Abstract:
BACKGROUND:MicroRNAs are the endogenous small non-coding RNA molecules capable of silencing protein coding genes at the posttranscriptional level. Based on computer-aided predictions, a single microRNA could have over a hundred of targets. On the other hand, a single protein-coding gene could be targeted by many potential microRNAs. However, only a relatively small number of these predicted microRNA/mRNA interactions are experimentally validated, and no systematic validation has been carried out using a reporter system. METHODS:In this study, we used luciferease reporter assays to validate microRNAs that can silence cyclin D1 (CCND1) because CCND1 is a well known proto-oncogene implicated in a variety of types of cancers. We chose miRanda http://www.microRNA.org as a primary prediction method. We then cloned 51 of 58 predicted microRNA precursors into pCDH-CMV-MCS-EF1-copGFP and tested for their effect on the luciferase reporter carrying the 3'-untranslated region (UTR) of CCND1 gene. RESULTS:Real-time PCR revealed the 45 of 51 cloned microRNA precursors expressed a relatively high level of the exogenous microRNAs which were used in our validation experiments. By an arbitrary cutoff of 35% reduction, we identified 7 microRNAs that were able to suppress Luc-CCND1-UTR activity. Among them, 4 of them were previously validated targets and the rest 3 microRNAs were validated to be positive in this study. Of interest, we found that miR-503 not only suppressed the luciferase activity, but also suppressed the endogenous CCND1 both at protein and mRNA levels. Furthermore, we showed that miR-503 was able to reduce S phase cell populations and caused cell growth inhibition, suggesting that miR-503 may be a putative tumor suppressor. CONCLUSION:This study provides a more comprehensive picture of microRNA/CCND1 interactions and it further demonstrates the importance of experimental target validation.
journal_name
BMC Cancerjournal_title
BMC cancerauthors
Jiang Q,Feng MG,Mo YYdoi
10.1186/1471-2407-9-194subject
Has Abstractpub_date
2009-06-18 00:00:00pages
194issn
1471-2407pii
1471-2407-9-194journal_volume
9pub_type
杂志文章相关文献
BMC CANCER文献大全abstract:BACKGROUND:To evaluate radiomics analysis in neuro-oncologic studies according to a radiomics quality score (RQS) system to find room for improvement in clinical use. METHODS:Pubmed and Embase were searched up the terms radiomics or radiogenomics and gliomas or glioblastomas until February 2019. From 189 articles, 51 ...
journal_title:BMC cancer
pub_type: 杂志文章,meta分析
doi:10.1186/s12885-019-6504-5
更新日期:2020-01-10 00:00:00
abstract:BACKGROUND:Renal toxicity has been reported with bisphosphonates such as pamidronate and zolidronate but not with ibandronate, in the treatment of breast cancer patients with bone metastasis. One of the patterns of bisphosphonate-induced nephrotoxicity is focal segmental glomerulosclerosis (FSGS) or its morphological v...
journal_title:BMC cancer
pub_type: 杂志文章,评审
doi:10.1186/s12885-015-1536-y
更新日期:2015-07-22 00:00:00
abstract:BACKGROUND:High grade gastroenteropancreatic (GEP) neuroendocrine neoplasms (NEN) with a Ki67 proliferation index > 20%, include well-differentiated tumours grade 3 (NET G3) and poorly differentiated (PD) neuroendocrine carcinomas (NEC). Abnormal p53-expression is a feature of PD tumours, while expression of chromogran...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-019-6498-z
更新日期:2020-01-10 00:00:00
abstract:BACKGROUND:The aim of this study was to investigate the incidence and prognostic value of disseminated tumor cells in bone marrow of breast carcinoma patients with early disease, and to analyze this finding in relation to lymph node involvement, determined by sentinel lymph node (SLN) biopsy analysis, and to prognostic...
journal_title:BMC cancer
pub_type: 临床试验,杂志文章
doi:10.1186/1471-2407-11-252
更新日期:2011-06-16 00:00:00
abstract:BACKGROUND:As aging is the most significant risk factor for cancer development, long-term prostate cancer (PCa) survivors have an evident risk of developing subsequent primary cancers (SPCs). Radiotherapy itself is an additional risk factor for cancer development and the SPCs appearing beyond 5 years after radiotherapy...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-020-06960-9
更新日期:2020-05-20 00:00:00
abstract:BACKGROUND:Accurate staging of colorectal cancer (CRC) with clinicopathological parameters is important for predicting prognosis and guiding treatment but provides no information about organ site of metastases. Patterns of genomic aberrations in primary colorectal tumors may reveal a chromosomal signature for organ spe...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/1471-2407-10-662
更新日期:2010-12-02 00:00:00
abstract:BACKGROUND:It has been proposed that mesenchymal stromal cells (MSCs) promote tumor progression by interacting with tumor cells and other stroma cells in the complex network of the tumor microenvironment. We characterized MSCs isolated and expanded from tumor tissues of pediatric patients diagnosed with neuroblastomas ...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-018-5082-2
更新日期:2018-11-27 00:00:00
abstract:BACKGROUND:B7-H4, a co-inhibitory molecule of the B7 family, can restrain T cell proliferation, cytokine secretion and the development of cytotoxicity. B7-H4 is expressed in tumor tissues at a higher level than in normal tissues, and has a potential effect to protect tumors from anti-tumor immune responses. This case-c...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/1471-2407-9-394
更新日期:2009-11-11 00:00:00
abstract:BACKGROUND:Cetuximab combined with chemotherapy is one of the first-line treatments of metastatic colorectal cancer. Although disease progression inevitably occurs, rechallenge and maintenance therapies using cetuximab-based regimens may be beneficial, particularly for patients with wild-type (WT) KRAS. CASE PRESENTAT...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-017-3133-8
更新日期:2017-02-14 00:00:00
abstract:BACKGROUND:Recurrent/metastatic squamous cell carcinoma of the head and neck (SCCHN) has a poor prognosis and the combination of cisplatin and cetuximab, with or without 5-fluorouracil, is the gold standard treatment in this stage. Thus, the concomitant use of novel compounds represents a critical strategy to improve t...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-016-2957-y
更新日期:2016-11-25 00:00:00
abstract:BACKGROUND:Lymphangiogenesis has become a new research frontier in tumor metastasis since the discovery of reliable lymphatic markers that have allowed observation and isolation of lymphatic endothelium. Cyclooxygenase-2 (COX-2) has been reported to be involved in the critical steps in carcinogenesis. However, possible...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/1471-2407-8-4
更新日期:2008-01-13 00:00:00
abstract:BACKGROUND:Hepatocellular carcinoma (HCC) is the second most common cause of cancer-related death in the world. N6-methyladenosine (m6A) RNA methylation is dynamically regulated by m6A RNA methylation modulators ("writer," "eraser," and "reader" proteins), which are associated with cancer occurrence and development. Th...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-020-6638-5
更新日期:2020-02-28 00:00:00
abstract:BACKGROUND:This study aimed to explore the heterogeneity of circRNA expression pattern via microarray, and further evaluate the potential of 10 specific circRNAs as diagnostic and prognostic biomarkers in multiple myeloma (MM). METHODS:In exploration stage (stage I), circRNA expression profiles were detected by the mi...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-020-6515-2
更新日期:2020-01-16 00:00:00
abstract:BACKGROUND:Outpatient autologous stem cell transplantations (ASCTs) in multiple myeloma and lymphoma patients have been shown to reduce the overall costs and improve the quality of life relative to inpatient ASCTs. This systematic review and meta-analysis was performed with the aim of comprehensively comparing the risk...
journal_title:BMC cancer
pub_type: 杂志文章,meta分析
doi:10.1186/s12885-018-5054-6
更新日期:2018-11-16 00:00:00
abstract:BACKGROUND:The receptor tyrosine kinases (RTKs) play critical roles in the development of cancers. Clear cell renal cell carcinoma (ccRCC) accounts for 75% of the RCC. The previous studies on the RTKs in ccRCCs mainly focused on their gene expressions. The activation and function of the RTKs in ccRCC have not been full...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-019-6159-2
更新日期:2019-11-05 00:00:00
abstract:BACKGROUND:Little information is available concerning how patient delay may be affected by mass disasters. The main objectives of the present study are to identify whether there was a post-disaster increase in the risk of experiencing patient delay among breast cancer patients in an area affected by the 2011 triple dis...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-017-3412-4
更新日期:2017-06-19 00:00:00
abstract:BACKGROUND:Continued smoking after cancer adversely affects quality of life and survival, but one fifth of cancer survivors still smoke. Despite its demands, cancer presents an opportunity for positive behaviour change. Smoking often occurs in social groups, therefore interventions which target families and individuals...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-017-3344-z
更新日期:2017-05-19 00:00:00
abstract:BACKGROUND:We investigated the role of the HIPK2-p53 signaling pathway in tumorigenesis and resistance to the drug Verbascoside (VB) in colorectal cancer (CRC), using in vivo and in vitro experiments. METHODS:Primary human CRC samples and normal intestinal tissues from patients were analyzed for HIPK2 expression by im...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/1471-2407-14-747
更新日期:2014-10-05 00:00:00
abstract:BACKGROUND:Melanoma can be lethal if not detected early and treated. Early detection can be facilitated via skin self-examination (SSE) and as such, SSE is part of melanoma follow-up care for individuals with a prior history, who face a life-long risk of reoccurrence. The objective of the current study was to identify ...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-019-6476-5
更新日期:2020-02-14 00:00:00
abstract:BACKGROUND:Lifestyle factors, including food and nutrition, physical activity, body composition and reproductive factors, and single nucleotide polymorphisms (SNPs) are associated with breast cancer risk, but few studies of these factors have been performed in the Japanese population. Thus, the goals of this study were...
journal_title:BMC cancer
pub_type: 杂志文章,多中心研究
doi:10.1186/1471-2407-13-565
更新日期:2013-12-01 00:00:00
abstract:BACKGROUND:The EGFR and downstream signaling pathways play an important role in tumorigenesis in oral squamous cell carcinoma (OSCC). Gene copy number alteration is one mechanism for overexpressing the EGFR protein and was also demonstrated to be related to lymph node metastasis, tumor invasiveness and perineural invas...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-017-3586-9
更新日期:2017-08-30 00:00:00
abstract:BACKGROUND:Periampullary cancers (PAC) including pancreatic, ampulla of Vater (AOV), and common bile duct (CBD) cancers are highly aggressive with a lack of useful prognostic markers beyond T stage. However, T staging can be biased due to the anatomic complexity of this region. Recently, several markers related to canc...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-020-6673-2
更新日期:2020-03-14 00:00:00
abstract:BACKGROUND:Temozolomide (TMZ)-induced side effects and drug tolerance to human gliomas are still challenging issues now. Our previous studies showed that honokiol, a major bioactive constituent of Magnolia officinalis (Houpo), is safe for normal brain cells and can kill human glioma cells. This study was further aimed ...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-018-4267-z
更新日期:2018-04-03 00:00:00
abstract:BACKGROUND:Cancer metastasis and drug resistance have traditionally been studied separately, though these two lethal pathological phenomena almost always occur concurrently. Brain metastasis occurs in a large proportion of lung cancer patients (~ 30%). Once diagnosed, patients have a poor prognosis surviving typically ...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/s12885-020-06808-2
更新日期:2020-04-07 00:00:00
abstract:BACKGROUND:The metastasis-promoting protein S100A4 induces expression of ephrin-A1 and osteopontin in osteosarcoma cell lines. The aim of this study was to investigate S100A4-mediated stimulation of ephrin-A1 and osteopontin in non-small cell lung cancer (NSCLC) cell lines, and to characterize the expression of these b...
journal_title:BMC cancer
pub_type: 杂志文章
doi:10.1186/1471-2407-12-333
更新日期:2012-08-01 00:00:00
abstract:BACKGROUND:A life threatening illness such as breast cancer can lead to a secondary diagnosis of PTSD (post traumatic stress disorder) with intrusive thoughts and avoidance as major symptoms. In a former study by the research group, 80% of the patients with breast cancer reported a high level of stress symptoms close t...
journal_title:BMC cancer
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1186/1471-2407-12-167
更新日期:2012-05-04 00:00:00
abstract:BACKGROUND:Ethyl carbamate (EC) is a multi-site carcinogen in experimental animals and probably carcinogenic to humans (IARC group 2A). Traces of EC below health-relevant ranges naturally occur in several fermented foods and beverages, while higher concentrations above 1 mg/l are regularly detected in only certain spir...
journal_title:BMC cancer
pub_type: 杂志文章,meta分析,评审
doi:10.1186/1471-2407-10-266
更新日期:2010-06-08 00:00:00
abstract:BACKGROUND:The aim of this study was to examine the efficacy and safety of everolimus in patients with progressive unresectable adenoid cystic carcinoma (ACC). METHODS:Histologically confirmed ACC patients with documented disease progression within 12 months prior to the study entry were eligible. Everolimus was given...
journal_title:BMC cancer
pub_type: 杂志文章,多中心研究
doi:10.1186/1471-2407-14-795
更新日期:2014-11-03 00:00:00
abstract:BACKGROUND:With the availability of effective anti-EGFR therapies for various solid malignancies, such as non-cell small lung cancer, colorectal cancer and squamous cell carcinoma of the head and neck, the knowledge of EGFR and K-RAS status becomes clinically important. The aim of this study was to analyse EGFR express...
journal_title:BMC cancer
pub_type: 杂志文章,多中心研究
doi:10.1186/1471-2407-10-189
更新日期:2010-05-11 00:00:00
abstract:BACKGROUND:To date, there is no report in the international literature of an oligodendroglioma of the ciliary body, nor is there an analysis of the possible origins of this lesion. CASE PRESENTATION:Here we report on a 52-year-old man admitted to our hospital with a ciliary body tumor revealed by clinical examination ...
journal_title:BMC cancer
pub_type: 杂志文章,评审
doi:10.1186/1471-2407-10-579
更新日期:2010-10-23 00:00:00