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Li Y, Yuan S, Zhou Y, Zhou J, Zhang X, Zhang P, Xiao W, Zhang Y, Deng J, Lou S. Long non-coding RNA PXN-AS1 promotes glutamine synthetase-mediated chronic myeloid leukemia BCR::ABL1-independent resistance to Imatinib via cell cycle signaling pathway. Cancer Cell Int 2024; 24:186. [PMID: 38811958 PMCID: PMC11138077 DOI: 10.1186/s12935-024-03363-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Accepted: 05/08/2024] [Indexed: 05/31/2024] Open
Abstract
BACKGROUND Chronic myeloid leukemia (CML) is a common hematological malignancy, and tyrosine kinase inhibitors (TKIs) represent the primary therapeutic approach for CML. Activation of metabolism signaling pathway has been connected with BCR::ABL1-independent TKIs resistance in CML cells. However, the specific mechanism by which metabolism signaling mediates this drug resistance remains unclear. Here, we identified one relationship between glutamine synthetase (GS) and BCR::ABL1-independent Imatinib resistance in CML cells. METHODS GS and PXN-AS1 in bone marrow samples of CML patients with Imatinib resistance (IR) were screened and detected by whole transcriptome sequencing. GS expression was upregulated using LVs and blocked using shRNAs respectively, then GS expression, Gln content, and cell cycle progression were respectively tested. The CML IR mice model were established by tail vein injection, prognosis of CML IR mice model were evaluated by Kaplan-Meier analysis, the ratio of spleen/body weight, HE staining, and IHC. PXN-AS1 level was blocked using shRNAs, and the effects of PXN-AS1 on CML IR cells in vitro and in vivo were tested the same as GS. Several RNA-RNA tools were used to predict the potential target microRNAs binding to both GS and PXN-AS1. RNA mimics and RNA inhibitors were used to explore the mechanism through which PXN-AS1 regulates miR-635 or miR-635 regulates GS. RESULTS GS was highly expressed in the bone marrow samples of CML patients with Imatinib resistance. In addition, the lncRNA PXN-AS1 was found to mediate GS expression and disorder cell cycle in CML IR cells via mTOR signaling pathway. PXN-AS1 regulated GS expression by binding to miR-635. Additionally, knockdown of PXN-AS1 attenuated BCR::ABL1-independent Imatinib resistance in CML cells via PXN-AS1/miR-635/GS/Gln/mTOR signaling pathway. CONCLUSIONS Thus, PXN-AS1 promotes GS-mediated BCR::ABL1-independent Imatinib resistance in CML cells via cell cycle signaling pathway.
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Affiliation(s)
- Yifei Li
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China
| | - Shiyi Yuan
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China
| | - Ying Zhou
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China
| | - Jingwen Zhou
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China
| | - Xuan Zhang
- Department of Oncology, Southwest Hospital, Army Medical University (Third Military Medical University), Chongqing, 400316, China
| | - Ping Zhang
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China
| | - Wenrui Xiao
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China
| | - Ying Zhang
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China.
| | - Jianchuan Deng
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China.
| | - Shifeng Lou
- Department of Hematology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing Medical University, Chongqing, 400010, China.
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Yu P, Ye J, Zhao S, Cai Y. lncRNAs are potential prognostic markers in patients with nasopharyngeal carcinoma in China: A systematic review and meta‑analysis. Mol Clin Oncol 2024; 20:11. [PMID: 38213659 PMCID: PMC10777463 DOI: 10.3892/mco.2023.2709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Accepted: 12/04/2023] [Indexed: 01/13/2024] Open
Abstract
The present study aimed to investigate the association between the expression profiles of long non-coding RNAs (lncRNAs) and the clinical characteristics or prognosis of patients with nasopharyngeal carcinoma (NPC). The findings presented in the present review may provide novel strategies for the prevention and treatment of NPC. For the analyses, medical databases, including PubMed, Web of Science and Cochrane library were searched using specific search terms, search strategies and screening strategies. Endnote X9 document management software was then employed to extract documents from January, 2010 to May, 2023. Data were extracted following the prescribed standards. Review Manager 5.4 and STATA 12.0 data analysis software were used for data analysis. A total of 490 publications were analyzed for inclusion. In total, 29 publications, composed of 24 studies with upregulated lncRNAs and 5 studies with downregulated lncRNAs, were included in the final analysis. The analysis revealed that the upregulation of lncRNAs was significantly associated with T stage, N stage and clinical stage, as well as with the overall survival (OS) and disease-free survival (DFS) of patients with NPC (P<0.05). However, there was no significant association between the upregulated lncRNAs and sex, M stage or relapse-free survival (RFS) (P>0.05). On the other hand, the suppression of lncRNA expression was significantly associated with N stage, M stage, clinical stage and the OS of patients with NPC (P<0.05), but not with T stage and RFS (P>0.05). Taken together, the present review demonstrates that the up- and downregulation of different lncRNAs was associated with an advanced clinical stage and a shorter OS of patients with NPC. Therefore, lncRNAs may serve as potential prognostic factors in NPC.
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Affiliation(s)
- Peng Yu
- School of Clinical Medicine, Guilin Medical University, Guilin, Guangxi Zhuang Autonomous Region 541199, P.R. China
| | - Jiemei Ye
- Guangxi Health Commission Key Laboratory of Molecular Epidemiology of Nasopharyngeal Carcinoma, Wuzhou Red Cross Hospital, Wuzhou, Guangxi Zhuang Autonomous Region 543002, P.R. China
| | - Shujian Zhao
- Guangxi Health Commission Key Laboratory of Molecular Epidemiology of Nasopharyngeal Carcinoma, Wuzhou Red Cross Hospital, Wuzhou, Guangxi Zhuang Autonomous Region 543002, P.R. China
| | - Yonglin Cai
- Guangxi Health Commission Key Laboratory of Molecular Epidemiology of Nasopharyngeal Carcinoma, Wuzhou Red Cross Hospital, Wuzhou, Guangxi Zhuang Autonomous Region 543002, P.R. China
- Department of Preventive Medicine, Wuzhou Cancer Center, Wuzhou, Guangxi Zhuang Autonomous Region 543002, P.R. China
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Taheri M, Safarzadeh A, Bahranian A, Eslami S, Dilmaghani NA, Ghafouri-Fard S, Sharifi G. Upregulation of MAPKAPK5-AS1, PXN-AS1 and URB1-AS1 lncRNAs in non-functioning pituitary adenoma. J Cell Mol Med 2023. [PMID: 37154079 DOI: 10.1111/jcmm.17763] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 04/18/2023] [Accepted: 04/27/2023] [Indexed: 05/10/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have been shown to be dysregulated in a variety of malignant and non-malignant lesions including non-functioning pituitary adenomas (NFPAs). In the current experimental study, we have selected six lncRNAs, namely MAPKAPK5-AS1, NUTM2B-AS1, ST7-AS1, LIFR-AS1, PXN-AS1 and URB1-AS1 to assess their expression in a cohort of Iranian patients with NFPA. MAPKAPK5-AS1, PXN-AS1 and URB1-AS1 were shown to be over-expressed in NFPA tissues compared with control samples (Expression ratios (95% CI) = 10 (3.94-25.36), 11.22 (4.3-28.8) and 9.33 (4.12-21.12); p values < 0.0001, respectively). The depicted ROC curves showed the AUC values of 0.73, 0.80 and 0.73 for MAPKAPK5-AS1, PXN-AS1 and URB1-AS1, respectively. Relative expression level of PXN-AS1 was associated with tumour subtype (p value = 0.49). Besides, relative expression levels of MAPKAPK5-AS1 and LIFR-AS1 were associated with gender of patients (p values = 0.043 and 0.01, respectively). Cumulatively, the current study indicates the possible role of MAPKAPK5-AS1, PXN-AS1 and URB1-AS1 lncRNAs in the pathogenesis of NFPAs.
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Affiliation(s)
- Mohammad Taheri
- Institute of Human Genetics, Jena University Hospital, Jena, Germany
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arash Safarzadeh
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arefe Bahranian
- Skull Base Research Center, Loghman Hakim Hospital, 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
| | - Nader Akbari Dilmaghani
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Soudeh Ghafouri-Fard
- Men's Health and Reproductive Health Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Guive Sharifi
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Li S, Ni Y, Li C, Xiang Q, Zhao Y, Xu H, Huang W, Wang Y, Wang Y, Zhan J, Liu Y. Long noncoding RNA SNHG1 alleviates high glucose-induced vascular smooth muscle cells calcification/senescence by post-transcriptionally regulating Bhlhe40 and autophagy via Atg10. J Physiol Biochem 2023; 79:83-105. [PMID: 36194366 PMCID: PMC9905201 DOI: 10.1007/s13105-022-00924-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 09/07/2022] [Indexed: 11/26/2022]
Abstract
Long noncoding RNAs (lncRNAs) are emerging regulators of vascular diseases, yet their role in diabetic vascular calcification/aging remains poorly understood. In this study, we identified a down-expressed lncRNA SNHG1 in high glucose (HG)-induced vascular smooth muscle cells (HA-VSMCs), which induced excessive autophagy and promoted HA-VSMCs calcification/senescence. Overexpression of SNHG1 alleviated HG-induced HA-VSMCs calcification/senescence. The molecular mechanisms of SNHG1 in HA-VSMCs calcification/senescence were explored by RNA pull-down, RNA immunoprecipitation, RNA stability assay, luciferase reporter assay, immunoprecipitation and Western blot assays. In one mechanism, SNHG1 directly interacted with Bhlhe40 mRNA 3'-untranslated region and increased Bhlhe40 mRNA stability and expression. In another mechanism, SNHG1 enhanced Bhlhe40 protein SUMOylation by serving as a scaffold to facilitate the binding of SUMO E3 ligase PIAS3 and Bhlhe40 protein, resulting in increased nuclear translocation of Bhlhe40 protein. Moreover, Bhlhe40 suppressed the expression of Atg10, which is involved in the process of autophagosome formation. Collectively, the protective effect of SNHG1 on HG-induced HA-VSMCs calcification/senescence is accomplished by stabilizing Bhlhe40 mRNA and promoting the nuclear translocation of Bhlhe40 protein. Our study could provide a novel approach for diabetic vascular calcification/aging.
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Affiliation(s)
- Shuang Li
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yuqing Ni
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Chen Li
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Qunyan Xiang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yan Zhao
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Hui Xu
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Wu Huang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yanjiao Wang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Yi Wang
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China
| | - Junkun Zhan
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China.
| | - Youshuo Liu
- Department of Geriatrics, Institute of Aging and Age-Related Disease Research, The Second Xiangya Hospital, Central SouthUniversity, Changsha, 410011, Hunan, China.
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5
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Yin XH, Wang XY, Liu SC, Yan L, He BR, Hao DJ, Yang M, Liu ZK. lncRNA HHIP-AS1/HHIP modulates osteogenic differentiation of BM-MSCs by regulating Hedgehog signaling pathway. Aging (Albany NY) 2022; 14:8839-8855. [DOI: 10.18632/aging.204381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Accepted: 10/27/2022] [Indexed: 11/16/2022]
Affiliation(s)
- Xin-Hua Yin
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
| | - Xiao-Yuan Wang
- Physical Examination Center, Xi'an International Medical Center Hospital, Xi’an, China
| | - Shi-Chang Liu
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
| | - Liang Yan
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
| | - Bao-Rong He
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
| | - Ding-Jun Hao
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
| | - Ming Yang
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
| | - Zhong-Kai Liu
- Department of Spine Surgery, Hong Hui Hospital, Xi’an Jiaotong University College of Medicine, Xi’an, China
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Wei D. MiR-486-5p specifically suppresses SAPCD2 expression, which attenuates the aggressive phenotypes of lung adenocarcinoma cells. Histol Histopathol 2022; 37:909-917. [PMID: 35467005 DOI: 10.14670/hh-18-463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND MiR-486-5p expression is restrained in lung adenocarcinoma (LUAD). However, much less has been understood on its role in LUAD. We aimed to explore the biofunctions of miR-486-5p in LUAD. METHODS A differential expression analysis based on The Cancer Genome Atlas-LUAD dataset was done to screen the differently expressed miRNAs and mRNAs. MiR-486-5p and SAPCD2 mRNA expression was analyzed by qRT-PCR, and protein level of SAPCD2 was assayed by western blot. Upregulation and downregulation of miR-486-5p or SAPCD2 were achieved by cell transfection. For cell function assays, the proliferation of cancer cells was examined by MTT assay. Cell apoptosis was assessed by flow cytometry and microscopy. Transwell assay was applied to evaluate cell migration and invasion. A dual-luciferase detection was employed to determine the miRNA-mRNA targeting relationship. RESULTS MiR-486-5p expression was notably reduced in LUAD tissue and cell lines. Upregulating miR-486-5p restrained the anti-apoptotic and proliferative abilities, as well as cell migratory and invasive phenotypes in LUAD cells. SAPCD2 was determined as one target of miR-486-5p. Also, SAPCD2 forced expression was able to attenuate the inhibitory impacts of miR-486-5p on the malignant phenotypes of LUAD cells. CONCLUSION MiR-486-5p suppressed cell malignant progression in LUAD by targeting SAPCD2, suggesting that the two may be targets for LUAD treatment.
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Affiliation(s)
- Desheng Wei
- Department of Thoracic Surgery, Shaoxing People's Hospital, Shaoxing, China.
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7
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Wang J, Hou F, Tang L, Xiao K, Yang T, Wang Z, Liu G. The interaction between long non-coding RNA LINC01564 and POU2F1 promotes the proliferation and metastasis of gastric cancer. J Transl Med 2022; 20:220. [PMID: 35562740 PMCID: PMC9101833 DOI: 10.1186/s12967-022-03391-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 02/23/2022] [Indexed: 12/24/2022] Open
Abstract
Background An increasing number of studies have demonstrated that long non-coding RNAs (lncRNAs) serve as key regulators in tumor development and progression. However, only a few lncRNAs have been functionally characterized in gastric cancer (GC). Methods Bioinformatics analysis was conducted to find lncRNAs that are associated with GC metastasis. RNA FISH, RIP, and RNA pull down assays were used to study the complementary binding of LINC01564 complementary to the 3′UTR of transcription factor POU2F1. The transcription activation of LINC01564 by POU2F1 as a transcription factor was examined by ChIP assay. In vitro assays such as MTT, cell invasion assay, and clonogenic assay were conducted to examined the impacts of LINC01564 and POU2F1 on GC cell proliferation and invasion. Experiments in vivo were performed to access the impacts of LINC01564 and POU2F1 on GC metastasis. Results The results showed that LINC01564 complementary bound to the 3′UTR of POU2F1 to form an RNA duplex, whereby stabilizing POU2F1 mRNA and increasing the enrichment in cells. The level of LINC01564 was also increased by POU2F1 through transcription activation. In vitro assays showed that LINC01564 promoted the proliferation, invasion and migration of GC cells through increasing POU2F1. In vivo experiments indicate the promotion of GC proliferation and metastasis by the interaction between LINC01564 and POU2F1. Conclusion Taken together, our results indicate that the interaction between LINC01564 and POU2F1 promotes the proliferation, migration and invasion of GC cells. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03391-x.
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Affiliation(s)
- Jixu Wang
- Department of Interventional Vascular Surgery, Affiliated Hospital (Clinical College) of Xiangnan University and Key Laboratory of Medical Imaging and Artificial Intelligence of Hunan Province, Xiangnan University, 25 Renmin West Road, Chenzhou, 423000, Hunan, China
| | - Futao Hou
- Department of General Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, 61 the West Jiefang Road, Furong District, Changsha, 410003, Hunan, China
| | - Lusheng Tang
- Department of Interventional Vascular Surgery, Affiliated Hospital (Clinical College) of Xiangnan University and Key Laboratory of Medical Imaging and Artificial Intelligence of Hunan Province, Xiangnan University, 25 Renmin West Road, Chenzhou, 423000, Hunan, China
| | - Ke Xiao
- Department of Gastroduodenal and Pancreatic Surgery, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, China
| | - Tengfei Yang
- Department of Interventional Vascular Surgery, Affiliated Hospital (Clinical College) of Xiangnan University and Key Laboratory of Medical Imaging and Artificial Intelligence of Hunan Province, Xiangnan University, 25 Renmin West Road, Chenzhou, 423000, Hunan, China
| | - Zhiqiang Wang
- Department of Interventional Vascular Surgery, Affiliated Hospital (Clinical College) of Xiangnan University and Key Laboratory of Medical Imaging and Artificial Intelligence of Hunan Province, Xiangnan University, 25 Renmin West Road, Chenzhou, 423000, Hunan, China.
| | - Gu Liu
- Department of Gastrointestinal Surgery, Chenzhou First People's Hospital and The First Affiliated Hospital of Xiangnan University, 102 Luojiajing, Chenzhou, 423000, Hunan, China.
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Baker AL, Du L. The Function and Regulation of SAPCD2 in Physiological and Oncogenic Processes. J Cancer 2022; 13:2374-2387. [PMID: 35517423 PMCID: PMC9066194 DOI: 10.7150/jca.65949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Accepted: 03/24/2022] [Indexed: 12/02/2022] Open
Abstract
The Suppressor APC Domain Containing 2 (SAPCD2) gene, also known by its aliases p42.3 and c9orf140, encodes a protein with an approximate molecular weight of 42.3 kDa. It was initially recognized as a cell cycle-associated protein involved in mitotic progression. Since the initial discovery of this gene, emerging evidence has suggested that its functions extend beyond that of regulating cell cycle progression to include modulation of planar polarization of cell progenitors and determination of cell fate throughout embryonic development. The underlying mechanisms driving such functions have been partially elucidated. However, the detailed mechanisms of action remain to be further characterized. The expression level of SAPCD2 is high throughout embryogenesis but is generally absent in healthy postnatal tissues, with restored expression in adult tissues being associated with various disease states. The pathological consequences of its aberrant expression have been investigated, most notably in the development of several types of cancers. The role of SAPCD2 in tumorigenesis has been supported by in vitro, in vivo, and retrospective clinical investigations and the mechanisms underlying its oncogenic function have been partially revealed. The potential of SAPCD2 as a diagnostic marker and therapeutic target of cancers have also been explored and have shown great promise. However, many questions pertaining to its oncogenic mechanisms as well as its value as a diagnostic marker and therapeutic target remain to be answered. In addition to its function as an oncogene, an involvement of SAPCD2 in other pathological processes such as inflammation has also been implicated and provides additional directions that warrant future investigation. This article reviews the current understanding of the normal cellular functions of SAPCD2 and the relevance of SAPCD2 in disease development with a primary focus on tumorigenesis. The mechanisms that regulate p43.2 expression, including the potential role of microRNAs in regulating its expression, are also reviewed. To the best of our knowledge, we are the first to comprehensively review the published findings regarding the physiological and pathological functions of this gene.
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Affiliation(s)
| | - Liqin Du
- Department of Chemistry and Biochemistry, Texas State University, 601 University Drive, San Marcos, TX, 78666, USA
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Zhou HZ, Li F, Cheng ST, Xu Y, Deng HJ, Gu DY, Wang J, Chen WX, Zhou YJ, Yang ML, Ren JH, Zheng L, Huang AL, Chen J. DDX17-regulated alternative splicing that produced an oncogenic isoform of PXN-AS1 to promote HCC metastasis. Hepatology 2022; 75:847-865. [PMID: 34626132 PMCID: PMC9304246 DOI: 10.1002/hep.32195] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Revised: 09/09/2021] [Accepted: 10/01/2021] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS The mechanism underlying HCC metastasis remains unclear, many oncogenes are known to regulate this process. However, the role of alternative splicing (AS) in pro-metastatic HCC is poorly understood. APPROACH AND RESULTS By performing RNA sequencing on nine pairs of primary HCC tissues with extrahepatic metastasis (EHMH) and nine pairs of metastasis-free HCC (MFH) tissues, we depicted the AS landscape in HCC and found a higher frequency of AS events in EHMH compared with MFH. Moreover, 28 differentially expressed splicing regulators were identified in EHMH compared with MFH. Among these, DEAD-box RNA helicase 17 (DDX17) was significantly up-regulated in EHMH and was strongly associated with patient outcome. Functional studies indicated that DDX17 knockout inhibited the degradation of the extracellular matrix, and diminished the invasive ability of HCC cells. A significant reduction in lung metastasis induced by DDX17 deficiency was also demonstrated in a diethylnitrosamine-induced DDX17HKO mouse model. Mechanistically, high DDX17 induced intron 3 retention of PXN-AS1 and produced a transcript (termed PXN-AS1-IR3). The transcript PXN-AS1-IR3 acted as an important promoter of HCC metastasis by inducing MYC transcription activation via recruiting the complex of testis expressed 10 and p300 to the MYC enhancer region, which led to transcriptional activation of several metastasis-associated downstream genes. Finally, the PXN-AS1-IR3 level was significantly higher in serum and HCC tissues with extrahepatic metastasis. CONCLUSIONS DDX17 and PXN-AS1-IR3 act as important metastatic promoters by modulating MYC signaling, suggesting that DDX17 and PXN-AS1-IR3 may be potential prognostic markers for metastatic HCC.
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Affiliation(s)
- Hong-Zhong Zhou
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina.,Department of Clinical LaboratoryInstitute of Translational MedicineThe First Affiliated Hospital of Shenzhen University, Shenzhen Second People's HospitalShenzhenChina
| | - Fan Li
- Department of Endocrine and Breast SurgeryThe First Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Sheng-Tao Cheng
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Yong Xu
- Department of Clinical LaboratoryInstitute of Translational MedicineThe First Affiliated Hospital of Shenzhen University, Shenzhen Second People's HospitalShenzhenChina
| | - Hai-Jun Deng
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Da-Yong Gu
- Department of Clinical LaboratoryInstitute of Translational MedicineThe First Affiliated Hospital of Shenzhen University, Shenzhen Second People's HospitalShenzhenChina
| | - Jin Wang
- Department of Clinical LaboratoryInstitute of Translational MedicineThe First Affiliated Hospital of Shenzhen University, Shenzhen Second People's HospitalShenzhenChina
| | - Wei-Xian Chen
- Department of Clinical LaboratoryThe Second Affiliated Hospital of Chongqing Medical UniversityChongqingChina
| | - Yu-Jiao Zhou
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Min-Li Yang
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Ji-Hua Ren
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Lu Zheng
- Department of Hepatobiliary Surgerythe Second Affiliated Hospital of Army Medical UniversityChongqingChina
| | - Ai-Long Huang
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
| | - Juan Chen
- The Key Laboratory of Molecular Biology of Infectious Diseases designated by the Chinese Ministry of EducationChongqing Medical UniversityChongqingChina
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10
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Li L, Cao Y, Fan Y, Li R. Gene signature to predict prognostic survival of hepatocellular carcinoma. Open Med (Wars) 2022; 17:135-150. [PMID: 35071775 PMCID: PMC8742913 DOI: 10.1515/med-2021-0405] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 10/18/2021] [Accepted: 11/09/2021] [Indexed: 12/11/2022] Open
Abstract
Hepatocellular carcinoma (HCC) has a high incidence and poor prognosis and is the second most fatal cancer, and certain HCC patients also show high heterogeneity. This study developed a prognostic model for predicting clinical outcomes of HCC. RNA and microRNA (miRNA) sequencing data of HCC were obtained from the cancer genome atlas. RNA dysregulation between HCC tumors and adjacent normal liver tissues was examined by DESeq algorithms. Survival analysis was conducted to determine the basic prognostic indicators. We identified competing endogenous RNA (ceRNA) containing 15,364 pairs of mRNA–long noncoding RNA (lncRNA). An imbalanced ceRNA network comprising 8 miRNAs, 434 mRNAs, and 81 lncRNAs was developed using hypergeometric test. Functional analysis showed that these RNAs were closely associated with biosynthesis. Notably, 53 mRNAs showed a significant prognostic correlation. The least absolute shrinkage and selection operator’s feature selection detected four characteristic genes (SAPCD2, DKC1, CHRNA5, and UROD), based on which a four-gene independent prognostic signature for HCC was constructed using Cox regression analysis. The four-gene signature could stratify samples in the training, test, and external validation sets (p <0.01). Five-year survival area under ROC curve (AUC) in the training and validation sets was greater than 0.74. The current prognostic gene model exhibited a high stability and accuracy in predicting the overall survival (OS) of HCC patients.
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Affiliation(s)
- Li Li
- Department of Oncology, The Comprehensive Cancer Centre of Drum Tower Hospital, Nanjing Drum Tower Hospital Clinical College of Nanjing Medical University , Nanjing , Jiangsu, 210000 , China
| | - Yundi Cao
- Department of Medical Oncology, Affiliated Taikang Xianlin Drum Tower Hospital, Medical School of Nanjing University , Nanjing , Jiangsu , China
| | - YingRui Fan
- Department of Medical Oncology, Affiliated Taikang Xianlin Drum Tower Hospital, Medical School of Nanjing University , Nanjing , Jiangsu , China
| | - Rong Li
- Department of Medical Oncology, Affiliated Taikang Xianlin Drum Tower Hospital, Medical School of Nanjing University , Nanjing , Jiangsu , China
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11
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Ma B, Cao L, Li Y. A novel 10-gene immune-related lncRNA signature model for the prognosis of colorectal cancer. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2021; 18:9743-9760. [PMID: 34814366 DOI: 10.3934/mbe.2021477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
BACKGROUND The tumor immune microenvironment of colorectal cancer (CRC) affects tumor development, prognosis and immunotherapy strategies. Recently, immune-related lncRNA were shown to play vital roles in the tumor immune microenvironment. The objective of this study was to identify lncRNAs involved in the immune response, tumorigenesis and progression of CRC and to establish an immune-related lncRNA signature for predicting the prognosis of CRC. METHODS We used data retrieved from the cancer genome atlas (TCGA) dataset to construct a 10-gene immune-related lncRNA pair (IRLP) signature model using a method based on the ranking and comparison of paired gene expression in CRC. The clinical prognosis, immune checkpoints and lncRNA-protein networks were analyzed to evaluate the signature. RESULTS The signature was closely associated with overall survival of CRC patients (p < 0.001 in both of the training and validating cohorts) and the 3-year AUC values for the training and validating cohorts were 0.884 and 0.739, respectively. And, there were positive correlations between the signature and age (p = 0.048), clinical stage (p < 0.01), T stage (p < 0.01), N stage (p < 0.001) and M stage (p < 0.01). In addition, the signature model appeared to be highly relevant to some checkpoints, including CD160, TNFSF15, HHLA2, IDO2 and KIR3DL1. Further, molecular functional analysis and lncRNA-protein networks were applied to understand the molecular mechanisms underlying the carcinogenic effect and progression. CONCLUSION The 10-gene IRLP signature model is an independent prognostic factor for CRC patient and can be utilized for the development of immunotherapy.
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Affiliation(s)
- Bin Ma
- Department of Colorectal Surgery, Liaoning Cancer Hospital & Institute (Cancer Hospital of China Medical University), Shenyang, China
| | - Lianqun Cao
- Department of Colorectal Surgery, Liaoning Cancer Hospital & Institute (Cancer Hospital of China Medical University), Shenyang, China
| | - Yongmin Li
- Department of Colorectal Surgery, Liaoning Cancer Hospital & Institute (Cancer Hospital of China Medical University), Shenyang, China
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12
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Yang Z, Ding H, Pan Z, Li H, Ding J, Chen Q. YY1-inudced activation of lncRNA DUXAP8 promotes proliferation and suppresses apoptosis of triple negative breast cancer cells through upregulating SAPCD2. Cancer Biol Ther 2021; 22:216-224. [PMID: 33683171 DOI: 10.1080/15384047.2021.1881201] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Double homeobox A pseudogene 8 (DUXAP8) belongs to long non-coding RNAs (lncRNAs), which has been proven to promote the biological processes of multiple human cancers. Triple-negative breast cancer (TNBC) is the leading cause of cancer-related death in women worldwide. However, the specific role of lncRNA DUXAP8 and its underlying mechanism in TNBC remains to be unclear. We detected the expression of DUXAP8 in TNBC cells through qRT-PCR analysis. The effects of DUXAP8 silencing on TNBC cell proliferation and apoptosis were identified using CCK-8 assay, EdU assay, flow cytometry analysis and TUNEL assay. The downstream microRNA (miRNA) and messenger RNA (mRNA) of DUXAP8 were searched out through bioinformatics analysis and mechanism experiments. Rescue assays were conducted to verify the involvement of suppressor APC domain containing 2 (SAPCD2) in DUXAP8-mediated TNBC cell proliferation and apoptosis. DUXAP8 was highly expressed in TNBC cells compared to that in normal breast cells. Knockdown of DUXAP8 inhibited TNBC cell proliferation and accelerated cell apoptosis. DUXAP8 interacted with miR-29a-3p and thus enhanced the expression of SAPCD2. Moreover, YY1 transcription factor could bind to DUXAP8 promoter to activate the transcription of DUXAP8. YY1-induced transcriptional activation of DUXAP8 promotes TNBC cell growth through miR-29a-3p/SAPCD2 axis.
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Affiliation(s)
- Zhen Yang
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Hongjian Ding
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Zhiyu Pan
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Huaqing Li
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Junbin Ding
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai, China
| | - Qian Chen
- Department of General Surgery, Minhang Hospital, Fudan University, Shanghai, China
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13
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Chen J, Liu Y, Min J, Wang H, Li F, Xu C, Gong A, Xu M. Alternative splicing of lncRNAs in human diseases. Am J Cancer Res 2021; 11:624-639. [PMID: 33791145 PMCID: PMC7994174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023] Open
Abstract
Alternative splicing (AS), a vital post-transcription process for eukaryote gene expression regulating, can efficiently improve gene utilization and increase the variety of RNA transcripts and proteins. However, AS of non-coding RNAs (ncRNAs) has not been paid enough attention to compared with that of protein-coding RNAs (mRNAs) for a long time. In fact, AS of ncRNAs, especially long noncoding RNAs (lncRNAs), also plays a significant regulatory role in the human disease. Recently, some bifunctional genes transcribed into both mRNA and lncRNA transcripts by AS have been observed. Here, we focus on the AS of lncRNAs and bifunctional genes producing lncRNA transcripts and propose a strategy for the future research of lncRNA AS.
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Affiliation(s)
- Jiaxi Chen
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
| | - Yawen Liu
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
| | - Jingyu Min
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
| | - Huizhi Wang
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
| | - Feifan Li
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
| | - Chunhui Xu
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
| | - Aihua Gong
- Department of Cell Biology, School of Medicine, Jiangsu UniversityZhenjiang 212013, Jiangsu, China
| | - Min Xu
- Department of Gastroenterology, Affiliated Hospital of Jiangsu University, Jiangsu UniversityZhenjiang 212001, Jiangsu, China
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14
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Lin QY, Qi QL, Hou S, Chen Z, Zhang L, Zhao HG, Lin CH. LncRNA PVT1 Acts as a Tumor Promoter in Thyroid Cancer and Promotes Tumor Progression by Mediating miR-423-5p-PAK3. Cancer Manag Res 2021; 12:13403-13413. [PMID: 33408513 PMCID: PMC7779291 DOI: 10.2147/cmar.s283443] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/05/2020] [Indexed: 01/05/2023] Open
Abstract
Introduction Thyroid cancer (TC) is an endocrine tumor whose risk of onset has been rising, so the deep understanding of its molecular mechanism helps formulate new treatment strategies. Methods This paper was aimed at exploring the regulatory mechanism of long non-coding RNA (LncRNA) plasmacytoma variant translocation 1 (PVT1) in TC. The expression of PVT1, miR-423-5p and p21-activated kinase 3 (PAK3) in TC tissues and cell lines was detected by real-time PCR. PAK3 levels were detected by Western blot. Regulatory relationships between target genes and the proliferation, invasion and apoptosis of cells and genes were analyzed. Results PVT1 and PAK3 upregulated while miR-423-5p downregulated in the tissues and cell lines. PVT1 downregulation inhibited TC cells from malignantly proliferating and invading, and promoted their apoptosis. PVT1 specifically regulated miR-423-5p, and its overexpression could weaken the anti-tumor effect of this miR on TC cells. In addition, miR-423-5p directly targeted PAK3, and knocking down its expression could weaken the inhibitory effect of PAK3 downregulation on TC progression. Besides, PVT1 acted as a competitive endogenous RNA to sponge this miR and thus regulate PAK3 expression. Discussion In conclusion, PVT1 can mediate the molecular mechanism of the miR-423-5p-PAK3 axis regulatory network on regulating TC, so it is a new direction of treating the disease.
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Affiliation(s)
- Qiu-Yu Lin
- Nuclear Medicine Department, The First Hospital of Jilin University, Changchun City 130000, Jilin Province, People's Republic of China
| | - Qian-Le Qi
- Nuclear Medicine Department, The First Hospital of Jilin University, Changchun City 130000, Jilin Province, People's Republic of China
| | - Sen Hou
- Nuclear Medicine Department, The First Hospital of Jilin University, Changchun City 130000, Jilin Province, People's Republic of China
| | - Zhen Chen
- Chengdu Xinke Pharmaceutical Co., LTD, Chengdu City 610000, Sichuan Province, People's Republic of China
| | - Laney Zhang
- Biological Sciences at Cornell University (2022), Ithaca, NY, USA
| | - Hong-Guang Zhao
- Nuclear Medicine Department, The First Hospital of Jilin University, Changchun City 130000, Jilin Province, People's Republic of China
| | - Cheng-He Lin
- Nuclear Medicine Department, The First Hospital of Jilin University, Changchun City 130000, Jilin Province, People's Republic of China
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15
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Zhu B, Wu Y, Niu L, Yao W, Xue M, Wang H, Yang J, Li J, Fan W. Silencing SAPCD2 Represses Proliferation and Lung Metastasis of Fibrosarcoma by Activating Hippo Signaling Pathway. Front Oncol 2021; 10:574383. [PMID: 33384953 PMCID: PMC7770171 DOI: 10.3389/fonc.2020.574383] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 11/13/2020] [Indexed: 12/18/2022] Open
Abstract
The primary problem associated with fibrosarcoma is its high potential to metastasize to the lung. Aberrant expression of SAPCD2 has been widely reported to be implicated in the progression and metastasis in multiple cancer types. However, the clinical significance and biological roles of SAPCD2 in fibrosarcoma remain unknown. Here, we reported that SAPCD2 expression was markedly elevated in fibrosarcoma tissues, and its expression was differentially upregulated in fibrosarcoma cell lines compared with that in several primary fibroblast cell lines. Kaplan-Meier survival analysis revealed that SAPCD2 overexpression was significantly correlated with early progression and metastasis, and poor prognosis in fibrosarcoma patients. Our results further showed that silencing SAPCD2 inhibited the proliferation and increased the apoptosis of fibrosarcoma cells in vitro. Importantly, silencing SAPCD2 repressed lung metastasis of fibrosarcoma cells in vivo. Mechanistic investigation further demonstrated that silencing SAPCD2 inhibited the proliferation and lung metastasis of fibrosarcoma cells by activating the Hippo signaling pathway, as evidenced by the finding that constitutively active YAP1, YAP1-S127A, significantly reversed the inhibitory effect of SAPCD2 downregulation on the colony formation and anchorage-independent growth capabilities of fibrosarcoma cells, as well as the stimulatory effect on the apoptotic ratio of fibrosarcoma cells. In conclusion, SAPCD2 promotes the proliferation and lung metastasis of fibrosarcoma cells by regulating the activity of Hippo signaling, and this mechanism represents a potential therapeutic target for the treatment of lung metastatic fibrosarcoma.
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Affiliation(s)
- Bowen Zhu
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Yanqin Wu
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Lizhi Niu
- Fuda Cancer Hospital, Jinan University School of Medicine, Guangzhou, China.,Fudan Institute of Cryosurgery for Cancer, Jinan University School of Medicine, Guangzhou, China
| | - Wang Yao
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Miao Xue
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Hongyu Wang
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jianyong Yang
- Department of Interventional Radiology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China.,Department of Medical Imaging, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jiaping Li
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Wenzhe Fan
- Department of Interventional Oncology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
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16
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You H, Wang S, Yu S. KIF9-AS1 promotes nasopharyngeal carcinoma progression by suppressing miR-16. Oncol Lett 2020; 20:241. [PMID: 32973955 PMCID: PMC7509506 DOI: 10.3892/ol.2020.12104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Accepted: 06/19/2020] [Indexed: 01/07/2023] Open
Abstract
Long non-coding RNAs (lncRNAs) have been reported to serve a crucial role in the progression of nasopharyngeal carcinoma (NPC); however, the underlying molecular mechanisms of lncRNA KIF9-AS1 in the tumorigenesis of NPC remains poorly understood. Reverse transcription-quantitative PCR was used to analyze the expression levels of KIF9-AS1 and microRNA (miR)-16, and Cell Counting Kit-8, wound healing and Transwell assays were used to determine the cell viability, invasion and migration, respectively, of NPC cells. In addition, a dual-luciferase reporter assay was used to analyze the direct interaction between KIF9-AS1 and miR-16. NPC stage was classified according to the seventh edition of the AJCC staging system. The results revealed that KIF9-AS1 expression levels were upregulated in NPC tissues and cell lines. In addition, miR-16 was demonstrated to directly interact with KIF9-AS1 and inhibit KIF9-AS1 expression levels, whereas the miR-16 inhibitor rescued the effects of the KIF9-AS1-knockdown in NPC cells. Furthermore, the expression levels of KIF9-AS1 were upregulated, while those of miR-16 were downregulated in NPC tissues. Notably, the expression levels of KIF9-AS1 were observed to be significantly more upregulated in advanced tumors (III–IV vs. I–II) and patients with high KIF9-AS1 expression levels exhibited a worse prognosis. In conclusion, the findings of the present study suggested that KIF9-AS1 may promote the progression of NPC by targeting miR-16, thus KIF9-AS1 may be a novel molecular target for NPC therapy.
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Affiliation(s)
- Huizeng You
- Department of Otolaryngology, Weifang Traditional Chinese Hospital, Weifang, Shandong 261041, P.R. China
| | - Shuyong Wang
- Department of Otolaryngology, Weifang Traditional Chinese Hospital, Weifang, Shandong 261041, P.R. China
| | - Sa Yu
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhuji People's Hospital of Zhejiang Province, Zhuji, Zhejiang 311800, P.R. China
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17
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E. A. R. ENS, Irekeola AA, Yean Yean C. Diagnostic and Prognostic Indications of Nasopharyngeal Carcinoma. Diagnostics (Basel) 2020; 10:E611. [PMID: 32825179 PMCID: PMC7554987 DOI: 10.3390/diagnostics10090611] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2020] [Revised: 08/11/2020] [Accepted: 08/18/2020] [Indexed: 02/06/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a disease that is highly associated with the latent infection of Epstein-Barr virus. The absence of obvious clinical signs at the early stage of the disease has made early diagnosis practically impossible, thereby promoting the establishment and progression of the disease. To enhance the stride for a reliable and less invasive tool for the diagnosis and prognosis of NPC, we synopsize biomarkers belonging to the two most implicated biological domains (oncogenes and tumor suppressors) in NPC disease. Since no single biomarker is sufficient for diagnosis and prognosis, coupled with the fact that the known established methods such as methylation-specific polymerase chain reaction (PCR), multiplex methylation-specific PCR, microarray assays, etc., can only accommodate a few biomarkers, we propose a 10-biomarker panel (KIT, LMP1, PIKC3A, miR-141, and miR-18a/b (oncogenic) and p16, RASSF1A, DAP-kinase, miR-9, and miR-26a (tumor suppressors)) based on their diagnostic and prognostic values. This marker set could be explored in a multilevel or single unified assay for the diagnosis and prognosis of NPC. If carefully harnessed and standardized, it is hoped that the proposed marker set would help transform the diagnostic and prognostic realm of NPC, and ultimately, help prevent the life-threatening late-stage NPC disease.
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Affiliation(s)
- Engku Nur Syafirah E. A. R.
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (E.N.S.E.A.R.); (A.A.I.)
| | - Ahmad Adebayo Irekeola
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (E.N.S.E.A.R.); (A.A.I.)
- Department of Biological Sciences, Microbiology Unit, College of Natural and Applied Sciences, Summit University Offa, Offa PMB 4412, Kwara State, Nigeria
| | - Chan Yean Yean
- Department of Medical Microbiology and Parasitology, School of Medical Sciences, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia; (E.N.S.E.A.R.); (A.A.I.)
- Hospital Universiti Sains Malaysia, Universiti Sains Malaysia, Health Campus, Kubang Kerian 16150, Kelantan, Malaysia
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18
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Xiao Y, Li C, Wang H, Liu Y. LINC00265 targets miR-382-5p to regulate SAT1, VAV3 and angiogenesis in osteosarcoma. Aging (Albany NY) 2020; 12:20212-20225. [PMID: 33109774 PMCID: PMC7655165 DOI: 10.18632/aging.103762] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/06/2020] [Indexed: 02/06/2023]
Abstract
We explored the mechanism by which LINC00265 regulates angiogenesis of osteosarcoma cells via the miR-382-5p/spermidine/spermine N1-acetyltransferase-1 (SAT1) and miR-382-5p/vav guanine nucleotide exchange factor 3 (VAV3) axis. Cell scratch assay, Transwell assay and tube formation assay were applied to detect cell migration, invasion and tube formation abilities. The effects of LINC00265 targeting miR-382-5p in osteosarcoma in vivo were studied using a tumour-burden assay. A total of 70 genes potentially involved in osteosarcoma angiogenesis were identified, and a Gene Ontology (GO) analysis found that SAT1 and VAV3 were closely related to angiogenesis. Bioinformatics analysis and clinical experiments confirmed that LINC00265, SAT1 and VAV3 were overexpressed in osteosarcoma and related to a poor prognosis, whereas miR-382-5p was downregulated and associated with a poor prognosis. It was confirmed that LINC00265 promoted the proliferation, migration, invasion and angiogenesis of osteosarcoma cells by targeting miR-382-5p to mediate SAT1 and VAV3. Collectively, LINC00265 might promote proliferation, migration, invasion and angiogenesis by targeting miR-382-5p/SAT1 and miR-382-5p/VAV3 in osteosarcoma.
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Affiliation(s)
- Ying Xiao
- Department of Operating Center, The First Hospital of Jilin University, Changchun 130000, Jilin, China
| | - Chunling Li
- Department of Operating Center, The First Hospital of Jilin University, Changchun 130000, Jilin, China
| | - Hongyue Wang
- Department of Nephrology, The First Hospital of Jilin University, Changchun 130000, Jilin, China
| | - Yijun Liu
- Department of Orthopaedics, The First Hospital of Jilin University, Changchun 130000, Jilin, China
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19
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Yue Z, Shusheng J, Hongtao S, Shu Z, Lan H, Qingyuan Z, Shaoqiang C, Yuanxi H. Silencing DSCAM-AS1 suppresses the growth and invasion of ER-positive breast cancer cells by downregulating both DCTPP1 and QPRT. Aging (Albany NY) 2020; 12:14754-14774. [PMID: 32716908 PMCID: PMC7425442 DOI: 10.18632/aging.103538] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Accepted: 05/20/2020] [Indexed: 01/06/2023]
Abstract
Breast cancer (BC) remains a significant threat to the health of women; however, the mechanism underlying the initiation and progression of BC is poorly understood. We analyzed data from the Gene Expression Omnibus database and The Cancer Genome Atlas datasets to identify differentially expressed genes between BC and normal tissues. The roles of dCTP pyrophosphatase 1 (DCTPP1) and quinolinate phosphoribosyltransferase (QPRT) in BC cells were investigated after knocking down or overexpressing the genes. The regulatory effects of Down syndrome cell adhesion molecule antisense RNA 1 (DSCAM-AS1) on DCTPP1 and QPRT expression were determined using luciferase reporter, RNA immunoprecipitation, RNA pull-down, chromatin immunoprecipitation, and fluorescence in situ hybridization assays. DCTPP1 and QPRT were overexpressed in BC compared to normal tissues. Overexpression of DCTPP1 and QPRT was associated with poor BC progression and promoted growth, migration, and invasion of MCF7 and T47D cells but inhibited apoptosis. DSCAM-AS1 increased QPRT expression via competitively binding miRNA-150-5p and miRNA-2467-3p. DSCAM-AS1 promoted DCTPP1 gene transcription by affecting H3K27 acetylation and enhanced DCTPP1 mRNA stability by binding to the 3′ untranslated region, which collectively resulted in DCTPP1 overexpression. Overall, DSCAM-AS1 knockdown decreased both DCTPP1 and QPRT expression, inhibiting the growth, migration, and invasion of estrogen receptor-positive BC.
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Affiliation(s)
- Zhang Yue
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Jia Shusheng
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Song Hongtao
- Department of Pathology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Zhao Shu
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Huang Lan
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Zhang Qingyuan
- Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China
| | - Cheng Shaoqiang
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
| | - Huang Yuanxi
- Department of Breast Surgery, Harbin Medical University Cancer Hospital, Harbin, China
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20
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Chen H, Hou G, Yang J, Chen W, Guo L, Mao Q, Ge J, Zhang X. SOX9-activated PXN-AS1 promotes the tumorigenesis of glioblastoma by EZH2-mediated methylation of DKK1. J Cell Mol Med 2020; 24:6070-6082. [PMID: 32329150 PMCID: PMC7294137 DOI: 10.1111/jcmm.15189] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/26/2020] [Accepted: 02/25/2020] [Indexed: 01/09/2023] Open
Abstract
Increasing evidence has validated the essential regulation of long non-coding RNAs (lncRNAs) in the biological process of tumours. LncRNA PXN-AS1 has been discovered to be as a tumour suppressor in pancreatic cancer; however, its function and mechanism remain greatly unknown in glioblastoma (GBM). Our present study indicated that PXN-AS1 was highly expressed in GBM tissues and cells. Besides, the knock-down of PXN-AS1 was closely associated with the inhibitory proliferation and inducing apoptosis of GBM cells. PXN-AS1 inhibition was also found to restrain GBM tumour growth. Importantly, SOX9 functioned as a transcription factor and activated PXN-AS1 expression, and overexpressed PXN-AS1 rescued the inhibitory role of down-regulated SOX9 in GBM cell growth. Subsequently, it was discovered that PXN-AS1 activated Wnt/β-catenin pathway. DKK1 was widely known as an inhibitor gene of Wnt/β-catenin pathway, and its expression was negatively associated with PXN-AS1 and SOX9. Interestingly, we found that PXN-AS1 could recruit EZH2 to mediate the H3K27me3 level of DKK1 promoter. Restoration experiments manifested that DKK1 knock-down counteracted PXN-AS1 depletion-mediated repression in GBM cell growth. All facts pointed out that PXN-AS1 might be of importance in exploring the therapeutic strategies of GBM.
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Affiliation(s)
- Hongjin Chen
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
| | - Guoqiang Hou
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
| | - Jian Yang
- Department of Pediatric NeurosurgeryXin Hua Hospital affiliated to School of MedicineShanghai Jiao Tong UniversityShanghaiChina
| | - Weilin Chen
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
| | - Liemei Guo
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
| | - Qin Mao
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
| | - Jianwei Ge
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
| | - Xiaohua Zhang
- Department of NeurosurgerySchool of MedicineRenji HospitalJiaotong UniversityShanghaiChina
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Li L, Zhang F. Novel long noncoding RNA LINC01385 promotes nasopharyngeal carcinoma proliferation via the miR-140-3p/Twist1 signaling pathway. Cell Cycle 2020; 19:1352-1362. [PMID: 32264733 PMCID: PMC7469515 DOI: 10.1080/15384101.2020.1750133] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 12/19/2019] [Accepted: 03/11/2020] [Indexed: 10/24/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) have been verified as a key modulator in tumor progression. However, the functions of lncRNAs in nasopharyngeal carcinoma (NPC) remain unclear. In the present study, we explored lncRNAs expression patterns in NPC tissues by GEO dataset and selected the high expression lncRNA (LINC01385) to further study. Our data showed that LINC01385 expression was significantly increased NPC and correlated with advanced clinical features and poor prognosis. Function assays showed that knockdown of LINC01385 expression reduced the proliferation and invasion abilities of NPC cells in vitro. In mechanism, LINC01385 acted as a molecular sponge of miR-140-3p in NPC cells, Twist1 mRNA was validated as a direct target of miR-140-3p in NPC cells. The effects of the LINC01385 knockdown on malignant characteristics of NPC cells were greatly attenuated by miR-140-3p inhibition or Twist1 overexpression. Thus, we illustrated that LINC01385 aggravated the progression of NPC by sponging miR-140-3p and upregulating Twist1 expression, which implied LINC01385 might serve as a new potential therapeutic target for NPC treatment.
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Affiliation(s)
- Lu Li
- Department of Otology, The First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
| | - Feng Zhang
- Department of Otology, The First Affiliated Hospital of Zhengzhou University , Zhengzhou, Henan, China
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22
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Transcriptomic Response of Breast Cancer Cells MDA-MB-231 to Docosahexaenoic Acid: Downregulation of Lipid and Cholesterol Metabolism Genes and Upregulation of Genes of the Pro-Apoptotic ER-Stress Pathway. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17103746. [PMID: 32466294 PMCID: PMC7277693 DOI: 10.3390/ijerph17103746] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 12/18/2022]
Abstract
Despite considerable efforts in prevention and therapy, breast cancer remains a major public health concern worldwide. Numerous studies using breast cancer cell lines have shown the antiproliferative and pro-apoptotic effects of docosahexaenoic acid (DHA). Some studies have also demonstrated the inhibitory effect of DHA on the migration and invasion of breast cancer cells, making DHA a potential anti-metastatic agent. Thus, DHA has shown its potential as a chemotherapeutic adjuvant. However, the molecular mechanisms triggering DHA effects remain unclear, and the aim of this study was to provide a transcriptomic basis for further cellular and molecular investigations. Therefore, MDA-MB-231 cells were treated with 100 µM DHA for 12 h or 24 h before RNA-seq analysis. The results show the great impact of DHA-treatment on the transcriptome, especially after 24 h of treatment. The impact of DHA is particularly visible in genes involved in the cholesterol biosynthesis pathway that is strongly downregulated, and the endoplasmic reticulum (ER)-stress response that is, conversely, upregulated. This ER-stress and unfolded protein response could explain the pro-apoptotic effect of DHA. The expression of genes related to migration and invasion (especially SERPINE1, PLAT, and MMP11) is also impacted by DHA. In conclusion, this transcriptomic analysis supports the antiproliferative, pro-apoptotic and anti-invasive effects of DHA, and provides new avenues for understanding its molecular mechanisms.
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Jia X, Niu P, Xie C, Liu H. Long noncoding RNA PXN-AS1-L promotes the malignancy of nasopharyngeal carcinoma cells via upregulation of SAPCD2. Cancer Med 2019; 8:4278-4291. [PMID: 31173488 PMCID: PMC6675719 DOI: 10.1002/cam4.2227] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 04/02/2019] [Accepted: 04/23/2019] [Indexed: 01/19/2023] Open
Abstract
Accumulating evidences highlight the critical roles of long noncoding RNAs (lncRNAs) in a variety of cancers. LncRNA PXN‐AS1‐L was previously shown to exert oncogenic roles in hepatocellular carcinoma. However, the expression, role, and molecular mechanism of PXN‐AS1‐L in nasopharyngeal carcinoma (NPC) malignancy remain unknown. Here, we determined that PXN‐AS1‐L is upregulated in NPC tissues and cell lines. Increased expression of PXN‐AS1‐L predicts worse prognosis of NPC patients. PXN‐AS1‐L overexpression promotes NPC cell proliferation, migration, and invasion in vitro, and NPC tumor growth in vivo. PXN‐AS1‐L silencing suppresses NPC cell proliferation, migration, and invasion in vitro. Mechanistically, PXN‐AS1‐L directly interacts with SAPCD2 mRNA 3′‐untranslated region, prevents the binding of microRNAs‐AGO silencing complex to SAPCD2 mRNA, and upregulates the mRNA and protein level of SAPCD2. SAPCD2 is also increased in NPC tissues. The expression of SAPCD2 is significantly positively associated with that of PXN‐AS1‐L in NPC tissues. Gain‐of‐function and loss‐of‐function experiments demonstrated that SAPCD2 also promotes NPC cell proliferation, migration, and invasion. Furthermore, depletion of SAPCD2 significantly reverses the roles of PXN‐AS1‐L in promoting NPC cell proliferation, migration, and invasion in vitro, and NPC tumor growth in vivo. In conclusion, lncRNA PXN‐AS1‐L is upregulated in NPC and promoted NPC malignancy by upregulating SAPCD2 via direct RNA‐RNA interaction.
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Affiliation(s)
- Xiaodong Jia
- Department of Otolaryngology, Henan Province People's Hospital of Henan University, Zhengzhou, China
| | - Po Niu
- Department of Radiotherapy, Henan Province People's Hospital of Henan University, Zhengzhou, China
| | - Cuncun Xie
- Department of Otolaryngology, Henan Province People's Hospital of Henan University, Zhengzhou, China
| | - Hongjian Liu
- Department of Otolaryngology, Henan Province People's Hospital of Henan University, Zhengzhou, China
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