NDLI: Temporal and regional differences in the olfactory proteome as a consequence of MeCP2 deficiency

Content Provider	PubMed Central
Author	Matarazzo, Valéry Ronnett, Gabriele V.
Copyright Year	2004
Abstract	Rett syndrome (RTT) is a neurodevelopmental disorder caused by mutations in the gene encoding MeCP2. By binding to methylated CpG dinucleotide promoter regions, MeCP2 acts as a transcriptional repressor, predicting that its absence might result in widespread aberrant gene transcription, leading to the RTT phenotype. Considering this potentially broad action of MeCP2 on expression and the complexity of the brain, especially during development, we approached the consequences of MeCP2 deficiency in a mouse model by using a temporal and regional proteomic strategy. We used the olfactory system (olfactory epithelium and bulb) because its attributes make it an excellent developmental model system. We find evidence of temporal and regional proteomic pattern differences between WT and MeCP2-deficient mice. It was possible to segregate these changes in protein expression into five biological function groups: cytoskeleton arrangement, chromatin modeling, energy metabolism, cell signaling, and neuroprotection. By combining the proteomic results with the RNA levels of the identified proteins, we show that protein expression changes are the consequence of differences in mRNA level or posttranslational modifications. We conclude that brain regions and ages must be carefully considered when investigating MeCP2 deficiency, and that not only transcription should be taken into account as a source for these changes, but posttranslational protein modifications as well.
Related Links	http://dx.doi.org/10.1073/pnas.0307083101
Ending Page	7768
Page Count	6
Starting Page	7763
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	20
Volume Number	101
Language	English
Publisher	National Academy of Sciences
Publisher Date	2004-05-18
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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