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Yang Q, Wang Y, Cao G, Li X, Zhao T. Anti-sepsis effect of Xiaochaihu decoction based on the TLR4/ MyD88/NF-κB signalling pathway. Heliyon 2024; 10:e26712. [PMID: 38434364 PMCID: PMC10907734 DOI: 10.1016/j.heliyon.2024.e26712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 02/08/2024] [Accepted: 02/19/2024] [Indexed: 03/05/2024] Open
Abstract
The aims of this study were to explore the protective effect of Xiaochaihu decoction in mice with sepsis induced by intraperitoneal injection; to explore its anti-inflammatory effect on the TLR4-MyD88-NF-κB signalling pathway; and to explore the main material basis of the anti-inflammatory effect of Xiaochaihu decoction, with the aim of supplementing and expanding the associated research and providing a scientific foundation for the clinical use of the decoction. The effects of Xiaochaihu decoction on septic mice were analysed by measurements of white blood cells (WBC) and Platelets (PLT); Nitric Oxide (NO) level in serum; IL-6, IL-1β and TNF-α levels in serum; RT-PCR; Haematoxylin-Eosin (HE) immunohistochemistry; western blotting (WB). The results showed the excellent in vivo anti-inflammatory effects of Xiaochaihu decoction in LPS-induced septic mice, through down regulation of the gene and protein expression of TLR4, MYD88, TRAF6, IKK, IKBα and p65 and the subsequent reduction in the release of inflammatory mediators IL-6, IL-1β, TNF-α and NO. Moreover, significant anti-septic effect was observed from high and medium doses of Xiaochaihu decoction, but not from the low dose.
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Affiliation(s)
- Qingxin Yang
- Department of Pharmacy, MianYang Orthopaedic Hospital, Mianyang, 621000, PR China
| | - Yulong Wang
- Office of Party and Government Affairs, MianYang Orthopaedic Hospital, Mianyang, 621000, PR China
| | - Gefei Cao
- Office of Party and Government Affairs, MianYang Orthopaedic Hospital, Mianyang, 621000, PR China
| | - Xiaoqing Li
- Pharmaceutical Department, MianYang Hospital of Traditional Chinese Medicine, Mianyang, 621000, PR China
| | - Tinghui Zhao
- Burn and Plastic Surgery, MianYang Central Hospital, Mianyang, 621000, PR China
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Chan NR, Hwang B, Mulligan MS, Ratner BD, Bryers JD. Porous Precision-Templated 40 μm Pore Scaffolds Promote Healing through Synergy in Macrophage Receptor with Collagenous Structure and Toll-Like Receptor Signaling. Tissue Eng Part A 2024. [PMID: 38205652 DOI: 10.1089/ten.tea.2023.0144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024] Open
Abstract
Porous precision-templated scaffolds (PTS) with uniform, interconnected, 40 μm pores have shown favorable healing outcomes and a reduced foreign body reaction (FBR). Macrophage receptor with collagenous structure (MARCO) and toll-like receptors (TLRs) have been identified as key surface receptors in the initial inflammatory phase of wound healing. However, the role of MARCO and TLRs in modulating monocyte and macrophage phenotypes within PTS remains uncharacterized. In this study, we demonstrate a synergetic relationship between MARCO and TLR signaling in cells inhabiting PTS, where induction with TLR3 or TLR4 agonists to 40 μm scaffold-resident cells upregulates the transcription of MARCO. Upon deletion of MARCO, the prohealing phenotype within 40 μm PTS polarizes to a proinflammatory and profibrotic phenotype. Analysis of downstream TLR signaling shows that MARCO is required to attenuate nuclear factor kappa B (NF-κB) inflammation in 40 μm PTS by regulating the transcription of inhibitory NFKB inhibitor alpha (NFKBIA) and interleukin-1 receptor-associated kinase 3 (IRAK-M), primarily through a MyD88-dependent signaling pathway. Investigation of implant outcome in the absence of MARCO demonstrates an increase in collagen deposition within the scaffold and the development of tissue fibrosis. Overall, these results further our understanding of the molecular mechanisms underlying MARCO and TLR signaling within PTS.
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Affiliation(s)
- Nathan R Chan
- Molecular Engineering and Sciences Graduate Program, University of Washington, Seattle, Washington, USA
- Department of Bioengineering, University of Washington, Seattle, Washington, USA
| | - Billanna Hwang
- Department of Surgery, Center for Lung Biology, University of Washington, Seattle, Washington, USA
- Department of Surgery, University of Washington, Seattle, Washington, USA
| | - Michael S Mulligan
- Department of Surgery, Center for Lung Biology, University of Washington, Seattle, Washington, USA
- Department of Surgery, University of Washington, Seattle, Washington, USA
| | - Buddy D Ratner
- Molecular Engineering and Sciences Graduate Program, University of Washington, Seattle, Washington, USA
- Department of Bioengineering, University of Washington, Seattle, Washington, USA
- Department of Chemical Engineering, University of Washington, Seattle, Washington, USA
| | - James D Bryers
- Molecular Engineering and Sciences Graduate Program, University of Washington, Seattle, Washington, USA
- Department of Bioengineering, University of Washington, Seattle, Washington, USA
- Department of Chemical Engineering, University of Washington, Seattle, Washington, USA
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Liu Y, Chen H, Yan X, Zhang J, Deng Z, Huang M, Gu J, Zhang J. MyD88 in myofibroblasts enhances nonalcoholic fatty liver disease-related hepatocarcinogenesis via promoting macrophage M2 polarization. Cell Commun Signal 2024; 22:86. [PMID: 38291436 PMCID: PMC10826060 DOI: 10.1186/s12964-024-01489-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/11/2024] [Indexed: 02/01/2024] Open
Abstract
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is a major cause of chronic liver diseases and has emerged as the leading factor in the pathogenesis of hepatocellular carcinoma (HCC). MyD88 contributes to the development of HCC. However, the underlying mechanism by which MyD88 in myofibroblasts regulates NAFLD-associated liver cancer development remains unknown. RESULTS Myofibroblast MyD88-deficient (SMAMyD88-/-) mice were protected from diet-induced obesity and developed fewer and smaller liver tumors. MyD88 deficiency in myofibroblasts attenuated macrophage M2 polarization and fat accumulation in HCC tissues. Mechanistically, MyD88 signaling in myofibroblasts enhanced CCL9 secretion, thereby promoting macrophage M2 polarization. This process may depend on the CCR1 receptor and STAT6/ PPARβ pathway. Furthermore, liver tumor growth was attenuated in mice treated with a CCR1 inhibitor. CCLl5 (homologous protein CCL9 in humans) expression was increased in myofibroblasts of HCC and was associated with shorter survival of patients with HCC. Thus, our results indicate that MyD88 in myofibroblasts promotes NAFLD-related HCC progression and may be a promising therapeutic target for HCC treatment. CONCLUSION This study demonstrates that MyD88 in myofibroblasts can promote nonalcoholic fatty liver disease-related hepatocarcinogenesis by enhancing macrophage M2 polarization, which might provide a potential molecular therapeutic target for HCC.
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Affiliation(s)
- Yu Liu
- College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, 100044, P.R. China
| | - Haiqiang Chen
- College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, 100044, P.R. China
| | - Xuanxuan Yan
- College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, 100044, P.R. China
| | - Jie Zhang
- College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, 100044, P.R. China
| | - Zhenzhong Deng
- Department of Oncology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, P. R. China
| | - Maosheng Huang
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jianchun Gu
- Department of Oncology, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, 1665 Kongjiang Road, Shanghai, 200092, P. R. China.
| | - Jinhua Zhang
- College of Life Science and Bioengineering, Beijing Jiaotong University, No.3 Shangyuancun Road, Beijing, 100044, P.R. China.
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Wei X, Yi X, Liu J, Sui X, Li L, Li M, Lv H, Yi H. Circ-phkb promotes cell apoptosis and inflammation in LPS-induced alveolar macrophages via the TLR4/ MyD88/NF-kB/CCL2 axis. Respir Res 2024; 25:62. [PMID: 38287405 PMCID: PMC10826187 DOI: 10.1186/s12931-024-02677-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Accepted: 01/03/2024] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Circular RNAs (CircRNAs) have been associated with acute lung injury (ALI), but their molecular mechanisms remain unclear. METHODS This study developed a rat model of lipopolysaccharide (LPS)-induced ALI and evaluated the modeling effect by hematoxylin and eosin staining, Masson's trichrome staining, lung wet-to-dry weight ratio, terminal deoxynucleotidyl transferase UTP nick end labeling (TUNEL), and enzyme-linked immunosorbent assay (ELISA) detection of inflammatory factors (interleukin-1β, tumor necrosis factor alpha, and interleukin-6). Using lung tissues from a rat model of LPS-induced ALI, we then conducted circRNA sequencing, mRNA sequencing, and bioinformatics analysis to obtain differential circRNA and mRNA expression profiles as well as potential ceRNA networks. Furthermore, we performed quantitative real-time polymerase chain reaction (qRT-PCR) assays to screen for circ-Phkb in ALI rat lung tissues, alveolar macrophages, and LPS-induced NR8383 cells. We conducted induction with or without LPS with circ-Phkb siRNA and overexpression lentivirus in NR8383. Cell Counting Kit-8, C5-Ethynyl-2'-deoxyuridine (Edu), TUNEL, and cytometry were used to identify proliferation and apoptosis, respectively. We detected inflammatory factors using ELISA. Finally, we used Western blot to detect the apoptosis-related proteins and TLR4/MyD88/NF-kB/CCL2 pathway activation. RESULTS Our results revealed that both circRNA and mRNA profiles are different from those of the Sham group. We observed a significant circ-Phkb upregulation in NR8383 cells and LPS-exposed rats. Apoptosis and inflammation were greatly reduced when circ-Phkb expression was reduced in NR8383 cells, cell proliferation was increased, and circ-Phkb overexpression was decreased. CONCLUSIONS In terms of mechanism, circ-Phkb suppression inhibits CCL2 expression via the TLR4/MyD88/NF-kB pathway in LPS-induced alveolar macrophages.
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Affiliation(s)
- Xuxia Wei
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China
| | - Xiaomeng Yi
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China
| | - Jianrong Liu
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China
| | - Xin Sui
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China
| | - Lijuan Li
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China
| | - Mei Li
- VIP Healthcare Center, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China.
| | - Haijin Lv
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China.
| | - Huimin Yi
- Surgical Intensive Care Unit, The Third Affiliated Hospital of Sun Yat-Sen University, No. 600, Tianhe Road, Tianhe District, Guangzhou, Guangdong, 510630, China.
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Borborema MEA, da Silva Santos AF, de Lucena TMC, Crovella S, da Silva Rabello MC, de Azevêdo Silva J. Pathogen recognition pathway gene variants and inflammasome sensors gene expression in tuberculosis patients under treatment. Mol Biol Rep 2024; 51:161. [PMID: 38252221 DOI: 10.1007/s11033-023-09155-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 12/12/2023] [Indexed: 01/23/2024]
Abstract
BACKGROUND Several epidemiological studies have suggested that genetic variations in encoding pattern recognition receptors (PRRs) genes such as Toll Like Receptors (TLRs) and their signaling products, may influence the susceptibility, severity and outcome of tuberculosis (TB). After sensing a pathogen, the cell responds producing an inflammatory response, to restrain the pathogen's successful course of infection. Herein we assessed single nucleotide polymorphisms (SNP) and gene expression from pathogen recognition and inflammasome pathways in Brazilian TB patients. METHODS AND RESULTS For genetic association analysis we included MYD88 and TLR4, PRRs sensing proteins. Allele distribution for MYD88 rs6853 (A > G) and TLR4 rs7873784 (C > G) presented conserved among the tested samples with statistically differential distribution in TB patients versus controls. However, when testing according to sample ethnicity (African or Caucasian-derived individuals) we identified that the rs6853 G/G genotype was associated with a lower susceptibility to TB in Caucasian population. Meanwhile, the rs7873784 G/G genotype was associated with a higher TB susceptibility in Afro-descendant ethnicity individuals. We also aimed to verify MYD88 and the inflammasome genes NLRP1 and NLRC4 expression in order to connect to active TB and/or clinical aspects. CONCLUSIONS We identified that inflammasome gene expression in TB patients under treatment display a similar pattern as in healthy controls, indicating that TB treatment impairs NLRP1 inflammasome activation.
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Affiliation(s)
- Maria Eduarda Albuquerque Borborema
- Laboratory of Human Genetics and Molecular Biology, Department of Genetics, Center for Biosciences, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901 - CEP, Brazil
- Keizo Asami Institute, Federal University of Pernambuco, Recife, PE, 50740-465 - CEP, Brazil
| | - Ariane Fernandes da Silva Santos
- Laboratory of Human Genetics and Molecular Biology, Department of Genetics, Center for Biosciences, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901 - CEP, Brazil
- Keizo Asami Institute, Federal University of Pernambuco, Recife, PE, 50740-465 - CEP, Brazil
| | - Thays Maria Costa de Lucena
- Laboratory of Human Genetics and Molecular Biology, Department of Genetics, Center for Biosciences, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901 - CEP, Brazil
- Keizo Asami Institute, Federal University of Pernambuco, Recife, PE, 50740-465 - CEP, Brazil
| | - Sergio Crovella
- Keizo Asami Institute, Federal University of Pernambuco, Recife, PE, 50740-465 - CEP, Brazil
| | | | - Jaqueline de Azevêdo Silva
- Laboratory of Human Genetics and Molecular Biology, Department of Genetics, Center for Biosciences, Federal University of Pernambuco, Av. Prof. Moraes Rego, 1235, Recife, PE, 50670-901 - CEP, Brazil.
- Keizo Asami Institute, Federal University of Pernambuco, Recife, PE, 50740-465 - CEP, Brazil.
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6
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Gray JM, Major K, Castillo-Ruiz A, Shipley M, Gangappa S, Forger NG. The inflammatory response to birth requires MyD88 and is driven by both mother and offspring. Brain Behav Immun 2024; 115:617-630. [PMID: 37967662 DOI: 10.1016/j.bbi.2023.11.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/15/2023] [Accepted: 11/11/2023] [Indexed: 11/17/2023] Open
Abstract
Birth is an inflammatory event for the newborn, characterized by elevations in interleukin (IL)-6, IL-10, and tumor necrosis factor (TNF)-α peripherally and/or centrally, as well as changes in brain microglia. However, the mechanism(s) underlying these responses is unknown. Toll-like receptors (TLRs) play crucial roles in innate immunity and initiate inflammatory cascades upon recognition of endogenous or exogenous antigens. Most TLR signaling depends on the adaptor molecule myeloid differentiation primary response 88 (MyD88). We independently varied MyD88 gene status in mouse dams and their offspring to determine whether the inflammatory response to birth depends on MyD88 signaling and, if so, whether that signaling occurs in the offspring, the mother, or both. We find that the perinatal surges in plasma IL-6 and brain expression of TNF-α depend solely on MyD88 gene status of the offspring, whereas postnatal increases in plasma IL-10 and TNF-α depend on MyD88 in both the pup and dam. Interestingly, MyD88 genotype of the dam primarily drives differences in offspring brain microglial density and has robust effects on developmental neuronal cell death. Milk cytokines were evaluated as a possible source of postnatal maternal influence; although we found high levels of CXCL1/GROα and several other cytokines in ingested post-partum milk, their presence did not require MyD88. Thus, the inflammatory response previously described in the late-term fetus and newborn depends on MyD88 (and, by extension, TLRs), with signaling in both the dam and offspring contributing. Unexpectedly, naturally-occuring neuronal cell death in the newborn is modulated primarily by maternal MyD88 gene status.
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Affiliation(s)
- Jennifer M Gray
- Neuroscience Institute, Georgia State University, Atlanta, GA 30303, USA
| | - Kharli Major
- Neuroscience Institute, Georgia State University, Atlanta, GA 30303, USA
| | | | - Michael Shipley
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA
| | - Shivaprakash Gangappa
- Influenza Division, Centers for Disease Control and Prevention, Atlanta, GA 30329, USA
| | - Nancy G Forger
- Neuroscience Institute, Georgia State University, Atlanta, GA 30303, USA.
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Liu B, Fan L, Wang Y, Wang H, Yan Y, Chen S, Hung I, Liu C, Wei H, Ge L, Ren W. Gut microbiota regulates host melatonin production through epithelial cell MyD88. Gut Microbes 2024; 16:2313769. [PMID: 38353638 PMCID: PMC10868534 DOI: 10.1080/19490976.2024.2313769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Accepted: 01/30/2024] [Indexed: 02/16/2024] Open
Abstract
Melatonin has various physiological effects, such as the maintenance of circadian rhythms, anti-inflammatory functions, and regulation of intestinal barriers. The regulatory functions of melatonin in gut microbiota remodeling have also been well clarified; however, the role of gut microbiota in regulating host melatonin production remains poorly understood. To address this, we studied the contribution of gut microbiota to host melatonin production using gut microbiota-perturbed models. We demonstrated that antibiotic-treated and germ-free mice possessed diminished melatonin levels in the serum and elevated melatonin levels in the colon. The influence of the intestinal microbiota on host melatonin production was further confirmed by fecal microbiota transplantation. Notably, Lactobacillus reuteri (L. R) and Escherichia coli (E. coli) recapitulated the effects of gut microbiota on host melatonin production. Mechanistically, L. R and E. coli activated the TLR2/4/MyD88/NF-κB signaling pathway to promote expression of arylalkylamine N-acetyltransferase (AANAT, a rate-limiting enzyme for melatonin production), and MyD88 deficiency in colonic epithelial cells abolished the influence of intestinal microbiota on colonic melatonin production. Collectively, we revealed a specific underlying mechanism of gut microbiota to modulate host melatonin production, which might provide novel therapeutic ideas for melatonin-related diseases.
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Affiliation(s)
- Bingnan Liu
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Center of Technology Innovation for Pigs, Chongqing, China
| | - Lijuan Fan
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Center of Technology Innovation for Pigs, Chongqing, China
| | - Youxia Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Center of Technology Innovation for Pigs, Chongqing, China
| | - Hao Wang
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Center of Technology Innovation for Pigs, Chongqing, China
| | - Yuqi Yan
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Shuai Chen
- Key Laboratory of Systems Health Science of Zhejiang Province, School of Life Science, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, China
| | - Ifen Hung
- Anyou Biotechnology Group Co. LTD, Taicang, China
- Joint Laboratory of Functional Nutrition and Animal Health, Centree Bio-tech (Wuhan) Co., LTD, Wuhan, China
| | - Chunxue Liu
- Anyou Biotechnology Group Co. LTD, Taicang, China
| | - Hong Wei
- State Key Laboratory of Agricultural Microbiology, College of Animal Sciences and Technology, Key Laboratory of Agricultural Animal Genetics, Breeding, and Reproduction of the Ministry of Education & Key Laboratory of Swine Genetics and Breeding of Ministry of Agriculture and Rural Affairs, Huazhong Agricultural University, Wuhan, China
| | - Liangpeng Ge
- National Center of Technology Innovation for Pigs, Chongqing, China
- Chongqing Academy of Animal Sciences, Key Laboratory of Pig Industry Science, Ministry of Agriculture, Chongqing, China
| | - Wenkai Ren
- State Key Laboratory of Swine and Poultry Breeding Industry, College of Animal Science, South China Agricultural University, Guangzhou, China
- National Center of Technology Innovation for Pigs, Chongqing, China
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Johnson AN, Dickinson J, Nelson A, Gaurav R, Kudrna K, Evans SE, Janike K, Wyatt TA, Poole JA. Effect of epithelial-specific MyD88 signaling pathway on airway inflammatory response to organic dust exposure. J Immunotoxicol 2023; 20:2148782. [PMID: 36538286 PMCID: PMC9912912 DOI: 10.1080/1547691x.2022.2148782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 11/11/2022] [Indexed: 12/24/2022] Open
Abstract
The Toll-like receptor (TLR) adaptor protein MyD88 is integral to airway inflammatory response to microbial-enriched organic dust extract (ODE) exposures. ODE-induced airway neutrophil influx and release of pro-inflammatory cytokines was essentially abrogated in global MyD88-deficient mice, yet these mice demonstrate an increase in airway epithelial cell mucin expression. To further elucidate the role of MyD88-dependent responses specific to lung airway epithelial cells in response to ODE in vivo, the surfactant protein C protein (SPC) Cre+ embryologic expressing airway epithelial cells floxed for MyD88 to disrupt MyD88 signaling were utilized. The inducible club cell secretory protein (CCSP) Cre+, MyD88 floxed, were also developed. Using an established protocol, mice were intranasally instilled with ODE or saline once or daily up to 3 weeks. Mice with MyD88-deficient SPC+ lung epithelial cells exhibited decreased neutrophil influx following ODE exposure once and repetitively for 1 week without modulation of classic pro-inflammatory mediators including tumor necrosis factor (TNF)-α, interleukin (IL)-6, and neutrophil chemoattractants. This protective response was lost after 3 weeks of repetitive exposure. ODE-induced Muc5ac mucin expression at 1 week was also reduced in MyD88-deficient SPC+ cells. Acute ODE-induced IL-33 was reduced in MyD88-deficient SPC+ cells whereas serum IgE levels were increased at one week. In contrast, mice with inducible MyD88-deficient CCSP+ airway epithelial cells demonstrated no significant difference in experimental indices following ODE exposure. Collectively, these findings suggest that MyD88-dependent signaling targeted to all airway epithelial cells plays an important role in mediating neutrophil influx and mucin production in response to acute organic dust exposures.
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Affiliation(s)
- Amber N. Johnson
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
| | - John Dickinson
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Amy Nelson
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Rohit Gaurav
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Katrina Kudrna
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Scott E. Evans
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Katherine Janike
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
| | - Todd A. Wyatt
- Pulmonary Critical Care and Sleep Division University of Nebraska Medical Center (UNMC), Omaha, NE
- VA Nebraska Western Iowa Health Care System, Omaha, NE
- Department of Environmental, Agricultural and Occupational Health, UNMC, Omaha, NE
| | - Jill A. Poole
- Allergy and Immunology Division, Department of Internal Medicine, University of Nebraska Medical Center (UNMC), Omaha, NE
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Fan H, Wang Y, Zhao K, Su L, Deng C, Huang J, Chen G. Incomplete Knockdown of MyD88 Inhibits LPS-Induced Lung Injury and Lung Fibrosis in a Mouse Model. Inflammation 2023; 46:2276-2288. [PMID: 37606850 DOI: 10.1007/s10753-023-01877-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 05/12/2023] [Accepted: 07/13/2023] [Indexed: 08/23/2023]
Abstract
Acute lung injury (ALI) is a life-threatening disorder stemmed mainly from an uncontrolled inflammatory response. Lipopolysaccharide (LPS) is commonly used to induce ALI animal models. Toll-like receptor 4 (TLR4) is the main receptor for LPS, and myeloid differentiation factor 88 (MyD88) is a key adaptor protein molecule in the Toll-like receptor (TLR) signaling pathway. Thus, MyD88 knockdown heterozygous mice (MyD88+/-) were used to investigate the effect of incomplete knockout of the MyD88 gene on indirect LPS-induced ALI through intraperitoneal injection of LPS. The LPS-induced ALI significantly upregulated MyD88 expression, and heterozygous mice with incomplete knockout of the MyD88 gene (MyD88+/-) ameliorated LPS-induced histopathological injury and collagen fiber deposition. Heterozygous mice with incomplete knockout of the MyD88 gene (MyD88+/-) inhibited LPS-induced nuclear factor-κB (NF-κB) pathway activation, but TLR-4 expression tended to be upregulated. Incomplete knockdown of the MyD88 gene also downregulated LPS-induced expression of IL1-β, IL-6, TNF-α, TGF-β, SMAD2, and α-SMA. The transcriptome sequencing also revealed significant changes in LPS-regulated genes (such as IL-17 signaling pathway genes) after the incomplete knockdown of MyD88. In conclusion, this paper clarified that LPS activates the downstream NF-κB pathway depending on the MyD88 signaling pathway, which induces the secretion of inflammatory cytokines such as IL-1β/IL-6/TNF-α and ultimately triggers ALI. Incomplete knockdown of the MyD88 reverses LPS-induced lung fibrosis, which confirmed the vital role of MyD88 in LPS-induced ALI.
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Affiliation(s)
- Hui Fan
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Yanni Wang
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Kaochang Zhao
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Li Su
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Chong Deng
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China
| | - Jie Huang
- Research Center for Stem Cell Engineering and Technology, Institute of Industrial Technology, Chongqing University, Chongqing, China
- Better Biotechnology LLC, Chongqing, China
| | - Guozhong Chen
- Department of Respiratory and Critical Care Medicine, Renmin Hospital of Wuhan University, Wuhan, 430060, China.
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Hasan MM, Madhavan P, Ahmad Noruddin NA, Lau WK, Ahmed QU, Arya A, Zakaria ZA. Cardioprotective effects of arjunolic acid in LPS-stimulated H9C2 and C2C12 myotubes via the My88-dependent TLR4 signaling pathway. Pharm Biol 2023; 61:1135-1151. [PMID: 37497554 PMCID: PMC10375937 DOI: 10.1080/13880209.2023.2230251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 05/21/2023] [Accepted: 06/22/2023] [Indexed: 07/28/2023]
Abstract
CONTEXT Arjunolic acid (AA) is a triterpenoid saponin found in Terminalia arjuna (Roxb.) Wight & Arn. (Combretaceae). It exerts cardiovascular protective effects as a phytomedicine. However, it is unclear how AA exerts the effects at the molecular level. OBJECTIVE This study investigates the cardioprotective effects of arjunolic acid (AA) via MyD88-dependant TLR4 downstream signaling marker expression. MATERIALS AND METHODS The MTT viability assay was used to assess the cytotoxicity of AA. LPS induced in vitro cardiovascular disease model was developed in H9C2 and C2C12 myotubes. The treatment groups were designed such as control (untreated), LPS control, positive control (LPS + pyrrolidine dithiocarbamate (PDTC)-25 µM), and treatment groups were co-treated with LPS and three concentrations of AA (50, 75, and 100 µM) for 24 h. The changes in the expression of TLR4 downstream signaling markers were evaluated through High Content Screening (HCS) and Western Blot (WB) analysis. RESULTS After 24 h of co-treatment, the expression of TLR4, MyD88, MAPK, JNK, and NF-κB markers were upregulated significantly (2-6 times) in the LPS-treated groups compared to the untreated control in both HCS and WB experiments. Evidently, the HCS analysis revealed that MyD88, NF-κB, p38, and JNK were significantly downregulated in the H9C2 myotube in the AA treated groups. In HCS, the expression of NF-κB was downregulated in C2C12. Additionally, TLR4 expression was downregulated in both H9C2 and C2C12 myotubes in the WB experiment. DISCUSSION AND CONCLUSIONS TLR4 marker expression in H9C2 and C2C12 myotubes was subsequently decreased by AA treatment, suggesting possible cardioprotective effects of AA.
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Affiliation(s)
- Md Mahmudul Hasan
- School of Biosciences, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Priya Madhavan
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
| | - Nur Adelina Ahmad Noruddin
- National Institutes of Biotechnology Malaysia, Malaysian Institute of Pharmaceuticals and Nutraceuticals, Serdang, Malaysia
| | - Wai Kwan Lau
- National Institutes of Biotechnology Malaysia, Malaysian Institute of Pharmaceuticals and Nutraceuticals, Serdang, Malaysia
| | - Qamar Uddin Ahmed
- Drug Discovery and Synthetic Chemistry Research Group, Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, Kuantan, Malaysia
| | - Aditya Arya
- School of Medicine, Faculty of Health and Medical Sciences, Taylor's University, Subang Jaya, Malaysia
- National Institutes of Biotechnology Malaysia, Malaysian Institute of Pharmaceuticals and Nutraceuticals, Serdang, Malaysia
- School of Biosciences, Faculty of Science, The University of Melbourne, Melbourne, Australia
| | - Zainul Amiruddin Zakaria
- Borneo Research for Algesia, Inflammation and Neurodegeneration (BRAIN) Group, Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, Universiti Malaysia Sabah, Jalan UMS, Kota Kinabalu, Malaysia
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11
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Ren JP, Cong HL, Gao LJ, Jiang DF, Li XT, Wang Y, Wang JQ, Tang TS. Cyclin-dependent kinase 5 negatively regulates antiviral immune response by disrupting myeloid differentiation primary response protein 88 self-association. Virulence 2023; 14:2223394. [PMID: 37332205 DOI: 10.1080/21505594.2023.2223394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2023] Open
Abstract
As a member of the pattern recognition receptors (PRRs) involving in the innate immune system, Toll-like receptors (TLRs) can sense a wide range of microbial pathogens and combat infections by producing antimicrobial products, inflammatory cytokines, and chemokines. All TLRs, with the exception of TLR3, activate a signalling cascade via the myeloid differentiation primary response gene 88 (MyD88). Therefore, the activation of MyD88-dependent signalling pathway must be finely controlled. Herein, we identified that cyclin-dependent kinase 5 (CDK5) negatively regulated TLR-MyD88 signalling pathway by targeting MyD88. Overexpression of CDK5 reduced the production of interferons (IFNs), while a deficiency in CDK5 increased the expression of IFNs in response to vesicular stomatitis virus (VSV) infection. Mechanistically, CDK5 suppressed the formation of MyD88 homodimers, resulting in the attenuated production of IFNs induced by VSV infection. Surprisingly, its kinase activity does not play a role in this process. Therefore, CDK5 can act as an internal regulator to prevent excessive production of IFNs by restricting TLR-MyD88-induced activation of antiviral innate immunity in A549 cells.
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Affiliation(s)
- Jian-Ping Ren
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Hao-Long Cong
- Chinese Academy of Inspection and Quarantine, Beijing, China
| | - Li-Jie Gao
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Dong-Fang Jiang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Xin-Tong Li
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Yun Wang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
| | - Jiu-Qiang Wang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Peninsular Cancer Center, Binzhou Medical University, Yantai, China
| | - Tie-Shan Tang
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, China
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12
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Saadh MJ, Rashed AB, Jamal A, Castillo-Acobo RY, Kamal MA, Cotrina-Aliaga JC, Gonzáles JLA, Alothaim AS, Alhoqail WA, Ahmad F, Lakshmaiya N, Amin AH, Younus DG, Rojas GGR, Bahrami A, Akhavan-Sigari R. miR-199a-3p suppresses neuroinflammation by directly targeting MyD88 in a mouse model of bone cancer pain. Life Sci 2023; 333:122139. [PMID: 37783266 DOI: 10.1016/j.lfs.2023.122139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
AIMS Pain is a profoundly debilitating symptom in cancer patients, leading to disability, immobility, and a marked decline in their quality of life. This study aimed to investigate the potential roles of miR-199a-3p in a murine model of bone cancer pain induced by tumor cell implantation in the medullary cavity of the femur. MATERIALS AND METHODS We assessed pain-related behaviors, including the paw withdrawal mechanical threshold (PWMT) and the number of spontaneous flinches (NSF). To investigate miRNA expression and its targets in astrocytes, we employed a combination of RNA-seq analysis, qRT-PCR, Western blotting, EdU, TUNEL, ChIP, ELISA, and luciferase reporter assays in mice (C3H/HeJ) with bone cancer pain and control groups. KEY FINDINGS On days 10, 14, 21, and 28 post-surgery, we observed significant differences in PWTL, PWMT, and NSF when compared to the sham group (P < 0.001). qRT-PCR assays and miRNA sequencing results confirmed reduced miR-199a-3p expression in astrocytes of mice with bone cancer pain. Gain- and loss-of-function experiments demonstrated that miR-199a-3p suppressed astrocyte activation and the expression of inflammatory cytokines. In vitro investigations revealed that miR-199a-3p mimics reduced the levels of inflammatory factors in astrocytes and MyD88/NF-κB proteins. Furthermore, treatment with a miR-199a-3p agonist resulted in reduced expression of MyD88, TAK1, p-p65, and inflammatory mediators, along with decreased astrocyte activation in the spinal cord. SIGNIFICANCE Collectively, these findings demonstrate that upregulation of miR-199a-3p may offer a therapeutic avenue for mitigating bone cancer pain in mice by suppressing neuroinflammation and inhibiting the MyD88/NF-κB signaling pathway.
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Affiliation(s)
- Mohamed J Saadh
- Faculty of Pharmacy, Middle East University, Amman 11831, Jordan
| | - Amera Bekhatroh Rashed
- Nursing Department, College of Applied Medical Sciences, Jouf University, Sakaka, Saudi Arabia
| | - Azfar Jamal
- Health and Basic Science Research Centre, Majmaah University, Majmaah 11952, Saudi Arabia; Department of Biology, College of Science, Al-Zulfi-, Majmaah University, Majmaah 11952, Riyadh Region, Saudi Arabia
| | | | - Mohammad Azhar Kamal
- Department of Pharmaceutics, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj 11942, Saudi Arabia
| | | | - José Luis Arias Gonzáles
- Department of Social Sciences, Faculty of Social Studies, University of British Columbia, BC, Canada
| | - Abdulaziz S Alothaim
- Department of Biology, College of Science, Al-Zulfi-, Majmaah University, Majmaah 11952, Riyadh Region, Saudi Arabia
| | - Wardah A Alhoqail
- Department of Biology, College of Education, Majmaah University, Al-Majmaah 11952, Saudi Arabia
| | - Fuzail Ahmad
- College of Applied Sciences, Almaarefa University, Diriya, Riyadh 13713, Saudi Arabia
| | - Natrayan Lakshmaiya
- Department of Mechanical Engineering, Saveetha School of Engineering, SIMATS, Chennai, Tamil Nadu, India
| | - Ali H Amin
- Zoology Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt
| | | | | | - Abolfazl Bahrami
- Biomedical Center for Systems Biology Science Munich, Ludwig-Maximilians-University, Germany.
| | - Reza Akhavan-Sigari
- Department of Neurosurgery, University Medical Center Tuebingen, Germany; Department of Health Care Management and Clinical Research, Collegium Humanum Warsaw Management University Warsaw, Poland
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Teymournejad O, Sharma AK, Abdelwahed M, Kader M, Ahmed I, Elkafas H, Ismail N. Hepatocyte-specific regulation of autophagy and inflammasome activation via MyD88 during lethal Ehrlichia infection. Front Immunol 2023; 14:1212167. [PMID: 38022511 PMCID: PMC10662044 DOI: 10.3389/fimmu.2023.1212167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
Hepatocytes play a crucial role in host response to infection. Ehrlichia is an obligate intracellular bacterium that causes potentially life-threatening human monocytic ehrlichiosis (HME) characterized by an initial liver injury followed by sepsis and multi-organ failure. We previously showed that infection with highly virulent Ehrlichia japonica (E. japonica) induces liver damage and fatal ehrlichiosis in mice via deleterious MyD88-dependent activation of CASP11 and inhibition of autophagy in macrophage. While macrophages are major target cells for Ehrlichia, the role of hepatocytes (HCs) in ehrlichiosis remains unclear. We investigated here the role of MyD88 signaling in HCs during infection with E. japonica using primary cells from wild-type (WT) and MyD88-/- mice, along with pharmacologic inhibitors of MyD88 in a murine HC cell line. Similar to macrophages, MyD88 signaling in infected HCs led to deleterious CASP11 activation, cleavage of Gasdermin D, secretion of high mobility group box 1, IL-6 production, and inflammatory cell death, while controlling bacterial replication. Unlike macrophages, MyD88 signaling in Ehrlichia-infected HCs attenuated CASP1 activation but activated CASP3. Mechanistically, active CASP1/canonical inflammasome pathway negatively regulated the activation of CASP3 in infected MyD88-/- HCs. Further, MyD88 promoted autophagy induction in HCs, which was surprisingly associated with the activation of the mammalian target of rapamycin complex 1 (mTORC1), a known negative regulator of autophagy. Pharmacologic blocking mTORC1 activation in E. japonica-infected WT, but not infected MyD88-/- HCs, resulted in significant induction of autophagy, suggesting that MyD88 promotes autophagy during Ehrlichia infection not only in an mTORC1-indpenedent manner, but also abrogates mTORC1-mediated inhibition of autophagy in HCs. In conclusion, this study demonstrates that hepatocyte-specific regulation of autophagy and inflammasome pathway via MyD88 is distinct than MyD88 signaling in macrophages during fatal ehrlichiosis. Understanding hepatocyte-specific signaling is critical for the development of new therapeutics against liver-targeting pathogens such as Ehrlichia.
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Affiliation(s)
- Omid Teymournejad
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Aditya Kumar Sharma
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Mohammed Abdelwahed
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
- Hofstra School of Medicine, North Well Health, New York, NY, United States
| | - Muhamuda Kader
- Department of Pathology, School of Medicine, University of Pittsburgh, Pittsburgh, PA, United States
| | - Ibrahim Ahmed
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Hoda Elkafas
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
| | - Nahed Ismail
- Department of Pathology, College of Medicine, University of Illinois at Chicago, Chicago, IL, United States
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14
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Zhang Q, Zhu W, Lou S, Bao H, Zhou Y, Cai Z, Ye J, Cui Y, Wang M, Jin L, Liang G, Luo W, Wang Y. Compound c17 alleviates inflammatory cardiomyopathy in streptozotocin-induced diabetic mice by targeting MyD88. Int Immunopharmacol 2023; 124:110863. [PMID: 37703787 DOI: 10.1016/j.intimp.2023.110863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2023] [Revised: 08/19/2023] [Accepted: 08/24/2023] [Indexed: 09/15/2023]
Abstract
BACKGROUND Diabetic cardiomyopathy (DCM) is a common complication of diabetes mellitus and is associated with increased morbidity and mortality due to cardiac dysfunction. Chronic inflammation plays a significant role in the development of DCM, making it a promising target for novel pharmacological strategies. Our previous study has synthesized a novel compound, c17, which exhibited strong anti-inflammatory activity by specifically targeting to myeloid differentiation primary response 88 (MyD88). In this study, we evaluated the therapeutic effect of c17 in DCM. METHODS The small molecular selective MyD88 inhibitor, c17, was used to evaluate the effect of MyD88 on DCM in both high concentration of glucose- and palmitic acid-stimulated macrophages and streptozotocin (STZ)-induced type 1 diabetes mellitus (T1DM) mice. RESULTS The treatment of c17 in T1DM mice resulted in improved heart function and reduced cardiac hypertrophy, inflammation and fibrogenesis. RNA sequencing analysis of the heart tissues revealed that c17 effectively suppressed the inflammatory response by regulating the MyD88-dependent pathway. Co-immunoprecipitation experiments further confirmed that c17 disrupted the interaction between MyD88 and Toll-like receptor 4 (TLR4), consequently inhibiting downstream NF-κB activation. In vitro studies demonstrated that c17 exhibited similar anti-inflammatory activity by targeting MyD88 in macrophages, which are the primary regulators of cardiac inflammation. Furthermore, conditioned medium derived from c17-treated macrophages showed reduced capacity to induce hypertrophy, pro-fibrotic reactions, and secondary inflammation in cardiomyocytes. CONCLUSIONS In conclusion, the small-molecule MyD88 inhibitor, c17, effectively combated the inflammatory DCM, therefore could be a potential candidate for the treatment of this disease.
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Affiliation(s)
- Qianhui Zhang
- Joint Research Center on Medicine, the Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, Zhejiang, China; Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Weiwei Zhu
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China; Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Shuaijie Lou
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Hongdan Bao
- Joint Research Center on Medicine, the Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, Zhejiang, China
| | - Yafen Zhou
- Joint Research Center on Medicine, the Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, Zhejiang, China
| | - Zhaohong Cai
- Joint Research Center on Medicine, the Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, Zhejiang, China
| | - Jiaxi Ye
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Yaqian Cui
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Minxiu Wang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Leiming Jin
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China
| | - Guang Liang
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China; School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou 311399, Zhejiang, China
| | - Wu Luo
- Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China; Medical Research Center, the First Affiliated Hospital, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China.
| | - Yi Wang
- Joint Research Center on Medicine, the Affiliated Xiangshan Hospital of Wenzhou Medical University, Ningbo 315700, Zhejiang, China; Chemical Biology Research Center, School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou 325035, Zhejiang, China; School of Pharmacy, Hangzhou Normal University, Hangzhou 311399, Zhejiang, China.
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15
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Hao Z, Lu Q, Zhou Y, Liang Y, Gao Y, Ma H, Xu Y, Wang H. Molecular characterization of MyD88 as a potential biomarker for pesticide-induced stress in Bombyx mori. Pestic Biochem Physiol 2023; 196:105610. [PMID: 37945249 DOI: 10.1016/j.pestbp.2023.105610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 08/21/2023] [Accepted: 09/01/2023] [Indexed: 11/12/2023]
Abstract
The widespread use of pesticides hampers the immune system of non-target organisms, however, there is a lack of common biomarkers to detect such effects. Myeloid differentiation primary response factor 88 (MyD88) is a crucial junction protein in the Toll-like receptor signaling pathway, which plays an important role in the inflammatory response. In this study, we investigated MyD88 as a potential biomarker for pesticide-induced stress. Phylogenetic analysis revealed that MyD88 was a conserved protein in the evolution of vertebrates and invertebrates. MyD88s usually have death domain (DD) and Toll/interleukin-1 receptor (TIR) domain. Bombyx mori (B. mori) is an important economic insect that is sensitive to toxic substances. We found microbial pesticides enhanced the expression level of MyD88 in B. mori. Transcriptome analysis demonstrated that MyD88 expression level was increased in the fatbody after dinotefuran exposure, a third-generation neonicotinoid pesticide. Moreover, the expression of MyD88 was upregulated in fatbody and midgut by imidacloprid, a first-generation neonicotinoid pesticide. Additionally, insect growth regulator (IGR) pesticides, such as methoprene and fenoxycarb, could induce MyD88 expression in the fatbody of B. mori. These results indicated that MyD88 is a potential biomarker for pesticide-induced stress in B. mori. This study provides novel insights into screening common biomarkers for multiple pesticide stresses and important implications for the development of more sustainable pest management strategies.
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Affiliation(s)
- Zhihua Hao
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Qingyu Lu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yanyan Zhou
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yanting Liang
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yun Gao
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Huanyan Ma
- Agricultural Technology Extension Center of Zhejiang Province, Hangzhou, China
| | - Yusong Xu
- College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Huabing Wang
- College of Animal Sciences, Zhejiang University, Hangzhou, China.
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Kim KW, Lee YS, Choi BR, Yoon D, Lee DY. Anti-Neuroinflammatory Effect of the Ethanolic Extract of Black Ginseng through TLR4- MyD88-Regulated Inhibition of NF-κB and MAPK Signaling Pathways in LPS-Induced BV2 Microglial Cells. Int J Mol Sci 2023; 24:15320. [PMID: 37894998 PMCID: PMC10607189 DOI: 10.3390/ijms242015320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/15/2023] [Accepted: 10/16/2023] [Indexed: 10/29/2023] Open
Abstract
Korean ginseng (Panax ginseng) contains various ginsenosides as active ingredients, and they show diverse biological activities. Black ginseng is manufactured by repeated steaming and drying of white ginseng, which alters the polarity of ginsenosides and improves biological activities. The aim of the present investigation was to examine the anti-neuroinflammatory effects of the ethanolic extract of black ginseng (BGE) in lipopolysaccharide (LPS)-induced BV2 microglial cells. Pre-treatment with BGE inhibited the overproduction of pro-inflammatory mediators including nitric oxide (NO), prostaglandin E2 (PGE2), inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-6 (IL-6), and tumor necrosis factor-α (TNF-α) in LPS-induced BV2 cells. In addition, BGE reduced the activation of nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), p38 mitogen-activated protein kinase (MAPK), and c-jun N-terminal kinase (JNK) MAPK signaling pathways induced by LPS. These anti-neuroinflammatory effects were mediated through the negative regulation of the toll-like receptor 4 (TLR4)/myeloid differentiation primary response 88 (MyD88) signaling pathway. Among the four ginsenosides contained in BGE, ginsenosides Rd and Rg3 inhibited the production of inflammatory mediators. Taken together, this investigation suggests that BGE represents potential anti-neuroinflammatory candidates for the prevention and treatment of neurodegenerative diseases.
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Affiliation(s)
| | | | | | | | - Dae Young Lee
- Department of Herbal Crop Research, National Institute of Horticultural and Herbal Sciences, Rural Development Administration, Eumseong 27709, Republic of Korea; (K.-W.K.); (Y.-S.L.); (B.-R.C.); (D.Y.)
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17
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Feng M, Tan K, Zhang H, Duan X, Li S, Ma H, Zheng H. Effects of high stocking density on growth performance and expression of MyD88, and its temporal expression under the challenge of Vibrio parahaemolyticus in the noble scallop Chlamys nobilis. Fish Shellfish Immunol 2023; 141:109059. [PMID: 37678479 DOI: 10.1016/j.fsi.2023.109059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/31/2023] [Accepted: 09/04/2023] [Indexed: 09/09/2023]
Abstract
High stocking density has been regarded as an adverse factor in bivalve aquaculture. However, its subsequent molecular response to pathogenic bacteria has been little studied. In order to study the question, a novel MyD88 was first cloned using adult noble scallops Chlamys nobilis (CnMyD88), and its tissue distribution was investigated. Then, 1860 juvenile scallops were divided into two groups with two initial densities of high density (200 individuals/layer, HD) and normal density (110 individuals/layer, ND) and in-situ cultured for three months, in which their growth, survival, and the differential expression of CnMyD88 were examined, respectively. Finally, scallops were injected with the Vibrio parahaemolyticus to assess the temporal expression of CnMyD88. As the results show, CnMyD88 cDNA has a full length of 2241 bp and contains an 1107 bp ORF that encodes a 368-derived protein. It was widely expressed in examined tissues with a significantly higher level in hemolymph, intestine, mantle, and gonad than others. Besides, the HD group showed lower growth (0.39 ± 0.05 mm/day) and survival (37.00 ± 8.49%) than the ND group (0.55 ± 0.02 mm/day and 76.82 ± 5.78%). More importantly, the HD group exhibited significantly lower expression levels of CnMyD88 in their examined tissues than the ND group. After V. parahaemolyticus challenging, CnMyD88 had significantly lower expression levels in the scallops from the HD group than that of the scallops from the ND group at 6th, 24th, and 36th. The present results indicated that high stocking density not only made adverse impacts on growth and survival but also may induce immunosuppression in the noble scallop. Therefore, appropriate low stocking density may be worth considering to adopt in scallop aquaculture.
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Affiliation(s)
- Mingfei Feng
- Key Laboratory of Marine Biotechnology of Guangdong Province, Marine Sciences Institute, Shantou University, Shantou, 515063, China; Research Center of Engineering Technology for Subtropical Mariculture of Guangdong Province, Shantou, 515063, China
| | - Karsoon Tan
- Borneo Marine Research Institute, University Malaysia Sabah, Sabah, Malaysia
| | - Hongkuan Zhang
- Key Laboratory of Marine Biotechnology of Guangdong Province, Marine Sciences Institute, Shantou University, Shantou, 515063, China; Research Center of Engineering Technology for Subtropical Mariculture of Guangdong Province, Shantou, 515063, China
| | - Xixi Duan
- Key Laboratory of Marine Biotechnology of Guangdong Province, Marine Sciences Institute, Shantou University, Shantou, 515063, China; Research Center of Engineering Technology for Subtropical Mariculture of Guangdong Province, Shantou, 515063, China
| | - Shengkang Li
- Key Laboratory of Marine Biotechnology of Guangdong Province, Marine Sciences Institute, Shantou University, Shantou, 515063, China; Research Center of Engineering Technology for Subtropical Mariculture of Guangdong Province, Shantou, 515063, China
| | - Hongyu Ma
- Key Laboratory of Marine Biotechnology of Guangdong Province, Marine Sciences Institute, Shantou University, Shantou, 515063, China; Research Center of Engineering Technology for Subtropical Mariculture of Guangdong Province, Shantou, 515063, China
| | - Huaiping Zheng
- Key Laboratory of Marine Biotechnology of Guangdong Province, Marine Sciences Institute, Shantou University, Shantou, 515063, China; Research Center of Engineering Technology for Subtropical Mariculture of Guangdong Province, Shantou, 515063, China.
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18
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Madushani KP, Shanaka KASN, Jung S, Kim MJ, Lee J. Ablation of myd88 alters the immune gene expression and immune cell recruitment during VHSV infection in zebrafish. Fish Shellfish Immunol 2023; 141:109006. [PMID: 37598733 DOI: 10.1016/j.fsi.2023.109006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 08/14/2023] [Accepted: 08/17/2023] [Indexed: 08/22/2023]
Abstract
Myeloid differentiation primary response protein-88 (MYD88) is an essential adaptor molecule in pathogen-related pattern recognition signaling pathways. Toll-like and interleukin receptors recognize numerous signals and are funneled through MyD88 to express genes responsible for the innate and adaptive immune systems. In the present study, the relevance of MyD88 in viral hemorrhagic septicemia virus (VHSV) was investigated by generating myd88-/- zebrafish. The model was challenged with VHSV, and viral propagation was quantified by evaluating clinical symptoms, mortality, and VHSV copy number. The infected fish showed abnormal morphologies, such as subcutaneous hemorrhages, abdominal swelling, and bulging eyes, which were comparatively more intense in myd88-/- fish than in the wild-type. An injury infection experiment conducted in zebrafish larvae indicated a substantial spread of VHSV in the wound site. The number of neutrophils and macrophages recruited to the wounded area were markedly reduced in myd88-/- fish. According to gene expression analysis, VHSV NP gene expression was considerably upregulated in myd88-/- fish. Substantial gene expression and immune cell marker modulation were observed in the mutant model compared to that in the wild-type. These results suggest that the lack of a significant adaptor protein for immune signal transduction results in enhanced VHSV replication.
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Affiliation(s)
- K P Madushani
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea
| | - K A S N Shanaka
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea
| | - Sumi Jung
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea
| | - Myoung-Jin Kim
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea; Nakdonggang National Institute of Biological Resources, Sangju-si, Gyeongsangbuk-do, 37242, Republic of Korea.
| | - Jehee Lee
- Department of Marine Life Sciences & Fish Vaccine Research Center, Jeju National University, Jeju Self-Governing Province, 63243, Republic of Korea; Marine Science Institute, Jeju National University, Jeju Self-Governing Province, 63333, Republic of Korea.
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Chu Q, Yu J, Zhou J. Long noncoding RNA LTCONS4500 promotes antibacterial immune responses via targeting miR-3570-5p in teleost fish Miichthys miiuy. Dev Comp Immunol 2023; 147:104764. [PMID: 37356679 DOI: 10.1016/j.dci.2023.104764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/05/2023] [Accepted: 06/23/2023] [Indexed: 06/27/2023]
Abstract
There is accumulating evidence demonstrated that long noncoding RNAs (lncRNA) act as gene regulators in various biological processes, including innate immunity, in which lncRNAs could play their regulatory roles by interacting with miRNAs. Compared with mammals, there is little attention paid to the mechanism of the lncRNA-miRNA regulatory network in teleost fish. Herein, we found a long noncoding RNAs LTCONS4500 that could function as a positive regulator of the immune response in miiuy croaker (Miichthys miiuy). Specifically, we found that the expression of LTCONS4500 could be upregulated by gram-negative bacteria, such as Vibrio anguillarum and Vibrio harveyi. Upregulated LTCONS4500 could promote the expression of inflammatory cytokines. Further study showed that LTCONS4500 could act as a competing endogenous RNA (ceRNA) to interact with miR-3570-5p to facilitate MyD88 expression and thus enhance antibacterial immune responses. Our data suggests the function and mechanism of lncRNAs in antibacterial immune responses of teleost fish, which will enrich the gene regulatory network of vertebrates.
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Affiliation(s)
- Qing Chu
- School of Agriculture, Ludong University, Yantai, China.
| | - Jingyao Yu
- School of Agriculture, Ludong University, Yantai, China
| | - Jiale Zhou
- School of Agriculture, Ludong University, Yantai, China
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20
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Martínez-Gómez LE, Martinez-Armenta C, Medina-Luna D, Ordoñez-Sánchez ML, Tusie-Luna T, Ortega-Peña S, Herrera-López B, Suarez-Ahedo C, Jimenez-Gutierrez GE, Hidalgo-Bravo A, Vázquez-Cárdenas P, Vidal-Vázquez RP, Ramírez-Hinojosa JP, Martinez Matsumoto PM, Vargas-Alarcón G, Posadas-Sánchez R, Fragoso JM, Martínez-Ruiz FDJ, Zayago-Angeles DM, Mata-Miranda MM, Vázquez-Zapién GJ, Martínez-Cuazitl A, Andrade-Alvarado J, Granados J, Ramos-Tavera L, Camacho-Rea MDC, Segura-Kato Y, Rodríguez-Pérez JM, Coronado-Zarco R, Franco-Cendejas R, López-Jácome LE, Magaña JJ, Vela-Amieva M, Pineda C, Martínez-Nava GA, López-Reyes A. Implication of myddosome complex genetic variants in outcome severity of COVID-19 patients. J Microbiol Immunol Infect 2023; 56:939-950. [PMID: 37365052 PMCID: PMC10273757 DOI: 10.1016/j.jmii.2023.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 03/31/2023] [Accepted: 06/10/2023] [Indexed: 06/28/2023]
Abstract
BACKGROUND/PURPOSE(S) During a viral infection, the immune response is mediated by the toll-like receptors and myeloid differentiation Factor 88 (MyD88) that play an important role sensing infections such as SARS-CoV-2 which has claimed the lives of more than 6.8 million people around the world. METHODS We carried out a cross-sectional with a population of 618 SARS-CoV-2-positive unvaccinated subjects and further classified based on severity: 22% were mild, 34% were severe, 26% were critical, and 18% were deceased. Toll Like Receptor 7 (TLR7) single-nucleotide polymorphisms (rs3853839, rs179008, rs179009, and rs2302267) and MyD88 (rs7744) were genotyped using TaqMan OpenArray. The association of polymorphisms with disease outcomes was performed by logistic regression analysis adjusted by covariates. RESULTS A significant association of rs3853839 and rs7744 of the TLR7 and MyD88 genes, respectively, was found with COVID-19 severity. The G/G genotype of the rs3853839 TLR7 was associated with the critical outcome showing an Odd Ratio = 1.98 (95% IC = 1.04-3.77). The results highlighted an association of the G allele of MyD88 gene with severe, critical and deceased outcomes. Furthermore, in the dominant model (AG + GG vs. AA), we observed an Odd Ratio = 1.70 (95% CI = 1.02-2.86) with severe, Odd Ratio = 1.82 (95% CI = 1.04-3.21) with critical, and Odd Ratio = 2.44 (95% CI = 1.21-4.9) with deceased outcomes. CONCLUSION To our knowledge this work represents an innovative report that highlights the significant association of TLR7 and MyD88 gene polymorphisms with COVID-19 outcomes and the possible implication of the MyD88 variant with D-dimer and IFN-α concentrations.
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Affiliation(s)
- Laura E Martínez-Gómez
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Carlos Martinez-Armenta
- Graduate Program in Experimental Biology, Dirección de Ciencias Biológicas y de la Salud (DCBS), Universidad Autónoma Metropolitana Iztapalapa, Ciudad de México, Mexico.
| | - Daniel Medina-Luna
- Microbiology & Immunology Department, Dalhousie University, Halifax, B3H4R2, Nova Scotia, Canada.
| | - María Luisa Ordoñez-Sánchez
- Unidad de Biología Molecular y Medicina Genómica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico.
| | - Tere Tusie-Luna
- Unidad de Biología Molecular y Medicina Genómica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico; Instituto de Investigaciones Biomédicas Universidad Nacional Autónoma de México, Mexico City, Mexico.
| | - Silvestre Ortega-Peña
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Brígida Herrera-López
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Carlos Suarez-Ahedo
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Guadalupe Elizabeth Jimenez-Gutierrez
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Alberto Hidalgo-Bravo
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Paola Vázquez-Cárdenas
- Centro de Innovación Médica Aplicada, Hospital General Dr. Manuel Gea González, Ciudad de México, Mexico.
| | - Rosa P Vidal-Vázquez
- Centro de Innovación Médica Aplicada, Hospital General Dr. Manuel Gea González, Ciudad de México, Mexico.
| | - Juan P Ramírez-Hinojosa
- Centro de Innovación Médica Aplicada, Hospital General Dr. Manuel Gea González, Ciudad de México, Mexico.
| | | | - Gilberto Vargas-Alarcón
- Departamento de Biología Molecular y Endocrinología, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, Mexico.
| | - Rosalinda Posadas-Sánchez
- Departamento de Biología Molecular y Endocrinología, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, Mexico.
| | - José-Manuel Fragoso
- Departamento de Biología Molecular y Endocrinología, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, Mexico.
| | | | | | - Mónica Maribel Mata-Miranda
- Laboratorio de Biología Celular y Tisular, Laboratorio de Embriología, Escuela Médico Militar, Universidad del Ejército y Fuerza Aérea, Ciudad de México, Mexico.
| | - Gustavo Jesús Vázquez-Zapién
- Laboratorio de Biología Celular y Tisular, Laboratorio de Embriología, Escuela Médico Militar, Universidad del Ejército y Fuerza Aérea, Ciudad de México, Mexico.
| | - Adriana Martínez-Cuazitl
- Laboratorio de Biología Celular y Tisular, Laboratorio de Embriología, Escuela Médico Militar, Universidad del Ejército y Fuerza Aérea, Ciudad de México, Mexico.
| | - Javier Andrade-Alvarado
- Servicio de Cirugía General, Hospital Central Norte Petróleos Mexicanos (PEMEX), Estado de México, Mexico.
| | - Julio Granados
- Departamento de Inmunogenética, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Secretaría de Salud, Mexico City, Mexico.
| | - Luis Ramos-Tavera
- Departamento de Inmunogenética, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Secretaría de Salud, Mexico City, Mexico.
| | - María Del Carmen Camacho-Rea
- Departamento de Nutrición Animal, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Secretaría de Salud, Mexico City, Mexico
| | - Yayoi Segura-Kato
- Unidad de Biología Molecular y Medicina Genómica, Instituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán, Mexico.
| | - José Manuel Rodríguez-Pérez
- Departamento de Biología Molecular y Endocrinología, Instituto Nacional de Cardiología Ignacio Chávez, Ciudad de México, Mexico.
| | - Roberto Coronado-Zarco
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Rafael Franco-Cendejas
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Luis Esau López-Jácome
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Jonathan J Magaña
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Marcela Vela-Amieva
- Laboratorio de Errores Innatos del Metabolismo y Tamiz, Instituto Nacional de Pediatría, Secretaria de Salud, Ciudad de México, Mexico.
| | - Carlos Pineda
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Gabriela Angélica Martínez-Nava
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
| | - Alberto López-Reyes
- Laboratorio de Gerociencias, Dirección General, Medicina de Rehabilitación, Laboratorio de Infectología, Departamento de Reconstrucción Articular, Laboratorio de Medicina Genómica, Laboratorio Facilitador. Instituto Nacional de Rehabilitación Luis Guillermo Ibarra Ibarra, Secretaría de Salud, Ciudad de México, Mexico.
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Ramirez-Perez S, Vekariya R, Gautam S, Reyes-Perez IV, Drissi H, Bhattaram P. MyD88 dimerization inhibitor ST2825 targets the aggressiveness of synovial fibroblasts in rheumatoid arthritis patients. Arthritis Res Ther 2023; 25:180. [PMID: 37749630 PMCID: PMC10519089 DOI: 10.1186/s13075-023-03145-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 08/23/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND Dimerization of the myeloid differentiation primary response 88 protein (MyD88) plays a pivotal role in the exacerbated response to innate immunity-dependent signaling in rheumatoid arthritis (RA). ST2825 is a highly specific inhibitor of MyD88 dimerization, previously shown to inhibit the pro-inflammatory gene expression in peripheral blood mononuclear cells from RA patients (RA PBMC). In this study, we elucidated the effect of disrupting MyD88 dimerization by ST2825 on the pathological properties of synovial fibroblasts from RA patients (RA SFs). METHODS RA SFs were treated with varying concentrations of ST2825 in the presence or absence of bacterial lipopolysaccharides (LPS) to activate innate immunity-dependent TLR signaling. The DNA content of the RA SFs was quantified by imaging cytometry to investigate the effect of ST2825 on different phases of the cell cycle and apoptosis. RNA-seq was used to assess the global response of the RA SF toward ST2825. The invasiveness of RA SFs in Matrigel matrices was measured in organoid cultures. SFs from osteoarthritis (OA SFs) patients and healthy dermal fibroblasts were used as controls. RESULTS ST2825 reduced the proliferation of SFs by arresting the cells in the G0/G1 phase of the cell cycle. In support of this finding, transcriptomic analysis by RNA-seq showed that ST2825 may have induced cell cycle arrest by primarily inhibiting the expression of critical cell cycle regulators Cyclin E2 and members of the E2F family transcription factors. Concurrently, ST2825 also downregulated the genes encoding for pain, inflammation, and joint catabolism mediators while upregulating the genes required for the translocation of nuclear proteins into the mitochondria and members of the mitochondrial respiratory complex 1. Finally, we demonstrated that ST2825 inhibited the invasiveness of RA SFs, by showing decreased migration of LPS-treated RA SFs in spheroid cultures. CONCLUSIONS The pathological properties of the RA SFs, in terms of their aberrant proliferation, increased invasiveness, upregulation of pain and inflammation mediators, and disruption of mitochondrial homeostasis, were attenuated by ST2825 treatment. Taken together with the previously reported anti-inflammatory effects of ST2825 in RA PBMC, this study strongly suggests that targeting MyD88 dimerization could mitigate both systemic and synovial pathologies in a variety of inflammatory arthritic diseases.
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Affiliation(s)
- Sergio Ramirez-Perez
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA.
| | - Rushi Vekariya
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA
| | - Surabhi Gautam
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA
| | - Itzel Viridiana Reyes-Perez
- Department of Molecular Biology and Genomics, University Center for Health Science, University of Guadalajara, 44340, Guadalajara, Jalisco, Mexico
| | - Hicham Drissi
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA
- Atlanta VA Medical Center, Decatur, GA, 30033, USA
| | - Pallavi Bhattaram
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA.
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22
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Díaz-Dinamarca DA, Salazar ML, Escobar DF, Castillo BN, Valdebenito B, Díaz P, Manubens A, Salazar F, Troncoso MF, Lavandero S, Díaz J, Becker MI, Vásquez AE. Surface immunogenic protein from Streptococcus agalactiae and Fissurella latimarginata hemocyanin are TLR4 ligands and activate MyD88- and TRIF dependent signaling pathways. Front Immunol 2023; 14:1186188. [PMID: 37790926 PMCID: PMC10544979 DOI: 10.3389/fimmu.2023.1186188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 08/29/2023] [Indexed: 10/05/2023] Open
Abstract
The development of vaccine adjuvants is of interest for the management of chronic diseases, cancer, and future pandemics. Therefore, the role of Toll-like receptors (TLRs) in the effects of vaccine adjuvants has been investigated. TLR4 ligand-based adjuvants are the most frequently used adjuvants for human vaccines. Among TLR family members, TLR4 has unique dual signaling capabilities due to the recruitment of two adapter proteins, myeloid differentiation marker 88 (MyD88) and interferon-β adapter inducer containing the toll-interleukin-1 receptor (TIR) domain (TRIF). MyD88-mediated signaling triggers a proinflammatory innate immune response, while TRIF-mediated signaling leads to an adaptive immune response. Most studies have used lipopolysaccharide-based ligands as TLR4 ligand-based adjuvants; however, although protein-based ligands have been proven advantageous as adjuvants, their mechanisms of action, including their ability to undergo structural modifications to achieve optimal immunogenicity, have been explored less thoroughly. In this work, we characterized the effects of two protein-based adjuvants (PBAs) on TLR4 signaling via the recruitment of MyD88 and TRIF. As models of TLR4-PBAs, we used hemocyanin from Fissurella latimarginata (FLH) and a recombinant surface immunogenic protein (rSIP) from Streptococcus agalactiae. We determined that rSIP and FLH are partial TLR4 agonists, and depending on the protein agonist used, TLR4 has a unique bias toward the TRIF or MyD88 pathway. Furthermore, when characterizing gene products with MyD88 and TRIF pathway-dependent expression, differences in TLR4-associated signaling were observed. rSIP and FLH require MyD88 and TRIF to activate nuclear factor kappa beta (NF-κB) and interferon regulatory factor (IRF). However, rSIP and FLH have a specific pattern of interleukin 6 (IL-6) and interferon gamma-induced protein 10 (IP-10) secretion associated with MyD88 and TRIF recruitment. Functionally, rSIP and FLH promote antigen cross-presentation in a manner dependent on TLR4, MyD88 and TRIF signaling. However, FLH activates a specific TRIF-dependent signaling pathway associated with cytokine expression and a pathway dependent on MyD88 and TRIF recruitment for antigen cross-presentation. Finally, this work supports the use of these TLR4-PBAs as clinically useful vaccine adjuvants that selectively activate TRIF- and MyD88-dependent signaling to drive safe innate immune responses and vigorous Th1 adaptive immune responses.
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Affiliation(s)
- Diego A. Díaz-Dinamarca
- Sección de Biotecnología, Subdepartamento, Innovación, Desarrollo, Transferencia Tecnológica (I+D+T) y Evaluación de Tecnologías Sanitarias (ETESA), Instituto de Salud Pública, Santiago, Chile
- Laboratorio de Inmunología, Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
- Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santiago, Chile
| | - Michelle L. Salazar
- Laboratorio de Inmunología, Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
| | - Daniel F. Escobar
- Sección de Biotecnología, Subdepartamento, Innovación, Desarrollo, Transferencia Tecnológica (I+D+T) y Evaluación de Tecnologías Sanitarias (ETESA), Instituto de Salud Pública, Santiago, Chile
| | - Byron N. Castillo
- Laboratorio de Inmunología, Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
| | - Bastián Valdebenito
- Sección de Biotecnología, Subdepartamento, Innovación, Desarrollo, Transferencia Tecnológica (I+D+T) y Evaluación de Tecnologías Sanitarias (ETESA), Instituto de Salud Pública, Santiago, Chile
| | - Pablo Díaz
- Sección de Biotecnología, Subdepartamento, Innovación, Desarrollo, Transferencia Tecnológica (I+D+T) y Evaluación de Tecnologías Sanitarias (ETESA), Instituto de Salud Pública, Santiago, Chile
| | | | - Fabián Salazar
- Laboratorio de Inmunología, Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
- Investigación y Desarrollo, BIOSONDA S.A., Santiago, Chile
- Medical Research Council Centre for Medical Mycology, University of Exeter, Exeter, United Kingdom
| | - Mayarling F. Troncoso
- Advanced Center for Chronic Diseases (ACCDiS), Facultad Ciencias Químicas y Farmacéuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
| | - Sergio Lavandero
- Advanced Center for Chronic Diseases (ACCDiS), Facultad Ciencias Químicas y Farmacéuticas and Facultad de Medicina, Universidad de Chile, Santiago, Chile
- Department of Internal Medicine (Cardiology Division), University of Texas Southwestern Medical Center, Dallas, TX, United States
| | - Janepsy Díaz
- Departamento Agencia Nacional de Dispositivos Médicos, Innovación y Desarrollo, Instituto de Salud Pública de Chile, Santiago, Chile
| | - María Inés Becker
- Laboratorio de Inmunología, Fundación Ciencia y Tecnología para el Desarrollo (FUCITED), Santiago, Chile
- Investigación y Desarrollo, BIOSONDA S.A., Santiago, Chile
| | - Abel E. Vásquez
- Sección de Biotecnología, Subdepartamento, Innovación, Desarrollo, Transferencia Tecnológica (I+D+T) y Evaluación de Tecnologías Sanitarias (ETESA), Instituto de Salud Pública, Santiago, Chile
- Facultad de Ciencias de la Salud, Escuela de Medicina, Universidad del Alba, Santiago, Chile
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Bentler M, Hardet R, Ertelt M, Rudolf D, Kaniowska D, Schneider A, Vondran FW, Schoeder CT, Delphin M, Lucifora J, Ott M, Hacker UT, Adriouch S, Büning H. Modifying immune responses to adeno-associated virus vectors by capsid engineering. Mol Ther Methods Clin Dev 2023; 30:576-592. [PMID: 37693943 PMCID: PMC10485635 DOI: 10.1016/j.omtm.2023.08.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 08/18/2023] [Indexed: 09/12/2023]
Abstract
De novo immune responses are considered major challenges in gene therapy. With the aim to lower innate immune responses directly in cells targeted by adeno-associated virus (AAV) vectors, we equipped the vector capsid with a peptide known to interfere with Toll-like receptor signaling. Specifically, we genetically inserted in each of the 60 AAV2 capsid subunits the myeloid differentiation primary response 88 (MyD88)-derived peptide RDVLPGT, known to block MyD88 dimerization. Inserting the peptide neither interfered with capsid assembly nor with vector production yield. The novel capsid variant, AAV2.MB453, showed superior transduction efficiency compared to AAV2 in human monocyte-derived dendritic cells and in primary human hepatocyte cultures. In line with our hypothesis, AAV2.MB453 and AAV2 differed regarding innate immune response activation in primary human cells, particularly for type I interferons. Furthermore, mice treated with AAV2.MB453 showed significantly reduced CD8+ T cell responses against the transgene product for different administration routes and against the capsid following intramuscular administration. Moreover, humoral responses against the capsid were mitigated as indicated by delayed IgG2a antibody formation and an increased NAb50. To conclude, insertion of the MyD88-derived peptide into the AAV2 capsid improved early steps of host-vector interaction and reduced innate and adaptive immune responses.
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Affiliation(s)
- Martin Bentler
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Romain Hardet
- University of Rouen, INSERM, U1234, Pathophysiology Autoimmunity and Immunotherapy (PANTHER), Normandie University, 76000 Rouen, France
| | - Moritz Ertelt
- Institute for Drug Discovery, University of Leipzig Medical Center, 04103 Leipzig, Germany
- Center for Scalable Data Analytics and Artificial Intelligence (ScaDS.AI), Dresden/Leipzig, Germany
| | - Daniela Rudolf
- Laboratory for Vector Based Immunotherapy, Fraunhofer Institute for Cell Therapy and Immunology (IZI), 04103 Leipzig, Germany
| | - Dorota Kaniowska
- Laboratory for Vector Based Immunotherapy, Fraunhofer Institute for Cell Therapy and Immunology (IZI), 04103 Leipzig, Germany
- Department of Medicine II, University Cancer Center Leipzig (UCCL), University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Andreas Schneider
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
| | - Florian W.R. Vondran
- ReMediES, Department of General, Visceral and Transplant Surgery, Hannover Medical School, 30625 Hannover, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
| | - Clara T. Schoeder
- Institute for Drug Discovery, University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Marion Delphin
- CIRI, Centre International de Recherche en Infectiologie, Université de Lyon, Inserm U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Julie Lucifora
- CIRI, Centre International de Recherche en Infectiologie, Université de Lyon, Inserm U1111, Université Claude Bernard Lyon 1, CNRS, UMR5308, ENS de Lyon, 69007 Lyon, France
| | - Michael Ott
- Department of Gastroenterology, Hepatology, and Endocrinology, Hannover Medical School, 30625 Hannover, Germany
| | - Ulrich T. Hacker
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
- Laboratory for Vector Based Immunotherapy, Fraunhofer Institute for Cell Therapy and Immunology (IZI), 04103 Leipzig, Germany
- Department of Medicine II, University Cancer Center Leipzig (UCCL), University of Leipzig Medical Center, 04103 Leipzig, Germany
| | - Sahil Adriouch
- University of Rouen, INSERM, U1234, Pathophysiology Autoimmunity and Immunotherapy (PANTHER), Normandie University, 76000 Rouen, France
| | - Hildegard Büning
- Institute of Experimental Hematology, Hannover Medical School, 30625 Hannover, Germany
- German Center for Infection Research (DZIF), Partner Site Hannover-Braunschweig, 38124 Braunschweig, Germany
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Luan C, Lu Z, Chen J, Chen M, Zhao R, Li X. Thalidomide Alleviates Apoptosis, Oxidative Damage and Inflammation Induced by Pemphigus Vulgaris IgG in HaCat Cells and Neonatal Mice Through MyD88. Drug Des Devel Ther 2023; 17:2821-2839. [PMID: 37719363 PMCID: PMC10504907 DOI: 10.2147/dddt.s407242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 09/02/2023] [Indexed: 09/19/2023] Open
Abstract
Purpose Thalidomide (Tha) can be used as a selective treatment for mild pemphigus vulgaris (PV). However, the specific mechanism of action remains unclear. Patients and Methods PV IgG extracted from patients' serum was cocultured with HaCaT cells to construct a PV cell model, and different concentrations of Tha were used to screen the drug effect. The expression level of MYD88 was assessed in skin lesions of PV patients. Intracellular Ca2+ concentration, reactive oxygen species level, DSG3, PG, MYD88, apoptosis-related proteins (Caspase-3, Bcl-2, and Bax), NF-κB pathway-related proteins (IκBα, p-IκBα, p50, and p65), NLRP3, IFN-γ, TNF-α, IL-6, and IL-8 levels were measured. PV IgG was subcutaneously injected into C57BL/6 neonatal mice to construct the animal model. Immunofluorescence was used to detect IgG deposition in the mouse epidermis, whereas immunohistochemistry and TUNEL methods were used to detect the expression of MYD88 and NLRP3 as well as cell apoptosis level in the mouse epidermis. Results Tha reversed the decrease in Dsg3 and PG caused by PV IgG. The expression of MyD88 increased in the patients' skin, PV cell model, and PV mouse model. The increase in MyD88 expression level in PV cell models and PV newborn mouse models was inhibited by Tha. Overexpression of MyD88 induced a decrease in the expression levels of Dsg3 and PG in Hacat cells. Overexpression of MyD88 inhibited Tha effects on Dsg3 and PG expressions and blocked Tha effects on Ca2+, apoptosis, Bax, Bcl-2, and Caspase-3 expressions, oxidative damage, and inflammatory response in HaCat cells. Tha alleviated acantholysis induced by PV IgG in model mice. Conclusion Through MYD88, Tha attenuated apoptosis of HaCat cells, modulated NF-κB to hamper the oxidative damage and inflammatory response in the PV cell models, and alleviated acantholysis, IgG deposition, and epidermal cell apoptosis induced by PV IgG in model mice.
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Affiliation(s)
- Chunyan Luan
- Department of Dermatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
| | - Zhipeng Lu
- Southwest United Graduate School, Yunnan University, Kunming, Yunnan, 650500, People’s Republic of China
| | - Juan Chen
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
| | - Mengxing Chen
- Department of Dermatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
| | - Ran Zhao
- Department of Dermatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
| | - Xiaolan Li
- Department of Dermatology, The Second Affiliated Hospital of Kunming Medical University, Kunming, People’s Republic of China
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Chan NR, Hwang B, Waworuntu RL, Tran AJ, Ratner BD, Bryers JD. Novel HALO® image analysis to determine cell phenotype in porous precision-templated scaffolds. J Biomed Mater Res A 2023; 111:1459-1467. [PMID: 37029696 PMCID: PMC10524297 DOI: 10.1002/jbm.a.37547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 03/29/2023] [Accepted: 04/02/2023] [Indexed: 04/09/2023]
Abstract
Image analysis platforms have gained increasing popularity in the last decade for the ability to automate and conduct high-throughput, multiplex, and quantitative analyses of a broad range of pathological tissues. However, imaging tissues with unique morphology or tissues containing implanted biomaterial scaffolds remain a challenge. Using HALO®, an image analysis platform specialized in quantitative tissue analysis, we have developed a novel method to determine multiple cell phenotypes in porous precision-templated scaffolds (PTS). PTS with uniform spherical pores between 30 and 40 μm in diameter have previously exhibited a specific immunomodulation of macrophages toward a pro-healing phenotype and an overall diminished foreign body response (FBR) compared to PTS with larger or smaller pore sizes. However, signaling pathways orchestrating this pro-healing in 40 μm PTS remain unclear. Here, we use HALO® to phenotype PTS resident cells and found a decrease in pro-inflammatory CD86 and an increase in pro-healing CD206 expression in 40 μm PTS compared to 100 μm PTS. To understand the mechanisms that drive these outcomes, we investigated the role of myeloid-differentiation-primary-response gene 88 (MyD88) in regulating the pro-healing phenomenon observed only in 40 μm PTS. When subcutaneously implanted in MyD88KO mice, 40 μm PTS reduced the expression of CD206, and the scaffold resident cells displayed an average larger nuclear size compared to 40 μm PTS implanted in mice expressing MyD88. Overall, this study demonstrates a novel image analysis method for phenotyping cells within PTS and identifies MyD88 as a critical mediator in the pore-size-dependent regenerative healing and host immune response to PTS.
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Affiliation(s)
- Nathan R. Chan
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
| | - Billanna Hwang
- Center for Lung Biology, University of Washington, Seattle, WA 98109, USA
- Department of Surgery, University of Washington, Seattle, WA 98195, USA
| | | | - An J. Tran
- Center for Lung Biology, University of Washington, Seattle, WA 98109, USA
| | - Buddy D. Ratner
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
- Department of Chemical Engineering, University of Washington, Seattle, WA 98195, USA
| | - James D. Bryers
- Molecular Engineering and Sciences Institute, University of Washington, Seattle, WA 98195, USA
- Department of Bioengineering, University of Washington, Seattle, WA 98195, USA
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26
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Holloway KN, Douglas JC, Rafferty TM, Kane CJM, Drew PD. Ethanol Induces Neuroinflammation in a Chronic Plus Binge Mouse Model of Alcohol Use Disorder via TLR4 and MyD88-Dependent Signaling. Cells 2023; 12:2109. [PMID: 37626919 PMCID: PMC10453365 DOI: 10.3390/cells12162109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 07/14/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Ethanol induces neuroinflammation, which is believed to contribute to the pathogenesis of alcohol use disorder (AUD). Toll-like receptors (TLRs) are a group of pattern recognition receptors (PRRs) expressed on both immune cells, including microglia and astrocytes, and non-immune cells in the central nervous system (CNS). Studies have shown that alcohol activates TLR4 signaling, resulting in the induction of pro-inflammatory cytokines and chemokines in the CNS. However, the effect of alcohol on signaling pathways downstream of TLR4, such as MyD88 and TRIF (TICAM) signaling, has not been evaluated extensively. In the current study, we treated male wild-type, TLR4-, MyD88-, and TRIF-deficient mice using a chronic plus binge mouse model of AUD. Evaluation of mRNA expression by qRT-PCR revealed that ethanol increased IL-1β, TNF-α, CCL2, COX2, FosB, and JunB in the cerebellum in wild-type and TRIF-deficient mice, while ethanol generally did not increase the expression of these molecules in TLR4- and MyD88-deficient mice. Furthermore, IRF3, IRF7, and IFN-β1, which are associated with the TRIF-dependent signaling cascade, were largely unaffected by alcohol. Collectively, these results suggest that the TLR4 and downstream MyD88-dependent signaling pathways are essential in ethanol-induced neuroinflammation in this mouse model of AUD.
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Affiliation(s)
- Kalee N. Holloway
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - James C. Douglas
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Tonya M. Rafferty
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Cynthia J. M. Kane
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Paul D. Drew
- Department of Neurobiology and Developmental Sciences, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Neurology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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杨 勇, 杨 绥, 陈 宗, 刘 俐. [Association of gene polymorphisms of MyD88 and TICAM1 and their interactions with community-acquired pneumonia in children]. Zhongguo Dang Dai Er Ke Za Zhi 2023; 25:791-799. [PMID: 37668025 PMCID: PMC10484080 DOI: 10.7499/j.issn.1008-8830.2303062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Accepted: 07/03/2023] [Indexed: 09/06/2023]
Abstract
OBJECTIVES To investigate the association of single nucleotide polymorphisms (SNPs) of myeloid differentiation factor 88 (MyD88) and Toll-like receptor adaptor molecule 1 (TICAM1) and their interactions with community-acquired pneumonia (CAP) in children. METHODS Improved multiple ligase detection reaction assay was used for detecting the polymorphisms of nine tagging SNPs of the MyD88 and TICAM1 genes in 375 children with CAP who attended the Department of Pediatrics of the Second Affiliated Hospital of Yan'an University Medical School from August 2015 to September 2017 and 306 healthy children who underwent physical examination. A logistic regression analysis was used to evaluate the association between the distribution of genotypes and their interactions with CAP in children. RESULTS The polymorphism of the TICAM1 gene at rs11466711T/C locus was closely associated with the susceptibility to CAP in children (P<0.05). The AA genotype of rs35747610G/A locus significantly reduced risk of sepsis in children with CAP (P<0.05). The AA genotype of rs6510826G/A locus was significantly associated with the increase in C-reactive protein level in children with CAP (P<0.05). The GG genotype of the MyD88 gene at rs7744A/G locus significantly increased the risk of respiratory failure and circulatory failure (P<0.05). The multiplicative interactions between MyD88 gene rs7744A/G and TICAM1 gene rs11466711T/C, rs2292151G/A, rs35299700C/T, and rs35747610G/A loci were significantly associated with the susceptibility to CAP, the severity of CAP, and the risk of sepsis in children (P<0.05). CONCLUSIONS The gene polymorphisms of MyD88 and TICAM1 and their interactions are closely associated with CAP in children, with a synergistic effect on the development and progression of CAP in children.
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Affiliation(s)
- 勇 杨
- 榆林市第一医院/延安大学医学院第二附属医院儿科,陕西榆林718000
| | - 绥宇 杨
- 榆林市第一医院/延安大学医学院第二附属医院儿科,陕西榆林718000
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28
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Tao W, Su K, Huang Y, Lu Z, Wang Y, Yang L, Zhang G, Liu W. Zuojinwan ameliorates CUMS-induced depressive-like behavior through inducing ubiquitination of MyD88 via SPOP/MyD88/NF-κB pathway. J Ethnopharmacol 2023; 312:116487. [PMID: 37059253 DOI: 10.1016/j.jep.2023.116487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/24/2023] [Accepted: 04/09/2023] [Indexed: 05/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Zuojinwan (ZJW) is a traditional Chinese medicine compound, which is often used clinically to treat gastritis and has anti-inflammatory activity. It was found that ZJW is involved in suppressing the expression of inflammatory factors, and neuroinflammation is thought to be associated with the development of depression. AIM OF THE STUDY In this study, we investigated whether ZJW could exert antidepressant effects by regulating MyD88 ubiquitination in depressed mice and attempted to elucidate the possible mechanisms. MATERIALS AND METHODS Six active compounds of Zuojinwan (ZJW) were identified by HPLC. Then, the effects of ZJW on depression-like behavior in mice were investigated by constructing a chronic unpredictable mild stimulation (CUMS) mouse model. Meanwhile, the effect of ZJW on hippocampal neurons was investigated by Nissl staining. In addition, western blotting, PCR, ELISA, co-immunoprecipitation and immunostaining were used to explore whether ZJW could inhibit neuroinflammation through SPOP/MyD88/NF-κB pathway and thus produce antidepressant effects. Finally, we constructed the AAV-Sh-SPOP virus vector to silence SPOP and verify the mechanism of ZJW's antidepressant action. RESULTS ZJW could dramatically ameliorate the depressive behavior induced by CUMS stimulation and alleviate hippocampal neuronal damage. CUMS stimulation resulted in decreased SPOP expression, impaired MyD88 ubiquitination, and activation of downstream NF-κB signaling, which could be reversed by ZJW. In addition, ZJW could significantly ameliorate the abnormal activation of microglia, and the excessive levels of pro-inflammatory factors were inhibited. By blocking the expression of SPOP, we found that ZJW exerted anti-inflammatory and antidepressant effects mainly by promoting the ubiquitination of MyD88 and inhibiting the activation of downstream inflammatory signals. CONCLUSION In conclusion, ZJW possesses alleviating effects on depression induced by CUMS stimulation. ZJW can inhibit neuroinflammation and improve neuroinflammation-induced depression-like behaviors through SPOP/MyD88/NF-κB pathway.
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Affiliation(s)
- Weiwei Tao
- Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China; School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Kunhan Su
- Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, 210014, China
| | - Yuzhen Huang
- Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, 210014, China
| | - Zihan Lu
- China Pharmaceutical University, Nanjing, 210009, China
| | - Yan Wang
- Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, 210014, China; Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Lu Yang
- Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, 210014, China; Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Guoying Zhang
- School of Chinese Medicine, School of Integrated Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Wanli Liu
- Nanjing First Hospital, Nanjing Medical University, Nanjing, 210006, China; Department of Gastroenterology, Nanjing Integrated Traditional Chinese and Western Medicine Hospital, Nanjing, 210014, China.
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Gonuguntla S, Humphrey RK, Gorantla A, Hao E, Jhala US. Stress-induced pseudokinase TRB3 augments IL1β signaling by interacting with Flightless homolog 1. J Biol Chem 2023; 299:104803. [PMID: 37172723 PMCID: PMC10432976 DOI: 10.1016/j.jbc.2023.104803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 04/20/2023] [Accepted: 04/22/2023] [Indexed: 05/15/2023] Open
Abstract
Interleukin-1β is one of the most potent inducers of beta cell inflammation in the lead-up to type 1 diabetes. We have previously reported that IL1β-stimulated pancreatic islets from mice with genetic ablation of stress-induced pseudokinase TRB3(TRB3KO) show attenuated activation kinetics for the MAP3K MLK3 and JNK stress kinases. However, JNK signaling constitutes only a portion of the cytokine-induced inflammatory response. Here we report that TRB3KO islets also show a decrease in amplitude and duration of IL1β-induced phosphorylation of TAK1 and IKK, kinases that drive the potent NF-κB proinflammatory signaling pathway. We observed that TRB3KO islets display decreased cytokine-induced beta cell death, preceded by a decrease in select downstream NF-κB targets, including iNOS/NOS2 (inducible nitric oxide synthase), a mediator of beta cell dysfunction and death. Thus, loss of TRB3 attenuates both pathways required for a cytokine-inducible, proapoptotic response in beta cells. In order to better understand the molecular basis of TRB3-enhanced, post-receptor IL1β signaling, we interrogated the TRB3 interactome using coimmunoprecipitation followed by mass spectrometry to identify immunomodulatory protein Flightless homolog 1 (Fli1) as a novel, TRB3-interacting protein. We show that TRB3 binds and disrupts Fli1-dependent sequestration of MyD88, thereby increasing availability of this most proximal adaptor required for IL1β receptor-dependent signaling. Fli1 sequesters MyD88 in a multiprotein complex resulting in a brake on the assembly of downstream signaling complexes. By interacting with Fli1, we propose that TRB3 lifts the brake on IL1β signaling to augment the proinflammatory response in beta cells.
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Affiliation(s)
- Sumati Gonuguntla
- Pediatric Diabetes Research Center, University of California San Diego, La Jolla, California, USA
| | - Rohan K Humphrey
- Pediatric Diabetes Research Center, University of California San Diego, La Jolla, California, USA
| | - Akshita Gorantla
- Pediatric Diabetes Research Center, University of California San Diego, La Jolla, California, USA
| | - Ergeng Hao
- Pediatric Diabetes Research Center, University of California San Diego, La Jolla, California, USA
| | - Ulupi S Jhala
- Pediatric Diabetes Research Center, University of California San Diego, La Jolla, California, USA.
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30
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Lu S, He T, Zhang Y, Zhou B, Zhang Q, Yan S. The MyD88 inhibitor, ST2825, induces cell cycle arrest and apoptosis by suppressing the activation of the NF‑κB/AKT1/p21 pathway in pancreatic cancer. Oncol Rep 2023; 50:148. [PMID: 37326109 DOI: 10.3892/or.2023.8585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 05/03/2023] [Indexed: 06/17/2023] Open
Abstract
NF‑κB activation occurs in the majority patients with pancreatic ductal adenocarcinoma (PDAC); however, directly targeting NF‑κB has proven unsuccessful, and recent studies have demonstrated a certain effect of the indirect inhibition of NF‑κB. Myeloid differentiation factor 88 (MyD88) is a common intermediate messenger for NF‑κB activation by inducers. In the present study, the level of MyD88 in PDAC was detected using a public database and a tissue chip. A specific inhibitor (ST2825) of MyD88 was used on PDAC cell lines. Flow cytometry was used to examine apoptosis and cell cycle progression. Transcriptome sequencing was used for ST2825‑treated PANC‑1 cells compared with untreated PANC‑1 cells. The levels of related factors were measured using reverse transcription‑quantitative PCR and western blot analysis. Chromatin immunoprecipitation, co‑immunoprecipitation, transcription factor assay and an NF‑κB phospho‑antibody array were performed to identify the detailed underlying mechanisms. Animal experiments were performed to verify the effects of ST2825 on PDAC, which were found in the in vitro experiments. MyD88 was found to be overexpressed in PDAC. ST2825 induced the G2/M phase cell cycle arrest and apoptosis of PDAC cells. ST2825 inhibited MyD88 dimerization to inactivate the NF‑κB pathway. ST2825 inhibited AKT1 expression and induced p21 overexpression to induce G2/M phase cell cycle arrest and apoptosis by inhibiting NF‑κB transcriptional activity. NF‑κB activation, AKT1 overexpression or p21 knockdown partially reversed the effects of ST2825 in PDAC. On the whole, the findings of the present study demonstrate that ST2825 induces G2/M cell cycle arrest and apoptosis via the MyD88/NF‑κB/AKT1/p21 pathway in PDAC. MyD88 may thus serve as a potential therapeutic target in PDAC. ST2825 may serve as a novel agent for the targeted therapy of PDAC in the future.
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Affiliation(s)
- Sinan Lu
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Tianyu He
- Key Laboratory of Precision Diagnosis and Treatment for Hepatobiliary and Pancreatic Tumor of Zhejiang Province, Hangzhou, Zhejiang 310009, P.R. China
| | - Yuan Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Bo Zhou
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Qiyi Zhang
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Sheng Yan
- Department of Hepatobiliary and Pancreatic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
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31
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Wen R, Zhang TN, Zhang T, Tong YJ, Song WL, Liu YP, Yang N, Liu CF. A novel long noncoding RNA-lncRNA-AABR07066529.3 alleviates inflammation, apoptosis, and pyroptosis by inhibiting MyD88 in lipopolysaccharide-induced myocardial depression. FASEB J 2023; 37:e23063. [PMID: 37401890 DOI: 10.1096/fj.202201680r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 05/27/2023] [Accepted: 06/15/2023] [Indexed: 07/05/2023]
Abstract
Sepsis-induced myocardial depression (SIMD) is common in pediatric intensive care units and seriously threatens children's health. Recently, long noncoding RNAs (lncRNAs) have been showed to play important roles in various diseases; however, its role in SIMD is unclear. In this study, we used lipopolysaccharide (LPS)-treated rats and H9c2 cardiomyocytes to mimic SIMD in vivo and in vitro. We found that the expression of a novel lncRNA, we named lncRNA-AABR07066529.3, was elevated in LPS-induced rat heart tissue and H9c2 cardiomyocytes. In addition, LPS-induced inflammation, apoptosis, and pyroptosis were significantly exacerbated after lncRNA-AABR07066529.3 knockdown. Moreover, we found that myeloid differentiation factor 88 (MyD88) was upregulated in LPS-treated groups and was inhibited by lncRNA-AABR07066529.3. Besides, MyD88 knockdown abolished lncRNA-AABR07066529.3 silencing effects on inflammation, apoptosis, and pyroptosis induced by LPS in H9c2 cardiomyocytes. In our study, we found lncRNA-AABR07066529.3 exerted protective effects on LPS-induced cardiomyocytes by regulating MyD88 and might serve as a potential treatment target for SIMD.
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Affiliation(s)
- Ri Wen
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tie-Ning Zhang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Tao Zhang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yu-Jing Tong
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Wen-Liang Song
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Yong-Ping Liu
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ni Yang
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chun-Feng Liu
- Department of Pediatrics, PICU, Shengjing Hospital of China Medical University, Shenyang, China
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Ono M, Watari S, Nishizawa-Higashi M, Konishi T, Takahashi Y, Saeki H, Joe GH. Water-soluble protein from walleye pollock (Gadus chalcogrammus) suppresses lipopolysaccharide-induced inflammation by attenuating TLR4- MyD88 expression in macrophages. Food Chem (Oxf) 2023; 6:100165. [PMID: 36891454 DOI: 10.1016/j.fochms.2023.100165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/27/2023] [Accepted: 02/03/2023] [Indexed: 02/09/2023]
Abstract
Water-soluble protein (WSP) from fish meat is abundant in the waste effluent generated via the surimi manufacturing process. This study investigated the anti-inflammatory effects and mechanisms of fish WSP using primary macrophages (MΦ) and animal ingestion. MΦ were treated with digested-WSP (d-WSP, 500 µg/mL) with or without lipopolysaccharide (LPS) stimulation. For the ingestion study, male ICR mice (5 weeks old) were fed 4% WSP for 14 days following LPS administration (4 mg/kg body weight). d-WSP decreased the expression of Tlr4, an LPS receptor. Additionally, d-WSP significantly suppressed the secretion of inflammatory cytokines, phagocytic ability, and Myd88 and Il1b expressions of LPS-stimulated macrophages. Furthermore, the ingestion of 4% WSP attenuated not only LPS-induced IL-1β secretion in the blood but also Myd88 and Il1b expressions in the liver. Thus, fish WSP decreases the expressions of the genes involved in the TLR4-MyD88 pathway in MΦ and the liver, thereby suppressing inflammation.
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Key Words
- 2Me, 2-mercaptoethanol
- Anti-inflammation
- Aq, aqua
- E. coli, Escherichia coli
- ELISA, Enzyme-linked immunosorbent assay
- FBS, Fetal bovine serum
- Fish water-soluble protein
- IL-1β, Interleukin 1 beta
- IL-6, Interleukin 6
- LBP, Lipopolysaccharide-binding protein
- LPS
- LPS, Lipopolysaccharide
- Macrophage
- MyD88
- MyD88, Myeloid differentiation primary response 88
- NCDs, Noncommunicable diseases
- NF-κB, Nuclear factor-kappa B
- NLRP3, NACHT, LRR, and PYD domain-containing protein 3
- PBS, Phosphate-buffered saline
- PCR, Polymerase chain reaction
- SDS, Sodium dodecyl sulfate
- TICAM-1, Toll-like receptor adaptor molecule 1
- TLR, Toll-like receptor
- TLR4
- TLR4, Toll-like receptor 4
- TNF-α, Tumor necrosis factor-alpha
- TNFR, Tumor necrosis factor receptor
- TRIF, TIR-domain–containing adapter-inducing interferon-beta
- WSP, Water-soluble protein
- d-WSP, digested water-soluble protein
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Wei W, Mu H, Cui Q, Yu P, Liu T, Wang T, Sheng L. CircTBX5 knockdown modulates the miR-558/ MyD88 axis to alleviate IL-1β-induced inflammation, apoptosis and extracellular matrix degradation in chondrocytes via inactivating the NF-κB signaling. J Orthop Surg Res 2023; 18:477. [PMID: 37393232 DOI: 10.1186/s13018-023-03949-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Accepted: 06/22/2023] [Indexed: 07/03/2023] Open
Abstract
BACKGROUND It has been widely shared that the dysregulation of circular RNA (circRNA) may contribute to the progression of osteoarthritis (OA). OA is characterized by persistent chondrocyte injury. We aimed to clarify the role of circTBX5 in IL-1β-induced chondrocyte injury. METHODS The expression of circTBX5, miR-558 and MyD88 mRNA was measured using quantitative real-time PCR (qPCR). Cell viability, proliferation and apoptosis were assessed by CCK-8, EdU or flow cytometry assay. The protein levels of extracellular matrix (ECM)-associated markers, MyD88, IkBα, p65 and phosphorylated IkBα were measured by western blot. The release of inflammatory factors was assessed by ELISA. The targets of circTBX5 were screened by RIP and pull-down assay. The putative binding between miR-558 and circTBX5 or MyD88 was validated by dual-luciferase reporter assay. RESULTS CircTBX5 and MyD88 were enhanced, while miR-558 was downregulated in OA cartilage tissues and IL-1β-treated C28/I2 cells. IL-1β induced C28/I2 cell injury by impairing cell viability and proliferation and promoting cell apoptosis, ECM degradation and inflammatory response, while circTBX5 knockdown alleviated IL-1β induced injury. CircTBX5 bound to miR-558 to regulate IL-1β induced cell injury. In addition, MyD88 was a target of miR-558, and circTBX5 targeted miR-558 to positively regulate MyD88 expression. MiR-558 enrichment attenuated IL-1β induced injury by sequestering MyD88 expression. Moreover, circTBX5 knockdown weakened the activity of NF-κB signaling, while miR-558 inhibition or MyD88 overexpression recovered the activity of NF-κB signaling. CONCLUSION CircTBX5 knockdown modulated the miR-558/MyD88 axis to alleviate IL-1β induced chondrocyte apoptosis, ECM degradation and inflammation via inactivating the NF-кB signaling pathway.
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Affiliation(s)
- Wei Wei
- Department of Rehabilitation Medicine, Yantaishan Hospital, Yantai, China
| | - Hongjie Mu
- Sports Medicine, Yantaishan Hospital, Yantai, China
| | - Qiaoyi Cui
- Department of Rehabilitation Medicine, Yantaishan Hospital, Yantai, China
| | - Peng Yu
- Department of Rehabilitation Medicine, Yantaishan Hospital, Yantai, China
| | - Tong Liu
- Foot and Ankle Surgery, Yantaishan Hospital, Yantai, China
| | - Tao Wang
- Department of Rehabilitation Medicine, Yantaishan Hospital, Yantai, China
| | - Lin Sheng
- Department of Medicine, Yantai City Yu Huangding Hospital, No. 20 Yuhuang East Road, Zhifu District, Yantai, 264000, Shandong, China.
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Yu K, Guo YY, Liuyu T, Wang P, Zhang ZD, Lin D, Zhong B. The deubiquitinase OTUD4 inhibits the expression of antimicrobial peptides in Paneth cells to support intestinal inflammation and bacterial infection. Cell Insight 2023; 2:100100. [PMID: 37193092 PMCID: PMC10123543 DOI: 10.1016/j.cellin.2023.100100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 03/16/2023] [Accepted: 03/29/2023] [Indexed: 05/18/2023]
Abstract
Dysfunction of the intestinal epithelial barrier causes microbial invasion that would lead to inflammation in the gut. Antimicrobial peptides (AMPs) are essential components of the intestinal epithelial barrier, while the regulatory mechanisms of AMPs expression are not fully characterized. Here, we report that the ovarian tumor family deubiquitinase 4 (OTUD4) in Paneth cells restricts the expression of AMPs and thereby promotes experimental colitis and bacterial infection. OTUD4 is upregulated in the inflamed mucosa of ulcerative colitis patients and in the colon of mice treated with dextran sulfate sodium salt (DSS). Knockout of OTUD4 promotes the expression of AMPs in intestinal organoids after stimulation with lipopolysaccharide (LPS) or peptidoglycan (PGN) and in the intestinal epithelial cells (IECs) of mice after DSS treatment or Salmonella typhimurium (S.t.) infection. Consistently, Vil-Cre;Otud4fl/fl mice and Def-Cre;Otud4fl/fl mice exhibit hyper-resistance to DSS-induced colitis and S.t. infection compared to Otud4fl/fl mice. Mechanistically, knockout of OTUD4 results in hyper K63-linked ubiquitination of MyD88 and increases the activation of NF-κB and MAPKs to promote the expression of AMPs. These findings collectively highlight an indispensable role of OTUD4 in Paneth cells to modulate AMPs production and indicate OTUD4 as a potential target for gastrointestinal inflammation and bacterial infection.
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Affiliation(s)
- Keying Yu
- Department of Gastrointestinal Surgery, College of Life Sciences, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
- Department of Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430071, China
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430071, China
| | - Yu-Yao Guo
- Department of Gastrointestinal Surgery, College of Life Sciences, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
- Department of Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430071, China
| | - Tianzi Liuyu
- Department of Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430071, China
| | - Peng Wang
- Department of Gastrointestinal Surgery, College of Life Sciences, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
- Department of Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430071, China
| | - Zhi-Dong Zhang
- Department of Gastrointestinal Surgery, College of Life Sciences, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
- Department of Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430071, China
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430071, China
| | - Dandan Lin
- Cancer Center, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430060, China
| | - Bo Zhong
- Department of Gastrointestinal Surgery, College of Life Sciences, Zhongnan Hospital of Wuhan University, Wuhan University, Wuhan, 430071, China
- Department of Immunology, Medical Research Institute, Frontier Science Center for Immunology and Metabolism, Wuhan University, Wuhan, 430071, China
- Wuhan Research Center for Infectious Diseases and Cancer, Chinese Academy of Medical Sciences, Wuhan, 430071, China
- TaiKang Center for Life and Medical Sciences, Wuhan University, Wuhan, 430071, China
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Wang L, Cui Y, Liu H, Wu J, Li J, Liu X. PM2.5 aggravates airway inflammation in asthmatic mice: activating NF-κB via MyD88 signaling pathway. Int J Environ Health Res 2023; 33:563-574. [PMID: 35227140 DOI: 10.1080/09603123.2022.2041561] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The role of PM2.5 in the bronchial asthma remains unclear. In this study, the deficient mice of TLR4-/-, TLR2-/- and MyD88 -/- were used to establish asthma model. The effects of PM2.5 on the inflammatory response in lung tissue of these mice were observed. PM2.5 increased alveolar macrophages and neutrophils, up-regulated the IL-12 and KC expression in WT mice, but down-regulated their levels in TLR2 -/-, TLR4 -/- and MyD88 -/- mice. OVA+PM2.5 stimulated neutrophil count in WT mice, but it decreased in TLR2 -/- and TLR4 -/- mice. OVA+PM2.5 also increased the Eotaxin, IL-5, IL-13 and MCP-3 expression levels, and OVA specific IgE and IgG1 in serum also increased in WT group. PM2.5 may activate NF-κB through the TLR2/TLR4/MyD88 signaling pathway and aggravate allergic inflammation of lung in asthmatic mice. The microelements in PM2.5 granules, such as lipopolysaccharide, may be an important factor in the high incidence of asthma.
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Affiliation(s)
- Lei Wang
- Department of Respiratory Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China
| | - Yanzhi Cui
- Department of Respiratory Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China
| | - Hu Liu
- Department of Respiratory Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China
| | - Jing Wu
- Department of Respiratory Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China
| | - Jie Li
- Department of Respiratory Medicine, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Taiyuan, Shanxi, China
| | - Xiansheng Liu
- Department of Respiratory Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
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Velasco WV, Khosravi N, Castro-Pando S, Torres-Garza N, Grimaldo MT, Krishna A, Clowers MJ, Umer M, Tariq Amir S, Del Bosque D, Daliri S, De La Garza MM, Ramos-Castaneda M, Evans SE, Moghaddam SJ. Toll-like receptors 2, 4, and 9 modulate promoting effect of COPD-like airway inflammation on K-ras-driven lung cancer through activation of the MyD88/NF-ĸB pathway in the airway epithelium. Front Immunol 2023; 14:1118721. [PMID: 37283745 PMCID: PMC10240392 DOI: 10.3389/fimmu.2023.1118721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Accepted: 05/02/2023] [Indexed: 06/08/2023] Open
Abstract
Introduction Toll-like receptors (TLRs) are an extensive group of proteins involved in host defense processes that express themselves upon the increased production of endogenous damage-associated molecular patterns (DAMPs) and pathogen-associated molecular patterns (PAMPs) due to the constant contact that airway epithelium may have with pathogenic foreign antigens. We have previously shown that COPD-like airway inflammation induced by exposure to an aerosolized lysate of nontypeable Haemophilus influenzae (NTHi) promotes tumorigenesis in a K-ras mutant mouse model of lung cancer, CCSPCre/LSL-K-rasG12D (CC-LR) mouse. Methods In the present study, we have dissected the role of TLRs in this process by knocking out TLR2, 4, and 9 and analyzing how these deletions affect the promoting effect of COPD-like airway inflammation on K-ras-driven lung adenocarcinoma. Results We found that knockout of TLR 2, 4, or 9 results in a lower tumor burden, reduced angiogenesis, and tumor cell proliferation, accompanied by increased tumor cell apoptosis and reprogramming of the tumor microenvironment to one that is antitumorigenic. Additionally, knocking out of downstream signaling pathways, MyD88/NF-κB in the airway epithelial cells further recapitulated this initial finding. Discussion Our study expands the current knowledge of the roles that TLR signaling plays in lung cancer, which we hope, can pave the way for more reliable and efficacious prevention and treatment modalities for lung cancer.
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Affiliation(s)
- Walter V. Velasco
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nasim Khosravi
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Susana Castro-Pando
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Nelly Torres-Garza
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, Mexico
| | - Maria T. Grimaldo
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- UTHealth Houston Graduate School of Biomedical Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Avantika Krishna
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- UTHealth Houston Graduate School of Biomedical Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Michael J. Clowers
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- UTHealth Houston Graduate School of Biomedical Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Misha Umer
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Sabah Tariq Amir
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Diana Del Bosque
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Soudabeh Daliri
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
| | - Maria Miguelina De La Garza
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, Mexico
| | - Marco Ramos-Castaneda
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- Tecnologico de Monterrey, Escuela de Medicina y Ciencias de la Salud, Monterrey, Nuevo Leon, Mexico
| | - Scott E. Evans
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- UTHealth Houston Graduate School of Biomedical Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
| | - Seyed Javad Moghaddam
- Department of Pulmonary Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, United States
- UTHealth Houston Graduate School of Biomedical Sciences, The University of Texas M.D. Anderson Cancer Center, Houston, TX, United States
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Cui B, Liu Y, Chen J, Chen H, Feng Y, Zhang P. Small molecule inhibitor CRT0066101 inhibits cytokine storm syndrome in a mouse model of lung injury. Int Immunopharmacol 2023; 120:110240. [PMID: 37182445 PMCID: PMC10181585 DOI: 10.1016/j.intimp.2023.110240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 04/08/2023] [Accepted: 04/22/2023] [Indexed: 05/16/2023]
Abstract
Pneumonia is an acute inflammation of the lungs induced by pathogenic microorganisms, immune damage, physical and chemical factors, and other factors, and the latest outbreak of novel coronavirus pneumonia is also an acute lung injury (ALI) induced by viral infection. However, there are currently no effective treatments for inflammatory cytokine storms in patients with ALI/acute respiratory distress syndrome (ARDS). Protein kinase D (PKD) is a highly active kinase that has been shown to be associated with the production of inflammatory cytokines. Therefore, small-molecule compounds that inhibit PKD may be potential drugs for the treatment of ALI/ARDS. In the present study, we evaluated the ability of the small-molecule inhibitor CRT0066101 to attenuate lipopolysaccharide (LPS)-induced inflammatory cytokine production through in vitro cell experiments and a mouse pneumonia model. We found that CRT0066101 significantly reduced the protein and mRNA levels of LPS-induced cytokines (e.g., IL-6, TNF-α, and IL-1β). CRT0066101 inhibited MyD88 and TLR4 expression and reduced NF-κB, ERK, and JNK phosphorylation. CRT0066101 also reduced NLRP3 activation, inhibited the assembly of the inflammasome complex, and attenuated inflammatory cell infiltration and lung tissue damage. Taken together, our data indicate that CRT0066101 exerts anti-inflammatory effects on LPS-induced inflammation through the TLR4/MyD88 signaling pathway, suggesting that CRT0066101 may have therapeutic value in acute lung injury and other MyD88-dependent inflammatory diseases.
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Affiliation(s)
- Bomiao Cui
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, 14, Renmin South Road Section 3, Chengdu, Sichuan 610041, PR China
| | - Yiying Liu
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, 14, Renmin South Road Section 3, Chengdu, Sichuan 610041, PR China
| | - Jiao Chen
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, 14, Renmin South Road Section 3, Chengdu, Sichuan 610041, PR China
| | - Hongli Chen
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, 14, Renmin South Road Section 3, Chengdu, Sichuan 610041, PR China
| | - Yun Feng
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, 14, Renmin South Road Section 3, Chengdu, Sichuan 610041, PR China
| | - Ping Zhang
- State Key Laboratory of Oral Diseases, West China School of Stomatology, Sichuan University, 14, Renmin South Road Section 3, Chengdu, Sichuan 610041, PR China.
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Yuan Y, Shi Z, Wang Q, Guo M, Yuan L, Zhao Z, Liu S, Wu C, Sun R, Wang B, Ouyang G, Ji W. Molecular characterization and expression analyses of five genes involved in the MyD88-dependent pathway of yellow catfish (Pelteobagrus fulvidraco) responding to challenge of Aeromonas hydrophila. Fish Shellfish Immunol 2023; 137:108712. [PMID: 37030559 DOI: 10.1016/j.fsi.2023.108712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 03/23/2023] [Accepted: 03/25/2023] [Indexed: 05/07/2023]
Abstract
MyD88-dependent pathway mediated by Toll-like receptor is one of the vital ways activating immune responses. In order to identify the role of MyD88-dependent signaling pathway in yellow catfish, the Pf_MyD88, Pf_IRAK4, Pf_IRAK1, Pf_TRAF6 and Pf_NFκB1 (p105) (Pf: abbreviation of Pelteobagrus fulvidraco) were cloned and characterized respectively. The Pf_MyD88, Pf_IRAK4, Pf_IRAK1 and Pf_TRAF6 were all highly conserved among species and showed the highest homology to that of Pangasianodon hypophthalmus. Pf_NFκB1 showed the highest homology to that of Ictalurus punetaus. All of the five genes showed similar expression patterns in various tissues, with the highest expression level in the liver. These genes also showed similar expression levels in different embryonic development stages, except Pf_IRAK4. The higher expression level was detected from fertilized eggs to 1 day post hatching (dph), lower expression from 3 dph to 30 dph. After stimulation of inactivated Aeromonas hydrophila, the mRNA expressions of Pf_MyD88, Pf_IRAK4, Pf_IRAK1, Pf_TRAF6 and Pf_NFκB1 were significantly increased at 24 h in the liver, spleen, head kidney and trunk kidney, suggesting that all the five genes were involved in the innate immune response of yellow catfish. These results showed that MyD88-dependent signaling pathway plays important roles for disease defensing in the innate immune response. Meanwhile, inactivated A. hydrophila can cause strong innate immune response, which provides theoretical bases for the application of inactivated vaccines in defense against bacterial diseases of teleost.
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Affiliation(s)
- Yujie Yuan
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Zechao Shi
- Yangtze River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Wuhan, 430223, China
| | - Qin Wang
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mengge Guo
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Le Yuan
- Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Zhangchun Zhao
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Sixue Liu
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Chen Wu
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ruhan Sun
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Bingchao Wang
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China
| | - Gang Ouyang
- Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China.
| | - Wei Ji
- Department of Aquatic Animal Medicines, College of Fisheries, Key Laboratory of Freshwater Animal Breeding, Ministry of Agriculture and Rural Affair/Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction, Ministry of Education, Huazhong Agricultural University, Wuhan, 430070, China.
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Cao B, Zhao Y, Luo Q, Chen Y, Xu T, Sun Y. Vinculin B inhibits NF-κB signaling pathway by targeting MyD88 in miiuy croaker, Miichthys miiuy. Fish Shellfish Immunol 2023; 135:108683. [PMID: 36931481 DOI: 10.1016/j.fsi.2023.108683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/14/2023] [Accepted: 03/11/2023] [Indexed: 06/18/2023]
Abstract
Myeloid differentiation factor 88 (MyD88) is the canonical adaptor for inflammatory signaling pathways downstream from members of the Toll-like receptor (TLR) and interleukin-1 (IL-1) receptor families, which activates the NF-κB signaling pathway and regulates immune and inflammatory responses. In this study, we found that Vinculin B (Vclb) is an inhibitor in the NF-κB signaling pathway, and its inhibitory effect was enhanced by LPS induction. Furthermore, Vclb inhibits NF-κB activation by targeting MyD88, thereby suppressing the production of inflammatory cytokines. Mechanistically, Vclb inhibits the NF-κB signaling pathway by targeting MyD88 ubiquitin-proteasome pathway. In summary, our study reveals that Vclb inhibits NF-κB signaling activation and mediates innate immunity in teleosts via the ubiquitin-proteasome pathway of MyD88.
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Affiliation(s)
- Baolan Cao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Yan Zhao
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Qiang Luo
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Ya Chen
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China
| | - Tianjun Xu
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; Laboratory of Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China.
| | - Yuena Sun
- Laboratory of Fish Molecular Immunology, College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China; National Pathogen Collection Center for Aquatic Animals, Shanghai Ocean University, China; Key Laboratory of Freshwater Aquatic Genetic Resources, Ministry of Agriculture and Rural Affairs, Shanghai Ocean University, China.
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Gu X, Wei M, Hu F, Ouyang H, Huang Z, Lu B, Ji L. Chlorogenic acid ameliorated non-alcoholic steatohepatitis via alleviating hepatic inflammation initiated by LPS/TLR4/ MyD88 signaling pathway. Chem Biol Interact 2023; 376:110461. [PMID: 36965689 DOI: 10.1016/j.cbi.2023.110461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 03/15/2023] [Accepted: 03/19/2023] [Indexed: 03/27/2023]
Abstract
Non-alcoholic steatohepatitis (NASH) is a severe pathological stage in non-alcoholic fatty liver disease (NAFLD) and is generally recognized to be induced by chronic inflammation. Natural compound chlorogenic acid (CGA) is well-known for its anti-inflammatory capacity. This study aimed at evaluating the alleviation of CGA on NASH and further exploring its engaged mechanism via focusing on abrogating hepatic inflammation. Our results showed that CGA had a good amelioration on NASH in vivo. CGA alleviated liver oxidative injury by inducing nuclear factor erythroid 2-related factor 2 (Nrf2) activation and reduced liver steatosis via up-regulating peroxisome proliferator-activated receptor-alpha (PPARα). CGA attenuated hepatic inflammation in vivo, but didn't decrease the elevated lipopolysaccharide (LPS) content. CGA blocked the activation of nuclear factor kappa-B (NFκB) or inflammasome both in MCDD-fed mice and in LPS-stimulated macrophages. CGA was found to directly bind to myeloid differentiation primary response 88 (MyD88), and thus competitively blocked the interaction between toll-like receptor 4 (TLR4) and MyD88, thereby abrogating hepatic inflammation initiated by LPS-TLR4-MyD88. Moreover, the CGA-provided anti-inflammatory effect was obviously disappeared in macrophages overexpressed MyD88. Hence, CGA has an excellent efficacy in improving NASH. CGA alleviated liver inflammation during NASH progression through blocking LPS-TLR4-MyD88 signaling pathway via directly binding to MyD88.
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Affiliation(s)
- Xinnan Gu
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Mengjuan Wei
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Feifei Hu
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Hao Ouyang
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Zhenlin Huang
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Bin Lu
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Lili Ji
- The MOE Key Laboratory for Standardization of Chinese Medicines, Shanghai Key Laboratory of Compound Chinese Medicines, The SATCM Key Laboratory for New Resources and Quality Evaluation of Chinese Medicines, Institute of Chinese Materia Medica, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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Guerrero-Romero F, Castellanos-Juárez FX, Salas-Pacheco JM, Morales-Gurrola FG, Salas-Leal AC, Simental-Mendía LE. Association between the expression of TLR4, TLR2, and MyD88 with low-grade chronic inflammation in individuals with metabolically healthy obesity. Mol Biol Rep 2023; 50:4723-4728. [PMID: 36905405 DOI: 10.1007/s11033-023-08338-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Accepted: 02/15/2023] [Indexed: 03/12/2023]
Abstract
BACKGROUND Among the Toll-like receptors (TLR) that are dependent of myeloid response protein (MyD88), the TLR4 and TLR2 are directly associated with low-grade chronic inflammation; however, they are not been investigated in subjects with metabolically healthy obesity (MHO). Thus, the objective of this study was to determine the association between the expression of TLR4, TLR2, and MyD88 with low-grade chronic inflammation in individuals with MHO. METHODS AND RESULTS Men and women with obesity aged 20 to 55 years were enrolled in a cross-sectional study. Individuals with MHO were allocated into the groups with and without low-grade chronic inflammation. Pregnancy, smoking, alcohol consumption, intense physical activity or sexual intercourse in the previous 72 h, diabetes, high blood pressure, cancer, thyroid disease, acute or chronic infections, renal impairment, and hepatic diseases, were exclusion criteria. The MHO phenotype was defined by a body mass index (BMI ≥ 30 kg/m2) plus one or none of the following cardiovascular risk factors: hyperglycemia, elevated blood pressure, hypertriglyceridemia, and low high-density lipoprotein cholesterol. A total of 64 individuals with MHO were enrolled and allocated into the groups with (n = 37) and without (n = 27) inflammation. The multiple logistic regression analysis indicated that TLR2 expression is significantly associated with inflammation in individuals with MHO. In the subsequent analysis adjusted by BMI, TLR2 expression remained associated with inflammation in individuals with MHO. CONCLUSION Our results suggest that overexpression of TLR2, but not TLR4 and MyD88, is associated with low-grade chronic inflammation in subjects with MHO.
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Affiliation(s)
- Fernando Guerrero-Romero
- Unidad de Investigación Biomédica, Instituto Mexicano del Seguro Social, Predio Canoas 100, Col. Los Angeles, 34077, Durango, Dgo, Mexico
| | | | - Jose M Salas-Pacheco
- Institute of Scientific Research, Juarez University of the State of Durango, Durango, México
| | - Francisco G Morales-Gurrola
- Unidad de Investigación Biomédica, Instituto Mexicano del Seguro Social, Predio Canoas 100, Col. Los Angeles, 34077, Durango, Dgo, Mexico.,Institute of Scientific Research, Juarez University of the State of Durango, Durango, México
| | | | - Luis E Simental-Mendía
- Unidad de Investigación Biomédica, Instituto Mexicano del Seguro Social, Predio Canoas 100, Col. Los Angeles, 34077, Durango, Dgo, Mexico.
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Goretzki A, Lin YJ, Meier C, Dorn B, Wolfheimer S, Jamin A, Schott M, Wangorsch A, Vieths S, Jakob T, Scheurer S, Schülke S. Stimulation of naïve B cells with a fusion protein consisting of FlaA and Bet v 1 induces regulatory B cells ex vivo. Allergy 2023; 78:663-681. [PMID: 36196479 DOI: 10.1111/all.15542] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 08/30/2022] [Accepted: 09/18/2022] [Indexed: 11/28/2022]
Abstract
BACKGROUND The experimental fusion protein rFlaA:Betv1 was shown to efficiently suppress allergen-specific sensitization in mice. However, the detailed mechanism of rFlaA:Betv1-mediated immune modulation is not fully understood. In this study, we investigated the effect of rFlaA:Betv1 on naïve murine B cells. METHODS Immune modulating capacity of rFlaA:Betv1 was screened in IL-10 reporter mice. B cells were isolated from spleens of naïve C57Bl/6, TLR5-/- , or MyD88-/- mice, stimulated with rFlaA:Betv1 and controls, and monitored for the expression of the regulatory B cell markers CD1d, CD24, CD38, and surface IgM by flow cytometry. Secreted cytokines, antibodies, and reactivity of the induced antibodies were investigated by ELISA and intracellular flow cytometry. Suppressive capacity of rFlaA:Betv1-stimulated B cells was tested in mDC:CD4+ T cell:B cell triple cultures. RESULTS Upon in vivo application of rFlaA:Betv1 into IL-10-GFP reporter mice, CD19+ B cells were shown to produce anti-inflammatory IL-10, suggesting B cells to contribute to the immune-modulatory properties of rFlaA:Betv1. rFlaA:Betv1-induced IL-10 secretion was confirmed in human B cells isolated from buffy coats. In vitro stimulation of naïve murine B cells with rFlaA:Betv1 resulted in an mTOR- and MyD88-dependent production of IL-10 and rFlaA:Betv1 induced Bet v 1-reactive IgG production, which was not observed for IgA. rFlaA:Betv1-stimulated B cells formed a CD19+ CD24+ CD1d+ IgM+ CD38+ Breg subpopulation capable of suppressing Bet v 1-induced TH2 cytokine secretion in vitro. CONCLUSION rFlaA:Betv1 can act as a thymus-independent B cell antigen, stimulating the mTOR- and MyD88-dependent differentiation of B cells displaying a regulatory phenotype, IL-10 secretion, antigen-binding antibody production, and a suppressive capacity in vitro.
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Affiliation(s)
| | - Yen-Ju Lin
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Clara Meier
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Britta Dorn
- Department of Dermatology and Allergology, University Medical Center, Justus Liebig University, Gießen, Germany
| | | | - Annette Jamin
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Maike Schott
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | | | - Stefan Vieths
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
| | - Thilo Jakob
- Department of Dermatology and Allergology, University Medical Center, Justus Liebig University, Gießen, Germany
| | | | - Stefan Schülke
- Molecular Allergology, Paul-Ehrlich-Institut, Langen, Germany
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Varodayan FP, Pahng AR, Davis TD, Gandhi P, Bajo M, Steinman MQ, Kiosses WB, Blednov YA, Burkart MD, Edwards S, Roberts AJ, Roberto M. Chronic ethanol induces a pro-inflammatory switch in interleukin-1β regulation of GABAergic signaling in the medial prefrontal cortex of male mice. Brain Behav Immun 2023; 110:125-139. [PMID: 36863493 PMCID: PMC10106421 DOI: 10.1016/j.bbi.2023.02.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 02/20/2023] [Accepted: 02/25/2023] [Indexed: 03/04/2023] Open
Abstract
Neuroimmune pathways regulate brain function to influence complex behavior and play a role in several neuropsychiatric diseases, including alcohol use disorder (AUD). In particular, the interleukin-1 (IL-1) system has emerged as a key regulator of the brain's response to ethanol (alcohol). Here we investigated the mechanisms underlying ethanol-induced neuroadaptation of IL-1β signaling at GABAergic synapses in the prelimbic region of the medial prefrontal cortex (mPFC), an area responsible for integrating contextual information to mediate conflicting motivational drives. We exposed C57BL/6J male mice to the chronic intermittent ethanol vapor-2 bottle choice paradigm (CIE-2BC) to induce ethanol dependence, and conducted ex vivo electrophysiology and molecular analyses. We found that the IL-1 system regulates basal mPFC function through its actions at inhibitory synapses on prelimbic layer 2/3 pyramidal neurons. IL-1β can selectively recruit either neuroprotective (PI3K/Akt) or pro-inflammatory (MyD88/p38 MAPK) mechanisms to produce opposing synaptic effects. In ethanol naïve conditions, there was a strong PI3K/Akt bias leading to a disinhibition of pyramidal neurons. Ethanol dependence produced opposite IL-1 effects - enhanced local inhibition via a switch in IL-1β signaling to the canonical pro-inflammatory MyD88 pathway. Ethanol dependence also increased cellular IL-1β in the mPFC, while decreasing expression of downstream effectors (Akt, p38 MAPK). Thus, IL-1β may represent a key neural substrate in ethanol-induced cortical dysfunction. As the IL-1 receptor antagonist (kineret) is already FDA-approved for other diseases, this work underscores the high therapeutic potential of IL-1 signaling/neuroimmune-based treatments for AUD.
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Affiliation(s)
- F P Varodayan
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA; Developmental Exposure Alcohol Research Center and Behavioral Neuroscience Program, Department of Psychology, Binghamton University-SUNY, Binghamton, NY, USA
| | - A R Pahng
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA; Southeast Louisiana Veterans Health Care System, New Orleans, LA, USA
| | - T D Davis
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA, USA; Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, Binghamton University-SUNY, Binghamton, NY, USA
| | - P Gandhi
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - M Bajo
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - M Q Steinman
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - W B Kiosses
- Microscopy Core Imaging Facility, La Jolla Institute for Immunology, La Jolla, CA 92037, USA
| | - Y A Blednov
- Waggoner Center for Alcohol and Addiction Research, University of Texas at Austin, Austin, TX 78712, USA
| | - M D Burkart
- Department of Chemistry & Biochemistry, University of California, San Diego, La Jolla, CA, USA
| | - S Edwards
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA, USA
| | - A J Roberts
- Animal Models Core Facility, The Scripps Research Institute, La Jolla, CA, USA
| | - M Roberto
- Department of Molecular Medicine, The Scripps Research Institute, La Jolla, CA, USA.
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Sun X, Hosomi K, Shimoyama A, Yoshii K, Lan H, Wang Y, Yamaura H, Nagatake T, Ishii KJ, Akira S, Kiyono H, Fukase K, Kunisawa J. TLR4 agonist activity of Alcaligenes lipid a utilizes MyD88 and TRIF signaling pathways for efficient antigen presentation and T cell differentiation by dendritic cells. Int Immunopharmacol 2023; 117:109852. [PMID: 36806039 DOI: 10.1016/j.intimp.2023.109852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 01/18/2023] [Accepted: 02/04/2023] [Indexed: 02/22/2023]
Abstract
Alcaligenes faecalis was previously identified as an intestinal lymphoid tissue-resident commensal bacteria, and our subsequent studies showed that lipopolysaccharide and its core active element (i.e., lipid A) have a potent adjuvant activity to promote preferentially antigen-specific Th17 response and antibody production. Here, we compared A. faecalis lipid A (ALA) with monophosphoryl lipid A, a licensed lipid A-based adjuvant, to elucidate the immunological mechanism underlying the adjuvant properties of ALA. Compared with monophosphoryl lipid A, ALA induced higher levels of MHC class II molecules and costimulatory CD40, CD80, and CD86 on dendritic cells (DCs), which in turn resulted in strong T cell activation. Moreover, ALA more effectively promoted the production of IL-6 and IL-23 from DCs than did monophosphoryl lipid A, thus leading to preferential induction of Th17 and Th1 cells. As underlying mechanisms, we found that the ALA-TLR4 axis stimulated both MyD88- and TRIF-mediated signaling pathways, whereas monophosphoryl lipid A was biased toward TRIF signaling. These findings revealed the effects of ALA on DCs and T cells and its induction pattern on signaling pathways.
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Affiliation(s)
- Xiao Sun
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Koji Hosomi
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan
| | - Atsushi Shimoyama
- Graduate School of Science, Osaka University, Osaka, Japan; Collaborative Research between NIBIOHN and Graduate School of Science, Forefront Research Center, Osaka University, Osaka, Japan
| | - Ken Yoshii
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Huangwenxian Lan
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Yunru Wang
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan
| | - Haruki Yamaura
- Graduate School of Science, Osaka University, Osaka, Japan
| | - Takahiro Nagatake
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Laboratory of Functional Anatomy, Department of Life Sciences, School of Agriculture, Meiji University, Kanagawa, Japan
| | - Ken J Ishii
- International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Division of Vaccine Science, Department of Microbiology and Immunology, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Immunology Frontier Research Center, Osaka University, Osaka, Japan; Center for Vaccine and Adjuvant Research (CVAR), National Institute of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan
| | - Shizuo Akira
- Immunology Frontier Research Center, Osaka University, Osaka, Japan
| | - Hiroshi Kiyono
- International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Division of Gastroenterology, Department of Medicine, University of California San Diego (UCSD), San Diego, CA, United States; Chiba University (CU)-UCSD Center for Mucosal Immunology, Allergy and Vaccines (cMAV), UCSD, San Diego, CA, United States; Future Medicine Education and Research Organization, Chiba University, Chiba, Japan; Department of Human Mucosal Vaccinology, Chiba University Hospital, Chiba, Japan; Division of Mucosal Immunology, IMSUT Distinguished Professor Unit, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Koichi Fukase
- Graduate School of Science, Osaka University, Osaka, Japan; Collaborative Research between NIBIOHN and Graduate School of Science, Forefront Research Center, Osaka University, Osaka, Japan
| | - Jun Kunisawa
- Laboratory of Vaccine Materials, Center for Vaccine and Adjuvant Research, and Laboratory of Gut Environmental System, Collaborative Research Center for Health and Medicine, National Institutes of Biomedical Innovation, Health and Nutrition (NIBIOHN), Osaka, Japan; Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, Japan; Graduate School of Science, Osaka University, Osaka, Japan; Collaborative Research between NIBIOHN and Graduate School of Science, Forefront Research Center, Osaka University, Osaka, Japan; Graduate School of Medicine, Osaka University, Osaka, Japan; International Vaccine Design Center, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan; Department of Microbiology and Immunology, Kobe University Graduate School of Medicine, Kobe, Japan; Research Organization for Nano and Life Innovation, Waseda University, Tokyo, Japan; Graduate School of Dentistry, Osaka University, Suita, Japan.
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Ward GA, Dalton RP, Meyer BS, McLemore AF, Aldrich AL, Lam NB, Onimus AH, Vincelette ND, Trinh TL, Chen X, Calescibetta AR, Christiansen SM, Hou HA, Johnson JO, Wright KL, Padron E, Eksioglu EA, List AF. Oxidized Mitochondrial DNA Engages TLR9 to Activate the NLRP3 Inflammasome in Myelodysplastic Syndromes. Int J Mol Sci 2023; 24:ijms24043896. [PMID: 36835307 PMCID: PMC9966808 DOI: 10.3390/ijms24043896] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 02/09/2023] [Accepted: 02/14/2023] [Indexed: 02/17/2023] Open
Abstract
Myelodysplastic Syndromes (MDSs) are bone marrow (BM) failure malignancies characterized by constitutive innate immune activation, including NLRP3 inflammasome driven pyroptotic cell death. We recently reported that the danger-associated molecular pattern (DAMP) oxidized mitochondrial DNA (ox-mtDNA) is diagnostically increased in MDS plasma although the functional consequences remain poorly defined. We hypothesized that ox-mtDNA is released into the cytosol, upon NLRP3 inflammasome pyroptotic lysis, where it propagates and further enhances the inflammatory cell death feed-forward loop onto healthy tissues. This activation can be mediated via ox-mtDNA engagement of Toll-like receptor 9 (TLR9), an endosomal DNA sensing pattern recognition receptor known to prime and activate the inflammasome propagating the IFN-induced inflammatory response in neighboring healthy hematopoietic stem and progenitor cells (HSPCs), which presents a potentially targetable axis for the reduction in inflammasome activation in MDS. We found that extracellular ox-mtDNA activates the TLR9-MyD88-inflammasome pathway, demonstrated by increased lysosome formation, IRF7 translocation, and interferon-stimulated gene (ISG) production. Extracellular ox-mtDNA also induces TLR9 redistribution in MDS HSPCs to the cell surface. The effects on NLRP3 inflammasome activation were validated by blocking TLR9 activation via chemical inhibition and CRISPR knockout, demonstrating that TLR9 was necessary for ox-mtDNA-mediated inflammasome activation. Conversely, lentiviral overexpression of TLR9 sensitized cells to ox-mtDNA. Lastly, inhibiting TLR9 restored hematopoietic colony formation in MDS BM. We conclude that MDS HSPCs are primed for inflammasome activation via ox-mtDNA released by pyroptotic cells. Blocking the TLR9/ox-mtDNA axis may prove to be a novel therapeutic strategy for MDS.
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Affiliation(s)
- Grace A. Ward
- Cancer Biology PhD Program, University of South Florida and H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Robert P. Dalton
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Benjamin S. Meyer
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Amy F. McLemore
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Amy L. Aldrich
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Nghi B. Lam
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Alexis H. Onimus
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Nicole D. Vincelette
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Thu Le Trinh
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Xianghong Chen
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | | | - Sean M. Christiansen
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Hsin-An Hou
- Division of Hematology, Department of Internal Medicine, National Taiwan University Hospital Taipei, Taipei 100229, Taiwan
| | - Joseph O. Johnson
- Analytic Microscopy Core Facility, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Kenneth L. Wright
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Eric Padron
- Department of Malignant Hematology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
| | - Erika A. Eksioglu
- Department of Immunology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA
- Correspondence: ; Tel.: +1-813-745-8560
| | - Alan F. List
- Precision BioSciences, Inc., Durham, NC 27701, USA
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Fu Q, Jiang J, Li X, Zhai Z, Wang X, Li C, Chen Q, Man C, Du L, Wang F, Chen S. Activation of MyD88-Dependent TLR Signaling Modulates Immune Response of the Mouse Heart during Pasteurella multocida Infection. Microorganisms 2023; 11:microorganisms11020400. [PMID: 36838365 PMCID: PMC9967429 DOI: 10.3390/microorganisms11020400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Revised: 01/31/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Pasteurella multocida (P. multocida) is an important zoonotic pathogen. In addition to lung lesions, necropsies have revealed macroscopic lesions in the heart in clinical cases. However, most previous studies focused on lung lesions while ignoring heart lesions. Therefore, to investigate the immune response of the P. multocida-infected heart, two murine infection models were established by using P. multocida serotype A (Pm HN02) and D (Pm HN01) strains. Histopathological examination revealed heterogeneous inflammatory responses, including immune cell infiltration in the epicardial and myocardial areas of the heart. Transcriptome sequencing was performed on infected cardiac tissues. To explore the traits of immune responses, we performed the functional enrichment analysis of differentially expressed genes, gene set enrichment analysis and gene set variation analysis. The results showed that the innate immune pathways were significantly regulated in both groups, including the NOD-like receptor signaling pathway, the complement and coagulation cascade and cytokine-cytokine receptor interaction. The Toll-like receptor signaling pathway was only significantly activated in the Pm HN02 group. For the Pm HN02 group, immunohistochemistry analysis further verified the significant upregulation of the hub component MyD88 at the protein level. In conclusion, this study reveals critical pathways for host heart recognition and defense against P. multocida serotypes A and D. Moreover, MyD88 was upregulated by P. multocida serotype A in the heart, providing a theoretical basis for future prevention, diagnosis and treatment research.
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Yao XP, Ye J, Feng T, Jiang FC, Zhou P, Wang F, Chen JG, Wu PF. Adaptor protein MyD88 confers the susceptibility to stress via amplifying immune danger signals. Brain Behav Immun 2023; 108:204-220. [PMID: 36496170 PMCID: PMC9726649 DOI: 10.1016/j.bbi.2022.12.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 11/27/2022] [Accepted: 12/04/2022] [Indexed: 12/12/2022] Open
Abstract
Increasing evidence supports the pathogenic role of neuroinflammation in psychiatric diseases, including major depressive disorder (MDD) and neuropsychiatric symptoms of Coronavirus disease 2019 (COVID-19); however, the precise mechanism and therapeutic strategy are poorly understood. Here, we report that myeloid differentiation factor 88 (MyD88), a pivotal adaptor that bridges toll-like receptors to their downstream signaling by recruiting the signaling complex called 'myddosome', was up-regulated in the medial prefrontal cortex (mPFC) after exposure to chronic social defeat stress (CSDS) or severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike protein. The inducible expression of MyD88 in the mPFC primed neuroinflammation and conferred stress susceptibility via amplifying immune danger signals, such as high-mobility group box 1 and SARS-CoV-2 spike protein. Overexpression of MyD88 aggravated, whereas knockout or pharmacological inhibition of MyD88 ameliorated CSDS-induced depressive-like behavior. Notably, TJ-M2010-5, a novel synthesized targeting inhibitor of MyD88 dimerization, alleviated both CSDS- and SARS-CoV-2 spike protein-induced depressive-like behavior. Taken together, our findings indicate that inhibiting MyD88 signaling represents a promising therapeutic strategy for stress-related mental disorders, such as MDD and COVID-19-related neuropsychiatric symptoms.
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Affiliation(s)
- Xia-Ping Yao
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jian Ye
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ting Feng
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Feng-Chao Jiang
- School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ping Zhou
- Institute of Organ Transplantation, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Fang Wang
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, China; The Research Center for Depression, Tongji Medical College, Huazhong University of Science, 430030 Wuhan, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, China.
| | - Jian-Guo Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, China; The Research Center for Depression, Tongji Medical College, Huazhong University of Science, 430030 Wuhan, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, China.
| | - Peng-Fei Wu
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; The Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation of Hubei Province, Wuhan, China; The Research Center for Depression, Tongji Medical College, Huazhong University of Science, 430030 Wuhan, China; Key Laboratory of Neurological Diseases (HUST), Ministry of Education of China, Wuhan, China.
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Chen X, Lu D, Liu W, Xie J, Lu Z, Yang H, Yan H, Wang L, Che C. Therapeutic effect of Atractylenolide I on Aspergillus fumigatus keratitis by affecting MyD88/ NF-κB pathway and IL-1β, IL-10 expression. Cytokine 2023; 162:156112. [PMID: 36521238 DOI: 10.1016/j.cyto.2022.156112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 12/03/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022]
Abstract
PURPOSE Atractylenolide I (AT-I) is a natural sesquiterpene with anti-inflammatory effects. The purpose of this study was to research the anti-inflammatory effect of AT-I on Aspergillus fumigatus(A. fumigatus) keratitis in mice. METHODS Cytotoxicity test and cell scratch test were used to determine the therapeutic concentrations of corneal infections. In vivo and in vitro studies, mouse cornea and human corneal epithelial cells (HCECs) infected with A. fumigatus were treated with AT-I or dimethyl sulfoxide (DMSO). Then, to analyze the effect of AT-I on inflammatory response, namely neutrophil or macrophage recruitment and the expression of cytokines involving MyD88, NF-κB, interleukin 1β (IL-1β) and interleukin 10 (IL-10). To study the effects of the drug, the techniques used include slit-lamp photography, immunofluorescence, myeloperoxidase (MPO) detection, quantitative real-time polymerase chain reaction (QRT-PCR), and western blot. At the same time, in order to explore the combined effect of the drug and natamycin, slit-lamp photographs and clinical scores were used to visually display the disease process. RESULTS No cytotoxicity was observed under the action of AT-I at a concentration of 800 μM. In mouse models, AT-I significantly suppressed inflammatory responses, reduced neutrophil and macrophage recruitment, and decreased myeloperoxidase levels early in infection. Studies have shown that AT-I may reduce the levels of IL-1β and IL-10 by inhibiting the MyD88/ NF-κB pathway. The drug combined with natamycin can increase corneal transparency in infected mice. CONCLUSION AT-I may inhibit MyD88 / NF-κB pathway and the secretion of inflammatory factors IL-1 β and IL-10 to achieve the therapeutic effect of fungal keratitis.
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Affiliation(s)
- Xiaomeng Chen
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Danli Lu
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Wenting Liu
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Jianye Xie
- Department of Geriatrics, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Zhenjun Lu
- Department of Otorhinolaryngology-Head and Neck Surgery, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Hua Yang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Haijing Yan
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Limei Wang
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China
| | - Chengye Che
- Department of Ophthalmology, the Affiliated Hospital of Qingdao University, Qingdao, Shandong Province, China.
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49
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Huat TJ, Onraet T, Camats-Perna J, Newcombe EA, Ngo KC, Sue AN, Mirzaei M, LaFerla FM, Medeiros R. Deletion of MyD88 in astrocytes prevents β-amyloid-induced neuropathology in mice. Glia 2023; 71:431-449. [PMID: 36271704 PMCID: PMC9970273 DOI: 10.1002/glia.24285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 10/04/2022] [Accepted: 10/07/2022] [Indexed: 11/07/2022]
Abstract
As the understanding of immune responses in Alzheimer's disease (AD) is in its early phases, there remains an urgency to identify the cellular and molecular processes driving chronic inflammation. In AD, a subpopulation of astrocytes acquires a neurotoxic phenotype which prompts them to lose typical physiological features. While the underlying molecular mechanisms are still unknown, evidence suggests that myeloid differentiation primary response 88 (MyD88) adaptor protein may play a role in coordinating these cells' immune responses in AD. Herein, we combined studies in human postmortem samples with a conditional genetic knockout mouse model to investigate the link between MyD88 and astrocytes in AD. In silico analyses of bulk and cell-specific transcriptomic data from human postmortem brains demonstrated an upregulation of MyD88 expression in astrocytes in AD versus non-AD individuals. Proteomic studies revealed an increase in glial fibrillary acidic protein in multiple brain regions of AD subjects. These studies also showed that although overall MyD88 steady-state levels were unaffected by AD, this protein was enriched in astrocytes near amyloid plaques and neurofibrillary tangles. Functional studies in mice indicated that the deletion of astrocytic MyD88 protected animals from the acute synaptic toxicity and cognitive impairment caused by the intracerebroventricular administration of β-amyloid (Aβ). Lastly, unbiased proteomic analysis revealed that loss of astrocytic MyD88 resulted in altered astrocyte reactivity, lower levels of immune-related proteins, and higher expression of synaptic-related proteins in response to Aβ. Our studies provide evidence of the pivotal role played by MyD88 in the regulation of astrocytes response to AD.
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Affiliation(s)
- Tee Jong Huat
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland. Brisbane, QLD, Australia
- Centre for Stem Cell Ageing and Regenerative Engineering, The University of Queensland. Brisbane, QLD, Australia
| | - Tessa Onraet
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland. Brisbane, QLD, Australia
| | - Judith Camats-Perna
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland. Brisbane, QLD, Australia
| | - Estella A. Newcombe
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland. Brisbane, QLD, Australia
| | - Kim C. Ngo
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine. Irvine, CA, USA
| | - Ashley N. Sue
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine. Irvine, CA, USA
| | - Mehdi Mirzaei
- Clinical Medicine Department, Faculty of Medicine, Health and Human Sciences, Macquarie University. Sydney, NSW, Australia
| | - Frank M. LaFerla
- Department of Neurobiology and Behavior, University of California, Irvine. Irvine, CA, USA
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine. Irvine, CA, USA
| | - Rodrigo Medeiros
- Clem Jones Centre for Ageing Dementia Research, Queensland Brain Institute, The University of Queensland. Brisbane, QLD, Australia
- Institute for Memory Impairments and Neurological Disorders, University of California, Irvine. Irvine, CA, USA
- Correspondence: Rodrigo Medeiros, University of California, Irvine, 3400A Biological Sciences III, Irvine, CA 92697-4545.
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50
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Chou ST, Lin TM, Yang HY, Fugmann SD. Functional characterization of the MyD88 homologs in Strongylocentrotus purpuratus. Dev Comp Immunol 2023; 139:104580. [PMID: 36306972 DOI: 10.1016/j.dci.2022.104580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/18/2022] [Accepted: 10/19/2022] [Indexed: 06/16/2023]
Abstract
Toll-like receptor signaling is an evolutionarily conserved pathway to induce the expression of immune mediators in response to encounters with pathogens. MyD88 is a central adapter connecting the intracellular domain of the receptors to downstream kinases. Here, we conducted a comprehensive assessment of the MyD88 family in an echinoderm, Strongylocentrotus purpuratus. Of five SpMyD88s only two closely related proteins, SpMyD88A and SpMyD88B, are functional in mammalian cell lines as their overexpression facilitates the activation of the downstream transcription factor NF-κB. This requires the presence of the endogenous mammalian MyD88s, and domain swapping indicated that the death domains of S. purpuratus MyD88 are unable to efficiently connect to the respective domains of the vertebrate IRAK kinases. This suggests that the interaction surfaces between the signaling mediators in this conserved signaling pathway are not as conserved as previously thought but were likely shaped and evolved by pathogenic selection over evolutionary timescales.
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Affiliation(s)
- Shu-Ting Chou
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Tse-Mao Lin
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan
| | - Huang-Yu Yang
- Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan; Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taiwan
| | - Sebastian D Fugmann
- Department of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan; Graduate Institute of Biomedical Sciences, Chang Gung University, Taoyuan, Taiwan; Center of Molecular and Clinical Immunology, Chang Gung University, Taiwan; Department of Nephrology, Chang Gung Memorial Hospital, Linkou, Taiwan.
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