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Jimenez MT, Clark ML, Wright JM, Michieletto MF, Liu S, Erickson I, Dohnalova L, Uhr GT, Tello-Cajiao J, Joannas L, Williams A, Gagliani N, Bewtra M, Tomov VT, Thaiss CA, Henao-Mejia J. The miR-181 family regulates colonic inflammation through its activity in the intestinal epithelium. J Exp Med 2022; 219:213450. [PMID: 36074090 PMCID: PMC9462864 DOI: 10.1084/jem.20212278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 06/02/2022] [Accepted: 08/11/2022] [Indexed: 11/04/2022] Open
Abstract
The intestinal epithelium is a key physical interface that integrates dietary and microbial signals to regulate nutrient uptake and mucosal immune cell function. The transcriptional programs that regulate intestinal epithelial cell (IEC) quiescence, proliferation, and differentiation have been well characterized. However, how gene expression networks critical for IECs are posttranscriptionally regulated during homeostasis or inflammatory disease remains poorly understood. Herein, we show that a conserved family of microRNAs, miR-181, is significantly downregulated in IECs from patients with inflammatory bowel disease and mice with chemical-induced colitis. Strikingly, we showed that miR-181 expression within IECs, but not the hematopoietic system, is required for protection against severe colonic inflammation in response to epithelial injury in mice. Mechanistically, we showed that miR-181 expression increases the proliferative capacity of IECs, likely through the regulation of Wnt signaling, independently of the gut microbiota composition. As epithelial reconstitution is crucial to restore intestinal homeostasis after injury, the miR-181 family represents a potential therapeutic target against severe intestinal inflammation.
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Affiliation(s)
- Monica T Jimenez
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Megan L Clark
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Jasmine M Wright
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Michaël F Michieletto
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Suying Liu
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Isabel Erickson
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Lenka Dohnalova
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Giulia T Uhr
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - John Tello-Cajiao
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Leonel Joannas
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Adam Williams
- Division of Allergy and Immunology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL
| | - Nicola Gagliani
- Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Immunology and Allergy Unit, Department of Medicine, Solna, Karolinska Institute and University Hospital, Stockholm, Sweden
| | - Meenakshi Bewtra
- Department of Medicine, Division of Gastroenterology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA.,Center for Clinical Epidemiology and Biostatistics, University of Pennsylvania, Philadelphia, PA.,Department of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA
| | - Vesselin T Tomov
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Department of Medicine, Division of Gastroenterology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Christoph A Thaiss
- Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
| | - Jorge Henao-Mejia
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Institute for Immunology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA.,Division of Protective Immunity, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA
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Wang Z, Hao J, Chen D. Long Noncoding RNA Nuclear Enriched Abundant Transcript 1 (NEAT1) Regulates Proliferation, Apoptosis, and Inflammation of Chondrocytes via the miR-181a/Glycerol-3-Phosphate Dehydrogenase 1-Like (GPD1L) Axis. Med Sci Monit 2019; 25:8084-8094. [PMID: 31658244 PMCID: PMC6836642 DOI: 10.12659/msm.918416] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Background Osteoarthritis (OA) is one of the most common chronic musculoskeletal diseases, yet to date it lacks effective therapeutic strategies. Increasing evidence suggests that long noncoding RNAs (lncRNAs) serve pivotal roles in the occurrence and development of OA. However, the possible molecular mechanism involving lncRNAs, such as nuclear enriched abundant transcript 1 (NEAT1), in OA progression is still unclear. Material/Methods First, NEAT1 and miR-181a expression in OA synovium tissues and normal synovium tissues were detected. Then, the effect of NEAT1 on modulating growth ability, apoptosis, and inflammation in OA chondrocytes was investigated by a series of loss-function experiments. Next, the correlation between NEAT1, miR-181a, and glycerol-3-phosphate dehydrogenase 1-like (GPD1L) was fully investigated. Finally, the downregulation of miR-181a was employed as a recovery experiment to explore the functional mechanism of NEAT1 in OA. Results In the present study, we found that NEAT1 expression was downregulated in OA tissues, while miR-181a expression was prominently upregulated. Moreover, reduced expression of NEAT1 suppressed cell growth while elevating the apoptotic rate and increasing the abundance of inflammatory cytokines released in OA chondrocytes. Furthermore, we clarified that miR-181a was a direct sponge of NEAT1, and GPD1L was able to bind to miR-181a. Additionally, we found that downregulation of miR-181a was able to attenuate the effect of NEAT1 on apoptosis, inflammatory response, and proliferation in OA chondrocytes. Conclusions Our findings indicate that downregulation of NEAT1 aggravated progression of OA via modulating the miR-181a/GPD1L axis, providing a novel insight into the mechanism of OA pathogenesis.
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Affiliation(s)
- Zengliang Wang
- No. 1 Wards Medicine, Department of Sports Medicine and Arthroscopy Surgery, Tianjin Hospital, Tianjin, China (mainland)
| | - Jianxue Hao
- Department of Orthopedics, The First Hospital of Baoding, Baoding, Hebei, China (mainland)
| | - Desheng Chen
- No. 1 Wards Medicine, Department of Sports Medicine and Arthroscopy Surgery, Tianjin Hospital, Tianjin, China (mainland)
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