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Dai D, Sari EM, Si J, Ashari H, Dagong MIA, Pauciullo A, Lenstra JA, Han J, Zhang Y. Genomic analysis reveals the association of KIT and MITF variants with the white spotting in swamp buffaloes. BMC Genomics 2024; 25:713. [PMID: 39048931 PMCID: PMC11267946 DOI: 10.1186/s12864-024-10634-2] [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: 02/24/2024] [Accepted: 07/18/2024] [Indexed: 07/27/2024] Open
Abstract
BACKGROUND Swamp-type buffaloes with varying degrees of white spotting are found exclusively in Tana Toraja, South Sulawesi, Indonesia, where spotted buffalo bulls are highly valued in accordance with the Torajan customs. The white spotting depigmentation is caused by the absence of melanocytes. However, the genetic variants that cause this phenotype have not been fully characterized. The objective of this study was to identify the genomic regions and variants responsible for this unique coat-color pattern. RESULTS Genome-wide association study (GWAS) and selection signature analysis identified MITF as a key gene based on the whole-genome sequencing data of 28 solid and 39 spotted buffaloes, while KIT was also found to be involved in the development of this phenotype by a candidate gene approach. Alternative candidate mutations included, in addition to the previously reported nonsense mutation c.649 C > T (p.Arg217*) and splice donor mutation c.1179 + 2T > A in MITF, a nonsense mutation c.2028T > A (p.Tyr676*) in KIT. All these three mutations were located in the genomic regions that were highly conserved exclusively in Indonesian swamp buffaloes and they accounted largely (95%) for the manifestation of white spotting. Last but not the least, ADAMTS20 and TWIST2 may also contribute to the diversification of this coat-color pattern. CONCLUSIONS The alternative mutations identified in this study affect, at least partially and independently, the development of melanocytes. The presence and persistence of such mutations may be explained by significant financial and social value of spotted buffaloes used in historical Rambu Solo ceremony in Tana Toraja, Indonesia. Several de novo spontaneous mutations have therefore been favored by traditional breeding for the spotted buffaloes.
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Affiliation(s)
- Dongmei Dai
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Eka Meutia Sari
- Department of Animal Science, Agriculture Faculty, Universitas Syiah Kuala (USK), Banda Aceh, 23111, Indonesia.
| | - Jingfang Si
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China
| | - Hidayat Ashari
- Research Center for Biosystematics and Evolution, National Research and Innovation Agency (BRIN), Cibinong, 16911, Indonesia
| | - Muhammad Ihsan Andi Dagong
- Animal Production Department, Faculty of Animal Science, Hasanuddin University, Makassar, 90245, Indonesia
| | - Alfredo Pauciullo
- Department of Agricultural, Forest and Food Sciences, University of Turin, Grugliasco (TO), 10095, Italy
| | - Johannes A Lenstra
- Faculty of Veterinary Medicine, Utrecht University, Yalelaan 104, 3584 CM, Utrecht, The Netherlands
| | - Jianlin Han
- Yazhouwan National Laboratory, Sanya, 572024, China
| | - Yi Zhang
- State Key Laboratory of Animal Biotech Breeding, National Engineering Laboratory for Animal Breeding, Key Laboratory of Animal Genetics, Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, College of Animal Science and Technology, China Agricultural University, Beijing, 100193, China.
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2
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Wolfram L, Gimpel C, Schwämmle M, Clark SJ, Böhringer D, Schlunck G. The impact of substrate stiffness on morphological, transcriptional and functional aspects in RPE. Sci Rep 2024; 14:7488. [PMID: 38553490 DOI: 10.1038/s41598-024-56661-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 03/08/2024] [Indexed: 04/02/2024] Open
Abstract
Alterations in the structure and composition of Bruch's membrane (BrM) and loss of retinal pigment epithelial (RPE) cells are associated with various ocular diseases, notably age-related macular degeneration (AMD) as well as several inherited retinal diseases (IRDs). We explored the influence of stiffness as a major BrM characteristic on the RPE transcriptome and morphology. ARPE-19 cells were plated on soft ( E = 30 kPa ) or stiff ( E = 80 kPa ) polyacrylamide gels (PA gels) or standard tissue culture plastic (TCP). Next-generation sequencing (NGS) data on differentially expressed small RNAs (sRNAs) and messenger RNAs (mRNAs) were validated by qPCR, immunofluorescence or western blotting. The microRNA (miRNA) fraction of sRNAs grew with substrate stiffness and distinct miRNAs such as miR-204 or miR-222 were differentially expressed. mRNA targets of differentially expressed miRNAs were stably expressed, suggesting a homeostatic effect of miRNAs. mRNA transcription patterns were substrate stiffness-dependent, including components of Wnt/beta-catenin signaling, Microphthalmia-Associated Transcription Factor (MITF) and Dicer. These findings highlight the relevance of mechanical properties of the extracellular matrix (ECM) in cell culture experiments, especially those focusing on ECM-related diseases, such as AMD.
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Affiliation(s)
- Lasse Wolfram
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
- Department for Ophthalmology, Institute for Ophthalmic Research, Eberhard Karls University of Tübingen, Tübingen, Germany.
- Department for Ophthalmology, University Eye Clinic, Eberhard Karls University of Tübingen, Tübingen, Germany.
| | - Clara Gimpel
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Neurology, Schlosspark-Klinik Charlottenburg, Berlin, Germany
| | - Melanie Schwämmle
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Faculty of Biology, University of Freiburg, Freiburg, Germany
| | - Simon J Clark
- Department for Ophthalmology, Institute for Ophthalmic Research, Eberhard Karls University of Tübingen, Tübingen, Germany
- Department for Ophthalmology, University Eye Clinic, Eberhard Karls University of Tübingen, Tübingen, Germany
- Lydia Becker Institute of Immunology and Inflammation, University of Manchester, Manchester, UK
| | - Daniel Böhringer
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Günther Schlunck
- Eye Center, Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
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Bertrand JU, Petit V, Aktary Z, de la Grange P, Elkoshi N, Sohier P, Delmas V, Levy C, Larue L. Loss of Dicer in Newborn Melanocytes Leads to Premature Hair Graying and Changes in Integrin Expression. J Invest Dermatol 2024; 144:601-611. [PMID: 37739336 DOI: 10.1016/j.jid.2023.08.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/29/2023] [Accepted: 08/30/2023] [Indexed: 09/24/2023]
Abstract
Premature hair graying occurs owing to the depletion of melanocyte stem cells in the hair follicle, which can be accelerated by stress caused by genetic or environmental factors. However, the connection between stress and melanocyte stem cell loss is not fully understood. MicroRNAs are molecules that control gene expression by regulating mRNA stability and translation and are produced by the enzyme Dicer, which is repressed under stress. In this study, using 2 mouse genetic models and human and mouse cell lines, we found that the inactivation of Dicer in melanocytes leads to misplacement of these cells within the hair follicle, resulting in a lack of melanin transfer to keratinocytes in the growing hair and the exhaustion of the melanocyte stem cell pool. We also show that miR-92b, which regulates ItgaV mRNA and protein levels, plays a role in altering melanocyte migration. Overall, our findings suggest that the Dicer-miR92b-ItgaV pathway serves as a major signaling pathway linking stress to premature hair greying.
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Affiliation(s)
- Juliette U Bertrand
- INSERM U1021, Normal and Pathological Development of Melanocytes, Institut Curie, PSL Research University, Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France
| | - Valérie Petit
- INSERM U1021, Normal and Pathological Development of Melanocytes, Institut Curie, PSL Research University, Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France
| | - Zackie Aktary
- INSERM U1021, Normal and Pathological Development of Melanocytes, Institut Curie, PSL Research University, Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France
| | | | - Nadav Elkoshi
- Department of Human Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Pierre Sohier
- INSERM U1021, Normal and Pathological Development of Melanocytes, Institut Curie, PSL Research University, Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France
| | - Véronique Delmas
- INSERM U1021, Normal and Pathological Development of Melanocytes, Institut Curie, PSL Research University, Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France
| | - Carmit Levy
- Department of Human Genetics and Biochemistry, Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel
| | - Lionel Larue
- INSERM U1021, Normal and Pathological Development of Melanocytes, Institut Curie, PSL Research University, Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR 3347, Univ Paris-Sud, Univ Paris-Saclay, Orsay, France.
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4
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Sivapornnukul P, Khamwut A, Chanchaem P, Chusongsang P, Chusongsang Y, Poodeepiyasawat P, Limpanont Y, Reamtong O, Payungporn S. Comprehensive analysis of miRNA profiling in Schistosoma mekongi across life cycle stages. Sci Rep 2024; 14:2347. [PMID: 38281987 PMCID: PMC10822868 DOI: 10.1038/s41598-024-52835-5] [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: 11/01/2023] [Accepted: 01/24/2024] [Indexed: 01/30/2024] Open
Abstract
Schistosoma mekongi, a significant schistosome parasite, has various life stages, including egg, cercaria, female, and male, that play crucial roles in the complex life cycle. This study aimed to explore the microRNA (miRNA) profiles across these developmental stages to understand their potential functions and evolutionary significance, which have not been studied. Pre-processed sequencing reads of small RNA (sRNA) were obtained, and annotations were performed against the S. japonicum reference miRNA database. Results indicated marked variations in miRNA profiles across different life stages, with notable similarities observed between female and male S. mekongi. Principal Coordinate Analysis (PCoA) and unsupervised clustering revealed distinct miRNA signatures for each stage. Gene ontology (GO) analysis unveiled the potential roles of these miRNAs in various biological processes. The differential expression of specific miRNAs was prominent across stages, suggesting their involvement in crucial developmental processes. Furthermore, orthologous miRNA analysis against various worm species revealed distinct presence-absence patterns, providing insights into the evolutionary relationships of these miRNAs. In conclusion, this comprehensive investigation into the miRNA profiles of S. mekongi offers valuable insights into the functional and evolutionary aspects of miRNAs in schistosome biology.
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Affiliation(s)
- Pavaret Sivapornnukul
- Center of Excellence in Systems Microbiology (CESM), Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ariya Khamwut
- Center of Excellence in Systems Microbiology (CESM), Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Prangwalai Chanchaem
- Center of Excellence in Systems Microbiology (CESM), Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Phiraphol Chusongsang
- Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Yupa Chusongsang
- Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Paporn Poodeepiyasawat
- Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Yanin Limpanont
- Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand
| | - Onrapak Reamtong
- Department of Molecular Tropical Medicine and Genetics, Faculty of Tropical Medicine, Mahidol University, Bangkok, 10400, Thailand.
| | - Sunchai Payungporn
- Center of Excellence in Systems Microbiology (CESM), Department of Biochemistry, Faculty of Medicine, Chulalongkorn University, Bangkok, 10330, Thailand.
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5
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Liu X, Lu R, Yang Q, He J, Huang C, Cao Y, Zhou Z, Huang J, Li L, Chen R, Wang Y, Huang J, Xie R, Zhao X, Yu J. USP7 reduces the level of nuclear DICER, impairing DNA damage response and promoting cancer progression. Mol Oncol 2024; 18:170-189. [PMID: 37867415 PMCID: PMC10766207 DOI: 10.1002/1878-0261.13543] [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: 06/01/2023] [Revised: 09/30/2023] [Accepted: 10/12/2023] [Indexed: 10/24/2023] Open
Abstract
Endoribonuclease DICER is an RNase III enzyme that mainly processes microRNAs in the cytoplasm but also participates in nuclear functions such as chromatin remodelling, epigenetic modification and DNA damage repair. The expression of nuclear DICER is low in most human cancers, suggesting a tight regulation mechanism that is not well understood. Here, we found that ubiquitin carboxyl-terminal hydrolase 7 (USP7), a deubiquitinase, bounded to DICER and reduced its nuclear protein level by promoting its ubiquitination and degradation through MDM2, a newly identified E3 ubiquitin-protein ligase for DICER. This USP7-MDM2-DICER axis impaired histone γ-H2AX signalling and the recruitment of DNA damage response (DDR) factors, possibly by influencing the processing of small DDR noncoding RNAs. We also showed that this negative regulation of DICER by USP7 via MDM2 was relevant to human tumours using cellular and clinical data. Our findings revealed a new way to understand the role of DICER in malignant tumour development and may offer new insights into the diagnosis, treatment and prognosis of cancers.
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Affiliation(s)
- Xiaojia Liu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Runhui Lu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Qianqian Yang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jianfeng He
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Caihu Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Yingting Cao
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Zihan Zhou
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jiayi Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Lian Li
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Ran Chen
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Yanli Wang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jian Huang
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Ruiyu Xie
- Department of Biomedical Sciences, Faculty of Health SciencesUniversity of MacauChina
| | - Xian Zhao
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
| | - Jianxiu Yu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Key Laboratory of Tumor Microenvironment and InflammationShanghai Jiao Tong University School of MedicineChina
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6
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Elkoshi N, Parikh S, Malcov-Brog H, Parikh R, Manich P, Netti F, Maliah A, Elkoshi H, Haj M, Rippin I, Frand J, Perluk T, Haiat-Factor R, Golan T, Regev-Rudzki N, Kiper E, Brenner R, Gonen P, Dror I, Levi H, Hameiri O, Cohen-Gulkar M, Eldar-Finkelman H, Ast G, Nizri E, Ziv Y, Elkon R, Khaled M, Ebenstein Y, Shiloh Y, Levy C. Ataxia Telangiectasia Mutated Signaling Delays Skin Pigmentation upon UV Exposure by Mediating MITF Function toward DNA Repair Mode. J Invest Dermatol 2023; 143:2494-2506.e4. [PMID: 37236596 DOI: 10.1016/j.jid.2023.03.1686] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 02/24/2023] [Accepted: 03/02/2023] [Indexed: 05/28/2023]
Abstract
Skin pigmentation is paused after sun exposure; however, the mechanism behind this pausing is unknown. In this study, we found that the UVB-induced DNA repair system, led by the ataxia telangiectasia mutated (ATM) protein kinase, represses MITF transcriptional activity of pigmentation genes while placing MITF in DNA repair mode, thus directly inhibiting pigment production. Phosphoproteomics analysis revealed ATM to be the most significantly enriched pathway among all UVB-induced DNA repair systems. ATM inhibition in mouse or human skin, either genetically or chemically, induces pigmentation. Upon UVB exposure, MITF transcriptional activation is blocked owing to ATM-dependent phosphorylation of MITF on S414, which modifies MITF activity and interactome toward DNA repair, including binding to TRIM28 and RBBP4. Accordingly, MITF genome occupancy is enriched in sites of high DNA damage that are likely repaired. This suggests that ATM harnesses the pigmentation key activator for the necessary rapid, efficient DNA repair, thus optimizing the chances of the cell surviving. Data are available from ProteomeXchange with the identifier PXD041121.
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Affiliation(s)
- Nadav Elkoshi
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shivang Parikh
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hagar Malcov-Brog
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Roma Parikh
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Paulee Manich
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Francesca Netti
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Avishai Maliah
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hana Elkoshi
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Majd Haj
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ido Rippin
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jacob Frand
- Department of Plastic and Reconstructive Surgery, Edith Wolfson Medical Center, Holon, Israel
| | - Tomer Perluk
- Department of Plastic and Reconstructive Surgery, Edith Wolfson Medical Center, Holon, Israel
| | - Rivi Haiat-Factor
- Department of Plastic and Reconstructive Surgery, Edith Wolfson Medical Center, Holon, Israel
| | - Tamar Golan
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Neta Regev-Rudzki
- Department of Biomolecular Sciences, Faculty of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Edo Kiper
- Department of Biomolecular Sciences, Faculty of Biochemistry, Weizmann Institute of Science, Rehovot, Israel
| | - Ronen Brenner
- Institute of Oncology, Edith Wolfson Medical Center, Holon, Israel
| | - Pinchas Gonen
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Iris Dror
- Department of Biological Chemistry, University of California Loss Angeles School of Medicine, Los Angeles, California, USA
| | - Hagai Levi
- The Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv, Israel
| | - Ofir Hameiri
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mazal Cohen-Gulkar
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Hagit Eldar-Finkelman
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Gil Ast
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Eran Nizri
- Department of Dermatology, Tel Aviv Sourasky Medical Center Ichilov, Tel Aviv, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Yael Ziv
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Rani Elkon
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Mehdi Khaled
- INSERM 1186, Gustave Roussy, Université Paris-Saclay, Villejuif, France
| | - Yuval Ebenstein
- School of Chemistry, Center for Nanoscience and Nanotechnology, Center for Light-Matter Interaction, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Yosef Shiloh
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Carmit Levy
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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7
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Feng Z, Qin Y, Jiang G. Reversing Gray Hair: Inspiring the Development of New Therapies Through Research on Hair Pigmentation and Repigmentation Progress. Int J Biol Sci 2023; 19:4588-4607. [PMID: 37781032 PMCID: PMC10535703 DOI: 10.7150/ijbs.86911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Accepted: 08/19/2023] [Indexed: 10/03/2023] Open
Abstract
Hair graying is a common and visible sign of aging resulting from decreased or absence of melanogenesis. Although it has been established that gray hair greatly impacts people's mental health and social life, there is no effective countermeasure other than hair dyes. It has long been thought that reversal of gray hair on a large scale is rare. However, a recent study reported that individual gray hair darkening is a common phenomenon, suggesting the possibility of large-scale reversal of gray hair. In this article, we summarize the regulation mechanism of melanogenesis and review existing cases of hair repigmentation caused by several factors, including monoclonal antibodies drugs, tyrosine kinase inhibitors (TKIs), immunomodulators, other drugs, micro-injury, and tumors, and speculate on the mechanisms behind them. This review offers some insights for further research into the modulation of melanogenesis and presents a novel perspective on the development of clinical therapies, with emphasis on topical treatments.
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Affiliation(s)
- Zhaorui Feng
- Department of Dermatology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
- Department of Dermatology, Xuzhou Medical University, Xuzhou, China
| | - Yi Qin
- Department of Dermatology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
- Department of Dermatology, Xuzhou Medical University, Xuzhou, China
| | - Guan Jiang
- Department of Dermatology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
- Department of Dermatology, Xuzhou Medical University, Xuzhou, China
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8
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Gelmi MC, Verdijk RM, Houtzagers LE, van der Velden PA, Kroes WGM, Luyten GPM, Vu THK, Jager MJ. Microphthalmia-Associated Transcription Factor: A Differentiation Marker in Uveal Melanoma. Int J Mol Sci 2023; 24:ijms24108861. [PMID: 37240204 DOI: 10.3390/ijms24108861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/09/2023] [Accepted: 05/11/2023] [Indexed: 05/28/2023] Open
Abstract
Microphthalmia-associated transcription factor (MITF) is an important regulator of melanogenesis and melanocyte development. In cutaneous melanoma, MITF loss has been linked to an increased expression of stem cell markers, a shift in epithelial-to-mesenchymal transition (EMT)-related factors, and increased inflammation. We explored the role of MITF in Uveal Melanoma (UM) using a cohort of 64 patients enucleated at the Leiden University Medical Center. We analysed the relation between MITF expression and clinical, histopathological and genetic features of UM, as well as survival. We performed differential gene expression and gene set enrichment analysis using mRNA microarray data, comparing MITF-low with MITF-high UM. MITF expression was lower in heavily pigmented UM than in lightly pigmented UM (p = 0.003), which we confirmed by immunohistochemistry. Furthermore, MITF was significantly lower in UM with monosomy 3/BAP1 loss than in those with disomy 3/no BAP1 loss (p < 0.001) and with 8q gain/amplification 8q (p = 0.02). Spearman correlation analysis showed that a low MITF expression was associated with an increase in inflammatory markers, hallmark pathways involved in inflammation, and epithelial-mesenchymal transition. Similar to the situation in cutaneous melanoma, we propose that MITF loss in UM is related to de-differentiation to a less favourable EMT profile and inflammation.
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Affiliation(s)
- Maria Chiara Gelmi
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Robert M Verdijk
- Department of Pathology, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
- Department of Pathology, Section Ophthalmic Pathology, Erasmus MC University Medical Center, 3000 CA Rotterdam, The Netherlands
| | - Laurien E Houtzagers
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Pieter A van der Velden
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Wilma G M Kroes
- Department of Clinical Genetics, Leiden University Medical Center, 2300 RC Leiden, The Netherlands
| | - Gregorius P M Luyten
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - T H Khanh Vu
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
| | - Martine J Jager
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands
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9
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Rajasekaran S, Khan E, Ching SR, Khan M, Siddiqui J, Gradia DF, Lin C, Bouley SJ, Mercadante D, Manning AL, Gerber AP, Walker J, Miles W. PUMILIO competes with AUF1 to control DICER1 RNA levels and miRNA processing. Nucleic Acids Res 2022; 50:7048-7066. [PMID: 35736218 PMCID: PMC9262620 DOI: 10.1093/nar/gkac499] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 05/27/2022] [Indexed: 12/24/2022] Open
Abstract
DICER1 syndrome is a cancer pre-disposition disorder caused by mutations that disrupt the function of DICER1 in miRNA processing. Studying the molecular, cellular and oncogenic effects of these mutations can reveal novel mechanisms that control cell homeostasis and tumor biology. Here, we conduct the first analysis of pathogenic DICER1 syndrome allele from the DICER1 3'UTR. We find that the DICER1 syndrome allele, rs1252940486, abolishes interaction with the PUMILIO RNA binding protein with the DICER1 3'UTR, resulting in the degradation of the DICER1 mRNA by AUF1. This single mutational event leads to diminished DICER1 mRNA and protein levels, and widespread reprogramming of miRNA networks. The in-depth characterization of the rs1252940486 DICER1 allele, reveals important post-transcriptional regulatory events that control DICER1 levels.
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Affiliation(s)
- Swetha Rajasekaran
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Eshan Khan
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Samuel R Ching
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Misbah Khan
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Jalal K Siddiqui
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Daniela F Gradia
- Department of Microbial Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
- Department of Genetics, Federal University of Parana, Curitiba, Brazil
| | - Chenyu Lin
- Department of Cancer Biology and Genetics, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
- The Ohio State University Comprehensive Cancer Center, The Ohio State University, 460 West 12th Avenue, Columbus, OH 43210, USA
| | - Stephanie J Bouley
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Dayna L Mercadante
- Bioinformatics and Computational Biology Program, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - Amity L Manning
- Bioinformatics and Computational Biology Program, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
- Department of Biology and Biotechnology, Worcester Polytechnic Institute, 100 Institute Road, Worcester, MA 01609, USA
| | - André P Gerber
- Department of Microbial Sciences, School of Biosciences and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 7XH, UK
| | - James A Walker
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA 02114, USA
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, USA
- Cancer Program, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Wayne O Miles
- To whom correspondence should be addressed. Tel: +1 614 366 2869;
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10
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Gelmi MC, Houtzagers LE, Strub T, Krossa I, Jager MJ. MITF in Normal Melanocytes, Cutaneous and Uveal Melanoma: A Delicate Balance. Int J Mol Sci 2022; 23:6001. [PMID: 35682684 PMCID: PMC9181002 DOI: 10.3390/ijms23116001] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 02/04/2023] Open
Abstract
Microphthalmia-associated transcription factor (MITF) is an important regulator of melanogenesis and melanocyte development. Although it has been studied extensively in cutaneous melanoma, the role of MITF in uveal melanoma (UM) has not been explored in much detail. We review the literature about the role of MITF in normal melanocytes, in cutaneous melanoma, and in UM. In normal melanocytes, MITF regulates melanocyte development, melanin synthesis, and melanocyte survival. The expression profile and the behaviour of MITF-expressing cells suggest that MITF promotes local proliferation and inhibits invasion, inflammation, and epithelial-to-mesenchymal (EMT) transition. Loss of MITF expression leads to increased invasion and inflammation and is more prevalent in malignant cells. Cutaneous melanoma cells switch between MITF-high and MITF-low states in different phases of tumour development. In UM, MITF loss is associated with loss of BAP1 protein expression, which is a marker of poor prognosis. These data indicate a dual role for MITF in benign and malignant melanocytic cells.
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Affiliation(s)
- Maria Chiara Gelmi
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands; (M.C.G.); (L.E.H.)
| | - Laurien E. Houtzagers
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands; (M.C.G.); (L.E.H.)
| | - Thomas Strub
- Université Côte d’Azur, 06103 Nice, France; (T.S.); (I.K.)
- Inserm, Biology and Pathologies of Melanocytes, Team1, Equipe Labellisée Ligue 2020, Centre Méditerranéen de Médecine Moléculaire, 06204 Nice, France
| | - Imène Krossa
- Université Côte d’Azur, 06103 Nice, France; (T.S.); (I.K.)
- Inserm, Biology and Pathologies of Melanocytes, Team1, Equipe Labellisée Ligue 2020, Centre Méditerranéen de Médecine Moléculaire, 06204 Nice, France
| | - Martine J. Jager
- Department of Ophthalmology, Leiden University Medical Center, P.O. Box 9600, 2300 RC Leiden, The Netherlands; (M.C.G.); (L.E.H.)
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11
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Tseng CF, Chen LT, Wang HD, Liu YH, Shiah SG. Transcriptional suppression of Dicer by HOXB-AS3/EZH2 complex dictates Sorafenib resistance and cancer stemness. Cancer Sci 2022; 113:1601-1612. [PMID: 35253323 PMCID: PMC9128169 DOI: 10.1111/cas.15319] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 02/15/2022] [Accepted: 02/22/2022] [Indexed: 11/28/2022] Open
Abstract
Sorafenib is multi-kinase inhibitor for the standard treatment of advanced liver cancer patients. However, acquired resistance to sorafenib is responsible for a poor prognosis. Therefore, uncovering the molecular mechanisms underlying sorafenib sensitization can provide biomarkers for sorafenib treatment and improve sorafenib activity in a precise medication. Here, we report that epigenetic suppression of Dicer by HOXB-AS3/EZH2 complex is responsible for sorafenib resistance. We observed that Dicer expression is inversely correlated with EZH2 levels, HOXB-AS3 expression, sorafenib resistance and cancer stem cell properties in liver cancer patients. Furthermore, ectopic expression of Dicer induced liver cancer cells re-sensitization to sorafenib. Mechanistically, we found HOXB-AS3 physically interacts with EZH2 and recruits EZH2 to the Dicer promoter, resulting in epigenetic suppression of Dicer expression. These findings reveal that HOXB-AS3/EZH2 complex-mediated Dicer suppression plays an important role in sorafenib resistance and cancer stemness and provide potential therapeutic strategies for diagnosing and treating liver cancer patients.
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Affiliation(s)
- Chi-Feng Tseng
- Graduate Program of Biotechnology in Medicine, NTHU & NHRI.,Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan.,National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli Country, Taiwan
| | - Li-Tzong Chen
- National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli Country, Taiwan.,Department of Oncology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Internal Medicine, Kaohsiung Medical University Hospital and Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Horng-Dar Wang
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan
| | - Yi-Hong Liu
- Institute of Biotechnology, National Tsing Hua University, Hsinchu, Taiwan.,National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli Country, Taiwan
| | - Shine-Gwo Shiah
- National Institute of Cancer Research, National Health Research Institutes, Zhunan, Miaoli Country, Taiwan.,Program in Environmental and Occupational Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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12
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Vergani-Junior CA, Tonon-da-Silva G, Inan MD, Mori MA. DICER: structure, function, and regulation. Biophys Rev 2021; 13:1081-1090. [DOI: 10.1007/s12551-021-00902-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/31/2021] [Indexed: 02/06/2023] Open
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13
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Zhou S, Zeng H, Huang J, Lei L, Tong X, Li S, Zhou Y, Guo H, Khan M, Luo L, Xiao R, Chen J, Zeng Q. Epigenetic regulation of melanogenesis. Ageing Res Rev 2021; 69:101349. [PMID: 33984527 DOI: 10.1016/j.arr.2021.101349] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Revised: 04/19/2021] [Accepted: 04/26/2021] [Indexed: 02/07/2023]
Abstract
Melanogenesis is a complex process in which melanin is synthesized in melanocytes and transported to keratinocytes, which involves multiple genes and signaling pathways. Epigenetics refers to the potential genetic changes that affect gene expression without involving changes in the original sequence of DNA nucleotides. DNA methylation regulates the expression of key genes such as tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1), dopachrome tautomerase (DCT) and microphthalmia-associated transcription factor (MITF), as well as paracrine factors such as stem cell factor (SCF) and endothelin-1 (ET-1) in melanogenesis. Potential DNA methylation sites are present in the genes of melanogenesis-related signaling pathways such as "Wnt", "PI3K/Akt/CREB" and "MAPK". H3K27 acetylation is abundant in melanogenesis-related genes. Both the upstream activation and downstream regulation of MITF depend on histone acetyltransferase CBP/p300, and pH-induced H3K27 acetylation may be the amplifying mechanism of MITF's effect. HDAC1 and HDAC10 catalyze histone deacetylation of melanogenesis-related gene promoters. Chromatin remodelers SWI/SNF complex and ISWI complex use the energy of ATP hydrolysis to rearrange nucleosomes, while their active subunits BRG1, BRM and BPTF, act as activators and cofactors of MITF. MicroRNAs (miRNAs) can directly target a large number of melanogenesis-related genes, while long noncoding RNAs (lncRNAs) and circular RNAs (circRNAs) regulate melanogenesis in a variety of ways. Interactions exist among the epigenetic mechanisms of melanogenesis. For example, the methyl CpG binding domain protein 2 (MeCP2) links DNA methylation, histone deacetylation, and histone methylation. Epigenetic-based therapy provides novel opportunities for treating dermatoses that are caused by pigmentation disturbances. This review summarizes the epigenetic regulation mechanisms of melanogenesis, and examines the pathogenesis and treatment of epigenetics in pigmentation disorders.
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14
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Sheinboim D, Parikh S, Parikh R, Menuchin A, Shapira G, Kapitansky O, Elkoshi N, Ruppo S, Shaham L, Golan T, Elgavish S, Nevo Y, Bell RE, Malcov H, Shomron N, Taub JW, Izraeli S, Levy C. Slow transcription of the 99a/let-7c/125b-2 cluster results in differential miRNA expression and promotes melanoma phenotypic plasticity. J Invest Dermatol 2021; 141:2944-2956.e6. [PMID: 34186058 DOI: 10.1016/j.jid.2021.03.036] [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: 11/09/2020] [Revised: 03/21/2021] [Accepted: 03/31/2021] [Indexed: 10/21/2022]
Abstract
Almost half of human miRNAs are encoded in clusters. Although transcribed as a single unit, the levels of individual mature miRNAs often differ. The mechanisms underlying differential biogenesis of clustered miRNAs and the resulting physiological implications are mostly unknown. Here, we report that the melanoma master transcription regulator MITF regulates the differential expression of the 99a/let-7c/125b-2 cluster by altering the distribution of RNA polymerase II (Pol-II) along the cluster. We discovered that MITF interacts with TRIM28, a known inhibitor of Pol-II transcription elongation, at the let-7c region resulting in Pol-II pausing and causing its elevated expression, whereas low levels of Pol-II occupation over miR-99a and miR-125b-2 regions decreases their biogenesis. Furthermore, we showed that this differential expression affects the phenotypic state of melanoma cells. RNA-seq analysis of proliferative melanoma cells that express miR-99a and miR-125b mimics revealed a transcriptomic shift toward an invasive phenotype. Conversely, expression of a let-7c mimic in invasive melanoma cells induced a shift to a more proliferative state. We confirmed direct target genes of these miRNAs: FGFR3, BAP1, Bcl2, TGFBR1, and CDKN1A. Our study demonstrates a MITF-governed biogenesis mechanism that results in differential expression of clustered 99a/let-7c/125b-2 miRNAs that control melanoma progression.
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Affiliation(s)
- Danna Sheinboim
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Shivang Parikh
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Roma Parikh
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Amitai Menuchin
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Guy Shapira
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Oxana Kapitansky
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Nadav Elkoshi
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Shmuel Ruppo
- Info-CORE, Bioinformatics Unit of the I-CORE, Hebrew University of Jerusalem and Hadassah Medical Center, Jerusalem 9112102, Israel
| | - Lital Shaham
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel; Division of Pediatric Hematology-Oncology Department, Schneider Children's Medical Center, Petah Tikva 49202, Israel
| | - Tamar Golan
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Sharona Elgavish
- Info-CORE, Bioinformatics Unit of the I-CORE, Hebrew University of Jerusalem and Hadassah Medical Center, Jerusalem 9112102, Israel
| | - Yuval Nevo
- Info-CORE, Bioinformatics Unit of the I-CORE, Hebrew University of Jerusalem and Hadassah Medical Center, Jerusalem 9112102, Israel
| | - Rachel E Bell
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Hagar Malcov
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Noam Shomron
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel; Edmond J. Safra Center of Bioinformatics, Tel Aviv University, Tel Aviv 69978, Israel
| | - Jeffrey W Taub
- Wayne State University School of Medicine, Detroit, MI 48201, USA; Division of Pediatric Hematology and Oncology, Children's Hospital of Michigan, Detroit, MI 48201, USA
| | - Shai Izraeli
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel; Info-CORE, Bioinformatics Unit of the I-CORE, Hebrew University of Jerusalem and Hadassah Medical Center, Jerusalem 9112102, Israel
| | - Carmit Levy
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
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15
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Su YH, Hsu TW, Chen HA, Su CM, Huang MT, Chuang TH, Leo Su J, Hsieh CL, Chiu CF. ERK-mediated transcriptional activation of Dicer is involved in gemcitabine resistance of pancreatic cancer. J Cell Physiol 2021; 236:4420-4434. [PMID: 33184874 DOI: 10.1002/jcp.30159] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 10/29/2020] [Accepted: 11/02/2020] [Indexed: 12/12/2022]
Abstract
Gemcitabine has been a commonly used therapeutic agent for treatment of pancreatic cancer. In the clinic, a growing resistance to gemcitabine has been observed in patients with pancreatic cancer, and investigation of the underlying mechanism of gemcitabine resistance is urgently required. The microRNA (miRNA)-producing enzyme, Dicer, is crucial for the maturation of miRNAs, and is involved in clinical aggressiveness, poor prognosis, and survival outcomes in various cancers, however, the role of Dicer in acquired gemcitabine resistance of pancreatic cancer is still not clear. Here, we found that Dicer expression was significantly increased in gemcitabine-resistant PANC-1 (PANC-1/GEM) cells compared with parental PANC-1 cells and observed a high level of Dicer correlated with increased risk of pancreatic cancer. Suppression of Dicer obviously decreased gemcitabine resistance in PANC-1/GEM cells; consistently, overexpression of Dicer in PANC-1 cells increased gemcitabine resistance. Moreover, we identified that transcriptional factor Sp1 targeted the promoter region of Dicer and found ERK/Sp1 signaling regulated Dicer expression in PANC-1/GEM cells, as well as positively correlated with pancreatic cancer progression and suggest that targeting the ERK/Sp1/Dicer pathway has potential therapeutic value for pancreatic cancer with acquired resistance to gemcitabine.
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MESH Headings
- Animals
- Antimetabolites, Antineoplastic/pharmacology
- Carcinoma, Pancreatic Ductal/drug therapy
- Carcinoma, Pancreatic Ductal/enzymology
- Carcinoma, Pancreatic Ductal/genetics
- Carcinoma, Pancreatic Ductal/pathology
- Cell Line, Tumor
- DEAD-box RNA Helicases/genetics
- DEAD-box RNA Helicases/metabolism
- Deoxycytidine/analogs & derivatives
- Deoxycytidine/pharmacology
- Drug Resistance, Neoplasm/genetics
- Extracellular Signal-Regulated MAP Kinases/metabolism
- Gene Expression Regulation, Neoplastic
- Humans
- Male
- Mice, Inbred NOD
- Mice, SCID
- Pancreatic Neoplasms/drug therapy
- Pancreatic Neoplasms/enzymology
- Pancreatic Neoplasms/genetics
- Pancreatic Neoplasms/pathology
- Ribonuclease III/genetics
- Ribonuclease III/metabolism
- Signal Transduction
- Sp1 Transcription Factor/genetics
- Sp1 Transcription Factor/metabolism
- Transcriptional Activation
- Xenograft Model Antitumor Assays
- Gemcitabine
- Mice
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Affiliation(s)
- Yen-Hao Su
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, Division of General Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of General Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Tung-Wei Hsu
- Department of Surgery, Division of General Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Graduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Hsin-An Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, Division of General Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of General Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chih-Ming Su
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, Division of General Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of General Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ming-Te Huang
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- Department of Surgery, Division of General Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
- Department of General Surgery, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
| | - Ta-Hsien Chuang
- School of Pharmacy, China Medical University, Taichung, Taiwan
| | - J Leo Su
- Department of Surgery, Division of General Surgery, Shuang Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Chia-Ling Hsieh
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
- The Ph.D. Program for Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan
| | - Ching-Feng Chiu
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei, Taiwan
- Nutrition Research Center, Taipei Medical University Hospital, Taipei, Taiwan
- Graduate Institute of Metabolism and Obesity Sciences, College of Nutrition, Taipei Medical University, Taipei, Taiwan
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16
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MicroRNA-Independent Modulation of DICER1 Expression by hAgo2. Mol Cell Biol 2020; 40:MCB.00221-20. [PMID: 32778571 DOI: 10.1128/mcb.00221-20] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 07/31/2020] [Indexed: 12/14/2022] Open
Abstract
Many proteins, including DICER1 and hAgo2, are involved in the biogenesis of microRNAs (miRNAs). Whether hAgo2 regulates DICER1 expression is unknown. Exogenously overexpressed hAgo2 suppressed DICER1 expression at the levels of both protein and mRNA, and the reduction in hAgo2 expression enhanced DICER1 expression. Precursor miRNA processing mediated by DICER1 was also modulated by hAgo2. However, hAgo2 protein did not suppress DICER1 promoter activity. Therefore, hAgo2 protein probably regulates DICER1 expression at the posttranscriptional level. Indeed, hAgo2 protein inhibited the reporter assay of the DICER1 mRNA 3' untranslated region (3'-UTR). Previous reports have demonstrated that miRNAs (e.g., let-7 and miR-103/107) inhibited DICER1 expression posttranscriptionally. However, hAgo2 still suppressed DICER1 expression in the cells depleted of these miRNAs. Moreover, the reporter activities of the DICER1 mRNA 3'-UTR without these miRNA binding sites were still suppressed by hAgo2. Therefore, in addition to an miRNA-dependent pathway, hAgo2 can also modulate DICER1 expression through an miRNA-independent mechanism. Downregulation of DICER1 expression was further proven to be dependent on both hAgo2 and AUF1 proteins. Interactions of hAgo2 and AUF1 proteins were demonstrated by the coimmunoprecipitation assay. As expected, hAgo2 could not suppress the DICER1 mRNA 3'-UTR reporter with a mutation in the potential AUF1-binding site. Thus, downregulation of DICER1 expression through the 3'-UTR requires both hAgo2 and AUF1.
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17
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Brain Dicer1 Is Down-Regulated in a Mouse Model of Alzheimer's Disease Via Aβ42-Induced Repression of Nuclear Factor Erythroid 2-Related Factor 2. Mol Neurobiol 2020; 57:4417-4437. [PMID: 32737764 DOI: 10.1007/s12035-020-02036-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 07/22/2020] [Indexed: 12/17/2022]
Abstract
Dicer1 is a microRNA-processing enzyme which plays critical roles in neuronal survival and neuritogenesis. Dicer1 deletion induces neurodegeneration or degeneration in retinal pigment epithelium, which is associated with oxidative stress. Oxidative stress is thought to be central in the pathogenesis of Alzheimer's disease (AD). Therefore, we hypothesize that Dicer1 may play roles in AD. Using immunoblotting and quantitative real-time PCR, Dicer1 protein and mRNA were reduced in the hippocampi of the AD mouse model APPswe/PSEN1dE9 compared with littermate controls. SiRNA-mediated Dicer1 knockdown induced oxidative stress and apoptosis and reduced mitochondrial membrane potential in cultured neurons. Chronic Aβ42 exposure decreased Dicer1 and nuclear factor erythroid 2-related factor 2 (Nrf2) which were reversed by N-acetyl-cystein. Nrf2 overexpression increased Dicer1 mRNA and protein and reverted the Aβ42-induced Dicer1 reduction. We further cloned Dicer1 promoter variants harboring the Nrf2-binding site, the antioxidant response elements (ARE), into a luciferase reporter and found that simultaneous transfection of Nrf2-expressing plasmid increased luciferase expression from these promoter constructs. ChIP assays indicated that Nrf2 directly interacted with the ARE motifs in the Dicer1 promoter. Furthermore, Dicer1 overexpression in cultured neurons reverted Aβ42-induced neurite deficits. Notably, injection of Dicer1-expressing adenovirus into the hippocampus of the mice significantly improved spatial learning. Altogether, we found novel roles of Dicer1 in AD and a novel regulatory pathway for Dicer1. These results suggest that Dicer1 is a target in AD therapy, especially at the early stage of this disorder. In this study, we found that Dicer1 was reduced in the brain of AD mice which is the first report to examine Dicer1 in AD. We further found (i) that Aβ42 exposure decreased Dicer1 via attenuating Nrf2-ARE signaling and (ii) injection of Dicer1-expressing adenovirus into the hippocampus of the AD mice significantly improved spatial learning. Altogether, we found novel roles of Dicer1 in AD and a novel regulatory pathway for Dicer1. This study may open new avenues for investigating potential pathognomonics and pathogenesis in AD.
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18
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Vishlaghi N, Lisse TS. Dicer- and Bulge Stem Cell-Dependent MicroRNAs During Induced Anagen Hair Follicle Development. Front Cell Dev Biol 2020; 8:338. [PMID: 32478074 PMCID: PMC7240072 DOI: 10.3389/fcell.2020.00338] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/17/2020] [Indexed: 11/17/2022] Open
Abstract
MicroRNAs (miRNAs) are a major class of conserved non-coding RNAs that have a wide range of functions during development and disease. Biogenesis of canonical miRNAs depend on the cytoplasmic processing of pre-miRNAs to mature miRNAs by the Dicer endoribonuclease. Once mature miRNAs are generated, the miRNA-induced silencing complex (miRISC), or miRISC, incorporates one strand of miRNAs as a template for recognizing complementary target messenger RNAs (mRNAs) to dictate post-transcriptional gene expression. Besides regulating miRNA biogenesis, Dicer is also part of miRISC to assist in activation of the complex. Dicer associates with other regulatory miRISC co-factors such as trans-activation responsive RNA-binding protein 2 (Tarbp2) to regulate miRNA-based RNA interference. Although the functional role of miRNAs within epidermal keratinocytes has been extensively studied within embryonic mouse skin, its contribution to the normal function of hair follicle bulge stem cells (BSCs) during post-natal hair follicle development is unclear. With this question in mind, we sought to ascertain whether Dicer-Tarpb2 plays a functional role within BSCs during induced anagen development by utilizing conditional knockout mouse models. Our findings suggest that Dicer, but not Tarbp2, functions within BSCs to regulate induced anagen (growth phase) development of post-natal hair follicles. These findings strengthen our understanding of miRNA-dependency within hair follicle cells during induced anagen development.
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Affiliation(s)
- Neda Vishlaghi
- Department of Biology, University of Miami, Coral Gables, FL, United States
| | - Thomas S Lisse
- Department of Biology, University of Miami, Coral Gables, FL, United States.,Sylvester Comprehensive Cancer Center, Miller School of Medicine, University of Miami, Miami, FL, United States
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19
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Gacem N, Kavo A, Zerad L, Richard L, Mathis S, Kapur RP, Parisot M, Amiel J, Dufour S, de la Grange P, Pingault V, Vallat JM, Bondurand N. ADAR1 mediated regulation of neural crest derived melanocytes and Schwann cell development. Nat Commun 2020; 11:198. [PMID: 31924792 PMCID: PMC6954203 DOI: 10.1038/s41467-019-14090-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 12/09/2019] [Indexed: 01/14/2023] Open
Abstract
The neural crest gives rise to numerous cell types, dysfunction of which contributes to many disorders. Here, we report that adenosine deaminase acting on RNA (ADAR1), responsible for adenosine-to-inosine editing of RNA, is required for regulating the development of two neural crest derivatives: melanocytes and Schwann cells. Neural crest specific conditional deletion of Adar1 in mice leads to global depigmentation and absence of myelin from peripheral nerves, resulting from alterations in melanocyte survival and differentiation of Schwann cells, respectively. Upregulation of interferon stimulated genes precedes these defects, which are associated with the triggering of a signature resembling response to injury in peripheral nerves. Simultaneous extinction of MDA5, a key sensor of unedited RNA, rescues both melanocytes and myelin defects in vitro, suggesting that ADAR1 safeguards neural crest derivatives from aberrant MDA5-mediated interferon production. We thus extend the landscape of ADAR1 function to the fields of neural crest development and disease.
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Affiliation(s)
- Nadjet Gacem
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, INSERM UMR 1163, Universite Paris Descartes-Universite de Paris, Paris, France.,INSERM, U955, Equipe 06, 8, rue du General Sarrail, 94010, Creteil Cedex, France
| | - Anthula Kavo
- INSERM, U955, Equipe 06, 8, rue du General Sarrail, 94010, Creteil Cedex, France.,Faculte de Medecine, Universite Paris Est, 94000, Creteil, France
| | - Lisa Zerad
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, INSERM UMR 1163, Universite Paris Descartes-Universite de Paris, Paris, France
| | - Laurence Richard
- Department of Neurology, Centre de Reference Neuropathies Peripheriques Rares, 2 avenue Martin-Luther-King, 87042, Limoges, France
| | - Stephane Mathis
- Department of Neurology (Nerve-Muscle Unit) and Grand Sud-Ouest National Reference Center for Neuromuscular Disorders, CHU Bordeaux, Pellegrin Hospital, 33076, Bordeaux, France
| | - Raj P Kapur
- Department of Pathology, Seattle Children's Hospital and University of Washington, 4800 Sand Point Way NE, Seattle, WA, 98105, USA
| | - Melanie Parisot
- Genomics Core Facility, Institut Imagine-Structure Federative de Recherche Necker, INSERM U1163 and INSERM US24/CNRS UMS3633, 24 bvd Montparnasse, 75015, Paris, France
| | - Jeanne Amiel
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, INSERM UMR 1163, Universite Paris Descartes-Universite de Paris, Paris, France
| | - Sylvie Dufour
- INSERM, U955, Equipe 06, 8, rue du General Sarrail, 94010, Creteil Cedex, France.,Faculte de Medecine, Universite Paris Est, 94000, Creteil, France
| | | | - Veronique Pingault
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, INSERM UMR 1163, Universite Paris Descartes-Universite de Paris, Paris, France.,Service de Genetique Moleculaire, Hopital Necker-Enfants-Malades, 149 rue de Sevres, 75015, Paris, France
| | - Jean Michel Vallat
- Department of Neurology, Centre de Reference Neuropathies Peripheriques Rares, 2 avenue Martin-Luther-King, 87042, Limoges, France
| | - Nadege Bondurand
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, INSERM UMR 1163, Universite Paris Descartes-Universite de Paris, Paris, France. .,INSERM, U955, Equipe 06, 8, rue du General Sarrail, 94010, Creteil Cedex, France.
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20
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Linck-Paulus L, Hellerbrand C, Bosserhoff AK, Dietrich P. Dissimilar Appearances Are Deceptive-Common microRNAs and Therapeutic Strategies in Liver Cancer and Melanoma. Cells 2020; 9:E114. [PMID: 31906510 PMCID: PMC7017070 DOI: 10.3390/cells9010114] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 12/20/2019] [Accepted: 12/23/2019] [Indexed: 12/13/2022] Open
Abstract
: In this review, we summarize the current knowledge on miRNAs as therapeutic targets in two cancer types that were frequently described to be driven by miRNAs-melanoma and hepatocellular carcinoma (HCC). By focusing on common microRNAs and associated pathways in these-at first sight-dissimilar cancer types, we aim at revealing similar molecular mechanisms that are evolved in microRNA-biology to drive cancer progression. Thereby, we also want to outlay potential novel therapeutic strategies. After providing a brief introduction to general miRNA biology and basic information about HCC and melanoma, this review depicts prominent examples of potent oncomiRs and tumor-suppressor miRNAs, which have been proven to drive diverse cancer types including melanoma and HCC. To develop and apply miRNA-based therapeutics for cancer treatment in the future, it is essential to understand how miRNA dysregulation evolves during malignant transformation. Therefore, we highlight important aspects such as genetic alterations, miRNA editing and transcriptional regulation based on concrete examples. Furthermore, we expand our illustration by focusing on miRNA-associated proteins as well as other regulators of miRNAs which could also provide therapeutic targets. Finally, design and delivery strategies of miRNA-associated therapeutic agents as well as potential drawbacks are discussed to address the question of how miRNAs might contribute to cancer therapy in the future.
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Affiliation(s)
- Lisa Linck-Paulus
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
| | - Claus Hellerbrand
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
- Comprehensive Cancer Center (CCC) Erlangen-EMN, 91054 Erlangen, Germany
| | - Anja K. Bosserhoff
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
- Comprehensive Cancer Center (CCC) Erlangen-EMN, 91054 Erlangen, Germany
| | - Peter Dietrich
- Institute of Biochemistry, Emil-Fischer-Zentrum, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany; (L.L.-P.); (C.H.)
- Department of Medicine 1, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nürnberg, 91054 Erlangen, Germany
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21
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Abstract
In this review, Goding and Arnheiter present the current understanding of MITF's role and regulation in development and disease and highlight key areas where our knowledge of MITF regulation and function is limited. All transcription factors are equal, but some are more equal than others. In the 25 yr since the gene encoding the microphthalmia-associated transcription factor (MITF) was first isolated, MITF has emerged as a key coordinator of many aspects of melanocyte and melanoma biology. Like all transcription factors, MITF binds to specific DNA sequences and up-regulates or down-regulates its target genes. What marks MITF as being remarkable among its peers is the sheer range of biological processes that it appears to coordinate. These include cell survival, differentiation, proliferation, invasion, senescence, metabolism, and DNA damage repair. In this article we present our current understanding of MITF's role and regulation in development and disease, as well as those of the MITF-related factors TFEB and TFE3, and highlight key areas where our knowledge of MITF regulation and function is limited.
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Affiliation(s)
- Colin R Goding
- Ludwig Institute for Cancer Research, Nuffield Department of Clinical Medicine, University of Oxford, Headington, Oxford OX3 7DQ, United Kingdom
| | - Heinz Arnheiter
- National Institute of Neurological Disorders and Stroke, National Institutes of Heath, Bethesda, Maryland 20824, USA
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22
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MDA-7/IL-24 regulates the miRNA processing enzyme DICER through downregulation of MITF. Proc Natl Acad Sci U S A 2019; 116:5687-5692. [PMID: 30842276 DOI: 10.1073/pnas.1819869116] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Melanoma differentiation-associated gene-7/interleukin-24 (mda-7/IL-24) is a multifunctional cytokine displaying broad-spectrum anticancer activity in vitro or in vivo in preclinical animal cancer models and in a phase 1/2 clinical trial in patients with advanced cancers. mda-7/IL-24 targets specific miRNAs, including miR-221 and miR-320, for down-regulation in a cancer-selective manner. We demonstrate that mda-7/IL-24, administered through a replication incompetent type 5 adenovirus (Ad.mda-7) or with His-MDA-7/IL-24 protein, down-regulates DICER, a critical regulator in miRNA processing. This effect is specific for mature miR-221, as it does not affect Pri-miR-221 expression, and the DICER protein, as no changes occur in other miRNA processing cofactors, including DROSHA, PASHA, or Argonaute. DICER is unchanged by Ad.mda-7/IL-24 in normal immortal prostate cells, whereas Ad.mda-7 down-regulates DICER in multiple cancer cells including glioblastoma multiforme and prostate, breast, lung, and liver carcinoma cells. MDA-7/IL-24 protein down-regulates DICER expression through canonical IL-20/IL-22 receptors. Gain- and loss-of-function studies confirm that overexpression of DICER rescues deregulation of miRNAs by mda-7/IL-24, partially rescuing cancer cells from mda-7/IL-24-mediated cell death. Stable overexpression of DICER in cancer cells impedes Ad.mda-7 or His-MDA-7/IL-24 inhibition of cell growth, colony formation, PARP cleavage, and apoptosis. In addition, stable overexpression of DICER renders cancer cells more resistant to Ad.mda-7 inhibition of primary and secondary tumor growth. MDA-7/IL-24-mediated regulation of DICER is reactive oxygen species-dependent and mediated by melanogenesis-associated transcription factor. Our research uncovers a distinct role of mda-7/IL-24 in the regulation of miRNA biogenesis through alteration of the MITF-DICER pathway.
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23
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Weiner AMJ, Scampoli NL, Steeman TJ, Dooley CM, Busch-Nentwich EM, Kelsh RN, Calcaterra NB. Dicer1 is required for pigment cell and craniofacial development in zebrafish. BIOCHIMICA ET BIOPHYSICA ACTA-GENE REGULATORY MECHANISMS 2019; 1862:472-485. [PMID: 30840854 DOI: 10.1016/j.bbagrm.2019.02.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2018] [Revised: 02/22/2019] [Accepted: 02/23/2019] [Indexed: 12/22/2022]
Abstract
The multidomain RNase III endoribonuclease DICER is required for the generation of most functional microRNAs (miRNAs). Loss of Dicer affects developmental processes at different levels. Here, we characterized the zebrafish Dicer1 mutant, dicer1sa9205, which has a single point mutation induced by N-ethyl-N-nitrosourea mutagenesis. Heterozygous dicer1sa9205 developed normally, being phenotypically indistinguishable from wild-type siblings. Homozygous dicer1sa9205 mutants display smaller eyes, abnormal craniofacial development and aberrant pigmentation. Reduced numbers of both iridophores and melanocytes were observed in the head and ventral trunk of dicer1sa9205 homozygotes; the effect on melanocytes was stronger and detectable earlier in development. The expression of microphthalmia-associated transcription factor a (mitfa), the master gene for melanocytes differentiation, was enhanced in dicer1-depleted fish. Similarly, the expression of SRY-box containing gene 10 (sox10), required for mitfa activation, was higher in mutants than in wild types. In silico and in vivo analyses of either sox10 or mitfa 3'UTRs revealed conserved potential miRNA binding sites likely involved in the post-transcriptional regulation of both genes. Based on these findings, we propose that dicer1 participates in the gene regulatory network governing zebrafish melanocyte differentiation by controlling the expression of mitfa and sox10.
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Affiliation(s)
- Andrea M J Weiner
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Ocampo y Esmeralda, S2000EZP Rosario, Argentina.
| | - Nadia L Scampoli
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Ocampo y Esmeralda, S2000EZP Rosario, Argentina
| | - Tomás J Steeman
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Ocampo y Esmeralda, S2000EZP Rosario, Argentina
| | - Christopher M Dooley
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SA, United Kingdom
| | - Elisabeth M Busch-Nentwich
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton CB10 1SA, United Kingdom; Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
| | - Robert N Kelsh
- Department of Biology and Biochemistry, University of Bath, Claverton Down, Bath, United Kingdom
| | - Nora B Calcaterra
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Ocampo y Esmeralda, S2000EZP Rosario, Argentina.
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24
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Constitutive Dicer1 phosphorylation accelerates metabolism and aging in vivo. Proc Natl Acad Sci U S A 2018; 116:960-969. [PMID: 30593561 DOI: 10.1073/pnas.1814377116] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
DICER1 gene alterations and decreased expression are associated with developmental disorders and diseases in humans. Oscillation of Dicer1 phosphorylation and dephosphorylation regulates its function during the oocyte-to-embryo transition in Caenorhabditis elegans Dicer1 is also phosphorylated upon FGF stimulation at conserved serines in mouse embryonic fibroblasts and HEK293 cells. However, whether phosphorylation of Dicer1 has a role in mammalian development remains unknown. To investigate the consequence of constitutive phosphorylation, we generated phosphomimetic knock-in mouse models by replacing conserved serines 1712 and 1836 with aspartic acids individually or together. Dicer1 S1836D/S1836D mice display highly penetrant postnatal lethality, and the few survivors display accelerated aging and infertility. Homozygous dual-phosphomimetic Dicer1 augments these defects, alters metabolism-associated miRNAs, and causes a hypermetabolic phenotype. Thus, constitutive phosphorylation of Dicer1 results in multiple pathologic processes in mice, indicating that phosphorylation tightly regulates Dicer1 function and activity in mammals.
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25
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Identification and characterization of skin color microRNAs in Koi carp (Cyprinus carpio L.) by Illumina sequencing. BMC Genomics 2018; 19:779. [PMID: 30373521 PMCID: PMC6206873 DOI: 10.1186/s12864-018-5189-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 10/19/2018] [Indexed: 01/19/2023] Open
Abstract
Background MicroRNAs (miRNAs) are endogenous, small (21–25 nucleotide), non-coding RNAs that play important roles in numerous biological processes. Koi carp exhibit diverse color patterns, making it an ideal subject for studying the genetics of pigmentation. However, the influence of miRNAs on skin color regulation and variation in Koi carp is poorly understood. Results Herein, we performed small RNA (sRNA) analysis of the three main skin colors in Koi carp by Illumina sequencing. The results revealed 330, 397, and 335 conserved miRNAs (belonging to 81 families) and 340, 353, and 351 candidate miRNAs in black, red, and white libraries, respectively. A total of 164 differentially expressed miRNAs (DEMs) and 14 overlapping DEMs were identified, including miR-196a, miR-125b, miR-202, miR-205-5p, miR-200b, and etc. Target prediction and functional analysis of color-related miRNAs such as miR-200b, miR-206, and miR-196a highlighted putative target genes, including Mitf, Mc1r, Foxd3, and Sox10 that are potentially related to pigmentation. Determination of reference miRNAs for relative quantification showed that let-7a was the most abundant single reference gene, and let-7a and miR-26b was the most abundant combination. Conclusions The findings provide novel insight into the molecular mechanisms determining skin color differentiation in Koi carp, and serve as a valuable reference for future studies on tissue-specific miRNA abundance in Koi carp. Electronic supplementary material The online version of this article (10.1186/s12864-018-5189-5) contains supplementary material, which is available to authorized users.
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26
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Malcov-Brog H, Alpert A, Golan T, Parikh S, Nordlinger A, Netti F, Sheinboim D, Dror I, Thomas L, Cosson C, Gonen P, Stanevsky Y, Brenner R, Perluk T, Frand J, Elgavish S, Nevo Y, Rahat D, Tabach Y, Khaled M, Shen-Orr SS, Levy C. UV-Protection Timer Controls Linkage between Stress and Pigmentation Skin Protection Systems. Mol Cell 2018; 72:444-456.e7. [PMID: 30401431 PMCID: PMC6224604 DOI: 10.1016/j.molcel.2018.09.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 08/15/2018] [Accepted: 09/18/2018] [Indexed: 11/25/2022]
Abstract
Skin sun exposure induces two protection programs: stress responses and pigmentation, the former within minutes and the latter only hours afterward. Although serving the same physiological purpose, it is not known whether and how these programs are coordinated. Here, we report that UVB exposure every other day induces significantly more skin pigmentation than the higher frequency of daily exposure, without an associated increase in stress responses. Using mathematical modeling and empirical studies, we show that the melanocyte master regulator, MITF, serves to synchronize stress responses and pigmentation and, furthermore, functions as a UV-protection timer via damped oscillatory dynamics, thereby conferring a trade-off between the two programs. MITF oscillations are controlled by multiple negative regulatory loops, one at the transcriptional level involving HIF1α and another post-transcriptional loop involving microRNA-148a. These findings support trait linkage between the two skin protection programs, which, we speculate, arose during furless skin evolution to minimize skin damage. UV exposure frequency reveals a trade-off between skin protection programs MITF dynamics synchronize skin stress responses and pigmentation MITF serves as a UV-protection timer Two negative regulatory loops involving miR-148a and HIF1α underlie MITF dynamics
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Affiliation(s)
- Hagar Malcov-Brog
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ayelet Alpert
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Tamar Golan
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Shivang Parikh
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Alice Nordlinger
- INSERM U1186, Gustave Roussy Cancer Center, Université Paris-Saclay, Villejuif 94805, France
| | - Francesca Netti
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Danna Sheinboim
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | - Iris Dror
- Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Laetitia Thomas
- INSERM U1186, Gustave Roussy Cancer Center, Université Paris-Saclay, Villejuif 94805, France
| | - Camille Cosson
- INSERM U1186, Gustave Roussy Cancer Center, Université Paris-Saclay, Villejuif 94805, France
| | - Pinchas Gonen
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel
| | | | | | | | - Jacob Frand
- E. Wolfson Medical Center, Holon 58100, Israel
| | - Sharona Elgavish
- Bioinformatics Unit of the I-CORE Computation Center, Hebrew University, Jerusalem 91120, Israel
| | - Yuval Nevo
- Bioinformatics Unit of the I-CORE Computation Center, Hebrew University, Jerusalem 91120, Israel
| | - Dolev Rahat
- Department of Developmental Biology and Cancer Research, Hadassah Medical School, Hebrew University, Jerusalem 91120, Israel
| | - Yuval Tabach
- Department of Developmental Biology and Cancer Research, Hadassah Medical School, Hebrew University, Jerusalem 91120, Israel
| | - Mehdi Khaled
- INSERM U1186, Gustave Roussy Cancer Center, Université Paris-Saclay, Villejuif 94805, France.
| | - Shai S Shen-Orr
- Faculty of Medicine, Technion - Israel Institute of Technology, Haifa 3200003, Israel.
| | - Carmit Levy
- Department of Human Genetics and Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 69978, Israel.
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27
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Nordlinger A, Dror S, Elkahloun A, Del Rio J, Stubbs E, Golan T, Malcov H, Pricket TD, Cronin JC, Parikh S, Labes S, Thomas L, Yankovitz G, Tabach Y, Levy C, Samuels Y, Khaled M. Mutated MITF-E87R in Melanoma Enhances Tumor Progression via S100A4. J Invest Dermatol 2018; 138:2216-2223. [DOI: 10.1016/j.jid.2018.03.1524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 02/13/2018] [Accepted: 03/15/2018] [Indexed: 01/16/2023]
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28
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Teijeiro V, Yang D, Majumdar S, González F, Rickert RW, Xu C, Koche R, Verma N, Lai EC, Huangfu D. DICER1 Is Essential for Self-Renewal of Human Embryonic Stem Cells. Stem Cell Reports 2018; 11:616-625. [PMID: 30146489 PMCID: PMC6135725 DOI: 10.1016/j.stemcr.2018.07.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 07/27/2018] [Accepted: 07/27/2018] [Indexed: 02/01/2023] Open
Abstract
MicroRNAs (miRNAs) are the effectors of a conserved gene-silencing system with broad roles in post-transcriptional regulation. Due to functional overlaps, assigning specific functions to individual miRNAs has been challenging. DICER1 cleaves pre-miRNA hairpins into mature miRNAs, and previously Dicer1 knockout mouse embryonic stem cells have been generated to study miRNA function in early mouse development. Here we report an essential requirement of DICER1 for the self-renewal of human embryonic stem cells (hESCs). Utilizing a conditional knockout approach, we found that DICER1 deletion led to increased death receptor-mediated apoptosis and failure of hESC self-renewal. We further devised a targeted miRNA screening strategy and uncovered essential pro-survival roles of members of the mir-302-367 and mir-371-373 clusters that bear the seed sequence AAGUGC. This platform is uniquely suitable for dissecting the roles of individual miRNAs in hESC self-renewal and differentiation, which may help us better understand the early development of human embryos. Conditional DICER1 knockouts enable the study of its essential requirement in hESCs DICER1 deletion leads to increased extrinsic (receptor-mediated) apoptosis miRNAs rescue the DICER1 knockout apoptotic phenotype This work provides a platform for interrogating miRNA function in hESCs
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Affiliation(s)
- Virginia Teijeiro
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Weill Cornell Graduate School of Medical Sciences, 1300 York Avenue, New York, NY 10065, USA
| | - Dapeng Yang
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Sonali Majumdar
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Federico González
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Robert W Rickert
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Chunlong Xu
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Richard Koche
- Center for Epigenetics Research, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Nipun Verma
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA; Weill Cornell Graduate School of Medical Sciences, Tri-Institutional M.D.-Ph.D. Program, 1300 York Avenue, New York, NY 10065, USA
| | - Eric C Lai
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Danwei Huangfu
- Developmental Biology Program, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
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29
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Zhu W, Liu L, Wang X, Gao X, Jiang J, Wang B. Transcriptomics reveals the molecular processes of light-induced rapid darkening of the non-obligate cave dweller Oreolalax rhodostigmatus (Megophryidae, Anura) and their genetic basis of pigmentation strategy. BMC Genomics 2018; 19:422. [PMID: 29855256 PMCID: PMC5984452 DOI: 10.1186/s12864-018-4790-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 05/14/2018] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Vertebrates use different pigmentation strategies to adapt to various environments. A large amount of research has been done on disclosing the mechanisms of pigmentation strategies in vertebrates either under light, or, living in constant darkness. However, less attention has been paid to non-obligate, darkness dwellers. Red-spotted toothed toads Oreolalax rhodostigmatus (Megophryidae; Anura) from the karst mountainous region of southwestern China are non-obligate cave dwellers. Most tadpoles of the species possess transparent skin as they inhabit the dark karst caves. But remarkably, the transparent tadpoles can darken just within 15 h once exposed to light. Obviously, it is very significant to reveal molecular mechanisms of the unexpected rapid-darkening phenomenon. RESULTS We compared the transcriptomes of O. rhodostigmatus tadpoles with different durations of light exposure to investigate the cellular processes and potential regulation signals for their light-induced rapid darkening. Genes involved in melanogenesis (i.e. TYR, TYRP1 and DCT) and melanocyte proliferation, as well as their transcriptional factor (MITF), showed light-induced transcription, suggesting a dominating role of morphological color change (MCC) in this process. Transcription of genes related to growth factor, MAPK and PI3K-Akt pathways increased with time of light exposure, suggesting that light could induce significant growth signal, which might facilitate the rapid skin darkening. Most importantly, an in-frame deletion of four residues was identified in O. rhodostigmatus melanocortin-1 receptor (MC1R), a critical receptor in MCC. This deletion results in a more negatively charged ligand pocket with three stereo-tandem aspartate residues. Such structural changes likely decrease the constitutive activity of MC1R, but increase its ligands-dependent activity, thus coordinating pigment regression and rapid melanogenesis in the dark and light, respectively. CONCLUSION Our study suggested that rapid MCC was responsible for the light-induced rapid darkening of O. rhodostigmatus tadpoles. Genetic mutations of MC1R in them could explain how these non-obligate cave dwellers coordinate pigment regression and robust melanogenesis in darkness and light, respectively. To our knowledge, this is the first study that reports the association between pigmentation phenotype adaptation and MC1R mutations in amphibians and/or in non-obligate cave dwellers.
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Affiliation(s)
- Wei Zhu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Lusha Liu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Xungang Wang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xinyu Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Jianping Jiang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
| | - Bin Wang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China.
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30
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Weiner AMJ. MicroRNAs and the neural crest: From induction to differentiation. Mech Dev 2018; 154:98-106. [PMID: 29859253 DOI: 10.1016/j.mod.2018.05.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2018] [Revised: 05/18/2018] [Accepted: 05/28/2018] [Indexed: 01/06/2023]
Abstract
MicroRNAs are small noncoding RNAs that can control gene expression by base pairing to partially complementary mRNAs. Regulation by microRNAs plays essential roles in diverse biological processes such as neural crest formation during embryonic development. The neural crest is a multipotent cell population that develops from the dorsal neural fold of vertebrate embryos in order to migrate extensively and differentiate into a variety of tissues. Gene regulatory networks that coordinate neural crest cell specification and differentiation have been considerably studied so far. Although it is known that microRNAs play important roles in neural crest development, posttranscriptional regulation by microRNAs has not been deeply characterized yet. This review is focused on the microRNAs identified so far in order to regulate gene expression of neural crest cells during vertebrate development.
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Affiliation(s)
- Andrea M J Weiner
- Instituto de Biología Molecular y Celular de Rosario (IBR), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) - Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario (UNR), Ocampo y Esmeralda, S2000EZP Rosario, Argentina.
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31
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Li H, Hou L. Regulation of melanocyte stem cell behavior by the niche microenvironment. Pigment Cell Melanoma Res 2018; 31:556-569. [PMID: 29582573 DOI: 10.1111/pcmr.12701] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Accepted: 03/05/2018] [Indexed: 12/17/2022]
Abstract
Somatic stem cells are regulated by their niches to maintain tissue homeostasis and repair throughout the lifetime of an organism. An excellent example to study stem cell/niche interactions is provided by the regeneration of melanocytes during the hair cycle and in response to various types of injury. These processes are regulated by neighboring stem cells and multiple signaling pathways, including WNT/β-catenin, KITL/KIT, EDNs/EDNRB, TGF-β/TGF-βR, α-MSH/MC1R, and Notch signaling. In this review, we highlight recent studies that have advanced our understanding of the molecular crosstalk between melanocyte stem cells and their neighboring cells, which collectively form the niche microenvironment, and we focus on the question of how McSCs/niche interactions shape the responses to genotoxic damages and mechanical injury.
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Affiliation(s)
- Huirong Li
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China
| | - Ling Hou
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, China.,State Key Laboratory of Ophthalmology, Optometry and Vision Science and Key Laboratory of Vision Science of Ministry of Health and Zhejiang Provincial Key Laboratory of Ophthalmology, Wenzhou Medical University, Wenzhou, China
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32
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Barbier J, Chen X, Sanchez G, Cai M, Helsmoortel M, Higuchi T, Giraud P, Contreras X, Yuan G, Feng Z, Nait-Saidi R, Deas O, Bluy L, Judde JG, Rouquier S, Ritchie W, Sakamoto S, Xie D, Kiernan R. An NF90/NF110-mediated feedback amplification loop regulates dicer expression and controls ovarian carcinoma progression. Cell Res 2018; 28:556-571. [PMID: 29563539 DOI: 10.1038/s41422-018-0016-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 01/26/2018] [Accepted: 01/28/2018] [Indexed: 01/16/2023] Open
Abstract
Reduced expression of DICER, a key enzyme in the miRNA pathway, is frequently associated with aggressive, invasive disease, and poor survival in various malignancies. Regulation of DICER expression is, however, poorly understood. Here, we show that NF90/NF110 facilitates DICER expression by controlling the processing of a miRNA, miR-3173, which is embedded in DICER pre-mRNA. As miR-3173 in turn targets NF90, a feedback amplification loop controlling DICER expression is established. In a nude mouse model, NF90 overexpression reduced proliferation of ovarian cancer cells and significantly reduced tumor size and metastasis, whereas overexpression of miR-3173 dramatically increased metastasis in an NF90- and DICER-dependent manner. Clinically, low NF90 expression and high miR-3173-3p expression were found to be independent prognostic markers of poor survival in a cohort of ovarian carcinoma patients. These findings suggest that, by facilitating DICER expression, NF90 can act as a suppressor of ovarian carcinoma.
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Affiliation(s)
- Jérôme Barbier
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Xin Chen
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France.,State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Gabriel Sanchez
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Muyan Cai
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Marion Helsmoortel
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Takuma Higuchi
- Laboratory of Molecular Biology, Science Research Center, Kochi Medical School, Kochi University, Kochi, 783-8505, Japan
| | - Pierre Giraud
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Xavier Contreras
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Gangjun Yuan
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China
| | - Zihao Feng
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, 510060, China
| | - Rima Nait-Saidi
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - Olivier Deas
- XenTech SAS, 4 rue Pierre Fontaine, Evry, 91000, France
| | - Lisa Bluy
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | | | - Sylvie Rouquier
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France
| | - William Ritchie
- Institut de Génétique Humaine, CNRS, University of Montpellier, Machine Learning and Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, 34396, France
| | - Shuji Sakamoto
- Laboratory of Molecular Biology, Science Research Center, Kochi Medical School, Kochi University, Kochi, 783-8505, Japan
| | - Dan Xie
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, 510060, China.
| | - Rosemary Kiernan
- Institut de Génétique Humaine, CNRS, University of Montpellier, Gene Regulation Laboratory, 141 rue de la cardonille, Montpellier, France.
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33
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Liu X, Zhang P, Ji K, Zhang J, Yang S, Du B, Hu S, Fan R. Cyclin-dependent kinase 5 regulates MAPK/ERK signaling in the skin of mice. Acta Histochem 2018; 120:15-21. [PMID: 29132690 DOI: 10.1016/j.acthis.2017.10.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2017] [Revised: 10/28/2017] [Accepted: 10/30/2017] [Indexed: 12/11/2022]
Abstract
Cyclin-dependent kinase 5 (CDK5) is a proline-directed serine/threonine kinase that has been shown to play important roles in many tissues except the nervous system. We previously reported that CDK5 showed differential expression in the transcriptome profiles of the skin of alpacas with different hair colors. To understand the functional role of CDK5 in hair color determination, we constructed CDK5-knockdown mice and identified the effect on the mitogen-activated protein kinase (MAPK) pathway in the mouse skin. Quantitative real-time polymerase chain reaction, co-immunoprecipitation, and western blotting were performed to analyze the effects of CDK5-knockdown on the MAPK pathway in mice. The results showed that MAP3K6 was inhibited by phosphorylated CDK5 through its activator CDK7. The decrease in MAP3K6 levels caused down-regulation of MEK1 and ERK expression, leading to the up-regulation of miR-143-3p, which targets MAP3K6 via Dicer. Taken together, our findings indicate that CDK5 functions in regulating the MAPK pathway. Given that MAP3K6 was inhibited in two directions, this mechanism can provide insight into the contributions of the MAPK/ERK pathway to the inhibition of melanin production.
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Affiliation(s)
- Xuexian Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China
| | - Pengqian Zhang
- Department of Ecology Research, Beijing Milu Ecological Research Center, Nanhaizi, Daxing District, Beijing 102600, China
| | - Kaiyuan Ji
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China
| | - Junzhen Zhang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China
| | - Shanshan Yang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China
| | - Bin Du
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China
| | - Shuaipeng Hu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China
| | - Ruiwen Fan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Mingxian South Road, Taigu 030801, China.
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34
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Gazon H, Belrose G, Terol M, Meniane JC, Mesnard JM, Césaire R, Peloponese JM. Impaired expression of DICER and some microRNAs in HBZ expressing cells from acute adult T-cell leukemia patients. Oncotarget 2017; 7:30258-75. [PMID: 26849145 PMCID: PMC5058679 DOI: 10.18632/oncotarget.7162] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Accepted: 01/20/2016] [Indexed: 12/21/2022] Open
Abstract
Global dysregulation of microRNAs (miRNAs), a class of non-coding RNAs that regulate genes expression, is a common feature of human tumors. Profiling of cellular miRNAs on Adult T cell Leukemia (ATL) cells by Yamagishi et al. showed a strong decrease in expression for 96.7% of cellular miRNAs in ATL cells. However, the mechanisms that regulate the expression of miRNAs in ATL cells are still largely unknown. In this study, we compared the expression of 12 miRs previously described for being overexpress by Tax and the expression of several key components of the miRNAs biogenesis pathways in different HBZ expressing cell lines as well as in primary CD4 (+) cells from acute ATL patients. We showed that the expression of miRNAs and Dicer1 were downregulated in cells lines expressing HBZ as well as in fresh CD4 (+) cells from acute ATL patients. Using qRT-PCR, western blotting analysis and Chromatin Immunoprecipitation, we showed that dicer transcription was regulated by c-Jun and JunD, two AP-1 transcription factors. We also demonstrated that HBZ affects the expression of Dicer by removing JunD from the proximal promoter. Furthermore, we showed that at therapeutic concentration of 1mM, Valproate (VPA) an HDAC inhibitors often used in cancer treatment, rescue Dicer expression and miRNAs maturation. These results might offer a rationale for clinical studies of new combined therapy in an effort to improve the outcome of patients with acute ATL.
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Affiliation(s)
- Hélène Gazon
- CPBS, CNRS UMR 5236, Université Montpellier 1, Montpellier, France.,Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | - Gildas Belrose
- Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | - Marie Terol
- CPBS, CNRS UMR 5236, Université Montpellier 1, Montpellier, France.,Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | - Jean-Come Meniane
- Service Hématologie Clinique, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
| | | | - Raymond Césaire
- Laboratoire de Virologie-Immunologie JE2503, Centre Hospitalier et Universitaire de Martinique, Fort de France, Martinique
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35
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The Molecular Revolution in Cutaneous Biology: Noncoding RNAs: New Molecular Players in Dermatology and Cutaneous Biology. J Invest Dermatol 2017; 137:e105-e111. [PMID: 28411840 DOI: 10.1016/j.jid.2017.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Revised: 12/10/2015] [Accepted: 02/01/2016] [Indexed: 02/06/2023]
Abstract
Progress in genome sequencing achieved during the last two decades revealed that only about 2% of the genome codes for proteins, while the largest genome fraction is encoding thousands of non-coding RNAs. Non-coding RNAs play indispensable roles in regulating the activity and stability of the genome. Recent research in the area of the non-coding transcriptome signified the crucial roles for RNA regulatory networks in the normal development and their implications in a variety of pathological conditions. Here, recent advances in our understanding of non-coding RNA-mediated regulation of skin development and homeostasis are highlighted, focusing mainly on the regulatory roles of miRNAs and lncRNAs.
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36
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Andersson KM, Turkkila M, Erlandsson MC, Bossios A, Silfverswärd ST, Hu D, Ekerljung L, Malmhäll C, Weiner HL, Lundbäck B, Bokarewa MI. Survivin controls biogenesis of microRNA in smokers: A link to pathogenesis of rheumatoid arthritis. Biochim Biophys Acta Mol Basis Dis 2017; 1863:663-673. [DOI: 10.1016/j.bbadis.2016.11.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2016] [Revised: 11/21/2016] [Accepted: 11/30/2016] [Indexed: 12/14/2022]
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37
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Dicer suppresses the malignant phenotype in VHL-deficient clear cell renal cell carcinoma by inhibiting HIF-2α. Oncotarget 2017; 7:18280-94. [PMID: 26943772 PMCID: PMC4951288 DOI: 10.18632/oncotarget.7807] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 01/23/2016] [Indexed: 12/11/2022] Open
Abstract
Both the von Hippel-Lindau (VHL)/hypoxia-inducible factor (HIF) pathway and microRNA (miRNA) regulation are important mechanisms underlying the development and progression of clear cell renal cell carcinoma (ccRCC). Here we demonstrate that VHL deficiency leads to downregulation of Dicer and, in turn, defects in the miRNA biogenesis machinery in ccRCCs. Dicer inhibited expression of HIF-2α, which was a direct target of Dicer-dependent miR-182-5p in VHL-deficient ccRCCs. Ectopic Dicer expression in VHL-deficient ccRCCs suppressed tumor growth and angiogenesis by inhibiting HIF-2α both in vitro and in vivo. Reduced Dicer mRNA levels served as an independent prognostic factor for poor survival in patients with VHL-deficient ccRCC. Our results indicate that downregulation of Dicer in VHL-deficient ccRCCs contributes to high levels of HIF-2α and a malignant phenotype, which suggests Dicer could be a useful therapeutic target for managing this disease.
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38
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Zhou J, Hu Y, Chen Y, Yang L, Song J, Tang Y, Deng F, Zheng L. Dicer-dependent pathway contribute to the osteogenesis mediated by regulation of Runx2. Am J Transl Res 2016; 8:5354-5369. [PMID: 28078008 PMCID: PMC5209488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2016] [Accepted: 10/03/2016] [Indexed: 06/06/2023]
Abstract
Osteogenesis is mediated by sophisticated interactions of various molecular functions and biological processes, including post-transcriptional regulation. A range of miRNAs have been reported to regulate bone homeostasis and osteoblasts differentiation either positively or negatively through multiple signaling pathways. RNase III endonuclease Dicer is the key enzyme required for the biogenesis of miRNAs and small interfering RNAs. To determine the global influence of miRNAs on regulation of osteogenesis of pre-osteoblast cells, the transcriptional regulation of Dicer and the function of Dicer during osteoblast differentiation and mineralization were investigated. Runx2 binding directly to the Dicer promoter region was characterized in MC3T3-E1 cells by chromatin immunoprecipitation (ChIP) and luciferase promoter reporter assays. Overexpression or knockdown of Runx2 resulted in increase or decrease of Dicer expression, respectively. Furthermore, abatement of Dicer in MC3T3-E1 cells down-regulated the expression of osteogenic marker genes and mineralization ability, at least partly involving Dicer-dependent processing of the miR-21a-5p targeting PTEN via pAKT/pGSK3β/β-catenin signaling pathways. Taken together, the study demonstrates the role of Dicer in osteogenesis and suggests that Dicer is required, in part, for Runx2 regulation of osteoblast differentiation.
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Affiliation(s)
- Jie Zhou
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yun Hu
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yang Chen
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Lan Yang
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Jinlin Song
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Yuying Tang
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
| | - Feng Deng
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
| | - Leilei Zheng
- College of Stomatology, Chongqing Medical UniversityChongqing 401147, P. R. China
- Chongqing Key Laboratory of Oral Diseases and Biomedical SciencesChongqing 401147, P. R. China
- Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher EducationChongqing 401147, P. R. China
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39
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Hoffend NC, Magner WJ, Tomasi TB. The epigenetic regulation of Dicer and microRNA biogenesis by Panobinostat. Epigenetics 2016; 12:105-112. [PMID: 27935420 DOI: 10.1080/15592294.2016.1267886] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
microRNAs (miRs) are small noncoding RNAs that regulate/fine tune many cellular protein networks by targeting mRNAs for either degradation or translational inhibition. Dicer, a type III endoribonuclease, is a critical component in miR biogenesis and is required for mature microRNA production. Abnormal Dicer expression occurs in numerous cancer types and correlates with poor patient prognosis. Recent reports have demonstrated that epigenetic agents, including histone deacetylase inhibitors (HDACi), may regulate Dicer and miR expression. HDACi are a class of epigenetic agents used to treat cancer, viral infections, and inflammatory disorders. However, little is known regarding the epigenetic regulation of miR biogenesis and function. We therefore investigated whether clinically successful HDACi modulated Dicer expression and found that Panobinostat, a clinically approved HDACi, enhanced Dicer expression via posttranscriptional mechanisms. Studies using proteasome inhibitors suggested that Panobinostat regulated the proteasomal degradation of Dicer. Further studies demonstrated that Panobinostat, despite increasing Dicer protein expression, decreased Dicer activity. This suggests that Dicer protein levels do not necessarily correlate with Dicer activity and mature miR levels. Taken together, we present evidence here that Panobinostat posttranscriptionally regulates Dicer/miR biogenesis and suggest Dicer as a potential therapeutic target in cancer.
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Affiliation(s)
- Nicholas C Hoffend
- a Laboratory of Molecular Medicine, Department of Immunology , Roswell Park Cancer Institute , Buffalo , NY , USA
| | - William J Magner
- a Laboratory of Molecular Medicine, Department of Immunology , Roswell Park Cancer Institute , Buffalo , NY , USA.,b Department of Microbiology & Immunology , School of Medicine and Biomedical Sciences, State University of New York , Buffalo , NY , USA
| | - Thomas B Tomasi
- a Laboratory of Molecular Medicine, Department of Immunology , Roswell Park Cancer Institute , Buffalo , NY , USA.,b Department of Microbiology & Immunology , School of Medicine and Biomedical Sciences, State University of New York , Buffalo , NY , USA.,c Department of Medicine , School of Medicine and Biomedical Sciences, State University of New York , Buffalo , NY , USA
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40
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Dror S, Sander L, Schwartz H, Sheinboim D, Barzilai A, Dishon Y, Apcher S, Golan T, Greenberger S, Barshack I, Malcov H, Zilberberg A, Levin L, Nessling M, Friedmann Y, Igras V, Barzilay O, Vaknine H, Brenner R, Zinger A, Schroeder A, Gonen P, Khaled M, Erez N, Hoheisel JD, Levy C. Melanoma miRNA trafficking controls tumour primary niche formation. Nat Cell Biol 2016; 18:1006-17. [DOI: 10.1038/ncb3399] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 07/18/2016] [Indexed: 12/14/2022]
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41
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Zheng L, Tu Q, Meng S, Zhang L, Yu L, Song J, Hu Y, Sui L, Zhang J, Dard M, Cheng J, Murray D, Tang Y, Lian JB, Stein GS, Chen J. Runx2/DICER/miRNA Pathway in Regulating Osteogenesis. J Cell Physiol 2016; 232:182-91. [PMID: 27064596 DOI: 10.1002/jcp.25406] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 04/07/2016] [Indexed: 12/21/2022]
Abstract
DICER is the central enzyme that cleaves precursor microRNAs (miRNAs) into 21-25 nucleotide duplex in cell lineage differentiation, identity, and survival. In the current study, we characterized the specific bone metabolism genes and corresponding miRNAs and found that DICER and Runt-related transcription factor 2 (Runx2) expressions increased simultaneously during osteogenic differentiation. Luciferase assay showed that Runx2 significantly increased the expression levels of DICER luciferase promoter reporter. Our analysis also revealed weaker DICER expression in embryos of Runx2 knock out mice (Runx2 -/-) compared with that of Runx2 +/- and Runx2 +/+ mice. We further established the calvarial bone critical-size defect (CSD) mouse model. The bone marrow stromal cells (BMSCs) transfected with siRNA targeting DICER were combined with silk scaffolds and transplanted into calvarial bone CSDs. Five weeks post-surgery, micro-CT analysis revealed impaired bone formation, and repairing in calvarial defects with the siRNA targeting DICER group. In conclusion, our results suggest that DICER is specifically regulated by osteogenic master gene Runx2 that binds to the DICER promoter. Consequently, DICER cleaves precursors of miR-335-5p and miR-17-92 cluster to form mature miRNAs, which target and decrease the Dickkopf-related protein 1 (DKK1), and proapoptotic factor BIM levels, respectively, leading to an enhanced Wnt/β-catenin signaling pathway. These intriguing results reveal a central mechanism underlying lineage-specific regulation by a Runx2/DICER/miRNAs cascade during osteogenic differentiation and bone development. Our study, also suggests a potential application of modulating DICER expression for bone tissue repair and regeneration. J. Cell. Physiol. 232: 182-191, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Leilei Zheng
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts.,College of Stomatology, Chongqing Medical University, Chongqing, China
| | - Qisheng Tu
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts.
| | - Shu Meng
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Lan Zhang
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Liming Yu
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Jinlin Song
- College of Stomatology, Chongqing Medical University, Chongqing, China
| | - Yun Hu
- College of Stomatology, Chongqing Medical University, Chongqing, China
| | - Lei Sui
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Jin Zhang
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts.,Department of Anatomy, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Michel Dard
- Periodontology and Implant Dentistry, New York University College of Dentistry, New York, New York
| | - Jessica Cheng
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Dana Murray
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Yin Tang
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts
| | - Jane B Lian
- Department of Biochemistry, University of Vermont College of Medicine, Burlington, Vermont
| | - Gary S Stein
- Department of Biochemistry, University of Vermont College of Medicine, Burlington, Vermont
| | - Jake Chen
- Division of Oral Biology, Tufts University School of Dental Medicine, Boston, Massachusetts.
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42
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Vachtenheim J, Ondrušová L. Microphthalmia-associated transcription factor expression levels in melanoma cells contribute to cell invasion and proliferation. Exp Dermatol 2016; 24:481-4. [PMID: 25866058 DOI: 10.1111/exd.12724] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/30/2015] [Indexed: 12/29/2022]
Abstract
Microphthalmia-associated transcription factor (MITF) is a nodal point in melanoma transcriptional network that regulates dozens of genes with critical functions in cell differentiation, proliferation and survival. Highly variable MITF expression levels exist in tumor cell subpopulations conferring marked heterogeneity and plasticity in the tumor tissue. A model has been postulated whereby lower MITF levels favour cell invasion and suppress proliferation, whereas high levels stimulate differentiation and proliferation. Additionally, MITF is considered to be a prosurvival gene and a lineage addiction oncogene in melanoma. Herein, we review how MITF expression may affect the melanoma phenotype with consequences on the survival, invasion and metastasis of melanoma cells, and we discuss the research challenges.
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Affiliation(s)
- Jiri Vachtenheim
- Laboratory of Transcription and Cell Signaling, Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
| | - Lubica Ondrušová
- Laboratory of Transcription and Cell Signaling, Institute of Medical Biochemistry and Laboratory Diagnostics, 1st Faculty of Medicine, Charles University in Prague, Prague, Czech Republic
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43
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Micevic G, Muthusamy V, Damsky W, Theodosakis N, Liu X, Meeth K, Wingrove E, Santhanakrishnan M, Bosenberg M. DNMT3b Modulates Melanoma Growth by Controlling Levels of mTORC2 Component RICTOR. Cell Rep 2016; 14:2180-2192. [PMID: 26923591 PMCID: PMC4785087 DOI: 10.1016/j.celrep.2016.02.010] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Revised: 11/29/2015] [Accepted: 01/27/2016] [Indexed: 01/22/2023] Open
Abstract
DNA methyltransferase DNMT3B is frequently overexpressed in tumor cells and plays important roles during the formation and progression of several cancer types. However, the specific signaling pathways controlled by DNMT3B in cancers, including melanoma, are poorly understood. Here, we report that DNMT3B plays a pro-tumorigenic role in human melanoma and that DNMT3B loss dramatically suppresses melanoma formation in the Braf/Pten mouse melanoma model. Loss of DNMT3B results in hypomethylation of the miR-196b promoter and increased miR-196b expression, which directly targets the mTORC2 component Rictor. Loss of RICTOR in turn prevents mTORC2 activation, which is critical for melanoma formation and growth. These findings establish Dnmt3b as a regulator of melanoma formation through its effect on mTORC2 signaling. Based on these results, DNMT3B is a potential therapeutic target in melanoma.
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Affiliation(s)
- Goran Micevic
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Viswanathan Muthusamy
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Chemistry, Yale University, New Haven, CT 06510, USA
| | - William Damsky
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Nicholas Theodosakis
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Xiaoni Liu
- Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Katrina Meeth
- Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Emily Wingrove
- Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Manjula Santhanakrishnan
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT 06520, USA
| | - Marcus Bosenberg
- Department of Dermatology, Yale University School of Medicine, New Haven, CT 06520, USA; Department of Pathology, Yale University School of Medicine, New Haven, CT 06520, USA.
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44
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Pan L, Ma X, Wen B, Su Z, Zheng X, Liu Y, Li H, Chen Y, Wang J, Lu F, Qu J, Hou L. Microphthalmia-associated transcription factor/T-box factor-2 axis acts through Cyclin D1 to regulate melanocyte proliferation. Cell Prolif 2015; 48:631-42. [PMID: 26486273 DOI: 10.1111/cpr.12227] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 08/07/2015] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES Control of cell proliferation is critical for accurate cell differentiation and tissue formation, during development and regeneration. Here, we have analysed the role of microphthalmia-associated transcription factor MITF and its direct target, T-box factor TBX2, in regulating proliferation of mammalian neural crest-derived melanocytes. MATERIALS AND METHODS Immunohistochemistry was used to examine spatial and temporal expression of TBX2 in melanocytes in vivo. RNAi and cell proliferation analysis were used to investigate functional roles of TBX2. Furthermore, quantitative RT-PCR, western blot analysis and flow cytometry were used to further scrutinize molecular mechanisms underlying TBX2-dependent cell proliferation. RESULTS TBX2 was found to be co-expressed with MITF in melanocytes of mouse hair follicles. Specific Tbx2 knockdown in primary neural crest cells led to inhibition MITF-positive melanoblast proliferation. Tbx2 knockdown in melan-a cells led to reduction in Cyclin D1 expression and G1-phase cell cycle arrest. TBX2 directly activated Ccnd1 transcription by binding to a specific sequence in the Ccnd1 promoter, and the defect in cell proliferation could be rescued partially by overexpression of Cyclin D1 in Tbx2 knockdown melanocytes. CONCLUSIONS Results suggest that the Mitf-Tbx2-Cyclin D1 pathway played an important role in regulation of melanocyte proliferation, and provided novel insights into the complex physiology of melanocytes.
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Affiliation(s)
- L Pan
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China.,State Key Laboratory Cultivation Base and Key Laboratory of Vision Science of Ministry of Health and Zhejiang Provincial Key Laboratory of Ophthalmology, Wenzhou Medical University, Wenzhou, 325003, China
| | - X Ma
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China.,State Key Laboratory Cultivation Base and Key Laboratory of Vision Science of Ministry of Health and Zhejiang Provincial Key Laboratory of Ophthalmology, Wenzhou Medical University, Wenzhou, 325003, China
| | - B Wen
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - Z Su
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - X Zheng
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - Y Liu
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - H Li
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - Y Chen
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - J Wang
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China
| | - F Lu
- State Key Laboratory Cultivation Base and Key Laboratory of Vision Science of Ministry of Health and Zhejiang Provincial Key Laboratory of Ophthalmology, Wenzhou Medical University, Wenzhou, 325003, China
| | - J Qu
- State Key Laboratory Cultivation Base and Key Laboratory of Vision Science of Ministry of Health and Zhejiang Provincial Key Laboratory of Ophthalmology, Wenzhou Medical University, Wenzhou, 325003, China
| | - L Hou
- Laboratory of Developmental Cell Biology and Disease, School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Wenzhou, 325003, China.,State Key Laboratory Cultivation Base and Key Laboratory of Vision Science of Ministry of Health and Zhejiang Provincial Key Laboratory of Ophthalmology, Wenzhou Medical University, Wenzhou, 325003, China
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45
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Rambow F, Job B, Petit V, Gesbert F, Delmas V, Seberg H, Meurice G, Van Otterloo E, Dessen P, Robert C, Gautheret D, Cornell RA, Sarasin A, Larue L. New Functional Signatures for Understanding Melanoma Biology from Tumor Cell Lineage-Specific Analysis. Cell Rep 2015; 13:840-853. [PMID: 26489459 PMCID: PMC5970542 DOI: 10.1016/j.celrep.2015.09.037] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2014] [Revised: 05/30/2015] [Accepted: 09/14/2015] [Indexed: 01/08/2023] Open
Abstract
Molecular signatures specific to particular tumor types are required to design treatments for resistant tumors. However, it remains unclear whether tumors and corresponding cell lines used for drug development share such signatures. We developed similarity core analysis (SCA), a universal and unsupervised computational framework for extracting core molecular features common to tumors and cell lines. We applied SCA to mRNA/miRNA expression data from various sources, comparing melanoma cell lines and metastases. The signature obtained was associated with phenotypic characteristics in vitro, and the core genes CAPN3 and TRIM63 were implicated in melanoma cell migration/invasion. About 90% of the melanoma signature genes belong to an intrinsic network of transcription factors governing neural development (TFAP2A, DLX2, ALX1, MITF, PAX3, SOX10, LEF1, and GAS7) and miRNAs (211-5p, 221-3p, and 10a-5p). The SCA signature effectively discriminated between two subpopulations of melanoma patients differing in overall survival, and classified MEKi/BRAFi-resistant and -sensitive melanoma cell lines.
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Affiliation(s)
- Florian Rambow
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR3347, 91405 Orsay, France; INSERM U1021, 91405 Orsay, France; Equipe Labellisée - Ligue Nationale contre le Cancer, 91405 Orsay, France
| | - Bastien Job
- Plateforme de Bioinformatique, UMS AMMICA, Gustave-Roussy, 94805 Villejuif, France
| | - Valérie Petit
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR3347, 91405 Orsay, France; INSERM U1021, 91405 Orsay, France; Equipe Labellisée - Ligue Nationale contre le Cancer, 91405 Orsay, France
| | - Franck Gesbert
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR3347, 91405 Orsay, France; INSERM U1021, 91405 Orsay, France; Equipe Labellisée - Ligue Nationale contre le Cancer, 91405 Orsay, France
| | - Véronique Delmas
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR3347, 91405 Orsay, France; INSERM U1021, 91405 Orsay, France; Equipe Labellisée - Ligue Nationale contre le Cancer, 91405 Orsay, France
| | - Hannah Seberg
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA
| | - Guillaume Meurice
- Plateforme de Bioinformatique, UMS AMMICA, Gustave-Roussy, 94805 Villejuif, France
| | - Eric Van Otterloo
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA
| | - Philippe Dessen
- Plateforme de Bioinformatique, UMS AMMICA, Gustave-Roussy, 94805 Villejuif, France
| | | | - Daniel Gautheret
- Plateforme de Bioinformatique, UMS AMMICA, Gustave-Roussy, 94805 Villejuif, France
| | - Robert A Cornell
- Department of Anatomy and Cell Biology, University of Iowa, Iowa City, IA 52242, USA
| | - Alain Sarasin
- Centre National de la Recherche Scientifique (CNRS) UMR8200, Gustave-Roussy and University Paris-Sud, 94805 Villejuif, France
| | - Lionel Larue
- Institut Curie, Normal and Pathological Development of Melanocytes, 91405 Orsay, France; Centre National de la Recherche Scientifique (CNRS) UMR3347, 91405 Orsay, France; INSERM U1021, 91405 Orsay, France; Equipe Labellisée - Ligue Nationale contre le Cancer, 91405 Orsay, France.
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46
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Guan Y, Yao H, Wang J, Sun K, Cao L, Wang Y. NF-κB-DICER-miRs Axis Regulates TNF-α Expression in Responses to Endotoxin Stress. Int J Biol Sci 2015; 11:1257-68. [PMID: 26435691 PMCID: PMC4582149 DOI: 10.7150/ijbs.12611] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 08/07/2015] [Indexed: 12/19/2022] Open
Abstract
Unbalanced tumor necrosis factor (TNF)-α production is associated with pathogenesis of a variety of human diseases. However, the molecular pathways maintaining TNF-α homeostasis remain elusive. Here, we report that NF-κB/p65-DICER-miRs axis negatively regulates TNF-α production. We demonstrated that NF-κB bound to DICER promoter and transcriptionally regulated DICER expression. In addition, the NF-κB/DICER signaling suppresses TNF-α expression by generating mature forms of miR-125b and miR-130a which negatively regulate TNF-α mRNA. Furthermore, we showed that the hepatocyte-specific depletion of Dicer in mice resulted in TNF-α overproduction and sensitized the mice to endotoxin, which could be corrected by administration of miR-125b mimics. These data suggest that NF-κB/p65-DICER-miRs axis involved in maintaining of TNF-α homeostasis, and injection of miR-125b as a potential therapeutic method for septic shock.
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Affiliation(s)
- Yi Guan
- 1. Key Laboratory of Medical Cell Biology, China Medical University, Shenyang, 110122, China
| | - Hailan Yao
- 2. Laboratory of Neural Signal Transduction, Institute of Neuroscience, State Key Laboratory of Neuroscience, SIBS, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Junfeng Wang
- 2. Laboratory of Neural Signal Transduction, Institute of Neuroscience, State Key Laboratory of Neuroscience, SIBS, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Kailai Sun
- 3. Department of Medical Genetics, China Medical University, Shenyang, 110122, China
| | - Liu Cao
- 1. Key Laboratory of Medical Cell Biology, China Medical University, Shenyang, 110122, China
| | - Yizheng Wang
- 2. Laboratory of Neural Signal Transduction, Institute of Neuroscience, State Key Laboratory of Neuroscience, SIBS, Chinese Academy of Sciences, Shanghai, 200031, China
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47
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Andl T, Botchkareva NV. MicroRNAs (miRNAs) in the control of HF development and cycling: the next frontiers in hair research. Exp Dermatol 2015; 24:821-6. [PMID: 26121602 DOI: 10.1111/exd.12785] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2015] [Indexed: 12/17/2022]
Abstract
Hair follicle development and its postnatal regeneration are characterized by dramatic changes in its microanatomy and cellular activity, which are controlled by multiple signalling pathways, transcription factors and epigenetic regulators, including microRNAs (miRNAs). miRNAs and their targets form remarkably diverse regulatory networks, playing a key role in the execution of gene expression programmes in the different cell lineages of the hair follicle. This review summarizes the roles of miRNAs in the control of hair follicle development, cycling and hair pigmentation, emphasizes the remaining problems/unanswered questions, and provides future directions in this rapidly growing and exciting area of research.
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Affiliation(s)
- Thomas Andl
- Department of Medicine, Vanderbilt University, Nashville, TN, USA
| | - Natalia V Botchkareva
- Centre for Skin Sciences, Faculty of Life Sciences, University of Bradford, Bradford, UK
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48
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Miller KJ, Brown DA, Ibrahim MM, Ramchal TD, Levinson H. MicroRNAs in skin tissue engineering. Adv Drug Deliv Rev 2015; 88:16-36. [PMID: 25953499 DOI: 10.1016/j.addr.2015.04.018] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Revised: 04/04/2015] [Accepted: 04/25/2015] [Indexed: 01/08/2023]
Abstract
35.2 million annual cases in the U.S. require clinical intervention for major skin loss. To meet this demand, the field of skin tissue engineering has grown rapidly over the past 40 years. Traditionally, skin tissue engineering relies on the "cell-scaffold-signal" approach, whereby isolated cells are formulated into a three-dimensional substrate matrix, or scaffold, and exposed to the proper molecular, physical, and/or electrical signals to encourage growth and differentiation. However, clinically available bioengineered skin equivalents (BSEs) suffer from a number of drawbacks, including time required to generate autologous BSEs, poor allogeneic BSE survival, and physical limitations such as mass transfer issues. Additionally, different types of skin wounds require different BSE designs. MicroRNA has recently emerged as a new and exciting field of RNA interference that can overcome the barriers of BSE design. MicroRNA can regulate cellular behavior, change the bioactive milieu of the skin, and be delivered to skin tissue in a number of ways. While it is still in its infancy, the use of microRNAs in skin tissue engineering offers the opportunity to both enhance and expand a field for which there is still a vast unmet clinical need. Here we give a review of skin tissue engineering, focusing on the important cellular processes, bioactive mediators, and scaffolds. We further discuss potential microRNA targets for each individual component, and we conclude with possible future applications.
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49
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Ohana R, Weiman-Kelman B, Raviv S, Tamm ER, Pasmanik-Chor M, Rinon A, Netanely D, Shamir R, Solomon AS, Ashery-Padan R. MicroRNAs are essential for differentiation of the retinal pigmented epithelium and maturation of adjacent photoreceptors. Development 2015; 142:2487-98. [PMID: 26062936 DOI: 10.1242/dev.121533] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 06/03/2015] [Indexed: 12/21/2022]
Abstract
Dysfunction of the retinal pigmented epithelium (RPE) results in degeneration of photoreceptors and vision loss and is correlated with common blinding disorders in humans. Although many protein-coding genes are known to be expressed in RPE and are important for its development and maintenance, virtually nothing is known about the in vivo roles of non-coding transcripts. The expression patterns of microRNAs (miRNAs) have been analyzed in a variety of ocular tissues, and a few were implicated to play role in RPE based on studies in cell lines. Here, through RPE-specific conditional mutagenesis of Dicer1 or Dgcr8 in mice, the importance of miRNAs for RPE differentiation was uncovered. miRNAs were found to be dispensable for maintaining RPE fate and survival, and yet they are essential for the acquisition of important RPE properties such as the expression of genes involved in the visual cycle pathway, pigmentation and cell adhesion. Importantly, miRNAs of the RPE are required for maturation of adjacent photoreceptors, specifically for the morphogenesis of the outer segments. The alterations in the miRNA and mRNA profiles in the Dicer1-deficient RPE point to a key role of miR-204 in regulation of the RPE differentiation program in vivo and uncover the importance of additional novel RPE miRNAs. This study reveals the combined regulatory activity of miRNAs that is required for RPE differentiation and for the development of the adjacent neuroretina.
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Affiliation(s)
- Reut Ohana
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
| | - Benjamin Weiman-Kelman
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
| | - Shaul Raviv
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ernst R Tamm
- Institute of Human Anatomy and Embryology, University of Regensburg, D-93053 Regensburg, Germany
| | - Metsada Pasmanik-Chor
- Bioinformatics Unit, Faculty of Life Sciences, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ariel Rinon
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
| | - Dvir Netanely
- Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Ron Shamir
- Blavatnik School of Computer Science, Tel Aviv University, Tel Aviv 69978, Israel
| | - Arie S Solomon
- The Goldschleger Eye Research Institute, Sackler Faculty of Medicine, Tel Aviv University Sheba Medical Center, Tel Hashomer 52621, Israel
| | - Ruth Ashery-Padan
- Department of Human Molecular Genetics and Biochemistry, Sackler Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel
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50
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Kurzynska-Kokorniak A, Koralewska N, Pokornowska M, Urbanowicz A, Tworak A, Mickiewicz A, Figlerowicz M. The many faces of Dicer: the complexity of the mechanisms regulating Dicer gene expression and enzyme activities. Nucleic Acids Res 2015; 43:4365-80. [PMID: 25883138 PMCID: PMC4482082 DOI: 10.1093/nar/gkv328] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 03/31/2015] [Indexed: 12/14/2022] Open
Abstract
There is increasing evidence indicating that the production of small regulatory RNAs is not the only process in which ribonuclease Dicer can participate. For example, it has been demonstrated that this enzyme is also involved in chromatin structure remodelling, inflammation and apoptotic DNA degradation. Moreover, it has become increasingly clear that cellular transcript and protein levels of Dicer must be strictly controlled because even small changes in their accumulation can initiate various pathological processes, including carcinogenesis. Accordingly, in recent years, a number of studies have been performed to identify the factors regulating Dicer gene expression and protein activity. As a result, a large amount of complex and often contradictory data has been generated. None of these data have been subjected to an exhaustive review or critical discussion. This review attempts to fill this gap by summarizing the current knowledge of factors that regulate Dicer gene transcription, primary transcript processing, mRNA translation and enzyme activity. Because of the high complexity of this topic, this review mainly concentrates on human Dicer. This review also focuses on an additional regulatory layer of Dicer activity involving the interactions of protein and RNA factors with Dicer substrates.
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Affiliation(s)
| | - Natalia Koralewska
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Maria Pokornowska
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Anna Urbanowicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Aleksander Tworak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Agnieszka Mickiewicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland
| | - Marek Figlerowicz
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan 61-704, Poland Institute of Computing Science, Poznan University of Technology, Poznan 60-965, Poland
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