1
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Jeon S, Park J, Likhite S, Moon JH, Shin D, Li L, Meyer KC, Lee JW, Lee SK. The postnatal injection of AAV9-FOXG1 rescues corpus callosum agenesis and other brain deficits in the mouse model of FOXG1 syndrome. Mol Ther Methods Clin Dev 2024; 32:101275. [PMID: 39022742 PMCID: PMC11253142 DOI: 10.1016/j.omtm.2024.101275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 05/31/2024] [Indexed: 07/20/2024]
Abstract
Heterozygous mutations in the FOXG1 gene manifest as FOXG1 syndrome, a severe neurodevelopmental disorder characterized by structural brain anomalies, including agenesis of the corpus callosum, hippocampal reduction, and myelination delays. Despite the well-defined genetic basis of FOXG1 syndrome, therapeutic interventions targeting the underlying cause of the disorder are nonexistent. In this study, we explore the therapeutic potential of adeno-associated virus 9 (AAV9)-mediated delivery of the FOXG1 gene. Remarkably, intracerebroventricular injection of AAV9-FOXG1 to Foxg1 heterozygous mouse model at the postnatal stage rescues a wide range of brain pathologies. This includes the amelioration of corpus callosum deficiencies, the restoration of dentate gyrus morphology in the hippocampus, the normalization of oligodendrocyte lineage cell numbers, and the rectification of myelination anomalies. Our findings highlight the efficacy of AAV9-based gene therapy as a viable treatment strategy for FOXG1 syndrome and potentially other neurodevelopmental disorders with similar brain malformations, asserting its therapeutic relevance in postnatal stages.
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Affiliation(s)
- Shin Jeon
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
- Department of Systems Pharmacology & Translational Therapeutics, Institute for Immunology, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Jaein Park
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
| | - Shibi Likhite
- The Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - Ji Hwan Moon
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
- Samsung Genome Institute, Samsung Medical Center, Seoul 06351, Korea
| | - Dongjun Shin
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
| | - Liwen Li
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
| | - Kathrin C. Meyer
- The Research Institute at Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - Jae W. Lee
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
| | - Soo-Kyung Lee
- Department of Biological Sciences, College of Arts and Sciences, FOXG1 Research Center, University at Buffalo, The State University of New York (SUNY), Buffalo, NY 14260, USA
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2
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Chen Y, Wang Y, Yang C, Zhang X, Liu Y, Pu G, Jiang H, Pan Y, Li Z, Lai M. FOXG1 regulates the proliferation and apoptosis of human lung cancer cells. Heliyon 2023; 9:e19540. [PMID: 37809713 PMCID: PMC10558730 DOI: 10.1016/j.heliyon.2023.e19540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 08/14/2023] [Accepted: 08/25/2023] [Indexed: 10/10/2023] Open
Abstract
FOXG1, a transcriptional factor belonging to the Forkhead Box (Fox) superfamily, is highly expressed in the brain tissue during brain development and plays an important role in cellular proliferation. Recently, FOXG1 was reported to play important roles in oncogenesis, wherein its abnormal expression regulates tumor cell proliferation. However, the expression and role of FOXG1 in lung cancer remain largely unknown. This study investigated the clinical significance, expression, and role of FOXG1 in lung cancer. We found that FOXG1 was highly expressed in lung cancer tissues. MTT, CCK-8 and colony formation assays showed that FOXG1 overexpression could enhance the proliferation of A549 lung cancer cells. Flow cytometry analysis revealed that FOXG1 promoted the cell cycle and suppressed cell apoptosis. Additionally, the expression levels of PTEN, phosphorylated AKT, mTOR, p53, and Bax were significantly altered in response to changes in FOXG1 expression, indicating that FOXG1 regulated the PI3K pathway. Furthermore, in the xenograft mouse model, the upregulated FOXG1 expression strongly promoted tumor growth. In conclusion, these results suggested that FOXG1 was a critical regulator of the proliferation of lung cancer cells and enhanced tumor growth in vivo.
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Affiliation(s)
- Yan Chen
- Dali University, Dali, 671000, China
| | | | | | - Xiaoting Zhang
- Dali University Affiliated Hospital, Dali, 671000, China
| | | | | | | | - Yun Pan
- Dali University Affiliated Hospital, Dali, 671000, China
| | - Zhenjin Li
- Dali University Affiliated Hospital, Dali, 671000, China
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3
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Hettige NC, Fleming P, Semenak A, Zhang X, Peng H, Hagel MD, Théroux JF, Zhang Y, Ni A, Jefri M, Antonyan L, Alsuwaidi S, Schuppert A, Stumpf PS, Ernst C. FOXG1 targets BMP repressors and cell cycle inhibitors in human neural progenitor cells. Hum Mol Genet 2023; 32:2511-2522. [PMID: 37216650 PMCID: PMC10360395 DOI: 10.1093/hmg/ddad089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Revised: 05/16/2023] [Accepted: 05/17/2023] [Indexed: 05/24/2023] Open
Abstract
FOXG1 is a critical transcription factor in human brain where loss-of-function mutations cause a severe neurodevelopmental disorder, while increased FOXG1 expression is frequently observed in glioblastoma. FOXG1 is an inhibitor of cell patterning and an activator of cell proliferation in chordate model organisms but different mechanisms have been proposed as to how this occurs. To identify genomic targets of FOXG1 in human neural progenitor cells (NPCs), we engineered a cleavable reporter construct in endogenous FOXG1 and performed chromatin immunoprecipitation (ChIP) sequencing. We also performed deep RNA sequencing of NPCs from two females with loss-of-function mutations in FOXG1 and their healthy biological mothers. Integrative analyses of RNA and ChIP sequencing data showed that cell cycle regulation and Bone Morphogenic Protein (BMP) repression gene ontology categories were over-represented as FOXG1 targets. Using engineered brain cell lines, we show that FOXG1 specifically activates SMAD7 and represses CDKN1B. Activation of SMAD7 which inhibits BMP signaling may be one way that FOXG1 patterns the forebrain, while repression of cell cycle regulators such as CDKN1B may be one way that FOXG1 expands the NPC pool to ensure proper brain size. Our data reveal novel mechanisms on how FOXG1 may control forebrain patterning and cell proliferation in human brain development.
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Affiliation(s)
- Nuwan C Hettige
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
| | - Peter Fleming
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Amelia Semenak
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Xin Zhang
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
| | - Huashan Peng
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
| | - Marc-Daniel Hagel
- Joint Research Center for Computational Biomedicine, RWTH Aachen University, Aachen 52074, Germany
| | | | - Ying Zhang
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
| | - Anjie Ni
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
| | - Malvin Jefri
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Lilit Antonyan
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
| | - Shaima Alsuwaidi
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
| | - Andreas Schuppert
- Joint Research Center for Computational Biomedicine, RWTH Aachen University, Aachen 52074, Germany
| | - Patrick S Stumpf
- Joint Research Center for Computational Biomedicine, RWTH Aachen University, Aachen 52074, Germany
| | - Carl Ernst
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada
- Psychiatric Genetics Group, Montreal, QC H4H 1R3, Canada
- Department of Neurology and Neurosurgery, McGill University, Montreal, QC H3A 2B4, Canada
- Montreal Neurological Institute, McGill University, Montréal, QC H3A 2B4, Canada
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4
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Robertson FL, O'Duibhir E, Gangoso E, Bressan RB, Bulstrode H, Marqués-Torrejón MÁ, Ferguson KM, Blin C, Grant V, Alfazema N, Morrison GM, Pollard SM. Elevated FOXG1 in glioblastoma stem cells cooperates with Wnt/β-catenin to induce exit from quiescence. Cell Rep 2023; 42:112561. [PMID: 37243590 DOI: 10.1016/j.celrep.2023.112561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 09/30/2022] [Accepted: 05/08/2023] [Indexed: 05/29/2023] Open
Abstract
Glioblastoma (GBM) stem cells (GSCs) display phenotypic and molecular features reminiscent of normal neural stem cells and exhibit a spectrum of cell cycle states (dormant, quiescent, proliferative). However, mechanisms controlling the transition from quiescence to proliferation in both neural stem cells (NSCs) and GSCs are poorly understood. Elevated expression of the forebrain transcription factor FOXG1 is often observed in GBMs. Here, using small-molecule modulators and genetic perturbations, we identify a synergistic interaction between FOXG1 and Wnt/β-catenin signaling. Increased FOXG1 enhances Wnt-driven transcriptional targets, enabling highly efficient cell cycle re-entry from quiescence; however, neither FOXG1 nor Wnt is essential in rapidly proliferating cells. We demonstrate that FOXG1 overexpression supports gliomagenesis in vivo and that additional β-catenin induction drives accelerated tumor growth. These data indicate that elevated FOXG1 cooperates with Wnt signaling to support the transition from quiescence to proliferation in GSCs.
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Affiliation(s)
- Faye L Robertson
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Eoghan O'Duibhir
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Ester Gangoso
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Raul Bardini Bressan
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Harry Bulstrode
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Maria-Ángeles Marqués-Torrejón
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Kirsty M Ferguson
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Carla Blin
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Vivien Grant
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Neza Alfazema
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Gillian M Morrison
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Steven M Pollard
- Centre for Regenerative Medicine & Edinburgh Cancer Research UK Centre, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK.
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5
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Santo M, Rigoldi L, Falcone C, Tuccillo M, Calabrese M, Martínez-Cerdeño V, Mallamaci A. Spatial control of astrogenesis progression by cortical arealization genes. Cereb Cortex 2023; 33:3107-3123. [PMID: 35818636 DOI: 10.1093/cercor/bhac264] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 06/07/2022] [Accepted: 06/08/2022] [Indexed: 11/13/2022] Open
Abstract
Sizes of neuronal, astroglial and oligodendroglial complements forming the neonatal cerebral cortex largely depend on rates at which pallial stem cells give rise to lineage-committed progenitors and the latter ones progress to mature cell types. Here, we investigated the spatial articulation of pallial stem cells' (SCs) commitment to astrogenesis as well as the progression of committed astroglial progenitors (APs) to differentiated astrocytes, by clonal and kinetic profiling of pallial precursors. We found that caudal-medial (CM) SCs are more prone to astrogenesis than rostro-lateral (RL) ones, while RL-committed APs are more keen to proliferate than CM ones. Next, we assessed the control of these phenomena by 2 key transcription factor genes mastering regionalization of the early cortical primordium, Emx2 and Foxg1, via lentiviral somatic transgenesis, epistasis assays, and ad hoc rescue assays. We demonstrated that preferential CM SCs progression to astrogenesis is promoted by Emx2, mainly via Couptf1, Nfia, and Sox9 upregulation, while Foxg1 antagonizes such progression to some extent, likely via repression of Zbtb20. Finally, we showed that Foxg1 and Emx2 may be implicated-asymmetrically and antithetically-in shaping distinctive proliferative/differentiative behaviors displayed by APs in hippocampus and neocortex.
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Affiliation(s)
- Manuela Santo
- Laboratory of Cerebral Cortex Development, Department of Neuroscience, SISSA, via Bonomea 265, I-34136 Trieste, Italy
| | - Laura Rigoldi
- Laboratory of Cerebral Cortex Development, Department of Neuroscience, SISSA, via Bonomea 265, I-34136 Trieste, Italy
| | - Carmen Falcone
- Department of Pathology and Laboratory Medicine, UC Davis School of Medicine, 4400 V St, CA-95817 Sacramento, USA
| | - Mariacarmine Tuccillo
- Laboratory of Cerebral Cortex Development, Department of Neuroscience, SISSA, via Bonomea 265, I-34136 Trieste, Italy
| | - Michela Calabrese
- Laboratory of Cerebral Cortex Development, Department of Neuroscience, SISSA, via Bonomea 265, I-34136 Trieste, Italy
| | - Verónica Martínez-Cerdeño
- Department of Pathology and Laboratory Medicine & MIND Institute, UC Davis School of Medicine, 4400 V St, CA-95817 Sacramento, USA
| | - Antonello Mallamaci
- Laboratory of Cerebral Cortex Development, Department of Neuroscience, SISSA, via Bonomea 265, I-34136 Trieste, Italy
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6
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Candiello E, Reato G, Verginelli F, Gambardella G, D Ambrosio A, Calandra N, Orzan F, Iuliano A, Albano R, Sassi F, Luraghi P, Comoglio PM, Bertotti A, Trusolino L, Boccaccio C. MicroRNA 483-3p overexpression unleashes invasive growth of metastatic colorectal cancer via NDRG1 downregulation and ensuing activation of the ERBB3/AKT axis. Mol Oncol 2023. [PMID: 36862005 DOI: 10.1002/1878-0261.13408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 02/07/2023] [Accepted: 02/27/2023] [Indexed: 03/03/2023] Open
Abstract
In colorectal cancer, the mechanisms underlying tumor aggressiveness require further elucidation. Taking advantage of a large panel of human metastatic colorectal cancer xenografts and matched stem-like cell cultures (m-colospheres), here we show that the overexpression of microRNA 483-3p (miRNA-483-3p; also known as MIR-483-3p), encoded by a frequently amplified gene locus, confers an aggressive phenotype. In m-colospheres, endogenous or ectopic miRNA-483-3p overexpression increased proliferative response, invasiveness, stem cell frequency, and resistance to differentiation. Transcriptomic analyses and functional validation found that miRNA-483-3p directly targets NDRG1, known as a metastasis suppressor involved in EGFR family downregulation. Mechanistically, miRNA-483-3p overexpression induced the signaling pathway triggered by ERBB3, including AKT and GSK3β, and led to the activation of transcription factors regulating epithelial-mesenchymal transition (EMT). Consistently, treatment with selective anti-ERBB3 antibodies counteracted the invasive growth of miRNA-483-3p-overexpressing m-colospheres. In human colorectal tumors, miRNA-483-3p expression inversely correlated with NDRG1 and directly correlated with EMT transcription factor expression and poor prognosis. These results unveil a previously unrecognized link between miRNA-483-3p, NDRG1, and ERBB3-AKT signaling that can directly support colorectal cancer invasion and is amenable to therapeutic targeting.
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Affiliation(s)
- Ermes Candiello
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Gigliola Reato
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy.,Department of Oncology, University of Turin Medical School, Italy
| | - Federica Verginelli
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Gennaro Gambardella
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy.,Department of Chemical Materials and Industrial Engineering, University of Naples Federico II, Italy
| | - Antonio D Ambrosio
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Noemi Calandra
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy.,Department of Oncology, University of Turin Medical School, Italy
| | - Francesca Orzan
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | | | - Raffaella Albano
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Francesco Sassi
- Translational Cancer Medicine, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Paolo Luraghi
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | | | - Andrea Bertotti
- Department of Oncology, University of Turin Medical School, Italy.,Translational Cancer Medicine, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Livio Trusolino
- Department of Oncology, University of Turin Medical School, Italy.,Translational Cancer Medicine, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy
| | - Carla Boccaccio
- Laboratory of Cancer Stem Cell Research, Candiolo Cancer Institute, FPO-IRCCS, Turin, Italy.,Department of Oncology, University of Turin Medical School, Italy
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7
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Yu G, Chen Y, Hu Y, Zhou Y, Ding X, Zhou X. Roles of transducin-like enhancer of split (TLE) family proteins in tumorigenesis and immune regulation. Front Cell Dev Biol 2022; 10:1010639. [PMID: 36438567 PMCID: PMC9692235 DOI: 10.3389/fcell.2022.1010639] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Accepted: 10/31/2022] [Indexed: 08/16/2023] Open
Abstract
Mammalian transducin-like enhancer of split family proteins (TLEs) are homologous to Drosophila Groucho (Gro) and are essential transcriptional repressors. Seven TLE family members, TLE1-7, have been identified to date. These proteins do not bind DNA directly; instead, they bind a set of transcription factors and thereby inhibit target gene expression. Loss of TLEs in mice usually leads to defective early development; however, TLE functions in developmentally mature cells are unclear. Recent studies have revealed that TLEs are dysregulated in certain human cancer types and may function as oncogenes or tumor suppressors in different contexts. TLE levels also affect the efficacy of cancer treatments and the development of drug resistance. In addition, TLEs play critical roles in the development and function of immune cells, including macrophages and lymphocytes. In this review, we provide updates on the expression, function, and mechanism of TLEs; discuss the roles played by TLEs in tumorigenesis and the inflammatory response; and elaborate on several TLE-associated signaling pathways, including the Notch, Wnt, and MAPK pathways. Finally, we discuss potential strategies for targeting TLEs in cancer therapy.
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Affiliation(s)
- Guiping Yu
- Department of Immunology, Nantong University, School of Medicine, Nantong, China
- Department of Cardiothoracic Surgery, The Affiliated Jiangyin Hospital of Nantong University, Jiangyin, China
| | - Yiqi Chen
- Department of Immunology, Nantong University, School of Medicine, Nantong, China
| | - Yuwen Hu
- Department of Immunology, Nantong University, School of Medicine, Nantong, China
| | - Yan Zhou
- Department of Periodontology, The Affiliated Nantong Stomatological Hospital of Nantong University, Nantong, China
| | - Xiaoling Ding
- Department of Gastroenterology, The Affiliated Hospital of Nantong University, Nantong, China
| | - Xiaorong Zhou
- Department of Immunology, Nantong University, School of Medicine, Nantong, China
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8
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Li J, Gui C, Yao H, Luo C, Song H, Lin H, Xu Q, Chen X, Huang Y, Luo J, Chen W. An Aging and Senescence-Related Gene Signature for Prognosis Prediction in Clear Cell Renal Cell Carcinoma. Front Genet 2022; 13:871088. [PMID: 35646056 PMCID: PMC9136295 DOI: 10.3389/fgene.2022.871088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Accepted: 04/05/2022] [Indexed: 12/04/2022] Open
Abstract
Background: Clear cell renal cell carcinoma (ccRCC) is the most common solid lesion in the kidney. This study aims to establish an aging and senescence-related mRNA model for risk assessment and prognosis prediction in ccRCC patients. Methods: ccRCC data were obtained from The Cancer Genome Atlas (TCGA) and International Cancer Genome Consortium (ICGC) datasets. By applying univariate Cox regression, least absolute shrinkage and selection operator (LASSO), and multivariate Cox regression, a new prognostic model based on aging and senescence-related genes (ASRGs) was established. Depending on the prognostic model, high- and low-risk groups were identified for further study. The reliability of the prediction was evaluated in the validation cohort. Pan-cancer analysis was conducted to explore the role of GNRH1 in tumors. Results: A novel prognostic model was established based on eight ASRGs. This model was an independent risk factor and significantly correlated with the prognosis and clinicopathological features of ccRCC patients. The high- and low-risk groups exhibited distinct modes in the principal component analysis and different patterns in immune infiltration. Moreover, the nomogram combining risk score and other clinical factors showed excellent predictive ability, with AUC values for predicting 1-, 3-, and 5-year overall survival in the TCGA cohort equal to 0.88, 0.82, and 0.81, respectively. Conclusion: The model and nomogram based on the eight ASRGs had a significant value for survival prediction and risk assessment for ccRCC patients, providing new insights into the roles of aging and senescence in ccRCC.
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Affiliation(s)
- Jiaying Li
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Chengpeng Gui
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Haohua Yao
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Chenggong Luo
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Hongde Song
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Haishan Lin
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Quanhui Xu
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Xu Chen
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Yong Huang
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Junhang Luo
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- Institute of Precision Medicine, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- *Correspondence: Junhang Luo, ; Wei Chen,
| | - Wei Chen
- Department of Urology, First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
- *Correspondence: Junhang Luo, ; Wei Chen,
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9
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Hettige NC, Peng H, Wu H, Zhang X, Yerko V, Zhang Y, Jefri M, Soubannier V, Maussion G, Alsuwaidi S, Ni A, Rocha C, Krishnan J, McCarty V, Antonyan L, Schuppert A, Turecki G, Fon EA, Durcan TM, Ernst C. FOXG1 dose tunes cell proliferation dynamics in human forebrain progenitor cells. Stem Cell Reports 2022; 17:475-488. [PMID: 35148845 PMCID: PMC9040178 DOI: 10.1016/j.stemcr.2022.01.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 01/12/2022] [Accepted: 01/13/2022] [Indexed: 10/26/2022] Open
Abstract
Heterozygous loss-of-function mutations in Forkhead box G1 (FOXG1), a uniquely brain-expressed gene, cause microcephaly, seizures, and severe intellectual disability, whereas increased FOXG1 expression is frequently observed in glioblastoma. To investigate the role of FOXG1 in forebrain cell proliferation, we modeled FOXG1 syndrome using cells from three clinically diagnosed cases with two sex-matched healthy parents and one unrelated sex-matched control. Cells with heterozygous FOXG1 loss showed significant reduction in cell proliferation, increased ratio of cells in G0/G1 stage of the cell cycle, and increased frequency of primary cilia. Engineered loss of FOXG1 recapitulated this effect, while isogenic repair of a patient mutation reverted output markers to wild type. An engineered inducible FOXG1 cell line derived from a FOXG1 syndrome case demonstrated that FOXG1 dose-dependently affects all cell proliferation outputs measured. These findings provide strong support for the critical importance of FOXG1 levels in controlling human brain cell growth in health and disease.
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Affiliation(s)
- Nuwan C Hettige
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Huashan Peng
- Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Hanrong Wu
- Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Xin Zhang
- Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Volodymyr Yerko
- Department of Psychiatry, McGill University, Montreal, QC H3A 1A1, Canada
| | - Ying Zhang
- Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Malvin Jefri
- Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada; Integrated Program in Neuroscience, McGill University, Montreal, QC H3A 2B4, Canada
| | - Vincent Soubannier
- McGill Parkinson Program and Neurodegenerative Diseases Group, Montreal Neurological Institute, Department of Neurology and Neurosurgery, Montreal, QC H3A 2B4, Canada; The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Gilles Maussion
- McGill Parkinson Program and Neurodegenerative Diseases Group, Montreal Neurological Institute, Department of Neurology and Neurosurgery, Montreal, QC H3A 2B4, Canada; The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Shaima Alsuwaidi
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Anjie Ni
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Cecilia Rocha
- The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Jeyashree Krishnan
- Institute for Computational Biomedicine, Aachen University, Pauwelsstraße 19, 52074 Aachen, Germany
| | - Vincent McCarty
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Lilit Antonyan
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada
| | - Andreas Schuppert
- Institute for Computational Biomedicine, Aachen University, Pauwelsstraße 19, 52074 Aachen, Germany
| | - Gustavo Turecki
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Department of Psychiatry, McGill University, Montreal, QC H3A 1A1, Canada; Integrated Program in Neuroscience, McGill University, Montreal, QC H3A 2B4, Canada
| | - Edward A Fon
- McGill Parkinson Program and Neurodegenerative Diseases Group, Montreal Neurological Institute, Department of Neurology and Neurosurgery, Montreal, QC H3A 2B4, Canada
| | - Thomas M Durcan
- McGill Parkinson Program and Neurodegenerative Diseases Group, Montreal Neurological Institute, Department of Neurology and Neurosurgery, Montreal, QC H3A 2B4, Canada; The Neuro's Early Drug Discovery Unit (EDDU), McGill University, 3801 University Street, Montreal, QC H3A 2B4, Canada
| | - Carl Ernst
- Department of Human Genetics, McGill University, Montreal, QC H3A 0C7, Canada; Psychiatric Genetics Group, Douglas Mental Health University Institute, 6875 Boulevard LaSalle, Montreal, QC H4H 1R3, Canada; Department of Psychiatry, McGill University, Montreal, QC H3A 1A1, Canada; Integrated Program in Neuroscience, McGill University, Montreal, QC H3A 2B4, Canada.
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10
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Yu D, Li X, Wang Z, Jiang S, Yan T, Fang K, Shi Y, Jiang Z, Zhang S. Role of AUF1 in modulating the proliferation, migration and senescence of skin cells. Exp Ther Med 2021; 23:45. [PMID: 34934424 PMCID: PMC8652399 DOI: 10.3892/etm.2021.10967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 10/11/2021] [Indexed: 11/05/2022] Open
Abstract
AU-rich element RNA-binding factor 1 (AUF1) is a classical RNA-binding protein. AUF1 influences the process of development, apoptosis and tumorigenesis by interacting with adenylate-uridylate rich element-bearing mRNAs. Human skin is the largest organ of the body and acts as a protective barrier against pathogens and injuries. The aim of the present study was to explore the function and potential molecular pathways of AUF1 in human skin cells. AUF1 was overexpressed in human keratinocyte HaCaT cells and human skin fibroblast WS1 cells using adenoviruses and silenced using lentiviruses. AUF1 overexpression facilitated cell proliferation, whereas AUF1 knockdown induced the opposite effect. AUF1 reduced apoptosis but did not affect cell cycle progression. Forced AUF1 expression promoted the migration of human skin cells, as demonstrated by a scratch wound healing assay. Cell senescence was alleviated in AUF1-overexpressing skin cells, while AUF1 knockdown increased cell senescence. WS1 cells with AUF1 overexpression and silencing were used for RNA-sequencing and Kyoto Encyclopedia of Genes and Genomes-based pathway analysis to identify AUF1-affected mRNAs. A total of 18 mRNAs (eight mRNAs with positive associations and 10 mRNAs with negative associations) revealed consistent associations with both AUF1 overexpression and silencing. Enriched pathways associated with AUF1 expression included 'MAPK', 'cell adhesion molecules', 'proteasome', 'cellular senescence' and 'TGF-β signaling', indicating a complex regulatory network. Overall, the results of the present study revealed that AUF1 is involved in the proliferation, migration and senescence of skin cells in vitro and may be a potential target for cosmetic and disease treatment of skin.
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Affiliation(s)
- Daojiang Yu
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Xiaoqian Li
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Zhenyu Wang
- School of Radiation Medicine and Protection, Soochow University, Suzhou, Jiangsu 215123, P.R. China
| | - Sheng Jiang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Tao Yan
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
| | - Kai Fang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Yuhong Shi
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Zhiqiang Jiang
- Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China
| | - Shuyu Zhang
- West China School of Basic Medical Sciences and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China.,Department of Surgery, Second Affiliated Hospital of Chengdu Medical College, China National Nuclear Corporation 416 Hospital, Chengdu, Sichuan 610051, P.R. China.,Department of Oncology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213100, P.R. China
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11
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Ma Q, Xiao F, Hao Y, Song Z, Zhang J, Si C, Liang C, Liu D. The prognostic role of the Transducin-like Enhancer of split protein family in lung adenocarcinoma. Transl Lung Cancer Res 2021; 10:3251-3263. [PMID: 34430362 PMCID: PMC8350083 DOI: 10.21037/tlcr-21-582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2021] [Accepted: 07/26/2021] [Indexed: 02/01/2023]
Abstract
Background Lung cancer claims more lives than any other cancer worldwide. Lung adenocarcinoma (LUAD) accounts for approximately 40% of all lung cancers. Members of the Transducin-like Enhancer of split (TLE) protein family repress transcription through multiple mechanisms; however, their prognostic value in LUAD is still unclear. Methods A dataset from The Cancer Genome Atlas was used to analyze the relationship between the expression of TLE family members and outcomes of LUAD. The expression of TLE family members in 59 normal and 513 tumor samples in the TCGA dataset was selected. For paired analysis, 57 normal and 57 tumor paired tissues were selected. Gene Ontology (GO) term and Reactome pathway enrichment analyses of the TLE family members were performed. Progression-free survival (PFS) and overall survival (OS) served as endpoints in this study. All statistical analyses were performed with R 3.6.0. Results The expression levels of TLE family proteins differed between 59 normal and 513 tumor samples. High TLE1 and low TLE2 levels were associated with poor progression-free and OS (all P<0.050). Multivariate analysis demonstrated that high TLE1 expression and low TLE2 expression were independent risk factors for a poor outcome in LUAD. Moreover, the combined expression of these two proteins was a good tool for prognostication. Conclusions High TLE1 expression and low TLE2 are independent adverse prognostic factors in LUAD and can serve as prognostic biomarkers.
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Affiliation(s)
- Qianli Ma
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Fei Xiao
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Yang Hao
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Zhiyi Song
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Jin Zhang
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Chaozeng Si
- Department of Information Management, China-Japan Friendship Hospital, Beijing, China
| | - Chaoyang Liang
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
| | - Deruo Liu
- Department of Thoracic Surgery, China-Japan Friendship Hospital, Beijing, China
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12
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Xi H, He Z, Lv C. FOXG1 improves mitochondrial function and promotes the progression of nasopharyngeal carcinoma. Mol Med Rep 2021; 24:651. [PMID: 34278485 PMCID: PMC8299199 DOI: 10.3892/mmr.2021.12290] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 05/14/2021] [Indexed: 12/28/2022] Open
Abstract
Forkhead‑box gene 1 (FOXG1) has been reported to serve an important role in various malignancies, but its effects on nasopharyngeal cancer (NPC) remain unknown. Thus, the present study aimed to investigate the specific regulatory relationship between FOXG1 and NPC progression. Tumor tissues and matching para‑carcinoma tissues were obtained from patients with NPC. Small interfering (si)RNA‑FOXG1 and pcDNA3.1‑FOXG1 were transfected into SUNE‑1 and C666‑1 cells to knockdown and overexpress FOXG1 expression, respectively. FOXG1 expression was detected using reverse transcription‑quantitative PCR and immunohistochemistry. Cell proliferation was detected using MTT and 5‑ethynyl‑20‑deoxyuridine assays. Transwell invasion assay, wound healing assay and flow cytometry were used to detect cell invasion, migration and apoptosis, respectively. Western blotting was conducted to detect the expression levels of mitochondrial markers (succinate dehydrogenase complex flavoprotein subunit A, heat shock protein 60 and pyruvate dehydrogenase), epithelial‑mesenchymal transition (EMT) related proteins (N‑cadherin, Snail and E‑cadherin) and apoptosis‑related proteins [Bax, Bcl‑2, poly(ADP‑ribose) polymerase 1 (PARP), cleaved PARP, cleaved caspase‑3, cleaved caspase‑8, cleaved caspase‑9, caspase‑3, caspase‑8 and caspase‑9]. The mitochondrial membrane potential was detected via flow cytometry, while the ATP/ADP ratio was determined using the ADP/ATP ratio assay kit. The present results demonstrated that FOXG1 expression was upregulated in NPC tissues and cells, and was associated with distant metastasis and TNM stage. Moreover, knockdown of FOXG1 inhibited the proliferation, migration, invasion, EMT and mitochondrial function of SUNE‑1 cells, as well as promoted cell apoptosis, while the opposite results were observed in C666‑1 cells. In conclusion, FOXG1 enhanced proliferation, migration and invasion, induced EMT and improved mitochondrial function in NPC cells. The current findings provide an adequate theoretical basis for the treatment of NPC.
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Affiliation(s)
- Huajun Xi
- Department of Otolaryngology and Stomatology, Shouguang People's Hospital, Shouguang, Shandong 262700, P.R. China
| | - Zhengxiang He
- Department of Otolaryngology and Maxillofacial Surgery, Wuwei People's Hospital, Wuwei, Gansu 733000, P.R. China
| | - Cao Lv
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China
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13
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Mao B, Jia X, Liu H, Xu X, Zhao X, Yuan Y, Li H, Ma X, Zhang L. A novel TLE6 mutation, c.541+1G>A, identified using whole-exome sequencing in a Chinese family with female infertility. Mol Genet Genomic Med 2021; 9:e1743. [PMID: 34264011 PMCID: PMC8404233 DOI: 10.1002/mgg3.1743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/24/2021] [Accepted: 06/14/2021] [Indexed: 11/20/2022] Open
Abstract
Background Oocytes have a lot of maternal RNAs and proteins, which are used by the early embryo before zygotic genome activation. Transducin‐like enhancer of split 6 (TLE6) is a component of a subcortical maternal complex which plays a critical role in early embryonic development. Methods The patient had been diagnosed with primary infertility for 6 years and had undergone multiple failed in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) cycles. Genomic DNA samples were extracted from her parents’ peripheral blood as well as hers. Whole‐exome sequencing and Sanger validation were performed to identify candidate variants. Results We identified a novel transducin‐like enhancer of split 6 (TLE6) gene mutations in the female patient with recurrent IVF/ICSI failure. The patient carried a homozygous mutation (NM_001143986.1(TLE6): c.541+1G>A) and had viable but low‐quality embryos. Her parents both had heterozygous mutations at this locus. Conclusion Our study expands the mutational and phenotypic spectrum of TLE6 and suggests the important role of TLE6 during embryonic development. Our findings have implications for the genetic diagnosis of female infertility with recurrent IVF/ICSI failure.
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Affiliation(s)
- Bin Mao
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xueling Jia
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Hongfang Liu
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xiaojuan Xu
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xiaodong Zhao
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Yue Yuan
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Hongxing Li
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Xiaoling Ma
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
| | - Lili Zhang
- The Reproductive Medicine Hospital of the First Hospital of Lanzhou University, Lanzhou, Gansu, China
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14
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Koch S. Regulation of Wnt Signaling by FOX Transcription Factors in Cancer. Cancers (Basel) 2021; 13:cancers13143446. [PMID: 34298659 PMCID: PMC8307807 DOI: 10.3390/cancers13143446] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/04/2021] [Accepted: 07/07/2021] [Indexed: 12/29/2022] Open
Abstract
Simple Summary Cancer is caused by a breakdown of cell-to-cell communication, which results in the unrestricted expansion of cells within a tissue. In many cases, tumor growth is maintained by the continuous activation of cell signaling programs that normally drive embryonic development and wound repair. In this review article, I discuss how one of the largest human protein families, namely FOX proteins, controls the activity of the Wnt pathway, a major regulatory signaling cascade in developing organisms and adult stem cells. Evidence suggests that there is considerable crosstalk between FOX proteins and the Wnt pathway, which contributes to cancer initiation and progression. A better understanding of FOX biology may therefore lead to the development of new targeted treatments for many types of cancer. Abstract Aberrant activation of the oncogenic Wnt signaling pathway is a hallmark of numerous types of cancer. However, in many cases, it is unclear how a chronically high Wnt signaling tone is maintained in the absence of activating pathway mutations. Forkhead box (FOX) family transcription factors are key regulators of embryonic development and tissue homeostasis, and there is mounting evidence that they act in part by fine-tuning the Wnt signaling output in a tissue-specific and context-dependent manner. Here, I review the diverse ways in which FOX transcription factors interact with the Wnt pathway, and how the ectopic reactivation of FOX proteins may affect Wnt signaling activity in various types of cancer. Many FOX transcription factors are partially functionally redundant and exhibit a highly restricted expression pattern, especially in adults. Thus, precision targeting of individual FOX proteins may lead to safe treatment options for Wnt-dependent cancers.
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Affiliation(s)
- Stefan Koch
- Wallenberg Centre for Molecular Medicine (WCMM), Linköping University, 58185 Linköping, Sweden; ; Tel.: +46-132-829-69
- Department of Biomedical and Clinical Sciences (BKV), Linköping University, 58185 Linköping, Sweden
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15
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FoxG1 regulates the formation of cortical GABAergic circuit during an early postnatal critical period resulting in autism spectrum disorder-like phenotypes. Nat Commun 2021; 12:3773. [PMID: 34145239 PMCID: PMC8213811 DOI: 10.1038/s41467-021-23987-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Accepted: 05/27/2021] [Indexed: 01/02/2023] Open
Abstract
Abnormalities in GABAergic inhibitory circuits have been implicated in the aetiology of autism spectrum disorder (ASD). ASD is caused by genetic and environmental factors. Several genes have been associated with syndromic forms of ASD, including FOXG1. However, when and how dysregulation of FOXG1 can result in defects in inhibitory circuit development and ASD-like social impairments is unclear. Here, we show that increased or decreased FoxG1 expression in both excitatory and inhibitory neurons results in ASD-related circuit and social behavior deficits in our mouse models. We observe that the second postnatal week is the critical period when regulation of FoxG1 expression is required to prevent subsequent ASD-like social impairments. Transplantation of GABAergic precursor cells prior to this critical period and reduction in GABAergic tone via Gad2 mutation ameliorates and exacerbates circuit functionality and social behavioral defects, respectively. Our results provide mechanistic insight into the developmental timing of inhibitory circuit formation underlying ASD-like phenotypes in mouse models. Cortical excitatory/inhibitory (E/I) imbalance is a feature of autism spectrum disorder (ASD). Here, the authors show that FoxG1 regulates the formation of cortical GABAergic circuits affecting social behaviour during a specific postnatal time window in mouse models of ASD.
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16
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Bressan RB, Southgate B, Ferguson KM, Blin C, Grant V, Alfazema N, Wills JC, Marques-Torrejon MA, Morrison GM, Ashmore J, Robertson F, Williams CAC, Bradley L, von Kriegsheim A, Anderson RA, Tomlinson SR, Pollard SM. Regional identity of human neural stem cells determines oncogenic responses to histone H3.3 mutants. Cell Stem Cell 2021; 28:877-893.e9. [PMID: 33631116 PMCID: PMC8110245 DOI: 10.1016/j.stem.2021.01.016] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 10/22/2020] [Accepted: 01/20/2021] [Indexed: 01/06/2023]
Abstract
Point mutations within the histone H3.3 are frequent in aggressive childhood brain tumors known as pediatric high-grade gliomas (pHGGs). Intriguingly, distinct mutations arise in discrete anatomical regions: H3.3-G34R within the forebrain and H3.3-K27M preferentially within the hindbrain. The reasons for this contrasting etiology are unknown. By engineering human fetal neural stem cell cultures from distinct brain regions, we demonstrate here that cell-intrinsic regional identity provides differential responsiveness to each mutant that mirrors the origins of pHGGs. Focusing on H3.3-G34R, we find that the oncohistone supports proliferation of forebrain cells while inducing a cytostatic response in the hindbrain. Mechanistically, H3.3-G34R does not impose widespread transcriptional or epigenetic changes but instead impairs recruitment of ZMYND11, a transcriptional repressor of highly expressed genes. We therefore propose that H3.3-G34R promotes tumorigenesis by focally stabilizing the expression of key progenitor genes, thereby locking initiating forebrain cells into their pre-existing immature state.
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Affiliation(s)
- Raul Bardini Bressan
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Biotech Research and Innovation Centre, University of Copenhagen, Copenhagen 2200, Denmark
| | - Benjamin Southgate
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Kirsty M Ferguson
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Carla Blin
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Vivien Grant
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Neza Alfazema
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Jimi C Wills
- Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Maria Angeles Marques-Torrejon
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Gillian M Morrison
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - James Ashmore
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Faye Robertson
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Charles A C Williams
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Leanne Bradley
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Alex von Kriegsheim
- Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK
| | - Richard A Anderson
- MRC Centre for Reproductive Health, Queens Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Simon R Tomlinson
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Institute for Stem Cell Research, University of Edinburgh, Edinburgh EH16 4UU, UK
| | - Steven M Pollard
- Centre for Regenerative Medicine and Institute for Regeneration and Repair, University of Edinburgh, Edinburgh EH16 4UU, UK; Cancer Research UK Edinburgh Centre, University of Edinburgh, Edinburgh EH4 2XR, UK.
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17
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Cancer of unknown primary stem-like cells model multi-organ metastasis and unveil liability to MEK inhibition. Nat Commun 2021; 12:2498. [PMID: 33941777 PMCID: PMC8093243 DOI: 10.1038/s41467-021-22643-w] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Accepted: 03/16/2021] [Indexed: 12/13/2022] Open
Abstract
Cancers of unknown primary (CUPs), featuring metastatic dissemination in the absence of a primary tumor, are a biological enigma and a fatal disease. We propose that CUPs are a distinct, yet unrecognized, pathological entity originating from stem-like cells endowed with peculiar and shared properties. These cells can be isolated in vitro (agnospheres) and propagated in vivo by serial transplantation, displaying high tumorigenicity. After subcutaneous engraftment, agnospheres recapitulate the CUP phenotype, by spontaneously and quickly disseminating, and forming widespread established metastases. Regardless of different genetic backgrounds, agnospheres invariably display cell-autonomous proliferation and self-renewal, mostly relying on unrestrained activation of the MAP kinase/MYC axis, which confers sensitivity to MEK inhibitors in vitro and in vivo. Such sensitivity is associated with a transcriptomic signature predicting that more than 70% of CUP patients could be eligible to MEK inhibition. These data shed light on CUP biology and unveil an opportunity for therapeutic intervention. Cancer of unknown primary (CUP) is a mysterious malignancy featuring metastatic dissemination in the absence of a recognizable primary tumor. By characterizing CUP cancer stem cells we show that self-sustained long-term propagation and sensitivity to MEK inhibition are CUP common features.
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18
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Kulasekaran G, Chaineau M, Piscopo VEC, Verginelli F, Fotouhi M, Girard M, Tang Y, Dali R, Lo R, Stifani S, McPherson PS. An Arf/Rab cascade controls the growth and invasiveness of glioblastoma. J Cell Biol 2021; 220:e202004229. [PMID: 33443570 PMCID: PMC7812876 DOI: 10.1083/jcb.202004229] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 10/27/2020] [Accepted: 11/23/2020] [Indexed: 02/06/2023] Open
Abstract
Glioblastoma is the most common and deadly malignant brain cancer. We now demonstrate that loss of function of the endosomal GTPase Rab35 in human brain tumor initiating cells (BTICs) increases glioblastoma growth and decreases animal survival following BTIC implantation in mouse brains. Mechanistically, we identify that the GTPase Arf5 interacts with the guanine nucleotide exchange factor (GEF) for Rab35, DENND1/connecdenn, and allosterically enhances its GEF activity toward Rab35. Knockdown of either Rab35 or Arf5 increases cell migration, invasiveness, and self-renewal in culture and enhances the growth and invasiveness of BTIC-initiated brain tumors in mice. RNAseq of the tumors reveals up-regulation of the tumor-promoting transcription factor SPOCD1, and disruption of the Arf5/Rab35 axis in glioblastoma cells leads to strong activation of the epidermal growth factor receptor, with resulting enhancement of SPOCD1 levels. These discoveries reveal an unexpected cascade between an Arf and a Rab and indicate a role for the cascade, and thus endosomal trafficking, in brain tumors.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Peter S. McPherson
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
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19
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Zhao X, Bian R, Wang F, Wang Y, Li X, Guo Y, Zhang X, Luo G, Zhan R. GDF-5 promotes epidermal stem cells proliferation via Foxg1-cyclin D1 signaling. Stem Cell Res Ther 2021; 12:42. [PMID: 33413682 PMCID: PMC7792190 DOI: 10.1186/s13287-020-02106-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/15/2020] [Indexed: 01/08/2023] Open
Abstract
OBJECTIVE Epidermal stem cells (EpSCs) can self-renew, which are responsible for the long-term maintenance of the skin, and it also plays a critical role in wound re-epithelization, but the mechanism underlying EpSCs proliferation is unclear. GDF-5, also known as BMP-14, is a member of the BMP family and can be used as a self-renewal supporter. Here, we studied the effects of GDF-5 on mouse EpSCs proliferation mechanism in wound healing. METHODS Firstly, the effects of GDF-5 on EpSCs proliferation was tested by using CCK8 reagent and PCNA expression was analyzed by Western blotting. Secondly, we screened genes that promote EpSCs proliferation in the FOX and cyclin family by qPCR, and then the protein expression level of the selected genes was further analyzed by Western blotting. Thirdly, siRNA plasmids and pAdEasy adenovirus were transfected or infected, respectively, into mouse EpSCs to detect the effect of target genes on GDF-5-induced cell proliferation. Furthermore, we injected GDF-5 to a deep partial thickness burn mouse model for finding out whether EpSCs proliferation can be detected by immunohistochemical. Finally, the relevant target genes were analyzed by qPCR, immunoblotting, and dual-luciferase reporter gene detection. RESULTS We discovered that 100 ng/ml recombinant mouse GDF-5 was the optimal concentration for promoting mouse EpSCs proliferation. Through preliminary screened by qPCR, we found that Foxg1 and cyclin D1 could be the downstream molecules of GDF-5, and the results were confirmed by Western blotting. And the effect of GDF-5 on mouse EpSCs proliferation was adjusted by Foxg1/cyclin D1 in vitro and in vivo. Besides, GDF-5-induced transcription of cyclin D1 was regulated by Foxg1-mediated cyclin D1 promoter activity. CONCLUSION This paper showed that GDF-5 promotes mouse EpSCs proliferation via Foxg1-cyclin D1 signal pathway. It is suggested that GDF-5 may be a new approach to make EpSCs proliferation which can be used in wound healing.
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Affiliation(s)
- Xiaohong Zhao
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Ruyu Bian
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Fan Wang
- Department of Plastic and Reconstructive Surgery, Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Ying Wang
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Xue Li
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Yicheng Guo
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Xiaorong Zhang
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Gaoxing Luo
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China.
| | - Rixing Zhan
- Institute of Burn Research; State Key Laboratory of Trauma, Burn and Combined Injury; Southwest Hospital, The Third Military Medical University (Army Medical University), Chongqing, 400038, China.
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20
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Zhang C, Wu S. microRNA -378a-3p Restrains the Proliferation of Retinoblastoma Cells but Promotes Apoptosis of Retinoblastoma Cells via Inhibition of FOXG1. Invest Ophthalmol Vis Sci 2020; 61:31. [PMID: 32428232 PMCID: PMC7405766 DOI: 10.1167/iovs.61.5.31] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Purpose More recently, literature has emerged providing findings about the novelty of microRNAs (miR)-targeted therapeutics in the treatment of retinoblastoma (RB). The prime objective of this study was to identify the potential role of miR-378a-3p and its regulation in RB cells via forkhead box G1 (FOXG1). Methods The expression of miR-378a-3p and FOXG1 in the clinical RB tissues was determined using RNA quantitation and Western blot assays. The interaction between miR-378a-3p and FOXG1 was identified using dual luciferase reporter gene assay. The potential effects of miR-378a-3p on the RB cell biological processes were evaluated by conducting gain- and loss-of-function studies of miR-378a-3p and FOXG1, followed by cell viability, cell cycle progression, and apoptosis measurements. Furthermore, experiments were performed in nude mice to assess its effects on tumor formation. Results miR-378a-3p was poorly expressed, whereas FOXG1 was highly expressed in RB tissues and cells. miR-378a-3p bound to the FOXG1 3′ untranslated region and negatively modulated its expression. The overexpression of miR-378a-3p was found to decrease RB cell viability and to promote cell apoptosis in vitro, whereas overexpressed FOXG1 reversed the regulatory effects of miR-378a-3p on RB cellular behaviors. In nude mice, the restoration of miR-378a-3p by miR-378a-3p agomir was shown to play a role in the reduction of tumor volume and size relative to nude mice injected with negative control-agomir. Conclusions Our findings identified that increased miR-378a-3p exerted an inhibitory effect on RB cell proliferation by targeting FOXG1, suggesting the role of miR-378a-3p as a novel therapeutic target for RB.
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Knockout of the Transducin-Like Enhancer of Split 6 Gene Affects the Proliferation and Cell Cycle Process of Mouse Spermatogonia. Int J Mol Sci 2020; 21:ijms21165827. [PMID: 32823735 PMCID: PMC7461562 DOI: 10.3390/ijms21165827] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/30/2020] [Accepted: 08/10/2020] [Indexed: 12/19/2022] Open
Abstract
Tle6 (Transducin-like enhancer of split 6) is a member of the Tle co-repressor superfamily, which is expressed in various tissues of invertebrates and vertebrates and participates in the developmental process. However, the current research has only found that the TLE6 mutation is related to infertility, and the key regulatory mechanism of TLE6 remains to be explored. In this study, we combined Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR)-Cas9 and the Tet-on system to construct mouse spermatogonia cell lines that induced TLE6 protein knockout (KO), and studied the effect of Tle6 on mouse spermatogonia proliferation and the cell cycle. The results showed that, after drug induction, the Tle6 gene in mouse spermatogonia was successfully knocked out at the genome and protein levels, and the Tle6 gene knockout efficiency was confirmed to be 87.5% with gene-cloning technology. At the same time, we also found that the mouse spermatogonia proliferated slowly after the Tle6 knockout. Using flow cytometry, we found that the cells did not undergo significant apoptosis, and the number of cells in the S phase decreased. After real-time quantity PCR (qRT-PCR) analysis, we found that the expression of cell-proliferation-related genes, CCAAT enhancer-binding protein α(C/ebp α), granulocyte-colony stimulating factor(G-csf), cyclin-dependent kinases 4(Cdk 4), Cyclin E, proliferating cell nuclear antigen(Pcna), and S-phase kinase-associated protein 2 (Skp2) was significantly reduced, which further affected cell growth. In summary, Tle6 can regulate spermatogonia cell proliferation and the cell cycle and provide a scientific basis for studying the role of TLE6 on spermatogenesis.
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22
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Richard SA, Jia-Hao Z. Elucidating the pathogenic and biomarker potentials of FOXG1 in glioblastoma. Oncol Rev 2020; 14:444. [PMID: 32395201 PMCID: PMC7204822 DOI: 10.4081/oncol.2020.444] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 03/20/2020] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GB) is an extremely pugnacious brain cancer originating from neural stem (NS) cell-like cells. Forkhead box G1 (FOXG1; previously recognized as BF-1, qin, Chicken Brain Factor 1, or XBF-1 and renamed FOXG1 for mouse and human, and FoxG1 for other chordates) is an evolutionary preserved transcription factor driven from the forkhead box group of proteins FOXG1 modulates the speed of neurogenesis by maintaining progenitor cells in a proliferative mode as well as obstructing their differentiation into neurons during the initial periods of cortical formation. FOXG1 has been implicated in the formation of central nervous system (CNS) tumors and precisely GBs. Pathophysiologically, joint actions of FOXG1 and phosphatidylinositol- 3-kinases (PI3K) intermediate in intrinsic resistance of human GB cells to transforming growth factor-beta (TGF-β) stimulation of cyclin-dependent kinase inhibitor 1(p21Cip1) as well as growth inhibition. FOXG1 and NOTCH signaling pathways may functionally interrelate at different stages to facilitate gliomagenesis. Furthermore, FoxG1 actively contributed to the formation of transcription suppression complexes with corepressors of the Groucho/transducin-like Enhancer of split (Gro/TLEs). Also, FOXG1 was stimulated by Gro/TLE1 and abridged by Grg6. FOXG1 silencing in brain tumor-initiating cells (BTICs) also resulted in diminished secretion of markers characteristic undifferentiated natural neural stem/progenitor cells (NSPC) states, such as Oligodendrocyte transcription factor (OLIG2), (sex determining region Y)-box 2. (SOX2) and B lymphoma Mo-MLV insertion region 1 homolog (BMI1). This review therefore focuses on the pathogenic and biomarker potentials of FOXG1 in GB.
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Affiliation(s)
- Seidu A Richard
- Department of Neurosurgery, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, P.R. China.,Department of Medicine, Princefield University, Ho-Volta Region, Ghana, West Africa
| | - Zhou Jia-Hao
- Department of Neurosurgery, The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, P.R. China
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Recent Trends of microRNA Significance in Pediatric Population Glioblastoma and Current Knowledge of Micro RNA Function in Glioblastoma Multiforme. Int J Mol Sci 2020; 21:ijms21093046. [PMID: 32349263 PMCID: PMC7246719 DOI: 10.3390/ijms21093046] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022] Open
Abstract
Central nervous system tumors are a significant problem for modern medicine because of their location. The explanation of the importance of microRNA (miRNA) in the development of cancerous changes plays an important role in this respect. The first papers describing the presence of miRNA were published in the 1990s. The role of miRNA has been pointed out in many medical conditions such as kidney disease, diabetes, neurodegenerative disorder, arthritis and cancer. There are several miRNAs responsible for invasiveness, apoptosis, resistance to treatment, angiogenesis, proliferation and immunology, and many others. The research conducted in recent years analyzing this group of tumors has shown the important role of miRNA in the course of gliomagenesis. These particles seem to participate in many stages of the development of cancer processes, such as proliferation, angiogenesis, regulation of apoptosis or cell resistance to cytostatics.
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24
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Zhang S, Zhang Y, Dong Y, Guo L, Zhang Z, Shao B, Qi J, Zhou H, Zhu W, Yan X, Hong G, Zhang L, Zhang X, Tang M, Zhao C, Gao X, Chai R. Knockdown of Foxg1 in supporting cells increases the trans-differentiation of supporting cells into hair cells in the neonatal mouse cochlea. Cell Mol Life Sci 2020; 77:1401-1419. [PMID: 31485717 PMCID: PMC7113235 DOI: 10.1007/s00018-019-03291-2] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Revised: 08/08/2019] [Accepted: 08/28/2019] [Indexed: 12/17/2022]
Abstract
Foxg1 is one of the forkhead box genes that are involved in morphogenesis, cell fate determination, and proliferation, and Foxg1 was previously reported to be required for morphogenesis of the mammalian inner ear. However, Foxg1 knock-out mice die at birth, and thus the role of Foxg1 in regulating hair cell (HC) regeneration after birth remains unclear. Here we used Sox2CreER/+ Foxg1loxp/loxp mice and Lgr5-EGFPCreER/+ Foxg1loxp/loxp mice to conditionally knock down Foxg1 specifically in Sox2+ SCs and Lgr5+ progenitors, respectively, in neonatal mice. We found that Foxg1 conditional knockdown (cKD) in Sox2+ SCs and Lgr5+ progenitors at postnatal day (P)1 both led to large numbers of extra HCs, especially extra inner HCs (IHCs) at P7, and these extra IHCs with normal hair bundles and synapses could survive at least to P30. The EdU assay failed to detect any EdU+ SCs, while the SC number was significantly decreased in Foxg1 cKD mice, and lineage tracing data showed that much more tdTomato+ HCs originated from Sox2+ SCs in Foxg1 cKD mice compared to the control mice. Moreover, the sphere-forming assay showed that Foxg1 cKD in Lgr5+ progenitors did not significantly change their sphere-forming ability. All these results suggest that Foxg1 cKD promotes HC regeneration and leads to large numbers of extra HCs probably by inducing direct trans-differentiation of SCs and progenitors to HCs. Real-time qPCR showed that cell cycle and Notch signaling pathways were significantly down-regulated in Foxg1 cKD mice cochlear SCs. Together, this study provides new evidence for the role of Foxg1 in regulating HC regeneration from SCs and progenitors in the neonatal mouse cochlea.
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Affiliation(s)
- Shasha Zhang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Yuan Zhang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Ying Dong
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Lingna Guo
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Zhong Zhang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Buwei Shao
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Jieyu Qi
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Han Zhou
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Weijie Zhu
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Xiaoqian Yan
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Guodong Hong
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Liyan Zhang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Xiaoli Zhang
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Mingliang Tang
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Chunjie Zhao
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China
| | - Xia Gao
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Renjie Chai
- Key Laboratory for Developmental Genes and Human Disease, Ministry of Education, Institute of Life Sciences, Southeast University, Nanjing, 210096, China.
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Science, Beijing, China.
- Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 211189, China.
- Jiangsu Provincial Key Medical Discipline (Laboratory), Department of Otolaryngology Head and Neck Surgery, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China.
- Key Laboratory of Hearing Medicine of NHFPC, ENT Institute and Otorhinolaryngology Department of Affiliated Eye and ENT Hospital, Shanghai Engineering Research Centre of Cochlear Implant, State Key Laboratory of Medical Neurobiology, Fudan University, Shanghai, 200031, China.
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25
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Hou PS, hAilín DÓ, Vogel T, Hanashima C. Transcription and Beyond: Delineating FOXG1 Function in Cortical Development and Disorders. Front Cell Neurosci 2020; 14:35. [PMID: 32158381 PMCID: PMC7052011 DOI: 10.3389/fncel.2020.00035] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 02/04/2020] [Indexed: 11/13/2022] Open
Abstract
Forkhead Box G1 (FOXG1) is a member of the Forkhead family of genes with non-redundant roles in brain development, where alteration of this gene's expression significantly affects the formation and function of the mammalian cerebral cortex. FOXG1 haploinsufficiency in humans is associated with prominent differences in brain size and impaired intellectual development noticeable in early childhood, while homozygous mutations are typically fatal. As such, FOXG1 has been implicated in a wide spectrum of congenital brain disorders, including the congenital variant of Rett syndrome, infantile spasms, microcephaly, autism spectrum disorder (ASD) and schizophrenia. Recent technological advances have yielded greater insight into phenotypic variations observed in FOXG1 syndrome, molecular mechanisms underlying pathogenesis of the disease, and multifaceted roles of FOXG1 expression. In this review, we explore the emerging mechanisms of FOXG1 in a range of transcriptional to posttranscriptional events in order to evolve our current view of how a single transcription factor governs the assembly of an elaborate cortical circuit responsible for higher cognitive functions and neurological disorders.
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Affiliation(s)
- Pei-Shan Hou
- Laboratory for Developmental Biology, Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University, Tokyo, Japan.,Institute of Anatomy and Cell Biology, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Darren Ó hAilín
- Department of Molecular Embryology, Institute of Anatomy and Cell Biology, Medical Faculty, University of Freiburg, Freiburg, Germany
| | - Tanja Vogel
- Department of Molecular Embryology, Institute of Anatomy and Cell Biology, Medical Faculty, University of Freiburg, Freiburg, Germany.,Center for Basics in NeuroModulation (NeuroModul Basics), Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Carina Hanashima
- Laboratory for Developmental Biology, Department of Biology, Faculty of Education and Integrated Arts and Sciences, Waseda University, Tokyo, Japan.,Department of Integrative Bioscience and Biomedical Engineering, Graduate School of Advanced Science and Engineering, Waseda University Center for Advanced Biomedical Sciences, Tokyo, Japan
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26
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FOXG1-Related Syndrome: From Clinical to Molecular Genetics and Pathogenic Mechanisms. Int J Mol Sci 2019; 20:ijms20174176. [PMID: 31454984 PMCID: PMC6747066 DOI: 10.3390/ijms20174176] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/23/2019] [Accepted: 08/25/2019] [Indexed: 12/29/2022] Open
Abstract
Individuals with mutations in forkhead box G1 (FOXG1) belong to a distinct clinical entity, termed “FOXG1-related encephalopathy”. There are two clinical phenotypes/syndromes identified in FOXG1-related encephalopathy, duplications and deletions/intragenic mutations. In children with deletions or intragenic mutations of FOXG1, the recognized clinical features include microcephaly, developmental delay, severe cognitive disabilities, early-onset dyskinesia and hyperkinetic movements, stereotypies, epilepsy, and cerebral malformation. In contrast, children with duplications of FOXG1 are typically normocephalic and have normal brain magnetic resonance imaging. They also have different clinical characteristics in terms of epilepsy, movement disorders, and neurodevelopment compared with children with deletions or intragenic mutations. FOXG1 is a transcriptional factor. It is expressed mainly in the telencephalon and plays a pleiotropic role in the development of the brain. It is a key player in development and territorial specification of the anterior brain. In addition, it maintains the expansion of the neural proliferating pool, and also regulates the pace of neocortical neuronogenic progression. It also facilitates cortical layer and corpus callosum formation. Furthermore, it promotes dendrite elongation and maintains neural plasticity, including dendritic arborization and spine densities in mature neurons. In this review, we summarize the clinical features, molecular genetics, and possible pathogenesis of FOXG1-related syndrome.
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27
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Testa G, Mainardi M, Olimpico F, Pancrazi L, Cattaneo A, Caleo M, Costa M. A triheptanoin-supplemented diet rescues hippocampal hyperexcitability and seizure susceptibility in FoxG1 +/- mice. Neuropharmacology 2019; 148:305-310. [PMID: 30639390 DOI: 10.1016/j.neuropharm.2019.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 12/11/2018] [Accepted: 01/08/2019] [Indexed: 12/27/2022]
Abstract
The Forkhead Box G1 (FOXG1) gene encodes a transcription factor with an essential role in mammalian telencephalon development. FOXG1-related disorders, caused by deletions, intragenic mutations or duplications, are usually associated with severe intellectual disability, autistic features, and, in 87% of subjects, epileptiform manifestations. In a subset of patients with FoxG1 mutations, seizures remain intractable, prompting the need for novel therapeutic options. To address this issue, we took advantage of a haploinsufficient animal model, the FoxG1+/- mouse. In vivo electrophysiological analyses of FoxG1+/- mice detected hippocampal hyperexcitability, which turned into overt seizures upon delivery of the proconvulsant kainic acid, as confirmed by behavioral observations. These alterations were associated with decreased expression of the chloride transporter KCC2. Next, we tested whether a triheptanoin-based anaplerotic diet could have an impact on the pathological phenotype of FoxG1+/- mice. This manipulation abated altered neural activity and normalized enhanced susceptibility to proconvulsant-induced seizures, in addition to rescuing altered expression of KCC2 and increasing the levels of the GABA transporter vGAT. In conclusion, our data show that FoxG1 haploinsufficiency causes dysfunction of hippocampal circuits and increases the susceptibility to a proconvulsant insult, and that these alterations are rescued by triheptanoin dietary treatment.
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Affiliation(s)
- Giovanna Testa
- Laboratory of Biology "Bio@SNS", Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56124, Pisa, Italy
| | - Marco Mainardi
- Laboratory of Biology "Bio@SNS", Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56124, Pisa, Italy; Institute of Neuroscience, Italian National Research Council (CNR), Via Moruzzi, 1, 56124, Pisa, Italy.
| | - Francesco Olimpico
- Laboratory of Biology "Bio@SNS", Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56124, Pisa, Italy
| | - Laura Pancrazi
- Institute of Neuroscience, Italian National Research Council (CNR), Via Moruzzi, 1, 56124, Pisa, Italy
| | - Antonino Cattaneo
- Laboratory of Biology "Bio@SNS", Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56124, Pisa, Italy
| | - Matteo Caleo
- Laboratory of Biology "Bio@SNS", Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56124, Pisa, Italy; Institute of Neuroscience, Italian National Research Council (CNR), Via Moruzzi, 1, 56124, Pisa, Italy
| | - Mario Costa
- Laboratory of Biology "Bio@SNS", Scuola Normale Superiore, Piazza dei Cavalieri, 7, 56124, Pisa, Italy; Institute of Neuroscience, Italian National Research Council (CNR), Via Moruzzi, 1, 56124, Pisa, Italy.
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28
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The Dynamics of Deformed Wing Virus Concentration and Host Defensive Gene Expression after Varroa Mite Parasitism in Honey Bees, Apis mellifera. INSECTS 2019; 10:insects10010016. [PMID: 30626033 PMCID: PMC6358901 DOI: 10.3390/insects10010016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 10/30/2018] [Accepted: 12/11/2018] [Indexed: 12/22/2022]
Abstract
The synergistic interactions between the ectoparasitic mite Varroa destructor and Deformed wing virus (DWV) lead to the reduction in lifespan of the European honey bee Apis mellifera and often have been implicated in colony losses worldwide. However, to date, the underlying processes and mechanisms that form the multipartite interaction between the bee, mite, and virus have not been fully explained. To gain a better understanding of honey bees’ defense response to Varroa mite infestation and DWV infection, the DWV titers and transcription profiles of genes originating from RNAi, immunity, wound response, and homeostatic signaling pathways were monitored over a period of eight days. With respect to DWV, we observed low viral titers at early timepoints that coincided with high levels of Toll pathway transcription factor Dorsal, and its downstream immune effector molecules Hymenoptaecin, Apidaecin, Abaecin, and Defensin 1. However, we observed a striking increase in viral titers beginning after two days that coincided with a decrease in Dorsal levels and its corresponding immune effector molecules, and the small ubiquitin-like modifier (SUMO) ligase repressor of Dorsal, PIAS3. We observed a similar expression pattern for genes expressing transcripts for the RNA interference (Dicer/Argonaute), wound/homeostatic (Janus Kinase), and tissue growth (Map kinase/Wnt) pathways. Our results demonstrate that on a whole, honey bees are able to mount an immediate, albeit, temporally limited, immune and homeostatic response to Varroa and DWV infections, after which downregulation of these pathways leaves the bee vulnerable to expansive viral replication. The critical insights into the defense response upon Varroa and DWV challenges generated in this study may serve as a solid base for future research on the development of effective and efficient disease management strategies in honey bees.
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Hu AX, Adams JJ, Vora P, Qazi M, Singh SK, Moffat J, Sidhu SS. EPH Profiling of BTIC Populations in Glioblastoma Multiforme Using CyTOF. Methods Mol Biol 2019; 1869:155-168. [PMID: 30324522 DOI: 10.1007/978-1-4939-8805-1_14] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The ability to elucidate the phenotype of brain tumor initiating cell (BTIC) in the context of bulk tumor in glioblastoma multiforme (GBM) provides significant therapeutic benefits for therapeutic evaluation. For the identification of such an elusive and rare subpopulation of cells, a single cell analysis technology with deep profiling capabilities known as Mass Cytometry (CyTOF) can prove to be highly useful. CyTOF circumvents the spectral overlap limitations of traditional flow cytometry by replacing fluorophores with metal isotope tags, allowing the accurate detection of significantly more parameters at the same time. In this chapter, we demonstrate that synthetic antibodies can be conjugated with metal isotope tags for CyTOF analysis, resulting in the development of a highly tailored, custom multi-parameter panel. This toolset was used to stain patient-derived GBM cells, which was analyzed via CyTOF. Analysis software viSNE and SPADE were applied to study the co-expression patterns of the Eph Receptor (EphR) family and several putative BTIC markers in GBM, resulting in the identification of a distinct group of cells consistent with a BTIC subpopulation. This approach can be readily adapted to the detection of cancer stem-like cells in other cancer types.
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Affiliation(s)
- Amy X Hu
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada.
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada.
| | - Jarrett J Adams
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
| | - Parvez Vora
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Maleeha Qazi
- McMaster Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Sheila K Singh
- Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
- Department of Surgery, McMaster University, Hamilton, ON, Canada
- Stem Cell and Cancer Research Institute, McMaster University, Hamilton, ON, Canada
| | - Jason Moffat
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
- Canadian Institute for Advanced Research, Toronto, ON, Canada
| | - Sachdev S Sidhu
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
- Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, ON, Canada
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30
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Brassesco MS, Pezuk JA, Cortez MA, Bezerra Salomão K, Scrideli CA, Tone LG. TLE1 as an indicator of adverse prognosis in pediatric acute lymphoblastic leukemia. Leuk Res 2018; 74:42-46. [PMID: 30286331 DOI: 10.1016/j.leukres.2018.09.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 06/27/2018] [Accepted: 09/22/2018] [Indexed: 11/28/2022]
Abstract
PURPOSE Acute lymphoblastic leukemia (ALL) is the most common type of cancer in children, and despite the high rate of cure (over 80%) it still has a big impact on morbidity and mortality. The Transducin-like enhancer of split 1 (TLE1), a transcriptional corepressor, has been described as dysregulated and recently emerged as a tumor marker in several cancer types, including hematologic malignancies. METHODS In the present study TLE1 gene expression was evaluated by RT-qPCR. A total of 60 consecutive pathological ALL samples and 8 normal bone marrow samples were included. Associations between TLE1 levels and clinicopathological features were estimated using Mann-Whitney tests. RESULTS TLE1 mRNA levels were significantly diminished in ALL samples when compared to normal counterparts (fold change -1.45, p-value 0.039). Lower TLE1 expression levels were associated with poorer prognostic features such as age at diagnosis (<1 or >9 years-old), absence of the Common Acute Lymphoblastic Leukemia Antigen (CALLA) and high white cell count. Considering immunophenotype, decreased expression of TLE1 was only evident for T-cell ALL, what was validated using gene expression profiling data available in public repositories. No associations with event or overall survival were observed. However, TLE1 expression was statistically different between patients who achieved complete clinical remission (CCR) from those that relapsed or died. CONCLUSION These data are of particular interest and give support for a plausible role of TLE1 as a tumor suppressor in T-cell ALL. Moreover, the prognostic value of this corepressor may assist ALL treatment stratification and suggest the need of alternative regimens.
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Affiliation(s)
- María Sol Brassesco
- Department of Biology, Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, Brazil.
| | - Julia Alejandra Pezuk
- Department of Pharmacy and Department of Biotechnology and Health Innovation, Anhanguera University of Sao Paulo, UNIAN/SP, Brazil
| | - Maria Angelica Cortez
- Experimental Radiation Oncology, The University of Texas, MD Anderson Cancer Center, USA
| | - Karina Bezerra Salomão
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Brazil
| | | | - Luiz Gonzaga Tone
- Department of Pediatrics, Ribeirao Preto Medical School, University of Sao Paulo, Brazil
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31
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Rosmaninho P, Mükusch S, Piscopo V, Teixeira V, Raposo AA, Warta R, Bennewitz R, Tang Y, Herold-Mende C, Stifani S, Momma S, Castro DS. Zeb1 potentiates genome-wide gene transcription with Lef1 to promote glioblastoma cell invasion. EMBO J 2018; 37:e97115. [PMID: 29903919 PMCID: PMC6068449 DOI: 10.15252/embj.201797115] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 04/27/2018] [Accepted: 05/07/2018] [Indexed: 12/30/2022] Open
Abstract
Glioblastoma is the most common and aggressive brain tumor, with a subpopulation of stem-like cells thought to mediate its recurring behavior and therapeutic resistance. The epithelial-mesenchymal transition (EMT) inducing factor Zeb1 was linked to tumor initiation, invasion, and resistance to therapy in glioblastoma, but how Zeb1 functions at molecular level and what genes it regulates remain poorly understood. Contrary to the common view that EMT factors act as transcriptional repressors, here we show that genome-wide binding of Zeb1 associates with both activation and repression of gene expression in glioblastoma stem-like cells. Transcriptional repression requires direct DNA binding of Zeb1, while indirect recruitment to regulatory regions by the Wnt pathway effector Lef1 results in gene activation, independently of Wnt signaling. Amongst glioblastoma genes activated by Zeb1 are predicted mediators of tumor cell migration and invasion, including the guanine nucleotide exchange factor Prex1, whose elevated expression is predictive of shorter glioblastoma patient survival. Prex1 promotes invasiveness of glioblastoma cells in vivo highlighting the importance of Zeb1/Lef1 gene regulatory mechanisms in gliomagenesis.
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Affiliation(s)
- Pedro Rosmaninho
- Molecular Neurobiology Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Susanne Mükusch
- Institute of Neurology (Edinger Institute), Frankfurt University Medical School, Frankfurt, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Valerio Piscopo
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Vera Teixeira
- Molecular Neurobiology Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Alexandre Asf Raposo
- Molecular Neurobiology Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Rolf Warta
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Romina Bennewitz
- Institute of Neurology (Edinger Institute), Frankfurt University Medical School, Frankfurt, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Yeman Tang
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Christel Herold-Mende
- Division of Experimental Neurosurgery, Department of Neurosurgery, University Hospital of Heidelberg, Heidelberg, Germany
| | - Stefano Stifani
- Department of Neurology and Neurosurgery, Montreal Neurological Institute, McGill University, Montreal, QC, Canada
| | - Stefan Momma
- Institute of Neurology (Edinger Institute), Frankfurt University Medical School, Frankfurt, Germany
- German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Diogo S Castro
- Molecular Neurobiology Laboratory, Instituto Gulbenkian de Ciência, Oeiras, Portugal
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32
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Dali R, Verginelli F, Pramatarova A, Sladek R, Stifani S. Characterization of a FOXG1:TLE1 transcriptional network in glioblastoma-initiating cells. Mol Oncol 2018; 12:775-787. [PMID: 29316219 PMCID: PMC5983107 DOI: 10.1002/1878-0261.12168] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 12/12/2017] [Accepted: 12/21/2017] [Indexed: 12/11/2022] Open
Abstract
Glioblastoma (GBM) is the most common and deadly malignant brain cancer of glial cell origin, with a median patient survival of less than 20 months. Transcription factors FOXG1 and TLE1 promote GBM propagation by supporting maintenance of brain tumour-initiating cells (BTICs) with stem-like properties. Here, we characterize FOXG1 and TLE1 target genes in GBM patient-derived BTICs using ChIP-Seq and RNA-Seq approaches. These studies identify 150 direct FOXG1 targets, several of which are also TLE1 targets, involved in cell proliferation, differentiation, survival, chemotaxis and angiogenesis. Negative regulators of NOTCH signalling, including CHAC1, are among the transcriptional repression targets of FOXG1:TLE1 complexes, suggesting a crosstalk between FOXG1:TLE1 and NOTCH-mediated pathways in GBM. These results provide previously unavailable insight into the transcriptional programs underlying the tumour-promoting functions of FOXG1:TLE1 in GBM.
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Affiliation(s)
- Rola Dali
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill UniversityMontrealCanada
- McGill Center for BioinformaticsMcGill UniversityMontrealCanada
| | - Federica Verginelli
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill UniversityMontrealCanada
- Present address:
Laboratory of Cancer Stem Cell ResearchCandiolo Cancer InstituteFPO‐IRCCSCandioloItaly
| | - Albena Pramatarova
- Departments of Human Genetics and MedicineMcGill UniversityMontrealCanada
| | - Robert Sladek
- Departments of Human Genetics and MedicineMcGill UniversityMontrealCanada
| | - Stefano Stifani
- Department of Neurology and NeurosurgeryMontreal Neurological InstituteMcGill UniversityMontrealCanada
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33
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Chen J, Wu X, Xing Z, Ma C, Xiong W, Zhu X, He X. FOXG1 Expression Is Elevated in Glioma and Inhibits Glioma Cell Apoptosis. J Cancer 2018; 9:778-783. [PMID: 29581755 PMCID: PMC5868141 DOI: 10.7150/jca.22282] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 12/24/2017] [Indexed: 01/04/2023] Open
Abstract
FOXG1, a member of forkhead family transcriptional factor, is involved in telencephalon development. Recent studies showed FOXG1 was important for a variety of cellular events in cancer cells. In respect to glioma, FOXG1 has been shown to regulate cell proliferation and cell cycles. However, its impacts on other cellular events were not well studied. Here, we found FOXG1 had high expression in clinical glioma tissues, and its expression positively correlated with glioma malignancy. Moreover, we found FOXG1 played roles in glioma cell apoptosis. The expressions of caspase family members were significantly altered in response to change of FOXG1 expression, indicating a direct regulation of FOXG1 on caspase family members. These data strongly suggest FOXG1 is negative regulator of glioma cell apoptosis.
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Affiliation(s)
- Jingying Chen
- Key Laboratory of Molecular Epigenetics of Ministry of Education, Institute of Cytology and Genetics, Northeast Normal University, Changchun, China
| | - Xinmin Wu
- Department of Neurosurgery, First Hospital of Jilin University, Changchun, China
| | - Zhenkai Xing
- Key Laboratory of Molecular Epigenetics of Ministry of Education, Institute of Cytology and Genetics, Northeast Normal University, Changchun, China
| | - Chi Ma
- Key Laboratory of Molecular Epigenetics of Ministry of Education, Institute of Cytology and Genetics, Northeast Normal University, Changchun, China
| | - Wencheng Xiong
- Department of Neuroscience and Regenerative Medicine and Department of Neurology, Medical College of Georgia, Augusta University, USA
| | - Xiaojuan Zhu
- Key Laboratory of Molecular Epigenetics of Ministry of Education, Institute of Cytology and Genetics, Northeast Normal University, Changchun, China
| | - Xiaoxiao He
- Key Laboratory of Molecular Epigenetics of Ministry of Education, Institute of Cytology and Genetics, Northeast Normal University, Changchun, China
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34
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Schäfer S, Behling F, Skardelly M, Koch M, Ott I, Paulsen F, Tabatabai G, Schittenhelm J. Low FoxG1 and high Olig-2 labelling indices define a prognostically favourable subset in isocitrate dehydrogenase (IDH)-mutant gliomas. Neuropathol Appl Neurobiol 2017; 44:207-223. [PMID: 29053887 DOI: 10.1111/nan.12447] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 10/12/2017] [Indexed: 11/30/2022]
Abstract
AIMS Previous data suggest that expression of transcription factors FoxG1 and Olig-2 can separate hotspot histone H3 family member 3A (H3F3A)-mutant tumours in paediatric glioma. We evaluated their prognostic potential and feasibility for identifying H3F3A-mutant tumours among IDH-mutant/wild-type gliomas. METHODS Immunohistochemistry of FoxG1/Olig-2 and α-thalassaemia/mental-retardation-syndrome-X-linked gene (ATRX) in 471 cases of diffuse gliomas and molecular determination of IDH, H3F3A, MGMT and 1p/19 codeletion status. RESULTS Mean percentage of FoxG1-positive tumour cells increased from 17% in WHO grade II to over 21% in grade III to 37% in grade IV tumours, whereas mean Olig-2 indices decreased from 29% to 28% to 17% respectively. FoxG1 indices were similar in astrocytic and oligodendroglial tumours, whereas Olig-2 indices were increased in oligodendrogliomas compared to astrocytic tumours (n = 451, P < 0.0001). FoxG1-positive nuclei were significantly reduced in IDH and H3F3A K27-mutant tumours, whereas Olig-2-positive nuclei were significantly reduced in IDH-wild-type and H3F3A G34-mutant tumours. Among IDH-mutant tumours, mean Olig-2 index was significantly higher in 1p/19q codeleted tumours (mean: 43%) compared to IDH-mutant tumours with ATRX loss (mean: 23%, P < 0.0001). A significantly better outcome was first suggested for FoxG1low tumours (n = 212, log rank P = 0.0132) and Olig-2high tumours (n = 203, log-rank P = 0.0011) based on classification and regression tree determined cutoffs, but this was not confirmed by multivariate analysis including IDH mutation, WHO grade, ATRX status and age. CONCLUSIONS While the combined FoxG1/Olig-2 profile may discriminate H3F3A K27- and G34-mutant tumours and define a prognostically favourable subset in IDH-mutant gliomas, our data show that labelling indices of these transcription factors overlap with adult IDH-mutant and wild-type tumour classes.
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Affiliation(s)
- S Schäfer
- Department of Neuropathology, Institute of Pathology and Neuropathology, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - F Behling
- Department of Neurosurgery, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Center for CNS Tumors, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - M Skardelly
- Department of Neurosurgery, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Center for CNS Tumors, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - M Koch
- Center for CNS Tumors, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Interdisciplinary Division of Neurooncology, Departments of Vascular Neurology & Neurosurgery, Hertie Institute for Clinical Brain Research, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Center for Personalized Medicine, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,German Consortium for Translational Cancer Research (DKTK), DKFZ partner site Tuebingen, Tuebingen, Germany
| | - I Ott
- Department of Neuropathology, Institute of Pathology and Neuropathology, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - F Paulsen
- Center for CNS Tumors, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Department of Radiation Oncology, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany
| | - G Tabatabai
- Center for CNS Tumors, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Interdisciplinary Division of Neurooncology, Departments of Vascular Neurology & Neurosurgery, Hertie Institute for Clinical Brain Research, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Center for Personalized Medicine, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,German Consortium for Translational Cancer Research (DKTK), DKFZ partner site Tuebingen, Tuebingen, Germany
| | - J Schittenhelm
- Department of Neuropathology, Institute of Pathology and Neuropathology, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany.,Center for CNS Tumors, Comprehensive Cancer Center Tuebingen-Stuttgart, University Hospital of Tuebingen, Eberhard Karls University of Tuebingen, Tuebingen, Germany
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35
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Wang J, Li W, Zhao Y, Kang D, Fu W, Zheng X, Pang X, Du G. Members of FOX family could be drug targets of cancers. Pharmacol Ther 2017; 181:183-196. [PMID: 28830838 DOI: 10.1016/j.pharmthera.2017.08.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
FOX families play important roles in biological processes, including metabolism, development, differentiation, proliferation, apoptosis, migration, invasion and longevity. Here we are focusing on roles of FOX members in cancers, FOX members and drug resistance, FOX members and stem cells. Finally, FOX members as drug targets of cancer treatment were discussed. Future perspectives of FOXC1 research were described in the end.
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Affiliation(s)
- Jinhua Wang
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China; Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Wan Li
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Ying Zhao
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - De Kang
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Weiqi Fu
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Xiangjin Zheng
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Xiaocong Pang
- Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China
| | - Guanhua Du
- The State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China; Key Laboratory of Drug Target Research and Drug Screen, Institute of Materia Medica, Chinese Academy of Medical Science and Peking Union Medical College, 100050 Beijing, China.
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36
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Kumamoto T, Hanashima C. Evolutionary conservation and conversion of Foxg1 function in brain development. Dev Growth Differ 2017; 59:258-269. [PMID: 28581027 DOI: 10.1111/dgd.12367] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2017] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 12/31/2022]
Abstract
Among the forkhead box protein family, Foxg1 is a unique transcription factor that plays pleiotropic and non-redundant roles in vertebrate brain development. The emergence of the telencephalon at the rostral end of the neural tube and its subsequent expansion that is mediated by Foxg1 was a key reason for the vertebrate brain to acquire higher order information processing, where Foxg1 is repetitively used in the sequential events of telencephalic development to control multi-steps of brain circuit formation ranging from cell cycle control to neuronal differentiation in a clade- and species-specific manner. The objective of this review is to discuss how the evolutionary changes in cis- and trans-regulatory network that is mediated by a single transcription factor has contributed to determining the fundamental vertebrate brain structure and its divergent roles in instructing species-specific neuronal circuitry and functional specialization.
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Affiliation(s)
- Takuma Kumamoto
- Sorbonne Universités, UPMC Univ Paris 06, INSERM U968, CNRS UMR 7210, Institut de la Vision, 75012, Paris, France
| | - Carina Hanashima
- Faculty of Education and Integrated Arts and Sciences, Waseda University, Shinjuku-ku, Tokyo, 162-8480, Japan.,Graduate School of Advanced Science and Engineering, Waseda University, Shinjuku-ku, Tokyo, 162-8480, Japan.,Laboratory for Neocortical Development, RIKEN Center for Developmental Biology, Kobe, 650-0047, Japan
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37
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Bulstrode H, Johnstone E, Marques-Torrejon MA, Ferguson KM, Bressan RB, Blin C, Grant V, Gogolok S, Gangoso E, Gagrica S, Ender C, Fotaki V, Sproul D, Bertone P, Pollard SM. Elevated FOXG1 and SOX2 in glioblastoma enforces neural stem cell identity through transcriptional control of cell cycle and epigenetic regulators. Genes Dev 2017; 31:757-773. [PMID: 28465359 PMCID: PMC5435889 DOI: 10.1101/gad.293027.116] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2016] [Accepted: 03/30/2017] [Indexed: 12/11/2022]
Abstract
Glioblastoma multiforme (GBM) is an aggressive brain tumor driven by cells with hallmarks of neural stem (NS) cells. GBM stem cells frequently express high levels of the transcription factors FOXG1 and SOX2. Here we show that increased expression of these factors restricts astrocyte differentiation and can trigger dedifferentiation to a proliferative NS cell state. Transcriptional targets include cell cycle and epigenetic regulators (e.g., Foxo3, Plk1, Mycn, Dnmt1, Dnmt3b, and Tet3). Foxo3 is a critical repressed downstream effector that is controlled via a conserved FOXG1/SOX2-bound cis-regulatory element. Foxo3 loss, combined with exposure to the DNA methylation inhibitor 5-azacytidine, enforces astrocyte dedifferentiation. DNA methylation profiling in differentiating astrocytes identifies changes at multiple polycomb targets, including the promoter of Foxo3 In patient-derived GBM stem cells, CRISPR/Cas9 deletion of FOXG1 does not impact proliferation in vitro; however, upon transplantation in vivo, FOXG1-null cells display increased astrocyte differentiation and up-regulate FOXO3. In contrast, SOX2 ablation attenuates proliferation, and mutant cells cannot be expanded in vitro. Thus, FOXG1 and SOX2 operate in complementary but distinct roles to fuel unconstrained self-renewal in GBM stem cells via transcriptional control of core cell cycle and epigenetic regulators.
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Affiliation(s)
- Harry Bulstrode
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Ewan Johnstone
- Wellcome Trust-MRC Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, United Kingdom
| | - Maria Angeles Marques-Torrejon
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Kirsty M Ferguson
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Raul Bardini Bressan
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Carla Blin
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Vivien Grant
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Sabine Gogolok
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Ester Gangoso
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
| | - Sladjana Gagrica
- Department of Cancer Biology, UCL Cancer Institute, University College London, London WC1E 6BT, United Kingdom
| | - Christine Ender
- Department of Cancer Biology, UCL Cancer Institute, University College London, London WC1E 6BT, United Kingdom
| | - Vassiliki Fotaki
- Centre for Integrative Physiology, University of Edinburgh, Edinburgh EH8 9XD, United Kingdom
| | - Duncan Sproul
- MRC Human Genetics Unit
- Edinburgh Cancer Research Centre, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XU, United Kingdom
| | - Paul Bertone
- Wellcome Trust-MRC Stem Cell Institute, University of Cambridge, Cambridge CB2 1QR, United Kingdom
| | - Steven M Pollard
- Medical Research Council (MRC) Centre for Regenerative Medicine
- Edinburgh Cancer Research UK Cancer Centre, University of Edinburgh, Edinburgh EH16 4UU, United Kingdom
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38
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Abou-Antoun TJ, Hale JS, Lathia JD, Dombrowski SM. Brain Cancer Stem Cells in Adults and Children: Cell Biology and Therapeutic Implications. Neurotherapeutics 2017; 14:372-384. [PMID: 28374184 PMCID: PMC5398995 DOI: 10.1007/s13311-017-0524-0] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Brain tumors represent some of the most malignant cancers in both children and adults. Current treatment options target the majority of tumor cells but do not adequately target self-renewing cancer stem cells (CSCs). CSCs have been reported to resist the most aggressive radiation and chemotherapies, and give rise to recurrent, treatment-resistant secondary malignancies. With advancing technologies, we now have a better understanding of the genetic, epigenetic and molecular signatures and microenvironmental influences which are useful in distinguishing between distinctly different tumor subtypes. As a result, efforts are now underway to identify and target CSCs within various tumor subtypes based on this foundation. This review discusses progress in CSC biology as it relates to targeted therapies which may be uniquely different between pediatric and adult brain tumors. Studies to date suggest that pediatric brain tumors may benefit more from genetic and epigenetic targeted therapies, while combination treatments aimed specifically at multiple molecular pathways may be more effective in treating adult brain tumors which seem to have a greater propensity towards microenvironmental interactions. Ultimately, CSC targeting approaches in combination with current clinical therapies have the potential to be more effective owing to their ability to compromise CSCs maintenance and the mechanisms which underlie their highly aggressive and deadly nature.
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Affiliation(s)
- Tamara J Abou-Antoun
- School of Pharmacy, Department of Pharmaceutical Sciences, Lebanese American University, Byblos, Lebanon
| | - James S Hale
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Justin D Lathia
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine at Case, Western Reserve University, Cleveland, OH, USA
- Case Comprehensive Cancer Center, Cleveland, OH, USA
| | - Stephen M Dombrowski
- Department of Neurological Surgery, Section of Pediatric Neurosurgical Oncology, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA.
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39
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O'Duibhir E, Carragher NO, Pollard SM. Accelerating glioblastoma drug discovery: Convergence of patient-derived models, genome editing and phenotypic screening. Mol Cell Neurosci 2017; 80:198-207. [PMID: 27825983 PMCID: PMC6128397 DOI: 10.1016/j.mcn.2016.11.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Revised: 10/05/2016] [Accepted: 11/02/2016] [Indexed: 12/27/2022] Open
Abstract
Patients diagnosed with glioblastoma (GBM) continue to face a bleak prognosis. It is critical that new effective therapeutic strategies are developed. GBM stem cells have molecular hallmarks of neural stem and progenitor cells and it is possible to propagate both non-transformed normal neural stem cells and GBM stem cells, in defined, feeder-free, adherent culture. These primary stem cell lines provide an experimental model that is ideally suited to cell-based drug discovery or genetic screens in order to identify tumour-specific vulnerabilities. For many solid tumours, including GBM, the genetic disruptions that drive tumour initiation and growth have now been catalogued. CRISPR/Cas-based genome editing technologies have recently emerged, transforming our ability to functionally annotate the human genome. Genome editing opens prospects for engineering precise genetic changes in normal and GBM-derived neural stem cells, which will provide more defined and reliable genetic models, with critical matched pairs of isogenic cell lines. Generation of more complex alleles such as knock in tags or fluorescent reporters is also now possible. These new cellular models can be deployed in cell-based phenotypic drug discovery (PDD). Here we discuss the convergence of these advanced technologies (iPS cells, neural stem cell culture, genome editing and high content phenotypic screening) and how they herald a new era in human cellular genetics that should have a major impact in accelerating glioblastoma drug discovery.
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Affiliation(s)
- Eoghan O'Duibhir
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK; Institute of Genetics and Molecular Medicine, CRUK Edinburgh Centre, University of Edinburgh, UK
| | - Neil O Carragher
- Institute of Genetics and Molecular Medicine, CRUK Edinburgh Centre, University of Edinburgh, UK.
| | - Steven M Pollard
- MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh, UK; Institute of Genetics and Molecular Medicine, CRUK Edinburgh Centre, University of Edinburgh, UK.
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Yuan D, Yang X, Yuan Z, Zhao Y, Guo J. TLE1 function and therapeutic potential in cancer. Oncotarget 2017; 8:15971-15976. [PMID: 27852056 PMCID: PMC5362539 DOI: 10.18632/oncotarget.13278] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 11/01/2016] [Indexed: 12/18/2022] Open
Abstract
Groucho (Gro)/Transducin-like enhancer of split (TLE) family proteins act as co-repressors of many transcription factors, and are involved in key signaling pathways. TLE1 negatively regulates inflammation and has potential roles in various diseases, including cancer. Previous studies suggest TLE1 could be used as a diagnostic marker and is a possible therapeutic target in various malignancies. It is therefore important to elucidate the mechanisms underlying TLE1 function during cancer initiation and metastasis. In this review, we highlight the functions of TLE1 in cancer and explore targeted approaches for cancer diagnosis and treatment. In particular, we discuss the TLE1 function in pancreatic cancer.
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Affiliation(s)
- Da Yuan
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xue Yang
- Institute of Hematology and Blood Diseases Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin, China
| | - Zhenpeng Yuan
- Department of Pediatric Cardiac Surgery, Cardiovascular Institute and Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanqing Zhao
- Institute of Medical Information, Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing, China
| | - Junchao Guo
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Wu XC, Xiao CC, Li H, Tai Y, Zhang Q, Yang Y. Down-regulation of Transducin-Like Enhancer of Split protein 4 in hepatocellular carcinoma promotes cell proliferation and epithelial-Mesenchymal-Transition. Biochem Biophys Res Commun 2016; 477:161-6. [DOI: 10.1016/j.bbrc.2016.06.037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2016] [Accepted: 06/08/2016] [Indexed: 10/24/2022]
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Shin TH, Brynczka C, Dayyani F, Rivera MN, Sweetser DA. TLE4 regulation of wnt-mediated inflammation underlies its role as a tumor suppressor in myeloid leukemia. Leuk Res 2016; 48:46-56. [PMID: 27486062 DOI: 10.1016/j.leukres.2016.07.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 06/07/2016] [Accepted: 07/19/2016] [Indexed: 12/27/2022]
Abstract
The presence of AML1-ETO (RUNX1-CBF2T1), a fusion oncoprotein resulting from a t(8;21) chromosomal translocation, has been implicated as a necessary but insufficient event in the development of a subset of acute myeloid leukemias (AML). While AML1-ETO prolongs survival and inhibits differentiation of hematopoietic stem cells (HSC), other contributory events are needed for cell proliferation and leukemogenesis. We have postulated that specific tumor suppressor genes keep the leukemic potential of AML1-ETO in check. In studying del(9q), one of the most common concomitant chromosomal abnormalities with t(8;21), we identified the loss of an apparent tumor suppressor, TLE4, that appears to cooperate with AML1-ETO to confer a leukemic phenotype. This study sought to identify the molecular basis of this cooperation. We show that the loss of TLE4 confers proliferative advantage to leukemic cells, simultaneous with an upregulation of a pro- inflammatory signature mediated through aberrant increases in Wnt signaling activity. We further demonstrate that inhibition of cyclooxygenase (COX) activity partly reverses the pro-leukemic phenotype due to TLE4 knockdown, pointing towards a novel therapeutic approach for myeloid leukemia.
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Affiliation(s)
- Thomas H Shin
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States; Department of Molecular and Translational Medicine, Boston University School of Medicine, Boston, MA 02118, United States
| | - Christopher Brynczka
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States
| | - Farshid Dayyani
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States
| | - Miguel N Rivera
- Department of Pathology, Molecular Pathology Unit, Massachusetts General Hospital, Charlestown, MA 02129, United States
| | - David A Sweetser
- Department of Pediatrics, Divisions of Pediatric Hematology/Oncology and Medical Genetics, Massachusetts General Hospital, Boston, MA 02114, United States.
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Abstract
Metazoans encode clusters of paralogous Hox genes that are critical for proper development of the body plan. However, there are a number of unresolved issues regarding how paralogous Hox factors achieve specificity to control distinct cell fates. First, how do Hox paralogs, which have very similar DNA binding preferences in vitro, drive different transcriptional programs in vivo? Second, the number of potential Hox binding sites within the genome is vast compared to the number of sites bound. Hence, what determines where in the genome Hox factors bind? Third, what determines whether a Hox factor will activate or repress a specific target gene? Here, we review the current evidence that is beginning to shed light onto these questions. In particular, we highlight how cooperative interactions with other transcription factors (especially PBC and HMP proteins) and the sequences of cis-regulatory modules provide a basis for the mechanisms of Hox specificity. We conclude by integrating a number of the concepts described throughout the review in a case study of a highly interrogated Drosophila cis-regulatory module named “The Distal-less Conserved Regulatory Element” (DCRE).
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Affiliation(s)
- Arya Zandvakili
- Molecular and Developmental Biology Graduate Program, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Medical-Scientist Training Program, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA;
| | - Brian Gebelein
- Division of Developmental Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH 45229, USA
- Correspondence: ; Tel.: +1-513-636-3366
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Carén H, Stricker SH, Bulstrode H, Gagrica S, Johnstone E, Bartlett TE, Feber A, Wilson G, Teschendorff AE, Bertone P, Beck S, Pollard SM. Glioblastoma Stem Cells Respond to Differentiation Cues but Fail to Undergo Commitment and Terminal Cell-Cycle Arrest. Stem Cell Reports 2015; 5:829-842. [PMID: 26607953 PMCID: PMC4649264 DOI: 10.1016/j.stemcr.2015.09.014] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 09/16/2015] [Accepted: 09/16/2015] [Indexed: 12/29/2022] Open
Abstract
Glioblastoma (GBM) is an aggressive brain tumor whose growth is driven by stemcell-like cells. BMP signaling triggers cell-cycle exit and differentiation of GBM stemcells (GSCs) and, therefore, might have therapeutic value. However, the epigenetic mechanisms that accompany differentiation remain poorly defined. It is also unclear whether cell-cycle arrest is terminal. Herewe find only a subset ofGSCcultures exhibit astrocyte differentiation in response to BMP. Although overtly differentiated non-cycling astrocytes are generated, they remain vulnerable to cell-cycle re-entry and fail to appropriately reconfigure DNA methylation patterns. Chromatin accessibility mapping identified loci that failed to alter in response to BMP and these were enriched in SOX transcription factor-binding motifs. SOX transcription factors, therefore, may limit differentiation commitment. A similar propensity for cell-cycle re-entry and de-differentiation was observed in GSC-derived oligodendrocyte-like cells. These findings highlight significant obstacles to BMP-induced differentiation as therapy forGBM.
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Affiliation(s)
- Helena Carén
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK; Sahlgrenska Cancer Center, Department of Pathology, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, 405 30 Gothenburg, Sweden; Samantha Dickson Brain Cancer Unit, University College London, London WC1E 6BT, UK
| | - Stefan H Stricker
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK; Samantha Dickson Brain Cancer Unit, University College London, London WC1E 6BT, UK
| | - Harry Bulstrode
- Genome Biology and Developmental Biology Units, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Sladjana Gagrica
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK
| | - Ewan Johnstone
- European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SD, UK
| | - Thomas E Bartlett
- Department of Mathematics and CoMPLEX, University College London, London WC1E 6BT, UK
| | - Andrew Feber
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK
| | - Gareth Wilson
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK
| | - Andrew E Teschendorff
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK
| | - Paul Bertone
- Wellcome Trust-Medical Research Council Cambridge Stem Cell Institute, Tennis Court Road, University of Cambridge, Cambridge CB2 1QR, UK; European Molecular Biology Laboratory (EMBL), European Bioinformatics Institute, Wellcome Trust Genome Campus, Cambridge CB10 1SD, UK; Genome Biology and Developmental Biology Units, European Molecular Biology Laboratory (EMBL), Meyerhofstrasse 1, 69117 Heidelberg, Germany
| | - Stephan Beck
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK.
| | - Steven M Pollard
- Department of Cancer Biology, UCL Cancer Institute, University College London, Paul O'Gorman Building, 72 Huntley Street, London WC1E 6BT, UK; Samantha Dickson Brain Cancer Unit, University College London, London WC1E 6BT, UK; MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh bioQuarter, 5 Little France Drive, Edinburgh EH16 4UU, UK.
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EGFR Mutation Promotes Glioblastoma through Epigenome and Transcription Factor Network Remodeling. Mol Cell 2015; 60:307-18. [PMID: 26455392 DOI: 10.1016/j.molcel.2015.09.002] [Citation(s) in RCA: 137] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2015] [Revised: 06/02/2015] [Accepted: 09/01/2015] [Indexed: 12/20/2022]
Abstract
Epidermal growth factor receptor (EGFR) gene amplification and mutations are the most common oncogenic events in glioblastoma (GBM), but the mechanisms by which they promote aggressive tumor growth are not well understood. Here, through integrated epigenome and transcriptome analyses of cell lines, genotyped clinical samples, and TCGA data, we show that EGFR mutations remodel the activated enhancer landscape of GBM, promoting tumorigenesis through a SOX9 and FOXG1-dependent transcriptional regulatory network in vitro and in vivo. The most common EGFR mutation, EGFRvIII, sensitizes GBM cells to the BET-bromodomain inhibitor JQ1 in a SOX9, FOXG1-dependent manner. These results identify the role of transcriptional/epigenetic remodeling in EGFR-dependent pathogenesis and suggest a mechanistic basis for epigenetic therapy.
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Abstract
Glioblastoma is the most prevalent and malignant primary brain tumor, containing self-renewing, tumorigenic cancer stem cells (CSCs) that contribute to tumor initiation and therapeutic resistance. In this review, Lathia et al. discuss how the integration of genetics, epigenetics, and metabolism has shaped our understanding of how CSCs function to drive GBM growth. Tissues with defined cellular hierarchies in development and homeostasis give rise to tumors with cellular hierarchies, suggesting that tumors recapitulate specific tissues and mimic their origins. Glioblastoma (GBM) is the most prevalent and malignant primary brain tumor and contains self-renewing, tumorigenic cancer stem cells (CSCs) that contribute to tumor initiation and therapeutic resistance. As normal stem and progenitor cells participate in tissue development and repair, these developmental programs re-emerge in CSCs to support the development and progressive growth of tumors. Elucidation of the molecular mechanisms that govern CSCs has informed the development of novel targeted therapeutics for GBM and other brain cancers. CSCs are not self-autonomous units; rather, they function within an ecological system, both actively remodeling the microenvironment and receiving critical maintenance cues from their niches. To fulfill the future goal of developing novel therapies to collapse CSC dynamics, drawing parallels to other normal and pathological states that are highly interactive with their microenvironments and that use developmental signaling pathways will be beneficial.
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Affiliation(s)
- Justin D Lathia
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA; Department of Molecular Medicine, Cleveland Clinic, Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio 44195, USA
| | - Stephen C Mack
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| | - Erin E Mulkearns-Hubert
- Department of Cellular and Molecular Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| | - Claudia L L Valentim
- Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
| | - Jeremy N Rich
- Department of Molecular Medicine, Cleveland Clinic, Lerner College of Medicine of Case Western Reserve University, Cleveland, Ohio 44195, USA; Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio 44195, USA
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Perry C, Agarwal D, Abdel-Fatah TMA, Lourdusamy A, Grundy R, Auer DT, Walker D, Lakhani R, Scott IS, Chan S, Ball G, Madhusudan S. Dissecting DNA repair in adult high grade gliomas for patient stratification in the post-genomic era. Oncotarget 2015; 5:5764-81. [PMID: 25026297 PMCID: PMC4170616 DOI: 10.18632/oncotarget.2180] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Deregulation of multiple DNA repair pathways may contribute to aggressive biology and therapy resistance in gliomas. We evaluated transcript levels of 157 genes involved in DNA repair in an adult glioblastoma Test set (n=191) and validated in ‘The Cancer Genome Atlas’ (TCGA) cohort (n=508). A DNA repair prognostic index model was generated. Artificial neural network analysis (ANN) was conducted to investigate global gene interactions. Protein expression by immunohistochemistry was conducted in 61 tumours. A fourteen DNA repair gene expression panel was associated with poor survival in Test and TCGA cohorts. A Cox multivariate model revealed APE1, NBN, PMS2, MGMT and PTEN as independently associated with poor prognosis. A DNA repair prognostic index incorporating APE1, NBN, PMS2, MGMT and PTEN stratified patients in to three prognostic sub-groups with worsening survival. APE1, NBN, PMS2, MGMT and PTEN also have predictive significance in patients who received chemotherapy and/or radiotherapy. ANN analysis of APE1, NBN, PMS2, MGMT and PTEN revealed interactions with genes involved in transcription, hypoxia and metabolic regulation. At the protein level, low APE1 and low PTEN remain associated with poor prognosis. In conclusion, multiple DNA repair pathways operate to influence biology and clinical outcomes in adult high grade gliomas.
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Affiliation(s)
- Christina Perry
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, UK
| | - Devika Agarwal
- School of Science and Technology, Nottingham Trent University, Clifton Campus, Nottingham, UK
| | - Tarek M A Abdel-Fatah
- Department of Oncology, Nottingham University Hospitals, City Hospital Campus, Nottingham, UK
| | - Anbarasu Lourdusamy
- Children's Brain Tumour Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, UK
| | - Richard Grundy
- Children's Brain Tumour Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, UK
| | - Dorothee T Auer
- Department of Academic Radiology, University of Nottingham, Nottingham University Hospitals, Queen's Medical Centre, Nottingham, UK
| | - David Walker
- Children's Brain Tumour Research Centre, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, UK
| | - Ravi Lakhani
- University of Leicester Medical School, Maurice Shock Building, University Road, Leicester, UK
| | - Ian S Scott
- Department of Neuropathology, Nottingham University Hospitals, Queen's Medical Centre, Nottingham, UK
| | - Stephen Chan
- Department of Oncology, Nottingham University Hospitals, City Hospital Campus, Nottingham, UK
| | - Graham Ball
- School of Science and Technology, Nottingham Trent University, Clifton Campus, Nottingham, UK
| | - Srinivasan Madhusudan
- Academic Unit of Oncology, Division of Cancer and Stem Cells, School of Medicine, University of Nottingham, Nottingham University Hospitals, Nottingham, UK; Department of Oncology, Nottingham University Hospitals, City Hospital Campus, Nottingham, UK
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Jha P, Agrawal R, Pathak P, Kumar A, Purkait S, Mallik S, Suri V, Chand Sharma M, Gupta D, Suri A, Sharma BS, Julka PK, Kulshreshtha R, Sarkar C. Genome-wide small noncoding RNA profiling of pediatric high-grade gliomas reveals deregulation of several miRNAs, identifies downregulation of snoRNA cluster HBII-52 and delineates H3F3A and TP53 mutant-specific miRNAs and snoRNAs. Int J Cancer 2015; 137:2343-53. [PMID: 25994230 DOI: 10.1002/ijc.29610] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2014] [Accepted: 05/07/2015] [Indexed: 12/20/2022]
Abstract
Pediatric high-grade gliomas (HGGs) are highly malignant tumors that remain incurable and relatively understudied. The crucial role of noncoding RNAs (ncRNAs) has been reported in various cancers. However, the study on miRNAs in pediatric HGGs is scant and there is no report till date on the status of other small ncRNAs. Genome-wide microarray analysis was performed to investigate small ncRNA expression in pediatric HGG (n = 14) and compared to adult glioblastoma (GBM) signature. The validation of miRNAs and small nucleolar RNAs (snoRNAs) was done by real-time polymerase chain reaction. TP53 and H3F3A mutation-specific miRNA and snoRNA profiles were generated and analyzed. Pediatric HGGs showed upregulation of miR-17/92 and its paralog clusters (miR106b/25 and miR-106a/363), whereas majority of downregulated miRNAs belonged to miR379/656 cluster (14q32). Unsupervised hierarchical clustering identified two distinct groups. Interestingly, Group 2 with downregulated 14q32 cluster showed better overall survival. The miRNAs unique to pediatric HGG as compared to adult GBM were predicted to affect PDGFR and SMAD2/3 pathways. Similarities were seen between pediatric HGG and TP53 mutant miRNA profiles as compared to wild types. Several of H3F3A mutation-regulated genes were found to be the targets of H3F3A mutant-specific miRNAs. Remarkably, a significant downregulation of HBII-52 snoRNA cluster was found in pediatric HGGs, and was specific to H3F3A nonmutants. This is the first genome-wide profiling study on miRNAs and snoRNAs in pediatric HGGs with respect to H3F3A and TP53 mutations. The comparison of miRNA profiles of pediatric HGGs and adult GBM reiterates the overlaps and differences as also seen with their gene expression and methylation signatures.
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Affiliation(s)
- Prerana Jha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, New Delhi, India
| | - Rahul Agrawal
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, New Delhi, India
| | - Pankaj Pathak
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Anupam Kumar
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Suvendu Purkait
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Supriyo Mallik
- Department of Radiotherapy, Dr B R Ambedkar Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Vaishali Suri
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Mehar Chand Sharma
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
| | - Deepak Gupta
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - Ashish Suri
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - B S Sharma
- Department of Neurosurgery, All India Institute of Medical Sciences, New Delhi, India
| | - P K Julka
- Department of Radiotherapy, Dr B R Ambedkar Institute-Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Ritu Kulshreshtha
- Department of Biochemical Engineering and Biotechnology, Indian Institute of Technology, New Delhi, India
| | - Chitra Sarkar
- Department of Pathology, All India Institute of Medical Sciences, New Delhi, India
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MicroRNA Regulation of Brain Tumour Initiating Cells in Central Nervous System Tumours. Stem Cells Int 2015; 2015:141793. [PMID: 26064134 PMCID: PMC4433683 DOI: 10.1155/2015/141793] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 03/19/2015] [Accepted: 04/10/2015] [Indexed: 12/19/2022] Open
Abstract
CNS tumours occur in both pediatric and adult patients and many of these tumours are associated with poor clinical outcome. Due to a paradigm shift in thinking for the last several years, these tumours are now considered to originate from a small population of stem-like cells within the bulk tumour tissue. These cells, termed as brain tumour initiating cells (BTICs), are perceived to be regulated by microRNAs at the posttranscriptional/translational levels. Proliferation, stemness, differentiation, invasion, angiogenesis, metastasis, apoptosis, and cell cycle constitute some of the significant processes modulated by microRNAs in cancer initiation and progression. Characterization and functional studies on oncogenic or tumour suppressive microRNAs are made possible because of developments in sequencing and microarray techniques. In the current review, we bring recent knowledge of the role of microRNAs in BTIC formation and therapy. Special attention is paid to two highly aggressive and well-characterized brain tumours: gliomas and medulloblastoma. As microRNA seems to be altered in the pathogenesis of many human diseases, “microRNA therapy” may now have potential to improve outcomes for brain tumour patients. In this rapidly evolving field, further understanding of miRNA biology and its contribution towards cancer can be mined for new therapeutic tools.
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50
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Zhang J, Yang Y, Yang T, Yuan S, Wang R, Pan Z, Yang Y, Huang G, Gu F, Jiang B, Lin C, Zhou W. Double-negative feedback loop between microRNA-422a and forkhead box (FOX)G1/Q1/E1 regulates hepatocellular carcinoma tumor growth and metastasis. Hepatology 2015; 61:561-73. [PMID: 25251503 DOI: 10.1002/hep.27491] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/10/2014] [Accepted: 09/19/2014] [Indexed: 01/05/2023]
Abstract
UNLABELLED Growing evidence indicates that the aberrant expression of microRNAs (miRNAs) contributes to tumor development; however, the function of miRNAs in human hepatocellular carcinoma (HCC) remains largely undefined. In this study, we report that microRNA-422a (miR-422a) is significantly down-regulated in HCC tumor samples and cell lines compared with normal controls, and its expression level is negatively correlated with pathological grading, recurrence, and metastasis. The restoration of miR-422a expression in HCC tumor cells significantly inhibited cell proliferation and migration in vitro. At the same time, the overexpression of miR-422a in HCC tumor cells significantly inhibits tumor growth and liver metastasis in xenograft tumor models. A mechanistic study identified three genes, forkhead box G1 (FOXG1), FOXQ1, and FOXE1, as miR-422a targets in the regulation of HCC development. We also investigated the function of the three targets themselves in HCC tumorigenesis using RNAi manipulation and demonstrated that the knockdown of these targets led to significant inhibition of tumor cell proliferation and migration both in vitro and in vivo. More interestingly, a potential miR-422a promoter region was identified. Both the promoter activity and miR-422a expression were negatively regulated by the three targets, indicating that a double-negative feedback loop exists between miR-422a and its targets. Moreover, we explored the therapeutic potential of miR-422a in HCC treatment and found that the therapeutic delivery of miR-422a significantly inhibited tumor development in a xenograft tumor model and a diethylnitrosamine-induced primary HCC model. CONCLUSION Our findings show the critical roles of miR-422a and its targets--FOXG1, FOXQ1, and FOXE1--in the regulation of HCC development and provide new potential candidates for HCC therapy.
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Affiliation(s)
- Jin Zhang
- Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
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