Activation of the OVOL1-OVOL2 axis in the hair bulb and in pilomatricoma

Takamichi Ito, Gaku Tsuji, Fumitaka Ohno, Hiroshi Uchi, Takeshi Nakahara, Akiko Hashimoto-Hachiya, Yuichi Yoshida, Osamu Yamamoto, Yoshinao Oda, Masutaka Furue

研究成果: Contribution to journalArticle査読

10 被引用数 (Scopus)

抄録

OVOL1 and OVOL2, ubiquitously conserved genes encoding C2H2 zinc finger transcription factors in mammals, control epithelial cell proliferation, and differentiation, including those in skin. OVOL1 and OVOL2 expression is coordinately mediated via the Wnt signaling pathway, and OVOL1 negatively regulates OVOL2 expression in a transcriptional manner. Our previous study of OVOL1 expression in human skin revealed that OVOL1 is preferentially expressed in the inner root sheath of the hair follicle. Therefore, we hypothesized that the OVOL1-OVOL2 axis is involved in normal and neoplastic follicular differentiation. Immunohistochemical analysis showed that OVOL1 and OVOL2 were strongly expressed in a mutually exclusive manner in the cytoplasm of inner root sheath cells and matrix cells, respectively, in normal follicles. OVOL2 was also expressed in pilomatricoma, with only partial expression of OVOL1. Cultured human keratinocytes expressed OVOL1 and OVOL2 on both the mRNA and protein levels. The expression of OVOL2 was higher in keratinocytes transfected with siRNA of OVOL1. Ketoconazole, a hair growth stimulant, up-regulated the expression of OVOL1 but did not affect OVOL2 expression. These results indicated that the OVOL1-OVOL2 axis may actively contribute to cell differentiation and proliferation in the hair bulb, suggesting that the OVOL1 and OVOL2 may be therapeutic targets of hair disorders, including alopecia, and play important roles in the tumorigenesis of pilomatricoma.

本文言語英語
ページ(範囲)1036-1043
ページ数8
ジャーナルAmerican Journal of Pathology
186
4
DOI
出版ステータス出版済み - 4 1 2016

All Science Journal Classification (ASJC) codes

  • 病理学および法医学

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