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Yin W, Jiang Z, Guo Y, Cao Y, Wu Z, Zhou Y, Chen Q, Liu W, Jiang X, Ren C. Identification of Anoikis-Related Genes in Spinal Cord Injury: Bioinformatics and Experimental Validation. Mol Neurobiol 2024:10.1007/s12035-024-04121-8. [PMID: 38519735 DOI: 10.1007/s12035-024-04121-8] [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: 01/26/2023] [Accepted: 03/12/2024] [Indexed: 03/25/2024]
Abstract
Spinal cord injury (SCI) is a serious disease without effective therapeutic strategies. To identify the potential treatments for SCI, it is extremely important to explore the underlying mechanism. Current studies demonstrate that anoikis might play an important role in SCI. In this study, we aimed to identify the key anoikis-related genes (ARGs) providing therapeutic targets for SCI. The mRNA expression matrix of GSE45006 was downloaded from the Gene Expression Omnibus (GEO) database, and the ARGs were downloaded from the Molecular Signatures Database (MSigDB database). Then, the potential differentially expressed ARGs were identified. Next, correlation analysis, gene ontology (GO) enrichment analysis and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis, and protein-protein interaction (PPI) analysis were employed for the differentially expressed ARGs. Moreover, miRNA-gene networks were constructed by the hub ARGs. Finally, RNA expression of the top ten hub ARGs was validated in the SCI cell model and rat SCI model. A total of 27 common differentially expressed ARGs were identified at different time points (1, 3, 7, and 14 days) following SCI. The GO and KEGG enrichment analysis of these ARGs indicated several enriched terms related to proliferation, cell cycle, and apoptotic process. The PPI results revealed that most of the ARGs interacted with each other. Ten hub ARGs were further screened, and all the 10 genes were validated in the SCI cell model. In the rat model, only seven genes were validated eventually. We identified 27 differentially expressed ARGs of the SCI through bioinformatic analysis. Seven real hub ARGs (CCND1, FN1, IGF1, MYC, STAT3, TGFB1, and TP53) were identified eventually. These results may expand our understanding of SCI and contribute to the exploration of potential SCI targets.
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Affiliation(s)
- Wen Yin
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Zhipeng Jiang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Youwei Guo
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Yudong Cao
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Zhaoping Wu
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Yi Zhou
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Quan Chen
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China
| | - Weidong Liu
- Cancer Research Institute, Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, School of Basic Medical Science, Central South University, Changsha, 410008, Hunan, China
| | - Xingjun Jiang
- Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, People's Republic of China.
| | - Caiping Ren
- Cancer Research Institute, Department of Neurosurgery, National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
- NHC Key Laboratory of Carcinogenesis and the Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, School of Basic Medical Science, Central South University, Changsha, 410008, Hunan, China.
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Hu Z, Xuan L, Wu T, Jiang N, Liu X, Chang J, Wang T, Han N, Tian X. Taxifolin attenuates neuroinflammation and microglial pyroptosis via the PI3K/Akt signaling pathway after spinal cord injury. Int Immunopharmacol 2023; 114:109616. [PMID: 36700780 DOI: 10.1016/j.intimp.2022.109616] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 12/14/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Spinal cord injury (SCI) is a severe injury characterized by neuroinflammation and oxidative stress. Taxifolin is exhibits anti-inflammatory and antioxidative activities in neurologic diseases. However, the roles and mechanisms of taxifolin in neuroinflammation and microglial pyroptosis after SCI remain unclear. The present study aims to investigate the effect of taxifolin on SCI and its potential underlying mechanisms in in vivo and in vitro models. In this study, taxifolin markedly reduced microglial activation mediated oxidative stress, and inhibited the expression of pyroptosis-related proteins (NLRP3, GSDMD, ASC, and Caspase-1) and inflammatory cytokines (IL-1β and IL-18) after SCI, as shown by immunofluorescence staining and western blot assays. In addition, taxifolin promoted axonal regeneration and improved functional recovery after SCI. In vitro studies showed that taxifolin attenuated the activation of microglia and oxidative stress after lipopolysaccharide (LPS) + adenosine-triphosphate (ATP) stimulation in BV2 cells. We also observed that taxifolin inhibited the pyroptosis-related proteins and reduced the release of inflammatory cytokines. Moreover, to explore how taxifolin exerts its effects on microglial pyroptosis and axonal regeneration of neurons, we performed an in vitro study in BV-2 cells and PC12 cells co-culture. The results revealed that taxifolin facilitated axonal regeneration of PC12 cells in co-culture with LPS + ATP-induced BV-2 cells. Mechanistically, taxifolin regulated microglial pyroptosis via the PI3K/AKT signaling pathway. Taken together, these results suggest that taxifolin alleviates neuroinflammation and microglial pyroptosis through the PI3K/AKT signaling pathway after SCI, and promotes axonal regeneration and improves functional recovery, suggesting that taxifolin may represent a potential therapeutic agent for SCI.
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Affiliation(s)
- Zhenxin Hu
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Lina Xuan
- Department of Neurosurgery, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
| | - Tingting Wu
- The First Clinical Medical Colloge, Wenzhou Medical University, Wenzhou 325035, China
| | - Nizhou Jiang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, China
| | - Xiangjun Liu
- Department of Oncology, The Second Affiliated Hospital of Dalian Medical University, Dalian 116027, China
| | - Jiazhen Chang
- Advanced Institute for Medical Sciences, Dalian Medical University, Dalian 116044, China
| | - Te Wang
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou 325088, China
| | - Nan Han
- Department of Ultrasonography, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
| | - Xiliang Tian
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, China.
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Tang Z, Yang C, He Z, Deng Z, Li X. Notoginsenoside R1 alleviates spinal cord injury through the miR-301a/KLF7 axis to activate Wnt/β-catenin pathway. Open Med (Wars) 2022; 17:741-755. [PMID: 35509687 PMCID: PMC9008318 DOI: 10.1515/med-2022-0461] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/12/2022] [Accepted: 02/22/2022] [Indexed: 01/10/2023] Open
Abstract
Spinal cord injury (SCI) is a devastating incident that induces neuronal loss and dysfunction. Notoginsenoside R1 (NGR1) has been reported to exhibit a neuroprotective role after SCI. In this study, the effect and molecular mechanisms of NGR1 in models of SCI were further investigated. Rat adrenal pheochromocytoma cell line (PC-12) were stimulated with lipopolysaccharide (LPS) to establish a cell model of SCI-like condition. The changes of proinflammatory cytokines and associated proteins were analyzed using enzyme linked immunosorbent assay (ELISA) and western blotting. A rat model of SCI was established. Nissl staining were used to observe the morphological characteristics of spinal cord tissues. reverse transcription-quantitative PCR (RT-qPCR) was used to measure the expression of miR-301a andKrüppel-like factor 7 (KLF7). Our results showed that NGR1 alleviated LPS-triggered apoptosis and inflammation in PC-12 cells. MiR-301a was upregulated in LPS-stimulated PC-12 cells and was downregulated by NGR1 treatment. MiR-301a overexpression reversed the effect of NGR1 in LPS-treated PC-12 cells. KLF7 was verified to be targeted by miR-301a. NGR1 activated Wnt/β-catenin signaling in LPS-treated PC-12 cells by inhibiting miR-301a and upregulating KLF7. Moreover, blocking wingless/integrated (Wnt)/β-catenin signaling eliminated the protective effect of NGR1 against SCI in vitro and in vivo. Overall, NGR1 could reduce inflammation and apoptosis and promote functional recovery of SCI rats by activating Wnt/β-catenin pathway.
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Affiliation(s)
- Zhi Tang
- Department of Neurosurgery, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University , Changsha 410013 , Hunan , China
| | - Chunhua Yang
- Department of Orthopaedics, The First Hospital of Changsha , Kaifu District , Changsha 410005 , Hunan , China
| | - Zhengwen He
- Department of Neurosurgery, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University , Changsha 410013 , Hunan , China
| | - Zhiyong Deng
- Department of Neurosurgery, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University , Changsha 410013 , Hunan , China
| | - Xiaoming Li
- Department of Orthopaedics, The First Hospital of Changsha , No. 311, Yingpan Road, Kaifu District , Changsha 410005 , Hunan , China
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Chen G, Li PH, He JY, Su YL, Chen HJ, Dong JD, Huang YH, Huang XH, Jiang YF, Qin QW, Sun HY. Molecular cloning, inducible expression with SGIV and Vibrio alginolyticus challenge, and function analysis of Epinephelus coioides PDCD4. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 119:104013. [PMID: 33465381 DOI: 10.1016/j.dci.2021.104013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Programmed cell death 4 (PDCD4) in mammals, a gene closely associated with apoptosis, is involved in many biological processes, such as cell aging, differentiation, regulation of cell cycle, and inflammatory response. In this study, grouper Epinephelus coioides PDCD4, EcPDCD4-1 and EcPDCD4-2, were obtained. The open reading frame (ORF) of EcPDCD4-1 is 1413 bp encoding 470 amino acids with a molecular mass of 52.39 kDa and a theoretical pI of 5.33. The ORF of EcPDCD4-2 is 1410 bp encoding 469 amino acids with a molecular mass of 52.29 kDa and a theoretical pI of 5.29. Both EcPDCD4-1 and EcPDCD4-2 proteins contain two conserved MA3 domains, and their mRNA were detected in all eight tissues of E. coioides by quantitative real-time PCR (qRT-PCR) with the highest expression in liver. The expressions of two EcPDCD4s were significantly up-regulated after Singapore grouper iridovirus (SGIV) or Vibrio alginolyticus infection. In addition, over-expression of EcPDCD4-1 or EcPDCD4-2 can inhibit the activity of the nuclear factor-κB (NF-κB) and activator protein-1 (AP-1), and regulate SGIV-induced apoptosis. The results demonstrated that EcPDCD4s might play important roles in E. coioides tissues during pathogen-caused inflammation.
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Affiliation(s)
- Guo Chen
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China; Hainan Key Laboratory of Tropical Marine Biotechnology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China; Department of Laboratory, Jining No.1 People's Hospital; Postdoctoral Mobile Station of Shandong University of Traditional Chinese Medicine, Shandong, 272111, PR China; Life Sciences Institute, Zhejiang University, Zhejiang Province, 310058, PR China
| | - Pin-Hong Li
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Jia-Yang He
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Yu-Ling Su
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - He-Jia Chen
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Jun-De Dong
- Hainan Key Laboratory of Tropical Marine Biotechnology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China
| | - You-Hua Huang
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Xiao-Hong Huang
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Yu-Feng Jiang
- Department of Laboratory, Jining No.1 People's Hospital; Postdoctoral Mobile Station of Shandong University of Traditional Chinese Medicine, Shandong, 272111, PR China.
| | - Qi-Wei Qin
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China.
| | - Hong-Yan Sun
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China.
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Zhou G, Duan Y, Lu C, Wang W. Knockdown of circ-UQCRC2 ameliorated lipopolysaccharide-induced injury in MRC-5 cells by the miR-326/PDCD4/NF-κB pathway. Int Immunopharmacol 2021; 97:107633. [PMID: 33895481 DOI: 10.1016/j.intimp.2021.107633] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/24/2021] [Accepted: 03/31/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND Circular RNAs (circRNAs) have been shown as important modulators in the pathogenesis of pediatric pneumonia. In this paper, we focused on the molecular basis of circRNA ubiquinol-cytochrome c reductase core protein 2 (circ-UQCRC2, circ_0038467) in lipopolysaccharide (LPS)-induced cell injury. METHODS Quantitative real-time polymerase chain reaction (qRT-PCR) was used to gauge the levels of circ-UQCRC2, microRNA (miR)-326 and programmed cell death 4 (PDCD4) mRNA. PDCD4 protein expression and the activation of the NF-κB signaling pathway were evaluated by western blot. Ribonuclease R (RNase R) assay was performed to assess the stability of circ-UQCRC2. Cell viability and apoptosis were detected by the Cell Counting Kit-8 (CCK-8) and flow cytometry assays, respectively. The levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and IL-6 were measured by the enzyme-linked immunosorbent assay (ELISA). Targeted relationship between miR-326 and circ-UQCRC2 or PDCD4 was confirmed by dual-luciferase reporter and RNA immunoprecipitation (RIP) assays. RESULTS Our data showed the up-regulation of circ-UQCRC2 level in pneumonia serum and LPS-treated MRC-5 cells. The silencing of circ-UQCRC2 attenuated LPS-induced MRC-5 cell injury. Mechanistically, circ-UQCRC2 directly targeted miR-326, and circ-UQCRC2 regulated PDCD4 expression through miR-326. MiR-326 was a downstream effector of circ-UQCRC2 function, and PDCD4 was a functional target of miR-326 in regulating LPS-induced MRC-5 cell injury. Additionally, circ-UQCRC2 knockdown inactivated the NF-κB signaling pathway by regulating the miR-326/PDCD4 axis. CONCLUSION Our findings demonstrated a novel regulatory network, the miR-326/PDCD4/NF-κB pathway, for the function of circ-UQCRC2 in LPS-induced cell injury in MRC-5 cells.
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Affiliation(s)
- Gang Zhou
- Department of Pediatrics, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China
| | - Yunyan Duan
- Department of Pediatrics, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China
| | - Chi Lu
- Department of Oncology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wenguang Wang
- Department of Pediatrics, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan, Hubei, China.
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Yan C, Lv H, Peng Z, Yang D, Shen P, Yu J, Tong C, Wang X. Analysis of miRNA expression changes in bovine endometrial stromal cells treated with lipopolysaccharide. Theriogenology 2021; 167:85-93. [PMID: 33784501 DOI: 10.1016/j.theriogenology.2021.03.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 03/12/2021] [Accepted: 03/16/2021] [Indexed: 12/20/2022]
Abstract
After parturition, bovine uterine stromal cells are often exposed to complex bacterial and viral stimuli owing to epithelial cell rupture, resulting in an inflammatory response. In this study, we used an in vitro model to study the response of bovine endometrial stromal cells to inflammatory mediators and the associated regulated microRNAs in response to lipopolysaccharide. Lipopolysaccharide (LPS) is a bacterial wall component in gram-negative bacteria that causes inflammation upon immune recognition, which is used to create in vitro inflammation models. Thus, we used high-throughput RNA sequencing to identify miRNAs that may have an anti-inflammatory role in the LPS-induced inflammatory response. Two groups of bovine uterine cells were treated with phosphate buffer saline (PBS) and LPS, respectively. Compared with the control (PBS) group, the LPS-treated group had 219 differentially expressed miRNAs, of which 113 were upregulated, and 106 were downregulated. Gene ontology enrichment analysis revealed that the target genes of differentially expressed miRNAs were significantly enriched in several activities, such as transferase activity, small molecule binding, and protein binding. Kyoto Encyclopedia of Genes and Genomes pathway analysis indicated that the target genes of differential miRNAs were significantly enriched in fluid shear stress and atherosclerosis, MAPK signaling pathway, TNF signaling pathway. By analyzing differentially expressed miRNAs, we found that miR-200c, miR-1247-3p, and let-7b are directly related to the inflammatory response. For instance, miR-200c target genes (MAP3K1, MAP4K3, MAPKAPK5, MAP3K8, MAP3K5) and let-7b target genes (CASP3, IL13, MAPK8, CXCL10) were significantly enriched in the MAPK and IL-17 signaling pathways, respectively. In summary, our research provides insight into the molecular mechanism underlying LPS-induced inflammation in vitro, which may unveil new targets for the treatment of endometritis.
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Affiliation(s)
- Chenbo Yan
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China
| | - Haimiao Lv
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China
| | - Zhan Peng
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China
| | - Dexin Yang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China
| | - Puxiu Shen
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China
| | - Jingcheng Yu
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China
| | - Chao Tong
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China; Wuhu Overseas Students Pioneer Park, Wuhu, 241006, PR China.
| | - Xinzhuang Wang
- College of Veterinary Medicine, Henan Agricultural University, Zhengzhou, 450000, People's Republic of China.
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LncRNA SOX2OT Knockdown Alleviates Lipopolysaccharide-Induced Damage of PC12 Cells by Regulating miR-331-3p/Neurod1 Axis. World Neurosurg 2020; 147:e293-e305. [PMID: 33340723 DOI: 10.1016/j.wneu.2020.12.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND Long noncoding RNAs (lncRNAs) serve as crucial regulators in the pathogenesis of spinal cord injury (SCI). However, the role of lncRNA SOX2 overlapping transcript (SOX2OT) in SCI remains to be well revealed. METHODS An SCI rat model was established and assessed by the Basso-Beattie-Bresnahan (BBB) method. An SCI PC12 cell model was established through lipopolysaccharide (LPS) treatment. Quantitative real-time polymerase chain reaction assay was used for SOX2OT, miR-331-3p, and neurogenic differentiation 1 (Neurod1) mRNA levels. Cell counting kit-8 assay and flow cytometry analysis were performed for cell viability and apoptosis, respectively. Enzyme-linked immunosorbent assay was performed for the levels of inflammatory cytokines. The production of superoxide dismutase and malondialdehyde was determined with relevant kits. Dual-luciferase reporter and RNA immunoprecipitation assays were conducted for the relationships among SOX2OT, miR-331-3p, and Neurod1. Western blot assay was employed for protein levels. RESULTS SOX2OT was elevated in SCI rat and cell models. SOX2OT knockdown relieved the injury of SCI in SCI rat model. Moreover, the suppressive role in PC12 cell viability and the promotional roles in apoptosis, inflammation, and oxidative stress mediated by LPS were all restored by silencing SOX2OT. For mechanism analysis, SOX2OT was identified as a sponge of miR-331-3p to positively regulate Neurod1 expression. Inhibition of miR-331-3p reversed the effect of SOX2OT knockdown on LPS-induced PC12 damage. Overexpression of miR-331-3p protected PC12 cells from LPS-induced damage by binding to Neurod1. In addition, SOX2OT knockdown relieved PC12 cell injury by inactivation of Janus kinase-signal transducer and activator of transcription pathway. CONCLUSIONS SOX2OT promoted PC12 cell injury through modulating miR-331-3p/Neurod1 axis and activating Janus kinase-signal transducer and activator of transcription pathway.
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Zhou W, Huang G, Ye J, Jiang J, Xu Q. Protective Effect of miR-340-5p against Brain Injury after Intracerebral Hemorrhage by Targeting PDCD4. Cerebrovasc Dis 2020; 49:593-600. [PMID: 33176298 DOI: 10.1159/000508210] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Accepted: 04/25/2020] [Indexed: 11/19/2022] Open
Abstract
OBJECTIVE Intracerebral hemorrhage (ICH) is a common cerebrovascular disease. Increasing evidence has documented the crucial role of microRNAs in ICH. The present study aimed to investigate the role and underlying mechanism of miR-340-5p in ICH. METHODS The collagenase-induced ICH rat model was established. The neurological function of rats and the cerebral water content of rat brain tissue were measured to assess the brain injury. BV-2 cells were recruited and treated by LPS to mimic ICH-induced inflammatory response. qRT-PCR was used for the measurement of miR-340-5p. The protein levels of TNF-α, IL-6, and IL-1β were detected using ELISA. Luciferase reporter gene assay was performed to confirm the target gene. RESULTS Downregulation of miR-340-5p was detected in the serum of ICH patients and the brain tissues of ICH rats. Overexpression of miR-340-5p reversed the influence of ICH on the neurological function score and cerebral water content and inhibited the production of proinflammatory cytokines (TNF-α, IL-6, and IL-1β), which were induced by ICH in vivo. In in vitro study, levels of TNF-α, IL-6, and IL-1β were significantly enhanced in cells after LPS treatment, but these increases were eliminated by overexpression of miR-340-5p. PDCD4 was a direct target gene of miR-340-5p. CONCLUSION miR-340-5p protects against brain injury after ICH. miR-340-5p might exert an anti-inflammatory effect during the occurrence of ICH via targeting PDCD4.
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Affiliation(s)
- Wei Zhou
- Department of Emergency Medicine, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, Shanghai, China
| | - Guandong Huang
- Department of Emergency Medicine, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, Shanghai, China
| | - Jueming Ye
- Department of Emergency Medicine, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, Shanghai, China
| | - Jiamei Jiang
- Department of Emergency Medicine, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, Shanghai, China,
| | - Qing Xu
- Department of Emergency Medicine, Shanghai Jiao Tong University Affiliated Sixth People' Hospital, Shanghai, China
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Lu K, Chen Q, Li M, He L, Riaz F, Zhang T, Li D. Programmed cell death factor 4 (PDCD4), a novel therapy target for metabolic diseases besides cancer. Free Radic Biol Med 2020; 159:150-163. [PMID: 32745771 DOI: 10.1016/j.freeradbiomed.2020.06.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 02/06/2023]
Abstract
Programmed cell death factor 4 (PDCD4) is originally described as a tumor suppressor gene that exerts antineoplastic effects by promoting apoptosis and inhibiting tumor cell proliferation, invasion, and metastasis. Several investigations have probed the aberrant expression of PDCD4 with the progression of metabolic diseases, such as polycystic ovary syndrome (PCOS), obesity, diabetes, and atherosclerosis. It has been ascertained that PDCD4 causes glucose and lipid metabolism disorders, insulin resistance, oxidative stress, chronic inflammatory response, and gut flora disorders to regulate the progression of metabolic diseases. This review aims to summarize the latest researches to uncover the structure, expression regulation, and biological functions of PDCD4 and to elucidate the regulatory mechanism of the development of tumors and metabolic diseases. This review has emphasized the understanding of the PDCD4 role and to provide new ideas for the research, diagnosis, and treatment of tumors and metabolic diseases.
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Affiliation(s)
- Kaikai Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Qian Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Mengda Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Lei He
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Farooq Riaz
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Tianyun Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Dongmin Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China.
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10
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Zhou Z, Li H, Li H, Zhang J, Fu K, Cao C, Deng F, Luo J. Comprehensive analysis of the differential expression profile of microRNAs in rats with spinal cord injury treated by electroacupuncture. Mol Med Rep 2020; 22:751-762. [PMID: 32468009 PMCID: PMC7339738 DOI: 10.3892/mmr.2020.11161] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 04/22/2020] [Indexed: 01/05/2023] Open
Abstract
Abnormal microRNA (miRNA) expression has been implicated in spinal cord injury (SCI), but the underlying mechanisms are poorly understood. To observe the effect of electroacupuncture (EA) on miRNA expression profiles in SCI rats and investigate the potential mechanisms involved in this process, Sprague-Dawley rats were divided into sham, SCI and SCI+EA groups (n=6 each). Basso, Beattie and Bresnahan (BBB) scoring and hematoxylin-eosin staining of cortical tissues were used to evaluate spinal cord recovery with EA treatment 21 days post-surgery across the three groups. To investigate miRNA expression profiles, 6 Sprague-Dawley rats were randomly divided into SCI and SCI+EA groups (n=3 in each group) and examined using next-generation sequencing. Integrated miRNA-mRNA-pathway network analysis was performed to elucidate the interaction network of the candidate miRNAs, their target genes and the involved pathways. Behavioral scores suggested that hindlimb motor functions improved with EA treatments. Apoptotic indices were lower in the SCI+EA group compared with the SCI group. It was also observed that 168 miRNAs were differentially expressed between the SCI and SCI+EA groups, with 29 upregulated and 139 downregulated miRNAs in the SCI+EA group. Changes in miRNA expression are involved in SCI physiopathology, including inflammation and apoptosis. Reverse transcription-quantitative PCR measurement of the five candidate miRNAs, namely rno-miR-219a-5p, rno-miR-486, rno-miR-136-5p, rno-miR-128-3p, and rno-miR-7b, was consistent with RNA sequencing data. Integrated miRNA-mRNA-pathway analysis suggested that the MAPK, Wnt and NF-κB signaling pathways were involved in EA-mediated recovery from SCI. The present study evaluated the miRNA expression profiles involved in EA-treated SCI rats and demonstrated the potential mechanism and functional role of miRNAs in SCI in rats.
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Affiliation(s)
- Zhidong Zhou
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Hejian Li
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Hongchun Li
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Jing Zhang
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Kaiwen Fu
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Cao Cao
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Fumou Deng
- Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
| | - Jun Luo
- Department of Rehabilitation Medicine, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330000, P.R. China
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11
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Wang Y, Chang Q. MicroRNA miR-212 regulates PDCD4 to attenuate Aβ 25-35-induced neurotoxicity via PI3K/AKT signaling pathway in Alzheimer's disease. Biotechnol Lett 2020; 42:1789-1797. [PMID: 32474742 DOI: 10.1007/s10529-020-02915-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 05/15/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Alzheimer's disease (AD) is a progressive neurodegenerative disease in the elderly. MicroRNA (miRNA) miR-212-3p (miR-212) has been reported to dysregulated in many neurodegenerative diseases including AD. However, the mechanism and function of miR-212 in AD has not been reported. METHODS The levels of miR-212 and PDCD4 in AD patients and Aβ25-35-treated SH-SY5Y and IMR-32 cells were measured by qRT-PCR and/or Western blot. The putative target of miR-212 was predicted by DIANA tools online database and the interaction between miR-212 and PDCD4 was validated by dual luciferase reporter assay and RNA pull-down assay. The cell proliferation, cell apoptosis and the protein levels of Bcl-2, Bax, Cleaved caspase 3, p-PI3K, PI3K, p-ATK and ATK were measured by MTT assay, flow cytometry and Western blot. RESULTS The level of miR-212 was apparently down-regulated, and the level of PDCD4 was significantly up-regulated in plasma from AD patients and Aβ25-35-treated SH-SY5Y and IMR-32 cells. Following a dual luciferase reporter assay verified the direct interaction between miR-212 and PDCD4. The RNA pull-down assay further validated this interaction. The functional experiment indicated that PDCD4 mitigated the promotion effects on cell viability, the apoptosis-inhibited protein Bcl-2, the ratio of p-PI3K/PI3K, p-ATK/ATK and the suppressive effects on cell apoptosis and the corresponding protein levels of Bax, Cleaved caspase 3 caused by miR-212 mimics. CONCLUSION All the data in this study revealed that miR-212 modulated PDCD4 to regulate cell proliferation, apoptosis through PI3K/AKT signaling pathway in Aβ25-35-treated SH-SY5Y and IMR-32 cells, and this new regulatory network may provide a novel mechanism of AD.
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Affiliation(s)
- Yanjun Wang
- Department of Thoracic Surgery, Dalian University Affiliated Xinhua Hospital, Dalian, 116021, China
| | - Qing Chang
- Department of Neurology, The Second Hospital of Dalian Medical University, No. 467 Zhongshan Rd, Shahekou District, Dalian, 116023, China.
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12
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MicroRNA-127 Inhibits the Progression of Melanoma by Downregulating Delta-Like Homologue 1. BIOMED RESEARCH INTERNATIONAL 2020; 2020:8523465. [PMID: 32051829 PMCID: PMC6995326 DOI: 10.1155/2020/8523465] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 12/10/2019] [Indexed: 12/19/2022]
Abstract
Objective Melanoma is the most common form of skin cancer with low survival rate and poor prognosis. MicroRNAs (miRNAs) have been reported to play essential roles in progression of melanoma. However, the role and mechanism of miR-127 in the process of melanoma remain poorly understood. Methods The expressions of miR-127 and delta-like homologue 1 (DLK1) were measured in melanoma tissues and cells by quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot. Cell proliferation and apoptosis were measured by MTT assay, flow cytometry, and Western blot. The interaction between miR-127 and DLK1 was investigated by bioinformatics analysis, luciferase activity assay, and RNA immunoprecipitation (RIP). Murine xenograft model was conducted to investigate the effect of miR-127 on tumor growth in vivo. Results miR-127 was inhibited and DLK1 mRNA was enhanced in melanoma tissues and cells. Low abundance of miR-127 in melanoma tissues predicted a poor prognosis and was associated with the malignant clinicopathological features. Overexpression of miR-127 inhibited cell proliferation and induced apoptosis in melanoma cells. Moreover, DLK1 was targeted by miR-127 and its restoration reversed the regulatory effect of miR-127 on the process of melanoma. Besides, the addition of miR-127 suppressed xenograft tumor growth via suppressing DLK1 protein level in nude mice. Conclusion miR-127 blocked the development of melanoma by targeting DLK1, providing a novel biomarker for the treatment of melanoma.
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13
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Zhu S, Zhou Z, Li Z, Shao J, Jiao G, Huang Y, Lin Y. Suppression of LINC00707 alleviates lipopolysaccharide-induced inflammation and apoptosis in PC-12 cells by regulated miR-30a-5p/Neurod 1. Biosci Biotechnol Biochem 2019; 83:2049-2056. [PMID: 31272297 DOI: 10.1080/09168451.2019.1637245] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
ABSTRACT
Long noncoding RNA (lncRNA) has emerged as a pivotal regulator improving neural regeneration in the progression of spinal cord injury (SCI). However, whether lncRNAs can be targeted for therapeutic intervention of SCI remains unclear. In this study, we found that LINC00707 expression was significantly up-regulated in lipopolysaccharide (LPS)-treated PC-12, a model that mimics nerve cell injury in an inflammatory environment after SCI. Suppression of LINC00707 alleviated LPS-induced inflammation and apoptosis in PC-12 cells. Furthermore, we found that LINC00707 adsorbed miR-30a-5p and silenced miR-30a-5p or overexpressed Neurod 1 reversed the effect of LINC00707 on the inflammation and apoptosis of LPS-treated PC-12 cells. These findings revealed that LINC00707 alleviates LPS-induced inflammation and apoptosis in PC-12 cells by targeting miR-30a-5p/Neurod 1, providing a preliminary theoretical basis for the clinical application of LINC00707 in SCI.
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Affiliation(s)
- Shiping Zhu
- Traditional Chinese Medicine Department, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Zhigang Zhou
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Zhizhong Li
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Jianli Shao
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Genlong Jiao
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Yu′En Huang
- Rehabitation department of Dongpu branch, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Yongxin Lin
- Department of Orthopedics, The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
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14
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Zheng H, Hu S, Cao J, Yao L, Zhang N. Long non-coding RNA TUG1 alleviates LPS-induced injury of PC-12 cells by down-regulating microRNA-127. Exp Mol Pathol 2019; 110:104287. [DOI: 10.1016/j.yexmp.2019.104287] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 07/15/2019] [Accepted: 07/17/2019] [Indexed: 01/05/2023]
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15
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Long non-coding RNA MALAT1 regulates cardiomyocytes apoptosis after hypoxia/reperfusion injury via modulating miR-200a-3p/PDCD4 axis. Biomed Pharmacother 2019; 111:1036-1045. [DOI: 10.1016/j.biopha.2018.12.122] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Revised: 12/29/2018] [Accepted: 12/30/2018] [Indexed: 12/12/2022] Open
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16
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Li R, Yin F, Guo Y, Ruan Q, Zhu Q. RETRACTED: Angelica polysaccharide protects PC-12 cells from lipopolysaccharide-induced injury via down-regulating microRNA-223. Biomed Pharmacother 2018; 108:1320-1327. [PMID: 30372834 DOI: 10.1016/j.biopha.2018.09.147] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 09/20/2018] [Accepted: 09/26/2018] [Indexed: 02/03/2023] Open
Abstract
This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. Concerns were initially raised regarding the Western Blots from Figures 1C, 1G, 2B, 2D, 4D, 4F, 5 (left panel), 6C and 6E. Given also the comments of Dr Elisabeth Bik regarding this article “… the Western blot bands in all 400+ papers are all very regularly spaced and have a smooth appearance in the shape of a dumbbell or tadpole, without any of the usual smudges or stains. All bands are placed on similar looking backgrounds, suggesting they were copy/pasted from other sources, or computer generated”, the journal requested the authors to provide the raw data. The authors have not provided raw data of sufficient quality and detail to support the authors’™ claim and therefore the Editor-in-Chief decided to retract the article.
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Affiliation(s)
- Ran Li
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, China
| | - Fei Yin
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, China
| | - Yingying Guo
- Department of Blood Transfusion, The First Bethune Hospital of Jilin University, Changchun, Jilin 130021, China
| | - Qing Ruan
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, China
| | - Qingsan Zhu
- Department of Orthopedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, China.
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17
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Xu H, Li F. miR‑127 aggravates myocardial failure by promoting the TGF‑β1/Smad3 signaling. Mol Med Rep 2018; 18:4839-4846. [PMID: 30272299 PMCID: PMC6236281 DOI: 10.3892/mmr.2018.9514] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Accepted: 07/23/2018] [Indexed: 12/24/2022] Open
Abstract
Myocardial failure has a negative impact on the quality of human life. MicroRNA (miR) expression abnormalities lead to the development of many pathological conditions, including myocardial failure, and therefore the present study primarily focused on the investigation of the functions of miR‑127 in the development of myocardial failure. The miR‑127 expression levels in serum samples from patients with myocardial failure were examined. Oil red O staining was used to analyze the characteristics of the myocardium of the patients. Immunohistochemistry was used to detect fatty acid synthase (FASN), stearoyl‑CoA desaturase‑1 (SCD1) and mitochondrial brown fat uncoupling protein 1 (UCP1) protein expression in the myocardium of the patients. Furthermore, C57BL/6J (B6) mice were induced with 15 mg/kg of doxorubicin. Echocardiography was used to detect the histopathological alterations of the myocardial cells by comparison of the myocardial tissues from the myocardial failure animal model and normal C57BL/6 mice. Reverse transcription‑quantitative polymerase chain reaction was used to detect the expression levels of miR‑127 following different induction periods and immunohistochemistry was used to detect the expression of transforming growth factor‑β1 (TGF‑β1) and mothers against decapentaplegic homolog 3 (Smad3). Immunofluorescence was used to detect the expression alterations TGF‑β1/Smad3 when miR‑127 overexpression or inhibition was established. The results of the present study indicated that myocardial failure resulted in an upregulated expression of miR‑127 and severe fat accumulation. FASN, SCD1 and UCP1 were highly expressed in the myocardial failure group compared with the control. Abdominal artery contraction and the ejection fraction were significantly reduced in the DOX‑induced B6 mice. The cardiomyocytes became hypertrophic, and left ventricular systolic pressure and left ventricular maximum ejection pressure were altered following DOX induction in B6 mice. The results confirmed that miR‑127 regulates the expression of TGF‑β1/Smad3. The potential pathological mechanism of the effect of miR‑127 may be based on the upregulation of the TGF‑β1/Smad3 signaling pathway.
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Affiliation(s)
- Hainian Xu
- Department of Cardiovascular Internal Medicine, Weifang People's Hospital, Weifang, Shandong 261041, P.R. China
| | - Fengmei Li
- Department of Internal Medicine, Weifang Zuoshan Central Hospital, Weifang, Shandong 261041, P.R. China
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18
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Fu C, Luo J, Ye S, Yuan Z, Li S. Integrated Lung and Tracheal mRNA-Seq and miRNA-Seq Analysis of Dogs with an Avian-Like H5N1 Canine Influenza Virus Infection. Front Microbiol 2018; 9:303. [PMID: 29556219 PMCID: PMC5844969 DOI: 10.3389/fmicb.2018.00303] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2017] [Accepted: 02/09/2018] [Indexed: 12/12/2022] Open
Abstract
Avian-like H5N1 canine influenza virus (CIV) causes severe respiratory infections in dogs. However, the mechanism underlying H5N1 CIV infection in dogs is unknown. The present study aimed to identify differentially expressed miRNAs and mRNAs in the lungs and trachea in H5N1 CIV-infected dogs through a next-generation sequencing-based method. Eighteen 40-day-old beagles were inoculated intranasally with CIV, A/canine/01/Guangdong/2013 (H5N1) at a tissue culture infectious dose 50 (TCID50) of 106, and lung and tracheal tissues were harvested at 3 and 7 d post-inoculation. The tissues were processed for miRNA and mRNA analysis. By means of miRNA-gene expression integrative negative analysis, we found miRNA–mRNA pairs. Lung and trachea tissues showed 138 and 135 negative miRNA–mRNA pairs, respectively. One hundred and twenty negative miRNA–mRNA pairs were found between the different tissues. In particular, pathways including the influenza A pathway, chemokine signaling pathways, and the PI3K-Akt signaling pathway were significantly enriched in all groups in responses to virus infection. Furthermore, dysregulation of miRNA and mRNA expression was observed in the respiratory tract of H5N1 CIV-infected dogs and notably, TLR4 (miR-146), NF-κB (miR-34c) and CCL5 (miR-335), CCL10 (miR-8908-5p), and GNGT2 (miR-122) were found to play important roles in regulating pathways that resist virus infection. To our knowledge, the present study is the first to analyze miRNA and mRNA expression in H5N1 CIV-infected dogs; furthermore, the present findings provide insights into the molecular mechanisms underlying influenza virus infection.
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Affiliation(s)
- Cheng Fu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Jie Luo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Shaotang Ye
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
| | - Ziguo Yuan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, China
| | - Shoujun Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Prevention and Control for Severe Clinical Animal Diseases, Guangzhou, China.,Guangdong Technological Engineering Research Center for Pet, Guangzhou, China
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