scholarly journals Effects of Intereukin-6/JAK-STAT Pathway Blockade on Fibroblast Activation: Potential Role in Idiopathic Pulmonary Fibrosis

Author(s):  
K.G. Dsouza ◽  
M. Rehan ◽  
D. Chanda ◽  
V.J. Thannickal
2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jing Zhou ◽  
Yang Lin ◽  
Xiuhua Kang ◽  
Zhicheng Liu ◽  
Wei Zhang ◽  
...  

Abstract Background Previous reports have identified that human bone marrow mesenchymal stem cell-derived extracellular vesicles (BMSC-EVs) with their cargo microRNAs (miRNAs) are a promising therapeutic approach for the treatment of idiopathic pulmonary fibrosis (IPF). Therefore, we explored whether delivery of microRNA-186 (miR-186), a downregulated miRNA in IPF, by BMSC EVs could interfere with the progression of IPF in a murine model. Methods In a co-culture system, we assessed whether BMSC-EVs modulated the activation of fibroblasts. We established a mouse model of PF to evaluate the in vivo therapeutic effects of BMSC-EVs and determined miR-186 expression in BMSC-EVs by polymerase chain reaction. Using a loss-of-function approach, we examined how miR-186 delivered by BMSC-EVs affected fibroblasts. The putative relationship between miR-186 and SRY-related HMG box transcription factor 4 (SOX4) was tested using luciferase assay. Next, we investigated whether EV-miR-186 affected fibroblast activation and PF by targeting SOX4 and its downstream gene, Dickkopf-1 (DKK1). Results BMSC-EVs suppressed lung fibroblast activation and delayed IPF progression in mice. miR-186 was downregulated in IPF but enriched in the BMSC-EVs. miR-186 delivered by BMSC-EVs could suppress fibroblast activation. Furthermore, miR-186 reduced the expression of SOX4, a target gene of miR-186, and hence suppressed the expression of DKK1. Finally, EV-delivered miR-186 impaired fibroblast activation and alleviated PF via downregulation of SOX4 and DKK1. Conclusion In conclusion, miR-186 delivered by BMSC-EVs suppressed SOX4 and DKK1 expression, thereby blocking fibroblast activation and ameliorating IPF, thus presenting a novel therapeutic target for IPF.


2021 ◽  
Author(s):  
Giovanna Elisiana Carpagnano ◽  
Piera Soccio ◽  
Giulia Scioscia ◽  
Grazia Pia Palladino ◽  
Maria Pia Foschino Barbaro ◽  
...  

Author(s):  
Luísa Coutinho Coelho ◽  
Karina Smidt Simon ◽  
Cesar Augusto Melo-Silva ◽  
Paulo Henrique De Holanda Veloso Junior ◽  
João Paulo Figueiró Longo ◽  
...  

2019 ◽  
Vol 20 (22) ◽  
pp. 5618 ◽  
Author(s):  
Paolo Spagnolo ◽  
Philip L. Molyneaux ◽  
Nicol Bernardinello ◽  
Elisabetta Cocconcelli ◽  
Davide Biondini ◽  
...  

Idiopathic pulmonary fibrosis (IPF) is a chronic, progressive, fibrosing interstitial lung disease that commonly affects older adults and is associated with the histopathological and/or radiological patterns of usual interstitial pneumonia (UIP). Despite significant advances in our understanding of disease pathobiology and natural history, what causes IPF remains unknown. A potential role for infection in the disease’s pathogenesis and progression or as a trigger of acute exacerbation has long been postulated, but initial studies based on traditional culture methods have yielded inconsistent results. The recent application to IPF of culture-independent techniques for microbiological analysis has revealed previously unappreciated alterations of the lung microbiome, as well as an increased bacterial burden in the bronchoalveolar lavage (BAL) of IPF patients, although correlation does not necessarily entail causation. In addition, the lung microbiome remains only partially characterized and further research should investigate organisms other than bacteria and viruses, including fungi. The clarification of the role of the microbiome in the pathogenesis and progression of IPF may potentially allow its manipulation, providing an opportunity for targeted therapeutic intervention.


2008 ◽  
Vol 177 (9) ◽  
pp. 1048-1048 ◽  
Author(s):  
Alfredo N. C. Santana ◽  
Ronaldo A. Kairalla ◽  
Carlos R. R. Carvalho

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