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Zheng B, Geng Y, Li Y, Huang H, Liu A. Specificity protein 1/3 regulate T-cell acute lymphoblastic leukemia cell proliferation and apoptosis through β-catenin by acting as targets of miR-495-3p. Ann Hematol 2024; 103:2945-2960. [PMID: 38829410 DOI: 10.1007/s00277-024-05764-2] [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: 12/26/2023] [Accepted: 04/17/2024] [Indexed: 06/05/2024]
Abstract
T-cell acute lymphoblastic leukemia (T-ALL) is a hematologic heterogeneous disease. This study explored the mechanism of specificity protein 1/3 (Sp1/3) in T-ALL cells through β-catenin by acting as targets of miR-495-3p. Expression levels of miR-495-3p, Sp1, Sp3, and β-catenin in the serum from T-ALL children patients, healthy controls, and the T-ALL cell lines were measured. The cell proliferation ability and apoptosis rate were detected. Levels of proliferation-related proteins proliferating cell nuclear antigen (PCNA)/cyclinD1 and apoptosis-related proteins B-cell lymphoma-2 associated X protein (Bax)/B-cell lymphoma-2 (Bcl-2) were determined. The binding of Sp1/3 and β-catenin promoter and the targeted relationship between miR-495-3p with Sp1/3 were analyzed. Sp1/3 were upregulated in CD4+ T-cells in T-ALL and were linked with leukocyte count and risk classification. Sp1/3 interference prevented proliferation and promoted apoptosis in T-ALL cells. Sp1/3 transcription factors activated β-catenin expression. Sp1/3 enhanced T-ALL cell proliferation by facilitating β-catenin expression. miR-495-3p targeted and repressed Sp1/3 expressions. miR-495-3p overexpression inhibited T-ALL cell proliferation and promoted apoptosis. Conjointly, Sp1/3, as targets of miR-495-3p limit apoptosis and promote proliferation in T-ALL cells by promoting β-catenin expression.
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Affiliation(s)
- Boyang Zheng
- Hematology clinic, Harbin Medical University Cancer Hospital, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Yueqi Geng
- Hematology clinic, Harbin Medical University Cancer Hospital, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Yan Li
- Department of Hematology, Hainan Cancer Hospital, Haikou, China
| | - Huixiong Huang
- Hematology clinic, Harbin Medical University Cancer Hospital, No.150 Haping Road, Nangang District, Harbin, 150081, China
| | - Aichun Liu
- Hematology clinic, Harbin Medical University Cancer Hospital, No.150 Haping Road, Nangang District, Harbin, 150081, China.
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2
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Záveský L, Jandáková E, Weinberger V, Minář L, Kohoutová M, Slanař O. Long non-coding RNAs PTENP1, GNG12-AS1, MAGI2-AS3 and MEG3 as tumor suppressors in breast cancer and their associations with clinicopathological parameters. Cancer Biomark 2024; 40:61-78. [PMID: 38277283 PMCID: PMC11191509 DOI: 10.3233/cbm-230259] [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: 06/19/2023] [Accepted: 12/26/2023] [Indexed: 01/28/2024]
Abstract
BACKGROUND Breast cancer is the most commonly occurring cancer worldwide and is the main cause of death from cancer in women. Novel biomarkers are highly warranted for this disease. OBJECTIVE Evaluation of novel long non-coding RNAs biomarkers for breast cancer. METHODS The study comprised the analysis of the expression of 71 candidate lncRNAs via screening, six of which (four underexpressed, two overexpressed) were validated and analyzed by qPCR in tumor tissues associated with NST breast carcinomas, compared with the benign samples and with respect to their clinicopathological characteristics. RESULTS The results indicated the tumor suppressor roles of PTENP1, GNG12-AS1, MEG3 and MAGI2-AS3. Low levels of both PTENP1 and GNG12-AS1 were associated with worsened progression-free and overall survival rates. The reduced expression of GNG12-AS1 was linked to the advanced stage. A higher grade was associated with the lower expression of PTENP1, GNG12-AS1 and MAGI2-AS3. Reduced levels of both MEG3 and PTENP1 were linked to Ki-67 positivity. The NRSN2-AS1 and UCA1 lncRNAs were overexpressed; higher levels of UCA1 were associated with multifocality. CONCLUSIONS The results suggest that the investigated lncRNAs may play important roles in breast cancer and comprise a potential factor that should be further evaluated in clinical studies.
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Affiliation(s)
- Luděk Záveský
- First Faculty of Medicine, Institute of Biology and Medical Genetics, Charles University, Prague, Czech Republic
- General University Hospital, Prague, Czech Republic
- First Faculty of Medicine, Institute of Pharmacology, Charles University, Prague, Czech Republic
| | - Eva Jandáková
- Department of Pathology, Faculty of Medicine, Masaryk University, Brno, Czech Republic
- University Hospital Brno, Brno, Czech Republic
| | - Vít Weinberger
- University Hospital Brno, Brno, Czech Republic
- Department of Obstetrics and Gynecology, Masaryk University, Brno, Czech Republic
| | - Luboš Minář
- University Hospital Brno, Brno, Czech Republic
- Department of Obstetrics and Gynecology, Masaryk University, Brno, Czech Republic
| | - Milada Kohoutová
- First Faculty of Medicine, Institute of Biology and Medical Genetics, Charles University, Prague, Czech Republic
- General University Hospital, Prague, Czech Republic
| | - Ondřej Slanař
- General University Hospital, Prague, Czech Republic
- First Faculty of Medicine, Institute of Pharmacology, Charles University, Prague, Czech Republic
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Sun K, Lu T, Hu C, Li Z, Zhu J, Zhang L, Shao X, Chen W. LINC00115 regulates lung adenocarcinoma progression via sponging miR-154-3p to modulate Sp3 expression. Mol Cell Probes 2023; 68:101909. [PMID: 36889558 DOI: 10.1016/j.mcp.2023.101909] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 02/16/2023] [Accepted: 02/26/2023] [Indexed: 03/10/2023]
Abstract
The most commonly diagnosed and most lethal subtype of lung cancer is lung adenocarcinoma (LUAD). Therefore, more detailed understanding of the potential mechanism and identification of potential targets of lung adenocarcinoma is needed. A growing number of reports reveals that long non-coding RNAs (lncRNAs) play crucial roles in cancer progression. In present study, we found that lncRNA LINC00115 was upregulated in LUAD tissues and cells. Functional studies revealed that LINC00115 knockdown inhibits the proliferation, growth, invasion, and migration of LUAD cells. Mechanically, we indicated that miR-154-3p is target microRNA of LINC00115, and the effect of downregulated LINC00115 on LUAD cells was partially reversed by the miR-154-3p antisense oligonucleotide (ASO-miR-154-3p). Further investigation revealed that Specificity protein 3 (Sp3) directly interacted with miR-154-3p, and the Sp3 level was positively correlated with the LINC00115 expression. Rescue experiments further showed that Sp3 overexpression partially restored the effect of downregulated LINC00115 on LUAD cells. Similarly, in vivo experiments confirmed that downregulated LINC00115 inhibited xenograft growth and Sp3 expression. Our results demonstrated that LINC00115 knockdown inhibited LUAD progression via sponging miR-154-3p to modulate Sp3 expression. These data indicate that the LINC00115/miR-154-3p/Sp3 axis can be a potential therapeutic target of LUAD.
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Affiliation(s)
- Kexin Sun
- School of Medicine, Xi'an Jiaotong University, Xi'an City, Shaanxi, China; College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Tingting Lu
- College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Cheng Hu
- College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Zhengyi Li
- College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Jie Zhu
- College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Li Zhang
- College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Xiaotong Shao
- College of Laboratory Medicine, Jilin Medical University, Jilin City, Jilin, China
| | - Wei Chen
- School of Medicine, Xi'an Jiaotong University, Xi'an City, Shaanxi, China; Department of Clinical Laboratory, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an City, Shaanxi, China.
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4
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Safe S. Specificity Proteins (Sp) and Cancer. Int J Mol Sci 2023; 24:5164. [PMID: 36982239 PMCID: PMC10048989 DOI: 10.3390/ijms24065164] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/01/2023] [Accepted: 03/03/2023] [Indexed: 03/10/2023] Open
Abstract
The specificity protein (Sp) transcription factors (TFs) Sp1, Sp2, Sp3 and Sp4 exhibit structural and functional similarities in cancer cells and extensive studies of Sp1 show that it is a negative prognostic factor for patients with multiple tumor types. In this review, the role of Sp1, Sp3 and Sp4 in the development of cancer and their regulation of pro-oncogenic factors and pathways is reviewed. In addition, interactions with non-coding RNAs and the development of agents that target Sp transcription factors are also discussed. Studies on normal cell transformation into cancer cell lines show that this transformation process is accompanied by increased levels of Sp1 in most cell models, and in the transformation of muscle cells into rhabdomyosarcoma, both Sp1 and Sp3, but not Sp4, are increased. The pro-oncogenic functions of Sp1, Sp3 and Sp4 in cancer cell lines were studied in knockdown studies where silencing of each individual Sp TF decreased cancer growth, invasion and induced apoptosis. Silencing of an individual Sp TF was not compensated for by the other two and it was concluded that Sp1, Sp3 and Sp4 are examples of non-oncogene addicted genes. This conclusion was strengthened by the results of Sp TF interactions with non-coding microRNAs and long non-coding RNAs where Sp1 contributed to pro-oncogenic functions of Sp/non-coding RNAs. There are now many examples of anticancer agents and pharmaceuticals that induce downregulation/degradation of Sp1, Sp3 and Sp4, yet clinical applications of drugs specifically targeting Sp TFs are not being used. The application of agents targeting Sp TFs in combination therapies should be considered for their potential to enhance treatment efficacy and decrease toxic side effects.
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Affiliation(s)
- Stephen Safe
- Department of Veterinary Physiology and Pharmacology, Texas A&M University, College Station, TX 77843, USA
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Ranjbar M, Heydarzadeh S, Shekari Khaniani M, Foruzandeh Z, Seif F, Pornour M, Rahmanpour D, Tarhriz V, Alivand M. Mutual interaction of lncRNAs and epigenetics: focusing on cancer. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2023. [DOI: 10.1186/s43042-023-00404-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023] Open
Abstract
AbstractLong noncoding RNAs are characterized as noncoding transcripts longer than 200 nucleotides in response to a variety of functions within the cells. They are involved in almost all cellular mechanisms so as epigenetics. Given that epigenetics is an important phenomenon, which participates in the biology of complex diseases, many valuable studies have been performed to demonstrate the control status of lncRNAs and epigenetics. DNA methylation and histone modifications as epigenetic mechanisms can regulate the expression of lncRNAs by affecting their coding genes. Reciprocally, the three-dimensional structure of lncRNAs could mechanistically control the activity of epigenetic-related enzymes. Dysregulation in the mutual interaction between epigenetics and lncRNAs is one of the hallmarks of cancer. These mechanisms are either directly or indirectly involved in various cancer properties such as proliferation, apoptosis, invasion, and metastasis. For instance, lncRNA HOTAIR plays a role in regulating the expression of many genes by interacting with epigenetic factors such as DNA methyltransferases and EZH2, and thus plays a role in the initiation and progression of various cancers. Conversely, the expression of this lncRNA is also controlled by epigenetic factors. Therefore, focusing on this reciprocated interaction can apply to cancer management and the identification of prognostic, diagnostic, and druggable targets. In the current review, we discuss the reciprocal relationship between lncRNAs and epigenetic mechanisms to promote or prevent cancer progression and find new potent biomarkers and targets for cancer diagnosis and therapy.
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Zhu Y, Zhang F, Zhang S, Yi M. Predicting latent lncRNA and cancer metastatic event associations via variational graph auto-encoder. Methods 2023; 211:1-9. [PMID: 36709790 DOI: 10.1016/j.ymeth.2023.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/05/2022] [Accepted: 01/20/2023] [Indexed: 01/27/2023] Open
Abstract
Long non-coding RNA (lncRNA) are shown to be closely associated with cancer metastatic events (CME, e.g., cancer cell invasion, intravasation, extravasation, proliferation) that collaboratively accelerate malignant cancer spread and cause high mortality rate in patients. Clinical trials may accurately uncover the relationships between lncRNAs and CMEs; however, it is time-consuming and expensive. With the accumulation of data, there is an urgent need to find efficient ways to identify these relationships. Herein, a graph embedding representation-based predictor (VGEA-LCME) for exploring latent lncRNA-CME associations is introduced. In VGEA-LCME, a heterogeneous combined network is constructed by integrating similarity and linkage matrix that can maintain internal and external characteristics of networks, and a variational graph auto-encoder serves as a feature generator to represent arbitrary lncRNA and CME pair. The final robustness predicted result is obtained by ensemble classifier strategy via cross-validation. Experimental comparisons and literature verification show better remarkable performance of VGEA-LCME, although the similarities between CMEs are challenging to calculate. In addition, VGEA-LCME can further identify organ-specific CMEs. To the best of our knowledge, this is the first computational attempt to discover the potential relationships between lncRNAs and CMEs. It may provide support and new insight for guiding experimental research of metastatic cancers. The source code and data are available at https://github.com/zhuyuan-cug/VGAE-LCME.
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Affiliation(s)
- Yuan Zhu
- School of Automation, China University of Geosciences, 388 Lumo Road, Hongshan District, 430074, Wuhan, Hubei, China; Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems, 388 Lumo Road, Hongshan District, 430074, Wuhan, Hubei, China; Engineering Research Center of Intelligent Technology for Geo-Exploration, 388 Lumo Road, Hongshan District, 430074, Wuhan, Hubei, China
| | - Feng Zhang
- School of Mathematics and Physics, China University of Geosciences, 388 Lumo Road, Hongshan District, 430074, Wuhan, Hubei, China
| | - Shihua Zhang
- College of Life Science and Health, Wuhan University of Science and Technology, 974 Heping Avenue, Qingshan District, 430081, Wuhan, Hubei, China.
| | - Ming Yi
- School of Mathematics and Physics, China University of Geosciences, 388 Lumo Road, Hongshan District, 430074, Wuhan, Hubei, China.
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Xu J, Wang X, Zhu C, Wang K. A review of current evidence about lncRNA MEG3: A tumor suppressor in multiple cancers. Front Cell Dev Biol 2022; 10:997633. [PMID: 36544907 PMCID: PMC9760833 DOI: 10.3389/fcell.2022.997633] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 11/22/2022] [Indexed: 12/12/2022] Open
Abstract
Long non-coding RNA (lncRNA) maternally expressed gene 3 (MEG3) is a lncRNA located at the DLK1-MEG3 site of human chromosome 14q32.3. The expression of MEG3 in various tumors is substantially lower than that in normal adjacent tissues, and deletion of MEG3 expression is involved in the occurrence of many tumors. The high expression of MEG3 could inhibit the occurrence and development of tumors through several mechanisms, which has become a research hotspot in recent years. As a member of tumor suppressor lncRNAs, MEG3 is expected to be a new target for tumor diagnosis and treatment. This review discusses the molecular mechanisms of MEG3 in different tumors and future challenges for the diagnosis and treatment of cancers through MEG3.
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Affiliation(s)
- Jie Xu
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Xia Wang
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Chunming Zhu
- Department of Family Medicine, Shengjing Hospital of China Medical University, Shenyang, China,*Correspondence: Chunming Zhu, ; Kefeng Wang,
| | - Kefeng Wang
- Department of Urology, Shengjing Hospital of China Medical University, Shenyang, China,*Correspondence: Chunming Zhu, ; Kefeng Wang,
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Lv F, Qin J, Kong S, Pan L, Ding R. MicroRNA-506 ameliorates breast cancer-induced osteolytic bone metastasis via the NFATc-1 signaling pathway. J Biochem Mol Toxicol 2022; 36:e23156. [PMID: 36156333 DOI: 10.1002/jbt.23156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 05/02/2022] [Accepted: 07/01/2022] [Indexed: 11/08/2022]
Abstract
Breast cancer is becoming a common life-threatening disease, especially in women, along with higher incidence and mortality. MicroRNA (miR)-506 was reported to participate in breast cancer progression, while the role of miR-506 in breast cancer-induced osteolytic bone metastasis is unclear. In the present study, we found significant downregulation of miR-506 in breast cancer tissues and cell lines. Overexpression of miR-506 notably reduced the proliferative, migratory and invasive rates of MCF7 and MDA-MB-231 cells, and reduced the production of inflammatory factors IL-6 and TNF-α in MCF7 cells. Moreover, overexpression of miR-506 obviously inhibited tumor growth in an in vivo animal model. In addition, overexpression of miR-560 efficiently attenuated breast cancer-induced osteolysis in vivo, which was characterized by increased bone volume/total volume (BT/TV), trabecular number (Tb. N), and trabecular thickness (Tb. Th), as well as the reduced trabecular separation (Tb. Sp). The nuclear factor of activated T cell cytoplasmic 1 (NFATc1) was identified as a downstream target of miR-506, and overexpression of miR-506 could inhibit breast cancer progression by targeting NFATc1. Furthermore, our results showed that NFATc-1 might participate in the inhibition of miR-506 on breast cancer-induced osteolysis. In conclusion, our findings provide insights into understanding the pathogenesis of breast cancer and breast cancer-induced osteolytic bone metastasis, and miR-506 might serve as a novel biomarker for this disease.
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Affiliation(s)
- Feng Lv
- Department of Breast Surgery, Henan Provincial People's Hospital (Henan University People's Hospital), Zhengzhou City, Henan Province, China
| | - Jingbo Qin
- Department of Breast Surgery, Henan Provincial People's Hospital (Henan University People's Hospital), Zhengzhou City, Henan Province, China
| | - Shuxin Kong
- Department of Breast Surgery, Henan Provincial People's Hospital (Henan University People's Hospital), Zhengzhou City, Henan Province, China
| | - Limin Pan
- Department of Breast Surgery, Henan Provincial People's Hospital (Henan University People's Hospital), Zhengzhou City, Henan Province, China
| | - Ran Ding
- Orthopedic Surgery of Wuhan General Hospital of People's Liberation Army, Wuhan City, Hubei Province, China
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Zhu X, Lv L, Wang M, Fan C, Lu X, Jin M, Li S, Wang F. DNMT1 facilitates growth of breast cancer by inducing MEG3 hyper-methylation. Cancer Cell Int 2022; 22:56. [PMID: 35109842 PMCID: PMC8812010 DOI: 10.1186/s12935-022-02463-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 01/11/2022] [Indexed: 11/25/2022] Open
Abstract
Background To understand the effect of DNMT1-mediated MEG3 promoter methylation on breast cancer progression. Methods Expression of DNMT1, MEG3 and miR-494-3p was assayed by qRT-PCR and western blot. Methylation-specific PCR was used to examine MEG3 promoter methylation level. ChIP, RNA binding protein immunoprecipitation assay and dual-luciferase reporter gene assay were applied to verify interaction between DNMT1 and MEG3, miR-494-3p and MEG3 and OTUD4. CCK-8, wound healing and Transwell assays were used to detect biological functions of breast cancer cells. Tumor growth was observed by tumor xenograft model. Results DNMT1 and miR-494-3p were highly expressed while MEG3 and OTUD4 were lowly expressed in breast cancer cells. Knockdown of DNMT1 inhibited progression of breast cancer cells by enhance MEG3 expression through demethylation. MEG3 could downregulate miR-494-3p expression, and OTUD4 was a target of miR-494-3p. Upregulation of MEG3 and downregulation of miR-494-3p both inhibited malignant behavior of cells in vitro. In addition, high MEG3 expression restrained growth of breast cancer in vivo. Conclusion Briefly, our results demonstrated that, DNMT1 induced methylation of MEG3 promoter, and played a key role in breast cancer growth throughmiR-494-3p/OTUD4 axis. These findings provide new insights into molecular therapeutic targets for breast cancer. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-022-02463-8.
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Affiliation(s)
- Xiaotao Zhu
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Lin Lv
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Mingzheng Wang
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Chen Fan
- Department of Breast Surgery, Women and Children Branch of Jinhua Municipal Central Hospital, Jinhua, 321000, China
| | - Xiaofeng Lu
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Miaomiao Jin
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Shuguang Li
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China
| | - Fan Wang
- Department of Thyroid Breast Surgery, Jinhua Municipal Central Hospital, No. 365 East Renmin Road, Jinhua, 321000, Zhejiang, China.
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Zhang Y, Lu C, Cui H. Long non-coding RNA SNHG22 facilitates hepatocellular carcinoma tumorigenesis and angiogenesis via DNA methylation of microRNA miR-16-5p. Bioengineered 2021; 12:7446-7458. [PMID: 34652260 PMCID: PMC8806779 DOI: 10.1080/21655979.2021.1975969] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Hepatocellular carcinoma (HCC) is considered as a common malignancy worldwide. Considerable evidence has illustrated that abnormally expressed long noncoding RNAs (lncRNAs) are in a close correlation with the initiation and progression of various tumors, including HCC. LncRNA small nucleolar RNA host gene 22 (SNHG22) has been reported to play important roles in tumor initiation, but its role and mechanism are little known in HCC. In our report, we discovered the high level of SNHG22 in HCC tissues and cells, and the high expression of SNHG22 was correlated with unfavorable clinical outcome in HCC patients. Functional assays implied that SNHG22 deficiency suppressed cell proliferation, migration, invasion, and angiogenesis in vitro. Additionally, it was also confirmed that silenced SNHG22 suppressed tumor growth and angiogenesis in vivo. Mechanistic exploration revealed that SNHG22 recruited DNMT1 to miR-16-5p DNA promoter through EZH2 and inhibited miR-16-5p transcription via DNA methylation. Finally, we verified that the suppression of miR-16-5p countervailed the suppressive effect of SNHG22 deficiency on HCC cell proliferation, migration, invasion, and angiogenesis. Conclusively, this study clarified the SNHG22/EZH2/DNMT1/miR-16-5p axis and revealed that SNHG22 could be an underlying biomarker for HCC.
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Affiliation(s)
- Yinxin Zhang
- Department of General Surgery, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Jianhu, Jiangsu Province China
| | - Changliang Lu
- Department of General Surgery, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Jianhu, Jiangsu Province China
| | - Haiwei Cui
- Department of Operating Room, The Affiliated Jianhu Hospital of Nantong University, Jianhu People's Hospital, Jianhu, Jiangsu Province, China
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Liu XL, Liu WJ, Chen Q, Liu J, Yang CQ, Zhang G, Zhang SL, Guo WH, Li JB, Zhao G, Yin DC, Zhang CY. miR-506-loaded gelatin nanospheres target PENK and inactivate the ERK/Fos signaling pathway to suppress triple-negative breast cancer aggressiveness. Mol Carcinog 2021; 60:538-555. [PMID: 34062009 DOI: 10.1002/mc.23310] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 05/07/2021] [Accepted: 05/09/2021] [Indexed: 12/13/2022]
Abstract
Triple-negative breast cancer (TNBC) is the most malignant subtype of breast cancer. Some microRNAs (miRNAs) were abnormally expressed in TNBC, and they are closely related to the occurrence and progression of TNBC. Here, we found that miR-506 was significantly downregulated in TNBC and relatively lower miR-506 expression predicted a poorer prognosis. Moreover, we found that miR-506 could inhibit MDA-MB-231 cell viability, colony formation, migration, and invasion, and suppress the ERK/Fos oncogenic signaling pathway through upregulating its direct target protein proenkephalin (PENK). Therefore, miR-506 was proposed as a nucleic acid drug for TNBC therapy. However, miRNA is unstable in vivo, which limiting its application as a therapeutic drug via conventional oral or injected therapies. Here, a gelatin nanosphere (GN) delivery system was applied for the first time to load exogenous miRNA. Exogenous miR-506 mimic was loaded on GNs and injected into the in situ TNBC animal model, and the miR-506 could achieve sustained and controlled release. The results confirmed that overexpression of miR-506 and PENK in vivo through loading on GNs inhibited in situ triple-negative breast tumor growth and metastasis significantly in the xenograft model. Moreover, we indicated that the ERK/Fos signaling pathway was intensively inactivated after overexpression of miR-506 and PENK both in vitro and in vivo, which was further validated by the ERK1/2-specific inhibitor SCH772984. In conclusion, this study demonstrates that miR-506-loaded GNs have great potential in anti-TNBC aggressiveness therapy.
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Affiliation(s)
- Xin-Li Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wen-Jing Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Qiang Chen
- State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, China
| | - Jie Liu
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chang-Qing Yang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Ge Zhang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Shi-Long Zhang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wei-Hong Guo
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Jing-Bao Li
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Gang Zhao
- Breast Surgery, The First Hospital of Jilin University, Changchun, China
| | - Da-Chuan Yin
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chen-Yan Zhang
- Institute for Special Environmental Biophysics, Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
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Yoshida K, Yokoi A, Yamamoto Y, Kajiyama H. ChrXq27.3 miRNA cluster functions in cancer development. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2021; 40:112. [PMID: 33766100 PMCID: PMC7992321 DOI: 10.1186/s13046-021-01910-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 03/14/2021] [Indexed: 12/11/2022]
Abstract
MicroRNAs (miRNAs) regulate the expression of their target genes post-transcriptionally; thus, they are deeply involved in fundamental biological processes. miRNA clusters contain two or more miRNA-encoding genes, and these miRNAs are usually coexpressed due to common expression mechanisms. Therefore, miRNA clusters are effective modulators of biological pathways by the members coordinately regulating their multiple target genes, and an miRNA cluster located on the X chromosome q27.3 region has received much attention in cancer research recently. In this review, we discuss the novel findings of the chrXq27.3 miRNA cluster in various types of cancer. The chrXq27.3 miRNA cluster contains 30 mature miRNAs synthesized from 22 miRNA-encoding genes in an ~ 1.3-Mb region. The expressions of these miRNAs are usually negligible in many normal tissues, with the male reproductive system being an exception. In cancer tissues, each miRNA is dysregulated, compared with in adjacent normal tissues. The miRNA-encoding genes are not uniformly distributed in the region, and they are further divided into two groups (the miR-506-514 and miR-888-892 groups) according to their location on the genome. Most of the miRNAs in the former group are tumor-suppressive miRNAs that are further downregulated in various cancers compared with normal tissues. miR-506-3p in particular is the most well-known miRNA in this cluster, and it has various tumor-suppressive functions associated with the epithelial–mesenchymal transition, proliferation, and drug resistance. Moreover, other miRNAs, such as miR-508-3p and miR-509-3p, have similar tumor-suppressive effects. Hence, the expression of these miRNAs is clinically favorable as prognostic factors in various cancers. However, the functions of the latter group are less understood. In the latter group, miR-888-5p displays oncogenic functions, whereas miR-892b is tumor suppressive. Therefore, the functions of the miR-888–892 group are considered to be cell type- or tissue-specific. In conclusion, the chrXq27.3 miRNA cluster is a critical regulator of cancer progression, and the miRNAs themselves, their regulatory mechanisms, and their target genes might be promising therapeutic targets.
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Affiliation(s)
- Kosuke Yoshida
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Tsuruma-cho 65, Showa-ku, Nagoya, 466-8550, Japan.,Institute for Advanced Research, Nagoya University, Nagoya, Japan.,Division of Cellular Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Akira Yokoi
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Tsuruma-cho 65, Showa-ku, Nagoya, 466-8550, Japan. .,Institute for Advanced Research, Nagoya University, Nagoya, Japan.
| | - Yusuke Yamamoto
- Division of Cellular Signaling, National Cancer Center Research Institute, Tokyo, Japan
| | - Hiroaki Kajiyama
- Department of Obstetrics and Gynecology, Nagoya University Graduate School of Medicine, Tsuruma-cho 65, Showa-ku, Nagoya, 466-8550, Japan
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13
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Jones R, Wijesinghe S, Wilson C, Halsall J, Liloglou T, Kanhere A. A long intergenic non-coding RNA regulates nuclear localization of DNA methyl transferase-1. iScience 2021; 24:102273. [PMID: 33851096 PMCID: PMC8022221 DOI: 10.1016/j.isci.2021.102273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 12/21/2020] [Accepted: 03/02/2021] [Indexed: 01/10/2023] Open
Abstract
DNA methyl transferase-1 or DNMT1 maintains DNA methylation in the genome and is important for regulating gene expression in cells. Aberrant changes in DNMT1 activity and DNA methylation are commonly observed in cancers and many other diseases. Recently, a number of long intergenic non-protein-coding RNAs or lincRNAs have been shown to play a role in regulating DNMT1 activity. CCDC26 is a nuclear lincRNA that is frequently mutated in cancers and is a hotbed for disease-associated single nucleotide changes. However, the functional mechanism of CCDC26 is not understood. Here, we show that this lincRNA is concentrated on the nuclear periphery. Strikingly, in the absence of CCDC26 lincRNA, DNMT1 is mis-located in the cytoplasm, and the genomic DNA is significantly hypomethylated. This is accompanied by double-stranded DNA breaks and increased cell death. These results point to a previously unrecognized mechanism of lincRNA-mediated subcellular localization of DNMT1 and regulation of DNA methylation.
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Affiliation(s)
- Rhian Jones
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Susanne Wijesinghe
- Institute of Inflammation and Ageing, University of Birmingham, Edgbaston, Birmingham, UK
| | - Claire Wilson
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - John Halsall
- Institute of Genomic Sciences, University of Birmingham, Edgbaston, Birmingham, UK
| | - Triantafillos Liloglou
- Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Aditi Kanhere
- School of Biosciences, University of Birmingham, Edgbaston, Birmingham, UK.,Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
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14
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Sun Y, Wang R. A Risk Score System Based on the Methylation Levels of 15 RNAs in Breast Cancer. Cancer Biother Radiopharm 2021; 37:697-707. [PMID: 33571027 DOI: 10.1089/cbr.2020.4074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Breast cancer (BC) occurs in the epithelial tissues of the breast gland, which is the most common cancer in women. This study is implemented to construct a risk score system for BC. Methods: The methylation data of BC from The Cancer Genome Atlas database (the training set) and GSE37754 from Gene Expression Omnibus database (the validation set) were downloaded. The differentially methylated RNAs (DMRs) between BC and normal samples were screened by limma package, and the correlations between the expression levels and methylation levels of the DMRs were analyzed to calculate their Pearson correlation coefficients (PCCs) using the cor.test function. To build the risk score system, the optimal RNAs were identified by penalized package. Subsequently, the nomogram survival model was established using the rms package. The lncRNA-mRNA comethylation network was constructed by Cytoscape software, and then enrichment analysis was performed using DAVID tool. Results: From the 1170 DMRs between BC and normal samples, 800 DMRs with significant negative PCCs were screened. For building the risk score system, the 15 optimal RNAs were selected. Afterward, the nomogram survival model based on four independent clinical prognostic factors (including age, radiation therapy, tumor recurrence, and RS model status) was constructed. In the comethylation network, the long noncoding RNA (lncRNA) PRNT was comethylated with FAM19A5 and RBM24. For the mRNAs in the comethylation network, angiogenesis and pathways in cancer were enriched. Conclusion: The risk score system and the nomogram survival model might be of great importance for the prognosis prediction of BC patients.
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Affiliation(s)
- Ying Sun
- Department of Radiology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
| | - Rengui Wang
- Department of Radiology, Beijing Shijitan Hospital, Capital Medical University, Beijing, China
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15
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Li H, Xu X, Wang D, Zhang Y, Chen J, Li B, Su S, Wei L, You H, Fang Y, Wang Y, Liu Y. Hypermethylation-mediated downregulation of long non-coding RNA MEG3 inhibits osteogenic differentiation of bone marrow mesenchymal stem cells and promotes pediatric aplastic anemia. Int Immunopharmacol 2021; 93:107292. [PMID: 33529912 DOI: 10.1016/j.intimp.2020.107292] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 12/02/2020] [Accepted: 12/08/2020] [Indexed: 12/13/2022]
Abstract
BACKGROUND The reduced osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) is the typical characteristics of pediatric aplastic anemia (AA) pathogenesis. Long non-coding RNA MEG3 is reported to promote osteogenic differentiation of BMSCs via inducing BMP4 expression. OBJECTIVE This study aims to investigate the mechanism of DNMT1/MEG3/BMP4 pathway in osteogenic differentiation of BMSCs in pediatric AA. METHODS BMSCs were isolated and purified from bone marrows of pediatric AA patients (n = 5) and non-AA patients (n = 5). The expression of DNMT1, MEG3, and BMP4 in isolated BMSCs was detected using quantitative real-time PCR and western blot analysis. Osteogenic differentiation was determined using Alizarin red staining. The methylation of MEG3 promoter and the interaction between DNMT1 and MEG3 promoter were detected using methylation-specific PCR and chromatin immunoprecipitation assay, respectively. RESULTS Lowly expressed MEG3 and BMP4 and highly expressed DNMT1 were observed in BMSCs of pediatric AA patients. The overexpression of MEG3 promoted osteogenic differentiation of BMSCs. Luciferase reporter assay showed that MEG3 overexpression increased transcriptional activity of BMP4. The inhibitor of methylation, 5-azacytidine, suppressed DNMT1 expression and reduced methylation of MEG3 promoter. Overexpression of DNMT1 increased the binding between DNMT1 and MEG3 promoter. The simultaneous overexpression of DNMT1 and MEG3 restored the inhibition of osteogenic differentiation caused by DNMT1 overexpression alone. CONCLUSIONS Our findings indicated that DNMT1 mediated the hypermethylation of MEG3 promoter in BMSCs, and DNMT1/MEG3/BMP4 pathway modulated osteogenic differentiation of BMSCs in pediatric AA.
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Affiliation(s)
- Huanhuan Li
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Xueju Xu
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Dao Wang
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yuan Zhang
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Jiao Chen
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Bai Li
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Shufang Su
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Linlin Wei
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Hongliang You
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yingqi Fang
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yingchao Wang
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Yufeng Liu
- Department of Pediatrics, First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China.
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16
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Interplay between p53 and non-coding RNAs in the regulation of EMT in breast cancer. Cell Death Dis 2021; 12:17. [PMID: 33414456 PMCID: PMC7791039 DOI: 10.1038/s41419-020-03327-7] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 12/02/2020] [Accepted: 12/04/2020] [Indexed: 02/06/2023]
Abstract
The epithelial-mesenchymal transition (EMT) plays a pivotal role in the differentiation of vertebrates and is critically important in tumorigenesis. Using this evolutionarily conserved mechanism, cancer cells become drug-resistant and acquire the ability to escape the cytotoxic effect of anti-cancer drugs. In addition, these cells gain invasive features and increased mobility thereby promoting metastases. In this respect, the process of EMT is critical for dissemination of solid tumors including breast cancer. It has been shown that miRNAs are instrumental for the regulation of EMT, where they play both positive and negative roles often as a part of a feed-back loop. Recent studies have highlighted a novel association of p53 and EMT where the mutation status of p53 is critically important for the outcome of this process. Interestingly, p53 has been shown to mediate its effects via the miRNA-dependent mechanism that targets master-regulators of EMT, such as Zeb1/2, Snail, Slug, and Twist1. This regulation often involves interactions of miRNAs with lncRNAs. In this review, we present a detailed overview of miRNA/lncRNA-dependent mechanisms that control interplay between p53 and master-regulators of EMT and their importance for breast cancer.
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17
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Mansour MA. SP3 is associated with migration, invasion, and Akt/PKB signalling in MDA-MB-231 breast cancer cells. J Biochem Mol Toxicol 2020; 35:e22657. [PMID: 33113244 DOI: 10.1002/jbt.22657] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 09/06/2020] [Accepted: 10/09/2020] [Indexed: 12/14/2022]
Abstract
Specificity proteins (SPs) have pro-oncogenic functions in cancer cells, ranging from cancer cell proliferation, migration, invasion, and angiogenesis. There is strong evidence that several antineoplastic drugs target depletion of SP proteins via different pathways. However, the mode of action of SP3 and the underlying consequences of its depletion are not well understood. Here, we demonstrate that SP3 is overexpressed in invasive breast cancer cells vs normal counterparts. The gene expression analysis from The Cancer Genome Atlas datasets indicated that SP3 is strongly correlated with Akt signalling-related proteins, G protein subunit alpha 13, and RAB33B (RAB33B, member RAS oncogene family). RNA interference of SP3 decreased active phosphorylation of Akt at serine and threonine sites. These findings indicate that SP3 exhibits a pro-oncogenic function, which clearly fits the description of an nononcogene addiction gene. Future analyses are prompted to uncover the SP3 gene regulation function and to reveal downstream targets of SP3 in breast cancer.
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Affiliation(s)
- Mohammed A Mansour
- Division of Human Sciences, School of Applied Sciences, London South Bank University, London, UK.,Biochemistry Division, Department of Chemistry, Faculty of Science, Tanta University, Tanta, Egypt
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18
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Melatonin Promotes Neuroprotection of H2O2-induced Neural Stem Cells via lncRNA MEG3/miRNA-27a-3p/MAP2K4 axis. Neuroscience 2020; 446:69-79. [DOI: 10.1016/j.neuroscience.2020.06.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 05/12/2020] [Accepted: 06/18/2020] [Indexed: 11/20/2022]
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19
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The roles of long noncoding RNAs in breast cancer metastasis. Cell Death Dis 2020; 11:749. [PMID: 32929060 PMCID: PMC7490374 DOI: 10.1038/s41419-020-02954-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/19/2020] [Accepted: 08/27/2020] [Indexed: 02/07/2023]
Abstract
Breast cancer is the most significant threat to female health. Breast cancer metastasis is the major cause of mortality in breast cancer patients. To fully unravel the molecular mechanisms that underlie the breast cancer cell metastasis is critical for developing strategies to improve survival and prognosis in breast cancer patients. Recent studies have revealed that the long noncoding RNAs (lncRNAs) are involved in breast cancer metastasis through a variety of molecule mechanisms, though the precise functional details of these lncRNAs are yet to be clarified. In the present review, we focus on the functions of lncRNAs in breast cancer invasion and metastasis, with particular emphasis on the functional properties, the regulatory factors, the therapeutic promise, as well as the future challenges in studying these lncRNA.
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20
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Wang Z, Xu R. lncRNA PART1 Promotes Breast Cancer Cell Progression by Directly Targeting miR-4516. Cancer Manag Res 2020; 12:7753-7760. [PMID: 32922076 PMCID: PMC7457826 DOI: 10.2147/cmar.s249296] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Accepted: 07/07/2020] [Indexed: 12/15/2022] Open
Abstract
Introduction Breast cancer is a serious threat to human health. It is meaningful to study the pathogenesis of breast cancer. lncRNAs have been found to play vital roles in numerous biological processes including development, immunology and cancer. Methods qRT-PCR was performed to examine the expressions of PART1 and miR-4516. CCK-8 assay, colony formation assay and transwell assay were used to examine the progression of breast cancer cells. Results In this study, we showed that lncRNA PART1 was highly expressed in breast cancer cells. Knockdown of PART1 induced decreased proliferation, invasion and migration of breast cancer cells. Moreover, we found that PART1 can bind to miR-4516 directly. We also found that inhibition of miR-4516 could rescue the decreased proliferation, migration and invasion of breast cancer cells induced by knockdown of PART1. Discussion lncRNA PART1 and miR-4516 were proven to be involved in the progression of many cancers. However, the roles of lncRNA PART1 and miR-4516 in the regulation of breast cancer remain unknown. Here, we demonstrated that PART1 can bind to miR-4516 to decrease the expression of miR-4516 and promote the development of breast cancer.
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Affiliation(s)
- Zhuo Wang
- Department of Breast Surgery, The First People's Hospital of Jingzhou, Jingzhou 434000, Hubei, People's Republic of China
| | - Ruqing Xu
- Department of Breast Surgery, The First People's Hospital of Jingzhou, Jingzhou 434000, Hubei, People's Republic of China
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21
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Li H, Wang P, Liu J, Liu W, Wu X, Ding J, Kang J, Li J, Lu J, Pan G. Hypermethylation of lncRNA MEG3 impairs chemosensitivity of breast cancer cells. J Clin Lab Anal 2020; 34:e23369. [PMID: 32618397 PMCID: PMC7521317 DOI: 10.1002/jcla.23369] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 03/13/2020] [Accepted: 04/02/2020] [Indexed: 01/01/2023] Open
Abstract
Background Chemoresistance posed a barrier to successful treatment of breast cancer (BC), and lncRNA MEG3 has been documented to implicate in BC development. However, whether MEG3 methylation, which led to low MEG3 expression, was relevant to BC progression and chemoresistance remained uncertain. Methods In the aggregate, 374 pairs of tumor tissues and adjacent normal tissues were collected from pathologically confirmed BC patients, and four BC cell lines, including MDA‐MB‐231, Bcap‐37, MCF‐7, and SK‐BR‐3, were purchased. Moreover, methylation‐specific polymerase chain reaction (PCR) was adopted to evaluate the methylation status of BC tissues and cell lines, and chemo‐tolerance of BC cell lines was assessed by performing MTT assay. Concurrently, transwell assay and scratch assay were carried out to estimate the migratory and invasive capability of BC cell lines. Results Methylated MEG3, lowly expressed MEG3, large tumor size (≥2 cm), advanced TNM grade and lymphatic metastasis were potentially symbolic of poor prognosis among BC patients (P < .05). Besides, MDA‐MB‐231 cell line exhibited the strongest resistance against paclitaxel, adriamycin, and vinorelbine (P < .05), while MCF‐7 cell line seemed more sensitive against these drugs than any other BC cell line (P < .05). Furthermore, pcDNA3.1‐MEG3 and 5‐Aza‐dC markedly sensitized MDA‐MB‐231 and MCF‐7 cell lines against the drug treatments (P < .05). Simultaneously, proliferation and metastasis of the BC cell lines were slowed down under the force of pcDNA3.1‐MEG3 and 5‐Aza‐dC (P < .05). Conclusion Preventing methylation of MEG3 might matter in lessening BC chemoresistance, owing to its hindering proliferation and metastasis of BC cells.
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Affiliation(s)
- Hongchang Li
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Puhua Wang
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jiazhe Liu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Weiyan Liu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Xubo Wu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Junbin Ding
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jie Kang
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jindong Li
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Jingfeng Lu
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
| | - Gaofeng Pan
- Department of General Surgery, Institute of Fudan-Minhang Academic Health System, Minhang Hospital, Fudan University, Shanghai, China
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22
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Zhao D, Peng Q, Wang L, Li C, Lv Y, Liu Y, Wang Z, Fang R, Wang J, Liu Z, Xu W. Identification of a six-lncRNA signature based on a competing endogenous RNA network for predicting the risk of tumour recurrence in bladder cancer patients. J Cancer 2020; 11:108-120. [PMID: 31892978 PMCID: PMC6930402 DOI: 10.7150/jca.35801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Accepted: 09/11/2019] [Indexed: 12/15/2022] Open
Abstract
Bladder cancer (BC) is the most common malignancy involving the urinary system, and is characterized by a high recurrence rate. It is important to identify potential lncRNA signatures capable of predicting tumour recurrence risk and assessing recurrence prognosis in BC patients. We extracted data from The Cancer Genome Atlas and identified 381 differentially expressed lncRNAs, 855 mRNAs and 70 miRNAs between non-recurrent and recurrent BC tissues. Subsequently, a competing endogenous RNA (ceRNA) network composed of 29 lncRNAs, 13 miRNAs and 4 mRNAs was established. We used univariate and multivariate Cox regression to analyse the relationship between the 29 lncRNAs and recurrence-free survival (RFS) in BC patients. Six lncRNAs had significant prognostic values, and their cumulative risk score indicated that this 6-lncRNA signature independently predicted RFS in BC patients. We applied a receiver operating characteristic (ROC) analysis to assess the efficiency of our prognostic models. High-risk patients exhibited a poorer prognosis than low-risk patients did. Additionally, the 6-lncRNA signature showed a significant correlation with BC clinicopathological characteristics, which indicates that it could be used for effective risk stratification. The current study provides novel insights into the lncRNA-related ceRNA network and this 6-lncRNA signature may be an independent prognostic factor in predicting the recurrence of BC patients.
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Affiliation(s)
- Danfeng Zhao
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China.,Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, P. R. China
| | - Qiang Peng
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China
| | - Lu Wang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China.,Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, P. R. China
| | - Cong Li
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China
| | - Yulin Lv
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China.,Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, P. R. China
| | - Yong Liu
- Department of Urology, Qitaihe People's Hospital, Qitaihe, P.R. China
| | - Zhichao Wang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China
| | - Ruizhe Fang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China
| | - Jiaqi Wang
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China.,Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, P. R. China
| | - Zhongqing Liu
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China
| | - Wanhai Xu
- Department of Urology, the Fourth Hospital of Harbin Medical University, Harbin Medical University, Harbin, P. R. China.,Heilongjiang Key Laboratory of Scientific Research in Urology, Harbin, P. R. China
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23
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Huang QY, Liu GF, Qian XL, Tang LB, Huang QY, Xiong LX. Long Non-Coding RNA: Dual Effects on Breast Cancer Metastasis and Clinical Applications. Cancers (Basel) 2019; 11:E1802. [PMID: 31744046 PMCID: PMC6896003 DOI: 10.3390/cancers11111802] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 11/10/2019] [Accepted: 11/12/2019] [Indexed: 12/24/2022] Open
Abstract
As a highly heterogeneous malignancy, breast cancer (BC) has become the most significant threat to female health. Distant metastasis and therapy resistance of BC are responsible for most of the cases of mortality and recurrence. Distant metastasis relies on an array of processes, such as cell proliferation, epithelial-to-mesenchymal transition (EMT), mesenchymal-to-epithelial transition (MET), and angiogenesis. Long non-coding RNA (lncRNA) refers to a class of non-coding RNA with a length of over 200 nucleotides. Currently, a rising number of studies have managed to investigate the association between BC and lncRNA. In this study, we summarized how lncRNA has dual effects in BC metastasis by regulating invasion, migration, and distant metastasis of BC cells. We also emphasize that lncRNA has crucial regulatory effects in the stemness and angiogenesis of BC. Clinically, some lncRNAs can regulate chemotherapy sensitivity in BC patients and may function as novel biomarkers to diagnose or predict prognosis for BC patients. The exact impact on clinical relevance deserves further study. This review can be an approach to understanding the dual effects of lncRNAs in BC, thereby linking lncRNAs to quasi-personalized treatment in the future.
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Affiliation(s)
- Qi-Yuan Huang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Q.-Y.H.); (X.-L.Q.); (L.-B.T.); (Q.-Y.H.)
- Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Guo-Feng Liu
- First Clinical Medical College, Nanchang University, Nanchang 330006, China;
| | - Xian-Ling Qian
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Q.-Y.H.); (X.-L.Q.); (L.-B.T.); (Q.-Y.H.)
- First Clinical Medical College, Nanchang University, Nanchang 330006, China;
| | - Li-Bo Tang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Q.-Y.H.); (X.-L.Q.); (L.-B.T.); (Q.-Y.H.)
- Second Clinical Medical College, Nanchang University, Nanchang 330006, China
| | - Qing-Yun Huang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Q.-Y.H.); (X.-L.Q.); (L.-B.T.); (Q.-Y.H.)
| | - Li-Xia Xiong
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang 330006, China; (Q.-Y.H.); (X.-L.Q.); (L.-B.T.); (Q.-Y.H.)
- Jiangxi Province Key Laboratory of Tumor Pathogenesis and Molecular Pathology, Nanchang 330006, China
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24
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Han Y, Ma L, Zhao L, Feng W, Zheng X. Rosmarinic inhibits cell proliferation, invasion and migration via up-regulating miR-506 and suppressing MMP2/16 expression in pancreatic cancer. Biomed Pharmacother 2019; 115:108878. [PMID: 31060006 DOI: 10.1016/j.biopha.2019.108878] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/29/2019] [Accepted: 04/11/2019] [Indexed: 12/12/2022] Open
Abstract
Pancreatic cancer is the fourth leading cause of cancer-related deaths worldwide. However, therapeutic strategies for the treatment of pancreatic cancer are still limited. Therefore, it is urgent for us to develop novel effective therapies for pancreatic cancer. In this study, we explored the effects of rosmarinic acid on pancreatic progression and explored the underlying molecular mechanisms. Rosmarinic acid significantly suppressed cell viability, cell growth, cell invasion and migration as well as epithelial mesenchymal transition (EMT) of pancreatic cancer cells, and induced cell apoptosis in pancreatic cells. In addition, rosmarinic acid significantly up-regulated the expression of miR-506 in pancreatic cancer cells, and knockdown of miR-506 attenuated the suppressive effects of rosmarinic acid on cell growth, cell invasion and migration and EMT, and prevented the enhanced effects of rosmarinic acid on cell apoptosis in pancreatic cancer cells. Mechanistically, the luciferase reporter assay showed that miR-506 targeted the 3' untranslated region of matrix metalloproteinase (MMP)-2/16, and miR-506 overexpression and rosmarinic acid treatment suppressed the expression of MMP2/16 in pancreatic cancer cells. Overexpression of MMP2/16 attenuated the inhibitory effects of rosmarinic acid on pancreatic cell invasion and migration. In vivo studies showed that rosmarinic acid dose-dependently suppressed tumor growth of pancreatic cancer cells, and increased the expression of miR-506, while suppressed the expression of MMP2/16 and Ki-67 in dissected tumor tissues from xenograft nude mice. Collectively, our results for the first time revealed the anti-tumor effects of rosmarinic acid in pancreatic cancer, and the anti-tumor effects of rosmarinic acid were via regulating the miR-506/MMP2/16 axis in pancreatic cancer.
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Affiliation(s)
- Yongguang Han
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
| | - Ligang Ma
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
| | - Le Zhao
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
| | - Weisheng Feng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
| | - Xiaoke Zheng
- College of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, China.
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