1
|
Yan Q, Song C, Liu H, Li Y, Ma J, Zhao Y, Song Z, Chen Y, Zhu R, Zhang Z. Adipose-derived stem cell exosomes loaded with icariin attenuated M1 polarization of macrophages via inhibiting the TLR4/Myd88/NF-κB signaling pathway. Int Immunopharmacol 2024; 137:112448. [PMID: 38870883 DOI: 10.1016/j.intimp.2024.112448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 06/03/2024] [Accepted: 06/06/2024] [Indexed: 06/15/2024]
Abstract
Abnormal macrophage polarization is one of the common pathological bases of various inflammatory diseases. The current research focus involves targeting macrophages to remodel their phenotype as a treatment approach for inflammatory diseases. Notably, exosomes can be delivered to specific types of cells or tissues or inflammatory area to realize targeted drug delivery. Although icariin (ICA) exhibits regulatory potential in macrophage polarization, the practical application of ICA is impeded by its water insolubility, poor permeability, and low bioavailability. Exploiting the inherent advantages of exosomes as natural drug carriers, we introduce a novel drug delivery system-adipose-derived stem cells-exosomes (ADSCs-EXO)-ICA. High-performance liquid chromatography analysis confirmed a loading rate of 92.7 ± 0.01 % for ADSCs-EXO-ICA, indicating the successful incorporation of ICA. As demonstrated by cell counting kit-8 assays, ADSCs-EXO exerted a significantly higher promotion effect on macrophage proliferation. The subsequent experimental results revealed the superior anti-inflammatory effect of ADSCs-EXO-ICA compared to individual treatments with EXO or ICA in the lipopolysaccharide + interferon-gamma-induced M1 inflammation model. Additionally, results from enzyme-linked immunosorbent assay, quantitative polymerase chain reaction, and western blot analyses revealed that ADSCs-EXO-ICA effectively inhibited macrophage polarization toward the M1-type and concurrently promoted polarization toward the M2-type. The underlying mechanism involved the modulation of macrophage polarization through inhibition of the Toll-like receptor 4/myeloid differentiation factor 88/nuclear transcription factor-kappa B signaling pathway, thereby mitigating inflammation. These findings underscore the potential therapeutic value of ADSCs-EXO-ICA as a novel intervention for inflammatory diseases.
Collapse
Affiliation(s)
- Qiqi Yan
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China.
| | - Changheng Song
- Guang'anmen Hospital of China Academy of Chinese Medical Sciences, Beijing, China.
| | - Haixia Liu
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yubo Li
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jiayi Ma
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yukun Zhao
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhiqian Song
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanjing Chen
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ruyuan Zhu
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China.
| | - Zhiguo Zhang
- Institute of Basic Theory for Chinese Medicine, China Academy of Chinese Medical Sciences, Beijing, China.
| |
Collapse
|
2
|
Chen S, Zeng J, Li R, Zhang Y, Tao Y, Hou Y, Yang L, Zhang Y, Wu J, Meng X. Traditional Chinese medicine in regulating macrophage polarization in immune response of inflammatory diseases. JOURNAL OF ETHNOPHARMACOLOGY 2024; 325:117838. [PMID: 38310986 DOI: 10.1016/j.jep.2024.117838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 01/21/2024] [Accepted: 01/26/2024] [Indexed: 02/06/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Numerous studies have demonstrated that various traditional Chinese medicines (TCMs) exhibit potent anti-inflammatory effects against inflammatory diseases mediated through macrophage polarization and metabolic reprogramming. AIM OF THE STUDY The objective of this review was to assess and consolidate the current understanding regarding the pathogenic mechanisms governing macrophage polarization in the context of regulating inflammatory diseases. We also summarize the mechanism action of various TCMs on the regulation of macrophage polarization, which may contribute to facilitate the development of natural anti-inflammatory drugs based on reshaping macrophage polarization. MATERIALS AND METHODS We conducted a comprehensive review of recently published articles, utilizing keywords such as "macrophage polarization" and "traditional Chinese medicines" in combination with "inflammation," as well as "macrophage polarization" and "inflammation" in conjunction with "natural products," and similar combinations, to search within PubMed and Google Scholar databases. RESULTS A total of 113 kinds of TCMs (including 62 components of TCMs, 27 TCMs as well as various types of extracts of TCMs and 24 Chinese prescriptions) was reported to exert anti-inflammatory effects through the regulation of key pathways of macrophage polarization and metabolic reprogramming. CONCLUSIONS In this review, we have analyzed studies concerning the involvement of macrophage polarization and metabolic reprogramming in inflammation therapy. TCMs has great advantages in regulating macrophage polarization in treating inflammatory diseases due to its multi-pathway and multi-target pharmacological action. This review may contribute to facilitate the development of natural anti-inflammatory drugs based on reshaping macrophage polarization.
Collapse
Affiliation(s)
- Shiyu Chen
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Jiuseng Zeng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Rui Li
- The Affiliated Meishan Hospital of Chengdu University of Traditional Chinese Medicine, Meishan, 620010, PR China
| | - Yingrui Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yiwen Tao
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Ya Hou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Lu Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Yating Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China
| | - Jiasi Wu
- Acupuncture and Tuina School, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China.
| | - Xianli Meng
- State Key Laboratory of Southwestern Chinese Medicine Resources, Innovative Institute of Chinese Medicine and Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu, 611137, PR China.
| |
Collapse
|
3
|
Mohammed ET, Safwat GM, Bahnasawy EA, Abdel-Razik ARH, Mohamed DS. Zinc Oxide Nanoparticles and Vitamin C Ameliorate Atrazine-Induced Hepatic Apoptosis in Rat via CYP450s/ROS Pathway and Immunomodulation. Biol Trace Elem Res 2023; 201:5257-5271. [PMID: 36790584 PMCID: PMC10509061 DOI: 10.1007/s12011-023-03587-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 01/30/2023] [Indexed: 02/16/2023]
Abstract
Atrazine, as an herbicide, is used widely worldwide. Because of its prolonged persistence in the environment and accumulation in the body, atrazine exposure is a potential threat to human health. The present study evaluated the possible protective effects of zinc oxide nanoparticles and vitamin C against atrazine-induced hepatotoxicity in rats. Atrazine administered to rats orally at a dose of 300 mg/kg for 21 days caused liver oxidative stress as it increased malondialdehyde (MDA) formation and decreased reduced glutathione (GSH) contents. Atrazine induced inflammation accompanied by apoptosis via upregulation of hepatic gene expression levels of NF-κB, TNF-α, BAX, and caspase-3 and downregulation of Bcl-2 gene expression levels. Additionally, it disturbed the metabolic activities of cytochrome P450 as it downregulated hepatic gene expression levels of CYP1A1, CYP1B1, CYP2E1. The liver function biomarkers were greatly affected upon atrazine administration, and the serum levels of AST and ALT were significantly increased, while BWG%, albumin, globulins, and total proteins levels were markedly decreased. As a result of the above-mentioned influences of atrazine, histopathological changes in liver tissue were recorded in our findings. The administration of zinc oxide nanoparticles or vitamin C orally at a dose of 10 mg/kg and 200 mg/kg, respectively, for 30 days prior and along with atrazine, could significantly ameliorate the oxidative stress, inflammation, and apoptosis induced by atrazine and regulated the hepatic cytochrome P450 activities. Furthermore, they improved liver function biomarkers and histopathology. In conclusion, our results revealed that zinc oxide nanoparticles and vitamin C supplementations could effectively protect against atrazine-induced hepatotoxicity.
Collapse
Affiliation(s)
- Eman T Mohammed
- Department of Biochemistry, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62512, Egypt.
| | - Ghada M Safwat
- Department of Biochemistry, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62512, Egypt
| | - Esraa A Bahnasawy
- Department of Biochemistry, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62512, Egypt
| | - Abdel-Razik H Abdel-Razik
- Department of Histology, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62511, Egypt
| | - Doaa Sh Mohamed
- Department of Biochemistry, Faculty of Veterinary Medicine, Beni-Suef University, Beni Suef, 62512, Egypt
| |
Collapse
|
4
|
He L, Yu X, Zhao Y, Lin H, Zhang Y, Lu D. TLR5S negatively regulates the TLR5M-mediated NF-κB signaling pathway in Epinephelus coioides. Int J Biol Macromol 2023; 249:126048. [PMID: 37517756 DOI: 10.1016/j.ijbiomac.2023.126048] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/14/2023] [Accepted: 07/27/2023] [Indexed: 08/01/2023]
Abstract
Nuclear factor kappa-B (NF-κB) pathway is a key mediator of inflammation response that plays a role in host defense for pathogen elimination, but excessive activation may lead to tissue damage or pathogen transmission. The negative regulation of NF-κB in lower vertebrates is largely unknown, hindering further understanding of immune signaling evolution. Here, we provided evidence that Epinephelus coioides soluble toll-like receptor 5 (TLR5S), a member of the TLR5 subfamily, has been newly identified as a negative regulator of NF-κB signaling. EcTLR5S was a cytoplasmic protein consisting of 17 leucine-rich repeat domains, which specifically responded to Vibrio flagellin and suppressed flagellin-induced NF-κB signaling activation and cytokine expression. The amino-terminal LRR 1-5 region was necessary for its negative regulatory function. Dual-luciferase reporter assay showed that EcTLR5S significantly inhibited the NF-κB-luc activity induced by inhibitor of NF-κB kinase α (IKKα) and IKKβ. Subsequently, the functional relationship between EcTLR5M and EcTLR5S was analyzed, revealing that the negative regulatory function of EcTLR5S targeted the activation of the NF-κB pathway mediated by EcTLR5M. The above results reveal that EcTLR5S negatively regulates the flagellin-induced EcTLR5M-NF-κB pathway activation, which may prevent over-activation of immune signaling and restore homeostasis.
Collapse
Affiliation(s)
- Liangge He
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals, Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Xue Yu
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals, Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Yulin Zhao
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals, Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou 510275, PR China
| | - Haoran Lin
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals, Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou 510275, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, PR China; College of Ocean, Hainan University, Haikou 570228, PR China
| | - Yong Zhang
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals, Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou 510275, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266235, PR China; Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, Fisheries College, Guangdong Ocean University, Zhanjiang 524088, PR China
| | - Danqi Lu
- State Key Laboratory of Biocontrol and School of Life Sciences, Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Guangdong Provincial Key Laboratory for Aquatic Economic Animals, Guangdong Provincial Engineering Technology Research Center for Healthy Breeding of Important Economic Fish, Sun Yat-Sen University, Guangzhou 510275, PR China.
| |
Collapse
|
5
|
Deng L, Jian Z, Xu T, Li F, Deng H, Zhou Y, Lai S, Xu Z, Zhu L. Macrophage Polarization: An Important Candidate Regulator for Lung Diseases. Molecules 2023; 28:molecules28052379. [PMID: 36903624 PMCID: PMC10005642 DOI: 10.3390/molecules28052379] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Revised: 02/25/2023] [Accepted: 03/03/2023] [Indexed: 03/08/2023] Open
Abstract
Macrophages are crucial components of the immune system and play a critical role in the initial defense against pathogens. They are highly heterogeneous and plastic and can be polarized into classically activated macrophages (M1) or selectively activated macrophages (M2) in response to local microenvironments. Macrophage polarization involves the regulation of multiple signaling pathways and transcription factors. Here, we focused on the origin of macrophages, the phenotype and polarization of macrophages, as well as the signaling pathways associated with macrophage polarization. We also highlighted the role of macrophage polarization in lung diseases. We intend to enhance the understanding of the functions and immunomodulatory features of macrophages. Based on our review, we believe that targeting macrophage phenotypes is a viable and promising strategy for treating lung diseases.
Collapse
Affiliation(s)
- Lishuang Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
| | - Zhijie Jian
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
| | - Tong Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
| | - Fengqin Li
- College of Animal Science, Xichang University, Xichang 615000, China
| | - Huidan Deng
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
| | - Yuancheng Zhou
- Livestock and Poultry Biological Products Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu 625014, China
| | - Siyuan Lai
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
| | - Zhiwen Xu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu 625014, China
- Correspondence: (Z.X.); (L.Z.); Tel.: +86-139-8160-4765 (L.Z.)
| | - Ling Zhu
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 625014, China
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, Chengdu 625014, China
- Correspondence: (Z.X.); (L.Z.); Tel.: +86-139-8160-4765 (L.Z.)
| |
Collapse
|
6
|
Chi G, Pei J, Li X. The imbalance of liver resident macrophages polarization promotes chronic autoimmune hepatitis development in mice. PeerJ 2023; 11:e14871. [PMID: 36778150 PMCID: PMC9912947 DOI: 10.7717/peerj.14871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 01/18/2023] [Indexed: 02/10/2023] Open
Abstract
Background Autoimmune hepatitis (AIH) is a chronic immune-mediated inflammatory liver disease. At present, it is largely unknown how the innate immune cells influence AIH development. Objective To inquiry about mechanism of liver resident macrophages in AIH development, thus offering a new direction for AIH targeted treatment. Methods The liver resident macrophages were eliminated by clodronate liposomes in AIH liver tissues, followed by HE and Picrosirius assay to detect liver fibrosis and lymphocyte infiltration. The liver resident macrophages polarization was detected by Immunohistochemistry and qPCR. The collagenase digestion was used to isolate Kupffer cells from AIH mice liver tissues and pro-/anti-inflammatory cytokines were determined by qPCR. Results M2 macrophages were the dominant phenotype at early immune response stage and hepatic inflammation was progressively aggravated after depletion of liver resident macrophages. M2 macrophages could effectively delay the development of AIH and could be polarized to M1 macrophages at the disease progresses. TLR2 ligands could promote M2 macrophages producing anti-inflammatory cytokines, whereas TLR4 ligands could promote M1 macrophages producing proinflammatory cytokines. The change of TLR2 and TLR4 ligands could lead to continuous high expression of TLR4 and decreased expression of TLR2 in macrophages to further affect liver resident macrophages polarization state. Conclusion TLR2 and TLR4 ligands mediated liver resident macrophages polarization to favor chronic autoimmune hepatitis development.
Collapse
|
7
|
Ding Q, Wang Y, Yang C, Li X, Yu X. Clinical Utility of the Sivelestat for the Treatment of ALI/ARDS: Moving on in the Controversy? INTENSIVE CARE RESEARCH 2023; 3:12-17. [PMID: 36911225 PMCID: PMC9412801 DOI: 10.1007/s44231-022-00012-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 07/27/2022] [Indexed: 01/08/2023]
Abstract
Acute respiratory distress syndrome (ARDS) is a serious condition that can arise following direct or indirect acute lung injury (ALI). It is heterogeneous and has a high mortality rate. Supportive care is the mainstay of treatment and there is no definitive pharmacological treatment as yet. In nonclinical studies, neutrophil elastase inhibitor sivelestat appears to show benefit in ARDS without inhibiting the host immune defense in cases of infection. In clinical studies, the efficacy of sivelestat in the treatment of ARDS remains controversial. The currently available evidence suggests that sivelestat may show some benefit in the treatment of ARDS, although large, randomized controlled trials are needed in specific pathophysiological conditions to explore these potential benefits.
Collapse
Affiliation(s)
- Qiongli Ding
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Yi Wang
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Chunbo Yang
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Xiang Li
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| | - Xiangyou Yu
- Critical Medicine Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Medical University, Urumqi, 830054 Xinjiang Uygur Autonomous Region China.,Xinjiang Uygur Autonomous Region Institute of Critical Medicine, Urumqi, 830054 Xinjiang Uygur Autonomous Region China
| |
Collapse
|
8
|
Jiao Y, Yan Z, Yang A. Mitochondria in innate immunity signaling and its therapeutic implications in autoimmune diseases. Front Immunol 2023; 14:1160035. [PMID: 37122709 PMCID: PMC10130412 DOI: 10.3389/fimmu.2023.1160035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2023] [Accepted: 03/28/2023] [Indexed: 05/02/2023] Open
Abstract
Autoimmune diseases are characterized by vast alterations in immune responses, but the pathogenesis remains sophisticated and yet to be fully elucidated. Multiple mechanisms regulating cell differentiation, maturation, and death are critical, among which mitochondria-related cellular organelle functions have recently gained accumulating attention. Mitochondria, as a highly preserved organelle in eukaryotes, have crucial roles in the cellular response to both exogenous and endogenous stress beyond their fundamental functions in chemical energy conversion. In this review, we aim to summarize recent findings on the function of mitochondria in the innate immune response and its aberrancy in autoimmune diseases such as rheumatoid arthritis, systemic lupus erythematosus, etc., mainly focusing on its direct impact on cellular metabolism and its machinery on regulating immune response signaling pathways. More importantly, we summarize the status quo of potential therapeutic targets found in the mitochondrial regulation in the setting of autoimmune diseases and wish to shed light on future studies.
Collapse
Affiliation(s)
- Yuhao Jiao
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
| | - Zhiyu Yan
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
- 4+4 Medical Doctor Program, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Aiming Yang
- Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Beijing, China
- *Correspondence: Aiming Yang,
| |
Collapse
|
9
|
Long SA, Buckner JH. Clinical and experimental treatment of type 1 diabetes. Clin Exp Immunol 2022; 210:105-113. [PMID: 35980300 PMCID: PMC9750829 DOI: 10.1093/cei/uxac077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/26/2022] [Accepted: 08/17/2022] [Indexed: 01/25/2023] Open
Abstract
Type 1 diabetes (T1D) is an autoimmune disease resulting in the destruction of the insulin-producing pancreatic beta cells. Disease progression occurs along a trajectory from genetic risk, the development of islet autoantibodies, and autoreactive T cells ultimately progressing to clinical disease. Natural history studies and mechanistic studies linked to clinical trials have provided insight into the role of the immune system in disease pathogenesis. Here, we review our current understanding of the underlying etiology of T1D, focusing on the immune cell types that have been implicated in progression from pre-symptomatic T1D to clinical diagnosis and established disease. This knowledge has been foundational for the development of immunotherapies aimed at the prevention and treatment of T1D.
Collapse
Affiliation(s)
- S Alice Long
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
| | - Jane H Buckner
- Center for Translational Immunology, Benaroya Research Institute at Virginia Mason, Seattle, WA, USA
| |
Collapse
|
10
|
Wang J, Li Z. TREM2 Is a Prognostic Biomarker and Correlated with an Immunosuppressive Microenvironment in Thyroid Cancer. DISEASE MARKERS 2022; 2022:1807386. [PMID: 36438899 PMCID: PMC9683966 DOI: 10.1155/2022/1807386] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/14/2022] [Accepted: 09/21/2022] [Indexed: 03/12/2024]
Abstract
PURPOSES To identify the differentially expressed genes (DEGs) related to the immune microenvironment and elucidate the biological functions of key genes in papillary thyroid cancer (PTC) by analyzing the immune microenvironment. METHODS The relative quantities of immune and matrix components in 507 patients with PTC were calculated from the TCGA database. Analysis of differentially expressed genes in tumor samples throughout the genome, intersection of DEGs obtained from PTC patients, and genome-wide tumor samples and survival analysis were performed. Survival analysis was used for identification of prognostic factor. Immunohistochemical analysis of the TREM2 expression in PTC tissues, flow cytometry, and transwell assays were used to detect the effect of TREM2 on PTC cell proliferation, migration, and invasion. RESULTS There were a total of 1242 upregulated genes with high intersection in the immune score and 124 downregulated genes with low intersection in the stromal score. A total of 1,366 genes in these DEGs may be determinants in the immune microenvironment. GO enrichment and KEGG enrichment analysis revealed that the overall function of DEGs appeared to map onto immune-related activities. Gene intersection and survival analysis showed that there were 435 DEG crosses in PTC patients and genome-wide tumor samples, only CXCL10, CD40LG, KRT14, TRAT1, and TREM2 were associated with patient prognosis, and TCGA showed that only the TREM2 expression was upregulated in PTC. TREM2 knockdown inhibited the cell cycle and cell proliferation, migration, and invasion by PTC cells. TREM2 was associated with the immunosuppressive microenvironment by via NF-κB pathway in PTC. CONCLUSION TREM2 possibly was a potential indicator of altered TME status in PTC, and that TREM2 promoted PTC cell proliferation and cell cycle, migration, and invasion by NF-κB pathway.
Collapse
Affiliation(s)
- Jing Wang
- Department of Head and Neck Surgery, Cancer Hospital of China Medical University, NO.44 Xiaoheyan Road, Dadong District, Shenyang 110042, Liaoning Province, China
| | - Zhendong Li
- Department of Head and Neck Surgery, Cancer Hospital of China Medical University, NO.44 Xiaoheyan Road, Dadong District, Shenyang 110042, Liaoning Province, China
| |
Collapse
|
11
|
Toledano-Díaz A, Álvarez MI, Toledano A. The relationships between neuroglial and neuronal changes in Alzheimer's disease, and the related controversies II: gliotherapies and multimodal therapy. J Cent Nerv Syst Dis 2022; 14:11795735221123896. [PMID: 36407561 PMCID: PMC9666878 DOI: 10.1177/11795735221123896] [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: 08/18/2021] [Accepted: 08/05/2022] [Indexed: 08/30/2023] Open
Abstract
Since the original description of Alzheimer´s disease (AD), research into this condition has mainly focused on assessing the alterations to neurons associated with dementia, and those to the circuits in which they are involved. In most of the studies on human brains and in many models of AD, the glial cells accompanying these neurons undergo concomitant alterations that aggravate the course of neurodegeneration. As a result, these changes to neuroglial cells are now included in all the "pathogenic cascades" described in AD. Accordingly, astrogliosis and microgliosis, the main components of neuroinflammation, have been integrated into all the pathogenic theories of this disease, as discussed in this part of the two-part monograph that follows an accompanying article on gliopathogenesis and glioprotection. This initial reflection verified the implication of alterations to the neuroglia in AD, suggesting that these cells may also represent therapeutic targets to prevent neurodegeneration. In this second part of the monograph, we will analyze the possibilities of acting on glial cells to prevent or treat the neurodegeneration that is the hallmark of AD and other pathologies. Evidence of the potential of different pharmacological, non-pharmacological, cell and gene therapies (widely treated) to prevent or treat this disease is now forthcoming, in most cases as adjuncts to other therapies. A comprehensive AD multimodal therapy is proposed in which neuronal and neuroglial pharmacological treatments are jointly considered, as well as the use of new cell and gene therapies and non-pharmacological therapies that tend to slow down the progress of dementia.
Collapse
|
12
|
Hoogland ICM, Yik J, Westhoff D, Engelen-Lee JY, Valls Seron M, Man WK, Houben-Weerts JHPM, Tanck MW, van Westerloo DJ, van der Poll T, van Gool WA, van de Beek D. Microglial Response in Triggering Receptor Expressed on Myeloid Cells 2 (Trem2) Knock-Out Mice After Systemic Stimulation with Escherichia Coli. Neurosci Lett 2022; 790:136894. [PMID: 36183964 DOI: 10.1016/j.neulet.2022.136894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Revised: 09/27/2022] [Accepted: 09/27/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND Systemic infection is an important risk factor for delirium, associated with neurodegeneration and subsequent cognitive impairment in older people. Microglial cell response is a known key player in this process and we hypothesize that the triggering receptor expressed on myeloid cells 2 (TREM2) plays an important role in the regulation of this response. METHODS 8- to 10-week old male wild-type (WT) and TREM2 knock-out (Trem2-/-) mice were intraperitoneally inoculated with live Escherichia coli (E. coli) or saline. After inoculation, all mice were treated with ceftriaxone (an antimicrobial drug) at 12 and 24 hours and were sacrificed after 2 and 3 days. Microglial response was determined by immunohistochemical staining with an ionized calcium-binding adaptor molecule 1 (Iba-1) antibody and flow cytometry. mRNA expression of pro- and anti-inflammatory mediators was measured to quantify the inflammatory response. RESULTS We observed increased Iba-1 positive cells number in thalamus of Trem2-/- mice at 3d after inoculation compared to WT mice (mean 120 cell/mm2 [SD 8] vs. 105 cell/mm2 [SD 11]; p=0.03). Flow cytometry showed no differences in forward scatter or expression of CD11b, CD45 and CD14 between WT and Trem2-/- mice. The brain mRNA expression levels of tumor necrosis factor alpha (TNF-α) of Trem2-/- mice at 2d were higher compared to WT mice (p=0.003). Higher mRNA expression of interleukin 1 beta (IL-1β), Iba-1, CD11b and mitogen-activated protein kinase 1 (MAPK-1) was found in brain of WT mice at 2d compared to Trem2-/- mice (respectively p=0.02; p=0.001; p=0.03 and p=0.02). In spleen there were no differences in inflammatory mediators, between WT and Trem2-/- mice. INTERPRETATION Although the loss of function of TREM2 during systemic infection led to an increased number of activated microglia in the thalamus, we did not observe a consistent increase in expression of inflammatory genes in the brain. The role of TREM2 in the neuro-inflammatory response following systemic infection therefore appears to be limited.
Collapse
Affiliation(s)
- Inge C M Hoogland
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands.
| | - Jutka Yik
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands
| | - Dunja Westhoff
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands.
| | - Joo-Yeon Engelen-Lee
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands.
| | - Merche Valls Seron
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands
| | - Wing-Kit Man
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands
| | - Judith H P M Houben-Weerts
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands.
| | - Michael W Tanck
- Department of Clinical Epidemiology, Amsterdam University Medical Centres, Location Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
| | | | - Tom van der Poll
- Centre of Experimental Molecular Medicine, Amsterdam University Medical Centres, Location Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands.
| | - Willem A van Gool
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands.
| | - Diederik van de Beek
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Centre, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands.
| |
Collapse
|
13
|
Modulation of Alveolar Macrophages by Postimmunobiotics: Impact on TLR3-Mediated Antiviral Respiratory Immunity. Cells 2022; 11:cells11192986. [PMID: 36230948 PMCID: PMC9562200 DOI: 10.3390/cells11192986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/20/2022] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
Beneficial microbes with immunomodulatory capacities (immunobiotics) and their non-viable forms (postimmunobiotics) could be effectively utilized in formulations towards the prevention of respiratory viral infections. In this study, novel immunobiotic strains with the ability to increase antiviral immunity in porcine alveolar macrophages were selected from a library of Lactobacillus gasseri. Postimmunobiotics derived from the most remarkable strains were also evaluated in their capacity to modulate the immune response triggered by Toll-like receptor 3 (TLR3) in alveolar macrophages and to differentially regulate TLR3-mediated antiviral respiratory immunity in infant mice. We provide evidence that porcine alveolar macrophages (3D4/31 cells) are a useful in vitro tool for the screening of new antiviral immunobiotics and postimmunobiotics by assessing their ability to modulate the expression IFN-β, IFN-λ1, RNAseL, Mx2, and IL-6, which can be used as prospective biomarkers. We also demonstrate that the postimmunobiotics derived from the Lactobacillus gasseri TMT36, TMT39 and TMT40 (HK36, HK39 or HK40) strains modulate the innate antiviral immune response of alveolar macrophages and reduce lung inflammatory damage triggered by TLR3 activation in vivo. Although our findings should be deepened and expanded, the results of the present work provide a scientific rationale for the use of nasally administered HK36, HK39 or HK40 to beneficially modulate TLR3-triggerd respiratory innate immune response.
Collapse
|
14
|
Sao P, Chand Y, Al-Keridis LA, Saeed M, Alshammari N, Singh S. Classifying Integrated Signature Molecules in Macrophages of Rheumatoid Arthritis, Osteoarthritis, and Periodontal Disease: An Omics-Based Study. Curr Issues Mol Biol 2022; 44:3496-3517. [PMID: 36005137 PMCID: PMC9406916 DOI: 10.3390/cimb44080241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 07/15/2022] [Accepted: 07/23/2022] [Indexed: 12/02/2022] Open
Abstract
Rheumatoid arthritis (RA), osteoarthritis (OA), and periodontal disease (PD) are chronic inflammatory diseases that are globally prevalent, and pose a public health concern. The search for a potential mechanism linking PD to RA and OA continues, as it could play a significant role in disease prevention and treatment. Recent studies have linked RA, OA, and PD to Porphyromonas gingivalis (PG), a periodontal bacterium, through a similar dysregulation in an inflammatory mechanism. This study aimed to identify potential gene signatures that could assist in early diagnosis as well as gain insight into the molecular mechanisms of these diseases. The expression data sets with the series IDs GSE97779, GSE123492, and GSE24897 for macrophages of RA, OA synovium, and PG stimulated macrophages (PG-SM), respectively, were retrieved and screened for differentially expressed genes (DEGs). The 72 common DEGs among RA, OA, and PG-SM were further subjected to gene–gene correlation analysis. A GeneMANIA interaction network of the 47 highly correlated DEGs comprises 53 nodes and 271 edges. Network centrality analysis identified 15 hub genes, 6 of which are DEGs (API5, ATE1, CCNG1, EHD1, RIN2, and STK39). Additionally, two significantly up-regulated non-hub genes (IER3 and RGS16) showed interactions with hub genes. Functional enrichment analysis of the genes showed that “apoptotic regulation” and “inflammasomes” were among the major pathways. These eight genes can serve as important signatures/targets, and provide new insights into the molecular mechanism of PG-induced RA, OA, and PD.
Collapse
Affiliation(s)
- Prachi Sao
- Faculty of Biotechnology, Institute of Biosciences and Technology, Shri Ramswaroop Memorial University, Barabanki 225003, Uttar Pradesh, India
| | - Yamini Chand
- Faculty of Biotechnology, Institute of Biosciences and Technology, Shri Ramswaroop Memorial University, Barabanki 225003, Uttar Pradesh, India
| | - Lamya Ahmed Al-Keridis
- Department of Biology, College of Science, Princess Nourah Bint Abdulrahman University, Riyadh 11671, Saudi Arabia
- Correspondence: (L.A.A.-K.); (S.S.)
| | - Mohd Saeed
- Department of Biology, College of Science, University of Hail, Hail 55476, Saudi Arabia
| | - Nawaf Alshammari
- Department of Biology, College of Science, University of Hail, Hail 55476, Saudi Arabia
| | - Sachidanand Singh
- Faculty of Biotechnology, Institute of Biosciences and Technology, Shri Ramswaroop Memorial University, Barabanki 225003, Uttar Pradesh, India
- Department of Biotechnology, Vignan’s Foundation for Science, Technology, and Research (Deemed to be University), Vadlamudi, Guntur 522213, Andhra Pradesh, India
- Department of Biotechnology, Smt. S. S. Patel Nootan Science & Commerce College, Sankalchand Patel University, Visnagar 384315, Gujarat, India
- Correspondence: (L.A.A.-K.); (S.S.)
| |
Collapse
|
15
|
Alby-Laurent F, Belaïdouni N, Blanchet B, Rousseau C, Llitjos JF, Sanquer S, Mira JP, Pène F, Toubiana J, Chiche JD. Low-dose mycophenolate mofetil improves survival in a murine model of Staphylococcus aureus sepsis by increasing bacterial clearance and phagocyte function. Front Immunol 2022; 13:939213. [PMID: 35936013 PMCID: PMC9351454 DOI: 10.3389/fimmu.2022.939213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Regulators of TLRs signaling pathways play an important role in the control of the pro-inflammatory response that contributes to sepsis-induced tissue injury. Mycophenolate mofetil, an immunosuppressive drug inhibiting lymphocyte proliferation, has been reported to be a regulator of TLRs signaling pathways. Whether MMF used at infra-immunosuppressive doses has an impact on survival and on innate immune response in sepsis is unknown.C57BL/6J mice were infected intraperitoneally with 108 CFU Staphylococcus aureus, and treated or not with low-dose of MMF (20mg/kg/day during 4 days). Survival rate and bacterial clearance were compared. Cytokine levels, quantitative and qualitative cellular responses were assessed. S. aureus – infected mice treated with MMF exhibited improved survival compared to non-treated ones (48% vs 10%, p<0.001). With the dose used for all experiments, MMF did not show any effect on lymphocyte proliferation. MMF treatment also improved local and systemic bacterial clearance, improved phagocytosis activity of peritoneal macrophages resulting in decreased inflammatory cytokines secretion. MMF-treated mice showed enhanced activation of NF-κB seemed with a suspected TLR4-dependent mechanism. These results suggest that infra-immunosuppressive doses of MMF improve host defense during S. aureus sepsis and protects infected mice from fatal outcome by regulating innate immune responses. The signaling pathways involved could be TLR4-dependent. This work brings new perspectives in pathogenesis and therapeutic approaches of severe infections.
Collapse
Affiliation(s)
- Fanny Alby-Laurent
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
| | - Nadia Belaïdouni
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
| | - Benoit Blanchet
- Department of Pharmocology and Toxicology, Cochin Hospital, Assistance Publique des hôpitaux de Paris (APHP), Université de Paris, Paris, France
| | - Christophe Rousseau
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
| | - Jean-François Llitjos
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
- Medical Intensive Care Unit, Cochin Hospital, APHP, Université de Paris, Paris, France
| | - Sylvia Sanquer
- Metabolic and Proteomic Biochemistry Department, Necker-Enfants malades Hospital, Université de Paris, Paris, France
| | - Jean-Paul Mira
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
- Medical Intensive Care Unit, Cochin Hospital, APHP, Université de Paris, Paris, France
| | - Frédéric Pène
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
- Medical Intensive Care Unit, Cochin Hospital, APHP, Université de Paris, Paris, France
| | - Julie Toubiana
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
- Department of General Pediatrics and Infectious Diseases, Necker-Enfants malades Hospital, APHP, Université de Paris, Paris, France
| | - Jean-Daniel Chiche
- Cochin Institute, Department of Infection, Immunity and Inflammation, Inserm U1016, Paris Descartes Sorbonne Paris Cité University UMR-S1016, Centre National de la Recherche Scientifique (CNRS) UMR 8104, Paris, France
- Medical Intensive Care Unit, Cochin Hospital, APHP, Université de Paris, Paris, France
- Department of Intensive Care Medicine, Hospital and University of Lausanne, Lausanne, Switzerland
- *Correspondence: Jean-Daniel Chiche,
| |
Collapse
|
16
|
Cao C, Ding J, Cao D, Li B, Wu J, Li X, Li H, Cui G, Shen H, Chen G. TREM2 modulates neuroinflammation with elevated IRAK3 expression and plays a neuroprotective role after experimental SAH in rats. Neurobiol Dis 2022; 171:105809. [PMID: 35781003 DOI: 10.1016/j.nbd.2022.105809] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND The modulation of neuroinflammation is a new direction that may alleviate the early brain injury after subarachnoid hemorrhage (SAH). Brain resident microglia/macrophages (Mi/MΦ) are the key drivers of neuroinflammation. Triggering receptor expressed on myeloid cells 2 (TREM2) has been reported to play a neuroprotective role by activating phagocytosis and suspending inflammatory response in experimental ischemic stroke and intracerebral hemorrhage. This study was designed to investigate the role of TREM2 on neuroinflammation and neuroprotective effects in a rat SAH model. METHODS Adult male Sprague-Dawley rats were induced SAH through endovascular perforation. Lentivirus vectors were administered by i.c.v. to induce TREM2 overexpression or knockdown 7 days before SAH induction. Short- and long-term neurobehavioral tests, western blotting, immunofluorescence, enzyme-linked immunosorbent assay, terminal deoxynucleotidyl transferase dUTP nick end labeling and Nissl staining were performed to explore the neuroprotective role of TREM2 after SAH. RESULTS The expression of TREM2 elevated in a rat SAH model with a peak at 48 h after SAH and mainly expressed in Mi/MΦ in brain. TREM2 overexpression improved short- and long-term neurological deficits induced by SAH in rats, while TREM2 knockdown worsened neurological dysfunction. The rats with TREM2 overexpressed presented less neuronal apoptosis and more neuronal survival at 48 h after SAH, while the rats with TREM2 knockdown presented on the contrary. TREM2 overexpression manifested activated phagocytosis and suppressed inflammatory response, with the increase of CD206+/CD11b+ cells and IL-10 expression as well as the decrease of the infiltration of MPO+ cells and the expression of TNF-α, IL-1β. While TREM2 knockdown abolished these effects. The protein level of IRAK3, a negative regulatory factor of inflammation, was significantly elevated after TREM2 overexpression and declined after TREM2 knockdown. CONCLUSIONS Our research suggested TREM2 played a neuroprotective role and improved the short- and long-term neurological deficits by modulating neuroinflammation after SAH. The modulation on neuroinflammation of TREM2 after SAH was related with the elevated protein level of IRAK3.
Collapse
Affiliation(s)
- Cheng Cao
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Department of Neurocritical Intensive Care Unit, The Affiliated Jiangyin Hospital, School of Medicine, Southeast University, Jiangyin City 214400, Jiangsu Province, China
| | - Jiasheng Ding
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Demao Cao
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Bing Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Jiang Wu
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Haiying Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Gang Cui
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China.
| | - Haitao Shen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China.
| | - Gang Chen
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| |
Collapse
|
17
|
Nilsen KE, Skjesol A, Frengen Kojen J, Espevik T, Stenvik J, Yurchenko M. TIRAP/Mal Positively Regulates TLR8-Mediated Signaling via IRF5 in Human Cells. Biomedicines 2022; 10:biomedicines10071476. [PMID: 35884781 PMCID: PMC9312982 DOI: 10.3390/biomedicines10071476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/09/2022] [Accepted: 06/17/2022] [Indexed: 11/21/2022] Open
Abstract
Toll-like receptor 8 (TLR8) recognizes single-stranded RNA of viral and bacterial origin as well as mediates the secretion of pro-inflammatory cytokines and type I interferons by human monocytes and macrophages. TLR8, as other endosomal TLRs, utilizes the MyD88 adaptor protein for initiation of signaling from endosomes. Here, we addressed the potential role of the Toll-interleukin 1 receptor domain-containing adaptor protein (TIRAP) in the regulation of TLR8 signaling in human primary monocyte-derived macrophages (MDMs). To accomplish this, we performed TIRAP gene silencing, followed by the stimulation of cells with synthetic ligands or live bacteria. Cytokine-gene expression and secretion were analyzed by quantitative PCR or Bioplex assays, respectively, while nuclear translocation of transcription factors was addressed by immunofluorescence and imaging, as well as by cell fractionation and immunoblotting. Immunoprecipitation and Akt inhibitors were also used to dissect the signaling mechanisms. Overall, we show that TIRAP is recruited to the TLR8 Myddosome signaling complex, where TIRAP contributes to Akt-kinase activation and the nuclear translocation of interferon regulatory factor 5 (IRF5). Recruitment of TIRAP to the TLR8 signaling complex promotes the expression and secretion of the IRF5-dependent cytokines IFNβ and IL-12p70 as well as, to a lesser degree, TNF. These findings reveal a new and unconventional role of TIRAP in innate immune defense.
Collapse
Affiliation(s)
- Kaja Elisabeth Nilsen
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Astrid Skjesol
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - June Frengen Kojen
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Terje Espevik
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - Jørgen Stenvik
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, NO-7006 Trondheim, Norway
| | - Maria Yurchenko
- Centre of Molecular Inflammation Research, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway; (K.E.N.); (A.S.); (J.F.K.); (T.E.); (J.S.)
- Department of Clinical and Molecular Medicine, Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
- Department of Infectious Diseases, Clinic of Medicine, St. Olavs Hospital HF, Trondheim University Hospital, NO-7006 Trondheim, Norway
- Correspondence:
| |
Collapse
|
18
|
Wang J, Zhang F, Xu H, Yang H, Shao M, Xu S, Lyu F. TLR4 aggravates microglial pyroptosis by promoting DDX3X-mediated NLRP3 inflammasome activation via JAK2/STAT1 pathway after spinal cord injury. Clin Transl Med 2022; 12:e894. [PMID: 35692100 PMCID: PMC9189419 DOI: 10.1002/ctm2.894] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/30/2022] [Accepted: 05/09/2022] [Indexed: 12/17/2022] Open
Abstract
Background Toll‐like receptor 4 (TLR4) participates in the initiation of neuroinflammation in various neurological diseases, including central nervous system injuries. NLR family pyrin domain containing 3 (NLRP3) inflammasome‐mediated microglial pyroptosis is crucial for the inflammatory response during secondary spinal cord injury (SCI). However, the underlying mechanism by which TLR4 regulates NLRP3 inflammasome activation and microglial pyroptosis after SCI remains uncertain. Methods We established an in vivo mouse model of SCI using TLR4‐knockout (TLR4‐KO) and wild‐type (WT) mice. The levels of pyroptosis, tissue damage and neurological function recovery were evaluated in the three groups (Sham, SCI, SCI‐TLR4‐KO). To identify differentially expressed proteins, tandem mass tag (TMT)‐based proteomics was conducted using spinal cord tissue between TLR4‐KO and WT mice after SCI. For our in vitro model, mouse microglial BV2 cells were exposed to lipopolysaccharides (1 µg/ml, 8 h) and adenosine triphosphate (ATP) (5 mM, 2 h) to induce pyroptosis. A series of molecular biological experiments, including Western blot (WB), real‐time quantitative polymerase chain reaction (RT‐qPCR), enzyme‐linked immunosorbent assay (ELISA), immunofluorescence (IF), immunohistochemical (IHC), chromatin immunoprecipitation (ChIP), Dual‐Luciferase Reporter assay (DLA) and co‐immunoprecipitation (Co‐IP), were performed to explore the specific mechanism of microglial pyroptosis in vivo and in vitro. Results Our results indicated that TLR4 promoted the expression of dead‐box helicase 3 X‐linked (DDX3X), which mediated NLRP3 inflammasome activation and microglial pyroptosis after SCI. Further analysis revealed that TLR4 upregulated the DDX3X/NLRP3 axis by activating the JAK2/STAT1 signalling pathway, and importantly, STAT1 was identified as a transcription factor promoting DDX3X expression. In addition, we found that biglycan was increased after SCI and interacted with TLR4 to jointly regulate microglial pyroptosis through the JAK2/STAT1/DDX3X/NLRP3 axis after SCI. Conclusion Our study preliminarily identified a novel mechanism by which TLR4 regulates NLRP3 inflammasome‐mediated microglial pyroptosis in response to SCI—providing a novel and promising therapeutic target for SCI.
Collapse
Affiliation(s)
- Jin Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Fan Zhang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Haocheng Xu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Haiyuan Yang
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Minghao Shao
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, P. R. China
| | - Shun Xu
- Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, P. R. China
| | - Feizhou Lyu
- Department of Orthopedics, Huashan Hospital, Fudan University, Shanghai, P. R. China.,Department of Orthopedics, Shanghai Fifth People's Hospital, Fudan University, Shanghai, P. R. China
| |
Collapse
|
19
|
Liu J, Zhang H, Su Y, Zhang B. Application and prospect of targeting innate immune sensors in the treatment of autoimmune diseases. Cell Biosci 2022; 12:68. [PMID: 35619184 PMCID: PMC9134593 DOI: 10.1186/s13578-022-00810-w] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 05/09/2022] [Indexed: 12/22/2022] Open
Abstract
Dysregulation of auto-reactive T cells and autoantibody-producing B cells and excessive inflammation are responsible for the occurrence and development of autoimmune diseases. The suppression of autoreactive T cell activation and autoantibody production, as well as inhibition of inflammatory cytokine production have been utilized to ameliorate autoimmune disease symptoms. However, the existing treatment strategies are not sufficient to cure autoimmune diseases since patients can quickly suffer a relapse following the end of treatments. Pattern recognition receptors (PRRs), including Toll-like receptors (TLRs), Nod-like receptors (NLRs), RIG-I like receptors (RLRs), C-type lectin receptors (CLRs) and various nucleic acid sensors, are expressed in both innate and adaptive immune cells and are involved in the development of autoimmune diseases. Here, we have summarized advances of PRRs signaling pathways, association between PRRs and autoimmune diseases, application of inhibitors targeting PRRs and the corresponding signaling molecules relevant to strategies targeting autoimmune diseases. This review emphasizes the roles of different PRRs in activating both innate and adaptive immunity, which can coordinate to trigger autoimmune responses. The review may also prompt the formulation of novel ideas for developing therapeutic strategies against autoimmune diseases by targeting PRRs-related signals.
Collapse
Affiliation(s)
- Jun Liu
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China
| | - Hui Zhang
- NHC Key Laboratory of AIDS Immunology (China Medical University), National Clinical Research Center for Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, 110001, China
| | - Yanhong Su
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China.,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China
| | - Baojun Zhang
- Department of Pathogenic Microbiology and Immunology, School of Basic Medical Sciences, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China. .,Institute of Infection and Immunity, Translational Medicine Institute, Xi'an Jiaotong University Health Science Center, Xi'an, 710061, Shaanxi, China. .,Key Laboratory of Environment and Genes Related to Diseases, Xi'an Jiaotong University, Xi'an, 710061, Shaanxi, China. .,Basic and Translational Research Laboratory of Immune Related Diseases, Xi'an, 710061, Shaanxi, China.
| |
Collapse
|
20
|
Hoogland ICM, Yik J, Westhoff D, Engelen-Lee JY, Valls Seron M, Man WK, Houben-Weerts JHPM, Tanck MWT, van Westerloo DJ, van der Poll T, van Gool WA, van de Beek D. Microglial cell response in α7 nicotinic acetylcholine receptor-deficient mice after systemic infection with Escherichia coli. J Neuroinflammation 2022; 19:94. [PMID: 35413868 PMCID: PMC9006549 DOI: 10.1186/s12974-022-02452-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/29/2022] [Indexed: 12/04/2022] Open
Abstract
Background Development of neurodegeneration in older people has been associated with microglial cell activation triggered by systemic infection. We hypothesize that α7 nicotinic acetylcholine receptor (α7nAChR) plays an important role in regulation of this process. Methods 8- to 10-week-old male wild-type (WT) and α7nAChR knock-out (α7nAChR−/−) mice were intraperitoneally inoculated with live Escherichia (E.) coli or saline. After inoculation, all mice were treated with ceftriaxone (an antimicrobial drug) at 12 and 24 h and killed at 2 or 3 days. The microglial response was characterized by immunohistochemical staining with an ionized calcium-binding adaptor molecule 1 (Iba-1) antibody and flow cytometry. To quantify inflammatory response, mRNA expression of pro- and anti-inflammatory mediators was measured in brain and spleen. Results We observed no differences in Iba-1 positive cell number or morphology and flow cytometry (CD11b, CD45 and CD14) of microglial cells between WT and α7nAChR−/− mice after systemic infection. Infected α7nAChR−/− mice showed significantly higher mRNA expression in brain for tumor necrosis factor alpha (TNF-α) at day 2 and 3, interleukin 6 (IL-6) at day 2 and monocyte chemotactic protein 1 (MCP-1) and suppressor of cytokine signaling 1 (SOCS1) at day 3, there was significantly lower mRNA expression in brain for mitogen-activated protein kinase 1 (MAPK1) at day 2 and 3, high-mobility group 1 (HMGB-1) and CD11b at day 2, and deubiquitinase protein A20 (A20) at day 3 compared to infected WT mice. Interpretation Loss of function of α7nAChR during systemic infection led to an increased expression of TNF-α and IL-6 in brain after systemic infection with E. coli, but not to distinct differences in microglial cell number or morphological activation of microglia. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-022-02452-8.
Collapse
Affiliation(s)
- Inge C M Hoogland
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Jutka Yik
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Dunja Westhoff
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Joo-Yeon Engelen-Lee
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Merche Valls Seron
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Wing Kit Man
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Judith H P M Houben-Weerts
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Michael W T Tanck
- Department of Clinical Epidemiology, Amsterdam University Medical Centres, Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | | | - Tom van der Poll
- Centre of Experimental Molecular Medicine, Amsterdam University Medical Centres, Location Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands
| | - Willem A van Gool
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands
| | - Diederik van de Beek
- Department of Neurology, Amsterdam University Medical Centres, Location Academic Medical Center, Amsterdam Neuroscience, University of Amsterdam, PO Box 22660, 1100DD, Amsterdam, The Netherlands.
| |
Collapse
|
21
|
Jiang Y, Xu X, Xiao L, Wang L, Qiang S. The Role of microRNA in the Inflammatory Response of Wound Healing. Front Immunol 2022; 13:852419. [PMID: 35386721 PMCID: PMC8977525 DOI: 10.3389/fimmu.2022.852419] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 03/02/2022] [Indexed: 12/20/2022] Open
Abstract
Wound healing, a highly complex pathophysiological response to injury, includes four overlapping phases of hemostasis, inflammation, proliferation, and remodeling. Initiation and resolution of the inflammatory response are the primary requirements for wound healing, and are also key events that determines wound quality and healing time. Currently, the number of patients with persistent chronic wounds has generally increased, which imposes health and economic burden on patients and society. Recent studies have found that microRNA(miRNA) plays an essential role in the inflammation involved in wound healing and may provide a new therapeutic direction for wound treatment. Therefore, this review focused on the role and significance of miRNA in the inflammation phase of wound healing.
Collapse
Affiliation(s)
- Yuanyuan Jiang
- Center Laboratory, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, China
| | - Xiang Xu
- Center Laboratory, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, China
| | - Long Xiao
- Center Laboratory, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, China
| | - Lihong Wang
- Center Laboratory, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, China
| | - Sheng Qiang
- Center Laboratory, Zhangjiagang TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Zhangjiagang, China
| |
Collapse
|
22
|
Mentrup T, Stumpff-Niggemann AY, Leinung N, Schlosser C, Schubert K, Wehner R, Tunger A, Schatz V, Neubert P, Gradtke AC, Wolf J, Rose-John S, Saftig P, Dalpke A, Jantsch J, Schmitz M, Fluhrer R, Jacobsen ID, Schröder B. Phagosomal signalling of the C-type lectin receptor Dectin-1 is terminated by intramembrane proteolysis. Nat Commun 2022; 13:1880. [PMID: 35388002 PMCID: PMC8987071 DOI: 10.1038/s41467-022-29474-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 03/14/2022] [Indexed: 11/23/2022] Open
Abstract
Sensing of pathogens by pattern recognition receptors (PRR) is critical to initiate protective host defence reactions. However, activation of the immune system has to be carefully titrated to avoid tissue damage necessitating mechanisms to control and terminate PRR signalling. Dectin-1 is a PRR for fungal β-glucans on immune cells that is rapidly internalised after ligand-binding. Here, we demonstrate that pathogen recognition by the Dectin-1a isoform results in the formation of a stable receptor fragment devoid of the ligand binding domain. This fragment persists in phagosomal membranes and contributes to signal transduction which is terminated by the intramembrane proteases Signal Peptide Peptidase-like (SPPL) 2a and 2b. Consequently, immune cells lacking SPPL2b demonstrate increased anti-fungal ROS production, killing capacity and cytokine responses. The identified mechanism allows to uncouple the PRR signalling response from delivery of the pathogen to degradative compartments and identifies intramembrane proteases as part of a regulatory circuit to control anti-fungal immune responses. Dectin-1 is a critical component of the innate sensing repertoire which is involved in pattern based recognition of fungal pathogens. Here the authors show that intramembrane proteolysis is involved in the regulation of the antifungal host response by termination of the phagosomal signalling of Dectin-1.
Collapse
Affiliation(s)
- Torben Mentrup
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | | | - Nadja Leinung
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Christine Schlosser
- Biochemistry and Molecular Biology, Institute of Theoretical Medicine, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Katja Schubert
- Research Group Microbial Immunology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Jena, Germany
| | - Rebekka Wehner
- Institute of Immunology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany.,German Cancer Consortium (DKTK), Partner Site Dresden, Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Antje Tunger
- Institute of Immunology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany
| | - Valentin Schatz
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Patrick Neubert
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Ann-Christine Gradtke
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Janina Wolf
- Biochemical Institute, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Stefan Rose-John
- Biochemical Institute, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Paul Saftig
- Biochemical Institute, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Alexander Dalpke
- Institute of Medical Microbiology and Virology, University Hospital Carl Gustav Carus, Medical Faculty, Technische Universität Dresden, Dresden, Germany
| | - Jonathan Jantsch
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg and University of Regensburg, Regensburg, Germany
| | - Marc Schmitz
- Institute of Immunology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.,National Center for Tumor Diseases (NCT), Partner Site Dresden, Dresden, Germany.,German Cancer Consortium (DKTK), Partner Site Dresden, Dresden, and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Regina Fluhrer
- Biochemistry and Molecular Biology, Institute of Theoretical Medicine, Medical Faculty, University of Augsburg, Augsburg, Germany
| | - Ilse D Jacobsen
- Research Group Microbial Immunology, Leibniz Institute for Natural Product Research and Infection Biology, Hans Knöll Institute, Jena, Germany.,Institute of Microbiology, Friedrich Schiller University, Jena, Germany
| | - Bernd Schröder
- Institute of Physiological Chemistry, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
| |
Collapse
|
23
|
Lv Z, Xu T, Li R, Zheng D, Li Y, Li W, Yang Y, Hao Y. Downregulation of m6A Methyltransferase in the Hippocampus of Tyrobp–/– Mice and Implications for Learning and Memory Deficits. Front Neurosci 2022; 16:739201. [PMID: 35386591 PMCID: PMC8978996 DOI: 10.3389/fnins.2022.739201] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 02/10/2022] [Indexed: 12/13/2022] Open
Abstract
Loss-of-function mutations in the gene that encodes TYRO protein kinase-binding protein (TYROBP) cause Nasu-Hakola disease, a heritable disease resembling Alzheimer’s disease (AD). Methylation of N6 methyl-adenosine (m6A) in mRNA plays essential roles in learning and memory. Aberrant m6A methylation has been detected in AD patients and animal models. In the present study, Tyrobp–/– mice showed learning and memory deficits in the Morris water maze, which worsened with age. Tyrobp–/– mice also showed elevated levels of total tau, Ser202/Thr205-phosphorylated tau and amyloid β in the hippocampus and cerebrocortex, which worsened with aging. The m6A methyltransferase components METTL3, METTL14, and WTAP were downregulated in Tyrobp–/– mice, while expression of demethylases that remove the m6A modification (e.g., FTO and ALKBH5) were unaltered. Methylated RNA immunoprecipitation sequencing identified 498 m6A peaks that were upregulated in Tyrobp–/– mice, and 312 m6A peaks that were downregulated. Bioinformatic analysis suggested that most of these m6A peaks occur in sequences near stop codons and 3′-untranslated regions. These findings suggest an association between m6A RNA methylation and pathological TYROBP deficiency.
Collapse
Affiliation(s)
- Zhanyun Lv
- Zhejiang University Medical Center, Hangzhou, China
- School of Brain Science and Brain Medicine, Zhejiang University, Hangzhou, China
| | - Tongxiao Xu
- College of Clinical Medicine, Jining Medical University, Jining, China
| | - Ran Li
- Cheeloo College of Medicine, Shandong University, Jinan, China
| | - Dejie Zheng
- Health Management Center, Weifang People’s Hospital, Weifang, China
| | - Yanxin Li
- Department of Neurology, Pingdu People’s Hospital, Qingdao, China
| | - Wei Li
- College of Clinical Medicine, Jining Medical University, Jining, China
| | - Yan Yang
- College of Clinical Medicine, Jining Medical University, Jining, China
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
| | - Yanlei Hao
- College of Clinical Medicine, Jining Medical University, Jining, China
- Department of Neurology, The Affiliated Hospital of Jining Medical University, Jining, China
- *Correspondence: Yanlei Hao,
| |
Collapse
|
24
|
Xia MD, Yu RR, Chen DM. Identification of Hub Biomarkers and Immune-Related Pathways Participating in the Progression of Antineutrophil Cytoplasmic Antibody-Associated Glomerulonephritis. Front Immunol 2022; 12:809325. [PMID: 35069594 PMCID: PMC8766858 DOI: 10.3389/fimmu.2021.809325] [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] [Received: 11/04/2021] [Accepted: 12/13/2021] [Indexed: 12/24/2022] Open
Abstract
Background Antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis (AAV) is a systemic autoimmune disease that generally induces the progression of rapidly progressive glomerulonephritis (GN). The purpose of this study was to identify key biomarkers and immune-related pathways involved in the progression of ANCA-associated GN (ANCA-GN) and their relationship with immune cell infiltration. Methods Gene microarray data were downloaded from the Gene Expression Omnibus (GEO). Hub markers for ANCA-GN were mined based on differential expression analysis, weighted gene co-expression network analysis (WGCNA) and lasso regression, followed by Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) and Gene Set Enrichment Analysis (GSEA) of the differential genes. The infiltration levels of 28 immune cells in the expression profile and their relationship to hub gene markers were analysed using single-sample GSEA (ssGSEA). In addition, the accuracy of the hub markers in diagnosing ANCA-GN was subsequently evaluated using the receiver operating characteristic curve (ROC). Results A total of 651 differential genes were screened. Twelve co-expression modules were obtained via WGCNA; of which, one hub module (black module) had the highest correlation with ANCA-GN. A total of 66 intersecting genes were acquired by combining differential genes. Five hub genes were subsequently obtained by lasso analysis as potential biomarkers for ANCA-GN. The immune infiltration results revealed the most significant relationship among monocytes, CD4+ T cells and CD8+ T cells. ROC curve analysis demonstrated a prime diagnostic value of the five hub genes. According to the functional enrichment analysis of the differential genes, hub genes were mainly enhanced in immune- and inflammation-related pathways. Conclusion B cells and monocytes were closely associated with the pathogenesis of ANCA-GN. Hub genes (CYP3A5, SLC12A3, BGN, TAPBP and TMEM184B) may be involved in the progression of ANCA-GN through immune-related signal pathways.
Collapse
Affiliation(s)
- Meng-Di Xia
- Department of Nephrology, The Second Clinical Medical Institution of North Sichuan Medical College (Nanchong Central Hospital) and Nanchong Key Laboratory of Basic Science & Clinical Research on Chronic Kidney Disease, Nanchong, China.,Department of Nephrology and Medical Intensive Care, Charité - Universtitätsmedizin Berlin, Cooperate Member of Freie Universität and Humboldt Universität, Hindenburgdamm, Berlin, Germany
| | - Rui-Ran Yu
- Department of Oncology, Anqing First People's Hospital of Anhui Medical University, Anqing, China
| | - Dong-Ming Chen
- Department of Neurosurgery, The First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, China.,Charité - Universtitätsmedizin Berlin, Cooperate Member of Freie Universität and Humboldt Universität, Berlin, Germany
| |
Collapse
|
25
|
Ying L, Wu H, Zhou S, Lu H, Ding M, Wang B, Wang S, Mao Y, Xiao F, Li Y. Toll-Like Receptors Signaling Pathway of Quercetin Regulating Avian Beta-Defensin in the Ileum of Broilers. Front Cell Dev Biol 2022; 10:816771. [PMID: 35281079 PMCID: PMC8906402 DOI: 10.3389/fcell.2022.816771] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Accepted: 01/31/2022] [Indexed: 01/16/2023] Open
Abstract
The purpose of the experiment was to investigate the Toll-like receptor signaling pathway of quercetin regulating avian beta-defensin (AvBD) in the ileum of Arbor Acre (AA) broilers. Four hundred and eighty one-day-old Arbor Acre broilers with similar body weight, half male and female, were randomly allotted to four treatments; the control treatment and three dietary treatments were fed with the basal diets supplemented with 0, 0.02%, 0.04, and 0.06% quercetin, respectively. The results showed that dietary quercetin supplementation did not significantly influence growth performance (p > 0.05), but significantly decreased the mortality rate of broilers by 85.74%, 85.74, and 71.28%, respectively (p < 0.05, F = 9.06). Compared with control, dietary supplementation with 0.04 and 0.06% quercetin significantly upregulated mRNA expression of total AvBD (p < 0.05), and there were no significant differences in the mRNA expression of AvBD1, AvBD2, and AvBD14 in three quercetin supplementation groups in the ileum of AA broilers (p > 0.05). Dietary supplementation with 0.02 and 0.06% quercetin significantly downregulated the mRNA expression of total Toll-like receptors (p < 0.05). Dietary quercetin supplementation significantly downregulated the mRNA expression of TLR1A, TLR1B, and TLR2A (p < 0.05); however, there were no significant differences in the mRNA expression of TLR2B, TLR5, and TLR15 (p > 0.05). Dietary quercetin supplementation significantly downregulated the mRNA expression of myeloid differentiation primary response protein 88 (MyD88) and TIR domain-containing adaptor protein/MyD88-adaptor-like (TIRAP/MAL) (p < 0.05), 0.02% quercetin significantly downregulated the mRNA expression of tank-binding kinase1 (TBK1), IκB kinase complex-α (IKKα), IKKβ, IKKε, nuclear factor-kappa B (NF-κB), NF-κB inhibitor-alpha (IκBα), IκBα, IκBβ, TNF-receptor-associated factor 3 (TRAF3), and interferons regulatory factor 7 (IRF7) (p < 0.05), 0.04% quercetin significantly downregulated the mRNA expression of IKKβ, IKKε, NF-κB, IκBα, IκBβ, TRAF3, and TRAF6 (p < 0.05), and 0.06% quercetin significantly downregulated the mRNA expression of TBK1 and IKKα (p < 0.05). 0.02% quercetin significantly decreased the relative abundance of Escherichia, Staphylococcus (p < 0.05), and Salmonella (p < 0.01), 0.04% quercetin significantly decreased the relative abundance of Staphylococcus (p < 0.05), Escherichia, and Salmonella (p < 0.01), and 0.06% quercetin significantly decreased the relative abundance of Salmonella (p < 0.05) and Staphylococcus (p < 0.01) in the ileum of AA broilers. These findings suggested that dietary quercetin supplementation regulated the mRNA expression of AvBD, TLR, and the TLR signaling pathways and NF-κB signalling pathways, thereby maintaining the microecological balance of the intestinal tract and decreasing the mortality of broilers, and the optimum addition amount of quercetin is 0.04% under the test conditions.
Collapse
|
26
|
Saleh AA, Shehata WA, Abd-Elhafiz HI, Soliman SE. Potential impact of TNFAIP3 rs6920220 and DEFB1 rs1800972 gene polymorphisms on vitiligo in Egyptian patients. Meta Gene 2022. [DOI: 10.1016/j.mgene.2021.101002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
|
27
|
Kurago Z, Loveless J. Microbial Colonization and Inflammation as Potential Contributors to the Lack of Therapeutic Success in Oral Squamous Cell Carcinoma. FRONTIERS IN ORAL HEALTH 2022; 2:739499. [PMID: 35048056 PMCID: PMC8757816 DOI: 10.3389/froh.2021.739499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/03/2021] [Indexed: 12/15/2022] Open
Abstract
This review discusses the microenvironment of evolving and established conventional oral squamous cell carcinoma, by far the most common oral cancer. The focus of this paper is mainly on the more recent data that describe the role of microorganisms, host-microbial interactions, and in particular, the contributions of cell-surface toll-like receptors on immune system cells and on normal and malignant epithelial cells to their functions that support carcinogenesis. Because carcinomas arising at various host surfaces share much in common, additional information available from studies of other carcinomas is included in the discussion. Accumulating evidence reveals the complex toll-like receptor-mediated tumor-supporting input into many aspects of carcinogenesis via malignant cells, stromal immune cells and non-immune cells, complicating the search for effective treatments.
Collapse
Affiliation(s)
- Zoya Kurago
- Augusta University Dental College of Georgia, Augusta, GA, United States.,Medical College of Georgia, Augusta, GA, United States.,Georgia Cancer Center, Augusta, GA, United States
| | - Jenni Loveless
- Augusta University Dental College of Georgia, Augusta, GA, United States
| |
Collapse
|
28
|
Elimination of negative feedback in TLR signalling allows rapid and hypersensitive detection of microbial contaminants. Sci Rep 2021; 11:24414. [PMID: 34952917 PMCID: PMC8709846 DOI: 10.1038/s41598-021-03618-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 11/24/2021] [Indexed: 11/17/2022] Open
Abstract
The exquisite specificity of Toll-like receptors (TLRs) to sense microbial molecular signatures is used as a powerful tool to pinpoint microbial contaminants. Various cellular systems, from native human blood cells to transfected cell lines exploit TLRs as pyrogen detectors in biological preparations. However, slow cellular responses and limited sensitivity have hampered the replacement of animal-based tests such as the rabbit pyrogen test or lipopolysaccharide detection by Limulus amoebocyte lysate. Here, we report a novel human cell-based approach to boost detection of microbial contaminants by TLR-expressing cells. By genetic and pharmacologic elimination of negative control circuits, TLR-initiated cellular responses to bacterial molecular patterns were accelerated and significantly elevated. Combining depletion of protein phosphatase PP2ACA and pharmacological inhibition of PP1 in the optimized reporter cells further enhanced the sensitivity to allow detection of bacterial lipoprotein at 30 picogram/ml. Such next-generation cellular monitoring is poised to replace animal-based testing for microbial contaminants.
Collapse
|
29
|
Xu J, Zhang MY, Jiao W, Hu CQ, Wu DB, Yu JH, Chen GX. Identification of Candidate Genes Related to Synovial Macrophages in Rheumatoid Arthritis by Bioinformatics Analysis. Int J Gen Med 2021; 14:7687-7697. [PMID: 34764682 PMCID: PMC8575484 DOI: 10.2147/ijgm.s333512] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 10/11/2021] [Indexed: 12/11/2022] Open
Abstract
Objective Rheumatoid arthritis (RA) is one of the most prevalent inflammatory arthritis worldwide. However, the genes and pathways associated with macrophages from synovial fluids in RA patients still remain unclear. This study aims to screen and verify differentially expressed genes (DEGs) related to identifying candidate genes related to synovial macrophages in rheumatoid arthritis by bioinformatics analysis. Methods We searched the Gene Expression Omnibus (GEO) database, and GSE97779 and GSE10500 with synovial macrophages expression profiling from multiple RA microarray dataset were selected to conduct a systematic analysis. GSE97779 included nine macrophage samples from synovial fluids of RA patients and five macrophage samples from primary human blood of HC. GSE10500 included five macrophage samples from synovial fluids of RA patients and three macrophage samples from primary human blood of HC. Functional annotation of DEGs was performed, including Gene Ontology (GO) analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis. Protein–protein interaction (PPI) network of DEGs was established using the STRING database. CytoHubba was used to identify hub genes. MCODE was used to determine gene clusters in the interactive network. Results There were 2638 DEGs (1425 upregulated genes and 1213 downregulated ones) and 889 DEGs (438 upregulated genes and 451 downregulated ones) selected from GSE97779 and GSE10500, respectively. Venn diagrams showed that 173 genes were upregulated and 106 downregulated in both two datasets. The top 10 hub genes, including FN1, VEGFA, HGF, SERPINA1, MMP9, PPBP, CD44, FPR2, IGF1, and ITGAM, were identified using the PPI network. Conclusion This study provides new insights for the potential biomarkers and the relevant molecular mechanisms in RA patients. Our findings suggest that the 10 candidate genes might be used in diagnosis, prognosis, and therapy of RA in the future. However, further studies are required to confirm the expression of these genes in synovial macrophages in RA and control specimen.
Collapse
Affiliation(s)
- Jia Xu
- First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Ming-Ying Zhang
- Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Wei Jiao
- First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Cong-Qi Hu
- First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Dan-Bin Wu
- Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Jia-Hui Yu
- First Clinical Medical School, Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Guang-Xing Chen
- Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China.,Baiyun Hospital of The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, 510470, Guangdong, People's Republic of China
| |
Collapse
|
30
|
Nakano R, Tran LM, Geller DA, Macedo C, Metes DM, Thomson AW. Dendritic Cell-Mediated Regulation of Liver Ischemia-Reperfusion Injury and Liver Transplant Rejection. Front Immunol 2021; 12:705465. [PMID: 34262574 PMCID: PMC8273384 DOI: 10.3389/fimmu.2021.705465] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Accepted: 06/11/2021] [Indexed: 12/24/2022] Open
Abstract
Liver allograft recipients are more likely to develop transplantation tolerance than those that receive other types of organ graft. Experimental studies suggest that immune cells and other non-parenchymal cells in the unique liver microenvironment play critical roles in promoting liver tolerogenicity. Of these, liver interstitial dendritic cells (DCs) are heterogeneous, innate immune cells that appear to play pivotal roles in the instigation, integration and regulation of inflammatory responses after liver transplantation. Interstitial liver DCs (recruited in situ or derived from circulating precursors) have been implicated in regulation of both ischemia/reperfusion injury (IRI) and anti-donor immunity. Thus, livers transplanted from mice constitutively lacking DCs into syngeneic, wild-type recipients, display increased tissue injury, indicating a protective role of liver-resident donor DCs against transplant IRI. Also, donor DC depletion before transplant prevents mouse spontaneous liver allograft tolerance across major histocompatibility complex (MHC) barriers. On the other hand, mouse liver graft-infiltrating host DCs that acquire donor MHC antigen via "cross-dressing", regulate anti-donor T cell reactivity in association with exhaustion of graft-infiltrating T cells and promote allograft tolerance. In an early phase clinical trial, infusion of donor-derived regulatory DCs (DCreg) before living donor liver transplantation can induce alterations in host T cell populations that may be conducive to attenuation of anti-donor immune reactivity. We discuss the role of DCs in regulation of warm and liver transplant IRI and the induction of liver allograft tolerance. We also address design of cell therapies using DCreg to reduce the immunosuppressive drug burden and promote clinical liver allograft tolerance.
Collapse
Affiliation(s)
- Ryosuke Nakano
- Department of Surgery, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Lillian M. Tran
- Department of Surgery, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - David A. Geller
- Department of Surgery, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
- Liver Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, United States
| | - Camila Macedo
- Department of Surgery, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Diana M. Metes
- Department of Surgery, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| | - Angus W. Thomson
- Department of Surgery, Starzl Transplantation Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
- Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States
| |
Collapse
|
31
|
Meng Z, Xu R, Xie L, Wu Y, He Q, Gao P, He X, Chen Q, Xie Q, Zhang J, Yang Q. A20/Nrdp1 interaction alters the inflammatory signaling profile by mediating K48- and K63-linked polyubiquitination of effectors MyD88 and TBK1. J Biol Chem 2021; 297:100811. [PMID: 34023381 PMCID: PMC8233150 DOI: 10.1016/j.jbc.2021.100811] [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: 03/06/2021] [Revised: 05/10/2021] [Accepted: 05/19/2021] [Indexed: 11/16/2022] Open
Abstract
A20 is a potent anti-inflammatory protein that mediates both inflammation and ubiquitination in mammals, but the related mechanisms are not clear. In this study, we performed mass spectrometry (MS) screening, gene ontology (GO) analysis, and coimmunoprecipitation (co-IP) in a lipopolysaccharide (LPS)-induced inflammatory cell model to identify novel A20-interacting proteins. We confirmed that the E3 ubiquitin ligase Nrdp1, also known as ring finger protein 41 (RNF41), interacted with A20 in LPS-stimulated cells. Further co-IP analysis demonstrated that when A20 was knocked out, degradation-inducing K48-linked ubiquitination of inflammatory effector MyD88 was decreased, but protein interaction-mediating K63-linked ubiquitination of another inflammatory effector TBK1 was increased. Moreover, western blot experiments showed that A20 inhibition induced an increase in levels of MyD88 and phosphorylation of downstream effector proteins as well as of TBK1 and a downstream effector, while Nrdp1 inhibition induced an increase in MyD88 but a decrease in TBK1 levels. When A20 and Nrdp1 were coinhibited, no further change in MyD88 was observed, but TBK1 levels were significantly decreased compared with those upon A20 inhibition alone. Gain- and loss-of-function analyses revealed that the ZnF4 domain of A20 is required for Nrdp1 polyubiquitination. Upon LPS stimulation, the inhibition of Nrdp1 alone increased the secretion of IL-6 and TNF-α but decreased IFN-β secretion, as observed in other studies, suggesting that Nrdp1 preferentially promotes the production of IFN-β. Taken together, these results demonstrated that A20/Nrdp1 interaction is important for A20 anti-inflammation, thus revealing a novel mechanism for the anti-inflammatory effects of A20.
Collapse
Affiliation(s)
- Zhaoyou Meng
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China; Department of Neurobiology, Army Medical University (Third Military Medical University), Chongqing, China
| | - Rui Xu
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Lexing Xie
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yutong Wu
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qian He
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Pan Gao
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Xiaohui He
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qiong Chen
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China
| | - Qi Xie
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
| | - Jiqiang Zhang
- Department of Neurobiology, Army Medical University (Third Military Medical University), Chongqing, China.
| | - Qingwu Yang
- Department of Neurology, Xinqiao Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
| |
Collapse
|
32
|
Abstract
BACKGROUND Lupus B cells not only produce autoantibodies against nuclear antigens but also provide co-stimulation to T cells. However, there is still a lack of comprehensive understanding of the mechanism underlying lupus B cell hyperactivation. METHODS This study focuses on the detection of B cell activation status, analysis of early BCR signaling response, DNA sequencing, and quantity determination of BCR signaling regulators in murine lupus models. RESULTS Our result showed that there is a B cell hyperactivation with a significant elevation of B cell activation markers, and a BCR signaling hyperactivity with an abnormal increase of phosphorylated BCR signaling molecules and cytoplasmic calcium in the early response to BCR crosslinking in B6.Sle1/2/3 lupus mouse. Whole exome sequencing identified a multiple point mutation in the exon of many BCR signaling regulators in common murine lupus models, MRL/lpr, NZM2410, BXSB, NZB, and NZW strains. cNDA sequencing confirmed FcγR2b, Ly9, Pirb, Siglecg, and CD22 BCR signaling regulator variants in B6.Sle1/2/3 lupus mouse, but surface protein expression of these regulators on B cells showed an abnormal increase. CONCLUSION Our findings support that these BCR signaling regulator variants are potential causative genes of B cell hyperactivation in murine lupus models through their possible functional reduction.
Collapse
Affiliation(s)
- J Y Ju
- Department of Immunology, 372527Weifang Medical University, Weifang, China
| | - Z W Xu
- Department of Immunology, 372527Weifang Medical University, Weifang, China
| |
Collapse
|
33
|
Loss of Mef2D function enhances TLR induced IL-10 production in macrophages. Biosci Rep 2021; 40:225925. [PMID: 32725155 PMCID: PMC7442974 DOI: 10.1042/bsr20201859] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/27/2020] [Accepted: 07/29/2020] [Indexed: 12/24/2022] Open
Abstract
Mef2 transcription factors comprise a family of four different isoforms that regulate a number of processes including neuronal and muscle development. While roles for Mef2C and Mef2D have been described in B-cell development their role in immunity has not been extensively studied. In innate immune cells such as macrophages, TLRs drive the production of both pro- and anti-inflammatory cytokines. IL-10 is an important anti-inflammatory cytokine produced by macrophages and it establishes an autocrine feedback loop to inhibit pro-inflammatory cytokine production. We show here that macrophages from Mef2D knockout mice have elevated levels of IL-10 mRNA induction compared with wild-type cells following LPS stimulation. The secretion of IL-10 was also higher from Mef2D knockout macrophages and this correlated to a reduction in the secretion of TNF, IL-6 and IL-12p40. The use of an IL-10 neutralising antibody showed that this reduction in pro-inflammatory cytokine production in the Mef2D knockouts was IL-10 dependent. As the IL-10 promoter has previously been reported to contain a potential binding site for Mef2D, it is possible that the binding of other Mef2 isoforms in the absence of Mef2D may result in a higher activation of the IL-10 gene. Further studies with compound Mef2 isoforms would be required to address this. We also show that Mef2D is highly expressed in the thymus, but that loss of Mef2D does not affect thymic T-cell development or the production of IFNγ from CD8 T cells.
Collapse
|
34
|
Tizaoui K, Terrazzino S, Cargnin S, Lee KH, Gauckler P, Li H, Shin JI, Kronbichler A. The role of PTPN22 in the pathogenesis of autoimmune diseases: A comprehensive review. Semin Arthritis Rheum 2021; 51:513-522. [PMID: 33866147 DOI: 10.1016/j.semarthrit.2021.03.004] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 01/16/2021] [Accepted: 03/03/2021] [Indexed: 02/07/2023]
Abstract
The incidence of autoimmune diseases is increasing worldwide, thus stimulating studies on their etiopathogenesis, derived from a complex interaction between genetic and environmental factors. Genetic association studies have shown the PTPN22 gene as a shared genetic risk factor with implications in multiple autoimmune disorders. By encoding a protein tyrosine phosphatase expressed by the majority of cells belonging to the innate and adaptive immune systems, the PTPN22 gene may have a fundamental role in the development of immune dysfunction. PTPN22 polymorphisms are associated with rheumatoid arthritis, type 1 diabetes, systemic lupus erythematosus, and many other autoimmune conditions. In this review, we discuss the progress in our understanding of how PTPN22 impacts autoimmunity in both humans and animal models. In addition, we highlight the pathogenic significance of the PTPN22 gene, with particular emphasis on its role in T and B cells, and its function in innate immune cells, such as monocytes, dendritic and natural killer cells. We focus particularly on the complexity of PTPN22 interplay with biological processes of the immune system. Findings highlight the importance of studying the function of disease-associated PTPN22 variants in different cell types and open new avenues of investigation with the potential to drive further insights into mechanisms of PTPN22. These new insights will reveal important clues to the molecular mechanisms of prevalent autoimmune diseases and propose new potential therapeutic targets.
Collapse
Affiliation(s)
- Kalthoum Tizaoui
- Department of Basic Sciences, Division of Histology and Immunology, Faculty of Medicine Tunis, Tunis El Manar University, Tunis 1068, Tunisia
| | - Salvatore Terrazzino
- Department of Pharmaceutical Sciences and Interdepartmental Research Center of Pharmacogenetics and Pharmacogenomics (CRIFF), University of Piemonte Orientale, Novara, Italy
| | - Sarah Cargnin
- Department of Pharmaceutical Sciences and Interdepartmental Research Center of Pharmacogenetics and Pharmacogenomics (CRIFF), University of Piemonte Orientale, Novara, Italy
| | - Keum Hwa Lee
- Department of Pediatrics, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Philipp Gauckler
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Innsbruck, Austria
| | - Han Li
- University of Florida College of Medicine, Gainesville, FL 32610, United States
| | - Jae Il Shin
- Department of Pediatrics, Yonsei University College of Medicine, Seoul 03722, Republic of Korea.
| | - Andreas Kronbichler
- Department of Internal Medicine IV (Nephrology and Hypertension), Medical University Innsbruck, Innsbruck, Austria
| |
Collapse
|
35
|
Wang B, Su Q, Luo J, Li M, Wu Q, Chang H, Du J, Huang C, Ma J, Han S, Yuan G, He Y, Guo M, Zhang Q, He H. Differences in Highly Pathogenic H5N6 Avian Influenza Viral Pathogenicity and Inflammatory Response in Chickens and Ducks. Front Microbiol 2021; 12:593202. [PMID: 33584608 PMCID: PMC7878534 DOI: 10.3389/fmicb.2021.593202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 01/06/2021] [Indexed: 01/09/2023] Open
Abstract
Infection with H5N6 highly pathogenic avian influenza virus caused high mortality in chickens, while ducks often appear to be asymptomatic. But, some recent H5Nx subtype viruses could cause high mortality in ducks. The variation between different species and the mechanisms by which some H5Nx viruses cause death in ducks requires investigation to identify the key processes in influenza susceptibility and pathogenesis. Here, we characterized two representative H5N6 viruses, A/Pavo cristatus/Jiangxi/JA1/2016 (JA1) and A/Anas crecca/shanghai/SH1/2016 (SH1), and compared their pathogenicity and expression profiles of immune-related genes in chickens and ducks to identify the elements of the host immune-related response that were involved in disease lethality. Results suggested that H5N6 HPAIVs had higher pathogenic and inflammatory effect in chickens than in ducks. Importantly, the TNF-α, IL-6, IFN-γ and iNOS levels were significantly higher in the lung of SH1 infected chickens compared to those of ducks. And we found higher systemic levels of IL-6 induced by JA1 in chickens than in ducks. In addition, our experiments demonstrated that JA1 was associated with greater pathogenicity in ducks were accompanied by the excessive expression of iNOS in the brain. These results are helpful to understand the relationship between the pathogenicity of H5N6 AIVs and inflammatory responses to them in chickens and ducks.
Collapse
Affiliation(s)
- Bo Wang
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Qianqian Su
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Jing Luo
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Meng Li
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qiaoxing Wu
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Han Chang
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Juan Du
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Chengmei Huang
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Jiajun Ma
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China.,College of Life Science, University of Chinese Academy of Sciences, Beijing, China
| | - Shuyi Han
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Guohui Yuan
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Yapeng He
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Minglei Guo
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Qingxun Zhang
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Hongxuan He
- National Research Center for Wildlife-Borne Diseases, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| |
Collapse
|
36
|
Francian A, Widmer A, Olsson T, Ramirez M, Heald D, Rasic K, Adams L, Martinson H, Kullberg M. Delivery of toll-like receptor agonists by complement C3-targeted liposomes activates immune cells and reduces tumour growth. J Drug Target 2021; 29:754-760. [PMID: 33472457 DOI: 10.1080/1061186x.2021.1878364] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Activation of antigen presenting cells (APCs) is necessary for immune recognition and elimination of cancer. Our lab has developed a liposome nanoparticle that binds to complement C3 proteins present in serum. These C3-liposomes are specifically internalised by APCs and other myeloid cells, which express complement C3-binding receptors. Known immune stimulating compounds, toll-like receptor (TLR) agonists, were encapsulated within the C3-liposomes, including monophosphoryl lipid A (MPLA), R848, and CpG 1826, specific for TLR4, TLR7/8, and TLR9 respectively. When recognised by their respective TLRs within the myeloid cells, these compounds trigger signal cascades that ultimately lead to increased expression of inflammatory cytokines and activation markers (CD80, CD83, CD86 and CD40). RT-PCR analysis of murine bone marrow cells treated with C3-liposomes revealed a significant increase in gene expression of pro-inflammatory cytokines and factors (IL-1β, IL-6, IL-12, TNF-α, IRF7, and IP-10). Furthermore, treatment of 4T1 tumour-bearing mice with C3-liposomes containing TLR agonists resulted in reduced tumour growth, compared to PBS treated mice. Collectively, these results demonstrate that C3-liposome delivery of TLR agonists activates APCs and induces tumour-specific adaptive immune responses, leading to reduced tumour growth in a breast cancer model.
Collapse
Affiliation(s)
- Alexandra Francian
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| | - Ashley Widmer
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| | - Troy Olsson
- Department of Chemistry, University of Alaska Anchorage, Anchorage, AK, USA
| | - Marisabel Ramirez
- Department of Chemistry, University of Alaska Anchorage, Anchorage, AK, USA
| | - Darion Heald
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| | - Keaton Rasic
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| | - Luke Adams
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| | - Holly Martinson
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| | - Max Kullberg
- WWAMI School of Medical Education, University of Alaska Anchorage, Anchorage, AK, USA
| |
Collapse
|
37
|
Aging and Microglial Response following Systemic Stimulation with Escherichia coli in Mice. Cells 2021; 10:cells10020279. [PMID: 33573322 PMCID: PMC7912649 DOI: 10.3390/cells10020279] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 01/21/2021] [Accepted: 01/25/2021] [Indexed: 12/30/2022] Open
Abstract
Systemic infection is an important risk factor for the development cognitive impairment and neurodegeneration in older people. Animal experiments show that systemic challenges with live bacteria cause a neuro-inflammatory response, but the effect of age on this response in these models is unknown. Young (2 months) and middle-aged mice (13-14 months) were intraperitoneally challenged with live Escherichia coli (E. coli) or saline. The mice were sacrificed at 2, 3 and 7 days after inoculation; for all time points, the mice were treated with ceftriaxone (an antimicrobial drug) at 12 and 24 h after inoculation. Microglial response was monitored by immunohistochemical staining with an ionized calcium-binding adaptor molecule 1 (Iba-1) antibody and flow cytometry, and inflammatory response by mRNA expression of pro- and anti-inflammatory mediators. We observed an increased microglial cell number and moderate morphologically activated microglial cells in middle-aged mice, as compared to young mice, after intraperitoneal challenge with live E. coli. Flow cytometry of microglial cells showed higher CD45 and CD11b expressions in middle-aged infected mice compared to young infected mice. The brain expression levels of pro-inflammatory genes were higher in middle-aged than in young infected mice, while middle-aged infected mice had similar expression levels of these genes in the systemic compartment. We conclude that systemic challenge with live bacteria causes an age-dependent neuro-inflammatory and microglial response. Our data show signs of an age-dependent disconnection of the inflammatory transcriptional signature between the brain and the systemic compartment.
Collapse
|
38
|
Induction of Allograft Tolerance While Maintaining Immunity Against Microbial Pathogens: Does Coronin 1 Hold a Key? Transplantation 2020; 104:1350-1357. [PMID: 31895336 DOI: 10.1097/tp.0000000000003101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Selective suppression of graft rejection while maintaining anti-pathogen responses has been elusive. Thus far, the most successful strategies to induce suppression of graft rejection relies on inhibition of T-cell activation. However, the very same mechanisms that induce allograft-specific T-cell suppression are also important for immunity against microbial pathogens as well as oncogenically transformed cells, resulting in significant immunosuppression-associated comorbidities. Therefore, defining the pathways that differentially regulate anti-graft versus antimicrobial T-cell responses may allow the development of regimen to induce allograft-specific tolerance. Recent work has defined a molecular pathway driven by the immunoregulatory protein coronin 1 that regulates the phosphodiesterase/cyclic adenosine monophosphate pathway and modulates T cell responses. Interestingly, disruption of coronin 1 promotes allograft tolerance while immunity towards a range of pathogenic microbes is maintained. Here, we briefly review the work leading up to these findings as well as their possible implications for transplantation medicine.
Collapse
|
39
|
Constitutive immune mechanisms: mediators of host defence and immune regulation. Nat Rev Immunol 2020; 21:137-150. [PMID: 32782357 PMCID: PMC7418297 DOI: 10.1038/s41577-020-0391-5] [Citation(s) in RCA: 138] [Impact Index Per Article: 34.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/01/2020] [Indexed: 02/07/2023]
Abstract
The immune system enables organisms to combat infections and to eliminate endogenous challenges. Immune responses can be evoked through diverse inducible pathways. However, various constitutive mechanisms are also required for immunocompetence. The inducible responses of pattern recognition receptors of the innate immune system and antigen-specific receptors of the adaptive immune system are highly effective, but they also have the potential to cause extensive immunopathology and tissue damage, as seen in many infectious and autoinflammatory diseases. By contrast, constitutive innate immune mechanisms, including restriction factors, basal autophagy and proteasomal degradation, tend to limit immune responses, with loss-of-function mutations in these pathways leading to inflammation. Although they function through a broad and heterogeneous set of mechanisms, the constitutive immune responses all function as early barriers to infection and aim to minimize any disruption of homeostasis. Supported by recent human and mouse data, in this Review we compare and contrast the inducible and constitutive mechanisms of immunosurveillance.
Collapse
|
40
|
Cron MA, Guillochon É, Kusner L, Le Panse R. Role of miRNAs in Normal and Myasthenia Gravis Thymus. Front Immunol 2020; 11:1074. [PMID: 32587589 PMCID: PMC7297979 DOI: 10.3389/fimmu.2020.01074] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 05/04/2020] [Indexed: 12/15/2022] Open
Abstract
The thymus, a primary lymphoid organ, provides a complex environment essential for the generation of the T-cell repertoire. Thymic alterations occur during life either in the context of thymic involution upon aging or the pathophysiological context of Myasthenia Gravis (MG). These changes involve complicated regulatory networks, in which microRNAs (miRNAs) are key players. Here, we analyzed the role of miRNAs in thymocyte maturation and differentiation sustained by thymic epithelial cells. We compared data from the literature regarding the role of mouse thymic miRNAs and original data obtained from a human thymic miRnome study. We identified a set of highly expressed miRNAs defined as ThymiRs and investigated miRNA expression in infants as compared to adults to determine those associated with human thymic involution. Thymic changes are also frequently observed in MG, an autoimmune disease which results in the production of anti-acetylcholine receptor (AChR) antibodies that lead to muscle weaknesses. Alterations such as thymoma in late-onset MG patients and hyperplasia with ectopic germinal centers (GCs) in early-onset (EOMG) patients are found. Thymic miRNA expression has been studied in AChR-MG patients both in thymoma-associated MG (TAMG) and EOMG, and their function through their mRNA targets investigated. Most of the dysregulated thymic miRNAs in EOMG are associated with GC development, such as miR-7, miR-24, miR-139, miR-143, miR-145, miR-146, miR-150, miR-452, miR-548 or thymic inflammation, such as miR-125b, miR-146, or miR-29. Understanding these pathways may provide therapeutic targets or biomarkers of disease manifestations.
Collapse
Affiliation(s)
- Mélanie A Cron
- Sorbonne University, INSERM, Association Institute of Myology, Center of Research in Myology, Paris, France
| | - Émilie Guillochon
- Sorbonne University, INSERM, Association Institute of Myology, Center of Research in Myology, Paris, France
| | - Linda Kusner
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC, United States
| | - Rozen Le Panse
- Sorbonne University, INSERM, Association Institute of Myology, Center of Research in Myology, Paris, France
| |
Collapse
|
41
|
Meng Y, Li J, Ye Z, Yin Z, Sun Q, Liao Z, Li G, Deng J, Liu L, Yu Y, Wu L, Zhou H, Shen N. MicroRNA-148a facilitates inflammatory dendritic cell differentiation and autoimmunity by targeting MAFB. JCI Insight 2020; 5:133721. [PMID: 32213710 DOI: 10.1172/jci.insight.133721] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 03/18/2020] [Indexed: 01/11/2023] Open
Abstract
Monocyte-derived DCs (moDCs) have been implicated in the pathogenesis of autoimmunity, but the molecular pathways determining the differentiation potential of these cells remain unclear. Here, we report that microRNA-148a (miR-148a) serves as a critical regulator for moDC differentiation. First, miR-148a deficiency impaired the moDC development in vitro and in vivo. A mechanism study showed that MAFB, a transcription factor that hampers moDC differentiation, was a direct target of miR-148a. In addition, a promoter study identified that miR-148a could be transcriptionally induced by PU.1, which is crucial for moDC generation. miR-148a ablation eliminated the inhibition of PU.1 on MAFB. Furthermore, we found that miR-148a increased in monocytes from patients with psoriasis, and miR-148a deficiency or intradermal injection of antagomir-148a immensely alleviated the development of psoriasis-like symptoms in a psoriasis-like mouse model. Therefore, these results identify a pivotal role for the PU.1-miR-148a-MAFB circuit in moDC differentiation and suggest a potential therapeutic avenue for autoimmunity.
Collapse
Affiliation(s)
- Yao Meng
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Jun Li
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Zhizhong Ye
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Zhihua Yin
- Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Qing Sun
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Zhuojun Liao
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Guanhua Li
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Jun Deng
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Lu Liu
- Institute of Dermatology and Department of Dermatology, First Affiliated Hospital, Anhui Medical University, Hefei, Anhui, China
| | - Yuqing Yu
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China
| | - Li Wu
- Tsinghua-Peking Joint Center for Life Sciences, Tsinghua University School of Medicine, Beijing, China
| | - Haibo Zhou
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China.,Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China
| | - Nan Shen
- Shanghai Institute of Rheumatology, Renji Hospital, Shanghai Jiao Tong University School of Medicine (SJTUSM), Shanghai, China.,Shenzhen Futian Hospital for Rheumatic Diseases, Shenzhen, China.,Center for Autoimmune Genomics and Etiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,State Key Laboratory of Oncogenes and Related Genes, Shanghai Cancer Institute, Renji Hospital, SJTUSM, Shanghai, China
| |
Collapse
|
42
|
Lauenstein JU, Scherm MJ, Udgata A, Moncrieffe MC, Fisher DI, Gay NJ. Negative Regulation of TLR Signaling by BCAP Requires Dimerization of Its DBB Domain. THE JOURNAL OF IMMUNOLOGY 2020; 204:2269-2276. [PMID: 32198144 PMCID: PMC7128310 DOI: 10.4049/jimmunol.1901210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/31/2020] [Indexed: 01/12/2023]
Abstract
Dimerization of the BCAP Toll/IL1 domain is required for function. BCAP TIR modulates the oligomerization state of TLR signaling adaptor MAL. TIG domains are a promiscuous dimerization module in gene expression and signaling.
The B cell adaptor protein (BCAP) is a multimodular regulator of inflammatory signaling in diverse immune system cells. BCAP couples TLR signaling to phosphoinositide metabolism and inhibits MyD88-directed signal transduction. BCAP is recruited to the TLR signalosome forming multitypic interactions with the MAL and MyD88 signaling adaptors. In this study, we show that indirect dimerization of BCAP TIR is required for negative regulation of TLR signaling. This regulation is mediated by a transcription factor Ig (TIG/IPT) domain, a fold found in the NF-κB family of transcription factors. We have solved the crystal structure of the BCAP TIG and find that it is most similar to that of early B cell factor 1 (EBF1). In both cases, the dimer is stabilized by a helix-loop-helix motif at the C terminus and interactions between the β-sheets of the Ig domains. BCAP is exclusively localized in the cytosol and is unable to bind DNA. Thus, the TIG domain is a promiscuous dimerization module that has been appropriated for a range of regulatory functions in gene expression and signal transduction.
Collapse
Affiliation(s)
- Johannes U Lauenstein
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom; and
| | - Michael J Scherm
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom; and
| | - Atul Udgata
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom; and
| | - Martin C Moncrieffe
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom; and
| | - David I Fisher
- Discovery Biology, Discovery Sciences, R&D, AstraZeneca, Cambridge CB4 0WG, United Kingdom
| | - Nicholas J Gay
- Department of Biochemistry, University of Cambridge, Cambridge CB2 1GA, United Kingdom; and
| |
Collapse
|
43
|
Tajbakhsh A, Rezaee M, Barreto GE, Moallem SA, Henney NC, Sahebkar A. The role of nuclear factors as “Find-Me”/alarmin signals and immunostimulation in defective efferocytosis and related disorders. Int Immunopharmacol 2020; 80:106134. [DOI: 10.1016/j.intimp.2019.106134] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 12/16/2019] [Accepted: 12/16/2019] [Indexed: 12/22/2022]
|
44
|
Soltani N, Marandi SM, Kazemi M, Esmaeil N. The Exercise Training Modulatory Effects on the Obesity-Induced Immunometabolic Dysfunctions. Diabetes Metab Syndr Obes 2020; 13:785-810. [PMID: 32256095 PMCID: PMC7090203 DOI: 10.2147/dmso.s234992] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Accepted: 02/18/2020] [Indexed: 12/13/2022] Open
Abstract
Reduced physical activity rate in people's lifestyle is a global concern associated with the prevalence of health disorders such as obesity and metabolic disturbance. Ample evidence has indicated a critical role of the immune system in the aggravation of obesity. The type, duration, and production of adipose tissue-released mediators may change subsequent inactive lifestyle-induced obesity, leading to the chronic systematic inflammation and monocyte/macrophage (MON/MФ) phenotype polarization. Preliminary adipose tissue expansion can be inhibited by changing the lifestyle. In this context, exercise training is widely recommended due to a definite improvement of energy balance and the potential impacts on the inflammatory signaling cascades. How exercise training affects the immune system has not yet been fully elucidated, because its anti-inflammatory, pro-inflammatory, or even immunosuppressive impacts have been indicated in the literature. A thorough understanding of the mechanisms triggered by exercise can suggest a new approach to combat meta-inflammation-induced metabolic diseases. In this review, we summarized the obesity-induced inflammatory pathways, the roles of MON/MФ polarization in adipose tissue and systemic inflammation, and the underlying inflammatory mechanisms triggered by exercise during obesity.
Collapse
Affiliation(s)
- Nakisa Soltani
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran
| | - Sayed Mohammad Marandi
- Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, Iran
- Sayed Mohammad Marandi Department of Exercise Physiology, Faculty of Sport Sciences, University of Isfahan, Isfahan, IranTel +983137932358Fax +983136687572 Email
| | - Mohammad Kazemi
- Department of Genetics and Molecular Biology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Nafiseh Esmaeil
- Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Correspondence: Nafiseh Esmaeil Department of Immunology, School of Medicine, Isfahan University of Medical Sciences, Isfahan81744-176, IranTel +98 31 37929097Fax +98 3113 7929031 Email
| |
Collapse
|
45
|
RM, a novel resveratrol derivative, attenuates inflammatory responses induced by lipopolysaccharide via selectively increasing the Tollip protein in macrophages: A partial mechanism with therapeutic potential in an inflammatory setting. Int Immunopharmacol 2020; 78:106072. [DOI: 10.1016/j.intimp.2019.106072] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Revised: 11/07/2019] [Accepted: 11/21/2019] [Indexed: 02/08/2023]
|
46
|
Lima BHF, Marques PE, Gomides LF, Mattos MS, Kraemer L, Queiroz-Junior CM, Lennon M, Hirsch E, Russo RC, Menezes GB, Hessel EM, Amour A, Teixeira MM. Converging TLR9 and PI3Kgamma signaling induces sterile inflammation and organ damage. Sci Rep 2019; 9:19085. [PMID: 31836766 PMCID: PMC6910931 DOI: 10.1038/s41598-019-55504-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 11/24/2019] [Indexed: 12/13/2022] Open
Abstract
Toll-like receptor 9 (TLR9) and Phosphatidylinositol-3-kinase gamma (PI3Kγ) are very important effectors of the immune response, however, the importance of such crosstalk for disease development is still a matter of discussion. Here we show that PI3Kγ is required for immune responses in which TLR9 is a relevant trigger. We demonstrate the requirement of PI3Kγ for TLR9-induced inflammation in a model of CpG-induced pleurisy. Such requirement was further observed in inflammatory models where DNA sensing via TLR9 contributes to disease, such as silicosis and drug-induced liver injury. Using adoptive transfer, we demonstrate that PI3Kγ is important not only in leukocytes but also in parenchymal cells for the progression of inflammation. We demonstrate this crosstalk between TLR9 and PI3Kγ in vitro using human PBMCs. The inhibition of PI3Kγ in CpG-stimulated PBMCs resulted in reduction of both cytokine production and phosphorylated Akt. Therefore, drugs that target PI3Kγ have the potential to treat diseases mediated by excessive TLR9 signalling.
Collapse
Affiliation(s)
- Braulio Henrique Freire Lima
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Pedro Elias Marques
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lindisley Ferreira Gomides
- Center for Gastrointestinal Biology, Instituto de Ciências Biológicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Matheus Silvério Mattos
- Physiology and Biophysics/Instituto de Ciencias Biologicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Lucas Kraemer
- Physiology and Biophysics/Instituto de Ciencias Biologicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Celso M Queiroz-Junior
- Departament of Morphology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Mark Lennon
- Target Sciences, GlaxoSmithKline, Stevenage, Hertfordshire, Stevenage, United Kingdom
| | - Emilio Hirsch
- Department ot Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Torino, Italy
| | - Remo Castro Russo
- Physiology and Biophysics/Instituto de Ciencias Biologicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gustavo Batista Menezes
- Center for Gastrointestinal Biology, Instituto de Ciências Biológicas, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Edith M Hessel
- Refractory Respiratory Inflammation DPU, GlaxoSmithKline, Hertfordshire, Stevenage, United Kingdom
| | - Augustin Amour
- Refractory Respiratory Inflammation DPU, GlaxoSmithKline, Hertfordshire, Stevenage, United Kingdom
| | - Mauro Martins Teixeira
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Feredal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
| |
Collapse
|
47
|
Mino T, Iwai N, Endo M, Inoue K, Akaki K, Hia F, Uehata T, Emura T, Hidaka K, Suzuki Y, Standley DM, Okada-Hatakeyama M, Ohno S, Sugiyama H, Yamashita A, Takeuchi O. Translation-dependent unwinding of stem-loops by UPF1 licenses Regnase-1 to degrade inflammatory mRNAs. Nucleic Acids Res 2019; 47:8838-8859. [PMID: 31329944 PMCID: PMC7145602 DOI: 10.1093/nar/gkz628] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 07/05/2019] [Accepted: 07/12/2019] [Indexed: 01/14/2023] Open
Abstract
Regnase-1-mediated mRNA decay (RMD), in which inflammatory mRNAs harboring specific stem–loop structures are degraded, is a critical part of proper immune homeostasis. Prior to initial translation, Regnase-1 associates with target stem–loops but does not carry out endoribonucleolytic cleavage. Single molecule imaging revealed that UPF1 is required to first unwind the stem–loops, thus licensing Regnase-1 to proceed with RNA degradation. Following translation, Regnase-1 physically associates with UPF1 using two distinct points of interaction: The Regnase-1 RNase domain binds to SMG1-phosphorylated residue T28 in UPF1; in addition, an intrinsically disordered segment in Regnase-1 binds to the UPF1 RecA domain, enhancing the helicase activity of UPF1. The SMG1-UPF1–Regnase-1 axis targets pioneer rounds of translation and is critical for rapid resolution of inflammation through restriction of the number of proteins translated by a given mRNA. Furthermore, small-molecule inhibition of SMG1 prevents RNA unwinding in dendritic cells, allowing post-transcriptional control of innate immune responses.
Collapse
Affiliation(s)
- Takashi Mino
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Noriki Iwai
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Masayuki Endo
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.,Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-ushinomiyacho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Kentaro Inoue
- Department of Computer Science and Systems Engineering, Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan
| | - Kotaro Akaki
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Fabian Hia
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Takuya Uehata
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Tomoko Emura
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kumi Hidaka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Yutaka Suzuki
- Laboratory of Functional Genomics, Department of Medical Genome Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba 277-8562, Japan
| | - Daron M Standley
- Department of Genome Informatics, Genome Information Research Center, Research Institute for Microbial Diseases (RIMD), Osaka University, Osaka 565-0871, Japan
| | - Mariko Okada-Hatakeyama
- Laboratory for Integrated Cellular Systems, RIKEN Center for Integrative Medical Sciences, Yokohama 230-0045, Japan.,Laboratory of Cell Systems, Institute for Protein Research, Osaka University, Osaka 565-0871, Japan
| | - Shigeo Ohno
- Department of Molecular Biology, Yokohama City University School of Medicine, Kanagawa 236-0004, Japan
| | - Hiroshi Sugiyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan.,Institute for Integrated Cell-Material Sciences (iCeMS), Kyoto University, Yoshida-ushinomiyacho, Sakyo-ku, Kyoto 606-8501, Japan
| | - Akio Yamashita
- Department of Molecular Biology, Yokohama City University School of Medicine, Kanagawa 236-0004, Japan
| | - Osamu Takeuchi
- Department of Medical Chemistry, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| |
Collapse
|
48
|
The role of toll-like receptors in myocardial toxicity induced by doxorubicin. Immunol Lett 2019; 217:56-64. [PMID: 31707054 DOI: 10.1016/j.imlet.2019.11.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Revised: 10/21/2019] [Accepted: 11/06/2019] [Indexed: 02/06/2023]
Abstract
Doxorubicin is an effective antitumor drug commonly used in the treatment of a wide variety of cancers. However, doxorubicin may cause cardiac toxicity, which can cause congestive heart failure in severe cases, and this seriously limits its clinical application. It is believed that doxorubicin promotes the formation of reactive oxygen species, inducing oxidative stress, and at the same time, reduces the content of antioxidant substances in cardiac tissues, causing adverse effects. Toll-like receptors (TLRs) are biomolecules expressed on the surfaces of macrophages, dendritic cells, and epithelial cells that can recognize various types of pathogen-related or damage-related molecular patterns. In recent years, a large number of studies have confirmed that TLRs play important roles in the cardiac toxicity induced by doxorubicin. This review aimed to explore the role of TLRs in the cardiac toxicity induced by doxorubicin and provide possible solutions.
Collapse
|
49
|
The Mechanistic Differences in HLA-Associated Carbamazepine Hypersensitivity. Pharmaceutics 2019; 11:pharmaceutics11100536. [PMID: 31618895 PMCID: PMC6835980 DOI: 10.3390/pharmaceutics11100536] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/01/2019] [Accepted: 10/09/2019] [Indexed: 01/15/2023] Open
Abstract
Drug hypersensitivity reactions that resemble acute immune reactions are linked to certain human leucocyte antigen (HLA) alleles. Severe and life-threatening Stevens Johnson Syndrome and Toxic Epidermal Necrolysis following treatment with the antiepileptic and psychotropic drug Carbamazepine are associated with HLA-B*15:02; whereas carriers of HLA-A*31:01 develop milder symptoms. It is not understood how these immunogenic differences emerge genotype-specific. For HLA-B*15:02 an altered peptide presentation has been described following exposure to the main metabolite of carbamazepine that is binding to certain amino acids in the F pocket of the HLA molecule. The difference in the molecular mechanism of these diseases has not been comprehensively analyzed, yet; and is addressed in this study. Soluble HLA-technology was utilized to examine peptide presentation of HLA-A*31:01 in presence and absence of carbamazepine and its main metabolite and to examine the mode of peptide loading. Proteome analysis of drug-treated and untreated cells was performed. Alterations in sA*31:01-presented peptides after treatment with carbamazepine revealed different half-life times of peptide-HLA- or peptide-drug-HLA complexes. Together with observed changes in the proteome elicited through carbamazepine or its metabolite these results illustrate the mechanistic differences in carbamazepine hypersensitivity for HLA-A*31:01 or B*15:02 patients and constitute the bridge between pharmacology and pharmacogenetics for personalized therapeutics.
Collapse
|
50
|
Luo X, Xiao B, Xiao Z. Anti-Inflammatory Activity of Adenosine 5'-Trisphosphate in Lipopolysaccharide-Stimulated Human Umbilical Vein Endothelial Cells Through Negative Regulation of Toll-Like Receptor MyD88 Signaling. DNA Cell Biol 2019; 38:1557-1563. [PMID: 31580158 DOI: 10.1089/dna.2019.4773] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Activation of TLR4-MyD88-NF-κB signaling by lipopolysaccharide (LPS) evokes a proinflammatory immune response, and plays a pivotal role in initiation and progression of atherosclerosis (AS). ATP (adenosine 5'-trisphosphate), a powerful extracellular signal transduction molecule, functions to regulate immune inflammatory responses depending on the type of P2 receptors and cell lines. In this study, we first performed RT-PCR to detect the mRNA expression of monocyte chemoattractant protein-1 (MCP-1), IL-8, and IL-1β induced by different concentrations of LPS in human umbilical vein endothelial cells (HUVECs). Protein level of TLR4 signaling including TLR4, myeloid differentiation factor (MyD88), and CD14 induced by LPS (1 μg/mL) at different times (0, 10, 30, 60, 120 min) was analyzed by Western blot. Then, RT-PCR was performed to detect the effect of different concentrations of ATP on mRNA expression of IL-1β and MCP-1 induced by LPS (1 μg/mL) and the TLR4 signaling pathway. Western blot was performed to detect the effect of low concentrations of ATP on phosphorylation of p65 induced by 1 μg/mL LPS. Finally, we used P2Y receptor blocker Suramin to verify whether the role of ATP on LPS-induced inflammatory cytokine expression was through P2Y receptors. The results showed that LPS upregulated the expression of MCP-1, IL-8, and IL-1β in a dose-dependent manner accompanied by the activation of TLR4-MyD88 signaling in HUVECs. Only low concentration ATP (1, 10 μM) inhibited LPS-induced mRNA expression of IL-1β and MCP-1. ATP at low concentrations also downregulated the mRNA expression of TLR4, CD14, and MyD88 and inhibited LPS-induced phosphorylation of p65. Furthermore, Suramin, a nonspecific P2Y receptor antagonist, did not attenuate the inhibition of ATP on LPS-induced IL-1β and MCP-1 expression. Taking this together, low concentration ATP inhibited LPS-induced inflammation in HUVECs by negatively regulating TLR4-MyD88 signaling, and P2Y receptors were not involved in this process, which might provide new ideas for prevention and treatment of inflammatory diseases such as AS.
Collapse
Affiliation(s)
- Xueyang Luo
- Department of Geriatric Cardiology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Bolin Xiao
- School of Stomatological, WuHan University, Wuhan, Hubei, China
| | - Zhilin Xiao
- Department of Geriatric Cardiology, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China
| |
Collapse
|