Immune system cell in the skin

"Immune system cells in the skin" refers collectively to the diverse population of **immune cells residing within or recruited to cutaneous tissues**. These include both innate and adaptive immune components such as **Langerhans cells** and other dendritic cells in the epidermis and dermis, **macrophages**, various subsets of **T lymphocytes** (including resident memory T cells), **B lymphocytes**, mast cells, neutrophils, and natural killer (NK) cells.\n\nThese populations play critical roles in defending against pathogens through recognition via pattern-recognition receptors like Toll-like receptors on keratinocytes, orchestrating inflammatory responses, presenting antigens to T lymphocytes for adaptive immunity activation, producing antibodies via B/plasma cells, regulating inflammation through cytokine secretion or regulatory T-cell activity, and maintaining tolerance/homeostasis within the skin environment.\n\nThe composition and function of these cutaneous immune populations are central to many dermatologic diseases including chronic inflammatory conditions such as atopic dermatitis and psoriasis. However—crucially—“immune system cell in the skin” is not itself a canonical therapeutic target but rather an umbrella term encompassing multiple distinct cellular targets with unique markers and functions. For structured data purposes it should be replaced with more precise entities such as “Langerhans cell,” “cutaneous dendritic cell,” “skin-resident memory T lymphocyte,” etc.

Other names

Skin immune cellCutaneous immune cellResident skin immune cell