Abstract:
:We studied the effects of fibroblast growth factor (FGF-10) on alveolar epithelial cell (AEC) Na,K-ATPase regulation. Within 30 min FGF-10 increased Na,K-ATPase activity and alpha1 protein abundance by 2.5-fold at the AEC plasma membrane. Pretreatment of AEC with the mitogen-activated protein kinase (MAPK) inhibitor U0126, a Grb2-SOS inhibitor (SH3-b-p peptide), or a Ras inhibitor (farnesyl transferase inhibitor (FTI 277)), as well as N17-AEC that express a Ras dominant negative protein each prevented FGF-10-mediated Na,K-ATPase recruitment to the AEC plasma membrane. Accordingly, we provide first evidence that FGF-10 upregulates (short-term) the Na,K-ATPase activity in AEC via the Grb2-SOS/Ras/MAPK pathway.
journal_name
FEBS Lettjournal_title
FEBS lettersauthors
Upadhyay D,Lecuona E,Comellas A,Kamp DW,Sznajder JIdoi
10.1016/s0014-5793(03)00527-1keywords:
subject
Has Abstractpub_date
2003-06-19 00:00:00pages
173-6issue
2-3eissn
0014-5793issn
1873-3468pii
S0014579303005271journal_volume
545pub_type
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