Submit Data |  Help |  Video Tutorials |  News |  Publications |  FTP Download |  REST API |  Citing RGD |  Contact   

Pin1 regulates TGF-beta1 production by activated human and murine eosinophils and contributes to allergic lung fibrosis.

Authors: Shen, ZJ  Esnault, S  Rosenthal, LA  Szakaly, RJ  Sorkness, RL  Westmark, PR  Sandor, M  Malter, JS 
Citation: Shen ZJ, etal., J Clin Invest. 2008 Feb;118(2):479-90. doi: 10.1172/JCI32789.
Pubmed: (View Article at PubMed) PMID:18188456
DOI: Full-text: DOI:10.1172/JCI32789

Eosinophilic inflammation is a cornerstone of chronic asthma that often culminates in subepithelial fibrosis with variable airway obstruction. Pulmonary eosinophils (Eos) are a predominant source of TGF-beta1, which drives fibroblast proliferation and extracellular matrix deposition. We investigated the regulation of TGF-beta1 and show here that the peptidyl-prolyl isomerase (PPIase) Pin1 promoted the stability of TGF-beta1 mRNA in human Eos. In addition, Pin1 regulated cytokine production by both in vitro and in vivo activated human Eos. We found that Pin1 interacted with both PKC-alpha and protein phosphatase 2A, which together control Pin1 isomerase activity. Pharmacologic blockade of Pin1 in a rat asthma model selectively reduced eosinophilic pulmonary inflammation, TGF-beta1 and collagen expression, and airway remodeling. Furthermore, chronically challenged Pin1(-/-) mice showed reduced peribronchiolar collagen deposition compared with wild-type controls. These data suggest that pharmacologic suppression of Pin1 may be a novel therapeutic option to prevent airway fibrosis in individuals with chronic asthma.


Disease Annotations
Objects Annotated

Additional Information

CRRD Object Information
CRRD ID: 8693422
Created: 2014-07-15
Species: All species
Last Modified: 2014-07-15
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.