Identification of the responsible proteins for increased selenium bioavailability in the brain of transgenic rats overexpressing selenoprotein M

  • Authors:
    • Yona Kim
    • Jun Seo Goo
    • Il Yong Kim
    • Ji Eun Kim
    • Moon Hwa Kwak
    • Jun Go
    • Sunbo Shim
    • Jin Tae Hong
    • Dae Youn Hwang
    • Je Kyung Seong
  • View Affiliations

  • Published online on: September 24, 2014     https://doi.org/10.3892/ijmm.2014.1945
  • Pages: 1688-1698
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Abstract

The present study was conducted to investigate whether the high antioxidant activity induced by selenium (Sel) treatment and selenoprotein M (SelM) overexpression affected the protein profile of the brain cortex. To accomplish this, the changes in global protein expression were measured in transgenic (Tg) rats expressing human SelM (CMV/hSelM) and non‑Tg rats using two‑dimensional electrophoresis (2‑DE). The results revealed that: ⅰ) CMV/hSelM Tg rats showed a high level of enzyme activity for antioxidant protein in the brain cortex compared to non‑Tg rats; ⅱ) the high activity of these enzymes induced a decrease in total antioxidant concentration and γ‑secretase activity in CMV/hSelM Tg rats; ⅲ) five proteins were upregulated and three were downregulated by SelM overexpression; ⅳ) among the five upregulated proteins, two associated with creatine kinase B‑type (B‑CK) and E3 ubiquitin‑protein ligase RING1 (RING finger protein 1) were further increased in the two groups following Sel treatment, whereas synaptotagmin-15 (SytXV), eukaryotic translation initiation factor 4H (eIF-4H) and lactate dehydrogenase B (LDH-B) were increased or decreased under the same conditions; ⅴ) the three downregulated proteins did not induce a significant change in expression following Sel treatment; and ⅵ) the protein expression level alterations of the two selected spots (B‑CK and SytXV) identified by 2‑DE were extremely similar to the results from western blot analysis. Overall, the results of the present study provide primary novel biological evidence that new functional protein groups and individual proteins in the brain cortex of CMV/hSelM Tg rats are associated with Sel biology, including the response to Sel treatment and SelM overexpression.
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December-2014
Volume 34 Issue 6

Print ISSN: 1107-3756
Online ISSN:1791-244X

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Spandidos Publications style
Kim Y, Goo JS, Kim IY, Kim JE, Kwak MH, Go J, Shim S, Hong JT, Hwang DY, Seong JK, Seong JK, et al: Identification of the responsible proteins for increased selenium bioavailability in the brain of transgenic rats overexpressing selenoprotein M. Int J Mol Med 34: 1688-1698, 2014.
APA
Kim, Y., Goo, J.S., Kim, I.Y., Kim, J.E., Kwak, M.H., Go, J. ... Seong, J.K. (2014). Identification of the responsible proteins for increased selenium bioavailability in the brain of transgenic rats overexpressing selenoprotein M. International Journal of Molecular Medicine, 34, 1688-1698. https://doi.org/10.3892/ijmm.2014.1945
MLA
Kim, Y., Goo, J. S., Kim, I. Y., Kim, J. E., Kwak, M. H., Go, J., Shim, S., Hong, J. T., Hwang, D. Y., Seong, J. K."Identification of the responsible proteins for increased selenium bioavailability in the brain of transgenic rats overexpressing selenoprotein M". International Journal of Molecular Medicine 34.6 (2014): 1688-1698.
Chicago
Kim, Y., Goo, J. S., Kim, I. Y., Kim, J. E., Kwak, M. H., Go, J., Shim, S., Hong, J. T., Hwang, D. Y., Seong, J. K."Identification of the responsible proteins for increased selenium bioavailability in the brain of transgenic rats overexpressing selenoprotein M". International Journal of Molecular Medicine 34, no. 6 (2014): 1688-1698. https://doi.org/10.3892/ijmm.2014.1945