The Spectrum of Fibroblast Immune Biology

Area of Science:

• Immunology
• Cell Biology
• Pathology

Background:

• Single-cell omics and lineage tracing reveal microenvironmental influences on immune activity.
• Fibroblasts exhibit greater plasticity and heterogeneity than previously understood.
• Unique connections between fibroblasts and immune system functions are increasingly recognized.

Purpose of the Study:

• To review the current understanding of inflammatory fibroblast biology.
• To emphasize their regulatory roles and interactions with innate and adaptive immune cells in chronic nonmalignant diseases.
• To explore their ontogeny, distribution, and characteristics in various inflammatory conditions.

Main Methods:

• Review of recent advancements in single-cell omic technologies.
• Analysis of lineage-tracing approaches.
• Synthesis of current literature on fibroblast biology and immunology.

Main Results:

• Fibroblasts are key regulators of immune responses within specific microenvironments.
• Inflammatory fibroblasts exhibit unique transcriptional, biochemical, and immunological profiles.
• These cells are intricately involved in both tissue homeostasis and pathological conditions.

Conclusions:

• Inflammatory fibroblasts are critical players in chronic inflammatory diseases.
• Their interactions with immune cells are bidirectional and context-dependent.
• Further research into fibroblast heterogeneity is essential for understanding and treating inflammatory conditions.