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Maia A, Martin-Fernandez J, Gaya J, Rodriguez-Faba O, Palou J, Castillo-Martin M. PO-488 AGR2 is a progression marker and a potential therapeutic target in non-muscle invasive bladder cancer. ESMO Open 2018. [DOI: 10.1136/esmoopen-2018-eacr25.990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Castillo-Martin M, Gladoun N, Lorduy AC, Gaya J, Algaba F, Redorta JP, Cordon-Cardo C. ΔNp63 is critical for progression of high grade non-muscle invasive bladder cancer through deregulation of specific genetic pathways. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)61648-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Puzio-Kuter AM, Laddha SV, Castillo-Martin M, Sun Y, Cordon-Cardo C, Chan CS, Levine AJ. Involvement of tumor suppressors PTEN and p53 in the formation of multiple subtypes of liposarcoma. Cell Death Differ 2015; 22:1785-91. [PMID: 25822339 PMCID: PMC4648325 DOI: 10.1038/cdd.2015.27] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 01/21/2015] [Accepted: 02/12/2015] [Indexed: 12/26/2022] Open
Abstract
Liposarcoma (LPS) is a type of soft tissue sarcoma that mostly occurs in adults, and in humans is characterized by amplifications of MDM2 and CDK4. The molecular pathogenesis of this malignancy is still poorly understood and, therefore, we developed a mouse model with conditional inactivation of PTEN and p53 to investigate these pathways in the progression of the disease. We show that deletion of these two tumor suppressors cooperate in the formation of multiple subtypes of LPS (from well-differentiated LPS to pleomorphic LPS). In addition, progression of the tumors is further characterized by the expression of D cyclins and CDK4/6, which allow for continued cell division. Microarray analysis also revealed novel genes that are differentially expressed between different subtypes of LPS, which could aid in understanding the disease and to unravel potential new therapeutic targets.
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Affiliation(s)
- A M Puzio-Kuter
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - S V Laddha
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - M Castillo-Martin
- Icahn School of Medicine at Mount Sinai, Mount Sinai School of Medicine, New York, USA
| | - Y Sun
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA
| | - C Cordon-Cardo
- Icahn School of Medicine at Mount Sinai, Mount Sinai School of Medicine, New York, USA
| | - C S Chan
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA.,Department of Medicine, Rutgers Robert Wood Johnson Medical School, New Jersey, USA
| | - A J Levine
- Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey, USA.,Institute for Advanced Study, Princeton, New Jersey, USA
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Epping MT, Lunardi A, Nachmani D, Castillo-Martin M, Thin TH, Cordon-Cardo C, Pandolfi PP. TSPYL2 is an essential component of the REST/NRSF transcriptional complex for TGFβ signaling activation. Cell Death Differ 2015; 22:1353-62. [PMID: 25613376 DOI: 10.1038/cdd.2014.226] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2014] [Revised: 11/02/2014] [Accepted: 11/19/2014] [Indexed: 11/09/2022] Open
Abstract
REST/NRSF is a transcriptional repressor of neuronal genes that has been implicated in development and cancer. In epithelial tissues, REST acts as a tumor suppressor and in breast cancer, loss of REST is associated with disease recurrence and poor prognosis. Here, we identify TSPYL2 (also known as CDA1 and DENTT) as a novel component of the REST protein complex. We show that REST and TSPYL2 are regulators of TGFβ signaling and that cell-cycle arrest induced by TGFβ requires both REST and TSPYL2. Importantly, knockdown of REST or TSPYL2 resulted in transformation of human mammary epithelial cells. Mechanistically, we demonstrate that the TSPYL2/REST complex promotes TGFβ signaling by repressing the expression of genes, such as the proto-oncogene neurotrophic tyrosine kinase receptor C (TrkC). These data provide insight into the role of REST as a tumor suppressor in epithelial tissues through the regulation of the TGFβ pathway.
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Affiliation(s)
- M T Epping
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - A Lunardi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - D Nachmani
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - M Castillo-Martin
- Department of Pathology, Mount Sinai School of Medicine, New York, NY, USA
| | - T H Thin
- Department of Pathology, Mount Sinai School of Medicine, New York, NY, USA
| | - C Cordon-Cardo
- Department of Pathology, Mount Sinai School of Medicine, New York, NY, USA
| | - P P Pandolfi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Department of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
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Yang Y, Wu J, Demir A, Castillo-Martin M, Melamed RD, Zhang G, Fukunaga-Kanabis M, Perez-Lorenzo R, Zheng B, Silvers DN, Brunner G, Wang S, Rabadan R, Cordon-Cardo C, Celebi JT. GAB2 induces tumor angiogenesis in NRAS-driven melanoma. Oncogene 2012; 32:3627-37. [PMID: 22926523 DOI: 10.1038/onc.2012.367] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 07/02/2012] [Accepted: 07/04/2012] [Indexed: 12/17/2022]
Abstract
GAB2 is a scaffold protein with diverse upstream and downstream effectors. MAPK and PI3K signaling pathways are known effectors of GAB2. It is amplified and overexpressed in a variety of human tumors including melanoma. Here we show a previously undescribed role for GAB2 in NRAS-driven melanoma. Specifically, we found that GAB2 is co-expressed with mutant NRAS in melanoma cell lines and tumor samples and its expression correlated with metastatic potential. Co-expression of GAB2(WT) and NRAS(G12D) in melanocytes and in melanoma cells increased anchorage-independent growth by providing GAB2-expressing cells a survival advantage through upregulation of BCL-2 family of anti-apoptotic factors. Of note, collaboration of GAB2 with mutant NRAS enhanced tumorigenesis in vivo and led to an increased vessel density with strong CD34 and VEGFR2 activity. We found that GAB2 facilitiated an angiogenic switch by upregulating HIF-1α and VEGF levels. This angiogenic response was significantly suppressed with the MEK inhibitor PD325901. These data suggest that GAB2-mediated signaling cascades collaborate with NRAS-driven downstream activation for conferring an aggressive phenotype in melanoma. Second, we show that GAB2/NRAS signaling axis is non-linear and non-redundant in melanocytes and melanoma, and thus are acting independent of each other. Finally, we establish a link between GAB2 and angiogenesis in melanoma for the first time. In conclusion, our findings provide evidence that GAB2 is a novel regulator of tumor angiogenesis in NRAS-driven melanoma through regulation of HIF-1α and VEGF expressions mediated by RAS-RAF-MEK-ERK signaling.
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Affiliation(s)
- Y Yang
- Department of Dermatology, Columbia University, New York, NY 10032, USA
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Samon JB, Castillo-Martin M, Jakubczak JL, Randolph S, Cordon-Cardo C, Ferrando AA. Reversal of glucocorticoid resistance by the g-secretase inhibitor PF-03084014 in T-cell acute lymphoblastic leukemia. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.9553] [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: 11/20/2022] Open
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