1
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Choo F, Rakheja D, Davis LE, Davare M, Park JY, Timmons CF, Neff T, Beadling C, Corless CL, Davis JL. GAB1-ABL1 fusions in tumors that have histologic overlap with NTRK-rearranged spindle cell tumors. Genes Chromosomes Cancer 2021; 60:623-630. [PMID: 34036664 DOI: 10.1002/gcc.22972] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/09/2021] [Accepted: 05/13/2021] [Indexed: 12/16/2022] Open
Abstract
Fibroblastic spindle cell tumors are a heterogeneous group of rare soft tissue tumors that are increasingly recognized as associated with a variety of kinase gene fusions. We report two cases of GAB1-ABL1 fusions in spindle cell tumors that histologically overlap with neurotrophic tyrosine receptor kinase (NTRK)-rearranged spindle cell tumors. The first case occurred in a 76-year-old female who had a large deep-seated spindle cell tumor composed of monotonous ovoid to spindle cells in a background of thick stromal collagen bands with prominent hyalinized vessels and inconspicuous mitoses (<1/10 HPF). Immunohistochemical stains showed co-expression of S100 and CD34. A GAB1-ABL1 fusion was detected by whole transcriptome RNA sequencing. The patient had a partial response to imatinib. The second case was previously described as a solitary fibrous tumor, occurring in a 9-year-old female with a cellular spindle cell tumor with patchy CD34 immunoexpression but no expression of S100. Upon clinicopathologic re-review, including anchored multiplex next-generation sequencing, a GAB1-ABL1 fusion was identified. In summary, we report the first two cases of spindle cell tumors with variable expression of CD34 and/or S100, driven by GAB1-ABL1 gene fusions with histologic overlap with NTRK-rearranged spindle cell tumors, suggesting that ABL-fusions may also be oncogenic drivers within this spectrum of tumors. These cases highlight the evolving understanding of fibroblastic spindle cell tumor biology and the utility of sequencing in identifying a targetable alteration.
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Affiliation(s)
- Florence Choo
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA
| | - Dinesh Rakheja
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.,Children's Health, Dallas, Texas, USA
| | - Lara E Davis
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA.,Division of Hematology and Medical Oncology, Department of Medicine, Oregon Health & Science University, Portland, Oregon, USA.,Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Monika Davare
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Oregon Health & Science University, Portland, Oregon, USA.,Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Jason Y Park
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.,Children's Health, Dallas, Texas, USA
| | - Charles F Timmons
- Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas, USA.,Children's Health, Dallas, Texas, USA
| | - Tanaya Neff
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Carol Beadling
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA
| | - Christopher L Corless
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA.,Department of Pathology, Oregon Health & Science University, Portland, Oregon, USA
| | - Jessica L Davis
- Knight Cancer Institute, Oregon Health & Science University, Portland, Oregon, USA.,Department of Pathology, Oregon Health & Science University, Portland, Oregon, USA
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2
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Tripurani SK, Wang Y, Fan YX, Rahimi M, Wong L, Lee MH, Starost MF, Rubin JS, Johnson GR. Suppression of Wnt/β-catenin signaling by EGF receptor is required for hair follicle development. Mol Biol Cell 2018; 29:2784-2799. [PMID: 30188763 PMCID: PMC6249831 DOI: 10.1091/mbc.e18-08-0488] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Mice that lack the epidermal growth factor receptor (EGFR) fail to develop a hair coat, but the mechanism responsible for this deficit is not completely understood. Here, we show that EGFR plays a critical role to attenuate wingless-type MMTV integration site family member (Wnt)/β-catenin signaling during postnatal hair follicle development. Genetic ablation of EGFR in mice resulted in increased mitotic activity in matrix cells, apoptosis in hair follicles, and impaired differentiation of epithelial lineages that form hair. EGFR is activated in wild-type hair follicle stem cells marked with SOX9 or NFATc1 and is essential to restrain proliferation and support stem cell numbers and their quiescence. We observed elevated levels of Wnt4, 6, 7b, 10a, 10b, and 16 transcripts and hyperactivation of the β-catenin pathway in EGFR knockout follicles. Using primary keratinocytes, we linked ligand-induced EGFR activation to suppression of nascent mRNA synthesis of Wnt genes. Overexpression of the Wnt antagonist sFRP1 in mice lacking EGFR demonstrated that elevated Wnts are a major cause for the hair follicle defects. Colocalization of transforming growth factor α and Wnts regulated by EGFR in stem cells and progeny indicates that EGFR autocrine loops control Wnts. Our findings define a novel mechanism that integrates EGFR and Wnt/β-catenin pathways to coordinate the delicate balance between proliferation and differentiation during development.
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Affiliation(s)
- Swamy K Tripurani
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
| | - Yan Wang
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
| | - Ying-Xin Fan
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
| | - Massod Rahimi
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
| | - Lily Wong
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
| | - Min-Hyung Lee
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
| | - Matthew F Starost
- Diagnostic and Research Services Branch, Office of the Director, National Institutes of Health, Bethesda, MD 20892
| | - Jeffrey S Rubin
- Laboratory of Cellular and Molecular Biology, Center for Cancer Research, National Institutes of Health, Bethesda, MD 20892
| | - Gibbes R Johnson
- Division of Biotechnology Review and Research IV, Office of Biotechnology Products, Office of Pharmaceutical Quality, Center for Drug Evaluation and Research, Food and Drug Administration, Silver Spring, MD 20993
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3
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Bai R, Weng C, Dong H, Li S, Chen G, Xu Z. MicroRNA-409-3p suppresses colorectal cancer invasion and metastasis partly by targeting GAB1 expression. Int J Cancer 2015; 137:2310-22. [PMID: 25991585 DOI: 10.1002/ijc.29607] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 05/03/2015] [Accepted: 05/11/2015] [Indexed: 12/19/2022]
Abstract
Colorectal cancer (CRC) is one of the most common cancers worldwide and its metastasis accounts for the majority of deaths. However, the molecular mechanisms underlying CRC progression are not well characterized. In this study, we identified miR-409-3p as a tumor suppressor of CRC. MiR-409-3p expression was significantly downregulated in CRC tissue compared to adjacent non-tumor tissue, and reduced miR-409-3p expression was correlated with CRC metastasis. In vitro and in vivo studies revealed that miR-409-3p negatively regulated CRC metastatic capacities, including suppressing cancer cell migration, invasion and metastasis. To explore the mechanism of action of miR-409-3p, we adopted a pathway and pathophysiological event-based target screening and validation approach, and found nine known metastasis-related genes as potential targets. The 3'-UTR binding assays between the candidates and miR-409-3p suggested that only GAB1, NR4A2 and LMO4 were directly regulated by the miRNA. However, endogenous expression analysis revealed that only GAB1 was modulated by miR-409-3p in CRC cells at both the mRNA and protein levels. Furthermore, we provided evidence to conclude that GAB1 was partially responsible for miR-409-3p-mediated metastasis. Taken together, our data demonstrate that miR-409-3p is a metastatic suppressor, and post-transcriptional inhibition of the oncoprotein GAB1 is one of the mechanisms of action of this miRNA. Our finding suggests miR-409-3p might be a novel target for CRC metastasis treatment.
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Affiliation(s)
- Rongpan Bai
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou, China.,Research Center of Molecular Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Chunhua Weng
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou, China
| | - Haojie Dong
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou, China.,Research Center of Molecular Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Siqi Li
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou, China.,Research Center of Molecular Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Guangdi Chen
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou, China.,Research Center of Molecular Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
| | - Zhengping Xu
- Institute of Environmental Health, Zhejiang University School of Public Health, Hangzhou, China.,Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Zhejiang University, Hangzhou, China.,Research Center of Molecular Medicine, Zhejiang University School of Medicine, Hangzhou, China.,Program in Molecular Cell Biology, Zhejiang University School of Medicine, Hangzhou, China
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4
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MAPK-induced Gab1 translocation to the plasma membrane depends on a regulated intramolecular switch. Cell Signal 2015; 27:340-52. [DOI: 10.1016/j.cellsig.2014.11.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 11/14/2014] [Accepted: 11/14/2014] [Indexed: 01/17/2023]
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5
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Bortezomib induces protective autophagy through AMP-activated protein kinase activation in cultured pancreatic and colorectal cancer cells. Cancer Chemother Pharmacol 2014; 74:167-76. [DOI: 10.1007/s00280-014-2451-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 03/11/2014] [Indexed: 12/25/2022]
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