1
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Xie H, Lu X. circNFATC3 facilitated the progression of oral squamous cell carcinoma via the miR-520h/LDHA axis. Open Med (Wars) 2023; 18:20230630. [PMID: 37398901 PMCID: PMC10308242 DOI: 10.1515/med-2023-0630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 11/16/2022] [Accepted: 01/05/2023] [Indexed: 07/04/2023] Open
Abstract
The aim of this study was to verify the effects of circular RNA nuclear factor of activated T-cells, cytoplasmic 3 (circNFATC3), in oral squamous cell carcinoma (OSCC) development. The levels of circNFATC3, microRNA-520h (miR-520h), and lactate dehydrogenase A (LDHA) were measured by qRT-PCR and western blot analysis. The cellular functions were assessed by using commercial kits, MTT assay, EdU assay, flow cytometry analysis, and transwell assay. The interactions between miR-520h and circNFATC3 or LDHA were confirmed by dual-luciferase reporter assay. Finally, the mice test was enforced to evaluate the character of circNFATC3. We observed that the contents of circNFATC3 and LDHA were upregulated and miR-520h levels were downregulated in OSCC tissues compared with those in paracancerous tissues. For functional analysis, circNFATC3 knockdown repressed the cell glycolysis metabolism, cell proliferation, migration, and invasion, although it improved cell apoptosis in OSCC cells. LDHA could regulate the development of OSCC. circNFATC3 acted as a miR-520h sponge to modulate LDHA expression. In addition, the absence of circNFATC3 subdued tumor growth in vivo. In conclusion, circNFATC3 promoted the advancement of OSCC by adjusting the miR-520h/LDHA axis.
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Affiliation(s)
- Hongguo Xie
- Department of Stomatology, Jingmen No. 1 People’s Hospital, Jingmen, 448000, Hubei, China
| | - Xiaopeng Lu
- Department of Stomatology, Jingmen No. 1 People’s Hospital, No. 168, Xiangshan Avenue, Duodao District,, Jingmen, 448000, Hubei, China
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2
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Balakittnen J, Weeramange CE, Wallace DF, Duijf PHG, Cristino AS, Kenny L, Vasani S, Punyadeera C. Noncoding RNAs in oral cancer. WILEY INTERDISCIPLINARY REVIEWS. RNA 2023; 14:e1754. [PMID: 35959932 PMCID: PMC10909450 DOI: 10.1002/wrna.1754] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 06/09/2022] [Accepted: 07/05/2022] [Indexed: 05/13/2023]
Abstract
Oral cancer (OC) is the most prevalent subtype of cancer arising in the head and neck region. OC risk is mainly attributed to behavioral risk factors such as exposure to tobacco and excessive alcohol consumption, and a lesser extent to viral infections such as human papillomaviruses and Epstein-Barr viruses. In addition to these acquired risk factors, heritable genetic factors have shown to be associated with OC risk. Despite the high incidence, biomarkers for OC diagnosis are lacking and consequently, patients are often diagnosed in advanced stages. This delay in diagnosis is reflected by poor overall outcomes of OC patients, where 5-year overall survival is around 50%. Among the biomarkers proposed for cancer detection, noncoding RNA (ncRNA) can be considered as one of the most promising categories of biomarkers due to their role in virtually all cellular processes. Similar to other cancer types, changes in expressions of ncRNAs have been reported in OC and a number of ncRNAs have diagnostic, prognostic, and therapeutic potential. Moreover, some ncRNAs are capable of regulating gene expression by various mechanisms. Therefore, elucidating the current literature on the four main types of ncRNAs namely, microRNA, lncRNA, snoRNA, piwi-RNA, and circular RNA in the context of OC pathogenesis is timely and would enable further improvements and innovations in diagnosis, prognosis, and treatment of OC. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development.
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Affiliation(s)
- Jaikrishna Balakittnen
- The Centre for Biomedical Technologies, The School of Biomedical Sciences, Faculty of HealthQueensland University of TechnologyKelvin GroveQueenslandAustralia
- Saliva & Liquid Biopsy Translational Laboratory, Griffith Institute for Drug DiscoveryGriffith UniversityNathanQueenslandAustralia
- Department of Medical Laboratory Sciences, Faculty of Allied Health SciencesUniversity of JaffnaJaffnaSri Lanka
| | - Chameera Ekanayake Weeramange
- Saliva & Liquid Biopsy Translational Laboratory, Griffith Institute for Drug DiscoveryGriffith UniversityNathanQueenslandAustralia
| | - Daniel F. Wallace
- Centre for Genomics and Personalised Health, School of Biomedical Sciences, Faculty of HealthQueensland University of TechnologyBrisbaneQueenslandAustralia
| | - Pascal H. G. Duijf
- Centre for Genomics and Personalised Health, School of Biomedical Sciences, Faculty of HealthQueensland University of TechnologyBrisbaneQueenslandAustralia
- Queensland University of Technology, School of Biomedical SciencesFaculty of Health at the Translational Research InstituteWoolloongabbaQueenslandAustralia
- Centre for Data Science, Queensland University of Queensland, TechnologyBrisbaneQueenslandAustralia
- Institute of Clinical Medicine, Faculty of Medicine, HerstonUniversity of OsloOsloNorway
- Department of Medical GeneticsOslo University HospitalOsloNorway
- University of Queensland Diamantina InstituteThe University of QueenslandBrisbaneQueenslandAustralia
| | | | - Liz Kenny
- Royal Brisbane and Women's Hospital, Cancer Care ServicesHerstonQueenslandAustralia
- Faculty of MedicineThe University of QueenslandBrisbaneQueenslandAustralia
| | - Sarju Vasani
- Royal Brisbane and Women's Hospital, Cancer Care ServicesHerstonQueenslandAustralia
- Department of OtolaryngologyRoyal Brisbane and Women's HospitalHerstonQueenslandAustralia
| | - Chamindie Punyadeera
- Saliva & Liquid Biopsy Translational Laboratory, Griffith Institute for Drug DiscoveryGriffith UniversityNathanQueenslandAustralia
- Queensland University of Technology, School of Biomedical SciencesFaculty of Health at the Translational Research InstituteWoolloongabbaQueenslandAustralia
- Menzies Health InstituteGriffith UniversityGold CoastQueenslandAustralia
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3
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Li R, Wang X, Zhu C, Wang K. lncRNA PVT1: a novel oncogene in multiple cancers. Cell Mol Biol Lett 2022; 27:84. [PMID: 36195846 PMCID: PMC9533616 DOI: 10.1186/s11658-022-00385-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Accepted: 09/07/2022] [Indexed: 12/01/2022] Open
Abstract
Long noncoding RNAs are involved in epigenetic gene modification, including binding to the chromatin rearrangement complex in pre-transcriptional regulation and to gene promoters in gene expression regulation, as well as acting as microRNA sponges to control messenger RNA levels in post-transcriptional regulation. An increasing number of studies have found that long noncoding RNA plasmacytoma variant translocation 1 (PVT1) plays an important role in cancer development. In this review of a large number of studies on PVT1, we found that PVT1 is closely related to tumor onset, proliferation, invasion, epithelial–mesenchymal transformation, and apoptosis, as well as poor prognosis and radiotherapy and chemotherapy resistance in some cancers. This review comprehensively describes PVT1 expression in various cancers and presents novel approaches to the diagnosis and treatment of cancer.
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Affiliation(s)
- Ruiming Li
- Department of Urology, Shengjing Hospital of China Medical University, #36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, China
| | - Xia Wang
- Department of Urology, Shengjing Hospital of China Medical University, #36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, China
| | - Chunming Zhu
- Department of Family Medicine, Shengjing Hospital of China Medical University, #36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, China.
| | - Kefeng Wang
- Department of Urology, Shengjing Hospital of China Medical University, #36 Sanhao Street, Heping District, Shenyang, 110004, Liaoning, China.
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4
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Wang S, Li W, Yang L, Yuan J, Wang L, Li N, Zhao H. CircPVT1 facilitates the progression of oral squamous cell carcinoma by regulating miR-143-3p/SLC7A11 axis through MAPK signaling pathway. Funct Integr Genomics 2022; 22:891-903. [PMID: 35624316 DOI: 10.1007/s10142-022-00865-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 04/07/2022] [Accepted: 04/30/2022] [Indexed: 11/04/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is a common malignant tumor occurring in the oral cavity. Circular RNAs (circRNAs) play a crucial regulatory role in many cancers. This study aimed to investigate the function of circRNA plasmacytoma variant translocation 1 (PVT1) (circPVT1) in OSCC and its potential mechanism. The levels of circPVT1, solute carrier family 7 member 11 (SLC7A11), and microRNA-143-3p (miR-143-3p) were examined by quantitative real-time PCR (qRT-PCR) or western blot assay. Cell proliferation, apoptosis, migration, and invasion were evaluated by Cell Counting Kit-8 (CCK-8), colony formation assay, flow cytometry, and transwell assay. The levels of apoptosis and proliferation-related proteins were examined by western blot. The targeting relationship between miR-143-3p and circPVT1 or SLC7A11 was verified by dual-luciferase reporter, RNA immunoprecipitation (RIP), and RNA pull-down assays. The levels of mitogen-activated protein kinase (MAPK) pathway-related proteins were measured by western blot. Xenograft assay was used to assess tumor growth in vivo. CircPVT1 and SLC7A11 were upregulated, while miR-143-3p was downregulated in OSCC tissues and cells. Silencing of circPVT1 or SLC7A11 suppressed proliferation, migration, and invasion and promoted apoptosis in OSCC cells. CircPVT1 upregulated SLC7A11 expression via sponging miR-143-3p. SLC7A11 upregulation alleviated the effect of circPVT1 knockdown on OSCC cell progression. Besides, circPVT1 modulated MAPK signaling pathway by regulating miR-143-3p. Moreover, circPVT1 knockdown inhibited tumor growth in vivo. Knockdown of circPVT1 impeded OSCC progression via the miR-143-3p/SLC7A11 axis through MAPK signaling pathway.
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Affiliation(s)
- Shiliang Wang
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Wenlu Li
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Long Yang
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Jianqiao Yuan
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Lin Wang
- Department of Gynecology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China
| | - Na Li
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China
| | - Hongyu Zhao
- Department of Dentistry, The First Affiliated Hospital of Zhengzhou University, No. 1, Jianshe East Road, Zhengzhou City, 450018, Henan Province, China.
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5
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Hua T, Luo Y. Circular RNA PVT1 promotes progression of thyroid cancer by competitively binding miR‑384. Exp Ther Med 2022; 24:629. [PMID: 36185502 PMCID: PMC9520360 DOI: 10.3892/etm.2022.11566] [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: 02/28/2022] [Accepted: 06/30/2022] [Indexed: 11/06/2022] Open
Abstract
Plasmacytoma variant translocation 1 circular RNA (circPVT1) is involved in the initiation and development of several types of cancer. However, the underlying molecular role of circPVT1 in tumorigenesis of thyroid cancer remains to be elucidated. In the present study, relative expression of circPVT1 was markedly upregulated in thyroid cancer compared with adjacent normal tissue. circPVT1 expression was associated with clinical stage and lymph node metastasis. Furthermore, Cell Counting Kit-8, colony formation and Transwell chamber assays demonstrated that knockdown of circPVT1 decreased proliferation, migration and invasion of thyroid cancer cells in vitro. Moreover, circPVT1 directly interacted with microRNA (miR)-384, as shown by bioinformatics prediction and dual luciferase and RNA pull-down assay. miR-384 inhibition partially reversed the circPVT1 knockdown-mediated inhibitory effect on proliferation, migration and invasion of thyroid cancer cells. In summary, these findings demonstrated that circPVT1 may be a potential therapeutic target for thyroid cancer.
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Affiliation(s)
- Tebo Hua
- Department of Thyroid Breast Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo, Zhejiang 315040, P.R. China
| | - Yong Luo
- Department of Thyroid Breast Surgery, Ningbo Medical Centre Lihuili Hospital, Ningbo, Zhejiang 315040, P.R. China
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Khatoon E, Hegde M, Kumar A, Daimary UD, Sethi G, Bishayee A, Kunnumakkara AB. The multifaceted role of STAT3 pathway and its implication as a potential therapeutic target in oral cancer. Arch Pharm Res 2022; 45:507-534. [PMID: 35987863 DOI: 10.1007/s12272-022-01398-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Accepted: 07/20/2022] [Indexed: 12/20/2022]
Abstract
Oral cancer is one of the leading causes of cancer-related deaths, and it has become a matter of serious concern due to the alarming rise in its incidence rate worldwide. Despite recent advancements in oral cancer treatment strategies, there are no significant improvements in patient's survival rate. Among the numerous cell signaling pathways involved in oral cancer development and progression, STAT3 is known to play a multifaceted oncogenic role in shaping the tumor pathophysiology. STAT3 hyperactivation in oral cancer contributes to survival, proliferation, invasion, epithelial to mesenchymal transition, metastasis, immunosuppression, chemoresistance, and poor prognosis. A plethora of pre-clinical and clinical studies have documented the role of STAT3 in the initiation and development of oral cancer and showed that STAT3 inhibition holds significant potential in the prevention and treatment of this cancer. However, to date, targeting STAT3 activation mainly involves inhibiting the upstream signaling molecules such as JAK and IL-6 receptors. The major challenge in targeting STAT3 lies in the complexity of its phosphorylation- and dimerization-independent functions, which are not affected by disrupting the upstream regulators. The present review delineates the significance of the STAT3 pathway in regulating various hallmarks of oral cancer. In addition, it highlights the STAT3 inhibitors identified to date through various preclinical and clinical studies that can be employed for the therapeutic intervention in oral cancer treatment.
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Affiliation(s)
- Elina Khatoon
- Cancer Biology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India.,DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India
| | - Mangala Hegde
- Cancer Biology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India.,DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India
| | - Aviral Kumar
- Cancer Biology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India.,DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India
| | - Uzini Devi Daimary
- Cancer Biology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India.,DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. .,NUS Centre for Cancer Research, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.
| | - Anupam Bishayee
- College of Osteopathic Medicine, Lake Erie College of Osteopathic Medicine, Bradenton, FL, 34211, USA.
| | - Ajaikumar B Kunnumakkara
- Cancer Biology Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India. .,DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Indian Institute of Technology (IIT) Guwahati, Guwahati, 781 039, Assam, India.
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7
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Ghafouri-Fard S, Khoshbakht T, Taheri M, Jamali E. A Concise Review on the Role of CircPVT1 in Tumorigenesis, Drug Sensitivity, and Cancer Prognosis. Front Oncol 2021; 11:762960. [PMID: 34804965 PMCID: PMC8599443 DOI: 10.3389/fonc.2021.762960] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 10/15/2021] [Indexed: 12/16/2022] Open
Abstract
CircPVT1 (hsa_circ_0001821) is a cancer-related circular RNA (circRNA) that originated from a genomic locus on chromosome 8q24. This locus has been previously found to encode the oncogenic long non-coding RNA PVT1. Expression of this circRNA has been found to be upregulated in diverse neoplastic conditions. CircPVT1 acts as a sponge for miR-125a, miR-125b, miR-124-3p, miR-30a-5p, miR-205-5p, miR-423-5p, miR-526b, miR-137, miR-145-5p, miR-497, miR-30d/e, miR-455-5p, miR-29a-3p, miR-204-5p, miR-149, miR-106a-5p, miR-377, miR-3666, miR-203, and miR-199a-5p. Moreover, it can regulate the activities of PI3K/AKT, Wnt5a/Ror2, E2F2, and HIF-1α. Upregulation of circPVT1 has been correlated with decreased survival of patients with different cancer types. In the current review, we explain the oncogenic impact of circPVT1 in different tissues based on evidence from in vitro, in vivo, and clinical investigations.
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Affiliation(s)
- Soudeh Ghafouri-Fard
- Department of Medical Genetics, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Tayyebeh Khoshbakht
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Taheri
- Urology and Nephrology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Institute of Human Genetics, Jena University Hospital, Jena, Germany
| | - Elena Jamali
- Skull Base Research Center, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.,Department of Pathology, Loghman Hakim Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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8
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Traversa D, Simonetti G, Tolomeo D, Visci G, Macchia G, Ghetti M, Martinelli G, Kristensen LS, Storlazzi CT. Unravelling similarities and differences in the role of circular and linear PVT1 in cancer and human disease. Br J Cancer 2021; 126:835-850. [PMID: 34754096 PMCID: PMC8927338 DOI: 10.1038/s41416-021-01584-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/27/2021] [Accepted: 10/04/2021] [Indexed: 12/15/2022] Open
Abstract
The plasmacytoma variant translocation 1 (PVT1) is a long non-coding RNA gene involved in human disease, mainly in cancer onset/progression. Although widely analysed, its biological roles need to be further clarified. Notably, functional studies on PVT1 are complicated by the occurrence of multiple transcript variants, linear and circular, which generate technical issues in the experimental procedures used to evaluate its impact on human disease. Among the many PVT1 transcripts, the linear PVT1 (lncPVT1) and the circular hsa_circ_0001821 (circPVT1) are frequently reported to perform similar pathologic and pro-tumorigenic functions when overexpressed. The stimulation of cell proliferation, invasion and drug resistance, cell metabolism regulation, and apoptosis inhibition is controlled through multiple targets, including MYC, p21, STAT3, vimentin, cadherins, the PI3K/AKT, HK2, BCL2, and CASP3. However, some of this evidence may originate from an incorrect evaluation of these transcripts as two separate molecules, as they share the lncPVT1 exon-2 sequence. We here summarise lncPVT1/circPVT1 functions by mainly focusing on shared pathways, pointing out the potential bias that may exist when the biological role of each transcript is analysed. These considerations may improve the knowledge about lncPVT1/circPVT1 and their specific targets, which deserve further studies due to their diagnostic, prognostic, and therapeutic potential.
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Affiliation(s)
- Debora Traversa
- Department of Biology, University of Bari "Aldo Moro", Bari, Italy
| | - Giorgia Simonetti
- IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, FC, Italy
| | - Doron Tolomeo
- Department of Biology, University of Bari "Aldo Moro", Bari, Italy
| | - Grazia Visci
- Department of Biology, University of Bari "Aldo Moro", Bari, Italy
| | - Gemma Macchia
- Department of Biology, University of Bari "Aldo Moro", Bari, Italy
| | - Martina Ghetti
- IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, FC, Italy
| | - Giovanni Martinelli
- IRCCS Istituto Romagnolo per lo Studio dei Tumori (IRST) "Dino Amadori", Meldola, FC, Italy
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9
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Lin Z, Tang X, Wang L, Ling L. Prognostic and clinicopathological value of circPVT1 in human cancers: A meta-analysis. Cancer Rep (Hoboken) 2021; 4:e1385. [PMID: 33793089 PMCID: PMC8551984 DOI: 10.1002/cnr2.1385] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 03/09/2021] [Accepted: 03/15/2021] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Circular RNA PVT1 (circPVT1) is significantly upregulated in various human cancers and is related to poor clinical outcome of cancer patients. However, the prognostic and clinicopathological value of circPVT1 in diverse human cancers remains controversial and inconclusive. AIM The objective of our study is to evaluate the prognostic and clinicopathological role of circPVT1 for cancer patients. METHODS AND RESULTS PubMed, Embase, Web of Science, and Cochrane Library were searched for eligible studies by October 1, 2020. The correlation between circPVT1 expression, and overall survival (OS) and clinical parameters was assessed by pooled hazard ratios (HRs) and odds ratios (ORs) with 95% confidence intervals (CIs). Subgroup analyses, heterogeneity, and publication bias were conducted to further enhance reliability. Twelve studies (1282 patients) were selected for this meta-analysis, including 11 on prognosis and 10 on clinicopathological parameters. Elevated expression of circPVT1 was associated with a worse OS in cancer patients (HR, 2.009; 95% CI, 1.667-2.408, 1.892; P < .001). For clinicopathological value, upregulation of circPVT1 was closely related to poor clinical parameters lymph node metastasis (OR = 2.019; 95% CI, 1.026-3.976; P = .042; I2 = 77.5%; PH = 0.000), late clinical stage (OR = 3.594; 95% CI, 1.828-7.065; P < .001; I2 = 71.7%; PH = 0.001), distant metastasis (OR = 4.598; 95% CI, 1.411-14.988; P = .011; I2 = 78.1%; PH = 0.001), and chemoresistant (OR = 6.400; 95% CI, 2.107-19.441; P = .001; I2 = 49.6%; PH = 0.159). CONCLUSION High expression of circPVT1 is correlated with unfavorable prognosis of cancer patients, indicating that circPVT1 can function as a potential prognostic biomarker in human cancer.
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Affiliation(s)
- Zhengjun Lin
- Department of OrthopedicsThe Second Xiangya Hospital Central South UniversityChangshaChina
- Xiangya School of MedicineCentral South UniversityChangshaChina
| | - Xianzhe Tang
- Department of OrthopedicsChenzhou No.1 people's HospitalChenzhouChina
| | - Lu Wang
- Department of OrthopedicsThe Second Xiangya Hospital Central South UniversityChangshaChina
| | - Lin Ling
- Department of OrthopedicsThe Second Xiangya Hospital Central South UniversityChangshaChina
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10
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Chen Z, Fan T, Zhao X, Zhang Z. Depleting SOX2 improves ischemic stroke via lncRNA PVT1/microRNA-24-3p/STAT3 axis. Mol Med 2021; 27:107. [PMID: 34521353 PMCID: PMC8439026 DOI: 10.1186/s10020-021-00346-8] [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: 02/19/2021] [Accepted: 07/26/2021] [Indexed: 11/10/2022] Open
Abstract
Objectives Studies have widely explored in the filed of ischemic stroke (IS) with their focus on transcription factors. However, few studies have pivoted on sex determining region Y-box 2 (SOX2) in IS. Thus, this study is launched to figure out the mechanisms of SOX2 in IS. Methods Rat middle cerebral artery occlusion (MCAO) was established as a stroke model. MCAO rats were injected with depleted SOX2 or long non-coding RNA plasmacytoma variant translocation 1 (PVT1) to explore their roles in neurological deficits, cerebral water content, neuron survival, apoptosis and oxidative stress. The relationship among SOX2, PVT1, microRNA (miR)-24-3p and signal transducer and activator of transcription 3 (STAT3) was verified by a series of experiments. Results SOX2, PVT1 and STAT3 were highly expressed while miR-24-3p was poorly expressed in cerebral cortex tissues of MCAO rats. Depleted SOX2 or PVT1 alleviated brain injury in MCAO rats as reflected by neuronal apoptosis and oxidative stress restriction, brain water content reduction, and neurological deficit and neuron survival improvements. Overexpression of PVT1 functioned oppositely. Restored miR-24-3p abolished PVT1 overexpression-induced brain injury in MCAO rats. SOX2 directly promoted PVT1 expression and further increased STAT3 by sponging miR-24-3p. Conclusion This study presents that depleting SOX2 improves IS via PVT1/miR-24-3p/STAT3 axis which may broaden our knowledge about the mechanisms of SOX2/PVT1/miR-24-3p/STAT3 axis and provide a reference of therapy for IS.
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Affiliation(s)
- Zhongjun Chen
- Neurological Intervention Department, Dalian Municipal Central Hospital, Dalian, 116033, Liaoning, China
| | - Tieping Fan
- Neurological Intervention Department, Dalian Municipal Central Hospital, Dalian, 116033, Liaoning, China
| | - Xusheng Zhao
- Neurological Intervention Department, Dalian Municipal Central Hospital, Dalian, 116033, Liaoning, China
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11
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Qiu F, Qiao B, Zhang N, Fang Z, Feng L, Zhang S, Qiu W. Blocking circ-SCMH1 (hsa_circ_0011946) suppresses acquired DDP resistance of oral squamous cell carcinoma (OSCC) cells both in vitro and in vivo by sponging miR-338-3p and regulating LIN28B. Cancer Cell Int 2021; 21:412. [PMID: 34353342 PMCID: PMC8340538 DOI: 10.1186/s12935-021-02110-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 07/22/2021] [Indexed: 02/08/2023] Open
Abstract
Background Circular RNAs (circRNAs) could participate in cis-dichlorodiammineplatinum (DDP) resistance of human cancers. However, circRNAs role in DDP resistance of oral squamous cell carcinoma (OSCC) progression remains largely undeveloped. Here, we attempted to explore the role of circ-SCMH1 (ID hsa_circ_0011946) in acquired DDP resistance. Methods Expression of circ-SCMH1, microRNA (miR)-338-3p and Lin-28 homolog B (LIN28B) was detected by real-time quantitative PCR and western blotting, and their interactions were confirmed by dual-luciferase reporter assay, RNA immunoprecipitation and RNA pull-down assay. DDP resistance was assessed by MTT assay, colony formation assay, flow cytometry, transwell assays, western blotting, and xenograft experiment. Transmission electron microscopic analysis, nanoparticle tracking analysis and western blotting confirmed the characterizations of extracellular vesicles (EVs). Results Circ-SCMH1 was upregulated in DDP-resistant OSCC tissues and cells (SCC-15/DDP and CAL-27/DDP). Circ-SCMH1 knockdown suppressed the half-maximal inhibitory concentration of DDP, colony formation, and migration/invasion in SCC-15/DDP and CAL-27/DDP cells, but promoted apoptosis rate and apoptotic proteins (Bax and cleaved-caspase-3) expression. However, silencing miR-338-3p abrogated above effects, and overexpressing miR-338-3p mimicked that. Similarly, miR-338-3p overexpression role could be counteracted by restoring LIN28B. Moreover, interfering circ-SCMH1 retarded tumor growth of SCC-15/DDP cells in vivo with DDP treatment or not. Mechanistically, circ-SCMH1 directly sponged miR-338-3p in regulating LIN28B, a target gene for miR-338-3p. Notably, circ-SCMH1 was an EVs cargo, and DDP-resistant OSCC cells-derived EVs could provoke circ-SCMH1 upregulation in parental cells. Conclusion Circ-SCMH1 contributes to chemoresistance of DDP-resistant OSCC cells partially via EVs secretion and circ-SCMH1/miR-338-3p/LIN28B axis. Supplementary Information The online version contains supplementary material available at 10.1186/s12935-021-02110-8.
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Affiliation(s)
- Feng Qiu
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Bin Qiao
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Nan Zhang
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, 450001, Henan, China
| | - Zheng Fang
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Lu Feng
- Department of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, 450052, Henan, China
| | - Shanfeng Zhang
- Experimental Center for Basic Medicine, Biochemistry and Molecular Biology, Zhengzhou University, Zhengzhou, 450000, Henan, China.
| | - Weiliu Qiu
- Department of Oral and Maxillofacial Surgery, School of Medicine, Ninth People's Hospital, Shanghai Jiao Tong University, No. 639, Manufacturing Bureau Road, Shanghai, 200011, China.
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Zhou HX, Wang LY, Chen S, Wang DD, Fang Z. circ_0005379 inhibits the progression of oral squamous cell carcinoma by regulating the miR-17-5p/acyl-CoA oxidase 1 axis. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2021; 39:425-433. [PMID: 34409798 DOI: 10.7518/hxkq.2021.04.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
OBJECTIVES To investigate the effects of circ_0005379 on the proliferation, apoptosis, migration, and invasion of oral squamous cell carcinoma (OSCC) cells and its mechanism. METHODS Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression levels of circ_0005379 and miR-17-5p in OSCC tissues and SCC15 cell lines. Western blot was used to detect the expression levels of acyl-CoA oxidase 1 (ACOX1). The circ_0005379 overexpression vector was transfected into SCC15 cells. Methyl thiazolyl tetrazolium blue staining, flow cytometry, Transwell, and Western blot were used to detect the effects of circ_0005379 overexpression on the proliferation, apoptosis, migration, and invasion of SCC15 cells and the expression of E-cadherin, β-catenin, and Snail proteins. Dual luciferase reporter assay and RNA immunoprecipitation were used to examine the regulation of circ_0005379, miR-17-5p, miR-17-5p, and ACOX1 in SCC15 cells. A nude mouse xenograft model of SCC15 cells stably overexpressing circ_0005379 was established, and the effect of circ_0005379 overexpression on the growth of xenografts in nude mice was observed. RESULTS Compared with adjacent cancer tissues, the expression levels of circ_0005379 and ACOX1 proteins in OSCC tissues were decreased (P<0.05), and the expression level of miR-17-5p was increased (P<0.05). Compared with HOK-16A cells, the expression levels of circ_0005379 and ACOX1 proteins in SCC15 cell lines were decreased (P<0.05), and the expression level of miR-17-5p was increased (P<0.05). After overexpressing circ_0005379, the activity and number of migrating and invading SCC15 cells and the expression levels of β-catenin and Snail proteins were decreased (P<0.05); however, the apoptosis rate and expression level of E-cadherin protein were increased (P<0.05). In SCC15 cells, circ_0005379 targeted the negative regulation of miR-17-5p expression, and miR-17-5p targeted the negative regulation of ACOX1 expression. Overexpressing miR-17-5p or silencing ACOX1 could reverse the effects of circ_0005379 overexpression on the proliferation, apoptosis, migration, and invasion of OSCC cell lines. The tumor volume and weight of nude mice overexpressing circ_0005379 were decreased (P<0.05), the expression levels of circ_0005379 and ACOX1 protein in tumor tissues were increased (P<0.05), and the expression level of miR-17-5p was decreased (P<0.05). CONCLUSIONS circ_0005379 may inhibit the proliferation, migration, and invasion of OSCC cells by downregulating the expression of miR-17-5p and upregulating ACOX1, which promote apoptosis and inhibit tumor growth in vivo. circ_0005379 may be a potential target for OSCC treatment.
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Affiliation(s)
- Hai-Xia Zhou
- Center of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Lu-Yao Wang
- Center of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Shuai Chen
- Center of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Dan-Dan Wang
- Center of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Zheng Fang
- Center of Stomatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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Wu Z, He X, Chen S. Oncogenic circDHTKD1 promotes tumor growth and metastasis of oral squamous cell carcinoma in vitro and in vivo via upregulating miR-326-mediated GAB1. ACTA ACUST UNITED AC 2021; 54:e10837. [PMID: 34287578 PMCID: PMC8289343 DOI: 10.1590/1414-431x2020e10837] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 04/27/2021] [Indexed: 01/14/2023]
Abstract
Circular RNAs (circRNAs) have been extensively elucidated with regard to their significant implications in oral squamous cell carcinoma (OSCC). This study performed the functional investigation of circRNA dehydrogenase E1 and transketolase domain containing 1 (circDHTKD1) in OSCC. RNA expression levels of different molecules were measured via quantitative real-time polymerase chain reaction (qRT-PCR). Cellular behaviors were detected by 3-(4, 5-dimethylthiazol-2-y1)-2,5-diphenyl tetrazolium bromide (MTT) for cell viability, colony formation assay for clonal capacity, flow cytometry for cell apoptosis, wound healing assay for migration, and transwell assay for migration/invasion. Western blot was used for analyzing protein expression. RNA pull-down and dual-luciferase reporter assays were applied to assess the binding between targets. A xenograft tumor model was established in nude mice for in vivo experiments. Our expression analysis revealed that circDHTKD1 was upregulated in OSCC tissues and cells. circDHTKD1 knockdown was shown to impede OSCC cell growth and metastasis but motivate apoptosis. Additionally, circDHTKD1 served as a microRNA-326 (miR-326) sponge and the function of circDHTKD1 was achieved by sponging miR-326 in OSCC cells. Also, miR-326 inhibited OSCC development via targeting GRB2-associated-binding protein 1 (GAB1). circDHTKD1 could sponge miR-326 to alter GAB1 expression. Furthermore, circDHTKD1 contributed to OSCC progression in vivo via the miR-326/GAB1 axis. These data disclosed a specific circDHTKD1/miR-326/GAB1 signal axis in governing the malignant progression of OSCC, showing the considerable possibility of circDHTKD1 as a predictive and therapeutic target for clinical diagnosis and treatment of OSCC.
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Affiliation(s)
- Zhuangzhi Wu
- Department of Stomatology, The Second Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Xiaoning He
- Department of Stomatology, The Second Affiliated Hospital of Hainan Medical University, Hainan, China
| | - Siqi Chen
- Department of Stomatology, The Second Affiliated Hospital of Hainan Medical University, Hainan, China
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14
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Wang M, Zhang L, Ren W, Li S, Zhi K, Zheng J, Gao L. Diagnostic Value of CircRNAs as Potential Biomarkers in Oral Squamous Cell Carcinoma: a Meta-Analysis. Front Oncol 2021; 11:693284. [PMID: 34307158 PMCID: PMC8295991 DOI: 10.3389/fonc.2021.693284] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 06/22/2021] [Indexed: 12/20/2022] Open
Abstract
Introduction Circular RNAs (CircRNAs), an emerging non-coding RNA, have been demonstrated to be involved in tumorigenesis, metastasis, and cancer progression, and could represent novel potential biomarkers for diagnosing oral squamous cell carcinoma (OSCC). However, no meta-analysis has investigated the diagnostic role of circRNAs in OSCC. Hence, to investigate whether circRNAs could serve as specific biomarkers for OSCC, the present systematic review and meta-analysis evaluated the diagnostic efficiency of circRNAs in patients with OSCC. Materials and Methods A thorough search of online databases (Pubmed, Web of Science, Embase, and the Cochrane Library) was conducted to collect relevant studies up to March 30th, 2021. All eligible studies were case-control studies. The quality of each study was evaluated by the Quality Assessment of Diagnostic Accuracy Studies-2 (QUADAS-2) tool. STATA (version 15.1) and Review Manager (version 5.4) were employed to conduct the meta-analysis, and the PRISMA statement was adopted in this study. Results A total of 16 studies were included in the meta-analysis, with five studies on upregulated circRNAs, and 11 on downregulated circRNAs. The enrolled studies that met our eligibility criteria all derived from China. The pooled sensitivity (SEN), specificity (SPE), diagnostic odds ratio (DOR), positive likelihood ratio (PLR), negative likelihood ratio (NLR), and the area under receiver operating characteristics curve (AUC) with the 95% confidence intervals (95% CIs) were 0.74 (0.69–0.79), 0.79 (0.73–0.84), 10.74 (7.81–14.77), 3.50 (2.78–4.45), 0.33 (0.27–0.39) and 0.83 (0.79–0.86), respectively. The subgroup analysis demonstrated that serum, plasma, and saliva specimens had a better diagnostic performance than tissue samples, with a high value of sensitivity, specificity, DOR, and AUC values. The results also showed that the subgroups of upregulated circRNAs and a sample size of ≥100 manifested higher specificity, DOR, and AUC for cancer detection than downregulated circRNAs and a sample size of < 100. Conclusions A strong association was demonstrated between the dysregulated expression of circRNAs and the diagnosis of OSCC. Hence, circRNAs have the potential to function as promising biomarkers and therapeutic targets for OSCC. Systematic Review Registration PROSPERO, number CRD42021256857.
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Affiliation(s)
- Mingfei Wang
- School of Stomatology, Qingdao University, Qingdao, China
| | - Linfeng Zhang
- School of Stomatology, Qingdao University, Qingdao, China
| | - Wenhao Ren
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Shaoming Li
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Keqian Zhi
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jingjing Zheng
- Department of Endodontics, Key Laboratory of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ling Gao
- Department of Oral and Maxillofacial Surgery, Key Laboratory of Oral Clinical Medicine, The Affiliated Hospital of Qingdao University, Qingdao, China
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15
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Li P, Zhu K, Mo Y, Deng X, Jiang X, Shi L, Guo C, Zhang W, Zeng Z, Li G, Xiong W, Zhang S, Gong Z. Research Progress of circRNAs in Head and Neck Cancers. Front Oncol 2021; 11:616202. [PMID: 33996542 PMCID: PMC8117014 DOI: 10.3389/fonc.2021.616202] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 04/07/2021] [Indexed: 12/13/2022] Open
Abstract
Circular RNAs (circRNAs) are a novel type of non-coding RNAs. Because of their characteristics of a closed loop structure, disease- and tissue-specificity, and high conservation and stability, circRNAs have the potential to be biomarkers for disease diagnosis. Head and neck cancers are one of the most common malignant tumors with high incidence rates globally. Affected patients are often diagnosed at the advanced stage with poor prognosis, owing to the concealment of anatomic sites. The characteristics, functions, and specific mechanisms of circRNAs in head and neck cancers are increasingly being discovered, and they have important clinical significance for the early diagnosis, treatment, and prognosis evaluation of patients with cancer. In this study, the generation, characteristics, and functions of circRNAs, along with their regulatory mechanisms in head and neck cancers have been summarized. We report that circRNAs interact with molecules such as transcription and growth factors to influence specific pathways involved in tumorigenesis. We conclude that circRNAs have an important role to play in the proliferation, invasion, metastasis, energy and substance metabolism, and treatment resistance in cancers.
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Affiliation(s)
- Panchun Li
- Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Kunjie Zhu
- Department of Head and Neck Surgery, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Yongzhen Mo
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Xiangying Deng
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Xianjie Jiang
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Lei Shi
- Department of Pathology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Can Guo
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Wenling Zhang
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Zhaoyang Zeng
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Guiyuan Li
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Wei Xiong
- NHC Key Laboratory of Carcinogenesis, Cancer Research Institute and School of Basic Medical Sciences, Central South University, Changsha, China
| | - Shanshan Zhang
- Department of Stomatology, The Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China
| | - Zhaojian Gong
- Department of Oral and Maxillofacial Surgery, The Second Xiangya Hospital, Central South University, Changsha, China
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16
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Li M, Chi C, Zhou L, Chen Y, Tang X. Circular PVT1 regulates cell proliferation and invasion via miR-149-5p/FOXM1 axis in ovarian cancer. J Cancer 2021; 12:611-621. [PMID: 33391456 PMCID: PMC7738991 DOI: 10.7150/jca.52234] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 09/28/2020] [Indexed: 12/14/2022] Open
Abstract
Long non-coding RNA plasmacytoma variant translocation 1 (PVT1) is a dysregulated gene in malignancy and is associated with oncogenesis. In this study, we found PVT1 RNA was an ovarian specific expressing gene, and overexpressed in multiple cancer types, including ovarian cancer (OV). Higher expression levels of PVT1 are related to shorter survival time in OV patients, especially in patients with advanced stage and grade. Recent studies indicated circular PVT1 also had an important role in cancer progression, whose roles in OV remain unclear. Knockdown of circular PVT1 significantly suppressed OV cell proliferation, migration and invasion. Bioinformatics analysis demonstrated that circular PVT1 was involved in regulating angiogenesis, osteoblast differentiation, regulation of cell growth, type B pancreatic cell proliferation, negative regulation of apoptotic process, phospholipid homeostasis, regulation of neurogenesis, definitive hemopoiesis, cell migration, regulation of glucose metabolic process, central nervous system development and type 2 immune response. Our data showed miR-149-5p targeted FOXM1, which was regulated by circular PVT1. Forkhead Box M1 (FOXM1) expression in ovarian cancer exhibited high level when compared with normal tissues, and had relation with relatively poor survival. FOXM1 promoted cell viability and reduced FOXM1 could rescue circular influence of circular PVT1-caused carcinoma induction. In conclusion, circular PVT1 increased FOXM1 level via binding to miR-149-5p and thus affected ovarian cancer cell viability and migration.
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Affiliation(s)
- Min Li
- Department of Gynecology & Obstetrics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
| | - Chi Chi
- Department of Gynecology & Obstetrics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
| | - Liqin Zhou
- Department of Gynecology & Obstetrics, Suzhou Xiangcheng People's Hospital, Suzhou 215006, Jiangsu Province, China
| | - Youguo Chen
- Department of Gynecology & Obstetrics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
| | - Xiuwu Tang
- Department of Gynecology & Obstetrics, the First Affiliated Hospital of Soochow University, Suzhou 215006, Jiangsu Province, China
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Bu N, Dong Z, Zhang L, Zhu W, Wei F, Zheng S. CircPVT1 Regulates Cell Proliferation, Apoptosis and Glycolysis in Hepatocellular Carcinoma via miR-377/TRIM23 Axis. Cancer Manag Res 2020; 12:12945-12956. [PMID: 33364841 PMCID: PMC7751302 DOI: 10.2147/cmar.s280478] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Accepted: 11/20/2020] [Indexed: 12/14/2022] Open
Abstract
Background Recent studies reported that circular RNAs (circRNAs) exert essential functions in hepatocellular carcinoma (HCC) progression. However, the expression profile and function of circular RNA PVT1 (circPVT1) in HCC are not fully addressed. Thus, we aimed to probe into the function of circPVT1 in HCC development. Methods The levels of circPVT1, microRNA-377 (miR-377) and transcripts encoding tripartite motif containing 23 (TRIM23) were determined by qRT-PCR. The stability and localization of circPVT1 were examined by RNase R digestion assay and subcellular fraction assay, respectively. Cell proliferation and apoptosis were evaluated by MTT assay and flow cytometry analysis, respectively. The relationship between miR-377 and circPVT1 or TRIM23 was determined by dual-luciferase reporter assay and RNA immunoprecipitation (RIP). The protein expression of TRIM23 was measured by Western blot. The glycolysis level was assessed by specific kits and Seahorse Extracellular Flux Analyzer XF96. The function of circPVT1 in vivo was investigated in a murine xenograft model. Results CircPVT1 and TRIM23 levels were elevated, while miR-377 was decreased in HCC. CircPVT1 knockdown restrained proliferation and glycolysis, but enhanced apoptosis in HCC cells. CircPVT1 could bind to miR-377 and inhibition of miR-377 restored circPVT1 knockdown-mediated effect on HCC cells. TRIM23 was certified as a target of miR-377, and TRIM23 upregulation overturned the influence of miR-377 upregulation or circPVT1 silence on HCC progression. Moreover, circPVT1 knockdown restrained tumor growth in HCC in vivo. Conclusion CircPVT1 aggravated the progression of HCC by upregulating TRIM23 via sponging miR-377.
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Affiliation(s)
- Nan Bu
- Department of Gastroenterology, Chinese Medicine Hospital of Jiamusi City, Heilongjiang Province, Jiamusi, Heilongjiang, People's Republic of China
| | - Zheng Dong
- Department of General Surgery, Ningbo Mingzhou Hospital, Ningbo, Zhejinag, People's Republic of China
| | - Lingfeng Zhang
- Department of Hepatobiliary Surgery, The First People's Hospital of Huaihua City, Huaihua, Hunan, People's Republic of China
| | - Weibo Zhu
- Department of Medical Technology, Qujing Medical College, Qujing, Yunan, People's Republic of China
| | - Furong Wei
- Department of Gastroenterology, Central Hospital of Haining, Haining, Zhejinag, People's Republic of China
| | - Sheng Zheng
- Department of Gastroenterology, The Third People's Hospital of Yunnan Province, Kunming, Yunnan, People's Republic of China
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18
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Zhao C, Zhang G, Liu J, Zhang C, Yao Y, Liao W. Exosomal cargoes in OSCC: current findings and potential functions. PeerJ 2020; 8:e10062. [PMID: 33194377 PMCID: PMC7646305 DOI: 10.7717/peerj.10062] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 09/08/2020] [Indexed: 02/05/2023] Open
Abstract
Oral squamous cell carcinoma (OSCC) is the most prevalent malignancy in head and neck cancer, with high recurrence and mortality. Early diagnosis and efficient therapeutic strategies are vital for the treatment of OSCC patients. Exosomes can be isolated from a broad range of different cell types, implicating them as important factors in the regulation of human physiological and pathological processes. Due to their abundant cargo including proteins, lipids, and nucleic acids, exosomes have played a valuable diagnostic and therapeutic role across multiple diseases, including cancer. In this review, we summarize recent findings concerning the content within and participation of exosomes relating to OSCC and their roles in tumorigenesis, proliferation, migration, invasion, metastasis, and chemoresistance. We conclude this review by looking ahead to their potential utility in providing new methods for treating OSCC to inspire further research in this field.
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Affiliation(s)
- Chengzhi Zhao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Geru Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Jialing Liu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Chenghao Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China School of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Yang Yao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Oral Implantology, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
| | - Wen Liao
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, China
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19
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Circular RNA circ-PVT1 contributes to paclitaxel resistance of gastric cancer cells through the regulation of ZEB1 expression by sponging miR-124-3p. Biosci Rep 2020; 39:221384. [PMID: 31793989 PMCID: PMC6928529 DOI: 10.1042/bsr20193045] [Citation(s) in RCA: 91] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 11/22/2019] [Accepted: 11/28/2019] [Indexed: 02/07/2023] Open
Abstract
Gastric cancer (GC) is the fifth most commonly diagnosed malignancy. Paclitaxel (PTX) is an effective first-line chemotherapy drug in GC treatment, but the resistance of PTX attenuates the therapeutic effect. Circular RNA circ-PVT1 can exert the oncogenic effect in GC. But the function of circ-PVT1 involved in PTX resistance of GC is still unknown. In the present study, the expression levels of circ-PVT1, miR-124-3p and ZEB1 in PTX-resistant GC tissues and cells were detected by quantitative real-time polymerase chain reaction (RT-qPCR). PTX resistance in PTX-resistant cells was assessed by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide (MTT) assay. The protein levels of Zinc finger E-box binding homeobox 1 (ZEB1), P-glycoprotein (P-gp) and glutathione S-transferase (GST-π) were detected by Western blot assay. Cell apoptosis and invasion were measured in PTX-resistant cells by flow cytometry and transwell invasion assays, severally. The interaction between miR-124-3p and circ-PVT1 or ZEB1 was predicted by starBase software, and then verified by the dual-luciferase reporter assay. The role of circ-PVT1 in PTX resistance of GC in vivo was measured by xenograft tumor model. Our results showed that circ-PVT1 expression was up-regulated in PTX-resistant GC tissues and cells. Circ-PVT1 down-regulation enhanced PTX sensitivity in PTX-resistant GC cells by negatively regulating miR-124-3p. ZEB1 served as a direct target of miR-124-3p. Circ-PVT1 enhanced ZEB1 expression by sponging miR-124-3p. Circ-PVT1 knockdown increased PTX sensitivity of GC in vivo. Taken together, our studies disclosed that circ-PVT1 facilitated PTX resistance by up-regulating ZEB1 mediated via miR-124-3p, suggesting an underlying therapeutic strategy for GC.
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Fan HY, Jiang J, Tang YJ, Liang XH, Tang YL. CircRNAs: A New Chapter in Oral Squamous Cell Carcinoma Biology. Onco Targets Ther 2020; 13:9071-9083. [PMID: 32982296 PMCID: PMC7494394 DOI: 10.2147/ott.s263655] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 08/16/2020] [Indexed: 02/05/2023] Open
Abstract
With the rapid development of bioinformatics and gene sequencing technologies, understanding of circular RNAs (circRNAs) has been extended, and numerous studies have identified the key regulator role of circRNAs in a variety of diseases, especially in cancer. Recently, accumulated studies of oral squamous cell carcinoma (OSCC) have discovered the great potential of circRNAs, which can serve as prognostic or diagnostic biomarkers and affect the development and therapy of OSCC. In this review, we detail the new progress of circRNA research for OSCC in order to provide new strategies for clinical diagnosis and treatment.
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Affiliation(s)
- Hua-Yang Fan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Jian Jiang
- Department of Head and Neck Surgery, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, People's Republic of China
| | - Ya-Jie Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong, People's Republic of China
| | - Xin-Hua Liang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
| | - Ya-Ling Tang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan, People's Republic of China
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21
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The Circular RNA-miRNA Axis: A Special RNA Signature Regulatory Transcriptome as a Potential Biomarker for OSCC. MOLECULAR THERAPY. NUCLEIC ACIDS 2020; 22:352-361. [PMID: 33230440 PMCID: PMC7530261 DOI: 10.1016/j.omtn.2020.09.001] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is a highly recurrent form of cancer arising from the oral epithelium, which is the result of mutational change due to etiological factors such as tobacco, smoking, chewing of areca nuts, and alcohol consumption. OSCC occurrence has been observed to be prevalent in different regions of Pacific countries and in most Asian countries. Despite the accessibility of the oral cavity, OSCC is diagnosed at an extremely late stage of pathogenic tumor node metastasis pTNM (III–IV), resulting in a poor prognosis for the individual. Therefore, it is important to make definitive, early, and efficient diagnoses. Owing to the development of omic-natured studies, the presence of proteins, transcribed elements, metabolic products, and even microflora detected in saliva helps us to select biomarkers, which is an especially exciting potential because of the availability and the non-invasive nature of sample collection. Since the discovery of circular RNA (circRNA) by Sanger sequencing, it has been reported to play a pivotal role in several human diseases, including cancer. circRNA functions as a microRNA (miRNA) sponge in the regulation of mRNA expression, forming the circRNA-miRNA regulatory axis. In the case of OSCC, overexpression of different circRNAs exhibits both tumor-progressive and tumor-suppressive effects.
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22
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Zhu X, Du J, Gu Z. Circ-PVT1/miR-106a-5p/HK2 axis regulates cell growth, metastasis and glycolytic metabolism of oral squamous cell carcinoma. Mol Cell Biochem 2020; 474:147-158. [PMID: 32737775 DOI: 10.1007/s11010-020-03840-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 07/17/2020] [Indexed: 12/16/2022]
Abstract
Oral squamous cell carcinoma (OSCC) is the most commonly diagnosed oral cavity malignancy. A handful of circular RNAs (circRNAs) have recently shown to act as crucial regulators in OSCC, including circRNA plasmacytoma variant translocation 1 (circ-PVT1). However, further exploration is still needed for the underlying functional mechanism behind circ-PVT1 in OSCC. The levels of circ-PVT1, microRNA-106a-5p (miR-106a-5p) and hexokinase II (HK2) were all examined applying with quantitative real-time polymerase chain reaction (qRT-PCR). Cellular analyses (cell viability, apoptosis, metastasis and glycolysis) in vitro were performed via cell counting kit-8 (CCK-8), flow cytometry, transwell migration/invasion assays and glycolysis-related indications (glucose consumption, lactate production and ATP/ADP ratio). HK2 protein level was measured through western blot. Dual-luciferase reporter assay was conducted to study the interplay between miR-106a-5p and circ-PVT1 or HK2. Xenografts in mice were used for analyzing circ-PVT1 in vivo. Circ-PVT1 was expressed with abnormal high level while miR-106a-5p was down-regulated in OSCC tissues and cells. Circ-PVT1 knockdown reduced OSCC cell growth, metastasis and glycolysis. Moreover, circ-PVT1 acted in OSCC by functioning as a miR-106a-5p sponge. HK2 was a target of miR-106a-5p and miR-106a-5p played an anti-tumor role in OSCC by inhibiting HK2. Furthermore, HK2 could be regulated by circ-PVT1 via targeting miR-106a-5p. In xenograft models of mice, down-regulation of circ-PVT1 retarded tumorigenesis via the miR-106a-5p/HK2 axis. Our works suggested that circ-PVT1 directly combined with miR-106a-5p to mediate HK2 level, consequently regulating cellular behaviors in OSCC as a tumor promoter.
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MESH Headings
- Animals
- Apoptosis
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/metabolism
- Carcinoma, Squamous Cell/pathology
- Cell Movement
- Cell Proliferation
- Gene Expression Regulation, Neoplastic
- Glycolysis
- Hexokinase/genetics
- Hexokinase/metabolism
- Humans
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- MicroRNAs/genetics
- Mouth Neoplasms/genetics
- Mouth Neoplasms/metabolism
- Mouth Neoplasms/pathology
- Neoplasm Metastasis
- Prognosis
- RNA, Circular/genetics
- Tumor Cells, Cultured
- Xenograft Model Antitumor Assays
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Affiliation(s)
- Xiaoyan Zhu
- Department of Oral Restoration, Qingdao Campus of Qilu Hospital of Shandong University, Shibei District, No. 758 Hefei Road, Qingdao, 266000, Shandong, China
| | - Juan Du
- Disinfection Supply Center, Qingdao Municipal Hospital, Qingdao, 266011, Shandong, China
| | - Zhiqiang Gu
- Department of Oral Restoration, Qingdao Campus of Qilu Hospital of Shandong University, Shibei District, No. 758 Hefei Road, Qingdao, 266000, Shandong, China.
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23
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Cristóbal I, Luque M, Sanz-Alvarez M, Rojo F, García-Foncillas J. Clinical Impact and Regulation of the circCAMSAP1/ miR-328-5p/E2F1 Axis in Colorectal Cancer. Mol Ther 2020; 28:1387-1388. [PMID: 32413279 DOI: 10.1016/j.ymthe.2020.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Affiliation(s)
- Ion Cristóbal
- Cancer Unit for Research on Novel Therapeutic Targets, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, Madrid, Spain; Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, Madrid, Spain.
| | - Melani Luque
- Pathology Department, IIS-Fundación Jiménez Díaz-UAM, Madrid, Spain
| | | | - Federico Rojo
- Pathology Department, IIS-Fundación Jiménez Díaz-UAM, Madrid, Spain
| | - Jesús García-Foncillas
- Cancer Unit for Research on Novel Therapeutic Targets, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, Madrid, Spain; Translational Oncology Division, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, Madrid, Spain.
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24
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Cristóbal I, Caramés C, Rubio J, Sanz-Alvarez M, Luque M, Madoz-Gúrpide J, Rojo F, García-Foncillas J. Functional and Clinical Impact of CircRNAs in Oral Cancer. Cancers (Basel) 2020; 12:cancers12041041. [PMID: 32340253 PMCID: PMC7226580 DOI: 10.3390/cancers12041041] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 04/17/2020] [Accepted: 04/17/2020] [Indexed: 12/20/2022] Open
Abstract
The increasing number of recently published works regarding the role of circular RNAs (circRNAs) in oral cancer highlights the key contribution of this novel class of endogenous noncoding RNAs as regulators of critical signaling pathways and their clinical value as novel biomarkers. This review summarizes and puts into context the existing literature in order to clarify the relevance of circRNAs as novel mediators of oral cancer pathogenesis as well as their potential usefulness as predictors of clinical outcome and response to therapy in this disease.
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Affiliation(s)
- Ion Cristóbal
- Cancer Unit for Research on Novel Therapeutic Targets, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (C.C.); (J.R.)
- Translational Oncology Division, Oncohealth Institute, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain
- Correspondence: (I.C.); (J.G.-F.); Tel.: +34-915-504-800 (I.C. & J.G.-F.)
| | - Cristina Caramés
- Cancer Unit for Research on Novel Therapeutic Targets, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (C.C.); (J.R.)
- Medical Oncology Department, University Hospital “Fundación Jiménez Díaz”, UAM, E-28040 Madrid, Spain
| | - Jaime Rubio
- Cancer Unit for Research on Novel Therapeutic Targets, Oncohealth Institute, IIS-Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (C.C.); (J.R.)
- Medical Oncology Department, University Hospital “Fundación Jiménez Díaz”, UAM, E-28040 Madrid, Spain
| | - Marta Sanz-Alvarez
- Pathology Department, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (M.S.-A.); (M.L.); (J.M.-G.); (F.R.)
| | - Melani Luque
- Pathology Department, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (M.S.-A.); (M.L.); (J.M.-G.); (F.R.)
| | - Juan Madoz-Gúrpide
- Pathology Department, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (M.S.-A.); (M.L.); (J.M.-G.); (F.R.)
| | - Federico Rojo
- Pathology Department, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (M.S.-A.); (M.L.); (J.M.-G.); (F.R.)
| | - Jesús García-Foncillas
- Translational Oncology Division, Oncohealth Institute, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain
- Pathology Department, IIS- Fundación Jiménez Díaz-UAM, E-28040 Madrid, Spain; (M.S.-A.); (M.L.); (J.M.-G.); (F.R.)
- Correspondence: (I.C.); (J.G.-F.); Tel.: +34-915-504-800 (I.C. & J.G.-F.)
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