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Abstract Title:

Shikonin induces apoptosis and suppresses growth in keratinocytes via CEBP-δ upregulation.

Abstract Source:

Int Immunopharmacol. 2019 Jul ;72:511-521. Epub 2019 May 7. PMID: 31075711

Abstract Author(s):

Ya-Jie Yu, Yuan-Yuan Xu, Xiao-Ou Lan, Xiao-Ying Liu, Xiao-Lan Zhang, Xing-Hua Gao, Long Geng

Article Affiliation:

Ya-Jie Yu

Abstract:

Shikonin is an active compound of the oriental medicinal plant, Leptospermum erythrorhizon, which has been previously shown to inhibit psoriasis-like inflammation. However, the underlying mechanism is unclear. In the present study, the mechanisms of keratinocyte proliferation and apoptosis in psoriasis in response to shikonin were explored both in vitro and in vivo. Our results showed that shikonin significantly inhibits cell proliferation and induces apoptosis in both HaCaT and LV-STAT3 HaCaT cells by targeting CEBPD, while a decrease in cell survival, proliferation and viability were found through flow-cytometry and MTS assay. Furthermore, gavage with shikonin markedly alleviated psoriasis-like manifestations in IMQ-induced BALB/c mice clinically (PASI Score) and histopathologically. Immunohistochemistry revealed that shikonin potently suppresses the JAK/STAT3 signaling pathway in local skin lesions and increases CEBPD expression. These results imply that shikonin inhibits keratinocyte proliferation and induces apoptosis, which results in psoriasis treatment through the JAK/STAT3 dependent pathway. In addition, the activation of JAK/STAT3 downregulates CEBPD in HaCaT cells and IMQ-induced BALB/c mice. However, shikonin can reverse these effects, suggesting that CEBPD may be a potential therapeutic target for psoriasis.

Study Type : In Vitro Study
Additional Links
Pharmacological Actions : Apoptotic : CK(5217) : AC(3846)

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