Abstract:
:The growth properties of a human melanoma cell line (MeWo) and of a variant (MeWo-LC1) endowed with higher metastatic potential in nude mice were compared using hormonally-defined serum-free media. The two cell lines failed to arrest in G0 following serum deprivation, and responded to INS and MSA but not to EGF, PDGF or FGF. Only MeWo-LC1 cells divided persistently in completely serum-free medium, and formed a high percentage of spheroids in agarose supplemented or not with serum or individual growth factors. The conditioned media of serum-free cultures of MeWo and MeWo-LC1 cells exhibited mitogenic activities. These were detected without prior concentration, fractionation or acid treatment. They stimulated DNA replication into sparse monolayers of autologous (MeWo, MeWo-LC1) or homologous (SK-MEL28 melanoma) cells and into NRK-49F normal rat fibroblasts, and acted in synergy with INS in a dose-dependent manner. Over a period of 5 days in culture, MeWo-LC1 cells produced bioactive material at a 2 to 3-fold higher rate than MeWo cells, in both the absence and presence of INS. MeWo-LC1-conditioned medium promoted or enhanced colony formation of MeWo and NRK-49F cells plated in serum-free (+/- INS) agarose. The two cell lines expressed the same amount of NGF and EGF receptors. On the basis of these results we suggest that: (i) MeWo and MeWo-LC1 melanoma cells have obviated allocrine stimulation of the division process characteristic of normal cells by responding to their own mitogens; (ii) some of these mitogens are akin to TGFs; (iii) the less efficient synthesis of autostimulatory factors by MeWo cells may account for their weaker proliferative capacity in vitro, and possibly in vivo.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Sauvaigo S,Fretts RE,Riopelle RJ,Lagarde AEdoi
10.1002/ijc.2910370120subject
Has Abstractpub_date
1986-01-15 00:00:00pages
123-32issue
1eissn
0020-7136issn
1097-0215journal_volume
37pub_type
杂志文章abstract::Transforming growth factor-beta (TGF-beta1) is a potent negative regulator of cell growth that transduces signals through interactions with type I and II receptors. Abnormal expression and mutational alterations of these receptors have been observed in several human malignancies. In this study, we investigated the exp...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970516)71:4<573::aid-ijc
更新日期:1997-05-16 00:00:00
abstract::In mammals, transforming growth factor-beta (TGF-beta) is found in 3 highly homologous isoforms that exert their effects via heteromeric complexes of type-I and type-II receptors (TbetaR-I and TbetaR-II). TGF-beta regulates the growth and metabolism of various cell types, including keratinocytes. We have investigated ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19970516)71:4<505::aid-ijc
更新日期:1997-05-16 00:00:00
abstract::Human leukocyte antigen (HLA)-G acts as negative regulator of the immune responses and its expression in tumor cells may enable them to escape immunosurveillance. The purpose of this study was to investigate the influence of HLA-G polymorphism on risk of high-grade cervical intraepithelial neoplasia (HG-CIN) and cervi...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.27356
更新日期:2012-08-01 00:00:00
abstract::Viruses that replicate selectively in cancer cells hold considerable promise as novel therapeutic agents for the treatment of malignancy. We report an orthotopic model of multi-focal colorectal cancer (CRC) metastases in the livers of syngeneic and immune-competent rats, which permitted rigorous testing of oncolytic v...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20772
更新日期:2005-04-20 00:00:00
abstract::Sulfotransferase (SULT) 1A1 detoxifies and bioactivates a broad spectrum of substrates including xenobiotics. It has been suggested that the SULT1A1 his (histidine) allele, which is caused by a his for arg (arginine) substitution due to a G-->A transition at codon 213, carries a significantly higher risk for women to ...
journal_title:International journal of cancer
pub_type: 杂志文章,多中心研究
doi:10.1002/ijc.10805
更新日期:2003-01-01 00:00:00
abstract::Wilms' tumor development, like most tumors, involves multiple genetic alterations affecting diverse genes. Only one of these has thus far been identified, the Wilms' tumor 1 (WT1) gene on 11p13, which functions as a tumor suppressor gene. We assessed the involvement of the WT1 gene constitutionally and somatically in ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910630410
更新日期:1995-11-15 00:00:00
abstract::Comparisons of patients receiving different cancer treatments reflect the effects of both treatment and patient selection. In breast cancer, however, if radiotherapy decisions are unrelated to laterality, comparisons of left-sided and right-sided cancers can demonstrate the causal effects of higher-versus-lower cardia...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.32908
更新日期:2020-09-01 00:00:00
abstract::Using a microarray technique, we found decorin to be underexpressed, but osteopontin (OPN) to be overexpressed, in esophageal squamous cell carcinoma (ESCC). This study aims to examine whether plasma decorin and OPN plus personal substances use (tobacco, alcohol and areca) can serve as suitable clinical markers to pre...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.25239
更新日期:2010-11-01 00:00:00
abstract::PDT has been reported to induce cancer cell expression of cytokines, such as IL-6 and TNF-alpha, but it has been unclear whether cytokine expression by cancer cells is directly related to the antitumor effect of PDT. We treated Lewis lung carcinoma (LLC) cells with a new photosensitizer, mono-L-aspartyl chlorin e6 (NP...
journal_title:International journal of cancer
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doi:10.1002/ijc.1374
更新日期:2001-08-15 00:00:00
abstract::The ability of verapamil to overcome resistance to adriamycin in a multidrug-resistant derivative of the V79 cell line (LZ), grown as multicellular spheroids or as monolayers, was examined. Verapamil was much less effective in overcoming resistance to adriamycin in spheroids than in monolayers. Verapamil increased the...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910590222
更新日期:1994-10-15 00:00:00
abstract::We report the incidence of cervical intraepithelial neoplasia (CIN) among HIV-infected women who did not have any colposcopic or histopathological evidence of CIN at baseline. Of the 1,023 women without any CIN at baseline, 855 (83.6%) have been followed up to a maximum of 6.4 years contributing 2,875 person years of ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.31826
更新日期:2019-03-01 00:00:00
abstract::The most recent data available demonstrate a 120-fold difference between the lowest and highest incidence rates of prostatic cancer, the disease being very common in North America, particularly among Blacks, and in Scandinavia, while it is rare in Japan and other oriental countries. The highest mortality for prostatic...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910330210
更新日期:1984-02-15 00:00:00
abstract::Our previous clinicopathologic study revealed an inverse association of liver metastasis of colorectal cancer and stromal expression of matrix metalloproteinase-9 (MMP-9) or urokinase receptor (uPAR). This suggests that host cells, particularly macrophages, expressing matrix-degrading enzymes/factors could be protecti...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(20000401)86:1<24::aid-ijc4
更新日期:2000-04-01 00:00:00
abstract::Several pathways have been implicated in the pathogenesis of endometrial carcinoma. Based on recent reports, BRAF mutations provide an alternative route for activation of the RAS signalling pathway. The CDKN2A (p16) tumour suppressor gene is also altered in several tumour types. We therefore wanted to assess the patte...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.20702
更新日期:2005-07-20 00:00:00
abstract::The effect of linoleic acid (LA) on growth and transformation of IEC6 intestinal cells was examined. IEC6 cells expressed mRNAs of 15-lipooxygenase (LOX15) and peroxisome proliferator-activated receptor (PPAR)gamma but not COX-2. Cell growth was suppressed by LA in a dose-dependent manner in IEC6 cells. Three-week tre...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.21393
更新日期:2006-02-01 00:00:00
abstract::The melanosomal protein TRP2 expressed by melanocytes and most melanoma cells is an attractive, clinically relevant model antigen for the experimental development of melanoma immunotherapy in mice. A peptide shared by murine and human TRP2 can be recognized by melanoma-reactive CTL in C57BL/6 mice, as well as in human...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(20000401)86:1<89::aid-ijc1
更新日期:2000-04-01 00:00:00
abstract::Extracts were made from Walker 256 carcinoma, spontaneous rat mammary adenocarcinoma, Wilms' tumour, human neuroblastoma and human haemangioma. Chromatography of the extracts on Sephadex G-100 yielded four fractions, A, B, C and D. Injection of fractions B and C resulted in the growth of new capillaries in the subcuta...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910170502
更新日期:1976-05-15 00:00:00
abstract::Oncostatin M is a leukocyte product that has been reported to have anti-proliferative effects directly on melanoma and other cancer cell lines in vitro. However, its function(s) in cancers in vivo appears complex and its roles in cancer growth in lungs are unknown. Here, we show that OSM promotes marked growth of tumo...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.29055
更新日期:2015-02-15 00:00:00
abstract::Several changes in smoking patterns over the past decades in Spain can be expected to result in a shift in lung-cancer mortality rates. We examined time trends in lung-cancer mortality from 1973-1997 using a log-linear Poisson age-period-cohort model. The standardized lung-cancer mortality rate for men almost doubled,...
journal_title:International journal of cancer
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abstract::Artemisia asiatica Nakai has been used in traditional Asian medicine for the treatment of inflammatory and other disorders. Previous studies have revealed that the formulated ethanol extract (DA-9601) of A. asiatica has pronounced antioxidative and antiinflammatory activities and exhibits cytoprotective effects agains...
journal_title:International journal of cancer
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journal_title:International journal of cancer
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更新日期:2014-12-15 00:00:00
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journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.2910620219
更新日期:1995-07-17 00:00:00
abstract::The influence of polyunsaturated fatty acids (PUFAs) on risk of colorectal cancer precursors remains largely unknown. We examined the associations of erythrocyte PUFAs, including n-3 and n-6 PUFAs, with risk of colorectal conventional adenomas and serrated polyps in 4517 participants from three US prospective cohorts ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/ijc.33190
更新日期:2021-01-01 00:00:00
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journal_title:International journal of cancer
pub_type: 杂志文章
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更新日期:2010-08-01 00:00:00
abstract::The purpose of our study was to investigate a novel therapeutic approach for rhabdomyosarcoma (RMS) in an animal model. The pursuit of new therapeutic modalities for RMS is critically important since this type of tumor is the most common soft tissue sarcoma in children and because patients with metastatic disease may ...
journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(SICI)1097-0215(19961127)68:5<596::AID-IJC
更新日期:1996-11-27 00:00:00
abstract::Nude athymic rats of Rowett genetic background were injected subcutaneously with cells from a poorly differentiated human pulmonary adenocarcinoma, following propagation in nude mice. The tumour cells were obtained by thoracentesis and by pleural biopsy during thoracoscopy. So far, we have heterotransplanted 13 differ...
journal_title:International journal of cancer
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abstract::Abnormal survivin expression has been reported to be involved in many types of cancer. A single-nucleotide polymorphism (SNP), C-31G, located in the promoter region of survivin reportedly may alter the mRNA level, while the significance of the nonsynonymous SNP A9194G in exon 4 has not yet been clarified. Here, the as...
journal_title:International journal of cancer
pub_type: 杂志文章
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journal_title:International journal of cancer
pub_type: 杂志文章
doi:10.1002/(sici)1097-0215(19971009)73:2<187::aid-ijc
更新日期:1997-10-09 00:00:00
abstract::Malignant gliomas recur even after extensive surgery and chemo-radiotherapy. Although a relatively novel chemotherapeutic agent, temozolomide (TMZ), has demonstrated promising activity against gliomas, the effects last only a few months and drug resistance develops thereafter in many cases. It has been acknowledged th...
journal_title:International journal of cancer
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更新日期:2012-01-15 00:00:00
abstract::Kidney cancer often diagnosed at late stages when treatment options are severely limited. Thus, greater understanding of tumor metabolism leading ultimately to novel approaches to diagnosis is needed. Our laboratory has been utilizing metabolomics to evaluate compounds appearing in kidney cancer patients' biofluids at...
journal_title:International journal of cancer
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