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Shahbaz MA, Kuivanen S, Mussalo L, Afonin AM, Kumari K, Behzadpour D, Kalapudas J, Koivisto AM, Penttilä E, Löppönen H, Jalava P, Vapalahti O, Balistreri G, Lampinen R, Kanninen KM. Exposure to urban particulate matter alters responses of olfactory mucosal cells to SARS-CoV-2 infection. ENVIRONMENTAL RESEARCH 2024; 249:118451. [PMID: 38341073 DOI: 10.1016/j.envres.2024.118451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 02/01/2024] [Accepted: 02/07/2024] [Indexed: 02/12/2024]
Abstract
Respiratory viruses have a significant impact on health, as highlighted by the COVID-19 pandemic. Exposure to air pollution can contribute to viral susceptibility and be associated with severe outcomes, as suggested by recent epidemiological studies. Furthermore, exposure to particulate matter (PM), an important constituent of air pollution, is linked to adverse effects on the brain, including cognitive decline and Alzheimer's disease (AD). The olfactory mucosa (OM), a tissue located at the rooftop of the nasal cavity, is directly exposed to inhaled air and in direct contact with the brain. Increasing evidence of OM dysfunction related to neuropathogenesis and viral infection demonstrates the importance of elucidating the interplay between viruses and air pollutants at the OM. This study examined the effects of subacute exposure to urban PM 0.2 and PM 10-2.5 on SARS-CoV-2 infection using primary human OM cells obtained from cognitively healthy individuals and individuals diagnosed with AD. OM cells were exposed to PM and subsequently infected with the SARS-CoV-2 virus in the presence of pollutants. SARS-CoV-2 entry receptors and replication, toxicological endpoints, cytokine release, oxidative stress markers, and amyloid beta levels were measured. Exposure to PM did not enhance the expression of viral entry receptors or cellular viral load in human OM cells. However, PM-exposed and SARS-CoV-2-infected cells showed alterations in cellular and immune responses when compared to cells infected only with the virus or pollutants. These changes are highly pronounced in AD OM cells. These results suggest that exposure of human OM cells to PM does not increase susceptibility to SARS-CoV-2 infection in vitro, but it can alter cellular immune responses to the virus, particularly in AD. Understanding the interplay of air pollutants and COVID-19 can provide important insight for the development of public health policies and interventions to reduce the negative influences of air pollution exposure.
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Affiliation(s)
- Muhammad Ali Shahbaz
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland
| | - Suvi Kuivanen
- University of Helsinki, Department of Virology, Faculty of Medicine, Helsinki, Finland; Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Institute of Virology, Berlin, Germany
| | - Laura Mussalo
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland
| | - Alexey M Afonin
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland
| | - Kajal Kumari
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland
| | - Donya Behzadpour
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland
| | - Juho Kalapudas
- University of Eastern Finland, Brain Research Unit, Department of Neurology, School of Medicine, Kuopio, Finland
| | - Anne M Koivisto
- University of Eastern Finland, Brain Research Unit, Department of Neurology, School of Medicine, Kuopio, Finland; Kuopio University Hospital, Department of Neurology, Neuro Centre, Kuopio, Finland; University of Helsinki, Faculty of Medicine, Department of Neurology and Geriatrics, Helsinki University Hospital and Neurosciences, Helsinki, Finland
| | - Elina Penttilä
- University of Eastern Finland and Kuopio University Hospital, Department of Otorhinolaryngology, Kuopio, Finland
| | - Heikki Löppönen
- University of Eastern Finland and Kuopio University Hospital, Department of Otorhinolaryngology, Kuopio, Finland
| | - Pasi Jalava
- University of Eastern Finland, Inhalation Toxicology Laboratory, Department of Environmental and Biological Sciences, Kuopio, Finland
| | - Olli Vapalahti
- University of Helsinki, Department of Virology, Faculty of Medicine, Helsinki, Finland
| | - Giuseppe Balistreri
- University of Helsinki, Department of Virology, Faculty of Medicine, Helsinki, Finland
| | - Riikka Lampinen
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland
| | - Katja M Kanninen
- University of Eastern Finland, A.I. Virtanen Institute for Molecular Sciences, Kuopio, Finland.
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2
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Moghaddam MM, Behzadi E, Sedighian H, Goleij Z, Kachuei R, Heiat M, Fooladi AAI. Regulation of immune responses to infection through interaction between stem cell-derived exosomes and toll-like receptors mediated by microRNA cargoes. Front Cell Infect Microbiol 2024; 14:1384420. [PMID: 38756232 PMCID: PMC11096519 DOI: 10.3389/fcimb.2024.1384420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 04/22/2024] [Indexed: 05/18/2024] Open
Abstract
Infectious diseases are among the factors that account for a significant proportion of disease-related deaths worldwide. The primary treatment approach to combat microbial infections is the use of antibiotics. However, the widespread use of these drugs over the past two decades has led to the emergence of resistant microbial species, making the control of microbial infections a serious challenge. One of the most important solutions in the field of combating infectious diseases is the regulation of the host's defense system. Toll-like receptors (TLRs) play a crucial role in the first primary defense against pathogens by identifying harmful endogenous molecules released from dying cells and damaged tissues as well as invading microbial agents. Therefore, they play an important role in communicating and regulating innate and adaptive immunity. Of course, excessive activation of TLRs can lead to disruption of immune homeostasis and increase the risk of inflammatory reactions. Targeting TLR signaling pathways has emerged as a new therapeutic approach for infectious diseases based on host-directed therapy (HDT). In recent years, stem cell-derived exosomes have received significant attention as factors regulating the immune system. The regulation effects of exosomes on the immune system are based on the HDT strategy, which is due to their cargoes. In general, the mechanism of action of stem cell-derived exosomes in HDT is by regulating and modulating immunity, promoting tissue regeneration, and reducing host toxicity. One of their most important cargoes is microRNAs, which have been shown to play a significant role in regulating immunity through TLRs. This review investigates the therapeutic properties of stem cell-derived exosomes in combating infections through the interaction between exosomal microRNAs and Toll-like receptors.
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Affiliation(s)
- Mehrdad Moosazadeh Moghaddam
- Tissue Engineering and Regenerative Medicine Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Elham Behzadi
- The Academy of Medical Sciences of I.R. Iran, Tehran, Iran
| | - Hamid Sedighian
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Zoleikha Goleij
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Reza Kachuei
- Molecular Biology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohammad Heiat
- Baqiyatallah Research Center for Gastroenterology and Liver Diseases (BRCGL), Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abbas Ali Imani Fooladi
- Applied Microbiology Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Singh D, Mathur S, Ranjan R. Pattern recognition receptors as potential therapeutic targets for developing immunological engineered plants. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2024; 140:525-555. [PMID: 38762279 DOI: 10.1016/bs.apcsb.2024.02.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2024]
Abstract
There is an urgent need to combat pathogen infestations in crop plants to ensure food security worldwide. To counter this, plants have developed innate immunity mediated by Pattern Recognition Receptors (PRRs) that recognize pathogen-associated molecular patterns (PAMPs) and damage- associated molecular patterns (DAMPs). PRRs activate Pattern-Triggered Immunity (PTI), a defence mechanism involving intricate cell-surface and intracellular receptors. The diverse ligand-binding ectodomains of PRRs, including leucine-rich repeats (LRRs) and lectin domains, facilitate the recognition of MAMPs and DAMPs. Pathogen resistance is mediated by a variety of PTI responses, including membrane depolarization, ROS production, and the induction of defence genes. An integral part of intracellular immunity is the Nucleotide-binding Oligomerization Domain, Leucine-rich Repeat proteins (NLRs) which recognize and respond to effectors in a potent manner. Enhanced understanding of PRRs, their ligands, and downstream signalling pathways has contributed to the identification of potential targets for genetically modified plants. By transferring PRRs across plant species, it is possible to create broad-spectrum resistance, potentially offering innovative solutions for plant protection and global food security. The purpose of this chapter is to provide an update on PRRs involved in disease resistance, clarify the mechanisms by which PRRs recognize ligands to form active receptor complexes and present various applications of PRRs and PTI in disease resistance management for plants.
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Affiliation(s)
- Deeksha Singh
- Department of Botany, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra-282005, India
| | - Shivangi Mathur
- Department of Botany, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra-282005, India
| | - Rajiv Ranjan
- Department of Botany, Faculty of Science, Dayalbagh Educational Institute, Dayalbagh, Agra-282005, India.
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Wang K, Lai W, Min T, Wei J, Bai Y, Cao H, Guo J, Su Z. The Effect of Enteric-Derived Lipopolysaccharides on Obesity. Int J Mol Sci 2024; 25:4305. [PMID: 38673890 PMCID: PMC11050189 DOI: 10.3390/ijms25084305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/11/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Endotoxin is a general term for toxic substances in Gram-negative bacteria, whose damaging effects are mainly derived from the lipopolysaccharides (LPS) in the cell walls of Gram-negative bacteria, and is a strong pyrogen. Obesity is a chronic, low-grade inflammatory condition, and LPS are thought to trigger and exacerbate it. The gut flora is the largest source of LPS in the body, and it is increasingly believed that altered intestinal microorganisms can play an essential role in the pathology of different diseases. Today, the complex axis linking gut flora to inflammatory states and adiposity has not been well elucidated. This review summarises the evidence for an interconnection between LPS, obesity, and gut flora, further expanding our understanding of LPS as a mediator of low-grade inflammatory disease and contributing to lessening the effects of obesity and related metabolic disorders. As well as providing targets associated with LPS, obesity, and gut flora, it is hoped that interventions that combine targets with gut flora address the individual differences in gut flora treatment.
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Affiliation(s)
- Kai Wang
- Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (K.W.); (W.L.); (T.M.); (J.W.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Weiwen Lai
- Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (K.W.); (W.L.); (T.M.); (J.W.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Tianqi Min
- Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (K.W.); (W.L.); (T.M.); (J.W.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Jintao Wei
- Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (K.W.); (W.L.); (T.M.); (J.W.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yan Bai
- School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China;
| | - Hua Cao
- School of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Zhongshan 528458, China;
| | - Jiao Guo
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zhengquan Su
- Guangdong Provincial University Engineering Technology Research Center of Natural Products and Drugs, Guangdong Pharmaceutical University, Guangzhou 510006, China; (K.W.); (W.L.); (T.M.); (J.W.)
- Guangdong Metabolic Disease Research Center of Integrated Chinese and Western Medicine, Guangdong Pharmaceutical University, Guangzhou 510006, China
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Lee B, Park JE, Yoon SJ, Park CM, Lee NY, Shin TG, Kang ES. No Significant Differences in Presepsin Levels According to the Causative Microorganism of Bloodstream Infection. Infect Chemother 2024; 56:47-56. [PMID: 38178709 PMCID: PMC10990877 DOI: 10.3947/ic.2023.0066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/06/2023] [Indexed: 01/06/2024] Open
Abstract
BACKGROUND CD14 recognizes lipopolysaccharide (LPS), and presepsin is a fragment of soluble CD14. Still, it remains uncertain whether Gram-negative bacteria induce higher presepsin levels than other microorganisms. To address this question, this study aimed to analyze presepsin levels based on microorganisms isolated in blood cultures. MATERIALS AND METHODS This study was a single-center study comprising suspected sepsis patients enrolled from July 2020 to September 2020. A total of 95 patients with a single isolate confirmed in blood culture were analyzed to evaluate if there are any differences in presepsin levels according to microbial isolates. Plasma presepsin level was measured using PATHFAST assay kit and analyzer (LSI Medience Corporation, Tokyo, Japan). RESULTS There were 26 Gram-positive bacteremia, 65 Gram-negative bacteremia, and 3 fungemia patients with median presepsin levels of 869, 1,439, and 11,951 pg/mL, respectively. Besides, one case of algaemia demonstrated a presepsin level of 1,231 pg/mL. Our results showed no statistically significant difference in presepsin levels among patients with Gram-positive bacteremia, Gram-negative bacteremia, and fungemia. Furthermore, presepsin levels did not differ significantly among bloodstream infections caused by bacteria that were isolated from at least three different patients. In particular, Gram-positive bacteria such as Staphylococcus aureus and Enterococcus faecalis were able to induce presepsin levels comparable to those induced by Gram-negative bacteria. CONCLUSION We demonstrated that there were no significant differences in plasma presepsin levels according to microbial isolates in blood culture. The major cause of the variability in presepsin levels during bloodstream infection might be the immunogenicity of each microorganism rather than the presence of LPS in the microorganism.
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Affiliation(s)
- Beomki Lee
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Jong Eun Park
- Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Department of Emergency Medicine, College of Medicine, Kangwon National University, Chuncheon, Korea
| | - Sun Joo Yoon
- Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Chi-Min Park
- Department of Critical Care Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
- Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Nam Yong Lee
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Tae Gun Shin
- Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Eun-Suk Kang
- Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
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Gurubaran IS. Mitochondrial damage and clearance in retinal pigment epithelial cells. Acta Ophthalmol 2024; 102 Suppl 282:3-53. [PMID: 38467968 DOI: 10.1111/aos.16661] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 01/31/2024] [Indexed: 03/13/2024]
Abstract
Age-related macular degeneration (AMD) is a devastating eye disease that causes permanent vision loss in the central part of the retina, known as the macula. Patients with such severe visual loss face a reduced quality of life and are at a 1.5 times greater risk of death compared to the general population. Currently, there is no cure for or effective treatment for dry AMD. There are several mechanisms thought to underlie the disease, for example, ageing-associated chronic oxidative stress, mitochondrial damage, harmful protein aggregation and inflammation. As a way of gaining a better understanding of the molecular mechanisms behind AMD and thus developing new therapies, we have created a peroxisome proliferator-activated receptor gamma coactivator 1-alpha and nuclear factor erythroid 2-related factor 2 (PGC1α/NFE2L2) double-knockout (dKO) mouse model that mimics many of the clinical features of dry AMD, including elevated levels of oxidative stress markers, damaged mitochondria, accumulating lysosomal lipofuscin and extracellular drusen-like structures in retinal pigment epithelial cells (RPE). In addition, a human RPE cell-based model was established to examine the impact of non-functional intracellular clearance systems on inflammasome activation. In this study, we found that there was a disturbance in the autolysosomal machinery responsible for clearing mitochondria in the RPE cells of one-year-old PGC1α/NFE2L2-deficient mice. The confocal immunohistochemical analysis revealed an increase in autophagosome marker microtubule-associated proteins 1A/1B light chain 3B (LC3B) as well as multiple mitophagy markers such as PTE-induced putative kinase 1 (PINK1) and E3 ubiquitin ligase (PARKIN), along with signs of damaged mitochondria. However, no increase in autolysosome formation was detected, nor was there a colocalization of the lysosomal marker LAMP2 or the mitochondrial marker, ATP synthase β. There was an upregulation of late autolysosomal fusion Ras-related protein (Rab7) in the perinuclear space of RPE cells, together with autofluorescent aggregates. Additionally, we observed an increase in the numbers of Toll-like receptors 3 and 9, while those of NOD-like receptor 3 were decreased in PGC1α/NFE2L2 dKO retinal specimens compared to wild-type animals. There was a trend towards increased complement component C5a and increased involvement of the serine protease enzyme, thrombin, in enhancing the terminal pathway producing C5a, independent of C3. The levels of primary acute phase C-reactive protein and receptor for advanced glycation end products were also increased in the PGC1α/NFE2L2 dKO retina. Furthermore, selective proteasome inhibition with epoxomicin promoted both nicotinamide adenine dinucleotide phosphate (NADPH) oxidase and mitochondrial-mediated oxidative stress, leading to the release of mitochondrial DNA to the cytosol, resulting in potassium efflux-dependent activation of the absent in melanoma 2 (AIM2) inflammasome and the subsequent secretion of interleukin-1β in ARPE-19 cells. In conclusion, the data suggest that there is at least a relative decrease in mitophagy, increases in the amounts of C5 and thrombin and decreased C3 levels in this dry AMD-like model. Moreover, selective proteasome inhibition evoked mitochondrial damage and AIM2 inflammasome activation in ARPE-19 cells.
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Affiliation(s)
- Iswariyaraja Sridevi Gurubaran
- Department of Medicine, Clinical Medicine Unit, University of Eastern Finland Institute of Clinical Medicine, Kuopio, Northern Savonia, Finland
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Xiao H, Zhang H, Wang G, Wang Y, Tan Z, Sun X, Zhou J, Duan M, Zhi D, Hang C, Zhang G, Li Y, Wu C, Zhang H, Xie M, Li C. COMPARISON AMONG PRESEPSIN, PROCALCITONIN, AND C-REACTIVE PROTEIN IN PREDICTING BLOOD CULTURE POSITIVITY AND PATHOGEN IN SEPSIS PATIENTS. Shock 2024; 61:387-394. [PMID: 37878488 DOI: 10.1097/shk.0000000000002243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
ABSTRACT Background: Sepsis is caused by the invasion of the bloodstream by microorganisms from local sites of infection, leading to high mortality. This study aimed to compare the predictive ability of the biomarkers presepsin, procalcitonin (PCT), and C-reactive protein for bacteraemia. Methods: In this retrospective, multicentre study, a dataset of patients with sepsis who were prospectively enrolled between November 2017 and June 2021 was analyzed. The performances of the biomarkers for predicting positive blood cultures and infection with specific pathogens were assessed by the areas under the receiver operating characteristic curves (AUCs). The independent effects of the pathogen and foci of infection on presepsin and PCT levels were assessed by linear logistic regression models. Results: A total of 577 patients with 170 positive blood cultures (29.5%) were enrolled. The AUC achieved using PCT levels (0.856) was significantly higher than that achieved using presepsin (0.786, P = 0.0200) and C-reactive protein (0.550, P < 0.0001) levels in predicting bacteraemia. The combined analysis of PCT and presepsin levels led to a significantly higher AUC than the analysis of PCT levels alone for predicting blood culture positivity (0.877 vs. 0.856, P = 0.0344) and gram-negative bacteraemia (0.900 vs. 0.875, P = 0.0216). In a linear regression model, the elevated concentrations of presepsin and PCT were both independently related to Escherichia coli , Klebsiella species, Pseudomonas species, and Streptococcus species infections and Sequential Organ Failure Assessment score. Presepsin levels were also associated with Acinetobacter species and abdominal infection, and PCT levels were positively associated with other Enterobacteriaceae and negatively associated with respiratory infection. Combined analysis of presepsin and PCT levels provided a high sensitivity and specificity in identifying E. coli or Klebsiella species infection. Conclusions: Presepsin and PCT were promising markers for predicting bacteraemia and common pathogens at the time of sepsis onset with a synergistic effect.
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Affiliation(s)
- Hongli Xiao
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hanyu Zhang
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Guoxing Wang
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yan Wang
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhimin Tan
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xuelian Sun
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jie Zhou
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Meili Duan
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Deyuan Zhi
- Department of Critical Care Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Chenchen Hang
- Department of Emergency Medicine, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China
| | - Guoqiang Zhang
- Department of Emergency Medicine, China-Japan Friendship Hospital, Peking Union Medical College, Beijing, China
| | - Yan Li
- Department of Emergency Medicine, China-Japan Friendship Hospital, Peking Union Medical College, Beijing, China
| | - Caijun Wu
- Department of Emergency Medicine, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing, China
| | - Haiyan Zhang
- Department of Emergency Medicine, The Hospital of Shunyi District Beijing, China Medical University, Beijing, China
| | - Miaorong Xie
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Chunsheng Li
- Department of Emergency Medicine, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Marin MJ, van Wijk XMR, Chambliss AB. Advances in sepsis biomarkers. Adv Clin Chem 2024; 119:117-166. [PMID: 38514209 DOI: 10.1016/bs.acc.2024.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
Sepsis, a dysregulated host immune response to an infectious agent, significantly increases morbidity and mortality for hospitalized patients worldwide. This chapter reviews (1) the basic principles of infectious diseases, pathophysiology and current definition of sepsis, (2) established sepsis biomarkers such lactate, procalcitonin and C-reactive protein, (3) novel, newly regulatory-cleared/approved biomarkers, such as assays that evaluate white blood cell properties and immune response molecules, and (4) emerging biomarkers and biomarker panels to highlight future directions and opportunities in the diagnosis and management of sepsis.
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Affiliation(s)
- Maximo J Marin
- Department of Pathology, Immunology & Laboratory Medicine, University of Florida, Gainesville, Florida, USA
| | | | - Allison B Chambliss
- Department of Pathology & Laboratory Medicine, University of California Los Angeles, Los Angeles, California, USA
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Inada Y, Sonoda M, Mizuno Y, Yamamura K, Motomura Y, Takuma A, Murata K, Furuno K, Tezuka J, Sakai Y, Ohga S, Kishimoto J, Hosaka K, Sakata S, Hara T. CD14 down-modulation as a real-time biomarker in Kawasaki disease. Clin Transl Immunology 2023; 13:e1482. [PMID: 38162960 PMCID: PMC10757666 DOI: 10.1002/cti2.1482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 11/19/2023] [Accepted: 12/18/2023] [Indexed: 01/03/2024] Open
Abstract
Objectives The objectives of this study were to investigate the pathophysiology of Kawasaki disease (KD) from immunological and oxidative stress perspectives, and to identify real-time biomarkers linked to innate immunity and oxidative stress in KD. Methods We prospectively enrolled 85 patients with KD and 135 patients with diverse conditions including immune, infectious and non-infectious diseases for this investigation. Flow cytometry was used to analyse the surface expression of CD14, CD38 and CD62L on monocytes, along with a quantitative assessment of CD14 down-modulation. Additionally, oxidative stress levels were evaluated using derivatives of reactive oxygen metabolites (d-ROMs) and antioxidant capacity measured by a free radical elective evaluator system. Results During the acute phase of KD, we observed a prominent CD14 down-modulation on monocytes, reflecting the indirect detection of circulating innate immune molecular patterns. Moreover, patients with KD showed a significantly higher CD14 down-modulation compared with infectious and non-infectious disease controls. Notably, the surface expression of CD14 on monocytes was restored concurrently with responses to intravenous immunoglobulin and infliximab treatment in KD. Furthermore, d-ROM levels in patients with KD were significantly elevated compared with patients with infectious and non-infectious diseases. Following intravenous immunoglobulin treatment, oxidative stress levels decreased in patients with KD. Conclusion Monitoring CD14 down-modulation on monocytes in real-time is a valuable strategy for assessing treatment response, distinguishing KD relapse from concomitant infections and selecting second-line therapy after IVIG treatment in KD patients. The interplay between inflammation and oxidative stress likely plays a crucial role in the development of KD.
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Affiliation(s)
- Yutaro Inada
- Kawasaki Disease CenterFukuoka Children's HospitalFukuokaJapan
| | - Motoshi Sonoda
- Department of Hematology and ImmunologyFukuoka Children's HospitalFukuokaJapan
- Department of Pediatrics, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Yumi Mizuno
- Kawasaki Disease CenterFukuoka Children's HospitalFukuokaJapan
| | - Kenichiro Yamamura
- Department of Cardiology and Intensive CareFukuoka Children's HospitalFukuokaJapan
| | - Yoshitomo Motomura
- Department of Pediatrics, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Aoba Takuma
- Kawasaki Disease CenterFukuoka Children's HospitalFukuokaJapan
| | - Kenji Murata
- Kawasaki Disease CenterFukuoka Children's HospitalFukuokaJapan
| | - Kenji Furuno
- Kawasaki Disease CenterFukuoka Children's HospitalFukuokaJapan
| | - Junichiro Tezuka
- Department of Allergy and Respiratory MedicineFukuoka Children's HospitalFukuokaJapan
| | - Yasunari Sakai
- Department of Pediatrics, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Shouichi Ohga
- Department of Pediatrics, Graduate School of Medical SciencesKyushu UniversityFukuokaJapan
| | - Junji Kishimoto
- Department of Research and Development of Next Generation Medicine, Faculty of Medical SciencesKyushu UniversityFukuokaJapan
| | - Koki Hosaka
- Department of Clinical LaboratoryFukuoka Children's HospitalFukuokaJapan
| | - Satomi Sakata
- Department of Clinical LaboratoryFukuoka Children's HospitalFukuokaJapan
| | - Toshiro Hara
- Kawasaki Disease CenterFukuoka Children's HospitalFukuokaJapan
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Wei J, Zhang Y, Li H, Wang F, Yao S. Toll-like receptor 4: A potential therapeutic target for multiple human diseases. Biomed Pharmacother 2023; 166:115338. [PMID: 37595428 DOI: 10.1016/j.biopha.2023.115338] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 08/14/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023] Open
Abstract
The immune response plays a pivotal role in the pathogenesis of diseases. Toll-like receptor 4 (TLR4), as an intrinsic immune receptor, exhibits widespread in vivo expression and its dysregulation significantly contributes to the onset of various diseases, encompassing cardiovascular disorders, neoplastic conditions, and inflammatory ailments. This comprehensive review centers on elucidating the architectural and distributive characteristics of TLR4, its conventional signaling pathways, and its mode of action in diverse disease contexts. Ultimately, this review aims to propose novel avenues and therapeutic targets for clinical intervention.
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Affiliation(s)
- Jinrui Wei
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Yan Zhang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Haopeng Li
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Fuquan Wang
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China
| | - Shanglong Yao
- Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Institute of Anesthesia and Critical Care Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China; Key Laboratory of Anesthesiology and Resuscitation (Huazhong University of Science and Technology), Ministry of Education, China.
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11
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Bakaros E, Voulgaridi I, Paliatsa V, Gatselis N, Germanidis G, Asvestopoulou E, Alexiou S, Botsfari E, Lygoura V, Tsachouridou O, Mimtsoudis I, Tseroni M, Sarrou S, Mouchtouri VA, Dadouli K, Kalala F, Metallidis S, Dalekos G, Hadjichristodoulou C, Speletas M. Innate Immune Gene Polymorphisms and COVID-19 Prognosis. Viruses 2023; 15:1784. [PMID: 37766191 PMCID: PMC10537595 DOI: 10.3390/v15091784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/19/2023] [Accepted: 08/19/2023] [Indexed: 09/29/2023] Open
Abstract
COVID-19 is characterized by a heterogeneous clinical presentation and prognosis. Risk factors contributing to the development of severe disease include old age and the presence of comorbidities. However, the genetic background of the host has also been recognized as an important determinant of disease prognosis. Considering the pivotal role of innate immunity in the control of SARS-CoV-2 infection, we analyzed the possible contribution of several innate immune gene polymorphisms (including TLR2-rs5743708, TLR4-rs4986790, TLR4-rs4986791, CD14-rs2569190, CARD8-rs1834481, IL18-rs2043211, and CD40-rs1883832) in disease severity and prognosis. A total of 249 individuals were enrolled and further divided into five (5) groups, according to the clinical progression scale provided by the World Health Organization (WHO) (asymptomatic, mild, moderate, severe, and critical). We identified that elderly patients with obesity and/or diabetes mellitus were more susceptible to developing pneumonia and respiratory distress syndrome after SARS-CoV-2 infection, while the IL18-rs1834481 polymorphism was an independent risk factor for developing pneumonia. Moreover, individuals carrying either the TLR2-rs5743708 or the TLR4-rs4986791 polymorphisms exhibited a 3.6- and 2.5-fold increased probability for developing pneumonia and a more severe disease, respectively. Our data support the notion that the host's genetic background can significantly affect COVID-19 clinical phenotype, also suggesting that the IL18-rs1834481, TLR2-rs5743708, and TLR4-rs4986791 polymorphisms may be used as molecular predictors of COVID-19 clinical phenotype.
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Affiliation(s)
- Evangelos Bakaros
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Ioanna Voulgaridi
- Laboratory of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 41222 Larissa, Greece; (I.V.); (V.A.M.); (K.D.); (C.H.)
| | - Vassiliki Paliatsa
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Nikolaos Gatselis
- Department of Medicine and Research Laboratory of Internal Medicine, National Expertise Center of Greece in Autoimmune Liver Diseases, Full Member of the European Reference Network on Hepatological Diseases (ERN RARE-LIVER), General University Hospital of Larissa, 41110 Larissa, Greece; (N.G.); (V.L.); (G.D.)
| | - Georgios Germanidis
- First Internal Medicine Department, Infectious Diseases Division, AHEPA Hospital, Medical School, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece; (G.G.); (O.T.); (I.M.); (S.M.)
| | - Evangelia Asvestopoulou
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Stamatia Alexiou
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Elli Botsfari
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Vasiliki Lygoura
- Department of Medicine and Research Laboratory of Internal Medicine, National Expertise Center of Greece in Autoimmune Liver Diseases, Full Member of the European Reference Network on Hepatological Diseases (ERN RARE-LIVER), General University Hospital of Larissa, 41110 Larissa, Greece; (N.G.); (V.L.); (G.D.)
| | - Olga Tsachouridou
- First Internal Medicine Department, Infectious Diseases Division, AHEPA Hospital, Medical School, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece; (G.G.); (O.T.); (I.M.); (S.M.)
| | - Iordanis Mimtsoudis
- First Internal Medicine Department, Infectious Diseases Division, AHEPA Hospital, Medical School, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece; (G.G.); (O.T.); (I.M.); (S.M.)
| | - Maria Tseroni
- National Public Health Organization, 15123 Athens, Greece;
| | - Styliani Sarrou
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Varvara A. Mouchtouri
- Laboratory of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 41222 Larissa, Greece; (I.V.); (V.A.M.); (K.D.); (C.H.)
| | - Katerina Dadouli
- Laboratory of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 41222 Larissa, Greece; (I.V.); (V.A.M.); (K.D.); (C.H.)
| | - Fani Kalala
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
| | - Simeon Metallidis
- First Internal Medicine Department, Infectious Diseases Division, AHEPA Hospital, Medical School, Aristotle University of Thessaloniki, 54636 Thessaloniki, Greece; (G.G.); (O.T.); (I.M.); (S.M.)
| | - George Dalekos
- Department of Medicine and Research Laboratory of Internal Medicine, National Expertise Center of Greece in Autoimmune Liver Diseases, Full Member of the European Reference Network on Hepatological Diseases (ERN RARE-LIVER), General University Hospital of Larissa, 41110 Larissa, Greece; (N.G.); (V.L.); (G.D.)
| | - Christos Hadjichristodoulou
- Laboratory of Hygiene and Epidemiology, Faculty of Medicine, University of Thessaly, 41222 Larissa, Greece; (I.V.); (V.A.M.); (K.D.); (C.H.)
| | - Matthaios Speletas
- Department of Immunology & Histocompatibility, Faculty of Medicine, University of Thessaly, 41500 Larissa, Greece; (E.B.); (V.P.); (E.A.); (S.A.); (E.B.); (S.S.); (F.K.)
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12
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Liqiang S, Fang-Hui L, Minghui Q, Yanan Y, Haichun C. Free fatty acids and peripheral blood mononuclear cells (PBMC) are correlated with chronic inflammation in obesity. Lipids Health Dis 2023; 22:93. [PMID: 37403139 DOI: 10.1186/s12944-023-01842-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/03/2023] [Indexed: 07/06/2023] Open
Abstract
Obesity-related chronic inflammation is closely related to the ability of immune cells to adapt to the body's needs, research has shown that excess FAs can further activate pro-inflammatory transcription factors in the nucleus by interacting with various receptors such as CD36 and TLR4, thereby affecting the inflammatory state of cells. However, how the profile of various fatty acids in the blood of obese individuals is associated with chronic inflammation remains unclear. OBJECTIVE The biomarkers associated with obesity were identified from 40 fatty acids (FAs) in the blood, and analyze the relationship between the biomarkers and chronic inflammation. Furthermore, by analyzing the difference in the expression of CD36, TLR4 and NF-κB p65 in peripheral blood mononuclear cells (PBMC) between obese and standard weight people, understand that immunophenotype PBMC is associated with chronic inflammation. METHODS This study is a cross-sectional study. Participants were recruited from the Yangzhou Lipan weight loss training camp from May 2020 to July 2020. The sample size was 52 individuals, including 25 in the normal weight group and 27 in the obesity group. Individuals with obesity and controls of normal weight were recruited to identify biomarkers associated with obesity from 40 fatty acids in the blood; correlation analysis was conducted between the screened potential biomarkers FAs and the chronic inflammation index hs-CRP to identify FA biomarkers associated with chronic inflammation. Changes in the fatty acid receptor CD36, inflammatory receptor TLR4, and inflammatory nuclear transcription factor NF-κB p65 in PBMC subsets were used to further test the relationship between fatty acids and the inflammatory state in individuals with obesity. RESULTS 23 potential FA biomarkers for obesity were screened, eleven of the potential obesity biomarkers were also significantly related to hs-CRP. Compared to the control group, in monocytes the obesity group expressed higher TLR4, CD36, and NF-κB p65 in lymphocytes, the obesity group expressed higher TLR4 and CD36; and in granulocytes the obesity group expressed higher CD36. CONCLUSION Blood FAs are associated with obesity and are associated with chronic inflammation through increased CD36, TLR4, and NF-κB p65 in monocytes.
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Affiliation(s)
- Su Liqiang
- Key Lab of Aquatic Sports Training Monitoring and Intervention of General Administration of Sport of China, Physical Education College, Jiangxi Normal University, Nanchang, 330022, Jiangxi, China
| | - Li Fang-Hui
- School of Sport Sciences, Nanjing Normal University, Nanjing, 210023, Jiangsu, China
| | - Quan Minghui
- School of Kinesiology, Shanghai University of Sport, Shanghai, 200438, China
| | - Yang Yanan
- Key Lab of Aquatic Sports Training Monitoring and Intervention of General Administration of Sport of China, Physical Education College, Jiangxi Normal University, Nanchang, 330022, Jiangxi, China
| | - Chen Haichun
- Key Lab of Aquatic Sports Training Monitoring and Intervention of General Administration of Sport of China, School of Physical Education and Sport Science, Fujian Normal University, Fuzhou, 350108, Fujian, China.
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13
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Mabrey FL, Nian H, Yu C, Barnes EM, Malhotra U, Mikacenic C, Goldstein J, O'Mahony DS, Garcia-Diaz J, Finn P, Voelker K, Morrell ED, Self WH, Becker PM, Martin TR, Wurfel MM. Phase 2, randomized, double-blind, placebo-controlled multi-center trial of the clinical and biological effects of anti-CD14 treatment in hospitalized patients with COVID-19 pneumonia. EBioMedicine 2023; 93:104667. [PMID: 37336058 DOI: 10.1016/j.ebiom.2023.104667] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Revised: 06/05/2023] [Accepted: 06/05/2023] [Indexed: 06/21/2023] Open
Abstract
BACKGROUND Severe COVID-19 is associated with innate immunopathology, and CD14, a proximal activator of innate immunity, has been suggested as a potential therapeutic target. METHODS We conducted the COVID-19 anti-CD14 Treatment Trial (CaTT), a Phase II randomized, double-blind, placebo-controlled trial at 5 US-sites between April 12, 2021 and November 30, 2021 (NCT04391309). Hospitalized adults with COVID-19 requiring supplemental oxygen (<30 LPM) were randomized 1:1 to receive 4 daily doses of intravenous IC14, an anti-CD14 monoclonal antibody, or placebo. All participants received remdesivir. The primary outcome was time-to-resolution of illness, defined as improvement on the 8-point NIH-Ordinal COVID-19 Scale to category ≤3. Secondary endpoints were safety and exploratory endpoints were pro-inflammatory and antiviral mediators in serum on days 0-5 & 7. The trial was stopped after 40 patients were randomized and treated due to slow enrollment. FINDINGS 40 participants were randomized and treated with IC14 (n = 20) or placebo (n = 20). The median time-to-recovery was 6 days (95% CI, 5-11) in the IC14 group vs. 5 days (95% CI, 4-10) in the Placebo group (recovery rate ratio: 0.77 (95% CI, 0.40, 1.48) (log-rank p = 0.435). The number of adverse events was similar in each group, and no IC14-attributable secondary infections occurred. In repeated-measures mixed-effects analyses, IC14 treatment increased serum sCD14 concentrations, an expected pharmacodynamic effect. Pre-planned, exploratory analyses suggested that IC14 treatment decreased the trajectories of circulating MIP-1β and TNF-α. INTERPRETATION IC14 treatment did not improve time-to-resolution of illness in hypoxemic patients with COVID-19 in this small trial. Results of exploratory analyses suggested IC14 had biologic effects that warrant future clinical investigation. FUNDING National Institute of Allergy and Infectious Diseases.
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Affiliation(s)
- F Linzee Mabrey
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Hui Nian
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Chang Yu
- Department of Biostatistics, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Elizabeth M Barnes
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Uma Malhotra
- Benaroya Research Institute at Virginia Mason, Seattle, WA, USA; Virginia Mason Franciscan Health, Seattle, WA, USA
| | - Carmen Mikacenic
- Benaroya Research Institute at Virginia Mason, Seattle, WA, USA; Virginia Mason Franciscan Health, Seattle, WA, USA
| | - Julia Goldstein
- National Institute of Allergy and Infectious Diseases, National Institute of Health, USA
| | - D Shane O'Mahony
- Swedish Center for Research and Innovation, Swedish Medical Center, Seattle, WA, USA
| | | | - Patricia Finn
- University of Illinois Hospital and Health Sciences System, University of Illinois College of Medicine, Chicago, IL, USA
| | - Kirk Voelker
- Sarasota Memorial Healthcare System, Sarasota, FL, USA
| | - Eric D Morrell
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Wesley H Self
- Vanderbilt Institute for Clinical and Translational Research and Department of Emergency Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Patrice M Becker
- National Institute of Allergy and Infectious Diseases, National Institute of Health, USA
| | - Thomas R Martin
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA
| | - Mark M Wurfel
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, University of Washington, Seattle, WA, USA.
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14
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Sanjurjo L, Castelblanco E, Julve J, Villalmanzo N, Téllez É, Ramirez-Morros A, Alonso N, Mauricio D, Sarrias MR. Contribution of Elevated Glucose and Oxidized LDL to Macrophage Inflammation: A Role for PRAS40/Akt-Dependent Shedding of Soluble CD14. Antioxidants (Basel) 2023; 12:antiox12051083. [PMID: 37237950 DOI: 10.3390/antiox12051083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
Atherosclerosis, a process in which macrophages play a key role, is accelerated in diabetes. Elevated concentrations of serum-oxidized low-density lipoproteins (oxLDL) represent a common feature of both conditions. The main goal of this study was to determine the contribution of oxLDL to the inflammatory response of macrophages exposed to diabetic-mimicking conditions. THP1 cells and peripheral blood monocytes purified from non-diabetic healthy donors were cultured under normal (5 mM) or high glucose (HG) (15 mM) with oxLDL. Then, foam cell formation, expression of CD80, HLADR, CD23, CD206, and CD163, as well as toll-like receptor 4 (TLR4) and co-receptors CD36 and CD14 (both at the cell surface and soluble (sCD14)), and inflammatory mediators' production were measured by flow cytometry, RT-qPCR, or ELISA. Additionally, serum sCD14 was determined in subjects with subclinical atherosclerosis with and without diabetes by ELISA. Our results showed that oxLDL-mediated intracellular lipid accumulation via CD36 increased under HG and that HG + oxLDL enhanced TNF, IL1B, and IL8, and decreased IL10. Moreover, TLR4 was upregulated in macrophages under HG and monocytes of subjects with diabetes and atherosclerosis. Interestingly, HG-oxLDL upregulated CD14 gene expression, although its total cellular protein abundance remained unaltered. sCD14 shedding via PRAS40/Akt-dependent mechanisms, with pro-inflammatory activity, was significantly increased in cultured macrophages and plasma from subjects with diabetes and subclinical atherosclerosis or hypercholesterolemia. Our data support an enhanced synergistic pro-inflammatory effect induced by HG and oxLDL in cultured human macrophages, possibly explained by increased sCD14 shedding.
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Affiliation(s)
- Lucía Sanjurjo
- Innate Immunity Group, Health Sciences Research Institute Germans Trias i Pujol (IGTP), 08916 Badalona, Spain
| | - Esmeralda Castelblanco
- Division of Endocrinology, Metabolism and Lipid Research, Department of Internal Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
- Unitat de Suport a la Recerca Barcelona, Institut Universitari d'Investigació en Atenció Primària Jordi Gol i Gurina, 08007 Barcelona, Spain
| | - Josep Julve
- Endocrinology, Diabetes and Nutrition Group, Institut de Recerca de l'Hospital de la Santa Creu i Sant Pau (IRHSCSP), 08041 Barcelona, Spain
- Centre for Biomedical Research on Diabetes and Associated Metabolic Diseases (CIBERDEM), ISCIII, 28029 Madrid, Spain
| | - Nuria Villalmanzo
- Department of Endocrinology and Nutrition, Health Sciences Research Institute and University Hospital Germans Trias i Pujol, 08916 Badalona, Spain
| | - Érica Téllez
- Innate Immunity Group, Health Sciences Research Institute Germans Trias i Pujol (IGTP), 08916 Badalona, Spain
| | - Anna Ramirez-Morros
- Unitat de Suport a la Recerca Barcelona, Institut Universitari d'Investigació en Atenció Primària Jordi Gol i Gurina, 08007 Barcelona, Spain
- Gerència Territorial de la Catalunya Central, Institut Català de la Salut, 08272 Sant Fruitós de Bages, Spain
| | - Núria Alonso
- Centre for Biomedical Research on Diabetes and Associated Metabolic Diseases (CIBERDEM), ISCIII, 28029 Madrid, Spain
- Department of Endocrinology and Nutrition, Health Sciences Research Institute and University Hospital Germans Trias i Pujol, 08916 Badalona, Spain
| | - Dídac Mauricio
- Unitat de Suport a la Recerca Barcelona, Institut Universitari d'Investigació en Atenció Primària Jordi Gol i Gurina, 08007 Barcelona, Spain
- Centre for Biomedical Research on Diabetes and Associated Metabolic Diseases (CIBERDEM), ISCIII, 28029 Madrid, Spain
- Department of Endocrinology and Nutrition, Hospital de la Santa Creu i Sant Pau and Sant Pau Biomedical Research Institute, 08041 Barcelona, Spain
- Faculty of Medicine, University of Vic-Central University of Catalonia, 08500 Vic, Spain
| | - Maria-Rosa Sarrias
- Innate Immunity Group, Health Sciences Research Institute Germans Trias i Pujol (IGTP), 08916 Badalona, Spain
- Centre for Biomedical Research on Liver and Digestive Diseases (CIBEREHD), ISCIII, 28029 Madrid, Spain
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15
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Ahmed MSU, Lord BD, Adu Addai B, Singhal SK, Gardner K, Salam AB, Ghebremedhin A, White J, Mahmud I, Martini R, Bedi D, Lin H, Jones JD, Karanam B, Dean-Colomb W, Grizzle W, Wang H, Davis M, Yates CC. Immune Profile of Exosomes in African American Breast Cancer Patients Is Mediated by Kaiso/THBS1/CD47 Signaling. Cancers (Basel) 2023; 15:cancers15082282. [PMID: 37190208 DOI: 10.3390/cancers15082282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 04/02/2023] [Accepted: 04/04/2023] [Indexed: 05/17/2023] Open
Abstract
African American (AA) women with breast cancer are more likely to have higher inflammation and a stronger overall immune response, which correlate with poorer outcomes. In this report, we applied the nanostring immune panel to identify differences in inflammatory and immune gene expression by race. We observed a higher expression of multiple cytokines in AA patients compared to EA patients, with high expression of CD47, TGFB1, and NFKB1 associated with the transcriptional repressor Kaiso. To investigate the mechanism associated with this expression pattern, we observed that Kaiso depletion results in decreased expression of CD47, and its ligand SIRPA. Furthermore, Kaiso appears to directly bind to the methylated sequences of the THBS1 promotor and repress gene expression. Similarly, Kaiso depletion attenuated tumor formation in athymic nude mice, and these Kaiso-depleted xenograft tissues showed significantly higher phagocytosis and increased infiltration of M1 macrophages. In vitro validation using MCF7 and THP1 macrophages treated with Kaiso-depleted exosomes showed a reduced expression of immune-related markers (CD47 and SIRPA) and macrophage polarization towards the M1 phenotype compared to MCF7 cells treated with exosomes isolated from high-Kaiso cells. Lastly, analysis of TCGA breast cancer patient data demonstrates that this gene signature is most prominent in the basal-like subtype, which is more frequently observed in AA breast cancer patients.
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Affiliation(s)
- Md Shakir Uddin Ahmed
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
- Bangladesh Council of Scientific and Industrial Research, Dhaka 1205, Bangladesh
| | - Brittany D Lord
- Department of Genetics, University of Georgia, Athens, GA 30602, USA
| | - Benjamin Adu Addai
- School of Veterinary Medicine, Tuskegee University, Tuskegee, AL 36088, USA
| | - Sandeep K Singhal
- Department of Pathology, School of Medicine and Health Sciences, University of North Dakota, Grand Forks, ND 58202, USA
- Department of Biomedical Engineering, School of Electrical Engineering and Computer Science, University of North Dakota, Grand Forks, ND 58202, USA
| | - Kevin Gardner
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Ahmad Bin Salam
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Anghesom Ghebremedhin
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Jason White
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Iqbal Mahmud
- Department of Pathology, Immunology and Laboratory Medicine, College of Medicine, University of Florida, Gainesville, FL 32610, USA
| | - Rachel Martini
- Department of Surgery, Weill Cornell Medicine, New York, NY 10065, USA
| | - Deepa Bedi
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Huixian Lin
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Jacqueline D Jones
- Department of Biological and Environmental Sciences, Troy University, Troy, AL 36082, USA
| | | | - Windy Dean-Colomb
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
- Piedmont Oncology-Newnan, Newnan, GA 30265, USA
| | - William Grizzle
- Department of Pathology, School of Medicine, The University of Alabama at Birmingham, Birmingham, AL 35233, USA
| | - Honghe Wang
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
| | - Melissa Davis
- Department of Surgery, Weill Cornell Medicine, New York, NY 10065, USA
| | - Clayton C Yates
- Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL 36088, USA
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
- Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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16
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Huang S, Tan YQ, Zhou G. Aberrant Activation of the STING-TBK1 Pathway in γδ T Cells Regulates Immune Responses in Oral Lichen Planus. Biomedicines 2023; 11:biomedicines11030955. [PMID: 36979934 PMCID: PMC10046253 DOI: 10.3390/biomedicines11030955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/09/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Oral lichen planus (OLP) is a chronic T cell-mediated inflammatory disease. Interferon (IFN)-γ has been suggested to be vital for the OLP immune responses. A prominent innate-like lymphocyte subset, γδ T cells, span the innate-adaptive continuum and exert immune effector functions by producing a wide spectrum of cytokines, including IFN-γ. The involvement and mechanisms of γδ T cells in the pathogenesis of OLP remain obscure. The expression of γδ T cells in lesion tissues and in the peripheral blood of OLP patients was determined via flow cytometry and immunohistochemistry, respectively. Human leukocyte antigen-DR (HLA-DR), cluster of differentiation (CD) 69, Toll-like receptors (TLRs), natural killer group 2, member D (NKG2D) and IFN-γ were detected in γδ T cells of OLP patients using flow cytometry. Additionally, the involvement of stimulator of the interferon genes (STING)-TANK-binding kinase 1 (TBK1) pathway in γδ T cells was evaluated by multi-color immunofluorescence. Western blotting was employed to investigate the regulatory mechanisms of γδ T cells in OLP. γδ T cells were significantly upregulated in the lesion tissues, whereas their peripheral counterparts were downregulated in OLP patients. Meanwhile, increased frequencies of local CD69+ and NKG2D+ γδ T cells and peripheral HLA-DR+ and TLR4+ γδ T cells were detected in OLP. Furthermore, significant co-localization of STING and TBK1 was observed in the γδ T cells of OLP lesions. In addition, enhanced IFN-γ and interleukin (IL)-17A were positively associated with the activated STING-TBK1 pathway and γδ T cells in OLP. Taken together, the upregulated STING-TBK1 pathway in activated γδ T cells might participate in the regulation of immune responses in OLP.
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Affiliation(s)
- Shan Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Ya-Qin Tan
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Gang Zhou
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) & Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
- Department of Oral Medicine, School and Hospital of Stomatology, Wuhan University, Wuhan 430079, China
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Presepsin as a diagnostic and prognostic biomarker of severe bacterial infections and COVID-19. Sci Rep 2023; 13:3814. [PMID: 36882572 PMCID: PMC9990570 DOI: 10.1038/s41598-023-30807-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 03/01/2023] [Indexed: 03/09/2023] Open
Abstract
We aimed to develop presepsin as a marker of diagnosis of severe infections of either bacterial and viral origin. The derivation cohort was recruited from 173 hospitalized patients with acute pancreatitis or post-operative fever or infection suspicion aggravated by at least one sign of the quick sequential organ failure assessment (qSOFA). The first validation cohort was recruited from 57 admissions at the emergency department with at least one qSOFA sign and the second validation cohort from 115 patients with COVID-19 pneumonia. Presepsin was measured in plasma by the PATHFAST assay. Concentrations more than 350 pg/ml had sensitivity 80.2% for sepsis diagnosis in the derivation cohort (adjusted odds ratio 4.47; p < 0.0001). In the derivation cohort, sensitivity for 28-day mortality prognosis was 91.5% (adjusted odds ratio 6.82; p: 0.001). Concentrations above 350 pg/ml had sensitivity 93.3% for the diagnosis of sepsis in the first validation cohort; this was 78.3% in the second validation cohort of COVID-19 aiming at the early diagnosis of acute respiratory distress syndrome necessitating mechanical ventilation. The respective sensitivity for 28-day mortality was 85.7% and 92.3%. Presepsin may be a universal biomarker for the diagnosis of severe infections of bacterial origin and prediction of unfavorable outcome.
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18
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Çevik-Aras H, Dafar A. Soluble LPS receptor CD14 is increased in saliva of patients with geographic tongue. Acta Odontol Scand 2023; 81:137-142. [PMID: 35802734 DOI: 10.1080/00016357.2022.2097305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
OBJECTIVES The soluble bacterial pattern recognition receptor, sCD14 augments inflammatory responses in oral cavity. The aim of the study was to investigate whether patients with geographic tongue (GT) with and without fissured tongue (FT) have impaired inflammatory regulation, manifesting as increased levels of sCD14 in the saliva. MATERIAL AND METHODS An enzyme-linked immunosorbent assay was used to measure the amount of sCD14 in whole and parotid saliva of patients diagnosed with GT (GT whole, n = 21; GT parotid, n = 23) and control subjects (GT whole, n = 25; GT parotid, n = 18). The levels of sCD14 were also evaluated according to our previous clinical assessment of GT based on the number of lesions detected on the tongue, as 'mild' (a single lesion), 'moderate' (2-5 lesions), or 'severe' (≥6 lesions). Diagnosis of FT was established when multiple grooves or fissures were observed on the dorsal and lateral surfaces of the tongue. RESULTS GT patients had significantly higher sCD14 levels in whole (p<.05) and parotid saliva (p<.001), compared with controls. GT patients with FT had significantly increased sCD14 levels only in parotid saliva. A gradual increase in sCD14 levels in parotid and unstimulated saliva was seen in GT patients with multiple tongue lesions compared with single lesions. CONCLUSIONS GT patients had increased sCD14 in both parotid and unstimulated saliva. sCD14 seems to increase local inflammatory responses, which suggests its involvement in the pathophysiology of GT.
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Affiliation(s)
- Hülya Çevik-Aras
- Department of Oral Medicine and Pathology, Institute of Odontology, University of Gothenburg, Goteborg, Sweden
| | - Amal Dafar
- Department of Oral Medicine and Pathology, Institute of Odontology, University of Gothenburg, Goteborg, Sweden.,Department of Oral and Maxillofacial Surgery, King Fahad General Hospital, Jeddah, Saudi Arabia
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19
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Gelevski D, Addy G, Rohrer M, Cohen C, Roderick A, Winter A, Carey J, Scalia J, Yerton M, Weber H, Doyle M, Parikh N, Kane G, Ellrodt A, Burke K, D'Agostino D, Sinani E, Yu H, Sherman A, Agosti J, Redlich G, Charmley P, Crowe D, Appleby M, Ziegelaar B, Hanus K, Li Z, Babu S, Nicholson K, Luppino S, Berry J, Baecher-Allan C, Paganoni S, Cudkowicz M. Safety and activity of anti-CD14 antibody IC14 (atibuclimab) in ALS: Experience with expanded access protocol. Muscle Nerve 2022; 67:354-362. [PMID: 36533976 DOI: 10.1002/mus.27775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 12/09/2022] [Accepted: 12/13/2022] [Indexed: 12/23/2022]
Abstract
INTRODUCTION/AIMS IC14 (atibuclimab) is a monoclonal anti-CD14 antibody. A previous phase 1 trial of 10 participants with amyotrophic lateral sclerosis (ALS) demonstrated initial safety of IC14 in an acute treatment setting. We provided long-term treatment with IC14 to individuals with ALS via an expanded access protocol (EAP) and documented target engagement, biomarker, safety, and disease endpoints. METHODS Participants received intravenous IC14 every 2 weeks. Consistent with United States Food and Drug Administration guidelines, participants were not eligible for clinical trials and the EAP was inclusive of a broad population. Whole blood and serum were collected to determine monocyte CD14 receptor occupancy (RO), IC14 levels, and antidrug antibodies. Ex vivo T-regulatory functional assays were performed in a subset of participants. RESULTS Seventeen participants received IC14 for up to 103 weeks (average, 30.1 weeks; range, 1 to 103 weeks). Treatment-emergent adverse events (TEAEs) were uncommon, mild, and self-limiting. There were 18 serious adverse events (SAEs), which were related to disease progression and unrelated or likely unrelated to IC14. Three participants died due to disease progression. Monocyte CD14 RO increased for all participants after IC14 infusion. One individual required more frequent dosing (every 10 days) to achieve over 80% RO. Antidrug antibodies were detected in only one participant and were transient, low titer, and non-neutralizing. DISCUSSION Administration of IC14 in ALS was safe and well-tolerated in this intermediate-size EAP. Measuring RO guided dosing frequency. Additional placebo-controlled trials are required to determine the efficacy of IC14 in ALS.
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Affiliation(s)
- Dario Gelevski
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Grace Addy
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Margot Rohrer
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Caroline Cohen
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Aimee Roderick
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Allison Winter
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Judith Carey
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Jennifer Scalia
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Megan Yerton
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Harli Weber
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Michael Doyle
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Neil Parikh
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Geli Kane
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Amy Ellrodt
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Katherine Burke
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Derek D'Agostino
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | | | - Hong Yu
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Alexander Sherman
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Jan Agosti
- Implicit Bioscience, Ltd, Brisbane, Australia
| | | | | | - David Crowe
- Implicit Bioscience, Ltd, Brisbane, Australia
| | | | | | - Katherine Hanus
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Zhenhua Li
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Suma Babu
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Katharine Nicholson
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Sarah Luppino
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - James Berry
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Clare Baecher-Allan
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Sabrina Paganoni
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States.,Department of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital, Harvard Medical School, Boston, Massachusetts, United States
| | - Merit Cudkowicz
- Department of Neurology, Sean M. Healey and AMG Center for ALS and the Neurological Clinical Research Institute, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States
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20
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Lu PY, Niu GJ, Hong PP, Wang JX. Lysyl Oxidase-like Protein Recognizes Viral Envelope Proteins and Bacterial Polysaccharides against Pathogen Infection via Induction of Expression of Antimicrobial Peptides. Viruses 2022; 14:v14092072. [PMID: 36146878 PMCID: PMC9500624 DOI: 10.3390/v14092072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Lysyl oxidases (LOXs) are copper-dependent monoamine oxidases, and they play critical roles in extracellular matrix (ECM) remodeling. The LOX and LOX-like (LOXL) proteins also have a variety of biological functions, such as development and growth regulation, tumor suppression, and cellular senescence. However, the functions of LOXLs containing repeated scavenger receptor cysteine-rich (SRCR) domains in immunity are rarely reported. In this study, we characterized the antiviral and antibacterial functions of a lysyl oxidase-like (LOXL) protein containing tandem SRCR domains in Marsupenaeus japonicus. The mRNA level of LoxL was significantly upregulated in the hemocytes and intestines of shrimp challenged using white spot syndrome virus (WSSV) or bacteria. After the knockdown of LoxL via RNA interference, WSSV replication and bacterial loads were apparently increased, and the survival rate of the shrimp decreased significantly, suggesting that LOXL functions against pathogen infection in shrimp. Mechanistically, LOXL interacted with the envelope proteins of WSSV or with lipopolysaccharide and peptidoglycan from bacteria in shrimp challenged using WSSV or bacteria, and it promoted the expression of a battery of antimicrobial peptides (AMPs) via the induction of Dorsal nuclear translocation against viral and bacterial infection. Moreover, LOXL expression was also positively regulated by Dorsal in the shrimp challenged by pathogens. These results indicate that, by acting as a pattern recognition receptor, LOXL plays vital roles in antiviral and antibacterial innate immunity by enhancing the expression of AMPs in shrimp.
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Affiliation(s)
- Peng-Yuan Lu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Guo-Juan Niu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Pan-Pan Hong
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao 266237, China
| | - Jin-Xing Wang
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Sciences, Shandong University, Qingdao 266237, China
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, China
- Correspondence:
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21
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Lei C, Li Y, Zhu X, Li H, Chang X. HMGB1/TLR4 induces autophagy and promotes neuroinflammation after intracerebral hemorrhage. Brain Res 2022; 1792:148003. [PMID: 35820449 DOI: 10.1016/j.brainres.2022.148003] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 07/03/2022] [Accepted: 07/06/2022] [Indexed: 11/02/2022]
Abstract
BACKGROUND AND PURPOSE Intracerebral hemorrhage (ICH) causes autophagy as well as inflammation; the latter is known to involve the high-mobility group box 1 protein (HMGB1)/Toll-like receptor 4 (TLR4) axis. Here we investigated whether this axis may help mediate both the autophagy and inflammation associated with ICH. METHODS ICH was induced by injecting autologous blood into Sprague-Dawley rats, followed in some cases by intracerebroventricular injection of short interfering RNA (siRNA) against HMGB1 or TLR4 at 6 h after ICH induction or by intraperitoneal injection of the autophagy inhibitor 3-methyladenine (3-MA) or autophagy activator rapamycin at 6, 24, and 48 h after ICH induction. Western blotting, immunohistochemistry or immunofluorescence was used to assess levels of HMGB1/TLR4 signaling pathway proteins as well as markers of autophagy (LC3B, Beclin1, Atg5) or inflammation (IL-1 beta, TNF-α). Numbers of apoptotic cells were determined using TUNEL staining. Changes in levels of these proteins were correlated with neurological deficits measured using the modified Neurological Severity Score. RESULTS ICH caused HMGB1 to translocate from the nucleus into the cytoplasm, and it up-regulated expression of TLR4 and myeloid differentiation factor 88 (MyD88), and induced neurological deficits. Administering siRNA against HMGB1 or TLR4 reversed this up-regulation. Levels of markers of autophagy (LC3B, Beclin1, Atg5) or inflammation (IL-1 beta, TNF-α) were significantly higher 72 h after ICH than at baseline, as were the numbers of TUNEL-positive cells. Administering siRNA against HMGB1 or TLR4 markedly alleviated inflammation, and autophagy, apoptosis, and neurological deficits. Similarly, administering autophagy inhibitor 3-MA alleviated inflammation, apoptosis, and neurological deficits. Conversely, autophagy activator rapamycin exacerbated these effects of ICH. CONCLUSIONS During the acute phase of ICH, the HMGB1/TLR4/MyD88 axis acts via autophagy to promote inflammation.
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Affiliation(s)
- Chunyan Lei
- From the Department of Neurology (C.L., Y.L., X. Z., H.L., X. C.), First Affiliated Hospital of Kunming Medical University, PR China.
| | - Yongyu Li
- From the Department of Neurology (C.L., Y.L., X. Z., H.L., X. C.), First Affiliated Hospital of Kunming Medical University, PR China
| | - Xiaoyan Zhu
- From the Department of Neurology (C.L., Y.L., X. Z., H.L., X. C.), First Affiliated Hospital of Kunming Medical University, PR China
| | - Haijiang Li
- From the Department of Neurology (C.L., Y.L., X. Z., H.L., X. C.), First Affiliated Hospital of Kunming Medical University, PR China
| | - Xiaolong Chang
- From the Department of Neurology (C.L., Y.L., X. Z., H.L., X. C.), First Affiliated Hospital of Kunming Medical University, PR China
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22
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Fibronectin Functions as a Selective Agonist for Distinct Toll-like Receptors in Triple-Negative Breast Cancer. Cells 2022; 11:cells11132074. [PMID: 35805158 PMCID: PMC9265717 DOI: 10.3390/cells11132074] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/17/2022] [Accepted: 06/25/2022] [Indexed: 02/04/2023] Open
Abstract
The microenvironment of tumors is characterized by structural changes in the fibronectin matrix, which include increased deposition of the EDA isoform of fibronectin and the unfolding of the fibronectin Type III domains. The impact of these structural changes on tumor progression is not well understood. The fibronectin EDA (FnEDA) domain and the partially unfolded first Type III domain of fibronectin (FnIII-1c) have been identified as endogenous damage-associated molecular pattern molecules (DAMPs), which induce innate immune responses by serving as agonists for Toll-Like Receptors (TLRs). Using two triple-negative breast cancer (TNBC) cell lines MDA-MB-468 and MDA-MB-231, we show that FnEDA and FnIII-1c induce the pro-tumorigenic cytokine, IL-8, by serving as agonists for TLR5 and TLR2, the canonical receptors for bacterial flagellin and lipoprotein, respectively. We also find that FnIII-1c is not recognized by MDA-MB-468 cells but is recognized by MDA-MB-231 cells, suggesting a cell type rather than ligand specific utilization of TLRs. As IL-8 plays a major role in the progression of TNBC, these studies suggest that tumor-induced structural changes in the fibronectin matrix promote an inflammatory microenvironment conducive to metastatic progression.
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23
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Plasma Soluble CD14 Subtype Levels Are Associated With Clinical Outcomes in Critically Ill Subjects With Coronavirus Disease 2019. Crit Care Explor 2021; 3:e0591. [PMID: 34909698 PMCID: PMC8663850 DOI: 10.1097/cce.0000000000000591] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
IMPORTANCE In bacterial sepsis, CD14 and its N-terminal fragment (soluble CD14 subtype, "Presepsin") have been characterized as markers of innate immune responses and emerging evidence has linked both to coronavirus disease 2019 pathophysiology. OBJECTIVES Our aim was to determine the relationship between the soluble form of CD14 and soluble CD14 subtype plasma levels, coronavirus disease 2019 status, and coronavirus disease 2019-related outcomes. DESIGN A prospective cohort study. SETTING ICUs in three tertiary hospitals in Seattle, WA. PARTICIPANTS Two-hundred four critically ill patients under investigation for coronavirus disease 2019. MAIN OUTCOMES AND MEASURES We measured plasma soluble CD14 and soluble CD14 subtype levels in samples collected upon admission. We tested for associations between biomarker levels and coronavirus disease 2019 status. We stratified by coronavirus disease 2019 status and tested for associations between biomarker levels and outcomes. RESULTS Among 204 patients, 102 patients had coronavirus disease 2019 and 102 patients did not. In both groups, the most common ICU admission diagnosis was respiratory failure or pneumonia and proportions receiving respiratory support at admission were similar. In regression analyses adjusting for age, sex, race/ethnicity, steroid therapy, comorbidities, and severity of illness, soluble CD14 subtype was 54% lower in coronavirus disease 2019 than noncoronavirus disease 2019 patients (fold difference, 0.46; 95% CI, 0.28-0.77; p = 0.003). In contrast to soluble CD14 subtype, soluble CD14 levels did not differ between coronavirus disease 2019 and noncoronavirus disease 2019 patients. In both coronavirus disease 2019 and noncoronavirus disease 2019, in analyses adjusting for age, sex, race/ethnicity, steroid therapy, and comorbidities, higher soluble CD14 subtype levels were associated with death (coronavirus disease 2019: adjusted relative risk, 1.21; 95% CI, 1.06-1.39; p = 0.006 and noncoronavirus disease 2019: adjusted relative risk, 1.19; 95% CI, 1.03-1.38; p = 0.017), shock, and fewer ventilator-free days. In coronavirus disease 2019 only, an increase in soluble CD14 subtype was associated with severe acute kidney injury (adjusted relative risk, 1.23; 95% CI, 1.05-1.44; p = 0.013). CONCLUSIONS Higher plasma soluble CD14 subtype is associated with worse clinical outcomes in critically ill patients irrespective of coronavirus disease 2019 status though soluble CD14 subtype levels were lower in coronavirus disease 2019 patients than noncoronavirus disease 2019 patients. Soluble CD14 subtype levels may have prognostic utility in coronavirus disease 2019.
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Mabrey FL, Morrell ED, Wurfel MM. TLRs in COVID-19: How they drive immunopathology and the rationale for modulation. Innate Immun 2021; 27:503-513. [PMID: 34806446 PMCID: PMC8762091 DOI: 10.1177/17534259211051364] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
COVID-19 is both a viral illness and a disease of immunopathology. Proximal events within the innate immune system drive the balance between deleterious inflammation and viral clearance. We hypothesize that a divergence between the generation of excessive inflammation through over activation of the TLR associated myeloid differentiation primary response (MyD88) pathway relative to the TIR-domain-containing adaptor-inducing IFN-β (TRIF) pathway plays a key role in COVID-19 severity. Both viral elements and damage associated host molecules act as TLR ligands in this process. In this review, we detail the mechanism for this imbalance in COVID-19 based on available evidence, and we discuss how modulation of critical elements may be important in reducing severity of disease.
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Affiliation(s)
- F Linzee Mabrey
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, 7284University of Washington, USA
| | - Eric D Morrell
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, 7284University of Washington, USA
| | - Mark M Wurfel
- Division of Pulmonary, Critical Care and Sleep Medicine, Department of Medicine, 7284University of Washington, USA
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TLR22-mediated activation of TNF-α-caspase-1/IL-1β inflammatory axis leads to apoptosis of Aeromonas hydrophila-infected macrophages. Mol Immunol 2021; 137:114-123. [PMID: 34242920 DOI: 10.1016/j.molimm.2021.06.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 04/28/2021] [Accepted: 06/29/2021] [Indexed: 02/08/2023]
Abstract
Toll-like receptors (TLRs) represent first line of host defence against microbes. Amongst different TLRs, TLR22 is exclusively expressed in non-mammalian vertebrates, including fish. The precise role of TLR22 in fish-immunity remains abstruse. Herein, we used headkidney macrophages (HKM) from Clarias gariepinus and deciphered its role in fish-immunity. Highest tlr22 expression was observed in the immunocompetent organ - headkidney; nonetheless expression in other tissues suggests its possible involvement in non-immune sites also. Aeromonas hydrophila infection up-regulates tlr22 expression in HKM. Our RNAi based study suggested TLR22 restricts intracellular survival of A. hydrophila. Inhibitor and RNAi studies further implicated TLR22 induces pro-inflammatory cytokines TNF-α and IL-1β. We observed heightened caspase-1 activity and our results suggest the role of TLR22 in activating TNF-α/caspase-1/IL-1β cascade leading to caspase-3 mediated apoptosis of A. hydrophila-infected HKM. We conclude, TLR22 plays critical role in immune-surveillance and triggers pro-inflammatory cytokines leading to caspase mediated HKM apoptosis and pathogen clearance.
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26
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Seclì L, Avalle L, Poggio P, Fragale G, Cannata C, Conti L, Iannucci A, Carrà G, Rubinetto C, Miniscalco B, Hirsch E, Poli V, Morotti A, De Andrea M, Turco E, Cavallo F, Fusella F, Brancaccio M. Targeting the extracellular HSP90 co-chaperone Morgana inhibits cancer cell migration and promotes anti-cancer immunity. Cancer Res 2021; 81:4794-4807. [PMID: 34193441 DOI: 10.1158/0008-5472.can-20-3150] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 05/18/2021] [Accepted: 06/28/2021] [Indexed: 11/16/2022]
Abstract
Heat shock protein 90 (HSP90) is secreted by cancer cells into the extracellular milieu, where it exerts pro-tumoral activities by activating extracellular substrate proteins and triggering autocrine signals through cancer cell surface receptors. Emerging evidence indicates that HSP90 co-chaperones are also secreted and may direct HSP90 extracellular activities. In this study, we found that the HSP90 co-chaperone Morgana is released by cancer cells and, in association with HSP90, induces cancer cell migration through TLR2, TLR4, and LRP1. In syngeneic cancer mouse models, a monoclonal antibody targeting Morgana extracellular activity reduced primary tumor growth via macrophage-dependent recruitment of CD8+ T lymphocytes, blocked cancer cell migration, and inhibited metastatic spreading. Overall, this data defines Morgana as a new player in the HSP90 extracellular interactome and suggests that Morgana may regulate HSP90 activity to promote cancer cell migration and suppress anti-tumor immunity.
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Affiliation(s)
- Laura Seclì
- Molecular Biotechnology and Health Sciences, University of Turin
| | - Lidia Avalle
- Molecular Biotechnology and Health Sciences, University of Turin
| | - Pietro Poggio
- Molecular Biotechnology and Health Sciences, University of Turin
| | - Giuseppe Fragale
- Molecular Biotechnology and Health Sciences, University of Turin
| | | | - Laura Conti
- Department of Molecular Biotechnology and Health Sciences - Molecular Biotechnology Center, University of Turin
| | - Andrea Iannucci
- CAAD-Center for Translational Research on Autoimmune and Allergic Diseases, University of Eastern Piedmont
| | - Giovanna Carrà
- Department of Clinical and Biological Sciences, University of Turin
| | | | | | - Emilio Hirsch
- Molecular Biotechnology Center, Department of Molecular Biotechnology and Health Sciences, University of Turin
| | - Valeria Poli
- Department of Molecular Biotechnology and Health Sciences, University of Turin
| | | | - Marco De Andrea
- Public Health and Pediatric Sciences, University of Turin, Medical School
| | - Emilia Turco
- Molecular Biotechnology and Health Sciences, University of Torino, Molecular Biotechnology Center
| | - Federica Cavallo
- Department of Molecular Biotechnology and Health Sciences, University of Turin
| | - Federica Fusella
- Molecular Biotechnology and Health Sciences, University of Turin
| | - Mara Brancaccio
- Molecular Biotechnology and Health Sciences, University of Turin
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27
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Li H, Xu J, Li X, Hu Y, Liao Y, Zhou W, Song Z. Anti-inflammatory activity of psoralen in human periodontal ligament cells via estrogen receptor signaling pathway. Sci Rep 2021; 11:8754. [PMID: 33888745 PMCID: PMC8062431 DOI: 10.1038/s41598-021-85145-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Accepted: 02/25/2021] [Indexed: 12/11/2022] Open
Abstract
Psoralen is one of the most effective ingredients extracted from the Chinese herb, Psoralea corylifolia L. Studies have found that psoralen has anti-inflammatory and estrogen-like effects; however, little research has been conducted to elucidate the mechanisms underlying these effects. Through the molecule docking assay, psoralen was found to have a better combination with ERα than ERβ. In human periodontal ligament cells, psoralen was found to upregulate the estrogen target genes (e.g., CTSD, PGR, TFF1) and down-regulate the expression of inflammatory cytokines (TNF-α, IL-1β, IL-6 and IL-8) stimulated by P. gingivalis LPS, as well as TLR4-IRAK4-NF-κb signaling pathway proteins. These effects were reversed by the ER antagonist ICI 182780. These results indicated that psoralen may exert anti-inflammatory effects as an agonist to ER, which could provide a theoretical basis for the use of psoralen for adjuvant therapy and prevention of periodontitis.
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Affiliation(s)
- Huxiao Li
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, 200011, China
| | - Jianrong Xu
- Academy of Integrative Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Department of Pharmacology and Chemical Biology, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Xiaotian Li
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, 200011, China
| | - Yi Hu
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, 200011, China
| | - Yue Liao
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.,College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, 200011, China
| | - Wei Zhou
- Laboratory of Oral Microbiota and Systemic Diseases, Shanghai Research Institute of Stomatology,Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China. .,College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, 200011, China.
| | - Zhongchen Song
- Department of Periodontology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China. .,College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology; Research Unit of Oral and Maxillofacial Regenerative Medicine, Chinese Academy of Medical Sciences, Shanghai, 200011, China.
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28
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Lee JG, Jaeger KE, Seki Y, Wei Lim Y, Cunha C, Vuchkovska A, Nelson AJ, Nikolai A, Kim D, Nishimura M, Knight KL, White P, Iwashima M. Human CD36 hi monocytes induce Foxp3 + CD25 + T cells with regulatory functions from CD4 and CD8 subsets. Immunology 2021; 163:293-309. [PMID: 33524161 DOI: 10.1111/imm.13316] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 12/31/2020] [Accepted: 01/22/2021] [Indexed: 12/12/2022] Open
Abstract
The fetal and neonatal immune systems are uniquely poised to generate tolerance to self, maternal and environmental antigens encountered in the womb and shortly after birth. However, the tolerogenic nature of fetal and neonatal immunity can be detrimental in the context of pathogens, leading to overwhelming bacterial infections or chronic viral infections. A variety of mechanisms contribute to fetal and neonatal tolerance, including a propensity to generate Foxp3+ regulatory T cells (Treg cells). However, the mechanism(s) of fetal Foxp3+ T-cell differentiation, the specific antigen-presenting cells required and factors that inhibit Treg generation after the neonatal period are poorly understood. Here, we demonstrate that a subset of CD14+ monocytes expressing the scavenger molecule, CD36, can generate CD4+ and CD8+ T cells that coexpress Foxp3 and T-bet from both umbilical cord blood. These Foxp3+ T-bet+ T cells potently suppress T-cell proliferation and ameliorate xenogeneic graft-versus-host disease. CD14+ CD36+ monocytes provide known Treg-inducing signals: membrane-bound transforming growth factor-beta and retinoic acid. Unexpectedly, adult peripheral blood monocytes are also capable of inducing Foxp3+ T cells from both cord blood and adult peripheral naïve T cells. The induction of Foxp3+ T cells in umbilical cord blood by monocytes was inhibited by the lymphoid fraction of adult peripheral blood cells. These studies highlight a novel immunoregulatory role of monocytes and suggest that antigen presentation by CD36hi monocytes may contribute to the peripheral development of Foxp3+ T-bet+ T cells with regulatory functions in both neonates and adults.
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Affiliation(s)
- Jessica G Lee
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Kathleen E Jaeger
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Yoichi Seki
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Yi Wei Lim
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Christina Cunha
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Aleksandra Vuchkovska
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Alexander J Nelson
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Anya Nikolai
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Dan Kim
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Michael Nishimura
- Department of Surgery, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Katherine L Knight
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Paula White
- Department of Obstetrics and Gynecology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
| | - Makio Iwashima
- Department of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA.,Van Kampen Cardio-Pulmonary Research Laboratory, Stritch School of Medicine, Loyola University Chicago, Maywood, IL, USA
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29
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Heinz R, Brandenburg S, Nieminen-Kelhä M, Kremenetskaia I, Boehm-Sturm P, Vajkoczy P, Schneider UC. Microglia as target for anti-inflammatory approaches to prevent secondary brain injury after subarachnoid hemorrhage (SAH). J Neuroinflammation 2021; 18:36. [PMID: 33516246 PMCID: PMC7847606 DOI: 10.1186/s12974-021-02085-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 01/14/2021] [Indexed: 12/11/2022] Open
Abstract
Background Microglia-driven cerebral spreading inflammation is a key contributor to secondary brain injury after SAH. Genetic depletion or deactivation of microglia has been shown to ameliorate neuronal cell death. Therefore, clinically feasible anti-inflammatory approaches counteracting microglia accumulation or activation are interesting targets for SAH treatment. Here, we tested two different methods of interference with microglia-driven cerebral inflammation in a murine SAH model: (i) inflammatory preconditioning and (ii) pharmacological deactivation. Methods 7T-MRI-controlled SAH was induced by endovascular perforation in four groups of C57Bl/6 mice: (i) Sham-operation, (ii) SAH naïve, (iii) SAH followed by inflammatory preconditioning (LPS intraperitoneally), and (iv) SAH followed by pharmacological microglia deactivation (colony-stimulating factor-1 receptor-antagonist PLX3397 intraperitoneally). Microglia accumulation and neuronal cell death (immuno-fluorescence), as well as activation status (RT-PCR for inflammation-associated molecules from isolated microglia) were recorded at day 4 and 14. Toll-like receptor4 (TLR4) status was analyzed using FACS. Results Following SAH, significant cerebral spreading inflammation occurred. Microglia accumulation and pro-inflammatory gene expression were accompanied by neuronal cell death with a maximum on day 14 after SAH. Inflammatory preconditioning as well as PLX3397-treatment resulted in significantly reduced microglia accumulation and activation as well as neuronal cell death. TLR4 surface expression in preconditioned animals was diminished as a sign for receptor activation and internalization. Conclusions Microglia-driven cerebral spreading inflammation following SAH contributes to secondary brain injury. Two microglia-focused treatment strategies, (i) inflammatory preconditioning with LPS and (ii) pharmacological deactivation with PLX3397, led to significant reduction of neuronal cell death. Increased internalization of inflammation-driving TLR4 after preconditioning leaves less receptor molecules on the cell surface, providing a probable explanation for significantly reduced microglia activation. Our findings support microglia-focused treatment strategies to overcome secondary brain injury after SAH. Delayed inflammation onset provides a valuable clinical window of opportunity. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02085-3.
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Affiliation(s)
- Rebecca Heinz
- Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Susan Brandenburg
- Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Melina Nieminen-Kelhä
- Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Irina Kremenetskaia
- Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany
| | - Philipp Boehm-Sturm
- Department of Experimental Neurology and Center for Stroke Research, Charité - Universitätsmedizin Berlin, Berlin, Germany.,NeuroCure Cluster of Excellence and Charité Core Facility 7T Experimental MRIs, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Peter Vajkoczy
- Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany.,Department of Experimental Neurology and Center for Stroke Research, Charité - Universitätsmedizin Berlin, Berlin, Germany.,Department of Neurosurgery, Charité - Universitätsmedizin Berlin, 10117, Berlin, Germany
| | - Ulf C Schneider
- Experimental Neurosurgery, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin, Humboldt-Universität zu Berlin, and Berlin Institute of Health, Berlin, Germany. .,Department of Neurosurgery, Charité - Universitätsmedizin Berlin, 10117, Berlin, Germany.
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30
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Wu Z, Liang J, Huang W, Jiang L, Paul C, Gao X, Alam P, Kanisicak O, Xu M, Wang Y. Immunomodulatory effects of mesenchymal stem cells for the treatment of cardiac allograft rejection. Exp Biol Med (Maywood) 2020; 246:851-860. [PMID: 33327780 DOI: 10.1177/1535370220978650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Heart transplantation continues to be the gold standard clinical intervention to treat patients with end-stage heart failure. However, there are major complications associated with this surgical procedure that reduce the survival prognosis of heart transplant patients, including allograft rejection, malignancies, infections, and other complications that arise from the use of broad-spectrum immunosuppression drugs. Recent studies have demonstrated the use of mesenchymal stem cells (MSCs) against allotransplantation rejection in both in vitro and in vivo settings due to their immunomodulatory properties. Therefore, utilization of MSCs provides new and exciting strategies to improve heart transplantation and potentially reduce the use of broad-spectrum immunosuppression drugs while alleviating allograft rejection. In this review, we will discuss the current research on the mechanisms of cardiac allograft rejection, the physiological and immunological characteristics of MSCs, the effects of MSCs on the immune system, and immunomodulation of heart transplantation by MSCs.
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Affiliation(s)
- Zhichao Wu
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Jialiang Liang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Wei Huang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Lin Jiang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Christian Paul
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Xiang Gao
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Perwez Alam
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Onur Kanisicak
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Meifeng Xu
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Yigang Wang
- Department of Pathology and Laboratory Medicine, College of Medicine, University of Cincinnati, Cincinnati, OH 45267, USA
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31
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Dong C, Jiang Z, Zhang X, Feng J, Wang L, Tian X, Xu P, Li X. Phylogeny of Slc15 family and response to Aeromonas hydrophila infection following Lactococcus lactis dietary supplementation in Cyprinus carpio. FISH & SHELLFISH IMMUNOLOGY 2020; 106:705-714. [PMID: 32846240 DOI: 10.1016/j.fsi.2020.08.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 08/06/2020] [Accepted: 08/11/2020] [Indexed: 06/11/2023]
Abstract
Solute carrier 15 family (Slc15) are membrane proteins that utilize the proton gradient and negative membrane protential for the transmembrane transporter of di-/tripeptide and peptide-mimetic molecules, in addition, they also play important roles in immunoreaction. In this study, 10 Slc15 genes were identified in the common carp genome database. Comparative genomics analysis showed considerable expansion of the Slc15 genes and verified the four-round whole genome duplication (WGD) event in common carp. Phylogenetic analysis revealed all Slc15 genes of common carp were clustered into orthologous groups indicating the highly conservative during evolution. Besides, the tissues and temporal expression examined by RT-PCR and qRT-PCR showed that most of the Slc15 genes had a narrow tissue distribution and exhibited tissue-specific expression patterns. Expression divergences were observed between these copies proving function divergence after the WGD. Then, we investigated the dietary supplementation effects of three Lactococcus lactis strains on the expression of Slc15 genes in common carp infected by A. hydrophila to find an effective way to treat aquatic diseases. Almost all of the Slc15 genes had an increased expression trend in the early post-challenge stage, and reached the highest expression level at 12h post-challenge. Then, the expression level showed a bluff descent at the last two stages and the expression level reached the lowest at 48 h post-challenge. Slc15 genes expression is actively up-regulated when stimulated by inflammatory factors, which can "amplify" immune signals, and improve the body's defense against foreign invasion in the early stage of the inflammatory response. So activation of the Slc15 genes may be an effective way for infectious disease treatment. As expected, three strains improved the expression of Slc15 genes variously compared with the control/infection groups. The strain 3 of L. lactis had a better induction of Slc15 genes compared with strain 1 and strain 2. It might be applied as a potential activation of Slc15 genes for disease treatment and adding befitting L. lactis may be a good way to protect aquatilia from bacillosis.
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Affiliation(s)
- Chuanju Dong
- College of Fishery, Henan Normal University, Xinxiang, 453007, China; Key Laboratory of Tropical&Subtropical Fishery Resource Application and Cultivation, Ministry of Agriculture, China; Pearl River Fisheries Research Institute CAFS, Guangdong, 510380, China.
| | - Zhou Jiang
- College of Fishery, Henan Normal University, Xinxiang, 453007, China
| | - Xianyao Zhang
- College of Fishery, Henan Normal University, Xinxiang, 453007, China
| | - Junchang Feng
- College of Fishery, Henan Normal University, Xinxiang, 453007, China
| | - Lei Wang
- College of Fishery, Henan Normal University, Xinxiang, 453007, China
| | - Xue Tian
- College of Fishery, Henan Normal University, Xinxiang, 453007, China
| | - Peng Xu
- College of Fishery, Henan Normal University, Xinxiang, 453007, China; State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China
| | - Xuejun Li
- College of Fishery, Henan Normal University, Xinxiang, 453007, China.
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32
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The immunosuppressive effect of the endocannabinoid system on the inflammatory phenotypes of macrophages and mesenchymal stromal cells: a comparative study. Pharmacol Rep 2020; 73:143-153. [PMID: 33026642 DOI: 10.1007/s43440-020-00166-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 09/22/2020] [Accepted: 09/25/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND The inflammatory sequence is the first phase of wound healing. Macrophages (MPhs) and mesenchymal stromal cells (MSCs) respond to an inflammatory microenvironment by adapting their functional activity, which polarizes them into the pro-inflammatory phenotypes M1 and MSC1. Prolongation of the inflammatory phase results in the formation of chronic wounds. The endocannabinoid system (ECS) possesses immunomodulatory properties that may impede this cellular phenotypic switch. METHODS We investigated the immunosuppressive influence of the endocannabinoids anandamide (AEA) and 2-arachidonoylglycerol (2-AG) on the M1 and MSC1 cytokine secretion. Lipopolysaccharides (LPS) were used as inflammagen to stimulate MPhs and MSCs. Both inflammatory phenotypes were co-exposed to AEA or 2-AG, the specific cannabinoid receptor CB2 agonist JWH-133 served as reference. The inflammatory responses were detected by CD80/163 immuno-labelling and by ELISA measures of secreted IL-6, IL-8, MIF, TNF-α, TGF-β, and VEGF. RESULTS M1 cells were found positive for CD80 expression and secreted less IL-6 and IL-8 than MSC1 cells, while both cell types produced similar amounts of MIF. TNF-α release was increased by M1, and growth factors were secreted by MSC1, only. Cannabinoid receptor ligands efficiently decreased the inflammatory response of M1, while their impact was less pronounced in MSC1. CONCLUSIONS The ECS down-regulated the inflammatory responses of MPhs and MSCs by decreasing the cytokine release upon LPS treatment, while CB2 appeared to be of particular importance. Hence, stimulating the ECS by manipulation of endo- or use of exogenous cannabinoids in vivo may constitute a potent therapeutic option against inflammatory disorders.
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33
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Narayanankutty A. Toll-like Receptors as a Novel Therapeutic Target for Natural Products Against Chronic Diseases. Curr Drug Targets 2020; 20:1068-1080. [PMID: 30806312 DOI: 10.2174/1389450120666190222181506] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 01/25/2019] [Accepted: 02/14/2019] [Indexed: 02/08/2023]
Abstract
Toll-like receptors (TLR) are one among the initial responders of the immune system which participate in the activation inflammatory processes. Several different types of TLR such as TLR2, TLR4, TLR7 and TLR9 have been identified in various cell types, each having distinct ligands like lipids, lipoproteins, nucleic acids and proteins. Though its prime concern is xenobiotic defences, TLR signalling has also recognized as an activator of inflammation and associated development of chronic degenerative disorders (CDDs) including obesity, type 2 diabetes mellitus (T2DM), fatty liver disease, cardiovascular and neurodegenerative disorders as well as various types of cancers. Numerous drugs are in use to prevent these disorders, which specifically inhibit different pathways associated with the development of CDDs. Compared to these drug targets, inhibition of TLR, which specifically responsible for the inflammatory insults has proven to be a better drug target. Several natural products have emerged as inhibitors of CDDs, which specifically targets TLR signalling, among these, many are in the clinical trials. This review is intended to summarize the recent progress on TLR association with CDDs and to list possible use of natural products, their combinations and their synthetic derivative in the prevention of TLR-driven CDD development.
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Affiliation(s)
- Arunaksharan Narayanankutty
- Post Graduate & Research Department of Zoology, St. Joseph's College (Autonomous), Devagiri, Calicut, Kerala, 680 555, India
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34
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Martin TR, Wurfel MM, Zanoni I, Ulevitch R. Targeting innate immunity by blocking CD14: Novel approach to control inflammation and organ dysfunction in COVID-19 illness. EBioMedicine 2020; 57:102836. [PMID: 32574958 PMCID: PMC7305752 DOI: 10.1016/j.ebiom.2020.102836] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/20/2020] [Accepted: 05/29/2020] [Indexed: 10/27/2022] Open
Abstract
The SARS-CoV-2 pandemic has produced an unprecedented rush to develop new therapies, ranging from immunizations and antivirals to host-directed therapies to dampen potentially deleterious host inflammatory responses. With a sense of urgency, many groups have proposed repurposing approved drugs for other indications that might be deployed rapidly to control the viral infection or improve host responses. However, many of these therapies are based on drug availability rather than on a rational understanding of important steps in pathogenesis, particularly in the lungs, that lead to critical illness and life-threatening acute respiratory failure. Here we propose that the viral infection initially triggers a profound activation of innate immunity in the lungs that generates a self-perpetuating cytokine storm affecting the entire body. Inhibiting key proximal points in innate immunity pathways is feasible and offers a science-based approach to improving outcomes in moderate to severe COVID-19 illness.
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Affiliation(s)
- Thomas R Martin
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington School of Medicine, Seattle, WA, United States.
| | - Mark M Wurfel
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Washington School of Medicine, Seattle, WA, United States
| | - Ivan Zanoni
- Division of Immunology, Division of Gastroenterology, Boston Children's Hospital, Harvard Medical School, Boston, MA,United States
| | - Richard Ulevitch
- Department of Immunology and Microbiology, Scripps Research, La Jolla, CA, United States
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35
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Yang Y, Hu Y, Zhou Y, Liang T, Tang H, Ju H, Shi Q, Fang H. Lys694Arg polymorphism leads to blunted responses to LPS by interfering TLR4 with recruitment of MyD88. Innate Immun 2020; 27:483-492. [PMID: 32513051 PMCID: PMC8504268 DOI: 10.1177/1753425920927479] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
TLR4 polymorphisms such as Asp299Gly and Thr399Ile related to Gram-negative sepsis have been reported to result in significantly blunted responsiveness to LPS. Our study group previously screened other TLR4 polymorphic variants by checking the NF-κB activation in comparison to wild type (WT) TLR4 in human embryonic kidney 293T cells. In this study, we found that the Lys694Arg (K694R) polymorphism reduced the activation of NF-κB, and the production of downstream inflammatory factors IL-1, TNF-α and IL-6, representing the K694R polymorphism, led to blunted responsiveness to LPS. Then, we examined the influence of the K694R polymorphism on total and cell-surface TLR4 expression by Western blotting and flow cytometry, respectively, but observed no differences between the K694R polymorphism and WT TLR4. We also used co-immunoprecipitation to determine the interaction of the K694R polymorphism and WT TLR4 with their co-receptor myeloid differentiation factor 2 (MD2) and their downstream signal adaptor MyD88. We found that K694R reduced the recruitment of MyD88 in TLR4 signalling but had no impact on the interaction with MD2.
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Affiliation(s)
- Yajie Yang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Yan Hu
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China
| | - Yile Zhou
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Tao Liang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Haihong Tang
- Department of Anaesthesiology, Jinshan Hospital, Fudan University, PR China
| | - Huihui Ju
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China
| | - Qiqing Shi
- Department of Anaesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, PR China
| | - Hao Fang
- Department of Anaesthesiology, Zhongshan Hospital, Fudan University, PR China.,Department of Anaesthesiology, Minhang Branch, Zhongshan Hospital, Fudan University, PR China
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36
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Miller RJ, Malfait AM, Miller RE. The innate immune response as a mediator of osteoarthritis pain. Osteoarthritis Cartilage 2020; 28:562-571. [PMID: 31862470 PMCID: PMC6951330 DOI: 10.1016/j.joca.2019.11.006] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 11/20/2019] [Indexed: 02/08/2023]
Abstract
In this narrative review, we discuss the emerging role of innate immunity in osteoarthritis (OA) joint pain. First, we give a brief description of the pain pathway in the context of OA. Then we consider how neuro-immune signaling pathways may promote OA pain. First, activation of neuronal Pattern Recognition Receptors by mediators released in a damaged joint can result in direct excitation of nociceptors, as well as in production of chemokines and cytokines. Secondly, indirect neuro-immune signaling may occur when innate immune cells produce algogenic factors, including chemokines and cytokines, that act on the pain pathway. Neuro-immune crosstalk occurs at different levels of the pathway, starting in the joint but also in the innervating dorsal root ganglia and in the dorsal horn. Synovitis is characterized by recruitment of immune cells, including macrophages, mast cells, and CD4+ lymphocytes, which may contribute to nociceptor sensitization and OA pain through production of algogenic factors that amplify the activation of sensory neurons. We discuss examples where this scenario has been suggested by findings in human OA and in animal models. Overall, increasing evidence suggests that innate immune pathways play an initiating as well as facilitating role in pain, but information on how these pathways operate in OA remains limited. Since these innate pathways are eminently targetable, future studies in this area may provide fruitful leads towards a better management of symptomatic OA.
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Zheng M, Ambesi A, J. McKeown-Longo P. Role of TLR4 Receptor Complex in the Regulation of the Innate Immune Response by Fibronectin. Cells 2020; 9:cells9010216. [PMID: 31952223 PMCID: PMC7017243 DOI: 10.3390/cells9010216] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 12/12/2022] Open
Abstract
Chronic inflammation and subsequent tissue fibrosis are associated with a biochemical and mechanical remodeling of the fibronectin matrix. Due to its conformational lability, fibronectin is considerably stretched by the contractile forces of the fibrotic microenvironment, resulting in the unfolding of its Type III domains. In earlier studies, we have shown that a peptide mimetic of a partially unfolded fibronectin Type III domain, FnIII-1c, functions as a Damage Associated Molecular Pattern (DAMP) molecule to induce activation of a toll-like receptor 4 (TLR4)/NF-B pathway and the subsequent release of fibro-inflammatory cytokines from human dermal fibroblasts. In the current study, we evaluated the requirement of the canonical TLR4/MD2/CD14 receptor complex in the regulation of FnIII-1c induced cytokine release. Using dermal fibroblasts and human embryonic kidney (HEK) cells, we found that all the components of the TLR4/MD2/CD14 complex were required for the release of the fibro-inflammatory cytokine, interleukin 8 (IL-8) in response to both FnIII-1c and the canonical TLR4 ligand, lipopolysaccharide (LPS). However, FnIII-1c mediated IL-8 release was strictly dependent on membrane-associated CD14, while LPS could use soluble CD14. These findings demonstrate that LPS and FnIII-1c share a similar but not identical mechanism of TLR4 activation in human dermal fibroblasts.
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Sung PS, Hsieh SL. CLEC2 and CLEC5A: Pathogenic Host Factors in Acute Viral Infections. Front Immunol 2019; 10:2867. [PMID: 31867016 PMCID: PMC6909378 DOI: 10.3389/fimmu.2019.02867] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 11/22/2019] [Indexed: 12/11/2022] Open
Abstract
The protective roles of endosomal toll-like receptors (TLRs) and cytosolic nucleic acid sensors are well elucidated, but the pathogenic host factors during viral infections remain unclear. Spleen tyrosine kinase (Syk)-coupled C-type lectins (CLECs) CLEC2 and CLEC5A are highly expressed on platelets and myeloid cells, respectively. CLEC2 has been shown to recognize snake venom aggretin and the endogenous ligand podoplanin and acts as a critical regulator in the development and immunothrombosis. Although CLEC2 has been reported to interact with type I immunodeficiency virus (HIV-1), its role in viral infections is still unclear. CLEC5A binds to fucose and mannose moieties of dengue virus membrane glycans, as well as to N-acetylglucosamine (GlcNAc)/N-acetylmuramic acid (MurNAc) disaccharides that form the backbone of L. monocytogenes peptidoglycans. Recently, we demonstrated that both CLEC2 and CLEC5A are critical in microbe-induced “neutrophil extracellular trap” (NET) formation and proinflammatory cytokine production. Moreover, activation of CLEC2 by dengue virus (DV) and H5N1 influenza virus (IAV) induces the release of extracellular vesicles (EVs), which further enhance NETosis and proinflammatory cytokine production via CLEC5A and Toll-like receptor 2 (TLR2). These findings not only illustrate the immunomodulatory effects of EVs during platelet-leukocyte interactions, but also demonstrate the critical roles of CLEC2 and CLEC5A in acute viral infections.
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Affiliation(s)
- Pei-Shan Sung
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Shie-Liang Hsieh
- Genomics Research Center, Academia Sinica, Taipei, Taiwan.,Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.,Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute for Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan
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Costa Mendonça-Natividade F, Duque Lopes C, Ricci-Azevedo R, Sardinha-Silva A, Figueiredo Pinzan C, Paiva Alegre-Maller AC, L Nohara L, B Carneiro A, Panunto-Castelo A, C Almeida I, Roque-Barreira MC. Receptor Heterodimerization and Co-Receptor Engagement in TLR2 Activation Induced by MIC1 and MIC4 from Toxoplasma gondii. Int J Mol Sci 2019; 20:ijms20205001. [PMID: 31658592 PMCID: PMC6829480 DOI: 10.3390/ijms20205001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 09/17/2019] [Accepted: 09/30/2019] [Indexed: 01/07/2023] Open
Abstract
The microneme organelles of Toxoplasma gondii tachyzoites release protein complexes (MICs), including one composed of the transmembrane protein MIC6 plus MIC1 and MIC4. In this complex, carbohydrate recognition domains of MIC1 and MIC4 are exposed and interact with terminal sialic acid and galactose residues, respectively, of host cell glycans. Recently, we demonstrated that MIC1 and MIC4 binding to the N-glycans of Toll-like receptor (TLR) 2 and TLR4 on phagocytes triggers cell activation and pro-inflammatory cytokine production. Herein, we investigated the requirement for TLR2 heterodimerization and co-receptors in MIC-induced responses, as well as the signaling molecules involved. We used MICs to stimulate macrophages and HEK293T cells transfected with TLR2 and TLR1 or TLR6, both with or without the co-receptors CD14 and CD36. Then, the cell responses were analyzed, including nuclear factor-kappa B (NF-κB) activation and cytokine production, which showed that (1) only TLR2, among the studied factors, is crucial for MIC-induced cell activation; (2) TLR2 heterodimerization augments, but is not critical for, activation; (3) CD14 and CD36 enhance the response to MIC stimulus; and (4) MICs activate cells through a transforming growth factor beta-activated kinase 1 (TAK1)-, mammalian p38 mitogen-activated protein kinase (p38)-, and NF-κB-dependent pathway. Remarkably, among the studied factors, the interaction of MIC1 and MIC4 with TLR2 N-glycans is sufficient to induce cell activation, which promotes host protection against T. gondii infection.
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Affiliation(s)
- Flávia Costa Mendonça-Natividade
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
| | - Carla Duque Lopes
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
| | - Rafael Ricci-Azevedo
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
| | - Aline Sardinha-Silva
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
| | - Camila Figueiredo Pinzan
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
| | - Ana Claudia Paiva Alegre-Maller
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
| | - Lilian L Nohara
- Border Biomedical Research Center (BBRC), Department of Biological Sciences, University of Texas at El Paso (UTEP), El Paso, TX 79968, USA.
| | - Alan B Carneiro
- Border Biomedical Research Center (BBRC), Department of Biological Sciences, University of Texas at El Paso (UTEP), El Paso, TX 79968, USA.
- Institute of Medical Biochemistry, Program of Molecular Biology and Biotechnology at Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro RJ 21941-599, Brazil.
| | - Ademilson Panunto-Castelo
- Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo USP (FFCLRP/USP), Ribeirão Preto SP 14040-900, Brazil.
| | - Igor C Almeida
- Border Biomedical Research Center (BBRC), Department of Biological Sciences, University of Texas at El Paso (UTEP), El Paso, TX 79968, USA.
| | - Maria Cristina Roque-Barreira
- Laboratory of Immunochemistry and Glycobiology, Department of Cell and Molecular Biology and Pathogenic Bioagents, Ribeirão Preto Medical School, University of São Paulo (FMRP/USP), Ribeirão Preto SP 14049-900, Brazil.
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Miller L, Klemm J, Schmidt C, Hanschmann KM, Bekeredjian-Ding I, Waibler Z. Individual combinations of danger signals synergistically increase FVIII product immunogenicity. Haemophilia 2019; 25:996-1002. [PMID: 31584736 DOI: 10.1111/hae.13852] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 08/27/2019] [Accepted: 09/03/2019] [Indexed: 02/03/2023]
Abstract
INTRODUCTION The most severe side effect in haemophilia A treatment is the development of antifactor VIII antibodies, also called inhibitors. Why inhibitors develop in a proportion of treated patients while others are unaffected still remains unanswered. The presence of immunological danger signals, associated with events such as infection or surgery, has been proposed to play a role. Previous studies demonstrated that the presence of the bacterial molecule lipopolysaccharide (LPS) can synergistically increase the activation of human DC and subsequent T cell activation by FVIII. AIM AND METHODS In the present study, we investigated whether a combination of two danger signals can further increase immune cell activation by FVIII. For this, human in vitro differentiated DC that were treated with combinations of danger signals were co-cultured with autologous primary T cells, and T cell proliferation was analysed. RESULTS Interestingly, by combining LPS with a second danger signal, lower LPS concentrations were sufficient to synergistically increase DC and subsequent T cell activation by FVIII. Of note, a combination of LPS and the double-stranded RNA, polyinosinic-polycytidylic acid (poly(I:C)), was most potent in increasing FVIII immunogenicity, followed by LPS + R848 (resiquimod). However, a combination of LPS and the bacterial lipopeptide Pam3CysSK4 did not induce increased immune cell activation by FVIII. CONCLUSION Thus, individual combinations of danger signals can increase FVIII product immunogenicity. This should be considered in the treatment routine of haemophilia A patients.
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Affiliation(s)
- Lilija Miller
- Division of Immunology, Paul-Ehrlich-Institut, Langen, Germany
| | - Jessica Klemm
- Division of Immunology, Paul-Ehrlich-Institut, Langen, Germany
| | - Carolin Schmidt
- Division of Immunology, Paul-Ehrlich-Institut, Langen, Germany
| | | | | | - Zoe Waibler
- Division of Immunology, Paul-Ehrlich-Institut, Langen, Germany
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Mellal K, Omri S, Mulumba M, Tahiri H, Fortin C, Dorion MF, Pham H, Garcia Ramos Y, Zhang J, Pundir S, Joyal JS, Bouchard JF, Sennlaub F, Febbraio M, Hardy P, Gravel SP, Marleau S, Lubell WD, Chemtob S, Ong H. Immunometabolic modulation of retinal inflammation by CD36 ligand. Sci Rep 2019; 9:12903. [PMID: 31501473 PMCID: PMC6733801 DOI: 10.1038/s41598-019-49472-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2018] [Accepted: 08/20/2019] [Indexed: 12/26/2022] Open
Abstract
In subretinal inflammation, activated mononuclear phagocytes (MP) play a key role in the progression of retinopathies. Little is known about the mechanism involved in the loss of photoreceptors leading to vision impairment. Studying retinal damage induced by photo-oxidative stress, we observed that cluster of differentiation 36 (CD36)-deficient mice featured less subretinal MP accumulation and attenuated photoreceptor degeneration. Moreover, treatment with a CD36-selective azapeptide ligand (MPE-001) reduced subretinal activated MP accumulation in wild type mice and preserved photoreceptor layers and function as assessed by electroretinography in a CD36-dependent manner. The azapeptide modulated the transcriptome of subretinal activated MP by reducing pro-inflammatory markers. In isolated MP, MPE-001 induced dissociation of the CD36-Toll-like receptor 2 (TLR2) oligomeric complex, decreasing nuclear factor-kappa B (NF-κB) and NLR family pyrin domain containing 3 (NLRP3) inflammasome activation. In addition, MPE-001 caused an aerobic metabolic shift in activated MP, involving peroxisome proliferator-activated receptor-γ (PPAR-γ) activation, which in turn mitigated inflammation. Accordingly, PPAR-γ inhibition blocked the cytoprotective effect of MPE-001 on photoreceptor apoptosis elicited by activated MP. By altering activated MP metabolism, MPE-001 decreased immune responses to alleviate subsequent inflammation-dependent neuronal injury characteristic of various vision-threatening retinal disorders.
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Affiliation(s)
- Katia Mellal
- Faculty of Pharmacy, Université de Montréal, Montreal, Canada
| | - Samy Omri
- Maisonneuve-Rosemont Hospital, Montréal, Canada.,Mperia Therapeutics, Montréal, Canada
| | | | - Houda Tahiri
- Departments of Pediatrics, Ophthalmology and Pharmacology, Université de Montréal, Montreal, Canada
| | - Carl Fortin
- Faculty of Pharmacy, Université de Montréal, Montreal, Canada
| | | | - Hung Pham
- Faculty of Pharmacy, Université de Montréal, Montreal, Canada
| | | | - Jinqiang Zhang
- Department of Chemistry, Université de Montréal, Montreal, Canada
| | - Sheetal Pundir
- Departments of Pediatrics, Ophthalmology and Pharmacology, Université de Montréal, Montreal, Canada
| | - Jean-Sébastien Joyal
- Departments of Pediatrics, Ophthalmology and Pharmacology, Université de Montréal, Montreal, Canada
| | - Jean-François Bouchard
- Neuropharmacology Laboratory, School of Optometry, Université de Montréal, Montreal, Canada
| | - Florian Sennlaub
- Institut de la Vision, Sorbonne Universités, INSERM, CNRS, Paris, France
| | - Maria Febbraio
- Department of Dentistry, University of Alberta, Edmonton, Canada
| | - Pierre Hardy
- Departments of Pediatrics, Ophthalmology and Pharmacology, Université de Montréal, Montreal, Canada
| | | | - Sylvie Marleau
- Faculty of Pharmacy, Université de Montréal, Montreal, Canada
| | - William D Lubell
- Department of Chemistry, Université de Montréal, Montreal, Canada
| | - Sylvain Chemtob
- Maisonneuve-Rosemont Hospital, Montréal, Canada. .,Departments of Pediatrics, Ophthalmology and Pharmacology, Université de Montréal, Montreal, Canada.
| | - Huy Ong
- Faculty of Pharmacy, Université de Montréal, Montreal, Canada.
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Ao D, Xia P, Jiang S, Chen N, Meurens F, Zhu J. Comparative transcriptome analysis of TLR8 signaling cells revealed the porcine TLR8 specific differentially expressed genes. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2019; 98:129-136. [PMID: 31077691 DOI: 10.1016/j.dci.2019.05.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/05/2019] [Accepted: 05/07/2019] [Indexed: 06/09/2023]
Abstract
TLRs are the first discovered family of pattern recognition receptors (PRRs). They recognize pathogen associated molecular patterns (PAMPs) and initiate protective immune response. TLR8 as the main endolysosomal TLR, has recently regained attention especially for its structure and function. We previously found TLR8 exhibits species-specific activation by TLR7 specific agonist, Imiquimod (R837). Thus, we next initiated the identification of porcine TLR8 (pTLR8) specific downstream differentially expressed genes (DEGs) by parallel transcriptome analysis of porcine TLR8 and human TLR8 (hTLR8) signaling stable NF-κB reporter cells activated by TLR8 agonist Resiquimod (R848). It turned out that the two TLR8 NF-κB reporter cells can recapitulate the species-specific activity of pTLR8 and hTLR8, transcriptome analysis revealed a number of pTLR8 specific DEGs activated by R848, and some of these gene expressions were confirmed in porcine alveolar macrophages (PAMs) but not occurred in human cell types.
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Affiliation(s)
- Da Ao
- Comparative Medicine Research Institute, Yangzhou University, China; College Veterinary Medicine, Yangzhou University, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, 225009, China
| | - Pengpeng Xia
- Comparative Medicine Research Institute, Yangzhou University, China; College Veterinary Medicine, Yangzhou University, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, 225009, China
| | - Sen Jiang
- Comparative Medicine Research Institute, Yangzhou University, China; College Veterinary Medicine, Yangzhou University, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, 225009, China
| | - Nanhua Chen
- Comparative Medicine Research Institute, Yangzhou University, China; College Veterinary Medicine, Yangzhou University, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, 225009, China
| | - François Meurens
- BIOEPAR, INRA, Oniris, Université Bretagne Loire, 44307, Nantes, France
| | - Jianzhong Zhu
- Comparative Medicine Research Institute, Yangzhou University, China; College Veterinary Medicine, Yangzhou University, China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, China; Joint International Research Laboratory of Agriculture and Agri-Product Safety, Yangzhou, 225009, China.
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Wu Z, Zhang Z, Lei Z, Lei P. CD14: Biology and role in the pathogenesis of disease. Cytokine Growth Factor Rev 2019; 48:24-31. [PMID: 31296363 DOI: 10.1016/j.cytogfr.2019.06.003] [Citation(s) in RCA: 120] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 06/21/2019] [Indexed: 12/22/2022]
Abstract
Human monocyte differentiation antigen CD14 is a pattern recognition receptor (PRR) that enhances innate immune responses. CD14 was first identified as a marker of monocytes to signal intracellular responses upon bacterial encounters. Given the absence of an intracellular tail, CD14 was doubted to have the signaling capacities. Later CD14 was confirmed as the TLR co-receptor for the detection of pathogen-associated molecular patterns. However, CD14 has been revealed as a multi-talented receptor. In last decade, CD14 was identified to activate NFAT to regulate the life cycle of myeloid cells in a TLR4-independent manner and to transport inflammatory lipids to induce phagocyte hyperactivation. And its influences on multiple related diseases have been further considered. In this review, we summarize advancements in the basic biology of the CD14 including its structure, binding ligands, signaling pathways, and its roles in the pathogenesis of inflammation, atherosclerosis, tumor and metabolic diseases. We also discuss the therapeutic potential of targeting the CD14 in related diseases.
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Affiliation(s)
- Zhenghao Wu
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Department of Breast and Thyroid Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhenxiong Zhang
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Department of Biliary-Pancreatic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030 China
| | - Zehua Lei
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China; Department of Orthopaedic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Ping Lei
- Department of Immunology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Biglycan is a new high-affinity ligand for CD14 in macrophages. Matrix Biol 2019; 77:4-22. [DOI: 10.1016/j.matbio.2018.05.006] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 05/15/2018] [Accepted: 05/15/2018] [Indexed: 02/06/2023]
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Kim YH, Kim KW, Lee SY, Koo KO, Kwon SO, Seo JH, Suh DI, Shin YH, Ahn K, Oh SY, Lee S, Sohn MH, Hong SJ. Maternal Perinatal Dietary Patterns Affect Food Allergy Development in Susceptible Infants. THE JOURNAL OF ALLERGY AND CLINICAL IMMUNOLOGY-IN PRACTICE 2019; 7:2337-2347.e7. [PMID: 30930272 DOI: 10.1016/j.jaip.2019.03.026] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Revised: 03/13/2019] [Accepted: 03/18/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND The increasing incidence of food allergy (FA) can be attributed to interactions between genes and the environment, but these interactions are not yet fully clear. OBJECTIVE We aimed to evaluate the interaction between infant genetic variations and maternal dietary patterns to identify risk factors in the development of FA. METHODS We used the Cohort for Childhood Origin of Asthma and allergic diseases birth cohort of 1628 infants, born between 2007 and 2015. Maternal dietary intakes were assessed at 26 weeks of pregnancy using a food frequency questionnaire and grouped according to 5 dietary patterns. Infant cord blood samples were genotyped at 12 loci. RESULTS Among 1628 infants, 147 (9.0%) were diagnosed with FA based on history. A maternal confectionery diet characterized by a higher intake of baked and sugary products during pregnancy was associated with a higher prevalence of FA (adjusted odds ratio [OR] = 1.517, P = .02); this dietary pattern tended to be higher in trans fat (r = 0.498, P < .001). Development of FA was associated with longer periods of breastfeeding (adjusted OR = 1.792, P = .03), and this dietary pattern was more significantly related to the development of FA in infants with the homozygous TT genotype of CD14 (rs2569190) and more than 1 copy of GSTM1 and GSTT1. CONCLUSIONS A maternal confectionery diet during pregnancy that majorly consists of baked and sugary products, combined with a longer ensuing period of breastfeeding, may lead to the development of FA, suggesting a harmful effect of trans fats in the infant. Polymorphisms in CD14 and GST in the infant influence FA susceptibility.
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Affiliation(s)
- Yoon Hee Kim
- Department of Pediatrics, Gangnam Severance Hospital, Seoul, Korea; Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea
| | - Kyung Won Kim
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea; Department of Pediatrics, Severance Hospital, Seoul, Korea
| | - So-Yeon Lee
- Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
| | - Kyeong Ok Koo
- Department of Food and Nutrition, Research Institute of Human Ecology, Kyung Hee University, Seoul, Korea
| | - Sung-Ok Kwon
- Biomedical Research Institute, Kangwon National University Hospital, Chuncheon, Korea
| | - Ju-Hee Seo
- Department of Pediatrics, Dangook University Hospital, Cheonan, Korea
| | - Dong In Suh
- Department of Pediatrics, Seoul National University College of Medicine, Seoul, Korea
| | - Youn Ho Shin
- Department of Pediatrics, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Kangmo Ahn
- Department of Pediatrics, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - Se-Young Oh
- Department of Food and Nutrition, Research Institute of Human Ecology, Kyung Hee University, Seoul, Korea
| | - Sooyoung Lee
- Department of Pediatrics, Ajou University School of Medicine, Suwon, Korea
| | - Myung Hyun Sohn
- Institute of Allergy, Severance Biomedical Science Institute, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Seoul, Korea; Department of Pediatrics, Severance Hospital, Seoul, Korea.
| | - Soo-Jong Hong
- Department of Pediatrics, Childhood Asthma Atopy Center, Environmental Health Center, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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Davis FM, Kimball A, denDekker A, Joshi AD, Boniakowski AE, Nysz D, Allen RM, Obi A, Singer K, Henke PK, Moore BB, Kunkel SL, Gallagher KA. Histone Methylation Directs Myeloid TLR4 Expression and Regulates Wound Healing following Cutaneous Tissue Injury. THE JOURNAL OF IMMUNOLOGY 2019; 202:1777-1785. [PMID: 30710046 DOI: 10.4049/jimmunol.1801258] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 01/03/2019] [Indexed: 12/27/2022]
Abstract
Myeloid cells are critical for orchestrating regulated inflammation during wound healing. TLRs, particularly TLR4, and its downstream-signaling MyD88 pathway play an important role in regulating myeloid-mediated inflammation. Because an initial inflammatory phase is vital for tissue repair, we investigated the role of TLR4-regulated, myeloid-mediated inflammation in wound healing. In a cutaneous tissue injury murine model, we found that TLR4 expression is dynamic in wound myeloid cells during the course of normal wound healing. We identified that changes in myeloid TLR4 during tissue repair correlated with increased expression of the histone methyltransferase, mixed-lineage leukemia 1 (MLL1), which specifically trimethylates the histone 3 lysine 4 (H3K4me3) position of the TLR4 promoter. Furthermore, we used a myeloid-specific Mll1 knockout (Mll1f/fLyz2Cre+ ) to determine MLL1 drives Tlr4 expression during wound healing. To understand the critical role of myeloid-specific TLR4 signaling, we used mice deficient in Tlr4 (Tlr4-/- ), Myd88 (Myd88 -/-), and myeloid-specific Tlr4 (Tlr4f/fLyz2Cre+) to demonstrate delayed wound healing at early time points postinjury. Furthermore, in vivo wound myeloid cells isolated from Tlr4-/- and Myd88 -/- wounds demonstrated decreased inflammatory cytokine production. Importantly, adoptive transfer of monocyte/macrophages from wild-type mice trafficked to wounds with restoration of normal healing and myeloid cell function in Tlr4-deficient mice. These results define a role for myeloid-specific, MyD88-dependent TLR4 signaling in the inflammatory response following cutaneous tissue injury and suggest that MLL1 regulates TLR4 expression in wound myeloid cells.
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Affiliation(s)
- Frank M Davis
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Andrew Kimball
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Aaron denDekker
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Amrita D Joshi
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Anna E Boniakowski
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Dylan Nysz
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Ronald M Allen
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109
| | - Andrea Obi
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Kanakadurga Singer
- Section of Endocrinology, Department of Pediatrics, University of Michigan, Ann Arbor, MI 48109; and
| | - Peter K Henke
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109
| | - Bethany B Moore
- Department of Internal Medicine, University of Michigan, Ann Arbor, MI 48109
| | - Steven L Kunkel
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109
| | - Katherine A Gallagher
- Section of Vascular Surgery, Department of Surgery, University of Michigan, Ann Arbor, MI 48109;
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Abekura F, Park J, Kwak CH, Ha SH, Cho SH, Chang YC, Ha KT, Chang HW, Lee YC, Chung TW, Kim CH. Esculentoside B inhibits inflammatory response through JNK and downstream NF-κB signaling pathway in LPS-triggered murine macrophage RAW 264.7 cells. Int Immunopharmacol 2019; 68:156-163. [PMID: 30639961 DOI: 10.1016/j.intimp.2019.01.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 12/24/2018] [Accepted: 01/03/2019] [Indexed: 01/02/2023]
Abstract
Natural compound esculentoside B (EsB), (2S,4aR,6aR,6aS,6bR,8aR,9R,10R,11S,12aR,14bS)-11-hydroxy-9-(hydroxymethyl)-2 methoxycarbonyl-2,6a,6b,9,12a-pentamethyl-10-[(2S,3R,4S,5R)-3,4,5-trihydroxyoxan-2-yl]oxy-1,3,4,5,6,6a,7,8,8a,10,11,12,13,14b-tetradecahydropicene-4a-carboxylic acid with molecular weight of 664.833, isolated from roots of Phytolacca acinosa Roxb has been widely used as a constituent of traditional Chinese medicine (TCM). However, the anti-inflammatory capacity of EsB has not been reported yet. Therefore, the objective of this study was to investigate anti-inflammatory activities of EsB in LPS-treated macrophage RAW 264.7 cells. EsB could inhibit nitric oxide (NO) production. EsB also suppressed gene and protein expression levels of inducible isoform of NO synthase (NOS) and cyclooxygenase-2 in a dose-dependent manner. In addition, EsB decreased gene expression and protein secretion levels of pro-inflammatory cytokines such as IL-1β, TNF-α, and IL-6. EsB remarkably suppressed nuclear translocation of nuclear factor kappa-B (NF-κB) from cytosolic space. Phosphorylation of IκB was also inhibited by EsB. Moreover, EsB specifically down-regulated phospho-c-Jun N-terminal kinase (p-JNK), but not p-p38 or phospho-extracellular signal-regulated kinase 1/2 (p-ERK1/2). Taken together, these results suggest that EsB has inhibitory effect on inflammatory response by inactivating NF-κB and p-JNK. It could be used as a new modulatory drug for effective treatment of inflammation-related diseases.
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Affiliation(s)
- Fukushi Abekura
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, Sungkyunkwan University, Seoburo 2066, Jangan-Gu, Suwon, Gyunggi-Do 16419, Republic of Korea
| | - Junyoung Park
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, Sungkyunkwan University, Seoburo 2066, Jangan-Gu, Suwon, Gyunggi-Do 16419, Republic of Korea
| | - Choong-Hwan Kwak
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, Sungkyunkwan University, Seoburo 2066, Jangan-Gu, Suwon, Gyunggi-Do 16419, Republic of Korea; Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan City, Gyeongsangnam-Do, Republic of Korea
| | - Sun-Hyung Ha
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, Sungkyunkwan University, Seoburo 2066, Jangan-Gu, Suwon, Gyunggi-Do 16419, Republic of Korea
| | - Seung-Hak Cho
- Division of Enteric Diseases, Center for Infectious Diseases Research, Korea National Institute of Health, Heungdeok-gu, Cheongju 363-951, Republic of Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Medicine, Catholic University of Daegu School of Medicine, Daegu, Republic of Korea.
| | - Ki-Tae Ha
- Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan City, Gyeongsangnam-Do, Republic of Korea.
| | - Hyeun-Wook Chang
- College of Pharmacy, Yeungnam University, Gyeongsan 701-947, Republic of Korea
| | - Young-Choon Lee
- Faculty of Medicinal Biotechnology, Dong-A University, Saha-Gu, Busan, Republic of Korea.
| | - Tae-Wook Chung
- Division of Applied Medicine, School of Korean Medicine, Pusan National University, Yangsan City, Gyeongsangnam-Do, Republic of Korea
| | - Cheorl-Ho Kim
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, Sungkyunkwan University, Seoburo 2066, Jangan-Gu, Suwon, Gyunggi-Do 16419, Republic of Korea.
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McCormick SPA, Schneider WJ. Lipoprotein(a) catabolism: a case of multiple receptors. Pathology 2018; 51:155-164. [PMID: 30595508 DOI: 10.1016/j.pathol.2018.11.003] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 10/31/2018] [Accepted: 11/01/2018] [Indexed: 01/09/2023]
Abstract
Lipoprotein(a) [Lp(a)] is an apolipoprotein B (apoB)-containing plasma lipoprotein similar in structure to low-density lipoprotein (LDL). Lp(a) is more complex than LDL due to the presence of apolipoprotein(a) [apo(a)], a large glycoprotein sharing extensive homology with plasminogen, which confers some unique properties onto Lp(a) particles. ApoB and apo(a) are essential for the assembly and catabolism of Lp(a); however, other proteins associated with the particle may modify its metabolism. Lp(a) specifically carries a cargo of oxidised phospholipids (OxPL) bound to apo(a) which stimulates many proinflammatory pathways in cells of the arterial wall, a key property underlying its pathogenicity and association with cardiovascular disease (CVD). While the liver and kidney are the major tissues implicated in Lp(a) clearance, the pathways for Lp(a) uptake appear to be complex and are still under investigation. Biochemical studies have revealed an exceptional array of receptors that associate with Lp(a) either via its apoB, apo(a), or OxPL components. These receptors fall into five main categories, namely 'classical' lipoprotein receptors, toll-like and scavenger receptors, lectins, and plasminogen receptors. The roles of these receptors have largely been dissected by genetic manipulation in cells or mice, although their relative physiological importance for removal of Lp(a) from the circulation remains unclear. The LPA gene encoding apo(a) has an overwhelming effect on Lp(a) levels which precludes any clear associations between potential Lp(a) receptor genes and Lp(a) levels in population studies. Targeted approaches and the selection of unique Lp(a) phenotypes within populations has nevertheless allowed for some associations to be made. Few of the proposed Lp(a) receptors can specifically be manipulated with current drugs and, as such, it is not currently clear whether any of these receptors could provide relevant targets for therapeutic manipulation of Lp(a) levels. This review summarises the current status of knowledge about receptor-mediated pathways for Lp(a) catabolism.
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Affiliation(s)
- Sally P A McCormick
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.
| | - Wolfgang J Schneider
- Department of Medical Biochemistry, Max F. Perutz Laboratories, Medical University of Vienna, Vienna, Austria
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49
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Aloor JJ, Azzam KM, Guardiola JJ, Gowdy KM, Madenspacher JH, Gabor KA, Mueller GA, Lin WC, Lowe JM, Gruzdev A, Henderson MW, Draper DW, Merrick BA, Fessler MB. Leucine-rich repeats and calponin homology containing 4 (Lrch4) regulates the innate immune response. J Biol Chem 2018; 294:1997-2008. [PMID: 30523158 DOI: 10.1074/jbc.ra118.004300] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 11/27/2018] [Indexed: 01/07/2023] Open
Abstract
Toll-like receptors (TLRs) are pathogen-recognition receptors that trigger the innate immune response. Recent reports have identified accessory proteins that provide essential support to TLR function through ligand delivery and receptor trafficking. Herein, we introduce leucine-rich repeats (LRRs) and calponin homology containing 4 (Lrch4) as a novel TLR accessory protein. Lrch4 is a membrane protein with nine LRRs in its predicted ectodomain. It is widely expressed across murine tissues and has two expression variants that are both regulated by lipopolysaccharide (LPS). Predictive modeling indicates that Lrch4 LRRs conform to the horseshoe-shaped structure typical of LRRs in pathogen-recognition receptors and that the best structural match in the protein database is to the variable lymphocyte receptor of the jawless vertebrate hagfish. Silencing Lrch4 attenuates cytokine induction by LPS and multiple other TLR ligands and dampens the in vivo innate immune response. Lrch4 promotes proper docking of LPS in lipid raft membrane microdomains. We provide evidence that this is through regulation of lipid rafts as Lrch4 silencing reduces cell surface gangliosides, a metric of raft abundance, as well as expression and surface display of CD14, a raft-resident LPS co-receptor. Taken together, we identify Lrch4 as a broad-spanning regulator of the innate immune response and a potential molecular target in inflammatory disease.
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Affiliation(s)
- Jim J Aloor
- From the Immunity, Inflammation and Disease Laboratory
| | | | | | | | | | | | | | - Wan-Chi Lin
- From the Immunity, Inflammation and Disease Laboratory
| | - Julie M Lowe
- From the Immunity, Inflammation and Disease Laboratory
| | | | | | | | - B Alex Merrick
- National Toxicology Program, NIEHS, National Institutes of Health, Research Triangle Park, North Carolina 27709
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50
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Beccaria C, Silvestrini P, Renna MS, Ortega HH, Calvinho LF, Dallard BE, Baravalle C. Panax ginseng extract reduces Staphylococcus aureus internalization into bovine mammary epithelial cells but does not affect macrophages phagocytic activity. Microb Pathog 2018; 122:63-72. [DOI: 10.1016/j.micpath.2018.06.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 06/05/2018] [Accepted: 06/06/2018] [Indexed: 12/21/2022]
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