Spatially Resolved Gene Expression Profiles of Fibrosing Interstitial Lung Diseases

Overview

Journal Sci Rep

Specialty Science

Date 2024 Nov 3

PMID 39488596

Authors

Seung J Kim

Matthew J Cecchini

Elissa Woo

Nathashi Jayawardena

Daniel T Passos

Frederick A Dick

Marco Mura

Affiliations

Soon will be listed here.

Abstract

Fibrosing interstitial lung diseases (ILDs) encompass a diverse range of scarring disorders that lead to progressive lung failure. Previous gene expression profiling studies focused on idiopathic pulmonary fibrosis (IPF) and bulk tissue samples. We employed digital spatial profiling to gain new insights into the spatial resolution of gene expression across distinct lung microenvironments (LMEs) in IPF, chronic hypersensitivity pneumonitis (CHP) and non-specific interstitial pneumonia (NSIP). We identified differentially expressed genes between LMEs within each condition, and across histologically similar regions between conditions. Uninvolved regions in IPF and CHP were distinct from normal controls, and displayed potential therapeutic targets. Hallmark LMEs of each condition retained distinct gene signatures, but these could not be reproduced in matched lung tissue samples. Based on these profiles and unsupervised clustering, we grouped previously unclassified ILD cases into NSIP or CHP. Overall, our work uniquely dissects gene expression profiles between LMEs within and across different types of fibrosing ILDs.

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