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Peer-reviewed veterinary case report

Erg mediates downregulation of claudin-5 in the brain endothelium of a murine experimental model of cerebral malaria.

Journal:
FEBS letters
Year:
2019
Authors:
Liu, Fuhong et al.
Affiliation:
Shandong Provincial Qianfoshan Hospital · China
Species:
rodent

Abstract

Cerebral malaria (CM) is a severe complication with brain vascular hyperpermeability. Claudin-5 is the major component of tight junctions. To investigate the expression of claudin-5 in CM, we established a murine experimental cerebral malaria (ECM) model and an in vitro model by treating murine brain endothelial cells (bEnd3) with plasma from ECM mice. Expression of claudin-5 and the ETS transcription factor Erg was reduced in the brain endothelium of ECM mice. In bEnd3 cells exposed to ECM plasma, decreased expression of claudin-5 and Erg, and increased permeability were observed. Silencing of Erg significantly reduced Cldn5 expression. ChIP assays indicated that Erg binds to the -813 ETS motif of the murine Cldn5 gene promoter, and the binding is decreased by treatment with ECM plasma.

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Original publication: https://pubmed.ncbi.nlm.nih.gov/31271645/