alexa Regulation of alpha-synuclein expression by liver X receptor ligands in vitro.


Journal of Alzheimers Disease & Parkinsonism

Author(s): Cheng D, Kim WS, Garner B

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Alpha-synuclein is a lipid-binding protein expressed in neurons and oligodendrocytes which is increased in Parkinson's disease. We identified two putative liver X receptor (LXR) response elements in the human alpha-synuclein gene and used synthetic (TO901317, GW3695) and physiological (27-hydroxycholesterol) LXR activators to assess regulation of alpha-synuclein. LXR ligands upregulated alpha-synuclein mRNA by two-five-fold in human SK-N-SH neurons and three-six-fold in human MO3.13 oligodendrocytes. Significant 50% to four-fold induction of alpha-synuclein protein was also detected. Under these conditions, mRNA for LXR-responsive gene ABCA1 was significantly upregulated 15-40-fold and 5-25-fold in neurons and oligodendrocytes, respectively. LXR may, therefore, contribute to the regulation of alpha-synuclein expression in neurons and oligodendrocytes.

This article was published in Neuroreport and referenced in Journal of Alzheimers Disease & Parkinsonism

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