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Origins of pathological myofibroblasts in lung fibrosis: insights from lineage tracing mouse models in the single-cell RNA sequencing era

Origins of pathological myofibroblasts in lung fibrosis: insights from lineage tracing mouse... Idiopathic pulmonary fibrosis (IPF) is a rare interstitial lung disease with a poor prognosis. Chronic micro-injuries, mainly caused by environmental factors to an aging alveolar epithelium, would lead to the aberrant differentiation and accumulation of aberrant mesenchymal cells with a contractile phenotype, known as fibrosis-associated myofibroblasts, which trigger abnormal extracellular matrix accumulation and fibrosis. The origin of those pathological myofibroblasts in pulmonary fibrosis is not fully understood to date. Lineage tracing methods using mouse models have opened new avenues for studying cell fate in a pathological context. This review aims to present a non-exhaustive list of different potential sources of those harmful myofibroblasts during lung fibrosis, based on these in vivo approaches, and considering the normal and fibrotic lung cellular atlas recently established by single-cell RNA sequencing. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png AJP Lung Cellular and Molecular Physiology The American Physiological Society

Origins of pathological myofibroblasts in lung fibrosis: insights from lineage tracing mouse models in the single-cell RNA sequencing era

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ISSN
1040-0605
eISSN
1522-1504
DOI
10.1152/ajplung.00229.2022
Publisher site
See Article on Publisher Site

Abstract

Idiopathic pulmonary fibrosis (IPF) is a rare interstitial lung disease with a poor prognosis. Chronic micro-injuries, mainly caused by environmental factors to an aging alveolar epithelium, would lead to the aberrant differentiation and accumulation of aberrant mesenchymal cells with a contractile phenotype, known as fibrosis-associated myofibroblasts, which trigger abnormal extracellular matrix accumulation and fibrosis. The origin of those pathological myofibroblasts in pulmonary fibrosis is not fully understood to date. Lineage tracing methods using mouse models have opened new avenues for studying cell fate in a pathological context. This review aims to present a non-exhaustive list of different potential sources of those harmful myofibroblasts during lung fibrosis, based on these in vivo approaches, and considering the normal and fibrotic lung cellular atlas recently established by single-cell RNA sequencing.

Journal

AJP Lung Cellular and Molecular PhysiologyThe American Physiological Society

Published: Jun 1, 2023

References