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ribonucleic acid/tumori dojke

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BACKGROUND It is well known that HOX transcript antisense intergenic ribonucleic acid (HOTAIR) plays an important role in breast cancer (BC). However, whether circulating HOTAIR in plasma could be used for BC diagnosis and dynamic monitoring are unclear. METHODS We tested the expression levels of
To investigate the circulating levels of microRNA-34a (miRNA-34a) as a novel non-invasive biomarker of breast cancer (BC). Methods: The case-control study was conducted at the Department of Chemistry and Biochemistry, College of Medicine, Al-Nahrain University, Baghdad, Iraq, from December 2018 to
Fibulin-1 is an extracellular matrix protein overexpressed in epithelial ovarian and breast cancers. In estrogen receptor (ER)-positive ovarian and breast cancer cell lines, fibulin-1 mRNA levels are markedly increased by estrogens. Transfection experiments using fibulin-1 promoter constructs
Since sex steroid hormones and growth factors are known to modulate the proliferation of breast tumors, we have studied the effects of estrogen and progestin, their antagonists, and growth factors on the regulation of estrogen receptor (ER) mRNA and protein levels in T47D breast cancer cells, which
The recent demonstration that bone sialoprotein (BSP) can be detected in human breast cancer tissue by immunoperoxidase suggests that this phosphoprotein is ectopically expressed by malignant mammary epithelial cells. Its detection in human breast cancer cells raises questions about its potential
BACKGROUND Development of calcifying foci is a fairly common finding in human breast cancers, and the deposition of calcium phosphate is observed in such foci. The calcium phosphate is a physiologic component of bones and teeth. Since the expression of messenger (m) RNAs of osteopontin (OPN),
Transcriptional activities of nuclear receptors are modulated by coactivators and corepressors. The amplified in breast cancer-3 protein (AIB3, also known as ASC-2, RAP250, PRIP, TRBP, and NCR) is a newly identified nuclear receptor coactivator that is amplified and overexpressed in breast cancers.
Insulin-like growth factors (IGFs) play an important role in cellular proliferation, and IGF action appears to be involved in tumorigenesis. To determine the role of the IGF-I receptor in breast cancer cell growth, we stably transfected MCF-7 breast cancer cells with a construct encoding an
Both transforming growth factor beta (TGF beta) and TGF alpha mRNA are expressed in human breast cancer cell lines. We have investigated the relationship of mRNA abundance for these growth modulators to the proliferation rate of a number of human breast cancer cell lines. Furthermore, we have
OBJECTIVE The aim is to identify complex pathogenesis of breast cancer subtypes and disclose the whole landscape of altered transcriptional activities in these cancers. METHODS We downloaded raw expression data from public database, and performed transcriptome analysis of 8 estrogen

Estrogen regulates somatostatin receptor subtype 2 messenger ribonucleic acid expression in human breast cancer cells.

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Somatostatin (SRIF) and its analogs exhibit antiproliferative effects that are mediated by SRIF receptors (sst) present in responsive normal and neoplastic tissue including breast cancer. However, information regarding regulation of sst gene expression in cancer cells and modulation of SRIF binding
The expression of aromatase by breast cancer cells and the role of locally produced estrogen in the stimulation of tumor growth has been controversial. The present study was performed to determine the site of aromatization in human breast cancers, using both immunocytochemistry and in situ
Recent work has suggested that overexpression of the HER-2/neu protooncogene may play a role in the aggressive clinical behavior of some breast tumors. Since hormones are also known to change the proliferation rate and invasiveness of these cells, we have studied the effect of sex steroid hormones

Ligand-modulated regulation of progesterone receptor messenger ribonucleic acid and protein in human breast cancer cell lines.

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We have examined the effects of estrogen and progestin agonist and antagonist ligands on regulation of progesterone receptor (PR) protein and mRNA levels in a variety of human breast cancer cell lines. By Northern blot analysis, using human PR cDNA probes, PR mRNA in T47D and MCF-7 cells appears as
We have used AB-52, a monoclonal antibody which recognizes both the A (94,000 daltons) and B (120,000 daltons) proteins of human progesterone receptors (hPR), and hPR-50, a PR complementary DNA probe isolated from a T47D-pcD library, to study the structure and hormonal regulation of the hPR mRNAs
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