scholarly journals Epidermal Growth Factor-like Repeats of Thrombospondins Activate Phospholipase Cγ and Increase Epithelial Cell Migration through Indirect Epidermal Growth Factor Receptor Activation

2009 ◽  
Vol 284 (10) ◽  
pp. 6389-6402 ◽  
Author(s):  
Anguo Liu ◽  
Pallavi Garg ◽  
Shiqi Yang ◽  
Ping Gong ◽  
Manuel A. Pallero ◽  
...  
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Cell Migration ◽  
Growth Factor ◽  
Epithelial Cell ◽  
Epidermal Growth Factor ◽  
Growth Factor Receptor ◽  
Receptor Activation ◽  
Epithelial Cell Migration ◽  
Epidermal Growth

scholarly journals Photonic modulation of epidermal growth factor receptor halts receptor activation and cancer cell migration

2018 ◽  
Vol 11 (9) ◽  
pp. e201700323
Author(s):  
Cláudia M. Botelho ◽  
Odete Gonçalves ◽  
Rogério Marques ◽  
Viruthachalam Thiagarajan ◽  
Henrik Vorum ◽  
...  
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Cell Migration ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Cancer Cell ◽  
Growth Factor Receptor ◽  
Receptor Activation ◽  
Cancer Cell Migration ◽  
Epidermal Growth

Neutrophil elastase induces mucin production by ligand-dependent epidermal growth factor receptor activation

2002 ◽  
Vol 283 (3) ◽  
pp. L531-L540 ◽  
Author(s):  
Kazuhiro Kohri ◽  
Iris F. Ueki ◽  
Jay A. Nadel
Keyword(s):  
Epidermal Growth Factor Receptor ◽  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Neutrophil Elastase ◽  
Growth Factor Receptor ◽  
Receptor Activation ◽  
Cell Culture Supernatant ◽  
Mucin Production ◽  
Egfr Activation ◽  
Epidermal Growth

Neutrophil products are implicated in hypersecretory airway diseases. To determine the mechanisms linking a proteolytic effect of human neutrophil elastase (HNE) and mucin overproduction, we examined the effects of HNE on MUC5AC mucin production in human airway epithelial (NCI-H292) cells. Stimulation with HNE for 5–30 min induced MUC5AC production 24 h later, which was prevented by HNE serine active site inhibitors, implicating a proteolytic effect of HNE. MUC5AC induction was preceded by epidermal growth factor receptor (EGFR) tyrosine phosphorylation and was prevented by selective EGFR tyrosine kinase inhibitors, implicating EGFR activation. HNE-induced MUC5AC production was inhibited by a neutralizing transforming growth factor-α (TGF-α, an EGFR ligand) antibody and by a neutralizing EGFR antibody but not by oxygen free radical scavengers, further implicating TGF-α and ligand-dependent EGFR activation in the response. HNE decreased pro-TGF-α in NCI-H292 cells and increased TGF-α in cell culture supernatant. From these results, we conclude that HNE-induced MUC5AC mucin production occurs via its proteolytic activation of an EGFR signaling cascade involving TGF-α.

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