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alpha-Synuclein abnormalities in mouse models of peroxisome biogenesis disorders.

J. Neurosci. Res.2010 Mar;88(4):866-76. doi:10.1002/jnr.22246
Eugenia Yakunin 1 , Ann Moser , Virginie Loeb , Ann Saada , Phyllis Faust , Denis I Crane , Myriam Baes , Ronit Sharon
Eugenia Yakunin 1 , Ann Moser , Virginie Loeb , Ann Saada , Phyllis Faust , Denis I Crane , Myriam Baes , Ronit Sharon
+ et al

[No authors listed]

Author information
  • 1 Department of Biochemistry and Molecular Biology, The Institute for Medical Research-Israel Canada, Hebrew University, Jerusalem, Israel.

摘要


alpha-Synuclein (alphaS) is a presynaptic protein implicated in Parkinson's disease (PD). Growing evidence implicates mitochondrial dysfunction, oxidative stress, and alphaS-lipid interactions in the gradual accumulation of alphaS in pathogenic forms and its deposition in Lewy bodies, the pathological hallmark of PD and related synucleinopathies. The peroxisomal biogenesis disorders (PBD), with Zellweger syndrome serving as the prototype of this group, are characterized by malformed and functionally impaired peroxisomes. Here we utilized the PBD mouse models Pex2-/-, Pex5-/-, and Pex13-/- to study the potential effects of peroxisomal dysfunction on alphaS-related pathogenesis. We found increased alphaS oligomerization and phosphorylation and its increased deposition in cytoplasmic inclusions in these PBD mouse models. Furthermore, we show that alphaS abnormalities correlate with the altered lipid metabolism and, specifically, with accumulation of long chain, n-6 polyunsaturated fatty acids that occurs in the PBD models.