Overexpression of Human Thioredoxin in Transgenic Mice Controls Oxidative Stress and Life Span

Akira Mitsui, Junji Hamuro, Hajime Nakamura, Norihiko Kondo, Yoko Hirabayashi, Sonoko Ishizaki-Koizumi, Tadashi Hírakawa, Tohru Inoue, Junji Yodoi

Antioxidants and Redox Signaling · 2002 · 292 citations · 16 references

Concepts

Abstract

Transgenic (Tg) mice overexpressing human thioredoxin (TRX), a small redox-active protein, were produced to investigate the role of the protein in a variety of stresses. Bone marrow cells from TRX-Tg mice were more resistant to ultraviolet C-induced cytocide compared with those from wild type (WT) C57BL/6 mice. TRX-Tg mice exhibited extended median and maximum life spans compared with WT mice. Telomerase activity in spleen tissues in TRX-Tg mice was higher than that in WT mice. These results suggest that overexpression of TRX results in resistance against oxidative stress and a possible extension of life span without apparent abnormality in mammals.

References

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