Abstract:
:We analyzed the p53 mutational status, mRNA and protein expression in 24 human breast carcinoma cell lines. Following measurement of their DNA content with flow cytometry, we ascertained the copy numbers of the centromere of chromosome 17 (cen17) and p53 with fluorescence in situ hybridization (FISH). A functional yeast assay (FASAY) was used to screen for inactivating mutations. Positive results were subsequently verified by DNA sequencing. Finally, we assessed the mRNA expression with a competitive reverse transcription-polymerase chain reaction (RT-PCR) assay and the protein expression with immunocytochemical staining, western blot, and quantitative flow cytometry. The DNA content of the cell lines ranged from 0.85 to 2.58. Nine cell lines had concordant copy numbers (between two and four) of p53 and cen17, whereas 12 had more, and three less cen17 than p53 copies. The FASAY was successful in all but one cell line and revealed the presence of mutated alleles in 16 of them, 13 cell lines expressed only the mutated, and three both the mutated and the wild-type alleles. The mutations were comprised of 11 missense, two nonsense, and three frameshift mutations. Immunocytochemical staining, western blot and quantitative flow cytometry yielded comparable p53 protein expression results. However, both the mRNA and the protein expression levels varied considerably in the different cell lines and no consistent pattern with regard to the respective p53 mutational status became evident. The results obtained in these breast carcinoma cell lines indicate that no clear-cut linear relationship exists between the p53 mutational status and the extent of its respective mRNA and protein expression. Therefore, direct DNA analyses and functional assays remain the only methods for the reliable detection of p53 mutations.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Concin N,Zeillinger C,Tong D,Stimpfl M,König M,Printz D,Stonek F,Schneeberger C,Hefler L,Kainz C,Leodolter S,Haas OA,Zeillinger Rdoi
10.1023/a:1023351717408subject
Has Abstractpub_date
2003-05-01 00:00:00pages
37-46issue
1eissn
0167-6806issn
1573-7217journal_volume
79pub_type
杂志文章abstract::Although younger women with breast cancer have the most to gain from receipt of optimal care, few data are available regarding their receipt of locoregional breast cancer treatments. We identified 317,596 women aged 18-64 who were diagnosed with invasive breast cancer at hospitals reporting to the National Cancer Data...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-2156-8
更新日期:2012-10-01 00:00:00
abstract:BACKGROUND:Vinorelbine (Navelbin; N) has proven to be active in patients with advanced breast cancer (ABC) and cyclophosphamide (C) and epirubicin (Epiadriamycin: E) are still among the main cytostatic agents against this tumor. On this basis was carried out a study to determine the activity and toxicity of the combina...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1023/a:1006477109230
更新日期:2000-07-01 00:00:00
abstract:PURPOSE:Myeloperoxidase (MPO) is an enzyme secreted by neutrophil granulocytes as a result of phagocytosis during inflammation. In colorectal cancer, tumour infiltration by MPO expressing cells has been shown to be independently associated with a favourable prognosis. In this study, we explored the role of MPO-positive...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05336-3
更新日期:2019-10-01 00:00:00
abstract::A number of endocrine treatments for advanced breast cancer seem to affect serum insulin-like growth factor I (IGF-I). The aim of our study was to investigate IGF-I levels in 33 postmenopausal patients with metastatic disease receiving the selective aromatase inhibitor 4-hydroxyandrostenedione: 250 mg (16 patients) or...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/BF00666055
更新日期:1994-01-01 00:00:00
abstract::Proteins can be efficiently introduced into cells when fused to a protein transduction domain, such as Tat from the human immunodeficiency virus. We recently reported that dendritic cells transduced with a Tat fusion protein containing the extracellular domain of Her2/neu (Tat-Her2/neu) induced CD8 cytotoxic T lymphoc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-005-0450-4
更新日期:2005-06-01 00:00:00
abstract::This retrospective study investigates the correlation of intra-individual HER2 status between primary breast cancers and corresponding recurrences in a population derived cohort. The REMARK criteria were used as reference. In 151 breast cancer patients, primary tumors were analyzed for HER2 status on histopathology se...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1029-2
更新日期:2011-01-01 00:00:00
abstract::Estrogen receptor beta (ERbeta) is widely expressed in mammary epithelium. ERbeta expression is reported to decline during carcinogenesis of the breast and other tissues. In this study, we examined the consequences of a loss of ERbeta expression in mammary epithelial cells. We knocked down ERbeta transcript levels in ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0413-2
更新日期:2010-04-01 00:00:00
abstract::Whether wide excision with margins ≥1 cm is sufficient treatment for small low- or intermediate-grade ductal carcinoma in situ (DCIS) is unclear. This is an updated analysis of a phase II, single-arm, prospective trial testing this hypothesis. A total of 158 patients with low- or intermediate-grade DCIS who underwent ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2813-6
更新日期:2014-01-01 00:00:00
abstract::MicroRNAs play a role in breast cancer development and progression by post-transcriptional repression of the expression of important genes, such as the tumor suppressor gene phosphatase and tensin homolog (PTEN). The focus of the current study was to examine the diagnostic potential of circulating cell-free microRNAs ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-1988-6
更新日期:2012-08-01 00:00:00
abstract::Numerous independent groups from a range of countries have reported a high prevalence of Mouse Mammary Tumour Virus (MMTV)-like env sequences in human breast cancer specimens, including a prevalence of almost 40% in Australia. MMTV-like sag sequences and a completely integrated provirus have also been described. Recen...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-0946-4
更新日期:2011-01-01 00:00:00
abstract::Whether or not breast cancer can be a feature of the hereditary nonpolyposis colorectal cancer (HNPCC) syndrome has been debated. In order to clarify if defective mismatch repair (MMR) may indeed play a role in breast cancer, we used the Danish HNPCC register to identify all breast cancers that occurred in MMR gene mu...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0449-3
更新日期:2010-04-01 00:00:00
abstract:PURPOSE:We investigated the oncologic outcomes by intrinsic subtype and age in young breast cancer patients and whether survival differences were related to treatment changes over time. METHODS:A retrospective analysis was performed on 9633 invasive breast cancer patients treated at Asan Medical Center from January 19...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4331-4
更新日期:2017-09-01 00:00:00
abstract::Obese breast cancer survivors have increased risk of recurrence and death compared to their normal weight counterparts. Rural women have significantly higher obesity rates, thus weight control intervention may be a key strategy for prevention of breast cancer recurrence in this population. This one-arm treatment study...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1007/s10549-011-1922-3
更新日期:2012-04-01 00:00:00
abstract::The majority of breast cancer deaths are because of ineffective treatment of metastatic disease. We previously identified a subpopulation of cells in human breast cancer cell lines that demonstrate high activity of aldehyde dehydrogenase (ALDH) and high expression of CD44. These ALDH(hi)CD44(+) cells displayed enhance...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1692-y
更新日期:2012-05-01 00:00:00
abstract:PURPOSE:The main objectives of this study were to identify risk factors for local in-breast tumor recurrence after breast-conservation and to evaluate the impact of IBTR (in-breast tumor recurrence) on overall survival. METHODS:A total of 335 consecutive patients with 346 invasive and in situ breast cancers were treat...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章
doi:10.1007/s10549-008-0187-y
更新日期:2009-07-01 00:00:00
abstract::This phase II study of liarozole fumarate (R85246, liarozole), a novel imidazole with retinomimetic and aromatase inhibitory effects, was designed to determine the efficacy and tolerability in postmenopausal women with advanced breast cancer in progression, to correlate these effects with hormonal levels, and to evalu...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章
doi:10.1023/a:1006320122711
更新日期:2000-01-01 00:00:00
abstract::Previous investigations into the relationship of CAG-repeat lengths in the androgen receptor (AR) gene to female breast cancer (BC) have yielded somewhat confusing results. Decreased AR transactivational activity lowers androgen:estrogen balance, and may thereby effect functional hyperestrogenicity. This may promote t...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1012942910375
更新日期:2001-11-01 00:00:00
abstract:PURPOSE:Extending adjuvant endocrine therapy (ET) beyond 5 years has been shown to improve outcomes in breast cancer; however, limited data are available about if and why women pursue extended ET. The primary objective was to estimate the proportion of women who were willing to receive extended ET if recommended by the...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05145-8
更新日期:2019-05-01 00:00:00
abstract:PURPOSE:To determine if response to endocrine therapy of breast cancer can be predicted by either a metabolic "flare reaction" detected by positron emission tomography (PET) with 2-[(18)F]-fluoro-2-deoxyglucose (FDG), induced by an estradiol challenge, or by estrogen-receptor (ER) status, determined by PET with the est...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-008-9953-0
更新日期:2009-02-01 00:00:00
abstract:PURPOSE:Chemotherapy-induced peripheral neuropathy (CIPN) is a common, debilitating side effect in cancer survivors. This study aimed to assess the characteristics of quantitative sensory testing (QST) and its correlation with patient-reported outcomes (PROs) in cancer patients with and without CIPN. METHODS:We conduc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-06079-2
更新日期:2021-01-28 00:00:00
abstract::Lysyl oxidase-like 2 (LOXL2) is associated with invasiveness and metastasis in breast cancer. We analyzed the prognostic impact of LOXL2 for breast cancer patients and investigated the role of LOXL2 in breast cancer cell lines. Immunohistochemical study of LOXL2 expression was done in samples from 309 patients. Surviv...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2662-3
更新日期:2013-08-01 00:00:00
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journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-004-5783-x
更新日期:2005-05-01 00:00:00
abstract::The effect of obesity and fat distribution on survival of breast cancer patients was studied prospectively in 241 women with a natural menopause who participated in a breast cancer screening project, the DOM-project in Utrecht, The Netherlands. Mean follow-up time was 9.1 years and endpoint of interest was death from ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF00665785
更新日期:1995-05-01 00:00:00
abstract::Electron paramagnetic resonance (EPR) imaging is an emerging modality that can detect and localize paramagnetic molecular probes (so-called spin probes) in vivo. We previously demonstrated that nitroxide spin probes can be encapsulated in liposomes at concentrations exceeding 100 mM, at which nitroxides exhibit a conc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-009-0715-4
更新日期:2010-11-01 00:00:00
abstract::In 1973, McGuire and Chamness (In: O'Malley BW and Means AR (ed) Receptors for Reproductive Hormones, Plenum Press) summarized their work on the estrogen receptor in animal and human breast tumors, and in so doing described a target for therapeutic intervention. At that time there were no clinically useful antiestroge...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00713399
更新日期:1995-01-01 00:00:00
abstract::We report the establishment of a breast epithelial cell model that undergoes growth arrest at different stages of the cell cycle depending upon the DNA damaging agents encountered. Primary breast epithelial cells from normal reductive mammoplasty were grown in low-calcium culture medium. Free-floating cells under this...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9173-4
更新日期:2006-08-01 00:00:00
abstract::The purpose of this meta-analysis was to analyze the available evidence concerning the effects of depression on non-adherence to adjuvant endocrine therapy (AET) in women with breast cancer. MEDLINE and PsycInfo databases from inception through May 1, 2015 were searched using terms related to AET adherence. Articles w...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析,评审
doi:10.1007/s10549-015-3471-7
更新日期:2015-07-01 00:00:00
abstract::Mitogenic and growth inhibitory signals influence the activity of a family of cyclin dependent kinases (cdks). p27 is an important cdk inhibitor, acting in G1 to inhibit cyclin-cdks. As negative growth regulators, the cdk inhibitors may function as tumor suppressors. While the p16 gene plays a tumor suppressor role in...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1023/a:1006154900130
更新日期:1998-01-01 00:00:00
abstract:BACKGROUND:Anastrozole, a new aromatase inhibitor, has been used to treat postmenopausal metastatic breast cancer, and several clinical trials of adjuvant treatment using this agent are ongoing. However, the effects of anastrozole on lipid metabolism are unknown. The aim of this study was to evaluate the effect of anas...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1020571617274
更新日期:2002-11-01 00:00:00
abstract::Mammographic density is a strong risk factor for breast cancer; however the mechanism that underlies this association is unclear. We hypothesized that measures of energy balance early in life and in adulthood may be associated with mammographic density. We conducted a cross-sectional analysis of 1,398 women in the Nur...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9631-7
更新日期:2008-05-01 00:00:00