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Litman K, Bouch S, Litvack ML, Post M. Therapeutic characteristics of alveolar-like macrophages in mouse models of hyperoxia and LPS-induced lung inflammation. Am J Physiol Lung Cell Mol Physiol 2024; 327:L269-L281. [PMID: 38887793 DOI: 10.1152/ajplung.00270.2023] [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: 08/24/2023] [Revised: 05/28/2024] [Accepted: 06/12/2024] [Indexed: 06/20/2024] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a severe lung disease of high mortality (30-50%). Patients require lifesaving supplemental oxygen therapy; however, hyperoxia can induce pulmonary inflammation and cellular damage. Although alveolar macrophages (AMs) are essential for lung immune homeostasis, they become compromised during inflammatory lung injury. To combat this, stem cell-derived alveolar-like macrophages (ALMs) are a prospective therapeutic for lung diseases like ARDS. Using in vitro and in vivo approaches, we investigated the impact of hyperoxia on murine ALMs during acute inflammation. In vitro, ALMs retained their viability, growth, and antimicrobial abilities when cultured at 60% O2, whereas they die at 90% O2. In contrast, ALMs instilled in mouse lungs remained viable during exposure of mice to 90% O2. The ability of the delivered ALMs to phagocytose Pseudomonas aeruginosa was not impaired by exposure to 60 or 90% O2. Furthermore, ALMs remained immunologically stable in a murine model of LPS-induced lung inflammation when exposed to 60 and 90% O2 and effectively attenuated the accumulation of CD11b+ inflammatory cells in the airways. These results support the potential use of ALMs in patients with ARDS receiving supplemental oxygen therapy.NEW & NOTEWORTHY The current findings support the prospective use of stem cell-derived alveolar-like macrophages (ALMs) as a therapeutic for inflammatory lung disease such as acute respiratory distress syndrome (ARDS) during supplemental oxygen therapy where lungs are exposed to high levels of oxygen. Alveolar-like macrophages directly delivered to mouse lungs were found to remain viable, immunologically stable, phagocytic toward live Pseudomonas aeruginosa, and effective in reducing CD11b+ inflammatory cell numbers in LPS-challenged lungs during moderate and extreme hyperoxic exposure.
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Affiliation(s)
- Kymberly Litman
- Translational Medicine Programme, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
| | - Sheena Bouch
- Translational Medicine Programme, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Michael L Litvack
- Translational Medicine Programme, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Martin Post
- Translational Medicine Programme, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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2
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Boutanquoi PM, Khan AS, Cabeza L, Jantzen L, Gautier T, Yesylevskyy S, Ramseyer C, Masson D, Van Waes V, Hichami A, Khan NA. A novel fatty acid analogue triggers CD36-GPR120 interaction and exerts anti-inflammatory action in endotoxemia. Cell Mol Life Sci 2024; 81:176. [PMID: 38598021 PMCID: PMC11006773 DOI: 10.1007/s00018-024-05207-1] [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: 01/30/2024] [Revised: 03/13/2024] [Accepted: 03/14/2024] [Indexed: 04/11/2024]
Abstract
Inflammation is a mediator of a number of chronic pathologies. We synthesized the diethyl (9Z,12Z)-octadeca-9,12-dien-1-ylphosphonate, called NKS3, which decreased lipopolysaccharide (LPS)-induced mRNA upregulation of proinflammatory cytokines (IL-1β, IL-6 and TNF-α) not only in primary intraperitoneal and lung alveolar macrophages, but also in freshly isolated mice lung slices. The in-silico studies suggested that NKS3, being CD36 agonist, will bind to GPR120. Co-immunoprecipitation and proximity ligation assays demonstrated that NKS3 induced protein-protein interaction of CD36 with GPR120in RAW 264.7 macrophage cell line. Furthermore, NKS3, via GPR120, decreased LPS-induced activation of TAB1/TAK1/JNK pathway and the LPS-induced mRNA expression of inflammatory markers in RAW 264.7 cells. In the acute lung injury model, NKS3 decreased lung fibrosis and inflammatory cytokines (IL-1β, IL-6 and TNF-α) and nitric oxide (NO) production in broncho-alveolar lavage fluid. NKS3 exerted a protective effect on LPS-induced remodeling of kidney and liver, and reduced circulating IL-1β, IL-6 and TNF-α concentrations. In a septic shock model, NKS3 gavage decreased significantly the LPS-induced mortality in mice. In the last, NKS3 decreased neuroinflammation in diet-induced obese mice. Altogether, these results suggest that NKS3 is a novel anti-inflammatory agent that could be used, in the future, for the treatment of inflammation-associated pathologies.
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Affiliation(s)
- Pierre-Marie Boutanquoi
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Amira Sayed Khan
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Lidia Cabeza
- Laboratoire de Recherches Intégratives en Neurosciences et Psychologie Cognitive-UR LINC, UFC, Besançon, France
| | - Lucas Jantzen
- Laboratoire de Recherches Intégratives en Neurosciences et Psychologie Cognitive-UR LINC, UFC, Besançon, France
| | - Thomas Gautier
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
- LIPNESS, UMR U1231 INSERM/UB/Agro-Sup, Université Bourgogne Franche-Comté, 21000, Dijon, France
| | - Semen Yesylevskyy
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences, 166 10, Prague 6, Czech Republic
- Laboratoire Chrono Environnement UMR CNRS6249, Université de Bourgogne Franche-Comté (UBFC), 16 route de Gray, 25030, Besançon, Cedex, France
- Receptor.AI Inc., 20-22 Wenlock Road, London, N1 7GU, UK
- Department of Physical Chemistry, Faculty of Science, Palacký University Olomouc, 17. listopadu 12, 771 46, Olomouc, Czech Republic
- Department of Physics of Biological Systems, Institute of Physics of the National Academy of Sciences of Ukraine, Prospect Nauky 46, Kiev, 03028, Ukraine
| | - Christophe Ramseyer
- Laboratoire Chrono Environnement UMR CNRS6249, Université de Bourgogne Franche-Comté (UBFC), 16 route de Gray, 25030, Besançon, Cedex, France
| | - David Masson
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
- LIPNESS, UMR U1231 INSERM/UB/Agro-Sup, Université Bourgogne Franche-Comté, 21000, Dijon, France
| | - Vincent Van Waes
- Laboratoire de Recherches Intégratives en Neurosciences et Psychologie Cognitive-UR LINC, UFC, Besançon, France
| | - Aziz Hichami
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Naim Akhtar Khan
- Physiologie de la Nutrition & Toxicologie, UMR U1231 INSERM/Université de Bourgogne/Agro-Sup, Université Bourgogne Franche-Comté, 6 Boulevard Gabriel, 21000, Dijon, France.
- FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France.
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3
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Lee H, Hong R, Jin Y. Altered circular RNA expressions in extracellular vesicles from bronchoalveolar lavage fluids in mice after bacterial infections. Front Immunol 2024; 15:1354676. [PMID: 38638425 PMCID: PMC11024224 DOI: 10.3389/fimmu.2024.1354676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 03/14/2024] [Indexed: 04/20/2024] Open
Abstract
Circular RNAs (circRNAs) are a class of transcripts that often are generated by back-splicing that covalently connects the 3'end of the exon to the 5'end. CircRNAs are more resistant to nuclease and more stable than their linear counterparts. One of the well-recognized roles of circRNAs is the miRNA sponging effects that potentially lead to the regulation of downstream proteins. Despite that circRNAs have been reported to be involved in a wide range of human diseases, including cancers, cardiovascular, and neurological diseases, they have not been studied in inflammatory lung responses. Here, we analyzed the circRNA profiles detected in extracellular vesicles (EVs) obtained from the broncho-alveolar lavage fluids (BALF) in response to LPS or acid instillation in mice. Next, we validated two specific circRNAs in the BALF-EVs and BALF cells in response to endotoxin by RT-qPCR, using specific primers targeting the circular form of RNAs rather than the linear host RNAs. The expression of these selected circRNAs in the BALF inflammatory cells, alveolar macrophages (AMs), neutrophils, and lung tissue were analyzed. We further predicted the potential miRNAs that interact with these circRNAs. Our study is the first report to show that circRNAs are detectable in BALF EVs obtained from mice. The EV-cargo circRNAs are significantly altered by the noxious stimuli. The circRNAs identified using microarrays may be validated by RT-qPCR using primers specific to the circular but not the linear form. Future studies to investigate circRNA expression and function including miRNA sponging in lung inflammation potentially uncover novel strategies to develop diagnostic/therapeutic targets.
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Affiliation(s)
- Heedoo Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, United States
- Department of Biology and Chemistry, Changwon National University, Changwon, Republic of Korea
| | - Rokgi Hong
- Department of Biology and Chemistry, Changwon National University, Changwon, Republic of Korea
| | - Yang Jin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, United States
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Parmar K, Sondarva S. Aerosolizable Pyrazinamide-Loaded Biodegradable Nanoparticles for the Management of Pulmonary Tuberculosis. J Aerosol Med Pulm Drug Deliv 2024; 37:30-40. [PMID: 38197850 DOI: 10.1089/jamp.2022.0078] [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: 01/11/2024] Open
Abstract
Background: Pyrazinamide is a Biopharmaceutical Classification System class III antibiotic indicated for active tuberculosis. Methods: In the present work, pyrazinamide-loaded biodegradable polymeric nanoparticles (PNPs) based dry powder inhaler were developed using the double emulsion solvent evaporation technique and optimized using design of experiments to provide direct pulmonary administration with minimal side effects. Batches were characterized for various physicochemical and aerosol performance properties. Results: Optimized batch exhibited particle size of 284.5 nm, % entrapment efficiency of 71.82%, polydispersibility index of 0.487, zeta potential of -17.23 mV, and in vitro drug release at 4 hours of 79.01%. Spray-dried PNPs were evaluated for drug content, in vitro drug release, and kinetics. The particle mass median aerodynamic diameter was within the alveolar region's range (2.910 μm). In the trachea and lung, there was a 2.5- and 1.2-fold increase in in vivo deposition with respect to pure drug deposition, respectively. In vitro drug uptake findings showed that alveolar macrophages with pyrazinamide PNPs had a considerably higher drug concentration. Furthermore, accelerated stability studies were carried out for the optimized batch. Results indicated no significant change in the evaluation parameters, which showed stability of the formulation for at least a 6-month period. Conclusion: PNPs prepared using biodegradable polymers exhibited efficient pulmonary drug delivery with decent stability.
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Affiliation(s)
- Komal Parmar
- Department of Pharmaceutics, ROFEL Shri G.M. Bilakhia College of Pharmacy, Vapi, Gujarat, India
| | - Swati Sondarva
- Department of Pharmaceutics, ROFEL Shri G.M. Bilakhia College of Pharmacy, Vapi, Gujarat, India
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Busey GW, Manjegowda MC, Huang T, Iobst WH, Naphade SS, Kennedy JA, Doyle CA, Seegren PV, Lynch KR, Desai BN. Analogs of FTY720 inhibit TRPM7 but not S1PRs and exert multimodal anti-inflammatory effects. J Gen Physiol 2024; 156:e202313419. [PMID: 37943249 PMCID: PMC10635799 DOI: 10.1085/jgp.202313419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 08/04/2023] [Accepted: 10/20/2023] [Indexed: 11/10/2023] Open
Abstract
TRPM7, a TRP channel with ion conductance and kinase activities, has emerged as an attractive drug target for immunomodulation. Reverse genetics and cell biological studies have already established a key role for TRPM7 in the inflammatory activation of macrophages. Advancing TRPM7 as a viable molecular target for immunomodulation requires selective TRPM7 inhibitors with in vivo tolerability and efficacy. Such inhibitors have the potential to interdict inflammatory cascades mediated by systemic and tissue-specialized macrophages. FTY720, an FDA-approved drug for multiple sclerosis inhibits TRPM7. However, FTY720 is a prodrug and its metabolite, FTY720-phosphate, is a potent agonist of sphingosine-1-phosphate (S1P) receptors. In this study, we test non-phosphorylatable FTY720 analogs, which are inert against S1PRs and well tolerated in vivo, for activity against TRPM7 and tissue bioavailability. Using patch clamp electrophysiology, we show that VPC01091.4 and AAL-149 block TRPM7 current at low micromolar concentrations. In culture, they act directly on macrophages to blunt LPS-induced inflammatory cytokine expression, though this likely occurrs through multiple molecular targets. We found that VPC01091.4 has significant and rapid accumulation in the brain and lungs, along with direct anti-inflammatory action on alveolar macrophages and microglia. Finally, using a mouse model of endotoxemia, we show VPC01091.4 to be an efficacious anti-inflammatory agent that arrests systemic inflammation in vivo. Together, these findings identify novel small molecule inhibitors that allow TRPM7 channel inhibition independent of S1P receptor targeting which demonstrate potent, polymodal anti-inflammatory activities ex vivo and in vivo.
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Affiliation(s)
- Gregory W. Busey
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Mohan C. Manjegowda
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Tao Huang
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Wesley H. Iobst
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Shardul S. Naphade
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Joel A. Kennedy
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Catherine A. Doyle
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Philip V. Seegren
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Kevin R. Lynch
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
| | - Bimal N. Desai
- Pharmacology Department, University of Virginia School of Medicine, Charlottesville, VA, USA
- Carter Immunology Center, University of Virginia School of Medicine, Charlottesville, VA, USA
- Cardiovascular Research Center, University of Virginia, Charlottesville, VA, USA
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6
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Davuluri KS, Singh AK, Yadav VK, Singh AV, Singh SV, Chauhan DS. Dominant negative biologics normalise the tumour necrosis factor (TNF-α) induced angiogenesis which exploits the Mycobacterium tuberculosis dissemination. BMC Immunol 2023; 24:49. [PMID: 38036985 PMCID: PMC10691138 DOI: 10.1186/s12865-023-00576-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 10/12/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND Tumor necrosis factor (TNF) is known to promote T cell migration and increase the expression of vascular endothelial growth factor (VEGF) and chemokines. The administration of Xpro-1595, a dominant-negative TNF (DN-TNF) engineered to selectively inactivate soluble TNF (solTNF), has been extensively studied and proven effective in reducing TNF production without suppressing innate immunity during infection. The literature also supports the involvement of glutamic acid-leucine-arginine (ELR+) chemokines and VEGF in angiogenesis and the spread of infections. MATERIALS AND METHODS In this study, we administered Xpro-1595 to guinea pigs to selectively inhibit solTNF, aiming to assess its impact on Mycobacterium tuberculosis (M.tb) dissemination, bacterial growth attenuation, and immunological responses. We conducted immunohistochemical analyses, immunological assays, and colony enumeration to comprehensively study the effects of Xpro-1595 by comparing with anti-TB drugs treated M.tb infected guinea pigs. Throughout the infection and treatment period, we measured the levels of Interleukin-12 subunit alpha (IL-12), Interferon-gamma (IFN-γ), TNF, Tumor growth factor (TGF), and T lymphocytes using ELISA. RESULTS Our findings revealed a reduction in M.tb dissemination and inflammation without compromising the immune response during Xpro-1595 treatment. Notably, Xpro-1595 therapy effectively regulated the expression of VEGFA and ELR + chemokines, which emerged as key factors contributing to infection dissemination. Furthermore, this treatment influenced the migration of CD4 T cells in the early stages of infection, subsequently leading to a reduced T cell response and controlled proinflammatory signalling, thus mitigating inflammation. CONCLUSION Our study underscores the pivotal role of solTNF in the dissemination of M.tb to other organs. This preliminary investigation sheds light on the involvement of solTNF in the mechanisms underlying M.tb dissemination, although further in-depth research is warranted to fully elucidate its role in this process.
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Affiliation(s)
- Kusuma Sai Davuluri
- Department of Microbiology and Molecular Biology, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra, India
- Department Biotechnology, GLA University, Mathura, India
| | - Amit Kumar Singh
- Department of Animal Experimentation Facility, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra, India
| | - Vimal Kumar Yadav
- Department of Animal Experimentation Facility, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra, India
| | - Ajay Vir Singh
- Department of Microbiology and Molecular Biology, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra, India
| | | | - Devendra Singh Chauhan
- Department of Microbiology and Molecular Biology, National JALMA Institute for Leprosy and Other Mycobacterial Diseases, Tajganj, Agra, India.
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Peng Y, Li Y, Yang Y, Shi T, Liu R, Luan Y, Yin C. The Role and Potential Regulatory Mechanism of STING Modulated Macrophage Apoptosis and Differentiation in Severe Acute Pancreatitis-Associated Lung Injury. J Interferon Cytokine Res 2023; 43:455-468. [PMID: 37819622 DOI: 10.1089/jir.2023.0077] [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: 10/13/2023] Open
Abstract
This study aims to investigate the role of STING in promoting macrophage apoptosis and regulating macrophage polarization in severe acute pancreatitis (SAP)-associated lung injury in vitro and in vivo. A murine model was established by intraperitoneal injection of caerulein and lipopolysaccharide (LPS). Meanwhile, ANA-1 cells were stimulated with LPS to induce apoptosis in vitro. More primary alveolar macrophages underwent apoptosis and M1 macrophage polarization in the SAP group compared with the control group, which was reversed by inhibiting STING. When ANA-1 cells were induced into M2-type macrophages, the reduction of M1 macrophage markers was accompanied by a decrease of LPS-induced apoptosis. Finally, the inhibitory effect of C-176 on STING ameliorates lung injury and inflammation by adjusting macrophage polarization and rescuing apoptosis. Therefore, inhibiting STING could be a new therapeutic strategy for treating acute pancreatitis-associated lung injury.
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Affiliation(s)
- Yiqiu Peng
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Yingying Li
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Yuxi Yang
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Tingjuan Shi
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Ruixia Liu
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Yingyi Luan
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
| | - Chenghong Yin
- Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, China
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Pahari S, Arnett E, Simper J, Azad A, Guerrero-Arguero I, Ye C, Zhang H, Cai H, Wang Y, Lai Z, Jarvis N, Lumbreras M, Maselli DJ, Peters J, Torrelles JB, Martinez-Sobrido L, Schlesinger LS. A new tractable method for generating human alveolar macrophage-like cells in vitro to study lung inflammatory processes and diseases. mBio 2023; 14:e0083423. [PMID: 37288969 PMCID: PMC10470505 DOI: 10.1128/mbio.00834-23] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 06/09/2023] Open
Abstract
Alveolar macrophages (AMs) are unique lung resident cells that contact airborne pathogens and environmental particulates. The contribution of human AMs (HAMs) to pulmonary diseases remains poorly understood due to the difficulty in accessing them from human donors and their rapid phenotypic change during in vitro culture. Thus, there remains an unmet need for cost-effective methods for generating and/or differentiating primary cells into a HAM phenotype, particularly important for translational and clinical studies. We developed cell culture conditions that mimic the lung alveolar environment in humans using lung lipids, that is, Infasurf (calfactant, natural bovine surfactant) and lung-associated cytokines (granulocyte macrophage colony-stimulating factor, transforming growth factor-β, and interleukin 10) that facilitate the conversion of blood-obtained monocytes to an AM-like (AML) phenotype and function in tissue culture. Similar to HAM, AML cells are particularly susceptible to both Mycobacterium tuberculosis and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections. This study reveals the importance of alveolar space components in the development and maintenance of HAM phenotype and function and provides a readily accessible model to study HAM in infectious and inflammatory disease processes, as well as therapies and vaccines. IMPORTANCE Millions die annually from respiratory disorders. Lower respiratory track gas-exchanging alveoli maintain a precarious balance between fighting invaders and minimizing tissue damage. Key players herein are resident AMs. However, there are no easily accessible in vitro models of HAMs, presenting a huge scientific challenge. Here, we present a novel model for generating AML cells based on differentiating blood monocytes in a defined lung component cocktail. This model is non-invasive, significantly less costly than performing a bronchoalveolar lavage, yields more AML cells than HAMs per donor, and retains their phenotype in culture. We have applied this model to early studies of M. tuberculosis and SARS-CoV-2. This model will significantly advance respiratory biology research.
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Affiliation(s)
- Susanta Pahari
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Eusondia Arnett
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Jan Simper
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
- Department of Molecular Immunology and Microbiology, UT Health San Antonio, San Antonio, Texas, USA
| | - Abul Azad
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Israel Guerrero-Arguero
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Chengjin Ye
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Hao Zhang
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious Diseases, University of Texas at San Antonio, San Antonio, Texas, USA
| | - Hong Cai
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious Diseases, University of Texas at San Antonio, San Antonio, Texas, USA
| | - Yufeng Wang
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious Diseases, University of Texas at San Antonio, San Antonio, Texas, USA
| | - Zhao Lai
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, Texas, USA
| | - Natalie Jarvis
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
- Department of Molecular Immunology and Microbiology, UT Health San Antonio, San Antonio, Texas, USA
| | - Miranda Lumbreras
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Diego Jose Maselli
- Division of Pulmonary and Critical Care Medicine, UT Health Science Center, San Antonio, Texas, USA
| | - Jay Peters
- Division of Pulmonary and Critical Care Medicine, UT Health Science Center, San Antonio, Texas, USA
| | - Jordi B. Torrelles
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Luis Martinez-Sobrido
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
| | - Larry S. Schlesinger
- Host Pathogen Interactions and Population Health Programs, Texas Biomedical Research Institute, San Antonio, Texas, USA
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Kuo CW, Su PL, Huang TH, Lin CC, Chen CW, Tsai JS, Liao XM, Chan TY, Shieh CC. Cigarette smoke increases susceptibility of alveolar macrophages to SARS-CoV-2 infection through inducing reactive oxygen species-upregulated angiotensin-converting enzyme 2 expression. Sci Rep 2023; 13:7894. [PMID: 37193781 DOI: 10.1038/s41598-023-34785-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Accepted: 05/08/2023] [Indexed: 05/18/2023] Open
Abstract
Alveolar macrophages (AMs) are the drivers of pulmonary cytokine storm in severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. This study aimed to investigate clinical-regulatory factors for the entrance protein of SARS-CoV-2, angiotensin-converting enzyme 2 (ACE2) in AMs. Human AMs were collected from 56 patients using bronchoalveolar lavage. ACE2 expression in AMs was positively correlated with smoking pack-year (Spearman's r = 0.347, P = 0.038). In multivariate analysis, current smoking was associated with increased ACE2 in AMs (β-coefficient: 0.791, 95% CI 0.019-1.562, P = 0.045). In vitro study, ex-vivo human AMs with higher ACE2 were more susceptible to SARS-CoV-2 pseudovirus (CoV-2 PsV). Treating human AMs using cigarette smoking extract (CSE) increases the ACE2 and susceptibility to CoV-2 PsV. CSE did not significantly increase the ACE2 in AMs of reactive oxygen species (ROS) deficient Cybb-/- mice; however, exogenous ROS increased the ACE2 in Cybb-/- AMs. N-acetylcysteine (NAC) decreases ACE2 by suppressing intracellular ROS in human AMs. In conclusion, cigarette smoking increases the susceptibility to SARS-CoV-2 by increasing ROS-induced ACE2 expression of AMs. Further investigation into the preventive effect of NAC on the pulmonary complications of COVID-19 is required.
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Affiliation(s)
- Chin-Wei Kuo
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan, 70403, Taiwan
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Po-Lan Su
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tang-Hsiu Huang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan, 70403, Taiwan
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chien-Chung Lin
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chian-Wei Chen
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jeng-Shiuan Tsai
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Xin-Min Liao
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan, 70403, Taiwan
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Tzu-Yi Chan
- Division of Chest Medicine, Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chi-Chang Shieh
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan, 70403, Taiwan.
- Department of Pediatrics, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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10
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Pahari S, Arnett E, Simper J, Azad A, Guerrero-Arguero I, Ye C, Zhang H, Cai H, Wang Y, Lai Z, Jarvis N, Lumbreras M, Maselli-Caceres DJ, Peters J, Torrelles JB, Martinez-Sobrido L, Schlesinger LS. A new tractable method for generating Human Alveolar Macrophage Like cells in vitro to study lung inflammatory processes and diseases. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.04.05.535806. [PMID: 37066199 PMCID: PMC10104118 DOI: 10.1101/2023.04.05.535806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
Alveolar macrophages (AMs) are unique lung resident cells that contact airborne pathogens and environmental particulates. The contribution of human AMs (HAM) to pulmonary diseases remains poorly understood due to difficulty in accessing them from human donors and their rapid phenotypic change during in vitro culture. Thus, there remains an unmet need for cost-effective methods for generating and/or differentiating primary cells into a HAM phenotype, particularly important for translational and clinical studies. We developed cell culture conditions that mimic the lung alveolar environment in humans using lung lipids, i.e. , Infasurf (calfactant, natural bovine surfactant) and lung-associated cytokines (GM-CSF, TGF-β, and IL-10) that facilitate the conversion of blood-obtained monocytes to an AM-Like (AML) phenotype and function in tissue culture. Similar to HAM, AML cells are particularly susceptible to both Mycobacterium tuberculosis and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections. This study reveals the importance of alveolar space components in the development and maintenance of HAM phenotype and function, and provides a readily accessible model to study HAM in infectious and inflammatory disease processes, as well as therapies and vaccines. IMPORTANCE Millions die annually from respiratory disorders. Lower respiratory track gas-exchanging alveoli maintain a precarious balance between fighting invaders and minimizing tissue damage. Key players herein are resident AMs. However, there are no easily accessible in vitro models of HAMs, presenting a huge scientific challenge. Here we present a novel model for generating AML cells based on differentiating blood monocytes in a defined lung component cocktail. This model is non-invasive, significantly less costly than performing a bronchoalveolar lavage, yields more AML cells than HAMs per donor and retains their phenotype in culture. We have applied this model to early studies of M. tuberculosis and SARS-CoV-2. This model will significantly advance respiratory biology research.
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Affiliation(s)
- Susanta Pahari
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Eusondia Arnett
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Jan Simper
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
- Department of Molecular Immunology and Microbiology, UT Health San Antonio, San Antonio, TX, USA
| | - Abul Azad
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Israel Guerrero-Arguero
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Chengjin Ye
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Hao Zhang
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious diseases, University of Texas at San Antonio, San Antonio, TX, USA
| | - Hong Cai
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious diseases, University of Texas at San Antonio, San Antonio, TX, USA
| | - Yufeng Wang
- Department of Molecular Microbiology and Immunology, South Texas Center for Emerging Infectious diseases, University of Texas at San Antonio, San Antonio, TX, USA
| | - Zhao Lai
- Department of Molecular Medicine, UT Health San Antonio, San Antonio, TX, USA
| | - Natalie Jarvis
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
- Department of Molecular Immunology and Microbiology, UT Health San Antonio, San Antonio, TX, USA
| | - Miranda Lumbreras
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | | | - Jay Peters
- Division of Pulmonary and Critical Care Medicine, UT Health Science Center, San Antonio, TX 78207
| | - Jordi B Torrelles
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Luis Martinez-Sobrido
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
| | - Larry S Schlesinger
- Host Pathogen Interactions and Population Health programs, Texas Biomedical Research Institute, San Antonio, TX, USA
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11
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Sivanantham A, Alktaish W, Murugeasan S, Gong B, Lee H, Jin Y. Caveolin-1 regulates OMV-induced macrophage pro-inflammatory activation and multiple Toll-like receptors. Front Immunol 2023; 14:1044834. [PMID: 36817491 PMCID: PMC9933776 DOI: 10.3389/fimmu.2023.1044834] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 01/20/2023] [Indexed: 02/05/2023] Open
Abstract
Macrophages (MФ), the primary cell of the innate immune system, serves as the first line of defense. During bacterial infection, Gram-negative (G-) bacteria release nanosized outer membrane vesicles (OMVs), facilitating the crosstalk between the microbe and the host. The underlying mechanisms by which OMVs induced pro-inflammatory (M1) activation are still unknown. Our study shows that OMVs caused M1 activation via modulating various toll-like receptor (TLR) expressions as they contain LPS, LTA, bacterial DNAs, and flagellins. Also, we found that caveolin-1 (cav-1), a 21-kDa scaffolding protein of caveolae and lipid rafts, plays a significant role in OMV-induced pro-inflammatory response in regulating various TLR signaling pathways. Specifically, cav-1 deletion increased the expression of OMV-induced TLRs, pro-inflammatory cytokine secretions (TNF-α and IL-1β), and the reactive oxygen species (ROS) production in MФs. Further, we examined the interaction between Cav-1 and TLR4 by immunoprecipitation, colocalization, and computational models, providing future direction to explore the role of cav-1 in OMV-induced other TLR signaling. Altogether, Cav-1 is a key regulator in OMV-induced multiple TLRs response. This study promotes future research to develop drugs by targeting the specific motif of cav-1 or TLRs against bacterial infection and macrophage-mediated inflammation.
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Affiliation(s)
- Ayyanar Sivanantham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, United States
| | - Ward Alktaish
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, United States
| | - Selvakumar Murugeasan
- Department of Chemical Engineering, Indian Institute of Technology, Tirupati, Andhra Pradesh, India
| | - Bin Gong
- Department of Pathology, University of Texas Medical Branch, Galveston, TX, United States
| | - Heedoo Lee
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, United States.,Department of Biology and Chemistry, Changwon National University, Changwon, Republic of Korea
| | - Yang Jin
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Boston University, Boston, MA, United States
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12
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Singh G, Martin Rumende C, Sharma SK, Rengganis I, Amin Z, Loho T, Hermiyanti E, Harimurti K, Wibowo H. Low BALF CD4 T cells count is associated with extubation failure and mortality in critically ill covid-19 pneumonia. Ann Med 2022; 54:1894-1905. [PMID: 35786088 PMCID: PMC9258432 DOI: 10.1080/07853890.2022.2095012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Critically ill COVID-19 pneumonia is one of the main causes of extubation failure and mortality. Understanding clinical characteristics, laboratory profiles and bronchoalveolar lavage fluid (BALF) immunopathology may help improve outcomes in critically ill COVID-19 pneumonia. We aimed to describe clinical characteristics, laboratory profiles and BALF immunopathology based on lung severity in critically ill COVID-19 pneumonia patients. MATERIALS AND METHODS Forty critically ill severe pneumonia patients requiring invasive mechanical ventilation in Cipto Mangunkusumo General (National Tertiary Referral Hospital), Indonesia within November 2020-January 2021 were enrolled in this study. Early BALF collection was performed after patients' intubation. Clinical characteristics, laboratory profiles and BALF biomarkers (sTREM-1, alveolar macrophage amount and function, IL-6, IL-17, CD4 T-cells, Tregs, SP-A and Caspase-3) were observed and analysed. Outcomes were measured based on extubation failure (within 19 days) and 28-days mortality. Univariate and bivariate analyses were performed. RESULTS Early bronchoscopy was performed in an average of 4 h (SD = 0.82) after patients' intubation. Twenty-three and twenty-two patients had extubation failure (within 19 days) and 28-days mortality, respectively. In the baseline clinical characteristics of critically ill COVID-19 patients, we found no significant differences in the extubation and mortality status groups. In the laboratory profiles of critically ill COVID-19 patients, we found no significant differences in the extubation status groups. In critically ill COVID-19 pneumonia patients, there was a significant high D-dimer levels in survived group (p = .027), a significant low BALF CD4 T-cells count in the right lung (p = .001) and a significant low BALF CD4 T-cells count (p = .010 and p = .018) in severely affected lung with extubation failure and mortality. CONCLUSIONS BALF CD4 T-cells count evaluation of severely affected lung is associated with early extubation failure and mortality in critically ill COVID-19 pneumonia patients. KEY MESSAGEFew studies have been conducted during the peak COVID-19 period analysing combined bronchoalveolar lavage fluid (BALF) immunopathology biomarkers within four hours of intubation to assess extubation failure and mortality. In this study, we reported eight BALF immunopathology biomarkers (sTREM-1, alveolar macrophage, IL-6, IL-17, CD4 T-cells, Tregs, SP-A and Caspase-3).We found significantly low BALF CD4 T-cells count in the right lung, and low BALF CD4 T-cells count in severely affected lung of critically ill COVID-19 pneumonia patients in extubation failure and mortality.
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Affiliation(s)
- Gurmeet Singh
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Cleopas Martin Rumende
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Surendra K Sharma
- Department of Molecular Medicine, Jamia Hamdard Institute of Molecular Medicine, Hamdard University, New Delhi, India.,Department of General Medicine & Pulmonary Medicine, JNMC, Datta Meghe Institute of Medical Science, New Delhi, India
| | - Iris Rengganis
- Department of Internal Medicine, Faculty of Medicine, Division of Allergy and Clinical Immunology, Universitas Indonesia, Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Zulkifli Amin
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Tonny Loho
- Department of Clinical Pathology, Faculty of Medicine, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Emmy Hermiyanti
- Department of Internal Medicine, Faculty of Medicine, Division of Respirology and Critical Illness, Universitas Padjadjaran, Dr Hasan Sadikin Hospital Bandung, Bandung, Indonesia
| | - Kuntjoro Harimurti
- Department of Internal Medicine, Faculty of Medicine, Division of Geriatrics, Universitas Indonesia - Cipto Mangunkusumo General Hospital, Jakarta, Indonesia
| | - Heri Wibowo
- Head of Integrated Laboratory, Faculty of Medicine, Universitas Indonesia, Jakarta, Indonesia
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13
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Zhu Y, Han Y, Almuntashiri S, Dutta S, Wang X, Owen CA, Zhang D. Dysregulation of miR-103a Mediates Cigarette Smoking-induced Lipid-laden Macrophage Formation. Am J Respir Cell Mol Biol 2022; 67:695-707. [PMID: 36066909 PMCID: PMC9743184 DOI: 10.1165/rcmb.2022-0202oc] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 09/02/2022] [Indexed: 12/15/2022] Open
Abstract
Cigarette smoke (CS) is considered a major risk factor for chronic obstructive pulmonary disease (COPD) that is currently the third leading cause of death in the United States. Studies have indicated that patients with COPD have elevated blood low-density lipoprotein levels, which may contribute to the dysregulation of lipid metabolism. Accumulating data show that microRNAs (miRNAs) are involved in various human diseases. However, the role of microRNAs in the pathogenesis of COPD remains poorly defined. In this study, we found that miR-103a expression was significantly reduced in alveolar macrophages from smokers and patients with COPD versus that in alveolar macrophages from nonsmokers. Our data indicated that reactive oxygen species negatively regulate miR-103a in macrophages. Functionally, miR-103a modulates the expressions of genes involved in lipid metabolism and directly targets low-density lipoprotein receptors in macrophages. Furthermore, overexpression of miR-103a suppressed the accumulation of lipid droplets and reduced the reactive oxygen species, both in vitro and in vivo. Taken together, our findings indicate that downregulation of miR-103a contributes to cigarette smoke-induced lipid-laden macrophage formation and plays a critical role in lipid homeostasis in lung macrophages in the pathogenesis of COPD.
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Affiliation(s)
- Yin Zhu
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Yohan Han
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Sultan Almuntashiri
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
- Department of Clinical Pharmacy, College of Pharmacy, University of Hail, Hail, Saudi Arabia
| | - Saugata Dutta
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Xiaoyun Wang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
| | - Caroline A. Owen
- Division of Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts; and
| | - Duo Zhang
- Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia and Charlie Norwood Veterans Affairs Medical Center, Augusta, Georgia
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia
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14
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Wu GR, Zhou M, Wang Y, Zhou Q, Zhang L, He L, Zhang S, Yu Q, Xu Y, Zhao J, Xiong W, Wang CY. Blockade of Mbd2 by siRNA-loaded liposomes protects mice against OVA-induced allergic airway inflammation via repressing M2 macrophage production. Front Immunol 2022; 13:930103. [PMID: 36090987 PMCID: PMC9453648 DOI: 10.3389/fimmu.2022.930103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
ObjectiveTo address the role of methyl-CpG-binding domain 2 (MBD2) in the pathogenesis of asthma and its potential as a target for the asthmatic therapy.MethodsStudies were conducted in asthmatic patients and macrophage-specific Mbd2 knockout mice to dissect the role of MBD2 in asthma pathogenesis. Additionally, RNAi-based therapy with Mbd2 siRNA-loaded liposomes was conducted in an ovalbumin (OVA)-induced allergic airway inflammation mouse model.ResultsAsthmatic patients and mice challenged with OVA exhibited upregulated MBD2 expression in macrophages, especially in alternatively activated (M2) macrophages. In particular, macrophage-specific knockout of Mbd2 protected mice from OVA-induced allergic airway inflammation and suppressed the M2 program. Notably, intratracheal administration of liposomes carrying Mbd2 siRNA decreased the expression of Mbd2 and prevented OVA-induced allergic airway inflammation in mice, as indicated by the attenuated airway inflammation and mucus production.ConclusionsThe above data indicate that Mbd2 implicates in the pathogenesis of asthma predominantly by regulating the polarization of M2 macrophages, which supports that Mbd2 could be a viable target for treatment of asthma in clinical settings.
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Affiliation(s)
- Guo-Rao Wu
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Min Zhou
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Yi Wang
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Qing Zhou
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Lei Zhang
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Long He
- Department of Clinical Laboratory, Shanghai East Hospital; School of Medicine, Tongji University, Shanghai, China
| | - Shu Zhang
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Qilin Yu
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Yongjian Xu
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Jianping Zhao
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
| | - Weining Xiong
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
- Department of Respiratory and Critical Care Medicine, Shanghai Key Laboratory of Tissue Engineering, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
- *Correspondence: Cong-Yi Wang, ; Weining Xiong,
| | - Cong-Yi Wang
- Department of Respiratory and Critical Care Medicine, The Center for Biomedical Research, NHC Key Laboratory of Respiratory Diseases, Tongji Hospital, Tongji Medical College, Huazhong University of Sciences and Technology, Wuhan, China
- *Correspondence: Cong-Yi Wang, ; Weining Xiong,
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15
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Matthaiou EI, Chiu W, Conrad C, Hsu J. Macrophage Lysosomal Alkalinization Drives Invasive Aspergillosis in a Mouse Cystic Fibrosis Model of Airway Transplantation. J Fungi (Basel) 2022; 8:751. [PMID: 35887506 PMCID: PMC9321820 DOI: 10.3390/jof8070751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 07/05/2022] [Accepted: 07/08/2022] [Indexed: 01/25/2023] Open
Abstract
Cystic fibrosis (CF) lung transplant recipients (LTRs) exhibit a disproportionately high rate of life-threatening invasive aspergillosis (IA). Loss of the cystic fibrosis transmembrane conductance regulator (CFTR-/-) in macrophages (mφs) has been associated with lyosomal alkalinization. We hypothesize that this alkalinization would persist in the iron-laden post-transplant microenvironment increasing the risk of IA. To investigate our hypothesis, we developed a murine CF orthotopic tracheal transplant (OTT) model. Iron levels were detected by immunofluorescence staining and colorimetric assays. Aspergillus fumigatus (Af) invasion was evaluated by Grocott methenamine silver staining. Phagocytosis and killing of Af conidia were examined by flow cytometry and confocal microscopy. pH and lysosomal acidification were measured by LysoSensorTM and LysotrackerTM, respectively. Af was more invasive in the CF airway transplant recipient compared to the WT recipient (p < 0.05). CFTR-/- mφs were alkaline at baseline, a characteristic that was increased with iron-overload. These CFTR-/- mφs were unable to phagocytose and kill Af conidia (p < 0.001). Poly(lactic-co-glycolic acid) (PLGA) nanoparticles acidified lysosomes, restoring the CFTR-/- mφs’ ability to clear conidia. Our results suggest that CFTR-/- mφs’ alkalinization interacts with the iron-loaded transplant microenvironment, decreasing the CF-mφs’ ability to kill Af conidia, which may explain the increased risk of IA. Therapeutic pH modulation after transplantation could decrease the risk of IA.
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Affiliation(s)
- Efthymia Iliana Matthaiou
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA; (E.I.M.); (W.C.)
| | - Wayland Chiu
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA; (E.I.M.); (W.C.)
- Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Carol Conrad
- Department of Pediatrics, Pulmonary Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA;
| | - Joe Hsu
- Department of Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA; (E.I.M.); (W.C.)
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16
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Thorenoor N, Floros J. The Lung Alveolar Cell (LAC) miRNome and Gene Expression Profile of the SP-A-KO Mice After Infection With and Without Rescue With Human Surfactant Protein-A2 (1A0). Front Immunol 2022; 13:854434. [PMID: 35844510 PMCID: PMC9283764 DOI: 10.3389/fimmu.2022.854434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Accepted: 05/24/2022] [Indexed: 11/13/2022] Open
Abstract
Human surfactant protein (SP)-A1 and SP-A2 exhibit differential qualitative and quantitative effects on the alveolar macrophage (AM), including a differential impact on the AM miRNome. Moreover, SP-A rescue (treatment) of SP-A-knockout (KO) infected mice impoves survival. Here, we studied for the first time the role of exogenous SP-A protein treatment on the regulation of lung alveolar cell (LAC) miRNome, the miRNA-RNA targets, and gene expression of SP-A-KO infected mice of both sexes. Toward this, SP-A-KO mice of both sexes were infected with Klebsiella pneumoniae, and half of them were also treated with SP-A2 (1A0). After 6 h of infection/SP-A treatment, the expression levels and pathways of LAC miRNAs, genes, and target miRNA-mRNAs were studied in both groups. We found 1) significant differences in the LAC miRNome, genes, and miRNA-mRNA targets in terms of sex, infection, and infection plus SP-A2 (1A0) protein rescue; 2) an increase in the majority of miRNA-mRNA targets in both study groups in KO male vs. female mice and involvement of the miRNA-mRNA targets in pathways of inflammation, antiapoptosis, and cell cycle; 3) genes with significant changes to be involved in TP-53, tumor necrosis factor (TNF), and cell cycle signaling nodes; 4) when significant changes in the expression of molecules from all analyses (miRNAs, miRNA-mRNA targets, and genes) were considered, two signaling pathways, the TNF and cell cycle, referred to as “integrated pathways” were shown to be significant; 5) the cell cycle pathway to be present in all comparisons made. Because SP-A could be used therapeutically in pulmonary diseases, it is important to understand the molecules and pathways involved in response to an SP-A acute treatment. The information obtained contributes to this end and may help to gain insight especially in the case of infection.
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Affiliation(s)
- Nithyananda Thorenoor
- Department of Pediatrics, College of Medicine, The Pennsylvania State University, Hershey, PA, United States
- Department of Biochemistry and Molecular Biology, College of Medicine, The Pennsylvania State University, Hershey, PA, United States
| | - Joanna Floros
- Department of Pediatrics, College of Medicine, The Pennsylvania State University, Hershey, PA, United States
- Department of Obstetrics and Gynecology, College of Medicine, The Pennsylvania State University, Hershey, PA, United States
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17
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Zhang J, Liu C, Zhao G, Li M, Ma D, Meng Q, Tang W, Huang Q, Shi P, Li Y, Jiang L, Yu X, Zhu H, Chen G, Zhang X. PM2.5 Synergizes With Pseudomonas aeruginosa to Suppress Alveolar Macrophage Function in Mice Through the mTOR Pathway. Front Pharmacol 2022; 13:924242. [PMID: 35800443 PMCID: PMC9253536 DOI: 10.3389/fphar.2022.924242] [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: 04/20/2022] [Accepted: 06/06/2022] [Indexed: 11/13/2022] Open
Abstract
High concentrations of PM2.5 in enclosed broiler houses cause respiratory disorders in humans and animals. Pseudomonas aeruginosa (P. aeruginosa) is an opportunistic pathogen that can induce severe respiratory disease in animals under stress or with abnormal immune functions. Alveolar macrophages are lung-resident immune cells that play important roles in lung host defence and immune balance. In this study, the mechanism by which PM2.5 synergizes with P. aeruginosa to damage alveolar macrophage function and induce inflammation was investigated. The results will provide a theoretical basis for improving the poultry breeding environment and preventing the recurrence of infection with P. aeruginosa. Alveolar macrophages were stimulated by PM2.5 collected in an enclosed broiler house and P. aeruginosa. Phagocytosis was determined by the neutral red test. The apoptosis rate and cytoskeleton changes were observed by flow cytometry assays and laser scanning confocal microscopy. Protein levels related to autophagy and the mTOR pathway were detected by Western blotting. The results indicated that PM2.5 in combination with P. aeruginosa could decrease phagocytosis, inhibit autophagy, increase apoptosis, and destroy the cytoskeleton in alveolar macrophages. In addition, alveolar macrophages had significantly increased expression of mTOR pathway-related proteins in response to the synergistic stimulation of PM2.5 and P. aeruginosa. The above results confirmed that PM2.5 in poultry houses synergized with P. aeruginosa to impede alveolar macrophage function and caused more severe respiratory system injuries through a process closely related to the activation of the mTOR signalling pathway.
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Affiliation(s)
- Jianlong Zhang
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
- Shandong Breeding Environmental Control Engineering Laboratory, Yantai, China
| | - Chong Liu
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
| | - Guangrong Zhao
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
- Shandong Breeding Environmental Control Engineering Laboratory, Yantai, China
| | - Meng Li
- School of Life Sciences, Ludong University, Yantai, China
| | - Di Ma
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
| | - Qingguo Meng
- School of Pharmacy, Yantai University, Yantai, China
| | - Wenli Tang
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
| | - Qingrong Huang
- School of Life Sciences, Ludong University, Yantai, China
- Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai, China
| | - Peimin Shi
- Linyi Central Blood Station, Linyi, China
| | - Youzhi Li
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
| | - Linlin Jiang
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
- Shandong Breeding Environmental Control Engineering Laboratory, Yantai, China
| | - Xin Yu
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
- Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai, China
| | - Hongwei Zhu
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Provincial Key Laboratory of Quality Safty Monitoring and Risk Assessment for Animal Products, Ji’nan, China
- Shandong Breeding Environmental Control Engineering Laboratory, Yantai, China
| | - Guozhong Chen
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Breeding Environmental Control Engineering Laboratory, Yantai, China
- Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai, China
| | - Xingxiao Zhang
- School of Life Sciences, Ludong University, Yantai, China
- Shandong Breeding Environmental Control Engineering Laboratory, Yantai, China
- Yantai Key Laboratory of Animal Pathogenetic Microbiology and Immunology, Yantai, China
- *Correspondence: Xingxiao Zhang,
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18
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Robinson EK, Worthington A, Poscablo D, Shapleigh B, Salih MM, Halasz H, Seninge L, Mosqueira B, Smaliy V, Forsberg EC, Carpenter S. lincRNA-Cox2 Functions to Regulate Inflammation in Alveolar Macrophages during Acute Lung Injury. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2022; 208:1886-1900. [PMID: 35365562 PMCID: PMC9038212 DOI: 10.4049/jimmunol.2100743] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 02/05/2022] [Indexed: 12/15/2022]
Abstract
Our respiratory system is vital to protect us from the surrounding nonsterile environment; therefore, it is critical for a state of homeostasis to be maintained through a balance of inflammatory cues. Recent studies have shown that actively transcribed noncoding regions of the genome are emerging as key regulators of biological processes, including inflammation. lincRNA-Cox2 is one such example of an inflammatory inducible long intergenic noncoding RNA functioning to fine-tune immune gene expression. Using bulk and single-cell RNA sequencing, in addition to FACS, we find that lincRNA-Cox2 is most highly expressed in the lung and is most upregulated after LPS-induced lung injury (acute lung injury [ALI]) within alveolar macrophages, where it functions to regulate inflammation. We previously reported that lincRNA-Cox2 functions to regulate its neighboring protein Ptgs2 in cis, and in this study, we use genetic mouse models to confirm its role in regulating gene expression more broadly in trans during ALI. Il6, Ccl3, and Ccl5 are dysregulated in the lincRNA-Cox2-deficient mice and can be rescued to wild type levels by crossing the deficient mice with our newly generated lincRNA-Cox2 transgenic mice, confirming that this gene functions in trans. Many genes are specifically regulated by lincRNA-Cox2 within alveolar macrophages originating from the bone marrow because the phenotype can be reversed by transplantation of wild type bone marrow into the lincRNA-Cox2-deficient mice. In conclusion, we show that lincRNA-Cox2 is a trans-acting long noncoding RNA that functions to regulate immune responses and maintain homeostasis within the lung at baseline and on LPS-induced ALI.
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Affiliation(s)
- Elektra Kantzari Robinson
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
| | - Atesh Worthington
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA;,Institute for the Biology of Stem Cells, University of California-Santa Cruz, Santa Cruz, CA; and
| | - Donna Poscablo
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA;,Institute for the Biology of Stem Cells, University of California-Santa Cruz, Santa Cruz, CA; and
| | - Barbara Shapleigh
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
| | - Mays Mohammed Salih
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
| | - Haley Halasz
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
| | - Lucas Seninge
- Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA
| | - Benny Mosqueira
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
| | - Valeriya Smaliy
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
| | - E. Camilla Forsberg
- Institute for the Biology of Stem Cells, University of California-Santa Cruz, Santa Cruz, CA; and,Department of Biomolecular Engineering, University of California Santa Cruz, Santa Cruz, CA
| | - Susan Carpenter
- Department of Molecular, Cell and Developmental Biology, University of California Santa Cruz, Santa Cruz, CA
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19
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Ahn JH, Park JY, Kim DY, Lee TS, Jung DH, Kim YJ, Lee YJ, Lee YJ, Seo IS, Song EJ, Jang AR, Yang SJ, Shin SJ, Park JH. Type I Interferons Are Involved in the Intracellular Growth Control of Mycobacterium abscessus by Mediating NOD2-Induced Production of Nitric Oxide in Macrophages. Front Immunol 2021; 12:738070. [PMID: 34777348 PMCID: PMC8581665 DOI: 10.3389/fimmu.2021.738070] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 09/30/2021] [Indexed: 12/20/2022] Open
Abstract
Mycobacterium abscessus (MAB) is one of the rapidly growing, multidrug-resistant non-tuberculous mycobacteria (NTM) causing various diseases including pulmonary disorder. Although it has been known that type I interferons (IFNs) contribute to host defense against bacterial infections, the role of type I IFNs against MAB infection is still unclear. In the present study, we show that rIFN-β treatment reduced the intracellular growth of MAB in macrophages. Deficiency of IFN-α/β receptor (IFNAR) led to the reduction of nitric oxide (NO) production in MAB-infected macrophages. Consistently, rIFN-β treatment enhanced the expression of iNOS gene and protein, and NO production in response to MAB. We also found that NO is essential for the intracellular growth control of MAB within macrophages in an inhibitor assay using iNOS-deficient cells. In addition, pretreatment of rIFN-β before MAB infection in mice increased production of NO in the lungs at day 1 after infection and promoted the bacterial clearance at day 5. However, when alveolar macrophages were depleted by treatment of clodronate liposome, rIFN-β did not promote the bacterial clearance in the lungs. Moreover, we found that a cytosolic receptor nucleotide-binding oligomerization domain 2 (NOD2) is required for MAB-induced TANK binding kinase 1 (TBK1) phosphorylation and IFN-β gene expression in macrophages. Finally, increase in the bacterial loads caused by reduction of NO levels was reversed by rIFN-β treatment in the lungs of NOD2-deficient mice. Collectively, our findings suggest that type I IFNs act as an intermediator of NOD2-induced NO production in macrophages and thus contribute to host defense against MAB infection.
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MESH Headings
- Animals
- Cells, Cultured
- Disease Models, Animal
- Female
- Host-Pathogen Interactions
- Interferon Type I/metabolism
- Lung/immunology
- Lung/metabolism
- Lung/microbiology
- Macrophages, Alveolar/immunology
- Macrophages, Alveolar/metabolism
- Macrophages, Alveolar/microbiology
- Male
- Mice, Inbred C57BL
- Mice, Knockout
- Mycobacterium Infections, Nontuberculous/immunology
- Mycobacterium Infections, Nontuberculous/metabolism
- Mycobacterium Infections, Nontuberculous/microbiology
- Mycobacterium abscessus/growth & development
- Mycobacterium abscessus/immunology
- Mycobacterium abscessus/metabolism
- Nitric Oxide/metabolism
- Nitric Oxide Synthase Type II/genetics
- Nitric Oxide Synthase Type II/metabolism
- Nod2 Signaling Adaptor Protein/genetics
- Nod2 Signaling Adaptor Protein/metabolism
- Receptor, Interferon alpha-beta/genetics
- Receptor, Interferon alpha-beta/metabolism
- Signal Transduction
- Mice
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Affiliation(s)
- Jae-Hun Ahn
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Ji-Yeon Park
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Dong-Yeon Kim
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Tae-Sung Lee
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Do-Hyeon Jung
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Yeong-Jun Kim
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Yeon-Ji Lee
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Yun-Ji Lee
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - In-Su Seo
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Eun-Jung Song
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Ah-Ra Jang
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
| | - Soo-Jin Yang
- Department of Veterinary Microbiology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, South Korea
| | - Sung Jae Shin
- Department of Microbiology, Institute for Immunology and Immunological Diseases, Brain Korea 21 PLUS Project for Medical Science, Yonsei University College of Medicine, Seoul, South Korea
| | - Jong-Hwan Park
- Laboratory Animal Medicine, College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, South Korea
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20
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Sun Q, Luo M, Gao Z, Han X, Wu W, Zhao H. Long non-coding RNA OIP5-AS1 aggravates acute lung injury by promoting inflammation and cell apoptosis via regulating the miR-26a-5p/TLR4 axis. BMC Pulm Med 2021; 21:236. [PMID: 34261477 PMCID: PMC8281572 DOI: 10.1186/s12890-021-01589-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 06/13/2021] [Indexed: 12/03/2022] Open
Abstract
Background Acute lung injury (ALI) is a pulmonary disorder that leads to acute respiration failure and thereby results in a high mortality worldwide. Increasing studies have indicated that toll-like receptor 4 (TLR4) is a promoter in ALI, and we aimed to explore the underlying upstream mechanism of TLR4 in ALI. Methods We used lipopolysaccharide (LPS) to induce an acute inflammatory response in vitro model and a murine mouse model. A wide range of experiments including reverse transcription quantitative polymerase chain reaction, western blot, enzyme linked immunosorbent assay, flow cytometry, hematoxylin–eosin staining, RNA immunoprecipitation, luciferase activity and caspase-3 activity detection assays were conducted to figure out the expression status, specific role and potential upstream mechanism of TLR4 in ALI. Result TLR4 expression was upregulated in ALI mice and LPS-treated primary bronchial/tracheal epithelial cells. Moreover, miR-26a-5p was confirmed to target TLR4 according to results of luciferase reporter assay. In addition, miR-26a-5p overexpression decreased the contents of proinflammatory factors and inhibited cell apoptosis, while upregulation of TLR4 reversed these effects of miR-26a-5p mimics, implying that miR-26a-5p alleviated ALI by regulating TLR4. Afterwards, OPA interacting protein 5 antisense RNA 1 (OIP5-AS1) was identified to bind with miR-26a-5p. Functionally, OIP5-AS1 upregulation promoted the inflammation and miR-26a-5p overexpression counteracted the influence of OIP5-AS1 upregulation on cell inflammatory response and apoptosis. Conclusion OIP5-AS1 promotes ALI by regulating the miR-26a-5p/TLR4 axis in ALI mice and LPS-treated cells, which indicates a promising insight into diagnostics and therapeutics in ALI. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01589-1.
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Affiliation(s)
- Qingsong Sun
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Man Luo
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Zhiwei Gao
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Xiang Han
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Weiqin Wu
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China
| | - Hongmei Zhao
- Department of Emergency, The Affiliated Huaian No.1 People's Hospital of Nanjing Medical University, No. 1, Huanghe West Road, Huaiyin District, Huaian, 223300, Jiangsu, China.
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21
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Barron SL, Saez J, Owens RM. In Vitro Models for Studying Respiratory Host-Pathogen Interactions. Adv Biol (Weinh) 2021; 5:e2000624. [PMID: 33943040 PMCID: PMC8212094 DOI: 10.1002/adbi.202000624] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/23/2021] [Indexed: 12/22/2022]
Abstract
Respiratory diseases and lower respiratory tract infections are among the leading cause of death worldwide and, especially given the recent severe acute respiratory syndrome coronavirus-2 pandemic, are of high and prevalent socio-economic importance. In vitro models, which accurately represent the lung microenvironment, are of increasing significance given the ethical concerns around animal work and the lack of translation to human disease, as well as the lengthy time to market and the attrition rates associated with clinical trials. This review gives an overview of the biological and immunological components involved in regulating the respiratory epithelium system in health, disease, and infection. The evolution from 2D to 3D cell biology and to more advanced technological integrated models for studying respiratory host-pathogen interactions are reviewed and provide a reference point for understanding the in vitro modeling requirements. Finally, the current limitations and future perspectives for advancing this field are presented.
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Affiliation(s)
- Sarah L. Barron
- Bioassay Impurities and QualityBiopharmaceuticals DevelopmentR&DAstraZenecaCambridgeCB21 6GPUK
- Department of Chemical Engineering and BiotechnologyPhilippa Fawcett DriveCambridgeCB3 0ASUK
| | - Janire Saez
- Department of Chemical Engineering and BiotechnologyPhilippa Fawcett DriveCambridgeCB3 0ASUK
| | - Róisín M. Owens
- Department of Chemical Engineering and BiotechnologyPhilippa Fawcett DriveCambridgeCB3 0ASUK
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22
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Imaging NAD(H) Redox Alterations in Cryopreserved Alveolar Macrophages from Ozone-Exposed Mice and the Impact of Nutrient Starvation during Long Lag Times. Antioxidants (Basel) 2021; 10:antiox10050767. [PMID: 34065846 PMCID: PMC8151465 DOI: 10.3390/antiox10050767] [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] [Received: 04/14/2021] [Revised: 04/29/2021] [Accepted: 05/09/2021] [Indexed: 12/17/2022] Open
Abstract
Employing the optical redox imaging technique, we previously identified a significant redox shift of nicotinamide adenine dinucleotide (NAD and the reduced form NADH) in freshly isolated alveolar macrophages (AM) from ozone-exposed mice. The goal here was twofold: (a) to determine the NAD(H) redox shift in cryopreserved AM isolated from ozone-exposed mice and (b) to investigate whether there is a difference in the redox status between cryopreserved and freshly isolated AM. We found: (i) AM from ozone-exposed mice were in a more oxidized redox state compared to that from filtered air (FA)-exposed mice, consistent with the results obtained from freshly isolated mouse AM; (ii) under FA exposure, there was no significant NAD(H) redox difference between fresh AM that had been placed on ice for 2.5 h and cryopreserved AM; however, under ozone exposure, fresh AM were more oxidized than cryopreserved AM; (iii) via the use of nutrient starvation and replenishment and H2O2-induced oxidative stress of an AM cell line, we showed that this redox difference between cryopreserved and freshly isolated AM is likely the result of the double “hit”, i.e., the ozone-induced oxidative stress plus nutrient starvation that prevented freshly isolated AM from a full recovery after being on ice for a prolonged time period. The cryopreservation technique we developed eliminates/minimizes the effects of oxidative stress and nutrient starvation on cells. This method can be adopted to preserve lung macrophages from animal models or clinical patients for further investigations.
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23
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Hatinguais R, Pradhan A, Brown GD, Brown AJP, Warris A, Shekhova E. Mitochondrial Reactive Oxygen Species Regulate Immune Responses of Macrophages to Aspergillus fumigatus. Front Immunol 2021; 12:641495. [PMID: 33841423 PMCID: PMC8026890 DOI: 10.3389/fimmu.2021.641495] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 03/09/2021] [Indexed: 12/21/2022] Open
Abstract
Reactive Oxygen Species (ROS) are highly reactive molecules that can induce oxidative stress. For instance, the oxidative burst of immune cells is well known for its ability to inhibit the growth of invading pathogens. However, ROS also mediate redox signalling, which is important for the regulation of antimicrobial immunity. Here, we report a crucial role of mitochondrial ROS (mitoROS) in antifungal responses of macrophages. We show that mitoROS production rises in murine macrophages exposed to swollen conidia of the fungal pathogen Aspergillus fumigatus compared to untreated macrophages, or those treated with resting conidia. Furthermore, the exposure of macrophages to swollen conidia increases the activity of complex II of the respiratory chain and raises mitochondrial membrane potential. These alterations in mitochondria of infected macrophages suggest that mitoROS are produced via reverse electron transport (RET). Significantly, preventing mitoROS generation via RET by treatment with rotenone, or a suppressor of site IQ electron leak, S1QEL1.1, lowers the production of pro-inflammatory cytokines TNF-α and IL-1β in macrophages exposed to swollen conidia of A. fumigatus. Rotenone and S1QEL1.1 also reduces the fungicidal activity of macrophages against swollen conidia. Moreover, we have established that elevated recruitment of NADPH oxidase 2 (NOX2, also called gp91phox) to the phagosomal membrane occurs prior to the increase in mitoROS generation. Using macrophages from gp91phox-/- mice, we have further demonstrated that NOX2 is required to regulate cytokine secretion by RET-associated mitoROS in response to infection with swollen conidia. Taken together, these observations demonstrate the importance of RET-mediated mitoROS production in macrophages infected with A. fumigatus.
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Affiliation(s)
| | | | | | | | | | - Elena Shekhova
- Medical Research Council Centre for Medical Mycology at the University of Exeter, Geoffrey Pope Building, University of Exeter, Exeter, United Kingdom
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24
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Suwankitwat N, Libby S, Liggitt HD, Avalos A, Ruddell A, Rosch JW, Park H, Iritani BM. The actin-regulatory protein Hem-1 is essential for alveolar macrophage development. J Exp Med 2021; 218:211806. [PMID: 33600594 PMCID: PMC7894047 DOI: 10.1084/jem.20200472] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 09/16/2020] [Accepted: 01/13/2021] [Indexed: 01/27/2023] Open
Abstract
Hematopoietic protein-1 (Hem-1) is a hematopoietic cell–specific actin-regulatory protein. Loss-of-function (LOF) variants in the NCKAP1L gene encoding Hem-1 have recently been found to result in primary immunodeficiency disease (PID) in humans, characterized by recurring respiratory infections, asthma, and high mortality. However, the mechanisms of how Hem-1 variants result in PID are not known. In this study, we generated constitutive and myeloid cell–specific Nckap1l-KO mice to dissect the importance of Hem-1 in lung immunity. We found that Hem-1–deficient mice accumulated excessive surfactant and cell debris in airways (pulmonary alveolar proteinosis) due to impaired development of alveolar macrophages (AMs) and reduced expression of the AM differentiation factor Pparg. Residual Hem-1–deficient AMs shifted to a proinflammatory phenotype, and Hem-1–deficient neutrophils and monocytes failed to migrate normally. Myeloid cell–specific Hem-1–deficient mice exhibited increased morbidity following influenza A virus or Streptococcus pneumoniae challenge. These results provide potential mechanisms for how LOF variants in Hem-1 result in recurring respiratory diseases.
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Affiliation(s)
| | - Stephen Libby
- Department of Microbiology, University of Washington, Seattle, WA
| | - H Denny Liggitt
- Department of Comparative Medicine, University of Washington, Seattle, WA
| | - Alan Avalos
- Department of Comparative Medicine, University of Washington, Seattle, WA
| | - Alanna Ruddell
- Department of Comparative Medicine, University of Washington, Seattle, WA
| | - Jason W Rosch
- Department of Infectious Diseases, St. Jude Children's Research Hospital, Memphis, TN
| | - Heon Park
- Department of Comparative Medicine, University of Washington, Seattle, WA
| | - Brian M Iritani
- Department of Comparative Medicine, University of Washington, Seattle, WA
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25
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Xu M, Yang W, Wang X, Nayak DK. Lung Secretoglobin Scgb1a1 Influences Alveolar Macrophage-Mediated Inflammation and Immunity. Front Immunol 2020; 11:584310. [PMID: 33117399 PMCID: PMC7558713 DOI: 10.3389/fimmu.2020.584310] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/07/2020] [Indexed: 01/23/2023] Open
Abstract
Alveolar macrophage (AM) is a mononuclear phagocyte key to the defense against respiratory infections. To understand AM’s role in airway disease development, we examined the influence of Secretoglobin family 1a member 1 (SCGB1A1), a pulmonary surfactant protein, on AM development and function. In a murine model, high-throughput RNA-sequencing and gene expression analyses were performed on purified AMs isolated from mice lacking in Scgb1a1 gene and were compared with that from mice expressing the wild type Scgb1a1 at weaning (4 week), puberty (8 week), early adult (12 week), and middle age (40 week). AMs from early adult mice under Scgb1a1 sufficiency demonstrated a total of 37 up-regulated biological pathways compared to that at weaning, from which 30 were directly involved with antigen presentation, anti-viral immunity and inflammation. Importantly, these pathways under Scgb1a1 deficiency were significantly down-regulated compared to that in the age-matched Scgb1a1-sufficient counterparts. Furthermore, AMs from Scgb1a1-deficient mice showed an early activation of inflammatory pathways compared with that from Scgb1a1-sufficient mice. Our in vitro experiments with AM culture established that exogenous supplementation of SCGB1a1 protein significantly reduced AM responses to microbial stimuli where SCGB1a1 was effective in blunting the release of cytokines and chemokines (including IL-1b, IL-6, IL-8, MIP-1a, TNF-a, and MCP-1). Taken together, these findings suggest an important role for Scgb1a1 in shaping the AM-mediated inflammation and immune responses, and in mitigating cytokine surges in the lungs.
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Affiliation(s)
- Min Xu
- Department of Surgery, Washington University School of Medicine, St. Louis, MO, United States
| | - Wei Yang
- Department of Genetics, Washington University School of Medicine, St. Louis, MO, United States
| | - Xuanchuan Wang
- Department of Urology, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Deepak Kumar Nayak
- Interdisciplinary Oncology, University of Arizona College of Medicine, Phoenix, AZ, United States
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26
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Fighting Persistence: How Chronic Infections with Mycobacterium tuberculosis Evade T Cell-Mediated Clearance and New Strategies To Defeat Them. Infect Immun 2020; 88:IAI.00916-19. [PMID: 32094248 DOI: 10.1128/iai.00916-19] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Chronic bacterial infections are caused by pathogens that persist within their hosts and avoid clearance by the immune system. Treatment and/or detection of such pathogens is difficult, and the resulting pathologies are often deleterious or fatal. There is an urgent need to develop protective vaccines and host-directed therapies that synergize with antibiotics to prevent pathogen persistence and infection-associated pathologies. However, many persistent pathogens, such as Mycobacterium tuberculosis, actively target the very host pathways activated by vaccination. These immune evasion tactics blunt the effectiveness of immunization strategies and are impeding progress to control these infections throughout the world. Therefore, it is essential that M. tuberculosis immune evasion-related pathogen virulence strategies are considered to maximize the effectiveness of potential new treatments. In this review, we focus on how Mycobacterium tuberculosis infects antigen-presenting cells and evades effective immune clearance by the adaptive response through (i) manipulating antigen presentation, (ii) repressing T cell-activating costimulatory molecules, and (iii) inducing ligands that drive T cell exhaustion. In this context, we will examine the challenges that bacterial virulence strategies pose to developing new vaccines. We will then discuss new approaches that will help dissect M. tuberculosis immune evasion mechanisms and devise strategies to bypass them to promote long-term protection and prevent disease progression.
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27
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O’Beirne SL, Kikkers SA, Oromendia C, Salit J, Rostmai MR, Ballman KV, Kaner RJ, Crystal RG, Cloonan SM. Alveolar Macrophage Immunometabolism and Lung Function Impairment in Smoking and Chronic Obstructive Pulmonary Disease. Am J Respir Crit Care Med 2020; 201:735-739. [PMID: 31751151 PMCID: PMC7068819 DOI: 10.1164/rccm.201908-1683le] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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28
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Hodge MX, Reece SW, Madenspacher JH, Gowdy KM. In Vivo Assessment of Alveolar Macrophage Efferocytosis Following Ozone Exposure. J Vis Exp 2019. [PMID: 31710036 DOI: 10.3791/60109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Ozone (O3) is a criteria air pollutant that exacerbates and increases the incidence of chronic pulmonary diseases. O3 exposure is known to induce pulmonary inflammation, but little is known regarding how exposure alters processes important to the resolution of inflammation. Efferocytosis is a resolution process, whereby macrophages phagocytize apoptotic cells. The purpose of this protocol is to measure alveolar macrophage efferocytosis following O3-induced lung injury and inflammation. Several methods have been described for measuring efferocytosis; however, most require ex vivo manipulations. Described in detail here is a protocol to measure in vivo alveolar macrophage efferocytosis 24 h after O3 exposure, which avoids ex vivo manipulation of macrophages and serves as a simple technique that can be used to accurately represent perturbations in this resolution process. The protocol is a technically non-intensive and relatively inexpensive method that involves whole-body O3 inhalation followed by oropharyngeal aspiration of apoptotic cells (i.e., Jurkat T cells) while under general anesthesia. Alveolar macrophage efferocytosis is then measured by light microscopy evaluation of macrophages collected from bronchoalveolar (BAL) lavage. Efferocytosis is finally measured by calculating an efferocytic index. Collectively, the outlined methods quantify efferocytic activity in the lung in vivo while also serving to analyze the negative health effects of O3 or other inhaled insults.
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Affiliation(s)
- Myles X Hodge
- Department of Pharmacology and Toxicology, East Carolina University
| | - Sky W Reece
- Department of Pharmacology and Toxicology, East Carolina University
| | | | - Kymberly M Gowdy
- Department of Pharmacology and Toxicology, East Carolina University;
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