Allele-specific nuclear positioning of the monoallelically expressed astrocyte marker GFAP. Export

@article{citeulike:3483332, abstract = {Chromosomes and genes are nonrandomly arranged within the mammalian cell nucleus. However, the functional significance of nuclear positioning in gene expression is unclear. Here we directly probed the relationship between nuclear positioning and gene activity by comparing the location of the active and inactive copies of a monoallelically expressed gene in single cell nuclei. We demonstrate that the astrocyte-specific marker GFAP (glial fibrillary acidic protein) is monoallelically expressed in cortical astrocytes. Selection of the active allele occurs in a stochastic manner and is generally maintained through cell division. Taking advantage of the monoallelic expression of GFAP, we show that the functionally distinct alleles occupy differential radial positions within the cell nucleus and differentially associate with intranuclear compartments. In addition, coordinately regulated astrocyte-specific genes on distinct chromosomes spatially associate in their inactive state and dissociate upon activation. These results provide direct evidence for function-related differential positioning of individual gene alleles within the interphase nucleus.}, author = {Takizawa, T. and Gudla, P. R. and Guo, L. and Lockett, S. and Misteli, T.}, citeulike-article-id = {3483332}, citeulike-linkout-0 = {http://dx.doi.org/10.1101/gad.1634608}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/18281462}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=18281462}, day = {15}, doi = {10.1101/gad.1634608}, issn = {0890-9369}, journal = {Genes \& development}, keywords = {astrocyte, gfap, monoallelic, nuclear-localization}, month = {February}, number = {4}, pages = {489--498}, posted-at = {2008-11-05 20:46:23}, priority = {0}, title = {Allele-specific nuclear positioning of the monoallelically expressed astrocyte marker GFAP.}, url = {http://dx.doi.org/10.1101/gad.1634608}, volume = {22}, year = {2008} }

TY - JOUR ID - citeulike:3483332 L3 - citeulike-article-id:3483332 N2 - Chromosomes and genes are nonrandomly arranged within the mammalian cell nucleus. However, the functional significance of nuclear positioning in gene expression is unclear. Here we directly probed the relationship between nuclear positioning and gene activity by comparing the location of the active and inactive copies of a monoallelically expressed gene in single cell nuclei. We demonstrate that the astrocyte-specific marker GFAP (glial fibrillary acidic protein) is monoallelically expressed in cortical astrocytes. Selection of the active allele occurs in a stochastic manner and is generally maintained through cell division. Taking advantage of the monoallelic expression of GFAP, we show that the functionally distinct alleles occupy differential radial positions within the cell nucleus and differentially associate with intranuclear compartments. In addition, coordinately regulated astrocyte-specific genes on distinct chromosomes spatially associate in their inactive state and dissociate upon activation. These results provide direct evidence for function-related differential positioning of individual gene alleles within the interphase nucleus. IS - 4 JF - Genes & development SN - 0890-9369 EP - 498 TI - Allele-specific nuclear positioning of the monoallelically expressed astrocyte marker GFAP. VL - 22 SP - 489 KW - astrocyte KW - gfap KW - monoallelic KW - nuclear-localization AU - Takizawa, T AU - Gudla, PR AU - Guo, L AU - Lockett, S AU - Misteli, T PY - 2008/02/15/ UR - http://dx.doi.org/10.1101/gad.1634608 ER -