Project description:Single cell RNA-seq was performed on healthy mouse skin fibroblasts. This data along with single cell transcriptomics datasets of fibroblasts from other healthy tissues was used to construct a steady state mouse fibroblast atlas.
Project description:Dermal fibroblasts were isolated from healthy human skin or chronic psoriatic plaques for cultivation, which were subsequently subjected to RNA-Seq.
Project description:We used single-cell RNA sequencing (scRNA-seq) to analyze the heterogeneity of dermal fibroblasts in homeostasis and skin inflammation.
Project description:In the project “A Dual-Acting Nitric Oxide Donor and Phosphodiesterase 5 Inhibitor Activates Autophagy in Primary Skin Fibroblasts» by Esther Martínez-Martínez and Joern Dengjel, we performed expression proteomics analyzing the response of normal human fibroblasts (NHF) isolated from healthy skin to the drug TOP-N53.
Project description:Bulk ATAC-seq was performed on fibroblasts from 8 different healthy mouse tissues such as bone, epididymal and inguinal fat pads, omentum, liver, lung and lymph node. This data was used to examine tissue specific chromatin landscapes in fibroblasts.
Project description:The changes in the proteome of different human tissues with advancing age are poorly characterized. Here, we studied the proteins present in skin fibroblasts collected from 82 healthy individuals across a wide age spectrum (22 to 89 years old) who participated in the GESTALT (Genetic and Epigenetic Signatures of Translational Aging Laboratory Testing) study of the National Institute on Aging, NIH. Proteins were extracted from lysed fibroblasts and subjected to liquid chromatography-mass spectrometry analysis, and the expression levels of 9341 proteins were analyzed by linear regression models. Several differentially expressed proteins were implicated in processes that change with age, including autophagy, scavenging of reactive oxygen species (ROS), ribosome biogenesis, DNA replication, and DNA repair. Changes on these prominent pathways were further assessed using molecular and cell-culture approaches. Our study establishes a framework of the global proteome governing the homeostasis of the aged skin.
Project description:Our understanding of how human skin cells differ according to anatomical site and tumour formation is limited. To address this we have created a multi-scale spatial atlas of healthy skin and basal cell carcinoma (BCC), incorporating in vivo optical coherence tomography, single cell RNA sequencing, spatial global transcriptional profiling and in situ sequencing. Computational spatial deconvolution and projection revealed the localisation of distinct cell populations to specific tissue contexts. Although cell populations were conserved between healthy anatomical sites and in BCC, mesenchymal cell populations including fibroblasts and pericytes retained signatures of developmental origin. Spatial profiling and in silico lineage tracing support a hair follicle origin for BCC and demonstrate that cancer-associated fibroblasts are an expansion of a POSTN+ subpopulation associated with hair follicles in healthy skin. RGS5+ pericytes are also expanded in BCC suggesting a role in vascular remodelling. We propose that the identity of mesenchymal cell populations is regulated by signals emanating from adjacent structures and that these signals are repurposed to promote the expansion of skin cancer stroma. The resource we have created is publicly available in an interactive format for the research community.