The Fasciacytes: A New Cell Devoted to Fascial Gliding Regulation (PMID: 29575206)
Research Question
Is there a specialized cell type within fascia responsible for producing hyaluronan, and how might this contribute to fascial sliding and movement?
This study investigated whether fascia contains previously unrecognized cells that regulate fascial gliding through hyaluronan production.
Methods
Researchers examined human fascial tissue using multiple laboratory techniques to identify and characterize cellular components involved in extracellular matrix production.
Methods included:
Alcian Blue staining (for hyaluronan-rich matrix)
Immunohistochemistry using:
Anti-HABP (hyaluronic acid binding protein)
Cellular marker profiling
Transmission electron microscopy (TEM)
Real-time RT-PCR to detect HAS2 (hyaluronan synthase 2) mRNA
Cells were analyzed for:
Morphology
Protein expression
Genetic markers
Functional role in extracellular matrix production
Key Findings
The study identified a previously unrecognized cell type in fascia, named fasciacytes.
Main findings included:
Fasciacytes are specialized cells that produce a hyaluronan-rich extracellular matrix.
They are located within fascial tissue where they support gliding between fascial layers and between fascia and muscle.
These cells express HAS2 mRNA, confirming their role in hyaluronan synthesis.
Immunohistochemical analysis showed:
Positive for vimentin (fibroblast-related marker)
Negative for CD68 (macrophage marker)
Expression of S-100A4, suggesting a unique phenotype distinct from typical fibroblasts
Morphologically, fasciacytes differ from classical fibroblasts despite some shared characteristics.
These findings indicate that fascia contains a dedicated cellular system for regulating tissue lubrication and sliding.
Why It Matters for Fascia
This discovery adds an important biological layer to fascia research by identifying a cell type specialized in maintaining fascial mobility.
Fasciacytes may play a key role in:
Reducing friction between fascial layers
Supporting smooth muscle–fascia interaction
Maintaining tissue glide and elasticity
Influencing movement efficiency and coordination
Contributing to myofascial pain when dysregulated
This supports the concept that fascia is not only structural but also actively regulated at the cellular level to maintain movement quality.
5 Takeaways
Fascia contains specialized cells called fasciacytes.
These cells produce hyaluronan-rich extracellular matrix.
Hyaluronan is essential for fascial gliding and tissue lubrication.
Fasciacytes differ from traditional fibroblasts in structure and markers.
Dysfunction in these cells may contribute to myofascial pain and stiffness.