The present invention discloses the use of
decorin or its encoding
gene as a target in the preparation of a
psoriasis treatment
drug. Through a series of experiments, the present invention demonstrates that DCN can effectively protect against
imiquimod-induced psoriatic
skin inflammation in mice, improve
skin scaling,
erythema, thickening, and abnormal epidermal differentiation, enhance the
skin's
barrier function, reduce the infiltration of inflammatory cells, and exert a certain anti-inflammatory effect. The experimental studies of the present invention have confirmed that DCN has significant
efficacy in
psoriasis models, is safe, highly effective, and has no side effects, and has a simple production process, showing the potential for medical transformation. This will also help expand the potential application value of DCN in various other inflammatory skin diseases.