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Li F, Song W, Wu L, Liu B, Du X. EIF4A3 induced circGRIK2 promotes the malignancy of glioma by regulating the miR-1303/HOXA10 axis. Am J Cancer Res 2023; 13:5868-5886. [PMID: 38187044 PMCID: PMC10767333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 11/13/2023] [Indexed: 01/09/2024] Open
Abstract
In recent years, the role of circular RNAs (circRNAs) in glioma has become increasingly important. However, there are still many newly discovered circRNAs with unknown functions that require further study. In this study, circRNA sequencing, qPCR, MTS, EdU, Transwell, and other assays were conducted to detect the expression and malignant effects of a novel circRNA molecule, circGRIK2, in glioma. qPCR, western blotting, RIP, and luciferase reporter gene experiments were used to investigate the downstream molecular mechanisms of circGRIK2. Our study found that circGRIK2 was highly expressed in glioma and promoted glioma cell viability, proliferation, invasion, and migration. Mechanistically, circGRIK2 acted as a competitive sponge for miR-1303, upregulating the expression of HOXA10 to exert its oncogenic effects. Additionally, the RNA-binding protein EIF4A3 could bind to and stabilize circGRIK2, leading to its high expression in glioblastoma. The discovery of circGRIK2 in this study not only contributes to a better understanding of the biological mechanisms of circGRIK2 in glioma but also provides a new target for molecular targeted therapy.
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Affiliation(s)
- Fubin Li
- Department of Neurosurgery, Zibo Central HospitalZibo 255036, Shandong, China
| | - Wei Song
- Department of Breast and Thyroid Surgery, Zibo Central HospitalZibo 255036, Shandong, China
| | - Lin Wu
- Department of Pediatrics, Zhangdian Maternal and Child Health Care HospitalZibo 255036, Shandong, China
| | - Bin Liu
- Department of Critical Care Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical UniversityJinan 250021, Shandong, China
| | - Xinrui Du
- Department of Neurosurgery, Zibo Central HospitalZibo 255036, Shandong, China
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Xiang G, Zhao Y, Jin D, Fang Y, Li Z, He X, Zhai Y, Teng J, Deng W. Down-Regulation of miRNA-1303 Promotes the Angiogenesis of HUVECs via Targeting THSD7A. Mol Biotechnol 2023:10.1007/s12033-023-00906-9. [PMID: 37847360 DOI: 10.1007/s12033-023-00906-9] [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: 07/04/2023] [Accepted: 09/12/2023] [Indexed: 10/18/2023]
Abstract
Angiogenesis promotes neurological recovery after acute ischemic stroke (AIS), and microRNAs play crucial roles in cerebral angiogenesis. This study found that Homo sapiens-microRNA-1303(miR-1303) was reduced in blood specimens of AIS patients and human umbilical vein endothelial cells after suffering from oxygen-glucose deprivation/reperfusion. The experiment detected the effect of miR-1303 on angiogenesis by wound healing assay, tube formation assay, and transwell assay. Down-regulation of miRNA-1303 promotes angiogenesis in vitro experiments, while miR-1303 over-expression reverses this effect. Based on bioinformatics analyses and dual-luciferase reporter assay, the thrombospondin type 1 domain containing 7A (THSD7A) was investigated and further validated as the downstream gene of miR-1303. Furthermore, the knockdown of miR-1303 decreased the protein translation and mRNA transcript levels of THSD7A. Our results reveal a novel miR-1303/THSD7A pathway for angiogenesis and further imply that miR-1303 can be a promising biomarker and therapeutic target for AIS.
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Affiliation(s)
- Guoliang Xiang
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Yanan Zhao
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Di Jin
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Yanbo Fang
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Zhiyi Li
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Xiaofeng He
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Yifei Zhai
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Junfang Teng
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Department of Neurology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
| | - Wenjing Deng
- Department of Neurology Intensive Care Unit, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
- Henan Province Neurological Disease Medical Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China.
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Lin Y, Dai H, Yu G, Song C, Liu J, Xu J. Inhibiting KCNMA1-AS1 promotes osteogenic differentiation of HBMSCs via miR-1303/cochlin axis. J Orthop Surg Res 2023; 18:73. [PMID: 36717952 PMCID: PMC9885668 DOI: 10.1186/s13018-023-03538-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 01/13/2023] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE Osteoporosis is a progressive systemic skeletal disorder. Multiple profiling studies have contributed to characterizing biomarkers and therapeutic targets for osteoporosis. However, due to the limitation of the platform of miRNA sequencing, only a part of miRNA can be sequenced based on one platform. MATERIALS AND METHODS In this study, we performed miRNA sequencing in osteoporosis bone samples based on a novel platform Illumina Hiseq 2500. Bioinformatics analysis was performed to construct osteoporosis-related competing endogenous RNA (ceRNA) networks. Gene interference and osteogenic induction were used to examine the effect of identified ceRNA networks on osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (HBMSCs). RESULTS miR-1303 was lowly expressed, while cochlin (COCH) and KCNMA1-AS1 were highly expressed in the osteoporosis subjects. COCH knockdown improved the osteogenic differentiation of HBMSCs. Meanwhile, COCH inhibition compensated for the suppression of osteogenic differentiation of HBMSCs by miR-1303 knockdown. Further, KCNMA1-AS1 knockdown promoted osteogenic differentiation of HBMSCs through downregulating COCH by sponging miR-1303. CONCLUSIONS Our findings suggest that the KCNMA1-AS1/miR-1303/COCH axis is a promising biomarker and therapeutic target for osteoporosis.
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Affiliation(s)
- Yuan Lin
- grid.415108.90000 0004 1757 9178Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China ,grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Hanhao Dai
- grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Guoyu Yu
- grid.415108.90000 0004 1757 9178Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China ,grid.265021.20000 0000 9792 1228Clinical College of Orthopedics, Tianjin Medical University, Tianjin, China
| | - Chao Song
- grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Jun Liu
- grid.265021.20000 0000 9792 1228Clinical College of Orthopedics, Tianjin Medical University, Tianjin, China ,grid.33763.320000 0004 1761 2484Department of Joints, Tianjin Hospital, Tianjin University, Tianjin, China
| | - Jie Xu
- grid.415108.90000 0004 1757 9178Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China ,grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
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Jurgec S, Jezernik G, Gorenjak M, Büdefeld T, Potočnik U. Meta-Analytic Comparison of Global RNA Transcriptomes of Acute and Chronic Myeloid Leukemia Cells Reveals Novel Gene Candidates Governing Myeloid Malignancies. Cancers (Basel) 2022; 14:cancers14194681. [PMID: 36230605 PMCID: PMC9562668 DOI: 10.3390/cancers14194681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Accepted: 09/22/2022] [Indexed: 11/16/2022] Open
Abstract
Simple Summary Despite advances in the understanding of genetic risk factors and molecular mechanisms underlying acute myeloid leukemia (AML) and chronic myeloid leukemia (CML), clinical outcomes of current therapies in terms of disease relapse and mortality rate pose a great economic and social burden. To overcome this, the identification of new molecular prognostic biomarkers and pharmacological targets is crucial. Recent studies have suggested that AML and CML may share common pathogenic mechanisms and cellular substrates. To this end, in the present study, global transcriptome profiles of AML and CML at the molecular and cellular level were directly compared using a combination of meta-analysis and modern statistics, and novel candidate genes and specific biological processes associated with the pathogenesis of AML and CML were characterized. Our study significantly improves our current understanding of myeloid leukemia and will help develop new therapeutic targets and biomarkers for disease progression, management and treatment response. Abstract Background: Acute myeloid leukemia (AML) and chronic myeloid leukemia (CML) represent a group of hematological malignancies characterized by the pathogenic clonal expansion of leukemic myeloid cells. The diagnosis and clinical outcome of AML and CML are complicated by genetic heterogeneity of disease; therefore, the identification of novel molecular biomarkers and pharmacological targets is of paramount importance. Methods: RNA-seq-based transcriptome data from a total of five studies were extracted from NCBI GEO repository and subjected to an in-depth bioinformatics analysis to identify differentially expressed genes (DEGs) between AML and CML. A systemic literature survey and functional gene ontology (GO) enrichment analysis were performed for the top 100 DEGs to identify novel candidate genes and biological processes associated with AML and CML. Results: LINC01554, PTMAP12, LOC644936, RPS27AP20 and FAM133CP were identified as novel risk genes for AML and CML. GO enrichment analysis showed that DEGs were significantly associated with pre-RNA splicing, reactive oxygen species and glycoprotein metabolism, the cellular endomembrane system, neutrophil migration and antimicrobial immune response. Conclusions: Our study revealed novel biomarkers and specific biological processes associated with AML and CML. Further studies are required to evaluate their value as molecular targets for managing and treating the myeloid malignancies.
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Affiliation(s)
- Staša Jurgec
- Center for Human Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
- Laboratory for Biochemistry, Molecular Biology and Genomics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia
| | - Gregor Jezernik
- Center for Human Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Mario Gorenjak
- Center for Human Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Tomaž Büdefeld
- Center for Human Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
| | - Uroš Potočnik
- Center for Human Genetics and Pharmacogenomics, Faculty of Medicine, University of Maribor, Taborska ulica 8, 2000 Maribor, Slovenia
- Laboratory for Biochemistry, Molecular Biology and Genomics, Faculty of Chemistry and Chemical Engineering, University of Maribor, Smetanova ulica 17, 2000 Maribor, Slovenia
- Department for Science and Research, University Medical Centre Maribor, Ljubljanska ulica 5, 2000 Maribor, Slovenia
- Correspondence: ; Tel.: +386-2-2345-854
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Pseudogenes and their potential functions in hematopoiesis. Exp Hematol 2021; 103:24-29. [PMID: 34517065 DOI: 10.1016/j.exphem.2021.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/01/2021] [Accepted: 09/05/2021] [Indexed: 11/24/2022]
Abstract
Pseudogenes are DNA regions comprising defective copies of functional genes, the majority of which were generated by RNA- or DNA-level duplications. They exist across almost all forms of life and account for about one-quarter of the annotated genes in the human genome. Although these have been considered nonfunctional for decades, a growing number of pseudogenes have been found to be transcribed and to play crucial regulatory roles. Accumulating evidence indicates that they regulate gene expression through molecular interactions at the protein, RNA, and DNA levels. However, pseudogenes are often excluded in multiple genomewide analyses and functional screening, and their biological activities remain to be systematically disclosed. Here, we summarize the features of and progress of research on pseudogenes, in addition to discussing what is unknown about these genetic elements. Our previous findings, together with evidence of their poor conservation, prompted us to propose that pseudogenes may contribute to primate- or human-specific regulation, especially in hematopoiesis.
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