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Tissue specific human fibroblast differential expression based on RNAsequencing analysis

ABSTRACT: Tissue specific human fibroblast differential expression based on RNAsequencing analysis

PROVIDER: PRJNA590132 | ENA |

REPOSITORIES: ENA

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Tissue specific human fibroblast differential expression based on RNAsequencing analysis

Project description:Background:Physical forces, such as mechanical stress, are essential for tissue homeostasis and influence geneexpression of cells. In particular, the fibroblast has demonstrated sensitivity to extracellular matrices with assumedadaptation upon various mechanical loads. The purpose of this study was to compare the vocal fold fibroblastgenotype, known for its unique mechanically stressful tissue environment, with cellular counterparts at various otheranatomic locales to identify differences in functional gene expression profiles. Results:By using RNA-seq technology, we identified differentially expressed gene programs (DEseq2) among sevennormal human fibroblast primary cell lines from healthy cadavers, which included: vocal fold, trachea, lung, abdomen,scalp, upper gingiva, and soft palate. Unsupervised gene expression analysis yielded 6216 genes differentially expressedacross all anatomic sites. Hierarchical cluster analysis revealed grouping based on anatomic site origin rather thandonor, suggesting global fibroblast phenotype heterogeneity. Sex and age-related effects were negligible. Functionalenrichment analyses based on separate post-hoc 2-group comparisons revealed several functional themes within thevocal fold fibroblast related to transcription factors for signaling pathways regulating pluripotency of stem cells andextracellular matrix components such as cell signaling, migration, proliferation, and differentiation potential. Conclusions:Human fibroblasts display a phenomenon of global topographic differentiation, which is maintained inisolation via in vitro assays. Epigenetic mechanical influences on vocal fold tissue may play a role in uniquely modellingand maintaining the local environmental cellular niche during homeostasis with vocal fold fibroblasts distinctlyspecialized related to their anatomic positional and developmental origins established during embryogenesis.

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