It is published!!!!!
Epigenetic control of melanoma cell invasiveness by the stem cell factor SALL4
A great collaboration with Lukas sommer lab at the University of Zurich showing that the embryonic stem cell transcription factor SALL4 regulates phenotype switching in melanoma through an HDAC2-mediated mechanism.
It is published!!!!!
BAZ2A-mediated repression via H3K14ac-marked enhancers promotes prostate cancer stem cells
>Full Text Article
Prostate cancer (PCa) is one of the most prevalent cancers in men. Unfortunately, current therapeutic approaches for PCa remain insufficient for some patients with progressive disease. Targeting of the androgen receptor (AR) axis in patients with PCa relapse was shown to be efficient only for a short period of time. These treatments are not curative; a population of cells resistant to androgen-deprivation therapy emerges and PCa becomes unresponsive and progresses to a castrate-resistant prostate cancer and metastasis, with limited treatment options. Due to the enticing possibility that PCa aggressiveness and relapse arises from PCa stem cells, the development of stem cell-specific anticancer drugs constitutes an attempt to innovate in the treatment of PCa.
Here we show that BAZ2A is an epigenetic reader of H3K14ac and regulates prostate cancer stem cells though its association with inactive enhancers marked by H3K14ac.
The BAZ2A-bromodomain (BRD) is an epigenetic reader of H3K14ac.
BAZ2A associates with H3K14ac-marked inactive enhancers that repress genes frequently silenced in aggressive PCa.
The H3K14 acetyltransferase EP300 is required for the repression of BAZ2A-target genes in PCa cells.
Pharmacological inactivation of BAZ2A with BAZ2A-BRD inhibitors impairs PCa stem cells and PTEN-loss mediated oncogenic transformation using PCa organoids.
Our findings indicate a role of BAZ2A-BRD in PCa stem cell features and suggest potential epigenetic-reader therapeutic strategies to target BAZ2A in aggressive PCa.
Congratulations to Kaivalya for being awarded with the EMBO postdoctoral fellowship!
Congratulations to Valdemar for being awarded with the Zurich KrebsLiga grant!
Valdemar will work on a collaborative project with Jean-Pierre Bourquin group at the University Hospital Zurich and our group that aims to elucidate the molecular mechanisms of the transcriptional circuitries controlled by the the chimeric fusion transcription factor TCF3-HLF that drives a lethal leukemia with fatal outcome.
It is finally out!
Open access Introduction to Epigenetics.
After only 2 months >21K downloads!
This book was inspired by the course “Epigenetics” at ETH Zurich that myself together with Renato Paro, Ueli Grossniklaus, and Anton Wutz are carrying on.
The first chapters provide an introduction to the biology of chromatin with all the components and cellular processes that establish the toolbox of epigenetic mechanisms. In the following chapters, complex epigenetic phenomena are illustrated by explaining the structures and principles of the underlying molecular mechanisms. Towards the end of the book, two chapters examine environmental influences on epigenetic control and epigenetic misregulation in human disease.
Finally out!!!! BAZ2A safeguards genome architecture of ground-state pluripotent stem cells.
>Full Text Article
Our work showing how genome architecture is regulated in ground-state ESCs is published in EMBOJ! From now on we are using the official name of TIP5... Baz2a!
How genome organization is regulated in embryonic stem cells (ESC) according to cell state and chromatin structure remains elusive. Here, the systematic comparison between ground-state mouse ESCs (ESC+2i) and developmentally advanced ESCs (ESC+serum) reveals that Baz2a (TIP5) is a critical regulator of genome partitioning and cell identity.
BAZ2A binds at active and open genome and supports growth of ground-state but not advanced ESCs.
BAZ2A interacts with SNF2H, TOP2A and cohesin on ESC chromatin.
BAZ2A associates with chromatin sub-domains within the active A-compartment that intersect through long-range contacts.
BAZ2A deletion perturbs gene expression and histone H3K27 trimethylation in ground-state ESCs.
BAZ2A limits invasion of ESC active chromatin into inactive domains.
Congratulations to Marcin for being awarded with the prestigious Forschungskredit of the University of Zurich!
Our work on prostate cancer is published in PNAS!
TIP5 primes prostate luminal cells for the oncogenic transformation mediated by PTEN-loss
We modeled prostate cancer initiation using organoids and showed that TIP5 (BAZ2A) is critical for the initiation of PCa of luminal origin mediated by Pten-loss whereas it is dispensable once Pten-loss mediated transformation is established. The order of events matters! Cross-species transcriptomic analyses (patients and murine prostate cancer organoids) revealed a PTEN-loss gene signature that identified a set of aggressive tumors with PTEN deletion, or low PTEN expression, and high-TIP5 expression. This work provides a powerful tool to elucidate prostate cancer mechanisms.
Our review on the regulation of the nucleolus and rRNA gene chromatin during ealy development is now published in Trends in Genetics with a dedicated cover.
Congrats to Cristiana, who won the prize for best PhD poster for her work on the identification of nucleolar associated domains (NADs) at the Epigenesys Conference in London!
Congratulations to Cristiana and her group for the best project proposal at the 3rd NCCR RNA & Disease Summer School (August 26th-30th 2019, Saas-Fee prize)!
Our review in Trends in Genetics “Nucleolus and rRNA Gene Chromatin in Early Embryo Development” is published online
June 24, 2019
Congratulations to Karolina for her successful PhD defense!
Our review in Cells “Genome Organization in and around the Nucleolus” is published
We have been awarded a collaborative grant from the Cancer Research Center Zurich. This collaboration between Jean-Pierre Bourquin group at the University Hospital Zurich and our group aims to elucidate the molecular mechanisms of the transcriptional circuitries controlled by the the chimeric fusion transcription factor TCF3-HLF that drives a lethal leukemia with fatal outcome.
May 20, 2019
Congratulations to Rodrigo for his successful PhD defense!
Congratulations to Rodrigo for the “Poster prize" at the 1st Comprehensive Cancer Center Zürich Scientific Retreat 2019
"Pharmacological targeting of the epigenetic reader TIP5-bromodomain impairs prostate cancer stem cells”
Our second joint lab retreat with the groups of Constance Ciaudo (ETH Zurich) and Ana Marques (University of Lausanne). 3 days full of great science and fun in Diemtigtal, Berner Oberland
Registration for the 3rd NCCR RNA & Disease Summer School is now open
Raffaella Santoro, Constance Ciaudo (ETH Zurich) and Ana Claudia Marques (University of Lausanne) will organize this year the third NCCR RNA & Disease Summer School on "RNA Regulation in Health and Disease: Genome architecture and gene expression - RNA turnover - Epitranscriptomics - Phase separation"
This event will take place in Saas-Fee, Switzerland from August 26th to 30th 2019.
The Summer School provides the opportunity to share ideas and learn from leading scientists in the field - check out the stunning lineup of speakers on the flyer below. The program consists of keynote presentations by invited speakers, workshops in small groups, group discussions lead by the invited speakers, flash talks by participating students and postdocs and plenty of opportunities for networking.