Journal article
L-PhGPx expression can be suppressed by antisense oligodeoxynucleotides
Archives of biochemistry and biophysics, Vol.417(2), pp.212-218
2003
DOI: 10.1016/S0003-9861(03)00342-4
PMID: 12941303
Abstract
Phospholipid hydroperoxide glutathione peroxidase (PhGPx) directly reduces hydroperoxides of phospholipid and cholesterol to their corresponding alcohols. There are two forms of PhGPx: L-PhGPx localizes in mitochondria and S-PhGPx in cytosol. Antisense oligodeoxynucleotides can inhibit specific protein expression. We tested the hypothesis that antisense oligodeoxynucleotides could be designed to inhibit PhGPx expression and thereby sensitize cells to lipid peroxidation induced by singlet oxygen. We chose P4 cells, a cell line established from L-PhGPx cDNA transfected MCF-7 cells, as our cell model. Lipid peroxidation was induced by singlet oxygen generated by Photofrin and visible light. We found that the antisense oligodeoxynucleotide (5
′ GCCGAGGCT
CAT
CGCGGCGG 3
′) was effective in suppressing L-PhGPx mRNA, PhGPx protein, and activity. This antisense oligodeoxynucleotide did not interfere with S-PhGPx. When cells were exposed to singlet oxygen, lipid hydroperoxides were produced in the cells. L-PhGPx was able to remove these hydroperoxides; this removal was inhibited by antisense treatment. The inhibition of L-PhGPx by the antisense oligodeoxynucleotides also resulted in increased membrane damage as measured by trypan blue dye exclusion. These data demonstrate that PhGPx expression can be manipulated by antisense techniques.
Details
- Title: Subtitle
- L-PhGPx expression can be suppressed by antisense oligodeoxynucleotides
- Creators
- Lingjie ZhaoHong P WangHannah J ZhangChristine J WeydertFrederick E DomannLarry W OberleyGarry R Buettner
- Resource Type
- Journal article
- Publication Details
- Archives of biochemistry and biophysics, Vol.417(2), pp.212-218
- Publisher
- Elsevier Inc
- DOI
- 10.1016/S0003-9861(03)00342-4
- PMID
- 12941303
- ISSN
- 0003-9861
- eISSN
- 1096-0384
- Language
- English
- Date published
- 2003
- Academic Unit
- Pathology; Surgery; Radiation Oncology; Internal Medicine
- Record Identifier
- 9984047617102771
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