959 Identification of novel innate immune cells in human epidermis

نویسندگان

چکیده

We and others have recently identified resident memory T cells regulatory in the human epidermis. Meanwhile, it has been largely unknown whether innate immune such as natural killer (NK) lymphoid (ILCs) are present Hence, this study sought to identify them examine their function. Healthy, non-inflamed skin was incubated with dispase II separate epidermis from underlying dermis, followed by floating on medium obtain emigrants. Subsequently, these emigrants were analyzed using flow cytometry. three populations of cells: CD94+CD127− NK (NK cells), CD94+CD127+ cytotoxic ILCs (cytoILCs), CD94−CD127+ conventional (convILCs) epidermal CD45+CD3− lymphocytes. The number convILCs is significantly higher than that cytoILCs. Additionally, completely express Ki-67, suggesting active situ proliferation. Furthermore, clearly tissue retention markers CD69, CD103, CD49a, indicating firm retention. Three CD56, NKG2D, NKp46, CD161. Epidermal exhibit expression NKp80 CD16 cell signature) lower CD200R (ILC those two ILC populations. produce greater IFN-γ Lastly, killing activity examined K562 cells, leukaemic cells. CD107a against populations, a potent cytotoxicity Collectively, we novel functional epidermis, equipped not only acquired but like dermis. Further studies required elucidate involvements pathomechanism various diseases.

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ژورنال

عنوان ژورنال: Journal of Investigative Dermatology

سال: 2023

ISSN: ['1523-1747', '0022-202X']

DOI: https://doi.org/10.1016/j.jid.2023.03.970