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Noronha EP, Ferreira PMS, Andrade FG, Blunck CB, Camargo R, Gimba ERP, Pombo-de-Oliveira MS, Terra-Granado E. Multiparametric flow cytometry directing the evaluation of CRLF2 rearrangements and JAK2 status in pediatric B cell precursor acute lymphoblastic leukemia. Hematol Transfus Cell Ther 2022:S2531-1379(22)00098-0. [DOI: 10.1016/j.htct.2022.06.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Revised: 06/13/2022] [Accepted: 06/24/2022] [Indexed: 11/16/2022] Open
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Andrade FG, Feliciano SVM, Sardou-Cezar I, Brisson GD, Dos Santos-Bueno FV, Vianna DT, Marques LVC, Terra-Granado E, Zalcberg I, Santos MDO, Costa JT, Noronha EP, Thuler LCS, Wiemels JL, Pombo-de-Oliveira MS. Pediatric Acute Promyelocytic Leukemia: Epidemiology, Molecular Features, and Importance of GST-Theta 1 in Chemotherapy Response and Outcome. Front Oncol 2021; 11:642744. [PMID: 33816294 PMCID: PMC8017304 DOI: 10.3389/fonc.2021.642744] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/08/2021] [Indexed: 11/23/2022] Open
Abstract
Previous studies have suggested a variation in the incidence of acute promyelocytic leukemia (APL) among the geographic regions with relatively higher percentages in the Latin American population. We aimed to explore the population burden of pediatric APL, gathering information from the population-based cancer registry (PBCR) and the diagnosis of APL obtained through incident cases from a hospital-based cohort. The homozygous deletion in glutathione S-transferases (GSTs) leads to a loss of enzyme detoxification activity, possibly affecting the treatment response. Mutations in the RAS pathway genes are also considered to be a key component of the disease both in the pathogenesis and in the outcomes. We have assessed mutations in a RAS–MAP kinase pathway (FLT3, PTPN11, and K-/NRAS) and GST variant predisposition risk in the outcome. Out of the 805 children and adolescents with acute myeloid leukemia (AML) who are registered in the PBCR, 35 (4.3%) were APL cases. The age-adjusted incidence rate (AAIR) was 0.03 per 100,000 person-years. One-hundred and sixty-three patients with APL were studied out of 931 AML cases (17.5%) from a hospital-based cohort. Mutations in FLT3, KRAS, and NRAS accounted for 52.1% of the cases. Patients with APL presented a 5-year probability of the overall survival (OS) of 67.3 ± 5.8%. A GST-theta 1 (GSTT1) null genotype conferred adverse prognosis, with an estimated hazard ratio of 2.8, 95% confidence interval (CI) 1.2–6.9. We speculate that the GSTT1 polymorphism is associated with therapeutics and would allow better OS of patients with APL with a GSTT1 null genotype.
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Affiliation(s)
- Francianne G Andrade
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Suellen V M Feliciano
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Ingrid Sardou-Cezar
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Gisele D Brisson
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Filipe V Dos Santos-Bueno
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Danielle T Vianna
- Laboratory of Molecular Biology, Bone Marrow Transplantation Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Luísa V C Marques
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Eugênia Terra-Granado
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Ilana Zalcberg
- Laboratory of Molecular Biology, Bone Marrow Transplantation Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Marceli de O Santos
- Surveillance and Prevention, Instituto Nacional de Cancer, Rio de Janeiro, Brazil
| | - Juliana T Costa
- Department of Pediatric Hematology-Oncology, Hospital Martagão Gesteira, Salvador, Brazil
| | - Elda P Noronha
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Luiz C S Thuler
- Clinical Research Department, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Joseph L Wiemels
- Center for Genetic Epidemiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, United States
| | - Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
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Noronha EP, Marques LVC, Andrade FG, Thuler LCS, Terra-Granado E, Pombo-de-Oliveira MS. Corrigendum: The Profile of Immunophenotype and Genotype Aberrations in Subsets of Pediatric T-Cell Acute Lymphoblastic Leukemia. Front Oncol 2021; 10:640629. [PMID: 33614512 PMCID: PMC7893417 DOI: 10.3389/fonc.2020.640629] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 12/15/2020] [Indexed: 11/13/2022] Open
Abstract
[This corrects the article .].
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Affiliation(s)
- Elda Pereira Noronha
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Luísa Vieira Codeço Marques
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Francianne Gomes Andrade
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | | | - Eugênia Terra-Granado
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
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Dos Santos-Bueno FV, Andrade FG, Sardou-Cezar I, Mendes-de-Almeida DP, Chung-Filho AA, Brisson GD, Terra-Granado E, Noronha EP, Santos Thuler LC, Pombo-de-Oliveira MS. Childhood Myeloid Neoplasms With PTPN11 Mutations in Brazil. Clin Lymphoma Myeloma Leuk 2020; 20:e496-e505. [PMID: 32434682 DOI: 10.1016/j.clml.2020.04.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/13/2020] [Accepted: 04/14/2020] [Indexed: 11/28/2022]
Affiliation(s)
| | - Francianne Gomes Andrade
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Ingrid Sardou-Cezar
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Daniela Palheiro Mendes-de-Almeida
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil; Division of Hematology, Instituto Nacional de Infectologia Evandro Chagas, Fundação Oswaldo Cruz (INI/Fiocruz), Rio de Janeiro, Brazil
| | - Alython Araujo Chung-Filho
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Gisele Dallapicola Brisson
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Eugênia Terra-Granado
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | - Elda Pereira Noronha
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil
| | | | - Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rio de Janeiro, Brazil.
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Blunck CB, Terra-Granado E, Noronha EP, Wajnberg G, Passetti F, Pombo-de-Oliveira MS, Emerenciano M. CD9 predicts ETV6-RUNX1 in childhood B-cell precursor acute lymphoblastic leukemia. Hematol Transfus Cell Ther 2019; 41:205-211. [PMID: 31085145 PMCID: PMC6732401 DOI: 10.1016/j.htct.2018.11.007] [Citation(s) in RCA: 5] [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: 09/18/2018] [Revised: 11/07/2018] [Accepted: 11/21/2018] [Indexed: 11/25/2022] Open
Abstract
INTRODUCTION The ETV6-RUNX1 is a fusion gene associated with a good outcome in B-cell precursor lymphoblastic leukemia. OBJECTIVE This study aimed to re-evaluate the CD9 cellular expression by flow cytometry (FC) as a possible tool to predict the presence of ETV6-RUNX1. METHOD Childhood B-cell precursor lymphoblastic leukemia cases were included (n=186). The percentage of CD9-labeled cells and the median fluorescence intensity ratio were used for correlation with the molecular tests. Receiver Operating Characteristic curves were performed to determine the likelihood of the CD9 expression predicting ETV6-RUNX1. RESULTS The ETV6-RUNX1 was found in 44/186 (23.6%) cases. Data analysis revealed that the best cutoff for CD9 percentage was 64%, with an accuracy of 0.84, whereas the best cutoff for CD9 median fluorescence intensity ratio was 12.52, with an accuracy of 0.80. A strong association was observed between the level of CD9 expression and the presence of ETV6-RUNX1. CONCLUSION These data confirm that the CD9 expression could be used for risk stratification in clinical practice.
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Affiliation(s)
| | | | - Elda P Noronha
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, RJ, Brazil
| | - Gabriel Wajnberg
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, RJ, Brazil; Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil; Atlantic Cancer Research Institute, Moncton, Canada
| | - Fábio Passetti
- Instituto Nacional de Câncer (INCA), Rio de Janeiro, RJ, Brazil; Fundação Oswaldo Cruz (Fiocruz), Rio de Janeiro, RJ, Brazil
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Noronha EP, Marques LVC, Andrade FG, Sardou-Cezar I, dos Santos-Bueno FV, Zampier CDP, Terra-Granado E, Pombo-de-Oliveira MS. T-lymphoid/myeloid mixed phenotype acute leukemia and early T-cell precursor lymphoblastic leukemia similarities with NOTCH1 mutation as a good prognostic factor. Cancer Manag Res 2019; 11:3933-3943. [PMID: 31118806 PMCID: PMC6504706 DOI: 10.2147/cmar.s196574] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 12/01/2018] [Accepted: 03/06/2019] [Indexed: 01/15/2023] Open
Abstract
Purpose: T-lymphoid/Myeloid Mixed phenotype acute leukemia (T/M-MPAL) is ambiguous leukemia which overlaps with early T-cell precursor lymphoblastic leukemia (ETP-ALL). We have revisited the immunophenotyping profile of T/M-MPAL and ETP-ALL to identify differences and/or similarities, as these entities represent a therapeutic challenge in clinical practice. Patients and methods: A total of 26 ETP-ALL and 10 T/M-MPAL cases were identified among 857 cases of childhood leukemia (T-ALL, n=266 and AML, n=591) before any treatment decisions. The variables analyzed were age strata, sex, clinical features, immunophenotyping, and molecular aberrations. Immunophenotyping was performed in all samples using a panel of cytoplasm and membrane antibodies to identify the lineage and blast differentiation. The mutational status of STIL-TAL1, TLX3, RUNX1, NOTCH1, FBXW7, FLT3, IL7R, RAS, KTM2A, and CDKN2A/B was tested using RT-PCR, FISH, and PCR sequencing methods. The outcomes were assessed in terms of overall survival (OS). Results: The immunophenotypes were similar in ETP-ALL and T/M-MPAL, regarding the cellular expression of CD34, CD117, CD13/CD33, and CD11b, although CD2 and HLA-DR were more frequent in T/M-MPAL (p<0.01). aMPO positivity and myelomonocyte differentiation were definitive in separating both entities. NOTCH1, FLT3-ITD, and N/KRAS mutations as well as TLX3 and KMT2A rearrangements were found in both ETP-ALL and T/M-MPAL. Thirty-one patients received ALL protocol whereas five had AML therapy. The overall 5-year survival rate (pOS) was 56.4% for patients treated using ALL protocols. No differences were observed between T/M-MPAL (pOS of 57%) and ETP-ALL (pOS of 56%) patients. The prognostic value of NOTCH1mut was associated with significantly better OS (pOS 90%) than NOTCH1 wt (pOS 37%) (p=0.017). Conclusion: This research can potentially contribute to NOTCH1 as targeted therapy and prognostic assessment of T-cell mixed phenotype leukemia.
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Affiliation(s)
- Elda Pereira Noronha
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Luísa Vieira Codeço Marques
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Francianne Gomes Andrade
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Ingrid Sardou-Cezar
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | | | - Carolina Da Paz Zampier
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Eugênia Terra-Granado
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
| | - Maria S Pombo-de-Oliveira
- Paediatric Haematology-Oncology Program, Research Centre, Instituto Nacional de Câncer, Rio de Janeiro, RJ, Brazil
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Noronha EP, Marques LVC, Andrade FG, Thuler LCS, Terra-Granado E, Pombo-de-Oliveira MS. The Profile of Immunophenotype and Genotype Aberrations in Subsets of Pediatric T-Cell Acute Lymphoblastic Leukemia. Front Oncol 2019; 9:316. [PMID: 31338319 PMCID: PMC6503680 DOI: 10.3389/fonc.2019.00316] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [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: 01/29/2019] [Accepted: 04/08/2019] [Indexed: 12/20/2022] Open
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is a biologically heterogeneous malignancy, which reflects distinctive stages of T-cell differentiation arrest. We have revisited a cohort of pediatric T-ALL, in order to test if immunophenotypes associated with molecular alterations would predict the patient's outcome. Genetic mutations, translocations and copy number alterations were identified through Sanger sequencing, RT-PCR, FISH and multiplex ligation-dependent probe amplification (MLPA). We defined 8 immunophenotypic T-ALL subtypes through multiparametric flow cytometry: early T-cell precursor (ETP, n = 27), immature (n = 38), early cortical (n = 15), cortical (n = 50), late cortical (n = 53), CD4/CD8 double negative mature (n = 31), double positive mature (n = 35) and simple positive mature (n = 31) T-ALL. Deletions (del) or amplifications (amp) in at least one gene were observed in 87% of cases. The most frequent gene alterations were CDKN2A/Bdel (71.4%), NOTCH1mut (47.6%) and FBXW7mut (17%). ETP-ALL had frequent FLT3mut (22.2%) and SUZ12del (16.7%) (p < 0.001), while CDKN2A/Bdel were rarely found in this subtype (p < 0.001). The early cortical T-ALL subtype had high frequencies of NOTCH1mut and IL7Rmut (71%, 28.6%, respectively), whereas, mature T-ALL with double positive CD4/CD8 had the highest frequencies of STIL-TAL1 (36.7%), LEF1del (27.3%) and CASP8AP2del (22.7%). The co-existence of two groups of T-ALL with NOTCH1mut/IL7Rmut, and with TLX3/SUZ12del/NF1del/IL7Rmut, were characterized with statistical significance (p < 0.05) but only STIL-TAL1 (pOS 47.5%) and NOTCH1WT/FBXW7WT (pOS 55.3%) are predictors of poor T-ALL outcomes. In conclusion, we have observed that 8 T-ALL subgroups are characterized by distinct molecular profiles. The mutations in NOTCH1/FBXW7 and STIL-TAL1 rearrangement had a prognostic impact, independent of immunophenotype.
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Affiliation(s)
- Elda Pereira Noronha
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Luísa Vieira Codeço Marques
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Francianne Gomes Andrade
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | | | - Eugênia Terra-Granado
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
| | - Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer, Rio de Janeiro, Brazil
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Brisson GD, de Almeida Lopes B, Andrade FG, Dos Santos Bueno FV, Sardou-Cezar I, de Aguiar Gonçalves BA, Terra-Granado E, Paraguassú-Braga FH, Pombo-de-Oliveira MS. EPHX1 rs1051740 T>C (Tyr113His) is strongly associated with acute myeloid leukemia and KMT2A rearrangements in early age. Arch Toxicol 2018; 92:2001-2012. [PMID: 29605894 DOI: 10.1007/s00204-018-2198-8] [Citation(s) in RCA: 2] [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: 11/29/2017] [Accepted: 03/21/2018] [Indexed: 01/18/2023]
Abstract
Experimental and epidemiological data have shown that acute myeloid leukemia in early-age (i-AML) originates prenatally. The risk association between transplacental exposure to benzene metabolites and i-AML might be influenced by genetic susceptibility. In this study, we investigated the relationship between genetic polymorphisms in CYP2E1, EPHX1, MPO, NQO1, GSTM1 and GSTT1 genes, and i-AML risk. The study included 101 i-AMLs and 416 healthy controls. Genomic DNA from study subjects was purified from bone marrow or peripheral blood aspirates and genotyped for genetic polymorphisms by real-time PCR allelic discrimination, Sanger sequencing and multiplex PCR. Crude and adjusted odds ratios (OR, adjOR, respectively) with 95% confidence intervals (95% CI) were assessed using unconditional logistic regression to estimate the magnitude of risk associations. EPHX1 rs1051740 T>C was associated with i-AML risk under the co-dominant (adjOR 3.04, P = 0.003) and recessive (adjOR 2.99, P = 0.002) models. In stratified analysis, EPHX1 rs1051740 was associated with increased risk for i-AML with KMT2A rearrangement (adjOR 3.06, P = 0.045), i-AML with megakaryocytic differentiation (adjOR 5.10, P = 0.008), and i-AML with type I mutation (adjOR 2.02, P = 0.037). EPHX1 rs1051740-rs2234922 C-G haplotype was also associated with increased risk for i-AML (adjOR 2.55, P = 0.043), and for i-AML with KMT2A rearrangement (adjOR 3.23, P = 0.034). Since EPHX1 enzyme is essential in cellular defense against epoxides, the diminished enzymatic activity conferred by the variant allele C could explain the risk associations found for i-AML. In conclusion, EPHX1 rs1051740 plays an important role in i-AML's genetic susceptibility by modulating the carcinogenic effects of epoxide exposures in the bone marrow.
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Affiliation(s)
- Gisele Dallapicola Brisson
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Bruno de Almeida Lopes
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Francianne Gomes Andrade
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Filipe Vicente Dos Santos Bueno
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Ingrid Sardou-Cezar
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Bruno Alves de Aguiar Gonçalves
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Eugênia Terra-Granado
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil
| | - Flávio Henrique Paraguassú-Braga
- Centro de Processamento e Armazenamento Celular, Banco de Sangue de Cordão Umbilical, Centro de Transplante e Terapia Celular, Instituto Nacional de Câncer (INCA), Praça da Cruz Vermelha 23, Rio de Janeiro, RJ, Brazil
| | - Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Research Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti 37, Rio de Janeiro, RJ, Brazil.
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Fuka G, Farias-Vieira TM, Hummel L, Blunck CB, Santoro JC, Terra-Granado E, Barbosa TC, Emerenciano M, Pombo-de-Oliveira MS. Evaluation of multiplex ligation dependent probe amplification (MLPA) for identification of acute lymphoblastic leukemia with an intrachromosomal amplification of chromosome 21 (iAMP21) in a Brazilian population. Mol Cytogenet 2015; 8:35. [PMID: 26060508 PMCID: PMC4460763 DOI: 10.1186/s13039-015-0147-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [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: 04/22/2015] [Accepted: 05/20/2015] [Indexed: 12/02/2022] Open
Abstract
Background An intrachromosomal amplification of chromosome 21 (iAMP21) defines a unique subgroup of B-cell precursor acute lymphoblastic leukemia (BCP-ALL). The finding of three or more extra copies of the RUNX1 gene by fluorescence in situ hybridization (FISH) is internationally used to define an iAMP21. Genomic profiling of chromosome 21 has been suggested for assisting diagnostic case identification. Due to limitations of comparative genomic hybridization, in terms of a routine application as first line-screening tests we evaluated the multiplex ligation-dependent probe amplification (MLPA) SALSA P327_A1 and P327_B1 probe sets for detecting chromosome 21 copy number alterations in Brazilian childhood BCP-ALL. Results In 74 out of 368 patients gain of genetic material was detected. For data confirmation RUNX1 directed FISH was performed. Cells with ≥5 RUNX1 signals (n = 9) were considered as “true iAMP21” while <5 RUNX1 signals (n = 41) were counted as evidence for additional copies of intact chromosomes 21. All patients with an iAMP21 had high MLPA peak ratios (≥1.8), while the majority of patients with <5 RUNX1 presented low MLPA peak ratios (<1.8). Observed differences gained statistical strength by comparing probes located within the common region of amplification. Next, a principal component analysis was performed in order to illustrate distribution of cases according to their MLPA peak profile in two dimensions. Cases with an iAMP21 mostly clustered together, however additional cases with <5 RUNX1 signals or no available FISH data located in proximity. Conclusions MLPA qualified as a high throughput technique that could be employed in future studies for a critical comparison with data obtained by FISH, especially in cases where metaphase nuclei are not available. Taking submicroscopic aberrations into account examined by MLPA, cases exhibiting an “iAMP21 like” peak ratio profile but <5 RUNX1 signals should be considered as candidates for this chromosomal abnormality. Electronic supplementary material The online version of this article (doi:10.1186/s13039-015-0147-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Gerhard Fuka
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Tállita M Farias-Vieira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Leticia Hummel
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Caroline B Blunck
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Júlio C Santoro
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Eugênia Terra-Granado
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Thayana Conceição Barbosa
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Mariana Emerenciano
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
| | - Maria S Pombo-de-Oliveira
- Pediatric Hematology-Oncology Program, Research Center, Instituto Nacional de Câncer (INCA), Rua André Cavalcanti, 37, Rio de Janeiro, RJ 20231-050 Brazil
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Nunes MP, Fortes B, Silva-Filho JL, Terra-Granado E, Santos L, Conde L, de Araújo Oliveira I, Freire-de-Lima L, Martins MV, Pinheiro AAS, Takyia CM, Freire-de-Lima CG, Todeschini AR, DosReis GA, Morrot A. Inhibitory effects of Trypanosoma cruzi sialoglycoproteins on CD4+ T cells are associated with increased susceptibility to infection. PLoS One 2013; 8:e77568. [PMID: 24204874 PMCID: PMC3810146 DOI: 10.1371/journal.pone.0077568] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 09/03/2013] [Indexed: 01/16/2023] Open
Abstract
Background The Trypanosoma cruzi infection is associated with severe T cell unresponsiveness to antigens and mitogens characterized by decreased IL-2 synthesis. Trypanosoma cruzi mucin (Tc Muc) has been implicated in this phenomenom. These molecules contain a unique type of glycosylation consisting of several sialylated O-glycans linked to the protein backbone via N-acetylglucosamine residues. Methodology/Principal Findings In this study, we evaluated the ability of Tc Muc to modulate the activation of CD4+ T cells. Our data show that cross-linking of CD3 on naïve CD4+ T cells in the presence of Tc Muc resulted in the inhibition of both cytokine secretion and proliferation. We further show that the sialylated O-Linked Glycan residues from tc mucin potentiate the suppression of T cell response by inducing G1-phase cell cycle arrest associated with upregulation of mitogen inhibitor p27kip1. These inhibitory effects cannot be reversed by the addition of exogenous IL-2, rendering CD4+ T cells anergic when activated by TCR triggering. Additionally, in vivo administration of Tc Muc during T. cruzi infection enhanced parasitemia and aggravated heart damage. Analysis of recall responses during infection showed lower frequencies of IFN-γ producing CD4+ T cells in the spleen of Tc Muc treated mice, compared to untreated controls. Conclusions/Significance Our results indicate that Tc Muc mediates inhibitory efects on CD4+ T expansion and cytokine production, by blocking cell cycle progression in the G1 phase. We propose that the sialyl motif of Tc Muc is able to interact with sialic acid-binding Ig-like lectins (Siglecs) on CD4+ T cells, which may allow the parasite to modulate the immune system.
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Affiliation(s)
| | - Bárbara Fortes
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - João Luiz Silva-Filho
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | | | | | - Isadora de Araújo Oliveira
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Leonardo Freire-de-Lima
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Ana Acacia Sá Pinheiro
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christina Maeda Takyia
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Adriane Regina Todeschini
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - George Alexandre DosReis
- Carlos Chagas Filho Institute of Biophysics, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Alexandre Morrot
- Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
- * E-mail: (MPN); (AM)
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Mendes-da-Cruz DA, Stimamiglio MA, Muñoz JJ, Alfaro D, Terra-Granado E, Garcia-Ceca J, Alonso-Colmenar LM, Savino W, Zapata AG. Developing T-cell migration: role of semaphorins and ephrins. FASEB J 2012; 26:4390-9. [PMID: 22815386 DOI: 10.1096/fj.11-202952] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Cell migration is a crucial event for normal T-cell development, and various ligand/receptor pairs have been implicated. Most of them, including chemokines and extracellular matrix proteins, have attractant properties on thymocytes. We discuss herein two further groups of ligand/receptor pairs, semaphorins/neuropilins and ephs/ephrins, which are constitutively expressed by thymocytes and thymic microenvironmental cells. Evidence shows that the corresponding interactions are relevant for developing T-cell migration, including the entry of bone marrow progenitor cells, migration of CD4/CD8-defined thymocyte subpopulations triggered by chemokines and/or extracellular matrix proteins, and thymocyte export. Conceptually, the data summarized here show that thymocyte migration results from a complex network of molecular interactions, which generate not only attraction, but also repulsion of migrating T-cell precursors.
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12
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Morrot A, Terra-Granado E, Pérez AR, Silva-Barbosa SD, Milićević NM, Farias-de-Oliveira DA, Berbert LR, De Meis J, Takiya CM, Beloscar J, Wang X, Kont V, Peterson P, Bottasso O, Savino W. Chagasic thymic atrophy does not affect negative selection but results in the export of activated CD4+CD8+ T cells in severe forms of human disease. PLoS Negl Trop Dis 2011; 5:e1268. [PMID: 21858238 PMCID: PMC3156684 DOI: 10.1371/journal.pntd.0001268] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2011] [Accepted: 06/21/2011] [Indexed: 11/19/2022] Open
Abstract
Extrathymic CD4+CD8+ double-positive (DP) T cells are increased in some pathophysiological conditions, including infectious diseases. In the murine model of Chagas disease, it has been shown that the protozoan parasite Trypanosoma cruzi is able to target the thymus and induce alterations of the thymic microenvironment and the lymphoid compartment. In the acute phase, this results in a severe atrophy of the organ and early release of DP cells into the periphery. To date, the effect of the changes promoted by the parasite infection on thymic central tolerance has remained elusive. Herein we show that the intrathymic key elements that are necessary to promote the negative selection of thymocytes undergoing maturation during the thymopoiesis remains functional during the acute chagasic thymic atrophy. Intrathymic expression of the autoimmune regulator factor (Aire) and tissue-restricted antigen (TRA) genes is normal. In addition, the expression of the proapoptotic Bim protein in thymocytes was not changed, revealing that the parasite infection-induced thymus atrophy has no effect on these marker genes necessary to promote clonal deletion of T cells. In a chicken egg ovalbumin (OVA)-specific T-cell receptor (TCR) transgenic system, the administration of OVA peptide into infected mice with thymic atrophy promoted OVA-specific thymocyte apoptosis, further indicating normal negative selection process during the infection. Yet, although the intrathymic checkpoints necessary for thymic negative selection are present in the acute phase of Chagas disease, we found that the DP cells released into the periphery acquire an activated phenotype similar to what is described for activated effector or memory single-positive T cells. Most interestingly, we also demonstrate that increased percentages of peripheral blood subset of DP cells exhibiting an activated HLA-DR+ phenotype are associated with severe cardiac forms of human chronic Chagas disease. These cells may contribute to the immunopathological events seen in the Chagas disease. The thymus is a primary lymphoid organ that plays an important role on the development of the immune system and maturation of the T cell repertoire. During the normal life span, this organ undergoes involution during the aging and also in the presence of a wide variety of infectious diseases. It has been shown that the protozoan parasite Trypanosoma cruzi is able to target the thymus and induce alterations of the thymic microenvironment. In the acute phase, this results in a severe atrophy of the organ and early release of immature double-positive (DP) T cells into the periphery. The effect of the changes promoted by the parasite infection on thymic central tolerance has remained not clear. The present study shows that the intrathymic key elements that promote the negative selection of thymocytes during the thymopoiesis remains functional in the acute chagasic thymic atrophy. However, we found that the DP cells released into the periphery acquire an activated phenotype and its high frequency in the peripheral blood are associated with severe cardiac forms of human chronic Chagas disease.
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Affiliation(s)
- Alexandre Morrot
- Department of Immunology, Microbiology Institute, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
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13
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Terra-Granado E, Berbert LR, de Meis J, Nomizo R, Martins VR, Savino W, Silva-Barbosa SD. Is there a role for cellular prion protein in intrathymic T cell differentiation and migration? Neuroimmunomodulation 2007; 14:213-9. [PMID: 18073517 DOI: 10.1159/000110649] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
The cellular prion protein (PrP(C)) is expressed in the nervous and immune systems. Functionally, PrP(C) has been suggested to participate in neuron survival, neuritogenesis and T lymphocyte activation. Moreover, PrP(C) interaction with laminin influences neuronal adhesion and neurite extension. Nevertheless, so far the physiological role of PrP(C) has not been completely elucidated, particularly in the immune system. The aim of the study was to evaluate the possible participation of PrP(C) in intrathymic T cell development. We evaluated T cell differentiation markers in thymocytes and peripheral lymphocytes, as well as thymocyte death in PrP(C)-null or PrP(C)-overexpressing (Tga20) mice, compared to wild-type controls. In these same animals, we ascertained laminin-driven thymocyte migration. Compared to controls, only marginal differences were found in PrP(C)-null animals. However, Tga20 mice exhibited a severe thymic hypoplasia, with 10-20% lymphocytes compared to wild-type counterparts. In particular, the frequency of CD4+CD8+ cells was largely reduced, and this was accompanied by a dramatic increase in the frequency of CD4-CD8- thymocytes, which could be as high as 60-65% of the whole-cell suspensions. Moreover, Tga20 mice exhibited an increase in thymocyte death, comprising the CD4+CD8+, as well as CD4+ and CD8+ single-positive cells. Additionally, laminin-driven migration was largely impaired in Tga20 mice, in which we also found a significant decrease in total T lymphocytes in the spleen and lymph nodes. Our results show that PrP(C) overexpression alters intrathymic T cell development, a defect that likely has a negative impact in the formation of the T cell peripheral pool.
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Affiliation(s)
- Eugênia Terra-Granado
- Laboratory on Thymus Research, Oswaldo Cruz Institute, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
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14
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Savino W, Ayres Martins S, Neves-dos-Santos S, Smaniotto S, Ocampo JSP, Mendes-da-Cruz DA, Terra-Granado E, Kusmenok O, Villa-Verde DMS. Thymocyte migration: an affair of multiple cellular interactions? Braz J Med Biol Res 2003; 36:1015-25. [PMID: 12886455 DOI: 10.1590/s0100-879x2003000800007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
Cell migration is a crucial event in the general process of thymocyte differentiation. The cellular interactions involved in the control of this migration are beginning to be defined. At least chemokines and extracellular matrix proteins appear to be part of the game. Cells of the thymic microenvironment produce these two groups of molecules, whereas developing thymocytes express the corresponding receptors. Moreover, although chemokines and extracellular matrix can drive thymocyte migration per se, a combined role for these molecules appears to contribute to the resulting migration patterns of thymocytes in their various stages of differentiation. The dynamics of chemokine and extracellular matrix production and degradation is not yet well understood. However, matrix metalloproteinases are likely to play a role in the breakdown of intrathymic extracellular matrix contents. Thus, the physiological migration of thymocytes should be envisioned as a resulting vector of multiple, simultaneous and/or sequential stimuli involving chemokines, adhesive and de-adhesive extracellular matrix proteins, as well as matrix metalloproteinases. Accordingly, it is conceivable that any pathological change in any of these loops may result in the alteration of normal thymocyte migration. This seems to be the case in murine infection by the protozoan parasite Trypanosoma cruzi, the causative agent of Chagas' disease. A better knowledge of the physiological mechanisms governing thymocyte migration will provide new clues for designing therapeutic strategies targeting developing T cells.
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Affiliation(s)
- W Savino
- Laboratório de Pesquisa sobre Timo, Departamento de Imunologia, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
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