1
|
Zhang A, Zhang L, Xie X, Liu D. Inhibition of ATM with KU-55933 Sensitizes Endometrial Cancer Cell Lines to Olaparib. Onco Targets Ther 2023; 16:1061-1071. [PMID: 38144904 PMCID: PMC10748556 DOI: 10.2147/ott.s426923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 12/07/2023] [Indexed: 12/26/2023] Open
Abstract
Background Endometrial cancer (EC) is one of the most prevalent gynecologic cancers, which poses a serious threat to women's health worldwide. Olaparib, the first FDA-approved PARP inhibitor for the treatment of BRCA-mutated breast, ovarian and pancreatic cancers, triggers apoptosis of cancer cells through synthetic lethality by inhibiting PARP1/2 enzymatic activity and BRCA1/2-dependent homologous recombination (HR) repair deficiency. However, the synergistic lethal effects between Olaparib and inhibitors of other DNA damage response proteins, such as ATM, PTEN and RAD51, are still unknown. Aim Exploring the synergistic lethal effect between Olaparib and KU-55933 on EC. Methods The GEPIA database was used to test EC patient survival rate. CCK8 was used for cell viability assays. Western blot was used for examining gene levels. The wound healing assay was used to detect cell migration ability. Flow cytometry was used for detecting the apoptosis rate. All experimental conditions were repeated independently in triplicate and analyzed in three separate experiments. Results In this study, we discovered that the frequency of ATM alterations in endometrial cancer reaches nearly 20% and that there is a positive correlation between ATM alterations and prognosis. Furthermore, we discovered that endometrial cells with low expression levels of ATM are sensitive to Olaparib. Treatment with KU-55933, a specific inhibitor of ATM, significantly enhanced the sensitivity of endometrial cancer cells to Olaparib, as evidenced by colony formation, cell migration and apoptosis assay. Further analysis revealed that KU-55933 potentiates Olaparib-induced cell apoptosis by inhibiting ATM phosphorylation. Conclusion Our study demonstrates that inhibiting ATM could enhance the sensitivity of endometrial cancer to Olaparib, thereby providing a potential alternative treatment for the clinical treatment of endometrial cancer.
Collapse
Affiliation(s)
- Anqing Zhang
- Gynaecology Department, Sunshine Union Hospital, Weifang, People’s Republic of China
| | - Liqin Zhang
- Gynaecology Department, Affiliated Hospital of Weifang Medical University, Weifang, People’s Republic of China
| | - Xia Xie
- Gynaecology Department, Sunshine Union Hospital, Weifang, People’s Republic of China
| | - Dan Liu
- Gynaecology Department, Affiliated Hospital of Weifang Medical University, Weifang, People’s Republic of China
| |
Collapse
|
2
|
Liu Y, Chang Y, Cai Y. Circ_0067835 sponges miR-324-5p to induce HMGA1 expression in endometrial carcinoma cells. J Cell Mol Med 2020; 24:13927-13937. [PMID: 33169939 PMCID: PMC7754019 DOI: 10.1111/jcmm.15996] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/23/2020] [Accepted: 09/29/2020] [Indexed: 12/27/2022] Open
Abstract
Endometrial cancer is a common gynaecological malignant tumour among women across the world. Circular RNAs (circRNAs) are a novel kind of non‐coding RNAs, and they can play a crucial role in multiple cancers. Nevertheless, the mechanisms of circRNAs in regulating gene expression in endometrial cancer are still unclear. Here, our work sought to focus on the role that circ_0067835 exert in progression and development of endometrial cancer cells. We observed circ_0067835 was markedly elevated in endometrial cancer. Then, changes in endometrial cancer cell (RL95‐2 and HEC‐1B) function were determined after circ_0067835 knockdown. Loss‐of‐functional assays revealed that circ_0067835 down‐regulation significantly repressed RL95‐1 and HEC‐1B cell proliferation, migration and invasion. Bioinformatics analysis, luciferase reporter experiment and RNA pull‐down assay were employed to predict and validate circ_0067835 can bind to miR‐324‐5p. Increase in miR‐324‐5p remarkably depressed the proliferation, migration and invasion of endometrial cancer cells via inhibiting high mobility group A1 (HMGA1). HMGA1 is identified as a vital prognostic biomarker in endometrial cancer. Currently, we reported circ_0067835 was positively correlated with HMGA1 in endometrial cancer. We implied that circ_0067835 was capable of sponging miR‐324‐5p and inducing its downstream target HMGA1 in vitro and in vivo. In conclusion, circ_0067835 can compete with miR‐324‐5p, resulting in HMGA1 up‐regulation, and therefore induce the development of endometrial cancer.
Collapse
Affiliation(s)
- Yun Liu
- Department of Obstetrics and Gynecology, Beijing Friendship Hospital Affiliated to Capital Medical University, Beijing, China
| | - Yue Chang
- Department of Obstetrics and Gynecology, Beijing Friendship Hospital Affiliated to Capital Medical University, Beijing, China
| | - Yixuan Cai
- Department of Obstetrics and Gynecology, Beijing Friendship Hospital Affiliated to Capital Medical University, Beijing, China
| |
Collapse
|
3
|
Du J, Zhang F, Zhang L, Jia Y, Chen H. MicroRNA-103 regulates the progression in endometrial carcinoma through ZO-1. Int J Immunopathol Pharmacol 2020; 33:2058738419872621. [PMID: 31456452 PMCID: PMC6713959 DOI: 10.1177/2058738419872621] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Endometrial carcinoma (EC) is one of the most common gynecological cancers in many developing countries. Although tremendous advances have been made in the diagnosis and treatment of EC, there is still no adequate biomarker currently available for predicting the prognosis of this cancer. In this study, we found that miR-103 expression was significantly upregulated in EC tissues than their paired non-carcinoma tissues. Overexpression of miR-103 significantly promoted EC cell proliferation, while downregulation of miR-103 significantly suppressed EC cell proliferation. In addition, ZO-1 expression was significantly downregulated in the EC tissues than their paired non-carcinoma tissues. We also found an inverse correlation between ZO-1 and miR-103. Moreover, ZO-1 was validated as the direct target of miR-103. The downregulation of ZO-1 significantly enhanced EC cell proliferation. In conclusion, miR-103 could regulate EC cell proliferation through directly targeting ZO-1. Our results provide a potential development of microRNA-based targeted approaches for the treatment of EC.
Collapse
Affiliation(s)
- Jing Du
- Department of Gynecology and Obstetrics, Liaocheng People's Hospital, Liaocheng, P.R. China
| | - Fengli Zhang
- Department of Gynecology and Obstetrics, Liaocheng People's Hospital, Liaocheng, P.R. China
| | - Ling Zhang
- Department of Gynecology and Obstetrics, Liaocheng People's Hospital, Liaocheng, P.R. China
| | - Yueyue Jia
- Department of Gynecology and Obstetrics, Liaocheng People's Hospital, Liaocheng, P.R. China
| | - Huixiao Chen
- Department of Gynecology and Obstetrics, Liaocheng People's Hospital, Liaocheng, P.R. China
| |
Collapse
|
4
|
Espedal H, Fonnes T, Fasmer KE, Krakstad C, Haldorsen IS. Imaging of Preclinical Endometrial Cancer Models for Monitoring Tumor Progression and Response to Targeted Therapy. Cancers (Basel) 2019; 11:cancers11121885. [PMID: 31783595 PMCID: PMC6966645 DOI: 10.3390/cancers11121885] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/22/2019] [Accepted: 11/25/2019] [Indexed: 12/11/2022] Open
Abstract
Endometrial cancer is the most common gynecologic malignancy in industrialized countries. Most patients are cured by surgery; however, about 15% of the patients develop recurrence with limited treatment options. Patient-derived tumor xenograft (PDX) mouse models represent useful tools for preclinical evaluation of new therapies and biomarker identification. Preclinical imaging by magnetic resonance imaging (MRI), positron emission tomography-computed tomography (PET-CT), single-photon emission computed tomography (SPECT) and optical imaging during disease progression enables visualization and quantification of functional tumor characteristics, which may serve as imaging biomarkers guiding targeted therapies. A critical question, however, is whether the in vivo model systems mimic the disease setting in patients to such an extent that the imaging biomarkers may be translatable to the clinic. The primary objective of this review is to give an overview of current and novel preclinical imaging methods relevant for endometrial cancer animal models. Furthermore, we highlight how these advanced imaging methods depict pathogenic mechanisms important for tumor progression that represent potential targets for treatment in endometrial cancer.
Collapse
Affiliation(s)
- Heidi Espedal
- Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway;
- Mohn Medical Imaging and Visualization Centre, Department of Radiology, Haukeland University Hospital, 5021 Bergen, Norway
- Correspondence: (H.E.); (I.S.H.)
| | - Tina Fonnes
- Centre for Cancer Biomarkers, Department of Clinical Science, University of Bergen, 5021 Bergen, Norway; (T.F.); (C.K.)
- Department of Obstetrics and Gynecology, Haukeland University Hospital, 5021 Bergen, Norway
| | - Kristine E. Fasmer
- Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway;
- Mohn Medical Imaging and Visualization Centre, Department of Radiology, Haukeland University Hospital, 5021 Bergen, Norway
| | - Camilla Krakstad
- Centre for Cancer Biomarkers, Department of Clinical Science, University of Bergen, 5021 Bergen, Norway; (T.F.); (C.K.)
- Department of Obstetrics and Gynecology, Haukeland University Hospital, 5021 Bergen, Norway
| | - Ingfrid S. Haldorsen
- Department of Clinical Medicine, University of Bergen, 5021 Bergen, Norway;
- Mohn Medical Imaging and Visualization Centre, Department of Radiology, Haukeland University Hospital, 5021 Bergen, Norway
- Correspondence: (H.E.); (I.S.H.)
| |
Collapse
|
5
|
Wang Q, Zhu W. MicroRNA-873 inhibits the proliferation and invasion of endometrial cancer cells by directly targeting hepatoma-derived growth factor. Exp Ther Med 2019; 18:1291-1298. [PMID: 31363373 DOI: 10.3892/etm.2019.7713] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 05/02/2019] [Indexed: 12/11/2022] Open
Abstract
An accumulation of evidence has demonstrated that abnormal microRNA (miRNA or miR) expression is associated with different types of cancer, including endometrial cancer (EC). The dysregulation of miRNAs may serve important roles in the development and progression of EC by regulating multiple aggressive biological behaviors, including cell proliferation, apoptosis, metastasis and angiogenesis. An in-depth understanding of the miRNAs associated with EC initiation and progression may be crucial for identifying successful therapeutic techniques. miR-873 has been demonstrated to be dysregulated in different types of cancer. However, the expression status and regulatory roles of miR-873 are yet to be elucidated in EC. In the present study, reverse transcription-quantitative PCR was carried out to detect miR-873 expression in EC tissues and cell lines. Cell Counting Kit-8 and in vitro invasion assays were utilized to determine the influence of miR-873 on the proliferation and invasion of EC cells. miR-873 expression was revealed to be downregulated in EC tissues and cell lines. Decreased miR-873 expression was significantly associated with International Federation of Gynecology and Obstetrics stage and lymph node metastasis of patients with EC. Functional assays revealed that resumed miR-873 expression suppressed the proliferation and invasion of EC cells. Additionally, hepatoma-derived growth factor (HDGF) was indicated to be a direct target gene of miR-873 in EC cells. HDGF was highly expressed in EC tissues and inversely correlated with miR-873 expression. HDGF silencing also imitated the tumor-suppressor activity of miR-873 overexpression in EC cells. A series of rescue experiments identified that recovered HDGF expression hindered the anti-proliferative and anti-invasive roles of miR-873 upregulation in EC cells. In conclusion, the present study indicated that miR-873 serves an important role as a tumor suppressor in EC development by directly targeting HDGF. The results may provide a novel insight into clinical treatments, which can be used to prevent EC aggression.
Collapse
Affiliation(s)
- Qin Wang
- Department of Gynaecology and Obstetrics, The First People's Hospital of Kunshan, Kunshan, Jiangsu 215000, P.R. China
| | - Weipei Zhu
- Department of Gynaecology and Obstetrics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| |
Collapse
|
6
|
Wang RQ, Lan YL, Lou JC, Lyu YZ, Hao YC, Su QF, Ma BB, Yuan ZB, Yu ZK, Zhang HQ, Wang DS, Zhu TZ, Ding Y, Zhang N, Zhang B. Expression and methylation status of LAMA2 are associated with the invasiveness of nonfunctioning PitNET. Ther Adv Endocrinol Metab 2019; 10:2042018818821296. [PMID: 30728939 PMCID: PMC6351710 DOI: 10.1177/2042018818821296] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 12/04/2018] [Indexed: 12/18/2022] Open
Abstract
The laminin subunit alpha 2 (LAMA2) gene encodes an alpha 2 chain, which constitutes one of the subunits of laminin 2 (merosin) and laminin 4 (s-merosin). In the current study, we investigated the relationship between LAMA2 promoter methylation status and the invasiveness of clinically nonfunctioning pituitary adenomas (PitNETs). Specimens from patients with nonfunctioning PitNET were classified into three groups according to preoperative computed tomography (CT)/magnetic resonance imaging findings: a normal group (n = 6), non-invasive group (n = 11) and invasive group (n = 6). LAMA2 expression was assessed using quantitative real-time polymerase chain reaction (RT-qPCR) and western blotting, and the methylation status of the LAMA2 promoter region was observed using sodium bisulfite sequencing. Furthermore, 5-aza-2-deoxycytidine was used to explore the relationship between decreased LAMA expression and methylation in PitNET cells. According to the RT-qPCR and western blotting results, LAMA2 expression was downregulated in invasive PitNET, while the methylation of the LAMA2 promoter was increased. Methylation of the LAMA2 promoter decreased the expression of LAMA2. Thus, changes in LAMA2 expression due to promoter methylation were inversely correlated with the invasiveness of PitNET and the protein functions as a tumor suppressor. In addition, overexpression and demethylation of LAMA2 suppressed the invasion of PitNET cells, partially by exerting effects on the PTEN-PI3K/AKT signaling pathway and matrix metalloproteinase-9 (MMP-9). Furthermore, a xenograft model was also generated, and LAMA2 overexpression significantly suppressed tumor growth in vivo. Thus, LAMA2 expression and methylation patterns might be used as biomarkers to predict the prognosis of patients with PitNET.
Collapse
Affiliation(s)
- Ruo-Qiang Wang
- Department of Neurosurgery, Shenzhen People’s Hospital, Shenzhen, China; The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yu-Long Lan
- Department of Neurosurgery, Shenzhen People’s Hospital, Shenzhen, China; The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Jia-Cheng Lou
- Department of Neurosurgery, Shenzhen People’s Hospital, Shenzhen, China; The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yi-Zhu Lyu
- Department of Hematology, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yu-Chao Hao
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Qian-Fei Su
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Bin-Bin Ma
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zhong-Bo Yuan
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Zhi-Kuan Yu
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hong-Qiang Zhang
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Dong-Sheng Wang
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Ting-Zhun Zhu
- The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Yan Ding
- Department of Pediatrics, Children’s Hospital of Boston, Harvard Medical School, Boston, MA, USA
| | - Ning Zhang
- Department of Pharmacology, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | | |
Collapse
|
7
|
Sato W, Ikeda K, Urano T, Abe Y, Nakasato N, Horie-Inoue K, Takeda S, Inoue S. Efp promotes in vitro and in vivo growth of endometrial cancer cells along with the activation of nuclear factor-κB signaling. PLoS One 2018; 13:e0208351. [PMID: 30586414 PMCID: PMC6306158 DOI: 10.1371/journal.pone.0208351] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 11/15/2018] [Indexed: 01/05/2023] Open
Abstract
Endometrial cancer is common among postmenopausal women and its incidence is increasing in developed countries. Considering that >80% of endometrial cancers are assumed to be estrogen-related, higher estrogen exposure will be relevant to tumorigenesis. Therefore, the roles of estrogen target genes will be important to understand the pathophysiological mechanisms. We previously revealed that estrogen-responsive RING finger protein Efp contributes to breast cancer progression through the protein degradation of cell cycle checkpoint 14-3-3σ. We and others also proposed that Efp has tumor-promoting activities in estrogen receptor (ER)-negative cancer cells. In addition, Efp plays a role in type I interferon production by activating antiviral signaling, which provokes nuclear factor-κB (NF-κB) signaling. In the present study, we investigate whether Efp plays a critical role in endometrial cancer biology. We show that siRNA-mediated Efp knockdown represses the proliferation and migration of endometrial cancer ER-positive Ishikawa and ER-negative HEC-1A cells. Efp knockdown increases 14-3-3σ protein levels and decreases the rates proliferative stage cells. Efp siRNA significantly inhibits the in vivo tumor growth of endometrial cancer cells in both subcutaneous and orthotopic xenograft models. Intriguingly, Efp knockdown represses NF-κB-dependent transactivation and transcription of target genes, such as IL6ST and IL18, in endometrial cancer cells. Overall, Efp would exert a tumor-promoting role through modulating NF-κB pathway and 14-3-3σ protein degradation in endometrial cancer regardless of its estrogen receptor status. Our results indicate that Efp could be a potential diagnostic and therapeutic target for endometrial cancer.
Collapse
Affiliation(s)
- Wataru Sato
- Division of Gene Regulation and Signal Transduction, Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama, Japan
| | - Kazuhiro Ikeda
- Division of Gene Regulation and Signal Transduction, Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama, Japan
| | - Tomohiko Urano
- Department of Geriatric Medicine, Graduate School of Medicine, The University of Tokyo, Bunkyo-ku, Japan
| | - Yayoi Abe
- Division of Gene Regulation and Signal Transduction, Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama, Japan
- Department of Obstetrics and Gynecology, School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
| | - Norie Nakasato
- Division of Gene Regulation and Signal Transduction, Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama, Japan
- Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Kawagoe-shi, Saitama, Japan
| | - Kuniko Horie-Inoue
- Division of Gene Regulation and Signal Transduction, Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama, Japan
| | - Satoru Takeda
- Department of Obstetrics and Gynecology, School of Medicine, Juntendo University, Bunkyo-ku, Tokyo, Japan
- Department of Obstetrics and Gynecology, Saitama Medical Center, Saitama Medical University, Kawagoe-shi, Saitama, Japan
| | - Satoshi Inoue
- Division of Gene Regulation and Signal Transduction, Research Center for Genomic Medicine, Saitama Medical University, Hidaka-shi, Saitama, Japan
- Functional Biogerontology, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo, Japan
- * E-mail:
| |
Collapse
|
8
|
Torres A, Kozak J, Korolczuk A, Rycak D, Wdowiak P, Maciejewski R, Torres K. Locked nucleic acid-inhibitor of miR-205 decreases endometrial cancer cells proliferation in vitro and in vivo. Oncotarget 2018; 7:73651-73663. [PMID: 27655663 PMCID: PMC5342005 DOI: 10.18632/oncotarget.12043] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Accepted: 08/27/2016] [Indexed: 12/18/2022] Open
Abstract
Pathogenesis of endometrial cancer has been connected with alterations of microRNA expression and in particular miR-205 up–regulation was consistently reported in this carcinoma. Presented study aimed to investigate if inhibition of miR-205 expression using LNA-modified-nucleotide would attenuate endometrial cancer cells proliferation in vitro and in vivo. In the course of the study we found that the proliferation of endometrial cancer cells (HEC-1-B, RL-95, KLE, Ishikawa) transfected with LNA-miR-205-inhibitor and evaluated using real time cell monitoring as well as standard cell proliferation assay, was significantly decreased. Next, LNA-miR-205-inhibitor was used to assess the in vivo effects of miR-205 inhibition of endometrial cancer growth. Cby.Cg-Foxn1<nu>/cmdb mice bearing endometrial cancer xenografts were intraperitoneally injected with nine dosages of 25mg/kg of miR-205-LNA-inhibitor or scramble control or phosphatase buffered saline and were observed for 32 days. We found that systemic administration of miR-205-LNA-inhibitor was technically possible, and exerted inhibitory effect on endometrial cancer xenograft growth in vivo with only mild toxic effects in treated animals. In conclusion our results suggest that systemic delivery of miR-205-LNA-inhibitor is feasible, devoid of significant toxicity, and could be a promising treatment strategy for endometrial cancer. Therefore it warrants further studies in other animal models.
Collapse
Affiliation(s)
- Anna Torres
- Laboratory of Biostructure, Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090, Lublin, Poland
| | - Joanna Kozak
- Laboratory of Biostructure, Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090, Lublin, Poland
| | - Agnieszka Korolczuk
- Department of Clinical Pathomorphology, Medical University of Lublin, Jaczewskiego 8, 20-090, Lublin, Poland
| | - Dominika Rycak
- Laboratory of Biostructure, Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090, Lublin, Poland
| | - Paulina Wdowiak
- Laboratory of Biostructure, Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090, Lublin, Poland
| | - Ryszard Maciejewski
- Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090, Lublin, Poland
| | - Kamil Torres
- Chair and Department of Human Anatomy, Medical University of Lublin, Jaczewskiego 4, 20-090, Lublin, Poland
| |
Collapse
|
9
|
Kozak J, Wdowiak P, Maciejewski R, Torres A. A guide for endometrial cancer cell lines functional assays using the measurements of electronic impedance. Cytotechnology 2017; 70:339-350. [PMID: 28988392 PMCID: PMC5809663 DOI: 10.1007/s10616-017-0149-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2017] [Accepted: 09/22/2017] [Indexed: 12/29/2022] Open
Abstract
Endometrial cancer cell lines are critical tools to investigate the molecular mechanism of tumorigenesis using the end point cell-based assay such as proliferation, cytotoxicity, apoptosis, anoikis or migration and invasion. The proper assay optimization and performance is essential for physiologically relevant results interpretation. In this study we use label-free real-time cell analysis platform (xCELLigence) to optimize growing conditions for proliferation and migration experiments of two types of endometrial cancer cell lines HEC-1-B, HEC-1-A, KLE, and Ishikawa. Profiling of cell lines by cell index measurement in proliferation and migration experiments was performed. Our experimental approach allowed us to monitor particular stage of the cell growth, to see the relation between seeding density and dynamic cell growth as well as to choose the optimal serum concentration as chemoattractant in migration experiment. The highest rate of proliferation was shown for Ishikawa cells. The rapid pace of cellular migration was observed in case of KLE and HEC-1-B cells as compared to weak migratory activity of Ishikawa cells. The cell index that reflects the cell status characterized real-time cytological profile of each analyzed cell line. These cell profiles were crucial for better planning the classical end-point assays used in further research.
Collapse
Affiliation(s)
- Joanna Kozak
- Laboratory of Biostructure, Department of Normal Anatomy, Medical University of Lublin, 20-090, Lublin, Poland.
| | - Paulina Wdowiak
- Laboratory of Biostructure, Department of Normal Anatomy, Medical University of Lublin, 20-090, Lublin, Poland
| | - Ryszard Maciejewski
- Laboratory of Biostructure, Department of Normal Anatomy, Medical University of Lublin, 20-090, Lublin, Poland
| | - Anna Torres
- Laboratory of Biostructure, Department of Normal Anatomy, Medical University of Lublin, 20-090, Lublin, Poland
| |
Collapse
|
10
|
Cheng KY, Hao M. Mammalian Target of Rapamycin (mTOR) Regulates Transforming Growth Factor-β1 (TGF-β1)-Induced Epithelial-Mesenchymal Transition via Decreased Pyruvate Kinase M2 (PKM2) Expression in Cervical Cancer Cells. Med Sci Monit 2017; 23:2017-2028. [PMID: 28446743 PMCID: PMC5417590 DOI: 10.12659/msm.901542] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Accepted: 10/10/2016] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Epithelial-mesenchymal transition (EMT) plays an important role in cancer tumorigenesis. Transforming growth factor β1 (TGF-β1) can induced EMT, which could increase tumor migration and invasion. Moreover, recent studies have been proven that mammalian target of rapamycin (mTOR) is a critical regulator of EMT. We investigated the mechanisms of mTOR in transforming growth factor β1 (TGF-β1)-induced EMT in cervical cancer cells. MATERIAL AND METHODS HeLa and SiHa cells were treated with 10 ng/ml TGF-β1 to induce EMT. Then, they were treated with or without rapamycin. CCK8 assay was performed to determine cell proliferation. Cell migration was detected by wound-healing assay; apoptosis was analyzed by flow cytometry; mTOR inhibitors inhibited mTOR pathway to assess the expression of E-cadherin, Vimentin STAT3, Snail2, p-p70s6k, and PKM2 expression. RESULTS TGF-β1 promoted proliferation and migration, and attenuated apoptosis in cervical carcinoma cells. Rapamycin abolished TGF-β1-induced EMT cell proliferation and migration and reversed TGF-β1-induced EMT. E-cadherin were suppressed, whereas Vimentin and PKM2 were increased in HeLa and SiHa cells after stimulation with TGF-β1. Moreover, mTOR was activated in the process of TGF-β1-induced EMT. Rapamycin inhibited the phosphorylation of p70s6k. Furthermore, inhibition of the mTOR pathway decreased PKM2 expression. CONCLUSIONS Inhibition of the mTOR pathway abolished TGF-β1-induced EMT and reduced mTOR/p70s6k signaling, which downregulated PKM2 expression. Our results provide novel mechanistic insight into the anti-tumor effects of inhibition of mTOR.
Collapse
Affiliation(s)
| | - Min Hao
- Corresponding Author: Min Hao, e-mail:
| |
Collapse
|
11
|
Peterson LE, Kovyrshina T. Progression inference for somatic mutations in cancer. Heliyon 2017; 3:e00277. [PMID: 28492066 PMCID: PMC5415494 DOI: 10.1016/j.heliyon.2017.e00277] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 03/08/2017] [Accepted: 03/23/2017] [Indexed: 01/05/2023] Open
Abstract
Computational methods were employed to determine progression inference of genomic alterations in commonly occurring cancers. Using cross-sectional TCGA data, we computed evolutionary trajectories involving selectivity relationships among pairs of gene-specific genomic alterations such as somatic mutations, deletions, amplifications, downregulation, and upregulation among the top 20 driver genes associated with each cancer. Results indicate that the majority of hierarchies involved TP53, PIK3CA, ERBB2, APC, KRAS, EGFR, IDH1, VHL, etc. Research into the order and accumulation of genomic alterations among cancer driver genes will ever-increase as the costs of nextgen sequencing subside, and personalized/precision medicine incorporates whole-genome scans into the diagnosis and treatment of cancer.
Collapse
Affiliation(s)
- Leif E. Peterson
- Center for Biostatistics, Houston Methodist Research Institute, Houston, TX 77030, USA
- Dept. of Healthcare Policy and Research, Weill Cornell Medical College, Cornell University, New York, NY 10065, USA
- Dept. of Biostatistics, School of Public Health, University of Texas – Health Science Center, Houston, TX 77030, USA
- Dept. of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
- Dept. of Neuroscience and Experimental Therapeutics, Texas A&M University Health Science Center, College Station, TX 77843, USA
| | - Tatiana Kovyrshina
- Center for Biostatistics, Houston Methodist Research Institute, Houston, TX 77030, USA
- Dept. of Mathematics and Statistics, University of Houston – Downtown, Houston, TX 77002, USA
| |
Collapse
|
12
|
Zheng Z, Zhang Y, Zhang Z, Yang Y, Song T. Effect of miR-106b on Invasiveness of Pituitary Adenoma via PTEN-PI3K/AKT. Med Sci Monit 2017; 23:1277-1285. [PMID: 28288092 PMCID: PMC5360419 DOI: 10.12659/msm.900092] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Pituitary adenomas are mostly benign tumors, although certain cases have invasiveness, which might be related with high expression of miR-106b. The PTEN-PI3K/AKT signal pathway is known to be related with cell migration and invasion. Among these, PTEN is the target gene for miR-106b. Whether miR-106b affects invasiveness of pituitary adenoma via PTEN-PI3K/AKT is unclear. Material/Methods Both invasive and non-invasive pituitary adenoma tissue samples were collected from our Neurosurgery Department, in parallel with brain tissues after head contusion surgery. Pituitary adenoma cell line HP75 was cultured in vitro and divided into NC and miR-106b inhibitor groups for measuring cell cycle/proliferation. Malignant growth of cells was measured by agarose gel clonal assay, while cell migration and invasion were reflected by starch assay and Transwell assay, respectively. The expression of PTEN, PI3K/AKT, and MMP-9 was measured. Results MiR-106b was significantly up-regulated in pituitary adenoma but PTEN was down-regulated, especially in invasive tumors. The inhibition of miR-106b remarkably suppressed proliferation and anchorage-independent growth of HP75 cells, with major arrest of cell cycles. The inhibition of miR-106b significantly depressed starch healing and invasive potency of cells. A negative targeted regulation existed between miR-106b and PTEN, as the inhibition of miR-106b significantly enhanced PTEN expression, affecting the activity of downstream PI3K/AKT signaling pathway, thus affecting migration and invasion of pituitary adenoma. Conclusions MiR-106b can affect migration and invasion of pituitary adenoma cells via regulating PTEN and further activity of the PI3K/AKT signaling pathway and MMP-9 expression.
Collapse
Affiliation(s)
- Zhiming Zheng
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
| | - Yongchao Zhang
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
| | - Zhen Zhang
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
| | - Yihang Yang
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
| | - Tao Song
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
| |
Collapse
|
13
|
Gu HZ, Lin RR, Wang HC, Zhu XJ, Hu Y, Zheng FY. Effect of Momordica charantia protein on proliferation, apoptosis and the AKT signal transduction pathway in the human endometrial carcinoma Ishikawa H cell line in vitro. Oncol Lett 2017; 13:3032-3038. [PMID: 28521410 PMCID: PMC5431312 DOI: 10.3892/ol.2017.5830] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Accepted: 11/17/2016] [Indexed: 01/22/2023] Open
Abstract
Endometrial carcinoma (EC) is one of the most common female malignancies, and there is an urgent requirement to explore new therapeutic strategies. In the present study, Ishikawa H cells were treated with Momordica charantia protein (MCP30). The cell morphology, growth inhibition rate, cell cycle distribution, and expression of phosphate and tensin homolog, P-AKT and AKT were measured. DNA fragmentation analysis and Annexin V-fluorescein isothiocyanate/propidium iodide double staining assay were used to analyze cell apoptosis. MCP30 decreased the viability of Ishikawa H cells in a dose- and time-dependent manner. The early apoptotic rates of Ishikawa H cells treated with MCP30 at 666.67 pM reached to 16.07±0.15%, following 72 h of treatment. DNA ladder was observed in cells treated with 333.33 and 666.67 pM MCP30 following 72 h of treatment. MCP30 blocks Ishikawa H cells from progressing between the S-phase and the G2/M-phase in a time- and concentration-dependent manner. Western blotting revealed that MCP30 treatment decreased the levels of P-AKT in a dose-dependent manner. It was revealed that MCP30 decreases cell proliferation, and induces apoptosis and S-phase cell cycle arrest through the AKT signaling pathway in Ishikawa H cells.
Collapse
Affiliation(s)
- Hang-Zhi Gu
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Rong-Rong Lin
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Han-Chu Wang
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xue-Jie Zhu
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yan Hu
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Fei-Yun Zheng
- Department of Gynecology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| |
Collapse
|
14
|
Xia X, Wang J, Liu Y, Yue M. Lower Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Promotes the Proliferation and Migration of Endometrial Carcinoma. Med Sci Monit 2017; 23:966-974. [PMID: 28225751 PMCID: PMC5333717 DOI: 10.12659/msm.899341] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background The incidence and death rates of endometrial cancer are alarmingly increasing. The diagnosis and treatment of endometrial cancer is crucial to decreasing mortality. Cystic fibrosis transmembrane conductance regulator (CFTR) belongs to the adenosine triphosphate (ATP)-binding cassette transporter family and plays an essential role in anion regulation and tissue homeostasis of various epithelia. This study explored the expression of CFTR in endometrial carcinoma and the role of CFTR in proliferation and migration of endometrial carcinoma cells. Material/Methods Immunohistochemistry and real-time (RT)-PCR were used to test the expression of CFTR in normal endometrium and endometrial carcinoma. CFTR inhibitor was used to restrain the expression of CFTR on the endometrial carcinoma, the effects on the proliferation and migration of endometrial carcinoma cells were also studied. RT-PCR was performed to test the expression of mir-125b after restraining CFTR. Proliferation and migration capability of endometrial carcinoma cells were detected after transfection of endometrial carcinoma cells with mir-125b mimic. Results Compared with cells from normal endometrium, the expression of CFTR was significantly upregulated in endometrial carcinoma cells. After adding CFTR(inh)172, the capability for proliferation and transfer of endometrial carcinoma cells was strengthened, the expression of mir-125b was reduced, and after transfection with mir-125b mimics entering the endometrial carcinoma cells, the ability of the proliferation and transfer of endometrial carcinoma cells was also reduced. Conclusions The high expression of CFTR in the endometrial carcinoma cells played a pivotal role in restraining the proliferation and transfer of endometrial carcinoma cells.
Collapse
Affiliation(s)
- Xian Xia
- Department of Nosocomial Infection Control, PLA Army General Hospital, Beijing, China (mainland)
| | - Jie Wang
- School of Nursing, Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Yuan Liu
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| | - Ming Yue
- Department of Infectious Diseases, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China (mainland)
| |
Collapse
|
15
|
Han CD, Ge WS. Up-Regulation of Angiotensin-Converting Enzyme (ACE) Enhances Cell Proliferation and Predicts Poor Prognosis in Laryngeal Cancer. Med Sci Monit 2016; 22:4132-4138. [PMID: 27801393 PMCID: PMC5094469 DOI: 10.12659/msm.896933] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Background The angiotensin-converting enzyme (ACE, CD143) gene plays a crucial role in the pathology of many cancers. Previous studies mostly focused on the gene polymorphism, but the other functions of ACE have rarely been reported. The purpose of this study was to investigate the expression of ACE and its biological function, as well as its prognostic value, in laryngeal cancer. Material/Methods The expression of ACE was detected by quantitative real-time polymerase chain reaction (qRT-PCR) analysis in 106 patients with laryngeal cancer and 85 healthy people. Then the cell proliferation was estimated after the cell lines Hep-2 were transfected with pGL3-ACE and empty vector, respectively. In addition, the relationship between ACE expression and clinicopathologic characteristics was analyzed. Finally, Kaplan-Meier analysis was used to evaluate the overall survival of patients with different ACE expression, while Cox regression analysis was conducted to reveal the prognostic value of ACE in laryngeal cancer. Results Our results demonstrate that ACE is over-expressed in laryngeal cancer and thus promotes cell proliferation. The up-regulation of ACE was significantly influenced by tumor stage and lymph node metastasis. Patients with high ACE expression had a shorter overall survival compared with those with low ACE expression according to Kaplan-Meier analysis. The ACE gene was also found to be an important factor in the prognosis of laryngeal cancer. Conclusions Our study shows that the ACE gene was up-regulated, which promoted the cell proliferation, and it could be an independent prognostic marker in laryngeal cancer.
Collapse
Affiliation(s)
- Chao-Dong Han
- Department of Otolaryngology, Liaocheng People's Hospital and EENT Hospital, Liaocheng, Shandong, China (mainland)
| | - Wen-Sheng Ge
- Department of Otolaryngology, Liaocheng People's Hospital and EENT Hospital, Liaocheng, Shandong, China (mainland)
| |
Collapse
|
16
|
Wu C, Luo J. Long Non-Coding RNA (lncRNA) Urothelial Carcinoma-Associated 1 (UCA1) Enhances Tamoxifen Resistance in Breast Cancer Cells via Inhibiting mTOR Signaling Pathway. Med Sci Monit 2016; 22:3860-3867. [PMID: 27765938 PMCID: PMC5077288 DOI: 10.12659/msm.900689] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Background Long non-coding RNA (lncRNA) UCA1 is an oncogene in breast cancer. The purpose of this study was to investigate the role of UCA1 in tamoxifen resistance of estrogen receptor positive breast cancer cells. Material/Methods Tamoxifen sensitive MCF-7 cells were transfected for UCA1 overexpression, while tamoxifen resistant LCC2 and LCC9 cells were transfected with UCA siRNA for UCA1 knockdown. qRT-PCR was performed to analyze UCA1 expression. CCK-8 assay, immunofluorescence staining of cleaved caspase-9, and flow cytometric analysis of Annexin V/PI staining were used to assess tamoxifen sensitivity. Western blot analysis was performed to detect p-AKT and p-mTOR expression. Results LncRNA UCA1 was significantly upregulated in tamoxifen resistant breast cancer cells compared to tamoxifen sensitive cells. LCC2 and LCC9 cells transfected with UCA1 siRNA had significantly higher ratio of apoptosis after tamoxifen treatment. UCA1 siRNA significantly decreased the protein levels of p-AKT and p-mTOR in LCC2 and LCC9 cells. Enforced UCA1 expression substantially reduced tamoxifen induced apoptosis in MCF-7 cells, while rapamycin treatment abrogated the protective effect of UCA1. Conclusions UCA1 upregulation was associated with tamoxifen resistance in breast cancer. Mechanistically, UCA1 confers tamoxifen resistance to breast cancer cells partly via activating the mTOR signaling pathway.
Collapse
Affiliation(s)
- Chihua Wu
- Department of Breast Surgery, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, School of Clinical Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China (mainland)
| | - Jing Luo
- Department of Breast Surgery, Sichuan Academy of Medical Science and Sichuan Provincial People's Hospital, School of Clinical Medicine, University of Electronic Science and Technology of China, Chengdu, Sichuan, China (mainland)
| |
Collapse
|
17
|
Liu X, Bi Y. Y-27632 Increases Sensitivity of PANC-1 Cells to EGCG in Regulating Cell Proliferation and Migration. Med Sci Monit 2016; 22:3529-3534. [PMID: 27694793 PMCID: PMC5063426 DOI: 10.12659/msm.897594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Background The study aimed to investigate the inhibitory effect of (1R,4r)-4-((R)-1-aminoethyl)-N-(pyridin-4-yl) cyclohexanecarboxamide (Y-27632) and (−)-epigallocatechin-3-gallate (EGCG) on the proliferation and migration of PANC-1 cells. EGCG, found in green tea, has been previously shown to be one of the most abundant and powerful catechins in cancer prevention and treatment. Y-27632, a selective inhibitor of rho-associated protein kinase 1, is widely used in treating cardiovascular disease, inflammation, and cancer. Material/Methods PANC-1 cells, maintained in Dulbecco’s Modified Eagle’s Medium, were treated with dimethyl sulfoxide (control) as well as different concentrations (20, 40, 60, and 80 μg/mL) of EGCG for 48 h. In addition, PANC-1 cells were treated separately with 60 μg/mL EGCG, 20 μM Y-27632, and EGCG combined with Y-27632 (60 μg/mL EGCG + 20 μM Y-27632) for 48 h. The effect of EGCG and Y-27632 on the proliferation and migration of PANC-1 cells was evaluated using Cell Counting Kit-8 and transwell migration assays. The expression of peroxisome proliferator–activated receptor alpha (PPARα) and Caspase-3 mRNA was determined by Quantitative real-time polymerase chain reaction (RT-qPCR). Results EGCG (20–80 μg/mL) inhibited cell viability in a dose-dependent manner. Y-27632 enhanced the sensitivity of PANC-1 cells to EGCG (by increasing the expression of PPARα and Caspase-3 mRNA) and suppressed cell proliferation. PANC-1 cell migration was inhibited by treatment with a combination of EGCG and Y-27632. Conclusions Y-27632 increases the sensitivity of PANC-1 cells to EGCG in regulating cell proliferation and migration, which is likely to be related to the expression of PPARα mRNA and Caspase-3 mRNA.
Collapse
Affiliation(s)
- Xing Liu
- School of Public Health, Wuhan University, Wuhan, Hubei, China (mainland)
| | - Yongyi Bi
- School of Public Health, Wuhan University, Wuhan, Hubei, China (mainland)
| |
Collapse
|
18
|
Xue Z, Zhu X, Teng Y. Relationship Between Murine Double Minute 2 (MDM2) T309G Polymorphism and Endometrial Cancer Risk: A Meta-Analysis. Med Sci Monit 2016; 22:3186-90. [PMID: 27604213 PMCID: PMC5026055 DOI: 10.12659/msm.896973] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background Endometrial cancer is one of the most common cancers in female patients. Many studies have investigated the association between the MDM2 T309G genotype and endometrial cancer incidence, but the results have been inconclusive. Material/Methods We performed a systematic search in PubMed and Web of Science databases (update until October 21, 2015) for all English-language publications. The associations are indicated as pooled odds ratio (OR) and 95% confidence intervals (CI). Results We identified 8 relevant publications (9 case-control studies), including 2188 cases and 4654 controls, that assessed the relationship between MDM2 T309G polymorphism and endometrial cancer risk. There was a significant association between MDM2 T309G polymorphism and endometrial cancer risk in the overall population in the recessive model (OR=1.61; 95% CI: 1.19–2.19; P=0.002). In the subgroup of different ethnic populations, the subgroup analysis showed MDM2 T309G polymorphism was significantly associated with increased endometrial cancer risk in Caucasians (OR=1.75; 95% CI: 1.16–2.63; P=0.007). No similar result was found in Asians. Conclusions Our meta-analysis provides evidence that MDM2 T309G polymorphism is associated with endometrial cancer, especially in Caucasians.
Collapse
Affiliation(s)
- Zhuowei Xue
- Department of Obstetrics and Gynaecology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| | - Xiaolu Zhu
- Department of Obstetrics and Gynaecology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| | - Yincheng Teng
- Department of Obstetrics and Gynaecology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China (mainland)
| |
Collapse
|
19
|
Wang H, Gao W. DJ-1 Expression in Cervical Carcinoma and its Effects on Cell Viability and Apoptosis. Med Sci Monit 2016; 22:2943-9. [PMID: 27544688 PMCID: PMC5004985 DOI: 10.12659/msm.896861] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background This study aimed to investigate the expression of DJ-1 in cervical carcinoma and its effects on cell viability and apoptosis. Material/Methods Cervical carcinoma cell line Hela and 85 tissue samples, including 45 primary tumor biopsies, 30 para-carcinoma tissues, and 10 normal cervical tissues samples were used in this study. The expressions of DJ-1 in cervical carcinoma tissue, para-carcinoma tissue, and normal tissue samples were investigated by immunohistochemistry. DJ-1 expression in Hela cells was also investigated by quantitative reverse transcription-polymerase chain reaction (RT-PCR) and Western blot. DJ-1 was interfered and transfected with siRNA, then cell viability and apoptosis were assayed by MTT and flow cytometry, respectively. Additionally, the expressions of phosphatase and tensin homolog (PTEN), AKT, and phospho-AKT (P-AKT) were detected. Results Immunohistochemistry results showed that DJ-1 was highly expressed in cervical carcinoma tissues. In Hela cells, the expression of DJ-1 was significantly higher than that in normal controls (P<0.05). When cells were treated with DJ-1 siRNA, the cell viability decreased significantly (P<0.05), and the percentage of apoptosis cells increased significantly (P<0.05). In addition, the expressions of PTEN and AKT were significantly higher in the DJ-1 siRNA treatment group than those in the control group (P<0.05). The expression of p-AKT was significantly lower in the DJ-1 siRNA treatment group than in the control group and the DJ-1 over-expression group (P<0.05). Conclusions The aberrant up-regulation of DJ-1 expression might be an important step in the pathogenesis of cervical carcinoma.
Collapse
Affiliation(s)
- Han Wang
- Department of Pathology, Ankang Hospital of Traditional Chinese Medicine, Ankang, Shaanxi, China (mainland)
| | - Weiwei Gao
- Department of Obstetrics and Gynecology, Ankang Hospital of Traditional Chinese Medicine, Ankang, Shaanxi, China (mainland)
| |
Collapse
|
20
|
Pinto-Leite R, Arantes-Rodrigues R, Sousa N, Oliveira PA, Santos L. mTOR inhibitors in urinary bladder cancer. Tumour Biol 2016; 37:11541-11551. [PMID: 27235118 DOI: 10.1007/s13277-016-5083-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Accepted: 05/15/2016] [Indexed: 02/07/2023] Open
Abstract
Despite the great scientific advances that have been made in cancer treatment, there is still much to do, particularly with regard to urinary bladder cancer. Some of the drugs used in urinary bladder cancer treatment have been in use for more than 30 years and show reduced effectiveness and high recurrence rates. There have been several attempts to find new and more effective drugs, to be used alone or in combination with the drugs already in use, in order to overcome this situation.The biologically important mammalian target of rapamycin (mTOR) pathway is altered in cancer and mTOR inhibitors have raised many expectations as potentially important anticancer drugs. In this article, the authors will review the mTOR pathway and present their experiences of the use of some mTOR inhibitors, sirolimus, everolimus and temsirolimus, in isolation and in conjunction with non-mTOR inhibitors cisplatin and gemcitabine, on urinary bladder tumour cell lines. The non-muscle-invasive cell line, 5637, is the only one that exhibits a small alteration in the mTOR and AKT phosphorylation after rapalogs exposure. Also, there was a small inhibition of cell proliferation. With gemcitabine plus everolimus or temsirolimus, the results were encouraging as a more effective response was noticed with both combinations, especially in the 5637 and T24 cell lines. Cisplatin associated with everolimus or temsirolimus also gave promising results, as an antiproliferative effect was observed when the drugs were associated, in particular on the 5637 and HT1376 cell lines. Everolimus or temsirolimus in conjunction with gemcitabine or cisplatin could have an important role to play in urinary bladder cancer treatment, depending on the tumour grading.
Collapse
Affiliation(s)
- R Pinto-Leite
- Genetic Service, Cytogenetic Laboratory, Hospital Center of Trás-os-Montes and Alto Douro, Vila Real, Portugal. .,Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Porto, Portugal.
| | - R Arantes-Rodrigues
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences (CITAB), University of Trás-os-Montes and Alto Douro, Vila Real, Portugal.,QOPNA, Mass Spectrometry Center, Department of Chemistry, University of Aveiro, Aveiro, Portugal.,Institute for Research and Innovation in Health (I3S), Porto, Portugal
| | - Nuno Sousa
- Health School, University Fernando Pessoa, Porto, Portugal
| | - P A Oliveira
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Porto, Portugal
| | - L Santos
- Experimental Pathology and Therapeutics Group, Portuguese Institute of Oncology, Porto, Portugal.,Health School, University Fernando Pessoa, Porto, Portugal.,Medical Oncology Department, Portuguese Institute of Oncology, Porto, Portugal
| |
Collapse
|
21
|
Xie W, Qin W, Kang Y, Zhou Z, Qin A. MicroRNA-340 Inhibits Tumor Cell Proliferation and Induces Apoptosis in Endometrial Carcinoma Cell Line RL 95-2. Med Sci Monit 2016; 22:1540-6. [PMID: 27153225 PMCID: PMC4917329 DOI: 10.12659/msm.898121] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
BACKGROUND The purpose of our study was to investigate the functional role of microRNA-340 (miR-340) in endometrial carcinoma (EC). MATERIAL AND METHODS Human EC cell line RL 95-2 was transfected with miR-340 mimics, inhibitors, or controls. After 48 h of transfection, the cell viability was determined by 3-(4, 5-dimethyl-2- thiazolyl)-2, 5-diphenyl -2-H-tetrazolium bromide (MTT) assay. The BrdU assay and apoptosis assay were performed to determine the effects of miR-340 mimics or inhibitors on cell proliferation and apoptosis, respectively. The underlying mechanisms involved in cell proliferation and apoptosis were explored by measuring the protein levels of cell cycle regulators (p27 kinase inhibition protein (KIP) 1 and p21) and apoptosis-related factors (B-cell lymphoma-2 (Bcl-2), Bax, pro-Caspase 3, and active-Caspase-3). RESULTS Overexpression of miR-340 significantly inhibited the cell viability (P<0.05) and cell proliferation (P<0.01) of RL 95-2 cells compared with the control group, but increased the apoptosis (P<0.01). However, suppression of miR-340 had opposite results. Moreover, the protein levels of p27 KIP1, Bax, pro-Caspase 3, and active-Caspase-3 were significantly increased by overexpression of miR-340 but were statistically decreased by suppression of miR-340. Contrary results were found in the protein levels of Bcl-2. However, no significant differences were found in p21 expression. CONCLUSIONS MiRNA-340 acts as an anti-oncogene in EC cell line RL 95-2 by inhibition of tumor cell proliferation and induction of apoptosis.
Collapse
Affiliation(s)
- Wei Xie
- Department of Reproductive Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Wen Qin
- Department of Pathology, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Yalin Kang
- , Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Ziyan Zhou
- , Guangxi Medical University, Nanning, Guangxi, China (mainland)
| | - Aiping Qin
- Department of Reproductive Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China (mainland)
| |
Collapse
|