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Campo Verde Arbocco F, Pascual LI, García D, Ortiz I, Gamarra-Luques C, Carón RW, Hapon MB. Epigenetic impact of hypothyroidism on the functional differentiation of the mammary gland in rats. Mol Cell Endocrinol 2024; 590:112267. [PMID: 38729597 DOI: 10.1016/j.mce.2024.112267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 04/18/2024] [Accepted: 05/02/2024] [Indexed: 05/12/2024]
Abstract
Mammary gland (MG) lactogenic differentiation involves epigenetic mechanisms. We have previously shown that hypothyroidism (HypoT) alters the MG transcriptome in lactation. However, the role of thyroid hormones (T3 and T4 a. k.a. THs) in epigenetic differentiation of MG is still unknown. We used a model of post-lactating HypoT rats to study in MG: a) Methylation and expression level of Gata3, Elf5, Stat6, Stat5a, Stat5b; b) Expression of Lalba, IL-4Rα and Ncoa1 mRNA; c) Histone H3 acetylation and d) Estrogen and progesterone concentration in serum. HypoT increases the estrogen serum level, decreases the progesterone level, promotes methylation of Stat5a, Stat5b and Stat6, decreasing their mRNA level and of its target genes (Lalba and IL-4Rα) and increases the Ncoa1 mRNA expression and histone H3 acetylation level. Our results proved that HypoT alters the post-lactation MG epigenome and could compromise mammary functional differentiation.
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Affiliation(s)
- Fiorella Campo Verde Arbocco
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina; Universidad de Mendoza, Facultad de Ciencias Médicas, Argentina.
| | - Lourdes Inés Pascual
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina
| | - Daiana García
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina
| | - Irina Ortiz
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina
| | - Carlos Gamarra-Luques
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina; Universidad Nacional de Cuyo, Facultad de Ciencias Médicas, Mendoza, Argentina
| | - Rubén Walter Carón
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina
| | - María Belén Hapon
- Instituto de Medicina y Biología Experimental de Cuyo (IMBECU, CONICET) Mendoza, Argentina; Universidad Nacional de Cuyo, Facultad de Ciencias Exactas y Naturales, Mendoza, Argentina
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Ivanenko KA, Prassolov VS, Khabusheva ER. Transcription Factor Sp1 in the Expression of Genes Encoding Components of Mapk, JAK/STAT, and PI3K/Akt Signaling Pathways. Mol Biol 2022. [DOI: 10.1134/s0026893322050089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Waszczykowska K, Prażanowska K, Kałuzińska Ż, Kołat D, Płuciennik E. Discovering biomarkers for hormone-dependent tumors: in silico study on signaling pathways implicated in cell cycle and cytoskeleton regulation. Mol Genet Genomics 2022; 297:947-963. [PMID: 35532795 DOI: 10.1007/s00438-022-01900-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 04/16/2022] [Indexed: 02/07/2023]
Abstract
Malignancies dependent on hormone homeostasis include breast, ovary, cervical, prostate, testis and uterine tumors. Hormones are involved in signal transduction which orchestrate processes, such as apoptosis, proliferation, cell cycle or cytoskeleton organization. Currently, there is a need for novel biomarkers which would help to diagnose cancers efficiently. In this study, the genes implicated in signaling that is important in hormone-sensitive carcinogenesis were investigated regarding their prognostic significance. Data of seven cancer cohorts were collected from FireBrowse. 54 gene sets implicated in specific pathways were browsed through MSig database. Profiling was assessed via Monocle3, while gene ontology through PANTHER. For confirmation, correlation analysis was performed using WGCNA. Protein-protein networks were visualized via Cytoscape and impact of genes on survival, as well as cell cycle or cytoskeleton-related prognostic signatures, was tested. Several differences in expression profile were identified, some of them allowed to distinguish histology. Functional annotation revealed that various regulation of cell cycle, adhesion, migration, apoptosis and angiogenesis underlie these differences. Clinical traits, such as histological type or cancer staging, were found during evaluation of module-trait relationships. Of modules, the TopHubs (COL6A3, TNR, GTF2A1, NKX3-1) interacted directly with, e.g., PDGFB, ITGA10, SP1 or AKT3. Among TopHubs and interacting proteins, many showed an impact on hazard ratio and affected the cell cycle or cytoskeleton-related prognostic signatures, e.g., COL1A1 or PDGFB. In conclusion, this study laid the foundation for further hormone-sensitive carcinogenesis research through identification of genes which prove that crosstalk between cell cycle and cytoskeleton exists, opening avenues for future therapeutic strategies.
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Affiliation(s)
| | - Karolina Prażanowska
- Faculty of Biomedical Sciences, Medical University of Lodz, 90-752, Lodz, Poland
| | - Żaneta Kałuzińska
- Department of Molecular Carcinogenesis, Medical University of Lodz, 90-752, Lodz, Poland.
| | - Damian Kołat
- Department of Molecular Carcinogenesis, Medical University of Lodz, 90-752, Lodz, Poland
| | - Elżbieta Płuciennik
- Department of Molecular Carcinogenesis, Medical University of Lodz, 90-752, Lodz, Poland
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Bai J, Luo Y, Zhang S. Microarray data analysis reveals gene expression changes in response to ionizing radiation in MCF7 human breast cancer cells. Hereditas 2020; 157:37. [PMID: 32883354 PMCID: PMC7650302 DOI: 10.1186/s41065-020-00151-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 08/26/2020] [Indexed: 12/12/2022] Open
Abstract
Background The aim of this study was to identify potential therapeutic target genes for breast cancer (BC) by the investigation of gene expression changes after ionizing radiation (IR) in BC cells. Gene expression profile GSE21748, including BC cell line MCF-7 samples at different time points after IR treatment, were downloaded from Gene Expression Omnibus. Differentially expressed genes (DEGs) were identified in different time points following IR compared with cell samples before IR, respectively. Gene ontology functions and The Kyoto Encyclopedia of Genes and Genomes pathways of the overlapping DEGs were enriched using DAVID. Transcription factor (TFs)-encoding genes were identified from the overlapping DEGs, followed by construction of transcriptional regulatory network and co-expression network. Results A total of 864 overlapping DEGs were identified, which were significantly enriched in regulation of cell proliferation and apoptosis, and cell cycle process. We found that FOXD1, STAT6, XBP1, STAT2, LMO2, TFAP4, STAT3, STAT1 were hub nodes in the transcriptional regulatory network of the overlapping DEGs. The co-expression network of target genes regulated by STAT3, STAT1, STAT6 and STAT2 included some key genes such as BCL2L1. Conclusion STAT1, STAT2, STAT3, STAT6, XBP1, BCL2L1, CYB5D2, ESCO2, and PARP2 were significantly affected by IR and they may be used as therapeutic gene targets in the treatment of BC.
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Affiliation(s)
- Jing Bai
- Department of Gynaecology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang Central People's Hospital, Yichang, 443000, Hubei, China
| | - Youzhen Luo
- Department of Gynaecology, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang Central People's Hospital, Yichang, 443000, Hubei, China
| | - Shengchu Zhang
- Department of Thyroid and Breast Surgery, The First College of Clinical Medical Sciences, China Three Gorges University, Yichang Central People's Hospital, No. 183 Yiling Road, Wujia District, Yichang, 443000, Hubei, China.
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STAT6 deficiency ameliorates Graves' disease severity by suppressing thyroid epithelial cell hyperplasia. Cell Death Dis 2016; 7:e2506. [PMID: 27906181 PMCID: PMC5260978 DOI: 10.1038/cddis.2016.398] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 10/30/2016] [Accepted: 11/02/2016] [Indexed: 01/02/2023]
Abstract
Signal transducer and activator of transcription 6 (STAT6) is involved in epithelial cell growth. However, little is known regarding the STAT6 phosphorylation status in Graves' disease (GD) and its role in thyroid epithelial cells (TECs). In this study, we found that STAT6 phosphorylation (p-STAT6) was significantly increased in TECs from both GD patients and experimental autoimmune Graves' disease mice and that STAT6 deficiency ameliorated GD symptoms. Autocrine IL-4 signalling in TECs activated the phosphorylation of STAT6 via IL-4 R engagement, and the downstream targets of STAT6 were Bcl-xL and cyclin D1. Thus, the IL-4-STAT6-Bcl-xL/cyclin D1 pathway is crucial for TEC hyperplasia, which aggravates GD. More importantly, in vitro and in vivo experiments demonstrated that STAT6 phosphorylation inhibited by AS1517499 decreased TEC hyperplasia, thereby reducing serum T3 and T4 and ameliorating GD. Thus, our study reveals that in addition to the traditional pathogenesis of GD, in which autoantibody TRAb stimulates thyroid-stimulating hormone receptors and consequently produces T3, T4, TRAb could also trigger TECs producing IL-4, and IL-4 then acts in an autocrine manner to activate p-STAT6 signalling and stimulate unrestricted cell growth, thus aggravating GD. These findings suggest that STAT6 inhibitors could be potent therapeutics for treating GD.
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Anania VG, Yu K, Gnad F, Pferdehirt RR, Li H, Ma TP, Jeon D, Fortelny N, Forrest W, Ashkenazi A, Overall CM, Lill JR. Uncovering a Dual Regulatory Role for Caspases During Endoplasmic Reticulum Stress-induced Cell Death. Mol Cell Proteomics 2016; 15:2293-307. [PMID: 27125827 PMCID: PMC4937505 DOI: 10.1074/mcp.m115.055376] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Indexed: 12/13/2022] Open
Abstract
Many diseases are associated with endoplasmic reticulum (ER) stress, which results from an accumulation of misfolded proteins. This triggers an adaptive response called the "unfolded protein response" (UPR), and prolonged exposure to ER stress leads to cell death. Caspases are reported to play a critical role in ER stress-induced cell death but the underlying mechanisms by which they exert their effect continue to remain elusive. To understand the role caspases play during ER stress, a systems level approach integrating analysis of the transcriptome, proteome, and proteolytic substrate profile was employed. This quantitative analysis revealed transcriptional profiles for most human genes, provided information on protein abundance for 4476 proteins, and identified 445 caspase substrates. Based on these data sets many caspase substrates were shown to be downregulated at the protein level during ER stress suggesting caspase activity inhibits their cellular function. Additionally, RNA sequencing revealed a role for caspases in regulation of ER stress-induced transcriptional pathways and gene set enrichment analysis showed expression of multiple gene targets of essential transcription factors to be upregulated during ER stress upon inhibition of caspases. Furthermore, these transcription factors were degraded in a caspase-dependent manner during ER stress. These results indicate that caspases play a dual role in regulating the cellular response to ER stress through both post-translational and transcriptional regulatory mechanisms. Moreover, this study provides unique insight into progression of the unfolded protein response into cell death, which may help identify therapeutic strategies to treat ER stress-related diseases.
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Affiliation(s)
| | - Kebing Yu
- From the Departments of ‡Protein Chemistry
| | | | | | | | | | - Diana Jeon
- From the Departments of ‡Protein Chemistry
| | - Nikolaus Fortelny
- ‖Departments of Oral Biological and Medical Sciences, and University of British Columbia, Vancouver, British Columbia, Canada
| | | | | | - Christopher M Overall
- ‖Departments of Oral Biological and Medical Sciences, and University of British Columbia, Vancouver, British Columbia, Canada
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