1
|
Morozov VM, Riva A, Sarwar S, Kim WJ, Li J, Zhou L, Licht J, Daaka Y, Ishov A. HIRA-mediated loading of histone variant H3.3 controls androgen-induced transcription by regulation of AR/BRD4 complex assembly at enhancers. Nucleic Acids Res 2023; 51:10194-10217. [PMID: 37638746 PMCID: PMC10602887 DOI: 10.1093/nar/gkad700] [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: 05/03/2023] [Revised: 07/21/2023] [Accepted: 08/14/2023] [Indexed: 08/29/2023] Open
Abstract
Incorporation of histone variant H3.3 comprises active territories of chromatin. Exploring the function of H3.3 in prostate cancer (PC), we found that knockout (KO) of H3.3 chaperone HIRA suppresses PC growth in vitro and in xenograft settings, deregulates androgen-induced gene expression and alters androgen receptor (AR) binding within enhancers of target genes. H3.3 affects transcription in multiple ways, including activation of p300 by phosphorylated H3.3 at Ser-31 (H3.3S31Ph), which results in H3K27 acetylation (H3K27Ac) at enhancers. In turn, H3K27Ac recruits bromodomain protein BRD4 for enhancer-promoter interaction and transcription activation. We observed that HIRA KO reduces H3.3 incorporation, diminishes H3.3S31Ph and H3K27Ac, modifies recruitment of BRD4. These results suggest that H3.3-enriched enhancer chromatin serves as a platform for H3K27Ac-mediated BRD4 recruitment, which interacts with and retains AR at enhancers, resulting in transcription reprogramming. In addition, HIRA KO deregulates glucocorticoid- (GR) driven transcription of genes co-regulated by AR and GR, suggesting a common H3.3/HIRA-dependent mechanism of nuclear receptors function. Expression of HIRA complex proteins is increased in PC compared with normal prostate tissue, especially in high-risk PC groups, and is associated with a negative prognosis. Collectively, our results demonstrate function of HIRA-dependent H3.3 pathway in regulation of nuclear receptors activity.
Collapse
Affiliation(s)
- Viacheslav M Morozov
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Alberto Riva
- Interdisciplinary Center for Biotechnology Research, University of Florida, Gainesville, FL, USA
| | - Sadia Sarwar
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Wan-Ju Kim
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Jianping Li
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville, FL, USA
| | - Lei Zhou
- Department of Molecular Genetics & Microbiology, University of Florida College of Medicine, Gainesville, FL, USA
- University of Florida Health Cancer Center, Gainesville, FL, USA
| | - Jonathan D Licht
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville, FL, USA
- University of Florida Health Cancer Center, Gainesville, FL, USA
| | - Yehia Daaka
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
- University of Florida Health Cancer Center, Gainesville, FL, USA
| | - Alexander M Ishov
- Department of Anatomy and Cell Biology, University of Florida College of Medicine, Gainesville, FL, USA
- University of Florida Health Cancer Center, Gainesville, FL, USA
| |
Collapse
|
2
|
Morozov VM, Riva A, Sarwar S, Kim W, Li J, Zhou L, Licht JD, Daaka Y, Ishov AM. HIRA-mediated loading of histone variant H3.3 controls androgen-induced transcription by regulation of AR/BRD4 complex assembly at enhancers. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.08.536256. [PMID: 37214820 PMCID: PMC10197601 DOI: 10.1101/2023.05.08.536256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Incorporation of histone variant H3.3 comprises active territories of chromatin. Exploring the function of H3.3 in prostate cancer (PC), we found that knockout (KO) of H3.3 chaperone HIRA suppresses PC growth in vitro and in xenograft settings, deregulates androgen-induced gene expression and alters androgen receptor (AR) binding within enhancers of target genes. H3.3 affects transcription in multiple ways, including activation of p300 by phosphorylated H3.3 at Ser-31 (H3.3S31Ph), which results in H3K27 acetylation (H3K27Ac) at enhancers. In turn, H3K27Ac recruits bromodomain protein BRD4 for enhancer-promoter interaction and transcription activation. We observed that HIRA KO reduces H3.3 incorporation, diminishes H3.3S31Ph and H3K27Ac, modifies recruitment of BRD4. These results suggest that H3.3-enriched enhancer chromatin serves as a platform for H3K27Ac-mediated BRD4 recruitment, which interacts with and retains AR at enhancers, resulting in transcription reprogramming. AR KO reduced levels of H3.3 at enhancers, indicating feedback mechanism. In addition, HIRA KO deregulates glucocorticoid-driven transcription, suggesting a common H3.3/HIRA-dependent mechanism of nuclear receptors function. Expression of HIRA complex proteins is increased in PC compared with normal prostate tissue, especially in high-risk PC groups, and is associated with a negative prognosis. Collectively, our results demonstrate function of HIRA-dependent H3.3 pathway in regulation of nuclear receptors activity. Key points *H3.3 at enhancers promotes acetylation of H3K27Ac and retention of AR/BRD4 complex for transcription regulation*Knockout of H3.3 chaperone HIRA suppresses PC cells growth and deregulates androgen-induced transcription*H3.3/HIRA pathway regulates both AR and GR, suggesting a common HIRA/H3.3 mechanism of nuclear receptors function.
Collapse
|
3
|
Tafessu A, O’Hara R, Martire S, Dube AL, Saha P, Gant VU, Banaszynski LA. H3.3 contributes to chromatin accessibility and transcription factor binding at promoter-proximal regulatory elements in embryonic stem cells. Genome Biol 2023; 24:25. [PMID: 36782260 PMCID: PMC9926682 DOI: 10.1186/s13059-023-02867-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 02/06/2023] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND The histone variant H3.3 is enriched at active regulatory elements such as promoters and enhancers in mammalian genomes. These regions are highly accessible, creating an environment that is permissive to transcription factor binding and the recruitment of transcriptional coactivators that establish a unique chromatin post-translational landscape. How H3.3 contributes to the establishment and function of chromatin states at these regions is poorly understood. RESULTS We perform genomic analyses of features associated with active promoter chromatin in mouse embryonic stem cells (ESCs) and find evidence of subtle yet widespread promoter dysregulation in the absence of H3.3. Loss of H3.3 results in reduced chromatin accessibility and transcription factor (TF) binding at promoters of expressed genes in ESCs. Likewise, enrichment of the transcriptional coactivator p300 and downstream histone H3 acetylation at lysine 27 (H3K27ac) is reduced at promoters in the absence of H3.3, along with reduced enrichment of the acetyl lysine reader BRD4. Despite the observed chromatin dysregulation, H3.3 KO ESCs maintain transcription from ESC-specific genes. However, upon undirected differentiation, H3.3 KO cells retain footprinting of ESC-specific TF motifs and fail to generate footprints of lineage-specific TF motifs, in line with their diminished capacity to differentiate. CONCLUSIONS H3.3 facilitates DNA accessibility, transcription factor binding, and histone post-translational modification at active promoters. While H3.3 is not required for maintaining transcription in ESCs, it does promote de novo transcription factor binding which may contribute to the dysregulation of cellular differentiation in the absence of H3.3.
Collapse
Affiliation(s)
- Amanuel Tafessu
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| | - Ryan O’Hara
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| | - Sara Martire
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| | - Altair L. Dube
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| | - Purbita Saha
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| | - Vincent U. Gant
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| | - Laura A. Banaszynski
- grid.267313.20000 0000 9482 7121Cecil H. and Ida Green Center for Reproductive Biology Sciences, Department of Obstetrics and Gynecology, Children’s Medical Center Research Institute, Harold C. Simmons Comprehensive Cancer Center, Hamon Center for Regenerative Science and Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390 USA
| |
Collapse
|
4
|
Potential Molecular Mechanism of Upregulated Aryl Hydrocarbon Receptor Nuclear Translocator 2 in Nasopharyngeal Carcinoma. COMPUTATIONAL AND MATHEMATICAL METHODS IN MEDICINE 2022; 2022:9137282. [PMID: 36203533 PMCID: PMC9532129 DOI: 10.1155/2022/9137282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 08/13/2022] [Indexed: 11/17/2022]
Abstract
Background. Currently, the benefits of nasopharyngeal carcinoma (NPC) therapy are limited, and it is necessary to further explore possible therapeutic targets. Aryl hydrocarbon receptor nuclear translocator 2 (ARNT2) has been extensively studied in other cancer species, but little has been explored in NPC. The aim of this study was to verify the expression level of ARNT2 and its underlying mechanism in NPC. Methods. Datasets containing ARNT2 mRNA expression levels were retrieved and collected from various databases to explore the expression status of ARNT2 in NPC. ARNT2-related coexpressed genes, differential expressed genes, and target genes were obtained for functional enrichment analysis. The potential target gene of ARNT2 and their regulatory relationship were studied through ChIP-seq data. CIBERSORTx was used to assess the immune infiltration of NPC, and the association with ARNT2 expression was calculated through correlation analysis. Results. ARNT2 was upregulated and possessed an excellent discriminatory capability in NPC samples. ARNT2 positively correlated target genes were clustered in pathways in cancer, while negatively correlated target genes were enriched in immune-related pathway. The ChIP-seq information of ARNT2 and histone showed that prostaglandin-endoperoxide synthase 2 (PTGS2) was a potential target gene of ARNT2. CIBERSORTx revealed the immunity status in NPC, and ARNT2 expression was correlated with infiltration of five immune cells. Conclusions. ARNT2 is overexpressed in NPC and may regulate PTGS2 to participate in the cancer process. ARNT2 serves as a key oncogenic target in NPC patients.
Collapse
|
5
|
Epigenetic Memories in Hematopoietic Stem and Progenitor Cells. Cells 2022; 11:cells11142187. [PMID: 35883630 PMCID: PMC9324604 DOI: 10.3390/cells11142187] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/06/2022] [Accepted: 07/11/2022] [Indexed: 11/16/2022] Open
Abstract
The recent development of next-generation sequencing (NGS) technologies has contributed to research into various biological processes. These novel NGS technologies have revealed the involvement of epigenetic memories in trained immunity, which are responses to transient stimulation and result in better responses to secondary challenges. Not only innate system cells, such as macrophages, monocytes, and natural killer cells, but also bone marrow hematopoietic stem cells (HSCs) have been found to gain memories upon transient stimulation, leading to the enhancement of responses to secondary challenges. Various stimuli, including microbial infection, can induce the epigenetic reprogramming of innate immune cells and HSCs, which can result in an augmented response to secondary stimulation. In this review, we introduce novel NGS technologies and their application to unraveling epigenetic memories that are key in trained immunity and summarize the recent findings in trained immunity. We also discuss our most recent finding regarding epigenetic memory in aged HSCs, which may be associated with the exposure of HSCs to aging-related stresses.
Collapse
|
6
|
Möller E, Praz V, Rajendran S, Dong R, Cauderay A, Xing YH, Lee L, Fusco C, Broye LC, Cironi L, Iyer S, Rengarajan S, Awad ME, Naigles B, Letovanec I, Ormas N, Finzi G, La Rosa S, Sessa F, Chebib I, Petur Nielsen G, Digklia A, Spentzos D, Cote GM, Choy E, Aryee M, Stamenkovic I, Boulay G, Rivera MN, Riggi N. EWSR1-ATF1 dependent 3D connectivity regulates oncogenic and differentiation programs in Clear Cell Sarcoma. Nat Commun 2022; 13:2267. [PMID: 35477713 PMCID: PMC9046276 DOI: 10.1038/s41467-022-29910-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 04/07/2022] [Indexed: 11/26/2022] Open
Abstract
Oncogenic fusion proteins generated by chromosomal translocations play major roles in cancer. Among them, fusions between EWSR1 and transcription factors generate oncogenes with powerful chromatin regulatory activities, capable of establishing complex gene expression programs in permissive precursor cells. Here we define the epigenetic and 3D connectivity landscape of Clear Cell Sarcoma, an aggressive cancer driven by the EWSR1-ATF1 fusion gene. We find that EWSR1-ATF1 displays a distinct DNA binding pattern that requires the EWSR1 domain and promotes ATF1 retargeting to new distal sites, leading to chromatin activation and the establishment of a 3D network that controls oncogenic and differentiation signatures observed in primary CCS tumors. Conversely, EWSR1-ATF1 depletion results in a marked reconfiguration of 3D connectivity, including the emergence of regulatory circuits that promote neural crest-related developmental programs. Taken together, our study elucidates the epigenetic mechanisms utilized by EWSR1-ATF1 to establish regulatory networks in CCS, and points to precursor cells in the neural crest lineage as candidate cells of origin for these tumors. The relationship between cellular histogenesis and molecular phenotypes for the EWSR1- ATF1 fusion in clear cell sarcoma (CCS) requires further characterization. Here, the authors investigate the EWSR1-ATF1 gene regulation networks in CCS cell lines, primary tumors, and mesenchymal stem cells.
Collapse
Affiliation(s)
- Emely Möller
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Viviane Praz
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Sanalkumar Rajendran
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Rui Dong
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Alexandra Cauderay
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Yu-Hang Xing
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Lukuo Lee
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Carlo Fusco
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Liliane C Broye
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Luisa Cironi
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Sowmya Iyer
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Shruthi Rengarajan
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Mary E Awad
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Beverly Naigles
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Igor Letovanec
- Department of Histopathology, Central Institute, Valais Hospital, Sion, Switzerland.,Institute of Pathology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Nicola Ormas
- Department of Pathology, ASST Sette Laghi, Varese, Italy
| | - Giovanna Finzi
- Department of Pathology, ASST Sette Laghi, Varese, Italy
| | - Stefano La Rosa
- Institute of Pathology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.,Pathology Unit, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Fausto Sessa
- Pathology Unit, Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Ivan Chebib
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - G Petur Nielsen
- Department of Pathology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Antonia Digklia
- Department of Oncology, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Dimitrios Spentzos
- Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - Gregory M Cote
- Department of Medicine, Division of Hematology and Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Edwin Choy
- Department of Medicine, Division of Hematology and Oncology, Massachusetts General Hospital, Boston, MA, USA
| | - Martin Aryee
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA.,Broad Institute, Cambridge, MA, USA
| | - Ivan Stamenkovic
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland
| | - Gaylor Boulay
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA
| | - Miguel N Rivera
- Department of Pathology and Cancer Center, Massachusetts General Hospital, Charlestown, MA, USA.,Broad Institute, Cambridge, MA, USA
| | - Nicolò Riggi
- Experimental Pathology Service, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland.
| |
Collapse
|
7
|
Feoktistov AV, Georgieva SG, Soshnikova NV. Role of the SWI/SNF Chromatin Remodeling Complex in Regulation of Inflammation Gene Expression. Mol Biol 2022. [DOI: 10.1134/s0026893322020054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
8
|
Abstract
The Human Genome Project marked a major milestone in the scientific community as it unravelled the ~3 billion bases that are central to crucial aspects of human life. Despite this achievement, it only scratched the surface of understanding how each nucleotide matters, both individually and as part of a larger unit. Beyond the coding genome, which comprises only ~2% of the whole genome, scientists have realized that large portions of the genome, not known to code for any protein, were crucial for regulating the coding genes. These large portions of the genome comprise the 'non-coding genome'. The history of gene regulation mediated by proteins that bind to the regulatory non-coding genome dates back many decades to the 1960s. However, the original definition of 'enhancers' was first used in the early 1980s. In this Review, we summarize benchmark studies that have mapped the role of cardiac enhancers in disease and development. We highlight instances in which enhancer-localized genetic variants explain the missing link to cardiac pathogenesis. Finally, we inspire readers to consider the next phase of exploring enhancer-based gene therapy for cardiovascular disease.
Collapse
|
9
|
Pillai A, Gungi A, Reddy PC, Galande S. Epigenetic Regulation in Hydra: Conserved and Divergent Roles. Front Cell Dev Biol 2021; 9:663208. [PMID: 34041242 PMCID: PMC8141815 DOI: 10.3389/fcell.2021.663208] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/13/2021] [Indexed: 12/12/2022] Open
Abstract
Transitions in gene regulatory processes responsible for the emergence of specialized cell types and spatiotemporal regulation of developmental signaling prior to the divergence of Cnidaria and Bilateria are poorly understood. As a sister group of Bilateria, the phylum Cnidaria can provide significant insights into these processes. Among the cnidarians, hydrae have been studied for >250 years to comprehend the mechanisms underlying their unique immortality and robust regenerative capacity. Studies on Hydra spp. and other pre-bilaterians alike have advanced our understanding of the evolutionary underpinnings governing eumetazoan tissue development, homeostasis, and regeneration. In addition to its regenerative potential, Hydra exhibits continuously active axial patterning due to its peculiar tissue dynamics. These distinctive physiological processes necessitate large scale gene expression changes that are governed by the multitude of epigenetic mechanisms operating in cells. This review highlights the contemporary knowledge of epigenetic regulation in Hydra with contemporary studies from other members of Cnidaria, as well as the interplay between regulatory mechanisms wherever demonstrated. The studies covered in the scope of this review reveal both ancestral and divergent roles played by conserved epigenetic mechanisms with emphasis on transcriptional regulation. Additionally, single-cell transcriptomics data was mined to predict the physiological relevance of putative gene regulatory components, which is in agreement with published findings and yielded insights into the possible functions of the gene regulatory mechanisms that are yet to be deciphered in Hydra, such as DNA methylation. Finally, we delineate potentially rewarding epigenetics research avenues that can further leverage the unique biology of Hydra.
Collapse
Affiliation(s)
| | | | - Puli Chandramouli Reddy
- Centre of Excellence in Epigenetics, Department of Biology, Indian Institute of Science Education and Research, Pune, India
| | - Sanjeev Galande
- Centre of Excellence in Epigenetics, Department of Biology, Indian Institute of Science Education and Research, Pune, India
| |
Collapse
|
10
|
Dúcka M, Kučeríková M, Trčka F, Červinka J, Biglieri E, Šmarda J, Borsig L, Beneš P, Knopfová L. c-Myb interferes with inflammatory IL1α-NF-κB pathway in breast cancer cells. Neoplasia 2021; 23:326-336. [PMID: 33621853 PMCID: PMC7905261 DOI: 10.1016/j.neo.2021.01.002] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 01/12/2021] [Accepted: 01/20/2021] [Indexed: 12/14/2022] Open
Abstract
The transcription factor c-Myb can be involved in the activation of many genes with protumorigenic function; however, its role in breast cancer (BC) development is still under discussion. c-Myb is considered as a tumor-promoting factor in the early phases of BC, on the other hand, its expression in BC patients relates to a good prognosis. Previously, we have shown that c-Myb controls the capacity of BC cells to form spontaneous lung metastasis. Reduced seeding of BC cells to the lungs is linked to high expression of c-Myb and a decline in expression of a specific set of inflammatory genes. Here, we unraveled a c-Myb-IL1α-NF-κB signaling axis that takes place in tumor cells. We report that an overexpression of c-Myb interfered with the activity of NF-κB in several BC cell lines. We identified IL1α to be essential for this interference since it was abrogated in the IL1α-deficient cells. Overexpression of IL1α, as well as addition of recombinant IL1α protein, activated NF-κB signaling and restored expression of the inflammatory signature genes suppressed by c-Myb. The endogenous levels of c-Myb negatively correlated with IL1α on both transcriptional and protein levels across BC cell lines. We concluded that inhibition of IL1α expression by c-Myb reduces NF-κB activity and disconnects the inflammatory circuit, a potentially targetable mechanism to mimic the antimetastatic effect of c-Myb with therapeutic perspective.
Collapse
Affiliation(s)
- Monika Dúcka
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic; International Clinical Research Center, Center for Biological and Cellular Engineering, St. Anne's University Hospital, Brno, Czech Republic
| | - Martina Kučeríková
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Filip Trčka
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic; International Clinical Research Center, Center for Biological and Cellular Engineering, St. Anne's University Hospital, Brno, Czech Republic
| | - Jakub Červinka
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic; International Clinical Research Center, Center for Biological and Cellular Engineering, St. Anne's University Hospital, Brno, Czech Republic
| | - Elisabetta Biglieri
- Institute of Physiology, University of Zurich and Comprehensive Cancer Center, Zurich, Switzerland
| | - Jan Šmarda
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic
| | - Lubor Borsig
- Institute of Physiology, University of Zurich and Comprehensive Cancer Center, Zurich, Switzerland
| | - Petr Beneš
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic; International Clinical Research Center, Center for Biological and Cellular Engineering, St. Anne's University Hospital, Brno, Czech Republic
| | - Lucia Knopfová
- Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic; International Clinical Research Center, Center for Biological and Cellular Engineering, St. Anne's University Hospital, Brno, Czech Republic.
| |
Collapse
|