Article ; Online: T-cell receptor sequencing specifies psoriasis as a systemic and atopic dermatitis as a skin-focused, allergen-driven disease.
2022 Volume 77, Issue 9, Page(s) 2737–2747
Abstract: ... skin diseases in developed countries. A hallmark of both diseases is T-cell infiltration into the skin ... However, it is still not clarified to what extent these infiltrating T cells are antigen-specific skin-homing ... T cells or unspecific heterogeneous bystander cells.: Methods: To elucidate this, T cells from lesional ...
Abstract | Background: Atopic dermatitis (AD) and psoriasis represent two of the most common inflammatory skin diseases in developed countries. A hallmark of both diseases is T-cell infiltration into the skin. However, it is still not clarified to what extent these infiltrating T cells are antigen-specific skin-homing T cells or unspecific heterogeneous bystander cells. Methods: To elucidate this, T cells from lesional skin and from blood of 9 AD and 10 psoriasis patients were compared by receptor (TCR) sequencing. Therefore, peripheral blood mononuclear cells (PBMC) were cell-sorted according to expression of the cutaneous leukocyte antigen (CLA) into skin-homing (CLA Results: Intra-individual comparison of TCRB CDR3 regions revealed that clonally expanded T cells in skin lesions of both AD and psoriasis patients corresponded to skin-homing circulating T cells. However, in psoriasis patients, these T-cell clones were also detectable to a larger extent among CLA Conclusions: Our data show that in line with the systemic nature of psoriasis, T-cell clones that infiltrate psoriatic skin lesions do not exclusively possess skin-homing ability and are therefore most probably specific to antigens that are not exclusively expressed or located in the skin. T cells driving AD skin inflammation appear to home nearly exclusively to the skin and are, to a certain extent, specific to aeroallergens. |
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MeSH term(s) | Allergens ; Antigens, Differentiation, T-Lymphocyte ; Antigens, Neoplasm ; Dermatitis, Atopic ; Humans ; Leukocytes, Mononuclear/metabolism ; Membrane Glycoproteins ; Psoriasis ; Receptors, Antigen, T-Cell/genetics ; Receptors, Lymphocyte Homing |
Chemical Substances | Allergens ; Antigens, Differentiation, T-Lymphocyte ; Antigens, Neoplasm ; Membrane Glycoproteins ; Receptors, Antigen, T-Cell ; Receptors, Lymphocyte Homing |
Language | English |
Publishing date | 2022-03-14 |
Publishing country | Denmark |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 391933-x |
ISSN | 1398-9995 ; 0105-4538 |
ISSN (online) | 1398-9995 |
ISSN | 0105-4538 |
DOI | 10.1111/all.15272 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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