نتایج جستجو برای: t47d
تعداد نتایج: 1129 فیلتر نتایج به سال:
Plants are an invaluable source of potential new anti-cancer drugs. Here, we investigated the cytotoxic activity of the acetonic extract of Buxus sempervirens on five breast cancer cell lines, MCF7, MCF10CA1a and T47D, three aggressive triple positive breast cancer cell lines, and BT-20 and MDA-MB-435, which are triple negative breast cancer cell lines. As a control, MCF10A, a spontaneously imm...
The use of combined hormone replacement therapy (HRT) with oestrogens and progestins in postmenopausal women has been associated with an increased risk for developing breast cancer. The reasons are not fully understood, but influence of HRT on endogenous conversion of female sex hormones may be involved. The expression of 17β hydroxysteroid dehydrogenases (17βHSD), which are enzymes catalysing ...
A differential role for CXCR4 in the regulation of normal versus malignant breast stem cell activity
C-X-C chemokine receptor type 4 (CXCR4) is known to regulate lung, pancreatic and prostate cancer stem cells. In breast cancer, CXCR4 signalling has been reported to be a mediator of metastasis, and is linked to poor prognosis. However its role in normal and malignant breast stem cell function has not been investigated. Anoikis resistant (AR) cells were collected from immortalised (MCF10A, 226L...
Background & Aims: Breast cancer is the most common cancer in women. Nearly 50% of breast cancers are dependent to sex hormones, and the effects of these hormones are mediated by their binding to specific receptors. Also p53 protein is mutated in about half of cancers including breast cancer and high level of p53 protein is a common feature of many human malignant cancers. Given that T47D cell...
Objective(s):Berberine, a naturally occurring isoquinoline alkaloid, has shown antitumor properties in some in vitro systems. But the effect of berberine on breast cancer has not yet been completely studied. In this study, we evaluated anticancer properties of berberine in comparison to doxorubicin. Materials and Methods: The antiproliferative effects of berberine and doxorubicin alone and in ...
Objective(s):MicroRNAs (miRNAs) are a class of short RNAs that control the biological processes including cell proliferation, apoptosis and development. Aberrant expression of miRNAs was determined in the different stages of tumor development and metastasis. To study the effect of silibinin on miRNAs expression, we evaluated quantitative expression of miR-21 and miR-155 as two oncomiRs and seve...
The role of antioxidants in prevention and treatment of cancers have been reported by several studies. In our investigation we studied the effects of ascorbic acid, ?-tocopherol, and sodium selenite on proliferation of two breast cancer cell lines: T47D (estrogen-receptor positive) and MDA-MB-231 (estrogen-receptor negative). We also used 17-?-estradiol as positive control for proliferation of ...
سابقه و هدف: سرطان پستان به عنوان دومین علت مرگ در زنان شناخته میشود. امروزه، نانوذرات به عنوان یک فاکتور ضد سرطانی در تحقیقات حوزه درمان سرطان مورد توجه قرار گرفته است. بنابراین، هدف از انجام این تحقیق بررسی اثرات سمیت نانوذرات فلزی اکسید روی (ZnONPs) و ارزیابی بیان ژن NM23 روی رده سلولی سرطان پستان T47D می باشد. مواد و روش ها: در این مطالعه تجربی ردههای سلولی سرطان پستان ( T47D) و نرمال...
BACKGROUND It has been demonstrated that certain NK-1 antagonists could reduce proliferation of several cancer cell lines, however, it is unknown whether SR140333 exerts proliferation inhibition in breast cancer cell line. METHODS Immunohistochemical staining was carried out to investigate the immunolocation of NK-1 in breast cancer tissues and T47D cell line, thereafter, various concentratio...
Bortezomib is a proteasome inhibitor with remarkable clinical antitumor activity in multiple myeloma (MM) and is under evaluation in clinical trials in various types of cancer including breast cancer. Although the initial rationale for its use in cancer treatment was the inhibition of NF-κB activity by blocking proteasomal degradation of IκBα, direct evidence indicating inhibition of constituti...
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