Identification of RNF213 as a Potential Suppressor of Local Invasion in Intrahepatic Cholangiocarcinoma
Issued Date
2024-07-01
Resource Type
ISSN
00236837
eISSN
15300307
Scopus ID
2-s2.0-85195510211
Pubmed ID
38723854
Journal Title
Laboratory Investigation
Volume
104
Issue
7
Rights Holder(s)
SCOPUS
Bibliographic Citation
Laboratory Investigation Vol.104 No.7 (2024)
Suggested Citation
Chiablaem K., Jinawath A., Nuanpirom J., Arora J.K., Nasaree S., Thanomchard T., Singhto N., Chittavanich P., Suktitipat B., Charoensawan V., Chairoungdua A., Jinn-Chyuan Sheu J., Kiyotani K., Svasti J., Nakamura Y., Jinawath N. Identification of RNF213 as a Potential Suppressor of Local Invasion in Intrahepatic Cholangiocarcinoma. Laboratory Investigation Vol.104 No.7 (2024). doi:10.1016/j.labinv.2024.102074 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/98808
Title
Identification of RNF213 as a Potential Suppressor of Local Invasion in Intrahepatic Cholangiocarcinoma
Author's Affiliation
Laboratory of Biochemistry
National Institutes of Biomedical Innovation, Health and Nutrition
Siriraj Hospital
Japanese Foundation for Cancer Research
Faculty of Medicine Ramathibodi Hospital, Mahidol University
Mahidol University
Kaohsiung Medical University
National Sun Yat-Sen University
China Medical University
National Institutes of Biomedical Innovation, Health and Nutrition
Siriraj Hospital
Japanese Foundation for Cancer Research
Faculty of Medicine Ramathibodi Hospital, Mahidol University
Mahidol University
Kaohsiung Medical University
National Sun Yat-Sen University
China Medical University
Corresponding Author(s)
Other Contributor(s)
Abstract
Intrahepatic cholangiocarcinoma (ICC) is a lethal cancer with poor survival especially when it spreads. The histopathology of its rare intraductal papillary neoplasm of the bile duct type (IPNB) characteristically shows cancer cells originating within the confined bile duct space. These cells eventually invade and infiltrate the nearby liver tissues, making it a good model to study the mechanism of local invasion, which is the earliest step of metastasis. To discover potential suppressor genes of local invasion in ICC, we analyzed the somatic mutation profiles and performed clonal evolution analyses of the 11 pairs of macrodissected locally invasive IPNB tissues (LI-IPNB) and IPNB tissues without local invasion from the same patients. We identified a protein-truncating variant in an E3 ubiquitin ligase, RNF213 (c.6967C>T; p.Gln2323X; chr17: 78,319,102 [hg19], exon 29), as the most common protein-truncating variant event in LI-IPNB samples (4/11 patients). Knockdown of RNF213 in HuCCT1 and YSCCC cells showed increased migration and invasion, and reduced vasculogenic mimicry but maintained normal proliferation. Transcriptomic analysis of the RNF213-knockdown vs control cells was then performed in the HuCCT1, YSCCC, and KKU-100 cells. Gene ontology enrichment analysis of the common differentially expressed genes revealed significantly altered cytokine and oxidoreductase-oxidizing metal ion activities, as confirmed by Western blotting. Gene Set Enrichment Analysis identified the most enriched pathways being oxidative phosphorylation, fatty acid metabolism, reactive oxygen species, adipogenesis, and angiogenesis. In sum, loss-of-function mutation of RNF213 is a common genetic alteration in LI-IPNB tissues. RNF213 knockdown leads to increased migration and invasion of ICC cells, potentially through malfunctions of the pathways related to inflammation and energy metabolisms.