Production of phytoene, a carotenoid, and induction of connexin 26 in transgenic mice carrying the phytoene synthase gene crtB

Biochemical and Biophysical Research Communications
Yoshiko SatomiH Nishino

Abstract

Carotenoids have been recognized as chemopreventive agents against human diseases, such as cancer and cardiovascular disease. Mammalians utilize carotenoids supplied from their food since they are unable to perform the de novo synthesis of carotenoids. We previously created mammalian cultured cells producing phytoene, a type of carotenoid, and showed that these cells acquired resistance against oxidative stress and oncogenic transformation. In the present study, we established a transgenic mouse line, carrying the crtB gene encoding phytoene synthase, which could produce phytoene endogenously. It was found that connexin 26 was induced in these phytoene-producing mice. Since it is known that carotenoids enhance gap junctional communication by inducing the expression of connexin genes, the present data suggest that the induction of connexin 26 in phytoene-producing mice may play a role in controlling cell-to-cell communication. Phytoene-producing mice provide a useful system in which to investigate the in vivo function of the carotenoid phytoene.

Citations

Oct 8, 2008·Antioxidants & Redox Signaling·Agustín D MartínezBruce Nicholson
Sep 1, 2012·Molecular Endocrinology·Gary L Firestone, Bhumika J Kapadia
Jan 3, 2012·Advances in Nutrition·Nancy J EngelmannJohn W Erdman
Dec 18, 2015·The Journal of Nutrition·Nancy E MoranSteven K Clinton

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