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Han MTT, Pornprasert S, Saeteng S, Tantraworasin A, Siwachat S, Thuropathum P, Chewaskulyong B, Cressey R. Small RNA Deep Sequencing of Circulating Small RNAs Discovers a Unique Panel of microRNAs as Feasible and Reliable Biomarkers of Non-Small Cell Lung Cancers in Northern Thailand. Asian Pac J Cancer Prev 2023; 24:3585-3598. [PMID: 37898867 PMCID: PMC10770667 DOI: 10.31557/apjcp.2023.24.10.3585] [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: 06/26/2023] [Accepted: 10/16/2023] [Indexed: 10/30/2023] Open
Abstract
OBJECTIVE This study aimed to assess the practicality and reliability of utilizing microRNAs (miRNAs) as a potential screening and diagnosing tool for non-small cell lung cancers (NSCLCs) in Northern Thailand. METHODS Small RNA sequencing and a literature review was performed to obtain a list of serum miRNA candidates. Serum levels of these selected miRNA candidates were measured in patients with NSCLC and healthy volunteers by real-time RT-PCR and receiver operating characteristic curve (ROC) were used to assess diagnostic performance. RESULTS Sequencing data revealed 148 known miRNAs and 230 novel putative miRNAs in serum samples; 19 serum miRNAs were significantly downregulated and 242 were upregulated. Seven miRNAs selected according to sequencing data and 11 miRNAs according to previous reports were evaluated in training cohort (45 lung cancer patients, 26 controls) and 6 miRNAs were found differentially expressed (p < 0.05, Mann Whitney U test) and associated (p < 0.05, Chi-square test) with NSCLC development. Further analysis and verification identified an optimal combination of 4 miRNAs composed of hsa-miR23a, hsa-miR26b, hsa-miR4488 and novel-130 to provide the optimal AUC of 0.901±0.034. Detection of serum miRNA by real-time RT-PCR showed good reproducibility with the coefficient of variation (CV) ≤ 4%. The optimal screening miRNAs panel was primarily identified through sequencing data of local patient population, thus indicating that the etiology of NSCLCs may differ from one population to other and thus require a unique panel of miRNAs for their identification. CONCLUSION Circulating miRNA is a feasible screening tool for NSCLCs. Nevertheless, populations with different lung cancer etiology may need to identify their own most suitable miRNA panel.
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Affiliation(s)
- Moe Thi Thi Han
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand.
| | - Sakorn Pornprasert
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand.
| | - Somcharoen Saeteng
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Thailand.
| | | | - Sophon Siwachat
- Department of Surgery, Faculty of Medicine, Chiang Mai University, Thailand.
| | | | | | - Ratchada Cressey
- Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand.
- Cancer Research Unit, Department of Medical Technology, Faculty of Associated Medical Sciences, Chiang Mai University, Thailand.
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Luo H, Yang Y, Zhou Y, Bai X, Hou Y. 1,4,5,6,7,8‑Hexahydropyrido[4,3‑d]pyrimidine inhibits HepG2 cell proliferation, migration and invasion, and induces apoptosis through the upregulation of miR‑26b‑5p by targeting CDK8. Oncol Lett 2023; 25:260. [PMID: 37205919 PMCID: PMC10189852 DOI: 10.3892/ol.2023.13846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/28/2023] [Indexed: 05/21/2023] Open
Abstract
1,4,5,6,7,8-Hexahydropyrido[4,3-d]pyrimidine (PPM) promotes apoptosis of HepG2 cells and serves a role in tumor suppression. However, the role of microRNA (miRNA) regulation in initiating apoptosis remains unclear. Therefore, the present study performed reverse transcription-quantitative PCR to investigate the association between PPM and miRNA, which demonstrated that PPM upregulated the expression of miR-26b-5p. Wound healing and Transwell assays showed that PPM inhibited the migration and invasion of HepG2 cells, and EdU staining experiments showed that PPM inhibited the proliferation of HepG2 cells. Transfection with miR-26b-5p inhibitor reversed the effects of PPM on HepG2 cells. Flow cytometry results showed that PPM promoted apoptosis of HepG2 cells by upregulating miRNA (miR)-26b-5p, and Western blotting results showed that PPM promoted the expression of apoptosis-associated protein Bax and inhibited the expression of Bcl-2 by upregulating miR-26b-5p. Using a proteomic approach combined with bioinformatics analysis, CDK8 was identified as a potential target of miR-26b-5p and was downregulated by miR-26b-5p overexpression. However, PPM induced HepG2 cell cycle arrest without the involvement of miR-26b-5p. Western blotting results showed that PPM upregulation of miR-26b-5p suppresses NF-κB/p65 signaling pathway in HepG2 cells by targeting of CDK8. The present results suggested that miR-26b-5p may function as a target gene of PPM and may serve a role in hepatocellular carcinoma treatment.
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Affiliation(s)
- Hanlin Luo
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Yang Yang
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Yanqiu Zhou
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
| | - Xianyong Bai
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
- Correspondence to: Professor Yun Hou or Professor Xianyong Bai, Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, 346 Guanhai Road, Laishan, Yantai, Shandong 264003, P.R. China, E-mail:
| | - Yun Hou
- Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, Yantai, Shandong 264003, P.R. China
- Correspondence to: Professor Yun Hou or Professor Xianyong Bai, Department of Histology and Embryology, College of Basic Medicine, Binzhou Medical University, 346 Guanhai Road, Laishan, Yantai, Shandong 264003, P.R. China, E-mail:
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Askaripour K, Żak A. A mechanistically approached review upon assorted cell lines stimulated by athermal electromagnetic irradiation. Cell Cycle 2023; 22:1319-1342. [PMID: 37144743 PMCID: PMC10228405 DOI: 10.1080/15384101.2023.2206682] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 11/21/2022] [Accepted: 11/21/2022] [Indexed: 05/06/2023] Open
Abstract
The probable influence of electromagnetic irradiation on cancer treatment has been deduced from the interaction of artificial electromagnetic emissions with biological organisms. Nonetheless, the suspected health effects induced by electromagnetic-based technology imply that such a treatment may contaminate the adjacent healthy cells. Thus, gaining mechanistic insights into the problem is required to avoid athermal health hazards. To tackle that, the current review, based upon in vitro studies into assorted cell lines, depicts the alterations in physiological processes triggered by electromagnetic irradiation via addressing gene regulatory cascades. Furthermore, decisive factors in the hypothesized cause-effect linkage in terms of the cell line-associated, exposure-associated, or endpoint-associated parameters are highlighted. As a result, subcellular structures such as aberrant Ca2+ channels, rich glycocalyx charge, or high water content in cancerous cells, which have attracted a great deal of attention, can explain their higher susceptibility compared with healthy cells under irradiation. Affected by cell components or geometry, the cellular biological window correlates with the metabolic or cell cycle status and determines the irradiation that causes the maximum influence. For instance, correlations between the frequency (or intensity) of irradiation and cell excitability or between the duration of irradiation and cell doubling time are observed. There are unspecified signaling pathways such as the pathway of PPAR-γ or MAPKs, and also proteins devoid of any investigation such as p14, or S phase-related and G2 phase-related proteins. Other chains, such as the cAMP connection with mitochondrial ATP or ERK signaling, the association of Hsps releases with signaling pathways of MAPKs, or the role of different ion channels in regulating various cell processes, require further investigation.
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Affiliation(s)
- Khadijeh Askaripour
- Department of Biomechatronics, Gdansk University of Technology, Gdansk, Poland
| | - Arkadiusz Żak
- Department of Biomechatronics, Gdansk University of Technology, Gdansk, Poland
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4
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Feng Y, Shi J, Li M, Duan H, Shao B. Evaluation of the cytotoxic activity of triphenyl phosphate on mouse spermatocytes cells. Toxicol In Vitro 2023; 90:105607. [PMID: 37149271 DOI: 10.1016/j.tiv.2023.105607] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 04/12/2023] [Accepted: 04/30/2023] [Indexed: 05/08/2023]
Abstract
Triphenyl phosphate (TPhP) is one of the most commonly found organophosphorus flame retardants (OPFRs) in the environment and the general population. Continuous daily exposure to TPhP may adversely impact male reproductive health. However, few researches were conducted to investigate the direct effects of TPhP on the progress of sperm growth and development. In this study, mouse spermatocyte GC-2spd (GC-2) cells were selected as an in vitro model, the impact of oxidative stress, mitochondrial impairment, DNA damage, cell apoptosis and the related molecular mechanisms were investigated using high content screening (HCS) system. Our study indicated that cell viability was decreased significantly in a dose-dependent manner after TPhP treatment with the half lethal concentration (LC50) at 105.8, 61.61 and 53.23 μM for 24, 48 and 72 h. A concentration-related apoptosis occurrence was observed in GC-2 cells after TPhP exposure for 48 h. In addition, the elevated intracellular reactive oxygen species (ROS) and the total antioxidant capacity (T-AOC) also observed after exposing to 6, 30 and 60 μM of TPhP. Furthermore, based on the enhancement of pH2AX protein and alteration of nuclear morphology or DNA content, DNA damage might be induced by higher concentration of TPhP treatment. Simultaneously, alteration of mitochondrial structure, enhancement of mitochondrial membrane potential (MMP), reduction of cellular adenosine triphosphate (ATP) content, altered expression of Bcl-2 family proteins, release of cytochrome c and increase of caspase-3 and caspase-9 activity demonstrated that caspase-3 dependent mitochondrial pathway might play a key role in the process of GC-2 cell apoptosis. Taken together, these results showed that TPhP was a mitochondrial toxicant and apoptotic inducer, which might trigger alike responses in human spermatogenic cells. Therefore, the potential reproductive toxicity of TPhP should not be ignored.
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Affiliation(s)
- Yixing Feng
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing 100013, China
| | - Jiachen Shi
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing 100013, China
| | - Ming Li
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing 100013, China
| | - Hejun Duan
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing 100013, China
| | - Bing Shao
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Control and Prevention, Beijing 100013, China.
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Lai H, Levitt BB. Cellular and molecular effects of non-ionizing electromagnetic fields. REVIEWS ON ENVIRONMENTAL HEALTH 2023; 0:reveh-2023-0023. [PMID: 37021652 DOI: 10.1515/reveh-2023-0023] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/20/2023] [Indexed: 06/19/2023]
Abstract
The way that living cells respond to non-ionizing electromagnetic fields (EMF), including static/extremely-low frequency and radiofrequency electromagnetic fields, fits the pattern of 'cellular stress response' - a mechanism manifest at the cellular level intended to preserve the entire organism. It is a set pattern of cellular and molecular responses to environmental stressors, such as heat, ionizing radiation, oxidation, etc. It is triggered by cellular macromolecular damage (in proteins, lipids, and DNA) with the goal of repairing and returning cell functions to homeostasis. The pattern is independent of the type of stressor encountered. It involves cell cycle arrest, induction of specific molecular mechanisms for repair, damage removal, cell proliferation, and cell death if damage is too great. This response could be triggered by EMF-induced alternation in oxidative processes in cells. The concept that biological response to EMF is a 'cellular stress response' explains many observed effects of EMF, such as nonlinear dose- and time-dependency, increased and decreased risks of cancer and neurodegenerative diseases, enhanced nerve regeneration, and bone healing. These responses could be either detrimental or beneficial to health, depending on the duration and intensity of the exposure, as well as specific aspects of the living organism being exposed. A corollary to electromagnetic hypersensitivity syndrome (EHS) could be an inappropriate response of the hippocampus/limbic system to EMF, involving glucocorticoids on the hypothalamic-pituitary-adrenal axis.
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Affiliation(s)
- Henry Lai
- Department of Bioengineering, University of Washington, Seattle, WA, USA
| | - B Blake Levitt
- National Association of Science Writers, Berkeley, CA CA 94707, USA
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Karbalay-Doust S, Darabyan M, Sisakht M, Haddadi G, Sotoudeh N, Haghani M, Mortazavi SMJ. Extremely Low Frequency-Electromagnetic Fields (ELF-EMF) Can Decrease Spermatocyte Count and Motility and Change Testicular Tissue. J Biomed Phys Eng 2023; 13:135-146. [PMID: 37082547 PMCID: PMC10111108 DOI: 10.31661/jbpe.v0i0.2011-1234] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/18/2021] [Indexed: 04/22/2023]
Abstract
Background Substantial evidence indicates that exposure to extremely low frequency-electromagnetic fields (ELF-EMFs) affects male reproductive system. Objective The goal of this study was to evaluate the effects of long-term irradiation with ELF-EMF on sperm quality and quantity and testicular structure. Material and Methods In this case-control study, sixty male Sprague-Dawley rats were randomly divided into six groups. Experimental groups were exposed to ELF-EMF (50 Hz EMF, 100 µT) for either 1 h/day for 52 days (Group 1), 4 h/day for 52 days (Group 3), 1 h/day for 5 days (Group 5), 4 h/day for 52 days (Group 7). Groups 2, 4, 6 and 8 were only sham exposed at durations equal to Groups 1, 3, 5 and 7, respectively. Results Both count and motility of sperms were significantly decreased in animals exposed to ELF-EMF (1 h/day for 52 days, 4 h/day for 52 day, and 4 h/day for 5 days) compared to the sham-exposed groups (P<0.05). Serum testosterone levels showed a significant decrease in the animals exposed to ELF-EMF (4 h/day for 5 days) compared to the control groups (P<0.05). A significant decrease was observed in the volume of the seminiferous tubules, seminiferous tubules epithelium and interstitial tissue in the animals exposed to ELF-EMF for 4 h/day for 5 days. Tubules length was also reduced by 18% in animals exposed to ELF-EMF (4 h/day for 5 days). Conclusion Our results show that ELF-EMF can reduce spermatocyte count and motility and is able to induce structural changes in testicular tissue.
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Affiliation(s)
- Saeid Karbalay-Doust
- Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Department of Anatomy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Darabyan
- Department of Radiology, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohsen Sisakht
- Department of Medical Biochemistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Gholamhassan Haddadi
- Department of Radiology, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Narges Sotoudeh
- Department of Anatomy and Histomorphometry and Stereology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Masoud Haghani
- Department of Radiology, Faculty of Paramedical Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
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7
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Xie W, Yang J, Zhou N, Ding H, Zhou G, Wu S, Guo S, Li W, Zhang L, Yang H, Mao C, Zheng Y. Identification of microRNA editing sites in three subtypes of leukemia. Front Mol Biosci 2022; 9:1014288. [PMID: 36452459 PMCID: PMC9702332 DOI: 10.3389/fmolb.2022.1014288] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 10/28/2022] [Indexed: 09/15/2023] Open
Abstract
Leukemia is an aberrant hyper-proliferation of immature blood cells that do not form solid tumors. The transcriptomes of microRNAs (miRNAs) of leukemia have been intensively explored. However, miRNA editing of leukemia has not been extensively studied. To identify miRNA editing patterns and explore their functional relevance in leukemia, we analyzed 200 small RNA sequencing profiles of three subtypes of leukemia and identified hundreds of miRNA editing sites in three subtypes of leukemia. Then, we compared the editing levels of identified miRNA editing sites in leukemia and normal controls. Many miRNAs were differential edited in different subtypes of leukemia. We also found the editing levels of 3'-A editing sites of hsa-mir-21-5p and hsa-mir-155-5p decreased in chronic lymphocytic leukemia patients with radiation treatments. By integrating PAR-CLIP sequencing profiles, we predicted the targets of original and edited miRNAs. One of the edited miRNA, hsa-let-7b_5c, with an additional cytosine at 5' end of hsa-let-7b-5p, potentially targeted VBP1 and CTDSP1. CTDSP1 was significantly downregulated in T-ALL compared to normal controls, which might be originated from the hyperediting of hsa-let-7b-5p in T-ALL. Our study provides a comprehensive view of miRNA editing in three different subtypes of leukemia.
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Affiliation(s)
- Wenping Xie
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Jun Yang
- Yunnan Police College, Kunming, Yunnan, China
| | - Nan Zhou
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Hao Ding
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Guangchen Zhou
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Shuai Wu
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Shiyong Guo
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Wanran Li
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Lei Zhang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Huaide Yang
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Chunyi Mao
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
| | - Yun Zheng
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan, China
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan, China
- Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming, Yunnan, China
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, Yunnan, China
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Fan M, Arai M, Tawada A, Chiba T, Fukushima R, Uzawa K, Shiiba M, Kato N, Tanzawa H, Takiguchi Y. Contrasting functions of the epithelial‑stromal interaction 1 gene, in human oral and lung squamous cell cancers. Oncol Rep 2021; 47:5. [PMID: 34738627 PMCID: PMC8600417 DOI: 10.3892/or.2021.8216] [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: 09/17/2020] [Accepted: 12/23/2020] [Indexed: 12/17/2022] Open
Abstract
The epithelial‑stromal interaction 1 gene (EPSTI1) is known to play multiple roles in the malignant progression of breast cancer and also in some aspects of the immune responses to the tumor. However, the relevance of the gene in the onset/progression of oral squamous cell carcinoma (OSCC) and lung squamous cell carcinoma (LSCC) is not yet known. The present study was aimed at revealing the roles of EPSTI1 in conferring malignant characteristics to OSCC and LSCC, and the underlying mechanisms. Quantitative real‑time polymerase chain reaction (PCR) and western blot analyses demonstrated significant upregulation of EPSTI1 in all four OSCC cell lines (HSC2, HSC3, HSC3‑M3 and HSC4), and significant downregulation of EPST11 in all three LSCC cell lines (LK‑2, EBC‑1 and H226) used in the present study, as compared to the expression levels in the corresponding control cell lines. Both knockdown of EPST11 in OSCC and overexpression of the gene in LSCC suppressed cell proliferation, and induced cell‑cycle arrest in the G1 phase, with upregulation of p21 and downregulation of CDK2 and cyclin D1. Furthermore, these alterations of EPST11 gene expression in the OSCC and LSCC cell lines suppressed the cell migration ability and reversed the EMT phenotype of the tumor cells. Collectively, while EPSTI1 appears to have oncogenic roles in OSCC, it appears to exert tumor‑suppressive roles in LSCC. PCR array analyses revealed some genes whose expression levels were altered along with the modified EPSTI1 expression in both the OSCC and LSCC cell lines. These findings suggest that EPSTI1 may be a therapeutic target for both OSCC and LSCC.
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Affiliation(s)
- Mengmeng Fan
- Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Makoto Arai
- Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Akinobu Tawada
- Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Tetsuhiro Chiba
- Department of Gastroenterology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Reo Fukushima
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Katsuhiro Uzawa
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Masashi Shiiba
- Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Naoya Kato
- Department of Gastroenterology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Hideki Tanzawa
- Department of Oral Science, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
| | - Yuichi Takiguchi
- Department of Medical Oncology, Graduate School of Medicine, Chiba University, Chiba 260‑8670, Japan
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DNMT1 and miRNAs: possible epigenetics footprints in electromagnetic fields utilization in oncology. Med Oncol 2021; 38:125. [PMID: 34495398 DOI: 10.1007/s12032-021-01574-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 09/01/2021] [Indexed: 10/20/2022]
Abstract
Many studies were performed to unravel the effects of different types of Electromagnetic fields (EMFs) on biological systems. Some studies were conducted to exploit EMFs for medical purposes mainly in cancer therapy. Although many studies suggest that the EMFs exposures can be effective in pre-clinical cancer issues, the treatment outcomes of these exposures on the cancer cells, especially at the molecular level, are challenging and overwhelmingly complicated yet. This article aims to review the epigenetic mechanisms that can be altered by EMFs exposures with the main emphasis on Extremely low frequency electromagnetic field (ELF-EMF). The epigenetic mechanisms are reversible and affected by environmental factors, thus, EMFs exposures can modulate these mechanisms. According to the reports, ELF-EMF exposures affect epigenetic machinery directly or through the molecular signaling pathways. ELF-EMF in association with DNA methylation, histone modification, miRNAs, and nucleosome remodeling could affect the homeostasis of cancer cells and play a role in DNA damage repairing, apoptosis induction, prevention of metastasis, differentiation, and cell cycle regulation. In general, the result of this study shows that ELF-EMF exposure probably can be effective in cancer epigenetic therapy, but more molecular and clinical investigations are needed to clarify the safe and specific dosimetric characteristics of ELF-EMF in practice.
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10
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Yi L, Liu Y, Xu A, Li S, Zhang H, Peng M, Li Z, Ren H, Dai J, Luo C, Xiao Y, Zhou X, Long Y. MicroRNA-26b-5p suppresses the proliferation of tongue squamous cell carcinoma via targeting proline rich 11 (PRR11). Bioengineered 2021; 12:5830-5838. [PMID: 34488538 PMCID: PMC8806564 DOI: 10.1080/21655979.2021.1969832] [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] [Indexed: 01/22/2023] Open
Abstract
MicroRNAs (miRNAs) have been proved to be involved in many biological processes during tumorigenesis and progression, including cell proliferation and cell cycle progression. However, the potential role of miR-26b-5p in tongue squamous cell carcinoma (TSCC) remains unclear. In the present study, we demonstrated that miR-26b-5p was decreased in TSCC tissues in both TCGA-TSCC subset and eight paired samples from TSCC patients, while Proline Rich 11 (PRR11) was obviously increased. Transfection of miR-26b-5p mimics inhibited CALL7 cell proliferation by arresting the cells at the S/G2 transition. Meanwhile, miR-26b-5p inhibitor had the opposite biological functions. The results of luciferase activity and RNA-pulldown assays indicated that miR-26b-5p directly targeted the PRR11 3' -untranslated region in CAL27 cells. Furthermore, the effects of miR-26b-5p on cell cycle regulation were reversed after treatment with siRNA against PRR11. In summary, our findings indicate that miR-26b-5p induce cell cycle arrest in TSCC by targeting PRR11. Hence, targeting miR-26b-5p could be a promising therapeutic strategy for the treatment of TSCC.
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Affiliation(s)
- Liang Yi
- Translational Medicine Centre.,Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Ying Liu
- Hunan Traditional Chinese Medical College, Zhuzhou, Hunan, P. R. China
| | - Anji Xu
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Sha Li
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Hailin Zhang
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Mingjing Peng
- Translational Medicine Centre.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Zan Li
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | | | - Jie Dai
- Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Chenhui Luo
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Yazhou Xiao
- Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Xiao Zhou
- Translational Medicine Centre.,Department of Head & Neck Surgery.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
| | - Ying Long
- Translational Medicine Centre.,Hunan Provincial Clinical Research Centre for Oncoplastic Surgery, Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, P. R. China
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11
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Epigenetic dysregulation in various types of cells exposed to extremely low-frequency magnetic fields. Cell Tissue Res 2021; 386:1-15. [PMID: 34287715 PMCID: PMC8526474 DOI: 10.1007/s00441-021-03489-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 06/18/2021] [Indexed: 02/07/2023]
Abstract
Epigenetic mechanisms regulate gene expression, without changing the DNA sequence, and establish cell-type-specific temporal and spatial expression patterns. Alterations of epigenetic marks have been observed in several pathological conditions, including cancer and neurological disorders. Emerging evidence indicates that a variety of environmental factors may cause epigenetic alterations and eventually influence disease risks. Humans are increasingly exposed to extremely low-frequency magnetic fields (ELF-MFs), which in 2002 were classified as possible carcinogens by the International Agency for Research on Cancer. This review summarizes the current knowledge of the link between the exposure to ELF-MFs and epigenetic alterations in various cell types. In spite of the limited number of publications, available evidence indicates that ELF-MF exposure can be associated with epigenetic changes, including DNA methylation, modifications of histones and microRNA expression. Further research is needed to investigate the molecular mechanisms underlying the observed phenomena.
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12
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Sex bias miRNAs in Cynoglossus semilaevis could play a role in transgenerational inheritance. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 2021; 39:100853. [PMID: 33992844 DOI: 10.1016/j.cbd.2021.100853] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 04/06/2021] [Accepted: 05/06/2021] [Indexed: 11/21/2022]
Abstract
Alterations of non-coding RNA profiling in spermatozoa are candidate mechanisms related to changes in paternal environment and progeny. Transgenerational inheritance of sex in pseudomales of Cynoglossus semilaevis, a fish with significant sex dimorphism, is a typical example of non-Mendelian inheritance. In the present study, miRNA profiles of spermatozoa were compared between male and pseudomale of C. semilaevis. Differential miRNAs in sperm from F0 and F1 generation also provides clues for revealing the possible role of non-coding RNA mediated transgenerational inheritance. Four sexual bias miRNAs, dre-miR-26a-5p, dre-miR-27b-3p, dre-miR-125b-5p,pol-199a-5p, were identified and verified in F0 and F1 generation of C. semilaevis. All of them were highly expressed in male sperm compared with pseudomale sperm. Function of target genes indicates that target genes of these differential RNAs are highly correlated with sex differentiation, gametogenesis and maintenance of secondary sexual characteristics. In a word, identification of epigenetic markers in gametes has great prospects in predicting susceptibility and properties in offsprings, and providing an indicator of parentalgenetic property.
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13
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Analyzing the impact of 900 MHz EMF short-term exposure to the expression of 667 miRNAs in human peripheral blood cells. Sci Rep 2021; 11:4444. [PMID: 33627699 PMCID: PMC7904780 DOI: 10.1038/s41598-021-82278-1] [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: 07/11/2020] [Accepted: 12/28/2020] [Indexed: 11/08/2022] Open
Abstract
More than ever before, people around the world are frequently exposed to different sections of the electromagnetic spectrum, mainly emitted from wireless modern communication technologies. Especially, the level of knowledge on non-thermal biological EMF effects remains controversial. New technologies allow for a more detailed detection of non-coding RNAs which affect the post-transcriptional control. Such method shall be applied in this work to investigate the response of human blood cells to electromagnetic irradiation. In this ex vivo in vitro study, we exposed peripheral blood cells from 5 male donors to a continuous wave of 900 MHz EMF for 0, 30, 60 and 90 min. Significant micro RNA (miRNA) expression changes (p ≤ 0.05) above or below the SHAM exposed samples were evaluated using a quantitative real time PCR platform for simultaneous detection of 667 miRNAs called low density array. Only significant miRNA expression changes which were detectable in at least 60% of the samples per exposure group were analyzed. The results were compared with data from room temperature + 2 °C (RT + 2 °C) samples (here referred to as hyperthermia) to exclude miRNA expression altered by hyperthermia. The validation study by using the same donors and study design was performed after an interval of 2 years. When analyzing a total of 667 miRNAs during the screening study, 2 promising candidate miRNAs were identified, which were down regulated almost twice and showed a complete separation from the unexposed control group (miR-194 at 30 min and miR-939 at 60 min). The p-values even survived the Bonferroni correction for multiple comparisons (p = 0.0007 and p = 0.004, respectively). None of these miRNAs were expressed at a second time point after EMF exposure. Following an alternative analysis approach, we examined for miRNAs revealing an expected significant association of differential miRNA expression with the dose-time EMF exposure product, separately for each donor. Donors 2 and 3 revealed 11 and 10 miRNA species being significantly associated with EMF exposure which differed significantly from the other donors showing a minor number of differentially expressed miRNAs and could identify donors 2 and 3 as particularly EMF-responsive. The measurements were repeated after 2 years. The number of expressed/non-expressed miRNAs was almost similar (97.4%), but neither the number nor the previously differentially expressed miRNAs could be reproduced. Our data neither support evidence of early changes at miRNA expression level in human whole blood cells after 900 MHz EMF exposure nor the identification of EMF-responsive individuals.
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Siasi E, Moniri E. The effect of extremely low frequency electromagnetic fields following on upregulation of miR-21 and miR-29 in gastric cancer cell line. GASTROENTEROLOGY AND HEPATOLOGY FROM BED TO BENCH 2021; 14:67-76. [PMID: 33868612 PMCID: PMC8035540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Accepted: 12/22/2020] [Indexed: 11/03/2022]
Abstract
AIM Extremely low frequency electromagnetic fields affect miRNAs expression in cancer cell. In this study, electromagnetic fields exposed to low frequency were used to compare miR-21 and miR-29 expressions in a gastric cancer cell line. BACKGROUND It has been recently suggested that the low frequency electromagnetic fields probably function as a treatment for cancers. METHODS A cultured cell line of gastric cancer was exposed to an electromagnetic radiation system. The cell line was assigned to 4 groups under continuous and discontinuous radiations of 0.25 and 2.5 ml Tesla field strength. Then, the groups were compared with a non-radiation control group. Later, RNA extraction and cDNA synthesis were prepared for miR-21 and miR-29. Real Time PCR method was used to determine how expressions of these two microRNAs differ. Finally, the results were statistically analyzed. RESULTS The percentage of cell viability in the electromagnetic field radiation experienced a significant decrease compared to that of the control group. In addition, expression of miRNA-21 and miRNA-29 had a significant increase as the strength of the electromagnetic field radiations was on an upward trend. Similarly, the percentage of cell viability saw a significant decline in the upregulation of miRNA-21 and miRNA-29 regardless of radiation types. CONCLUSION Findings of this study showed the therapeutic effect of low frequency electromagnetic fields on the gastric cancer cell line. They also indicated that novel biomarkers (miRNA-21 and miRNA-29) could be proposed as potential treatments of gastric cancer, but the results are required to be well established by future studies.
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Affiliation(s)
- Elham Siasi
- Department of Genetic, Collage of Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Elaheh Moniri
- Department of Genetic, Collage of Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran
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15
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Vaze A, Tran KV, Tanriverdi K, Sardana M, Lessard D, Donahue JK, Barton B, Aurigemma G, Lubitz SA, Lin H, Nasr GH, Mandapati A, Benjamin EJ, Vasan RS, Freedman JE, McManus DD. Relations between plasma microRNAs, echocardiographic markers of atrial remodeling, and atrial fibrillation: Data from the Framingham Offspring study. PLoS One 2020; 15:e0236960. [PMID: 32813736 PMCID: PMC7437902 DOI: 10.1371/journal.pone.0236960] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2020] [Accepted: 07/16/2020] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Circulating microRNAs may reflect or influence pathological cardiac remodeling and contribute to atrial fibrillation (AF). OBJECTIVE The purpose of this study was to identify candidate plasma microRNAs that are associated with echocardiographic phenotypes of atrial remodeling, and incident and prevalent AF in a community-based cohort. METHODS We analyzed left atrial function index (LAFI) of 1788 Framingham Offspring 8 participants. We quantified expression of 339 plasma microRNAs. We examined associations between microRNA levels with LAFI and prevalent and incident AF. We constructed pathway analysis of microRNAs' predicted gene targets to identify molecular processes involved in adverse atrial remodeling in AF. RESULTS The mean age of the participants was 66 ± 9 years, and 54% were women. Five percent of participants had prevalent AF at the initial examination and 9% (n = 157) developed AF over a median 8.6 years of follow-up (IQR 8.1-9.2 years). Plasma microRNAs were associated with LAFI (N = 73, p<0.0001). Six of these plasma microRNAs were significantly associated with incident AF, including 4 also associated with prevalent AF (microRNAs 106b, 26a-5p, 484, 20a-5p). These microRNAs are predicted to regulate genes involved in cardiac hypertrophy, inflammation, and myocardial fibrosis. CONCLUSIONS Circulating microRNAs 106b, 26a-5p, 484, 20a-5p are associated with atrial remodeling and AF.
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Affiliation(s)
- Aditya Vaze
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Khanh-Van Tran
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Kahraman Tanriverdi
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Mayank Sardana
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Darleen Lessard
- Division of Epidemiology of Chronic Diseases, Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - J. Kevin Donahue
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Bruce Barton
- Biostatistics and Health Services Research, Department of Quantitative Health Sciences, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Gerard Aurigemma
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Steven A. Lubitz
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Honghuang Lin
- National Heart Lung and Blood Institute's and Boston University's Framingham Heart Study, Framingham, Massachusetts; Computational Biomedicine Section, Department of Medicine, Boston University School of Medicine, Boston, Massachusetts, United States of America
| | - George H. Nasr
- Department of Medicine, University of California Irvine, Orange, California, United States of America
| | - Amiya Mandapati
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - Emelia J. Benjamin
- Department of Medicine, and Department of Epidemiology, Boston University's and National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, Massachusetts; Section of Preventive Medicine and Epidemiology and Cardiovascular Medicine, Boston University Schools of Medicine and Public Health, Boston, Massachusetts, United States of America
| | - Ramachandran S. Vasan
- Department of Medicine, and Department of Epidemiology, Boston University's and National Heart, Lung, and Blood Institute's Framingham Heart Study, Framingham, Massachusetts; Section of Preventive Medicine and Epidemiology and Cardiovascular Medicine, Boston University Schools of Medicine and Public Health, Boston, Massachusetts, United States of America
| | - Jane E. Freedman
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
| | - David D. McManus
- Division of Cardiology, Department of Medicine, University of Massachusetts Medical School, Worcester, Massachusetts, United States of America
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16
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Naghibzadeh M, Gholampour S, Naghibzadeh M, Sadeghian-Nodoushan F, Nikukar H. The effect of electromagnetic field on decreasing and increasing of the growth and proliferation rate of dermal fibroblast cell. Dermatol Ther 2020; 33:e13803. [PMID: 32526050 DOI: 10.1111/dth.13803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2020] [Revised: 04/06/2020] [Accepted: 06/06/2020] [Indexed: 11/29/2022]
Abstract
Maintaining the health of dermal fibroblast cells and controlling their growth and proliferation would directly affect the health of skin tissues. The present study encompassed three control and three experimental specimens, which were different in terms of the duration of exposure to electromagnetic field (EMF) and intensity. With a decrease in intensity from 2 to 1 mT during 24, 48, and 72 h after exposing the cells to EMF, the frequency of the sample fibroblast cells increased by 60.3%, 144.9%, and 90.1%, respectively. With an increase in intensity from 3 to 4 mT during 48 and 72 h of exposure to EMF, the frequencies of the sample fibroblast cells decreased by 6.8% and 86.7%, respectively. It seems to be possible to achieve the most desirable condition to help the restoration of wounds and skin lesions through decreasing the exposure intensity from 2 to 0.5 mT and increasing EMF exposure time from 24 to 72 h simultaneously and non-invasively. The most desirable approach to improve the treatment of skin cancers non-invasively is to increase the intensity from 3 to 5 mT and to enhance EMF exposure time from 48 to 72 h.
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Affiliation(s)
- Mehran Naghibzadeh
- Department of Biomedical Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Seifollah Gholampour
- Department of Biomedical Engineering, North Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Majid Naghibzadeh
- Medical Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Fatemeh Sadeghian-Nodoushan
- Medical Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Tissue engineering and Applied Cell Sciences, School of Advanced Technologies in Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Habib Nikukar
- Medical Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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17
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Rallabandi HR, Ganesan P, Kim YJ. Targeting the C-Terminal Domain Small Phosphatase 1. Life (Basel) 2020; 10:life10050057. [PMID: 32397221 PMCID: PMC7281111 DOI: 10.3390/life10050057] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/15/2022] Open
Abstract
The human C-terminal domain small phosphatase 1 (CTDSP1/SCP1) is a protein phosphatase with a conserved catalytic site of DXDXT/V. CTDSP1’s major activity has been identified as dephosphorylation of the 5th Ser residue of the tandem heptad repeat of the RNA polymerase II C-terminal domain (RNAP II CTD). It is also implicated in various pivotal biological activities, such as acting as a driving factor in repressor element 1 (RE-1)-silencing transcription factor (REST) complex, which silences the neuronal genes in non-neuronal cells, G1/S phase transition, and osteoblast differentiation. Recent findings have denoted that negative regulation of CTDSP1 results in suppression of cancer invasion in neuroglioma cells. Several researchers have focused on the development of regulating materials of CTDSP1, due to the significant roles it has in various biological activities. In this review, we focused on this emerging target and explored the biological significance, challenges, and opportunities in targeting CTDSP1 from a drug designing perspective.
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18
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Bagheri Hosseinabadi M, Khanjani N, Mirzaii M, Norouzi P, Atashi A. DNA damage from long-term occupational exposure to extremely low frequency electromagnetic fields among power plant workers. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2019; 846:403079. [DOI: 10.1016/j.mrgentox.2019.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Revised: 07/26/2019] [Accepted: 07/26/2019] [Indexed: 11/24/2022]
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19
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Han J, Shao J, Chen Q, Sun H, Guan L, Li Y, Liu J, Liu H. Transcriptional changes in the hypothalamus, pituitary, and mammary gland underlying decreased lactation performance in mice under heat stress. FASEB J 2019; 33:12588-12601. [PMID: 31480864 DOI: 10.1096/fj.201901045r] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Because of climate change, heat stress (HS) causes more and more impacts on dairy animals to decrease lactation performance. The neuroendocrine system is key in regulating systemic physiological processes and milk synthesis. However, the hypothalamic-pituitary axis response to HS is still unclear. In this study, a group of lactating mice underwent a daily 2-h heat treatment (36°C) for 14 d to explore possible cross-talk between the hypothalamic-pituitary axis and mammary gland under HS. Transcriptome analyses by multitissue RNA-Seq indicated the possible mechanisms of reduced lactation performance in animals under HS. In the hypothalamus, the cAMP signaling pathway was activated to resist neuronal death, and the expression of downstream genes was increased to promote cell survival under HS. Reduced food intake might be caused by down-regulated appetite-related peptide, whereas up-regulated neuropeptide Y acted to attenuate reduced food intake. In pituitary, energy stress from lower food intake might result in reduced secretion of prolactin and growth hormone. Under HS, the mammary gland may undergo hypoxic stress, causing mammary epithelial cell apoptosis. Together, these data showed systemic changes in tissues to accommodate the effects of HS on lactation.-Han, J., Shao, J., Chen, Q., Sun, H., Guan, L., Li, Y., Liu, J., Liu, H. Transcriptional changes in the hypothalamus, pituitary, and mammary gland underlying decreased lactation performance in mice under heat stress.
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Affiliation(s)
- Jialiang Han
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and
| | - Juanjuan Shao
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and
| | - Qiong Chen
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and
| | - Huizeng Sun
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and.,Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Leluo Guan
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and.,Department of Agricultural, Food, and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Yongxin Li
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and
| | - Jianxin Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and
| | - Hongyun Liu
- College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, China; and
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20
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Electromagnetic Fields, Genomic Instability and Cancer: A Systems Biological View. Genes (Basel) 2019; 10:genes10060479. [PMID: 31242701 PMCID: PMC6627294 DOI: 10.3390/genes10060479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 06/19/2019] [Accepted: 06/22/2019] [Indexed: 12/12/2022] Open
Abstract
This review discusses the use of systems biology in understanding the biological effects of electromagnetic fields, with particular focus on induction of genomic instability and cancer. We introduce basic concepts of the dynamical systems theory such as the state space and attractors and the use of these concepts in understanding the behavior of complex biological systems. We then discuss genomic instability in the framework of the dynamical systems theory, and describe the hypothesis that environmentally induced genomic instability corresponds to abnormal attractor states; large enough environmental perturbations can force the biological system to leave normal evolutionarily optimized attractors (corresponding to normal cell phenotypes) and migrate to less stable variant attractors. We discuss experimental approaches that can be coupled with theoretical systems biology such as testable predictions, derived from the theory and experimental methods, that can be used for measuring the state of the complex biological system. We also review potentially informative studies and make recommendations for further studies.
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21
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Juutilainen J, Herrala M, Luukkonen J, Naarala J, Hore PJ. Magnetocarcinogenesis: is there a mechanism for carcinogenic effects of weak magnetic fields? Proc Biol Sci 2019; 285:rspb.2018.0590. [PMID: 29794049 DOI: 10.1098/rspb.2018.0590] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Accepted: 04/27/2018] [Indexed: 12/13/2022] Open
Abstract
Extremely low-frequency (ELF) magnetic fields have been classified as possibly carcinogenic, mainly based on rather consistent epidemiological findings suggesting a link between childhood leukaemia and 50-60 Hz magnetic fields from power lines. However, causality is not the only possible explanation for the epidemiological associations, as animal and in vitro experiments have provided only limited support for carcinogenic effects of ELF magnetic fields. Importantly, there is no generally accepted biophysical mechanism that could explain such effects. In this review, we discuss the possibility that carcinogenic effects are based on the radical pair mechanism (RPM), which seems to be involved in magnetoreception in birds and certain other animals, allowing navigation in the geomagnetic field. We review the current understanding of the RPM in magnetoreception, and discuss cryptochromes as the putative magnetosensitive molecules and their possible links to cancer-relevant biological processes. We then propose a hypothesis for explaining the link between ELF fields and childhood leukaemia, discuss the strengths and weaknesses of the current evidence, and make proposals for further research.
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Affiliation(s)
- Jukka Juutilainen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Mikko Herrala
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jukka Luukkonen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - Jonne Naarala
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio, Finland
| | - P J Hore
- Department of Chemistry, University of Oxford, Oxford, UK
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22
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Kim YM, Lim HM, Ro HS, Ki GE, Seo YK. Pulsed Electromagnetic Fields Increase Pigmentation through the p-ERK/p-p38 Pathway in Zebrafish ( Danio rerio). Int J Mol Sci 2018; 19:E3211. [PMID: 30336610 PMCID: PMC6214121 DOI: 10.3390/ijms19103211] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 10/15/2018] [Accepted: 10/15/2018] [Indexed: 12/16/2022] Open
Abstract
Melanogenesis is a biological process resulting in the production of melanin pigment, which plays an important role in the prevention of sun-induced skin injury, and determines hair and skin color. So, a wide variety of approaches have been proposed to increase the synthesis of melanin. This study evaluated the effects of pulsed electromagnetic fields (PEMFs) on the pigmentation of zebrafish (Danio rerio) in vivo. We stimulated pigmentation in zebrafish by using specific frequencies and intensities of PEMFs. This study focuses on pigmentation using PEMFs, and finds that PEMFs, at an optimal intensity and frequency, upregulate pigmentation by the stimulated expression of tyrosinase-related protein 1 (TRP1), dopachrome tautomerase (DCT) through extracellular signal-regulated kinase(ERK) phosphorylation, and p38 phosphorylation signaling pathways in zebrafish. These results suggest that PEMFs, at an optimal intensity and frequency, are a useful tool in treating gray hair, with reduced melanin synthesis in the hair shaft or hypopigmentation-related skin disorders.
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Affiliation(s)
- Yu-Mi Kim
- Department of Medical Biotechnology (BK21 Plus Team), Dongguk University, Goyang-si 10326, Korea.
| | - Han-Moi Lim
- Department of Medical Biotechnology (BK21 Plus Team), Dongguk University, Goyang-si 10326, Korea.
| | | | - Ga-Eun Ki
- Department of Medical Biotechnology (BK21 Plus Team), Dongguk University, Goyang-si 10326, Korea.
| | - Young-Kwon Seo
- Department of Medical Biotechnology (BK21 Plus Team), Dongguk University, Goyang-si 10326, Korea.
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23
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Li H, Lin L, Li L, Zhou L, Zhang Y, Hao S, Ding Z. Exosomal small RNA sequencing uncovers the microRNA dose markers for power frequency electromagnetic field exposure. Biomarkers 2018; 23:315-327. [PMID: 29297241 DOI: 10.1080/1354750x.2018.1423707] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
PURPOSE The potential health risks caused by power frequency electromagnetic field (PFEMF) have led to increase public health concerns. However, the diagnosis and prognosis remain challenging in determination of exact dose of PFEMF exposure. MATERIALS AND METHODS Mice were exposed to different magnetic doses of PFEMF for the following isolation of serum exosomes, microRNAs (miRNAs) extraction and small RNA sequencing. After small RNA sequencing, bioinformatic analysis, quantitative real-time PCR (qRT-PCR) validation and serum exosomal miRNA biomarkers were determined. RESULTS Significantly changed serum exosomal miRNA as biomarkers of 0.1, 0.5, 2.5 mT and common PFEMF exposure were confirmed. Gene ontology (GO) and Kyoto encyclopaedia of genes and genomes (KEGG) pathway analysis of the downstream target genes of the above-identified exosomal miRNA markers indicated that, exosomal miRNA markers were predicted to be involved in critical pathophysiological processes of neural system and cancer- or other disease-related signalling pathways. CONCLUSIONS Aberrantly-expressed serum exosomal miRNAs, including miR-128-3p for 0.1 mT, miR-133a-3p for 0.5 mT, miR-142a-5p for 2.5 mT, miR-218-5p and miR-199a-3p for common PFEMF exposure, suggested a series of informative markers for not only identifying the exact dose of PFEMF exposure, also consolidating the base for future clinical intervention.
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Affiliation(s)
- Hualiang Li
- a Electric Power Research Institute of Guangdong Power Grid , Guangzhou , PR China
| | - Lin Lin
- b Department of Obstetrics , The Sixth Affiliated Hospital of Sun Yat-sen University , Guangzhou , PR China
| | - Li Li
- a Electric Power Research Institute of Guangdong Power Grid , Guangzhou , PR China
| | - Liang Zhou
- c Department of Radiation Medicine, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research , Southern Medical University , Guangzhou , PR China
| | - Ying Zhang
- c Department of Radiation Medicine, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research , Southern Medical University , Guangzhou , PR China
| | - Shuai Hao
- c Department of Radiation Medicine, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research , Southern Medical University , Guangzhou , PR China
| | - Zhenhua Ding
- c Department of Radiation Medicine, School of Public Health, Guangdong Provincial Key Laboratory of Tropical Disease Research , Southern Medical University , Guangzhou , PR China
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Hu P, Guan K, Feng Y, Ma C, Song H, Li Y, Xia X, Li J, Li F. miR-638 Inhibits immature Sertoli cell growth by indirectly inactivating PI3K/AKT pathway via SPAG1 gene. Cell Cycle 2017; 16:2290-2300. [PMID: 29119857 DOI: 10.1080/15384101.2017.1380130] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Numerous studies have demonstrated that microRNAs (miRNAs) play important roles in cell growth, apoptosis and spermatogenesis. Our previous study showed that miR-638 was differentially expressed in sexually immature and mature testes of Large White boars. Here we reported that sperm-associated antigen 1 (SPAG1) was a direct target gene of miR-638. Moreover, miR-638 inhibited cell proliferation and cell cycle, and promoted apoptosis of porcine immature Sertoli cells. Key genes including phosphorylated phosphatidylinositide 3-kinases (p-PI3K) and phosphorylated serine/ threonine kinase (p-AKT) in PI3K/AKT pathway as well as cell cycle factors including c-MYC, cyclin-D1 (CCND1), cyclin-E1 (CCNE1) and cyclin-dependent kinase 4 (CDK4) were all significantly down-regulated after overexpression of miR-638 or RNAi of SPAG1. Notably, mRNA levels of SRY-related HMG-box 2 (SOX2) and POU domain, class 5, transcription factor 1 (POU5F1) essential for spermatogonia proliferation were significantly suppressed in SPAG1 siRNA- transfected ST cells. This study suggests that miR-638 regulates immature Sertoli cell growth and apoptosis by targeting SPAG1 gene which can indirectly inactivate PI3K/AKT pathway, and plays roles in pig spermatogenesis.
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Affiliation(s)
- Pandi Hu
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Kaifeng Guan
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Yue Feng
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Changping Ma
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Huibin Song
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Yang Li
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Xuanyan Xia
- b College of Informatics, Huazhong Agricultural University , Wuhan , PR China
| | - Jialian Li
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China
| | - Fenge Li
- a Key Laboratory of Pig Genetics and Breeding of Ministry of Agriculture & Key Laboratory of Agricultural Animal Genetics, Breeding and Reproduction of Ministry of Education , Huazhong Agricultural University , Wuhan , PR China.,c The Cooperative Innovation Center for Sustainable Pig Production , Wuhan , PR China
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25
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Consales C, Cirotti C, Filomeni G, Panatta M, Butera A, Merla C, Lopresto V, Pinto R, Marino C, Benassi B. Fifty-Hertz Magnetic Field Affects the Epigenetic Modulation of the miR-34b/c in Neuronal Cells. Mol Neurobiol 2017; 55:5698-5714. [PMID: 29039021 DOI: 10.1007/s12035-017-0791-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 09/26/2017] [Indexed: 12/24/2022]
Abstract
The exposure to extremely low-frequency magnetic fields (ELF-MFs) has been associated to increased risk of neurodegenerative diseases, although the underlying molecular mechanisms are still undefined. Since epigenetic modulation has been recently encountered among the key events leading to neuronal degeneration, we here aimed at assessing if the control of gene expression mediated by miRNAs, namely miRs-34, has any roles in driving neuronal cell response to 50-Hz (1 mT) magnetic field in vitro. We demonstrate that ELF-MFs drive an early reduction of the expression level of miR-34b and miR-34c in SH-SY5Y human neuroblastoma cells, as well as in mouse primary cortical neurons, by affecting the transcription of the common pri-miR-34. This modulation is not p53 dependent, but attributable to the hyper-methylation of the CpG island mapping within the miR-34b/c promoter. Incubation with N-acetyl-l-cysteine or glutathione ethyl-ester fails to restore miR-34b/c expression, suggesting that miRs-34 are not responsive to ELF-MF-induced oxidative stress. By contrast, we show that miRs-34 control reactive oxygen species production and affect mitochondrial oxidative stress triggered by ELF-MFs, likely by modulating mitochondria-related miR-34 targets identified by in silico analysis. We finally demonstrate that ELF-MFs alter the expression of the α-synuclein, which is specifically stimulated upon ELF-MFs exposure via both direct miR-34 targeting and oxidative stress. Altogether, our data highlight the potential of the ELF-MFs to tune redox homeostasis and epigenetic control of gene expression in vitro and shed light on the possible mechanism(s) producing detrimental effects and predisposing neurons to degeneration.
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Affiliation(s)
- Claudia Consales
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy.
| | - Claudia Cirotti
- Department of Biology, University of Rome Tor Vergata, 00133, Rome, Italy
| | - Giuseppe Filomeni
- Department of Biology, University of Rome Tor Vergata, 00133, Rome, Italy.,Cell Stress and Survival Unit, Center for Autophagy, Recycling and Disease (CARD), Danish Cancer Society Research Center, 2100, Copenhagen, Denmark
| | - Martina Panatta
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy
| | - Alessio Butera
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy
| | - Caterina Merla
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy.,Vectorology and Anticancer Therapies, UMR 8203, CNRS, Gustave Roussy, Univ. Paris-Sud, Université Paris-Saclay, 94805, Villejuif, France
| | - Vanni Lopresto
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy
| | - Rosanna Pinto
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy
| | - Carmela Marino
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy
| | - Barbara Benassi
- Division of Health Protection Technologies, ENEA-Italian National Agency for New Technologies, Energy and Sustainable Economic Development, ENEA-Casaccia, Via Anguillarese 301, 00123, Rome, Italy.
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26
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LF-MF inhibits iron metabolism and suppresses lung cancer through activation of P53-miR-34a-E2F1/E2F3 pathway. Sci Rep 2017; 7:749. [PMID: 28389657 PMCID: PMC5429732 DOI: 10.1038/s41598-017-00913-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/16/2017] [Indexed: 12/15/2022] Open
Abstract
Our previous studies showed that low frequency magnetic fields (LF-MF) suppressed tumor growth and influenced the function of immune system. Nevertheless the mechanisms behind the effect of LF-MF still remain to be elucidated. In this study, Tumor- bearing mice subcutaneously inoculated with Lewis lung cancer cells were exposed to a LF-MF (0.4T, 7.5 Hz) for 35 days and Survival rate, tumor growth and the tumor markers were measured. Results showed that tumor growth was obviously inhibited with a prolonged survival of tumor- bearing mice by LF-MF exposure. In vitro experiments, LF-MF was found to induce cell growth arrest, cell senescence and inhibit iron metabolism of lung cancer cells. Moreover, LF-MF stabilized p53 protein via inhibiting cell iron metabolism and the stabilized p53 protein enhanced miR-34a transcription. Furthermore, increased expression of miR-34a induced cell proliferation inhibition, cell cycle arrest and cell senescence of lung cancer cells by targeting E2F1/E2F3. We also detected the relevant indicator in tumor tissue such as the iron content, the level of miR-34a and related protein, corresponding results were obtained. Taken together, these observations imply that LF-MF suppressed lung cancer via inhibiting cell iron metabolism, stabilizing p53 protein and activation P53- miR-34a-E2F1/E2F3 pathway.
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27
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Zhang G, Yan H, Chen Q, Liu K, Ling X, Sun L, Zhou N, Wang Z, Zou P, Wang X, Tan L, Cui Z, Zhou Z, Liu J, Ao L, Cao J. Reply to comment on "Effects of cell phone use on semen parameters: Results from the MARHCS cohort study in Chongqing, China". ENVIRONMENT INTERNATIONAL 2017; 98:231-232. [PMID: 27838118 DOI: 10.1016/j.envint.2016.10.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Revised: 10/01/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Affiliation(s)
- Guowei Zhang
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Huan Yan
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Qing Chen
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Kaijun Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Xi Ling
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Lei Sun
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Niya Zhou
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Zhi Wang
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Peng Zou
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Xiaogang Wang
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Lu Tan
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Zhihong Cui
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Ziyuan Zhou
- Department of Environmental Health, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Jinyi Liu
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China
| | - Lin Ao
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China.
| | - Jia Cao
- Institute of Toxicology, College of Preventive Medicine, Third Military Medical University, Chongqing, China.
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28
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Altered micro-ribonucleic acid expression profiles of extracellular microvesicles in the seminal plasma of patients with oligoasthenozoospermia. Fertil Steril 2016; 106:1061-1069.e3. [PMID: 27424049 DOI: 10.1016/j.fertnstert.2016.06.030] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2016] [Revised: 06/13/2016] [Accepted: 06/17/2016] [Indexed: 12/30/2022]
Abstract
OBJECTIVE To determine whether microRNA (miRNA) expression profile is different in extracellular microvesicles collected from seminal plasma of men with oligoasthenozoospermia, to gain further insight into molecular mechanisms underlying male infertility. DESIGN Microarray with quantitative real-time polymerase chain reaction validation and Western blot analysis confirmation. SETTING University research and clinical institutes. PATIENT(S) A total of 24 men, including 12 oligoasthenozoospermic subfertile men and 12 normozoospermic men. INTERVENTION(S) None. MAIN OUTCOME MEASURE(S) Statistically significant altered miRNA expression profiles in oligoasthenozoospermic subfertile men compared with normozoospermic fertile men. RESULT(S) Extracellular microvesicles including exosomes were isolated from seminal plasma by ultracentrifugation. Presence of exosome-specific proteins was confirmed by Western blotting. In the extracellular microvesicles, we analyzed 1,205 miRNAs by microarray and identified 36 miRNAs with altered expression levels in oligoasthenozoospermic compared with normozoospermic fertile men. Seven miRNAs were overexpressed and 29 miRNAs were underexpressed in oligoasthenozoospermic men. Using quantitative real-time polymerase chain reaction as an independent method, we confirmed the significantly higher expression levels of miR-765 and miR-1275 and the significantly lower expression level of miR-15a in oligoasthenozoospermic subfertile men as compared with the normozoospermic men. CONCLUSION(S) We identified altered expression levels of miRNAs in extracellular microvesicles from seminal plasma as part of the molecular events in the male genital tract. These miRNAs may help to understand the molecular mechanisms underlying male infertility.
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29
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Li J, Wang R, Schweickert PG, Karki A, Yang Y, Kong Y, Ahmad N, Konieczny SF, Liu X. Plk1 inhibition enhances the efficacy of gemcitabine in human pancreatic cancer. Cell Cycle 2016; 15:711-9. [PMID: 26890815 PMCID: PMC4845940 DOI: 10.1080/15384101.2016.1148838] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 01/19/2016] [Accepted: 01/20/2016] [Indexed: 01/21/2023] Open
Abstract
Gemcitabine is the standard-of-care for chemotherapy in patients with pancreatic adenocarcinoma and it can directly incorporate into DNA or inhibit ribonucleotide reductase to prevent DNA replication and, thus, tumor cell growth. Most pancreatic tumors, however, develop resistance to gemcitabine. Polo-like kinase 1 (Plk1), a critical regulator in many cell cycle events, is significantly elevated in human pancreatic cancer. In this study, we show that Plk1 is required for the G1/S transition and that inhibition of Plk1 significantly reduces the DNA synthesis rate in human pancreatic cancer cells. Furthermore, the combined effect of a specific Plk1 inhibitor GSK461364A with gemcitabine was examined. We show that inhibition of Plk1 significantly potentiates the anti-neoplastic activity of gemcitabine in both cultured pancreatic cancer cells and Panc1-derived orthotopic pancreatic cancer xenograft tumors. Overall, our study demonstrates that co-targeting Plk1 can significantly enhance the efficacy of gemcitabine, offering a promising new therapeutic option for the treatment of gemcitabine-resistant human pancreatic cancer.
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Affiliation(s)
- Jie Li
- Department of Biochemistry, Purdue University, West Lafayette, IN, USA
| | - Ruixin Wang
- Department of Biochemistry, Purdue University, West Lafayette, IN, USA
| | | | - Anju Karki
- Department of Biological Science, Purdue University, West Lafayette, IN, USA
| | - Yi Yang
- Department of Biological Science, Purdue University, West Lafayette, IN, USA
| | - Yifan Kong
- Department of Biological Science, Purdue University, West Lafayette, IN, USA
| | - Nihal Ahmad
- Department of Dermatology, University of Wisconsin, Madison, WI, USA
| | - Stephen F. Konieczny
- Department of Biological Science, Purdue University, West Lafayette, IN, USA
- Center for Cancer Research, Purdue University, West Lafayette, IN, USA
| | - Xiaoqi Liu
- Department of Biochemistry, Purdue University, West Lafayette, IN, USA
- Center for Cancer Research, Purdue University, West Lafayette, IN, USA
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