Tissue Regulatory T Cells

Area of Science:

• Immunology
• Cell Biology
• Tissue Homeostasis

Background:

• FOXP3+ regulatory T cells (Tregs) are known for controlling systemic immune responses.
• A subset of Tregs resides in non-lymphoid tissues, exhibiting distinct functions beyond immune suppression.
• These tissue-resident Tregs play crucial roles in maintaining tissue physiology, including homeostasis, repair, and regeneration.

Purpose of the Study:

• To survey the current knowledge on the form and function of tissue-resident Tregs across multiple organs.
• To synthesize molecular features and cellular kinetics to identify a shared program of tissue residency.
• To review the clinical translation potential and identify knowledge gaps for therapeutic applications.

Main Methods:

• Literature review and synthesis of existing research on tissue-resident Tregs.
• Analysis of molecular features and cellular kinetics across different tissues.
• Examination of Treg behavior during homeostasis and disease states.

Main Results:

• Tissue-resident Tregs exhibit diverse beneficial roles in organs like fat, muscle, heart, brain, skin, lung, and gut.
• A conserved molecular program drives Treg tissue residency across various tissues and species.
• Dynamic cellular flux of tissue-resident Tregs is observed during both homeostasis and disease.

Conclusions:

• Tissue-resident Tregs represent a distinct functional subset with significant roles in organ physiology.
• A core residency module governs Treg adaptation to specific tissue microenvironments.
• Further research into this population holds promise for developing novel therapeutic strategies.