Abstract:
:One of the key end-points for understanding the molecular basis of the breast in its normal and cancer status is the quantitation of gene expression in specific cell populations. Microdissection techniques allow extraction of morphologically distinct cells for molecular analysis. The objective of this study was to determine the optimal RNA isolation and amplification to perform genomic expression analysis using the microarray technique from normal breast paraffin-embedded tissue samples using laser capture microdissection (LCM). We isolated epithelial and interlobular stroma cells from normal breast tissue and the total RNA was amplified using a PCR methodology developed by us, and in parallel the same starting material was used for amplification using the linear methodology. After two rounds of RNA amplification, we checked the quality of each amplified RNA and carried out the hybridization with cDNA glass-microarrays employing 15,000 genes for each replicate. In conclusion, we have successfully demonstrated that our PCR methodology is accurate and precise and give us a higher yield of amplified RNA from small number of cells obtained from LCM compared with the typical linear amplification methodology.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Balogh GA,Heulings R,Mailo D,Wang R,Li YS,Hardy R,Russo Jsubject
Has Abstractpub_date
2007-08-01 00:00:00pages
253-60issue
2eissn
1019-6439issn
1791-2423journal_volume
31pub_type
杂志文章abstract::Breast cancer (BC) continues to affect the lives of millions of women worldwide. Several members of the carcinoembryonic antigen-related cell adhesion molecule (CEACAM) subfamily are involved in tumor progression. Notably, the CEACAM subfamily harbors the already established cancer biomarker CEA, as well as other pote...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1860
更新日期:2013-05-01 00:00:00
abstract::Of 108 Wistar/Ma rats perinatally injected with Snyder-Theilen feline sarcoma virus, 75 developed tumors within 60 days (group A), and 25 after more than 117 days (group B). Metastases were detected in 59.1% and 11.8% in group A and B respectively. Antibody to v-fes gene product was found to occur before tumor develop...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.10.3.539
更新日期:1997-03-01 00:00:00
abstract::We studied the mechanism by which the para and meta positional isomers of nitric oxide-donating aspirin (NO-ASA) inhibit human colon cancer cell growth. These compounds are promising chemopreventive agents and represent a broader class of novel drugs. The two isomers differ drastically in their 24-h IC50s for cell gro...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000397
更新日期:2009-10-01 00:00:00
abstract::Despite recent advances in understanding colorectal tumour biology, there is still a need to improve the 5-year survival rate of patients with colorectal cancer as approximately 40% of patients presenting with advanced disease will remain resistant to therapy. One of the major contributing factors in resistance to the...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000666
更新日期:2010-07-01 00:00:00
abstract::Evidence from the literature widely supports the efficacy of screening for colorectal cancer (CRC) in reducing mortality. A blood-based assay, potentially, represents a more accessible early detection tool for the identification of circulating tumour cells originating from a primary tumour site in the body. The presen...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000701
更新日期:2010-08-01 00:00:00
abstract::Acquirement of multi-drug resistance by tumor cells represents a major obstacle in the management of prostate cancer. Such resistance was demonstrated in the androgen-independent DU-145 cells in response to paclitaxel and the mechanisms by which these cell develops resistance was not understood. The objective of this ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2003-08-01 00:00:00
abstract::Gicerin, an immunoglobulin superfamily protein, is expressed abundantly in the embryonic tissues and plays an important role in development through its cell adhesive activity. Interestingly, re-expression of gicerin is found in a variety of tumors. In the present study, the possible role of gicerin in the progression ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2003-12-01 00:00:00
abstract::5-Fluorouracil (5-FU), a fluoropyrimidine analogue, is one of the most commonly used anticancer drugs for the treatment of gastrointestinal malignancies. Some studies reported that the cytotoxicity of fluoropyrimidines is mediated, in large part, by inhibition of the thymidylate synthase (TS), an essential DNA synthet...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2004-01-01 00:00:00
abstract::Since the efficacy of chemotherapy can be enhanced by targeting to specific receptors on tumors, we investigated the expression of LH-RH receptors in 5 human colon cancer lines and the effects of cytotoxic LH-RH analogs on these tumors. Nude mice bearing HT-29, HCT-116, HCT-15, LoVo and Colo-320DM cancers were treated...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2007-06-01 00:00:00
abstract::Investigators have shown that green tea may decrease the risk of cancer. It is widely accepted that the main active component of green tea is EGCG (epigallocatechin-3-gallate). In our previous study, we examined the effect of green tea on breast cancer growth and endothelial cells both in in vitro assays and in animal...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2002-09-01 00:00:00
abstract::MicroRNAs (miRNAs) are a large family of small, non-coding RNAs that play a pivotal role in tumorigenesis. miR‑34a, which is a member of the miR-34 family, is a downstream target of p53. Increasing evidence shows that miR-34a dysregulation may contribute to tumor development and progression in numerous cancers, includ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2017.4015
更新日期:2017-07-01 00:00:00
abstract::Elderly patients with advanced non-small cell lung cancer (NSCLC) require chemotherapy that is effective and minimally toxic. We evaluated the activity of a combination of vinorelbine and 5-fluorouracil (5-FU)/UFT (a fixed combination of tegafur and uracil) in vitro and in vivo to establish a rationale for clinical us...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2004-11-01 00:00:00
abstract::Hepatocellular carcinoma (HCC) is difficult to diagnose early, resulting in only 30% resection rate. HCC is a relatively chemo-resistant tumor, molecular targeted therapy can only benefit approximately 30% patients with liver cancer. Bufalin (Bu) is one of the topoisomerase II inhibitors, many studies have recently fo...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3667
更新日期:2016-10-01 00:00:00
abstract::Nitric oxide (NO) shows tumoricidal activity. We had previously reported that NO downregulates the phosphatidylinositol-3-kinase/Akt pathway, but upregulates the MEK/ERK pathway downstream of growth factor signaling. We hypothesized that NO donor and MEK inhibitor in combination syn...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2011.1243
更新日期:2012-03-01 00:00:00
abstract::Hypoxia regulates the expression of genes that promote tumor growth, angiogenesis and invasion. We previously studied hypoxic tumor cells in vitro and from hepatic metastases of colorectal cancer and determined several potential prognostic factors for hepatocellular carcinoma (HCC). In this study, we evaluated the pro...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2519
更新日期:2014-09-01 00:00:00
abstract::In this communication, the roles of apoptosis-inducing factor (AIF) and Bcl-2 inhibitor of transcription (Bit1) in TAp63gamma-induced apoptosis were investigated in human esophageal squamous cancer EC9706 cells. Positive RNA and protein expressions of AIF and Bit1 in these cells were verified. However, no TAp63gamma c...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2009-08-01 00:00:00
abstract::m-Chloroperoxybenzoic acid (CPBA),which induces ornithine decarboxylase activity as much as 12-O-tetradecanoylphorbol-13-acetate (TPA), was tested for its ability to induce DNA synthesis, hydroperoxide (HPx) production, and tumor promotion in mouse epidermis in vivo. After an early inhibition, CPBA stimulates DNA synt...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.8.1.197
更新日期:1996-01-01 00:00:00
abstract::We investigated the expression and promoter methylation of dbpA in human hepatocellular carcinoma (HCC) and examined their correlation with clinicopathological features. In 96 paired samples of HCC and adjacent non-tumorous liver, and 10 normal liver specimens, dbpA mRNA was quantif...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2011.1282
更新日期:2012-03-01 00:00:00
abstract::Transforming growth factor beta1 (TGF-beta1) has been shown to exhibit anti-proliferative activity for mammary gland epithelial cells and for human breast cancer cells. Insulin-like growth factor I (IGF-I), in contrast, is a well-characterized mitogenic and anti-apoptotic factor involved in mammary gland physiology. I...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.16.2.277
更新日期:2000-02-01 00:00:00
abstract::The relationship between p53 point mutation and patient survival was examined in 328 colorectal cancer patients. Point mutation was detected in 51% (166/328) of cases and was associated with a poorer prognosis in univariate and multivariate analysis. However, subcohort analysis showed that this relationship was restri...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.15.3.491
更新日期:1999-09-01 00:00:00
abstract::Recent studies show an increased incidence of head and neck cancers worldwide. The present study evaluated the trend in the incidence of head and neck cancers in England during 2002-2011. Data were extracted from the database of Office for National Statistics. The study population was categorised according to age, res...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.2990
更新日期:2015-07-01 00:00:00
abstract::Tumor-bearing mice with two different locally growing malignant tumors (epithelial like, MCG 101; malignant melanoma, K1735-M2) were used to evaluate the putative role of prostaglandins for survival and local tumor growth in experimental cancer. Daily systemic injections of indomethacin (1 mu g/g bw) were used to bloc...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.7.6.1405
更新日期:1995-12-01 00:00:00
abstract::Paclitaxel (PTX) is an anticancer drug currently in phase II clinical trials. This study shows for the first time that low doses of PTX (5 nM) potently induce apoptosis in human retinoblastoma Y79 cells. The effect of PTX is accompanied by a potent induction of E2F1 which appears to play a critical role in the effects...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-10-01 00:00:00
abstract::The effects of prostaglandin E2 and indomethacin on carcinogenesis were studied in male Wistar rats. Of the rats, those treated with MNNG (MNNG group) were given 1 ml of 0.1% solution of MNNG in distilled water by intrarectal instillation every day for 14 days. The diet for the rats treated with Indomethacin and MNNG ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1993-08-01 00:00:00
abstract::Thymidylate synthase (TS) is an essential enzyme for DNA biosynthesis that is an important target of fluoropyrimidine anti-cancer drugs such as 5-fluorouracil (5-FU), which is frequently used against human colon adenocarcinomas. Because levels of TS in such tumors may be predictive of chemotherapeutic response to 5-FU...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1993-02-01 00:00:00
abstract::Metformin is a commonly used oral anti-hyperglycemic agent of the biguanide family. Recent studies suggest that metformin may reduce cancer risk and improve prognosis. However, the antitumor mechanism of metformin in several types of cancers, including hepatocellular carcinoma (HCC), has not been elucidated. The goal ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2419
更新日期:2014-07-01 00:00:00
abstract::Diagnostic features of 102 consecutive cases of cancer reoccurrence in the conserved breast are reported. The sensitivity of palpation, mammography, cytology or ultrasonography was 75.5%, 58.7%, 77.4% and 77.8%, respectively. Mammography failures were not due to natural breast density and could probably be explained b...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.3.2.337
更新日期:1993-08-01 00:00:00
abstract::The tumor suppressor protein p53 is one of the most important manipulators of the cell cycle. By interaction with targets such as WAF1/CIP1, mdm2 or GADD45 p53 functions as a negative or positive regulator of the cell cycle. After DNA damage p53 is implicated in growth arrest of cells in the G(1) phase of the cell cyc...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.6.5.1129
更新日期:1995-05-01 00:00:00
abstract::Transcriptional silencing of the DNA repair protein, O6-methylguanine-DNA methyltransferase (MGMT), occurs only in malignant or transformed cell lines, and such MGMT-deficient cells are hypersensitive to chemotherapeutic alkylating agents such as 1, 3-bis (2-chloroethyl)-1-nitrosourea (BCNU) and temozolomide. Previous...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.18.6.1187
更新日期:2001-06-01 00:00:00
abstract::The human teratocarcinoma cell line (Tera 2) could be stimulated to a moderate increase in cell number in serum-free medium by addition of 5 ng leukemia inhibitory factor (LIF)/ml. However this effect was only observed in short term (24 h) cultures. By comparing cell numbers with thymidine incorporation data and propo...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.5.6.1419
更新日期:1994-12-01 00:00:00