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Michaelsen GL, da Silva LDRE, de Lima DS, Jaeger MDC, Brunetto AT, Dalmolin RJS, Sinigaglia M. A Prognostic Methylation-Driven Two-Gene Signature in Medulloblastoma. J Mol Neurosci 2024; 74:47. [PMID: 38662144 DOI: 10.1007/s12031-024-02203-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 02/21/2024] [Indexed: 04/26/2024]
Abstract
Medulloblastoma (MB) is one of the most common pediatric brain tumors and it is estimated that one-third of patients will not achieve long-term survival. Conventional prognostic parameters have limited and unreliable correlations with MB outcome, presenting a major challenge for patients' clinical improvement. Acknowledging this issue, our aim was to build a gene signature and evaluate its potential as a new prognostic model for patients with the disease. In this study, we used six datasets totaling 1679 samples including RNA gene expression and DNA methylation data from primary MB as well as control samples from healthy cerebellum. We identified methylation-driven genes (MDGs) in MB, genes whose expression is correlated with their methylation. We employed LASSO regression, incorporating the MDGs as a parameter to develop the prognostic model. Through this approach, we derived a two-gene signature (GS-2) of candidate prognostic biomarkers for MB (CEMIP and NCBP3). Using a risk score model, we confirmed the GS-2 impact on overall survival (OS) with Kaplan-Meier analysis. We evaluated its robustness and accuracy with receiver operating characteristic curves predicting OS at 1, 3, and 5 years in multiple independent datasets. The GS-2 showed highly significant results as an independent prognostic biomarker compared to traditional MB markers. The methylation-regulated GS-2 risk score model can effectively classify patients with MB into high and low-risk, reinforcing the importance of this epigenetic modification in the disease. Such genes stand out as promising prognostic biomarkers with potential application for MB treatment.
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Affiliation(s)
- Gustavo Lovatto Michaelsen
- Children's Cancer Institute, Porto Alegre, 90620-110, RS, Brazil
- Bioinformatics Multidisciplinary Environment-BioME, Digital Metropole Institute, Federal University of Rio Grande do Norte, Natal, 59076-550, RN, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, 90035-003, RS, Brazil
| | - Lívia Dos Reis Edinger da Silva
- Children's Cancer Institute, Porto Alegre, 90620-110, RS, Brazil
- Federal University of Health Sciences of Porto Alegre, Porto Alegre, 90050-170, RS, Brazil
| | - Douglas Silva de Lima
- Children's Cancer Institute, Porto Alegre, 90620-110, RS, Brazil
- Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, 90035-003, RS, Brazil
| | - Mariane da Cunha Jaeger
- Children's Cancer Institute, Porto Alegre, 90620-110, RS, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, 90035-003, RS, Brazil
| | - André Tesainer Brunetto
- Children's Cancer Institute, Porto Alegre, 90620-110, RS, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, 90035-003, RS, Brazil
| | - Rodrigo Juliani Siqueira Dalmolin
- Bioinformatics Multidisciplinary Environment-BioME, Digital Metropole Institute, Federal University of Rio Grande do Norte, Natal, 59076-550, RN, Brazil
- Department of Biochemistry, Federal University of Rio Grande do Norte, Natal, 59064-741, RN, Brazil
| | - Marialva Sinigaglia
- Children's Cancer Institute, Porto Alegre, 90620-110, RS, Brazil.
- Bioinformatics Multidisciplinary Environment-BioME, Digital Metropole Institute, Federal University of Rio Grande do Norte, Natal, 59076-550, RN, Brazil.
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, 90035-003, RS, Brazil.
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2
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Laschuk Herlinger A, Lovatto Michaelsen G, Sinigaglia M, Fratini L, Nogueira Debom G, Braganhol E, Brunetto de Farias C, Lunardi Brunetto A, Tesainer Brunetto A, da Cunha Jaeger M, Roesler R. Modulation of Viability, Proliferation, and Stemness by Rosmarinic Acid in Medulloblastoma Cells: Involvement of HDACs and EGFR. Neuromolecular Med 2023; 25:573-585. [PMID: 37740824 DOI: 10.1007/s12017-023-08758-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Accepted: 08/30/2023] [Indexed: 09/25/2023]
Abstract
Medulloblastoma (MB) is a heterogeneous group of malignant pediatric brain tumors, divided into molecular groups with distinct biological features and prognoses. Currently available therapy often results in poor long-term quality of life for patients, which will be afflicted by neurological, neuropsychiatric, and emotional sequelae. Identifying novel therapeutic agents capable of targeting the tumors without jeopardizing patients' quality of life is imperative. Rosmarinic acid (RA) is a plant-derived compound whose action against a series of diseases including cancer has been investigated, with no side effects reported so far. Previous studies have not examined whether RA has effects in MB. Here, we show RA is cytotoxic against human Daoy (IC50 = 168 μM) and D283 (IC50 = 334 μM) MB cells. Exposure to RA for 48 h reduced histone deacetylase 1 (HDAC1) expression while increasing H3K9 hyperacetylation, reduced epidermal growth factor (EGFR) expression, and inhibited EGFR downstream targets extracellular-regulated kinase (ERK)1/2 and AKT in Daoy cells. These modifications were accompanied by increased expression of CDKN1A/p21, reduced expression of SOX2, and a decrease in proliferative rate. Treatment with RA also reduced cancer stem cell markers expression and neurosphere size. Taken together, our findings indicate that RA can reduce cell proliferation and stemness and induce cell cycle arrest in MB cells. Mechanisms mediating these effects may include targeting HDAC1, EGFR, and ERK signaling, and promoting p21 expression, possibly through an increase in H3K9ac and AKT deactivation. RA should be further investigated as a potential anticancer agent in experimental MB.
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Affiliation(s)
- Alice Laschuk Herlinger
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil.
| | - Gustavo Lovatto Michaelsen
- Graduate Program in Bioinformatics, Digital Metropolis Institute, Federal University of Rio Grande do Norte, Natal, RN, 59078-400, Brazil
- Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Marialva Sinigaglia
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil
- Graduate Program in Bioinformatics, Digital Metropolis Institute, Federal University of Rio Grande do Norte, Natal, RN, 59078-400, Brazil
- Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Lívia Fratini
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
| | - Gabriela Nogueira Debom
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, 90050-170, Brazil
| | - Elizandra Braganhol
- Programa de Pós-Graduação em Biociências, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA), Porto Alegre, RS, 90050-170, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil
- Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Algemir Lunardi Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil
- Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - André Tesainer Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil
- Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Mariane da Cunha Jaeger
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil
- Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.
- National Science and Technology Institute for Children's Cancer Biology and Pediatric Oncology - INCT BioOncoPed, Porto Alegre, RS, 90035-003, Brazil.
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.
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Freire NH, Jaeger MDC, de Farias CB, Nör C, Souza BK, Gregianin L, Brunetto AT, Roesler R. Targeting the epigenome of cancer stem cells in pediatric nervous system tumors. Mol Cell Biochem 2023; 478:2241-2255. [PMID: 36637615 DOI: 10.1007/s11010-022-04655-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 12/30/2022] [Indexed: 01/14/2023]
Abstract
Medulloblastoma, neuroblastoma, and pediatric glioma account for almost 30% of all cases of pediatric cancers. Recent evidence indicates that pediatric nervous system tumors originate from stem or progenitor cells and present a subpopulation of cells with highly tumorigenic and stem cell-like features. These cancer stem cells play a role in initiation, progression, and resistance to treatment of pediatric nervous system tumors. Histone modification, DNA methylation, chromatin remodeling, and microRNA regulation display a range of regulatory activities involved in cancer origin and progression, and cellular identity, especially those associated with stem cell features, such as self-renewal and pluripotent differentiation potential. Here, we review the contribution of different epigenetic mechanisms in pediatric nervous system tumor cancer stem cells. The choice between a differentiated and undifferentiated state can be modulated by alterations in the epigenome through the regulation of stemness genes such as CD133, SOX2, and BMI1 and the activation neuronal of differentiation markers, RBFOX3, GFAP, and S100B. Additionally, we highlighted the stage of development of epigenetic drugs and the clinical benefits and efficacy of epigenetic modulators in pediatric nervous system tumors.
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Affiliation(s)
- Natália Hogetop Freire
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Graduate Program in Cellular and Molecular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500 (Setor IV - Campus do Vale), Porto Alegre, 91501-970, Brazil.
| | - Mariane da Cunha Jaeger
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Children's Cancer Institute, Porto Alegre, RS, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Children's Cancer Institute, Porto Alegre, RS, Brazil
| | - Carolina Nör
- The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ON, Canada
- Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | | | - Lauro Gregianin
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Pediatrics, School of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - André Tesainer Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Children's Cancer Institute, Porto Alegre, RS, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Graduate Program in Cellular and Molecular Biology, Center of Biotechnology, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves, 9500 (Setor IV - Campus do Vale), Porto Alegre, 91501-970, Brazil
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
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4
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Stefani RRD, Toni ECD, Farias CBD, Brunetto AT, Brunetto AL, Roesler R, Alho CS, Friedrich DC. GGAA microsatellites of NR0B1 promoter region in Ewing's sarcoma patients and healthy individuals from a south Brazilian population. Rev Bras Cancerol 2022. [DOI: 10.32635/2176-9745.rbc.2022v68n2.2350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Introduction: The very aggressive soft tissue and bone pediatric tumor Ewing’s sarcoma (ES) is caused in most cases by the chromosomal translocation t(11;22)(q24;q12), which encodes an aberrant chimeric transcription factor (EWS-FLI1) that regulates target genes, including the critical oncogene NR0B1 (Xp21.2), via GGAA microsatellites. Objective: Our objective was to analyze the GGAA microsatellites of NR0B1 promoter region of ES patients and healthy subjects in our population. Methodology: Ten male ES patients and 71 adult healthy males from Rio Grande do Sul state, Brazil, were included in this study. Leukocyte DNA was extracted, amplified by PCR, sequenced by the Sanger method and analyzed by capillary electrophoresis. Total number of GGAA motifs, length of microsatellite in base pairs, number of segments separated by "A" insertions and greatest number of consecutive GGAA motifs were analyzed. Statistical analyses were performed in the SPSS® statistical software and p-value <0,05 was considered significant. Results: A total of 21 different alleles was identified in the 81 subjects, with 24.2 allele [(GGAA)7A(GGAA)7A(GGAA)10 sequence] being the most frequent, but when comparing the data between the two groups, no significant difference was found. Conclusion: We concluded that the studied sample was highly variable in terms microsatellite structure, including the presence of rare alleles, giving us the opportunity to describe our population which is a fundamental step on identifying genetic implications in ES tumorigenesis.
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de Farias Gabriel A, Silveira FM, Curra M, Schuch LF, Wagner VP, Martins MAT, da Silveira Matte U, Siebert M, Botton MR, Brunetto AT, Gregianin LJ, Martins MD. Risk factors associated with the development of oral mucositis in pediatric oncology patients: Systematic review and meta-analysis. Oral Dis 2021; 28:1068-1084. [PMID: 33774891 DOI: 10.1111/odi.13863] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 03/02/2021] [Accepted: 03/25/2021] [Indexed: 12/16/2022]
Abstract
OBJECTIVES Oral mucositis (OM) is an acute toxicity related to cancer treatment. This systematic review aimed to identify potential risk factors associated with the development of OM in pediatric cancer patients. METHODS A search was performed in four electronic databases to identify studies that analyzed risk factors for OM in pediatric cancer patients. RESULTS Nineteen articles were included. The incidence of OM ranged from 20% to 80.4%. Chemotherapeutic agents were potential risk factors for OM in eight (42%) studies. Hematological, hepatic, and renal parameters were also considered in eight (42%) studies, while specific individual factors were reported in five (26.3%) studies. Baseline disease, oral microbiota, genetic profile, and biomarkers were reported in four (21.5%) studies each. Meta-analysis showed that groups submitted to high-risk chemotherapy for OM had a 2.79-fold increased risk of OM. CONCLUSIONS Identifying risk factors for OM is essential in order to allow individualized and early prevention treatment.
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Affiliation(s)
- Amanda de Farias Gabriel
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Felipe Martins Silveira
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Marina Curra
- Department of Oral Pathology, University of Caxias do Sul (UCS), Caxias do Sul, Porto Alegre, Brazil
| | - Lauren Frenzel Schuch
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Vivian Petersen Wagner
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Marco Antonio Trevizani Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Oral Medicine, Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Brazil
| | - Ursula da Silveira Matte
- Molecular and Protein Analysis Unit (UAMP), Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Brazil
| | - Marina Siebert
- Molecular and Protein Analysis Unit (UAMP), Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Brazil
| | - Mariana Rodrigues Botton
- Molecular and Protein Analysis Unit (UAMP), Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Brazil
| | | | - Lauro José Gregianin
- Department of Pediatric Oncology, Porto Alegre Clínicas Hospital (HCPA/UFRGS), Porto Alegre, Brazil
| | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.,Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil.,Department of Oral Medicine, Hospital de Clínicas de Porto Alegre (HCPA/UFRGS), Porto Alegre, Brazil
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Pinheiro KV, Thomaz A, Souza BK, Metcalfe VA, Freire NH, Brunetto AT, de Farias CB, Jaeger M, Bambini V, Smith CGS, Shaw L, Roesler R. Expression and pharmacological inhibition of TrkB and EGFR in glioblastoma. Mol Biol Rep 2020; 47:6817-6828. [PMID: 32862352 DOI: 10.1007/s11033-020-05739-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 08/25/2020] [Indexed: 02/08/2023]
Abstract
A member of the Trk family of neurotrophin receptors, tropomyosin receptor kinase B (TrkB, encoded by the NTRK2 gene) is an increasingly important target in various cancer types, including glioblastoma (GBM). EGFR is among the most frequently altered oncogenes in GBM, and EGFR inhibition has been tested as an experimental therapy. Functional interactions between EGFR and TrkB have been demonstrated. In the present study, we investigated the role of TrkB and EGFR, and their interactions, in GBM. Analyses of NTRK2 and EGFR gene expression from The Cancer Genome Atlas (TCGA) datasets showed an increase in NTRK2 expression in the proneural subtype of GBM, and a strong correlation between NTRK2 and EGFR expression in glioma CpG island methylator phenotype (G-CIMP+) samples. We showed that when TrkB and EGFR inhibitors were combined, the inhibitory effect on A172 human GBM cells was more pronounced than when either inhibitor was given alone. When U87MG GBM cells were xenografted into the flank of nude mice, tumor growth was delayed by treatment with TrkB and EGFR inhibitors, given alone or combined, only at specific time points. Intracranial GBM growth in mice was not significantly affected by drug treatments. Our findings indicate that correlations between NTRK2 and EGFR expression occur in specific GBM subgroups. Also, our results using cultured cells suggest for the first time the potential of combining TrkB and EGFR inhibition for the treatment of GBM.
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Affiliation(s)
- Kelly V Pinheiro
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, 500 (ICBS, Campus Centro/UFRGS), Porto Alegre, RS, 90050-170, Brazil
| | - Amanda Thomaz
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, 500 (ICBS, Campus Centro/UFRGS), Porto Alegre, RS, 90050-170, Brazil.,Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, LA 4YG, UK
| | - Bárbara Kunzler Souza
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, 500 (ICBS, Campus Centro/UFRGS), Porto Alegre, RS, 90050-170, Brazil.,Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Victoria Anne Metcalfe
- Faculty of Clinical and Biomedical Sciences, School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, Lancashire, PR1 2HE, UK
| | - Natália Hogetop Freire
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
| | - André Tesainer Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Mariane Jaeger
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Children's Cancer Institute, Porto Alegre, RS, 90620-110, Brazil
| | - Victorio Bambini
- Faculty of Clinical and Biomedical Sciences, School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, Lancashire, PR1 2HE, UK
| | - Christopher G S Smith
- Faculty of Clinical and Biomedical Sciences, School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, Lancashire, PR1 2HE, UK
| | - Lisa Shaw
- Faculty of Clinical and Biomedical Sciences, School of Pharmacy and Biomedical Sciences, University of Central Lancashire, Preston, Lancashire, PR1 2HE, UK
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil. .,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Rua Sarmento Leite, 500 (ICBS, Campus Centro/UFRGS), Porto Alegre, RS, 90050-170, Brazil.
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7
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Antunes BP, Becker RG, Brunetto AT, Pavei BS, de-Farias CB, Rivero LFDR, Santos JFC, de-Oliveira BM, Gregianin LJ, Roesler R, Brunetto AL, Pagnussato F, Galia CR. Expression of neurotrophins and their receptors in primary osteosarcoma. ACTA ACUST UNITED AC 2019; 46:e2094. [PMID: 31090865 DOI: 10.1590/0100-6991e-20192094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 02/05/2019] [Indexed: 01/22/2023]
Abstract
OBJECTIVE to determine the expression of neurotrophins and their tyrosine-kinase receptors in patients with osteosarcoma (OS) and their correlation with clinical outcomes. METHODS we applied immunohistochemistry to biopsy specimens of patients consecutively treated for primary OS at a single institution between 2002 and 2015, analyzing them for expression receptors of tyrosine kinase A and B (TrKA and TrKB), neural growth factor (NGF) and brain derived neurotrophic factor (BDNF). Independently, two pathologists classified the immunohistochemical markers as negative (negative or weak focal) or positive (moderate focal/diffuse or strong focal/diffuse). RESULTS we analyzed data from 19 patients (10 females and 9 males), with median age of 12 years (5 to 17.3). Tumors' location were 83.3% in the lower limbs, and 63.2% of patients had metastases at diagnosis. Five-year overall survival was 55.3%. BDNF was positive in 16 patients (84%) and NGF in 14 (73%). TrKA and TrKB presented positive staining in four (21,1%) and eight (42,1%) patients, respectively. Survival analysis showed no significant difference between TrK receptors and neurotrophins. CONCLUSION primary OS samples express neurotrophins and TrK receptors by immunohistochemistry. Future studies should explore their role in OS pathogenesis and determine their prognostic significance in larger cohorts.
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Affiliation(s)
- Bruno Pereira Antunes
- Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brasil.,Hospital Moinhos de Vento, Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brasil
| | - Ricardo Gehrke Becker
- Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brasil.,Instituto do Câncer Infantil (ICI), Porto Alegre, RS, Brasil
| | | | - Bruno Silveira Pavei
- Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brasil
| | | | | | | | | | - Lauro José Gregianin
- Instituto do Câncer Infantil (ICI), Porto Alegre, RS, Brasil.,Universidade Federal do Rio Grande do Sul (UFRGS), Faculdade de Medicina, Departamento de Pediatria, Porto Alegre, RS, Brasil
| | - Rafael Roesler
- Instituto do Câncer Infantil (ICI), Porto Alegre, RS, Brasil.,Hospital de Clínicas de Porto Alegre (HCPA), Centro de Pesquisa Experimental, Laboratório de Câncer e Neurobiologia, Porto Alegre, RS, Brasil.,Universidade Federal do Rio Grande do Sul (UFRGS), Departamento de Farmacologia, Porto Alegre, RS, Brasil
| | | | - Fernando Pagnussato
- Hospital de Clínicas de Porto Alegre (HCPA), Banco de Multitecidos, Porto Alegre, RS, Brasil
| | - Carlos Roberto Galia
- Hospital de Clínicas de Porto Alegre (HCPA), Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brasil.,Hospital Moinhos de Vento, Serviço de Ortopedia e Traumatologia, Porto Alegre, RS, Brasil
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Horbach L, Sinigaglia M, Da Silva CA, Olguins DB, Gregianin LJ, Brunetto AL, Brunetto AT, Roesler R, De Farias CB. Gene expression changes associated with chemotherapy resistance in Ewing sarcoma cells. Mol Clin Oncol 2018; 8:719-724. [PMID: 29844902 PMCID: PMC5958871 DOI: 10.3892/mco.2018.1608] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/13/2018] [Indexed: 12/17/2022] Open
Abstract
Ewing Sarcoma (ES) is a highly aggressive bone and soft tissue childhood cancer. The development of resistance to chemotherapy is common and remains the main cause of treatment failure. We herein evaluated the expression of genes associated with chemotherapy resistance in ES cell lines. A set of genes (CCAR1, TUBA1A, POLDIP2, SMARCA4 and SMARCB1) was data-mined for resistance against doxorubicin and vincristine, which are the standard drugs used in the treatment of patients with ES. The expression of each gene in SK-ES-1 ES cells was reported before and after exposure to a drug resistance-inducing protocol. There was a significant downregulation of CCAR1 and TUBA1A in doxorubicin-resistant cells, with low expression of TUBA1A in vincristine-resistant cells. By contrast, POLDIP2 was significantly upregulated in cells resistant to either drug, and the expression of the SMARCB1 and SMARCA4 genes was upregulated in doxorubicin-resistant cells. These findings indicate that resistance to specific chemotherapeutic agents was accompanied by differential changes in gene expression in ES tumors.
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Affiliation(s)
- Leonardo Horbach
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | | | - Camila Alves Da Silva
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - Danielly Brufatto Olguins
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | - Lauro José Gregianin
- Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil.,Department of Pediatrics, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil
| | | | - André Tesainer Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil.,Children's Cancer Institute (ICI), Porto Alegre, RS 90620-110, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS 9005-170, Brazil
| | - Caroline Brunetto De Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS 90035-003, Brazil.,Children's Cancer Institute (ICI), Porto Alegre, RS 90620-110, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS 9005-170, Brazil
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9
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Kersting N, Kunzler Souza B, Araujo Vieira I, Pereira Dos Santos R, Brufatto Olguins D, José Gregianin L, Tesainer Brunetto A, Lunardi Brunetto A, Roesler R, Brunetto de Farias C, Schwartsmann G. Epidermal Growth Factor Receptor Regulation of Ewing Sarcoma Cell Function. Oncology 2018. [PMID: 29539615 DOI: 10.1159/000487143] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE Ewing sarcoma (ES) is a type of childhood cancer probably arising from stem mesenchymal or neural crest cells. The epidermal growth factor receptor (EGFR) acts as a driver oncogene in many types of solid tumors. However, its involvement in ES remains poorly understood. METHODS Human SK-ES-1 and RD-ES ES cells were treated with EGF, the EGFR inhibitor tyrphostin (AG1478), or phosphoinositide 3-kinase (PI3K) or extracellular-regulated kinase (ERK)/mitogen-activated kinase (MAPK) inhibitors. Cell proliferation survival, cycle, and senescence were analyzed. The protein content of possible targets of EGFR manipulation was measured by Western blot. RESULTS Cell proliferation and survival were increased by EGF and inhibited by AG1478. The EGFR inhibitor also altered the cell cycle, inducing arrest in G1 and increasing the sub-G1 population, reduced polyploidy and increased the population of senescent cells. In addition, AG1478 reduced the levels of phosphorylated AKT (p-AKT), ERK, p-ERK, cyclin D1, and brain-derived neurotrophic factor (BDNF), while enhancing p53 levels. Cell proliferation was also impaired by inhibitors of PI3K or ERK, alone or combined with AG1478. CONCLUSIONS Our findings reveal novel aspects of EGFR regulation of ES cells and provide early evidence for antitumor activities of EGFR inhibitors in ES.
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Affiliation(s)
- Nathália Kersting
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil
| | - Bárbara Kunzler Souza
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil
| | - Igor Araujo Vieira
- Laboratory of Genomic Medicine, Experimental Research Center, Clinical Hospital (CPE-HCPA), Porto Alegre, Brazil
| | - Rafael Pereira Dos Santos
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Porto Alegre, Brazil
| | - Danielly Brufatto Olguins
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil
| | - Lauro José Gregianin
- Department of Pediatrics, Faculty of Medicine, Porto Alegre, Brazil.,Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | - André Tesainer Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil.,Rafael Koff Acordi Research Center, Children's Cancer Institute, Porto Alegre, Brazil
| | - Algemir Lunardi Brunetto
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil.,Rafael Koff Acordi Research Center, Children's Cancer Institute, Porto Alegre, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Porto Alegre, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil.,Rafael Koff Acordi Research Center, Children's Cancer Institute, Porto Alegre, Brazil
| | - Gilberto Schwartsmann
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE HCPA), Porto Alegre, Brazil.,Department of Internal Medicine, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
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10
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Almeida VR, Vieira IA, Buendia M, Brunetto AT, Gregianin LJ, Brunetto AL, Klamt F, de Farias CB, Abujamra AL, Lopez PLDC, Roesler R. Combined Treatments with a Retinoid Receptor Agonist and Epigenetic Modulators in Human Neuroblastoma Cells. Mol Neurobiol 2016; 54:7610-7619. [PMID: 27832522 DOI: 10.1007/s12035-016-0250-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 10/23/2016] [Indexed: 12/11/2022]
Abstract
Neuroblastoma (NB) is the most common extracranial solid childhood tumor accounting for around 15% of pediatric cancer deaths and most probably originates from a failure in the development of embryonic neural crest cells. Retinoids can inhibit the proliferation and stimulate differentiation of NB cells. In addition, epigenetic events involving changes in chromatin structure and DNA methylation can mediate the effects of retinoids; hence, the scope of this study is to investigate the use of retinoids and epigenetic drugs in NB cell lines. Here, we demonstrate that the combination of retinoid all trans-retinoic acid (ATRA) with inhibitors of either histone deacetylases (HDACs) or DNA methyltransferase is more effective in impairing the proliferation of human SH-SY5Y and SK-N-BE(2) NB cells than any drug given alone. Treatments also induced differential changes on the messenger RNA (mRNA) expression of retinoid receptor subtypes and reduced the protein content of c-Myc, the neuronal markers NeuN and β-3 tubulin, and the oncoprotein Bmi1. These results suggest that the combination of retinoids with epigenetic modulators is more effective in reducing NB growth than treatment with single drugs.
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Affiliation(s)
- Viviane Rösner Almeida
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | - Igor Araujo Vieira
- Laboratory of Genomic Medicine, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
| | - Marienela Buendia
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil
| | | | - Lauro J Gregianin
- Department of Pediatrics, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
| | | | - Fábio Klamt
- Laboratory of Cellular Biochemistry, Department of Biochemistry, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Children's Cancer Institute, Porto Alegre, RS, 90420-140, Brazil
| | - Ana Lucia Abujamra
- Graduate Program in Biotechnology, Univates University Center, Lajeado, RS, 95900-000, Brazil
| | - Patrícia Luciana da Costa Lopez
- Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil.,Graduate Program in Gastroenterology and Hepatology, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil
| | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, 90035-003, Brazil. .,Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, 90050-170, Brazil.
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11
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Portich JP, Gil MS, dos Santos RP, Goulart BK, Ferreira MBC, Loss JF, Gregianin LJ, Brunetto AL, Brunetto AT, Roesler R, de Farias CB. Low brain-derived neurotrophic factor levels are associated with active disease and poor prognosis in childhood acute leukemia. Cancer Biomark 2016; 17:347-352. [DOI: 10.3233/cbm-160646] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Júlia Plentz Portich
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Mirela Severo Gil
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Rafael Pereira dos Santos
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Children's Cancer Institute, Porto Alegre, RS, Brazil
| | | | - Maria Beatriz Cardoso Ferreira
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Jiseh Fagundes Loss
- Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Lauro José Gregianin
- Pediatric Oncology Service, Clinical Hospital, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Pediatrics, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | | | | | - Rafael Roesler
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Department of Pharmacology, Institute for Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Caroline Brunetto de Farias
- Cancer and Neurobiology Laboratory, Experimental Research Center, Clinical Hospital (CPE-HCPA), Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil
- Children's Cancer Institute, Porto Alegre, RS, Brazil
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12
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Brunetto AT, Sarker D, Papadatos-Pastos D, Fehrmann R, Kaye SB, Johnston S, Allen M, De Bono JS, Swanton C. A retrospective analysis of clinical outcome of patients with chemo-refractory metastatic breast cancer treated in a single institution phase I unit. Br J Cancer 2010; 103:607-12. [PMID: 20664586 PMCID: PMC2938255 DOI: 10.1038/sj.bjc.6605812] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 06/24/2010] [Accepted: 06/25/2010] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND AND METHODS Novel approaches to treat chemo-refractory metastatic breast cancer (MBC) are currently under investigation. This retrospective series reviews the outcome of 70 MBC patients who have participated in 30 phase I trials at the Royal Marsden Hospital from 2002 to 2009. RESULTS The median treatment lines before phase I trial entry for MBC was 5 (range: 1-12 lines). The overall response rate was 11.4% (95% CI: 4.0-18.9%) and the clinical benefit rate at 4 months was 20% (95% CI: 10.6-29.3). The median time to progression was 7.0 weeks (95% CI: 6.4-7.5) and median overall survival was 8.7 months (95% CI: 7.6-9.8) from start of first phase I treatment. No patients discontinued trial because of treatment-related toxicities. Abnormal lactate dehydrogenase, serum albumin <35 mg per 100 ml, >or=5 previous treatment lines, liver metastases and Eastern Cooperative Group performance status >or=2 at study entry were significantly associated with poor overall survival in multivariate analysis. CONCLUSION This retrospective analysis provides evidence that patients with MBC tolerate phase I clinical trials and a significant proportion of patients with chemo-refractory disease, particularly those with triple-negative or Her2-positive breast cancer, may benefit from treatment.
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Affiliation(s)
- A T Brunetto
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - D Sarker
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - D Papadatos-Pastos
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - R Fehrmann
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - S B Kaye
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - S Johnston
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - M Allen
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - J S De Bono
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
| | - C Swanton
- The Royal Marsden Hospital Drug Development and Breast Units and Institute of Cancer Research, Sutton, UK
- Translational Cancer Therapeutics Laboratory, Cancer Research UK, London Research Institute, UK
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