1
|
Mohamud R, LeMasurier JS, Boer JC, Sieow JL, Rolland JM, O'Hehir RE, Hardy CL, Plebanski M. Synthetic Nanoparticles That Promote Tumor Necrosis Factor Receptor 2 Expressing Regulatory T Cells in the Lung and Resistance to Allergic Airways Inflammation. Front Immunol 2017; 8:1812. [PMID: 29312323 PMCID: PMC5744007 DOI: 10.3389/fimmu.2017.01812] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [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: 09/04/2017] [Accepted: 12/01/2017] [Indexed: 12/28/2022] Open
Abstract
Synthetic glycine coated 50 nm polystyrene nanoparticles (NP) (PS50G), unlike ambient NP, do not promote pulmonary inflammation, but instead, render lungs resistant to the development of allergic airway inflammation. In this study, we show that PS50G modulate the frequency and phenotype of regulatory T cells (Treg) in the lung, specifically increasing the proportion of tumor necrosis factor 2 (TNFR2) expressing Treg. Mice pre-exposed to PS50G, which were sensitized and then challenged with an allergen a month later, preferentially expanded TNFR2+Foxp3+ Treg, which further expressed enhanced levels of latency associated peptide and cytotoxic T-lymphocyte associated molecule-4. Moreover, PS50G-induced CD103+ dendritic cell activation in the lung was associated with the proliferative expansion of TNFR2+Foxp3+ Treg. These findings provide the first evidence that engineered NP can promote the selective expansion of maximally suppressing TNFR2+Foxp3+ Treg and further suggest a novel mechanism by which NP may promote healthy lung homeostasis.
Collapse
Affiliation(s)
- Rohimah Mohamud
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia.,CRC for Asthma and Airways, Sydney, NSW, Australia.,Department of Immunology, School of Medical Sciences, Universiti Sains Malaysia, Kelantan, Malaysia
| | - Jeanne S LeMasurier
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia.,CRC for Asthma and Airways, Sydney, NSW, Australia
| | - Jennifer C Boer
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia
| | - Je Lin Sieow
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia
| | - Jennifer M Rolland
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia.,CRC for Asthma and Airways, Sydney, NSW, Australia.,Department of Allergy, Immunology and Respiratory Medicine, Monash University and The Alfred Hospital, Melbourne, VIC, Australia
| | - Robyn E O'Hehir
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia.,CRC for Asthma and Airways, Sydney, NSW, Australia.,Department of Allergy, Immunology and Respiratory Medicine, Monash University and The Alfred Hospital, Melbourne, VIC, Australia
| | - Charles L Hardy
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia.,CRC for Asthma and Airways, Sydney, NSW, Australia.,Department of Allergy, Immunology and Respiratory Medicine, Monash University and The Alfred Hospital, Melbourne, VIC, Australia
| | - Magdalena Plebanski
- Department of Immunology and Pathology, Monash University, Melbourne, VIC, Australia.,School of Health and Biomedical Sciences, RMIT, Melbourne, VIC, Australia
| |
Collapse
|
2
|
Hardy CL, LeMasurier JS, Mohamud R, Yao J, Xiang SD, Rolland JM, O’Hehir RE, Plebanski M. Differential Uptake of Nanoparticles and Microparticles by Pulmonary APC Subsets Induces Discrete Immunological Imprints. J I 2013; 191:5278-90. [DOI: 10.4049/jimmunol.1203131] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
3
|
Hardy CL, LeMasurier JS, Belz GT, Scalzo-Inguanti K, Yao J, Xiang SD, Kanellakis P, Bobik A, Strickland DH, Rolland JM, O'Hehir RE, Plebanski M. Inert 50-nm polystyrene nanoparticles that modify pulmonary dendritic cell function and inhibit allergic airway inflammation. J Immunol 2011; 188:1431-41. [PMID: 22190179 DOI: 10.4049/jimmunol.1100156] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Nanoparticles are being developed for diverse biomedical applications, but there is concern about their potential to promote inflammation, particularly in the lung. Although a variety of ambient, anthropogenic and man-made nanoparticles can promote lung inflammation, little is known about the long-term immunomodulatory effects of inert noninflammatory nanoparticles. We previously showed polystyrene 50-nm nanoparticles coated with the neutral amino acid glycine (PS50G nanoparticles) are not inflammatory and are taken up preferentially by dendritic cells (DCs) in the periphery. We tested the effects of such nanoparticles on pulmonary DC function and the development of acute allergic airway inflammation. Surprisingly, exposure to PS50G nanoparticles did not exacerbate but instead inhibited key features of allergic airway inflammation including lung airway and parenchymal inflammation, airway epithelial mucus production, and serum allergen-specific IgE and allergen-specific Th2 cytokines in the lung-draining lymph node (LN) after allergen challenge 1 mo later. PS50G nanoparticles themselves did not induce lung oxidative stress or cardiac or lung inflammation. Mechanistically, PS50G nanoparticles did not impair peripheral allergen sensitization but exerted their effect at the lung allergen challenge phase by inhibiting expansion of CD11c(+)MHCII(hi) DCs in the lung and draining LN and allergen-laden CD11b(hi)MHCII(hi) DCs in the lung after allergen challenge. PS50G nanoparticles further suppressed the ability of CD11b(hi) DCs in the draining LN of allergen-challenged mice to induce proliferation of OVA-specific CD4(+) T cells. The discovery that a defined type of nanoparticle can inhibit, rather than promote, lung inflammation via modulation of DC function opens the door to the discovery of other nanoparticle types with exciting beneficial properties.
Collapse
Affiliation(s)
- Charles L Hardy
- Department of Immunology, Monash University, Melbourne, Victoria 3004, Australia
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|