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Liu J, Jiang X, Liu K, Deng J, Qiu Y, Wei W, Yang C. Role of LINC00240 on T-helper 9 differentiation in allergic rhinitis through influencing DNMT1-dependent methylation of PU.1. Immunol Res 2024; 72:197-211. [PMID: 37966708 DOI: 10.1007/s12026-023-09435-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/06/2023] [Indexed: 11/16/2023]
Abstract
BACKGROUND Allergic rhinitis (AR) is a common allergic disease with increasing prevalence globally. However, the molecular mechanism underlying AR pathogenesis remains largely undefined. METHODS Peripheral blood and nasal mucosa samples obtained from patients with AR (n = 22), and ovalbumin-induced AR mouse model (n = 8 per group) were prepared for subsequent detection. qRT-PCR and western blot were used to detect the expression of LINC00240, miR-155-5p, PU.1 and other key molecules. ELISA assay and flow cytometry were employed to evaluate the secretion of IL-9 and T-helper 9 (Th9) cell ratio, respectively. Bioinformatics analysis, RNA immunoprecipitation (RIP), chromatin immunoprecipitation (ChIP) and luciferase reporter assays were employed to further elucidate the regulatory network of LINC00240/miR-155-5p/DNMT1. The methylation of PU.1 promoter was assessed by methylation-specific PCR (MSP). This signaling axis was further validated in the mouse model of AR. RESULTS LINC00240 was downregulated, while miR-155-5p and PU.1 were upregulated in the peripheral blood and nasal mucosa of AR patients, as well as in AR mice. This was accompanied with the increased ratio of Th9 cells and elevated IL-9 secretion. Mechanistically, LINC00240 served as a miR-155-5p sponge, and DNMT1 was a target of miR-155-5p. In addition, DNMT1 mediated the methylation of PU.1 promoter. In vivo studies verified that LINC00240 mitigated AR progression, possibly via miR-155-5p/DNMT1/PU.1-dependent Th9 differentiation. CONCLUSION The involvement of LINC00240 in AR pathogenesis is closely associated with Th9 differentiation through modulating DNMT1-dependent methylation of PU.1 by sponging miR-155-5p.
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Affiliation(s)
- JianGuo Liu
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China
| | - XunShuo Jiang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China
| | - Ke Liu
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China
| | - JianJian Deng
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China
| | - Yi Qiu
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China
| | - Wan Wei
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China
| | - ChunPing Yang
- Department of Otorhinolaryngology Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 1, Minde Road, Nanchang, 330006, Jiangxi Province, P.R. China.
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Zhang N, Wang B, Ma C, Zeng J, Wang T, Han L, Yang M. LINC00240 in the 6p22.1 risk locus promotes gastric cancer progression through USP10-mediated DDX21 stabilization. J Exp Clin Cancer Res 2023; 42:89. [PMID: 37072811 PMCID: PMC10111703 DOI: 10.1186/s13046-023-02654-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Accepted: 03/25/2023] [Indexed: 04/20/2023] Open
Abstract
BACKGROUND Gastric cancer remains the leading cause of cancer death in the world. It is increasingly evident that long non-coding RNAs (lncRNAs) transcribed from the genome-wide association studies (GWAS)-identified gastric cancer risk loci act as a key mode of cancer development and disease progression. However, the biological significance of lncRNAs at most cancer risk loci remain poorly understood. METHODS The biological functions of LINC00240 in gastric cancer were investigated through a series of biochemical assays. Clinical implications of LINC00240 were examined in tissues from gastric cancer patients. RESULTS In the present study, we identified LINC00240, which is transcribed from the 6p22.1 gastric cancer risk locus, functioning as a novel oncogene. LINC00240 exhibits the noticeably higher expression in gastric cancer specimens compared with normal tissues and its high expression levels are associated with worse survival of patients. Consistently, LINC00240 promotes malignant proliferation, migration and metastasis of gastric cancer cells in vitro and in vivo. Importantly, LINC00240 could interact and stabilize oncoprotein DDX21 via eliminating its ubiquitination by its novel deubiquitinating enzyme USP10, which, thereby, promote gastric cancer progression. CONCLUSIONS Taken together, our data uncovered a new paradigm on how lncRNAs control protein deubiquitylation via intensifying interactions between the target protein and its deubiquitinase. These findings highlight the potentials of lncRNAs as innovative therapeutic targets and thus lay the ground work for clinical translation.
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Affiliation(s)
- Nasha Zhang
- Department of Radiation Oncology, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, 211166, Jiangsu Province, China
| | - Bowen Wang
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
| | - Chi Ma
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
- Department of Thyroid Surgery, Affiliated Yantai Yuhuangding Hospital of Qingdao University, Shandong Province, Yantai, 264000, China
| | - Jiajia Zeng
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
| | - Teng Wang
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
| | - Linyu Han
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China
| | - Ming Yang
- Shandong Provincial Key Laboratory of Radiation Oncology, Cancer Research Center, Shandong Cancer Hospital and Institute, Shandong First Medical University and Shandong Academy of Medical Sciences, Shandong Province, Jinan, 250117, China.
- Jiangsu Key Lab of Cancer Biomarkers, Prevention and Treatment, Collaborative Innovation Center for Cancer Personalized Medicine, Nanjing Medical University, Nanjing, 211166, Jiangsu Province, China.
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Chen X, Wu G, Qing J, Li C, Chen X, Shen J. LINC00240 knockdown inhibits nasopharyngeal carcinoma progress by targeting miR-26a-5p. J Clin Lab Anal 2022; 36:e24424. [PMID: 35421264 PMCID: PMC9102631 DOI: 10.1002/jcla.24424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/07/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022] Open
Abstract
Objective This study intended to explore the regulatory functions of LINC00240 on nasopharyngeal carcinoma (NPC). Methods MiR‐26a‐5p inhibitor, mimic, and siLINC00240 were transfected into NPC cells. QRT‐PCR was employed to assess miR‐26a‐5p and LINC00240 expressions. The targeting relationship of LINC00240 and miR‐26a‐5p was analyzed through dual luciferase reporter and RNA immunoprecipitation assay. Cell counting kit‐8 assay, colony formation assay, flow cytometry assay, wound healing assay, Transwell assay and in vitro angiogenesis assay were adopted for the evaluation of the effects of LINC00240 or miR‐26a‐5p and LINC00240 on NPC cells regarding cell proliferation, apoptosis and cycle, migration, invasion, and angiogenesis. EZH2, cell cycle, and epithelial‐mesenchymal transition (EMT)‐related protein expression was tested through Western blot. Results LINC00240 had a high expression in NPC tissues and cell lines. Silenced LINC00240 significantly suppressed the 5‐8F and HK1 cell proliferation, invasion, migration, and angiogenesis, but raised cell apoptosis, and cells were blocked in G0/G1 phase. MiR‐26a‐5p was a target of LINC00240. MiR‐26a‐5p upregulation suppressed the NPC cell proliferation, migration, invasion, angiogenesis, N‐cadherin and EZH2 expression, while it elevated apoptosis and p21, p27 and E‐cadherin expressions, whereas miR‐26a‐5p downregulation performed conversely. LINC00240 knockdown partially offset the effects of miR‐26a‐5p downregulation on cell proliferation, migration, invasion, angiogenesis, apoptosis, and EZH2. Conclusion LINC00240 knockdown restrained cell proliferation, invasion, migration, and angiogenesis, while it advanced apoptosis via miR‐26a‐5p in NPC by EZH2 inhibition.
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Affiliation(s)
- Xing Chen
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Guixiang Wu
- Department of Respiratory Medicine, Ningbo Ximen Wangchun Community Health Service Center, Ningbo City, China
| | - Jing Qing
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Chunlin Li
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Xudong Chen
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Jian Shen
- Department of Anesthesiology, Jiangsu Province Hospital, Nanjing, China
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Abstract
Gastric cancer (GC) is a common cancer with high incidence. Understanding the epidemiology and physiopathology of GC is crucial for formulating novel therapeutic strategies. Recent studies have implicated long non-coding RNA LINC00240, miR-338-5p and methyltransferase-like 3 (METTL3) in the progression of GC. In this study, we investigated the functional role of LINC00240/miR-338-5p/METTL3 axis in regulating the aggressiveness of GC cells. We first demonstrated that LINC00240 was upregulated in GC tissues and GC cell lines. High expression of LINC00240 was associated with advanced TNM stage, a higher extent of distant metastasis and lymph nodes metastasis, and the poor overall and disease-free survival of the patients. In GC cell lines, the knockdown of LINC00240 inhibited GC cell proliferation and migration, but induced cell apoptosis. We further identified and validated the functional interaction between LINC00240 and miR-338-5p. miR-338-5p seemed to function as a downstream target negatively regulated by LINC00240, and miR-338-5p could target METTL3 at 3ʹ UTR to downregulate its expression. In GC tissues, the expression of miR-338-5p was negatively correlated with LINC00240, and the expression of miR-338-5p was negatively correlated with METTL3. Importantly, miR-338-5p inhibitor or METTL3 overexpression could rescue the inhibitory effect of LINC00240 knockdown on cell proliferation and migration, and inhibit the apoptosis induction in GC cells. Taken together, our data imply that the upregulation of LINC00240 in GC cells promotes the malignant phenotype by modulating miR-338-5p/METTL3 axis, which could serve as potential therapeutic targets for GC treatment.
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Affiliation(s)
- Guoping Wang
- Department of Endoscopy Center, First People's Hospital of Wenling, Wenling, Zhejiang, China
| | - Zhongchen Zhang
- Department of Endoscopy Center, First People's Hospital of Wenling, Wenling, Zhejiang, China
| | - Chenmei Xia
- Department of Endoscopy Center, First People's Hospital of Wenling, Wenling, Zhejiang, China
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Ku GW, Kang Y, Yu SL, Park J, Park S, Jeong IB, Kang MW, Son JW, Kang J. LncRNA LINC00240 suppresses invasion and migration in non-small cell lung cancer by sponging miR-7-5p. BMC Cancer 2021; 21:44. [PMID: 33422052 PMCID: PMC7796488 DOI: 10.1186/s12885-020-07755-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 12/21/2020] [Indexed: 02/07/2023] Open
Abstract
Background lncRNAs have important roles in regulating cancer biology. Accumulating evidence has established a link between the dysregulation of lncRNAs and microRNA in cancer progression. In previous studies, miR-7-5p has been found to be significantly down-regulated in mesenchymal-like lung cancer cell lines and directly regulated EGFR. In this work, we investigated the lncRNA partner of miR-7-5p in the progression of lung cancer. Methods We investigated the expression of miR-7-5p and the lncRNA after transfection with an miR-7-5p mimics using a microarray. The microarray results were validated using quantitative real time-polymerase Chain Reaction (qRT-PCR). The regulatory effects of lncRNA on miR-7-5p and its target were evaluated by changes in the expression of miR-7-5p after transfection with siRNAs for lncRNA and the synthesis of full-length lncRNA. The effect of miR-7-5p on lncRNA and the miRNA target was evaluated after transfection with miRNA mimic and inhibitor. The role of lncRNA in cancer progression was determined using invasion and migration assays. The level of lncRNA and EGFR in lung cancer and normal lung tissue was analyzed using TCGA data. Results We found that LINC00240 was downregulated in lung cancer cell line after miR-7-5p transfection with an miR-7-5p mimic. Further investigations revealed that the knockdown of LINC00240 induced the overexpression of miR-7-5p. The overexpression of miR-7-5p diminished cancer invasion and migration. The EGFR expression was down regulated after siRNA treatment for LINC00240. Silencing LINC00240 suppressed the invasion and migration of lung cancer cells, whereas LINC00240 overexpression exerted the opposite effect. The lower expression of LINC00240 in squamous lung cancer was analyzed using TCGA data. Conclusions Taken together, LINC00240 acted as a sponge for miR-7-5p and induced the overexpression of EGFR. LINC00240 may represent a potential target for the treatment of lung cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-020-07755-8.
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Affiliation(s)
- Gwan Woo Ku
- Department of Thoracic Surgery, Konyang University Hospital, Daejeon, 35365, Republic of Korea
| | - Yujin Kang
- Priority Research Center, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, 35365, Republic of Korea
| | - Seong-Lan Yu
- Priority Research Center, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, 35365, Republic of Korea
| | - Joonghoon Park
- Graduate School of International Agricultural Technology and Institute of GreenBio Science and Technology, Seoul National University, Pyeongchang, 25354, Republic of Korea
| | - Sejin Park
- Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea
| | - In Beom Jeong
- Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea
| | - Min Woong Kang
- Department of Thoracic and Cardiovascular Surgery, School of Medicine, Chungnam National University, Daejeon, 35015, Republic of Korea
| | - Ji Woong Son
- Department of Internal Medicine, Konyang University Hospital, Daejeon, Republic of Korea.
| | - Jaeku Kang
- Priority Research Center, Myunggok Medical Research Institute, College of Medicine, Konyang University, Daejeon, 35365, Republic of Korea. .,Department of Pharmacology, College of Medicine, Konyang University, Daejeon, 35365, Republic of Korea.
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Li Y, Yan J, Wang Y, Wang C, Zhang C, Li G. LINC00240 promotes gastric cancer cell proliferation, migration and EMT via the miR-124-3p / DNMT3B axis. Cell Biochem Funct 2020; 38:1079-1088. [PMID: 32526811 DOI: 10.1002/cbf.3551] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 04/02/2020] [Accepted: 05/03/2020] [Indexed: 01/17/2023]
Abstract
Gastric cancer (GC) remains one of prevalent causes of cancer-related deaths worldwide. Long noncoding RNA is related to various cancers. Our study was conducted to explore the biological effects of LINC00240 on the tumorigenesis of GC and uncover its possible mechanisms. LINC00240 expression was determined in GC cell lines and samples through quantitative Real-time Polymerase Chain Reaction (qRT-PCR). The functional effects of LINC00240 were validated using in vitro and in vivo assays. Targets were assessed by AGO2-dependent RNA immunoprecipitation assay and dual-luciferase report assays. Our findings suggested higher LINC00240 expression in GC tissues and cells. Through downregulating LINC00240, cell proliferation, invasion and migration were retarded in vitro, and tumorigenesis of GC cells was notably suppressed in vivo. Further research showed that LINC00240 was a cytoplasmic lncRNA that shared miRNA response elements of microRNA (miR)-124-3p with DNMT3B, thus forming a LINC00240/miR-124-3p/DNMT3B axis explaining the functions of LINC00240. In a word, our study reveals that LINC00240 promotes GC tumorigenesis via a LINC00240/miR-124-3p/DNMT3B axis as an oncogene. These findings objectivise that LINC00240 may be a potential diagnostic biomarker for GC. SIGNIFICANCE OF THE STUDY: Gastric cancer (GC) is the fifth most common cancer and the third leading cause of cancer-related death across the world. Then we analysed lncRNA microarray of GC and selected LINC00240 as the study object. Therefore, the potential molecular mechanism as well as physiological function of LINC00240 in GC was discussed. Then we reveal that LINC00240 acts as an oncogene in GC progression via the miR-99a-5p/IGF1R axis. This study is the first to demonstrate the roles of LINC00240 in GC.
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Affiliation(s)
- Yuanyuan Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Jing Yan
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yiting Wang
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Caifeng Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Cheng Zhang
- Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Guohua Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Zhang Y, Li X, Zhang J, Liang H. Natural killer T cell cytotoxic activity in cervical cancer is facilitated by the LINC00240/microRNA-124-3p/STAT3/MICA axis. Cancer Lett 2020; 474:63-73. [PMID: 31904481 DOI: 10.1016/j.canlet.2019.12.038] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 10/25/2022]
Abstract
Long noncoding RNAs play significant roles in diverse cancers. In this study, we found that LINC00240 expression was markedly increased in cervical cancer. Functional in vitro assays in cervical cancer cells showed that LINC00240 enhanced the growth, migration, and invasion of cervical cancer cells. The target of LINC00240 was confirmed as microRNA(miR)-124-3p. Inhibition of miR-124-3p significantly enhanced cervical cancer progression via targeting of STAT3, which is greatly activated in tumor-infiltrating immune cells. LINC00240 expression was able to induce STAT3 expression via sponging of miR-124-3p, and showed a positive association with STAT3 expression in cervical cancer tissues. MHC class I-related chain (MIC)-A plays a key role in activating natural killer T (NKT) cells and serves as a downstream target of STAT3. Here, MICA was inhibited by up-regulation of LINC00240, and could be rescued by STAT3 knockdown. In addition, LINC00240 overexpression suppressed the cytotoxic activity of NKT cells by affecting the STAT3/MICA axis. Subsequently, we found that LINC00240 expression promoted cervical cancer progression via induction of miR-124-3p/STAT3/MICA-mediated NKT cell tolerance. Considering these findings, we conclude that LINC00240 might be a novel target for cervical cancer.
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Affiliation(s)
- Yan Zhang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Xing Li
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jun Zhang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hua Liang
- Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, China.
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