Abstract:
:We screened 29 human esophageal squamous cell carcinoma (ESC) cell lines for mutations of the p53 gene through all coding exons and exon-intron junctions. Mutations were found in 22 cell lines (76%), consisting of 20 single-base substitutions, 2 small deletions and 1 single-base insertion. Out of 20 single-base substitution, 5 were located at the exon-intron junctions and mRNAs with abnormal splicing were detected by RT-PCR in 4 of them. A G:C to T:A transversion, which occurred rather frequently in resected tumors of ESC, was observed in only 1 cell line, and, instead, frequent transitions at CpG sites were detected. We also examined 65 fresh tumor materials, from all of which we tried to establish cell lines, and detected mutations in 26 samples (40%). Compared with the results in these fresh tumor materials, the mutation incidence in cell lines was significantly high and the mutation spectrum was also different. From these 65 tumors, 10 cell lines were established, including 3 cell lines from 26 tumors with p53 mutations and 7 cell lines from 39 without mutations, which indicates that there was no significant correlation between the status of the p53 gene in each fresh tumor and its establishment as a cell line. In 7 cell lines established from mutation-free tumors, newly acquired mutations were detected in 5, which suggests that mutations might occur during the process of establishing cell lines.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Tanaka H,Shibagaki I,Shimada Y,Wagata T,Imamura M,Ishizaki Kdoi
10.1002/(SICI)1097-0215(19960126)65:3<372::AID-IJCsubject
Has Abstractpub_date
1996-01-26 00:00:00pages
372-6issue
3eissn
0020-7136issn
1097-0215pii
10.1002/(SICI)1097-0215(19960126)65:3<372::AID-IJCjournal_volume
65pub_type
杂志文章abstract::Lysine-specific demethylase 1 (LSD1), a histone lysine demethylase with the main specificity for H3K4me2, has been shown to be overexpressed in rhabdomyosarcoma (RMS) tumor samples. However, its role in RMS biology is not yet well understood. Here, we identified a new role of LSD1 in regulating adhesion of RMS cells. ...
journal_title:International journal of cancer
pub_type: 杂志文章
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abstract::This is a prospective study of lymphoid tissue showing benign reactive hyperplasia (18 lymph nodes and 2 tonsils), using cytogenetic analysis of cells stimulated with T- or B-cell mitogens. The reason for this study was the detection of an abnormal chromosomal population in cells from an enlarged lymph node excised fr...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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journal_title:International journal of cancer
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doi:10.1002/(sici)1097-0215(19981109)78:4<496::aid-ijc
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abstract::Cancer is an infrequent disease in childhood. However, it is responsible for 13.06% of child deaths between 1 and 14 years in Cuba. The aim of our work was to describe the incidence of childhood cancer in the period 1986 to 1990 using data reported to the National Cancer Registry (NCR) of Cuba. All cancer cases betwee...
journal_title:International journal of cancer
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更新日期:1997-08-07 00:00:00
abstract::Expression levels of hTERT mRNA were investigated by RT-PCR in tissue specimens of patients with (Group A) and without (Group B) clinically overt bronchial carcinoma, respectively. Bronchial carcinoma (n = 9) and distant normal (n = 9) specimens were analyzed in Group A. The chance of carcinoma seemed to increase with...
journal_title:International journal of cancer
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abstract::Although surgical resection is considered the adequate treatment in early stages of nonsmall cell lung cancer, long-term survival is not satisfactory and recurrence rate is high. We previously showed that postoperative chemotherapy at stage IB reduces recurrences and prolongs overall survival. We extended size and obs...
journal_title:International journal of cancer
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doi:10.1002/ijc.21933
更新日期:2006-08-15 00:00:00
abstract::Human conventional renal cell carcinoma (CCC) remains resistant to current therapies. Focal Adhesion Kinase (FAK) is upregulated in many epithelial tumors and clearly implicated in nearly all facets of cancer. However, only few reports have assessed whether FAK may be associated with renal tumorigenesis. In this study...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:2019-03-01 00:00:00
abstract::Melanoma is a highly malignant and increasingly common neoplasm. Because metastatic melanoma remains incurable, new treatment approaches are needed. Immunoliposomes have been previously shown to enhance the selective localization of immunoliposome-entrapped drugs to solid tumors with improvements in the therapeutic in...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19990412)81:2<268::aid-ijc
更新日期:1999-04-12 00:00:00
abstract::In a previous study, human ZNF312b was identified as a cell proliferation-associated oncogene via the K-ras/extracellular signal-regulated kinase cascade in gastric cancer. However, the mechanism concerning its transcriptional activation remains unknown. Here, we show that DNA methylation and histone acetylation of th...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.25871
更新日期:2011-11-01 00:00:00
abstract::The aim of our study was to further explore the use of anti-angiogenic therapy targeting the vascular endothelial growth factor receptor (VEGFR) on endothelial cells while simultaneously targeting platelet-derived growth factor receptors (PDGFRs) on adjacent pericytes. B16 mouse melanoma tumors exogenously expressing ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.22999
更新日期:2007-12-15 00:00:00
abstract::A subgroup of head and neck squamous cell carcinomas (HNSCCs) contains high-risk human papillomavirus-type 16 (HPV16). The viral E6 and E7 oncoproteins inactivate the p53 and pRb proteins, respectively. We examined the causative effect of HPV16 E6 and E7 expression on the immortalization of normal oral keratinocytes (...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.25474
更新日期:2011-04-01 00:00:00
abstract::Chicken anemia virus viral protein 3 (VP3 or apoptin) localizes more efficiently in the nucleus of transformed than nontransformed cells. Although previous studies implicate the C-terminus of apoptin as being responsible, the molecular basis is controversial, and the extent to which altered nuclear transport efficienc...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.23884
更新日期:2008-12-15 00:00:00
abstract::Survivin protein is an attractive candidate for cancer immunotherapy since it is abundantly expressed in most common human cancers and mostly absent in normal adult tissues. Malignant mesothelioma (MM) is a deadly cancer associated with asbestos or erionite exposure for which no successful therapies are currently avai...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.28048
更新日期:2013-08-01 00:00:00
abstract::As a part of an assessment of the potential use of retinoids in preventive and adjuvant treatment of HNSCC, we examined the effects of beta-all-trans retinoic acid (RA) on the growth and cell-surface glycoconjugates of 2 HNSCC cell lines. These lines, designated 1483 and 183A, were established from an untreated patien...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910400217
更新日期:1987-08-15 00:00:00
abstract::A high molecular weight RNA-reverse transcriptase complex in the culture media of peripheral leukocytes obtained from two Japanese patients with myeloma-leukemia was detected by demonstration of a 3H-uridine peak and a peak of DNA polymerizing activity banding at a density of 1.15-1.19g/ml. The enzyme in the complex w...
journal_title:International journal of cancer
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更新日期:1977-07-15 00:00:00
abstract::Our aim was to evaluate whether serum concentrations of squamous cell carcinoma antigen (SCC-Ag) are an independent prognostic factor in patients with vulvar cancer. We measured SCC-Ag in pretreatment serum samples of 55 patients with squamous cell vulvar cancer, 30 patients with vulvar intraepithelial neoplasia (VIN)...
journal_title:International journal of cancer
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abstract::The insulin like growth factor (IGF) signaling pathway has been shown to contribute to melanoma progression, but little is known about the role of the IGF binding protein 3 (IGFBP-3) in melanoma biology. The aim of the present study was to characterize expression, function and regulation of IGFBP-3 in malignant melano...
journal_title:International journal of cancer
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abstract::Exercise has been shown to reduce risk and improve prognosis of several types of cancers. Irisin is a myokine linked to exercise and lean body mass, which is thought to favorably alter metabolism systemically, potentially providing benefit for metabolic disease (including cancer). We evaluated the effects of various c...
journal_title:International journal of cancer
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abstract::Gallstones, a common gastrointestinal condition, can lead to several digestive complications and can result in inflammation. Risk factors for gallstones include obesity, diabetes, smoking and physical inactivity, all of which are known risk factors for colorectal cancer (CRC), as is inflammation. However, it is unclea...
journal_title:International journal of cancer
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abstract::Although the incidence of, and deaths due to, malignant melanoma are rising at a rapid rate, few experimental models mimic the highly metastatic properties associated with the pathogenesis of the human disease, making study of the disease difficult. Thus, new human models are required to understand melanoma biology, e...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910470211
更新日期:1991-01-21 00:00:00
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journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970611)71:6<924::aid-ijc
更新日期:1997-06-11 00:00:00
abstract::Telomerase activity is involved in the maintenance of telomere length and is thought to be required for cellular immortality and oncogenesis. Three major subunits composing telomerase, human telomerase RNA (hTR), telomerase-associated protein (TPI) and human telomerase catalytic subunit (hTERT), have been identified. ...
journal_title:International journal of cancer
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doi:10.1002/(sici)1097-0215(19990315)80:6<804::aid-ijc
更新日期:1999-03-15 00:00:00
abstract::A panel of human breast cancer specimens was examined for single base change mutations by DNA sequencing and for larger deletions using a PCR-based assay. In the cancer specimens examined, no sequencing variants were detected other than a previously characterized polymorphism. Although most of the specimens contained ...
journal_title:International journal of cancer
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更新日期:2000-10-15 00:00:00
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journal_title:International journal of cancer
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abstract::We have obtained a novel multidrug resistant cell line, derived from HT29 G(+) human colon carcinoma cells, by selection with gradually increasing concentrations of the anti-mitotic, microtubule-disrupting agent colchicine. This HT29(col) cell line displayed a 25-fold increase in colchicine resistance and exhibited cr...
journal_title:International journal of cancer
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abstract::The Glypican (GPC) family is a prototypical member of the cell-surface heparan sulfate proteoglycans (HSPGs). The HSPGs have been demonstrated to interact with growth factors, act as coreceptors and modulate growth factor activity. Here we show that based on oligonucleotide array analysis, GPC3 was upregulated in hepa...
journal_title:International journal of cancer
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更新日期:2003-02-10 00:00:00
abstract::Cigarette smoking and alcohol consumption were examined as potential risk factors in a case-control study of primary liver cancer (PLC). A total of 165 PLC cases and 465 matched controls from several US hospitals were studied. A weak but statistically significant (p less than 0.05) dose-response relationship was obser...
journal_title:International journal of cancer
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更新日期:1988-09-15 00:00:00