2008年12月
Deficiency of the cystine-transporter gene, xCT, does not exacerbate the deleterious phenotypic consequences of SOD1 knockout in mice
MOLECULAR AND CELLULAR BIOCHEMISTRY
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- 巻
- 319
- 号
- 1-2
- 開始ページ
- 125
- 終了ページ
- 132
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1007/s11010-008-9885-3
- 出版者・発行元
- SPRINGER
Because glutathione scavenges reactive oxygen species (ROS) and also donates electrons to antioxidative systems, it may compensate for the oxidative stress caused by SOD1 deficiency. The cystine/glutamate transporter, which consists of two proteins, xCT and 4F2hc, has been designated system x(c)(-). This transporter system plays a role in the maintenance of glutathione levels in mammalian cells. In the present study, we created SOD1(-/-); xCT(-/-) double-knockout mice by intercrossing xCT-knockout and SOD1-knockout animals. We determined if the double-knockout mice express the phenotypic characteristics unique to SOD1(-/-) mice-increased oxidative stress and the production of autoantibodies against erythrocytes. We also compared the phenotype of the double-knockout mice with those of the single-knockout and wild-type mice. Although two major antioxidative systems were found to be defective in the SOD1-/-; xCT(-/-) mice, relative to the SOD1(-/-) mice, no functional deficits were observed. Based on these results, it appears that defects in system x(c)(-) do not exacerbate the phenotypic consequences of SOD1 deficiency in postnatal mice under ordinary breeding conditions.
- リンク情報
- ID情報
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- DOI : 10.1007/s11010-008-9885-3
- ISSN : 0300-8177
- eISSN : 1573-4919
- Web of Science ID : WOS:000260292800016