Abstract:
BACKGROUND:DNA methylation has been widely used in classification, early diagnosis, therapy and prediction of metastasis as well as recurrence of cervical cancer. DNMT methyltransferase 1 (DNMT1), which plays a significant role in maintaining DNA methylation status and regulating the expression of tumor suppressor genes. The aim of this research was to investigate the relationship between DNMT1 and abnormal methylation of tumor suppressor genes and malignant phenotype in cervical cancer. METHODS:Levels of DNMT1 mRNA and protein were detected using qPCR and Western blot, respectively. Cell proliferation was analyzed by MTT and apoptosis was performed by Annexin V-FITC/PI double staining flow cytometry, respectively. MeDIP-qPCR and qPCR were performed to measure demethylation status and mRNA re-expression level of 7 tumor-suppressor genes (CCNA1, CHFR, FHIT, PAX1, PTEN, SFRP4, TSLC1) in Hela and Siha cells after silencing DNMT1. RESULTS:The average expression levels of DNMT1 mRNA and protein in Hela and Siha cells were decreased significantly compared with control group. The flow cytometry and MTT results showed that Hela and Siha cells apoptosis rates and cell viabilities were 19.4 ± 2.90%, 25.7 ± 3.92% as well as 86.7 ± 3.12%, 84.16 ± 2.67% respectively 48 h after transfection (P < 0.01). Furthermore, the promoter methylation of five tumor suppressor genes was decreased with the increased mRNA expression after silencing DNMT1, whereas there were no significant changes in PTEN and FHIT genes in Hela cells, and CHFR and FHIT genes in Siha cells. CONCLUSIONS:Our experimental results demonstrate that methylation status of DNMT1 can influence several important tumor suppressor genes activity in cervical tumorigenesis and may have the potential to become an effective target for treatment of cervical cancer.
journal_name
J Exp Clin Cancer Resjournal_title
Journal of experimental & clinical cancer research : CRauthors
Zhang Y,Chen FQ,Sun YH,Zhou SY,Li TY,Chen Rdoi
10.1186/1756-9966-30-98subject
Has Abstractpub_date
2011-10-17 00:00:00pages
98eissn
0392-9078issn
1756-9966pii
1756-9966-30-98journal_volume
30pub_type
杂志文章abstract::Glutathione S-transferases (GSTs) are a group of enzymes involved in the detoxification process of carcinogens and other substances. The genes encoding isoenzymes M1 and T1 have "null" alleles, which are polymorphic in humans. Our purpose was to examine whether the GSTM1 and GSTT1 homozygous null genotypes have an imp...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2004-09-01 00:00:00
abstract::KLF6 (Zf9, COPEB), an ubiquitous transcription factor, maps to chromosome 10p. Recently, KLF6 was found to have a more generalized role in tumorigenesis as a candidate tumor suppressor gene for some tumors. However, results from other published studies seem not to be in agreement with data from previous studies. Gene-...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2007-03-01 00:00:00
abstract:BACKGROUND:Chemokine-like factor (CKLF)-like MARVEL transmembrane domain-containing family (CMTM) is a gene family involved in multiple malignancies. CMTM4 is a member of this family and is located at chromosome 16q22.1, a locus that harbours a number of tumour suppressor genes. It has been defined as a regulator of ce...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-015-0236-4
更新日期:2015-10-16 00:00:00
abstract:BACKGROUND:Tumor metastasis is one of the main causes of the high mortality of hepatocellular carcinoma (HCC). E-Twenty Six variant gene 6 (ETV6) is a strong transcriptional repressor, associated with the development and progression of tumors. However, the exact role and underlying mechanism of ETV6 in HCC remain uncle...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-020-01559-1
更新日期:2020-04-23 00:00:00
abstract:BACKGROUND:Metastasis in breast cancer is a vital concern in treatment because most women with primary breast cancer have micrometastases to distant sites at diagnosis. As a member of the inhibitor of apoptosis protein (IAP) family, survivin has been proposed as an attractive target for new anticancer interventions. In...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-27-46
更新日期:2008-09-25 00:00:00
abstract:BACKGROUND:Cell cycle checkpoint regulation is crucial for prevention of tumor in mammalian cells. Cyclin-dependant kinase 4 (CDK4) is important in cell cycle regulation, as it controls the G1-S phase of the cell cycle. CDK4 has potential mitogenic properties through phosphorylation of target proteins. We aimed at iden...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-28-42
更新日期:2009-03-28 00:00:00
abstract:BACKGROUND:The aim of this study was to evaluate the potential association between single nucleotide polymorphisms related response to radiotherapy injury, such as genes related to DNA repair or enzymes involved in anti-oxidative activities. The paper aims to identify marker genes able to predict an increased risk of l...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 临床试验,杂志文章
doi:10.1186/1756-9966-31-7
更新日期:2012-01-24 00:00:00
abstract::The Turcot syndrome has been defined as the simultaneous presence of multiple polyposis of the colon and a malignant brain tumor. This association is supposed to be genetically transmitted, even though we still do not exactly know whether this occurs in a dominant or recessive way. The case of a 47-year-old man submit...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:1997-12-01 00:00:00
abstract::In the deletion mapping of chromosome (chr) 9 in head and neck lesions of the Indian patient population by microsatellite markers, we have identified four discrete areas (D1-D4) with high loss of heterozygosities (LOHs) viz. 9p24-p23 (D1), 9p22-p21 (D2), 9q11-q13 (D3) and 9q22.3 (D4) regions. The deletions in D2 and D...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 历史文章,杂志文章
doi:
更新日期:2003-06-01 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-32-101
更新日期:2013-12-08 00:00:00
abstract:BACKGROUND AND AIMS:Anti-HER-2 antibodies targeting distinct epitopes have different biological functions on cancer cells. In a previous study, we demonstrated that anti-HER-2 engineering antibody ChA21 was able to bind to subdomain I of HER-2 extracellular domain. In this study, The effects of ChA21 on growth and apop...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-29-23
更新日期:2010-03-10 00:00:00
abstract::The effect of malignant tumor growth on host's megakaryocytopoiesis and platelet production was studied in mice bearing transplantable Dalton's lymphoma. Tumor growth was paralleled by thrombocytosis, neutrophilia, and anemia. Platelet 51Cr half-life was normal but incorporation of 75Selenomethionine into circulating ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2000-12-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) ranks the most common primary liver malignancy and the third leading cause of tumor-related mortality worldwide. Unfortunately, despite advances in HCC treatment, less than 40% of HCC patients are eligible for potentially curative therapies. Recently, cancer immunotherapy has emerged as ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章,评审
doi:10.1186/s13046-019-1396-4
更新日期:2019-09-09 00:00:00
abstract:BACKGROUND:Angiopoietin-like protein 1 (ANGPTL1) has been reported to suppress migration and invasion in lung and breast cancer, acting as a novel tumor suppressor candidate. Nevertheless, its effects on colorectal cancer (CRC) remain poorly defined. In this study, we aim to demonstrate the biological function of ANGPT...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-017-0548-7
更新日期:2017-06-12 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-020-01786-6
更新日期:2021-01-04 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-020-01812-7
更新日期:2021-01-06 00:00:00
abstract:BACKGROUND:Poly C Binding Protein 1 (PCBP1) is an RNA-binding protein that binds and regulates translational activity of subsets of cellular mRNAs. Depletion of PCBP1 is implicated in various carcinomas, but the underlying mechanism in tumorigenesis remains elusive. METHODS:We performed a transcriptome-wide screen to ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-018-0840-1
更新日期:2018-08-07 00:00:00
abstract::Renal cell carcinoma, in a high percentage of patients, metastasizes early, sometimes mimicking other lesions. We present a case of an asymptomatic papillary renal cell carcinoma that presented neck metastases as the initial manifestation. The laterocervical and supraclavicular masses were considered consistent with n...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:1999-12-01 00:00:00
abstract::Survivin is a novel member of the inhibitor of apoptosis (IAP) protein family, and its aberrant expression in cancer cells has been shown to be associated with tumorigenesis, cancer progression, radiation/drug resistance and shorter patient survival. Survivin is also expressed in certain human adult tissues and cells,...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章,评审
doi:
更新日期:2006-09-01 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1186/1756-9966-33-30
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2005-06-01 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-28-26
更新日期:2009-02-25 00:00:00
abstract:BACKGROUND:Bladder cancer (BC) is a common urothelial malignancy, characterized by a high recurrence rate. The biology of bladder cancer is complex and needs to be deciphered. The latest evidence reveals the critical role of the non-coding RNAs, particularly microRNAs (miRNAs), as vital regulatory elements in cancer. ...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-019-1406-6
更新日期:2019-10-29 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:2000-06-01 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:1997-12-01 00:00:00
abstract:BACKGROUND:Hippo/YAP pathway is known to be important for development, growth and organogenesis, and dysregulation of this pathway leads to tumor progression.We and others find that YAP is up-regulated in human gliomas and associated with worse prognosis of patients. However, the role and mechanism of YAP in glioma pro...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-017-0606-1
更新日期:2017-09-29 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/s13046-018-0837-9
更新日期:2018-07-20 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-29-40
更新日期:2010-04-29 00:00:00
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journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:
更新日期:1999-12-01 00:00:00
abstract::RNA interference (RNAi) has been successfully applied in suppression of hepatic cancer genes. In hepatocelluar carcinoma cell, one methionine adenosyltransferase (MAT) isozyme, MATII was found to have two catalytic subunits which were encoded by MAT2A and MAT2beta respectively. During tumorigeness of hepatocelluar car...
journal_title:Journal of experimental & clinical cancer research : CR
pub_type: 杂志文章
doi:10.1186/1756-9966-27-72
更新日期:2008-11-21 00:00:00