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J Steroid Biochem Mol Biol. 2014 Oct;144 Pt B:268-79. doi: 10.1016/j.jsbmb.2014.07.010. Epub 2014 Jul 30.

Steroidogenic enzymes, their related transcription factors and nuclear receptors in human sebaceous glands under normal and pathological conditions.

Author information

1
Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan; Faculty of Medicine and Health Sciences, University Sultan Zainal Abidin, Kuala Terengganu, Terengganu, Malaysia.
2
Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan. Electronic address: yasu-naka@patholo2.med.tohoku.ac.jp.
3
Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan.
4
Department of Pathology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan; Division of Advanced Surgical Science and Technology, Tohoku University Graduate School of Medicine, Sendai, Japan.
5
Biological Science Laboratories, Kao Corporation, Haga, Tochigi, Japan.
6
Department of Systems Biology, School of Pharmaceutical Sciences, Kyoto University, Kyoto 606, Japan.
7
Departments of Dermatology, Venereology, Allergology and Immunology, Dessau Medical Center, Dessau, Germany.
8
Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan.

Abstract

The sebaceous gland is a major site of steroid synthesis in human skin, but details of the status of steroidogenic enzymes and their regulation in human sebaceous glands under normal and pathological conditions have rarely been reported. Therefore, in this study, we examined the status of steroidogenic enzymes, sex steroid receptors and transcription factors in human sebaceous glands under normal and pathological conditions to explore their possible roles in in situ steroid production in human skin. Immunohistochemical analysis was performed in a total of 59 human skin specimens, including 22 normal human sebaceous glands, 12 with sebaceous nevus, 12 with sebaceous gland hyperplasia, 3 with sebaceoma and 10 with sebaceous carcinoma. Immortalised human SZ95 sebocytes were treated with forskolin or vehicle for 3h, 6h, 12h or 24h, and the mRNA levels of steroidogenic enzymes were evaluated at each time point using quantitative RT-PCR (qPCR). The results of immunohistochemistry demonstrated the immunoreactivity of 3β-HSD1, CYP11A1, StAR, 17β-HSD5, CYP17A1, 5α-red1, PRB, AR and NGFI-B in normal human sebaceous gland, with lower levels of expression in pathological sebaceous glands. The results of the in vitro study also indicated that the expression levels of 3β-HSD1, CYP11A1, StAR, 5α-red1 and NGFI-B were elevated by forskolin. 3β-HSD1 and other steroidogenic enzymes were expressed in sebaceous glands resulting in in situ androgen and progesterone synthesis and their functions.

KEYWORDS:

Sebaceous gland; Steroidogenic enzymes; cAMP

PMID:
25090634
DOI:
10.1016/j.jsbmb.2014.07.010
[Indexed for MEDLINE]

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