scholarly journals Comparison of the seleno-transcriptome expression between human non-cancerous mammary epithelial cells and two human breast cancer cell lines

2017 ◽  
Vol 13 (4) ◽  
pp. 2411-2417 ◽  
Author(s):  
Fabiola Rusolo ◽  
Francesca Capone ◽  
Raffaella Pasquale ◽  
Antonella Angiolillo ◽  
Giovanni Colonna ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Epithelial Cells ◽  
Breast Cancer Cell ◽  
Human Breast Cancer ◽  
Mammary Epithelial Cells ◽  
Human Breast Cancer Cell ◽  
Mammary Epithelial ◽  
Breast Cancer Cell Lines ◽  
Human Breast ◽  
Transcriptome Expression

scholarly journals Induction of 3β-Hydroxysteroid Dehydrogenase/Δ5-Δ4 Isomerase Type 1 Gene Transcription in Human Breast Cancer Cell Lines and in Normal Mammary Epithelial Cells by Interleukin-4 and Interleukin-13

1999 ◽  
Vol 13 (1) ◽  
pp. 66-81
Author(s):  
Sébastien Gingras ◽  
Richard Moriggl ◽  
Bernd Groner ◽  
Jacques Simard
Keyword(s):  
Breast Cancer ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Human Breast Cancer ◽  
Mammary Epithelial Cells ◽  
Human Breast Cancer Cell ◽  
Mammary Epithelial ◽  
Breast Cancer Cell Lines ◽  
Human Breast

Abstract Sex steroids play a crucial role in the development and differentiation of normal mammary gland as well as in the regulation of breast cancer growth. Local intracrine formation of sex steroids from inactive precursors secreted by the adrenals, namely, dehydroepiandrosterone and its sulfate, may regulate growth and function of peripheral target tissues, including the breast. Both endocrine and paracrine influences on the proliferation of human breast cancer cells are well recognized. Breast tumors harbor tumor-associated macrophages and tumor-infiltrating lymphocytes that secrete a wide spectrum of cytokines. These factors may also contribute to neoplastic cell activity. The present study was designed to investigate the action of cytokines on 3β-hydroxysteroid dehydrogenase (3β-HSD) activity, which is an essential step in the biosynthesis of active estrogens and androgens in human breast cancer cell lines and in normal human mammary epithelial cells in primary culture. 3β-HSD activity was undetectable in ZR-75–1 and T-47D estrogen receptor-positive (ER)+ cells under basal growth conditions. This activity was markedly induced after exposure to picomolar concentrations of interleukin (IL)-4 or IL-13. The potent stimulatory effect of these cytokines on 3β-HSD activity was also observed in the ER− MDA-MB-231 human breast cancer cell line and in normal human mammary epithelial cells (HMECs) in primary culture. The stimulation of 3β-HSD activity by IL-4 and IL-13 results from a rapid increase in 3β-HSD type 1 mRNA levels as measured by RT-PCR and Northern blot analyses. Such an induction of the 3β-HSD activity may modulate androgenic and estrogenic biological responses as demonstrated using ZR-75–1 cells transfected with androgen- or estrogen-sensitive reporter constructs and treated with the adrenal steroid 5-androstene-3β,17β-diol. The DNA-binding activity of Stat6, a member of the signal transducers and activators of transcription gene family, is activated 30 min after exposure to IL-4 and IL-13 in human breast cancer cell lines as well as in HMECs in primary culture. In these cells, Stat6 activated by IL-4 or IL-13 binds to two regions of the 3β-HSD type 1 gene promoter, containing Stat6 consensus sequences. IL-4 induction of 3β-HSD mRNA and activity is sensitive to staurosporine. This protein kinase inhibitor also inhibits IL-4-induced Stat6 DNA-binding activity. Our data demonstrate for the first time that IL-4 and IL-13 induce 3β-HSD type 1 gene expression, thus suggesting their involvement in the fine control of sex steroid biosynthesis from adrenal steroid precursors in normal and tumoral human mammary cells. Furthermore, aromatase and/or 5α-reductase(s) are expressed in the mammary gland and in a large proportion of human breast tumors. An increase in the formation of their substrates, namely, 4-androstenedione and testosterone, may well have a significant impact on the synthesis of active estrogens and androgens in these tissues.

scholarly journals The ETS Transcription Factor ESE-1 Transforms MCF-12A Human Mammary Epithelial Cells via a Novel Cytoplasmic Mechanism

2004 ◽  
Vol 24 (12) ◽  
pp. 5548-5564 ◽  
Author(s):  
Jason D. Prescott ◽  
Karen S. N. Koto ◽  
Meenakshi Singh ◽  
Arthur Gutierrez-Hartmann
Keyword(s):  
Breast Cancer ◽  
Transcription Factor ◽  
Epithelial Cells ◽  
Nuclear Localization ◽  
Human Breast Cancer ◽  
Mammary Epithelial Cells ◽  
Cell Transformation ◽  
Mammary Epithelial ◽  
Human Breast ◽  
Human Mammary Epithelial

ABSTRACT Several different transcription factors, including estrogen receptor, progesterone receptor, and ETS family members, have been implicated in human breast cancer, indicating that transcription factor-induced alterations in gene expression underlie mammary cell transformation. ESE-1 is an epithelium-specific ETS transcription factor that contains two distinguishing domains, a serine- and aspartic acid-rich (SAR) domain and an AT hook domain. ESE-1 is abundantly expressed in human breast cancer and trans-activates epithelium-specific gene promoters in transient transfection assays. While it has been presumed that ETS factors transform mammary epithelial cells via their nuclear transcriptional functions, here we show (i) that ESE-1 protein is cytoplasmic in human breast cancer cells; (ii) that stably expressed green fluorescent protein-ESE-1 transforms MCF-12A human mammary epithelial cells; and (iii) that the ESE-1 SAR domain, acting in the cytoplasm, is necessary and sufficient to mediate this transformation. Deletion of transcriptional regulatory or nuclear localization domains does not impair ESE-1-mediated transformation, whereas fusing the simian virus 40 T-antigen nuclear localization signal to various ESE-1 constructs, including the SAR domain alone, inhibits their transforming capacity. Finally, we show that the nuclear localization of ESE-1 protein induces apoptosis in nontransformed mammary epithelial cells via a transcription-dependent mechanism. Together, our studies reveal two distinct ESE-1 functions, apoptosis and transformation, where the ESE-1 transcription activation domain contributes to apoptosis and the SAR domain mediates transformation via a novel nonnuclear, nontranscriptional mechanism. These studies not only describe a unique ETS factor transformation mechanism but also establish a new paradigm for cell transformation in general.

scholarly journals Aberrant Expression of Novel and Previously Described Cell Membrane Markers in Human Breast Cancer Cell Lines and Tumors

2005 ◽  
Vol 11 (12) ◽  
pp. 4357-4364 ◽  
Author(s):  
Huayi Huang ◽  
Jeff Groth ◽  
Khalid Sossey-Alaoui ◽  
Lesleyann Hawthorn ◽  
Stephanie Beall ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Membrane ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Human Breast Cancer ◽  
Human Breast Cancer Cell ◽  
Breast Cancer Cell Lines ◽  
Human Breast ◽  
Aberrant Expression

Human breast cancer cell lines express the PTH/PTHrP receptor

Bone ◽  
1995 ◽  
Vol 16 (6) ◽  
pp. 689
Author(s):  
M.A. Birch ◽  
J.A. Carron ◽  
W.D. Fraser ◽  
J.A. Gallagher
Keyword(s):  
Breast Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Human Breast Cancer ◽  
Cancer Cell Lines ◽  
Human Breast Cancer Cell ◽  
Breast Cancer Cell Lines ◽  
Human Breast ◽  
Pthrp Receptor
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