The Translational Relevance of Human Circulating Memory Cutaneous Lymphocyte-Associated Antigen Positive T Cells in Inflammatory Skin Disorders
de Jesús-Gil, Carmen (Universitat de Barcelona. Departament de Biologia Cel·lular, Fisiologia i Immunologia)
Sans-de SanNicolàs, Lídia (Universitat de Barcelona. Departament de Biologia Cel·lular, Fisiologia i Immunologia)
García-Jiménez, Irene (Universitat de Barcelona. Departament de Biologia Cel·lular, Fisiologia i Immunologia)
Ferran, Marta (Institut Hospital del Mar d'Investigacions Mèdiques)
Celada, Antonio (Universitat de Barcelona. Departament de Biologia Cel·lular, Fisiologia i Immunologia)
Chiriac, Anca (Department of Dermatophysiology, Apollonia University)
Pujol Vallverdú, Ramón M. (Institut Hospital del Mar d'Investigacions Mèdiques)
Santamaria-Babí, Luis F. (Universitat de Barcelona. Departament de Biologia Cel·lular, Fisiologia i Immunologia)

Data:	2021
Resum:	Circulating memory T cells are heterogeneous in their tissue tropism. The skin-seeking T cell subset expresses the cutaneous lymphocyte-associated antigen (CLA) on their surface. CLA + memory T cells not only migrate from blood to skin but also recirculate between blood and skin. Studying CLA + memory T cells in cutaneous diseases has allowed a better understanding of immune-inflammatory mechanisms that take place. The analysis of the phenotypical features of these cells, their antigen specificity, cytokine production profile, and changes in relationship to clinical status and therapies among other characteristics have led to the concept that they constitute peripheral cellular biomarkers in T cell-mediated cutaneous conditions. CLA + memory T cells are of relevance in the pathogenesis of several cutaneous diseases, such as psoriasis (PSO), atopic dermatitis, vitiligo, and drug-induced allergic reactions, to name a few. The interaction of circulating CLA + T cells with skin-resident cells has been investigated in different ex vivo coculture models made out of clinical samples. Interestingly, microbes that are present in the skin or related with human skin diseases are preferentially recognized by CLA + T cells. Thus, the interaction of Streptococcus pyogenes with CLA + T cells in PSO is providing novel concepts that help to understand disease immunopathogenesis. The goal of this review is to present latest results in the field of CLA + T cells in T cell-mediated inflammatory skin diseases and their translational relevance for human immunodermatology.
Ajuts:	Instituto de Salud Carlos III PI09/2222 Ministerio de Economía y Competitividad PI13/01845 Ministerio de Economía y Competitividad PI13/01716 Ministerio de Economía y Competitividad PI16/01573 Instituto de Salud Carlos III PI016/00532 Ministerio de Educación, Cultura y Deporte FPU13/02308
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Skin-homing lymphocytes ; Cutaneous inflammation ; CLA + T cell ; Human ; Translational ; Immunodermatology
Publicat a:	Frontiers in immunology, Vol. 12 (march 2021) , ISSN 1664-3224

DOI: 10.3389/fimmu.2021.652613
PMID: 33833765

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