E-resources
-
Artegiani, Benedetta; van Voorthuijsen, Lisa; Lindeboom, Rik G.H.; Seinstra, Daniëlle; Heo, Inha; Tapia, Pablo; López-Iglesias, Carmen; Postrach, Daniel; Dayton, Talya; Oka, Rurika; Hu, Huili; van Boxtel, Ruben; van Es, Johan H.; Offerhaus, Johan; Peters, Peter J.; van Rheenen, Jacco; Vermeulen, Michiel; Clevers, Hans
Cell stem cell, 06/2019, Volume: 24, Issue: 6Journal Article
The deubiquitinating enzyme BAP1 is a tumor suppressor, among others involved in cholangiocarcinoma. BAP1 has many proposed molecular targets, while its Drosophila homolog is known to deubiquitinate histone H2AK119. We introduce BAP1 loss-of-function by CRISPR/Cas9 in normal human cholangiocyte organoids. We find that BAP1 controls the expression of junctional and cytoskeleton components by regulating chromatin accessibility. Consequently, we observe loss of multiple epithelial characteristics while motility increases. Importantly, restoring the catalytic activity of BAP1 in the nucleus rescues these cellular and molecular changes. We engineer human liver organoids to combine four common cholangiocarcinoma mutations (TP53, PTEN, SMAD4, and NF1). In this genetic background, BAP1 loss results in acquisition of malignant features upon xenotransplantation. Thus, control of epithelial identity through the regulation of chromatin accessibility appears to be a key aspect of BAP1’s tumor suppressor function. Organoid technology combined with CRISPR/Cas9 provides an experimental platform for mechanistic studies of cancer gene function in a human context. Display omitted •BAP1 loss affects cell polarity and epithelial organization in human liver tissue•BAP1 controls chromatin accessibility of junctional and cytoskeletal genes•Rescuing BAP1 catalytic activity in the nucleus restores epithelial organization•In an engineered human cancer model, malignant features are induced upon BAP1 loss Artegiani et al. show that BAP1 mutation in human liver organoids coincides with loss of multiple epithelial characteristics through impairment of chromatin accessibility and gene expression, and this is critical for the acquisition of malignant features in a human model of cholangiocarcinoma.
Author
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|
Source: Personal bibliographies
and: SICRIS
The material is available in full text. If you wish to order the material anyway, click the Continue button.