Epigenetic regulation of the genome.
Our laboratory is interested in epigenetic control of genome organization, which allows for heritable changes in gene function that are not due to changes in the DNA sequence. In eukaryotic cells, genomic DNA is folded with histone and non-histone proteins in the form of chromatin. The building block of chromatin is the nucleosome, which contains 146 bp of DNA wrapped around an octamer of histones. Factors involved in covalent modifications of histones, together with chromatin-remodeling activities and DNA modifications, are components of intricate epigenetic mechanisms that help organize genomes into discrete domains that plays important regulatory roles in almost every aspect of DNA metabolism. These epigenetic mechanisms gradually restrict the developmental potential of stem cells during differentiation and also constitute “memories” of gene activity that ensure faithful inheritance of cell identity. Defects in epigenetic regulation have been extensively demonstrated to have causal roles in numerous developmental disorders and cancers.
- Shan, C., Wang, J., Xu, K., Chen, H., Yue, J., Andrews, S., Moresco, J.J., Yates, J.R., Nagy, P.L., Tong, L., and Jia, S. (2016). A histone H3K9M mutation traps histone methyltransferase Clr4 to prevent heterochromatin spreading. Elife doi: 10.7554/elife.17903. Article
- Wang, J., Cohen, A.L., Letian, A., Tadeo, X., Moresco, J.J., Liu, J., Yates, J.R., Qiao, F., and Jia, S. (2016). The proper connection between shelterin components is required for telomeric heterochromatin assembly. Genes Dev. 30(7): 827-839. Article
- Wang, J., Reddy, B.D., and Jia, S. (2015). Rapid epigenetic adaptation to uncontrolled heterochromatin spreading. Elife doi:10.7554/elife.06179. Article
- Wang, J., Tadeo, X., Hou, H., Andrews, S., Moresco, J.J., Yates, J.R., Nagy, P.L., and Jia, S. (2014). Tls1 regulates splicing of shelterin components to control telomeric heterochromatin assembly and telomere length. Nucleic Acids Res. 42(18): 11419-32. Article
- Kallgren, S.P., Andrews, S., Tadeo, X., Hou, H., Moresco, J.J, Tu, P.G., Yates, J.R., Nagy, P., and Jia, S.(2014). The proper splicing of RNAi factors is critical for pericentric heterochromatin assembly in fission yeast. PLoS Genet. 10(5):e1004334. Article
- Tadeo, X., Wang, J., Kallgren, S.P., Liu, J., Reddy, B.D., Quio, F., and Jia, S. (2013). Elimination of shelterin components bypasses RNAi for pericentric heterochromatin assembly. Genes Dev. 27(22): 2489-99. Article
- Wang, J., Tadeo, X., Hou, H., Tu, P.G., Thompson, J., Yates, J.R., and Jia, S. (2013). Epe1 recruits BET family bromodomain protein Bdf2 to establish heterochromatin boundaries. Genes Dev. 27(17): 1886-902. Article
- Hou, H., Zhou, Z., Wang, Y., Wang, J., Kallgren, S.P., Kurchuk, T., Miller, E.A., Chang, F., and Jia, S.(2012) Csi1 links centromeres to the nuclear envelope for centromere clustering. J. Cell Biol. 199(5): 735-44. Article
- Reddy, B.D., Wang, Y., Niu, L., Higuchi, E.C., Marguerat, S.B., Bahler, J., Smith, G.R. and Jia, S. (2011) Elimination of a specific histone H3K14 acetyltransferase complex bypasses the RNAi pathway to regulate pericentric heterochromatin functions Genes. Dev 25(3): 214-219. Article
- Wang, Y., Reddy, B.D., Thompson, J., Wang, H., Noma, K., Yates, J.R. and Jia, S. (2009) Regulation of Set9-mediated H4K20 methylation by a PWWP domain protein. Mol. Cell 33(4): 428-437. Article
- Grewal, S.I. and Jia, S. (2007) Heterochromatin revisited Nature Review Genetics 8(1): 35-46. Article