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Romero-Trejo D, Mejía-Rodríguez R, Sierra-Mondragón E, Navarrete A, Pérez-Tapia M, González RO, Segovia J. The systemic administration of neural stem cells expressing an inducible and soluble form of growth arrest specific 1 inhibits mammary gland tumor growth and the formation of metastases. Cytotherapy 2020; 23:223-235. [PMID: 33168454 DOI: 10.1016/j.jcyt.2020.09.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 09/21/2020] [Accepted: 09/30/2020] [Indexed: 10/23/2022]
Abstract
BACKGROUND AIMS Metastasis to different organs is the major cause of death in breast cancer patients. The poor clinical prognosis and lack of successful treatments for metastatic breast cancer patients demand the development of new tumor-selective therapies. Thus, it is necessary to develop treatments capable of releasing therapeutic agents to both primary tumors and metastases that avoid toxic side effects in normal tissue, and neural stem cells are an attractive vehicle for tracking tumor cells and delivering anti-cancer agents. The authorspreviously demonstrated that a soluble form of growth arrest specific 1 (GAS1) inhibits the growth of triple-negative breast tumors and glioblastoma. METHODS In this study, the authors engineered ReNcell CX (EMD Millipore, Temecula, CA, USA) neural progenitor cells to express truncated GAS1 (tGAS1) under a tetracycline/on inducible system using lentiviral vectors. RESULTS Here the authors show that treatment with ReNcell-tGAS1 in combination with tetracycline decreased primary tumor growth and inhibited the formation of metastases in tumor-bearing mice by diminishing the phosphorylation of AKT and ERK1/2 in orthotopic mammary gland tumors. Moreover, the authors observed that ReNcell-tGAS1 prolonged the survival of 4T1 tumor-bearing mice. CONCLUSIONS These data suggest that the delivery of tGAS1 by ReNcell cells could be an effective adjuvant for the treatment of triple-negative breast cancer.
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Affiliation(s)
- Daniel Romero-Trejo
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, México
| | - Rosalinda Mejía-Rodríguez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, México
| | - Edith Sierra-Mondragón
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, México
| | - Araceli Navarrete
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, México
| | - Mayra Pérez-Tapia
- Departamento de Inmunología Escuela Nacional de Ciencias Biológicas, del Instituto Politécnico Nacional, México
| | - Rosa O González
- Departamento de Matemáticas, Universidad Autónoma Metropolitana-Iztapalapa (UAM-I), México
| | - José Segovia
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, México.
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Dong C, Wang X, Li N, Zhang K, Wang X, Zhang H, Wang H, Wang B, An M, Ma B. microRNA-mediated GAS1 downregulation promotes the proliferation of synovial fibroblasts by PI3K-Akt signaling in osteoarthritis. Exp Ther Med 2019; 18:4273-4286. [PMID: 31777535 PMCID: PMC6862556 DOI: 10.3892/etm.2019.8101] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 09/04/2019] [Indexed: 12/22/2022] Open
Abstract
Hyperplastic synovial fibroblasts (SFs) serve a critical role in the pathogenesis of knee osteoarthritis (OA); however, the molecular mechanism involved in OA during synovial tissue hyperproliferation remains unclear. Growth arrest-specific gene 1 (GAS1), a cell growth repressor gene, was found to be downregulated in OASFs according to previous preliminary experiments. It was therefore hypothesized that reduced GAS1 expression may participate in the hyperproliferation of SFs in OA development, downstream of possible microRNA (miR) regulation, in hyperplastic OASFs. In the present study, GAS1 expression was indeed decreased in OASFs and interleukin-1β-induced SFs by reverse transcription-quantitative PCR and western blot analysis. Further cell viability assays, cell cycle and apoptosis analyses revealed that the overexpression of GAS1 can inhibited proliferation, induced cell cycle arrest and promoted apoptosis in SFs. In contrast, GAS1 knockdown in SFs accelerated cell proliferation, enhanced cell cycle progression and suppressed apoptosis. Notably, the suppressive effects of GAS1 were mediated through the inactivation of the PI3K-Akt pathway. Finally, miR-34a-5p and miR-181a-5p were predicted and subsequently verified to directly target the 3′-untranslated region of the GAS1 gene, downregulating GAS1 levels in OASFs and IL-1β-induced SFs. In conclusion, the present study demonstrated that downregulation of GAS1 can lead to the hyperproliferation of SFs in OA pathogenesis through the PI3K-Akt pathway, and miR-34a-5p and miR-181a-5p are potential regulators of GAS1 expression in OA. Therefore, it may be promising to investigate the potential of GAS1 as a novel therapeutic target for preventing SF hyperplasia in OA.
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Affiliation(s)
- Chuan Dong
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Xinli Wang
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Nan Li
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Kailiang Zhang
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Xiaoyan Wang
- Department of Rheumatology and Immunology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang 150086, P.R. China
| | - Haomeng Zhang
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Haipeng Wang
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Bo Wang
- Department of Bone and Joint Diseases, Honghui Hospital of Xi'an Jiaotong University, College of Medicine, Xi'an, Shaanxi 710054, P.R. China
| | - Ming An
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
| | - Baoan Ma
- Department of Orthopedics, The Second Affiliated Hospital of The Air Force Medical University (Tangdu Hospital of Fourth Military Medical University), Xi'an, Shaanxi 710038, P.R. China
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Pérez-Sánchez G, Jiménez A, Quezada-Ramírez MA, Estudillo E, Ayala-Sarmiento AE, Mendoza-Hernández G, Hernández-Soto J, Hernández-Hernández FC, Cázares-Raga FE, Segovia J. Annexin A1, Annexin A2, and Dyrk 1B are upregulated during GAS1-induced cell cycle arrest. J Cell Physiol 2018; 233:4166-4182. [PMID: 29030970 DOI: 10.1002/jcp.26226] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 10/03/2017] [Indexed: 12/18/2022]
Abstract
GAS1 is a pleiotropic protein that has been investigated because of its ability to induce cell proliferation, cell arrest, and apoptosis, depending on the cellular or the physiological context in which it is expressed. At this point, we have information about the molecular mechanisms by which GAS1 induces proliferation and apoptosis; but very few studies have been focused on elucidating the mechanisms by which GAS1 induces cell arrest. With the aim of expanding our knowledge on this subject, we first focused our research on finding proteins that were preferentially expressed in cells arrested by serum deprivation. By using a proteomics approach and mass spectrometry analysis, we identified 17 proteins in the 2-DE protein profile of serum deprived NIH3T3 cells. Among them, Annexin A1 (Anxa1), Annexin A2 (Anxa2), dual specificity tyrosine-phosphorylation-regulated kinase 1B (Dyrk1B), and Eukaryotic translation initiation factor 3, F (eIf3f) were upregulated at transcriptional the level in proliferative NIH3T3 cells. Moreover, we demonstrated that Anxa1, Anxa2, and Dyrk1b are upregulated at both the transcriptional and translational levels by the overexpression of GAS1. Thus, our results suggest that the upregulation of Anxa1, Anxa2, and Dyrk1b could be related to the ability of GAS1 to induce cell arrest and maintain cell viability. Finally, we provided further evidence showing that GAS1 through Dyrk 1B leads not only to the arrest of NIH3T3 cells but also maintains cell viability.
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Affiliation(s)
- Gilberto Pérez-Sánchez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Adriana Jiménez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Marco A Quezada-Ramírez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Enrique Estudillo
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Alberto E Ayala-Sarmiento
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | | | - Justino Hernández-Soto
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Fidel C Hernández-Hernández
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Febe E Cázares-Raga
- Departamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
| | - Jose Segovia
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, México
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Sun XL, Chen BY, Zhao HK, Cheng YY, Zheng MH, Duan L, Jiang W, Chen LW. Gas1 up-regulation is inducible and contributes to cell apoptosis in reactive astrocytes in the substantia nigra of LPS and MPTP models. J Neuroinflammation 2016; 13:180. [PMID: 27391369 PMCID: PMC4938987 DOI: 10.1186/s12974-016-0643-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 06/27/2016] [Indexed: 02/08/2023] Open
Abstract
Background Reactive astrogliosis is a remarkable pathogenetic hallmark of the brains of Parkinson’s disease (PD) patients, but its progressive fate and regulation mechanisms are poorly understood. In this study, growth arrest specific 1 (Gas1), a tumor growth suppressor oncogene, was identified as a novel modulator of the cell apoptosis of reactive astrocytes in primary culture and the injured substantia nigra. Methods Animal models and cell cultures were utilized in the present study. Lipopolysaccharide (LPS)- and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP)-treated animal models were used to detect Gas1 expression in the brain via immunohistochemistry and western blot. Cell cultures were performed to analyze Gas1 functions in the viability and apoptosis of reactive astrocytes and SH-SY5Y cells by double labeling, CCK-8, LDH, TUNEL, flow cytometry, and siRNA knockdown methods. Results Gas1 expressions were significantly elevated in the majority of the reactive astrocytes of the brains with LPS or MPTP insults. In the injured substantia nigras, GFAP-positive astrocytes exhibited higher levels of cleaved caspase-3. In cell culture, the up-regulated Gas1 expression induced apoptosis of reactive astrocytes that were insulted by LPS in combination with interferon-γ and tumor necrosis factor-a. This effect was confirmed through siRNA knockdown of Gas1 gene expression. Finally and interestingly, the potential underlying signaling pathways were evidently related to an increase in the Bax/Bcl-2 ratio, the abundant generation of reactive oxygen species and the activation of cleaved caspase-3. Conclusions This study demonstrated that the up-regulation of inducible Gas1 contributed to the apoptosis of reactive astrocytes in the injured nigra. Gas1 signaling may function as a novel regulator of astrogliosis and is thus a potential intervention target for inflammatory events in PD conditions. Electronic supplementary material The online version of this article (doi:10.1186/s12974-016-0643-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiao-Long Sun
- Institute of Neurosciences, Department of Neurobiology and Collaborative Innovation Center for Brain Science, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China.,Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Bei-Yu Chen
- Department of Orthopedics, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Hai-Kang Zhao
- Department of Neurosurgery, Second Affiliated Hospital, Xi'an Medical University, Xi'an, 710038, China
| | - Ying-Ying Cheng
- Department of Neurosurgery, Second Affiliated Hospital, Xi'an Medical University, Xi'an, 710038, China
| | - Min-Hua Zheng
- Department of Developmental Biology and Genetics, Fourth Military Medical University, Xi'an, China
| | - Li Duan
- Institute of Neurosciences, Department of Neurobiology and Collaborative Innovation Center for Brain Science, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China
| | - Wen Jiang
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, China.
| | - Liang-Wei Chen
- Institute of Neurosciences, Department of Neurobiology and Collaborative Innovation Center for Brain Science, School of Basic Medicine, Fourth Military Medical University, Xi'an, 710032, China.
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Ayala-Sarmiento AE, Estudillo E, Pérez-Sánchez G, Sierra-Sánchez A, González-Mariscal L, Martínez-Fong D, Segovia J. GAS1 is present in the cerebrospinal fluid and is expressed in the choroid plexus of the adult rat. Histochem Cell Biol 2016; 146:325-36. [PMID: 27225491 DOI: 10.1007/s00418-016-1449-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/11/2016] [Indexed: 12/19/2022]
Abstract
Growth arrest specific 1 (GAS1) is a GPI-anchored protein that inhibits proliferation when overexpressed in tumors but during development it promotes proliferation and survival of different organs and tissues. This dual ability is caused by its capacity to interact both by inhibiting the signaling induced by the glial cell line-derived neurotrophic factor and by facilitating the activity of the sonic hedgehog pathway. GAS1 is expressed as membrane bound in different organs and as a secreted form by glomerular mesangial cells. In the developing central nervous system, GAS1 is found in neural progenitors; however, it continues to be expressed in the adult brain. Here, we demonstrate that soluble GAS1 is present in the cerebrospinal fluid (CSF) and it is expressed in the choroid plexus (CP) of the adult rat, the main producer of CSF. Additionally, we confirm the presence of GAS1 in blood plasma and liver of the adult rat, the principal source of blood plasma proteins. The pattern of expression of GAS1 is perivascular in both the CP and the liver. In vitro studies show that the fibroblast cell line NIH/3T3 expresses one form of GAS1 and releases two soluble forms into the supernatant. Briefly, in the present work, we show the presence of GAS1 in adult rat body fluids focusing in the CSF and the CP, and suggest that secreted GAS1 exists as two different isoforms.
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Affiliation(s)
- Alberto E Ayala-Sarmiento
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico
| | - Enrique Estudillo
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico
| | - Gilberto Pérez-Sánchez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico
| | - Arturo Sierra-Sánchez
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico
| | - Lorenza González-Mariscal
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico
| | - Daniel Martínez-Fong
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico
| | - José Segovia
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. IPN #2508, 07360, Mexico, D.F., Mexico.
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Ren YA, Liu Z, Mullany LK, Fan CM, Richards JS. Growth Arrest Specific-1 (GAS1) Is a C/EBP Target Gene That Functions in Ovulation and Corpus Luteum Formation in Mice. Biol Reprod 2016; 94:44. [PMID: 26740594 PMCID: PMC4787628 DOI: 10.1095/biolreprod.115.133058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 12/30/2015] [Indexed: 12/12/2022] Open
Abstract
Ovulation and luteinization are initiated in preovulatory follicles by the luteinizing hormone (LH) surge; however, the signaling events that mediate LH actions in these follicles remain incompletely defined. Two key transcription factors that are targets of LH surge are C/EBPalpha and C/EBPbeta, and their depletion in granulosa cells results in complete infertility. Microarray analyses of these mutant mice revealed altered expression of a number of genes, including growth arrest specific-1 (Gas1). To investigate functions of Gas1 in ovulation- and luteinization-related processes, we crossed Cyp19a1-Cre and Gas1flox/flox mice to conditionally delete Gas1 in granulosa and cumulus cells. While expression of Gas1 is dramatically increased in granulosa and cumulus cells around 12–16 h post-human chorionic gonadotropin (hCG) stimulation in wild-type mice, this increase is abolished in Cebpa/b double mutant and in Gas1 mutant mice. GAS1 is also dynamically expressed in stromal cells of the ovary independent of C/EBPalpha/beta. Female Gas1 mutant mice are fertile, exhibit enhanced rates of ovulation, increased fertility, and higher levels of Areg and Lhcgr mRNA in granulosa cells. The morphological appearance and vascularization of corpora lutea appeared normal in these mutant females. Interestingly, levels of mRNA for a number of genes (Cyp11a1, Star, Wnt4, Prlr, Cd52, and Sema3a) associated with luteinization are decreased in corpora lutea of Gas1 mutant mice as compared with controls at 24 h post-hCG; these differences were no longer detectable by 48 h post-hCG. The C/EBP target Gas1 is induced in granulosa cells and is associated with ovulation and luteinization.
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Affiliation(s)
- Yi A Ren
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Zhilin Liu
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Lisa K Mullany
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
| | - Chen-Ming Fan
- Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland
| | - JoAnne S Richards
- Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas
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Estudillo E, Zavala P, Pérez-Sánchez G, Ayala-Sarmiento AE, Segovia J. Gas1 is present in germinal niches of developing dentate gyrus and cortex. Cell Tissue Res 2015; 364:369-84. [DOI: 10.1007/s00441-015-2338-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 11/26/2015] [Indexed: 01/27/2023]
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Sacilotto N, Castillo J, Riffo-Campos ÁL, Flores JM, Hibbitt O, Wade-Martins R, López C, Rodrigo MI, Franco L, López-Rodas G. Growth Arrest Specific 1 (Gas1) Gene Overexpression in Liver Reduces the In Vivo Progression of Murine Hepatocellular Carcinoma and Partially Restores Gene Expression Levels. PLoS One 2015; 10:e0132477. [PMID: 26161998 PMCID: PMC4498802 DOI: 10.1371/journal.pone.0132477] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 06/15/2015] [Indexed: 12/29/2022] Open
Abstract
The prognosis of hepatocellular carcinoma patients is usually poor, the size of tumors being a limiting factor for surgical treatments. Present results suggest that the overexpression of Gas1 (growth arrest specific 1) gene reduces the size, proliferating activity and malignancy of liver tumors. Mice developing diethylnitrosamine-induced hepatocellular carcinoma were subjected to hydrodynamic gene delivery to overexpress Gas1 in liver. This treatment significantly (p < 0.05) reduced the number of large tumors, while the difference in the total number of lesions was not significant. Moreover, the number of carcinoma foci in the liver and the number of lung metastases were reduced. These results are related with the finding that overexpression of Gas1 in Hepa 1-6 cells arrests cell cycle before S phase, with a significant (p < 0.01) and concomitant reduction in the expression of cyclin E2 gene. In addition, a triangular analysis of microarray data shows that Gas1 overexpression restores the transcription levels of 150 genes whose expression was affected in the diethylnitrosamine-induced tumors, thirteen of which are involved in the hedgehog signaling pathway. Since the in vivo Gas1 gene delivery to livers of mice carrying hepatocellular carcinoma reduces the size and proliferating activity of tumors, partially restoring the transcriptional profile of the liver, the present study opens promising insights towards a therapeutic approach for hepatocellular carcinoma.
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Affiliation(s)
- Natalia Sacilotto
- Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
| | - Josefa Castillo
- Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
- Institute of Health Research INCLIVA, Valencia, Spain
| | - Ángela L. Riffo-Campos
- Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
- Institute of Health Research INCLIVA, Valencia, Spain
| | - Juana M. Flores
- Department of Medicine and Animal Surgery, University Complutense, Madrid, Spain
| | - Olivia Hibbitt
- Department of Physiology, Anatomy and Genetics, Oxford University, Oxford, United Kingdom
| | - Richard Wade-Martins
- Department of Physiology, Anatomy and Genetics, Oxford University, Oxford, United Kingdom
| | - Carlos López
- Department of Cell Biology, University of Valencia, Burjassot, Valencia, Spain
| | - M. Isabel Rodrigo
- Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
- Institute of Health Research INCLIVA, Valencia, Spain
| | - Luis Franco
- Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
- Institute of Health Research INCLIVA, Valencia, Spain
- * E-mail:
| | - Gerardo López-Rodas
- Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
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The Internalization of Neurotensin by the Low-Affinity Neurotensin Receptors (NTSR2 and vNTSR2) Activates ERK 1/2 in Glioma Cells and Allows Neurotensin-Polyplex Transfection of tGAS1. Cell Mol Neurobiol 2015; 35:785-95. [DOI: 10.1007/s10571-015-0172-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 03/07/2015] [Indexed: 01/14/2023]
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10
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Jiménez A, López-Ornelas A, Estudillo E, González-Mariscal L, González RO, Segovia J. A soluble form of GAS1 inhibits tumor growth and angiogenesis in a triple negative breast cancer model. Exp Cell Res 2014; 327:307-17. [DOI: 10.1016/j.yexcr.2014.06.016] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 06/04/2014] [Accepted: 06/22/2014] [Indexed: 12/18/2022]
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López-Ornelas A, Vergara P, Segovia J. Neural stem cells producing an inducible and soluble form of Gas1 target and inhibit intracranial glioma growth. Cytotherapy 2014; 16:1011-23. [DOI: 10.1016/j.jcyt.2013.12.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2013] [Revised: 11/19/2013] [Accepted: 12/12/2013] [Indexed: 01/14/2023]
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Zarco N, Bautista E, Cuéllar M, Vergara P, Flores-Rodriguez P, Aguilar-Roblero R, Segovia J. Growth arrest specific 1 (GAS1) is abundantly expressed in the adult mouse central nervous system. J Histochem Cytochem 2013; 61:731-48. [PMID: 23813868 DOI: 10.1369/0022155413498088] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Growth arrest specific 1 (GAS1) is a pleiotropic protein that induces apoptosis and cell arrest in different tumors, but it is also involved in the development of the nervous system and other tissues and organs. This dual ability is likely caused by its capacity to interact both by inhibiting the intracellular signaling cascade induced by glial cell-line derived neurotrophic factor and by facilitating the activity of the sonic hedgehog pathway. The presence of GAS1 mRNA has been described in adult mouse brain, and here we corroborated this observation. We then proceeded to determine the distribution of the protein in the adult central nervous system (CNS). We detected, by western blot analysis, expression of GAS1 in olfactory bulb, caudate-putamen, cerebral cortex, hippocampus, mesencephalon, medulla oblongata, cerebellum, and cervical spinal cord. To more carefully map the expression of GAS1, we performed double-label immunohistochemistry and noticed expression of GAS1 in neurons in all brain areas examined. We also observed expression of GAS1 in astroglial cells, albeit the pattern of expression was more restricted than that seen in neurons. Briefly, in the present article, we report the widespread distribution and cellular localization of the GAS1 native protein in adult mammalian CNS.
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Affiliation(s)
- Natanael Zarco
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN (NZ,EB,PV,PF-R,JS)
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Zarco N, González-Ramírez R, González RO, Segovia J. GAS1 induces cell death through an intrinsic apoptotic pathway. Apoptosis 2012; 17:627-35. [DOI: 10.1007/s10495-011-0696-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Sacilotto N, Espert A, Castillo J, Franco L, López-Rodas G. Epigenetic transcriptional regulation of the growth arrest-specific gene 1 (Gas1) in hepatic cell proliferation at mononucleosomal resolution. PLoS One 2011; 6:e23318. [PMID: 21858068 PMCID: PMC3153484 DOI: 10.1371/journal.pone.0023318] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 07/15/2011] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND Gas1 (growth arrest-specific 1) gene is known to inhibit cell proliferation in a variety of models, but its possible implication in regulating quiescence in adult tissues has not been examined to date. The knowledge of how Gas1 is regulated in quiescence may contribute to understand the deregulation occurring in neoplastic diseases. METHODOLOGY/PRINCIPAL FINDINGS Gas1 expression has been studied in quiescent murine liver and during the naturally synchronized cell proliferation after partial hepatectomy. Chromatin immunoprecipitation at nucleosomal resolution (Nuc-ChIP) has been used to carry out the study preserving the in vivo conditions. Transcription has been assessed at real time by quantifying the presence of RNA polymerase II in coding regions (RNApol-ChIP). It has been found that Gas1 is expressed not only in quiescent liver but also at the cell cycle G(1)/S transition. The latter expression peak had not been previously reported. Two nucleosomes, flanking a nucleosome-free region, are positioned close to the transcription start site. Both nucleosomes slide in going from the active to the inactive state and vice versa. Nuc-ChIP analysis of the acquisition of histone epigenetic marks show distinctive features in both active states: H3K9ac and H3K4me2 are characteristic of transcription in G(0) and H4R3me2 in G(1)/S transition. Sequential-ChIP analysis revealed that the "repressing" mark H3K9me2 colocalize with several "activating" marks at nucleosome N-1 when Gas1 is actively transcribed suggesting a greater plasticity of epigenetic marks than proposed until now. The recruitment of chromatin-remodeling or modifying complexes also displayed distinct characteristics in quiescence and the G(1)/S transition. CONCLUSIONS/SIGNIFICANCE The finding that Gas1 is transcribed at the G(1)/S transition suggests that the gene may exert a novel function during cell proliferation. Transcription of this gene is modulated by specific "activating" and "repressing" epigenetic marks, and by chromatin remodeling and histone modifying complexes recruitment, at specific nucleosomes in Gas1 promoter.
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Affiliation(s)
- Natalia Sacilotto
- Chromatin Laboratory, Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
| | - Antonio Espert
- Chromatin Laboratory, Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
| | - Josefa Castillo
- Chromatin Laboratory, Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
| | - Luis Franco
- Chromatin Laboratory, Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
| | - Gerardo López-Rodas
- Chromatin Laboratory, Department of Biochemistry and Molecular Biology, University of Valencia, Burjassot, Valencia, Spain
- * E-mail: .
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Arregui L, Benítez JA, Razgado LF, Vergara P, Segovia J. Adenoviral astrocyte-specific expression of BDNF in the striata of mice transgenic for Huntington's disease delays the onset of the motor phenotype. Cell Mol Neurobiol 2011; 31:1229-43. [PMID: 21681558 DOI: 10.1007/s10571-011-9725-y] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2011] [Accepted: 06/03/2011] [Indexed: 10/18/2022]
Abstract
Huntington's disease (HD) is a neurodegenerative disorder characterized by motor, cognitive, and psychiatric symptoms. The most characteristic structural feature of this disease is neurodegeneration accompanied by gliosis in the striatum. BDNF has been proposed to protect striatal neurons from degeneration, because it is an important survival factor for these neurons from development to adulthood. Considering the extensive gliosis and the survival effects of BDNF, we constructed an adenovirus to express a BDNF cDNA in astrocyte cells using a promoter of the glial fibrillary acidic protein gene. Cells stably transfected in vitro with a BDNF cDNA driven by this promoter expressed BDNF and responded to external stimuli increasing BDNF production. When the vector was applied into the striata of mice transgenic for HD, long-term expression of the transgene was observed, associated with a delay of onset of the motor phenotype of the R6/2 HD transgenic mice. The present data indicate that the striatal expression of BDNF is a potential adjuvant for the treatment of HD.
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Affiliation(s)
- Leticia Arregui
- Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del IPN, Av. Instituto Politécnico Nacional # 2508, 07360 Mexico, DF, Mexico
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Lentiviral transfer of an inducible transgene expressing a soluble form of Gas1 causes glioma cell arrest, apoptosis and inhibits tumor growth. Cancer Gene Ther 2010; 18:87-99. [DOI: 10.1038/cgt.2010.54] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Cazzin C, Ring CJA. Recent advances in the manipulation of murine gene expression and its utility for the study of human neurological disease. Biochim Biophys Acta Mol Basis Dis 2009; 1802:796-807. [PMID: 20004244 DOI: 10.1016/j.bbadis.2009.11.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2009] [Revised: 11/24/2009] [Accepted: 11/25/2009] [Indexed: 12/11/2022]
Abstract
Transgenic mouse models have vastly contributed to our knowledge of the genetic and molecular pathways underlying the pathogenesis of neurological disorders that affect millions of people worldwide. Not only have they allowed the generation of disease models mimicking the human pathological state but they have also permitted the exploration of the pathological role of specific genes through the generation of knock-out and knock-in models. Classical constitutive transgenic mice have several limitations however, due to behavioral adaptation process occurring and conditional mouse models are time-consuming and often lack extensive spatial or temporal control of gene manipulation. These limitations could be overcome by means of innovative methods that are now available such as RNAi, viral vectors and large cloning DNA vectors. These tools have been extensively used for the generation of mouse models and are characterized by the superior control of transgene expression that has been proven invaluable in the assessment of novel treatments for neurological diseases and to further investigate the molecular processes underlying the etiopathology of neurological disorders. Furthermore, in association with classical transgenic mouse models, they have allowed the validation of innovative therapeutic strategies for the treatment of human neurological disorders. This review describes how these tools have overcome the limitations of classical transgenic mouse models and how they have been of value for the study of human neurological diseases.
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Affiliation(s)
- Chiara Cazzin
- Biology Department A&S DPU, Neuroscience CEDD, GlaxoSmithKline, Medicines Research Center, Verona, Italy.
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Wang L, Sun Y, Jiang M, Zhang S, Wolfl S. FOS proliferating network construction in early colorectal cancer (CRC) based on integrative significant function cluster and inferring analysis. Cancer Invest 2009; 27:816-24. [PMID: 19557575 DOI: 10.1080/07357900802672753] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The aim is to setup single distinguished molecular network. We constructed FOS proliferating network from 22 colorectal samples of the same GEO dataset by GRNInfer tool and DAVID based on linear programming and a decomposition procedure with integrated Kappa statistics and fuzzy heuristic clustering. In the control, we found no proliferating subnetwork. In CRC, we identified one FOS proliferating module (SFRP2, ADAMTS1, SYNPO2, VIP, ADAM33 inhibition to FOS and MGP, FOSB activation to FOS. FOS activation to IGFBP5, LGI1, GAS1 and FOS inhibition to VIP). These results may be useful for developing novel prognostic markers and therapeutic targets in CRC.
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Affiliation(s)
- Lin Wang
- Center for Biomedical Engineering, Beijing University of Posts and Telecommunications, China.
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Abstract
Cancer gene therapy is based on the transfer of genetic material to cancer cells to modify a normal or abnormal cellular function, or to induce cell death. Modified viruses or stem cells have been used as carriers to transfer the genetic material to cancer cells avoiding trafficking through normal cells. However, although the current vectors have been successful in delivering genes in vitro and in vivo, little has been achieved with human cerebral gliomas. Poor transduction efficiency of viruses in human glioma cells and limited spread and distribution to the tumor limits our current expectations for successful gene therapy of central nervous system cancer until and if effective transfer vehicles are available. Nevertheless, continuing research in better vector development may overcome these limitations and offer a therapeutic advantage over the standard therapies for glioma.
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Gas1 inhibits cell proliferation and induces apoptosis of human primary gliomas in the absence of Shh. Int J Dev Neurosci 2009; 27:305-13. [DOI: 10.1016/j.ijdevneu.2009.03.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2009] [Revised: 03/16/2009] [Accepted: 03/26/2009] [Indexed: 11/21/2022] Open
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Benítez J, Arregui L, Cabrera G, Segovia J. Valproic acid induces polarization, neuronal-like differentiation of a subpopulation of C6 glioma cells and selectively regulates transgene expression. Neuroscience 2008; 156:911-20. [DOI: 10.1016/j.neuroscience.2008.07.065] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2008] [Revised: 07/15/2008] [Accepted: 07/31/2008] [Indexed: 11/30/2022]
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Gas1 reduces Ret tyrosine 1062 phosphorylation and alters GDNF‐mediated intracellular signaling. Int J Dev Neurosci 2008; 26:497-503. [DOI: 10.1016/j.ijdevneu.2008.02.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Revised: 02/18/2008] [Accepted: 02/18/2008] [Indexed: 11/22/2022] Open
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