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Díaz-Beyá M, Brunet S, Nomdedéu J, Cordeiro A, Tormo M, Escoda L, Ribera JM, Arnan M, Heras I, Gallardo D, Bargay J, Queipo de Llano MP, Salamero O, Martí JM, Sampol A, Pedro C, Hoyos M, Pratcorona M, Castellano JJ, Nomdedeu M, Risueño RM, Sierra J, Monzó M, Navarro A, Esteve J. The expression level of BAALC-associated microRNA miR-3151 is an independent prognostic factor in younger patients with cytogenetic intermediate-risk acute myeloid leukemia. Blood Cancer J 2015; 5:e352. [PMID: 26430723 PMCID: PMC4635188 DOI: 10.1038/bcj.2015.76] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 08/03/2015] [Indexed: 12/14/2022] Open
Abstract
Acute myeloid leukemia (AML) is a heterogeneous disease whose prognosis is mainly related to the biological risk conferred by cytogenetics and molecular profiling. In elderly patients (⩾60 years) with normal karyotype AML miR-3151 have been identified as a prognostic factor. However, miR-3151 prognostic value has not been examined in younger AML patients. In the present work, we have studied miR-3151 alone and in combination with BAALC, its host gene, in a cohort of 181 younger intermediate-risk AML (IR-AML) patients. Patients with higher expression of miR-3151 had shorter overall survival (P=0.0025), shorter leukemia-free survival (P=0.026) and higher cumulative incidence of relapse (P=0.082). Moreover, in the multivariate analysis miR-3151 emerged as independent prognostic marker in both the overall series and within the unfavorable molecular prognostic category. Interestingly, the combined determination of both miR-3151 and BAALC improved this prognostic stratification, with patients with low levels of both parameters showing a better outcome compared with those patients harboring increased levels of one or both markers (P=0.003). In addition, we studied the microRNA expression profile associated with miR-3151 identifying a six-microRNA signature. In conclusion, the analysis of miR-3151 and BAALC expression may well contribute to an improved prognostic stratification of younger patients with IR-AML.
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Affiliation(s)
- M Díaz-Beyá
- Hematology Department, IDIBAPS, Hospital Clinic, Barcelona, Spain.,Josep Carreras Leukaemia Research Institute, Barcelona, Spain
| | - S Brunet
- Josep Carreras Leukaemia Research Institute, Barcelona, Spain.,Hematology Department and Biological Hematology Laboratory, Hospital de Sant Pau, Barcelona, IIB-Sant Pau Research Institute, Universitat Autonoma of Barcelona, Barcelona, Spain
| | - J Nomdedéu
- Josep Carreras Leukaemia Research Institute, Barcelona, Spain.,Hematology Department and Biological Hematology Laboratory, Hospital de Sant Pau, Barcelona, IIB-Sant Pau Research Institute, Universitat Autonoma of Barcelona, Barcelona, Spain
| | - A Cordeiro
- Molecular Oncology and Embryology Laboratory, Human Anatomy Unit, School of Medicine, University of Barcelona, Barcelona, Spain
| | - M Tormo
- Hematology Department, Hospital Clínico, Valencia, Spain
| | - L Escoda
- Hematology Department, Hospital Joan XXIII, Tarragona, Spain
| | - J M Ribera
- Josep Carreras Leukaemia Research Institute, Barcelona, Spain.,Hematology Department, Institut Català d'Oncologia (ICO)-Hospital Germans Trias i Pujol, Badalona, Spain
| | - M Arnan
- ICO, Hematology Department, Hospital Duran i Reynals, l'Hospitalet de Llobregat, Barcelona, Spain
| | - I Heras
- Hematology Department, Hospital Morales Meseguer, Murcia, Spain
| | - D Gallardo
- Hematology Department, ICO Josep Trueta, Girona, Spain
| | - J Bargay
- Hematology Department, Hospital de Son Llàtzer, Palma de Mallorca Hematology, Palma de Mallorca, Spain
| | | | - O Salamero
- Hematology Department, Hospital Vall d'Hebron, Barcelona, Spain
| | - J M Martí
- Hematology Department, Hospital Mutua de Terrassa, Barcelona, Spain
| | - A Sampol
- Hematology Department, Hospital de Son Llàtzer, Palma of Mallorca, Spain
| | - C Pedro
- Hematology Department, Hospital de Mar, Barcelona, Spain
| | - M Hoyos
- Hematology Department and Biological Hematology Laboratory, Hospital de Sant Pau, Barcelona, IIB-Sant Pau Research Institute, Universitat Autonoma of Barcelona, Barcelona, Spain
| | - M Pratcorona
- Hematology Department, IDIBAPS, Hospital Clinic, Barcelona, Spain.,Josep Carreras Leukaemia Research Institute, Barcelona, Spain
| | - J J Castellano
- Molecular Oncology and Embryology Laboratory, Human Anatomy Unit, School of Medicine, University of Barcelona, Barcelona, Spain
| | - M Nomdedeu
- Hematology Department, IDIBAPS, Hospital Clinic, Barcelona, Spain.,Josep Carreras Leukaemia Research Institute, Barcelona, Spain
| | - R M Risueño
- Josep Carreras Leukaemia Research Institute, Barcelona, Spain
| | - J Sierra
- Josep Carreras Leukaemia Research Institute, Barcelona, Spain.,Hematology Department and Biological Hematology Laboratory, Hospital de Sant Pau, Barcelona, IIB-Sant Pau Research Institute, Universitat Autonoma of Barcelona, Barcelona, Spain
| | - M Monzó
- Molecular Oncology and Embryology Laboratory, Human Anatomy Unit, School of Medicine, University of Barcelona, Barcelona, Spain
| | - A Navarro
- Molecular Oncology and Embryology Laboratory, Human Anatomy Unit, School of Medicine, University of Barcelona, Barcelona, Spain
| | - J Esteve
- Hematology Department, IDIBAPS, Hospital Clinic, Barcelona, Spain.,Josep Carreras Leukaemia Research Institute, Barcelona, Spain.,University of Barcelona, Barcelona, Spain
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Iborra S, Abánades DR, Parody N, Carrión J, Risueño RM, Pineda MA, Bonay P, Alonso C, Soto M. The immunodominant T helper 2 (Th2) response elicited in BALB/c mice by the Leishmania LiP2a and LiP2b acidic ribosomal proteins cannot be reverted by strong Th1 inducers. Clin Exp Immunol 2007; 150:375-85. [PMID: 17900304 PMCID: PMC2219347 DOI: 10.1111/j.1365-2249.2007.03501.x] [Citation(s) in RCA: 11] [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: 11/28/2022] Open
Abstract
The search for disease-associated T helper 2 (Th2) Leishmania antigens and the induction of a Th1 immune response to them using defined vaccination protocols is a potential strategy to induce protection against Leishmania infection. Leishmania infantum LiP2a and LiP2b acidic ribosomal protein (P proteins) have been described as prominent antigens during human and canine visceral leishmaniasis. In this study we demonstrate that BALB/c mice infected with Leishmania major develop a Th2-like humoral response against Leishmania LiP2a and LiP2b proteins and that the same response is induced in BALB/c mice when the parasite P proteins are immunized as recombinant molecules without adjuvant. The genetic immunization of BALB/c mice with eukaryotic expression plasmids coding for these proteins was unable to redirect the Th2-like response induced by these antigens, and only the co-administration of the recombinant P proteins with CpG oligodeoxynucleotides (CpG ODN) promoted a mixed Th1/Th2 immune response. According to the preponderance of a Th2 or mixed Th1/Th2 responses elicited by the different regimens of immunization tested, no evidence of protection was observed in mice after challenge with L. major. Although alterations of the clinical outcome were not detected in mice presensitized with the P proteins, the enhanced IgG1 and interleukin (IL)-4 response against total Leishmania antigens in these mice may indicate an exacerbation of the disease.
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Affiliation(s)
- S Iborra
- Centro de Biología Molecular Severo Ochoa, Departamento de Biología Molecular, Facultad de Ciencias, Universidad Autónoma de Madrid, Madrid, Spain
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