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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Landsberger, Nicoletta Salvatoni, Lisa Rusconi, Laura Broccoli, Vania Bertani, Ilaria Giudici, Laura Kilstrup-nielsen, Charlotte |
| Description | Author Affiliation: Rusconi L ( Department of Structural and Functional Biology, University of Insubria, Via Alberto da Giussano 12, 21052 Busto Arsizio (VA), Italy.) |
| Abstract | Mutations in the human X-linked cyclin-dependent kinase-like 5 (CDKL5) gene have been identified in patients with Rett syndrome (RTT), West syndrome, and X-linked infantile spasms, sharing the common feature of mental retardation and early seizures. CDKL5 is a rather uncharacterized kinase, but its involvement in RTT seems to be explained by the fact that it works upstream of MeCP2, the main cause of Rett syndrome. To understand the role of this kinase for nervous system functions and to address if molecular mechanisms are involved in regulating its distribution and activity, we studied the ontogeny of CDKL5 expression in developing mouse brains by immunostaining and Western blotting. The expression profile of CDKL5 was compared with that of MeCP2. The two proteins share a general expression profile in the adult mouse brain, but CDKL5 levels appear to be highly modulated at the regional level. Its expression is strongly induced in early postnatal stages, and in the adult brain CDKL5 is present in mature neurons, but not in astroglia. Interestingly, the presence of CDKL5 in the cell nucleus varies at the regional level of the adult brain and is developmentally regulated. CDKL5 shuttles between the cytoplasm and the nucleus and the C-terminal tail is involved in localizing the protein to the cytoplasm in a mechanism depending on active nuclear export. Accordingly, Rett derivatives containing disease-causing truncations of the C terminus are constitutively nuclear, suggesting that they might act as gain of function mutations in this cellular compartment. |
| ISSN | 00219258 |
| e-ISSN | 1083351X |
| Journal | Journal of Biological Chemistry |
| Issue Number | 44 |
| Volume Number | 283 |
| Language | English |
| Publisher | American Society for Biochemistry and Molecular Biology (United States) |
| Publisher Date | 2008-10-31 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gene Expression Regulation, Developmental Gene Expression Regulation Neurons Metabolism Protein-Serine-Threonine Kinases Genetics Physiology Animals Brain Cell Nucleus HeLa Cells Mice Mice, Inbred C57BL Protein Structure, Tertiary Subcellular Fractions Research Support, Non-U.S. Gov't Biochemistry Molecular Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Biochemistry Molecular Biology |
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