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Chen H, Zhang CJ, Zhao ZY, Gao YY, Zhao JT, Li XX, Zhang M, Wang H. Mechanisms underlying LncRNA SNHG1 regulation of Alzheimer's disease involve DNA methylation. J Toxicol Environ Health A 2024; 87:428-435. [PMID: 38551404 DOI: 10.1080/15287394.2024.2334248] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
Alzheimer's disease (AD) is a neurodegenerative disease associated with long non-coding RNAs and DNA methylation; however, the mechanisms underlying the role of lncRNA small nucleolar RNA host gene 1 (lncRNA SNHG1) and subsequent involvement of DNA methylation in AD development are not known. The aim of this study was to examine the regulatory mechanisms attributed to lncRNA SNHG1 gene utilizing 2 strains of senescence-accelerated mouse prone 8 (SAMP8) model of AD and compared to senescence-accelerated mouse resistant (SAMR) considered a control. Both strains of the mouse were transfected with either blank virus, psLenti-U6-SNHG1(low gene expression) virus, and psLenti-pA-SNHG1(gene overexpression) virus via a single injection into the brains for 2 weeks. At 2 weeks mice were subjected to a Morris water maze to determine any behavioral effects followed by sacrifice to extract hippocampal tissue for Western blotting to measure protein expression of p-tau, DNMT1, DNMT3A, DNMT3B, TET1, and p-Akt. No marked alterations were noted in any parameters following blank virus transfection. In SAMP8 mice, a significant decrease was noted in protein expression of DNMT1, DNMT3A, DNMT3B, and p-Akt associated with rise in p-tau and TET1. Transfection with ps-Lenti-U6-SNHG1 alone in SAMR1 mice resulted in a significant rise in DNMTs and p-Akt and a fall in p-tau and TET1. Transfection of SAMP8 with ps-Lenti-U6-SNHG1 blocked effects on overexpression noted in this mouse strain. However, knockdown of lncRNA SNHG1 yielded the opposite results as found in SAMR1 mice. In conclusion, the knockdown of lncRNA SNHG1 enhanced DNA methylation through the PI3K/Akt signaling pathway, thereby reducing the phosphorylation levels of tau in SAMP8 AD model mice with ameliorating brain damage attributed to p-tau accumulation with consequent neuroprotection.
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Affiliation(s)
- Hong Chen
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Chun-Jie Zhang
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
- Center of Collaborative Innovation in Translational Medicine, Baotou Medical College, Inner Mongolia, China
| | - Zhi-Ying Zhao
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Yang-Yang Gao
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Jian-Tian Zhao
- Institute of Public Health, Baotou Medical College, Inner Mongolia, China
| | - Xiao-Xu Li
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - Ming Zhang
- Institute of Neuroscience and Medical Technology, Department of Anatomy, Baotou Medical College, Inner Mongolia, China
| | - He Wang
- School of Health Sciences, University of Newcastle, Newcastle, Australia
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Deng L, Wu L, Chen D, Cao Y. SNHG1 knockdown promotes osteogenic differentiation of hDFSCs through anti-oxidative stress mediated by autophagy. J Cell Physiol 2024. [PMID: 38651182 DOI: 10.1002/jcp.31283] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/07/2024] [Accepted: 04/11/2024] [Indexed: 04/25/2024]
Abstract
The long noncoding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) plays a crucial role in tumorigenesis and is frequently employed as a prognostic biomarker. However, its involvement in the osteogenic differentiation of oral stem cells, particularly human dental follicle stem cells (hDFSCs), remains unclear. Our investigation revealed that the absence of SNHG1 enhances the osteogenic differentiation of hDFSCs. Furthermore, the downregulation of SNHG1 induces autophagy in hDFSCs, leading to a reduction in intracellular oxidative stress levels. Notably, this effect is orchestrated through the epigenetic regulation of EZH2. Our study unveils a novel function of SNHG1 in governing the osteogenic differentiation of hDFSCs, offering fresh insights for an in-depth exploration of the molecular mechanisms underlying dental follicle development. These findings not only provide a foundation for advancing the understanding of SNHG1 but also present innovative perspectives for promoting the repair and regeneration of periodontal supporting tissue, ultimately contributing to the restoration of periodontal health and tooth function.
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Affiliation(s)
- Lidi Deng
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Liping Wu
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Dongru Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Yang Cao
- Hospital of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
- Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong, China
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Jiang L, Qi A, Yang H, Wang S, Wang F, Bai X, Ren J. LncRNA SNHG1 serves as a biomarker for systemic lupus erythematosus and participates in the disease progression. APMIS 2024. [PMID: 38644557 DOI: 10.1111/apm.13410] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 03/20/2024] [Indexed: 04/23/2024]
Abstract
LncRNAs play an important role in autoimmune diseases. The purpose of this study was to explore the role of lncRNA SNHG1 in systemic lupus erythematosus (SLE), and laid a theoretical foundation for the study of SLE. The basic clinical information of all subjects was first collected for statistical analysis, and SNHG1 expression in the serum of all subjects was detected by RT-qPCR. The value of SNHG1 in the diagnosis of SLE was assessed by ROC. The correlation between SNHG1 and each blood sample index was analyzed by Pearson correlation analysis. The role of SNHG1 in primary peripheral blood mononuclear cells (PBMCs) apoptosis was explored. SNHG1 expression is relatively upregulated in patients with SLE compared to healthy people. SNHG1 expression was positively correlated with SLEDAI score, IgG, CRP, and ESR, and negatively correlated with C3 and C4. ROC indicated that SNHG1 has the potential to assist in the diagnosis of SLE. PBMCs apoptosis in SLE was higher than that in control group, the knockdown and overexpression of SNHG1 could correspondingly inhibit and promote PBMCs apoptosis. SNHG1 has the potential to be a diagnosis marker for SLE and may be involved in regulating PBMCs apoptosis.
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Affiliation(s)
- Linsen Jiang
- Department of Nephrology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Anning Qi
- Department of Laboratory, Nanjing LuHe People's Hospital, Nanjing, China
| | - Hongyu Yang
- Department of Clinical Laboratory, Affiliated Hospital of PanZhiHua University, Panzhihua, China
| | - Shuping Wang
- Department of Clinical Laboratory, Affiliated Hospital of PanZhiHua University, Panzhihua, China
| | - Fei Wang
- Department of Clinical Laboratory, Affiliated Hospital of PanZhiHua University, Panzhihua, China
| | - Xuemei Bai
- Department of Clinical Laboratory, Affiliated Hospital of PanZhiHua University, Panzhihua, China
| | - Juan Ren
- Department of Clinical Laboratory, Affiliated Hospital of PanZhiHua University, Panzhihua, China
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Wang Q, Yang J, Pan R, Zha Z. LncRNA SNHG1 overexpression alleviates osteoarthritis via activating PI3K/Akt signal pathway and suppressing autophagy. Immunobiology 2024; 229:152799. [PMID: 38636283 DOI: 10.1016/j.imbio.2024.152799] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 03/13/2024] [Accepted: 03/24/2024] [Indexed: 04/20/2024]
Abstract
We hereby intend to further explore and confirm the underlying mechanism of Small nucleolar RNA Host Gene 1 (SNHG1) in osteoarthritis (OA). For in vitro assays, OA was induced in primary chondrocytes with interleukin-1β (IL-1β) treatment; while for in vivo tests, OA model was established in mice using the destabilization of the medial meniscus (DMM) method. Cell viability and apoptosis were assessed with MTT and flow cytometry assays, respectively. Cartilage tissue was stained by Safranin-O/Fast Green Staining. The mRNA and protein levels were separately determined via quantitative real-time polymerase chain reaction (qRT-PCR) and western blot. SNHG1 overexpression promoted the viability yet inhibited the apoptosis of chondrocytes injured by IL-1β. Moreover, the overexpression of SNHG1 promoted B-cell lymphoma-2 (Bcl-2) expression and activated phosphoinositol-3 kinase (PI3K)/protein kinase B (Akt) pathway but suppressed the process of autophagy, which led to down-regulation of light chain 3 (LC3)-II/I level and up-regulation of P62 level. However, rapamycin (RAPA, an autophagy activator) and LY294002 (a PI3K inhibitor) reversed the effects of SNHG1 overexpression on the viability and apoptosis of chondrocytes as well as on the proteins related to PI3K/Akt pathway and autophagy. In OA-modeled mice, SNHG1 overexpression prevented the loss of chondrocytes via the activation of PI3K/Akt pathway and the suppression of autophagy. SNHG1 overexpression might inhibit the apoptosis of chondrocytes by promoting PI3K/Akt pathway and inhibiting autophagy.
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Affiliation(s)
- Qiushi Wang
- Institute of Orthopedic Diseases and Center for Joint Surgery and Sports Medicine, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong, China
| | - Jie Yang
- Institute of Orthopedic Diseases and Center for Joint Surgery and Sports Medicine, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong, China
| | - Rui Pan
- Institute of Orthopedic Diseases and Center for Joint Surgery and Sports Medicine, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong, China
| | - Zhengang Zha
- Institute of Orthopedic Diseases and Center for Joint Surgery and Sports Medicine, The First Affiliated Hospital of Jinan University, Guangzhou City, Guangdong, China.
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Jiang X, Yuan Y, Tang L, Wang J, Liu Q, Zou X, Duan L. Corrigendum: Comprehensive pan-cancer analysis of the prognostic and immunological roles of the METTL3/lncRNA- SNHG1/miRNA-140-3p/UBE2C axis. Front Cell Dev Biol 2024; 12:1392532. [PMID: 38645409 PMCID: PMC11026846 DOI: 10.3389/fcell.2024.1392532] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 03/22/2024] [Indexed: 04/23/2024] Open
Abstract
[This corrects the article DOI: 10.3389/fcell.2021.765772.].
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Affiliation(s)
- Xiulin Jiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, China
| | - Yixiao Yuan
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lin Tang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Juan Wang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qianqian Liu
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaolan Zou
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lincan Duan
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
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Zhang T, Ji C, Zhang Y, Yuan M, Gao H, Yin Q. LncRNA SNHG1 Accelerates Cell Proliferation, Migration, and Invasion of Hepatoblastoma Through Mediating miR-6838-5p/PIM3/RhoA Axis. Biochem Genet 2024; 62:59-76. [PMID: 37248373 DOI: 10.1007/s10528-023-10404-x] [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: 02/02/2023] [Accepted: 05/16/2023] [Indexed: 05/31/2023]
Abstract
Hepatoblastoma (HB) is a common primary liver malignant tumor in children. Long non-coding RNAs (lncRNAs) are closely engaged in HB progression. The role and regulatory molecule mechanism of lncRNA small nucleolar RNA host gene 1 (SNHG1) in HB remain unclear. Through qRT-PCR or western blot, we found that SNHG1 and proviral integration site for moloney murine leukemia virus 3 (PIM3) were elevated but miR-6838-5p was decreased in HB cells. Cell biology experiments revealed that SNHG1 depletion or miR-6838-5p upregulation suppressed cell proliferation, migration, and invasion of HB cells. Mechanistically, luciferase activity assay validated that miR-6838-5p could interact with SNHG1 or PIM3. SNHG1 up-regulated PIM3 expression via sponging miR-6838-5p. Moreover, miR-6838-5p inhibitor abolished SNHG1 depletion-mediated suppression of malignant behaviors in HB cells. PIM3 overexpression neutralized miR-6838-5p mimics-mediated repression of malignant phenotypes in HB cells. Furthermore, miR-6838-5p overexpression suppressed RhoA activation, which was restored by PIM3 upregulation. What's more, the results at the cellular level were further verified by nude mice tumor formation experiment. In conclusion, SNHG1 regulated miR-6838-5p/PIM3/RhoA axis to promote malignant phenotypes of HB, which might provide novel therapeutic target for HB treatment.
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Affiliation(s)
- Tian Zhang
- General Surgery, Hunan Children's Hospital, No. 86, ZiYuan Road, Yuhua District, Changsha, 410007, Hunan Province, People's Republic of China
| | - Chunyi Ji
- General Surgery, Hunan Children's Hospital, No. 86, ZiYuan Road, Yuhua District, Changsha, 410007, Hunan Province, People's Republic of China
| | - Yanbing Zhang
- General Surgery, Hunan Children's Hospital, No. 86, ZiYuan Road, Yuhua District, Changsha, 410007, Hunan Province, People's Republic of China
| | - Miaoxian Yuan
- General Surgery, Hunan Children's Hospital, No. 86, ZiYuan Road, Yuhua District, Changsha, 410007, Hunan Province, People's Republic of China
| | - Hongqiang Gao
- General Surgery, Hunan Children's Hospital, No. 86, ZiYuan Road, Yuhua District, Changsha, 410007, Hunan Province, People's Republic of China
| | - Qiang Yin
- General Surgery, Hunan Children's Hospital, No. 86, ZiYuan Road, Yuhua District, Changsha, 410007, Hunan Province, People's Republic of China.
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Pan K, Lu Y, Cao D, Peng J, Zhang Y, Li X. Long Non-coding RNA SNHG1 Suppresses the Osteogenic Differentiation of Bone Marrow Mesenchymal Stem Cells by Binding with HMGB1. Biochem Genet 2023:10.1007/s10528-023-10564-w. [PMID: 38038773 DOI: 10.1007/s10528-023-10564-w] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 10/26/2023] [Indexed: 12/02/2023]
Abstract
Osteoporosis (OP) has a significant detrimental impact on the health of the elder. Long-term clinical effectiveness of current drugs used for OP treatment is limited. Therefore, it is very important to explore novel treatment targets for OP. The expression of SNHG1, HMGB1, OCN and OPN in gene level was measured using RT-qPCR, and the protein expression was determined by Western blotting assay. The concentration of IL-1β and IL-18 in supernatant of the bone marrow mesenchymal stem cells (BMSCs) was measured by ELISA. The interaction between SNHG1 and HMGB1 was confirmed by RNA pull down. Besides, alizarin red staining was performed to evaluate the differentiation of BMSCs into osteoblast. SNHG1 and HMGB1 were found to be upregulated in the serum of OP patients. During the osteogenic differentiation of BMSCs, the expression of osteoblastogenesis markers (OCN and OPN) and the activity of ALP were upregulated, while the expression levels of SNHG1 and HMGB1 were decreased in a time-dependent manner. In addition, the interaction between SNHG1 and HMGB1, expression of pyroptosis-associated factors (caspase-1 p20 and GSDMD-N), and secretion of IL-1β and IL-18 were also decreased during osteogenic differentiation. Interestingly, increasing SNHG1 promoted HMGB1 expression, activated pyroptosis, but inhibited osteogenic differentiation. Silencing HMGB1 or inhibiting caspase-1 partially rescued the inhibitory effect of SNHG1 on osteogenic differentiation. Our findings indicate that SNHG1 suppresses the osteogenic differentiation of BMSCs by activating pyroptosis through interaction with HMGB1 and promotion of HMGB1 expression. Our work provides further evidence supporting SNHG1 acts as a potential target for OP treatment, and reveals for the first time that SNHG1 regulates osteogenic differentiation by affecting pyroptosis.
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Affiliation(s)
- Kaihua Pan
- Department of Orthopaedics, The First Hospital of Changsha, No. 311, Yingpan Road, Kaifu District, Changsha, 410005, Hunan, People's Republic of China
| | - Yuanyuan Lu
- Department of Orthopaedics, The First Hospital of Changsha, No. 311, Yingpan Road, Kaifu District, Changsha, 410005, Hunan, People's Republic of China
| | - Daning Cao
- Department of Orthopaedics, The First Hospital of Changsha, No. 311, Yingpan Road, Kaifu District, Changsha, 410005, Hunan, People's Republic of China
| | - Jiang Peng
- Department of Orthopaedics, The First Hospital of Changsha, No. 311, Yingpan Road, Kaifu District, Changsha, 410005, Hunan, People's Republic of China
| | - Yunqing Zhang
- Department of Orthopaedics, The First Hospital of Changsha, No. 311, Yingpan Road, Kaifu District, Changsha, 410005, Hunan, People's Republic of China
| | - Xiaoming Li
- Department of Orthopaedics, The First Hospital of Changsha, No. 311, Yingpan Road, Kaifu District, Changsha, 410005, Hunan, People's Republic of China.
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Xu Y, Bao Y, Qiu G, Ye H, He M, Wei X. METTL3 promotes proliferation and migration of colorectal cancer cells by increasing SNHG1 stability. Mol Med Rep 2023; 28:217. [PMID: 37772373 PMCID: PMC10568253 DOI: 10.3892/mmr.2023.13104] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/22/2023] [Indexed: 09/30/2023] Open
Abstract
N6‑methyladenosine (m6A) serves an essential role in RNA modulation and is implicated in multiple malignancies, including colorectal cancer (CRC). Methyltransferase‑like 3 (METTL3) is an important writer in m6A modification, however its role in CRC in modifying small nucleolar RNA host gene 1 (SNHG1), an oncogenic long noncoding RNA, remains unclear. In the present study, METTL3 expression in CRC was assessed using online bioinformatics analysis, immunohistochemistry staining, western blotting, reverse transcription (RT)‑quantitative PCR (qPCR) and cell transfections. Cell proliferation, migration and invasion were determined using functional Cell Counting Kit‑8 (CCK‑8) and Transwell assays. SNHG1 expression in CRC was evaluated using online bioinformatics analysis and RT‑qPCR. Methylated RNA immunoprecipitation qPCR was performed to assess m6A modification changes of SNHG1 mRNA. The present study demonstrated that METTL3 is upregulated in CRC tissues and cell lines. Moreover, METTL3 expression was associated with several unfavourable clinical features in patients with CRC, including the stage of lymph node metastases and overall survival. Functional Transwell and CCK‑8 assays demonstrated that knockdown of METTL3 suppressed CRC cell proliferation and migration. Furthermore, METTL3 was positively correlated with SNHG1 in CRC tissue, as indicated by analysis of data from The Cancer Genome Atlas. Mechanistically, SNHG1 contains 18 m6A modification sites. Through cell transfections and actinomycin D assays, the present study found that METTL3‑mediated m6A modification at these sites enhances the stability of SNHG1 in CRC cells. Finally, it was demonstrated that SNHG1 knockdown partially diminished the facilitative effect of METTL3 on CRC cell migration and proliferation. The present study concluded that METTL3, a potential biomarker for assessing overall survival and metastasis in CRC, may serve as an oncogene, promote SNHG1 m6A modification, improve the stability of SNHG1 and enhance SNHG1‑mediated oncogenic function in CRC.
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Affiliation(s)
- Yeqiu Xu
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Yuxin Bao
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Guanzhen Qiu
- Fourth Department of Orthopedic Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
| | - Huinan Ye
- Department of Medical Oncology, Cancer Hospital of Dalian University of Technology/Liaoning Cancer Hospital and Institute, Shenyang, Liaoning 110024, P.R. China
| | - Ming He
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110024, P.R. China
| | - Xilin Wei
- Third Department of General Surgery, Central Hospital Affiliated to Shenyang Medical College, Shenyang, Liaoning 110024, P.R. China
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Tian P, Wei J, Li J, Ren J, He C. Cancer-Associated Fibroblasts Boost Tumorigenesis of Clear Cell Renal Cell Carcinoma via Exosome-Mediated Paracrine SNHG1. Biochem Genet 2023:10.1007/s10528-023-10512-8. [PMID: 37815626 DOI: 10.1007/s10528-023-10512-8] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 09/05/2023] [Indexed: 10/11/2023]
Abstract
Despite the dominant roles of cancer-associated fibroblasts (CAFs) have attached much attention in tumorigenesis, the CAFs-derived molecular determinants that regulate renal cell carcinoma (RCC) development remains elusive. Our previous study uncovered an oncogenic SNHG1 in the immune escape of RCC, whereas CAFs-derived exosomes could be a source accounting for increasing SNHG1 in RCC cells, this is still a mystery. The obtained CAFs and normal fibroblast (NFs) from fresh RCC and adjacent tissues were firstly identified using western blot and immunofluorescent staining. The enrichment of SNHG1 was validated by RT-qPCR. CAFs-derived exosomes were isolated from conditioned medium using ultracentrifugation method and ExoQuick-TC system. The internalization of exosomes, transfer of SNHG1, was measured by immunofluorescence. Regulation of conditioned medium or exosomal SNHG1 from CAFs on RCC biological functions was evaluated by CCK-8, EdU incorporation, colony formation, and transwell assays to assess the RCC cell proliferation, migration, and invasion. SNHG1 was significantly upregulated in CAFs isolated from RCC stroma. Exosomes derived from CAFs transferred SNHG1 to RCC cells and resulted in an increased SNHG1 expression in RCC cells. The exosomes excreted by CAFs promoted RCC cell proliferation, migration, and invasion, whereas the promotion effect of CAFs-exosomes on RCC progression was attenuated by SNHG1 knockdown. The present study revealed a new mechanism of exosomal SNHG1 extracted from CAFs enhanced RCC progression and may provide a potential target for the treatment of RCC.
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Affiliation(s)
- Pei Tian
- Department of Urology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, People's Republic of China
| | - Jinxing Wei
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, People's Republic of China
| | - Jing Li
- Department of Urology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, People's Republic of China
| | - Junkai Ren
- Department of Urology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, People's Republic of China
| | - Chaohong He
- Department of Urology, The Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, No. 127, Dongming Road, Jinshui District, Zhengzhou, 450008, Henan, People's Republic of China.
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Zhou L, Zhang Q, Cheng J, Shen X, Li J, Chen M, Zhou C, Zhou J. LncRNA SNHG1 upregulates FANCD2 and G6PD to suppress ferroptosis by sponging miR-199a-5p/3p in hepatocellular carcinoma. Drug Discov Ther 2023; 17:248-256. [PMID: 37599085 DOI: 10.5582/ddt.2023.01035] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
Ferroptosis is a form of regulated cell death (RCD) triggered by iron-dependent lipid peroxidation and is closely associated with the occurrence and progression of hepatocellular carcinoma (HCC). The lncRNA SNHG1 (small nucleolar RNA host gene 1) has been shown to play an oncogenic role in HCC, but its function in RCD other than autophagy and apoptosis is still unknown. Here, we investigated the correlation between SNHG1 and 156 typical markers of five RCD types based on RNA sequencing data from The Cancer Genome Atlas database and showed the negative regulators of ferroptosis FANCD2 (Fanconi anemia complementation group D2) and G6PD (glucose-6-phosphate dehydrogenase) to be the most highly and fifth most highly correlating factors with SNHG1, respectively. A competitive endogenous RNA network of SNHG1 - miR-199a-5p/3p - FANCD2/G6PD was constructed bioinformatically. In vitro experiments showed that overexpression of the miR-199a precursor led to a decrease in expression of SNHG1, FANCD2, and G6PD, whereas knockdown of SNHG1 decreased expression of FANCD2 and G6PD but increased levels of miR-199a-5p and miR-199a-3p in HCC cells (Huh7 and HepG2). In addition, knockdown of SNHG1 increased erastin-mediated ferroptosis, iron accumulation, and lipid peroxidation. These results suggest that SNHG1 upregulates FANCD2 and G6PD by sponging miR-199a, thereby inhibiting ferroptosis in HCC. Moreover, a signature based on expression of SNHG1, FANCD2, and G6PD was identified as being associated with overall survival and the immunological microenvironment in HCC. Collectively, this study identified the SNHG1-miR-199a-FANCD2/G6PD axis in HCC, which is a potential marker for the prognosis and therapy of this tumor.
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Affiliation(s)
- Lin Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
| | - Qing Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
- Clinical Research Center for Reproduction and Genetics in Hunan Province, Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan, China
| | - Jiaxin Cheng
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
| | - Xiandie Shen
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
| | - Jing Li
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
| | - Mingya Chen
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
| | - Chang Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
| | - Jianlin Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan, China
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11
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Zeng H, Zhou S, Cai W, Kang M, Zhang P. LncRNA SNHG1: role in tumorigenesis of multiple human cancers. Cancer Cell Int 2023; 23:198. [PMID: 37684619 PMCID: PMC10492323 DOI: 10.1186/s12935-023-03018-1] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 08/06/2023] [Indexed: 09/10/2023] Open
Abstract
Small nucleolar RNA host gene 1 (SNHG1) is an important member of the SNHG family. This family is composed of a group of host genes that can be processed into small nucleolar RNAs and play important biological functions. In an oncogenic role, the SNHG1 expression is increased in various cancers, which has immense application prospects in the diagnosis, treatment, and prognosis of malignant tumors. In this review, we have summarized the role and molecular mechanism of SNHG1 in the development of various cancers. In addition, we have emphasized the clinical significance of SNHG1 in cancers in our article. This molecule is expected to be a new marker for potential usage in the diagnosis, prognosis, and treatment of cancer.
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Affiliation(s)
- Huang Zeng
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Shouang Zhou
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Weiqiang Cai
- School of Basic Medical Sciences, Fujian Medical University, Fuzhou, China
| | - Mingqiang Kang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou, Fuzhou, 350001, China.
| | - Peipei Zhang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, 29 Xinquan Road, Gulou, Fuzhou, 350001, China.
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12
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Li Q, Zhang B, Lu J, Wa Q, He M, Xie L, Zhang L. SNHG1 functions as a ceRNA in hypertrophic scar fibroblast proliferation and apoptosis through miR-320b/CTNNB1 axis. Arch Dermatol Res 2023; 315:1593-1601. [PMID: 36754869 DOI: 10.1007/s00403-022-02516-y] [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: 10/08/2022] [Revised: 12/06/2022] [Accepted: 12/12/2022] [Indexed: 02/10/2023]
Abstract
Hypertrophic scar (HS) is a fibrotic disease caused by skin injury. Competing endogenous RNA (ceRNA) has been demonstrated to implicate in the regulation of cell malignant phenotypes. This research aims to reveal the effect of catenin beta 1 (CTNNB1) on the functions of hypertrophic scar fibroblasts (HSFBs) and its role in a ceRNA network. RNA expression level was assessed by quantitative reverse transcription polymerase chain reaction (RT-qPCR). The proliferation and apoptosis of HSFB was detected via Cell Counting Kit-8 (CCK-8) assay and flow cytometry analysis. Mechanism experiments included RNA pull down assay, luciferase reporter assay and RNA-binding protein immunoprecipitation (RIP) assay were applied to analyze the upstream molecular mechanism of CTNNB1. CTNNB1 was highly expressed in HSFB. CTNNB1 depletion repressed malignant growth of HSFB. Mechanically, CTNNB1 was targeted by microRNA-320b (miR-320b) in HSFB. Small nucleolar RNA host gene 1 (SNHG1) aced as a ceRNA to upregulate CTNNB1 expression via sponging miR-320b in HSFB. CTNNB1 overexpression could reverse the impact of SNHG1 depletion on the proliferation and apoptosis of HSFB. SNHG1 acts as a ceRNA in modulating HSFB proliferation and apoptosis through miR-320b/CTNNB1 axis. SNHG1 act as a ceRNA to promote HSFB growth by sponging miR-320b to upregulate CTNNB1.
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Affiliation(s)
- Qiaoling Li
- Center of Medical Cosmetology, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Jinjiang District, Chengdu, 610011, Sichuan, China.
| | - Bowei Zhang
- Department of Vascular and Thyroid Surgery, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, 610072, Sichuan, China
| | - Jie Lu
- Center of Medical Cosmetology, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Jinjiang District, Chengdu, 610011, Sichuan, China
| | - Qingbiao Wa
- Center of Medical Cosmetology, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Jinjiang District, Chengdu, 610011, Sichuan, China
| | - Mei He
- Center of Medical Cosmetology, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Jinjiang District, Chengdu, 610011, Sichuan, China
| | - Lixia Xie
- Center of Medical Cosmetology, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Jinjiang District, Chengdu, 610011, Sichuan, China
| | - Lei Zhang
- Center of Medical Cosmetology, Chengdu Second People's Hospital, No. 10, Qingyun South Street, Jinjiang District, Chengdu, 610011, Sichuan, China
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13
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Lin C, Liu M, Guo J, Jia R. Cryotherapy Attenuates Inflammation via the lncRNA SNHG1/miR-9-5p/NFKB1 Regulatory Axis in Periodontal Ligament Cells. Int J Mol Sci 2023; 24:12097. [PMID: 37569472 PMCID: PMC10418934 DOI: 10.3390/ijms241512097] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 07/25/2023] [Accepted: 07/26/2023] [Indexed: 08/13/2023] Open
Abstract
Cryotherapy is a common non-pharmacological method to relieve pain and inflammation. Clinical studies have shown that cryotherapy can reduce postoperative pain after root canal therapy, but the mechanism remains unclear. In this study, we aimed to investigate the underlying molecular mechanisms by which cryotherapy reduces inflammation in lipopolysaccharide (LPS)-stimulated periodontal ligament cells through transcriptome sequencing analysis. We found that cryotherapy significantly reduced the expression of multiple proinflammatory cytokines and chemokines, and NFKB1 was the key regulator down-regulated by cryotherapy. Importantly, we discovered that lncRNA SNHG1 expression level significantly decreased after cold treatment. SNHG1 expression was positively related to NFKB1 while negatively correlated with miR-9-5p, which formed a novel ceRNA regulatory pathway. Knockdown of SNHG1 significantly reduced the expression of NFKB1, IL1B, and IL6, while overexpression of SNHG1 significantly increased the expression of these genes. In conclusion, our study demonstrated that cryotherapy can effectively reduce inflammation in LPS-induced periodontal ligament cells by suppressing the lncRNA SNHG1/miR-9-5p/NFKB1 axis.
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Affiliation(s)
- Can Lin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430072, China; (C.L.); (M.L.)
| | - Miaomiao Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430072, China; (C.L.); (M.L.)
| | - Jihua Guo
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430072, China; (C.L.); (M.L.)
- Department of Endodontics, School & Hospital of Stomatology, Wuhan University, Wuhan 430079, China
| | - Rong Jia
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, Wuhan 430072, China; (C.L.); (M.L.)
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14
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Shen DF, Qi HP, Zhang WN, Sang WX. Resveratrol Promotes Autophagy to Improve neuronal Injury in Parkinson's Disease by Regulating SNHG1/miR-128-3p/SNCA Axis. Brain Sci 2023; 13:1124. [PMID: 37626481 PMCID: PMC10452706 DOI: 10.3390/brainsci13081124] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 08/27/2023] Open
Abstract
BACKGROUND Parkinson's disease (PD) is seriously threatening the health and life quality of the elderly, who have a high incidence and high disability rate. Resveratrol (RES) was reported to play a protective role in PD. However, the functions and potential mechanism of RES in PD remain unclear, which need to be further explored. METHODS Human neuroblastoma cells (SH-SY5Y and SK-N-SH) were subjected to 1-Methyl-4-phenylpyridium (MPP+) induction to construct a cell model of PD. Cell viability was evaluated using CCK-8. The gene expression was evaluated using qRT-PCR and western blot. Luciferase activity assay and RIP were performed to validate interactions among SNHG1, miR-128-3p and SNCA. RESULTS Our results exhibited that RES reduced SNHG1 and SNCA expression but elevated miR-128-3p expression in human neuroblastoma cells upon MPP+ induction. Functionally, RES resulted in the promotion of cell autophagy in MPP+-induced human neuroblastoma cells, while these influences were abolished by SNHG1 overexpression. Mechanistically, SNHG1 could indirectly elevate SNCA expression via sponging miR-128-3p. Moreover, SNCA overexpression reversed SNHG1 silencing-induced cell autophagy in MPP+-induced human neuroblastoma cells upon RES pre-incubation. CONCLUSIONS RES prevented MPP+-induced repression of cell autophagy through inhibiting the SNHG1/miR-128-3p/SNCA axis, suggesting that RES might play a preventive effect on PD progression.
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Affiliation(s)
- Dong-Fang Shen
- Department of Neurology, The Fourth Affiliated Hospital of Harbin Medical University, No.37, Nangang District, Harbin 150001, China; (H.-P.Q.); (W.-N.Z.); (W.-X.S.)
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15
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Zielske SP, Chen W, Ibrahim KG, Cackowski FC. SNHG1 opposes quiescence and promotes docetaxel sensitivity in prostate cancer. BMC Cancer 2023; 23:672. [PMID: 37464317 DOI: 10.1186/s12885-023-11006-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 12/01/2022] [Accepted: 05/25/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND A majority of prostate cancer cells are in a non-proliferating, G0 (quiescent) phase of the cell cycle and may lie dormant for years before activation into a proliferative, rapidly progressing, disease phase. Many mechanisms which influence proliferation and quiescence choices remain to be elucidated, including the role of non-coding RNAs. In this study, we investigated the role of a long non-coding RNA (lncRNA), SNHG1, on cell proliferation, quiescence, and sensitivity to docetaxel as a potential factor important in prostate cancer biology. METHODS Publically available, anonymous, clinical data was obtained from cBioPortal for analysis. RNAi and prostate cancer cell lines were utilized to investigate SNHG1 in vitro. We measured G0 cells, DNA synthesis, and cell cycle distribution by flow cytometry. Western blotting was used to assess G2 arrest and apoptosis. These parameters were also investigated following docetaxel treatment. RESULTS We discovered that in prostate cancer patients from The Cancer Genome Atlas (TCGA) data set, high SNHG1 expression in localized tumors correlated with reduced progression-free survival, and in a data set of both primary and metastatic tumors, high SNHG1 expression was associated with metastatic tumors. In vitro analysis of prostate cancer cell lines showed SNHG1 expression correlated with a quiescent versus proliferative phenotype. Knockdown of SNHG1 by RNAi in PC3 and C4-2B cells resulted in an accumulation of cells in the G0 phase. After knockdown, 60.0% of PC3 cells were in G0, while control cultures had 13.2% G0. There were reciprocal decreases in G1 phase, but little impact on the proportion of cells in S and G2/M phases, depending on cell line. DNA synthesis and proliferation were largely halted- decreasing by 75% and 81% in C4-2B and PC3 cells, respectively. When cells were treated with docetaxel, SNHG1-depleted C4-2B and PC3 cells were resistant to G2 arrest, and displayed reduced apoptosis, as indicated by reduced cyclin B1 and cleaved caspase 3, suggesting SNHG1 levels may modulate drug response. CONCLUSIONS Overall, these results indicate SNHG1 has complex roles in prostate cancer, as it stimulates cell cycle entry and disease progression, but sensitizes cells to docetaxel treatment.
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Affiliation(s)
- Steven P Zielske
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA
| | - Wei Chen
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA
| | - Kristina G Ibrahim
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA
| | - Frank C Cackowski
- Department of Oncology, Wayne State University and Karmanos Cancer Institute, 4100 John R, MI, 48201, Detroit, USA.
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Zhang H, Ma B, Li N, Zhang L, Xu J, Zhang S, Guo Z, Han C, Xu S, Li X, Zhang B. SNHG1, a KLF4-upregulated gene, promotes glioma cell survival and tumorigenesis under endoplasmic reticulum stress by upregulating BIRC3 expression. J Cell Mol Med 2023. [PMID: 37243389 DOI: 10.1111/jcmm.17779] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 04/13/2023] [Accepted: 05/08/2023] [Indexed: 05/28/2023] Open
Abstract
Increasing evidence indicates that long noncoding RNAs (lncRNAs) play crucial roles in the resistance to endoplasmic reticulum (ER) stress in many cancers. However, ER stress-regulated lncRNAs are still unknown in glioma. In the present study, we investigated the altered lncRNAs upon ER stress in glioma and found that small nucleolar RNA host gene 1 (SNHG1) was markedly increased in response to ER stress. Increased SNHG1 suppressed ER stress-induced apoptosis and promoted tumorigenesis in vitro and in vivo. Further mechanistic studies indicated that SNHG1 elevated BIRC3 mRNA stability and enhanced BIRC3 expression. We also found that KLF4 transcriptionally upregulated SNHG1 expression and contributed to the ER stress-induced SNHG1 increase. Collectively, the present findings indicated that SNHG1 is a KLF4-regulated lncRNA that suppresses ER stress-induced apoptosis and facilitates gliomagenesis by elevating BIRC3 expression.
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Affiliation(s)
- Hongqiang Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Binbin Ma
- Department of Neurosurgery, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
| | - Na Li
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Li Zhang
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Jialu Xu
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Shuqi Zhang
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Ziming Guo
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Chuanchun Han
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Shasha Xu
- Department of Gastroendoscopy, the Fourth Affiliated Hospital of China Medical University, Shenyang, China
| | - Xiaodong Li
- Institute of Cancer Stem Cell, College of Basic Medical Science, Dalian Medical University, Dalian, China
| | - Bo Zhang
- Department of Neurosurgery, The Second Affiliated Hospital, Dalian Medical University, Dalian, China
- Department of Neurosurgery, The Shenzhen Luohu Hospital Group, The Third Affiliated Hospital of Shenzhen University, Shenzhen, China
- Neurosurgery Department of School of Medicine, The Chinese University of Hong Kong, Shenzhen, China
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Zhou H, Zhang Q, Huang W, He C, Zhou C, Zhou J, Ning Y. Epigenetic silencing of ZCCHC10 by the lncRNA SNHG1 promotes progression and venetoclax resistance of acute myeloid leukemia. Int J Oncol 2023; 62:64. [PMID: 37052262 PMCID: PMC10147099 DOI: 10.3892/ijo.2023.5512] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 04/04/2023] [Indexed: 04/14/2023] Open
Abstract
The gene encoding the tumor suppressor p53 is the most frequently mutated gene in cancers. However, p53 mutation is rare in acute myeloid leukemia (AML), and p53 is inactivated predominantly by aberrant expression of p53 regulators (such as MDM2). A previous study by the authors revealed that the ZCCHC10 protein suppressed MDM2‑mediated degradation of the p53 protein in lung cancer. However, the expression and role of the ZCCHC10 gene in AML have not been investigated. In the present study, it was found that ZCCHC10 expression was downregulated in bone marrow samples of AML patients and that ZCCHC10 expression was significantly and negatively correlated with the expression of the lncRNA SNHG1. Suppression of SNHG1 decreased ZCCHC10 promoter methylation and increased ZCCHC10 expression. Notably, there is a putative binding motif in SNHG1 with full complementarity to five sites surrounding the CpG island in the ZCCHC10 promoter. Overexpression of wild‑type SNHG1 promoted ZCCHC10 methylation, but overexpression of SNHG1 with deletion of the binding motif did not. Further study identified that SNHG1 simultaneously bound to the ZCCHC10 promoter and the DNA methyltransferases DNMT1 and DNMT3B. These results indicated that SNHG1 recruits DNMT1 and DNMT3B to the ZCCHC10 promoter, resulting in hypermethylation of the ZCCHC10 promoter. Kaplan‑Meier survival analysis showed that ZCCHC10 expression was positively associated with overall survival in AML patients. In vitro experiments demonstrated that ZCCHC10 increased p53 expression and suppressed AML cell proliferation and survival. In the xenograft mouse model, ZCCHC10 decreased the proliferation of leukemic cells, improved the survival of leukemic mice, and increased sensitivity to the BCL inhibitor venetoclax. In conclusion, ZCCHC10 expression is suppressed by SNHG1‑induced DNA methylation in AML. Downregulation of ZCCHC10 decreases p53 activation, promotes cell proliferation and survival, and thereby accelerates AML progression and the acquisition of venetoclax resistance. The present study identified a SNHG1/ZCCHC10/p53 signaling axis in AML that may be a therapeutic target in this malignancy.
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Affiliation(s)
- Hao Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Qing Zhang
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Wei Huang
- Chongzuo Key Laboratory of Biomedical Clinical Transformation, The People's Hospital of Chongzuo, Youjiang Medical University for Nationalities, Chongzuo, Guangxi Zhuang Autonomous Region 532200, P.R. China
| | - Chunping He
- Chongzuo Key Laboratory of Biomedical Clinical Transformation, The People's Hospital of Chongzuo, Youjiang Medical University for Nationalities, Chongzuo, Guangxi Zhuang Autonomous Region 532200, P.R. China
| | - Chang Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Jianlin Zhou
- State Key Laboratory of Developmental Biology of Freshwater Fish & Key Laboratory of Protein Chemistry and Developmental Biology of the Ministry of Education, College of Life Science, Hunan Normal University, Changsha, Hunan 410081, P.R. China
| | - Yichong Ning
- Chongzuo Key Laboratory of Biomedical Clinical Transformation, The People's Hospital of Chongzuo, Youjiang Medical University for Nationalities, Chongzuo, Guangxi Zhuang Autonomous Region 532200, P.R. China
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Gandhi S, Bhushan A, Shukla U, Pundir A, Singh S, Srivastava T. Downregulation of lncRNA SNHG1 in hypoxia and stem cells is associated with poor disease prognosis in gliomas. Cell Cycle 2023; 22:1135-1153. [PMID: 36945177 PMCID: PMC10081076 DOI: 10.1080/15384101.2023.2191411] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/15/2023] [Accepted: 03/12/2023] [Indexed: 03/23/2023] Open
Abstract
Gliomas are brain tumors associated with high morbidity, relapse and lethality despite improvement in therapeutic regimes. The hypoxic tumor microenvironment is a key feature associated with such poor outcomes in gliomas. The Hypoxia Inducible Factor (HIF) family of transcription factors are master regulators of cellular proliferation, high metabolic rates and angiogenesis via aberrant expression of downstream genes. Recent studies have implicated long non-coding RNAs (lncRNAs) as potential prognostic and diagnostic biomarkers. In this study, identification of hypoxia regulated lncRNA with a bioinformatic pipeline consisting of a newly developed tool "GenOx" was utilized for the identification of Hypoxia Response Element (HRE) and Hypoxia Ancillary Sequence (HAS) motifs in the promoter regions of lncRNAs. This was coupled with molecular, functional and interactome-based analyses of these hypoxia-relevant lncRNAs in primary tumors and cell-line models. We report on the identification of novel hypoxia regulated lncRNAs SNHG12, CASC7 and MF12-AS1. A strong association of RNA splicing mechanisms was observed with enriched lncRNAs. Several lncRNAs have emerged as prognostic biomarkers, of which TP53TG1 and SNHG1 were identified as highly relevant lncRNAs in glioma progression and validated in hypoxia cultured cells. Significantly, we determined that SNHG1 expression in tumor (vs. normal) is different from glioma stem cells, GSC (vs. tumors) and in hypoxia (vs. normoxia), positioning downregulation of SNHG1 to be associated with worsened prognosis.
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Affiliation(s)
- Sanchit Gandhi
- Department of Genetics, University of Delhi South Campus, New Delhi, India
| | - Ashish Bhushan
- Department of Genetics, University of Delhi South Campus, New Delhi, India
| | - Unmesh Shukla
- Institute of Informatics and Communication, University of Delhi South Campus, New Delhi, India
| | - Amit Pundir
- Department of Electronics, Maharaja Agrasen College, University of Delhi, Delhi, India
| | - Sanjeev Singh
- Institute of Informatics and Communication, University of Delhi South Campus, New Delhi, India
| | - Tapasya Srivastava
- Department of Genetics, University of Delhi South Campus, New Delhi, India
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Attia MS, Ewida HA, Abdel Hafez MA, El-Maraghy SA, El-Sawalhi MM. Altered Lnc-EGFR, SNHG1, and LincRNA-Cox2 Profiles in Patients with Relapsing-Remitting Multiple Sclerosis: Impact on Disease Activity and Progression. Diagnostics (Basel) 2023; 13:diagnostics13081448. [PMID: 37189549 DOI: 10.3390/diagnostics13081448] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/12/2023] [Accepted: 04/12/2023] [Indexed: 05/17/2023] Open
Abstract
Relapsing-remitting multiple sclerosis (RRMS) is the most prevalent MS subtype. Ample evidence has indicated that long noncoding RNAs (lncRNAs) are crucial players in autoimmune and inflammatory disorders. This study investigated the expression of lnc-EGFR, SNHG1, and lincRNA-Cox2 in RRMS patients during active relapses and in remission. Additionally, the expression of FOXP3, a master transcription factor for regulatory T cells, and NLRP3-inflammasome-related genes were determined. Relationships between these parameters and MS activity and annualized relapse rate (ARR) were also evaluated. The study included 100 Egyptian participants: 70 RRMS patients (35 during relapse and 35 in remission) and 30 healthy controls. RRMS patients showed significant downregulation of lnc-EGFR and FOXP3 and dramatic upregulation of SNHG1, lincRNA-Cox2, NLRP3, ASC, and caspase-1 compared to controls. Lower serum TGF-β1 and elevated IL-1β levels were observed in RRMS patients. Notably, patients during relapses displayed more significant alterations than those in remission. Lnc-EGFR was positively correlated with FOXP3 and TGF-β1 and negatively correlated with ARR, SNHG1, lincRNA-Cox2, and NLRP3 inflammasome components. Meanwhile, SNHG1 and lincRNA-Cox2 were positively correlated with ARR, NLRP3, ASC, caspase-1, and IL-1β. Excellent diagnostic performance for lnc-EGFR, FOXP3, and TGF-β1 was demonstrated, while all biomarkers exhibited strong prognostic potential for predicting relapses. Finally, the differential expression of lnc-EGFR, SNHG1, and lincRNA-Cox2 in RRMS patients, especially during relapses, suggests their involvement in RRMS pathogenesis and activity. Correlation between their expression and ARR implies relationships to disease progression. Our findings also highlight their promising roles as biomarkers for RRMS.
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Affiliation(s)
- Mohamed S Attia
- Pharmacology, Toxicology and Biochemistry Department, Faculty of Pharmacy, Future University in Egypt (FUE), Cairo 11835, Egypt
| | - Heba A Ewida
- Pharmacology, Toxicology and Biochemistry Department, Faculty of Pharmacy, Future University in Egypt (FUE), Cairo 11835, Egypt
| | | | - Shohda A El-Maraghy
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Maha M El-Sawalhi
- Biochemistry Department, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
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Zhu W, Luo L, Ye G, Ou J. Potential diagnostic value of N1LR and SNHG1 in acute myocardial infarction. BMC Med Genomics 2023; 16:71. [PMID: 37013574 PMCID: PMC10071696 DOI: 10.1186/s12920-023-01501-2] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 03/25/2023] [Indexed: 04/05/2023] Open
Abstract
INTRODUCTION Acute myocardial infarction (AMI) is a common cardiovascular disease that can lead to myocardial necrosis and a poor prognosis. Clinical practice requires an accurate and quick diagnosis of AMI due to the inherent limitations of current biomarkers. Therefore, research into novel biomarkers is necessary. We aimed to explore the diagnostic potency of the long non-coding RNA (lncRNA) N1LR and SNHG1 in patients diagnosed with AMI. METHOD We measured lncRNA levels in 148 AMI patients and 50 healthy volunteers with quantitative RT-PCR method. Receiver operating characteristic (ROC) analysis was administered to detect the diagnostic power of selected lncRNAs. Correlation analysis was performed to explore the relationship between N1LR as well as SNHG1 and the conventional myocardial biomarkers (LDH, CK, CKMB and cTnI). RESULTS ROC analysis reveals the possibility of N1LR and SNHG1 as biomarkers in AMI diagnosis (AUC of N1LR: 0.873; AUC of SNHG1: 0.890). Correlation analysis revealed that N1LR was negatively correlated with the conventional biomarkers and SNHG1 was positively correlated with the conventional biomarkers. CONCLUSION For the first time, we investigated the potential predictive diagnostic value of N1LR and SNHG1 in AMI diagnosis and substantial outcomes were obtained. Also, they may be capable of reflecting the progress of the disease during clinical practice from the correlation analysis.
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Affiliation(s)
- Wei Zhu
- Internal Medicine, Cardiovascular Center, Yangjiang People's Hospital, Guangdong, China
| | - Li Luo
- Internal Medicine, Cardiovascular Center, Yangjiang People's Hospital, Guangdong, China
| | - Guangning Ye
- Internal Medicine, Cardiovascular Center, Yangjiang People's Hospital, Guangdong, China
| | - Jiaman Ou
- Internal Medicine, Cardiovascular Center, Yangjiang People's Hospital, Guangdong, China.
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Wang Q, Deng F, Li J, Guo L, Li K. The long non-coding RNA SNHG1 attenuates chondrocyte apoptosis and inflammation via the miR-195/IKK-α axis. Cell Tissue Bank 2023; 24:167-80. [PMID: 35796880 DOI: 10.1007/s10561-022-10019-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2022] [Indexed: 11/02/2022]
Abstract
Multiple studies have suggested that long non-coding RNAs (lncRNAs) are involved in the development and progression of osteoarthritis (OA). However, how lncRNA SNHG1 regulates OA remains unknown. This study aimed to explore how SNHG1 regulates chondrocyte apoptosis and inflammation. Our data showed that H2O2-treated chondrocytes exhibited lower expression of SNHG1 and secreted higher levels of IL-6, IL-8, and TNF-α than untreated cells. Further, overexpressing SNHG1 reduced chondrocyte apoptosis and production of inflammatory factors. Additionally, SNHG1 targets miR-195 directly, and IKK-α has direct biding sites for miR-195. Of note, IKK-α acts as an inhibitor of the NF-κB signaling pathway. These findings suggest that SNHG1 can upregulate IKK-α by inhibiting miR-195 and thus, inhibit NF-κB activity. Our in vivo experiments validate our in vitro findings. Thus, under oxidative stress, SNHG1 inhibits the activation of NF-κB to attenuate chondrocyte apoptosis and inflammation via the miR-195/IKK-α axis. Targeting SNHG1 may serve as a potential novel therapeutic approach for OA.
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Nie Z, Zhang K, Li Z, Bing X, Jin S, Li M. Human papillomavirus 16 E6 promotes angiogenesis of lung cancer via SNHG1. Cell Biochem Biophys 2023. [PMID: 36690880 DOI: 10.1007/s12013-022-01121-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Accepted: 11/18/2022] [Indexed: 01/25/2023]
Abstract
Human papillomavirus (HPV) is a risk factor for lung cancer. However, the underlying mechanisms are not known. Long noncoding RNAs (lncRNAs) have been found to play an important role in the occurrence and development of lung cancer due to their particular characteristics. HPV-induced lung carcinogenesis is incompletely defined. We aimed to screen and clarify the functions of lncRNAs that are differentially expressed in HPV-related lung cancer. We found that lncRNA SNHG1 is upregulated in lung cancer cells infected with HPV16 E6 by qRT‒PCR. Further results demonstrated that SNHG1 overexpression facilitates the tube formation of human umbilical vein endothelial cells (HUVECs) in vitro. Our results also indicated that SNHG1 might function in lung cancer by binding with EGFR. Further studies revealed that SNHG1 overexpression could activate the nuclear factor κb (NF-κB) pathway, which increases the expression of interleukin-6 (IL-6). We also found that IL-6 can activate the STAT3 pathway, which promotes VEGF-D expression. These results expanded our understanding of SNHG1 as a new avenue for therapeutic intervention against lung cancer progression. Upregulation of SNHG1 by HPV infection might be an undefined link between lung cancer and HPV.
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Liu L, Peng Y, Liu W, Xu J, Li D, Li X. GATA-binding protein 4 promotes neuroinflammation and cognitive impairment in Aβ 1-42 fibril-infused rats through small nucleolar RNA host gene 1/miR-361-3p axis. CHINESE J PHYSIOL 2023; 66:14-20. [PMID: 36814152 DOI: 10.4103/cjop.cjop-d-22-00057] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023] Open
Abstract
Aging with dysregulated metabolic and immune homeostasis stimulates pyroptosis, neuroinflammation, and cellular senescence, thus contributing to etiopathogenesis of Alzheimer's disease. GATA-binding protein 4 (GATA4) functions as a transcriptional factor in response to DNA damage, and is associated with neuroinflammation and cellular senescence. The role of GATA4 in Alzheimer's disease was investigated. GATA4 was elevated in hippocampus of Aβ1-42 fibril-infused rats. Injection with shRNA targeting GATA4 reduced escape latency with increase of time in target quadrant and number of platform crossings in Aβ1-42 fibril-infused rats. Moreover, knockdown of GATA4 ameliorated morphological changes of hippocampus and reduced amyloid plaque deposition in Aβ1-42 fibril-infused rats. Silence of GATA4 repressed neuroinflammation and apoptosis in Aβ1-42 fibril-infused rats. Loss of GATA4 in Aβ1-42 fibril-infused rats reduced the expression of specificity protein 1 (Sp1) to downregulate long noncoding RNA small nucleolar RNA host gene 1 (SNHG1) and upregulated miR-361-3p. Loss of SNHG1 ameliorated learning and memory impairments in Aβ1-42 fibril-infused rats. Overexpression of Sp1 attenuated GATA4 silence-induced decrease of escape latency, increase of time in target quadrant, and number of platform crossings in Aβ1-42 fibril-infused rats. In conclusion, silence of GATA4 ameliorated cognitive dysfunction and inhibited hippocampal inflammation and cell apoptosis through regulation of Sp1/SNHG1/miR-361-3p.
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Affiliation(s)
- Lidan Liu
- Department of Internal Medicine-Neurology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Yanhui Peng
- Department of Internal Medicine-Neurology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Wenping Liu
- Department of Internal Medicine-Neurology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jiajun Xu
- Department of Internal Medicine-Neurology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Dali Li
- Department of Internal Medicine-Neurology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiuwen Li
- Department of Rheumatology and Immunology, The Sixth Affiliated Hospital of Xinjiang Medical University, Urumqi, China
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Akbari M, Eshghyar F, Gholipour M, Eslami S, Hussen BM, Taheri M, Omrani MD, Ghafouri-Fard S. Expression analysis of mTOR-associated lncRNAs in multiple sclerosis. Metab Brain Dis 2022; 37:2061-2066. [PMID: 35622264 DOI: 10.1007/s11011-022-01010-8] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/16/2022] [Indexed: 10/18/2022]
Abstract
mTOR has been shown to be involved in the regulation of immune responses and differentiation of immune cells. This protein is a candidate molecule for unraveling the molecular mechanisms of autoimmune disorders such as multiple sclerosis (MS). We designed the current study to assess expression of MTOR, and four associated long non-coding RNAs (lncRNAs), namely SNHG1, SNHG3, SHNG5 and DANCR in the peripheral blood of patients with MS compared with healthy controls. Analysis of real-time PCR results has shown down-regulation of SNHG5 and DANCR in MS patients compared with controls. Sex of study participants had no significant effect on expression of either genes and the interaction of sex and disease on expression levels of all studied genes were insignificant. There was a significant negative correlation between expression levels of MTOR gene and disease duration. No other significant correlations were detected between genes expressions and clinical/demographic data. SNHG5 and DANCR transcript levels had AUC values of 0.88 and 0.68 in separation of patients with MS from healthy controls, respectively. Taken together, our study suggests participation of two mTOR-related lncRNAs, i.e. SNHG5 and DANCR in the pathophysiology of MS.
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Affiliation(s)
- Mohammadarian Akbari
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Eshghyar
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahdi Gholipour
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Solat Eslami
- Department of Medical Biotechnology, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran
- Dietary Supplements and Probiotic Research Center, Alborz University of Medical Sciences, Karaj, Iran
| | - Bashdar Mahmud Hussen
- Department of Pharmacognosy, College of Pharmacy, Hawler Medical University, Kurdistan Region, Erbil, Iraq
- Center of Research and Strategic Studies, Lebanese French University, Erbil, Kurdistan Region, Iraq
| | - Mohammad Taheri
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
- Institute of Human Genetics, Jena University Hospital, Jena, Germany.
| | - Mir Davood Omrani
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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25
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Sun Q, Gong J, Wu J, Hu Z, Zhang Q, Zhu X. SNHG1-miR-186-5p-YY1 feedback loop alleviates hepatic ischemia/reperfusion injury. Cell Cycle 2022; 21:1267-1279. [PMID: 35275048 PMCID: PMC9132488 DOI: 10.1080/15384101.2022.2046984] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2021] [Revised: 06/20/2021] [Accepted: 02/23/2022] [Indexed: 11/03/2022] Open
Abstract
As a common cause of liver injury, hepatic ischemia/reperfusion injury (HIRI) happens in various clinical conditions including trauma, hepatectomy and liver transplantation. Since transcription factor Yin Yang 1 (YY1) was reported to be downregulated after ischemia/reperfusion (I/R) injury, we focused on YY1 to explore its function in HIRI by functional assays like Cell Counting Kit-8 (CCK-8) assays and flow cytometry assays. The RT-qPCR assay revealed that YY1 was downregulated in hepatocytes after I/R injury. The function assays disclosed that YY1 facilitated cell viability and proliferation, but hindered cell apoptosis in hepatocytes after I/R injury. Through mechanism assays including luciferase reporter assay, RIP and RNA pulldown assay, miR-186-5p was found to bind with YY1 and promote hepatocyte apoptosis by targeting YY1. Subsequently, we verified that small nucleolar RNA host gene 1 (SNHG1) could sponge miR-186-5p to upregulate YY1. Importantly, we figured out that YY1 had a positive regulation on SNHG1. Along the way, YY1 was identified as the upstream transcription factor for SNHG1. In conclusion, our study unveiled a novel competing endogenous RNA (ceRNA) pattern of SNHG1/miR-186-5p/YY1 positive feedback loop in hepatic I/R injury, which might provide new insight into prevention of HIRI during liver transplantation or hepatic surgery.
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Affiliation(s)
- Qiang Sun
- General Surgery Department 1, Zhongshan Hospital, Sun Yat-sen University, Zhongshan, Guangdong, China
| | - Jinlong Gong
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
| | - Jianlong Wu
- General Surgery Department 1, Zhongshan Hospital, Sun Yat-sen University, Zhongshan, Guangdong, China
| | - Zhipeng Hu
- General Surgery Department 1, Zhongshan Hospital, Sun Yat-sen University, Zhongshan, Guangdong, China
| | - Qiao Zhang
- General Surgery Department 1, Zhongshan Hospital, Sun Yat-sen University, Zhongshan, Guangdong, China
| | - Xiaofeng Zhu
- Organ Transplant Center, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
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Jia Y, Chen X, Zhao D, Ma S. SNHG1/miR-194-5p/MTFR1 Axis Promotes TGFβ1-Induced EMT, Migration and Invasion of Tongue Squamous Cell Carcinoma Cells. Mol Biotechnol 2022; 64:780-790. [PMID: 35107755 DOI: 10.1007/s12033-021-00445-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 07/21/2021] [Accepted: 12/28/2021] [Indexed: 12/24/2022]
Abstract
Tongue squamous cell carcinoma (TSCC) is a common malignancy with aggressive biological behaviors. Mitochondrial fission regulator 1 (MTFR1), is aberrantly expressed in head and neck squamous cell carcinoma (HNSC), but its role in TSCC remains unclear. We aimed to explore the role of MTFR1 in TSCC. The expression of long non-coding RNA small nucleolar RNA host gene 1 (SNHG1), microRNA-194-5p and MTFR1 in TSCC cells was measured by RT-qPCR. Luciferase reporter assay and RNA pull down assay were applied to confirm the binding capacity between miR-194-5p and SNHG1 (or MTFR1). TSCC cell invasion and migration were accessed by Transwell assays. The protein levels of MTFR1 and epithelial-mesenchymal transition (EMT) markers were examined by western blot. MTFR1 had high expression level in TSCC. MTFR1 knockdown inhibited transforming growth factor β1 (TGFβ1)-induced EMT, migration and invasion of TSCC cells in vitro. MiR-194-5p targeted MTFR1 and negatively regulated its expression. In addition, SNHG1 upregulated the expression of MTFR1 by binding with miR-194-5p. Importantly, SNHG1 promoted EMT, invasion and migration of TSCC cells by upregulating MTFR1. SNHG1/miR-194-5p/MTFR1 axis promotes TGFβ1-induced EMT, migration and invasion of cells in TSCC, which could be potential targets for treating TSCC patients.
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Affiliation(s)
- Yonglu Jia
- Department of Stomotology, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, No. 118 Wansheng Street, Suzhou Industrial Park, Suzhou, 215028, Jiangsu, China
| | - Xiaojuan Chen
- Department of Stomotology, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, No. 118 Wansheng Street, Suzhou Industrial Park, Suzhou, 215028, Jiangsu, China
| | - Dayong Zhao
- Department of Stomotology, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, No. 118 Wansheng Street, Suzhou Industrial Park, Suzhou, 215028, Jiangsu, China
| | - Sancheng Ma
- Department of Stomotology, Suzhou Kowloon Hospital, Shanghai Jiaotong University School of Medicine, No. 118 Wansheng Street, Suzhou Industrial Park, Suzhou, 215028, Jiangsu, China.
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Mu W, Guo L, Liu Y, Yang H, Ning S, Lv G. Long Noncoding RNA SNHG1 Regulates LMNB2 Expression by Sponging miR-326 and Promotes Cancer Growth in Hepatocellular Carcinoma. Front Oncol 2021; 11:784067. [PMID: 34917510 PMCID: PMC8670182 DOI: 10.3389/fonc.2021.784067] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 11/09/2021] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVE The purpose of the study is to explore the potential competing endogenous RNA (ceRNA) network and investigate the molecular mechanism of long noncoding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) in hepatocellular carcinoma (HCC) development. METHODS By analyzing the data of HCC in The Cancer Genome Atlas (TCGA) database, we included differentially expressed lncRNA and microRNA (miRNA) profiles and constructed ceRNA networks related to the prognosis of HCC patients. qRT-PCR, Western blotting, 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT), transwell assay, and the nude mouse model were employed to test the effects of SNHG1 and LMNB2 on tumor proliferation and growth in vitro and in vivo. RESULTS In the study, we identified 115 messenger RNAs (mRNAs), 12 lncRNAs, and 37 miRNAs by intersecting differentially expressed genes (DEGs) in TCGA and StarBase databases. Then, SNHG1-miR-326-LMNB2 pathway came into notice after further survival analysis and hub gene screening. Our results showed that SNHG1 expression was upregulated significantly in HCC tissues and cell lines. Downregulation of both LMNB2, the target of miR-326 in HCC, and SNHG1 inhibited tumor proliferation and growth in vitro and in vivo. Furthermore, SNHG1 could regulate LMNB2 expression through binding to miR-326 in HCC cell lines. CONCLUSION SNHG1 is a promising prognostic factor in HCC, and the SNHG1-miR-326-LMNB2 axis may be a potential therapeutic target for HCC.
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Affiliation(s)
- Wentao Mu
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, China
- Department of Hepatobiliary Surgery, General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Lingyu Guo
- Department of Urology, Second Affiliated Hospital of Xi’an Jiaotong University, Xi'an, China
| | - Yang Liu
- Department of Hepatobiliary Surgery, Taian City Central Hospital of Shandong Province, Tai'an, China
| | - Hui Yang
- Department of Colorectal and Anal Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan, China
| | - Shanglei Ning
- Department of Hepatobiliary Surgery, General Surgery, Qilu Hospital of Shandong University, Jinan, China
| | - Guoyue Lv
- Department of Hepatobiliary and Pancreatic Surgery, The First Hospital of Jilin University, Changchun, China
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28
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Jiang X, Yuan Y, Tang L, Wang J, Liu Q, Zou X, Duan L. Comprehensive Pan-Cancer Analysis of the Prognostic and Immunological Roles of the METTL3/lncRNA- SNHG1/miRNA-140-3p/UBE2C Axis. Front Cell Dev Biol 2021; 9:765772. [PMID: 34858987 PMCID: PMC8631498 DOI: 10.3389/fcell.2021.765772] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Accepted: 10/15/2021] [Indexed: 01/01/2023] Open
Abstract
Growing evidence has demonstrated that UBE2C plays a critical role in cancer progression, but there is no study focusing on the prognosis, upstream regulation mechanism, and immunological roles of UBE2C across diverse tumor types. In this study, we found that UBE2C was elevated in this human pan-cancer analysis, and high expression of UBE2C was correlated with poor prognosis. In addition, UBE2C expression was markedly associated with tumor mutation burden (TMB), microsatellite instability (MSI), immune cell infiltration, and diverse drug sensitivities. Finally, we showed that the METTL3/SNHG1/miRNA-140-3p axis could potentially regulate UBE2C expression. N(6)-Methyladenosine (m6A) modifications improved the stability of methylated SNHG1 transcripts by decreasing the rate of RNA degradation, which lead to upregulation of SNHG1 in non-small cell lung cancer (NSCLC). In vitro functional experiments showed that SNHG1, as a competing endogenous RNA, sponges miR-140-3p to increase UBE2C expression in NSCLC cell lines. Our study elucidates the clinical importance and regulatory mechanism of the METTL3/SNHG1/miRNA-140-3p/UBE2C axis in NSCLC and provides a prognostic indicator, as well as a promising therapeutic target for patients with NSCLC.
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Affiliation(s)
- Xiulin Jiang
- Key Laboratory of Animal Models and Human Disease Mechanisms of Chinese Academy of Sciences and Yunnan Province, Kunming Institute of Zoology, Kunming, China
| | - Yixiao Yuan
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lin Tang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Juan Wang
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Qianqian Liu
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Xiaolan Zou
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Lincan Duan
- Department of Thoracic Surgery, The Third Affiliated Hospital of Kunming Medical University, Kunming, China
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Asadi MR, Hassani M, Kiani S, Sabaie H, Moslehian MS, Kazemi M, Ghafouri-Fard S, Taheri M, Rezazadeh M. The Perspective of Dysregulated LncRNAs in Alzheimer's Disease: A Systematic Scoping Review. Front Aging Neurosci 2021; 13:709568. [PMID: 34621163 PMCID: PMC8490871 DOI: 10.3389/fnagi.2021.709568] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 05/14/2021] [Accepted: 08/12/2021] [Indexed: 12/22/2022] Open
Abstract
LncRNAs act as part of non-coding RNAs at high levels of complex and stimulatory configurations in basic molecular mechanisms. Their extensive regulatory activity in the CNS continues on a small scale, from the functions of synapses to large-scale neurodevelopment and cognitive functions, aging, and can be seen in both health and disease situations. One of the vast consequences of the pathological role of dysregulated lncRNAs in the CNS due to their role in a network of regulatory pathways can be manifested in Alzheimer's as a neurodegenerative disease. The disease is characterized by two main hallmarks: amyloid plaques due to the accumulation of β-amyloid components and neurofibrillary tangles (NFT) resulting from the accumulation of phosphorylated tau. Numerous studies in humans, animal models, and various cell lines have revealed the role of lncRNAs in the pathogenesis of Alzheimer's disease. This scoping review was performed with a six-step strategy and based on the Prisma guideline by systematically searching the publications of seven databases. Out of 1,591 records, 69 articles were utterly aligned with the specified inclusion criteria and were summarized in the relevant table. Most of the studies were devoted to BACE1-AS, NEAT1, MALAT1, and SNHG1 lncRNAs, respectively, and about one-third of the studies investigated a unique lncRNA. About 56% of the studies reported up-regulation, and 7% reported down-regulation of lncRNAs expressions. Overall, this study was conducted to investigate the association between lncRNAs and Alzheimer's disease to make a reputable source for further studies and find more molecular therapeutic goals for this disease.
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Affiliation(s)
- Mohammad Reza Asadi
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehdi Hassani
- Student Research Committee, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Shiva Kiani
- Department of Molecular Genetics, School of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Hani Sabaie
- Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Marziyeh Sadat Moslehian
- Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Kazemi
- Department of Social Medicine, Zanjan University of Medical Sciences, Zanjan, Iran
| | - Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Rezazadeh
- Molecular Medicine Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Medical Genetics, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
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30
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Gao Y, Zhang N, Lv C, Li N, Li X, Li W. lncRNA SNHG1 Knockdown Alleviates Amyloid-β-Induced Neuronal Injury by Regulating ZNF217 via Sponging miR-361-3p in Alzheimer's Disease. J Alzheimers Dis 2021; 77:85-98. [PMID: 32741808 DOI: 10.3233/jad-191303] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
BACKGROUND Long noncoding RNAs have been proven to play an important role in the progression of Alzheimer's disease (AD). However, the function of small nucleolar RNA host gene 1 (SNHG1) in AD progression remains to be studied. OBJECTIVE To explore the role of SNHG1 in AD progression and clarify its potential mechanism. METHODS Amyloid β-protein (Aβ) was used to construct an AD cell model in vitro. The expression levels of SNHG1 and miR-361-3p were determined by quantitative real-time polymerase chain reaction. Cell viability and apoptosis were measured by cell counting kit 8 assay and flow cytometry. The levels of apoptosis-related proteins and zinc finger gene 217 (ZNF217) protein were evaluated by western blot analysis. Additionally, the contents of inflammatory cytokines and oxidative stress markers were tested by enzyme-linked immunosorbent assay. Furthermore, dual-luciferase reporter and RNA immunoprecipitation assays were used to verify the interaction between miR-361-3p and SNHG1 or ZNF217. RESULTS Aβ could induce cell injury, while resveratrol could reverse this effect. SNHG1 expression was positively regulated by Aβ and negatively regulated by resveratrol. SNHG1 knockdown could reverse the promotion effect of Aβ on cell injury. Moreover, SNHG1 sponged miR-361-3p, and miR-361-3p targeted ZNF217. Additionally, miR-361-3p overexpression reversed the promotion effect of SNHG1 overexpression on cell injury, and ZNF217 silencing also reversed the promotion effect of miR-361-3p inhibitor on cell injury. CONCLUSION SNHG1 promoted cell injury by regulating the miR-361-3p/ZNF217 axis, which might provide a theoretical basis for molecular therapy of AD.
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Affiliation(s)
- Yiwen Gao
- Department of Pharmacy, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
| | - Nan Zhang
- Department of Geriatrics, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
| | - Chunmei Lv
- Department of Pharmacy, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
| | - Na Li
- Department of Rehabilitation, The People's Hospital of Qingdao Shinan District, Qingdao, Shandong, China
| | - Xueqin Li
- Department of Pharmacy, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
| | - Weiwei Li
- Department of Neurology, Yantai Affiliated Hospital of Binzhou Medical University, Yantai, Shandong, China
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31
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Zhang C, Yuan S, Chen Y, Wang B. Neohesperidin promotes the osteogenic differentiation of human bone marrow stromal cells by inhibiting the histone modifications of lncRNA SNHG1. Cell Cycle 2021; 20:1953-1966. [PMID: 34455928 DOI: 10.1080/15384101.2021.1969202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Neohesperidin (NH) was reported to regulate osteoclastic differentiation, while LncRNA SNHG1 could inhibit osteogenic differentiation of bone marrow stromal cells (BMSCs). In this study, we aimed to explore whether SNHG1-mediated osteogenic differentiation could be regulated by NH. Osteonecrosis and adjacent tissues, as well as normal bone marrow samples were gathered. BMSCs were isolated from normal bone marrow samples by Ficoll density gradient and identified by flow cytometry. Histopathological changes of tissues were detected by hematoxylin-eosin staining. After the treatment with NH or transfection, cell viability, osteogenic differentiation, and the activity of alkaline phosphatase (ALP) in BMSCs were detected by MTT, alizarin red staining, and microplate method, respectively. The histone modification and expressions of SNHG1 and osteogenic marker genes in tissues or BMSCs were detected by q-PCR and Chromatin Immunoprecipitation (ChIp). SNHG1 was highly expressed in osteonecrosis tissues, and typical signs of empty lacunae appeared in the necrotic tissues zone. NH increased viability and osteogenic differentiation of BMSCs, activity of ALP, and expressions of RUNX2, OCN and ALP. NH decreased both SNHG1 expression and H3K4me3 (activating histone modification) occupancies and increased H3K27me3 (inhibiting histone modification) occupancies of SNHG1. Furthermore, siSNHG1 enhanced osteogenic differentiation of BMSCs and expressions of RUNX2, OCN and ALP, while SNHG1 overexpression did the opposite and reversed the effects of NH on the osteogenic differentiation of BMSCs. In a word, NH promotes the osteogenic differentiation of human BMSCs by inhibiting the histone modifications of lncRNA SNHG1.
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Affiliation(s)
- Chuanxin Zhang
- Department of Orthopedics, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Shuai Yuan
- Department of Orthopedics, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Yi Chen
- Department of Orthopedics, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Bo Wang
- Department of Orthopedics, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
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Kang Y, Wan L, Wang Q, Yin Y, Liu J, Liu L, Wu H, Zhang L, Zhang X, Xu S, Pang D. Long noncoding RNA SNHG1 promotes TERT expression by sponging miR-18b-5p in breast cancer. Cell Biosci 2021; 11:169. [PMID: 34465388 PMCID: PMC8407068 DOI: 10.1186/s13578-021-00675-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [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: 02/27/2021] [Accepted: 08/03/2021] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Long noncoding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) plays a positive role in the progression of human malignant tumors. However, the molecular mechanism of SNHG1 remains elusive in breast cancer. RESULTS LncRNA SNHG1 was upregulated and had a positive relationship with poor prognosis according to bioinformatics analysis in pan-cancer including breast cancer. Silencing SNHG1 inhibited tumorigenesis in breast cancer both in vitro and in vivo. Mechanistically, SNHG1 functioned as a competing endogenous RNA (ceRNA) to promote TERT expression by sponging miR-18b-5p in breast cancer. miR-18b-5p acted as a tumor repressor in breast cancer. Moreover, the combination of SNHG1 knockdown and TERT inhibitor administration showed a synergistic inhibitory effect on breast cancer growth in vivo. Finally, E2F1 as a transcription factor, binding to SNHG1 promoter and enhanced SNHG1 transcription in breast cancer. CONCLUSIONS Our results provide a comprehensive understanding of the oncogenic mechanism of lncRNA SNHG1 in breast cancer. Importantly, we identified a novel E2F1-SNHG1-miR-18b-5p-TERT axis, which may be a potential therapeutic target for breast cancer. Our results also provided a potential treatment for breast cancer when knockdown SNHG1 and TERT inhibitor administration simultaneously.
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Affiliation(s)
- Yujuan Kang
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Lin Wan
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Qin Wang
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Yanling Yin
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Jiena Liu
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Lei Liu
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Hao Wu
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Lei Zhang
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Xin Zhang
- grid.412651.50000 0004 1808 3502Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040 China
| | - Shouping Xu
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040, China.
| | - Da Pang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, 150040, China. .,Heilongjiang Academy of Medical Sciences, Harbin, China.
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Tang Q, Li Z, Han W, Cheng S, Wang Y. High expression of lncRNA SNHG1 in prostate cancer patients and inhibition of SNHG1 suppresses cell proliferation and promotes apoptosis. INDIAN J PATHOL MICR 2021; 63:575-580. [PMID: 33154308 DOI: 10.4103/ijpm.ijpm_612_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Objective This study aimed to investigate the expression of long non-coding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) in prostate cancer (PCa) patients and to assess the effects of SNHG1 on PCa cell proliferation and apoptosis. Materials and Methods A total of 134 PCa patients were randomly included from patients who underwent surgical resection at our hospital from October 2015 to December 2016. The SNHG1 expression levels in PCa tissues and paired adjacent non-cancerous tissues were detected by quantitative reverse transcription polymerase chain reaction (qRT-PCR). The association of the SNHG1 expression with clinical-pathological features of PCa patients was summarized and evaluated. A short interfering (si) RNA targeting SNHG1 and pcDNA3.1-SNHG1 were transfected into PC3 and DU145 PCa cell lines, and transfection efficiency was verified by qRT-PCR. Cell proliferation and apoptosis were assessed by methylthiazolyldiphenyl-tetrazolium bromide (MTT) and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assays, respectively. Results The SNHG1 expression was significantly upregulated in PCa tumor tissues compared with paired adjacent non-cancerous tissues. The SNHG1 expression was obviously associated with the TNM stage, Gleason Score, lymph node invasion, and long-term metastasis mortality rate. Silencing of SNHG1 inhibited cell proliferation and promoted apoptosis in PC3 and DU145 PCa cell lines in vitro, while overexpression of SNHG1 led to opposite results. Conclusion LncRNA SNHG1 was upregulated and associated with aggressive malignant behavior in PCa progression. SNHG1 might serve as a potential prognostic biomarker and potential therapeutic target for PCa.
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Affiliation(s)
- Qi Tang
- Department of Urology, The Second Affiliated Hospital, University of South China; Department of Urology, The Third People's Hospital of Yongzhou City, Hunan, China
| | - Zhen Li
- Department of Urinary Surgery, Hospital of Xi'an, Xi'an China, China
| | - Weijun Han
- Department of Urinary Surgery, Tongren Hospital of Shanhai, Shanghai, China
| | - Shujie Cheng
- Department of Surgery, Bao Ji Tr aditional Chinese Medicine Hospital of Baoji, Baoji, Shannxi, China
| | - Yi Wang
- Department of Urology, The Second Affiliated Hospital, University of South China, Hunan, China
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Wang S, Han H, Meng J, Yang W, Lv Y, Wen X. Long non-coding RNA SNHG1 suppresses cell migration and invasion and upregulates SOCS2 in human gastric carcinoma. Biochem Biophys Rep 2021; 27:101052. [PMID: 34179518 PMCID: PMC8214191 DOI: 10.1016/j.bbrep.2021.101052] [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: 01/18/2021] [Revised: 05/30/2021] [Accepted: 06/07/2021] [Indexed: 11/23/2022] Open
Abstract
Gastric carcinoma (GC) is one of the most common malignancies and the third leading cause of cancer-related deaths worldwide. Long noncoding RNAs (lncRNAs) may be an important class of functional regulators involved in human gastric cancers development. In this study, we investigated the clinical significance and function of lncRNA SNHG1 in GC. SNHG1 was significantly downregulated in GC tumor tissues compared with adjacent noncancerous tissues. Overexpression of SNHG1 in BGC-823 cells remarkably inhibited not only cell proliferation, migration, invasion in vitro, but also tumorigenesis and lung metastasis in the chick embryo chorioallantoic membrane (CAM) assay in vivo. Conversely, inhibition of SNHG1 by transfection of siRNA in AGS cells resulted in opposite phenotype changes. Mechanically, SNHG1 was found interacted with ILF3, NONO and SFPQ. RNA-seq combined with bioinformatic analysis identified a serial of downstream genes of SNHG1, including SOCS2, LOXL2, LTBP3, LTBP4. Overexpression of SNHG1 induced SOCS2 expression whereas knockdown of SNHG1 decreased SOCS2 expression. In addition, knockdown of SNHG1 promoted the activation of JAK2/STAT signaling pathway. Taken together, our data suggested that SNHG1 suppressed aggressive phenotype of GC cells and regulated SOCS2/JAK2/STAT pathway. SNHG1 was significantly downregulated in GC tumor tissues. SNHG1 suppressed proliferation and migration of GC cells. SNHG1 localized in nucleus of GC cells and interacted with ILF3, NONO and SFPQ. SNHG1 regulate SOCS2 expression in GC cell lines and JAK2/STAT signaling pathway in AGS cells.
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Affiliation(s)
- Shanshan Wang
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Haibo Han
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Junling Meng
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Wei Yang
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Yunwei Lv
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
| | - Xianzi Wen
- Department of Clinical Laboratory, Key Laboratory of Carcinogenesis and Translational Research, Ministry of Education, Beijing, China
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Guo C, Li X, Xie J, Liu D, Geng J, Ye L, Yan Y, Yao X, Luo M. Long Noncoding RNA SNHG1 Activates Autophagy and Promotes Cell Invasion in Bladder Cancer. Front Oncol 2021; 11:660551. [PMID: 34055628 PMCID: PMC8158816 DOI: 10.3389/fonc.2021.660551] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 01/29/2021] [Accepted: 04/26/2021] [Indexed: 12/19/2022] Open
Abstract
LncRNAs play important roles in bladder cancer. However, only a few studies report on the correlation between lncRNAs expression and autophagy in bladder cancer. This study aimed to explore the effect of lncRNA on autophagy in bladder cancer. The findings showed high expression of SNHG1 in the bladder cancer cells and tumor tissues. The high expression of SNHG1 was positively correlated with bladder cancer cell invasion, proliferation, and autophagy. This finding implies that SNHG1 promotes bladder cancer cell invasion and proliferation via autophagy. Further analysis of the mechanism of action of SNHG1 showed that it functions as a sponge of miRNA-493 in bladder cancer. miRNA-493 binds on the 3’ -UTR of ATG14 mRNA thus affecting ATG14 protein expression, which is implicated in autophagy. These findings are supported by previous preclinical studies using multiple Bca cell lines and TCGA, which demonstrate that SNHG1 plays an oncogenic role by acting as a sponge of miR-493-5p or as its ceRNA. Upregulation of SNHG1 promotes proliferation, invasion, and autophagy of bladder cancer cells through the miR-493-5p/ATG14/autophagy pathway. Therefore, SNHG1 may act as a potential therapeutic target for the treatment of bladder cancer.
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Affiliation(s)
- Changcheng Guo
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xin Li
- Department of Urology, Taizhou Center Hospital, Taizhou University, Zhejiang, China
| | - Jinbo Xie
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Dan Liu
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Jiang Geng
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Lin Ye
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Yang Yan
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xudong Yao
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Ming Luo
- Department of Urology, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
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Wang H, Zhang M, Wei T, Zhou J, Zhang Y, Guo D. Long non-coding RNA SNHG1 mediates neuronal damage in Parkinson's disease model cells by regulating miR-216a-3p/Bcl-2-associated X protein. Ann Transl Med 2021; 9:851. [PMID: 34164485 PMCID: PMC8184415 DOI: 10.21037/atm-21-1613] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Parkinson’s disease (PD) is a common central nervous system degenerative disease in middle-aged and elderly people. Our study aimed to illuminate the relationship and mechanism of long-chain non-coding RNA SNHG1 and miRNA (miR)-216a-3p in PD. Methods Human neuroblastoma cell lines were treated with MPP+ to construct a PD model. Real-time fluorescent quantitative PCR was used to detect the cellular expression of SNHG1. Neuronal cell activity and apoptosis were compared before and after SNHG1 knock-down, as was neuronal miR-216a-3p expression. Further, a luciferase reporter gene experiment was performed to verify BAX as the target of miR-216a-3p. Anti-miR-216a-3p and BAX were co-transfected into PD model cells, and neuronal cellular activity and apoptosis were observed. Finally, the potential regulatory network of SNHG1/miR-216a-3p/BAX in PD was investigated. Results The expression of miR-216a-3p was decreased in the PD model cells, and re-expression reversed the high apoptotic rate and cell vitality inhibition in PD model cells. SNHG1 interacted with miR-216a-3p and negatively regulated its upstream molecules, while miR-216a-3p attenuated the effect of SNHG1 knock-down on neurons. The overexpression of BAX in the PD cell model blocked the damage by miR-216a-3p to neurons. At the same time, SNHG1 acted as a coordinator, mediating the regulation of BAX via miR-216a-3p, thereby affecting the activity and apoptotic rate of neurons in the PD model. Conclusions SNHG1 interacts with miR-216a-3p to regulate the expression of BAX. This SNHG1/miR-216a-3p/BAX molecular regulatory network is implicated in the pathogenesis of PD.
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Affiliation(s)
- Hai Wang
- Department of Laboratory, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Meng Zhang
- Department of Laboratory, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Taofeng Wei
- Department of Pharmacy, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jie Zhou
- Center for Medicinal Resources Research, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou, China
| | - Yongle Zhang
- Department of Laboratory, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Dengjun Guo
- Department of Neurology, Tongde Hospital of Zhejiang Province, Hangzhou, China
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Zuo Y, Qu C, Tian Y, Wen Y, Xia S, Ma M. The HIF-1/ SNHG1/miR-199a-3p/TFAM axis explains tumor angiogenesis and metastasis under hypoxic conditions in breast cancer. Biofactors 2021; 47:444-460. [PMID: 34003544 DOI: 10.1002/biof.1702] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 11/14/2020] [Indexed: 12/15/2022]
Abstract
Activation of hypoxia-inducible factors (HIFs) as a result of intratumoral hypoxia modulates a cascade of molecular pathways thus leading to angiogenesis and metastasis in many solid tumors, including breast cancer (BC). In our paper, we report a regulatory axis of HIF-1, SNHG1, miR-199a-3p, and mitochondrial transcription factor A (TFAM) involved in tumor angiogenesis and metastasis under hypoxic conditions in BC. The expression of SNHG1 was determined in human BC cells cultured in hypoxia (1% O2 , 24 h) and normoxia (20% O2 , 24 h). Cultured MDA-MB-231 cells were assayed for the proliferation, migration, invasion, angiogenesis in vitro by using EdU staining, transwell chamber assays, Matrigel-based angiogenesis assays, tumorigenesis, and lung metastasis in vivo by using an orthotopic-transplant model of human BC. Dual-luciferase reporter assay, chromatin immunoprecipitation quantitative polymerase chain reaction assay, fluorescence in situ hybridization assay, RNA-binding protein immunoprecipitation assay, and RNA pull-down were performed to test interaction between HIF-1 and SNHG1, SNHG1 and miR-199a-3p, miR-199a-3p and TFAM. SNHG1 was increased under hypoxic conditions at a HIF-1-dependent manner. SNHG1 knockdown tempered MDA-MB-231 cell proliferation, migration, invasion, angiogenesis, in vitro, tumorigenesis, and lung metastasis in vitro. SNHG1 was co-expressed with miR-199a-3p and regulated the TFAM, a target gene of miR-199a-3p. SNHG1 increased the TFAM by binding with miR-199a-3p, thus promoting BC development and metastasis. These results support a regulatory axis consisting of HIF-1, SNHG1, miR-199a-3p, and TFAM during BC development and metastasis under hypoxic conditions, providing an opportunity to develop targeted therapeutics for BC.
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Affiliation(s)
- Yonggang Zuo
- Department of Breast and Thyroid Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Changping Qu
- Department of Gynaecology and Obstetrics, Huaihe Hospital of Henan University, Kaifeng, China
| | - Yanyan Tian
- Department of Breast and Thyroid Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Yuqing Wen
- Department of Breast and Thyroid Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Shuguan Xia
- Department of Breast and Thyroid Surgery, Huaihe Hospital of Henan University, Kaifeng, China
| | - Mingde Ma
- Department of Breast and Thyroid Surgery, Huaihe Hospital of Henan University, Kaifeng, China
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Tian P, Wei JX, Li J, Ren JK, Yang JJ. LncRNA SNHG1 regulates immune escape of renal cell carcinoma by targeting miR-129-3p to activate STAT3 and PD-L1. Cell Biol Int 2021; 45:1546-1560. [PMID: 33739543 DOI: 10.1002/cbin.11595] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [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: 05/19/2020] [Revised: 01/03/2021] [Accepted: 03/14/2021] [Indexed: 12/21/2022]
Abstract
Immune escape of renal cell carcinoma (RCC) impacts patient survival. However, the molecular mechanism of long noncoding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) in RCC immune escape remains unclear. Quantitative real-time PCR and western blotting results revealed that the expression of lncRNA SNHG1 and STAT3 were upregulated in RCC tissues and cells and that the expression of miR-129-3p was downregulated. Enzyme-linked immunosorbent assay results revealed the increased levels of immune-related factors (interferon-γ, tumour necrosis factor α, and interleukin-2) in RCC tissues. SNHG1 knockdown or miR-129-3p overexpression inhibited the proliferation and invasion of A498 and 786-O cells, while the proliferation and cytotoxicity of CD8+ T cells increased, which promoted the secretion of immune-related factors. STAT3 overexpression decreased the protective effect of miR-129-3p overexpression on RCC cell immune escape. In addition, miR-129-3p knockdown and STAT3 overexpression decreased the protective effect of lncRNA SNHG1 knockdown on RCC cell immune escape. In addition, PD-L1 expression was downregulated after lncRNA SNHG1 knockdown but upregulated after miR-129-3p knockdown and STAT3 overexpression. Dual-luciferase assays showed that lncRNA SNHG1 targets miR-129-3p, and miR-129-3p targets STAT3. RNA pull-down and RNA immunoprecipitation assays verified the regulatory relationship between SNHG1 and STAT3. In vivo, shSNHG1 prolonged the overall survival of RCC tumour model mice and inhibited RCC tumour growth and immune escape but increased CD8+ T cell infiltration in mice. Our findings provide an experimental basis for elucidating the molecular mechanisms of immune escape by RCC and reveal a novel target to treat this disease.
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Affiliation(s)
- Pei Tian
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jin-Xing Wei
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jing Li
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jun-Kai Ren
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Jin-Jian Yang
- Department of Urology, First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
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Ge P, Cao L, Zheng M, Yao Y, Wang W, Chen X. LncRNA SNHG1 contributes to the cisplatin resistance and progression of NSCLC via miR-330-5p/DCLK1 axis. Exp Mol Pathol 2021; 120:104633. [PMID: 33753110 DOI: 10.1016/j.yexmp.2021.104633] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 01/05/2021] [Accepted: 03/17/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) are involved in the occurrence and progression of multiple cancers, including non-small cell lung cancer (NSCLC). Herein, we explored the exact role and underlying mechanism of lncRNA small nucleolar RNA host gene 1 (SNHG1) in NSCLC. METHODS The levels of SNHG1, microRNA-330-5p (miR-330-5p) and doublecortin-like kinase 1 (DCLK1) were detected by quantitative real-time polymerase chain reaction (qRT-PCR). 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was carried out to measure the chemoresistance and proliferation of NSCLC cells. The metastasis and apoptosis of NSCLC cells were examined by transwell migration and invasion assays and flow cytometry. Western blot assay was conducted to detect the levels of proliferation-associated proteins and DCLK1. The interaction between miR-330-5p and SNHG1 or DCLK1 was predicted by StarBase and microT_CDS databases. Dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay were performed to validate these interactions. In vivo chemosensitivity experiment was conducted to assess the function of SNHG1 in the chemoresistance of NSCLC in vivo. RESULTS SNHG1 was dramatically up-regulated in cisplatin (DDP)-resistant NSCLC tissues and cells. SNHG1 promoted the DDP resistance and malignant behaviors of NSCLC cells. SNHG1 functioned through targeting miR-330-5p, and si-SNHG1-mediated effects in NSCLC cells were attenuated by the addition of in-miR-330-5p. DCLK1 messenger RNA (mRNA) could directly bind to miR-330-5p, and miR-330-5p acted as a tumor suppressor in NSCLC through down-regulating DCLK1. SNHG1 silencing elevated the DDP sensitivity of NSCLC cells in vivo. CONCLUSION SNHG1 elevated DDP resistance and malignant potential of NSCLC cells through elevating the level of DCLK1 via sponging miR-330-5p.
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Zhou X, Xu B, Gu Y, Ji N, Meng P, Dong L. Long noncoding RNA SNHG1 protects brain microvascular endothelial cells against oxygen-glucose deprivation/reoxygenation-induced injury by sponging miR-298 and upregulating SIK1 expression. Biotechnol Lett 2021; 43:1163-1174. [PMID: 33677804 DOI: 10.1007/s10529-021-03096-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 03/16/2020] [Accepted: 02/03/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Growing evidence shows that long non-coding RNAs (lncRNAs) are widely involved in the progression of multiple diseases, including ischemic stroke. The aim of this study was to explore the function and underlying mechanism of lncRNAs small nucleolar RNA host gene 1 (SNHG1) in ischemic stroke. RESULTS SNHG1 and salt-induced kinase 1 (SIK1) were upregulated in oxygen-glucose deprivation/reperfusion (OGD/R)-induced bEnd3 cells. SNHG1 downregulation promoted OGD/R-induced injury through decreasing cell proliferation and increasing apoptosis, which was reversed by upregulating SIK1 or downregulating miR-298. Moreover, SIK1 interference had similar functions with SNHG1 knockdown in OGD/R-treated bEnd3 cells. In addition, miR-298 was a direct target of SNHG1 and could specifically bind to SIK1. Furthermore, SNHG1 functioned as a molecular sponge of miR-298 to regulate SIK1 expression. CONCLUSION SNHG1 knockdown enhanced OGD/R-induced injury in bEnd3 cells by regulating miR-298/SIK1 axis, which might provide promising therapeutic target for treatment of ischemic stroke.
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Affiliation(s)
- Xinyu Zhou
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang, Jiangsu, China
| | - Bingchao Xu
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang, Jiangsu, China
| | - Yan Gu
- The Affiliated Lianyungang Hospital of Xuzhou Medical University, Lianyungang, Jiangsu, China
| | - Niu Ji
- The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Pin Meng
- The First People's Hospital of Lianyungang, Lianyungang, Jiangsu, China
| | - Lingdan Dong
- Department of Pathology, Maternal and Child Health Hospital of Hubei Province, No. 745, Wu Luo Road, Hongshan District, Wuhan, 430070, Hubei province, China.
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Luo S, Huang X, Liu S, Zhang L, Cai X, Chen B. Long Non-Coding RNA Small Nucleolar RNA Host Gene 1 Alleviates Sepsis-Associated Myocardial Injury by Modulating the miR-181a-5p/XIAP Axis in vitro. Ann Clin Lab Sci 2021; 51:231-240. [PMID: 33941563] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVE Sepsis is a systemic inflammatory response syndrome that results in severe myocardial injury. This study aimed to explore the role and mechanism of long non-coding RNA (lncRNA) small nucleolar RNA host gene 1 (SNHG1) in sepsis-induced myocardial injury in vitro. METHODS Embryonic rat ventricular myocardial cell line (H9c2) was treated with lipopolysaccharide (LPS) to simulate sepsis-induced myocardial injury in vitro. A quantitative real-time polymerase chain reaction was executed to determine the expression of SNHG1 and microRNA (miR)-181a-5p. 3-(4, 5-dimethyl-2-thiazolyl)-2, 5-diphenyl-2-h-tetrazolium bromide assay was employed to measure cell viability. The levels of inflammatory factors (tumor necrosis factor alpha [TNF-α], interleukin 6 [IL-6], and IL-1β) were measured by enzyme-linked immunosorbent assay. Oxidative stress was assessed by measuring malondialdehyde, superoxide dismutase, and lactate dehydrogenase. The targeted interrelations among SNHG1, miR-181a-5p, and X-linked inhibitor of apoptosis protein (XIAP) were verified by dual-luciferase reporter assay. Relative protein expression of XIAP was detected by western blot. RESULTS SNHG1 and XIAP were down-regulated, and miR-181a-5p was up-regulated in LPS-induced H9c2 cells. Overexpression of SNHG1 or inhibition of miR-181a-5p facilitated cell viability and repressed inflammation and oxidative stress in LPS-treated H9c2 cells. MiR-181a-5p was a target of and negatively regulated by SNHG1. At the same time, XIAP was a target gene of and inversely modulated by miR-181a-5p. In addition, XIAP was positively regulated by SNHG1. Up-regulation of miR-181a-5p or silencing of XIAP reversed the inhibitory effects of SNHG1 on inflammation and oxidative stress, as well as the promoting effects on cell viability in LPS-induced H9c2 cells. CONCLUSION SNHG1 protected H9c2 cells against LPS-induced injury through modulating the miR-181a-5p/XIAP axis.
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Affiliation(s)
| | | | | | | | | | - Bojun Chen
- Department of Emergency, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong Province, China
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Zhou J, Li Z, Zhao Q, Wu T, Zhao Q, Cao Y. Knockdown of SNHG1 alleviates autophagy and apoptosis by regulating miR-362-3p/Jak2/stat3 pathway in LPS-injured PC12 cells. Neurochem Res 2021; 46:945-956. [PMID: 33515352 DOI: 10.1007/s11064-020-03224-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 12/29/2020] [Accepted: 12/31/2020] [Indexed: 12/14/2022]
Abstract
Spinal cord injury (SCI) is a serious neurological disease. Long non-coding RNA (lncRNA) small nucleolar RNA host gene (SNHG1) and microRNA-362-3p (miR-362-3p) were confirmed to be related to neurological disorders. However, it is unclear whether SNHG1 was involved in the development of SCI via regulating miR-362-3p. PC12 cells were treated with lipopolysaccharide (LPS) to imitate the in vitro cell model of SCI. Cell ciability and apoptosis rate were detected by cell counting kit-8 (CCK-8) assay and flow cytometry assay. The levels of SNHG1, miR-362-3p, and Janus kinase-2 (Jak2) were examined by quantitative real-time polymerase chain reaction (qRT-PCR). The dual-luciferase reporter assay, RNA pull-down assay, and RNA immunoprecipitation (RIP) assay were performed to verify the interaction between miR-362-3p and SNHG1 or Jak2. Besides, the levels of apoptosis- and autophagy- related proteins were detected by western blot assay. In present research, LPS suppressed cell viability, and induced apoptosis and autophagy in PC12 cells. SNHG1 knockdown could affect cell viability, and suppress cell apoptosis and autophagy in LPS-treated PC12 cells. Moreover, miR-362-3p was a target of SNHG1, miR-362-3p targeted Jak2 and negatively regulated Jak2/stat3 pathway. Our data also demonstrated that SNHG1 depletion inactivated Jak2/stat3 pathway to affect cell viability and confine apoptosis, autophagy in LPS-treated PC12 cells. Taken together, SNHG1 regulated cell viability, apoptosis and autophagy in LPS-treated PC12 cells by activating Jak2/stat3 pathway via sponging miR-362-3p.
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Affiliation(s)
- Jiahui Zhou
- Department of Orthopaedic, The Third Xiangya Hospital of Central South University, Changsha, 410008, Hunan, China
| | - Zhiyue Li
- Department of Orthopaedic, The Third Xiangya Hospital of Central South University, Changsha, 410008, Hunan, China
| | - Qun Zhao
- Department of Orthopaedic, The Third Xiangya Hospital of Central South University, Changsha, 410008, Hunan, China
| | - Tianding Wu
- Department of Orthopaedic, Xiangya Hospital Central South University, Changsha, 410008, Hunan, China
| | - Qiancheng Zhao
- Department of Orthopaedic, The Third Xiangya Hospital of Central South University, Changsha, 410008, Hunan, China
| | - Yong Cao
- Department of Orthopaedic, Xiangya Hospital Central South University, Changsha, 410008, Hunan, China.
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Abstract
Background Small nucleolar RNA host gene 1 (SNHG1), a long noncoding RNA (lncRNA), is a transcript that negatively regulates tumour suppressor genes, such as p53. Abnormal SNHG1 expression is associated with cell proliferation and cancer. We used sequencing data downloaded from Genomic Data Commons to analyse the expression and interaction networks of SNHG1 in hepatocellular carcinoma (HCC). Methods Expression was examined using the limma package of R and verified by Gene Expression Profiling Interactive Analysis. We also obtained miRNA expression data from StarBase to determine the lncRNA-miRNA-mRNA–related RNA regulatory network in HCC. Kaplan–Meier (KM) analysis was performed using the survival package of R. Gene Ontology annotation of genes was carried out using Metascape. Results We found that SNHG1 was overexpressed and often amplified in HCC patients. In addition, SNHG1 upregulation was associated with the promotion of several primary biological functions, including cell proliferation, transcription and protein binding. Moreover, we found similar trends of small nucleolar RNA host gene 1 (SNHG1), E2F8 (E2F transcription factor 8), FANCE (FA complementation group E) and LMNB2 (encodes lamin B2) expression. In the SNHG1-associated network, high expression levels of SNHG1 (log-rank P value = 0.0643), E2F8 (log-rank P value = 0.000048), FANCE (log-rank P value = 0.00125) and LMNB2 (log-rank P value = 0.0392) were significantly associated with poor survival. Single-cell analysis showed that E2F8 may play an important role in tumorigenesis or cancer development. Conclusions Our results highlight the benefit of utilizing multiple datasets to understand the functional potential regulatory networks of SNHG1 and the role of SNHG1 in tumours.
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Wang H, Wang X, Zhang Y, Zhao J. LncRNA SNHG1 promotes neuronal injury in Parkinson's disease cell model by miR-181a-5p/CXCL12 axis. J Mol Histol 2021; 52:153-163. [PMID: 33389428 DOI: 10.1007/s10735-020-09931-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [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: 03/24/2020] [Accepted: 11/24/2020] [Indexed: 11/30/2022]
Abstract
Small molecule RNA host gene 1 (SNHG1) has been found to be an important regulator in the neurotoxicity of Parkinson's disease (PD). However, the underlying molecular mechanisms of SNHG1 in PD remains elusive. The expression of SNHG1, microRNA (miR)-181a-5p, and C-X-C motif chemokine 12 (CXCL12) mRNA was detected using quantitative real-time polymerase chain reaction. Cell viability and apoptosis were analyzed by cell counting kit-8 and Flow cytometry, respectively. Western blot was utilized to determine the levels of B-cell lymphoma-2 (Bcl-2), CyclinD1, Cleaved-caspase-3, and CXCL12 protein. The interaction between miR-181a-5p and SNHG1 or CXCL12 was confirmed by the dual-luciferase reporter assay. We discovered that SNHG1 was significantly elevated, while miR-181a-5p was decreased in N-methyl-4-phenylpyridinium (MPP+)-treated neuroblastoma cells in dose-dependent manners. MPP+ induced cell viability inhibition and apoptosis promotion, while these effects were reversed by SNHG1 knockdown or miR-181a-5p re-expression. SNHG1 directly bound to miR-181a-5p, and miR-181a-5p inhibition could block the action of SNHG1 knockdown on MPP+-induced neurotoxicity in neuroblastoma cells. CXCL12 was identified as a downstream target of miR-181a-5p, and the impact of miR-181a-5p on MPP+-induced neuronal damage could be attenuated by CXCL12 overexpression. Besides, SNHG1 could indirectly regulate CXCL12 expression via miR-181a-5p. We demonstrated that SNHG1 promoted MPP+ induced neuronal injury in neuroblastoma cells by regulating miR-181a-5p/CXCL12 axis, suggesting SNHG1 might contribute to the development of PD, which provided a novel insight into the pathogenesis and treatment of PD.
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Affiliation(s)
- Hui Wang
- Department of Internal Neurology, The 966th Hospital of the Joint Service Support Force, No.19, Shijing Street, 118000, Dandong, Liaoning, China
| | - Xiaopeng Wang
- Department of Internal Neurology, The 966th Hospital of the Joint Service Support Force, No.19, Shijing Street, 118000, Dandong, Liaoning, China
| | - Yiying Zhang
- University of Army Engineering, Nanjing, Jiangsu, China
| | - Jianchuan Zhao
- Department of Internal Neurology, The 966th Hospital of the Joint Service Support Force, No.19, Shijing Street, 118000, Dandong, Liaoning, China.
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Xiao X, Tan Z, Jia M, Zhou X, Wu K, Ding Y, Li W. Long Noncoding RNA SNHG1 Knockdown Ameliorates Apoptosis, Oxidative Stress and Inflammation in Models of Parkinson's Disease by Inhibiting the miR-125b-5p/MAPK1 Axis. Neuropsychiatr Dis Treat 2021; 17:1153-1163. [PMID: 33911864 PMCID: PMC8075359 DOI: 10.2147/ndt.s286778] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 02/11/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Parkinson's disease (PD) is a prevalent neurodegenerative disease. Long noncoding RNA small molecule RNA host gene 1 (SNHG1) has been reported to play critical roles in Parkinson's disease (PD) progression. The study aimed to further elucidate the mechanism of SNHG1 in PD pathogenesis. METHODS The levels of SNHG1, miR-125b-5p and mitogen-activated protein kinase 1 (MAPK1) were determined by quantitative real-time polymerase chain reaction (qRT-PCR) or Western blot. Cell viability and apoptosis were evaluated by Cell Counting Kit-8 (CCK-8) assay and flow cytometry, respectively. The activity of Caspase-3 or Caspase-9 was measured using a Caspase-3 or Caspase-9 Assay Kit. The levels of tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), IL-1β, lactic dehydrogenase (LDH) activity, reactive oxygen species (ROS) generation and superoxide dismutase (SOD) activity were gauged by enzyme-linked immunosorbent assay (ELISA). Dual-luciferase reporter assay was performed to identify the relationship between miR-125b-5p and SNHG1 or MAPK1. The MPTP-induced PD mouse was used as an in vivo model of PD and MPP+-treated SK-N-SH and MN9D cells were used as in vitro models of PD. RESULTS SNHG1 and MAPK1 were significantly up-regulated while miR-125b-5p was down-regulated in the MPTP-induced PD mouse model and MPP+-induced PD cell models. SNHG1 silence or miR-125b-5p overexpression protected against MPP+-evoked apoptosis, oxidative stress and inflammation in SK-N-SH and MN9D cells. Moreover, SNHG1 acted as a molecular sponge of miR-125b-5p, and the protective impact of SNHG1 silence on MPP+-evoked cell damage was reversed by miR-125b-5p inhibition. Furthermore, MAPK1 was a functional target of miR-125b-5p and its overexpression attenuated the effects of miR-125b-5p restoration in MPP+-triggered cell injury. In addition, the behavioral changes in MPTP-induced PD mouse in vivo model were relieved by SNHG1 silence. CONCLUSION SNHG1 knockdown exerted neuroprotective effects in MPP+-evoked cytotoxicity through regulating the miR-125b-5p/MAPK1 axis both in human and mouse PD cell models, highlighting a possible target for PD therapy.
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Affiliation(s)
- Xiao Xiao
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine (Affiliated Hospital of Hubei University of Traditional Chinese Medicine, Hubei Institute of Traditional Chinese Medicine), Wuhan City, Hubei Province, People's Republic of China
| | - Zhiwen Tan
- Department of Encephalopathy, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, Hubei Province, People's Republic of China
| | - Min Jia
- Department of Neurology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, Hubei Province, People's Republic of China
| | - Xiaoli Zhou
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine (Affiliated Hospital of Hubei University of Traditional Chinese Medicine, Hubei Institute of Traditional Chinese Medicine), Wuhan City, Hubei Province, People's Republic of China
| | - Kemei Wu
- Department of Neurology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, Hubei Province, People's Republic of China
| | - Yanbing Ding
- Department of Encephalopathy, Hubei Provincial Hospital of Traditional Chinese Medicine (Affiliated Hospital of Hubei University of Traditional Chinese Medicine, Hubei Institute of Traditional Chinese Medicine), Wuhan City, Hubei Province, People's Republic of China
| | - Wenjing Li
- Department of Neurology, The Central Hospital of Enshi Tujia and Miao Autonomous Prefecture, Enshi City, Hubei Province, People's Republic of China
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Yu X, Xia J, Cao Y, Tang L, Tang X, Li Z. SNHG1 represses the anti-cancer roles of baicalein in cervical cancer through regulating miR-3127-5p/FZD4/Wnt/β-catenin signaling. Exp Biol Med (Maywood) 2021; 246:20-30. [PMID: 32883110 PMCID: PMC7798002 DOI: 10.1177/1535370220955139] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 04/27/2020] [Accepted: 08/10/2020] [Indexed: 12/11/2022] Open
Abstract
IMPACT STATEMENT Baicalein exhibits anti-cancer roles in several cancers. However, the factors influencing the antitumorigenic efficiencies of baicalein in CC remain largely unclear. Here, we provide convincing evidences that lncRNA SNHG1 attenuates the tumor-suppressive roles of baicalein in CC cell viability, apoptosis, migration, and CC tumor growth. This study further demonstrates that the influences of SNHG1 in the antitumorigenic process of baicalein are achieved through modulating the miR-3127-5p/FZD4Wnt/β-catenin axis. SNHG1 attenuates the repressive role of baicalein on Wnt/β-catenin. Therefore, SNHG1 is a novel modulator of the tumor-suppressive roles of baicalein and SNHG1 represents a therapeutic intervention target to reinforce the tumor-suppressive roles of baicalein in CC.
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Affiliation(s)
- Xiaolan Yu
- Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Sichuan 610041, China
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Sichuan 610041, China
| | - Jiyi Xia
- School of Medical Information and Engineering, Southwest Medical University, Luzhou 646000, China
| | - Yong Cao
- Medicine Experimental Center, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Li Tang
- Medicine Experimental Center, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Xiaoping Tang
- Medicine Experimental Center, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China
| | - Zhengyu Li
- Department of Gynecology and Obstetrics, West China Second University Hospital, Sichuan University, Sichuan 610041, China
- Department of Obstetrics and Gynecology, Key Laboratory of Birth Defects and Related Diseases of Women and Children (Sichuan University), Ministry of Education, West China Second University Hospital, Sichuan University, Sichuan 610041, China
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Wang X, Yang S, Lv X, Wang L, Li C. Overexpression of LncRNA SNHG1 Were Suitable for Oncolytic Adenoviruse H101 Therapy in Oral Squamous-Cell Carcinoma. Onco Targets Ther 2020; 13:13033-13039. [PMID: 33376352 PMCID: PMC7762447 DOI: 10.2147/ott.s285536] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 10/16/2020] [Accepted: 11/20/2020] [Indexed: 11/23/2022] Open
Abstract
Background As the most prevalent type of head and neck cancer, oral squamous-cell carcinoma (OSCC) accounts for nearly 90% of all oral cancer cases. Despite great progress having been made in the diagnosis and treatment of OSCC recently, the survival rate of OSCC patients has not risen remarkably. Chemotherapy is commonly used for OSCC treatment; however, the emergence of chemoresistance limits its long-term curative effect. Therefore, identifying effective biomarkers and molecular mechanisms is essential to the development of therapeutic strategies for OSCC. Methods qRT-PCR assays were performed to detect SNHG1 expression in OSCC tissue and cells, and CCK8 assays and animal experiments used to examine cell proliferation. In addition, CCK8 assays were used to detect IC50 values of cisplatin, 5Fu, Dox, and oncolytic adenovirus H101. Results We found that SNHG1 was overexpressed in OSCC tissue and cells and was associated with OSCC progression. In addition, knockdown of SNHG1 suppressed cell proliferation in vitro and in vivo. Importantly, we found that oncolytic adenovirus H101 showed better antitumor effects in OSCC with high SNHG1 expression, and chemotherapy showed worse anti-tumor effects in OSCC with high SNHG1 expression. Conclusion SNHG1 can act as a diagnostic biomarker for OSCC, and may be a biomarker for treatment options.
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Affiliation(s)
- Xin Wang
- Department of Plastic Maxillofacial Surgery, Heilongjiang Provincial Hospital, Harbin 150036, Heilongjiang, People's Republic of China
| | - Song Yang
- Department of Plastic Maxillofacial Surgery, Heilongjiang Provincial Hospital, Harbin 150036, Heilongjiang, People's Republic of China
| | - Xuechao Lv
- Department of Pediatric Dentistry, School of Stomatology, Harbin Medical University, Harbin 150001, Heilongjiang, People's Republic of China
| | - Lina Wang
- Department of Oral and Maxillofacial Surgery, Second Affiliated Hospital of Harbin Medical University, Harbin 150086, Heilongjiang, People's Republic of China
| | - Chunmei Li
- Department of Outpatient Stomatology, Heilongjiang Provincial Hospital, Harbin 150036, Heilongjiang, People's Republic of China
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Cai RD, Zhang CC, Xie LL, Wang PC, Huang CX, Chen JL, Lv HT. SNHG1 Promotes Malignant Progression of Glioma by Targeting miR-140-5p and Regulating PI3K/AKT Pathway. Cancer Manag Res 2020; 12:12011-12020. [PMID: 33262651 PMCID: PMC7700088 DOI: 10.2147/cmar.s269572] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 06/26/2020] [Accepted: 10/15/2020] [Indexed: 12/19/2022] Open
Abstract
PURPOSE To explore the regulatory mechanism of long non-coding RNA small nucleolar RNA host gene 1 (SNHG1) in glioma. MATERIALS AND METHODS The expression of SNHG1 and miR-140-5p in glioma tissues and glioma cell lines (LN-18, KNS-81, and KALS-1) was determined, and the effect of the two on cell proliferation, invasion, and PI3K/AKT pathway was analyzed. RESULTS SNHG1 was overexpressed in glioma tissues, while miR-140-5p was underexpressed in them, and there was a significant negative correlation between SNHG1 and miR-140-5p. In addition, both down-regulation of SNHG1 and up-regulation of miR-140-5p significantly inhibited the malignant proliferation and invasion of glioma, intensified the apoptosis, and also significantly suppressed the activation of the PI3K/AKT pathway. The dual-luciferase reporter assay, RNA pull-down assay, and RIP determination all confirmed that there was a targeting relationship between SNHG1 and miR-140-5p, and there was no difference between KNS-81 and KALS-1 cells transfected with SNHG1+mimics and si-SNHG1+inhibitor and those in the si-NC group with unrelated sequences in terms of cell malignant progression. CONCLUSION SNHG1/miR-140-5p axis and its regulation on PI3K/AKT pathway might be a novel therapeutic direction to curb the malignant progression of glioma.
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Affiliation(s)
- Ren-Duan Cai
- Department of Neurosurgery, Hainan General Hospital/Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, People’s Republic of China
| | - Chao-Cai Zhang
- Department of Neurosurgery, Hainan General Hospital/Hainan Affiliated Hospital of Hainan Medical University, Haikou, Hainan Province, People’s Republic of China
| | - Li-Li Xie
- Department of Neurology, Dalian Central Hospital, Dalian, Liaoning Province, People’s Republic of China
| | - Peng-Cheng Wang
- Department of Neurosurgery, Hainan People’s Hospital, Haikou, Hainan Province, People's Republic of China
| | - Chui-Xue Huang
- Department of Neurosurgery, Hainan People’s Hospital, Haikou, Hainan Province, People's Republic of China
| | - Jian-Long Chen
- Department of Neurosurgery, Hainan People’s Hospital, Haikou, Hainan Province, People's Republic of China
| | - Hong-Tao Lv
- Department of Neurosurgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, People’s Republic of China
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Liu F, Feng XX, Zhu SL, Lin L, Huang HY, Zhang BY, Huang JL. Long non-coding RNA SNHG1 regulates rheumatoid synovial invasion and proliferation by interaction with PTBP1. Int Immunopharmacol 2020; 90:107182. [PMID: 33218941 DOI: 10.1016/j.intimp.2020.107182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 08/18/2020] [Revised: 10/04/2020] [Accepted: 11/02/2020] [Indexed: 02/09/2023]
Abstract
Fibroblast-like synoviocytes (FLSs) in rheumatoid arthritis (RA) present proliferative and aggressive cell phenotype. RA-FLSs are the essential effector cells that lead to symptoms like synovial inflammation and joint destruction. Currently, the cause of RA-FLSs involving in the pathological process of RA remains unknown. Accumulate researches have demonstrated that lncRNAs may play a critical role in regulating the biological behaviors of RA-FLSs, but the mechanism is still unclear. Here, we found that lncRNA small nucleolar RNA host gene 1 (SNHG1) is up-regulated in RA-FLSs compared with FLSs from trauma arthritis and osteoarthritis patients. The results suggest that SNHG1 in RA-FLSs helps to sustain the cellular functions of proliferation, migration and invasion. Furthermore, the regulation mechanism depends on the interaction between SNHG1 and polypyridine tract-binding protein 1 (PTBP1). This interaction influences PTBP1 expression that participates in the regulation of RA-FLSs biological behaviors. Our results suggest that up-regulated SNHG1 of RA-FLSs may contribute to synovial aggression and disease progression in RA and be favourable for RA treatment target RA-FLSs.
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Affiliation(s)
- Fang Liu
- Division of Rheumatology, Department of Internal Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiao-Xue Feng
- Division of Rheumatology, Department of Internal Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Shang-Ling Zhu
- Division of Rheumatology, Department of Internal Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Lang Lin
- Division of Rheumatology, Department of Internal Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Hong-Yu Huang
- Department of Immunology, Faculty of Medicine, University of Toronto, Toronto, Canada
| | - Bai-Yu Zhang
- Division of Rheumatology, Department of Internal Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
| | - Jian-Lin Huang
- Division of Rheumatology, Department of Internal Medicine, The Sixth Affiliated Hospital, Sun Yat-sen University, Guangzhou, China.
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Abstract
To investigate the mechanism of small nucleolar RNA host gene 1 (SNHG1) in cervical cancer (CC). Methods: The expression of SNHG1, miR-194 and human cervical cancer oncogene (HCCR) in CC tissues and cells was detected using qRT-PCR and western blot. The interaction among the three molecules was measured using dual-luciferase reporter assay and RNA immunoprecipitation assay. The function of SNHG1 in CC cells was detected by CKK-8 assay and flow cytometry analysis. Results: SNHG1 was highly expressed in CC tissues and CC cell lines. Knockdown of SNHG1 inhibited CC cell proliferation and enhanced the ability of cell apoptosis. Mechanism investigation revealed that SNHG1 modulated HCCR expression via acting as a competing endogenous RNA of miR-194. Moreover, miR-194 inhibitor changed the effects of si-SNHG1 on CC cells growth. In vivo experiment, silencing of SNHG1 suppressed CC tumor growth by modulating miR-194/HCCR axis. Conclusion: Knockdown of SNHG1 inhibited CC progression by targeting HCCR via sponging with miR-194.
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Affiliation(s)
- Jie Zhang
- Department of Gynecology Oncology, Xuzhou Cancer Hospital, Xuzhou Hospital Affiliated to Jiangsu University, Xuzhou, China
| | - Beibei Liu
- Department of Gynecology Oncology, Xuzhou Cancer Hospital, Xuzhou Hospital Affiliated to Jiangsu University, Xuzhou, China
| | - Ping Zhang
- Department of Gynecology Oncology, Xuzhou Cancer Hospital, Xuzhou Hospital Affiliated to Jiangsu University, Xuzhou, China
| | - Lan Wang
- Department of Gynecology Oncology, Xuzhou Cancer Hospital, Xuzhou Hospital Affiliated to Jiangsu University, Xuzhou, China
| | - Yanling Zhu
- Department of Gynecology Oncology, Xuzhou Cancer Hospital, Xuzhou Hospital Affiliated to Jiangsu University, Xuzhou, China
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