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Introduction to Fibroblasts01:09

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Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
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Murine Dermal Fibroblast Isolation by FACS
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Dissecting Fibroblast Heterogeneity in Health and Fibrotic Disease.

Tanya J Shaw1, Emanuel Rognoni2

  • 1Centre for Inflammation Biology & Cancer Immunology, Department of Inflammation Biology, School of Immunology & Microbial Sciences, New Hunt's House, Guy's Campus, King's College London, London, SE1 1UL, UK.

Current Rheumatology Reports
|June 21, 2020
PubMed
Summary

Fibroblasts exhibit surprising diversity, with specialized roles in tissue health and fibrotic diseases. Understanding fibroblast heterogeneity is key for developing targeted therapies for conditions like fibrosis.

Keywords:
Cell heterogeneityFibroblastFibrosisMyofibroblastSingle-cell transcriptomicsTissue injury

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Area of Science:

  • Cell Biology
  • Tissue Engineering
  • Medical Research

Background:

  • Fibroblasts are crucial connective tissue cells responsible for extracellular matrix deposition and maintenance.
  • Recent discoveries highlight significant, previously unpredicted fibroblast heterogeneity across various organ systems.

Purpose of the Study:

  • To discuss the origins and implications of fibroblast heterogeneity.
  • To explore how this diversity impacts healthy tissue function and fibrotic diseases.

Main Methods:

  • Review of recent advances in lineage tracing and single-cell transcriptional profiling.
  • Analysis of fibroblast heterogeneity across different organ systems (skin, lung, kidney, heart).

Main Results:

  • Fibroblast diversity is evident across multiple organs, challenging previous assumptions.
  • Specific fibroblast subsets contribute uniquely to both healthy tissue homeostasis and fibrotic processes.
  • Four key variables (tissue status, regional features, microenvironment, cell state) underpin fibroblast phenotypic diversity.

Conclusions:

  • Understanding fibroblast heterogeneity is essential for developing targeted therapeutic strategies.
  • Manipulating specific fibroblast subsets holds potential for treating fibrotic diseases.
  • Further research into the mechanisms driving fibroblast diversity is warranted.