Telocytes heterogeneity: From cellular morphology to functional evidence

Area of Science:

• Cell Biology
• Histology
• Regenerative Medicine

Background:

• Telocytes (TCs) are a recently identified, heterogeneous cell population found in vertebrate stromal spaces.
• Characterized by long cytoplasmic extensions called telopodes (Tps), TCs are challenging to visualize with conventional microscopy.
• Electron microscopy was instrumental in their initial identification and the understanding of their 3D network organization.

Purpose of the Study:

• To review the accumulating evidence on telocytes since their discovery.
• To highlight the complex interplay between telocytes and stem cells.
• To explore the potential significance of telocytes in tissue engineering and regenerative medicine.

Main Methods:

• Review of existing scientific literature and research on telocytes.
• Analysis of studies utilizing electron microscopy for telocyte identification.
• Examination of immunophenotypic characterization challenges and tissue-specific variations.

Main Results:

• Telocytes form a complex three-dimensional network, contributing to their diverse roles.
• Telocyte immunophenotype is variable and context-dependent, posing characterization difficulties.
• Evidence suggests a significant interaction between telocytes and stem cells.

Conclusions:

• Telocytes play complex roles in various tissues, influenced by their location and local needs.
• The interaction between telocytes and stem cells is a key area for future research.
• Telocytes hold considerable potential for applications in tissue engineering and regenerative medicine.