Archives of Dermatological Research

, Volume 296, Issue 12, pp 555–559 | Cite as

Peroxiredoxin I and II are up-regulated during differentiation of epidermal keratinocytes

  • Sook Jung Yun
  • Jae Jung Seo
  • Jee Young Chae
  • Seung-Chul Lee
Original Paper
First Online:
Received:
Revised:
Accepted:

Abstract

Peroxiredoxins (Prxs) are expressed in the epidermis, and the accentuated expression of the Prx I and Prx II isotypes (Prx I/II) in the suprabasal layers suggests the potential role of Prx I/II in epidermal differentiation. To evaluate the novel function of Prx I/II, we checked the modulation of Prx I/II in differentiating keratinocytes. To induce differentiation in vitro, normal human epidermal keratinocytes (NHEK) were cultured for up to 10 days after the confluent state (post-confluency). In Western blot analysis, the marked induction of Prx I was observed from the second day, but the marked induction of Prx II was observed later from the sixth day of post-confluency, when loricrin and transglutaminase 1 were induced (sixth day of post-confluency). When NHEK cells were treated with INF-γ and TGF-β1, Prx I/II were up-regulated by INF-γ, but Prx I/II were down-regulated by TGF-β1. In summary, Prx I and Prx II are induced at the early and late stage of differentiation of NHEK cells, respectively.

Keywords

Peroxiredoxin I Peroxiredoxin II Differentiation Keratinocytes 

Abbreviations

Prx

Peroxiredoxin

NHEK

Normal human epidermal keratinocytes

ROS

Reactive oxygen species

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Notes

Acknowledgements

The work was supported by Korea Research Foundation Grant (KRF-2002-015-EP0103).

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Copyright information

© Springer-Verlag 2005

Authors and Affiliations

  • Sook Jung Yun
    • 1
  • Jae Jung Seo
    • 1
  • Jee Young Chae
    • 1
  • Seung-Chul Lee
    • 1
  1. 1.Department of DermatologyChonnam National University Medical SchoolGwangjuKorea (South)

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