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Ahmadpour Youshanlui M, Yari A, Bahojb Mahdavi SZ, Amini M, Baradaran B, Ahangar R, Pourbagherian O, Mokhtarzadeh AA. BRD4 expression and its regulatory interaction with miR-26a-3p, DLG5-AS1, and JMJD1C-AS1 lncRNAs in gastric cancer progression. Discov Oncol 2024; 15:356. [PMID: 39152304 PMCID: PMC11329449 DOI: 10.1007/s12672-024-01230-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/02/2024] [Accepted: 08/12/2024] [Indexed: 08/19/2024] Open
Abstract
Gastric cancer remains a significant health challenge despite advancements in diagnosis and treatment. Early detection is critical to reducing mortality, necessitating the investigation of molecular mechanisms underlying gastric cancer progression. This study focuses on BRD4 expression and its correlation with miR-26a-3p, DLG5-AS1, and JMJD1C-AS1 lncRNAs in gastric cancer. Analysis of The Cancer Genome Atlas (TCGA) and Gene Expression Omnibus (GEO) datasets revealed significant upregulation of BRD4 in gastric cancer tissues compared to normal tissues, correlating negatively with miR-26a-3p and positively with DLG5-AS1 and JMJD1C-AS1 lncRNAs. Quantitative RT-PCR confirmed these findings in 25 gastric cancer tissue samples and 25 normal samples. BRD4's overexpression was associated with reduced survival rates and older patient age. MiR-26a-3p, a known tumor suppressor, showed decreased expression in gastric cancer tissues, with ROC analysis suggesting it, alongside BRD4, as a potential diagnostic biomarker. Additionally, bioinformatics predicted miR-26a-3p's interaction with BRD4 mRNA. Upregulated lncRNAs DLG5-AS1 and JMJD1C-AS1 likely act as competing endogenous RNAs, sponging miR-26a-3p, thus promoting BRD4 dysregulation. These lncRNAs have not been previously studied in gastric cancer. The findings propose a novel BRD4/lncRNA/miRNA regulatory axis in gastric cancer, highlighting the potential of BRD4, DLG5-AS1, and JMJD1C-AS1 as biomarkers for early diagnosis. Further studies with larger sample sizes and in vivo and in vitro experiments are needed to elucidate this regulatory mechanism's role in gastric cancer progression.
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Affiliation(s)
| | - Amirhossein Yari
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Mohammad Amini
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ramin Ahangar
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Omid Pourbagherian
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
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Zhu J, Wang L. The Role of lncRNA-miR-26a-mRNA Network in Cancer Progression and Treatment. Biochem Genet 2024; 62:1443-1461. [PMID: 37730965 DOI: 10.1007/s10528-023-10475-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 07/24/2023] [Indexed: 09/22/2023]
Abstract
The role of non-coding RNAs in regulating biological processes associated with cancer progression, such as proliferation, migration, and apoptosis, has been extensively studied. Long non-coding RNAs (lncRNAs) play a role in regulating these processes through various mechanisms, including transcriptional and post-transcriptional modifications. In post-transcriptional regulation, lncRNAs can bind to specific miRNAs and affect their function, which can either promote or inhibit cancer development. The interaction between lncRNAs, miRNAs, and mRNAs forms a network known as competitive endogenous RNA (ceRNA), which is involved in cancer progression or inhibition. One specific miRNA called miR-26a-5p has been identified as having tumor-suppressive properties. However, when lncRNAs bind to and inhibit miR-26a-5p, it can lead to cancer progression. Therefore, targeting this ceRNA network could be a promising strategy for preventing cancer development. This review will first discuss the anticancer effects of miR-26a-5p and then explore the involvement of the lncRNA-miR26a-5p-mRNA axis in cancer progression and potential targeted therapies.
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Affiliation(s)
- Jun Zhu
- Department of Oncology, Daye People's Hospital, Daye, Hubei, 435100, China.
| | - Liya Wang
- Department of Obstetrics and Gynecology, Pengren Hospital, Daye, Hubei, 435100, China
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lncRNA HCG11 Promotes Colorectal Cancer Cell Malignant Behaviors via Sponging miR-26b-5p. J Immunol Res 2023; 2023:9011232. [PMID: 36874625 PMCID: PMC9981294 DOI: 10.1155/2023/9011232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/27/2022] [Accepted: 01/20/2023] [Indexed: 02/25/2023] Open
Abstract
Colorectal cancer (CRC) is a type of gastrointestinal cancer with an increasing incidence. Long noncoding RNAs (lncRNAs) have raised great concern because of wide participation in human diseases, including cancers. However, whether lncRNA HLA complex group 11 (HCG11) played a functional role in CRC remained to be elucidated. Herein, we utilized qRT-PCR to analyze the expression of HCG11 and found that HCG11 was highly expressed in CRC cells. Besides, HCG11 knockdown suppressed cell proliferation, migration, and invasion but facilitated cell apoptosis. Furthermore, supported by bioinformatics analyses and mechanism assays, HCG11, mainly located in cell cytoplasm, was confirmed to competitively bind to miR-26b-5p to modulate the expression of the target messenger RNA (mRNA), namely, cAMP-regulated phosphoprotein 19 (ARPP19). ARPP19 was detected to be upregulated in CRC cells, and ARPP19 silence was verified to inhibit the malignant behaviors of CRC cells. Rescue experiments validated that miR-26b-5p inhibition or ARPP19 overexpression could countervail the inhibitory influences of HCG11 silence on CRC cell biological behaviors in vitro. To conclude, HCG11, upregulated in CRC cells, could promote cell proliferation, migration, and invasion and inhibit cell apoptosis via targeting miR-26b-5p/ARPP19 axis.
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Li M, Xiao Y, Liu M, Ning Q, Xiang Z, Zheng X, Tang S, Mo Z. MiR-26a-5p regulates proliferation, apoptosis, migration and invasion via inhibiting hydroxysteroid dehydrogenase like-2 in cervical cancer cell. BMC Cancer 2022; 22:876. [PMID: 35948893 PMCID: PMC9367141 DOI: 10.1186/s12885-022-09970-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 08/02/2022] [Indexed: 12/18/2022] Open
Abstract
Background Evidences have indicated that miR-26a-5p regulates the malignant properties of various tumor cells. However, the influences of miR-26a-5p on proliferation, apoptosis and invasion are still vague in the cervical cancer (CC) cells. Methods The miRNA microarray and real-time quantitative PCR (RT-qPCR) analysis were utilized to detect the expression of miR-26a-5p in the patients with CC. Kaplan–Meier plotter was performed to evaluate the overall survival (OS) of the patients with CC. The CCK-8, flow cytometry, transwell and wound healing analyses were respectively used to analyze proliferation, migration and invasion in the CC cells. RT-qPCR, western blot and IHC analysis were executed to measure the expression of hydroxysteroid dehydrogenase like-2 (HSDL2) in the patients with CC. Bioinformatics and luciferase reporter assay were carried out to verify the relationship of miR-26a-5p and HSDL2. Results The expression of miR-26a-5p was downregulated and low expression of miR-26a-5p indicated a poor OS in patients with CC. Overexpression of miR-26a-5p significantly inhibited proliferation, migration and invasion, accelerated apoptosis in the Hela and C33A cells. The expression of HSDL2 was upregulated, and negatively correlated with miR-26a-5p in the patients with CC. HSDL2 was directly targeted by miR-26a-5p and rescue experiments displayed that HSDL2 partially abolished proliferation, apoptosis, migration, and invasion induced by miR-26a-5p in CC cells. Conclusions MiR-26a-5p alleviated progression of CC by suppressing proliferation, migration and invasion, promoting apoptosis through downregulating HSDL2. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-022-09970-x.
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Affiliation(s)
- Ming Li
- Hunan Province Key Laboratory for Antibody-Based Drug and Intelligent Delivery System, Hunan University of Medicine, Huaihua, 418000, Hunan, China.,Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, China
| | - Yubo Xiao
- Hunan Province Key Laboratory for Antibody-Based Drug and Intelligent Delivery System, Hunan University of Medicine, Huaihua, 418000, Hunan, China
| | - Minqi Liu
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, China.,Guangxi Province Postgraduate Co-Training Base for Cooperative Innovation in Basic Medicine (Guilin Medical University and Yueyang Women & Children's Medical Center), Yueyang, 414000, China
| | - Qian Ning
- Hunan Province Key Laboratory for Antibody-Based Drug and Intelligent Delivery System, Hunan University of Medicine, Huaihua, 418000, Hunan, China
| | - Ziye Xiang
- School of Medical Laboratory Science, Changsha Medical University, Changsha, 410000, Hunan, China
| | - Xiang Zheng
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, China
| | - Shengsong Tang
- Hunan Province Key Laboratory for Antibody-Based Drug and Intelligent Delivery System, Hunan University of Medicine, Huaihua, 418000, Hunan, China. .,College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, 410128, Hunan, China.
| | - Zhongcheng Mo
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, Guilin Medical University, Guilin, 541001, Guangxi, China. .,Guangxi Province Postgraduate Co-Training Base for Cooperative Innovation in Basic Medicine (Guilin Medical University and Yueyang Women & Children's Medical Center), Yueyang, 414000, China.
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Chen X, Wu G, Qing J, Li C, Chen X, Shen J. LINC00240 knockdown inhibits nasopharyngeal carcinoma progress by targeting miR-26a-5p. J Clin Lab Anal 2022; 36:e24424. [PMID: 35421264 PMCID: PMC9102631 DOI: 10.1002/jcla.24424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/07/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022] Open
Abstract
Objective This study intended to explore the regulatory functions of LINC00240 on nasopharyngeal carcinoma (NPC). Methods MiR‐26a‐5p inhibitor, mimic, and siLINC00240 were transfected into NPC cells. QRT‐PCR was employed to assess miR‐26a‐5p and LINC00240 expressions. The targeting relationship of LINC00240 and miR‐26a‐5p was analyzed through dual luciferase reporter and RNA immunoprecipitation assay. Cell counting kit‐8 assay, colony formation assay, flow cytometry assay, wound healing assay, Transwell assay and in vitro angiogenesis assay were adopted for the evaluation of the effects of LINC00240 or miR‐26a‐5p and LINC00240 on NPC cells regarding cell proliferation, apoptosis and cycle, migration, invasion, and angiogenesis. EZH2, cell cycle, and epithelial‐mesenchymal transition (EMT)‐related protein expression was tested through Western blot. Results LINC00240 had a high expression in NPC tissues and cell lines. Silenced LINC00240 significantly suppressed the 5‐8F and HK1 cell proliferation, invasion, migration, and angiogenesis, but raised cell apoptosis, and cells were blocked in G0/G1 phase. MiR‐26a‐5p was a target of LINC00240. MiR‐26a‐5p upregulation suppressed the NPC cell proliferation, migration, invasion, angiogenesis, N‐cadherin and EZH2 expression, while it elevated apoptosis and p21, p27 and E‐cadherin expressions, whereas miR‐26a‐5p downregulation performed conversely. LINC00240 knockdown partially offset the effects of miR‐26a‐5p downregulation on cell proliferation, migration, invasion, angiogenesis, apoptosis, and EZH2. Conclusion LINC00240 knockdown restrained cell proliferation, invasion, migration, and angiogenesis, while it advanced apoptosis via miR‐26a‐5p in NPC by EZH2 inhibition.
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Affiliation(s)
- Xing Chen
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Guixiang Wu
- Department of Respiratory Medicine, Ningbo Ximen Wangchun Community Health Service Center, Ningbo City, China
| | - Jing Qing
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Chunlin Li
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Xudong Chen
- Department of Otorhinolaryngology, Ningbo First Hospital, Ningbo City, China
| | - Jian Shen
- Department of Anesthesiology, Jiangsu Province Hospital, Nanjing, China
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Cai B, Qu X, Kan D, Luo Y. miR-26a-5p suppresses nasopharyngeal carcinoma progression by inhibiting PTGS2 expression. Cell Cycle 2022; 21:618-629. [PMID: 35073820 PMCID: PMC8942422 DOI: 10.1080/15384101.2022.2030168] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Nasopharyngeal carcinoma (NPC) has a low five-year survival rate, and its pathogenesis remains unclear. There is an urgent need to improve our understanding of the genetic regulation of NPC tumorigenesis and development. The role of miR-26a-5p in NPC growth regulation and the expression of its target, PTGS2, was analyzed. Quantitative Real-time PCR assay was used to detect miR-26a-5p and PTGS2 expression in human NPC tissues and cell lines. The RNA pull-down dual-luciferase reporter assay was used to determine the association between miR-26a-5p and PTGS2. The effects of miR-26a-5p and PTGS2 on NPC cell viability, proliferation, migration, and invasion were measured by CCK-8, BrdU, and Transwell assays. miR-26a-5p expression in NPC tissues and cell lines was significantly decreased. The overexpression of miR-26a-5p inhibited the viability, proliferation, migration, and invasion of NPC cells. miR-26a-5p bound to the 3-'untranslated region of PTGS2, thus reducing PTGS2 protein levels. miR-26a-5p inhibited NPC development by reducing the expression of its target PTGS2.
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Affiliation(s)
- Binlin Cai
- Department of Otorhinolaryngology, Affiliated Puren Hospital of Wuhan University of Science and Technology, Wuhan, China
| | - Xiu Qu
- Department of Pain Treatment, Affiliated Puren Hospital of Wuhan University of Science and Technology, Wuhan, China
| | - Dan Kan
- Department of Otorhinolaryngology, Affiliated Puren Hospital of Wuhan University of Science and Technology, Wuhan, China
| | - Yi Luo
- Department of Otorhinolaryngology, Affiliated Puren Hospital of Wuhan University of Science and Technology, Wuhan, China,CONTACT Yi Luo Department of Otorhinolaryngology, Affiliated Puren Hospital of Wuhan University of Science and Technology, No. 1 Benxi Street, Qingshan District, Wuhan, Hubei430081, China
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