Abstract:
:A chromosomal break indicates a double-stranded DNA break of the chromatin fiber. Cytogenetic observations can enumerate chromosome breaks but cannot detect single-stranded DNA breaks (nicks). When a high frequency of chromosomal breaks occurs in a cell population, whether spontaneously occurred or mutagen induced, a higher frequency of nicks is expected. In order to correlate these two type of DNA lesions, we used human lymphoblastoid lines known to be either hypersensitive or relatively resistant to the genotoxicity of bleomycin. The frequency of nicks was estimated by grain counts over interphase nuclei in autoradiographs following the technique of in situ nick translation. Good agreement was found between these two sets of data, viz, hypersensitive lines showed a high frequency of chromatid breaks as well as a high frequency of grain counts, and vice versa. These results suggest that the phenomenon of differential bleomycin sensitivity is genetically determined.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Wang R,Hsu T,Liang Jdoi
10.3892/ijo.2.6.873subject
Has Abstractpub_date
1993-06-01 00:00:00pages
873-6issue
6eissn
1019-6439issn
1791-2423journal_volume
2pub_type
杂志文章abstract::Epithelial-mesenchymal transition (EMT) is thought to be a key step for cancer metastasis. Using an immunohistochemical approach with gastric carcinoma tissue, we found the expression of protease-activated receptor-1 (PAR1), along with a metalloproteinase known to activate PAR1, were associated with poorer prognosis, ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2651
更新日期:2014-12-01 00:00:00
abstract::From January 1992 to December 1995, 129 patients with previously untreated non-Hodgkin's lymphoma were randomised in a phase III multicenter trial to receive CEOP-B/VIMB or ProMACE-CytaBOM. Eligibility criteria included intermediate or high grade lymphoma (follicular large cell, diffuse small cleaved-cell, diffuse mix...
journal_title:International journal of oncology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.3892/ijo.16.1.149
更新日期:2000-01-01 00:00:00
abstract::Bile duct carcinoma patients generally have a poor prognosis. Understanding this cancer at the biological, genetic, molecular, and cellular level in ways relevant to clinical management is essential for developing effective preventive and therapeutic regimens. However, the currently established bile duct cancer cell l...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2005-02-01 00:00:00
abstract::Although histone deacetylase (HDAC) inhibitors are emerging as a promising new treatment strategy in malignancy, how they exert their effect on human non-small cell lung cancer cells is as yet unclear. This study was undertaken to investigate the underlying mechanism of an HDAC inhibitor, Trichostatin A (TSA), -induce...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2005-08-01 00:00:00
abstract::MicroRNAs can govern up to hundred different mRNAs and are important regulators of gene expression programs in development and disease. We analyzed the expression of microRNA-21, one of the most common oncomirs, in non-small cell lung cancer (NSCLC). Using northern blots the microRNA-21 expression levels of NSCLC-deri...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2272
更新日期:2014-04-01 00:00:00
abstract::Prostaglandin E2 (PGE2) can stimulate tumor progression by both direct and indirect mechanisms. However, its influence on cell proliferation is still unclear. The present study characterized expression of subtypes of PGE2 receptors in oral squamous cell carcinomas, while also investigating the effects of EP3 and EP4 s...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000211
更新日期:2009-03-01 00:00:00
abstract::The non-invasive treatment of tumors with preserved fertility holds great promise. The application of pulsed electric field (PEF) is a new biomedical engineering technique for tumor therapy. Picosecond pulsed electric fields (psPEF) can be transferred to target deep tissue non-invas...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1774
更新日期:2013-03-01 00:00:00
abstract::Quantitative nuclear morphometry (QNM) provides a reliable, reproducible method for measuring the degree of nuclear pleomorphism, a qualitative parameter widely incorporated into histopathological grading schemes. Nuclear shape has successfully been shown to predict primary prostate adenocarcinoma metastatic potential...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.7.3.673
更新日期:1995-09-01 00:00:00
abstract::To compare the oncosuppressive activity of integrated and episomal adeno-associated virus (AAV), two Epstein-Barr virus (EBV) derived episomal form vectors, p205 and p220, were used to generate plasmids containing episomal AAV. HeLa cells transfected with p205, p220, and the plasmids with forward (pA205-1, pA220-1) an...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1999-07-01 00:00:00
abstract::Changes in the promoter methylation of hTERT, the gene that encodes telomerase, a ribonucleoprotein responsible for replacing telomeric repeats, have been demonstrated in differentiating cells where hTERT is inhibited, suggesting epigenetic regulation of hTERT. All-trans retinoic acid (ATRA) induces differentiation in...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-03-01 00:00:00
abstract::It has previously been suggested that some tumours may elaborate substances which can suppress the functional activity of lymphokine activated killer (LAK) cells. We have investigated the effects of secreted products from the colorectal cancer cell line LoVo on the pattern of expression of T lymphocyte subsets and nat...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.3.4.763
更新日期:1993-10-01 00:00:00
abstract::Long non-coding RNAs (lncRNAs) are involved in cancer progression. In the present study, we analyzed the lncRNA profiles in adriamycin-resistant and -sensitive breast cancer cells and found a group of dysregulated lncRNAs in the adriamycin-resistant cells. Expression of the dysregulated lncRNAs was correlated with dys...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2016.3665
更新日期:2016-10-01 00:00:00
abstract::Two mouse HPV16-transformed cell lines, viz. MK16 cells, which induce metastasizing tumors, and TC-1 cells, which induce non-metastasizing tumors were transduced with the gene for mouse endostatin. Two clones constitutively expressing endostatin were isolated from each of them. They were denoted ME3 and ME9, and TE2 a...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo_00000331
更新日期:2009-07-01 00:00:00
abstract::Numerous dietary phytochemicals have shown anti-breast carcinogenic activities when tested in vitro; however, in most cases, the demonstrated efficacy of individual phytochemicals requires doses not readily achievable in vivo. Therefore, whether diets might exert translational promises and benefits in clinical setting...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-10-01 00:00:00
abstract::Histone deacetylase inhibitors (HDACIs) are involved in cell growth, apoptosis and differentiation. This study aimed to investigate the effects of HDACI scriptaid on histone modification, demethylation, cell growth, cell cycle and apoptosis in the RKO colorectal cancer cell line and screening for scriptaid-induced gen...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-10-01 00:00:00
abstract::Hematopoietic disorders can be used as a suitable tool of additional information on the actual resolving power of comparative genomic hybridization (CGH). Therefore, CGH examination was performed of DNA extracted from 23 acute and 15 chronic myeloproliferative disorders which had just been analyzed using classical cyt...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.16.6.1099
更新日期:2000-06-01 00:00:00
abstract::Overexpression of either of the multidrug resistance genes MDR1 and MRP is associated with resistance of tumors to multiple chemotherapeutic agents. Overexpression of MDR1 has been reported in some cell lines derived from human hepatocellular carcinomas (HCC) and hepatoblastomas (HB). The human gene for cMOAT ( journal_title:International journal of oncology pub_type: 杂志文章 doi:10.3892/ijo.15.3.559 更新日期:1999-09-01 00:00:00
abstract::The distinct roles of estrogen receptors (ERs) related with androgen receptors (ARs) have been proposed in prostate cancer, while the involvement of transforming growth factor-β (TGF-β) has been reported in the progression of prostate cancer. In this study, we examined whether the TGF-β signaling pathway is associated...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2460
更新日期:2014-08-01 00:00:00
abstract::Macrophages are a major component of the leukocyte infiltrate of tumors and play a pivotal role in the progression of hepatocellular carcinoma (HCC). However, the molecular mechanisms by which macrophages promote HCC invasion are poorly understood. The present study was undertaken to investigate the relationship betwe...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2761
更新日期:2015-02-01 00:00:00
abstract::VEGF, Hedgehog, FGF, Notch, and WNT signaling pathways network together for vascular remodeling during embryogenesis, tissue regeneration, and carcinogenesis. VEGFA (VEGF), VEGFB, VEGFC, VEGFD (FIGF) and PGF (PlGF) are VEGF family ligands for receptor tyrosine kinases, including VEGFR1 (FLT1), VEGFR2 (KDR) and VEGFR3 ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-06-01 00:00:00
abstract::Depletion of glutathione (GSH) by buthionine sulfoximine (BSO) has been reported to be toxic against some cancer cells and to sensitize many tumours including neuroblastoma (NB) to anticancer drugs. The balance between the production rate of reactive oxygen species (ROS) and the function of GSH affects the intracellul...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-01-01 00:00:00
abstract::The relation between the consumption of cruciferous vegetables and reduced prostate cancer occurrence has been documented, although the responsible phytochemicals are unknown. The effects of sulforaphane (SFN) which occurs as the precursor glucosinolate in broccoli and other cruciferous vegetables, and its metabolite ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.20.3.631
更新日期:2002-03-01 00:00:00
abstract::The assembly of trans-acting proteins on sequence-specific DNA cis-elements is crucial in the regulation of eukaryotic gene expression. Far upstream element binding proteins (FAB) are proteins that regulate the expression of the c-myc oncogene by binding to the far upstream element of the c-myc gene. The present study...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-09-01 00:00:00
abstract::IL-10 has been shown to play a crucial role in immunosuppression in cancer patients. We explored the regulation of IL-10 production by TNF-alpha, IL-1 beta, IL-6, IL-8, and IFN-gamma in human colon carcinoma COLO205 cells. Northern analysis revealed a marked expression of IL-10 mRNA after stimulation by IL-6, and a ma...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2001-03-01 00:00:00
abstract::Medulloblastoma is the most common malignant brain tumor in childhood. The most prevalent chromosomal abnormalities are isochromosome 17q and loss of 17p, the location of the tumor suppressor gene p53. Mutations in the p53 gene in medulloblastoma are relatively infrequent but have recently been correlated to poor prog...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2010.884
更新日期:2011-03-01 00:00:00
abstract::Multiple myeloma (MM) patients initially respond to conventional therapy, however, many develop resistance and have recurrences. We have reported in other tumors that the transcription factor Yin Yang 1 (YY1) is a resistant factor and, thus, we hypothesized that YY1 may be over-expressed in MM. Significantly, higher e...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2511
更新日期:2014-09-01 00:00:00
abstract::Esophageal squamous cell carcinoma (ESCC), the most common esophageal cancer in East Asia, is among the six cancers with the highest fatality rates worldwide. Unfortunately, multidisciplinary treatment strategies have not achieved satisfactory outcomes. Therefore, novel insights into the molecular biology of ESCC are ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.3167
更新日期:2015-11-01 00:00:00
abstract::The peptide hormone, GnRH has been hypothesized to play a direct antitumoral role in certain kinds of breast cancer. This direct effect is considered to function via high affinity membrane receptors to GnRH that have been demonstrated in tumors. However, no routine assay for GnRH receptors exist limiting further resea...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1995-08-01 00:00:00
abstract::Recent studies demonstrated an epigenetic inactivation of the runt-related transcription factor 3 (RUNX3) gene in human colon cancer. However, it remains unclear whether RUNX3 is tumor suppressive in colon cancer and, if so, the underlying molecular mechanisms of this activity are still unknown. In the present study, ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-11-01 00:00:00
abstract::Cell synchrony was induced in AGF cells by blocking of the cell cycle at GI-S boundary with high concentrations (2 mM) of thymidine for 11 h. Prolonged arrest of cells in GI-S (15 h-20 h) induced progressive and time dependent apoptosis. Early morphological changes in cellular and nuclear morphology (blebbing) were mo...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:1993-09-01 00:00:00