Abstract:
:[3H]Tamoxifen Aziridine ([3H]TAZ) is a derivative of the antiestrogen tamoxifen that covalently labels the Estrogen Receptor (ER), and perhaps other uncharacterized proteins. In a previous article we described that [3H]TAZ binds to a cytosolic protein from human uterine tissues that shares some, but not all, the ER properties. Here we have extended these studies to [3H]TAZ binding to cytosol proteins from human breast cancer specimens, and studied its quantitative association with other molecular markers and clinico-pathological variables. Cytosols were obtained in hypotonic buffer containing 20 mM molybdate and protease inhibitors, incubated with [3H]TAZ, and subjected to Sucrose Gradient Analysis (SGA). A [3H]TAZ labeled peak that consistently migrated with the 4S fractions was found in most of the assayed cytosols (range of 0 to 1278 fmol/ mg p.). The 4S peak of [3H]TAZ was partially inhibited by both estrogens and antiestrogens. When [3H]E2 was used instead of [3H]TAZ, only an 8S peak was detected. [3H]TAZ was covalently bound to a protein with an apparent MW of 65 kDa, as determined by SDS-PAGE and fluorography. The mean of [3H]TAZ binding was significantly higher in the subgroups of samples classified as ER-, PR-, pS2- or cathepsin D-, than in the respective positive subgroups (P < 0.01 in all the cases). [3H]TAZ binding was not associated with clinico-pathological variables, except that its mean was significantly larger in tumors larger than 5 cm than in smaller tumors. These results, and those previously reported, suggest that: 1) [3H]TAZ labels a cytosolic protein present in human breast cancers and uterine tissues that does not share all the ER properties, and 2) the [3H]TAZ binding by breast cancer cytosols is negatively associated with markers of estrogenic dependency, and its quantification may provide valuable information on antiestrogen responsiveness of a given tumor.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Navarro D,Doreste H,Cabrera JJ,Morales M,Díaz-Chico JC,Díaz-Chico BNdoi
10.1023/a:1006062510883subject
Has Abstractpub_date
1998-07-01 00:00:00pages
155-66issue
2eissn
0167-6806issn
1573-7217journal_volume
50pub_type
杂志文章abstract::Five-year breast cancer survivors, diagnosed after 65 years of age, may develop more incident comorbidities than similar populations free of cancer. We investigated whether older breast cancer survivors have a similar comorbidity burden 6-15 years after cancer diagnosis to matched women free of breast cancer at start ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-014-3021-8
更新日期:2014-07-01 00:00:00
abstract:PURPOSE:Fiber rich foods and dairy products have been suggested to be associated with breast cancer prognosis, though existing research is limited and either report on pre- or post-diagnostic dietary intake in relation to breast cancer prognosis. We investigated the associations between intake of whole grain (WG) and d...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05497-1
更新日期:2020-02-01 00:00:00
abstract::Triple-negative breast cancers lack estrogen receptor α (ERα), progesterone receptor, and do not overexpress human epidermal growth factor receptor 2 (Her-2). They are neither susceptible to endocrine therapy nor to a therapy using the anti-Her-2 antibody, trastuzumab. Therefore, an efficient targeted therapy is warra...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-1968-x
更新日期:2012-07-01 00:00:00
abstract:PURPOSE:To explore the ability of intraoperative specimen radiography (SR) to correctly identify positive margins in patients receiving breast conserving surgery (BCS). To assess whether the reoperation rate can be reduced by using this method. METHODS:This retrospective study included 470 consecutive cases receiving ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究
doi:10.1007/s10549-019-05476-6
更新日期:2020-01-01 00:00:00
abstract::Although a significant proportion of familial aggregation of breast cancer remains unexplained, many of the currently known breast cancer susceptibility genes, including BRCA1, BRCA2 and TP53, play a role in maintaining genome integrity by engaging in DNA repair. RAD51L1 is one of the five RAD51 paralogs involved in h...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1539-6
更新日期:2011-08-01 00:00:00
abstract::miRNAs regulate the expression of genes in both normal physiology and disease. While miRNAs have been demonstrated to play a pivotal role in aspects of cancer biology, these reports have generally focused on the regulation of single genes. Such single-gene approaches have significant limitations, relying on miRNA expr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-014-3004-9
更新日期:2014-07-01 00:00:00
abstract::The purpose of this article is to comprehensively summarize the associations between carotenoids and breast cancer and quantitatively estimate their dose-response relationships. We searched PubMed, Embase, and Cochrane databases (from January 1982 to 1 May 2011) and the references of the relevant articles in English w...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析
doi:10.1007/s10549-011-1723-8
更新日期:2012-01-01 00:00:00
abstract::Afatinib is an oral, ErbB family blocker, which covalently binds and irreversibly blocks all kinase-competent ErbB family members. This phase II, open-label, single-arm study explored afatinib activity in human epidermal growth factor receptor 2 (HER2)-positive breast cancer patients progressing after trastuzumab trea...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究
doi:10.1007/s10549-012-2003-y
更新日期:2012-06-01 00:00:00
abstract::Genetic testing enables women at risk for hereditary breast and/or ovarian cancer to find out whether they have inherited the gene mutation (BRCA1/BRCA2), and if so, to opt for frequent surveillance and/or prophylactic surgery (bilateral mastectomy and/or oophorectomy). Here, a follow-up is described for 63 healthy wo...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1015269620265
更新日期:2002-05-01 00:00:00
abstract::The epidermal growth factor system is a well characterized growth factor receptor pathway, the deregulation of which has been be associated with neoplastic growth. Overexpression or amplification of the epidermal growth factor receptor (EGFR) or one of its ligands has been linked with the malignant transformation of c...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/B:BREA.0000010702.10130.29
更新日期:2004-01-01 00:00:00
abstract:PURPOSE:Breast cancer brain metastases (BCBM) are becoming an increasingly common diagnosis due to improved systemic control and more routine surveillance imaging. Treatment continues to require a multidisciplinary approach managing systemic and intracranial disease burden. Although, improvements have been made in the ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-020-05552-2
更新日期:2020-04-01 00:00:00
abstract:PURPOSE:Ductal carcinoma in situ (DCIS) is well-known precursor of invasive ductal carcinoma (IDC). Parts of patients show recurrence as DCIS or IDC after local treatment, but there are no established markers predicting relapse. We analyzed changes in miRNA and oncogene expression during DCIS progression/evolution to i...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05192-1
更新日期:2019-07-01 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:PURPOSE:Although quality of life (QoL) improves over time for most breast cancer survivors (BCS), BCS may show different patterns of QoL. This study sought to identify distinct QoL trajectories among BCS and to examine characteristics associated with trajectory group membership. METHODS:BCS (N = 653) completed baselin...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-018-4677-2
更新日期:2018-05-01 00:00:00
abstract:BACKGROUND:Telomerase is a ribonucleoprotein enzyme that synthesises telomeres in human germ cells, embryogenesis and in cancer, maintaining chromosomal length, stability and cellular immortality. The hTERT gene is the rate-limiting determinant of telomerase reactivation during immortalization and malignant transformat...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9622-8
更新日期:2008-05-01 00:00:00
abstract:PURPOSE:Contralateral prophylactic mastectomy is increasing, despite unclear evidence of improving survival. To investigate the age-related risk factors for contralateral breast cancer (CBC). METHODS:This study included 8716 patients diagnosed with non-metastatic unilateral invasive breast cancer between 1989 and 2008...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-018-5031-4
更新日期:2019-02-01 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::The c.156_157insAlu BRCA2 mutation has so far only been reported in hereditary breast/ovarian cancer (HBOC) families of Portuguese origin. Since this mutation is not detectable using the commonly used screening methodologies and must be specifically sought, we screened for this rearrangement in a total of 5,443 suspec...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1036-3
更新日期:2011-06-01 00:00:00
abstract::Several independent studies have presented evidence for the involvement of human papillomaviruses (HPV) in the aetiology of human breast cancer, while others have reported the opposite findings. Here, we have analysed by a high sensitive multiplex PCR-based method the prevalence of alpha mucosal and beta cutaneous HPV...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-008-0040-3
更新日期:2009-04-01 00:00:00
abstract::The insulin-like growth factors (IGFs) are mitogens for many cancer cell types. In breast cancer cells, IGF-I and IGF-II have both been shown to stimulate cell proliferation. However, IGF-I mRNA has not been found in human breast cancer cell lines, making it unlikely that IGF-I is commonly expressed as an autocrine gr...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF01833330
更新日期:1992-01-01 00:00:00
abstract::There are suggestions in the literature that common variants in the XPD gene may be associated with an altered risk of melanoma and breast cancer. To establish if the XPD common variants Asp312Asn and Lys751Gln are associated with an increased melanoma or breast cancer risk we performed an association study based on g...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-005-9151-2
更新日期:2006-07-01 00:00:00
abstract::A study has been conducted to compare the nature and severity of post-operative sensory changes (sensory loss, paraesthesiae, and pain) among patients with breast cancer treated by either modified radical mastectomy or a conservative procedure (tumourectomy, axillary clearance, iridium implant, and external radiothera...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01805925
更新日期:1986-01-01 00:00:00
abstract::Adiponectin is one of the most important adipocytokines secreted from adipose tissue. In addition to its effects on glucose and fatty acid metabolism, it has been reported that adiponectin has a direct growth-inhibitory effect on breast cancer cells. However, it still remains to be established how adiponectin affects ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9874-3
更新日期:2008-12-01 00:00:00
abstract::Identifying risk factors for lymphedema in patients treated for breast cancer has become increasingly important, given the current lack of standardization surrounding diagnosis and treatment. Reports on the association of body mass index (BMI) and weight change with lymphedema risk are conflicting. We sought to examin...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2715-7
更新日期:2013-11-01 00:00:00
abstract:PURPOSE:Vitamin D (VD) metabolism regulates adipose tissue, lipogenesis inflammation, and tumor growth. CYP24A1 is the key enzyme for metabolic inactivation of active VD (1,25(OH)2D3). We examined whether common germline single nucleotide polymorphisms (SNPs) in the CYP24A1 gene could affect the association between adu...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05484-6
更新日期:2020-01-01 00:00:00
abstract:PURPOSE:To update and expand on data related to treatment, resource utilization, and costs by cancer stage in Canadian patients with hormone receptor-positive (HR+)/human epidermal growth factor receptor 2-negative (HER2-) breast cancer (BC). METHODS:We analyzed data for adult women diagnosed with invasive HR+/HER2- B...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05960-4
更新日期:2020-10-16 00:00:00
abstract::Currently, there are no applied molecular markers to aid in predicting risk of carcinoma in situ (CIS) progression to invasive cancer, and therefore, all women diagnosed with CIS undergo surgery. Standard assessment of protein expression in fixed tissue by immunohistochemistry (IHC) is not quantitative and hence is no...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1227-y
更新日期:2011-09-01 00:00:00
abstract::(-)-Epigallocatechin (EGC), one of green tea polyphenols, has been shown to inhibit growth of cancer cells. However its mechanism of action is poorly known. We show here that EGC strongly inhibited the growth of breast cancer cell lines (MCF-7 and MDA-MB-231) but not that of normal breast epithelial cells. The inhibit...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1020833410523
更新日期:2002-12-01 00:00:00
abstract:PURPOSE:Germline mutations in BRCA1 and BRCA2 confer a significant increase in risk for cancer, and determining pathogenicity of a BRCA variant can guide the clinical management of the disease. About 1/3 of BRCA1 variants reported in the public databases have uncertain clinical significance due to lack of conclusive ev...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4595-8
更新日期:2018-04-01 00:00:00
abstract::In this prospective study, the authors examined 50 patients with breast tumors (malignant, n = 32; benign, n = 18) to investigate the correlation between color Doppler flow mapping and histopathological findings and to evaluate the clinical significance of color Doppler mapping. Among the 32 patients with breast cance...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01806510
更新日期:1996-01-01 00:00:00