Abstract:
:The aim of this study was to explore the pharmacological response to 4-hydroxy-tamoxifen (OH-Tam) and to estradiol (E2) in three cell lines: MVLN, a human breast carcinoma cell line derived from MCF-7, and two MVLN-derived OH-Tam-resistant (OTR) cell lines, called CL6.8 and CL6.32. The OH-Tam response in the OTR cells was associated with the development of both an agonist activity of the drug on cell proliferation and the resistance of the cells to OH-Tam-induced apoptosis. The OTR cells also developed an increased sensitivity to the E2 growth-stimulating activity. To delineate the genes that determine such responses, we combined a mini-array-based gene-selection approach and an extensive real-time quantitative PCR exploration in the MVLN and OTR cell lines exposed to three pharmacological conditions: a 4-day treatment with E2, OH-Tam or both E2 and OH-Tam. Compiled data revealed a hyper-response to E2 and a modification of the OH-Tam pharmacological response (loss of antagonist action and agonist activity) at the gene-expression level. The proteins encoded by the genes selected in this study have been reported to be involved in the regulation of cell proliferation, cell transformation, DNA repair and apoptosis, or belong to the ErbB/epidermal growth factor receptor-driven pathway. Our data also provide evidence of changes in transcriptional co-regulator expression, elevated mitogen-activated protein kinase activity and increase in the phosphorylation status of estrogen receptor alpha on serine residue 118 in the OTR cell lines, suggesting the possible involvement of such mechanisms in the agonist activity of OH-Tam and/or the hyper-response of cells to E2. Taken together, our study should enhance our knowledge of the multifactorial events associated with the development of Tam resistance in two independent cell lines issued from the same selection process and should help in the identification of potential molecular targets for diagnosis or therapy.
journal_name
Endocr Relat Cancerjournal_title
Endocrine-related cancerauthors
Vendrell JA,Bieche I,Desmetz C,Badia E,Tozlu S,Nguyen C,Nicolas JC,Lidereau R,Cohen PAdoi
10.1677/erc.1.00899subject
Has Abstractpub_date
2005-03-01 00:00:00pages
75-92issue
1eissn
1351-0088issn
1479-6821pii
12/1/75journal_volume
12pub_type
杂志文章abstract::Colony-stimulating factor 1 (CSF1) is a key regulator of mammary gland development, and a modulator of tissue macrophages. Expression of the CSF1 receptor gene C-FMS (CSF1R) is strongly associated with poor outcome in breast cancer and results in tumor cell invasiveness and pro-metastatic behavior in vitro. However, C...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-13-0198
更新日期:2013-10-14 00:00:00
abstract::Evidence supports a role of 17&-estradiol (E2) in carcinogenesis and the large majority of breast carcinomas are dependent on estrogen. The anti-estrogen tamoxifen (TAM) is widely used for both treatment and prevention of breast cancer; however, it is also carcinogenic in human uterus and rat liver, highlighting the p...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-16-0078
更新日期:2016-08-01 00:00:00
abstract::This review focuses on the tumour types and symptoms associated with non-islet cell tumour-induced hypoglycaemia (NICTH) as well as the pathogenesis, diagnosis and treatment of this rare paraneoplastic phenomenon. In addition, we report two illustrative cases of patients suffering from NICTH caused by a solid fibrous ...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1677/ERC-07-0161
更新日期:2007-12-01 00:00:00
abstract::Platinum-based therapy remains the cornerstone for cancer therapy; however, its efficacy varies. The role of lipoprotein receptor-mediated lipid entry for cancer development has been reported. Yet, the roles and mechanism of the low-density lipoprotein receptor (LDLR) in chemo-sensitivities are unknown. In the current...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-19-0095
更新日期:2020-02-01 00:00:00
abstract::The function of estrogen receptor beta (ER-beta) in mammary tissue is not completely understood. While early observations were often conflicting, more recent data suggest an important role as a tumor-suppressor gene. A decrease of ER-beta expression has been observed in ductal carcinoma in situ and invasive carcinoma ...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1677/erc.1.01088
更新日期:2005-12-01 00:00:00
abstract::The study aims to examine whether the annual variations in fasting plasma glucose (FPG) measurements, represented by the coefficient of variation (CV), predict cancer incidence and mortality in the subsequent years independent of traditional risk factors of type 2 diabetic patients. A computerized database of patients...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-12-0038
更新日期:2012-07-18 00:00:00
abstract::Epidemiologic and experimental evidence suggest that a subset of breast cancer is insulin responsive, but it is unclear whether safe and effective therapies that target the insulin receptor (IR), which is homologous to oncogenes of the tyrosine kinase class, can be developed. We demonstrate that both pharmacologic inh...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-11-0136
更新日期:2011-11-14 00:00:00
abstract::Obesity is becoming a global epidemic and is a risk factor for breast cancer. Environmental enrichment (EE), a model recapitulating an active lifestyle, leads to leanness, resistance to diet-induced obesity (DIO) and cancer. One mechanism is the activation of the hypothalamic-sympathoneural-adipocyte (HSA) axis. This ...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-19-0075
更新日期:2019-05-01 00:00:00
abstract::Forty years ago, physicians caring for the J-kindred, a 100+ member family with multiple endocrine neoplasia type 2A (MEN2A), hypothesized that early thyroidectomy based on measurement of the biomarker calcitonin could cure patients at risk for development of medullary thyroid carcinoma (MTC). We re-evaluated 22 famil...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-20-0108
更新日期:2020-08-01 00:00:00
abstract::It is now recognized that transforming growth factor beta (TGF-beta) is an important factor that regulates normal breast development as well as breast cancer. Genetically engineered mouse models have been used to determine the role and mechanism of TGF-beta action in normal development and diseases of the breast. Usin...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1677/erc.1.00936
更新日期:2005-12-01 00:00:00
abstract::Apoptosis is a frequent phenomenon in breast cancer and it can be detected by light microscopy in conventional histopathological sections or by special staining techniques. The number of apoptotic cells as a percentage of cells present, or the number of apoptotic cells per square millimetre of neoplastic tissue, is us...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1677/erc.0.0060013
更新日期:1999-03-01 00:00:00
abstract::Certain members of the thiazolidinedione (TZD) family of the peroxisome proliferator-activated receptor gamma (PPARgamma) agonists, such as troglitazone and ciglitazone, exhibit antitumor activities; however, the underlying mechanism remains inconclusive. Substantial evidence suggests that the antiproliferative effect...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1677/erc.1.01182
更新日期:2006-06-01 00:00:00
abstract::Quantitative reverse transcription-polymerase chain reaction (RT-PCR) used to detect minor changes in specific mRNA concentrations may be associated with poor reproducibility. Stringent quality control is therefore essential at each step of the protocol, including the PCR procedure. We performed inter-laboratory quali...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1677/erc.1.00808
更新日期:2004-09-01 00:00:00
abstract::We undertook this study to estimate an accurate incidence and spread patterns of occult papillary thyroid carcinoma (PTC) in patients with a preoperative diagnosis of solitary PTC by using whole-specimen mapping of all specimens after a total thyroidectomy. Enrolled prospectively in this whole-thyroid mapping study ar...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-15-0152
更新日期:2015-08-01 00:00:00
abstract::Breast and prostate cancer are the most well-characterized cancers of the type that have their development and growth controlled by the endocrine system. These cancers are the leading causes of cancer death in women and men, respectively, in the United States. Being hormone-dependent tumors, antihormone therapies usua...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1677/erc.1.01026
更新日期:2005-09-01 00:00:00
abstract::The protein MENIN is the product of the multiple endocrine neoplasia type I (MEN1) gene. Altered MENIN expression is one of the few events that are clearly associated with foregut neuroendocrine tumours (NETs), classical oncogenes or tumour suppressors being not involved. One of the current challenges is to understand...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-13-0164
更新日期:2013-10-24 00:00:00
abstract::Resistance to anoikis (matrix deprivation-induced apoptosis) is a critical component of the metastatic cascade. Molecular mechanisms underlying resistance to anoikis have not been reported in thyroid cancer cells. For an in vitro model of anoikis, we cultured follicular, papillary, and anaplastic thyroid cancer cell l...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-10-0289
更新日期:2011-09-20 00:00:00
abstract::Obesity is a high risk factor for breast cancer. This relationship could be marked by a specific methylome. The current work was aimed to explore the impact of obesity and menopausal status on variation in breast cancer methylomes. Data from Infinium 450K array-based methylomes of 64 breast tumors were coupled with in...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-16-0565
更新日期:2017-07-01 00:00:00
abstract::The HIV protease inhibitor Nelfinavir (NFV) inhibits PI3K/AKT and MAPK/ERK signaling pathways, emerging targets in thyroid cancers. We examined the effects of NFV on cancer cells that derived from follicular (FTC), papillary (PTC) and anaplastic (ATC) thyroid cancers. NFV (1-20 µM) was tested in FTC133, BCPAP and SW17...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-16-0568
更新日期:2017-03-01 00:00:00
abstract::With few exceptions, the almost 30,000 prostate cancer deaths annually in the United States are due to failure of androgen deprivation therapy. Androgen deprivation therapy prevents ligand-activation of the androgen receptor. Despite initial remission after androgen deprivation therapy, prostate cancer almost invariab...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1530/ERC-17-0121
更新日期:2017-08-01 00:00:00
abstract::Cancer cells often display chromosomal instability (CIN), a defect that involves loss or rearrangement of the cell's genetic material - chromosomes - during cell division. This process results in the generation of aneuploidy, a deviation from the haploid number of chromosomes, and structural alterations of chromosomes...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1530/ERC-17-0187
更新日期:2017-09-01 00:00:00
abstract::Thyroid cancer is on the rise. Novel approaches are needed to improve the outcome of patients with recurrent and advanced metastatic thyroid cancers. FDA approval of suberoylanilide hydroxamic acid (SAHA; vorinostat), an inhibitor of histone deacetylase, for the treatment of hematological malignancies led to the clini...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-16-0103
更新日期:2016-07-01 00:00:00
abstract::Elevated circulating chromogranin A (CgA) levels are found in neuroendocrine tumors (NETs), but the diagnostic usefulness of this marker is still debatable. To assess the role of CgA for the diagnosis of gastroenteropancreatic (GEP) NETs and the identification of metastatic patients, an Italian multicenter observation...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,多中心研究
doi:10.1677/ERC-07-0001
更新日期:2007-06-01 00:00:00
abstract::This review describes human and rodent-derived cell lines and xenografts developed over the last five decades that are suitable or potentially suitable models for paraganglioma-pheochromocytoma research. We outline the strengths and weaknesses of various models and emphasize the recurring theme that, despite the major...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1530/ERC-19-0434
更新日期:2020-12-01 00:00:00
abstract::Aromatase inhibitors (AIs) are one of the principal therapeutic approaches for estrogen receptor-positive (ER+) breast cancer in postmenopausal women. They block estrogen biosynthesis through aromatase inhibition, thus preventing tumour progression. Besides the therapeutic success of the third-generation AIs, acquired...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1530/ERC-17-0425
更新日期:2018-05-01 00:00:00
abstract::Endometrial cancer risk is strongly influenced by obesity, but the mechanisms of action remain unclear. Leptin and adiponectin, secreted from adipose tissue, reportedly play a role in such carcinogenic processes as cell proliferation, angiogenesis, and insulin regulation. In this case-control study, nested within the ...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,随机对照试验
doi:10.1530/ERC-12-0229
更新日期:2013-02-18 00:00:00
abstract::Vandetanib is an oral tyrosine kinase inhibitor approved for treatment of advanced symptomatic or progressive medullary thyroid cancer (MTC). The current study (Nbib1496313) evaluated the benefit-risk of two starting doses of vandetanib in patients with symptomatic or progressive MTC. Patients were randomized 1:1 to r...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,随机对照试验
doi:10.1530/ERC-18-0258
更新日期:2019-02-01 00:00:00
abstract::Androgen deprivation therapy (ADT) is a highly effective treatment used in ∼30% of men with prostate cancer. Adverse effects of ADT on muscle are significant with consistent losses in muscle mass. However, effects of ADT on muscle strength and physical function, of most relevance to the patient, are less well understo...
journal_title:Endocrine-related cancer
pub_type: 杂志文章,评审
doi:10.1530/ERC-15-0232
更新日期:2016-01-01 00:00:00
abstract::The imprinted gene, neuronatin (NNAT), is one of the most abundant transcripts in the pituitary and is thought to be involved in the development and maturation of this gland. In a recent whole-genome approach, exploiting a pituitary tumour cell line, we identified hypermethylation associated loss of NNAT. In this repo...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1677/ERC-09-0008
更新日期:2009-06-01 00:00:00
abstract::Although targeted therapy, including inhibitors of mammalian target of rapamycin (mTOR) and vascular endothelial growth factor, being developed for carcinoids arised from the gastrointestinal tract, treatment for locally advanced or metastatic bronchial carcinoids (BCs) remains lacking. Traditional cytotoxic chemother...
journal_title:Endocrine-related cancer
pub_type: 杂志文章
doi:10.1530/ERC-10-0290
更新日期:2011-04-28 00:00:00