOI: 10.3389/fimmu.2018.02167] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 09/03/2018] [Indexed: 12/23/2022] Open
Abstract
CARMA proteins represent a family of scaffold molecules which play several crucial biological functions, including regulation of immune response and inflammation, tissue homeostasis, and modulation of G-Protein Coupled Receptor (GPCR) signaling. Among the CARMA proteins, CARD14/CARMA2 and its alternatively spliced isoforms are specifically expressed in epithelial cells and keratinocytes. Recent evidences have shown that CARD14/CARMA2 mediates induction of inflammatory response in keratinocytes, and that mutations in CARD14/CARMA2 gene segregate with familial transmission of chronic inflammatory disorders of the human skin. Similarly to CARD11/CARMA1 and CARD10/CARMA3, CARD14/CARMA2 signaling occurs trough formation of a trimeric complex which includes BCL10 and MALT1 proteins. However, it is becoming increasingly evident that in addition to the CBM complex components, a number of accessory molecules are able to finely modulate the signals conveyed on and amplified by CARD14/CARMA2. The study of these molecules is important both to understand the molecular mechanisms that underlie the role of CARMA2 in keratinocytes and because they represent potential therapeutic targets for the development of therapeutic strategies aiming at the treatment of inflammatory diseases of the human skin. In this review, we provide an overview on the molecular mechanisms mediating CARD14/CARMA2 signaling and its implication in our understanding of the pathogenesis of human inflammatory skin disorders.
Collapse
Affiliation(s)
- Tiziana Zotti
- Genus Biotechnology, Università degli Studi del Sannio, Benevento, Italy.,Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Immacolata Polvere
- Genus Biotechnology, Università degli Studi del Sannio, Benevento, Italy.,Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Serena Voccola
- Genus Biotechnology, Università degli Studi del Sannio, Benevento, Italy.,Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Pasquale Vito
- Genus Biotechnology, Università degli Studi del Sannio, Benevento, Italy.,Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| | - Romania Stilo
- Genus Biotechnology, Università degli Studi del Sannio, Benevento, Italy.,Dipartimento di Scienze e Tecnologie, Università degli Studi del Sannio, Benevento, Italy
| |
Collapse
|
7
|
Nakamura Y, Yokoyama K, Igaki K, Tsuchimori N. Role of Malt1 protease activity in pathogenesis of inflammatory disorders mediated by FcγR signaling. Int Immunopharmacol 2018; 56:193-196. [PMID: 29414650 DOI: 10.1016/j.intimp.2018.01.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Revised: 01/10/2018] [Accepted: 01/17/2018] [Indexed: 01/26/2023]
Abstract
MALT lymphoma-translocation protein 1 (Malt1) protease activity is triggered by stimulation of various immune receptors. Activation of Malt1 protease induces cleavage of negative regulators for immune responses, resulting in lymphocytes activation. Although Malt1 protease mediates the signaling process downstream of the T cell, B cell, and dectin receptors, its contribution in Fcγ receptor (FcγR) signaling has not been elucidated. In this study, we investigated the role of Malt1 protease activity in FcγR signaling using Malt1 protease-deficient (PD) mouse. In addition, role of Malt1 protease for the development of FcγR-mediated autoimmune disease was also investigated in vivo. Malt1 protease cleaves their substrates, such as RelB and cylindromatosis (CYLD). However, the Malt1 proteolytic activity was silenced in the Malt1 PD mice. Production of inflammatory cytokines via FcγR stimulation was decreased on dendritic cells prepared from Malt1 PD mice. In FcγR-dependent murine immune thrombocytopenia (ITP) model, gene expressions of the inflammatory cytokines in the spleen of Malt1 PD mice were lower than those of WT mice. Then, Malt1 PD mice protected the development of thrombocytopenia. These results clearly figured out that Malt1 protease activity plays an important role in the activation of innate immune cells via FcγR, and the development of FcγR-mediated autoimmune diseases. Therefore, Malt1 is an attractive target for the treatment of inflammatory diseases mediated by FcγR.
Collapse
Affiliation(s)
- Yoshiki Nakamura
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan; Pharmaceutical Sciences, Takeda Pharmaceutical Company, Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Kazumasa Yokoyama
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Keiko Igaki
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan
| | - Noboru Tsuchimori
- Pharmaceutical Research Division, Takeda Pharmaceutical Company, Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| |
Collapse
|
8
|
Sintsova A, Guo CX, Sarantis H, Mak TW, Glogauer M, Gray-Owen SD. Bcl10 synergistically links CEACAM3 and TLR-dependent inflammatory signalling. Cell Microbiol 2018; 20:e12788. [PMID: 28886618 DOI: 10.1111/cmi.12788] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2017] [Revised: 08/30/2017] [Accepted: 09/06/2017] [Indexed: 01/27/2023]
Abstract
The neutrophil-specific innate immune receptor CEACAM3 functions as a decoy to capture Gram-negative pathogens, such as Neisseria gonorrhoeae, that exploit CEACAM family members to adhere to the epithelium. Bacterial binding to CEACAM3 results in their efficient engulfment and triggers activation of an nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB)-dependent inflammatory response by human neutrophils. Herein, we report that CEACAM3 cross-linking is not sufficient for induction of cytokine production and show that the inflammatory response induced by Neisseria gonorrhoeae infection is elicited by an integration of signals from CEACAM3 and toll-like receptors. Using neutrophils from a human CEACAM-expressing mouse line (CEABAC), we use a genetic approach to reveal a molecular bifurcation of the CEACAM3-mediated antimicrobial and inflammatory responses. Ex vivo experiments with CEABAC-Rac2-/- , CEABAC-Bcl10-/- , and CEABAC-Malt1-/- neutrophils indicate that these effectors are not necessary for gonococcal engulfment, yet all 3 effectors contribute to CEACAM3-mediated cytokine production. Interestingly, although Bcl10 and Malt1 are often inextricably linked, Bcl10 enabled synergy between toll-like receptor 4 and CEACAM3, whereas Malt1 did not. Together, these findings reveal an integration of the specific innate immune receptor CEACAM3 into the network of more conventional pattern recognition receptors, providing a mechanism by which the innate immune system can unleash its response to a relentless pathogen.
Collapse
Affiliation(s)
- Anna Sintsova
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Cynthia X Guo
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Helen Sarantis
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| | - Tak W Mak
- The Campbell Family Institute for Breast Cancer Research, University Health Network, Toronto, Ontario, Canada
| | - Michael Glogauer
- Faculty of Dentistry, University of Toronto, Toronto, Ontario, Canada
| | - Scott D Gray-Owen
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
| |
Collapse
|
9
|
Xin BT, Schimmack G, Du Y, Florea BI, van der Marel GA, Driessen C, Krappmann D, Overkleeft HS. Development of new Malt1 inhibitors and probes. Bioorg Med Chem 2016; 24:3312-29. [PMID: 27085674 DOI: 10.1016/j.bmc.2016.03.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 03/17/2016] [Accepted: 03/18/2016] [Indexed: 01/28/2023]
Abstract
Mucosa-associated lymphoid tissue lymphoma translocation protein 1 (Malt1) is a promising therapeutic target for the treatment of activated B cell-like diffuse large B cell lymphoma (ABC-DLBCL). Several research groups have reported on the development of Malt1 inhibitors and activity-based probes for in vitro and in situ monitoring and modulating Malt1 activity. In this paper, we report on two activity-based Malt1 probes (6 and 7) and a focused library of 19 new Malt1 inhibitors. Our peptide-based probe 6 labels Malt1 in an activity-based manner. In contrast, probe 7, derived from the known covalent inhibitor MI-2, labels both wild type and catalytically inactive Cys to Ala mutant Malt1, suggesting that MI-2 inhibits Malt1 by reacting with a nucleophilic residue other than the active site cysteine. Furthermore, two of our inhibitors (9, apparent IC50 3.0μM, and 13, apparent IC50 2.1μM) show good inhibitory activity against Malt1 and outperform MI-2 (apparent IC50 7.8μM) in our competitive activity-based protein profiling assay.
Collapse
|
10
|
Kim J, Lee JN, Ye J, Hao R, DeBose-Boyd R, Ye J. Sufficient production of geranylgeraniol is required to maintain endotoxin tolerance in macrophages. J Lipid Res 2013; 54:3430-7. [PMID: 24062519 PMCID: PMC3826689 DOI: 10.1194/jlr.m042549] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 09/19/2013] [Indexed: 12/19/2022] Open
Abstract
Endotoxin tolerance allows macrophages to produce large quantities of proinflammatory cytokines immediately after their contact with lipopolysaccharides (LPSs), but prevents their further production after repeated exposure to LPSs. While this response is known to prevent overproduction of proinflammatory cytokines, the mechanism through which endotoxin tolerance is established has not been identified. In the current study, we demonstrate that sufficient production of geranylgeraniol (GGOH) in macrophages is required to maintain endotoxin tolerance. We show that increased synthesis of 3-hydroxy-3-methyl-glutaryl-CoA reductase (HMGCR) protein following LPS treatment is required to produce enough GGOH to inhibit expression of Malt1, a protein known to stimulate expression of proinflammatory cytokines, in macrophages repeatedly exposed to LPSs. Depletion of GGOH caused by inhibition of HMGCR led to increased Malt1 expression in macrophages subjected to repeated exposure to LPSs. Consequently, endotoxin tolerance was impaired, and production of interleukin 1-β and other proinflammatory cytokines was markedly elevated in these cells. These results suggest that insufficient production of GGOH in macrophages may cause autoinflammatory diseases.
Collapse
Affiliation(s)
| | | | - James Ye
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Rosy Hao
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Russell DeBose-Boyd
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| | - Jin Ye
- Department of Molecular Genetics, University of Texas Southwestern Medical Center, Dallas, TX 75390
| |
Collapse
|