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A 3D adipogenesis platform to study the fate of fibro/adipogenic progenitors in muscular dystrophies
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A 3D adipogenesis platform to study the fate of fibro/adipogenic progenitors in muscular dystrophies
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A 3D adipogenesis platform to study the fate of fibro/adipogenic progenitors in muscular dystrophies
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Journal Article
A 3D adipogenesis platform to study the fate of fibro/adipogenic progenitors in muscular dystrophies
2023
Overview
In human dystrophies, progressive muscle wasting is exacerbated by ectopic deposition of fat and fibrous tissue originating from fibro/adipogenic progenitors (FAPs). In degenerating muscles, the ability of these cells to promote successful healing is attenuated, and FAPs aberrantly expand and differentiate into adipocytes and fibroblasts. Thus, arresting the fibro/adipogenic fate of FAPs, without affecting their physiological role, represents a valuable therapeutic strategy for patients affected by muscle diseases. Here, using a panel of adipose progenitor cells, including human-derived FAPs, coupled with pharmacological perturbations and proteome profiling, we report that LY2090314 interferes with a genuine adipogenic program acting as WNT surrogate for the stabilization of a competent β-catenin transcriptional complex. To predict the beneficial impact of LY2090314 in limiting ectopic deposition of fat in human muscles, we combined a poly-ethylene-glycol-fibrinogen biomimetic matrix with these progenitor cells to create a miniaturized 3D model of adipogenesis. Using this scalable system, we demonstrated that a two-digit nanomolar dose of this compound effectively represses adipogenesis at higher 3D scale, thus indicating the potential for LY2090314 to limit FAP-derived fat infiltrates in dystrophic muscles.
Publisher
The Company of Biologists Ltd,Cambridge Company of Biologists,The Company of Biologists
Subject
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