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Martins JMES, Braga BL, Sampaio KNF, de Souza Garcia T, Van de Sande Lee J, Cechinel E, Simoni G, Nascimento ML, da Silva PCA, Fragoso MCV, Bachega TAAS, Nishi MY, Mendonca BB. Beckwith-Wiedemann syndrome mimicking the classical form of congenital adrenal hyperplasia in newborn screening. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2024; 68:e220395. [PMID: 38427811 PMCID: PMC10948032 DOI: 10.20945/2359-4292-2022-0395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 06/24/2023] [Indexed: 03/03/2024]
Abstract
Beckwith-Wiedemann syndrome (BWS) is a common genetic congenital disease characterized by somatic overgrowth and its broad clinical spectrum includes pre- and post-natal macrosomia, macroglossia, visceromegaly, increased risk of neonatal hypoglycemia, and development of embryonic tumors. BWS occurs due to genetic/epigenetic changes involving growth-regulating genes, located on region 11p15, with an important genotype-phenotype correlation. Congenital adrenal hyperplasia (CAH) comprises a spectrum of autosomal recessive diseases presenting a variety of clinical manifestations due to a deficiency in one of the enzymes involved in cortisol secretion. Early diagnosis based on newborn screening prevents the adrenal crisis and early infant death. However, high 17-hydroxyprogesterone (17-OHP) levels can occur in newborns or premature infants without CAH, in situations of stress due to maternal or neonatal factors. Here, we report new cases of false-positive diagnosis of 21-hydroxylase deficiency during newborn screening - two girls and one boy with BWS. Methylation-specific multiplex ligation-dependent probe amplification revealed a gain of methylation in the H19 differentially methylated region. Notably, all three cases showed a complete normalization of biochemical changes, highlighting the transient nature of these hormonal findings that imitate the classical form of CAH. This report sheds light on a new cause of false-positive 21-hydroxylase deficiency diagnosis during newborn screening: Beckwith-Wiedemann syndrome.
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Affiliation(s)
| | - Barbara Leitao Braga
- Departamento de Endocrinologia do Desenvolvimento, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil,
| | - Klevia Nunes Feitosa Sampaio
- Departamento de Endocrinologia do Desenvolvimento, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
| | | | | | - Edson Cechinel
- Hospital Infantil Joana de Gusmão, Florianópolis, SC, Brasil
| | - Genoir Simoni
- Hospital Infantil Joana de Gusmão, Florianópolis, SC, Brasil
| | | | | | - Maria C V Fragoso
- Departamento de Endocrinologia do Desenvolvimento, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
| | - Tania A A S Bachega
- Departamento de Endocrinologia do Desenvolvimento, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
| | - Mirian Y Nishi
- Departamento de Endocrinologia do Desenvolvimento, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
| | - Berenice B Mendonca
- Departamento de Endocrinologia do Desenvolvimento, Hospital das Clínicas, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brasil
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Bueno AC, More CB, Marrero-Gutiérrez J, de Almeida E Silva DC, Leal LF, Montaldi AP, Ramalho FS, Vêncio RZN, de Castro M, Antonini SRR. Vitamin D receptor activation is a feasible therapeutic target to impair adrenocortical tumorigenesis. Mol Cell Endocrinol 2022; 558:111757. [PMID: 36049598 DOI: 10.1016/j.mce.2022.111757] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 08/09/2022] [Accepted: 08/16/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To evaluate the therapeutic potential of vitamin D receptor (VDR) signaling in adrenocortical carcinoma (ACC) cells. METHODS We evaluated VDR's methylation pattern in H295R ACC cells, and investigated the effects of calcitriol and seocalcitol treatments on adrenocortical tumorigenesis. RESULTS VDR was hypermethylated and underexpressed in basal H295R cells. Treatments with calcitriol and seocalcitol restored VDR signaling, resulted in antiproliferative effects, and impaired Wnt/B-catenin signaling. RNAseq of treated cells demonstrated VDR activation on steroid hormones biosynthesis and Rap1 signaling, among others. In vivo, seocalcitol constrained the growth of H295R xenografts and reduced autonomous tumor steroid secretion without hypercalcemia-associated side effects. CONCLUSIONS H295R cells present VDR hypermethylation, which can be responsible for its underexpression and signaling inactivation under basal conditions. VDR signaling promoted antiproliferative effects in vitro and in vivo, suggesting that it may be a potential therapeutic target for ACC and a valuable tool for patient's clinical management.
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Affiliation(s)
- Ana Carolina Bueno
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Candy Bellido More
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Junier Marrero-Gutiérrez
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Danillo C de Almeida E Silva
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Leticia Ferro Leal
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Ana Paula Montaldi
- Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of São Paulo, Ribeirao Preto, SP, Brazil
| | - Fernando Silva Ramalho
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Ricardo Zorzetto Nicoliello Vêncio
- Department of Computation and Mathematics, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of São Paulo, Ribeirao Preto, SP, Brazil
| | - Margaret de Castro
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil
| | - Sonir Roberto R Antonini
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, SP, Brazil.
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Bueno AC, Stecchini MF, Marrero-Gutiérrez J, More CB, Leal LF, Gomes DC, de Lima Neto DF, Brandalise SR, Cardinalli IA, Yunes JA, Junqueira T, Scrideli CA, Molina CAF, Ramalho FS, Tucci S, Coeli-Lacchini FB, Moreira AC, Ramalho L, Vêncio RZN, De Castro M, Antonini SRR. Vitamin D receptor hypermethylation as a biomarker for pediatric adrenocortical tumors. Eur J Endocrinol 2022; 186:573-585. [PMID: 35290212 DOI: 10.1530/eje-21-0879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 03/14/2022] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Pediatric adrenocortical tumors (pACT) display complex genomic backgrounds, lacking robust prognostic markers and targeted therapeutic options. Vitamin D3 receptor (VDR) promoter hypermethylation and underexpression were reported in adrenocortical carcinomas from adult patients. In this study, we aimed to investigate VDR expression levels and methylation status in pACT and their clinical and prognostic significance. DESIGN Retrospective cross-sectional study enrolling pediatric patients with ACT from two tertiary referral institutions. METHODS We evaluated clinicopathological features, VDR mRNA (qPCR) and protein (immunohistochemistry) expression, and VDR-wide methylation of ACT samples from 108 pediatric patients. Fourteen pediatric and 32 fetal and postnatal normal adrenals were used as controls. RESULTS Unlike in pre- and post-natal normal adrenals, most pACT lacked nuclear VDR expression and had reduced mRNA levels, especially the carcinomas. Unsupervised analysis of VDR methylation data revealed two groups of pACT with distinct disease features and outcomes. Tumors with high VDR methylation presented lower mRNA levels, and the respective patients presented advanced disease and reduced disease-free and overall survival. CONCLUSIONS VDR has a role in normal adrenocortical development and homeostasis, which is impaired during tumorigenesis. VDR hypermethylation and underexpression may be both predictive and prognostic biomarkers for pACT.
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Affiliation(s)
- Ana Carolina Bueno
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Mônica F Stecchini
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Junier Marrero-Gutiérrez
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Candy Bellido More
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Leticia Ferro Leal
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | | | - Daniel Ferreira de Lima Neto
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | | | | | - José Andres Yunes
- Boldrini Children's Center, State University of Campinas, Campinas, Sao Paulo, Brazil
| | - Thais Junqueira
- Boldrini Children's Center, State University of Campinas, Campinas, Sao Paulo, Brazil
| | - Carlos Alberto Scrideli
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Carlos Augusto Fernandes Molina
- Department of Surgery and Anatomy, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Fernando Silva Ramalho
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Silvio Tucci
- Department of Surgery and Anatomy, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | | | - Ayrton Custodio Moreira
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Leandra Ramalho
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Ricardo Zorzetto Nicoliello Vêncio
- Department of Computation and Mathematics, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Margaret De Castro
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Sonir Roberto R Antonini
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
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Mattone MC, Gil S, Costanzo M, Galluzzo Mutti ML, Casanovas A, Zaidman V, Lazzati JM, Ciaccio M, Belgorosky A, Guercio G. Pediatric adrenocortical tumors cohort characteristics and long-term follow-up at a single Argentinian tertiary center. J Pediatr Endocrinol Metab 2022; 35:19-27. [PMID: 34674406 DOI: 10.1515/jpem-2021-0392] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 10/04/2021] [Indexed: 12/25/2022]
Abstract
UNLABELLED Pediatric adrenocortical tumors are rare and heterogeneous endocrine malignancies. OBJECTIVES To report clinical, biochemical, and histological features, staging, and therapeutic interventions in a cohort of 28 patients treated at a single tertiary center. METHODS A retrospective review of medical records of children with PACT (diagnosed before <18 years of age) followed between 1987-2018 at Hospital de Pediatría Garrahan, Buenos Aires, Argentina. RESULTS Mean age at diagnosis was 4.6 years (range, 0.3-17.3 years) and median follow-up was 4.17 years (range, 0-12 years). Female to male ratio was 2.5:1. Signs and symptoms that prompted medical intervention were hormonal overproduction (57%), abdominal complaints (36%), and hypertensive encephalopathy (7%). In patients with clinically virilizing tumors (n=16) mean height standard deviation score (SDS) and bone age advance were significantly higher while body mass index (BMI) SDS was significantly lower than in those with clinical Cushing's (n=10) (p<0.05). Serum dehydroepiandrosterone sulfate (DHEAS) levels were significantly higher in stage IV than in stage I (p=0.03). Total adrenalectomy was performed in 26 patients. Eight patients (stage III-IV) received adjuvant chemotherapy. Five-year overall and disease-free survival were 100% for ST I-II, and 51% (95% CI 21-82) and 33% (95% CI 1.2-65) for ST III-IV, respectively (p=0.002). No statistical difference was found when comparing 2-year parameters with and without adjuvant chemotherapy. CONCLUSIONS Height SDS and BMI SDS seem to mirror hormonal secretion in pediatric adrenocortical tumors. Higher DHEAS levels were found in patients with more advanced disease. Further large-scale studies are needed to validate a possible role for DHEAS as a biochemical marker of tumor stage and to draw robust conclusions on the use of adjuvant chemotherapy.
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Affiliation(s)
- María Celeste Mattone
- Hospital de Pediatría Garrahan, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Silvia Gil
- Hospital de Pediatría Garrahan, Buenos Aires, Argentina
| | | | | | - Alejandra Casanovas
- Hospital de Pediatría Garrahan, Buenos Aires, Argentina
- Instituto Nacional del Cáncer, Buenos Aires, Argentina
| | | | | | - Marta Ciaccio
- Hospital de Pediatría Garrahan, Buenos Aires, Argentina
| | - Alicia Belgorosky
- Hospital de Pediatría Garrahan, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
| | - Gabriela Guercio
- Hospital de Pediatría Garrahan, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina
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Stecchini MF, Braid Z, More CB, Aragon DC, Castro M, Moreira AC, Antonini SR. Gonadotropin-dependent pubertal disorders are common in patients with virilizing adrenocortical tumors in childhood. Endocr Connect 2019; 8:579-589. [PMID: 30959478 PMCID: PMC6499918 DOI: 10.1530/ec-19-0141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 04/04/2019] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To investigate the impact of early exposure to androgen excess on gonadotropin-dependent puberty (GDP) and final height (FH) of patients with androgen-secreting adrenocortical tumors (ACT) in childhood. METHODS Retrospective cohort study. Occurrence of GDP and achievement of FH were evaluated. Central precocious puberty (CPP) and early fast puberty (EFP) were considered pubertal disorders. Patients with normal puberty and pubertal disorders were compared. RESULTS The study included 63 patients (44F), followed in a single institution from 1975 until 2017. At diagnosis of ACT, median age was 25.8 months; duration of signs, 6 months; stature SDS, 0.5 (-3.6 to 3.9) and bone age advancement, 14.7 months (-27.9 to 85.4). To date, 37 patients developed GDP: 26 had normal puberty; one, precocious thelarche; seven, CPP and three, EFP. GnRHa effectively treated CPP/EFP. Tall stature and older age at diagnosis of ACT were associated with risk of CPP alone (RR 4.17 (95% CI 1.17-14.80)) and CPP/EFP (RR 3.0 (95% CI 1.04-8.65)). Recurrence/metastasis during follow-up were associated with risk of CPP alone (RR 4.17 (95% CI 1.17-14.80)) and CPP/EFP (RR 3.0 (95% CI 1.12-8.02)). Among the 19 patients that reached FH, stature SDS dropped from 1.4 to -0.02 since diagnosis of ACT (P = 0.01). Seventeen achieved normal FH. There was no difference in FH SDS between patients with normal puberty and pubertal disorders (P = 0.75). CONCLUSIONS Gonadotropin-dependent pubertal disorders are common in patients with androgen-secreting ACT in childhood. FH is usually not impaired. The study reinforces the importance of close follow-up after surgery to identify and treat consequences of early exposure to androgen excess.
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Affiliation(s)
- Monica F Stecchini
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Zilda Braid
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Candy B More
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Davi C Aragon
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Margaret Castro
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Ayrton C Moreira
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Sonir R Antonini
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
- Correspondence should be addressed to S R Antonini:
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The aurora kinase inhibitor AMG 900 increases apoptosis and induces chemosensitivity to anticancer drugs in the NCI-H295 adrenocortical carcinoma cell line. Anticancer Drugs 2017; 28:634-644. [PMID: 28410270 DOI: 10.1097/cad.0000000000000504] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Adrenocortical tumor (ACT) is a malignancy with a low incidence rate and the current therapy for advanced disease has a limited impact on overall patient survival. A previous study from our group suggested that elevated expression of aurora-A and aurora-B is associated with poor outcome in childhood ACT. Similar results were also reported for adult ACTs. The present in-vitro study shows that AMG 900 inhibits aurora kinases in adrenocortical carcinoma cells. AMG 900 inhibited cell proliferation in NCI-H295 cells as well as in the ACT primary cultures and caused apoptosis in the cell line NCI-H295. Furthermore, it potentialized the mitotane, doxorubicin, and etoposide effects on apoptosis induction and acted synergistically with mitotane and doxorubicin in the inhibition of proliferation. In addition, we found that AMG 900 activated Notch signaling and rendered the cells sensitive to the combination of AMG 900 and Notch signaling inhibition. Altogether, these data show that aurora kinases inhibition using AMG 900 may be an adjuvant therapy to treat patients with invasive or recurrent adrenocortical carcinomas.
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Abduch RH, Bueno AC, Leal LF, Cavalcanti MM, Gomes DC, Brandalise SR, Masterallo MJ, Yunes JA, Martinelli CE, Tone LG, Tucci S, Molina CA, Ramalho FS, Moreira AC, Cardinalli IA, Scrideli CA, Ramalho LN, de Castro M, Antonini SR. Unraveling the expression of the oncogene YAP1, a Wnt/beta-catenin target, in adrenocortical tumors and its association with poor outcome in pediatric patients. Oncotarget 2016; 7:84634-84644. [PMID: 27705928 PMCID: PMC5356687 DOI: 10.18632/oncotarget.12382] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 09/12/2016] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Overexpression of the oncogene yes-associated-protein-1 (YAP1) is associated with increased cell proliferation in human cancers. YAP1 is a potential target of the Wnt/beta-catenin pathway, which plays an important role in adrenocortical tumors (ACT). The role of YAP1 in adrenocortical tumorigenesis has not been assessed. AIMS To evaluate YAP1 expression in normal adrenals and pediatric ACT and its association with disease outcome. To investigate the interaction between YAP1 and the Wnt/beta-catenin pathway in adrenocortical cells. RESULTS Strong YAP1 staining was present in fetal adrenals and pediatric ACT but weak in postnatal adrenals. In pediatric ACT, YAP1 mRNA overexpression was associated with death, recurrent/metastatic disease and lower overall survival. The inhibition of the Wnt/beta-catenin pathway increased YAP1 mRNA expression. siYAP1 increased CTNNB1/beta-catenin expression and nuclear staining regardless of DLV2, moreover, it decreased cell growth and impaired cell migration. MATERIALS AND METHODS We assessed in 42 pediatric ACT samples the YAP1 protein expression by immunohistochemistry and mRNA expression by RT-qPCR and analyzed their association with outcome. As controls, we resort 32 fetal and postnatal normal adrenals for IHC and 10 normal adrenal cortices for RT-qPCR. The interaction between YAP1 and the Wnt/beta-catenin pathway was assessed in NCI-H295 adrenocortical cells by inhibiting the TCF/beta-catenin complex and by knocking down YAP1. CONCLUSION YAP1 overexpression is a marker of poor prognosis for pediatric patients with ACT. In adrenocortical cells, there is a close crosstalk between YAP1 and Wnt/beta-catenin. These data open the possibility of future molecular therapies targeting Hippo/YAP1 signaling to treat advanced ACT.
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Affiliation(s)
- Rafael H. Abduch
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Ana Carolina Bueno
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Leticia F. Leal
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos, SP, Brazil
| | - Marcelo M. Cavalcanti
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | | | | | | | | | - Carlos E. Martinelli
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Luiz G. Tone
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Silvio Tucci
- Department of Surgery, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Carlos A.F. Molina
- Department of Surgery, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Fernando S. Ramalho
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Ayrton C. Moreira
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | | | - Carlos A. Scrideli
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Leandra N.Z. Ramalho
- Department of Pathology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Margaret de Castro
- Department of Internal Medicine, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
| | - Sonir R. Antonini
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Brazil
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