Drug Delivery Characteristics of the Progenitor Bronchial Epithelial Cell Line VA10

2012 ◽  
Vol 30 (3) ◽  
pp. 781-791 ◽  
Author(s):  
Berglind Eva Benediktsdóttir ◽  
Ari Jón Arason ◽  
Skarphédinn Halldórsson ◽  
Thórarinn Gudjónsson ◽  
Már Másson ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Epithelial Cell ◽  
Cell Line ◽  
Bronchial Epithelial Cell ◽  
Epithelial Cell Line ◽  
Bronchial Epithelial

Retinoic acid inhibits interleukin-4-induced eotaxin production in a human bronchial epithelial cell line

2004 ◽  
Vol 286 (4) ◽  
pp. L777-L785 ◽  
Author(s):  
Kei Takamura ◽  
Yasuyuki Nasuhara ◽  
Motoko Kobayashi ◽  
Tomoko Betsuyaku ◽  
Yoko Tanino ◽  
...  
Keyword(s):  
Retinoic Acid ◽  
Epithelial Cell ◽  
Cell Line ◽  
Nuclear Translocation ◽  
Bronchial Epithelial Cell ◽  
Inhibitory Effect ◽  
Human Bronchial Epithelial Cell ◽  
Epithelial Cell Line ◽  
Transcriptional Level ◽  
Bronchial Epithelial

Retinoic acid (RA) is known to accelerate wound healing and induce cell differentiation. All- trans RA (ATRA) exerts its effect by binding retinoic acid receptors, which are members of the nuclear receptor family. We investigated whether RA can alter expression of eotaxin, a potent eosinophil chemoattractant that is regulated by the transcription factors signal transducer and activator of transcription 6 (STAT6) and NF-κB. We examined the effects of RA on eotaxin expression in a human bronchial epithelial cell line BEAS-2B. ATRA and its stereodimer 9- cis retinoic acid (9- cis RA) inhibited IL-4-induced release of eotaxin at 10-6M by 78.0 and 52.0%, respectively ( P < 0.05). ATRA and 9- cis RA also significantly inhibited IL-4-induced eotaxin mRNA expression at 10-6M by 52.3 and 53.5%, respectively ( P < 0.05). In contrast, neither ATRA nor 9- cis RA had any effects on TNF-α-induced eotaxin production. In transfection studies using eotaxin promoter luciferase plasmids, the inhibitory effect of ATRA on IL-4-induced eotaxin production was confirmed at the transcriptional level. Interestingly, ATRA had no effects on IL-4-induced tyrosine phosphorylation, nuclear translocation, or DNA binding activity of STAT6. Activating protein-1 was not involved in ATRA-mediated transrepression of eotaxin with IL-4 stimulation. The mechanism of the inhibitory effect of ATRA on IL-4-induced eotaxin production in human bronchial epithelial cells has not been elucidated but does not appear to be due to an effect on STAT6 activation. These findings raise the possibility that RA may reduce eosinophilic airway inflammation, one of the prominent pathological features of allergic diseases such as bronchial asthma.

Transport and local metabolism of budesonide and fluticasone propionate in a human bronchial epithelial cell line (Calu‐3)

2002 ◽  
Vol 91 (6) ◽  
pp. 1561-1567 ◽  
Author(s):  
Gerrit Borchard ◽  
María Luz Cassará ◽  
Peter E.H. Roemelé ◽  
Bogdan I. Florea ◽  
Hans E. Junginger
Keyword(s):  
Epithelial Cell ◽  
Fluticasone Propionate ◽  
Cell Line ◽  
Bronchial Epithelial Cell ◽  
Human Bronchial Epithelial Cell ◽  
Epithelial Cell Line ◽  
Bronchial Epithelial ◽  
Local Metabolism
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