Fibrostenotic eosinophilic esophagitis might reflect epithelial lysyl oxidase induction by fibroblast-derived TNF-α.

ABSTRACT:

Background

Fibrosis and stricture are major comorbidities in patients with eosinophilic esophagitis (EoE). Lysyl oxidase (LOX), a collagen cross-linking enzyme, has not been investigated in the context of EoE.

Objective

We investigated regulation of epithelial LOX expression as a novel biomarker and functional effector of fibrostenotic disease conditions associated with EoE.

Methods

LOX expression was analyzed by using RNA-sequencing, PCR assays, and immunostaining in patients with EoE; cytokine-stimulated esophageal 3-dimensional organoids; and fibroblast-epithelial cell coculture, the latter coupled with fluorescence-activated cell sorting.

Results

Gene ontology and pathway analyses linked TNF-α and LOX expression in patients with EoE, which was validated in

SUBMITTER: Kasagi Y 

PROVIDER: S-EPMC6586527 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature