Abstract:
:Endothelial dysfunction is critically involved in the pathogenesis of pulmonary arterial hypertension (PAH) and that exogenously administered microRNA may be of therapeutic benefit. Lower levels of miR-483 were found in serum from patients with idiopathic pulmonary arterial hypertension (IPAH), particularly those with more severe disease. RNA-seq and bioinformatics analyses showed that miR-483 targets several PAH-related genes, including transforming growth factor-β (TGF-β), TGF-β receptor 2 (TGFBR2), β-catenin, connective tissue growth factor (CTGF), interleukin-1β (IL-1β), and endothelin-1 (ET-1). Overexpression of miR-483 in ECs inhibited inflammatory and fibrogenic responses, revealed by the decreased expression of TGF-β, TGFBR2, β-catenin, CTGF, IL-1β, and ET-1. In contrast, inhibition of miR-483 increased these genes in ECs. Rats with EC-specific miR-483 overexpression exhibited ameliorated pulmonary hypertension (PH) and reduced right ventricular hypertrophy on challenge with monocrotaline (MCT) or Sugen + hypoxia. A reversal effect was observed in rats that received MCT with inhaled lentivirus overexpressing miR-483. These results indicate that PAH is associated with a reduced level of miR-483 and that miR-483 might reduce experimental PH by inhibition of multiple adverse responses.
journal_name
EMBO Mol Medjournal_title
EMBO molecular medicineauthors
Zhang J,He Y,Yan X,Chen S,He M,Lei Y,Zhang J,Gongol B,Gu M,Miao Y,Bai L,Cui X,Wang X,Zhang Y,Fan F,Li Z,Shen Y,Chou CH,Huang HD,Malhotra A,Rabinovitch M,Jing ZC,Shyy JYdoi
10.15252/emmm.201911303subject
Has Abstractpub_date
2020-05-08 00:00:00pages
e11303issue
5eissn
1757-4676issn
1757-4684journal_volume
12pub_type
杂志文章abstract::Human memory B cells and plasma cells represent a rich source of antibodies that have been selected in response to human pathogens. In the last decade, different methods have been developed to interrogate the human memory repertoire and isolate monoclonal antibodies. I will discuss how a target-agnostic approach based...
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