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 (OKCs) and compared the resulting phenotype with alternative ways of p53- and pRb-pathway abrogation frequently found in HNSCCs without HPV. Primary OKCs were conditionally immortalized with temperature-sensitive SV40 large T-antigen and human telomerase, allowing these cells to return to their senescent primary state after temperature shift. HPV16 E6 and E7 were introduced to overcome senescence, determined with population doubling (PD) as read-out. For comparison, we downregulated p53 and p16 by short hairpin RNA genes and expressed mutant p53R(175)H and cyclinD1. Expression of HPV16 E6 caused an extended life span similar to expression of mutant p53R(175)H or p53 knockdown. Expression of mutant p53R(175)H seemed to cause additional activation of the hypoxia and WNT signaling pathways. HPV16 E7 expression had no direct effect on lifespan, similar to p16 knockdown or cyclinD1 expression. In combination with HPV16 E6 or other functional inactivations of p53, abrogation of the pRb-pathway by either HPV16 E7 or other manipulations caused an immortal phenotype. Our data show the causative role of HPV16 E6/E7 in early squamous carcinogenesis. Activity of each gene could be mimicked by other genetic events frequently found in HNSCC without HPV. This data provides the experimental proof of causal association of HPV in HNSCC carcinogenesis and further support the crucial role of the p53- and pRb-pathways.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Smeets SJ,van der Plas M,Schaaij-Visser TB,van Veen EA,van Meerloo J,Braakhuis BJ,Steenbergen RD,Brakenhoff RHdoi
10.1002/ijc.25474subject
Has Abstractpub_date
2011-04-01 00:00:00pages
1596-605issue
7eissn
0020-7136issn
1097-0215journal_volume
128pub_type
杂志文章abstract::Changes in the expression of a cell membrane antigen during hepatocarcinogenesis and in the developing liver were analyzed by HAM.4, a monoclonal antibody (MAb) against a membrane glycoprotein of normal rat hepatocyte. Of the precancerous lesions observed during hepatocarcinogenesis induced by diethylnitrosamine, 2-ac...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910410418
更新日期:1988-04-15 00:00:00
abstract::We have previously produced a monoclonal antibody (MAb) against TMK-1 cells, a poorly differentiated stomach-cancer cell line, and designated the antigen as 9A3. Immunohistochemical analysis of various tumor tissues revealed that the expression of 9A3 antigen is specific for human adenocarcinoma. In the present study,...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910480115
更新日期:1991-04-22 00:00:00
abstract::Little research has been conducted on the long-term value of human papillomavirus (HPV) testing after conization. We investigated whether cytology adds to the value of a negative HPV test for long-term prediction of cervical intraepithelial neoplasia grade 2 or worse (CIN2+). In addition, we compared risk of CIN2+ fol...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.29673
更新日期:2015-12-15 00:00:00
abstract::Although early detection and systemic therapies have improved the diagnosis and clinical cure rate of breast cancer, breast cancer remains the most frequently occurring malignant cancer in women due to a lack of sufficiently effective treatments. Thus, to develop potential targeted therapies and thus benefit more pati...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.32922
更新日期:2020-07-15 00:00:00
abstract::It is considered that fruit and vegetable (F&V) protect against oesophagus and gastric cancer (GC). However, 2 recent meta-analyses suggest that the strength of association on GC seems to be weaker for vegetables than for fruit and weaker in cohort than in case-control studies. No evidence exists from cohort studies a...
journal_title:International journal of cancer
pub_type: 杂志文章,多中心研究
doi:10.1002/ijc.21678
更新日期:2006-05-15 00:00:00
abstract::In 584 consecutive patients with no previous history of cancer or polypectomy, 769 adenomas were excised endoscopically and classified retrospectively according to the following parameters: macroscopic growth pattern, size, histological type, grade of dysplasia, anatomical site, presence of adenocarcinoma (ADK), numbe...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910490406
更新日期:1991-10-21 00:00:00
abstract::We have recently shown that an adenovirus carrying REIC/Dkk-3 (Ad-REIC) exhibits a potent tumor-specific cell-killing function for various human cancers. It has also become evident that some human cancers are resistant to Ad-REIC-induced apoptosis. The aim of the present study was to determine the molecular mechanisms...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.24764
更新日期:2010-04-01 00:00:00
abstract::The light microscopic distinction between complex atypical hyperplasia (CAH) and invasive endometrioid carcinoma (UEC) on endometrial sampling is problematic and often has significant clinical implications. Using mouse models of endometrial tumorigenesis based on two of the most common molecular alterations found in p...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.24022
更新日期:2009-03-15 00:00:00
abstract::Ovarian cancer is the fourth most common cause of cancer deaths among females in the western world after cancer of the breast, colon and lung. The inability to control the disease within the peritoneal cavity is the major cause of treatment failure in patients with ovarian cancer. The majority of ovarian carcinomas ex...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.22297
更新日期:2007-02-01 00:00:00
abstract::Tumor toxins are recombinant, bifunctional proteins which comprise a tumor-cell-specific recognition domain and an enzymatic toxin domain. We have evaluated the in vivo effects of a tumor toxin that specifically recognizes the erbB-3 and erbB-4 receptors (HRG beta 1-ETA). High doses of HRG beta 1-ETA administered syst...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970317)70:6<682::aid-ijc
更新日期:1997-03-17 00:00:00
abstract::We investigated the marker profile of human ascitic and cultured mesothelial cells, and compared it to that of ovarian carcinoma cells which are related in terms of their histogenesis, unrelated colon carcinomas being used as reference. Mesothelial and ovarian carcinoma cells could not be distinguished by (intermediat...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910430619
更新日期:1989-06-15 00:00:00
abstract::Although multiple myeloma (MM) is predominantly a disease of the elderly, few studies have focused on the identification of prognostic factors in this group of patients. Four hundred twenty five MM patients >65 years were uniformly treated with chemotherapy (MP or VCMP/VBAD). Multivariate analysis identified 4 factors...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20491
更新日期:2004-12-10 00:00:00
abstract::The CpG island methylator phenotype (CIMP) is a distinct form of epigenomic instability. Many CIMP-high colorectal cancers (CRCs) with BRAF mutation are considered to arise from serrated pathway. We recently reported that microRNA-31 (miR-31) is associated with BRAF mutation in colorectal tumors. Emerging new approach...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.28920
更新日期:2014-12-01 00:00:00
abstract::Innate lymphoid cells (ILCs) promptly initiate cytokine responses to pathogen exposure in the mucosa and mucosal-associated lymphoid tissues. ILCs were recently categorized as being of the lymphoid lineage and have been classified into three groups. ILCs play important roles in immunity against pathogens, and an anti-...
journal_title:International journal of cancer
pub_type: 杂志文章,评审
doi:10.1002/ijc.29443
更新日期:2016-01-01 00:00:00
abstract::Breast carcinomas were examined by the immunoperoxidase technique using antisera specific for lymphocyte subsets, monocytes, NK cells and major histocompatibility antigens (HLA-A, -B, -C; Ia-like). Sixty-four per cent of the patients had a moderate or strong mononuclear cell infiltration, 77% of the patients without m...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910350610
更新日期:1985-06-15 00:00:00
abstract::Although aneuploidy is commonly observed in human cancers, the molecular mechanism underlying aneuploidization remains unclear. We used multiploid cancer model that had diploid and aneuploid cancer cells within the same cancerous tissue and attempted to detect specific epigenetic alterations associated with tumor cell...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.22847
更新日期:2007-10-01 00:00:00
abstract::The steady-state level of nucleophosmin/B23 mRNA decreased during berberine-induced (25 microg/ml, 24 to 96 hr) apoptosis of human leukemia HL-60 cells. A decline in telomerase activity was also observed in HL-60 cells treated with berberine. A stable clone of nucleophosmin/B23 overexpressed in HL-60 cells was selecte...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19990611)81:6<923::aid-ijc
更新日期:1999-06-11 00:00:00
abstract::In previous studies we showed that human sarcoma and melanoma cell lines synthesize and secrete into culture medium a glycoprotein, migrating in urea sodium dodecyl sulfate-polyacrylamide gel electrophoresis at Mr 140,000. It is not detected in cultures of the corresponding normal cells. Conditioned medium of the mela...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910370114
更新日期:1986-01-15 00:00:00
abstract::Emerging reports now implicate alterations of arachidonic acid (AA) metabolism with prostate carcinogenesis. To test this hypothesis, androgen-primed benign hyperplastic (BHC) and malignant tumorigenic (MTC) cells derived from the Lobund-Wistar rat model of autochthonous prostate adenocarcinoma were incubated with (14...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20245
更新日期:2004-08-20 00:00:00
abstract::The physiological stress response to surgery promotes wound healing and functional recovery and includes the activation of neural, inflammatory and proangiogenic signaling pathways. Paradoxically, the same pathways also promote metastatic spread and growth of residual cancer. Human and animal studies show that cancer ...
journal_title:International journal of cancer
pub_type: 杂志文章,评审
doi:10.1002/ijc.32820
更新日期:2020-06-15 00:00:00
abstract::The human MUC1 gene expresses at least 2 type 1 membrane proteins: MUC1/REP, a polymorphic high m.w. MUC1 glycoprotein often highly expressed in breast cancer tissues and containing a variable number of tandem 20 amino acid repeat units, and the MUC1/Y protein, which lacks this repeat array and, therefore, is not poly...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970529)71:5<741::aid-ijc
更新日期:1997-05-29 00:00:00
abstract::Oesophageal squamous cell carcinoma (ESCC) has markedly high incidence rates in Kenya and much of East Africa, with a dire prognosis and poorly understood aetiology. Consumption of hot beverages-a probable carcinogen to humans-is associated with increased ESCC risk in other settings and is habitually practiced in Keny...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.32032
更新日期:2019-06-01 00:00:00
abstract::661 bp coding for the carboxyl end of the large sub-unit of EBV ribonucleotide reductase was cloned into the pMal plasmid vector. Purified recombinant protein was tested in IgG and IgA ELISAs. For the IgG assay, 81 out of 100 NPC patients tested positive, whereas for the IgA assay, 60 tested positive. Among 100 normal...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910590604
更新日期:1994-12-15 00:00:00
abstract::Previous studies have proved that a certain acidic isoform of ferritin is specifically synthesized by the placenta and breast-cancer tissue. In this context it has been further reported that the determination of this so-called placental isoferritin (PLF) on the surface of a subset of peripheral lymphocytes is highly s...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910520213
更新日期:1992-09-09 00:00:00
abstract::Southern blot analyses of surgical specimens of cervical carcinoma from Japanese patients showed that 3/9 samples contained human papillomavirus (HPV) type-16 DNA sequences, and 2 contained HPV type-18 DNA sequences. By Northern blot analyses, RNA transcripts of HPV DNA sequences were demonstrated in some of the tissu...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910370405
更新日期:1986-04-15 00:00:00
abstract::5-Fluorouracil (5-FU) is the major chemotherapeutic component for colorectal cancer (CRC) and other types of solid tumours. Resistance of cancer cells to 5-FU is considered the major obstacle for successful chemotherapy. NF-kappaB is a transcription factor. Cancer cells with high NF-kappaB nuclear activity demonstrate...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.10972
更新日期:2003-04-20 00:00:00
abstract::In our study, we aimed to investigate the expression of N-cadherin and E-cadherin and their dependency on epithelial-mesenchymal transition regulators SNAI1, SIP1 and TWIST in human colon cancer. Expression of E-cadherin and N-cadherin was examined by immunohistochemistry in 80 colon carcinomas by using paraffin embed...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20317
更新日期:2004-09-20 00:00:00
abstract::In order to target NK cells against the Hodgkin's-derived cell line L540, we developed bispecific monoclonal antibodies (Bi-MAbs) by somatic hybridization of the 2 mouse hybridoma cell line HRS-3 and A9 which produce monoclonal antibodies (MAbs) with reactivity against the Hodgkin and Reed-Sternberg cell-associated CD...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910550523
更新日期:1993-11-11 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::Breast cancer is the cancer diagnosed most frequently in women worldwide. In Europe it is the most common cancer in the female population, with approximately 350,000 new cases diagnosed each year including 130,000 deaths. Incidence rates are increasing in the majority of European countries, whereas a decline in mortal...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20514
更新日期:2004-12-20 00:00:00