Development- and age-associated expression pattern of peroxiredoxin 6, and its regulation in murine ocular lens

Eri Kubo, Tomoe Miyazawa, Nigar Fatma, Yoshio Akagi, Dhirendra P. Singh

Research output: Contribution to journalArticle

38 Citations (Scopus)

Abstract

Peroxiredoxin (PRDX) 6 is a unique member of the PRDX family. Its antioxidant and signaling properties are related to its expression level in cells. We studied development- and age-associated changes in PRDX6 expression in the murine lens. We also investigated the effects of dexamethasone (Dex), transforming growth factor-beta1 (TGF-β1) and tumor necrosis factor-alfa (TNF-α) on PRDX6 expression. Expression levels of PRDX6 mRNA in whole lenses isolated from postnatal day (PD) 1- to 18-month-old mice, and the effects of Dex, TGF-β1 and TNF-α on the expression of PRDX6 in lens epithelial cells (LECs), were monitored using real-time reverse transcriptase-polymerase chain reaction (PCR) or Western blot. Localization of PRDX6 was studied using in situ hybridization and immunohistochemistry. PRDX6 expression gradually increased in the lenses of 4-week- to 6-month-old mice and declined thereafter. In situ hybridization and immunohistochemistry revealed that PRDX6 was localized in the cytoplasm of LECs and in lens fibers. Intense PRDX6 staining was present in the whole lens on gestational days 14 and 18. The lenses of PD1 mice showed diminished nuclear fiber staining, while those of 4-week-old mice revealed lack of nuclear fiber staining but intense staining of the germinative zone. LECs treated with TNF-α or Dex showed higher PRDX6 expression, while TGF-β1 downregulated expression. Thus, our results provide a topographic basis for understanding the role of PRDX6 in the lens.

Original languageEnglish (US)
Pages (from-to)249-256
Number of pages8
JournalMechanisms of Ageing and Development
Volume127
Issue number3
DOIs
StatePublished - Mar 1 2006

Fingerprint

Peroxiredoxin VI
Crystalline Lens
Lenses
Transforming Growth Factor beta1
Dexamethasone
Staining and Labeling
Tumor Necrosis Factor-alpha
Epithelial Cells
In Situ Hybridization
Fibers
Immunohistochemistry
Peroxiredoxins
Polymerase chain reaction
RNA-Directed DNA Polymerase
Reverse Transcriptase Polymerase Chain Reaction
Real-Time Polymerase Chain Reaction

Keywords

  • Antioxidant protein
  • Lens
  • Oxidative stress
  • PRDX6

ASJC Scopus subject areas

  • Aging
  • Developmental Biology

Cite this

Development- and age-associated expression pattern of peroxiredoxin 6, and its regulation in murine ocular lens. / Kubo, Eri; Miyazawa, Tomoe; Fatma, Nigar; Akagi, Yoshio; Singh, Dhirendra P.

In: Mechanisms of Ageing and Development, Vol. 127, No. 3, 01.03.2006, p. 249-256.

Research output: Contribution to journalArticle

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