Abstract:
:Although epidemiological studies have suggested a positive correlation between environmental radon exposure and prostate cancer, the mechanism involved is not clear. In the present study, we examined the oncogenic transforming potency of alpha-particles using non-tumorigenic, telomerase-immortalized human benign prostate epithelial cells. We report the malignant transformation of human benign prostate epithelial cells after a single exposure to 0.6 Gy dose of alpha-particles. Transformed cells showed anchorage-independent growth in soft agar and induced progressively growing tumors when transplanted into SCID mice. The tumors were characterized histologically as poorly differentiated adenocarcinomas. The cell line derived from tumor (SCID 5015), like the unirradiated cells, expressed cytokeratin 5, 8 and 18, NKX3.1 and AMACR. The malignant cells showed increased secretion of MMP2. Stepwise chromosomal changes in the progression to tumorigenicity were observed. Chromosome abnormalities were identified in both irradiated and tumorigenic cells relative to the non-irradiated control cells. Prominent changes in chromosomes 6, 11 and 16, as well as mutations and deletions of the p53 gene were observed in the tumor outgrowth and tumor cells. These findings provide the first evidence of malignant transformation of human benign prostate epithelial cells exposed to a single dose of alpha-particles. This model provides an opportunity to study the cellular and molecular alterations that occur in radiation carcinogenesis in human prostate cells.
journal_name
Int J Oncoljournal_title
International journal of oncologyauthors
Li H,Gu Y,Miki J,Hukku B,McLeod DG,Hei TK,Rhim JSsubject
Has Abstractpub_date
2007-09-01 00:00:00pages
537-44issue
3eissn
1019-6439issn
1791-2423journal_volume
31pub_type
杂志文章abstract::Docetaxel is one of the most commonly used chemotherapeutic agents in breast cancer. To avert from significant toxicities with no clinical benefit, identification of predictive markers for response is one of the most important unsolved clinical needs. Therefore, the potential associ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2012.1470
更新日期:2012-08-01 00:00:00
abstract::The development of carcinoma is associated with alterations in the expression of many cell adhesion molecules. Syndecan-1 is a cell surface proteoglycan that binds cells to the extracellular matrix and changes its expression following malignant transformation in some tumors. Our purpose was to examine the pattern of s...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::Tumour cell surfaces possess a cell surface protease (GB), which can be recognised by a cytoplasmic inhibitor protein prepared from cultured tumour cells. This enzyme inhibitor complex has been shown to be reversibly dissociated by 10-(4)M sodium dodecyl sulphate. Sections of frozen tumour tissue were used to provide ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.1.1.59
更新日期:1992-06-01 00:00:00
abstract::Increasing evidence suggests that microRNAs (miRNAs) play a critical role in tumorigenesis. Decreased expression of miR‑382 has been observed in various types of cancers. However, the biological function of miRNA-382 in ovarian cancer is still largely unknown. Here, we found miR‑382 was downregulated in human ovarian ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.3241
更新日期:2016-01-01 00:00:00
abstract::We previously showed that the B cell leukemia cell line NALM-6 had the highest susceptibility among a number of leukemia cell lines to spiruchostatin B (SP-B), a potent histone deacetylase (HDAC) inhibitor. We also showed that SP-B-induced cytotoxicity depended on induction of apopt...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2012.1507
更新日期:2012-09-01 00:00:00
abstract::Frizzled (FZD) genes encode receptors for WNTs, which play key roles in carcinogenesis and embryogenesis. We have previously cloned the FZD10 gene, and demonstrated up-regulation of FZD10 mRNA in the cervical cancer cell line HeLa S3, gastric cancer cell lines TMK1 and MKN74, and 4 cases out of 10 cases of primary gas...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::We examined the gene expression profiles of esophageal squamous cell carcinomas (ESCCs) with respect to degree of invasive depth and lymph node (LN) involvement in a large cohort. We used high-density oligonucleotide microarrays to examine the expression of 22,115 genes in 54 ESCCs and 11 non-cancerous esophageal tiss...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-05-01 00:00:00
abstract::A herbal preparation denoted PC SPES(R) is available in 'natural food' or 'health food' stores in the United States. This mixture (patent pending, US Serial number 08/697,920) consists of extracts from 8 different herbs, 7 originating from China and one from America, and is sold as a dietary supplement. Although sever...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.11.3.437
更新日期:1997-09-01 00:00:00
abstract::The human ovarian cancer cell line OV-MZ-19, established from a patient with cystadenocarcinoma of the ovary, expressing thrombomodulin (TM), a cell surface receptor for the serine protease thrombin, interacts with monoclonal and polyclonal antibodies having different specificity for TM. These antibodies detect TM ant...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.13.4.645
更新日期:1998-10-01 00:00:00
abstract::Emerging evidence indicates that mesenchymal stem cells (MSCs) serve an indispensable role in the tumor microenvironment. However, whether MSCs participate in the development of oral carcinogenesis remains unclear. The present study isolated MSCs from clinical tissues and investigated the differences of MSCs derived f...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2019.4756
更新日期:2019-05-01 00:00:00
abstract::The Warburg effect is a unique metabolic feature of the majority of tumor cells and is closely related to chemotherapeutic resistance. Pyruvate dehydrogenase kinase 1 (PDK1) is considered a 'switch' that controls the fate of pyruvate in glucose metabolism. However, to date, to the best of our knowledge, there are only...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2020.5098
更新日期:2020-09-01 00:00:00
abstract::Serum ferritin is elevated in many cancers. Using the subtraction-enhanced display technique, we isolated several cDNA clones including ferritin-H which is overexpressed in rat hepatocellular carcinoma (HCC) induced by diethylnitrosamine. We investigated hepatic messenger RNA (mRNA) levels of ferritin-H in patients wi...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.11.1.187
更新日期:1997-07-01 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::Sonic hedgehog (SHH), Indian hedgehog (IHH) and Desert hedgehog (DHH) are Hedgehog family ligands, which play key roles in embryogenesis and carcinogenesis, especially in pancreatic cancer and gastric cancer. Drosophila Costal-2 (Cos2) is a Hedgehog signaling regulator, interacting with Smoothened (Smo), Cubitus inter...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2004-12-01 00:00:00
abstract::Resistance to tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) is a major limitation for its clinical use. The mechanisms of TRAIL resistance have been mostly studied in the context of cell lines that are intrinsically resistant to TRAIL. However, little is known about the molecular alterations that con...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2012.1748
更新日期:2013-02-01 00:00:00
abstract::We have developed a new type of drug delivery system (DDS) comprising a complex of porous hydroxyapatite (HAP) with the anticancer drug doxorubicin hydrochloride (DOX) and the glutathione inhibitor buthionine sulfoximine (BSO) (DOX and BSO-HAP complex). We then studied the antitumour effect of DOX and BSO-HAP combined...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.10.5.961
更新日期:1997-05-01 00:00:00
abstract::Sialyl Le(a) antigen (CA19-9), a member of a family of high molecular weight glycoproteins, was originally described as a gastrointestinal- and pancreatic-specific tumor marker. Recent studies have demonstrated that sialyl Le(a) is a ligand for E-selectin and may play an important role in tumor metastasis. However, ex...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2000-10-01 00:00:00
abstract::Although it has been shown that the cross-talk between osteoblasts and tumor cells stimulates proliferation and invasion of prostate carcinoma (PCa) cells, the molecular mechanisms underlying this event are largely unknown. In this study, we demonstrated that the PCa cells, PC3, derived from bone metastasis, undergo c...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2006-04-01 00:00:00
abstract::Cytokines of the TGF beta family are thought to be involved in cellular growth control and are therefore likely candidates to regulate homeostasis of the prostate. We have analyzed immunohistochemically the expression of TGF-beta 3 in normal prostate (NP), benign prostate hyperplasia (BPH) and prostate cancer (PCa). I...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.11.6.1185
更新日期:1997-12-01 00:00:00
abstract::Lamins are the major components of the nuclear lamina and play important roles in many cellular processes. The role of lamins in cancer development and progression is still unclear but it is known that reduced expression of lamin B1 has been observed in colon cancer. Thus, the aim of the present study was to elucidate...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2017.4182
更新日期:2018-01-01 00:00:00
abstract::Gene amplification occurs frequently in human glioblastomas. We report the amplification and expression analysis of glioma amplified sequence 64 (GAS64) which was recently identified by microdissection mediated cDNA capture from the amplicon at 12q13-15. Herein we analyzed primary tumor tissues for amplification frequ...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2002-01-01 00:00:00
abstract::Prostate cancer is characterized by structural rearrangements, most frequently including translocations between androgen-dependent genes and members of the ETS family of transcription factor like TMPRSS2:ERG. In a recent whole genome sequencing study we identified 140 gene fusions that were unrelated to ETS genes in 1...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2015.2855
更新日期:2015-04-01 00:00:00
abstract::'Rare sugars' are defined as monosaccharides that exist in nature but are only present in limited quantities. The development of mass production method of rare sugars revealed some interesting physiological effects of these on animal cells, but the mechanisms have not been well studied. We examined the effect of D-all...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-02-01 00:00:00
abstract::Although HIF-1α is considered an attractive target for the development of cancer therapies, like other transcriptional factors, it has been regarded as 'undruggable'. The decoy approach is a new class of antigene strategy that can be used to modulate the function of endogenous transcriptional factors. Here, we designe...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2014.2715
更新日期:2015-01-01 00:00:00
abstract::CXC chemokines have a major influence on the angiogenesis, growth and metastatic potential of pancreatic ductal adenocarcinoma. CXCL16 is a unique transmembrane CXC chemokine, which is shed by members of the disintegrins and metalloproteases (ADAMs), in particular by ADAM10 and ADAM17. In our study, we evaluated expre...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:
更新日期:2008-08-01 00:00:00
abstract::One of the genes that the authors have isolated by a differential display of hepatocellular carcinoma compared to adjacent liver is the alpha6 integrin. alpha6 integrin is the major adhesion receptor for laminin and is suggested to be involved in tumor cell invasion and metastasis. To our knowledge, however, there are...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.16.4.725
更新日期:2000-04-01 00:00:00
abstract::We have examined six patients with multiple low grade, low stage superficial multifocal bladder tumors with surrounding tissues for loss of heterozygosity (LOH) and microsatellite instability at chromosome 3, totaling 76 samples. The majority (4/5) of the patients had LOH at or close to the fragile histidine triad (FH...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.18.1.203
更新日期:2001-01-01 00:00:00
abstract::Patients with pancreatic cancer frequently demonstrate symptoms such as weight-loss and muscle wasting and have clinical evidence of a systemic inflammatory response. Such effects may be mediated by pro-inflammatory cytokines derived from tumor cells. The production of interleukin-6 and -8 by pancreatic cancer cell li...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.21.4.881
更新日期:2002-10-01 00:00:00
abstract::We examined the clinical significance of E-cadherin and vimentin expression in 83 patients with breast dancer. E-cadherin expression was correlated with axillary metastases, histologic grade, recurrence and disease-free survival, but not with overall survival. On the other hand, vimentin expression was correlated with...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.9.4.755
更新日期:1996-10-01 00:00:00
abstract::Currently, some evidence suggests that human multipotential mesenchymal stems cells (hMSCs) aid tumor growth and metastasis. Nutrient deprivation and oxygen deficiency are representative characteristics of solid tumor microenvironment during the cancer development. Because the effects of hMSCs on tumors under stressfu...
journal_title:International journal of oncology
pub_type: 杂志文章
doi:10.3892/ijo.2013.1810
更新日期:2013-04-01 00:00:00