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Fu Q, Li Y, Shi C. HSPB1 as an RNA-binding protein mediates the pathological process of osteoarthritis. J Orthop Surg Res 2024; 19:156. [PMID: 38429742 PMCID: PMC10908047 DOI: 10.1186/s13018-024-04580-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 01/25/2024] [Indexed: 03/03/2024] Open
Abstract
Heat-shock protein beta1 (HSPB1) is a member of the small HSP family, downregulated in osteoarthritis (OA) chondrocytes and demonstrated the capacity to serve as an RNA-binding protein (RBP). This work aimed to explore the profile of HSPB1 bound RNA and reveal the potential regulation mechanism of HSPB1 in OA. In this work, we captured an unbiased HSPB1-RNA interaction map in Hela cells using the iRIP-seq. The results demonstrated that HSPB1 interacted with plentiful of mRNAs and genomic location toward the CDS region. Functional enrichment of HSPB1-related peaks showed the involvement in gene expression, translation initiation, cellular protein metabolic process, and nonsense-mediated decay. HOMER software analysis showed that HSPB1 bound peaks were over-represented in GAGGAG sequences. In addition, ABLIRC and CIMS algorithm indicated that HSPB1 bound to AU-rich motifs and the proportion of AU-rich peaks in 3' UTR were slightly higher than that in other regions. Moreover, HSPB1-binding targets analysis revealed several gens were associated with OA including EGFR, PLEC, COL5A1, and ROR2. The association of OA-related mRNAs to HSPB1 was additionally confirmed in OA tissues by the quantitative RIP-PCR experiments. Further experiment demonstrated the downregulation of HSPB1 in OA tissues. In conclusion, our current study confirmed HSPB1 as an RNA-binding protein and revealed its potential function in the pathological process of OA, providing a reliable insight to further investigate the molecular regulation mechanism of HSPB1 in OA.
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Affiliation(s)
- Qiang Fu
- Department of Rheumatology and Immunology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, 330006, Jiangxi, China
| | - Yi Li
- Department of Rheumatology and Immunology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, 330006, Jiangxi, China
| | - Chunhua Shi
- Department of Rheumatology and Immunology, Jiangxi Provincial People's Hospital, The First Affiliated Hospital of Nanchang Medical College, Nanchang, 330006, Jiangxi, China.
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Yan Y, Guo H, Li W. Endoribonuclease DNE1 Promotes Ethylene Response by Modulating EBF1/2 mRNA Processing in Arabidopsis. Int J Mol Sci 2024; 25:2138. [PMID: 38396815 PMCID: PMC10888710 DOI: 10.3390/ijms25042138] [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: 01/05/2024] [Revised: 02/04/2024] [Accepted: 02/07/2024] [Indexed: 02/25/2024] Open
Abstract
The gaseous phytohormone ethylene plays a crucial role in plant growth, development, and stress responses. In the ethylene signal transduction cascade, the F-box proteins EIN3-BINDING F-BOX 1 (EBF1) and EBF2 are identified as key negative regulators governing ethylene sensitivity. The translation and processing of EBF1/2 mRNAs are tightly controlled, and their 3' untranslated regions (UTRs) are critical in these regulations. However, despite their significance, the exact mechanisms modulating the processing of EBF1/2 mRNAs remain poorly understood. In this work, we identified the gene DCP1-ASSOCIATED NYN ENDORIBONUCLEASE 1 (DNE1), which encodes an endoribonuclease and is induced by ethylene treatment, as a positive regulator of ethylene response. The loss of function mutant dne1-2 showed mild ethylene insensitivity, highlighting the importance of DNE1 in ethylene signaling. We also found that DNE1 colocalizes with ETHYLENE INSENSITIVE 2 (EIN2), the core factor manipulating the translation of EBF1/2, and targets the P-body in response to ethylene. Further analysis revealed that DNE1 negatively regulates the abundance of EBF1/2 mRNAs by recognizing and cleaving their 3'UTRs, and it also represses their translation. Moreover, the dne1 mutant displays hypersensitivity to 1,4-dithiothreitol (DTT)-induced ER stress and oxidative stress, indicating the function of DNE1 in stress responses. This study sheds light on the essential role of DNE1 as a modulator of ethylene signaling through regulation of EBF1/2 mRNA processing. Our findings contribute to the understanding of the intricate regulatory process of ethylene signaling and provide insights into the significance of ribonuclease in stress responses.
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Affiliation(s)
- Yan Yan
- Harbin Institute of Technology, Harbin 150001, China;
- Department of Biology, School of Life Sciences, Institute of Plant and Food Science, Southern University of Science and Technology, Shenzhen 518055, China
- Key Laboratory of Molecular Design for Plant Cell Factory, Guangdong Higher Education Institute, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hongwei Guo
- Department of Biology, School of Life Sciences, Institute of Plant and Food Science, Southern University of Science and Technology, Shenzhen 518055, China
- Key Laboratory of Molecular Design for Plant Cell Factory, Guangdong Higher Education Institute, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenyang Li
- Department of Biology, School of Life Sciences, Institute of Plant and Food Science, Southern University of Science and Technology, Shenzhen 518055, China
- Key Laboratory of Molecular Design for Plant Cell Factory, Guangdong Higher Education Institute, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China
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Eckardt NA, Axtell MJ, Barta A, Chen X, Gregory BD, Guo H, Manavella PA, Mosher RA, Meyers BC. Focus on RNA biology. THE PLANT CELL 2023; 35:1617-1618. [PMID: 36943779 DOI: 10.1093/plcell/koad082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 03/13/2023] [Accepted: 03/13/2023] [Indexed: 05/30/2023]
Affiliation(s)
- Nancy A Eckardt
- Senior Features Editor, The Plant Cell, American Society of Plant Biologists, USA
| | - Michael J Axtell
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Biology, The Pennsylvania State University, University Park, PA 16802, USA
| | - Andrea Barta
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Max Perutz Labs, Medical University of Vienna, Vienna Biocenter Campus, 1030 Vienna, Austria
| | - Xuemei Chen
- Senior Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Botany and Plant Sciences and Center for Plant Cell Biology, Institute of Integrative Genome Biology, University of California-Riverside, Riverside, CA 92521, USA
| | - Brian D Gregory
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Biology, University of Pennsylvania, School of Arts and Sciences, Philadelphia, PA 19104, USA
| | - Hongwei Guo
- Reviewing Editor, The Plant Cell, American Society of Plant Biologists, USA
- Department of Biology, Institute of Plant and Food Science, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
| | - Pablo A Manavella
- Guest Editor, The Plant Cell, American Society of Plant Biologists, USA
- Instituto de Agrobiotecnología del Litoral (CONICET-UNL), Cátedra de Biología Celular y Molecular, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral, Santa Fe 3000, Argentina
| | - Rebecca A Mosher
- Guest Editor, The Plant Cell, American Society of Plant Biologists, USA
- The School of Plant Sciences, The University of Arizona, Tucson, AZ 85721, USA
| | - Blake C Meyers
- Editor-in-Chief, The Plant Cell, American Society of Plant Biologists, USA
- Donald Danforth Plant Science Center, St. Louis, MO 63132, USA
- Division of Plant Sciences and Technology, University of Missouri-Columbia, Columbia, MO 65211, USA
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