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Silva GR, Mattos DS, Bastos ACF, Viana BPPB, Brum MCM, Ferreira LB, Gimba ERP. Osteopontin-4 and Osteopontin-5 splice variants are expressed in several tumor cell lines. Mol Biol Rep 2020; 47:8339-8345. [PMID: 33006711 DOI: 10.1007/s11033-020-05867-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 09/25/2020] [Indexed: 02/07/2023]
Abstract
Among osteopontin splice variants (OPN-SV), the expression profile of osteopontin-4 (OPN4) and osteopontin-5 (OPN5) has not been addressed in distinct cancer types. We herein aimed to investigate their expression in several cancer cell lines, besides comparing it in relation to the three previously described OPN-SV: OPNa, OPNb and OPNc. Total RNA from cancer cell lines, including prostate (PC3 and DU145), ovarian (A2780), breast (MCF-7 and MDA-MB-231), colorectal (Caco-2, HT-29 and HCT-116), thyroid (TT, TPC1 and 8505c) and lung (A549 and NCI-H460) was extracted, followed by cDNA synthesis. OPN-SV transcript analysis by RT-PCR or RT-qPCR were performed using OPN-SV specific oligonucleotides and gapdh and actin transcripts were used as housekeeping controls. OPN4 and OPN5 transcripts displayed co-expression in most tested cell lines. OPN4 was found expressed in similar or higher levels in relation to OPN5. Moreover, in most tested cell lines, OPN4 is also expressed in similar levels to OPNa or OPNb. The expression of OPN5 is also generally variable in relation to the other OPN-SV, but expressed in similar or higher levels in relation to OPNc, depending on each tested cell line. OPN4 and OPN5 seem to be co-expressed in several tumor types and OPN4 is one of the most overexpressed OPN-SV in distinct tumor cell lines. Once both OPN4 and OPN5 are differentially expressed and also evidence tumor-specific expression patterns, we hypothesize that similarly to the other OPN-SV, they also possibly contribute to key aspects of tumor progression, what should be further functionally investigated in distinct tumor models.
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Affiliation(s)
- Gabriela Ribeiro Silva
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil.,Programa de Pós-Graduação Em Ciências Biomédicas, Fisiologia E Farmacologia, Instituto Biomédico, Av. Prof. Hernani Melo, Niterói, 101, CEP24210-130, Brazil
| | - Daniella Santos Mattos
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil.,Programa de Pós-Graduação Stricto Sensu em Oncologia, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil
| | - Ana Clara Fonseca Bastos
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil.,Programa de Pós-Graduação Stricto Sensu em Oncologia, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil
| | - Bruna Prunes Pena Baroni Viana
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil.,Programa de Pós-Graduação Stricto Sensu em Oncologia, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil
| | - Mariana Concentino Menezes Brum
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil.,Programa de Pós-Graduação Stricto Sensu em Oncologia, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil
| | - Luciana Bueno Ferreira
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil.,Programa de Pós-Graduação Stricto Sensu em Oncologia, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil
| | - Etel Rodrigues Pereira Gimba
- Programa de Oncobiologia Celular e Molecular, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil. .,Programa de Pós-Graduação Stricto Sensu em Oncologia, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil. .,Divisão de Pesquisa Clínica, Instituto Nacional de Câncer, Rua André Cavalcanti, 37, 3° andar, Rio de Janeiro, CEP: 20 231 050, Brazil. .,Departamento de Ciências da Natureza, Instituto de Humanidades E Saúde, Universidade Federal Fluminense, Rua Recife 1-7, Bairro Bela Vista, Rio das Ostras, RJ, CEP 28880-000, Brazil. .,Programa de Pós-Graduação Em Ciências Biomédicas, Fisiologia E Farmacologia, Instituto Biomédico, Av. Prof. Hernani Melo, Niterói, 101, CEP24210-130, Brazil.
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Regulation of PI3K signaling in T-cell acute lymphoblastic leukemia: a novel PTEN/Ikaros/miR-26b mechanism reveals a critical targetable role for PIK3CD. Leukemia 2017; 31:2355-2364. [PMID: 28280276 PMCID: PMC5986278 DOI: 10.1038/leu.2017.80] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 02/21/2017] [Accepted: 02/23/2017] [Indexed: 01/07/2023]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is an aggressive hematologic
malignancy, and T-ALL patients are prone to early disease relapse and suffer
from poor outcomes. The PTEN, PI3K/AKT, and Notch pathways are frequently
altered in T-ALL. PTEN is a tumor suppressor that inactivates the PI3K pathway.
We profiled miRNAs in Pten-deficient mouse T-ALL and identified
miR-26b as a potentially dysregulated gene. We validated decreased expression
levels of miR-26b in mouse and human T-ALL cells. In addition, expression of
exogenous miR-26b reduced proliferation and promoted apoptosis of T-ALL cells
in vitro, and hindered progression of T-ALL in
vivo. Furthermore, miR-26b inhibited the PI3K/AKT pathway by
directly targeting PIK3CD, the gene encoding PI3Kδ, in
human T-ALL cell lines. ShRNA for PIK3CD and CAL-101, a PIK3CD
inhibitor, reduced the growth and increased apoptosis of T-ALL cells. Finally,
we showed that PTEN induced miR-26b expression by regulating the differential
expression of Ikaros isoforms that are transcriptional regulators of miR-26b.
These results suggest that miR-26b functions as a tumor suppressor in the
development of T-ALL. Further characterization of targets and regulators of
miR-26b may be promising for the development of novel therapies.
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Vitale C, Griggio V, Todaro M, Salvetti C, Boccadoro M, Coscia M. Magic pills: new oral drugs to treat chronic lymphocytic leukemia. Expert Opin Pharmacother 2017; 18:411-425. [DOI: 10.1080/14656566.2017.1293655] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Candida Vitale
- Division of Hematology, University of Torino, AOU Città della Salute e della Scienza di Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Valentina Griggio
- Division of Hematology, University of Torino, AOU Città della Salute e della Scienza di Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Maria Todaro
- Division of Hematology, University of Torino, AOU Città della Salute e della Scienza di Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Chiara Salvetti
- Division of Hematology, University of Torino, AOU Città della Salute e della Scienza di Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Mario Boccadoro
- Division of Hematology, University of Torino, AOU Città della Salute e della Scienza di Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
| | - Marta Coscia
- Division of Hematology, University of Torino, AOU Città della Salute e della Scienza di Torino, Torino, Italy
- Department of Molecular Biotechnology and Health Sciences, University of Torino, Torino, Italy
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Fionda C, Abruzzese MP, Zingoni A, Cecere F, Vulpis E, Peruzzi G, Soriani A, Molfetta R, Paolini R, Ricciardi MR, Petrucci MT, Santoni A, Cippitelli M. The IMiDs targets IKZF-1/3 and IRF4 as novel negative regulators of NK cell-activating ligands expression in multiple myeloma. Oncotarget 2015; 6:23609-30. [PMID: 26269456 PMCID: PMC4695140 DOI: 10.18632/oncotarget.4603] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 06/14/2015] [Indexed: 12/12/2022] Open
Abstract
Immunomodulatory drugs (IMiDs) have potent anti-tumor activities in multiple myeloma (MM) and are able to enhance the cytotoxic function of natural killer (NK) cells, important effectors of the immune response against MM. Here, we show that these drugs can enhance the expression of the NKG2D and DNAM-1 activating receptor ligands MICA and PVR/CD155 in human MM cell lines and primary malignant plasma cells. Depletion of cereblon (CRBN) by shRNA interference strongly impaired upregulation of these ligands and, more interestingly, IMiDs/CRBN-mediated downregulation of the transcription factors Ikaros (IKZF1), Aiolos (IKZF3) and IRF4 was critical for these regulatory mechanisms. Indeed, shRNA knockdown of IKZF1 or IKZF3 expression was both necessary and sufficient for the upregulation of MICA and PVR/CD155 expression, suggesting that these transcription factors can repress these genes; accordingly, the direct interaction and the negative role of IKZF1 and IKZF3 proteins on MICA and PVR/CD155 promoters were demonstrated. Finally, MICA expression was enhanced in IRF4-silenced cells, indicating a specific suppressive role of this transcription factor on MICA gene expression in MM cells.Taken together, these findings describe novel molecular pathways involved in the regulation of MICA and PVR/CD155 gene expression and identify the transcription factors IKZF-1/IKZF-3 and IRF4 as repressors of these genes in MM cells.
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Affiliation(s)
- Cinzia Fionda
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Maria Pia Abruzzese
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Alessandra Zingoni
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Francesca Cecere
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Elisabetta Vulpis
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Giovanna Peruzzi
- Istituto Italiano di Tecnologia, CLNS@Sapienza, Sapienza University of Rome, Rome, Italy
| | - Alessandra Soriani
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Rosa Molfetta
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Rossella Paolini
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
| | - Maria Rosaria Ricciardi
- Division of Hematology, Department of Cellular Biotechnologies and Hematology, Sapienza University of Rome, Rome, Italy
| | - Maria Teresa Petrucci
- Division of Hematology, Department of Cellular Biotechnologies and Hematology, Sapienza University of Rome, Rome, Italy
| | - Angela Santoni
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
- Istituto Mediterraneo di Neuroscienze Neuromed, Pozzilli, Italy
| | - Marco Cippitelli
- Department of Molecular Medicine, Istituto Pasteur-Fondazione Cenci Bolognetti, Sapienza University of Rome, Rome, Italy
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Ikaros could be a key factor in the maintenance of "B-side" of B-1 cells. Immunobiology 2015; 220:1232-9. [PMID: 26141488 DOI: 10.1016/j.imbio.2015.06.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/14/2015] [Accepted: 06/05/2015] [Indexed: 01/01/2023]
Abstract
Ikaros, a zinc finger transcription factor, is an important regulator of the hematopoietic system. Several studies have suggested the role of Ikaros in the development, maturation, activation and differentiation of lymphocytes. To elucidate this mechanism, it is important to understand how this transcription factor works in the dichotomy of the hematopoietic system, a topic that remains uncertain. Herein, we investigated the role of Ikaros in the control of the lymphomyeloid phenotype of B-1 lymphocytes. We found that Ikaros, as well as its target genes, are expressed in B-1 cells,. Moreover, Ikaros positively regulates the expression of Flt3, Gfi and Il7r, while it down-regulates PU.1. During the induction of differentiation of B-1 cells toward phagocytes, Ikaros transcription was reduced. Taken together, these data pointed to the relevance of Ikaros in the maintenance of the promiscuous gene profile of B-1 cells. It could be suggested that Ikaros functions as a guardian of B-1 lymphoid pattern, and that its absence directs the differentiation of B-1 cells into phagocytes.
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