Fibroblast Growth Factor 2 Augments Transforming Growth Factor Beta 1 Induced Epithelial-mesenchymal Transition in Lung Cell Culture Model.
Iran J Allergy Asthma Immunol
; 19(4): 348-361, 2020 Aug 25.
Article
em En
| MEDLINE
| ID: mdl-33463102
ABSTRACT
Impaired lung epithelial cell regeneration following injury may contribute to the development of pulmonary fibrosis. Epithelial-mesenchymal transition (EMT) is a critical event in embryonic development, wound healing following injury, and even cancer progression. Previous studies have shown that the combination of transforming growth factor beta-1 (TGFß1) and fibroblast growth factor 2 (FGF2) induces EMT during cancer metastasis. However, this synergy remains to be elucidated in inducing EMT associated with wound healing after injury. We set out this study to determine the effect of fibroblast growth factor 2 (FGF2) on TGFß1-induced EMT in the human lung epithelium. BEAS-2B and A549 cells were treated with TGFß1, FGF2, or both. EMT phenotype was investigated morphologically and by measuring mRNA expression levels; using quantitative real-time PCR. E-cadherin expression was assayed by western blot and immunofluorescence staining. Cell migration was confirmed using a wound-healing assay. TGFß1 induced a morphological change and a significant increase in cell migration of BEAS-2B cells. TGFß1 significantly reduced E-cadherin (CDH1) mRNA expression and markedly induced expression of N-cadherin (CDH2), tenascin C (TNC), fibronectin (FN), actin alpha 2 (ACTA2), and collagen I (COL1A1). While FGF2 alone did not significantly alter EMT gene expression, it enhanced TGFß1-induced suppression of CDH1 and upregulation of ACTA2, but not TNC, FN, and CDH2. FGF2 significantly inhibited TGFß1-induced COL1A1 expression. Furthermore, FGF2 maintained TGFß1-induced morphologic changes and increased the migration of TGFß1-treated cells. This study suggests a synergistic effect between TGFß1 and FGF2 in inducing EMT in lung epithelial cells, which may play an important role in wound healing and tissue repair after injury.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Fator 2 de Crescimento de Fibroblastos
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Células Epiteliais
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Fator de Crescimento Transformador beta1
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Transição Epitelial-Mesenquimal
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
En
Revista:
Iran J Allergy Asthma Immunol
Assunto da revista:
ALERGIA E IMUNOLOGIA
Ano de publicação:
2020
Tipo de documento:
Article
País de afiliação:
Egito