1
|
Molinari G, Molinari L, Nervo E. Environmental and Endogenous Acids Can Trigger Allergic-Type Airway Reactions. Int J Environ Res Public Health 2020; 17:E4688. [PMID: 32610702 PMCID: PMC7370125 DOI: 10.3390/ijerph17134688] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 06/20/2020] [Accepted: 06/25/2020] [Indexed: 12/13/2022]
Abstract
Inflammatory allergic and nonallergic respiratory disorders are spreading worldwide and often coexist. The root cause is not clear. This review demonstrates that, from a biochemical point of view, it is ascribable to protons (H+) released into cells by exogenous and endogenous acids. The hypothesis of acids as the common cause stems from two considerations: (a) it has long been known that exogenous acids present in air pollutants can induce the irritation of epithelial surfaces, particularly the airways, inflammation, and bronchospasm; (b) according to recent articles, endogenous acids, generated in cells by phospholipases, play a key role in the biochemical mechanisms of initiation and progression of allergic-type reactions. Therefore, the intracellular acidification and consequent Ca2+ increase, induced by protons generated by either acid pollutants or endogenous phospholipases, may constitute the basic mechanism of the multimorbidity of these disorders, and environmental acidity may contribute to their spread.
Collapse
Affiliation(s)
- Giuliano Molinari
- Studio Tecnico Ing. Laura Molinari, Environmental Health and Safety Via Quarto Ponte 17, 37138 Verona, Italy;
| | - Laura Molinari
- Studio Tecnico Ing. Laura Molinari, Environmental Health and Safety Via Quarto Ponte 17, 37138 Verona, Italy;
| | - Elsa Nervo
- Elsa Nervo, Società Chimica Italiana, 00198 Rome, Italy;
| |
Collapse
|
2
|
Abstract
The pathophysiological roles of mast cells are still not fully understood, over 140 years since their description by Paul Ehrlich in 1878. Initial studies have attempted to identify distinct "subpopulations" of mast cells based on a relatively small number of biochemical characteristics. More recently, "subtypes" of mast cells have been described based on the analysis of transcriptomes of anatomically distinct mouse mast cell populations. Although mast cells can potently alter homeostasis, in certain circumstances, these cells can also contribute to the restoration of homeostasis. Both solid and hematologic tumors are associated with the accumulation of peritumoral and/or intratumoral mast cells, suggesting that these cells can help to promote and/or limit tumorigenesis. We suggest that at least two major subsets of mast cells, MC1 (meaning anti-tumorigenic) and MC2 (meaning pro-tumorigenic), and/or different mast cell mediators derived from otherwise similar cells, could play distinct or even opposite roles in tumorigenesis. Mast cells are also strategically located in the human myocardium, in atherosclerotic plaques, in close proximity to nerves and in the aortic valve. Recent studies have revealed evidence that cardiac mast cells can participate both in physiological and pathological processes in the heart. It seems likely that different subsets of mast cells, like those of cardiac macrophages, can exert distinct, even opposite, effects in different pathophysiological processes in the heart. In this chapter, we have commented on possible future needs of the ongoing efforts to identify the diverse functions of mast cells in health and disease.
Collapse
Affiliation(s)
- Gilda Varricchi
- Department of Translational Medical Sciences (DISMET), University of Naples Federico II, 80138 Naples, Italy.
- Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, School of Medicine, 80138 Naples, Italy.
- WAO Center of Excellence, 80138 Naples, Italy.
| | - Amato de Paulis
- Department of Translational Medical Sciences (DISMET), University of Naples Federico II, 80138 Naples, Italy.
- Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, School of Medicine, 80138 Naples, Italy.
- WAO Center of Excellence, 80138 Naples, Italy.
| | - Gianni Marone
- Department of Translational Medical Sciences (DISMET), University of Naples Federico II, 80138 Naples, Italy.
- Center for Basic and Clinical Immunology Research (CISI), University of Naples Federico II, School of Medicine, 80138 Naples, Italy.
- WAO Center of Excellence, 80138 Naples, Italy.
- Institute of Experimental Endocrinology and Oncology "Gaetano Salvatore" (IEOS), National Research Council (CNR), 80138 Naples, Italy.
| | - Stephen J Galli
- Departments of Pathology and of Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA 94305-5176, USA.
| |
Collapse
|
3
|
Caslin HL, Taruselli MT, Haque T, Pondicherry N, Baldwin EA, Barnstein BO, Ryan JJ. Inhibiting Glycolysis and ATP Production Attenuates IL-33-Mediated Mast Cell Function and Peritonitis. Front Immunol 2018; 9:3026. [PMID: 30619366 PMCID: PMC6305324 DOI: 10.3389/fimmu.2018.03026] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Accepted: 12/06/2018] [Indexed: 01/04/2023] Open
Abstract
Cellular metabolism and energy sensing pathways are closely linked to inflammation, but there is little understanding of how these pathways affect mast cell function. Mast cells are major effectors of allergy and asthma, and can be activated by the alarmin IL-33, which is linked to allergic disease. Therefore, we investigated the metabolic requirements for IL-33-induced mast cell function, to identify targets for controlling inflammation. We found that IL-33 increases glycolysis, glycolytic protein expression, and oxidative phosphorylation (OX PHOS). Inhibiting OX PHOS had little effect on cytokine production, but antagonizing glycolysis with 2-deoxyglucose or oxamate suppressed inflammatory cytokine production in vitro and in vivo. ATP reversed this suppression. Glycolytic blockade suppressed IL-33 signaling, including ERK phosphorylation, NFκB transcription, and ROS production in vitro, and suppressed IL-33-induced neutrophil recruitment in vivo. To test a clinically relevant way to modulate these pathways, we examined the effects of the FDA-approved drug metformin on IL-33 activation. Metformin activates AMPK, which suppresses glycolysis in immune cells. We found that metformin suppressed cytokine production in vitro and in vivo, effects that were reversed by ATP, mimicking the actions of the glycolytic inhibitors we tested. These data suggest that glycolytic ATP production is important for IL-33-induced mast cell activation, and that targeting this pathway may be useful in allergic disease.
Collapse
Affiliation(s)
- Heather L Caslin
- VCU Life Sciences, Virginia Commonwealth University, Richmond, VA, United States.,Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - Marcela T Taruselli
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - Tamara Haque
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - Neha Pondicherry
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - Elizabeth A Baldwin
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - Brian O Barnstein
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| | - John J Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA, United States
| |
Collapse
|
4
|
Koga Y, Hisada T, Ishizuka T, Utsugi M, Ono A, Yatomi M, Kamide Y, Aoki-Saito H, Tsurumaki H, Dobashi K, Yamada M. CREB regulates TNF-α-induced GM-CSF secretion via p38 MAPK in human lung fibroblasts. Allergol Int 2016; 65:406-413. [PMID: 27118435 DOI: 10.1016/j.alit.2016.03.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/13/2016] [Accepted: 03/15/2016] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Granulocyte-macrophage colony-stimulating factor (GM-CSF) is a cytokine that mediates eosinophilic differentiation, migration and survival, causing respiratory tract inflammation. GM-CSF is also known to be secreted from respiratory tract structural cells. However, the mechanisms of GM-CSF secretion have not been well established. METHODS Human fetal lung fibroblasts and human primary asthmatic lung fibroblasts were used for the study of tumor necrosis factor alpha (TNF-α)-induced GM-CSF secretion. GM-CSF secretion and mRNA expression were measured by enzyme-linked immunosorbent assay and quantitative real-time reverse transcription polymerase chain reaction, respectively. Knockdown of cAMP response element-binding protein (CREB) in fibroblasts was carried out by using specific small interfering RNAs of CREB. RESULTS Among respiratory tract structural cells, pulmonary fibroblasts exhibited increased GM-CSF secretion and mRNA expression after stimulation with TNF-α in a concentration-dependent manner. Moreover, a p38 mitogen-activated protein kinase (MAPK) inhibitor controlled TNF-α-induced GM-CSF secretion, and roflumilast and rolipram, inhibitors of phosphodiesterase-4, suppressed TNF-α-induced GM-CSF secretion. Consistent with this, forskolin also completely blocked GM-CSF secretion, and similar results were observed in response to cAMP treatment, suggesting that cAMP signaling suppressed TNF-α-induced GM-CSF secretion in human lung fibroblasts. Furthermore, CREB was phosphorylated through p38 MAPK but not cAMP signaling after TNF-α stimulation, and GM-CSF secretion was inhibited by CREB knockdown. Finally, these effects were also demonstrated in human primary lung fibroblasts in a patient with asthma. CONCLUSIONS CREB signaled independent of cAMP signaling and was phosphorylated by p38 MAPK following TNF-α stimulation, playing a critical role in GM-CSF secretion in human lung fibroblasts.
Collapse
Affiliation(s)
- Yasuhiko Koga
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan.
| | - Takeshi Hisada
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Tamotsu Ishizuka
- Third Department of Internal Medicine, Faculty of Medical Sciences, University of Fukui, Fukui, Japan
| | - Mitsuyoshi Utsugi
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan; Department of Respiratory Medicine, Kiryu Kosei General Hospital, Gunma, Japan
| | - Akihiro Ono
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Masakiyo Yatomi
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Yosuke Kamide
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan; Clinical Research Center for Allergy and Rheumatology, Sagamihara National Hospital, Kanagawa, Japan
| | - Haruka Aoki-Saito
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Hiroaki Tsurumaki
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
| | - Kunio Dobashi
- Gunma University Graduate School of Health Sciences, Gunma, Japan
| | - Masanobu Yamada
- Department of Medicine and Molecular Science, Gunma University Graduate School of Medicine, Gunma, Japan
| |
Collapse
|
5
|
Abebayehu D, Spence AJ, Qayum AA, Taruselli MT, McLeod JJA, Caslin HL, Chumanevich AP, Kolawole EM, Paranjape A, Baker B, Ndaw VS, Barnstein BO, Oskeritzian CA, Sell SA, Ryan JJ. Lactic Acid Suppresses IL-33-Mediated Mast Cell Inflammatory Responses via Hypoxia-Inducible Factor-1α-Dependent miR-155 Suppression. J Immunol 2016; 197:2909-17. [PMID: 27559047 DOI: 10.4049/jimmunol.1600651] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Accepted: 07/28/2016] [Indexed: 01/02/2023]
Abstract
Lactic acid (LA) is present in tumors, asthma, and wound healing, environments with elevated IL-33 and mast cell infiltration. Although IL-33 is a potent mast cell activator, how LA affects IL-33-mediated mast cell function is unknown. To investigate this, mouse bone marrow-derived mast cells were cultured with or without LA and activated with IL-33. LA reduced IL-33-mediated cytokine and chemokine production. Using inhibitors for monocarboxylate transporters (MCT) or replacing LA with sodium lactate revealed that LA effects are MCT-1- and pH-dependent. LA selectively altered IL-33 signaling, suppressing TGF-β-activated kinase-1, JNK, ERK, and NF-κB phosphorylation, but not p38 phosphorylation. LA effects in other contexts have been linked to hypoxia-inducible factor (HIF)-1α, which was enhanced in bone marrow-derived mast cells treated with LA. Because HIF-1α has been shown to regulate the microRNA miR-155 in other systems, LA effects on miR-155-5p and miR-155-3p species were measured. In fact, LA selectively suppressed miR-155-5p in an HIF-1α-dependent manner. Moreover, overexpressing miR-155-5p, but not miR-155-3p, abolished LA effects on IL-33-induced cytokine production. These in vitro effects of reducing cytokines were consistent in vivo, because LA injected i.p. into C57BL/6 mice suppressed IL-33-induced plasma cytokine levels. Lastly, IL-33 effects on primary human mast cells were suppressed by LA in an MCT-dependent manner. Our data demonstrate that LA, present in inflammatory and malignant microenvironments, can alter mast cell behavior to suppress inflammation.
Collapse
Affiliation(s)
- Daniel Abebayehu
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA 23284
| | - Andrew J Spence
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Amina Abdul Qayum
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | | | - Jamie J A McLeod
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Heather L Caslin
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Alena P Chumanevich
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC 29208; and
| | | | - Anuya Paranjape
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Bianca Baker
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Victor S Ndaw
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Brian O Barnstein
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284
| | - Carole A Oskeritzian
- Department of Pathology, Microbiology, and Immunology, University of South Carolina School of Medicine, Columbia, SC 29208; and
| | - Scott A Sell
- Department of Biomedical Engineering, Saint Louis University, St. Louis, MO 63103
| | - John J Ryan
- Department of Biology, Virginia Commonwealth University, Richmond, VA 23284;
| |
Collapse
|