TROP2 Represents a Negative Prognostic Factor in Colorectal Adenocarcinoma and Its Expression Is Associated with Features of Epithelial-Mesenchymal Transition and Invasiveness

0561378 - ÚMG 2023 RIV CH eng J - Journal Article
Švec, Jiří - Šťastná, Monika - Janečková, Lucie - Hrčkulák, Dušan - Vojtěchová, Martina - Onhajzer, Jakub - Kříž, Vítězslav - Galušková, Kateřina - Šloncová, Eva - Kubovčiak, Jan - Pfeiferová, Lucie - Hrudka, J. - Matěj, R. - Waldauf, P. - Havluj, L. - Kolář, Michal - Kořínek, Vladimír
TROP2 Represents a Negative Prognostic Factor in Colorectal Adenocarcinoma and Its Expression Is Associated with Features of Epithelial-Mesenchymal Transition and Invasiveness.
Cancers (Basel). Roč. 14, č. 17 (2022), č. článku 4137. E-ISSN 2072-6694
R&D Projects: GA ČR(CZ) GA18-26324S; GA MŠMT LX22NPO5102; GA MŠMT(CZ) LM2018129; GA MŠMT(CZ) EF16_019/0000785
Institutional support: RVO:68378050
Keywords : apc * colorectal cancer * emt * expression profiling * organoids * tacstd2 * WNT/beta-catenin signaling
OECD category: Oncology
Impact factor: 5.2, year: 2022
Method of publishing: Open access
https://doi.org/10.3390/cancers14174137

Trophoblastic cell surface antigen 2 (TROP2) is a membrane glycoprotein overexpressed in many solid tumors with a poor prognosis, including intestinal neoplasms. In our study, we show that TROP2 is expressed in preneoplastic lesions, and its expression is maintained in most colorectal cancers (CRC). High TROP2 positivity correlated with lymph node metastases and poor tumor differentiation and was a negative prognostic factor. To investigate the role of TROP2 in intestinal tumors, we analyzed two mouse models with conditional disruption of the adenomatous polyposis coli (Apc) tumor-suppressor gene, human adenocarcinoma samples, patient-derived organoids, and TROP2-deficient tumor cells. We found that Trop2 is produced early after Apc inactivation and its expression is associated with the transcription of genes involved in epithelial-mesenchymal transition, the regulation of migration, invasiveness, and extracellular matrix remodeling. A functionally similar group of genes was also enriched in TROP2-positive cells from human CRC samples. To decipher the driving mechanism of TROP2 expression, we analyzed its promoter. In human cells, this promoter was activated by beta-catenin and additionally by the Yes1-associated transcriptional regulator (YAP). The regulation of TROP2 expression by active YAP was verified by YAP knockdown in CRC cells. Our results suggest a possible link between aberrantly activated Wnt/beta-catenin signaling, YAP, and TROP2 expression.
Permanent Link: https://hdl.handle.net/11104/0338612