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Li C, Zhu Y, Shi S. Effective prognostic risk model with cuproptosis-related genes in laryngeal cancer. Braz J Otorhinolaryngol 2024; 90:101384. [PMID: 38228050 PMCID: PMC10823110 DOI: 10.1016/j.bjorl.2023.101384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/06/2023] [Accepted: 12/17/2023] [Indexed: 01/18/2024] Open
Abstract
OBJECTIVE Laryngeal cancer, characterized by high recurrence rates and a lack of effective biomarkers, has been associated with cuproptosis, a regulated cell death process linked to cancer progression. In this study, we aimed to explore the roles of cuproptosis-related genes in laryngeal cancer and their potential as prognostic markers and therapeutic targets. METHODS We collected comprehensive data from The Cancer Genome Atlas and Gene Expression Omnibus databases, including gene expression profiles and clinical data of laryngeal cancer patients. Using clustering and gene analysis, we identified cuproptosis-related genes with prognostic significance. A risk model was constructed based on these genes, categorizing patients into high- and low-risk groups for outcome comparison. Univariate and multivariate analyses were conducted to identify independent prognostic factors, which were then incorporated into a nomogram. Gene Set Enrichment Analysis was employed to explore pathways distinguishing high- and low-risk groups. RESULTS Our risk model, based on four genes, including transmembrane 2, dishevelled binding antagonist of β-catenin 1, stathmin 2, and G protein-coupled receptor 173, revealed significant differences in patient outcomes between high- and low-risk groups. Independent prognostic factors were identified and integrated into a nomogram, providing a valuable tool for prognostic prediction. Gene Set Enrichment Analysis uncovered up-regulated pathways specifically associated with high-risk patient samples. CONCLUSION This study highlights the potential of cuproptosis-related genes as valuable prognostic markers and promising therapeutic targets in the context of laryngeal cancer. This research sheds light on new avenues for understanding and managing this challenging disease. LEVEL OF EVIDENCE Level 4.
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Affiliation(s)
- Cong Li
- Shanghai Jiao Tong University School of Medicine, Tongren Hospital, Department of Otorhinolaryngology, Shanghai, China
| | - Yongzhi Zhu
- Zhengzhou Shuqing Medical College, Zhengzhou, China
| | - Song Shi
- Shanghai Jiao Tong University School of Medicine, Tongren Hospital, Department of Otorhinolaryngology, Shanghai, China.
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Yue J, Zhang J, Huan R, Zeng Y, Tan Y, Cheng Y. Dishevelled-associated antagonist of β-catenin homolog 3 (DACT3) suppresses glioma progression though Notch1 signaling pathway in β-catenin-dependent manner. Heliyon 2024; 10:e23511. [PMID: 38230242 PMCID: PMC10789601 DOI: 10.1016/j.heliyon.2023.e23511] [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: 09/19/2023] [Revised: 11/16/2023] [Accepted: 12/05/2023] [Indexed: 01/18/2024] Open
Abstract
The disheveled-associated antagonist of β-catenin homolog 3 (DACT3) has been recognized as a tumor suppressor in various cancers. However, the function of DACT3 on glioma malignant progression along with potential molecular mechanisms is poorly clarified. This research aimed to investigate how DACT3 contributes to suppressing the progression of glioma. In our investigation, a pronounced decrease in DACT3 expression was observed in glioma tissues. Through the overexpression of DACT3, we noted a significant suppression in the proliferation, invasion, and migration of glioma cells, while concurrently observing an increase in cell adhesion. Our exploration into the molecular mechanisms revealed that DACT3 executes its tumor-suppressive role by impeding the expression of notch 1 intracellular domain (NICD) and translocating into the nucleus by downregulating the expression of β-catenin. Consequently, this process leads to the suppression of Notch1 signaling. To summarize, our findings reveal the function of DACT3 to inhibit glioma progression via the Notch1 signaling pathway in β-catenin dependent manner. This study stands as the pioneer in examining the role of DACT3 in glioma progression and comprehensively elucidating its molecular mechanisms in glioma development. Therefore, our results suggest that DACT3 holds promise as both a prognostic factor and a potential biomarker for guiding treatment strategies in glioma patients (Graphical Abstract).
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Affiliation(s)
- Jianhe Yue
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Jiqin Zhang
- Department of Anesthesiology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Renzheng Huan
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yu Zeng
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Ying Tan
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Yuan Cheng
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
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Zeng Y, Zhang J, Yue J, Han G, Liu W, Liu L, Lin X, Zha Y, Liu J, Tan Y. The Role of DACT Family Members in Tumorigenesis and Tumor Progression. Int J Biol Sci 2022; 18:4532-4544. [PMID: 35864965 PMCID: PMC9295065 DOI: 10.7150/ijbs.70784] [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: 01/06/2022] [Accepted: 04/21/2022] [Indexed: 11/21/2022] Open
Abstract
Disheveled-associated antagonist of β-catenin (DACT), which ubiquitously expressed in human tissue, is critical for regulating cell proliferation and several developmental processes in different cellular contexts. In addition, DACT is essential for some other cellular processes, such as cell apoptosis, migration and differentiation. Given the importance of DACT in these cellular processes, many scientists are gradually interested in studying the role of DACT in tumorigenesis and cancer progression. This review article focuses on the latest research regarding the essential functions and potential DACT mechanisms in the occurrence and progression of tumors. Our study indicates that DACT may act as a tumor biomarker for cancer diagnosis and prognosis, as well as a promising therapeutic target in cancers.
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Affiliation(s)
- Yu Zeng
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Jiqin Zhang
- Department of Anesthesiology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Jianhe Yue
- Department of Neurosurgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Guoqiang Han
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Weijia Liu
- Department of Respiratory and Critical Care Medicine, Guizhou Provincial People's Hospital, Guiyang, China
| | - Lin Liu
- Department of Respiratory and Critical Care Medicine, Guizhou Provincial People's Hospital, Guiyang, China
| | - Xin Lin
- Department of Nephrology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Yan Zha
- Department of Nephrology, Guizhou Provincial People's Hospital, Guiyang, China
| | - Jian Liu
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
| | - Ying Tan
- Department of Neurosurgery, Guizhou Provincial People's Hospital, Guiyang, China
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Zhang Z, Yang P, Wang C, Tian R. LncRNA CRNDE hinders the progression of osteoarthritis by epigenetic regulation of DACT1. Cell Mol Life Sci 2022; 79:405. [PMID: 35802196 PMCID: PMC11072342 DOI: 10.1007/s00018-022-04427-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 11/25/2022]
Abstract
Osteoarthritis (OA) is mainly characterized by articular cartilage degeneration, synovial fibrosis, and inflammation. LncRNA CRNDE (colorectal neoplasia differentially expressed) has been reported to be down-regulated in age-related OA, but its role in injury-induced OA needs to be further explored. In this study, an OA rat model was established using anterior cruciate ligament transection, and the adenovirus-mediated CRNDE overexpression (Ad-CRNDE) or DACT1 (dapper antagonist of catenin-1) interference (sh-DACT1) vectors were administered by intraarticular injection. Moreover, chondrocyte‑like ATDC5 cells were treated with IL-1β (10 ng/mL) to simulate OA conditions in vitro. We found that overexpression of CRNDE alleviated cartilage damage and synovitis in OA rats, and suppressed IL-1β-induced apoptosis, inflammation, and extracellular matrix (ECM) degradation in chondrocyte‑like ATDC5 cells, while silencing DACT1 effectively antagonized the protective effect of CRNDE both in vivo and in vitro. Mechanism studies revealed that DACT1 could act as a downstream target of CRNDE. By recruiting p300, CRNDE promoted the enrichment of H3K27ac in the DACT1 promoter, thus promoting DACT1 transcription. In addition, CRNDE hindered the activation of the Wnt/β-catenin pathway in IL-1β-stimulated cells by inducing DACT1 expression. In conclusion, CRNDE promoted DACT1 expression through epigenetic modification and restrained the activation of Wnt/β-catenin signaling to impede the progression of OA.
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Affiliation(s)
- Ziqi Zhang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China.
- Department of Sports Injury, Xi'an Honghui Hospital, Xi'an, China.
| | - Pei Yang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Chunsheng Wang
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
| | - Run Tian
- Department of Bone and Joint Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, 157 Xiwu Road, Xi'an, 710004, China
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Paschidis K, Zougros A, Chatziandreou I, Tsikalakis S, Korkolopoulou P, Kavantzas N, Saetta AA. Methylation analysis of APC, AXIN2, DACT1, RASSF1A and MGMT gene promoters in Non-Small Cell Lung Cancer. Pathol Res Pract 2022; 234:153899. [DOI: 10.1016/j.prp.2022.153899] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 04/11/2022] [Accepted: 04/13/2022] [Indexed: 10/18/2022]
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Lv D, Ding S, Zhong L, Tu J, Li H, Yao H, Zou Y, Zeng Z, Liao Y, Wan X, Wen L, Xie X. M 6A demethylase FTO-mediated downregulation of DACT1 mRNA stability promotes Wnt signaling to facilitate osteosarcoma progression. Oncogene 2022; 41:1727-1741. [PMID: 35121825 DOI: 10.1038/s41388-022-02214-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 01/07/2022] [Accepted: 01/26/2022] [Indexed: 12/30/2022]
Abstract
Despite advances in clinical diagnosis and treatment, the prognosis of patients with osteosarcoma (OS) remains poor, and the treatment efficacy has plateaued. Therefore, it is important to identify new therapeutic targets for OS. N6-methyladenosine (m6A) modification has been reported to participate in tumor malignancy. In this study, functional screening showed that the m6A demethylase FTO could be a candidate therapeutic target for OS. Upregulated FTO in OS could predict a poorer prognosis. FTO promoted the growth and metastasis of OS in vitro and in vivo. Methylated RNA immunoprecipitation sequencing (MeRIP-seq) and RNA sequencing (RNA-seq) were performed to identify DACT1 as a potential target of FTO. In vitro assays demonstrated that FTO could reduce the mRNA stability of DACT1 via m6A demethylation, which decreased DACT1 expression and further activated the Wnt signaling pathway. The oncogenic effect of FTO on OS was dependent on DACT1. In addition, the m6A reader IGF2BP1 was validated to participate in the regulation of DACT1. Entacapone, a conventional drug for Parkinson's disease, was confirmed to suppress OS via m6A-mediated regulation through the FTO/DACT1 axis. Our findings demonstrate that FTO may be a novel therapeutic target and that entacapone has preclinical value to be repurposed for OS.
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Affiliation(s)
- Dongming Lv
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Shirong Ding
- Department of Radiation Oncology, Sun Yat-sen University Cancer Centre, Guangzhou, China
| | - Li Zhong
- State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.,Scientific Research Center, The Seventh Affiliated Hospital, Sun Yat-sen University, Shenzhen, China
| | - Jian Tu
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Hongbo Li
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Hao Yao
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Yutong Zou
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Ziliang Zeng
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Yan Liao
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China
| | - Xuesi Wan
- Department of Endocrinology and Diabetes Center, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China
| | - Lili Wen
- Department of Anesthesiology, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Sun Yat-sen University Cancer Center, Guangzhou, China.
| | - Xianbiao Xie
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, China. .,Guangdong Provincial Key Laboratory of Orthopedics and Traumatology, Guangzhou, China.
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Kurmann L, Okoniewski M, Dubey RK. Estradiol Inhibits Human Brain Vascular Pericyte Migration Activity: A Functional and Transcriptomic Analysis. Cells 2021; 10:cells10092314. [PMID: 34571963 PMCID: PMC8472363 DOI: 10.3390/cells10092314] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/24/2021] [Accepted: 09/01/2021] [Indexed: 12/24/2022] Open
Abstract
Stroke is the third leading cause of mortality in women and it kills twice as many women as breast cancer. A key role in the pathophysiology of stroke plays the disruption of the blood–brain barrier (BBB) within the neurovascular unit. While estrogen induces vascular protective actions, its influence on stroke remains unclear. Moreover, experiments assessing its impact on endothelial cells to induce barrier integrity are non-conclusive. Since pericytes play an active role in regulating BBB integrity and function, we hypothesize that estradiol may influence BBB by regulating their activity. In this study using human brain vascular pericytes (HBVPs) we investigated the impact of estradiol on key pericyte functions known to influence BBB integrity. HBVPs expressed estrogen receptors (ER-α, ER-β and GPER) and treatment with estradiol (10 nM) inhibited basal cell migration but not proliferation. Since pericyte migration is a hallmark for BBB disruption following injury, infection and inflammation, we investigated the effects of estradiol on TNFα-induced PC migration. Importantly, estradiol prevented TNFα-induced pericyte migration and this effect was mimicked by PPT (ER-α agonist) and DPN (ER-β agonist), but not by G1 (GPR30 agonist). The modulatory effects of estradiol were abrogated by MPP and PHTPP, selective ER-α and ER-β antagonists, respectively, confirming the role of ER-α and ER-β in mediating the anti-migratory actions of estrogen. To delineate the intracellular mechanisms mediating the inhibitory actions of estradiol on PC migration, we investigated the role of AKT and MAPK activation. While estradiol consistently reduced the TNFα-induced MAPK and Akt phosphorylation, only the inhibition of MAPK, but not Akt, significantly abrogated the migratory actions of TNFα. In transendothelial electrical resistance measurements, estradiol induced barrier function (TEER) in human brain microvascular endothelial cells co-cultured with pericytes, but not in HBMECs cultured alone. Importantly, transcriptomics analysis of genes modulated by estradiol in pericytes showed downregulation of genes known to increase cell migration and upregulation of genes known to inhibit cell migration. Taken together, our findings provide the first evidence that estradiol modulates pericyte activity and thereby improves endothelial integrity.
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Affiliation(s)
- Lisa Kurmann
- Department of Reproductive Endocrinology, University Hospital Zurich, 8952 Schlieren, Switzerland;
| | | | - Raghvendra K. Dubey
- Department of Reproductive Endocrinology, University Hospital Zurich, 8952 Schlieren, Switzerland;
- Department of Pharmacology & Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15219, USA
- Correspondence:
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Zhao Y, Zhou H, Dong W. LncRNA RHPN1-AS1 promotes the progression of nasopharyngeal carcinoma by targeting CELF2 expression. Exp Mol Pathol 2021; 122:104671. [PMID: 34358519 DOI: 10.1016/j.yexmp.2021.104671] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/23/2021] [Accepted: 08/01/2021] [Indexed: 11/16/2022]
Abstract
This study aims to investigate the role of lncRNA RHPN1-AS1 in NPC and its potential regulatory mechanism. The expression of RHPN1-AS1 in tissues and cells was measured by qRT-PCR. The effect of RHPN1-AS1 silencing on biological functions of NPC cells was detected by CCK-8, colony formation, flow cytometry, wound healing, and transwell assays. The protein expression was measured by western blot. The RBPs of RHPN1-AS1 were predicted by Starbase and LncTar, and verify by RIP assay. ESTIMATE was used to analyze the relationship between CELF2 expression and tumor purity. GSEA was used to analyze the downstream signaling pathway of CELF2. In our study, RHPN1-AS1 was up-regulated in NPC tissues and cells. RHPN1-AS1 silencing inhibited cell viability, capacity of proliferation, migration and invasion, promoted apoptosis, decreased protein expression of Bcl-2, MMP2/9, increased protein expression of Bax, caspase-3, and TIMP2 of NPC cells. CELF2 was a target of RHPN1-AS1 and was down-regulated in NPC tissues and cells. CELF2 level was associated with tumor purity negatively. Low expression of CELF2 activated mTORC1 signaling pathway and increased protein expression of p-mTORC1/mTORC1 and p-P70S6K/P70S6K. RHPN1-AS1 silencing eliminated the activating effect of CELF2 silencing on mTORC1 signaling pathway. Moreover, CELF2 silencing reversed the inhibitory effect of RHPN1-AS1 on NPC progression. In conclusion, our findings indicated that RHPN1-AS1 plays an important role in NPC via activating mTORC1 signaling which is modulated by CELF2. RHPN1-AS1 may serve as a potential therapeutic target for NPC treatment.
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Affiliation(s)
- Yanxiang Zhao
- Department of Otorhinolaryngology, Weifang Traditional Chinese Medicine Hospital, Weifang, Shandong 261041, PR China
| | - Haiyan Zhou
- Department of Infectious Diseases, Weifang people's Hospital, Weifang, Shandong 261041, PR China
| | - Wenhui Dong
- Department of Otorhinolaryngology, Weifang People's Hospital, Weifang, Shandong 261041, PR China.
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Histone Deacetylation Regulated by KDM1A to Suppress DACT1 in Proliferation and Migration of Cervical Cancer. ACTA ACUST UNITED AC 2021; 2021:5555452. [PMID: 34350095 PMCID: PMC8328692 DOI: 10.1155/2021/5555452] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/22/2021] [Accepted: 07/07/2021] [Indexed: 11/18/2022]
Abstract
Objective Increased expression of KDM1A and decreased expression of DACT1 in cervical cancer cells were noticed in a previous study. This study is aimed at exploring the mechanism behind the KDM1A regulation on DACT1 in cervical cancer cells. Methods The expression profile of KDM1A and DACT1 in cervical cancer tissues was searched in TCGA database. In vitro experiments verified the effect of KDM1A and DACT1 on proliferation and migration ability of cervical cancer cell lines after cell transfection. The interaction of KDM1A with HDAC1 was identified by coimmunoprecipitation (Co-IP). The expression levels of KDM1A and DACT1 in cervical cancer cell lines were determined by qRT-PCR and western blot. Results TCGA database showed that cervical cancer tissues had elevated expression of KDM1A and decreased expression of DACT1, which was consistent with the observation in cervical cancer cell lines. KDM1A was found to negatively regulate DACT1 through histone deacetylation. Meanwhile, the downregulation of KDM1A or overexpression of DACT1 could suppress the cell proliferation and migration ability in HeLa and SiHa cells. Cotransfection of KDM1A and DACT1 overexpression could reverse the increased cell proliferation and migration ability induced by KDM1A overexpression. Conclusion KDM1A can downregulate DACT1 expression through histone deacetylation and therefore suppress the proliferation and migration of cervical cancer cells.
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Wang S, Yang T, He Z. Investigations on the Role of the MicroRNA-338-5p/Wnt Family Member 2B (WNT2B) Axis in Regulating the Pathogenesis of Nasopharyngeal Carcinoma (NPC). Front Oncol 2021; 11:684462. [PMID: 34268117 PMCID: PMC8276634 DOI: 10.3389/fonc.2021.684462] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 06/03/2021] [Indexed: 11/13/2022] Open
Abstract
Background The involvement of microRNA-338-5p in modulating NPC pathogenesis is still largely unknown, and this study aimed to investigate this issue. Methods The expressions of cancer associated genes were determined by Real-Time qPCR and Western Blot, and cell apoptosis was determined by flow cytometer (FCM). CCK-8 assay and colony formation assay were respectively used to determine cell proliferation and colony formation abilities. Transwell assay was used to evaluate cell migration. The expression levels of Ki67 protein in mice tissues were measured by Immunohistochemistry (IHC) assay. Results The present study found that microRNA-338-5p suppressed NPC progression by degrading its downstream target, Wnt family member 2B (WNT2B). Specifically, microRNA-338-5p tended to be low-expressed in NPC tissues and cell lines, compared to the non-tumor nasopharyngeal mucosa tissues and normal nasopharyngeal cell line (NP69). Upregulation of microRNA-338-5p inhibited proliferation, mobility, and epithelial-mesenchymal transition (EMT) in NPC cells in vitro, while silencing of microRNA-338-5p had opposite effects. Consistently, microRNA-338-5p suppressed tumorigenesis of NPC cells in vivo. In addition, microRNA-338-5p targeted WNT2B for degradation and inhibition, and the inhibiting effects of microRNA-338-5p overexpression on NPC development were reversed by upregulating WNT2B. Conclusions Taken together, we concluded that microRNA-338-5p targeted WNT2B to hinder NPC development.
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Affiliation(s)
- Suzhen Wang
- Department of Otolaryngology, Wuwei People's Hospital, Wuwei, China
| | - Tianning Yang
- Department of Otolaryngology, The First Hospital of Lanzhou University, Lanzhou, China
| | - Zhengxiang He
- Department of Otolaryngology, Wuwei People's Hospital, Wuwei, China
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