Long-Range Transcriptional Control by 3D Chromosome Structure (Luca Giorgetti)

Published: Aug. 24, 2023, 7:01 a.m.

In this episode of the Epigenetics Podcast, we caught up with Luca Giorgetti from the Friedrich Miescher Institute to hear about his work on long-range transcriptional control by 3D chromosome structure.\nLuca Giorgetti's research focuses on chromosomal interactions, transcriptional output, and the dynamics of enhancer-promoter relationships. His lab investigated the causal relationship between chromosome interactions and transcriptional events. They\u2019ve found that by manipulating the contact probabilities between an enhancer and a promoter by changing their distance, these changes had a substantial effect on transcription levels. This project was an experiment that Luca Giorgetti was eager to do, and it allowed him to establish a smooth functional relationship between contact probabilities and changes in transcription levels.\n\xa0\nReferences\n\nGiorgetti, L., Galupa, R., Nora, E. P., Piolot, T., Lam, F., Dekker, J., Tiana, G., & Heard, E. (2014). Predictive polymer modeling reveals coupled fluctuations in chromosome conformation and transcription. Cell, 157(4), 950\u2013963. https://doi.org/10.1016/j.cell.2014.03.025\n\n\nRedolfi, J., Zhan, Y., Valdes-Quezada, C., Kryzhanovska, M., Guerreiro, I., Iesmantavicius, V., Pollex, T., Grand, R. S., Mulugeta, E., Kind, J., Tiana, G., Smallwood, S. A., de Laat, W., & Giorgetti, L. (2019). DamC reveals principles of chromatin folding in vivo without crosslinking and ligation. Nature structural & molecular biology, 26(6), 471\u2013480. https://doi.org/10.1038/s41594-019-0231-0\n\n\nZuin, J., Roth, G., Zhan, Y., Cramard, J., Redolfi, J., Piskadlo, E., Mach, P., Kryzhanovska, M., Tihanyi, G., Kohler, H., Eder, M., Leemans, C., van Steensel, B., Meister, P., Smallwood, S., & Giorgetti, L. (2022). Nonlinear control of transcription through enhancer-promoter interactions. Nature, 604(7906), 571\u2013577. https://doi.org/10.1038/s41586-022-04570-y\n\n\nMach, P., Kos, P. I., Zhan, Y., Cramard, J., Gaudin, S., T\xfcnnermann, J., Marchi, E., Eglinger, J., Zuin, J., Kryzhanovska, M., Smallwood, S., Gelman, L., Roth, G., Nora, E. P., Tiana, G., & Giorgetti, L. (2022). Cohesin and CTCF control the dynamics of chromosome folding. Nature genetics, 54(12), 1907\u20131918. https://doi.org/10.1038/s41588-022-01232-7\n\xa0\n\nRelated Episodes\n\nscDamID, EpiDamID and Lamina Associated Domains (Jop Kind)\n\n\nEpigenetics and X-Inactivation (Edith Heard)\n\n\nSpatial Organization of the Human Genome (Wendy Bickmore)\n\n\xa0\nContact\n\nEpigenetics Podcast on Twitter\n\n\nEpigenetics Podcast on Instagram\n\n\nEpigenetics Podcast on Mastodon\n\n\nActive Motif on Twitter\n\n\nActive Motif on LinkedIn\n\n\nEmail: podcast@activemotif.com