Abstract:
:Endocrine therapy is an important therapeutic approach for the treatment of oestrogen receptor (ER)-positive breast cancer. However, a number of these endocrine therapies can fail when the tumour loses its ER expression during treatment. To date, few studies have explored the potential clinical significance of traditional Chinese medicine in inducing the reversal of resistance to endocrine therapy in breast cancers. We used the ERα-negative MCF7 breast cancer cell line to create a tamoxifen (TAM)-resistant cell line, MCF7/TAM cells. After treating MCF7/TAM cells with ELE to induce the re-expression of ERα, we investigated the role and molecular mechanisms by which elemene (ELE) promotes the reversal of resistance to endocrine therapy. We discovered that treatment with 10 μg/ml ELE restored the sensitivity of MCF7/TAM cells to TAM. RT-PCR analysis revealed that ELE treatment upregulated ERα mRNA levels in MCF7/TAM cells, and immunohistochemistry confirmed the upregulation of ERα expression. Western blot analysis revealed that ELE treatment decreased the protein expression levels of Ras, MEK1/2 and p-ERK1/2 in MCF7/TAM cells. The loss of ERα expression was the primary reason for TAM resistance in MCF7 cells. The ELE-induced reversal of TAM resistance was mediated by the upregulation of ERα mRNA and the re-expression of ERα through the MAPK pathway.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Zhang B,Zhang X,Tang B,Zheng P,Zhang Ydoi
10.1007/s10549-012-2263-6subject
Has Abstractpub_date
2012-11-01 00:00:00pages
399-406issue
2eissn
0167-6806issn
1573-7217journal_volume
136pub_type
杂志文章abstract::To assess the impact of patient-provider communication on adherence to tamoxifen (TAM) and aromatase inhibitors (AIs) 36 months after breast cancer (BC) diagnosis in a low-income population of women. California statewide surveys were conducted among 921 low-income women with BC at 6, 18, and 36 months after BC diagnos...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-2387-8
更新日期:2013-02-01 00:00:00
abstract::To investigate the expression levels of CXCL10 and CXCR3 in tumors from breast cancer patients randomized to adjuvant tamoxifen treatment or no endocrine treatment, in order to further study the connection to prognosis and prediction of tamoxifen treatment outcome. Immunohistochemistry on tissue microarrays from 912 b...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10549-014-2933-7
更新日期:2014-05-01 00:00:00
abstract::Previous studies showing the presence of antibodies against tumor-associated antigens in healthy individuals suggest that antibody-dependent cell cytotoxicity (ADCC) might play a role in the development of breast cancer. We hypothesized that functional polymorphisms in fragment c gamma receptor (FcgR) genes were assoc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究
doi:10.1007/s10549-010-1109-3
更新日期:2011-04-01 00:00:00
abstract::Brain gray matter alterations have been reported in cross-sectional magnetic resonance imaging (MRI) studies of breast cancer patients after cancer treatment. Here we report the first prospective MRI study of women undergoing treatment for breast cancer, with or without chemotherapy, as well as healthy controls. We hy...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1088-4
更新日期:2010-10-01 00:00:00
abstract:PURPOSE:We sought to determine if bioimpedance spectroscopy (BIS) measurements can accurately assess changes in breast cancer-related lymphedema (BCRL) in patients undergoing lymphovenous bypass (LVB). METHODS:Patients undergoing LVB for BCRL refractory to conservative treatment from 1/2015 to 12/2018 were identified ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-020-06059-6
更新日期:2021-01-04 00:00:00
abstract::Recent breast cancer treatment studies conducted in large urban settings have reported racial disparities in the appropriate use of adjuvant chemotherapy. This article presents the first focused evaluation of black-white differences in receipt and completion of chemotherapy for breast cancer in a primarily rural regio...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1916-1
更新日期:2012-05-01 00:00:00
abstract::Intraoperative radiotherapy with electrons (ELIOT) after conservative surgery for breast carcinoma was introduced at the IEO in 1999 as a research programme. The results on 1,822 patients treated from January 2000 to December 2008 are reported. Women with unicentric primary breast carcinoma of less than 2.5 cm in the ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1115-5
更新日期:2010-11-01 00:00:00
abstract:PURPOSE:In the ACOSOG Z0011 trial, completing axillary lymph node dissection (cALND) did not benefit patients with T1-T2 cN0 early breast cancer and 1-2 positive sentinel lymph nodes (SLN) undergoing breast-conserving surgery (BCT). This paper reports cALND rates in the clinical routine for patients who had higher (T3-...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05876-z
更新日期:2020-11-01 00:00:00
abstract::A dose-response relationship has been suggested for medroxyprogesterone acetate in the treatment of advanced breast cancer. To determine the tolerability and efficacy of increasing doses of megestrol acetate in the treatment of metastatic breast cancer, we conducted a phase I/II study among 57 patients. Three patients...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章
doi:10.1007/BF01990033
更新日期:1991-08-01 00:00:00
abstract:PURPOSE:Triple-negative breast cancers (TNBC) are aggressive tumours that exhibit abundant lymphoid infiltrates which modulate tumour behaviour. Recent findings suggest that TNBC with higher densities of plasma cells are associated with a favourable prognosis, and tertiary lymphoid structures (TLS) have prognostic sign...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05548-y
更新日期:2020-04-01 00:00:00
abstract:PURPOSE:To examine DNA methylation as a mechanism linking diet, physical activity, weight status, and breast cancer risk. METHODS:Insufficiently active women of varying weight status, without a history of cancer, completed a maximal exercise test, clinical measurement of height and weight, and a dietary intake measure...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-017-4573-1
更新日期:2018-02-01 00:00:00
abstract:PURPOSE:T-box transcription factor 21 (T-bet), which is the master regulator of effector T-cell activation, is derived by stimulation of T-cell receptors. In this study, we focused on T-bet and examined the function of activated T cells. METHODS:This study included 242 patients with primary triple-negative breast canc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05256-2
更新日期:2019-08-01 00:00:00
abstract::Overexpression of CD24 is an independent prognostic factor for breast cancer. Recently, two polymorphisms in the CD24 gene were linked to disease risk and progression in autoimmune diseases. Here, we evaluated the clinical relevance of these polymorphisms with respect to their potential to predict a pathologic complet...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1007/s10549-011-1759-9
更新日期:2012-04-01 00:00:00
abstract::Neoadjuvant chemotherapy (NAC) is increasingly used for operable disease. However there are several pathological response classification systems and the correlation between the pathological response to NAC according to each system and the patient outcome is still under debate. From 1998 to 2006, 370 primary breast can...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-008-9935-2
更新日期:2009-01-01 00:00:00
abstract:PURPOSE:Triple-negative breast cancer (TNBC)/basal-like breast cancer (BLBC) is a highly aggressive form of breast cancer. We previously reported that a small molecule agonist ligand for the orphan nuclear receptor estrogen-related receptor beta (ERRβ or ESRRB) has growth inhibitory and anti-mitotic activity in TNBC ce...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-019-05485-5
更新日期:2020-02-01 00:00:00
abstract::Uncontrolled proliferation is one of the hallmarks of breast cancer. We have previously identified the human Ecd protein (human ortholog of Drosophila Ecdysoneless, hereafter called Ecd) as a novel promoter of mammalian cell cycle progression, a function related to its ability to remove the repressive effects of Rb-fa...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1946-8
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND:Breast cancer is characterized by malignant transformation of epithelial cells, but stromal cells also play an important role in tumorigenesis. While tumor-derived fibroblasts display unique phenotypic properties, it is unclear whether they also represent are a specific subpopulation. MATERIALS AND METHODS:...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9725-2
更新日期:2008-07-01 00:00:00
abstract::Psoriasin (S100A7) is a calcium-binding protein that has shown to be highly expressed in high-grade ductal carcinoma in situ (DCIS) and a subset of invasive breast cancers. However, its role in invasion and metastasis is not very well known. In this study, we have shown that S100A7 differentially regulates epidermal g...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2491-4
更新日期:2013-04-01 00:00:00
abstract::Our aim was to develop an accurate diagnostic system using gene expression analysis by means of DNA microarray for prognosis of node-negative and estrogen receptor (ER)-positive breast cancer patients in order to identify a subset of patients who can be safely spared adjuvant chemotherapy. A diagnostic system comprisi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-010-1145-z
更新日期:2011-08-01 00:00:00
abstract::A limited number of studies have associated adjuvant chemotherapy with structural brain changes. These studies had small sample sizes and were conducted shortly after cessation of chemotherapy. Results of these studies indicate local gray matter volume decrease and an increase in white matter lesions. Up till now, it ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1888-1
更新日期:2012-04-01 00:00:00
abstract:PURPOSE:To investigate the discordance between original and central laboratories in estrogen receptor (ER) status, in tumors originally deemed to be ER-negative, and in HER2 status in a diverse population-based sample. METHODS:In a follow-up study of 1785 women with Stage I-III breast cancer diagnosed between 2005 and...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-016-4061-z
更新日期:2017-01-01 00:00:00
abstract::Progression of breast cancer from an estrogen-dependent, slowly growing tumor amenable to tamoxifen treatment to an aggressive, metastatic, estrogen-independent phenotype has been mimicked by the transfection of MCF-7 breast carcinoma cells with fibroblast growth factors 1 or 4. FGF-transfected cells are aggressively ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01806082
更新日期:1996-01-01 00:00:00
abstract:PURPOSE:Mitochondrial unfolding protein are abundant in breast cancer cells, but the mechanism by which breast cancer cells resist apoptosis is still not fully elucidated. In this study, we explored the role of mitochondrial unfolded protein response (mtUPR)-related proteins in four types of breast cancer tissues. MET...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05729-9
更新日期:2020-08-01 00:00:00
abstract::There has been increasing interest in the role of cultural and ethnic factors in breast cancer risk perceptions and screening practices. This study examined ethnic differences in breast cancer risk perception in 112 African American and 224 white women ages 35 and older who had at least one first-degree relative diagn...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,多中心研究
doi:10.1007/BF01806000
更新日期:1996-01-01 00:00:00
abstract::Based on our previous findings that medroxyprogesterone acetate (MPA) significantly suppressed the formation of preneoplastic mammary hyperplastic alveolar nodules in mice, and that this suppression persisted for some time, we studied the effects of different schedules of MPA treatment on spontaneous mammary tumorigen...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01805741
更新日期:1988-09-01 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::Since our previous findings had indicated that the androgenic steroid medroxyprogesterone acetate (MPA) exerts potent inhibitory effects on 7,12-dimethylbenz(a)anthracene (DMBA)-induced tumor growth, we have studied the effect of low doses of MPA released from Depo-Provera and from 50:50 poly[DL-lactide-co-glycolide] ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/BF01961245
更新日期:1992-01-01 00:00:00
abstract::Dietary factors may influence the risk for breast cancer and also the prognosis following diagnosis and treatment. The aim of this study was to assess whether self-reported prediagnosis diet or other patient factors associated with breast cancer incidence were predictive of recurrence and survival. Patients (n = 149) ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1006190820231
更新日期:1999-02-01 00:00:00
abstract:PURPOSE:Dysregulation of HER2 signaling pathway in breast cancer is well documented. Our bioinformatics analysis predicted hsa-miR-512-3p (miR-512-3p) as a bona fide regulator of HER2 as well as HER3, PIK3R2, and AKT1 genes. Then, we intended to examine the effect of miR-512-3p on the predicted target genes that are in...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05937-3
更新日期:2021-01-01 00:00:00
abstract::We have evaluated tandem cycles of a tri-drug combination, termed CVP (cyclophosphamide, etoposide [VP-16], and cisplatin [Platinol]), at four levels in more than 300 patients with various types of tumors. Tandem CVP appears to be at least therapeutically equivalent to alternatives. A second potentially non-cross-resi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/BF00668354
更新日期:1993-01-01 00:00:00