1
|
The role of BMI1 in endometrial cancer and other cancers. Gene 2023; 856:147129. [PMID: 36563713 DOI: 10.1016/j.gene.2022.147129] [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: 10/08/2022] [Revised: 11/11/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
Endometrial cancer (EC) is the third leading gynecological malignancy, and its treatment remains challenging. B cell-specific Moloney murine leukemia virus integration site-1 (BMI1) is one of the core members of the polycomb group (PcG) family, which plays a promoting role in the occurrence and development of various tumors. Notably, BMI1 has been found to be frequently upregulated in endometrial cancer (EC) and promote the occurrence of EC through promoting epithelial-mesenchymal transition (EMT) and AKT/PI3K pathways. This review summarizes the structure and upstream regulatory mechanisms of BMI1 and its role in EC. In addition, we focused on the role of BMI1 in chemoradiotherapy resistance and summarized the current drugs that target BMI1.
Collapse
|
2
|
Poonaki E, Ariakia F, Jalili-Nik M, Shafiee Ardestani M, Tondro G, Samini F, Ghasemi S, Sahab-Negah S, Gorji A. Targeting BMI-1 with PLGA–PEG nanoparticle-containing PTC209 modulates the behavior of human glioblastoma stem cells and cancer cells. Cancer Nanotechnol 2021. [DOI: 10.1186/s12645-021-00078-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AbstractDespite advances in glioblastoma (GBM) treatments, current approaches have failed to improve the overall survival of patients. The oncogene BMI-1, a core member of the polycomb group proteins, is a potential novel therapeutic target for GBM. To enhance the efficacy and reduce the toxicity, PTC209, a BMI-1 inhibitor, was loaded into a PLGA–PEG nanoparticle conjugated with CD133 antibody (Nano-PTC209) and its effect on the behavior of human GBM stem-like cells (GSCs) and the human glioblastoma cell line (U87MG) was assessed. Nano-PTC209 has a diameter of ~ 75 nm with efficient drug loading and controlled release. The IC50 values of Nano-PTC209 for GSCs and U87MG cells were considerably lower than PTC209. Nano-PTC209 significantly decreased the viability of both GSCs and U87MG cells in a dose-dependent manner and caused a significant enhancement of apoptosis and p53 levels as well as inhibition of AKT and JNK signaling pathways. Furthermore, Nano-PTC209 significantly inhibited the migration ability, decreased the activity of metalloproteinase-2 and -9, and increased the generation of reactive oxygen species in both GSCs and U87MG cells. Our data indicate that PLGA–PEG nanoparticle conjugated with CD133 antibody could be an ideal nanocarrier to deliver PTC209 and effectively target BMI-1 for potential approaches in the treatment of GBM.
Collapse
|
3
|
Li K, Zhang Q, Niu D, Xing H. Mining miRNAs' Expressions in Glioma Based on GEO Database and Their Effects on Biological Functions. BIOMED RESEARCH INTERNATIONAL 2020; 2020:5637864. [PMID: 33102581 PMCID: PMC7576330 DOI: 10.1155/2020/5637864] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 06/04/2020] [Indexed: 12/13/2022]
Abstract
PURPOSE To mine miR expression in glioma based on the Gene Expression Omnibus (GEO) database and to explore its effects on biological functions. METHODS Differentially expressed miRs in glioma-related chips were found out based on the GEO database. Fifty patients with glioma treated in our hospital from February 2012 to July 2013 (observation group, OG) and a further 50 healthy people undergoing physical examinations (control group, CG) were enrolled. miR-873-5p expression in serum and in U87, T98G, U251, LN-229, and HEK-293T cells was tested by qRT-PCR. T98G and U251 cells were transfected with miR-873-5p-mimics and miR-NC sequences. The expression in the two cells was also tested by qRT-PCR. The proliferation, invasion, and apoptosis of the transfected cells were, respectively, tested by MTT assay, Transwell, and flow cytometry. The patients were followed up for 5 years to observe their survival. RESULTS miR-873-5p expression in OG was remarkably higher than that in CG (p < 0.001). miR-873-5p was closely correlated with the tumor diameter, lymph node metastasis, and TNM staging of the patients (p < 0.05). According to the plotted receiver operating characteristic (ROC) curves, the areas under the curves (AUCs) of miR-873-5p for diagnosing the disease, tumor diameter, lymph node metastasis, and TNM staging were 0.842, 0.706, 0.865, and 0.793, respectively. The 5-year and recurrence-free survival rates in the low expression group were lower than those in the high expression group. According to multivariate Cox regression analysis, tumor diameter, lymph node metastasis, and miR-873-5p were independent prognostic factors for the disease. After transfection, compared with those in the miR-NC group, T98G and U251 cells in the miR-873-5p-mimic group had remarkably higher miR-873-5p expression (p < 0.05), remarkably lower proliferation and invasion rates (p < 0.05), and a remarkably higher apoptotic rate (p < 0.05). CONCLUSIONS miR-873-5p can inhibit glioma cells to proliferate and invade, and promote their apoptosis, so it is expected to become a potential diagnostic index and therapeutic target for glioma.
Collapse
Affiliation(s)
- Ke Li
- Department of Neurosurgery, Binzhou Medical University Hospital, Binzhou 256603, China
| | - Qi Zhang
- Department of Neurosurgery, Binzhou Medical University Hospital, Binzhou 256603, China
| | - Duan Niu
- Department of Pediatrics, Binchengqu Shili Hospital, Binzhou 256600, China
| | - Hailong Xing
- Department of Neurosurgery, Binzhou Medical University Hospital, Binzhou 256603, China
| |
Collapse
|
4
|
Yan R, Cui F, Dong L, Liu Y, Chen X, Fan R. Repression of PCGF1 Decreases the Proliferation of Glioblastoma Cells in Association with Inactivation of c-Myc Signaling Pathway. Onco Targets Ther 2020; 13:253-261. [PMID: 32021272 PMCID: PMC6957096 DOI: 10.2147/ott.s234517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Accepted: 12/12/2019] [Indexed: 12/31/2022] Open
Abstract
Purpose Glioblastoma (GBM) is the most common primary brain tumor with a poor therapeutic outcome. Polycomb group factor 1 (PCGF1), a member of the PcG (Polycomb group) family, is highly expressed in the developing nervous system of mice. However, the function and the mechanism of PCGF1 in GBM proliferation still remain unclear. Methods Knockdown of PCGF1 was performed in U87 GBM cell by shRNA strategy via lentivirus vector. MTT assay, colony formation assays, and flow cytometry were used to measure the properties of cell proliferation and cell cycle distribution, respectively. GeneChip analysis was performed to identify the downstream effector molecules. Rescue assay was constructed to verify the screening results. Results We first found that knockdown of PCGF1 led to the inhibition of U87 cells proliferation and decreased colony formation ability. The data from GeneChip expression profiling and Ingenuity Pathway Analysis (IPA) indicated that many of the altered gene cells are associated with the cell proliferation control pathways. We have further confirmed the suppression of AKT/GSK3β/c-Myc/cyclinD1 expressions by Western blotting analysis. The over-expression of c-Myc could partly restore the attenuated proliferation ability caused by knockdown of PCGF1. Conclusion All the above evidences suggested that PCGF1 might be closely associated with tumorigenesis and progression of glioblastoma (GBM), in which process the oncoprotein c-Myc may participate. PCGF1 could thus be a potential therapeutic target for the treatment of glioblastoma (GBM).
Collapse
Affiliation(s)
- Rui Yan
- Department of Thoracic Surgery, The Third Medical Center, Chinese People's Liberation Army General Hospital, Beijing 100039, People's Republic of China
| | - Fengmei Cui
- Department of Radiation Medicine, School of Radiation Medicine and Protection, Medical College of Soochow University, Suzhou 215123, People's Republic of China
| | - Lijin Dong
- Editorial Department, Logistic University of Chinese People's Armed Police Force, Tianjin 300309, People's Republic of China
| | - Yong Liu
- Central Laboratory, Xi Qing Hospital, Tianjin 300380, People's Republic of China
| | - Xuewei Chen
- Department of Operational Medicine, Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, People's Republic of China
| | - Rong Fan
- Central Laboratory, Xi Qing Hospital, Tianjin 300380, People's Republic of China
| |
Collapse
|
5
|
Xu R, Han Y. Long non-coding RNA FOXF1 adjacent non-coding developmental regulatory RNA inhibits growth and chemotherapy resistance in non-small cell lung cancer. Arch Med Sci 2019; 15:1539-1546. [PMID: 31749883 PMCID: PMC6855145 DOI: 10.5114/aoms.2019.86707] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2017] [Accepted: 07/04/2017] [Indexed: 12/21/2022] Open
Abstract
INTRODUCTION Lung cancer is one of the most common malignant neoplasms around the globe. Its most common type is non-small cell lung cancer (NSCLC). The FOXF1 adjacent non-coding developmental regulatory RNA (FENDRR) gene is an lncRNA which has been reported to show low expression and a tumor suppressor role in NSCLC. MATERIAL AND METHODS The expression of FENDRR in NSCLC patients' tissues and cell line was detected by quantitative real-time PCR. MTT assay was used to detect cell proliferation and chemotherapy resistance. Cell apoptosis was measured by flow cytometry. RESULTS The expression of FENDRR was low in NSCLC tissues and cells in contrast to control tissues and cells, and low FENDRR expression correlated with high TNM stages and poor differentiation of NSCLC, and could be a promising prognostic factor for NSCLC. FENDRR enhancement could inhibit the proliferation ability and advance cell apoptosis of A549 cells. The expression of FENDRR in NSCLC tissues and cells insensitive to cisplatin was much lower than that in NSCLC tissues and cells sensitive to cisplatin. The chemotherapy resistance to cisplatin of A549/DDP cells was depressed by FENDRR enhancement, and IC50 for cisplatin presented a conspicuous depression. FENDRR up-regulation inhibited cell viability of A549/DDP cells under treatment with 5 µg/ml DDP. TCGA Pan-Cancer (PANCAN) showed that the expression of FENDRR was negatively correlated with the expression of ABCC10 in lung cancer, and our western blot found that FENDRR up-regulation inhibited the expression of ABCC10 in A549/DDP cells. CONCLUSIONS LncRNA FENDRR has low expression in NSCLC and functions as a potential tumor-suppressing gene to inhibit growth and chemotherapy resistance of NSCLC cells.
Collapse
Affiliation(s)
- Ran Xu
- Department of Thoracic Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| | - Yun Han
- Department of Thoracic Surgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
| |
Collapse
|
6
|
Yang H, Jin L, Sun X. A thirteen‑gene set efficiently predicts the prognosis of glioblastoma. Mol Med Rep 2019; 19:1613-1621. [PMID: 30628650 PMCID: PMC6390043 DOI: 10.3892/mmr.2019.9801] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 09/06/2018] [Indexed: 12/13/2022] Open
Abstract
Glioblastoma multiforme (GBM) is the most common type of brain cancer; it usually recurs and patients have a short survival time. The present study aimed to construct a gene expression classifier and to screen key genes associated with GBM prognosis. GSE7696 microarray data set included samples from 10 recurrent GBM tissues, 70 primary GBM tissues and 4 normal brain tissues. Seed genes were identified by the 'survival' package in R and subjected to pathway enrichment analysis. Prognostic genes were selected from the seed genes using the 'rbsurv' package in R, unsupervised hierarchical clustering, survival analysis and enrichment analysis. Multivariate survival analysis was performed for the prognostic genes, and the GBM data set from The Cancer Genome Atlas database was utilized to validate the prognostic genes. Of the 1,785 seed genes analyzed, 13 prognostic feature genes, including collagen type XXVIII α1 chain (COL28A1), PDS5 cohesin‑associated factor A (PDS5A), zinc‑finger DHHC‑type containing 2 (ZDHHC2), zinc‑finger protein 24 (ZNF24), myosin VA (MYO5A) and myeloid/lymphoid or mixed‑lineage leukemia translocated to 4 (MLLT4), were identified. These genes performed well on sample classification and prognostic risk differentiation, and six pathways, including adherens junction, cyclic adenosine 3',5'‑monophosphate signaling and Ras signaling pathways, were enriched for these feature genes. The high‑risk group was slightly older compared with the low‑risk group. The validation data set confirmed the prognostic value of the 13 feature genes for GBM; of these, COL28A1, PDS5A, ZDHHC2, ZNF24, MYO5A and MLLT4 may be crucial. These results may aid the understanding of the pathogenesis of GBM and provide important clues for the development of novel diagnostic markers or therapeutic targets.
Collapse
Affiliation(s)
- Huyin Yang
- Department of Neurosurgery, Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Luhao Jin
- Department of Neurosurgery, Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| | - Xiaoyang Sun
- Department of Neurosurgery, Affiliated Huaian No. 1 People's Hospital of Nanjing Medical University, Huai'an, Jiangsu 223300, P.R. China
| |
Collapse
|
7
|
Chen P, Liu H, Hou A, Sun X, Li B, Niu J, Hu L. Prognostic Significance of Zinc Finger E-Box-Binding Homeobox Family in Glioblastoma. Med Sci Monit 2018; 24:1145-1151. [PMID: 29476046 PMCID: PMC5834914 DOI: 10.12659/msm.905902] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background Epithelial-mesenchymal transition (EMT) is an essential progress for tumor cell invasion to both epithelial and non-epithelial cancers, and zinc finger E-box-binding homeobox 1/2 (ZEB1/2) is a well-known promoter of EMT. In glioma cell lines, both ZEB1 and ZEB2 have been demonstrated to facilitate cancer cell proliferation and invasion with experiments in vitro. However, the clinical significance of ZEB1 and ZEB2 in glioblastoma (GBM) is still controversial. Material/Methods We detected the expression of ZEB1 and ZEB2 in 91 cases of GBM with immunohistochemistry and investigated the correlation between clinicopathological factors and ZEB family expression with Fisher test. By univariate analysis with Kaplan-Meier test, we explored the prognostic significance of ZEB1/2 expression and the clinicopathological factors in GBM. By multivariate analysis with the Cox regression model, we identified the independent prognostic factors in GBM. Results The percentages of ZEB1 high expression and ZEB2 high expression were 31.9% (29/91) and 41.9% (36/91), respectively. High expression of ZEB2 was significantly associated with lower survival rate of GBM patients (P=0.001). ZEB2, lower KPS score (P=0.004), gross total resection (P<0.001) and higher Ki67 percentage (P=0.001) were notably correlated to worse prognosis of GBM. With multivariate analysis, high expression of ZEB2 was demonstrated to be an independent prognostic factor indicating unfavorable prognosis of GBM (P=0.001, HR=3.86, and 95%CI=1.61–9.23). Conclusions High expression of ZEB2 is an independent prognostic factor predicting unfavorable prognosis of GBM, indicating that ZEB2 or its downstream proteins may be potential drug targets of GBM therapy.
Collapse
Affiliation(s)
- Peng Chen
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Hongxin Liu
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Aiwu Hou
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Xibo Sun
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Bingxuan Li
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Jianyi Niu
- Department of Neurology, Yidu Central Hospital of Weifang, Weifang, Shandong, China (mainland)
| | - Lingling Hu
- Department of Gynecology, Linyi People's Hospital, Linyi, Shandong, China (mainland)
| |
Collapse
|
8
|
Yang J, Fan B, Zhao Y, Fang J. MicroRNA-202 inhibits cell proliferation, migration and invasion of glioma by directly targeting metadherin. Oncol Rep 2017; 38:1670-1678. [PMID: 28714009 DOI: 10.3892/or.2017.5815] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 06/02/2017] [Indexed: 11/06/2022] Open
Abstract
Glioma is the most common and aggressive type of primary malignant brain tumour. Increasing evidence has revealed that microRNAs play important roles in multiple biological processes related to glioma occurrence, development, diagnosis, treatment and prognosis. MicroRNA-202 (miR-202) has been studied in several types of human cancer, whereas the biological roles of miR-202 in glioma remain unknown. The present study, aimed to investigate the expression, clinical significance and biological roles of miR-202 in glioma, as well as its underlying molecular mechanism. We found that miR-202 was significantly downregulated in glioma tissues and cell lines. Low miR-202 expression was associated with Karnofsky performance status (KPS) score and World Health Organization (WHO) grade of glioma patients. Functional assays revealed that ectopic expression of miR-202 inhibited cell proliferation, migration and invasion of glioma. In addition, metadherin (MTDH) was identified as a direct target gene of miR-202 in glioma through bioinformatic analysis, luciferase reporter assay, reverse transcription-quantitative polymerase chain reaction (RT-qPCR) and western blotting. Furthermore, MTDH expression was upregulated and negatively correlated with miR-202 expression in clinical glioma tissues. MTDH knockdown had similar roles to miR-202 overexpression in glioma cells. Rescue experiments revealed that upregulation of MTDH reversed the suppression of glioma cell growth and metastasis by miR-202. Moreover, miR-202 impaired the PI3K/Akt and Wnt/β-catenin pathways. These results highlight the tumour-suppressive effect of miR-202 in glioma, thereby suggesting that miR-202 may be a potential therapeutic target for the treatment of patients with this malignancy.
Collapse
Affiliation(s)
- Jinsheng Yang
- Department of Neurosurgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| | - Bo Fan
- Department of Neurosurgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| | - Yachao Zhao
- Department of Neurosurgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| | - Junchao Fang
- Department of Neurosurgery, The First Affiliated Hospital of Henan University of Science and Technology, Luoyang, Henan 471003, P.R. China
| |
Collapse
|
9
|
Patel N, Garikapati KR, Pandita RK, Singh DK, Pandita TK, Bhadra U, Bhadra MP. miR-15a/miR-16 down-regulates BMI1, impacting Ub-H2A mediated DNA repair and breast cancer cell sensitivity to doxorubicin. Sci Rep 2017; 7:4263. [PMID: 28655885 PMCID: PMC5487337 DOI: 10.1038/s41598-017-02800-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Accepted: 04/18/2017] [Indexed: 12/18/2022] Open
Abstract
The B-lymphoma Moloney murine leukemia virus insertion region-1 protein (BMI1) acts as an oncogene in various cancers, including breast cancer. Recent evidence suggests that BMI1 is rapidly recruited to sites of DNA double strand breaks where it facilitates histone H2A ubiquitination and DNA double strand break repair by homologous recombination. Here we show that miR-15a and miR-16 expressionis decreased during the initial period after DNA damage where it would otherwise down-regulate BMI1, impairing DNA repair. Elevated miR-15a and miR-16 levels down-regulated BMI1 and other polycomb group proteins like RING1A, RING1B, EZH2 and also altered the expression of proteins associated with the BMI1 dependent ubiquitination pathway. Antagonizing the expression of miR-15a and miR-16, enhanced BMI1 protein levels and increased DNA repair. Further, overexpression of miR-15a and miR-16 sensitized breast cancer cells to DNA damage induced by the chemotherapeutic drug doxorubicin. Our results suggest that miR-15a and miR-16 mediate the down-regulation of BMI1, which impedes DNA repair while elevated levels can sensitize breast cancer cells to doxorubicin leading to apoptotic cell death. This data identifies a new target for manipulating DNA damage response that could impact the development of improved therapeutics for breast cancer.
Collapse
Affiliation(s)
- Nibedita Patel
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Telangana State, 500007, India
| | - Koteswara Rao Garikapati
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Telangana State, 500007, India.,Academy of Scientific and Innovative Research (AcSIR), Training and Development Complex, CSIR Campus, CSIR Road, Taramani, Chennai, 600 113, India
| | - Raj K Pandita
- Department of Radiation Oncology, Weill Cornell Medical College, The Methodist Hospital Research Institute, Houston, TX, 77030, USA
| | - Dharmendra Kumar Singh
- Department of Radiation Oncology, Weill Cornell Medical College, The Methodist Hospital Research Institute, Houston, TX, 77030, USA
| | - Tej K Pandita
- Department of Radiation Oncology, Weill Cornell Medical College, The Methodist Hospital Research Institute, Houston, TX, 77030, USA
| | - Utpal Bhadra
- Gene Silencing Group, Centre for Cellular and Molecular Biology, Hyderabad, Telangana State, 500007, India
| | - Manika Pal Bhadra
- Centre for Chemical Biology, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, Telangana State, 500007, India.
| |
Collapse
|
10
|
Connelly KE, Martin EC, Dykhuizen EC. CBX Chromodomain Inhibition Enhances Chemotherapy Response in Glioblastoma Multiforme. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2016; 89:431-440. [PMID: 28018136 PMCID: PMC5168823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Glioblastoma multiforme (GBM) lacks effective therapeutic options leaving patients with a survival time of approximately one year. Recently, the alteration of chromatin modulators has been implicated in the pathogenesis and chemoresistance of numerous cancers; in particular, the Polycomb Group Proteins have been shown to play a role in glioblastoma progression and maintenance [1-5]. In this study, we aimed to identify drug combinations that decrease GBM cell viability by combining small molecule inhibitors against the Polycomb family with two standard chemotherapies. We identified dual inhibition of the CBX chromodomain with doxorubicin as a novel therapeutic strategy. While treatment with chromodomain inhibitor is non-toxic to cells alone, it dramatically increased the toxicity of standard chemotherapy drugs. We further validated an increase in DNA damage resulting in a G2/M block and subsequent apoptosis using the dual inhibitor treatment.
Collapse
Affiliation(s)
| | | | - Emily C. Dykhuizen
- Purdue University, West Lafayette, IN,To whom all correspondence should be addressed: Emily C. Dykhuizen, 201 S. University, West Lafayette, IN 47906, , tel: 765-494-4706
| |
Collapse
|
11
|
miR-15a/miR-16 induces mitochondrial dependent apoptosis in breast cancer cells by suppressing oncogene BMI1. Life Sci 2016; 164:60-70. [DOI: 10.1016/j.lfs.2016.08.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Revised: 08/25/2016] [Accepted: 08/29/2016] [Indexed: 11/22/2022]
|
12
|
Saboor-Maleki S, Rassouli FB, Matin MM, Iranshahi M. Auraptene Attenuates Malignant Properties of Esophageal Stem-Like Cancer Cells. Technol Cancer Res Treat 2016; 16:519-527. [PMID: 27207438 DOI: 10.1177/1533034616650119] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The high incidence of esophageal squamous cell carcinoma has been reported in selected ethnic populations including North of Iran. Low survival rate of esophageal carcinoma is partially due to the presence of stem-like cancer cells with chemotherapy resistance. In the current study, we aimed to determine the effects of auraptene, an interesting dietary coumarin with various biological activities, on malignant properties of stem-like esophageal squamous cell carcinoma, in terms of sensitivity to anticancer drugs and expression of specific markers. To do so, the half maximal inhibitory concentration values of auraptene, cisplatin, paclitaxel, and 5-fluorouracil were determined on esophageal carcinoma cells (KYSE30 cell line). After administrating combinatorial treatments, including nontoxic concentrations of auraptene + cisplatin, paclitaxel, or 5-fluorouracil, sensitivity of cells to chemical drugs and also induced apoptosis were assessed. In addition, quantitative real-time polymerase chain reaction was used to study changes in the expression of tumor suppressor proteins 53 and 21 ( P53 and P21), cluster of differentiation 44 ( CD44), and B cell-specific Moloney murine leukemia virus integration site 1 ( BMI-1) upon treatments. Results of thiazolyl blue assay revealed that auraptene significantly ( P < .05) increased toxicity of cisplatin, paclitaxel, and 5-fluorouracil in KYSE30 cells, specifically 72 hours after treatment. Conducting an apoptosis assay using flow cytometry also confirmed the synergic effects of auraptene. Results of quantitative real-time polymerase chain reaction revealed significant ( P < .05) upregulation of P53 and P21 upon combinatorial treatments and also downregulation of CD44 and BMI-1 after auraptene administration. Current study provided evidence, for the first time, that auraptene attenuates the properties of esophageal stem-like cancer cells through enhancing sensitivity to chemical agents and reducing the expression of CD44 and BMI-1 markers.
Collapse
Affiliation(s)
- Saffiyeh Saboor-Maleki
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Fatemeh B Rassouli
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.,2 Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Maryam M Matin
- 1 Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran.,2 Cell and Molecular Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Mehrdad Iranshahi
- 3 Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| |
Collapse
|
13
|
Silence of long noncoding RNA UCA1 inhibits malignant proliferation and chemotherapy resistance to adriamycin in gastric cancer. Cancer Chemother Pharmacol 2016; 77:1061-7. [DOI: 10.1007/s00280-016-3029-3] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/30/2016] [Indexed: 12/24/2022]
|
14
|
Shang C, Hong Y, Guo Y, Xue YX. Mir-338-3p Inhibits Malignant Biological Behaviors of Glioma Cells by Targeting MACC1 Gene. Med Sci Monit 2016; 22:710-6. [PMID: 26936749 PMCID: PMC4780270 DOI: 10.12659/msm.897055] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background Human brain glioma is the most common endocranial tumor; its mortality and morbidity are very high. The objective of this study was to determine whether miR-338-3p can regulate malignant biological behaviors of glioma cells by targeted silencing of MACC1. Material/Methods The expression of miR-338-3p was detected by quantitative real-time PCR in brain glioma tissues and cell lines. Bioinformatics software was used to predict some potential target genes of miR-338-3p. Luciferase activities assay was used to verify the combination between target genes and miR-338-3p. And MACC1 protein expression was detected by Western blot. The apoptosis and proliferation ability were analyzed by MTT and flow cytometry assay. Results Compared with normal brain tissues and cells, miR-338-3p in glioma tissues and cell lines was confirmed to be expressed at low levels, and down-regulation of miR-338-3p tended to be correlated with worse histological grade. Up-regulation of miR-338-3p promoted apoptosis and sharply inhibited cell proliferation ability of U251 and U87 cells. The luciferase activities assay, biotin-avidin pull-down assay, and western blot analysis verified that MACC1 was a specific target gene of miR-338-3p. Subsequent experiments found that up-regulation of MACC1 significantly inhibited the apoptosis and increased the cell proliferation ability of U251 and U87 cells. The regulation effects of miR-338-3p on malignant biological behaviors of glioma cells can be partly reversed by up-regulation of MACC1. Conclusions Down-regulation of miR-338-3p was an independent prognostic biomarker associated with poor prognosis in glioma patients; miR-338-3p acted as a tumor-suppressing gene whose silencing can inhibit malignant biological behaviors of glioma cells. MACC1 was a specific target gene of miR-338-3p, which regulates malignant biological behaviors of glioma cells partly through directly silencing MACC1 expression.
Collapse
Affiliation(s)
- Chao Shang
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning, China (mainland)
| | - Yang Hong
- Department of Neurosurgery, Shengjing Hospital, China Medical University, Shenyang, Liaoning, China (mainland)
| | - Yan Guo
- Department of Central Laboratory, School of Stomatology, China Medical University, Shenyang, Liaoning, China (mainland)
| | - Yi-xue Xue
- Department of Neurobiology, College of Basic Medicine, China Medical University, Shenyang, Liaoning, China (mainland)
| |
Collapse
|
15
|
Bai X, Ouyang L, Li BO, Zhou Y, Wen X. Expression of B cell-specific Moloney murine leukemia virus integration site 1 in vulvar squamous cell carcinoma and its effect on the biological behavior of A-431 cells. Oncol Lett 2016; 10:3369-3376. [PMID: 26788137 PMCID: PMC4665225 DOI: 10.3892/ol.2015.3754] [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: 12/03/2014] [Accepted: 07/30/2015] [Indexed: 12/03/2022] Open
Abstract
The aim of the present study was to investigate the expression of B cell-specific Moloney murine leukemia virus integration site 1 (BMI-1) in vulvar squamous cell carcinoma (VSCC) and vulvar intraepithelial neoplasia (VIN). Furthermore, the present study investigated the effects of BMI-1 expression on the biological behavior of A-431 human epidermoid carcinoma cells. BMI-1 expression in human VSCC and VIN tissues was detected using immunohistochemistry. Subsequently, BMI-1 expression was silenced in A-431 cells using small interfering RNA (siRNA), and BMI-1 expression was detected using reverse transcription-quantitative polymerase chain reaction and western blotting. The effects of BMI-1 silencing on cell proliferation, apoptosis and invasive ability were determined using an MTT assay, Annexin V-fluorescein isothiocyanate/propidium iodide double-labeling experiment and Transwell assay, respectively. The expression rate of BMI-1 in normal vulvar, VIN and VSCC tissues was 0.0, 25.0 and 68.0% respectively, demonstrating an increasing trend in the severity of the disease. BMI-1 overexpression was found not to correlate with age, pathological stage, lymph node metastasis or degree of differentiation (P>0.05). BMI-1 siRNA transfection effectively inhibited BMI-1 messenger RNA and protein expression in A-431 cells. The mean rate of apoptosis promotion and proliferation inhibition in the most effectively silenced group were 20.19 and 46.82%, respectively, which was significantly higher than that of the cells in the blank and control siRNA groups (P<0.05). The number of invading cells was decreased in the most effectively silenced group compared with that of the blank and control siRNA groups. Abnormal expression of BMI-1 was also detected in VIN and VSCC tissues, and targeting of BMI-1 with siRNA was able to successfully silence BMI-1 expression in A-431 cells. Silencing of BMI-1 promoted apoptosis and inhibited the invasive abilities of A-431 cells in vitro.
Collapse
Affiliation(s)
- Xueli Bai
- Department of Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Ling Ouyang
- Department of Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - B O Li
- Department of Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yang Zhou
- Department of Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Xin Wen
- Department of Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, P.R. China
| |
Collapse
|
16
|
Long noncoding RNA HOTAIR is a prognostic biomarker and inhibits chemosensitivity to doxorubicin in bladder transitional cell carcinoma. Cancer Chemother Pharmacol 2016; 77:507-13. [DOI: 10.1007/s00280-016-2964-3] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 01/05/2016] [Indexed: 01/06/2023]
|