WWTR1(TAZ)-CAMTA1 gene fusion is sufficient to dysregulate YAP/TAZ signaling and drive epithelioid hemangioendothelioma tumorigenesis.
Genes Dev
; 35(7-8): 512-527, 2021 04 01.
Article
in En
| MEDLINE
| ID: mdl-33766982
ABSTRACT
Epithelioid hemangioendothelioma (EHE) is a genetically homogenous vascular sarcoma that is a paradigm for TAZ dysregulation in cancer. EHE harbors a WWTR1(TAZ)-CAMTA1 gene fusion in >90% of cases, 45% of which have no other genetic alterations. In this study, we used a first of its kind approach to target the Wwtr1-Camta1 gene fusion to the Wwtr1 locus, to develop a conditional EHE mouse model whereby Wwtr1-Camta1 is controlled by the endogenous transcriptional regulators upon Cre activation. These mice develop EHE tumors that are indistinguishable from human EHE clinically, histologically, immunohistochemically, and genetically. Overall, these results demonstrate unequivocally that TAZ-CAMTA1 is sufficient to drive EHE formation with exquisite specificity, as no other tumor types were observed. Furthermore, we fully credential this unique EHE mouse model as a valid preclinical model for understanding the role of TAZ dysregulation in cancer formation and for testing therapies directed at TAZ-CAMTA1, TAZ, and YAP/TAZ signaling.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Calcium-Binding Proteins
/
Trans-Activators
/
Hemangioendothelioma, Epithelioid
/
Adaptor Proteins, Signal Transducing
/
Disease Models, Animal
/
Gene Fusion
/
Carcinogenesis
Type of study:
Prognostic_studies
Limits:
Animals
/
Humans
Language:
En
Journal:
Genes Dev
Journal subject:
BIOLOGIA MOLECULAR
Year:
2021
Type:
Article
Affiliation country:
United States