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 cells and is correlated with poor prognosis in patients. PD 153035, a quinazoline, has been shown to inhibit the tyrosine kinase activity of EGFR by blocking ATP binding (Fry et al., Science 265: 1093-1095, 1994). We set out to determine whether the growth inhibition caused by this agent and five related compounds is a direct result of the blocking of EGFR signaling. The effects on cell proliferation produced by these agents were tested on several tumor cell lines and EC50 values obtained. The EGF responsive cell lines A-431 and MDA-MB-468 exhibit EC50 values of 3 and 6.7 micro M, respectively, for PD 153035 which was found to be the most potent. The agents were then tested for their ability to block the paradoxical high dose EGF induced inhibition of A-431 and MDA-MB-468 cell growth as well as EGF induced phosphorylation in A-431 cells. These compounds are able to completely block the effects of exogenously added EGF at 0.5 microM or less. However, higher doses (EC50's >or= 2 microM) were needed to block the growth of human tumor cell lines potentially implicating a second site of action for these compounds.
journal_name
Breast Cancer Res Treatjournal_title
Breast cancer research and treatmentauthors
Rae JM,Lippman MEdoi
10.1023/B:BREA.0000010702.10130.29subject
Has Abstractpub_date
2004-01-01 00:00:00pages
99-107issue
2eissn
0167-6806issn
1573-7217pii
5253142journal_volume
83pub_type
杂志文章abstract::To date, three molecular markers (ER, PR, and CYP2D6) have been used in clinical setting to predict the benefit of the anti-estrogen tamoxifen therapy. Our aim was to validate new biomarker candidates predicting response to tamoxifen treatment in breast cancer by evaluating these in a meta-analysis of available transc...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,meta分析
doi:10.1007/s10549-013-2622-y
更新日期:2013-07-01 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::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:In our microarray analysis we observed that Seven-in-Absentia Homolog 2 (SIAH2) levels were low in estrogen receptor (ER) positive breast tumors of patients resistant to first-line tamoxifen therapy. The aim of this study was to evaluate SIAH2 for its (a) predictive/prognostic value, and (b) functional role in ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-008-0125-z
更新日期:2009-07-01 00:00:00
abstract:BACKGROUND:Paget's disease of the breast is an uncommon presentation of breast malignancy, accounting for 1-3% of all the breast tumors and presents in different histopathologic patterns: in association with an underlying invasive or non invasive carcinoma, or without any underlying neoplasia. In the literature, differ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9880-5
更新日期:2008-12-01 00:00:00
abstract::We investigated the role of glial cell line-derived neurotrophic factor (GDNF) in compensating trastuzumab (TZMB)-induced apoptosis in HER2+ breast cancer (BC) cells using xenograft tumors. We generated BC xenografts in nude mice using samples from three patients selected based on their HER2 status and response to TZM...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-016-4078-3
更新日期:2017-04-01 00:00:00
abstract::Previous studies on breast cancer recurrence provide a mixed picture of the quality of life of women following a recurrence. To clarify the picture, the present study addresses some previous methodological concerns by offering a multidimensional assessment with follow-up, a matched comparison group of disease-free sur...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/B:BREA.0000041580.55817.5a
更新日期:2004-09-01 00:00:00
abstract:PURPOSE:The selective treatment of internal mammary lymph nodes (IMNs) in breast cancer is controversial. The purpose of this research was to determine the subpopulation patients with high risk of internal mammary lymph nodes metastasis who received extended radical mastectomy without any preoperative treatment from 19...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9561-4
更新日期:2008-02-01 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: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:PURPOSE:The Janus-associated kinase (JAK)/signal transducer and activator of transcription pathway is a key regulator of inflammatory signaling, associated with tumorigenesis, cell survival, and progression. This randomized phase 2 trial evaluated the efficacy and safety of the addition of ruxolitinib, a JAK1/JAK2 inhi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,随机对照试验
doi:10.1007/s10549-018-4770-6
更新日期:2018-08-01 00:00:00
abstract::Several authors question the potential benefit of preoperative magnetic resonance imaging (MRI) against the background of possible overdiagnosis, false-positive findings, and unnecessary resections in patients with newly diagnosed breast cancer. In order to reveal a better selection of patients who should undergo preo...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3556-3
更新日期:2015-10-01 00:00:00
abstract::EMSY is a putative oncogene amplified in a minority of breast carcinomas, its protein product interacts with and transcriptionally silences BRCA2. We hypothesized that breast tumors from BRCA2 mutation carriers would be less likely than other familial breast cancers to exhibit EMSY amplification. As EMSY is located on...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1380-y
更新日期:2011-06-01 00:00:00
abstract::BRCAness breast tumors represent a group of sporadic tumors characterized by a reduction in BRCA1 gene expression. As BRCA1 is involved in double-strand breaks (DSBs) repair, dysfunctional BRCA pathway could make a tumor sensitive to DNA damaging drugs (e.g., platinum agents). Thus, accurately identifying BRCAness cou...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-015-3648-0
更新日期:2016-01-01 00:00:00
abstract::Compelling evidence about the differences in the biology and behavior of invasive breast cancer between African-American (AA) and White-American (WA) women motivate inquiry into comparing the clinicopathology of non-invasive breast cancer (ductal carcinoma in situ, DCIS). AA and WA women diagnosed with their first pri...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1742-5
更新日期:2012-01-01 00:00:00
abstract::Expression of HOX transcript antisense intergenic RNA (HOTAIR)--a long non-coding RNA--has been examined in a variety of human cancers, and overexpression of HOTAIR is correlated with poor survival among breast, colon, and liver cancer patients. In this retrospective study, we examine HOTAIR expression in 164 primary ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-013-2776-7
更新日期:2013-12-01 00:00:00
abstract::A major goal of cancer chemotherapy is the identification of cytotoxic compounds that are highly selective for cancer cells. We describe here one such compound - a novel iron chelator, desferri-exochelin 772SM. This desferri-exochelin has unique chemical and pharmacological properties, including extremely high iron bi...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1012211828319
更新日期:2001-09-01 00:00:00
abstract::Magnetic nanoparticles (MNPs) possess unique properties, which make them highly attractive for medical applications. The use of MNPs in surgery has mainly been focused on their role in the identification of metastatic lymph node involvement. There have been developments within this field, including ongoing and newly c...
journal_title:Breast cancer research and treatment
pub_type: 社论
doi:10.1007/s10549-013-2801-x
更新日期:2014-01-01 00:00:00
abstract:PURPOSE:To determine the influence of race on breast cancer treatment and on recurrence and breast cancer specific death. PATIENTS AND METHODS:The study population consisted of 6,054 African-American or white women who were diagnosed with breast cancer and received at least one of the treatments including mastectomy o...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-006-9337-2
更新日期:2007-05-01 00:00:00
abstract:PURPOSE:To examine the outcomes of endocrine naive patients treated with tamoxifen as initial endocrine therapy for metastatic breast cancer. Data were obtained from the long-term follow-up of two previously published randomized trials. PATIENTS AND METHODS:All patients received tamoxifen 20 mg po in a single daily do...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1023/a:1005758127114
更新日期:1997-02-01 00:00:00
abstract::Droloxifene, a new antiestrogen, has theoretical advantages over tamoxifen based on preclinical data. These include higher affinity to the estrogen receptor, higher antiestrogenic to estrogenic ratio, and more effective inhibition of cell growth and division in ER positive cell lines, as well as less toxicity, includi...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1007/BF00689679
更新日期:1994-01-01 00:00:00
abstract:PURPOSE:The purpose of this review article is to discuss the potential of T-type voltage gated calcium channels (VGCCs) as drug targets in breast cancer. Breast cancer, attributable to the different molecular subtypes, has a crucial need for therapeutic strategies to counter the mortality rate. VGCCs play an important ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章,评审
doi:10.1007/s10549-018-4970-0
更新日期:2019-01-01 00:00:00
abstract:BACKGROUND:Gemcitabine (G) and vinorelbine (V) have favorable safety profile and antitumor activity in metastatic breast cancer. To exploit their different mechanism of action and lack of overlapping toxicity, we performed a phase I and II study of G and V in combination. PATIENTS AND METHODS:Fifty-three patients with...
journal_title:Breast cancer research and treatment
pub_type: 临床试验,杂志文章
doi:10.1023/a:1013034311284
更新日期:2001-12-01 00:00:00
abstract::Breast Cancer 2 gene (BRCA2) mutation carriers have a 45% chance of developing breast cancer and a 11% risk of developing ovarian cancer by the age of 70. While hundreds of BRCA2-truncating mutations have been associated with an increased cancer risk in carriers, the contribution of unclassified variants (UCVs) to can...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1607-y
更新日期:2011-10-01 00:00:00
abstract::NF-E2-related factor 2 (Nrf2) is an important transcription factor involved in antioxidant response. Nrf2 binds antioxidant response elements (ARE) within promoters of genes encoding detoxification enzymes (e.g., NAD (P) H-quinone oxidoreductase 1 (NQO1)) leading to their transcriptional activation. Nrf2 function is r...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-011-1604-1
更新日期:2011-10-01 00:00:00
abstract::The population-based Ontario Breast Screening Program (OBSP) provides two-yearly screening by both nurse examiner clinical breast examination (CBE) and two-view mammography to women aged 50 to 69. CBE alone accounts for about 5% of cancer detection. The purpose of this study was to determine whether CBE information af...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1023/a:1005990806919
更新日期:1998-03-01 00:00:00
abstract:PURPOSE:Breast cancer is the most common cancer among females worldwide. Axillary lymph node involvement is an important prognostic factor in pre-operative evaluation. The aim of this study was to evaluate the sensitivity and accuracy of AUS during the initial breast cancer diagnosis and the contribution of ultrasound ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-020-05830-z
更新日期:2020-10-01 00:00:00
abstract::Cell migration is essential in many diverse processes ranging from embryonic development to wound healing and immune response. Cancer cells have recently been shown to utilize chemoattraction mechanisms mediated by chemokines and their respective receptors, e.g., the CXCL12/CXCR4 pathway normally found in leukocytes. ...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-007-9504-0
更新日期:2007-12-01 00:00:00
abstract::The aim of this study was to verify the utility of second-look sonography using real-time virtual sonography (RVS)-a coordinated sonography with an MRI system that uses an image fusion technique with magnetic navigation-on the sonographic evaluation of MRI-detected lesions of the breast. Of the 196 consecutive patient...
journal_title:Breast cancer research and treatment
pub_type: 杂志文章
doi:10.1007/s10549-012-2163-9
更新日期:2012-08-01 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