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Pallante P, Sepe R, Puca F, Fusco A. High mobility group a proteins as tumor markers. Front Med (Lausanne) 2015; 2:15. [PMID: 25859543 PMCID: PMC4373383 DOI: 10.3389/fmed.2015.00015] [Citation(s) in RCA: 86] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 03/07/2015] [Indexed: 01/24/2023] Open
Abstract
Almost 30 years ago, overexpression of HMGA proteins was associated with malignant phenotype of rat thyroid cells transformed with murine retroviruses. Thereafter, several studies have analyzed HMGA expression in a wide range of human neoplasias. Here, we summarize all these results that, in the large majority of the cases, confirm the association of HMGA overexpression with high malignant phenotype as outlined by chemoresistance, spreading of metastases, and a global poor survival. Even though HMGA proteins’ overexpression indicates a poor prognosis in almost all malignancies, their detection may be particularly useful in determining the prognosis of breast, lung, and colon carcinomas, suggesting for the treatment a more aggressive therapy. In particular, the expression of HMGA2 in lung carcinomas is frequently associated with the presence of metastases. Moreover, recent data revealed that often the cause for the high HMGA proteins levels detected in human malignancies is a deregulated expression of non-coding RNA. Therefore, the HMGA proteins represent tumor markers whose detection can be a valid tool for the diagnosis and prognosis of neoplastic diseases.
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Affiliation(s)
- Pierlorenzo Pallante
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II , Naples , Italy
| | - Romina Sepe
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II , Naples , Italy
| | - Francesca Puca
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II , Naples , Italy
| | - Alfredo Fusco
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale, Consiglio Nazionale delle Ricerche, Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli Federico II , Naples , Italy ; Instituto Nacional de Câncer , Rio de Janeiro , Brazil
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52
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Altered MicroRNA Expression in Folliculotropic and Transformed Mycosis Fungoides. Pathol Oncol Res 2015; 21:821-5. [DOI: 10.1007/s12253-015-9897-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2014] [Accepted: 01/06/2015] [Indexed: 10/24/2022]
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Monaco M, Chiappetta G, Aiello C, Federico A, Sepe R, Russo D, Fusco A, Pallante P. CBX7 Expression in Oncocytic Thyroid Neoplastic Lesions (Hürthle Cell Adenomas and Carcinomas). Eur Thyroid J 2014; 3:211-6. [PMID: 25759796 PMCID: PMC4311303 DOI: 10.1159/000367989] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Revised: 09/01/2014] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Previous analysis of CBX7 expression in a large number of thyroid adenoma and carcinoma samples revealed a progressive reduction of CBX7 levels that was well related with the malignant grade of thyroid neoplasias. Hürthle cell tumors are unusual thyroid neoplasms characterized by the presence of particular cells called oncocytes. OBJECTIVES In order to develop new tools for a more accurate diagnosis of Hürthle cell tumors of the thyroid, we evaluated CBX7 protein levels to verify the possible presence of an expression signature. METHODS CBX7 expression was evaluated by immunohistochemistry in a panel of thyroid tissue sections including normal thyroids, goiters, follicular adenomas and oncocytic lesions. RESULTS CBX7 expression was low or null in 68% of Hürthle adenomas, whereas it was comparable to normal thyroid tissue in Hürthle hyperplasias and follicular adenomas. CONCLUSIONS Reduced expression of CBX7 suggests a more aggressive identity of Hürthle adenomas with respect to non-Hürthle ones.
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Affiliation(s)
- Mario Monaco
- Istituto Nazionale per lo Studio e la Cura dei Tumori ‘Fondazione Giovanni Pascale’, IRCCS, Naples, Italy
| | - Gennaro Chiappetta
- Istituto Nazionale per lo Studio e la Cura dei Tumori ‘Fondazione Giovanni Pascale’, IRCCS, Naples, Italy
| | - Concetta Aiello
- Istituto Nazionale per lo Studio e la Cura dei Tumori ‘Fondazione Giovanni Pascale’, IRCCS, Naples, Italy
| | - Antonella Federico
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli ‘Federico II’, Naples, Italy
| | - Romina Sepe
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli ‘Federico II’, Naples, Italy
| | - Daniela Russo
- Istituto Nazionale per lo Studio e la Cura dei Tumori ‘Fondazione Giovanni Pascale’, IRCCS, Naples, Italy
| | - Alfredo Fusco
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli ‘Federico II’, Naples, Italy
- Instituto Nacional de Câncer – INCA, Rio de Janeiro, Brazil
| | - Pierlorenzo Pallante
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli ‘Federico II’, Naples, Italy
- *Pierlorenzo Pallante, Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), Via Pansini 5, IT-80131 Naples (Italy), E-Mail
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Kim HY, Park JH, Won HY, Lee JY, Kong G. CBX7 inhibits breast tumorigenicity through DKK-1-mediated suppression of the Wnt/β-catenin pathway. FASEB J 2014; 29:300-13. [PMID: 25351982 DOI: 10.1096/fj.14-253997] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Polycomb protein chromobox homolog 7 (CBX7) is involved in several biologic processes including stem cell regulation and cancer development, but its roles in breast cancer remain unknown. Here, we demonstrate that CBX7 negatively regulates breast tumor initiation. CD44(+)/CD24(-)/ESA(+) breast stem-like cells showed diminished CBX7 expression. Furthermore, small hairpin RNA-mediated CBX7 knockdown in breast epithelial and cancer cells increased the CD44(+)/CD24(-)/ESA(+) cell population and reinforced in vitro self-renewal and in vivo tumor-initiating ability. Similarly, CBX7 overexpression repressed these effects. We also found that CBX7 inhibits the Wnt/β-catenin/T cell factor pathway by enhancing the expression of Dickkopf-1 (DKK-1), a Wnt antagonist. In particular, CBX7 increased DKK-1 transcription by cooperating with p300 acetyltransferase and subsequently enhancing the histone acetylation of the DKK-1 promoter. Furthermore, pharmacologic inhibition of DKK-1 in CBX7-overexpressing cells showed recovery of Wnt signaling and consequent rescue of the CD44(+)/CD24(-)/ESA(+) cell population. Taken together, these findings indicate that CBX7-mediated epigenetic induction of DKK-1 is crucial for the inhibition of breast tumorigenicity, suggesting that CBX7 could be a potential tumor suppressor in human breast cancer.
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Affiliation(s)
- Hey-Yon Kim
- Department of Pathology, College of Medicine, and
| | - Ji-Hye Park
- Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Korea
| | | | - Jeong-Yeon Lee
- Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Korea
| | - Gu Kong
- Department of Pathology, College of Medicine, and Institute for Bioengineering and Biopharmaceutical Research, Hanyang University, Seoul, Korea
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Forzati F, Federico A, Pallante P, Colamaio M, Esposito F, Sepe R, Gargiulo S, Luciano A, Arra C, Palma G, Bon G, Bucher S, Falcioni R, Brunetti A, Battista S, Fedele M, Fusco A. CBX7 gene expression plays a negative role in adipocyte cell growth and differentiation. Biol Open 2014; 3:871-9. [PMID: 25190058 PMCID: PMC4163664 DOI: 10.1242/bio.20147872] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
We have recently generated knockout mice for the Cbx7 gene, coding for a polycomb group protein that is downregulated in human malignant neoplasias. These mice develop liver and lung adenomas and carcinomas, which confirms a tumour suppressor role for CBX7. The CBX7 ability to downregulate CCNE1 expression likely accounts for the phenotype of the Cbx7-null mice. Unexpectedly, Cbx7-knockout mice had a higher fat tissue mass than wild-type, suggesting a role of CBX7 in adipogenesis. Consistently, we demonstrate that Cbx7-null mouse embryonic fibroblasts go towards adipocyte differentiation more efficiently than their wild-type counterparts, and this effect is Cbx7 dose-dependent. Similar results were obtained when Cbx7-null embryonic stem cells were induced to differentiate into adipocytes. Conversely, mouse embryonic fibroblasts and human adipose-derived stem cells overexpressing CBX7 show an opposite behaviour. These findings support a negative role of CBX7 in the control of adipocyte cell growth and differentiation.
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Affiliation(s)
- Floriana Forzati
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Antonella Federico
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Pierlorenzo Pallante
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Marianna Colamaio
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Francesco Esposito
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Romina Sepe
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Sara Gargiulo
- Dipartimento di Scienze Biomorfologiche e Funzionali, Universita' degli Studi di Napoli "Federico II", 80131 Naples, Italy Istituto di Biostrutture e di Bioimmagini del CNR, 80145 Naples, Italy
| | - Antonio Luciano
- Istituto Nazionale dei Tumori, Fondazione Pascale, 80131 Naples, Italy
| | - Claudio Arra
- Istituto Nazionale dei Tumori, Fondazione Pascale, 80131 Naples, Italy
| | - Giuseppe Palma
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy Istituto Nazionale dei Tumori, Fondazione Pascale, 80131 Naples, Italy
| | - Giulia Bon
- Istituto Nazionale Tumori Regina Elena, Dipartimento di Oncologia Sperimentale, Laboratorio di Oncogenesi Molecolare, 00158 Rome, Italy
| | - Stefania Bucher
- Divisione di Chirurgia Plastica e Ricostruttiva, Istituto San Gallicano, 00144 Rome, Italy
| | - Rita Falcioni
- Istituto Nazionale Tumori Regina Elena, Dipartimento di Oncologia Sperimentale, Laboratorio di Oncogenesi Molecolare, 00158 Rome, Italy
| | - Arturo Brunetti
- Dipartimento di Scienze Biomorfologiche e Funzionali, Universita' degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Sabrina Battista
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Monica Fedele
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
| | - Alfredo Fusco
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR e/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche, Università degli Studi di Napoli "Federico II", 80131 Naples, Italy
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microRNA alterations in ALDH positive mammary epithelial cells: a crucial contributing factor towards breast cancer risk reduction in case of early pregnancy. BMC Cancer 2014; 14:644. [PMID: 25176219 PMCID: PMC4167510 DOI: 10.1186/1471-2407-14-644] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Accepted: 08/20/2014] [Indexed: 11/10/2022] Open
Abstract
Background microRNAs have recently succeeded in grabbing the center stage in cancer research for their potential to regulate vital cellular process like cell cycle, stem cell renewal and epithelial mesenchymal transition. Breast cancer is the second most leading cause of cancer related mortality in women. The main reason for mortality is chemoresistance and metastasis for which remnant stem cells are believed to be the cause. One of the natural ways to reduce the risk of breast cancer in women is early pregnancy. Unraveling the mechanism behind it would add to our knowledge and help in evolving newer paradigms for breast cancer prevention. The current study deals with investigating transcriptomic differences in putative stem cells in mammary epithelial cell population (MECs) in terms of genes and microRNAs. In silico tools were used to identify potential mechanisms. ALDH positive MECs represent a putative stem cell population in the mammary gland. Methods MECs were extracted from the mammary gland of virgin and parous (one time pregnant) rats. ALDH positive MECs were sorted and used for transcriptional and translational analysis for genes and microRNAs. In silico analysis for target prediction and networking was performed through online portals of Target Scan and Metacore. Results A total of 35 and 49 genes and microRNAs respectively were found to be differentially expressed within the two groups. Among the important genes were Lifr, Acvr1c, and Pparγ which were found to be targeted by microRNAs in our dataset like miR-143, miR-30, miR-140, miR-27b, miR-125a, miR-128ab, miR-342, miR-26ab, miR-181, miR-150, miR-23ab and miR-425. In silico data mining and networking also demonstrates that genes and microRNA interaction can have profound effects on stem cell renewal, cell cycle dynamics and EMT processes of the MEC population. Conclusions Our data clearly shows that certain microRNAs play crucial role in the regulation of ALDH positive MECs and favor an anti-carcinogenic environment in the post-partum gland. Some of the potential interplaying mechanisms in the ALDH positive MEC population identified through this study are p21, Lifr and Pparγ mediated cell cycle regulation, regulation of metastasis and expansion of stem cell pool respectively. Electronic supplementary material The online version of this article (doi:10.1186/1471-2407-14-644) contains supplementary material, which is available to authorized users.
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Pallante P, Sepe R, Federico A, Forzati F, Bianco M, Fusco A. CBX7 modulates the expression of genes critical for cancer progression. PLoS One 2014; 9:e98295. [PMID: 24865347 PMCID: PMC4035280 DOI: 10.1371/journal.pone.0098295] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2013] [Accepted: 04/30/2014] [Indexed: 11/30/2022] Open
Abstract
Background We have previously shown that the expression of CBX7 is drastically decreased in several human carcinomas and that its expression progressively decreases with the appearance of a highly malignant phenotype. The aim of our study has been to investigate the mechanism by which the loss of CBX7 expression may contribute to the emergence of a more malignant phenotype. Methods We analyzed the gene expression profile of a thyroid carcinoma cell line after the restoration of CBX7 and, then, analyzed the transcriptional regulation of identified genes. Finally, we evaluated the expression of CBX7 and regulated genes in a panel of thyroid and lung carcinomas. Results We found that CBX7 negatively or positively regulates the expression of several genes (such as SPP1, SPINK1, STEAP1, and FOS, FOSB, EGR1, respectively) associated to cancer progression, by interacting with their promoter regions and modulating their transcriptional activity. Quantitative RT-PCR analyses in human thyroid and lung carcinoma tissues revealed a negative correlation between CBX7 and its down-regulated genes, while a positive correlation was observed with up-regulated genes. Conclusion In conclusion, the loss of CBX7 expression might play a critical role in advanced stages of carcinogenesis by deregulating the expression of specific effector genes.
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Affiliation(s)
- Pierlorenzo Pallante
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli “Federico II”, Naples, Italy
| | - Romina Sepe
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli “Federico II”, Naples, Italy
| | - Antonella Federico
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli “Federico II”, Naples, Italy
| | - Floriana Forzati
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli “Federico II”, Naples, Italy
| | - Mimma Bianco
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli “Federico II”, Naples, Italy
| | - Alfredo Fusco
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS), Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli “Federico II”, Naples, Italy
- * E-mail:
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Xia Y, Gao Y. MicroRNA-181b promotes ovarian cancer cell growth and invasion by targeting LATS2. Biochem Biophys Res Commun 2014; 447:446-51. [DOI: 10.1016/j.bbrc.2014.04.027] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 04/04/2014] [Indexed: 10/25/2022]
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59
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Pallante P, Battista S, Pierantoni GM, Fusco A. Deregulation of microRNA expression in thyroid neoplasias. Nat Rev Endocrinol 2014; 10:88-101. [PMID: 24247220 DOI: 10.1038/nrendo.2013.223] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
MicroRNAs (miRNAs) have emerged as a class of powerful gene expression regulators. Acting at the post-transcriptional level, miRNAs modulate the expression of at least one-third of the mRNAs that are encoded by the human genome. The expression of a single gene can be regulated by several miRNAs, and every miRNA has more than one target gene. Thus, the miRNA regulatory circuit, which affects essential cellular functions, is of enormous complexity. Moreover, a fundamental role for miRNAs has been determined in the onset and progression of human cancers. Here, we summarize the main alterations in miRNA expression that have been identified in thyroid neoplasias and examine the mechanisms through which miRNA deregulation might promote thyroid cell transformation. We also discuss how the emerging knowledge on miRNA deregulation could be harnessed for the diagnosis and treatment of thyroid neoplasias.
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Affiliation(s)
- Pierlorenzo Pallante
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS) "G. Salvatore", Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli "Federico II", via Pansini 5, 80131 Naples, Italy
| | - Sabrina Battista
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS) "G. Salvatore", Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli "Federico II", via Pansini 5, 80131 Naples, Italy
| | - Giovanna Maria Pierantoni
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS) "G. Salvatore", Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli "Federico II", via Pansini 5, 80131 Naples, Italy
| | - Alfredo Fusco
- Istituto per l'Endocrinologia e l'Oncologia Sperimentale (IEOS) "G. Salvatore", Consiglio Nazionale delle Ricerche (CNR), c/o Dipartimento di Medicina Molecolare e Biotecnologie Mediche (DMMBM), Università degli Studi di Napoli "Federico II", via Pansini 5, 80131 Naples, Italy
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Liu J, Shi W, Wu C, Ju J, Jiang J. miR-181b as a key regulator of the oncogenic process and its clinical implications in cancer (Review). Biomed Rep 2013; 2:7-11. [PMID: 24649060 DOI: 10.3892/br.2013.199] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 10/04/2013] [Indexed: 12/18/2022] Open
Abstract
MicroRNAs (miRNAs or miRs) are small, non-coding, single-stranded RNA molecules that regulate gene expression at the post-transcriptional level to repress protein expression of target genes. Among these, miR-181b has been found to be a critical regulatory miRNA linking inflammation and cancer. The functional significance of miR-181b in various tumors and translational research suggests that it exhibits great potential as a predictive and prognostic biomarker. Extensive efforts are underway to identify mRNA targets and the affected regulatory networks, which may be the key to providing a better understanding of miR-181b-mediated signaling pathways.
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Affiliation(s)
- Juan Liu
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, P.R. China
| | - Weifeng Shi
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, P.R. China
| | - Changping Wu
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, P.R. China
| | - Jingfang Ju
- Department of Pathology, Stony Brook University, Stony Brook, NY 11794, USA
| | - Jingting Jiang
- Department of Tumor Biological Treatment, The Third Affiliated Hospital of Soochow University, Changzhou, Jiangsu 213003, P.R. China
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Bisso A, Faleschini M, Zampa F, Capaci V, De Santa J, Santarpia L, Piazza S, Cappelletti V, Daidone M, Agami R, Del Sal G. Oncogenic miR-181a/b affect the DNA damage response in aggressive breast cancer. Cell Cycle 2013; 12:1679-87. [PMID: 23656790 PMCID: PMC3713126 DOI: 10.4161/cc.24757] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Breast cancer is a heterogeneous tumor type characterized by a complex spectrum of molecular aberrations, resulting in a diverse array of malignant features and clinical outcomes. Deciphering the molecular mechanisms that fuel breast cancer development and act as determinants of aggressiveness is a primary need to improve patient management. Among other alterations, aberrant expression of microRNAs has been found in breast cancer and other human tumors, where they act as either oncogenes or tumor suppressors by virtue of their ability to finely modulate gene expression at the post-transcriptional level. In this study, we describe a new role for miR-181a/b as negative regulators of the DNA damage response in breast cancer, impacting on the expression and activity of the stress-sensor kinase ataxia telangiectasia mutated (ATM). We report that miR-181a and miR-181b were overexpressed in more aggressive breast cancers, and their expression correlates inversely with ATM levels. Moreover we demonstrate that deregulated expression of miR-181a/b determines the sensitivity of triple-negative breast cancer cells to the poly-ADP-ribose-polymerase1 (PARP1) inhibition. These evidences suggest that monitoring the expression of miR-181a/b could be helpful in tailoring more effective treatments based on inhibition of PARP1 in breast and other tumor types.
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Affiliation(s)
- Andrea Bisso
- Laboratorio Nazionale CIB, AREA Science Park, Trieste, Italy
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Mussnich P, D'Angelo D, Leone V, Croce CM, Fusco A. The High Mobility Group A proteins contribute to thyroid cell transformation by regulating miR-603 and miR-10b expression. Mol Oncol 2013; 7:531-42. [PMID: 23384558 DOI: 10.1016/j.molonc.2013.01.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 01/07/2013] [Accepted: 01/08/2013] [Indexed: 01/08/2023] Open
Abstract
The overexpression of the HMGA1 proteins is a feature of human malignant neoplasias and has a causal role in cell transformation. The aim of our study has been to investigate the microRNAs (miRNAs or miRs) regulated by the HMGA1 proteins in the process of cell transformation analyzing the miRNA expression profile of v-ras-Ki oncogene-transformed thyroid cells expressing or not HMGA1 proteins. We demonstrate that, among the miRNAs regulated by cell transformation, there are miR-10b, miR-21, miR-125b, miR-221 and miR-222 that are positively and miR-34a and miR-603 that are negatively regulated by HMGA1 expression. Then, we focused our attention on the miR-10b and miR-603 whose expression was dependent on the presence of HMGA1 also in other cell systems. We found that miR-10b is able to target the PTEN gene, whereas miR-603 targets the CCND1 and CCND2 genes coding for the cyclin D1 and cyclin D2 proteins, respectively. Moreover, functional studies showed that miR-10b and miR-603 regulate positively and negatively, respectively, cell proliferation and migration suggesting a role of their dysregulation in thyroid cell transformation.
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Affiliation(s)
- Paula Mussnich
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR, c/o Dipartimento di Biologia e Patologia Cellulare e Molecolare, Facoltà di Medicina e Chirurgia di Napoli, Università degli Studi di Napoli Federico II, Naples, Italy
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Forzati F, Federico A, Pallante P, Fedele M, Fusco A. Tumor suppressor activity of CBX7 in lung carcinogenesis. Cell Cycle 2012; 11:1888-91. [PMID: 22544325 DOI: 10.4161/cc.20022] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The generation of knockout mice for the Cbx7 gene validates the tumor suppressor role of CBX7, whose expression is lost in several human malignancies. Indeed, these mice developed liver and lung adenomas and carcinomas. Cyclin E overexpression due to the lack of Cbx7 negative regulation of its expression likely accounts for the phenotype of the Cbx7-KO mice. A similar mechanism is likely involved in human lung carcinogenesis, since cyclin E upregulation associated with the loss of CBX7 expression has been observed in most of the human lung carcinomas analyzed.
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Affiliation(s)
- Floriana Forzati
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR, Dipartimento di Biologia e Patologia Cellulare e Molecolare, Facoltà di Medicina e Chirurgia di Napoli, Università degli Studi di Napoli Federico II, Naples, Italy
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64
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Liu C, Peng Z, Zhang N, Yu L, Han S, Li D, Li J. Identification of differentially expressed microRNAs and their PKC-isoform specific gene network prediction during hypoxic pre-conditioning and focal cerebral ischemia of mice. J Neurochem 2012; 120:830-41. [DOI: 10.1111/j.1471-4159.2011.07624.x] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Forzati F, Federico A, Pallante P, Abbate A, Esposito F, Malapelle U, Sepe R, Palma G, Troncone G, Scarfò M, Arra C, Fedele M, Fusco A. CBX7 is a tumor suppressor in mice and humans. J Clin Invest 2012; 122:612-23. [PMID: 22214847 DOI: 10.1172/jci58620] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Accepted: 11/16/2011] [Indexed: 11/17/2022] Open
Abstract
The CBX7 gene encodes a polycomb group protein that is known to be downregulated in many types of human cancers, although the role of this protein in carcinogenesis remains unclear. To shed light on this issue, we generated mice null for Cbx7. Mouse embryonic fibroblasts derived from these mice had a higher growth rate and reduced susceptibility to senescence compared with their WT counterparts. This was associated with upregulated expression of multiple cell cycle components, including cyclin E, which is known to play a key role in lung carcinogenesis in humans. Adult Cbx7-KO mice developed liver and lung adenomas and carcinomas. In in vivo and in vitro experiments, we demonstrated that CBX7 bound to the CCNE1 promoter in a complex that included HDAC2 and negatively regulated CCNE1 expression. Finally, we found that the lack of CBX7 protein expression in human lung carcinomas correlated with CCNE1 overexpression. These data suggest that CBX7 is a tumor suppressor and that its loss plays a key role in the pathogenesis of cancer.
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Affiliation(s)
- Floriana Forzati
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR, Dipartimento di Biologia e Patologia Cellulare e Molecolare, Facoltà di Medicina e Chirurgia, Università di Napoli Federico II, Naples, Italy
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Pallante P, Terracciano L, Carafa V, Schneider S, Zlobec I, Lugli A, Bianco M, Ferraro A, Sacchetti S, Troncone G, Fusco A, Tornillo L. The loss of the CBX7 gene expression represents an adverse prognostic marker for survival of colon carcinoma patients. Eur J Cancer 2010; 46:2304-13. [PMID: 20542683 DOI: 10.1016/j.ejca.2010.05.011] [Citation(s) in RCA: 65] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2010] [Revised: 04/28/2010] [Accepted: 05/06/2010] [Indexed: 10/19/2022]
Abstract
We have previously shown that CBX7 expression is associated with a more malignant phenotype in thyroid cancer. On this basis, we decided to investigate its possible prognostic value in colorectal cancer (CRC). CBX7 expression has been analysed by immunohistochemistry in tissue microarray (TMA) specimens obtained from a large series of sporadic CRC resections (n=1420). The CBX7 expression data have been correlated with several clinico-pathological parameters. CBX7 expression is reduced or absent in a significant number of CRC samples in comparison to the normal colonic mucosa and the loss of CBX7 expression correlates with a poor outcome of CRC (p<0.001). The block of CBX7 expression seems to occur at a transcriptional level since quantitative RT-PCR analysis showed a reduced CBX7-specific mRNA levels in CRC samples versus normal counterpart tissue (up to more than 50-fold). Finally, the restoration of CBX7 expression in two CRC cell lines reduces their proliferation rate suggesting a role of the loss of CBX7 expression in the progression step of colon carcinogenesis. Therefore, the data reported here indicate that the evaluation of CBX7 expression may represent a valid tool in the prognosis of colon cancer since a reduced survival of CRC patients is associated with the loss of CBX7 expression.
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Affiliation(s)
- Pierlorenzo Pallante
- Istituto di Endocrinologia ed Oncologia Sperimentale del CNR, c/o Dipartimento di Biologia e Patologia Cellulare e Molecolare, Facoltà di Medicina e Chirurgia di Napoli, Università degli Studi di Napoli Federico II, via Pansini 5, 80131 Naples, Italy
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