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Shi Y, Fu X, Cao Q, Mao Z, Chen Y, Sun Y, Liu Z, Zhang Q. Overexpression of miR-155-5p Inhibits the Proliferation and Migration of IL-13-Induced Human Bronchial Smooth Muscle Cells by Suppressing TGF-β-Activated Kinase 1/MAP3K7-Binding Protein 2. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2018; 10:260-267. [PMID: 29676073 PMCID: PMC5911445 DOI: 10.4168/aair.2018.10.3.260] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 04/16/2017] [Accepted: 12/13/2017] [Indexed: 12/25/2022]
Abstract
Purpose Molecular mechanisms leading to asthma is still ill-defined. Though the function of microRNAs (miRNAs) in asthma was previously reported, the involvement of miR-155 in important features of this disease remains unknown. The present study was designed to uncover the probable involvement of miR-155-5p in the proliferation and migration of IL-13-induced human bronchial smooth muscle cells (BSMCs) and the intrinsic regulatory mechanism. Methods The effects of different concentrations of IL-13 on the proliferation and migration of BSMCs as well as the expression of miR-155-5p and its predicted target transforming growth factor (TGF)-β-activated kinase 1/MAP3K7-binding protein 2 (TAB2) were investigated. The effects of miR-155-5p on the proliferation and migration of interleukin (IL)-13-induced BSMCs was determined in vitro using BSMCs transfected with miR-155 mimic/inhibitor and induced by a high concentration of IL-13. The quantitative real-time polymerase chain reaction (qRTPCR) was employed for determining the expression of miR-155-5p and TAB2. Western blotting was applied to analyze the expression of TAB2 at the protein level. Cell proliferation and migration were assessed using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and Transwell assays, respectively. Results The proliferation and migration of BSMCs were dose-dependently increased with IL-13 treatment. Contrariwise, IL-13 dose-dependently inhibited the expression of miR-155-5p in BSMCs. Mechanistic studies showed that inhibition of miR-155-5p further promoted the stimulatory effects of IL-13, whereas overexpression of miR-155 significantly inhibited these effects. In silico studies and luciferase reporter assays indicated that TAB2 was a negatively regulated miR-155-5p target. Conclusions These results suggested that miR-155-5p-inhibit the IL-13-induced proliferation and migration of BSMCs by targeting TAB2 and that the IL-13/miR-155/TAB2 pathway could serve as a therapeutic target for pulmonary diseases, especially asthma.
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Affiliation(s)
- Yujia Shi
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Xingli Fu
- Health Science Center, Jiangsu University, Zhenjiang, China
| | - Qi Cao
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Zhengdao Mao
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Yi Chen
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Yun Sun
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Zhiguang Liu
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China
| | - Qian Zhang
- Department of Respiratory Medicine, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, China.
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Araujo ES, de Jesus Pereira CA, de Moura Pereira AT, Moreira JMP, de Rezende MC, Rodrigues JL, Teixeira MM, Negrão-Corrêa D. The role of IL-33/ST2, IL-4, and eosinophils on the airway hyperresponsiveness induced by Strongyloides venezuelensis in BALB/c mice. Parasitol Res 2016; 115:3107-17. [PMID: 27102638 DOI: 10.1007/s00436-016-5066-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Accepted: 04/13/2016] [Indexed: 10/21/2022]
Abstract
Strongyloidiasis is a neglected chronic nematode infection, in which the control of autoinfection rate and severity of disease is dependent on type 2 immune responses. Strongyloides also causes Th2 responses in the lung of infected animals and changes in airway function, including airway hyperresponsiveness (AHR). Mechanisms of AHR during Strongyloides venezuelensis infection are not entirely known, and we investigate here the role of IL-4, eosinophils, and IL-33/ST2. AHR was evaluated in infected mice by determining changes in lung function after increasing doses of methacholine. Balb/C, but no C57Bl/6, mice developed AHR, tissue eosinophilia, and increased local IL-4 and IL-5 production. Functional changes peaked at day 4 and 7, after the larva had left the lungs. AHR was clearly dependent on IL-4 but not on eosinophils, as evaluated by experiments in IL-4 and Gata-1-deficient mice. Experiments in ST2-deficient mice showed that this pathway was not needed for induction of AHR but was necessary for the maintenance of AHR and for Th2 responses in the lung. These studies clearly show a crucial role for IL-4 in the induction of AHR following S. venezuelensis infection and for IL-33/ST2 in maintaining AHR and lung Th2 responses.
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Affiliation(s)
- Emilia Souza Araujo
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901
| | - Cintia Aparecida de Jesus Pereira
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901
| | - Ana Terezinha de Moura Pereira
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901
| | - João Marcelo Peixoto Moreira
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901
| | - Michelle Carvalho de Rezende
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901
| | - Jailza Lima Rodrigues
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901
| | | | - Deborah Negrão-Corrêa
- Departamento de Parasitologia Bloco Q3-sala 242, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Avenida Antonio Carlos 6627, Campus Pampulha, Belo Horizonte, MG, Brazil, 31270-901.
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Anjos-Ramos L, Gama LA, Mati VLT, Corá LA, Fujiwara RT, Americo MF. Evaluation of gastrointestinal transit after infection with different loads of Strongyloides venezuelensis in rats. Acta Trop 2016; 156:43-7. [PMID: 26739657 DOI: 10.1016/j.actatropica.2015.12.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Revised: 12/19/2015] [Accepted: 12/22/2015] [Indexed: 12/12/2022]
Abstract
The aim was to correlate the gastrointestinal transit profile in rats, evaluated by a biomagnetic technique, in response to infection with different loads of Strongyloides venezuelensis. Eggs per gram, intestinal number of worms and fecundity, and also gastric emptying time, cecum arrival time, small intestinal transit time and stool weight were determined. Assessments occurred at 0 (control), 3, 6, 9, 12, 15, 18 and 21 days post infection (dpi) with three infective loads (400, 2000, and 10,000 L). Gastric emptying was faster (p=0.0001) and the intestinal transit was significantly slower (p=0.001) during the infection time course. Also, linear mixed-effects models showed significantly changes in small intestinal transit after three parasite load over time. Cecum arrival was not influenced by infection time course or parasite load. As indirect effect, stool weight decreased accompanied a strong oviposition peak at 9 dpi in 400 L and 2000 L. In several motor function instances, neuromuscular dysfunction persists after mucosal inflammation has decreased. Our approach could be very helpful to evaluate gastrointestinal motor abnormalities in vivo after parasite infection. Despite parasitological data progressively decreased after 15 dpi, small intestinal transit worse over time and according to burden.
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Affiliation(s)
- L Anjos-Ramos
- Instituto de Ciências Biológicas e da Saúde, UFMT-Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - L A Gama
- Instituto de Ciências Biológicas e da Saúde, UFMT-Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil
| | - V L T Mati
- Instituto de Ciências Biológicas UFMG-Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - L A Corá
- Centro de Ciências Integradoras, UNCISAL-Universidade Estadual de Ciências da Saúde de Alagoas, Maceió, Alagoas, Brazil
| | - R T Fujiwara
- Instituto de Ciências Biológicas UFMG-Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - M F Americo
- Instituto de Ciências Biológicas e da Saúde, UFMT-Universidade Federal de Mato Grosso, Barra do Garças, Mato Grosso, Brazil.
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