当前位置： SCI文献检索 > JOURNAL OF DERMATOLOGICAL SCIENCE期刊下所有文献 > Kojic acid-induced IL-6 production in human keratinocytes plays a role in its anti-melanogenic activity in skin.

Kojic acid-induced IL-6 production in human keratinocytes plays a role in its anti-melanogenic activity in skin.

Abstract：

BACKGROUND:Kojic acid is a fungal metabolite widely used in medicinal and cosmetic formulations as a skin-lightening agent based on its de-pigmenting activity. Although in human clinical studies kojic acid has been shown to be effective in the treatment of hyper-pigmentation disorders such as melasma, the reasons for its apparent lack of anti-melanogenic activity in cultured mammalian melanocytes are unclear. OBJECTIVES:This study was aimed to elucidate pharmacological mechanisms of the in vivo anti-melanogenic activity of kojic acid in human skin. METHODS:A primary human melanocyte and keratinocyte co-culture system was used to evaluate whether kojic-acid-induced changes in keratinocytes were associated with anti-melanogenic activities in melanocytes. The cytokine secretion profiles in response to kojic acid were analyzed. RESULTS:Kojic acid increased interleukin (IL)-6 and IL-8 production in melanocyte/keratinocyte co-cultures; however, IL-6 directly inhibited melanogenesis whereas IL-8 did not. In melanocyte monocultures, kojic acid did not increase IL-6 production whereas in keratinocyte monocultures it significantly up-regulated IL-6 gene and protein expression. Therefore, the up-regulation of IL-6 in melanocyte/keratinocyte co-cultures seems to be originated from kojic acid-induced changes in keratinocytes. Anti-IL-6 antibody treatment antagonized the anti-melanogenic effect of kojic acid on the co-cultures. CONCLUSIONS:The pharmacological mechanism of kojic acid to explain clinically effective anti-melanogenic activity on hyper-pigmented skin is associated with the kojic acid-induced IL-6 production in keratinocytes. The cross-talk between melanocytes and keratinocytes should be determined in future studies on the pharmacological mechanisms of clinically effective dermatological drugs acting on the epidermis.

journal_name

J Dermatol Sci

journal_title

Journal of dermatological science

authors

Choi H,Kim K,Han J,Choi H,Jin SH,Lee EK,Shin DW,Lee TR,Lee AY,Noh M

doi

10.1016/j.jdermsci.2012.03.002

subject

Has Abstract

pub_date

2012-06-01 00:00:00

pages

207-15

issue

3

eissn

0923-1811

issn

1873-569X

pii

S0923-1811(12)00099-0

journal_volume

66

pub_type

杂志文章

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