1
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An evaluation of the association between radiological parameters and survival outcomes in pediatric patients with hepatoblastoma. Pediatr Surg Int 2022; 38:1591-1600. [PMID: 36097077 DOI: 10.1007/s00383-022-05208-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 08/26/2022] [Indexed: 10/14/2022]
Abstract
BACKGROUND We evaluated the survival outcomes following hepatic resection as a treatment modality in pediatric patients with hepatoblastoma at a single institution, and to identify radiological parameters associated with poorer survival outcomes. METHODS This was a retrospective cohort study. Medical records were reviewed, pertaining to pediatric patients diagnosed with hepatoblastoma who underwent surgical resection at a university hospital in Thailand between 2004 and 2021. Radiological parameters, clinical factors, and pathological data were also collected. Survival analysis was performed, and prognostic factors were identified using logistic regression analysis. RESULTS Forty-two suitable patients were identified. Three cases with incomplete data were excluded, resulting in 39 cases being analyzed. Except for two, all patients received preoperative chemotherapy following the Thai Pediatric Oncology Group regimen. The two- and five-year overall survival rates were 78.0% and 70.9%, respectively. Upon analysis, the radiological parameters associated with poorer survival were poor response to neoadjuvant chemotherapy, presence of metastasis, post-chemotherapy tumor diameter, Post treatment extent of disease (POSTTEXT) Stage IV disease, presence of portal vein involvement, and presence of residual disease; poor neoadjuvant-response, portal vein involvement, and metastasis were independently associated with worse outcomes. In patients with non-metastatic hepatoblastoma who had at least a 25% reduction in size following neoadjuvant chemotherapy, the 5-year survival rate was 90.9% (95% CI 50.8-98.6%). CONCLUSIONS Although preoperative evaluation of the tumor extent staging did not significantly affect survival, portal vein involvement as per POSTTEXT staging, stable or increasing tumor size, and metastasis following neoadjuvant chemotherapy were associated with poor overall survival. LEVEL OF EVIDENCE IIB.
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2
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Fragoulis A, Schenkel J, Schröder N, Brandt EF, Weiand M, Neu T, Ramadori P, Caspers T, Kant S, Pufe T, Mohs A, Trautwein C, Longerich T, Streetz KL, Wruck CJ. Nrf2 induces malignant transformation of hepatic progenitor cells by inducing β-catenin expression. Redox Biol 2022; 57:102453. [PMID: 36209041 PMCID: PMC9618468 DOI: 10.1016/j.redox.2022.102453] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 07/22/2022] [Accepted: 08/19/2022] [Indexed: 11/28/2022] Open
Abstract
The Nrf2 signaling pathway prevents cancer initiation, but genetic mutations that activate this pathway are found in various types of cancer. The molecular mechanisms underlying this Janus-headed character are still not understood. Here, we show that sustained Nrf2 activation induces proliferation and dedifferentiation of a Wnt-responsive perivenular hepatic progenitor cell population, transforming them into metastatic cancer cells. The neoplastic lesions display many histological features known from human hepatoblastoma. We describe an Nrf2-induced upregulation of β-catenin expression and its activation as the underlying mechanism for the observed malignant transformation. Thus, we have identified the Nrf2–β-catenin axis promoting proliferation of hepatic stem cells and triggering tumorigenesis. These findings support the concept that different functional levels of Nrf2 control both the protection against various toxins as well as liver regeneration by activating hepatic stem cells. Activation of the hepatic stem cell compartment confers the observation that unbridled Nrf2 activation may trigger tumorigenesis.
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Affiliation(s)
| | - Julia Schenkel
- Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Germany
| | - Nicole Schröder
- Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Germany
| | | | - Mathias Weiand
- Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Germany
| | - Tabita Neu
- Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Germany
| | - Pierluigi Ramadori
- Division of Chronic Inflammation and Cancer, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tim Caspers
- Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Germany
| | - Sebastian Kant
- Institute of Molecular and Cellular Anatomy, Uniklinik RWTH Aachen, Germany
| | - Thomas Pufe
- Department of Anatomy and Cell Biology, Uniklinik RWTH Aachen, Germany
| | - Antje Mohs
- Department of Medicine III, Uniklinik RWTH Aachen, Germany
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3
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Kahana-Edwin S, McCowage G, Cain L, Saletta F, Yuksel A, Graf N, Karpelowsky J. Exploration of CTNNB1 ctDNA as a putative biomarker for hepatoblastoma. Pediatr Blood Cancer 2020; 67:e28594. [PMID: 32881242 DOI: 10.1002/pbc.28594] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/22/2020] [Accepted: 06/25/2020] [Indexed: 12/22/2022]
Abstract
Driver mutations in the CTNNB1 gene (encoding β-catenin) are a hallmark of sporadic hepatoblastoma (HBL). Our results show that CTNNB1 circulating tumour DNA (ctDNA) is readily detected in patients diagnosed with localised HBL, with serial sampling along the course of therapy and follow up providing a sensitive mechanism to monitor tumour dynamics and response to treatment. This exciting potential for CTNNB1 ctDNA to serve as a biomarker for treatment response in HBL holds clinical value, and requires assessment in a larger cohort of mixed tumour stages and recurrent disease.
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Affiliation(s)
- Smadar Kahana-Edwin
- Children's Cancer Research Unit, Kids Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Geoffrey McCowage
- Cancer Centre for Children, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Lucy Cain
- Cancer Centre for Children, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Federica Saletta
- Children's Cancer Research Unit, Kids Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Aysen Yuksel
- The Tumour Bank, Children's Cancer Research Unit, Kids Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Nicole Graf
- Department of Histopathology, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Jonathan Karpelowsky
- Children's Cancer Research Unit, Kids Research, The Children's Hospital at Westmead, Westmead, New South Wales, Australia.,Paediatric Oncology and Thoracic Surgery, The Children's Hospital at Westmead, Westmead, New South Wales, Australia.,Division of Child and Adolescent Health, The University of Sydney, Sydney, New South Wales, Australia
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4
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Barone R, Gulisano M, Cannata E, Padalino S, Saia F, Maugeri N, Pettinato F, Lo Nigro L, Casabona A, Russo G, Di Cataldo A, Rizzo R. Self- and Parent-Reported Psychological Symptoms in Young Cancer Survivors and Control Peers: Results from a Clinical Center. J Clin Med 2020; 9:jcm9113444. [PMID: 33120900 PMCID: PMC7693519 DOI: 10.3390/jcm9113444] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 11/16/2022] Open
Abstract
Pediatric cancer survivors are at increased risk for psychological distress. We sought to understand the severity and symptoms' co-occurrence among pediatric survivors compared to controls by rating both self- and parent-reported symptomatology. Forty survivors (22 males; mean age at study time: 12.9 years) participated in the study. Most survivors (85%) had a diagnosis of acute lymphoblastic leukemia. Seventy-nine healthy controls with the same age and gender distribution as the patients were included. A standardized assessment of psychological functioning was conducted by self- and parent-reported symptoms evaluations. The self-reported anxious symptom severity was significantly higher in survivors. A significantly higher proportion of survivors compared to controls had clinically significant anxiety, depression, and combined anxiety symptoms (i.e., social anxiety, separation anxiety, or physical symptoms). In both study groups, the self-reported emotional and somatic symptoms were significantly associated. The multi-informant assessments of the psychological symptoms revealed distinct associations between the child- and parent-reported symptoms in the survivors' group: the survivors' self-reports of depressive symptoms, somatic symptoms, and functional impairment were significantly correlated with the parent reports of child behavioral concerns, somatic complaints, and functional impairment, respectively. Conclusion: Self-reported symptoms showed similar comorbidity profiles in survivors and control peers. The multi-informant assessments detected differences in the association of self- and parent-reported symptoms between the survivor and control groups. The present study showed that multi-informant assessment is critical to understanding symptom profiles and to informing intervention with particular regard to parental participation and support.
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Affiliation(s)
- Rita Barone
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
- Correspondence: ; Tel.: +39-095-378-2898
| | - Mariangela Gulisano
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
| | - Emanuela Cannata
- Pediatric Oncohematology Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (E.C.); (L.L.N.); (G.R.); (A.D.C.)
| | - Sara Padalino
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
| | - Federica Saia
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
| | - Nicoletta Maugeri
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
| | - Fabio Pettinato
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
| | - Luca Lo Nigro
- Pediatric Oncohematology Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (E.C.); (L.L.N.); (G.R.); (A.D.C.)
| | - Antonino Casabona
- Department of Biomedical and Biotechnological Sciences, Section of Physiology, School of Medicine, University of Catania, 95123 Catania, Italy;
| | - Giovanna Russo
- Pediatric Oncohematology Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (E.C.); (L.L.N.); (G.R.); (A.D.C.)
| | - Andrea Di Cataldo
- Pediatric Oncohematology Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (E.C.); (L.L.N.); (G.R.); (A.D.C.)
| | - Renata Rizzo
- Child Neuropsychiatry Unit, Department of Clinical and Experimental Medicine, School of Medicine, University of Catania, 95123 Catania, Italy; (M.G.); (S.P.); (F.S.); (N.M.); (F.P.); (R.R.)
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Abstract
Abdominal tumors (AT) in children account for approximately 17% of all pediatric solid tumor cases, and frequently exhibit embryonal histological features that differentiate them from adult cancers. Current molecular approaches have greatly improved the understanding of the distinctive pathology of each tumor type and enabled the characterization of novel tumor biomarkers. As seen in abdominal adult tumors, microRNAs (miRNAs) have been increasingly implicated in either the initiation or progression of childhood cancer. Moreover, besides predicting patient prognosis, they represent valuable diagnostic tools that may also assist the surveillance of tumor behavior and treatment response, as well as the identification of the primary metastatic sites. Thus, the present study was undertaken to compile up-to-date information regarding the role of dysregulated miRNAs in the most common histological variants of AT, including neuroblastoma, nephroblastoma, hepatoblastoma, hepatocarcinoma, and adrenal tumors. Additionally, the clinical implications of dysregulated miRNAs as potential diagnostic tools or indicators of prognosis were evaluated.
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6
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Zhang W, Meyfeldt J, Wang H, Kulkarni S, Lu J, Mandel JA, Marburger B, Liu Y, Gorka JE, Ranganathan S, Prochownik EV. β-Catenin mutations as determinants of hepatoblastoma phenotypes in mice. J Biol Chem 2019; 294:17524-17542. [PMID: 31597698 DOI: 10.1074/jbc.ra119.009979] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 10/03/2019] [Indexed: 12/14/2022] Open
Abstract
Hepatoblastoma (HB) is the most common pediatric liver cancer. Although long-term survival of HB is generally favorable, it depends on clinical stage, tumor histology, and a variety of biochemical and molecular features. HB appears almost exclusively before the age of 3 years, is represented by seven histological subtypes, and is usually associated with highly heterogeneous somatic mutations in the catenin β1 (CTNNB1) gene, which encodes β-catenin, a Wnt ligand-responsive transcriptional co-factor. Numerous recurring β-catenin mutations, not previously documented in HB, have also been identified in various other pediatric and adult cancer types. Little is known about the underlying factors that determine the above HB features and behaviors or whether non-HB-associated β-catenin mutations are tumorigenic when expressed in hepatocytes. Here, we investigated the oncogenic properties of 14 different HB- and non-HB-associated β-catenin mutants encoded by Sleeping Beauty vectors following their delivery into the mouse liver by hydrodynamic tail-vein injection. We show that all β-catenin mutations, as well as WT β-catenin, are tumorigenic when co-expressed with a mutant form of yes-associated protein (YAP). However, tumor growth rates, histologies, nuclear-to-cytoplasmic partitioning, and metabolic and transcriptional landscapes were strongly influenced by the identities of the β-catenin mutations. These findings provide a context for understanding at the molecular level the notable biological diversity of HB.
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Affiliation(s)
- Weiqi Zhang
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224.,Tsinghua University School of Medicine, Beijing 100084, China
| | - Jennifer Meyfeldt
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Huabo Wang
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Sucheta Kulkarni
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Jie Lu
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Jordan A Mandel
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Brady Marburger
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224.,University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224
| | - Ying Liu
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224.,University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224
| | - Joanna E Gorka
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224
| | - Sarangarajan Ranganathan
- University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224.,Department of Pathology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224.,Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213
| | - Edward V Prochownik
- Division of Hematology/Oncology, UPMC Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania 15224 .,University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15224.,Pittsburgh Liver Research Center, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213.,Department of Microbiology and Molecular Genetics, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania 15213.,Hillman Cancer Center, University of Pittsburgh, Pittsburgh, Pennsylvania 15232
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7
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Luo Z, Cao P. Long noncoding RNA PVT1 promotes hepatoblastoma cell proliferation through activating STAT3. Cancer Manag Res 2019; 11:8517-8527. [PMID: 31572006 PMCID: PMC6759231 DOI: 10.2147/cmar.s213707] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2019] [Accepted: 07/15/2019] [Indexed: 12/29/2022] Open
Abstract
Background Hepatoblastoma is the most common liver malignancy in children. The long noncoding RNA (IncRNA) PVT1 plays oncogenic roles in human cancers; however, its regulation and function in hepatoblastoma remain poorly understood. Purpose This study was designed to investigate the regulation and function of PVT1 in hepatoblastoma. Methods PVT1 expression was compared between human hepatoblastoma tissues and adjacent non-tumor tissues, and then analyzed using Kaplan-Meier method. The proliferation of hepatoblastoma cells was determined by BrdU incorporation assay. The tumor xenograft model was used to assess tumor proliferation in vivo. The gene expression level was measured by qRT-pCR, Western blot and immunohistochemistry analyses. Results Compared with normal counterparts, PVT1 is upregulated in human hepatoblastoma tissues as well as in hepatoblastoma cell lines. Additionally, PVT1 promotes the proliferation of hepatoblastoma cells in vitro and accelerates tumor growth in xenograft model in vivo. Mechanistically, PVT1 promotes the activation of the signal transducer and activator of transcription 3 (STAT3), which leads to the transcriptional activation of downstream targets involved in cell cycle progression, and moreover,STAT3 inhibition with the selective inhibitor stattic abolishes PVT1 pro-proliferative role in hepatoblastoma cells. Conclusion PVT1 promotes hepatoblastoma cell proliferation through activating STAT3-induced cell cycle progression, which may implicate PVT1 as a potential therapeutic target for hepatoblastoma treatment.
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Affiliation(s)
- Zhenqin Luo
- Oncology Department, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, People's Republic of China
| | - Peiguo Cao
- Oncology Department, The Third Xiangya Hospital of Central South University, Changsha, Hunan 410013, People's Republic of China
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8
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Hooks KB, Audoux J, Fazli H, Lesjean S, Ernault T, Dugot-Senant N, Leste-Lasserre T, Hagedorn M, Rousseau B, Danet C, Branchereau S, Brugières L, Taque S, Guettier C, Fabre M, Rullier A, Buendia MA, Commes T, Grosset CF, Raymond AA. New insights into diagnosis and therapeutic options for proliferative hepatoblastoma. Hepatology 2018; 68:89-102. [PMID: 29152775 DOI: 10.1002/hep.29672] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Revised: 10/10/2017] [Accepted: 11/15/2017] [Indexed: 12/30/2022]
Abstract
UNLABELLED Surgery and cisplatin-based treatment of hepatoblastoma (HB) currently guarantee the survival of 70%-80% of patients. However, some important challenges remain in diagnosing high-risk tumors and identifying relevant targetable pathways offering new therapeutic avenues. Previously, two molecular subclasses of HB tumors have been described, C1 and C2, with C2 being the subgroup with the poorest prognosis, a more advanced tumor stage, and the worst overall survival rate. An associated 16-gene signature to discriminate the two tumoral subgroups was proposed, but it has not been transferred into clinical routine. To address these issues, we performed RNA sequencing of 25 tumors and matched normal liver samples from patients. The transcript profiling separated HB into three distinct subgroups named C1, C2A, and C2B, identifiable by a concise four-gene signature: hydroxysteroid 17-beta dehydrogenase 6, integrin alpha 6, topoisomerase 2-alpha, and vimentin, with topoisomerase 2-alpha being characteristic for the proliferative C2A tumors. Differential expression of these genes was confirmed by quantitative RT-PCR on an expanded cohort and by immunohistochemistry. We also revealed significant overexpression of genes involved in the Fanconi anemia (FA) pathway in the C2A subgroup. We then investigated the ability of several described FA inhibitors to block growth of HB cells in vitro and in vivo. We demonstrated that bortezomib, a Food and Drug Administration-approved proteasome inhibitor, strongly impairs the proliferation and survival of HB cell lines in vitro, blocks FA pathway-associated double-strand DNA repair, and significantly impedes HB growth in vivo. CONCLUSION The highly proliferating C2A subtype is characterized by topoisomerase 2-alpha gene up-regulation and FA pathway activation, and the HB therapeutic arsenal could include bortezomib for the treatment of patients with the most aggressive tumors. (Hepatology 2018;68:89-102).
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Affiliation(s)
- Katarzyna B Hooks
- Univ. Bordeaux, Inserm, GREF, U1053.,Univ. Bordeaux, Inserm, BMGIC, U1035, Bordeaux, France
| | - Jérôme Audoux
- Institut de Médecine Régénératrice et de Biothérapie, Inserm U1183, CHU Montpellier.,Institut de Biologie Computationnelle, Université Montpellier, Montpellier, France
| | - Helena Fazli
- Univ. Bordeaux, Inserm, GREF, U1053.,Univ. Bordeaux, Inserm, BMGIC, U1035, Bordeaux, France
| | - Sarah Lesjean
- Univ. Bordeaux, Inserm, GREF, U1053.,Univ. Bordeaux, Inserm, BMGIC, U1035, Bordeaux, France
| | - Tony Ernault
- Physiopathologie et traitement des maladies du foie, Inserm, UMR1193, Hôpital Paul-Brousse, Hepatobiliary Centre.,Université Paris Saclay, Villejuif, France
| | | | | | - Martin Hagedorn
- Univ. Bordeaux, Inserm, GREF, U1053.,Univ. Bordeaux, Inserm, BMGIC, U1035, Bordeaux, France
| | | | | | | | | | | | | | | | - Anne Rullier
- Hôpital Universitaire de Bordeaux, Bordeaux, France
| | - Marie-Annick Buendia
- Physiopathologie et traitement des maladies du foie, Inserm, UMR1193, Hôpital Paul-Brousse, Hepatobiliary Centre.,Université Paris Saclay, Villejuif, France
| | - Thérèse Commes
- Institut de Médecine Régénératrice et de Biothérapie, Inserm U1183, CHU Montpellier.,Institut de Biologie Computationnelle, Université Montpellier, Montpellier, France
| | - Christophe F Grosset
- Univ. Bordeaux, Inserm, GREF, U1053.,Univ. Bordeaux, Inserm, BMGIC, U1035, Bordeaux, France
| | - Anne-Aurélie Raymond
- Univ. Bordeaux, Inserm, GREF, U1053.,Univ. Bordeaux, Inserm, BMGIC, U1035, Bordeaux, France
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9
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Kiruthiga KG, Ramakrishna B, Saha S, Sen S. Histological and immunohistochemical study of hepatoblastoma: correlation with tumour behaviour and survival. J Gastrointest Oncol 2018; 9:326-337. [PMID: 29755772 DOI: 10.21037/jgo.2018.01.08] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Hepatoblastoma (HB) has different histological subtypes, with varying prognosis. Though the survival has drastically improved, subsets of patients are not responsive to therapy. Therefore, it becomes important to determine the factors which affect the behaviour of the tumour. This study was aimed to look at the histopathological subtypes and compare with immunohistochemical (IHC) expression of CK19, beta-catenin and EpCAM and survival. Methods This study included 55 cases of HB. IHC expression of CK19, beta-catenin and EpCAM were correlated with histological subtypes, tumour behaviour, response to chemotherapy and survival. Results Most common epithelial subtype was fetal (43.2%) and mixed epithelial (54.8%) in pre- and post-chemotherapy groups respectively. Microvascular invasion (MVI) was present in 14/33 resected tumours. CK19 expression was seen in 54.2% and 72.2% of embryonal subtype, nuclear beta-catenin expression in 48.7% and 57.1% and EpCAM in 100% and 82.1% of tumours in pre- and post-chemotherapy groups, respectively. Fetal subtype had a lesser chance of MVI, recurrence, metastasis and death. Beta-catenin expression was associated with lower event free survival (EFS) and EpCAM with ≥50% viable tumour following chemotherapy (P=0.04). Age at diagnosis ≤2 years, male sex, alpha-fetoprotein <10,000 IU/mL following chemotherapy, solitary tumour (P=0.001), size ≤5 cm, pretreatment extent of disease (PRETEXT) I&II, mitosis ≤2/10 high power fields (hpf), viable tumour <50% (P=0.04) and absent nuclear expression of beta-catenin, predicted a higher EFS rate. Conclusions Beta-catenin expression is associated with lower EFS and EpCAM expression with tumour viability. Multifocality and viable tumour ≥50% were significant factors predicting lower EFS. These factors should be included in the prognostication of HBs.
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Affiliation(s)
| | | | - Soumitra Saha
- Paediatric Surgery, Christian Medical College, Vellore, India
| | - Sudipta Sen
- Paediatric Surgery, Christian Medical College, Vellore, India
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10
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A Novel Cell Line Based Orthotopic Xenograft Mouse Model That Recapitulates Human Hepatoblastoma. Sci Rep 2017; 7:17751. [PMID: 29259231 PMCID: PMC5736579 DOI: 10.1038/s41598-017-17665-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 11/29/2017] [Indexed: 12/19/2022] Open
Abstract
Currently, preclinical testing of therapies for hepatoblastoma (HB) is limited to subcutaneous and intrasplenic xenograft models that do not recapitulate the hepatic tumors seen in patients. We hypothesized that injection of HB cell lines into the livers of mice would result in liver tumors that resemble their clinical counterparts. HepG2 and Huh-6 HB cell lines were injected, and tumor growth was monitored with bioluminescence imaging (BLI) and magnetic resonance imaging (MRI). Levels of human α-fetoprotein (AFP) were monitored in the serum of animals. Immunohistochemical and gene expression analyses were also completed on xenograft tumor samples. BLI signal indicative of tumor growth was seen in 55% of HepG2- and Huh-6-injected animals after a period of four to seven weeks. Increased AFP levels correlated with tumor growth. MRI showed large intrahepatic tumors with active neovascularization. HepG2 and Huh-6 xenografts showed expression of β-catenin, AFP, and Glypican-3 (GPC3). HepG2 samples displayed a consistent gene expression profile most similar to human HB tumors. Intrahepatic injection of HB cell lines leads to liver tumors in mice with growth patterns and biologic, histologic, and genetic features similar to human HB tumors. This orthotopic xenograft mouse model will enable clinically relevant testing of novel agents for HB.
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11
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Okur MH, Yankol Y, Cimşit B, Mecit N, Ertuğrul G, Kanmaz T, Bozkurt C, Acarli K, Kalayoglu M. Liver Transplant in Children with Hepatoblastoma. EXP CLIN TRANSPLANT 2017; 17:644-647. [DOI: 10.6002/ect.2016.0110] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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12
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Katzenstein HM, Furman WL, Malogolowkin MH, Krailo MD, McCarville MB, Towbin AJ, Tiao GM, Finegold MJ, Ranganathan S, Dunn SP, Langham MR, McGahren ED, Rodriguez-Galindo C, Meyers RL. Upfront window vincristine/irinotecan treatment of high-risk hepatoblastoma: A report from the Children's Oncology Group AHEP0731 study committee. Cancer 2017; 123:2360-2367. [PMID: 28211941 DOI: 10.1002/cncr.30591] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 12/15/2016] [Accepted: 01/03/2017] [Indexed: 12/20/2022]
Abstract
BACKGROUND The identification of new therapies for high-risk (HR) hepatoblastoma is challenging. Children's Oncology Group study AHEP0731 included a HR stratum to explore the efficacy of novel agents. Herein, the authors report the response rate to the combination of vincristine (V) and irinotecan (I) and the outcome of patients with high-risk hepatoblastoma. METHODS Patients with newly diagnosed metastatic hepatoblastoma or those with a serum α-fetoprotein (AFP) level <100 ng/mL were eligible. Patients received 2 cycles of V at a dose of 1.5 mg/m2 /day intravenously on days 1 and 8 and I at a dose of 50 mg/m2 /day intravenously on days 1 to 5. Patients were defined as responders if they had either a 30% decrease in tumor burden according to Response Evaluation Criteria In Solid Tumors (RECIST) or a 90% (>1 log10 ) decline in their AFP level. Responders were to receive 2 additional cycles of VI intermixed with 6 cycles of the combination of cisplatin, doxorubicin, 5-fluorouracil, and vincristine (C5VD). Nonresponders were to receive 6 cycles of C5VD alone. RESULTS A total of 32 patients with a median age at diagnosis of 26 months (range, 11-159 months) were enrolled between September 2009 and February 2012. Fourteen of 30 evaluable patients were responders (RECIST and AFP in 6 patients, RECIST only in 3 patients, and AFP only in 5 patients). The median AFP decline after 2 cycles of VI for the entire group was 345,565 ng/mL (85% of the initial AFP). The 3-year event-free and overall survival rates were 49% (95% confidence interval, 30%-65%) and 62% (95% confidence interval, 42%-77%), respectively. CONCLUSIONS The VI combination appears to have substantial activity against HR hepatoblastoma. The ultimate impact of this regimen in improving the outcomes of children with HR hepatoblastoma remains to be determined. Cancer 2017;123:2360-2367. © 2017 American Cancer Society.
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Affiliation(s)
- Howard M Katzenstein
- Division of Pediatric Hematology/Oncology, Monroe Carell Jr. Children's Hospital at Vanderbilt University, Nashville, Tennessee
| | - Wayne L Furman
- Department of Oncology, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Marcio H Malogolowkin
- Division of Pediatric Hematology/Oncology, University of California at Davis Comprehensive Cancer Center, Sacramento, California
| | - Mark D Krailo
- Department of Preventive Medicine, University of Southern California Keck School of Medicine, Los Angeles, California
| | - M Beth McCarville
- Department of Diagnostic Imaging, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Alexander J Towbin
- Department of Radiology and Medical Imaging, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Greg M Tiao
- Division of General and Thoracic Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | | | - Sarangarajan Ranganathan
- Department of Pathology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Stephen P Dunn
- Department of Surgery, Nemours/Alfred I. duPont Hospital for Children, Wilmington, Delaware
| | - Max R Langham
- Division of Pediatric Surgery, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Eugene D McGahren
- Division of Pediatric Surgery, University of Virginia Children's Hospital, Charlottesville, Virginia
| | - Carlos Rodriguez-Galindo
- Department of Global Pediatric Medicine, St Jude Children's Research Hospital, Memphis, Tennessee
| | - Rebecka L Meyers
- Department of Pediatric Surgery, Primary Children's Medical Center, Salt Lake City, Utah
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Ranganathan S, Ningappa M, Ashokkumar C, Higgs BW, Min J, Sun Q, Schmitt L, Subramaniam S, Hakonarson H, Sindhi R. Loss of EGFR-ASAP1 signaling in metastatic and unresectable hepatoblastoma. Sci Rep 2016; 6:38347. [PMID: 27910913 PMCID: PMC5133573 DOI: 10.1038/srep38347] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 11/09/2016] [Indexed: 02/08/2023] Open
Abstract
Hepatoblastoma (HBL), the most common childhood liver cancer is cured with surgical resection after chemotherapy or with liver transplantation if local invasion and multifocality preclude resection. However, variable survival rates of 60-80% and debilitating chemotherapy sequelae argue for more informed treatment selection, which is not possible by grading the Wnt-β-catenin over activity present in most HBL tumors. A hypothesis-generating whole transcriptome analysis shows that HBL tumors removed at transplantation are enriched most for cancer signaling pathways which depend predominantly on epidermal growth factor (EGF) signaling, and to a lesser extent, on aberrant Wnt-β-catenin signaling. We therefore evaluated whether EGFR, ASAP1, ERBB2 and ERBB4, which signal downstream after ligation of EGF, and which show aberrant expression in several other invasive cancers, would also predict HBL tumor invasiveness. Immunohistochemistry of HBL tumors (n = 60), which are histologically heterogeneous, shows that compared with well-differentiated fetal cells, less differentiated embryonal and undifferentiated small cells (SCU) progressively lose EGFR and ASAP1 expression. This trend is exaggerated in unresectable, locally invasive or metastatic tumors, in which embryonal tumor cells are EGFR-negative, while SCU cells are EGFR-negative and ASAP1-negative. Loss of EGFR-ASAP1 signaling characterizes undifferentiated and invasive HBL. EGFR-expressing HBL tumors present novel therapeutic targeting opportunities.
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Affiliation(s)
- Sarangarajan Ranganathan
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Department of Pathology, Pittsburgh, PA 15224, USA
| | - Mylarappa Ningappa
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Pediatric Abdominal Transplant Surgery, Pittsburgh, PA 15224, USA
| | - Chethan Ashokkumar
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Pediatric Abdominal Transplant Surgery, Pittsburgh, PA 15224, USA
| | - Brandon W. Higgs
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Pediatric Abdominal Transplant Surgery, Pittsburgh, PA 15224, USA
| | - Jun Min
- Department of Bioengineering, University of California San Diego, LA Jolla, CA, USA
| | - Qing Sun
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Pediatric Abdominal Transplant Surgery, Pittsburgh, PA 15224, USA
| | - Lori Schmitt
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Department of Pathology, Pittsburgh, PA 15224, USA
| | - Shankar Subramaniam
- Department of Bioengineering, University of California San Diego, LA Jolla, CA, USA
| | - Hakon Hakonarson
- Center for Applied Genomics, Children’s Hospital of Philadelphia, 1216 E. Abramson’s Research Center, 34th and Civic Center Blvd., ARC 1216E, Philadelphia, PA. 19104, USA
| | - Rakesh Sindhi
- Children’s Hospital of Pittsburgh of University of Pittsburgh Medical Center, 4401 Penn Avenue, Pediatric Abdominal Transplant Surgery, Pittsburgh, PA 15224, USA
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A cross comparison of technologies for the detection of microRNAs in clinical FFPE samples of hepatoblastoma patients. Sci Rep 2015; 5:10438. [PMID: 26039282 PMCID: PMC4453922 DOI: 10.1038/srep10438] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 04/13/2015] [Indexed: 01/01/2023] Open
Abstract
Although formalin fixed paraffin embedded (FFPE) tissue is a major biological source in cancer research, it is challenging to work with due to macromolecular fragmentation and nucleic acid crosslinking. Therefore, it is important to characterise the quality of data that can be obtained from FFPE samples. We have compared three independent platforms (next generation sequencing, microarray and NanoString) for profiling microRNAs (miRNAs) using clinical FFPE samples from hepatoblastoma (HB) patients. The number of detected miRNAs ranged from 228 to 345 (median=294) using the next generation sequencing platform, whereas 79 to 125 (median=112) miRNAs were identified using microarrays in three HB samples, including technical replicates. NanoString identified 299 to 372 miRNAs in two samples. Between the platforms, we observed high reproducibility and significant levels of shared detection. However, for commonly detected miRNAs, a strong correlation between platforms was not observed. Analysis of 10 additional HB samples with NanoString identified significantly overlapping miRNA expression profiles, and an alternative pattern was identified in a poorly differentiated HB with an aggressive phenotype. This investigation serves as a roadmap for future studies investigating miRNA expression in clinical FFPE samples, and as a guideline for the selection of an appropriate platform.
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HuR represses Wnt/β-catenin-mediated transcriptional activity by promoting cytoplasmic localization of β-catenin. Biochem Biophys Res Commun 2014; 457:65-70. [PMID: 25534855 DOI: 10.1016/j.bbrc.2014.12.052] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2014] [Accepted: 12/10/2014] [Indexed: 11/20/2022]
Abstract
β-Catenin is the key transcriptional activator of canonical Wnt signaling in the nucleus; thus, nuclear accumulation of β-catenin is a critical step for expressing target genes. β-Catenin accumulates in the nucleus of cancer cells where it activates oncogenic target genes. Hu antigen R (HuR) is a RNA binding protein that regulates multiple post-transcriptional processes including RNA stability. Thus, cytoplasmic HuR protein may be involved in tumorigenesis by stabilizing oncogenic transcripts, but the molecular mechanism remains unclear. Here, we observed that Wnt/β-catenin signaling induced export of the HuR protein, whereas HuR overexpression promoted accumulation of the β-catenin protein in the cytoplasm. Thus, Wnt/β-catenin-mediated transcriptional activity in the nucleus was reduced by overexpressing HuR. These results suggest novel and uncharacterized cytoplasmic β-catenin functions related to HuR-mediated RNA metabolism in cancer cells.
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Abstract
Glypican 3 is a membrane-bound heparan sulfate proteoglycan, which has recently been identified as a marker for liver cancer and germ cell malignancies. Individuals with loss-of-function mutations for the glypican 3 gene exhibit Simpson-Golabi-Behmel syndrome, a rare X-linked overgrowth disorder. Expression of glypican 3 mRNA and protein is normally silenced in most adult organs and may reappear during malignant transformation. In the past few years, immunohistochemical and molecular characteristics of glypican 3 in hepatocellular carcinoma have been elucidated. More recently, glypican 3 has been emerging as a new diagnostic marker for germ cell tumors and especially testicular and ovarian yolk sac tumors. However, in other tumors such as renal cell carcinomas, squamous cell carcinomas, and melanomas, studies disagree on the level of glypican 3 expression. Finally, there is the controversial notion of glypican 3 as a tumor suppressor gene. In this review article, we update current knowledge on glypican 3 expression in normal and neoplastic tissues, evaluate its utility as a tumor marker in clinical practice, and explore its role as a novel oncofetal protein with clinical implications. Our focus is on the diagnostic value of glypican 3 in germ cell tumors and other neoplasms in addition to hepatocellular carcinoma. In conclusion, glypican 3 has been proven to be a useful immunohistochemical marker in distinguishing yolk sac tumors, choriocarcinomas, and Wilms tumors from other malignancies histologically mimicking these primitive tumors. Clinically, we recommend that glypican 3 be used as part of a panel of markers in subtyping testicular germ cell tumors.
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Schlachter K, Gyugos M, Halász J, Lendvai G, Baghy K, Garami M, Gyöngyösi B, Schaff Z, Kiss A. High tricellulin expression is associated with better survival in human hepatoblastoma. Histopathology 2014; 65:631-41. [PMID: 24735023 DOI: 10.1111/his.12436] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 04/11/2014] [Indexed: 12/21/2022]
Abstract
AIMS The more differentiated fetal component of hepatoblastoma (HB) is characterized by increased expression of tight junction (TJ) proteins claudin-1 and -2 when compared with embryonal component. Expression patterns of the recently identified TJ protein tricellulin and the epigenetic regulator enzyme EZH2 were investigated in epithelial subtypes of HB and related to survival. METHODS AND RESULTS Twenty-one cases of epithelial HBs subtyped as pure fetal (n = 12) and embryonal/fetal (n = 9), along with 16 non-tumorous samples from surrounding liver, were analysed by immunohistochemistry for tricellulin, β-catenin and EZH2 expression. No significant differences were revealed in overall survival between fetal and embryonal/fetal types of HBs. The fetal component, however, showed considerably increased tricellulin expression while the embryonal component displayed significantly increased nuclear EZH2 positivity, in comparison to other epithelial subtypes and non-tumorous surrounding hepatocytes. Strong nuclear β-catenin staining was notably more frequent in embryonal than in fetal types. High tricellulin expression was associated with significantly increased overall survival (P = 0.03), while elevated EZH2 expression was linked to the presence of distant metastases (P = 0.013). CONCLUSIONS Our data indicate that patients with treated HBs showing high expression of tricellulin have significantly better overall survival, independent of histological subtype. Increased nuclear expression of EZH2 was associated with the presence of distant metastases.
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Abstract
PURPOSE OF REVIEW To summarize the current standards and guidelines for the diagnosis and management of hepatoblastoma, a rare pediatric liver tumor. RECENT FINDINGS Hepatoblastoma is the most common malignant liver tumor in childhood. International collaborative efforts have led to uniform implementation of the pretreatment extent of disease (PRETEXT) staging system as a means to establish consensus classification and assess upfront resectability. Additionally, current histopathological classification, in light of more advanced molecular profiling and immunohistochemical techniques and integration of tumor biomarkers into risk stratification, is reviewed. Multimodal therapy is composed of chemotherapy and surgical intervention. Achievement of complete surgical resection plays a key role in successful treatment for hepatoblastoma. Overall, outcomes have greatly improved over the past four decades because of advances in chemotherapeutic agents and administration protocols as well as innovations of surgical approach, including the use of vascular exclusion, ultrasonic dissection techniques, and liver transplantation. Challenges remain in management of high-risk patients as well as patients with recurrent or metastatic disease. SUMMARY Eventually, a more individualized approach to treating the different types of the heterogeneous spectrum of hepatoblastoma, in terms of different chemotherapeutic protocols and timing as well as type and extent of surgery, may become the basis of successful treatment in the more complex or advanced types of hepatoblastoma.
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Gyugos M, Lendvai G, Kenessey I, Schlachter K, Halász J, Nagy P, Garami M, Jakab Z, Schaff Z, Kiss A. MicroRNA expression might predict prognosis of epithelial hepatoblastoma. Virchows Arch 2014; 464:419-27. [PMID: 24570391 DOI: 10.1007/s00428-014-1549-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/28/2013] [Accepted: 01/27/2014] [Indexed: 12/14/2022]
Abstract
Hepatoblastoma (HB) is the most common primary liver cancer in childhood. The fetal and mixed embryonal/fetal epithelial subtypes of HB differ not only in grade of differentiation but probably also in prognosis. We aimed to determine microRNA (miRNA) expression patterns of the main subtypes of epithelial HBs to reveal differences and relate them to survival. We studied 20 cases of epithelial HB, subtyped as pure fetal (n = 12) or embryonal/fetal (n = 8). Tissues were sampled according to subtype to arrive at 15 purely fetal and eight purely embryonal samples (n = 8) and 15 samples of non-tumorous surrounding liver (SL). Relative expression of miR-17-5p, miR-18a, miR-21, miR-34a, miR-96, miR-122, miR-181a, miR-195, miR-210, miR-214, miR-221, miR-222, miR-223, and miR-224 was determined by TaqMan MicroRNA Assays applying miR-140 as reference. A higher level of miR-18a (p < 0.01) was found in embryonal samples than in fetal samples. Lower miR-17-5p, miR-195, miR-210, miR-214, and higher miR-221 levels were detected in fetal samples (p < 0.02) in comparison with SL samples, whereas a lower miR-122 level was observed in embryonal samples (p < 0.003). Histological subtype did not correlate with survival; however, high miR-21, low miR-222, and low miR-224 levels proved to be independently prognostic for HB with significantly increased overall survival (p < 0.03). The fetal and embryonal components of epithelial HB, as well as SL, revealed different miRNA expression patterns. Furthermore, miR-21, miR-222, and miR-224 levels predict overall survival of HB patients regardless of epithelial subtype.
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Affiliation(s)
- Mónika Gyugos
- 2nd Department of Pathology, Semmelweis University, Üllői út 93, Budapest, 1091, Hungary
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Abstract
PURPOSE The proto-oncogene beta-catenin is linked to an abnormal activation of the Wnt/beta-catenin-pathway and shows mutations in 50-90 % of hepatoblastoma (HB). Corresponding, the recently published murine orthotopic HB model differs from the former subcutaneous model by nuclear beta-catenin distribution. As the nuclear localization of beta-catenin is considered to reflect a more aggressive tumor growth, the influence of beta-catenin inhibition on cell viability and drug-efficiency in HB cells was analyzed. METHODS Beta-catenin distribution in HB cells was analyzed by immunofluorescence. The influence of beta-catenin inhibitors Celecoxib, Etodolac, ICG001, and MET kinase inhibitor (SU11274) alone and in combination with cisplatin (CDDP) on HB cell lines (HuH6, HepT1) was evaluated by cell viability assays and BrdU incorporation. RESULTS Celecoxib and ICG001 reduced dose-dependently HB cell viability and decreased nuclear beta-catenin in cultivated HB cells. Etodolac was without influence at concentrations up to 100 μM. Combinations of Celecoxib or ICG001 with MET kinase inhibitor or CDDP resulted in additive reduction of cell viability. CONCLUSION Pharmaceutical beta-catenin inhibitors can modulate the nuclear localization of beta-catenin and reduce cell viability of HB cells in vitro. These promising effects might optimize the outcome of high-risk HB. The orthotopic HB model is a suitable basis for further in vivo studies.
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Lee CT, Zhang L, Mounajjed T, Wu TT. High mobility group AT-hook 2 is overexpressed in hepatoblastoma. Hum Pathol 2012; 44:802-10. [PMID: 23134771 DOI: 10.1016/j.humpath.2012.08.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2012] [Revised: 07/29/2012] [Accepted: 08/05/2012] [Indexed: 11/30/2022]
Abstract
Hepatoblastoma is the most frequent malignant hepatic tumor in children. Expression of high mobility group AT-hook 2, an architectural nuclear factor and marker for hepatic progenitor cells, has not been studied in detail in hepatocellular neoplasms. Immunohistochemical stains using antibodies against high mobility group AT-hook 2, β-catenin, glypican-3, p53, and Ki-67 were performed in 15 hepatoblastomas, 15 fibrolamellar hepatocellular carcinomas, 34 hepatocellular carcinomas (12, ≤30 years old; 22, >30 years old), and 22 hepatic adenomas. High mobility group AT-hook 2 was expressed in all 15 hepatoblastomas, including all fetal and embryonal components, significantly higher than in 41.7% (5/12) of hepatocellular carcinomas of 30 years or younger (P = .001) and in 9% (2/22) of hepatocellular carcinomas of older than 30 years (P < .001). Aberrant β-catenin expression was detected in 80% (12/15) of hepatoblastomas, 41.6% (5/12) of hepatocellular carcinomas of 30 years or younger, and 18.2% (4/22) of hepatocellular carcinomas of older than 30 years. All 15 fibrolamellar hepatocellular carcinomas and 22 hepatic adenomas were negative for high mobility group AT-hook 2 or β-catenin. High mobility group AT-hook 2 and β-catenin expression correlated positively (P = .017; τ = 0.522) in 34 hepatocellular carcinomas. β-Catenin and glypican-3 exhibited a distinct spatial distribution within hepatoblastomas; glypican-3 was more frequently expressed in fetal components (P = .007), whereas β-catenin tended to be more frequently expressed in embryonal components (P = .062). In conclusion, high mobility group AT-hook 2 is expressed in all hepatoblastomas and could be used as a sensitive marker in their diagnosis. High mobility group AT-hook 2 was also expressed in a subset of hepatocellular carcinomas in association with β-catenin expression; this might represent a subtype of hepatocellular carcinoma with hepatic progenitor cell differentiation.
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Affiliation(s)
- Chung-Ta Lee
- Department of Pathology, National Cheng Kung University Hospital, Tainan, Taiwan, Republic of China
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