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Tedeschi P, Brugnoli F, Merighi S, Grassilli S, Nigro M, Catani M, Gessi S, Bertagnolo V, Travagli A, Caboni MF, Cavazzini A. The Effect of Different Storage Conditions on Phytochemical Composition, Shelf-Life, and Bioactive Compounds of Voghiera Garlic PDO. Antioxidants (Basel) 2023; 12:antiox12020499. [PMID: 36830057 PMCID: PMC9952458 DOI: 10.3390/antiox12020499] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/07/2023] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
Voghiera garlic is an Italian white garlic variety which obtained in 2010 the Protected Designation of Origin. It is widely used for culinary purposes or as an ingredient for supplement production due to its phytochemical compositions. The storage conditions seem to be crucial to retain the high quality of garlic bulbs and their by-products, taking into account the high importance of organosulfur and phenolic compounds for the bioactive potency of garlic and its shelf-life. This study aims to examine the effect of storage on the phytochemical composition, biological effects, and shelf-life of Voghiera garlic PDO. In detail, we considered (i) -4 °C (industrial storage) for 3, 6, and 9 months; (ii) +4 °C for 3 months (home conservation), and (iii) -4 °C for 3 months, plus +4 °C for another 3 months. We focused our attention on the organosulfur compounds, total condensed tannins, flavonoids, phenolic compounds, and related antioxidant activity changes during the storage period. To evaluate the bioactive effects, the Voghiera garlic extracts at different storage conditions were administered to a breast cancer cell line, while antioxidant and anti-inflammatory activity was detected using macrophage RAW 264.7 cells. We observed a decrease in sulfur compounds after 6 months which correlated to a decrease in bioactive effects, while the number of antioxidant compounds was stable during the storage period, showing the good effect of refrigerated temperature in maintaining garlic bulb shelf-life.
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Affiliation(s)
- Paola Tedeschi
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
- Correspondence:
| | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Stefania Merighi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Manuela Nigro
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Martina Catani
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
| | - Stefania Gessi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Alessia Travagli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Maria Fiorenza Caboni
- Department of Agricultural and Food Sciences and Technologies, University of Bologna, 40127 Bologna, Italy
| | - Alberto Cavazzini
- Department of Chemical, Pharmaceutical and Agricultural Sciences, University of Ferrara, 44121 Ferrara, Italy
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Canella R, Brugnoli F, Gallo M, Keillor JW, Terrazzan A, Ferrari E, Grassilli S, Gates EWJ, Volinia S, Bertagnolo V, Bianchi N, Bergamini CM. A Multidisciplinary Approach Establishes a Link between Transglutaminase 2 and the Kv10.1 Voltage-Dependent K + Channel in Breast Cancer. Cancers (Basel) 2022; 15:cancers15010178. [PMID: 36612174 PMCID: PMC9818547 DOI: 10.3390/cancers15010178] [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] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/15/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022] Open
Abstract
Since the multifunctionality of transglutaminase 2 (TG2) includes extra- and intracellular functions, we investigated the effects of intracellular administration of TG2 inhibitors in three breast cancer cell lines, MDA-MB-231, MDA-MB-436 and MDA-MB-468, which are representative of different triple-negative phenotypes, using a patch-clamp technique. The first cell line has a highly voltage-dependent a membrane current, which is low in the second and almost absent in the third one. While applying a voltage protocol to responsive single cells, injection of TG2 inhibitors triggered a significant decrease of the current in MDA-MB-231 that we attributed to voltage-dependent K+ channels using the specific inhibitors 4-aminopyridine and astemizole. Since the Kv10.1 channel plays a dominant role as a marker of cell migration and survival in breast cancer, we investigated its relationship with TG2 by immunoprecipitation. Our data reveal their physical interaction affects membrane currents in MDA-MB-231 but not in the less sensitive MDA-MB-436 cells. We further correlated the efficacy of TG2 inhibition with metabolic changes in the supernatants of treated cells, resulting in increased concentration of methyl- and dimethylamines, representing possible response markers. In conclusion, our findings highlight the interference of TG2 inhibitors with the Kv10.1 channel as a potential therapeutic tool depending on the specific features of cancer cells.
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Affiliation(s)
- Rita Canella
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy
| | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Mariana Gallo
- Department of Medicine and Surgery, University of Parma, 43125 Parma, Italy
| | - Jeffrey W. Keillor
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Anna Terrazzan
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Elena Ferrari
- Department of Medicine and Surgery, University of Parma, 43125 Parma, Italy
| | - Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Eric W. J. Gates
- Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
| | - Stefano Volinia
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Nicoletta Bianchi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
- Correspondence: ; Tel.: +39-0532-455854
| | - Carlo M. Bergamini
- Department of Neuroscience and Rehabilitation, University of Ferrara, 44121 Ferrara, Italy
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Grassilli S, Brugnoli F, Cairo S, Bianchi N, Judde JG, Bertagnolo V. Vav1 Selectively Down-Regulates Akt2 through miR-29b in Certain Breast Tumors with Triple Negative Phenotype. J Pers Med 2022; 12:jpm12060993. [PMID: 35743776 PMCID: PMC9224635 DOI: 10.3390/jpm12060993] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 05/17/2022] [Revised: 06/14/2022] [Accepted: 06/16/2022] [Indexed: 12/24/2022] Open
Abstract
Triple negative breast cancer (TNBC) represents the most aggressive breast tumor, showing a high intrinsic variability in terms of both histopathological features and response to therapies. Blocking the Akt signaling pathway is a well-studied approach in the treatment of aggressive breast tumors. The high homology among the Akt isoforms and their distinct, and possibly opposite, oncogenic functions made it difficult to develop effective drugs. Here we investigated the role of Vav1 as a potential down-regulator of individual Akt isozymes. We revealed that the over-expression of Vav1 in triple negative MDA-MB-231 cells reduced only the Akt2 isoform, acting at the post-transcriptional level through the up-modulation of miR-29b. The Vav1/miR-29b dependent decrease in Akt2 was correlated with a reduced lung colonization of circulating MDA-MB-231 cells. In cell lines established from PDX, the Vav1 induced down-modulation of Akt2 is strongly dependent on miR-29b and occurs only in some TNBC tumors. These findings may contribute to better classify breast tumors having the triple negative phenotype, and suggest that the activation of the Vav1/miR-29b axis, precisely regulating the amount of an Akt isozyme crucial for tumor dissemination, could have great potential for driving more accurate therapies to TNBCs, often not eligible or resistant to treatments.
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Affiliation(s)
- Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (S.G.); (F.B.); (N.B.)
- LTTA Centre, University of Ferrara, 44121 Ferrara, Italy
| | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (S.G.); (F.B.); (N.B.)
| | - Stefano Cairo
- Xentech, 91000 Evry, France; (S.C.); (J.-G.J.)
- Istituto di Ricerca Pediatrica, 35127 Padova, Italy
| | - Nicoletta Bianchi
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (S.G.); (F.B.); (N.B.)
| | | | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy; (S.G.); (F.B.); (N.B.)
- Correspondence:
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Corrà F, Crudele F, Baldassari F, Bianchi N, Galasso M, Minotti L, Agnoletto C, Di Leva G, Brugnoli F, Reali E, Bertagnolo V, Vecchione A, Volinia S. UC.183, UC.110, and UC.84 Ultra-Conserved RNAs Are Mutually Exclusive with miR-221 and Are Engaged in the Cell Cycle Circuitry in Breast Cancer Cell Lines. Genes (Basel) 2021; 12:genes12121978. [PMID: 34946928 PMCID: PMC8701292 DOI: 10.3390/genes12121978] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 12/13/2022] Open
Abstract
In the human genome, there are about 600 ultra-conserved regions (UCRs), long DNA sequences extremely conserved in vertebrates. We performed a large-scale study to quantify transcribed UCR (T-UCR) and miRNA levels in over 6000 cancer and normal tissue samples to find possible correlation between these kinds of regulatory molecules. Our analysis evidenced several non-coding RNAs showing negative co-regulation with miRNAs; among them, we focused on miR-221 to investigate any relationship with its pivotal role in the cell cycle. We have chosen breast cancer as model, using two cell lines with different phenotypes to carry out in vitro treatments with siRNAs against T-UCRs. Our results demonstrate that the expression of uc.183, uc.110, and uc.84 T-UCRs is mutually exclusive with miR-221 and is engaged in the regulation of CDKN1B expression. In addition, tests with a set of anticancer drugs, including BYL719, AZD5363, AZD8055, AZD7762, and XL765, revealed the modulation of specific T-UCRs without alteration of miR-221 levels.
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Affiliation(s)
- Fabio Corrà
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Francesca Crudele
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Federica Baldassari
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Nicoletta Bianchi
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Marco Galasso
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Linda Minotti
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Chiara Agnoletto
- Advanced Translational Research Laboratory, Veneto Institute of Oncology IOV-IRCCS, 35127 Padua, Italy;
| | - Gianpiero Di Leva
- School of Pharmacy and Bioengineering, Guy Hilton Research Centre, Keele University, Stoke-on-Trent ST4 7QB, UK;
| | - Federica Brugnoli
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Eva Reali
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, 20126 Milan, Italy;
| | - Valeria Bertagnolo
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
| | - Andrea Vecchione
- Department of Medical Surgical Science and Translational Medicine-c/o Azienda Ospedaliera Sant’Andrea, Via di Grottarossa 1035, 00189 Rome, Italy;
| | - Stefano Volinia
- Laboratorio per le Tecnologie delle Terapie Avanzate (LTTA), Department of Translational Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy; (F.C.); (F.C.); (F.B.); (N.B.); (M.G.); (L.M.); (F.B.); (V.B.)
- Correspondence: ; Tel.: +39-0532-455-714
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Crudele F, Bianchi N, Astolfi A, Grassilli S, Brugnoli F, Terrazzan A, Bertagnolo V, Negrini M, Frassoldati A, Volinia S. The Molecular Networks of microRNAs and Their Targets in the Drug Resistance of Colon Carcinoma. Cancers (Basel) 2021; 13:cancers13174355. [PMID: 34503164 PMCID: PMC8431668 DOI: 10.3390/cancers13174355] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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: 07/13/2021] [Revised: 08/19/2021] [Accepted: 08/22/2021] [Indexed: 12/25/2022] Open
Abstract
Simple Summary We systematically reviewed the recent scientific publications describing the role of microRNAs in the regulation of drug resistance in colon cancer. To clarify the intricate web of resulting genetic and biochemical interactions, we used a machine learning approach aimed at creating: (i) networks of validated miRNA/target interactions involved in drug resistances and (ii) drug-centric networks, from which we identified the major clusters of proteins affected by drugs used in the treatment of colon cancer. Finally, to facilitate a high-level interpretation of these molecular interactions, we determined the cellular pathways related with drug resistance and regulated by the miRNAs in colon cancer. Abstract Drug resistance is one of the major forces driving a poor prognosis during the treatment and progression of human colon carcinomas. The molecular mechanisms that regulate the diverse processes underlying drug resistance are still under debate. MicroRNAs (miRNAs) are a subgroup of non-coding RNAs increasingly found to be associated with the regulation of tumorigenesis and drug resistance. We performed a systematic review of the articles concerning miRNAs and drug resistance in human colon cancer published from 2013 onwards in journals with an impact factor of 5 or higher. First, we built a network with the most studied miRNAs and targets (as nodes) while the drug resistance/s are indicated by the connections (edges); then, we discussed the most relevant miRNA/targets interactions regulated by drugs according to the network topology and statistics. Finally, we considered the drugs as nodes in the network, to allow an alternative point of view that could flow through the treatment options and the associated molecular pathways. A small number of microRNAs and proteins appeared as critically involved in the most common drugs used for the treatment of patients with colon cancer. In particular, the family of miR-200, miR34a, miR-155 and miR-17 appear as the most relevant microRNAs. Thus, regulating these miRNAs could be useful for interfering with some drug resistance mechanisms in colorectal carcinoma.
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Affiliation(s)
- Francesca Crudele
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Nicoletta Bianchi
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Annalisa Astolfi
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Anna Terrazzan
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
| | - Massimo Negrini
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
| | - Antonio Frassoldati
- Department of Oncology, Azienda Ospedaliero-Universitaria St. Anna di Ferrara, Via A. Moro 8, 44124 Ferrara, Italy;
| | - Stefano Volinia
- Department of Translational Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy; (F.C.); (N.B.); (A.A.); (S.G.); (F.B.); (A.T.); (V.B.); (M.N.)
- Laboratory for Advanced Therapy Technologies (LTTA), Via Fossato di Mortara 70, 44121 Ferrara, Italy
- Correspondence:
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Brugnoli F, Tedeschi P, Grassilli S, Maietti A, Brandolini V, Bertagnolo V. Ethanol-based garlic extract prevents malignant evolution of non-invasive breast tumor cells induced by moderate hypoxia. Biomed Pharmacother 2021; 142:112052. [PMID: 34426261 DOI: 10.1016/j.biopha.2021.112052] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/10/2021] [Accepted: 08/12/2021] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND In breast cancer, low oxygen availability is associated with a more aggressive phenotype and with malignant evolution of non-invasive cells. Natural compounds have long attracted attention in cancer treatment, and in recent years garlic (Allium sativum) organosulfur derivatives have been shown to negatively affect growth and invasion of tumor cells. METHODS Homemade ethanol-based garlic extract (GE) was administered to MCF7 and MCF10DCIS breast tumor cell lines grown under moderate hypoxia. Cell cycle, epithelial-to-mesenchymal transition and cancer stem cell markers were evaluated. RESULTS We revealed that, in the non-invasive MCF10DCIS cells but not in the post-EMT MCF7 cells, low oxygen availability induced the decrease of E-cadherin and the increase of vimentin and motility, that were prevented by GE administration. In both cell lines, treatment with GE counteracted the up-modulation of CD133 positive cells induced by hypoxia. CONCLUSIONS Overall, our data firstly revealed anti-cancer properties of garlic in non-invasive breast cancer cells. In particular, they demonstrated a protective role of this natural product against the hypoxia-induced increase of molecules that play crucial roles in tumor evolution, suggesting that garlic derivatives can be considered in new approaches for preventing progression of breast tumors from non-invasive to infiltrating lesions.
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Affiliation(s)
- Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Paola Tedeschi
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS), University of Ferrara, 44121 Ferrara, Italy
| | - Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy
| | - Annalisa Maietti
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS), University of Ferrara, 44121 Ferrara, Italy
| | - Vincenzo Brandolini
- Department of Chemical, Pharmaceutical and Agricultural Sciences (DOCPAS), University of Ferrara, 44121 Ferrara, Italy
| | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, 44121 Ferrara, Italy.
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7
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Grassilli S, Vezzali F, Cairo S, Brugnoli F, Volinia S, De Mattei M, Judde JG, Bertagnolo V. Targeting the Vav1/miR‑29b axis as a potential approach for treating selected molecular subtypes of triple‑negative breast cancer. Oncol Rep 2021; 45:83. [PMID: 33846812 DOI: 10.3892/or.2021.8034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 11/18/2020] [Accepted: 03/10/2021] [Indexed: 11/05/2022] Open
Abstract
MicroRNA (miR)‑29b has been reported to play a controversial role in breast cancer, particularly triple‑negative breast cancer (TNBC). Based on our previous data revealing that the PU.1‑mediated expression of miR‑29b in cells from acute myeloid leukemia is sustained by Vav1, the potential role of this multidomain protein in modulating miR‑29b levels in breast tumor cells, in which Vav1 is ecstopically expressed and shows a nuclear accumulation, was investigated. Breast cancer cell lines with various phenotypes and patient‑derived xenograft‑derived TNBC cells were subjected to Vav1 modulation and reverse transcription quantitative PCR of miR‑29b levels. The recruitment of CCAAT enhancer binding protein α (CEBPα) to miR‑29b promoters was investigated by quantitative chromatin immunoprecipitation assays. It was found that Vav1 was essential for the recovery of mature miR‑29b in breast cancer cell lines, and that it promoted the expression of the miRNA in TNBC cells of the mesenchymal molecular subtype by sustaining the transcription of the miR‑29b1/a cluster mediated by CEBPα. The present results suggest that Vav1 is a crucial modulator of miR‑29b expression in breast tumor cells, and this finding may help identify strategies that may be useful in the management of TNBC by targeting the Vav1/miR‑29b axis, as there is a lack of molecular‑based treatments for TNBC.
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Affiliation(s)
- Silvia Grassilli
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | - Federica Vezzali
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | | | - Federica Brugnoli
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | - Stefano Volinia
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
| | - Monica De Mattei
- Department of Medical Sciences, University of Ferrara, I-44121 Ferrara, Italy
| | | | - Valeria Bertagnolo
- Department of Translational Medicine, University of Ferrara, I-44121 Ferrara, Italy
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8
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Veschi S, Ronci M, Lanuti P, De Lellis L, Florio R, Bologna G, Scotti L, Carletti E, Brugnoli F, Di Bella MC, Bertagnolo V, Marchisio M, Cama A. Integrative proteomic and functional analyses provide novel insights into the action of the repurposed drug candidate nitroxoline in AsPC-1 cells. Sci Rep 2020; 10:2574. [PMID: 32054977 PMCID: PMC7018951 DOI: 10.1038/s41598-020-59492-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [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: 10/23/2019] [Accepted: 12/18/2019] [Indexed: 02/07/2023] Open
Abstract
We recently identified nitroxoline as a repurposed drug candidate in pancreatic cancer (PC) showing a dose-dependent antiproliferative activity in different PC cell lines. This antibiotic is effective in several in vitro and animal cancer models. To date, the mechanisms of nitroxoline anticancer action are largely unknown. Using shotgun proteomics we identified 363 proteins affected by nitroxoline treatment in AsPC-1 pancreatic cancer cells, including 81 consistently deregulated at both 24- and 48-hour treatment. These proteins previously unknown to be affected by nitroxoline were mostly downregulated and interconnected in a single highly-enriched network of protein-protein interactions. Integrative proteomic and functional analyses revealed nitroxoline-induced downregulation of Na/K-ATPase pump and β-catenin, which associated with drastic impairment in cell growth, migration, invasion, increased ROS production and induction of DNA damage response. Remarkably, nitroxoline induced a previously unknown deregulation of molecules with a critical role in cell bioenergetics, which resulted in mitochondrial depolarization. Our study also suggests that deregulation of cytosolic iron homeostasis and of co-translational targeting to membrane contribute to nitroxoline anticancer action. This study broadens our understanding of the mechanisms of nitroxoline action, showing that the drug modulates multiple proteins crucial in cancer biology and previously unknown to be affected by nitroxoline.
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Affiliation(s)
- Serena Veschi
- Department of Pharmacy, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Maurizio Ronci
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy.,Centre on Aging Sciences and Translational Medicine (Ce.S.I-Me.T), G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Paola Lanuti
- Centre on Aging Sciences and Translational Medicine (Ce.S.I-Me.T), G. d'Annunzio University of Chieti-Pescara, Chieti, Italy.,Department of Medicine and Aging Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Laura De Lellis
- Department of Pharmacy, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Rosalba Florio
- Department of Pharmacy, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Giuseppina Bologna
- Centre on Aging Sciences and Translational Medicine (Ce.S.I-Me.T), G. d'Annunzio University of Chieti-Pescara, Chieti, Italy.,Department of Medicine and Aging Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Luca Scotti
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Erminia Carletti
- Department of Medical, Oral and Biotechnological Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy.,Centre on Aging Sciences and Translational Medicine (Ce.S.I-Me.T), G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Federica Brugnoli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | | | - Valeria Bertagnolo
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Marco Marchisio
- Centre on Aging Sciences and Translational Medicine (Ce.S.I-Me.T), G. d'Annunzio University of Chieti-Pescara, Chieti, Italy.,Department of Medicine and Aging Sciences, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy
| | - Alessandro Cama
- Department of Pharmacy, G. d'Annunzio University of Chieti-Pescara, Chieti, Italy. .,Centre on Aging Sciences and Translational Medicine (Ce.S.I-Me.T), G. d'Annunzio University of Chieti-Pescara, Chieti, Italy.
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9
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Bertagnolo V, Grassilli S, Volinia S, Al-Qassab Y, Brugnoli F, Vezzali F, Lambertini E, Palomba M, Piubello Q, Orvieto E, Natali C, Piva R, Croce CM, Capitani S. Ectopic expression of PLC-β2 in non-invasive breast tumor cells plays a protective role against malignant progression and is correlated with the deregulation of miR-146a. Mol Carcinog 2019; 58:708-721. [PMID: 30582225 PMCID: PMC6590318 DOI: 10.1002/mc.22964] [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] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 10/31/2018] [Accepted: 12/19/2018] [Indexed: 12/12/2022]
Abstract
Cells in non‐invasive breast lesions are widely believed to possess molecular alterations that render them either susceptible or refractory to the acquisition of invasive capability. One such alteration could be the ectopic expression of the β2 isoform of phosphoinositide‐dependent phospholipase C (PLC‐β2), known to counteract the effects of hypoxia in low‐invasive breast tumor‐derived cells. Here, we studied the correlation between PLC‐β2 levels and the propensity of non‐invasive breast tumor cells to acquire malignant features. Using archival FFPE samples and DCIS‐derived cells, we demonstrate that PLC‐β2 is up‐regulated in DCIS and that its forced down‐modulation induces an epithelial‐to‐mesenchymal shift, expression of the cancer stem cell marker CD133, and the acquisition of invasive properties. The ectopic expression of PLC‐β2 in non‐transformed and DCIS‐derived cells is, to some extent, dependent on the de‐regulation of miR‐146a, a tumor suppressor miRNA in invasive breast cancer. Interestingly, an inverse relationship between the two molecules, indicative of a role of miR‐146a in targeting PLC‐β2, was not detected in primary DCIS from patients who developed a second invasive breast neoplasia. This suggests that alterations of the PLC‐β2/miR‐146a relationship in DCIS may constitute a molecular risk factor for the appearance of new breast lesions. Since neither traditional classification systems nor molecular characterizations are able to predict the malignant potential of DCIS, as is possible for invasive ductal carcinoma (IDC), we propose that the assessment of the PLC‐β2/miR‐146a levels at diagnosis could be beneficial for identifying whether DCIS patients may have either a low or high propensity for invasive recurrence.
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Affiliation(s)
- Valeria Bertagnolo
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Silvia Grassilli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Stefano Volinia
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.,Comprehensive Cancer Center, Wexner Medical Center, Ohio State University, Columbus, Ohio.,LTTA, University of Ferrara, Ferrara, Italy
| | - Yasamin Al-Qassab
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.,College of Medicine, Department of Anatomy, University of Baghdad, Baghdad, Iraq
| | - Federica Brugnoli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Federica Vezzali
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Elisabetta Lambertini
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - Maria Palomba
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Quirino Piubello
- Division of Anatomic Pathology, Department of Diagnostic and Pathology, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
| | - Enrico Orvieto
- Department of Medicine DIMED, Surgical Pathology and Cytopathology Unit, University of Padua, Padua, Italy
| | - Cristina Natali
- Pathology Division, Santa Maria della Misericordia Hospital, Rovigo, Italy
| | - Roberta Piva
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - Carlo Maria Croce
- Comprehensive Cancer Center, Wexner Medical Center, Ohio State University, Columbus, Ohio
| | - Silvano Capitani
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy.,LTTA, University of Ferrara, Ferrara, Italy
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10
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Al-Qassab Y, Grassilli S, Brugnoli F, Vezzali F, Capitani S, Bertagnolo V. Protective role of all-trans retinoic acid (ATRA) against hypoxia-induced malignant potential of non-invasive breast tumor derived cells. BMC Cancer 2018; 18:1194. [PMID: 30497437 PMCID: PMC6267073 DOI: 10.1186/s12885-018-5038-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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: 06/18/2018] [Accepted: 11/04/2018] [Indexed: 12/14/2022] Open
Abstract
Background The presence of hypoxic areas is common in all breast lesions but no data clearly correlate low oxygenation with the acquisition of malignant features by non-invasive cells, particularly by cells from ductal carcinoma in situ (DCIS), the most frequently diagnosed tumor in women. Methods By using a DCIS-derived cell line, we evaluated the effects of low oxygen availability on malignant features of non-invasive breast tumor cells and the possible role of all-trans retinoic acid (ATRA), a well-known anti-leukemic drug, in counteracting the effects of hypoxia. The involvement of the β2 isoform of PI-PLC (PLC-β2), an ATRA target in myeloid leukemia cells, was also investigated by specific modulation of the protein expression. Results We demonstrated that moderate hypoxia is sufficient to induce, in DCIS-derived cells, motility, epithelial-to-mesenchymal transition (EMT) and expression of the stem cell marker CD133, indicative of their increased malignant potential. Administration of ATRA supports the epithelial-like phenotype of DCIS-derived cells cultured under hypoxia and keeps down the number of CD133 positive cells, abrogating almost completely the effects of poor oxygenation. We also found that the mechanisms triggered by ATRA in non-invasive breast tumor cells cultured under hypoxia is in part mediated by PLC-β2, responsible to counteract the effects of low oxygen availability on CD133 levels. Conclusions Overall, we assigned to hypoxia a role in increasing the malignant potential of DCIS-derived cells and we identified in ATRA, currently used in treatment of acute promyelocytic leukemia (APL), an agonist potentially useful in preventing malignant progression of non-invasive breast lesions showing hypoxic areas.
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Affiliation(s)
- Yasamin Al-Qassab
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy.,College of Medicine, Department of Anatomy, University of Baghdad, Baghdad, Iraq
| | - Silvia Grassilli
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy
| | - Federica Brugnoli
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy
| | - Federica Vezzali
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy
| | - Silvano Capitani
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy.,LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Valeria Bertagnolo
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy.
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11
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Bertacchini J, Mediani L, Beretti F, Guida M, Ghalali A, Brugnoli F, Bertagnolo V, Petricoin E, Poti F, Arioli J, Anselmi L, Bari A, McCubrey J, Martelli AM, Cocco L, Capitani S, Marmiroli S. Clusterin enhances AKT2‐mediated motility of normal and cancer prostate cells through a PTEN and PHLPP1 circuit. J Cell Physiol 2018; 234:11188-11199. [DOI: 10.1002/jcp.27768] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2018] [Accepted: 10/30/2018] [Indexed: 01/15/2023]
Affiliation(s)
- Jessika Bertacchini
- Department of Biomedical, Metabolic, and Neural Sciences Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia Modena Italy
| | - Laura Mediani
- Department of Biomedical, Metabolic, and Neural Sciences Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia Modena Italy
| | - Francesca Beretti
- Department of Medicine, Surgery, Dentistry, and Morphology University of Modena and Reggio Emilia Modena Italy
| | - Marianna Guida
- Department of Biomedical, Metabolic, and Neural Sciences Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia Modena Italy
| | - Aram Ghalali
- Institute of Environment Medicine, Karolinska Institutet Stockholm Sweden
| | - Federica Brugnoli
- Department of Morphology, Surgery, and Experimental Medicine Section of Anatomy and Histology and LTTA Center, University of Ferrara Ferrara Italy
| | - Valeria Bertagnolo
- Department of Morphology, Surgery, and Experimental Medicine Section of Anatomy and Histology and LTTA Center, University of Ferrara Ferrara Italy
| | - Emanuel Petricoin
- Center for Applied Proteomics & Molecular Medicine, GMU Fairfax Virginia
| | - Francesco Poti
- Department of Medicine and Surgery‐Unit of Neurosciences University of Parma Parma Italy
| | - Jessica Arioli
- Department of Biomedical, Metabolic, and Neural Sciences Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia Modena Italy
| | - Laura Anselmi
- Department of Biomedical, Metabolic, and Neural Sciences Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia Modena Italy
| | - Alessia Bari
- Department of Diagnostic, Clinical Medicine and Public Health Program of Innovative Therapy in Oncology and Hematology, University of Modena and Reggio Emilia Modena Italy
| | - James McCubrey
- Department of Microbiology and Immunology Brody School of Medicine at East Carolina University Greenville North Carolina
| | - Alberto M. Martelli
- Department of Biomedical and NeuroMotor Sciences University of Bologna Bologna Italy
| | - Lucio Cocco
- Department of Biomedical and NeuroMotor Sciences University of Bologna Bologna Italy
| | - Silvano Capitani
- Department of Morphology, Surgery, and Experimental Medicine Section of Anatomy and Histology and LTTA Center, University of Ferrara Ferrara Italy
| | - Sandra Marmiroli
- Department of Biomedical, Metabolic, and Neural Sciences Section of Morphology, Signal Transduction Unit, University of Modena and Reggio Emilia Modena Italy
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12
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Grassilli S, Brugnoli F, Lattanzio R, Marchisio M, Perracchio L, Piantelli M, Bavelloni A, Capitani S, Bertagnolo V. Vav1 downmodulates Akt in different breast cancer subtypes: a new promising chance to improve breast cancer outcome. Mol Oncol 2018; 12:1012-1025. [PMID: 29658179 PMCID: PMC6026867 DOI: 10.1002/1878-0261.12203] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 02/23/2018] [Revised: 03/22/2018] [Accepted: 04/02/2018] [Indexed: 11/07/2022] Open
Abstract
Targeting different members of the Akt pathways is a promising therapeutic chance in solid tumors including breast cancer. The variable expression levels of Akt isoforms with opposite effects on tumor growth and metastasis, however, make it difficult to select the inhibitors to be used for specific breast tumor subtypes. Using in vitro and in vivo models, we demonstrated here that Vav1, ectopically expressed in invasive breast tumors derived cells, downmodulates Akt acting at expression and/or activation levels depending on tumor subtype. The decreased p‐Akt1 (Ser473) levels are a common effect of Vav1 upmodulation, suggesting that, in breast tumor‐derived cells and independently of their phenotype, Vav1 interferes with signaling pathways ended to specifically recruit Akt1. Only in ER‐negative cell lines, the silencing of Vav1 induced the expression but not the activation of Akt2. A retrospective analysis of early invasive breast tumors allowed to establish the prognostic significance of the p‐Akt/Vav1 relationship. In particular, low Vav1 levels negatively influence the follow‐up of patients with low p‐Akt in their primary tumors and subjected to adjuvant chemotherapy. As the use of specific or pan Akt inhibitors may not be sufficient or may even be detrimental, increasing the levels of Vav1 could be a new approach to improve breast cancer outcomes. This might be particularly relevant for tumors with a triple‐negative phenotype, for which target‐based therapies are not currently available.
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Affiliation(s)
- Silvia Grassilli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
| | - Federica Brugnoli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
| | - Rossano Lattanzio
- Department of Medical, Oral and Biotechnological Sciences, University 'G. d'Annunzio', Chieti, Italy.,Center on Aging Sciences and Translational Medicine (CeSI-MeT), University 'G. d'Annunzio', Chieti, Italy
| | - Marco Marchisio
- Center on Aging Sciences and Translational Medicine (CeSI-MeT), University 'G. d'Annunzio', Chieti, Italy.,Department of Medicine and Aging Sciences, University 'G. d'Annunzio', Chieti, Italy
| | | | | | - Alberto Bavelloni
- Laboratory of Musculoskeletal Cell Biology, Rizzoli Orthopedic Institute, Bologna, Italy
| | - Silvano Capitani
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy.,LTTA Centre, University of Ferrara, Italy
| | - Valeria Bertagnolo
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Italy
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13
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Volinia S, Bertagnolo V, Grassilli S, Brugnoli F, Manfrini M, Galasso M, Scatena C, Mazzanti CM, Lessi F, Naccarato G, Caligo A, Bianchini E, Piubello Q, Orvieto E, Rugge M, Natali C, Reale D, Vecchione A, Warner S, Croce CM, Capitani S. Levels of miR-126 and miR-218 are elevated in ductal carcinoma in situ (DCIS) and inhibit malignant potential of DCIS derived cells. Oncotarget 2018; 9:23543-23553. [PMID: 29805754 PMCID: PMC5955110 DOI: 10.18632/oncotarget.25261] [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: 11/28/2017] [Accepted: 04/06/2018] [Indexed: 12/21/2022] Open
Abstract
A substantial number of ductal carcinoma in situ (DCIS) detected by mammography never progress to invasive ductal carcinoma (IDC) and current approaches fail to identify low-risk patients not at need of adjuvant therapies. We aimed to identify the key miRNAs protecting DCIS from malignant evolution, that may constitute markers for non-invasive lesions. We studied 100 archived DCIS samples, including pure DCIS, DCIS with adjacent IDC and pure DCIS from patients with subsequent IDC in contralateral breast or no recurrence. A DCIS derived cell line was used for molecular and cellular studies. A genome wide study revealed that pure DCIS has higher miR-126 and miR-218 expression than DCIS with adjacent IDC lesions or than IDC. The down-regulation of miR-126 and miR-218 promoted invasiveness in vitro and, in patients with pure DCIS, was associated with later onset of IDC. Survival studies of independent cohorts indicated that both miRNAs play a protective role in IDC. The clinical findings are in agreement with the miRNAs' roles in cell adhesion, differentiation and proliferation. We propose that miR-126 and miR-218 have a protective role in DCIS and represent novel biomarkers for the risk assessment in women with early detection of breast cancer.
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Affiliation(s)
- Stefano Volinia
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy.,LTTA Centre, University of Ferrara, Ferrara 44121, Italy
| | - Valeria Bertagnolo
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy
| | - Silvia Grassilli
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy
| | - Federica Brugnoli
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy
| | - Marco Manfrini
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy
| | - Marco Galasso
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy
| | - Cristian Scatena
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa 56126, Italy
| | | | | | - Giuseppe Naccarato
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa 56126, Italy
| | - Adelaide Caligo
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa 56126, Italy
| | - Enzo Bianchini
- Pathology Division, S. Anna University Hospital, Ferrara 44124, Italy
| | - Quirino Piubello
- Department of Diagnostic and Pathology, Azienda Ospedaliera Universitaria Integrata di Verona, Verona 37126, Italy
| | - Enrico Orvieto
- Department of Medicine DIMED, University of Padova, Padova 35121, Italy
| | - Massimo Rugge
- Department of Medicine DIMED, University of Padova, Padova 35121, Italy
| | - Cristina Natali
- Pathology Division, Santa Maria della Misericordia Hospital, Rovigo 45100, Italy
| | - Domenico Reale
- Pathology Division, Santa Maria della Misericordia Hospital, Rovigo 45100, Italy
| | - Andrea Vecchione
- Department of Pathology, St. Andrea University Hospital, University of Rome, La Sapienza, Rome 00185, Italy
| | - Sarah Warner
- Comprehensive Cancer Center, Ohio State University, Columbus, OH 43210, USA
| | - Carlo Maria Croce
- Comprehensive Cancer Center, Ohio State University, Columbus, OH 43210, USA
| | - Silvano Capitani
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara 44121, Italy.,LTTA Centre, University of Ferrara, Ferrara 44121, Italy
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14
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Vezzali F, Grassilli S, Lambertini E, Brugnoli F, Patergnani S, Nika E, Piva R, Pinton P, Capitani S, Bertagnolo V. Vav1 is necessary for PU.1 mediated upmodulation of miR-29b in acute myeloid leukaemia-derived cells. J Cell Mol Med 2018. [PMID: 29532991 PMCID: PMC5980196 DOI: 10.1111/jcmm.13594] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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] [Indexed: 12/11/2022] Open
Abstract
It has been recently demonstrated that high pre‐treatment levels of miR‐29b positively correlated with the response of patients with acute myeloid leukaemia (AML) to hypomethylating agents. Upmodulation of miR‐29b by restoring its transcriptional machinery appears indeed a tool to improve therapeutic response in AML. In cells from acute promyelocytic leukaemia (APL), miR‐29b is regulated by PU.1, in turn upmodulated by agonists currently used to treat APL. We explored here the ability of PU.1 to also regulate miR‐29b in non‐APL cells, in order to identify agonists that, upmodulating PU.1 may be beneficial in hypomethylating agents‐based therapies. We found that PU.1 may regulate miR‐29b in the non‐APL Kasumi‐1 cells, showing the t(8;21) chromosomal rearrangement, which is prevalent in AML and correlated with a relatively low survival. We demonstrated that the PU.1‐mediated contribution of the 2 miR‐29b precursors is cell‐related and almost completely dependent on adequate levels of Vav1. Nuclear PU.1/Vav1 association accompanies the transcription of miR‐29b but, at variance with the APL‐derived NB4 cells, in which the protein is required for the association of PU.1 with both miRNA promoters, Vav1 is part of molecular complexes to the PU.1 consensus site in Kasumi‐1. Our results add new information on the transcriptional machinery that regulates miR‐29b expression in AML‐derived cells and may help in identifying drugs useful in upmodulation of this miRNA in pre‐treatment of patients with non‐APL leukaemia who can take advantage from hypomethylating agent‐based therapies.
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Affiliation(s)
- Federica Vezzali
- Department of Morphology, Surgery and Experimental Medicine, Section of Anatomy and Histology, University of Ferrara, Ferrara, Italy
| | - Silvia Grassilli
- Department of Morphology, Surgery and Experimental Medicine, Section of Anatomy and Histology, University of Ferrara, Ferrara, Italy
| | - Elisabetta Lambertini
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - Federica Brugnoli
- Department of Morphology, Surgery and Experimental Medicine, Section of Anatomy and Histology, University of Ferrara, Ferrara, Italy
| | - Simone Patergnani
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, University of Ferrara, Ferrara, Italy
| | - Ervin Nika
- Department of Morphology, Surgery and Experimental Medicine, Section of Anatomy and Histology, University of Ferrara, Ferrara, Italy
| | - Roberta Piva
- Department of Biomedical and Specialty Surgical Sciences, University of Ferrara, Ferrara, Italy
| | - Paolo Pinton
- Department of Morphology, Surgery and Experimental Medicine, Section of Pathology, Oncology and Experimental Biology, University of Ferrara, Ferrara, Italy.,Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Silvano Capitani
- Department of Morphology, Surgery and Experimental Medicine, Section of Anatomy and Histology, University of Ferrara, Ferrara, Italy.,Laboratory for Technologies of Advanced Therapies (LTTA), University of Ferrara, Ferrara, Italy
| | - Valeria Bertagnolo
- Department of Morphology, Surgery and Experimental Medicine, Section of Anatomy and Histology, University of Ferrara, Ferrara, Italy
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15
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Brugnoli F, Grassilli S, Lanuti P, Marchisio M, Al-Qassab Y, Vezzali F, Capitani S, Bertagnolo V. Up-modulation of PLC-β2 reduces the number and malignancy of triple-negative breast tumor cells with a CD133 +/EpCAM + phenotype: a promising target for preventing progression of TNBC. BMC Cancer 2017; 17:617. [PMID: 28870198 PMCID: PMC5584040 DOI: 10.1186/s12885-017-3592-y] [Citation(s) in RCA: 18] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 08/22/2017] [Indexed: 01/16/2023] Open
Abstract
Background The malignant potential of triple negative breast cancer (TNBC) is also dependent on a sub-population of cells with a stem-like phenotype. Among the cancer stem cell markers, CD133 and EpCAM strongly correlate with breast tumor aggressiveness, suggesting that simultaneous targeting of the two surface antigens may be beneficial in treatment of TNBC. Since in TNBC-derived cells we demonstrated that PLC-β2 induces the conversion of CD133high to CD133low cells, here we explored its possible role in down-modulating the expression of both CD133 and EpCAM and, ultimately, in reducing the number of TNBC cells with a stem-like phenotype. Methods A magnetic step-by-step cell isolation with antibodies directed against CD133 and/or EpCAM was performed on the TNBC-derived MDA-MB-231 cell line. In the same cell model, PLC-β2 was over-expressed or down-modulated and cell proliferation and invasion capability were evaluated by Real-time cell assays. The surface expression of CD133, EpCAM and CD44 in the different experimental conditions were measured by multi-color flow cytometry immunophenotyping. Results A CD133+/EpCAM+ sub-population with high proliferation rate and invasion capability is present in the MDA-MB-231 cell line. Over-expression of PLC-β2 in CD133+/EpCAM+ cells reduced the surface expression of both CD133 and EpCAM, as well as proliferation and invasion capability of this cellular subset. On the other hand, the up-modulation of PLC-β2 in the whole MDA-MB-231 cell population reduced the number of cells with a CD44+/CD133+/EpCAM+ stem-like phenotype. Conclusions Since selective targeting of the cells with the highest aggressive potential may have a great clinical importance for TNBC, the up-modulation of PLC-β2, reducing the number of cells with a stem-like phenotype, may be a promising goal for novel therapies aimed to prevent the progression of aggressive breast tumors. Electronic supplementary material The online version of this article (10.1186/s12885-017-3592-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Federica Brugnoli
- Signal Transduction Unit, Division of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy
| | - Silvia Grassilli
- Signal Transduction Unit, Division of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy
| | - Paola Lanuti
- Department of Medicine and Aging Science, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Center of Aging Sciences and Translational Medicine (CeSI-MeT), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Marco Marchisio
- Department of Medicine and Aging Science, "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy.,Center of Aging Sciences and Translational Medicine (CeSI-MeT), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - Yasamin Al-Qassab
- Signal Transduction Unit, Division of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy.,College of Medicine, Department of Anatomy, University of Baghdad, Baghdad, Iraq
| | - Federica Vezzali
- Signal Transduction Unit, Division of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy
| | - Silvano Capitani
- Signal Transduction Unit, Division of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy.,LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Valeria Bertagnolo
- Signal Transduction Unit, Division of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara, 70, 44121, Ferrara, Italy.
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Brugnoli F, Grassilli S, Al-Qassab Y, Capitani S, Bertagnolo V. PLC-β2 is modulated by low oxygen availability in breast tumor cells and plays a phenotype dependent role in their hypoxia-related malignant potential. Mol Carcinog 2016; 55:2210-2221. [DOI: 10.1002/mc.22462] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 12/23/2015] [Accepted: 01/06/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Federica Brugnoli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine; University of Ferrara; Ferrara Italy
| | - Silvia Grassilli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine; University of Ferrara; Ferrara Italy
| | - Yasamin Al-Qassab
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine; University of Ferrara; Ferrara Italy
- Department of Anatomy, College of Medicine; University of Baghdad; Baghdad Iraq
| | - Silvano Capitani
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine; University of Ferrara; Ferrara Italy
- LTTA Centre; University of Ferrara; Ferrara Italy
| | - Valeria Bertagnolo
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine; University of Ferrara; Ferrara Italy
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Grassilli S, Brugnoli F, Lattanzio R, Rossi C, Perracchio L, Mottolese M, Marchisio M, Palomba M, Nika E, Natali PG, Piantelli M, Capitani S, Bertagnolo V. High nuclear level of Vav1 is a positive prognostic factor in early invasive breast tumors: a role in modulating genes related to the efficiency of metastatic process. Oncotarget 2015; 5:4320-36. [PMID: 24962430 PMCID: PMC4147326 DOI: 10.18632/oncotarget.2011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [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] [Indexed: 01/04/2023] Open
Abstract
Vav1 is one of the signalling proteins normally restricted to hematopoietic cells that results ectopically expressed in solid tumors, including breast cancer. By immunohistochemical analysis on TMAs containing invasive breast tumor from patients without lymph node involvement, we have found that Vav1 is expressed in almost all investigated cancers and shows a peculiar localization inside the nucleus of tumor cells. High amounts of nuclear Vav1 are positively correlated with low incidence of relapse, regardless phenotype and molecular subtype of breast neoplasia. In particular, Kaplan-Meier plots showed an elevated risk of distant metastasis in patients with low Vav1 expression compared with patients with high Vav1 expression in their tumors. Experiments performed with breast tumor-derived cells indicated that Vav1 negatively modulates their invasiveness in vitro and their metastatic efficiency in vivo, possibly by affecting the expression of genes involved in invasion and/or metastasis of breast tumors. Since the high heterogeneity of breast tumors makes difficult to predict the evolution of early breast neoplasias, the evaluation of nuclear Vav1 levels may help in the characterization and management of early breast cancer patients. In particular, Vav1 may serve as a prognostic biomarker and a target for new therapies aimed to prevent breast cancer progression.
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Affiliation(s)
- Silvia Grassilli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy. These authors contributed equally to this work
| | - Federica Brugnoli
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy. These authors contributed equally to this work
| | - Rossano Lattanzio
- Department of Experimental and Clinical Sciences, University "G. d'Annunzio" Chieti, Italy. Center of Excellence for Research on Aging, Foundation University "G. d'Annunzio", Chieti, Italy
| | - Cosmo Rossi
- Center of Excellence for Research on Aging, Foundation University "G. d'Annunzio", Chieti, Italy. Department of Biomorphology, University "G. D'Annunzio" Chieti, Italy
| | | | | | - Marco Marchisio
- Center of Excellence for Research on Aging, Foundation University "G. d'Annunzio", Chieti, Italy. Department of Biomorphology, University "G. D'Annunzio" Chieti, Italy
| | - Maria Palomba
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Ervin Nika
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | | | - Mauro Piantelli
- Department of Experimental and Clinical Sciences, University "G. d'Annunzio" Chieti, Italy. Center of Excellence for Research on Aging, Foundation University "G. d'Annunzio", Chieti, Italy
| | - Silvano Capitani
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy. LTTA Centre, University of Ferrara, Ferrara, Italy
| | - Valeria Bertagnolo
- Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
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Brugnoli F, Grassilli S, Piazzi M, Palomba M, Nika E, Bavelloni A, Capitani S, Bertagnolo V. In triple negative breast tumor cells, PLC-β2 promotes the conversion of CD133high to CD133low phenotype and reduces the CD133-related invasiveness. Mol Cancer 2013; 12:165. [PMID: 24330829 PMCID: PMC3866498 DOI: 10.1186/1476-4598-12-165] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [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: 06/03/2013] [Accepted: 12/03/2013] [Indexed: 02/04/2023] Open
Abstract
Background Beyond its possible correlation with stemness of tumor cells, CD133/prominin1 is considered an important marker in breast cancer, since it correlates with tumor size, metastasis and clinical stage of triple-negative breast cancers (TNBC), to date the highest risk breast neoplasia. Methods To study the correlation between the levels of CD133 expression and the biology of breast-derived cells, CD133low and CD133high cell subpopulations isolated from triple negative MDA-MB-231 cells were compared in terms of malignant properties and protein expression. Results High expression of CD133 characterizes cells with larger adhesion area, lower proliferation rate and reduced migration speed, indicative of a less undifferentiated phenotype. Conversely, when compared with CD133low cells, CD133high cells show higher invasive capability and increased expression of proteins involved in metastasis and drug-resistance of breast tumors. Among the signalling proteins examined, PLC-β2 expression inversely correlates with the levels of CD133 and has a role in inducing the CD133high cells to CD133low cells conversion, suggesting that, in TNBC cells, the de-regulation of this PLC isoform is responsible of the switch from an early to a mature tumoral phenotype also by reducing the expression of CD133. Conclusions Since CD133 plays a role in determining the invasiveness of CD133high cells, it may constitute an attractive target to reduce the metastatic potential of TNBC. In addition, our data showing that the forced up-regulation of PLC-β2 counteracts the invasiveness of CD133-positive MDA-MB-231 cells might contribute to identify unexplored key steps responsible for the TNBC high malignancy, to be considered for potential therapeutic strategies.
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Affiliation(s)
| | | | | | | | | | | | | | - Valeria Bertagnolo
- Signal Transduction Unit, Section of Anatomy and Histology, Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Fossato di Mortara 70, 44121 Ferrara, Italy.
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Zauli G, Marchisio M, Bertagnolo V, Celeghini C, Capitani S. Hiv-1 tat protein suppresses the nerve growth-factor (ngf)-mediated differentiation of PC12 rat pheochromocytoma cell-line. Oncol Rep 2012; 1:773-7. [PMID: 21607439 DOI: 10.3892/or.1.4.773] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
In order to evaluate the effect of the regulatory human immunodeficiency virus-type 1 (HIV-1) Tat protein on the process of neuronal differentiation, two tat-transfected and mock-transfected PC12 cell lines were cultured in the absence or presence of 100-1000 ng/ml of nerve growth factor (NGF). As expected, NGF was able to induce a clearcut morphological differentiation of mock-transfected PC12 into sympathetic-like neurons, also reducing the percentage of cells in S phase. On the other hand, NGF was unable to reduce the percentage of PC12-tat cells in S phase and/or to induce their neuronal differentiation. Only the addition in culture of 5 mu g/ml neutralizing anti-Tat antibody plus 1000 ng/ml NGF was effective in decreasing the percentage of PC12-tat in S phase and inducing partial signs of neuronal differentiation in serum-free cultures. The ability of Tat protein to suppress the neuronal differentiation pathway controlled by NGF further contribute to the definition of its role in tumor promotion during the course of HTV-1 disease.
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Bertagnolo V, Brugnoli F, Grassilli S, Nika E, Capitani S. Vav1 in differentiation of tumoral promyelocytes. Cell Signal 2011; 24:612-20. [PMID: 22133616 DOI: 10.1016/j.cellsig.2011.11.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 11/08/2011] [Indexed: 02/06/2023]
Abstract
The multidomain protein Vav1, in addition to promote the acquisition of maturation related properties by normal hematopoietic cells, is a key player in the ATRA- and PMA-induced completion of the differentiation program of tumoral myeloid precursors derived from APL. This review is focussed on the role of Vav1 in differentiating promyelocytes, as part of interconnected networks of functionally related proteins ended to regulate different aspects of myeloid maturation. The role of Vav1 in determining actin cytoskeleton reorganization alternative to the best known function as a GEF for small G proteins is discussed, as well as the binding of Vav1 with cytoplasmic and nuclear signaling molecules which provides a new perspective in the modulation of nuclear architecture and activity. In particular, new hints are provided on the ability of Vav1 to determine the nuclear amount of proteins implicated in modulating mRNA production and stability and in regulating the ATRA-dependent protein expression also by direct interaction with transcription factors known to drive the ATRA-induced maturation of myeloid cells. The reviewed findings summarize the major advances in the understanding of additional, non conventional functions connected with the vast interactive potential of Vav1.
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Affiliation(s)
- Valeria Bertagnolo
- Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy.
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21
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Bertagnolo V, Grassilli S, Petretto A, Lambertini E, Astati L, Bruschi M, Brugnoli F, Nika E, Candiano G, Piva R, Capitani S. Nuclear proteome analysis reveals a role of Vav1 in modulating RNA processing during maturation of tumoral promyelocytes. J Proteomics 2011; 75:398-409. [PMID: 21856460 DOI: 10.1016/j.jprot.2011.08.005] [Citation(s) in RCA: 11] [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: 03/24/2011] [Revised: 07/28/2011] [Accepted: 08/06/2011] [Indexed: 01/02/2023]
Abstract
Vav1 is a key molecule in the ATRA-induced acquisition of a mature phenotype by tumoral myeloid precursors. Since ATRA acts throughout events that require extensive changes of nuclear architecture and activity and considering that Vav1 accumulates inside the nuclear compartment of differentiating APL-derived cells, the possible role of this protein in modulating the nuclear proteome was investigated. Membrane-depleted nuclei purified from NB4 cells induced to differentiate with ATRA in the presence of forcedly down-modulated Vav1 were subjected to 2D-DIGE followed by mass spectra analysis. The obtained data demonstrated that, in NB4 cells treated with ATRA, Vav1 is involved in determining the nuclear amount of proteins involved in molecular complexes with DNA and may participate to RNA processing by carrying in the nucleus molecules involved in modulating mRNA production and stability, like hnRNPs and SR proteins. Our results provide the first evidence that, at least in maturation of tumoral myeloid precursors, Vav1 is part of interconnected networks of functionally related proteins ended to regulate different aspects of gene expression. Since defects in mRNA processing are common in tumor development, our data suggest that Vav1 is a potential target molecule for developing new anti-cancer strategies.
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy.
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Bertagnolo V, Grassilli S, D'Aguanno S, Brugnoli F, Bavelloni A, Faenza I, Nika E, Urbani A, Cocco L, Capitani S. Mass spectrometry-based identification of Y745 of Vav1 as a tyrosine residue crucial in maturation of acute promyelocytic leukemia-derived cells. J Proteome Res 2010; 9:752-60. [PMID: 20028078 DOI: 10.1021/pr900581y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Vav1, whose physiological expression is restricted to hematopoietic system, is one of the signaling proteins up-regulated by all-trans retinoic acid (ATRA) in acute promyelocytic leukemia (APL)-derived precursors, in which it promotes the overcoming of the differentiation blockade. High levels of tyrosine phosphorylated Vav1 accumulate in differentiating APL-derived cells, suggesting that one or more Vav1 tyrosine residues are involved in neutrophil differentiation of tumoral promyelocytes. Here, we have found that phosphorylation of Vav1 Y174, that is known to regulate Vav1 activity in mature neutrophils, is up-regulated by ATRA in NB4 cells. Nevertheless, this tyrosine residue does not seem crucial for the agonist-induced phenotypical differentiation of APL-derived cells. Mass spectrometry analysis performed on Vav1 from differentiating NB4 cells allowed to identify the highly conserved Y745 residue as a phosphorylated tyrosine that plays crucial roles in the completion of the maturation program of this cell line. In fact, the overexpression of a mutated form of Vav1, in which Y745 was replaced with a phenylalanine, significantly reduced the ATRA-induced CD11b expression and essentially abrogated the differentiation-related acquisition of the migratory capability. Even though the intracellular signaling involving Vav1 phosphorylated in Y745 is unknown, the identification of a tyrosine residue essential for differentiation of tumoral precursors may constitute the basis to identify new specific targets for differentiation therapy of APL.
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, 44100 Ferrara, Italy
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Bertagnolo V, Grassilli S, Bavelloni A, Brugnoli F, Piazzi M, Candiano G, Petretto A, Benedusi M, Capitani S. Vav1 Modulates Protein Expression During ATRA-Induced Maturation of APL-Derived Promyelocytes: A Proteomic-Based Analysis. J Proteome Res 2008; 7:3729-36. [DOI: 10.1021/pr7008719] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Silvia Grassilli
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Alberto Bavelloni
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Federica Brugnoli
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Manuela Piazzi
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Giovanni Candiano
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Andrea Petretto
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Mascia Benedusi
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
| | - Silvano Capitani
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy, Laboratory of Cell Biology and Electron Microscopy, IOR, Bologna, Italy, Laboratory on Pathophysiology of Uremia, G. Gaslini Children Hospital, Genova, Italy, Mass Spectrometry Core Facility, G. Gaslini Children Hospital, Genova, Italy, MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
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Lanuti P, Bertagnolo V, Gaspari AR, Ciccocioppo F, Pierdomenico L, Bascelli A, Sabatino G, Miscia S, Marchisio M. Parallel regulation of PKC-alpha and PKC-delta characterizes the occurrence of erythroid differentiation from human primary hematopoietic progenitors. Exp Hematol 2007; 34:1624-34. [PMID: 17157158 DOI: 10.1016/j.exphem.2006.07.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2006] [Revised: 07/13/2006] [Accepted: 07/24/2006] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Erythroid differentiation is a process characterized by modulation of different proteins including phosphoinositide-related enzymes such as protein kinase C (PKC) isoforms. Because in different cell lines PKC-alpha and PKC-delta have been reported to be involved in the mechanisms controlling proliferation and differentiation, the aim of this study was to examine the relative involvement of these PKC isoforms in the development of CD235a+ erythroid cells from human healthy hematopoietic progenitors. MATERIALS AND METHODS Erythroid differentiation from human primary hematopoietic progenitor cells was achieved by adopting the human erythroblasts mass amplification culture. Expression and activity of PKC isoforms and their relationship with proliferation and differentiation were investigated by morphologic analysis, reverse-transcriptase polymerase chain reaction, Western blotting, multiparametric flow cytometry, and transfection experiments. RESULTS PKC-alpha was found expressed and phosphorylated in cells undergoing both proliferation and differentiation, although PKC-delta, largely expressed and activated during proliferation, was evidently downregulated during differentiation. Overexpression of PKC-delta-CAT scarcely influenced the development of glycophorin-A (CD235a)+ erythroid cells from hematopoietic progenitors, although overexpression of PKC-alpha-CAT strongly induced the development of CD235a+ erythroid cells. On the other hand, in PKC-alpha-CAT-transfected cells, pharmacologic inhibition of PKC-delta further increased the number of CD235a+ cells, although inhibition of PKC-alpha resulted in an evident impairment of the development of CD235a+ erythroid cells. CONCLUSIONS Our results indicate that the suppression or at least a strong downregulation of PKC-delta, concomitant to PKC-alpha expression and activity, might be a cofactor to be further investigated and might be involved in the events regulating erythropoietin-induced erythroid differentiation from human primary hematopoietic progenitor cells.
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Affiliation(s)
- Paola Lanuti
- Cell Signalling Unit, Section of Human Anatomy, Department of Biomorphology, University G. d'Annunzio of Chieti-Pescara, Chieti, Italy
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25
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Bertagnolo V, Benedusi M, Brugnoli F, Lanuti P, Marchisio M, Querzoli P, Capitani S. Phospholipase C-β2 promotes mitosis and migration of human breast cancer-derived cells. Carcinogenesis 2007; 28:1638-45. [PMID: 17429106 DOI: 10.1093/carcin/bgm078] [Citation(s) in RCA: 47] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Like most human neoplasm, breast cancer has aberrations in signal transduction elements that can lead to increased proliferative potential, apoptosis inhibition, tissue invasion and metastasis. Due to the high heterogeneity of this tumor, currently, no markers are clearly associated with the insurgence of breast cancer, as well as with its progression from in situ lesion to invasive carcinoma. We have recently demonstrated an altered expression of the beta2 isoform of the phosphoinositide-dependent phospholipase C (PLC) in invasive breast tumors with different histopathological features. In primary breast tumor cells, elevated amounts of this protein are closely correlated with a poor prognosis of patients with mammary carcinoma, suggesting that PLC-beta2 may be involved in the development and worsening of the malignant phenotype. Here we demonstrate that PLC-beta2 may improve some malignant characteristics of tumor cells, like motility and invasion capability, but it fails to induce tumorigenesis in non-transformed breast-derived cells. We also report that, compared with the G(0)/G(1) phases of the cell cycle, the cells in S/G(2)/M phases show high PLC-beta2 expressions that reach the greatest levels during the late mitotic stages. In addition, even if unable to modify the proliferation rate and the expression of cell cycle-related enzymes of malignant cells, PLC-beta2 may promote the G(2)/M progression, a critical event in cancer evolution. Since phosphoinositides, substrates of PLC, are involved in regulating cytoskeleton architecture, PLC-beta2 in breast tumor cells may mediate the modification of cell shape that characterizes cell division, motility and invasion. On the basis of these data, PLC-beta2 may constitute a molecular marker of breast tumor cells able to monitor the progression to invasive cancers and a target for novel therapeutic breast cancer strategies.
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit, Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University "G. d'Annunzio" Chieti-Pescara, Chieti, Italy
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26
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Brugnoli F, Bavelloni A, Benedusi M, Capitani S, Bertagnolo V. PLC-beta2 activity on actin-associated polyphosphoinositides promotes migration of differentiating tumoral myeloid precursors. Cell Signal 2007; 19:1701-12. [PMID: 17478077 DOI: 10.1016/j.cellsig.2007.03.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 03/09/2007] [Accepted: 03/10/2007] [Indexed: 10/23/2022]
Abstract
During both maturation and function, neutrophils are subjected to reorganization of the actin cytoskeleton. Among the molecules that influence cytoskeletal architecture, the amount and subcellular localization of phosphoinositides, regulated by specific kinases and phosphatases, may play a crucial role. In neutrophils, PLC-beta2 is a major phosphoinositide-dependent phospholipase C isoform activated in response to chemoattractants, even though its role in the modifications of cell morphology and motility that occur during the inflammatory process has not been fully elucidated. In APL-derived promyelocytes induced to complete their maturation program, we have found that the expression levels of PLC-beta2 positively correlate with the degree of the reached neutrophil differentiation. Here, we demonstrate that PLC-beta2 modulates the migration capability of promyelocytes induced to differentiate with ATRA. In differentiating cells, the association of PLC-beta2 with actin, mediated by the PH domain, seems crucial for catalytic activity. We conclude that phosphodiesterase activity of PLC-beta2 on the actin-associated PIP2 may be responsible, by modifying the phosphoinositide pools, for the modifications of cytoskeleton architecture that take place during motility of differentiating promyelocytes.
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Affiliation(s)
- Federica Brugnoli
- Signal Transduction Unit, Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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Marchisio M, Bertagnolo V, Lanuti P, Gaspari AR, Paludi M, Ciccocioppo F, Ercolino E, Bascelli A, Cataldi A, Miscia S. Nuclear protein kinase C-delta: a possible check-point of cell cycle progression. Int J Immunopathol Pharmacol 2006; 19:287-91. [PMID: 16831296 DOI: 10.1177/039463200601900206] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Protein kinase Cs (PKCs) belong to a serine/threonine kinase family, ubiquitously expressed and claimed to be involved in physiological processes including apoptosis, cell growth and differentiation. The question of the subcellular localization and activity of PKCs remains to be clarified. Here we report that nuclear PKC-delta cooperates to regulate the S-G2/M phase transition of cell cycle, apparently being associated to chromosome condensation and alignment on the metaphase plate.
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Affiliation(s)
- M Marchisio
- Cell Signalling Unit at the Department of Biomorphology, University of Chieti-Pescara, Italy
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Lanuti P, Marchisio M, Cantilena S, Paludi M, Bascelli A, Gaspari AR, Grifone G, Centurione MA, Papa S, Di Pietro R, Cataldi A, Miscia S, Bertagnolo V. A flow cytometry procedure for simultaneous characterization of cell DNA content and expression of intracellular protein kinase C-zeta. J Immunol Methods 2006; 315:37-48. [PMID: 16945385 DOI: 10.1016/j.jim.2006.06.015] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2006] [Revised: 06/15/2006] [Accepted: 06/26/2006] [Indexed: 02/05/2023]
Abstract
A selective involvement of protein kinase C-zeta (PKC-zeta) in the events regulating cell proliferation has been recently proposed. Here we report a flow cytometric method allowing the simultaneous association of intracellular PKC-zeta expression or phosphorylation with each cell cycle phase. Current methods for flow cytometry analysis were applied to several cell lines and compared to the method developed in our laboratory. The latter includes 2% paraformaldehyde (PFA), as fixing agent, a permeabilization/saturation step by means of a solution containing 150 mM NaCl, 5 mM EDTA, 50 mM Tris-HCl pH 7.4, 0.05% NP-40, 0.25% lambda-carrageenan and 0.02% NaN3, followed by labelling with a primary antibody (PKC-zeta or P-PKC-zeta) and with the appropriate FITC-conjugated secondary antibody. Cells processed by such a method disclosed no substantial modification of light scattering features with respect to live cells. In addition, stainability with anti-PKC-zeta or anti-P-PKC-zeta antibodies was well preserved while stoichiometric staining of DNA with PI enabled accurate cell cycle analysis. Results show that a distinct up-regulation of P-PKC-zeta in G2/M phase occurs. The method here described, therefore, represents a simple, reproducible and conservative assay for a simultaneous assessment of intracellular PKC or P-PKC modulations within each cell cycle phase.
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Affiliation(s)
- Paola Lanuti
- Cell Signalling Unit at the Department of Biomorphology, University G. d'Annunzio Chieti-Pescara, Chieti, Italy
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Matkovic K, Brugnoli F, Bertagnolo V, Banfic H, Visnjic D. The role of the nuclear Akt activation and Akt inhibitors in all-trans-retinoic acid-differentiated HL-60 cells. Leukemia 2006; 20:941-51. [PMID: 16617325 DOI: 10.1038/sj.leu.2404204] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.7] [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: 01/18/2023]
Abstract
The pharmacological inhibitors of phosphoinositide 3-kinase (PI3K)/Akt pathway have been proposed in the treatment of leukemia based on their antiproliferative effects. However, several studies demonstrated the activation of PI3K in the nuclei of all-trans-retinoic acid (ATRA) - differentiated HL-60 cells, raising the possibility that PI3K/Akt-inhibitors may block antitumor properties of retinoids. The aim of the present study was to investigate the possible activation of nuclear Akt in ATRA-treated cells and to test the effects of Akt-inhibitors on ATRA-mediated differentiation. The Akt-activity was found to be increased in the nuclei and lysates of ATRA-differentiated HL-60 and NB4 cells. The down-modulation of the expression of Akt protein in HL-60 cells using siRNA reduces the CD11b expression in ATRA-treated cells. The treatment of both cell lines with the commercially available Akt inhibitors inhibited the growth of both control and ATRA-treated cells. Akt-inhibitors had no inhibitory effects on ATRA-mediated growth arrest and the expression of CD11b in HL-60 cells, but increased the percentage of control cells expressing CD11b. In contrast, the presence of Akt inhibitors reduced the expression of CD11b in ATRA-treated NB4 cells.
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Affiliation(s)
- K Matkovic
- Department of Physiology and Croatian Institute for Brain Research, School of Medicine, University of Zagreb, Zagreb, Croatia
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Bertagnolo V, Benedusi M, Querzoli P, Pedriali M, Magri E, Brugnoli F, Capitani S. PLC-β2 is highly expressed in breast cancer and is associated with a poor outcome: a study on tissue microarrays. Int J Oncol 2006. [DOI: 10.3892/ijo.28.4.863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Bertagnolo V, Benedusi M, Querzoli P, Pedriali M, Magri E, Brugnoli F, Capitani S. PLC-beta2 is highly expressed in breast cancer and is associated with a poor outcome: a study on tissue microarrays. Int J Oncol 2006; 28:863-72. [PMID: 16525635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023] Open
Abstract
Despite the identification of many putative biomarkers in breast cancer, a specific pattern of proteins to be used as a prognosticator is not well defined. A growing body of evidence supports the role of phospholipase C (PLC) in the invasion and metastasis of different tumors, including breast cancer. To assess whether the expression of specific PLC isoforms correlates with malignancy-related features of human breast tumors and, hence, could have prognostic significance, an immunohistochemical analysis of PLC-beta2 was performed on tissue microarrays and the relationship between PLC-beta2 expression and biological and clinico-pathological factors was assessed. The analysis of 77 samples of breast tumors with different histotypes revealed that PLC-beta2 is highly expressed in a large majority of the analyzed cancer tissue, particularly ductal and lobular carcinomas, in comparison with normal breast. The expression of PLC-beta2 in primary tumors correlated with size, proliferation index and final grade, while no significant relationship was observed with nodal status or estrogen receptor levels, or with the expression of tumor suppressor p53. Remarkably, high PLC-beta2 levels in primary tumors predict an unfavourable prognosis, suggesting the contribution of this protein to the progression of human mammary carcinomas. Our data indicate that PLC-beta2 expression correlates highly with breast cancer malignancy and suggest that it can be included, as an independent marker, among the prognostic indicators in current use.
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit, Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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Brugnoli F, Bovolenta M, Benedusi M, Miscia S, Capitani S, Bertagnolo V. PLC-β2 monitors the drug-induced release of differentiation blockade in tumoral myeloid precursors. J Cell Biochem 2006; 98:160-73. [PMID: 16408290 DOI: 10.1002/jcb.20749] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/06/2022]
Abstract
The differentiation therapy in treatment of acute promyelocytic leukemia (APL), based on the administration of all-trans retinoic acid (ATRA), is currently flanked with the use of As2O3, a safe and effective agent for patients showing a resistance to ATRA treatment. A synergy between ATRA and As3O3 was also reported in inducing granulocytic differentiation of APL-derived cells. We have demonstrated that phospholipase C-beta2 (PLC-beta2), highly expressed in neutrophils and nearly absent in tumoral promyelocytes, largely increases during ATRA treatment of APL-derived cells and strongly correlates with the responsiveness of APL patients to ATRA-based differentiating therapies. Here we report that, in APL-derived cells, low doses of As3O3 induce a slight increase of PLC-beta2 together with a moderate maturation, and cooperate with ATRA to provoke a significant increase of PLC-beta2 expression. Remarkably, the amounts of PLC-beta2 draw a parallel with the differentiation levels reached by both ATRA-responsive and -resistant cells treated with ATRA/As2O3 combinations. PLC-beta2 is not necessary for the progression of tumoral promyelocytes along the granulocytic lineage and is unable to overcome the differentiation block or to potentiate the agonist-induced maturation. On the other hand, since its expression closely correlates with the differentiation level reached by APL-derived cells induced to maturate by drugs presently employed in APL therapies, PLC-beta2 represents indeed a specific marker to test the ability of differentiation agents to induce the release of the maturation blockade of tumoral myeloid precursors.
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Affiliation(s)
- Federica Brugnoli
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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Bertagnolo V, Brugnoli F, Mischiati C, Sereni A, Bavelloni A, Carini C, Capitani S. Vav promotes differentiation of human tumoral myeloid precursors. Exp Cell Res 2005; 306:56-63. [PMID: 15878332 DOI: 10.1016/j.yexcr.2004.12.001] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2004] [Revised: 11/30/2004] [Accepted: 12/04/2004] [Indexed: 11/28/2022]
Abstract
Vav is one of the genetic markers that correlate with the differentiation of hematopoietic cells. In T and B cells, it appears crucial for both development and functions, while, in non-lymphoid hematopoietic cells, Vav seems not involved in cell maturation, but rather in the response of mature cells to agonist-dependent proliferation and phagocytosis. We have previously demonstrated that the amount and the tyrosine phosphorylation of Vav are up-regulated in both whole cells and nuclei of tumoral promyelocytes induced to granulocytic maturation by ATRA and that tyrosine-phosphorylated Vav does not display any ATRA-induced GEF activity but contributes to the regulation of PI 3-K activity. In this study, we report that Vav accumulates in nuclei of ATRA-treated APL-derived cells and that the down-modulation of Vav prevents differentiation of tumoral promyelocytes, indicating that it is a key molecule in ATRA-dependent myeloid maturation. On the other hand, the overexpression of Vav induces an increased expression of surface markers of granulocytic differentiation without affecting the maturation-related changes of the nuclear morphology. Consistent with an effect of Vav on the transcriptional machinery, array profiling shows that the inhibition of the Syk-dependent tyrosine phosphorylation of Vav reduces the number of ATRA-induced genes. Our data support the unprecedented notion that Vav plays crucial functions in the maturation process of myeloid cells, and suggest that Vav can be regarded as a potential target for the therapeutic treatment of myeloproliferative disorders.
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MESH Headings
- Cell Cycle Proteins/genetics
- Cell Cycle Proteins/metabolism
- Cell Cycle Proteins/physiology
- Cell Differentiation/physiology
- Cell Line, Tumor
- Enzyme Inhibitors/pharmacology
- Gene Expression/drug effects
- Gene Expression/genetics
- Gene Expression/physiology
- Gene Expression Regulation, Leukemic/drug effects
- Granulocytes/physiology
- HL-60 Cells
- Humans
- Leukemia, Promyelocytic, Acute/genetics
- Leukemia, Promyelocytic, Acute/metabolism
- Leukemia, Promyelocytic, Acute/pathology
- Myeloid Progenitor Cells/drug effects
- Myeloid Progenitor Cells/metabolism
- Myeloid Progenitor Cells/pathology
- Phosphorylation
- Protein-Tyrosine Kinases/antagonists & inhibitors
- Protein-Tyrosine Kinases/metabolism
- Proto-Oncogene Proteins/genetics
- Proto-Oncogene Proteins/metabolism
- Proto-Oncogene Proteins/physiology
- Proto-Oncogene Proteins c-vav
- RNA, Small Interfering/genetics
- Stilbenes/pharmacology
- Transfection
- Tretinoin/pharmacology
- Tumor Cells, Cultured
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Via Fossato di Mortara, 66, 44100 Ferrara, Italy
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Bertagnolo V, Brugnoli F, Marchisio M, Capitani S. Inositide-modifying enzymes: a cooperative role in regulating nuclear morphology during differentiation of myeloid cells. J BIOL REG HOMEOS AG 2004; 18:381-6. [PMID: 15786708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Differentiation and functional response of mature myeloid cells require cytoskeleton remodelling in a dynamic system that involves subcellular organization and regional signalling. Within the myeloid lineage, neutrophils constitute a cell type in which different cell compartments, and predominantly the nucleus, undergo distinctive large changes involving actin reorganization. In the context of the progressive elucidation of the nuclear structure and composition that has been achieved in the last two decades, it is now clear that the nucleus possesses an ordered and dynamic skeletal structure which shares many properties with the cytoskeleton, and the full set of substrates and enzymes that participate in the inositol lipid metabolism. Consolidated evidence indicate that the changes in cytoskeleton assembly are regulated also by phosphoinositides in a way dependent on their local concentration and availability. Indeed, enzymes able to affect the amount and phosphorylation of inositol lipids can play fundamental roles in determining the architectural transitions of the cell. The expression pattern and the changes of activity of PLC and PI 3-K in the nucleus during differentiation of tumoral myeloid precursors suggest that these enzymes play a crucial role in modifying the intranuclear pool of phosphoinositides, which in turn induce the changes in nucleoskeleton associated to granulocytic maturation. It can be speculated that defective control of nucleoskeleton assembly is one of the causes of dysregulated cell maturation or differentiative block in the course of myeloid leukemias. Inositide modifying enzymes can thus be regarded as potential targets for molecularly designed therapeutic intervention on hematological malignancies.
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Affiliation(s)
- V Bertagnolo
- Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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Stabellini G, Brugnoli F, Calastrini C, Vizzotto L, Vertemati M, Baroni T, Caramelli E, Marinucci L, Pellati A, Bertagnolo V. Ornithine decarboxylase, polyamines and CD11b expression in HL-60 cells during differentiation induced by retinoic acid. Biomed Pharmacother 2004; 58:401-6. [PMID: 15271423 DOI: 10.1016/j.biopha.2003.12.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2003] [Accepted: 12/05/2003] [Indexed: 10/26/2022] Open
Abstract
Polyamines (PA) and retinoic acid affect mammalian cell growth, differentiation and apoptosis. Retinoic acid induces granulocytic differentiation of mieloid cell lines and, during this process, is responsible for the expression of CD11b, a surface antigen. In this study we investigate the effects of retinoic acid on HL-60 cells, monitoring ornithine decarboxylase (ODC) activity (enzyme rate of PA), putrescine (PUT), spermidine (SPD), spermine (SPM) levels, CD11b myeloid surface marker differentiation, cell cycle, and apoptosis. ODC activity and PUT levels are correlated with mieloid cell differentiation induced by retinoic acid treatment. Only the ODC/PUT ratio is connected with retinoic acid treated HL-60 cells. Treated cultures show a decrease of proliferation and a cell block in the G0/G1 phase, with consequent diminished S phase. The G0/G1 and S phases are significantly related to ODC activity and to PUT and SPD behavior, whereas in differentiating condition only the decrease of PUT is related to the S phase. CD11b expression, stimulated by retinoic acid treatment, is associated with the SPM trend. Total PA behavior agrees with apoptotic cell increase after 96 h of stimulation. Our data show that retinoic acid treatment modifies ODC activity and the turnover of PA. PUT, SPD and SPM, therefore, have a different role, and may be involved in the differentiative/apoptotic program of retinoic acid treated HL-60 cells.
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Affiliation(s)
- Giordano Stabellini
- Human Morphology Department, LITA of Segrate, State University of Milan, Via Mangiagalli 31, 20133, Italy.
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Bertagnolo V, Brugnoli F, Marchisio M, Celeghini C, Carini C, Capitani S. Association of PI 3-K with tyrosine phosphorylated Vav is essential for its activity in neutrophil-like maturation of myeloid cells. Cell Signal 2004; 16:423-33. [PMID: 14709332 DOI: 10.1016/j.cellsig.2003.09.013] [Citation(s) in RCA: 31] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The importance of the Vav family of signal transduction molecules in hematopoietic cells has long been acknowledged, even though its role and its regulatory mechanism are not completely understood. We have previously demonstrated that tyrosine-phosphorylated Vav, also located inside the nucleus of myeloid cells, is up-regulated during maturation of promyelocytic precursors induced by all-trans-retinoic acid (ATRA). Here, we report that the tyrosine phosphorylation of Vav during granulocytic maturation is dependent on the tyrosine kinase Syk and is essential for the morphological changes of the cell nucleus. These ATRA-induced events are independent on the guanine nucleotide exchange activity of Vav. We also found that, in differentiating cells, and in both cytoplasmic and nuclear compartments, tyrosine phosphorylated Vav associates with the regulatory subunit of phosphoinositide 3-kinase (PI 3-K). The Vav/p85 interaction is essential for the ATRA-induced PI 3-K activity and for association of PI 3-K with actin, particularly in the nucleus. Our data indicate an unprecedented crucial function for Vav in modulating the morphological maturation process of myeloid cells in a GDP-GTP exchange factor (GEF)-independent manner and suggest a role of Vav as an adaptor protein responsible of targeting PI 3-K to its intranuclear substrates.
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit, Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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Bertagnolo V, Puviani AC, Brogli M, Carini C, Brugnoli F, Colamussi ML, Bellini G, Morsiani E, Capitani S. Retinoic acid maintains differentiated cell morphology and functions in long-term cultured porcine hepatocytes: obtaining functional cells for prolonged treatments with bioartificial liver. Int J Artif Organs 2003; 26:498-506. [PMID: 12866655 DOI: 10.1177/039139880302600608] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/16/2022]
Abstract
Porcine hepatocytes show several immunological characteristics and enzymatic activities of human liver, representing an ideal xenogenic source of cells as biological component of bioartificial liver (BAL). Isolated hepatocytes rapidly lose their specific metabolic activities and their typical morphology when cultured in the presence of serum. Since in BAL porcine hepatocytes are perfused by the patient's plasma, procedures able to minimize de-differentiation of cells could be useful for long-term treatment of acute liver failure (ALF). In this work we found that, in the presence of micromolar concentration of All trans-retinoic acid (ATRA), porcine parenchymal liver cells undergo to a lower extent the de-differentiating effects of long-term culture in the presence of serum. The evaluation of lidocaine metabolism showed that ATRA-treated cells retain specific hepatocyte function for a significantly longer time when compared to control hepatocytes. A tyrosine phosphorylation of PLC-gamma1 was observed in concomitance with the ATRA-induced maximal functional activity. An increased expression of PLC-beta3 and PKC-alpha and -beta2 was also evidentiated at the longer time points explored, when the effects of ATRA in preservation of the differentiated morphology were maximal. These results provide the first evidence that ATRA plays a differentiating role in adult porcine hepatocytes cultured under de-differentiating conditions. The administration of ATRA to isolated parenchymal cells from pig liver may provide functional hepatocytes for prolonged treatment with BAL.
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Affiliation(s)
- V Bertagnolo
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Ferrara, Italy
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Bertagnolo V, Marchisio M, Pierpaoli S, Colamussi ML, Brugnoli F, Visani G, Zauli G, Capitani S. Selective up-regulation of phospholipase C-beta2 during granulocytic differentiation of normal and leukemic hematopoietic progenitors. J Leukoc Biol 2002; 71:957-65. [PMID: 12050180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023] Open
Abstract
In this study, we have investigated the expression of phospholipase C-beta2 during the course of granulocytic differentiation of normal and malignant progenitors. As a model system, we used the NB4 cell line, a reliable in vitro model for the study of acute promyelocytic leukemia (APL), a variety of acute myeloid leukemia (AML) that responds to pharmacological doses of all trans-retinoic acid (ATRA) by differentiating in a neutrophil-like manner. We found that PLC-beta2, virtually absent in untreated NB4 cells, was strongly up-regulated after ATRA-induced granulocytic differentiation. Remarkably, using primary blasts purified from bone marrow of patients affected by APL successfully induced to remission by treatment with ATRA, we showed a striking correlation between the amount of PLC-beta2 expression and the responsiveness of APL blasts to the differentiative activity of ATRA. An increase of PLC-beta2 expression also characterized the cytokine-induced granulocytic differentiation of CD34+ normal hematopoietic progenitors. Taken together, these data show that PLC-beta2 represents a sensitive and reliable marker of neutrophil maturation of normal and malignant myeloid progenitors. Moreover, PLC-beta2 levels can predict the in vivo responsiveness to ATRA of APL patients.
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Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, Italy
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Bertagnolo V, Marchisio M, Pierpaoli S, Colamussi ML, Brugnoli F, Visani G, Zauli G, Capitani S. Selective up‐regulation of phospholipase C‐β2 during granulocytic differentiation of normal and leukemic hematopoietic progenitors. J Leukoc Biol 2002. [DOI: 10.1189/jlb.71.6.957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Valeria Bertagnolo
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, and Italy
| | - Marco Marchisio
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, and Italy
- Department of Biomorphology, University “G.D’Annunzio”, Chieti, Italy
- Department of Pathology, Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Sabina Pierpaoli
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, and Italy
| | - Maria Luisa Colamussi
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, and Italy
| | - Federica Brugnoli
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, and Italy
| | - Giuseppe Visani
- L.A. Seragnoli Institute of Haematology, University of Bologna, Italy; and
| | - Giorgio Zauli
- Department of Normal Human Morphology, University of Trieste, Italy
| | - Silvano Capitani
- Signal Transduction Unit/Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, and Italy
- MIUR ICSI (Interdisciplinary Center for the Study of Inflammation), University of Ferrara, Italy
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Caselli M, Marchisio M, Gaudio M, Saragoni L, Lanza G, Alvisi V, Bertagnolo V, Concu M, Capitani S, Caramelli E. Fhit protein expression in human gastric cancer and related precancerous lesions. Oncol Rep 2001; 8:1233-7. [PMID: 11605039 DOI: 10.3892/or.8.6.1233] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/06/2022] Open
Abstract
The FHIT gene is altered in several types of tumors and abnormal expression of Fhit protein have also been reported in some preneoplastic lesions. We have determined the Fhit expression on histological samples of 26 patients affected by preneoplastic lesions who developed a gastric cancer within 2 years. The expression of the Fhit protein was always present in all preneoplastic lesions, while the Fhit protein immunostaining was distributed unevenly in 10 cases and completely lost in 6. The complete loss of Fhit expression only in areas of neoplastic low differentiation suggests that FHIT gene takes part in late gastric carcinogenesis.
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Affiliation(s)
- M Caselli
- Institute of Internal Medicine I, University of Ferrara, Ferrara, Italy
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Bertagnolo V, Marchisio M, Brugnoli F, Bavelloni A, Boccafogli L, Colamussi ML, Capitani S. Requirement of tyrosine-phosphorylated Vav for morphological differentiation of all-trans-retinoic acid-treated HL-60 cells. Cell Growth Differ 2001; 12:193-200. [PMID: 11331248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Our previous data demonstrated that cellular and nuclear tyrosine-phosphorylated Vav associate with phosphoinositide 3-kinase during all-trans-retinoic acid-dependent granulocytic differentiation of HL-60 cells. In this study, aimed to analyze the mechanism by which Vav is recruited and activated, we report that the Src homology 2 domain of Vav interacts with tyrosine-phosphorylated proteins in a differentiation-dependent manner. Two adaptor proteins, Cbl and SLP-76, were identified, showing a discrete distribution inside the cells, with Cbl absent from the nuclei and SLP-76 particularly abundant in the nuclear compartment. Of note, Vav interacts with the tyrosine kinase Syk, which is also present in the nuclear compartment and may phosphorylate Vav in vitro when cells differentiate. Inhibition of Syk activity by piceatannol prevents both in vitro and in vivo Vav tyrosine phosphorylation, its association with the regulatory subunit of phosphoinositide 3-kinase, and the nuclear modifications typically observed during granulocytic differentiation of this cell line. These findings suggest that tyrosine-phosphorylated Vav and its association with phosphoinositide 3-kinase play a crucial role in all-trans-retinoic acid-induced reorganization of the nucleoskeleton, which is responsible for the changes in nuclear morphology observed during granulocytic differentiation of HL-60 cells.
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Affiliation(s)
- V Bertagnolo
- Signal Transduction Unit-Laboratory of Cell Biology, Section of Human Anatomy, Department of Morphology and Embryology, University of Ferrara, 44100 Ferrara, Italy
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Capitani S, Marchisio M, Neri LM, Brugnoli F, Gonelli A, Bertagnolo V. Phosphoinositide 3-kinase is associated to the nucleus of HL-60 cells and is involved in their ATRA-induced granulocytic differentiation. Eur J Histochem 2000; 44:61-5. [PMID: 10868294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023] Open
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Neri LM, Marchisio M, Colamussi ML, Bertagnolo V. Monocytic differentiation of HL-60 cells is characterized by the nuclear translocation of phosphatidylinositol 3-kinase and of definite phosphatidylinositol-specific phospholipase C isoforms. Biochem Biophys Res Commun 1999; 259:314-20. [PMID: 10362505 DOI: 10.1006/bbrc.1999.0786] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [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: 11/22/2022]
Abstract
Immunochemical and immunocytochemical data indicate that nuclei of HL-60 cells contain different enzymes involved in the phosphoinositide cycle, such as PI 3-K and the phosphatidylinositol-specific PLC isoforms beta3, gamma1 and gamma2. These enzymes translocate differently to the nuclear fraction when HL-60 cells are treated with differentiating doses of vitamin D3: PI 3-K translocated progressively to the nucleus in parallel with full differentiation until 96 hours. PLC beta3 increased until 72 hours of treatment and then lowered its intranuclear amount and PLC gamma1 was unchanged at all the examined times. PLC gamma2 nuclear translocation increased progressively until 96 hours of vitamin D3 administration. A fourth PLC isozyme, beta2, present in the cytoplasm of untreated cells, translocates to the cytoplasm after vitamin D3 addition and reaches the highest concentration at the end of monocytic differentiation. Terminal monocytic differentiation was characterized at the nuclear level by high levels of PI 3-K and PLC gamma2 and by the novel expression of PLC beta2. We then observed that the xi isoform of PKC, constitutively present in nuclei of HL-60 cells, translocated to the nucleus when cells were induced to differentiate along the monocytic lineage, but the nuclear translocation of PKC xi was blocked as a consequence of PI 3-K inhibition by Wortmannin. These findings indicate that the main components of the noncanonical and canonical inositol lipid signal transduction pathways, including PI 3-K, PLC beta2 and beta3, PLC gamma2, undergo nuclear translocation and may therefore play a relevant role during monocytic differentiation at the nuclear level. Furthermore, PKC xi nuclear translocation appears to be related to PI 3-K activity.
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Affiliation(s)
- L M Neri
- Section of Human Anatomy, University of Ferrara, Ferrara, Italy.
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Marchisio M, Bertagnolo V, Celeghini C, Vitale M, Capitani S, Zauli G. Selective modulation of specific protein kinase C (PKC) isoforms in primary human megakaryocytic vs. erythroid cells. Anat Rec (Hoboken) 1999; 255:7-14. [PMID: 10321988 DOI: 10.1002/(sici)1097-0185(19990501)255:1<7::aid-ar2>3.0.co;2-t] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We have investigated the pattern of expression of classical (alpha, betaI, betaII, gamma), novel (delta) and atypical (zeta) protein kinase C (PKC) isoforms during the course of human hematopoietic differentiation along the closely related megakaryocytic and erythroid lineages. Using in situ immunofluorescence analysis, freshly isolated human pluripotent CD34+ hematopoietic progenitor cells expressed detectable amounts of all the PKC isoforms investigated. On the other hand, clear-cut differences in terms of PKC staining were noticed between cells belonging to the erythroid and megakaryocytic lineages, obtained after 9 days of serum-free liquid culture in the presence of specific growth factors. Specifically, 1) erythroid cells showed a very weak expression of PKC-alpha, -betaI, -betaII, and -gamma, while megakaryocytes showed an enhanced expression of all classical PKC isoforms, predominantly confined to the cytoplasm; 2) the expression of PKC-delta increased in the cytoplasmic and nuclear compartments of both erythroid and megakaryocytic cells with respect to CD34+ cells; and 3) atypical PKC-zeta isoform showed a striking accumulation in the nucleus during both erythroid and megakaryocytic differentiation.
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Affiliation(s)
- M Marchisio
- Department of Morphology and Embryology, University of Ferrara, Italy
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Bertagnolo V, Neri LM, Marchisio M, Mischiati C, Capitani S. Phosphoinositide 3-kinase activity is essential for all-trans-retinoic acid-induced granulocytic differentiation of HL-60 cells. Cancer Res 1999; 59:542-6. [PMID: 9973197] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Phosphoinositide 3-kinase (PI 3-K) activity increases in HL-60 cells that are induced to granulocytic differentiation by all-trans-retinoic acid. Immunochemical and immunocytochemical analyses by confocal microscopy also reveal an increase in the amount of the enzyme, which is particularly evident at the nuclear level. Inhibition of PI 3-K activity by nanomolar concentrations of wortmannin and of its expression by transfection with an antisense fragment of p85alpha prevented the differentiative process. The data obtained indicate that PI 3-K activity plays an essential role in promoting granulocytic differentiation.
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Affiliation(s)
- V Bertagnolo
- Department of Morphology and Embryology, University of Ferrara, Italy
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Bertagnolo V, Marchisio M, Volinia S, Caramelli E, Capitani S. Nuclear association of tyrosine-phosphorylated Vav to phospholipase C-gamma1 and phosphoinositide 3-kinase during granulocytic differentiation of HL-60 cells. FEBS Lett 1998; 441:480-4. [PMID: 9891995 DOI: 10.1016/s0014-5793(98)01593-2] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.7] [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: 11/18/2022]
Abstract
The granulocytic differentiation of HL-60 cells induced by all-trans retinoic acid was accompanied by a progressive tyrosine phosphorylation of specific proteins in either cells or isolated nuclei. Among these phosphoproteins, we identified the Vav adaptor in whole cells as well as in the inner nuclear compartment, where the increase in its tyrosine phosphorylation level was more conspicuous. We also demonstrated the differentiation-dependent association of nuclear phosphorylated Vav to phospholipase C-gamma1 and to the p85 regulatory subunit of phosphoinositide 3-kinase. The role of the Vav/phospholipase C-gamma1/phosphoinositide 3-kinase phosphoprotein complexes in the nuclei of HL-60 induced to differentiate along the granulocytic lineage is discussed.
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Affiliation(s)
- V Bertagnolo
- Department of Morphology and Embryology, University of Ferrara, Italy
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Marchisio M, Bertagnolo V, Colamussi ML, Capitani S, Neri LM. Phosphatidylinositol 3-kinase in HL-60 nuclei is bound to the nuclear matrix and increases during granulocytic differentiation. Biochem Biophys Res Commun 1998; 253:346-51. [PMID: 9878540 DOI: 10.1006/bbrc.1998.9787] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.9] [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: 11/22/2022]
Abstract
We have used HL-60 leukemia cells to investigate phosphatidylinositol 3-kinase (PI 3-K) during granulocytic differentiation at the nuclear level. Nuclei of HL-60 cells showed a constitutive presence of PI 3-K that increased when cells were treated with differentiating doses of ATRA. PI 3-K was also detected tightly bound to nuclear matrices of HL-60 cells, isolated by nuclease treatment and high salt extraction. Four days of ATRA treatment induced a striking increase of nuclear matrix bound PI 3-K. In situ morphological analysis by confocal microscopy showed the translocation of PI 3-K to the nucleus and to the subnuclear fractions. PI 3-K enzymatic activity was stimulated during the granulocytic differentiation process and parallelled the increase in content of nuclei and subnuclear fractions. PI 3-K activity was recovered in nuclei also without the addition of exogenous substrates, consistent with the presence of both substrates and enzyme in the nucleus. These results indicate that specific intracellular localization of PI 3-K determines the production of different phosphoinositides in the sites of the enzyme translocation, and suggest that 3-phosphoinositide metabolism may play a specific role in the nucleus, candidating PI 3-K as a key enzyme in promoting granulocytic differentiation of HL-60 cells.
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Affiliation(s)
- M Marchisio
- Section of Human Anatomy, University of Ferrara, Italy
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Abstract
We have previously demonstrated that rat liver nuclei contain PI-PLC beta1 and gamma1 in the inner nuclear matrix and lamina associated with specific phosphodiesterase activity (Bertagnolo et al., 1995, Cell Signall. 7, 669-678). Since compensatory hepatic growth is an informative and well characterized model for natural cell proliferation, the presence of specific PI-PLC isoforms and their activity as well as PIP2 recovery were studied at various regenerating times, ranging from 3 to 22 h after partial hepatectomy. Three PI-PLC isoforms (beta1, gamma1, delta1) were examined in control and regenerating liver cells by using specific antibodies. By means of in situ immunocytochemistry and confocal microscopy, PI-PLC beta1 was found mainly in the nucleoplasm and this pattern was not modified after hepatectomy. On the contrary, the nuclear gamma1 isoform showed a marked decrease at 3 and 16 h after hepatectomy, but a clear increase at 22 h covering with bright intensity the whole nucleus. The PI-PLC delta1 isoform, which is exclusively cytoplasmic, was not altered during rat liver regeneration. By western blotting analysis on whole cell homogenates, none of the PI-PLC isozymes under study showed proliferation-linked modification. However, analyses of isolated nuclei identified changes in the nucleus associated PI-PLC gamma1 that paralleled the in situ observation whereas the beta1 isoform was unmodified at all the times examined. Nuclear phosphodiesterase activity on PIP2 was lower at 3 and 16 h, in comparison with sham operated rats, increased at 6 h and reached the highest value after 22 h. Consistently, the recovery of PIP2, obtained in conditions that optimise PIP-kinase activity, showed a marked decrease at 3 h and an increase up to 16 h of liver regeneration, followed by a further decrease at 22 h. These data are consistent with a close relationship between cell proliferation and the nuclear inositide cycle, depending, in rat liver, predominantly on the modulation of the gamma1 isoform of PI-PLC.
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Affiliation(s)
- L M Neri
- Laboratory of Cell Biology, Institute of Human Anatomy, University of Ferrara, Italy
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Bertagnolo V, Marchisio M, Capitani S, Neri LM. Intranuclear translocation of phospholipase C beta2 during HL-60 myeloid differentiation. Biochem Biophys Res Commun 1997; 235:831-7. [PMID: 9207247 DOI: 10.1006/bbrc.1997.6893] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.3] [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: 02/04/2023]
Abstract
Phospholipases C (PLC) beta3, gamma1, and gamma2 were detected in nuclei of HL-60 promyelocitic leukaemia cells. When HL-60 cells undergo terminal myeloid differentiation in the presence of ATRA, the beta2 isoform appeared inside nuclei and was up-regulated until 72 hours of ATRA treatment. The beta3 isozyme was also increased until 72 hours and both isoforms lowered their intranuclear amount at 96 hours and following days of treatment. By contrast PLC gamma1 and gamma2 progressively increased in the nucleus during granulocytic differentiation even after 72 hours of treatment. Terminal differentiation was characterised by the expression of high levels of PLC gamma1 and gamma2 and by low levels of PLC beta2 and beta3 in the nucleus. PIP2 and PIP hydrolysis paralleled the prevalence of the beta or gamma subfamily, respectively. Moreover, at all the examined times no changes of PLCs in the whole cell were detectable, indicating a de novo nuclear translocation of the beta2 and an increased accumulation of beta3, gamma1, and gamma2 isoforms. Thus, the intranuclear presence, expression, and activity of PLC isozymes, which are modulated during differentiation of HL-60 cells, implicate a role for nuclear phosphoinositide signalling in the process of cell maturation. In particular the nuclear translocation of PLC beta2 candidates this PLC as a key enzyme in the granulocytic differentiative commitment of HL-60 cells.
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Affiliation(s)
- V Bertagnolo
- Signal Transduction Unit/Laboratory of Cell Biology, Institute of Human Anatomy, University of Ferrara, Italy
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Zauli G, Visani G, Bassini A, Caramelli E, Ottaviani E, Bertolaso L, Bertagnolo V, Borgatti P, Capitani S. Nuclear translocation of protein kinase C-alpha and -zeta isoforms in HL-60 cells induced to differentiate along the granulocytic lineage by all-trans retinoic acid. Br J Haematol 1996; 93:542-50. [PMID: 8652371 DOI: 10.1046/j.1365-2141.1996.d01-1700.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.8] [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: 02/01/2023]
Abstract
We investigated whether members of the protein kinase C (PKC) family of enzymes were involved in the nuclear events underlying granulocytic differentiation induced by 10(-6) M all-trans retinoic acid (ATRA) in HL-60 cells. PKC activity was analysed by using a serine substituted specific peptide which enabled the evaluation of the whole catalytic activity of both Ca2+ -dependent and Ca2+ -independent PKC isoforms. In parallel, the subcellular distribution of various PKC isoforms was evaluated by Western blot, immunoprecipitation and in situ immunocytochemistry analyses. The level of PKC catalytic activity in the nuclei of HL-60 cells significantly (P < 0.01) and progressively increased from 1 h of ATRA treatment onwards. Consistently, PKC-alpha and -zeta showed a striking and selective accumulation inside the nucleus upon treatment with ATRA. On the other hand, PKC-beta I and -beta II, the only two other isoforms present at nuclear level, did not show any significant modification upon ATRA treatment. The remaining PKC isoforms were not detectable inside the nucleus and showed only modest and non-significant variations, also in whole cell homogenates, upon ATRA treatment, except PKC-delta which showed a progressive down-regulation. Our data suggest that a selective nuclear translocation of PKC-alpha and -zeta might be involved in the process of granulocytic differentiation induced by ATRA in HL-60 cells.
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Affiliation(s)
- G Zauli
- Institute of Human Anatomy, University of Ferrara, Italy
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