PMID- 29673952 OWN - NLM STAT- MEDLINE DCOM- 20181026 LR - 20220409 IS - 1878-3562 (Electronic) IS - 1590-8658 (Linking) VI - 50 IP - 6 DP - 2018 Jun TI - Expression of C19MC miRNAs in HCC associates with stem-cell features and the cancer-testis genes signature. PG - 583-593 LID - S1590-8658(18)30667-4 [pii] LID - 10.1016/j.dld.2018.03.026 [doi] AB - BACKGROUND: Intratumor heterogeneity of hepatocellular carcinoma (HCC) and, among HCC cell subsets, the cancer stem cell population (hCSC), is responsible for therapeutic resistance and disease relapse. AIMS: To characterize hCSC-enriched HCCs at the molecular level. METHODS: Side population (SP) was used to identify the hCSCs in multiple tumor sampling from different patients and primary HCCs cultures. FACS was used to immunoprofile cultures. miRNAs were profiled in samples and correlated to SP. The Cancer Genome Atlas (TCGA) HCC dataset was analyzed to search for signatures associated with C19MC miRNAs expression. Results were confirmed by immunohistochemistry. RESULTS: The miRNA cluster on chromosome 19 (C19MC) was enriched in SP and in HCCs with a high SP fraction. At the molecular level, an elevated C19MC was correlated with expression of precursor transcripts. In TCGA-HCC series, high C19MC expression identified a subset of patients with poorer prognosis, advanced disease and overexpression of the cancer-testis (CT) antigens. These data were confirmed in an independent cohort of HCCs and at the protein level. CONCLUSION: C19MC miRNAs and CT antigens overexpression represents a novel oncogenic pathway in a subset of hCSC-enriched HCCs with dismal prognosis. CT antigens are promising immunotherapy targets. Therefore, these molecular signatures could identify HCCs who could benefit from immunotherapy. CI - Copyright (c) 2018 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved. FAU - Augello, Claudia AU - Augello C AD - Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Divisions of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Colombo, Federico AU - Colombo F AD - Clinical Chemistry and Microbiology Laboratory, Flow Cytometry and Experimental Hepatology Service, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Terrasi, Andrea AU - Terrasi A AD - Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Divisions of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Trombetta, Elena AU - Trombetta E AD - Clinical Chemistry and Microbiology Laboratory, Flow Cytometry and Experimental Hepatology Service, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Maggioni, Marco AU - Maggioni M AD - Divisions of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Porretti, Laura AU - Porretti L AD - Clinical Chemistry and Microbiology Laboratory, Flow Cytometry and Experimental Hepatology Service, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Rossi, Giorgio AU - Rossi G AD - Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; General Surgery and Liver Transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Guerneri, Silvana AU - Guerneri S AD - Laboratory of Medical Genetics, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Silipigni, Rosamaria AU - Silipigni R AD - Laboratory of Medical Genetics, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. FAU - Bosari, Silvano AU - Bosari S AD - Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Divisions of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: silvano.bosari@unimi.it. FAU - Vaira, Valentina AU - Vaira V AD - Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy; Divisions of Pathology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy. Electronic address: valentina.vaira@unimi.it. LA - eng PT - Journal Article DEP - 20180330 PL - Netherlands TA - Dig Liver Dis JT - Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver JID - 100958385 RN - 0 (Antigens, Neoplasm) RN - 0 (MicroRNAs) SB - IM MH - Animals MH - Antigens, Neoplasm/genetics MH - Carcinogenesis/genetics MH - Carcinoma, Hepatocellular/*pathology MH - Chromosomes, Human, Pair 19/*genetics MH - Cohort Studies MH - Female MH - Gene Expression Profiling MH - *Gene Expression Regulation, Neoplastic MH - Humans MH - Immunohistochemistry MH - Liver Neoplasms/*pathology MH - Male MH - Mice, Inbred NOD MH - Mice, Knockout MH - Mice, SCID MH - MicroRNAs/*genetics MH - Neoplasm Transplantation MH - Neoplastic Stem Cells/*cytology MH - Side-Population Cells/cytology OTO - NOTNLM OT - C19MC miRNAs OT - CT antigens OT - HCC OT - Side Population EDAT- 2018/04/21 06:00 MHDA- 2018/10/27 06:00 CRDT- 2018/04/21 06:00 PHST- 2017/07/11 00:00 [received] PHST- 2018/03/20 00:00 [revised] PHST- 2018/03/22 00:00 [accepted] PHST- 2018/04/21 06:00 [pubmed] PHST- 2018/10/27 06:00 [medline] PHST- 2018/04/21 06:00 [entrez] AID - S1590-8658(18)30667-4 [pii] AID - 10.1016/j.dld.2018.03.026 [doi] PST - ppublish SO - Dig Liver Dis. 2018 Jun;50(6):583-593. doi: 10.1016/j.dld.2018.03.026. Epub 2018 Mar 30.