Narrowband Ultraviolet B Interferes with Gene Expression in the Peripheral Blood T Cells of Patients with Psoriasis.

Li J, Hou R, Yang Y, Liu R, Zhao X, Li X, Yin G, An P, Wang Y, Zhang K.

Dermatology. 2013 Apr 25. [Epub ahead of print]


Institute of Dermatology, Taiyuan City Center Hospital, Shanxi Medical University, Taiyuan,






Background: Psoriasis pathogenesis and development are closely related to abnormal T cell activity.


Narrowband ultraviolet B (NB-UVB) treatment markedly improves skin lesions in psoriasis.


Objectives: To investigate differential gene expression in psoriasis and to understand the possible mechanisms of NB-UVB therapy for psoriasis.


Methods: The mRNA expression profiles and differentially expressed genes from peripheral blood T cells of psoriatic patients before and after NB-UVB treatment were examined using RNA sequencing and validated by real-time reverse-transcription polymerase chain reaction.


Results: A total of 129 genes were differentially expressed in the peripheral blood T cells of psoriatic patients: 83 genes were downregulated and 46 were upregulated in psoriatic patients compared to those of healthy subjects.


These genes were enriched in intracellular membrane-bound organelles, membrane-bound organelles and the nucleus, and are involved in the cell cycle, apoptosis, inflammation and other processes.


These changes are reversed in psoriatic patients with good clinical outcomes following NB-UVB treatment.


Conclusion: NB-UVB treatment has beneficial effects on local psoriatic lesions, possibly due to its effect on peripheral blood T cell gene expression.


Copyright © 2013 S. Karger AG, Basel.






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