Indirect evidence suggests that estrogen is involved in the etiology of breast cancer. Estrogen is also thought to modulate nitric oxide (NO) in human breast tumor tissue via regulation of inducible nitric oxide synthase (iNOS). Objectives of this study were to determine whether estradiol (E2) affects iNOS expression level in breast cancer cells and to study the effect of various concentrations...

Interleukin (IL)-6, a multifunctional regulator of immune response, hematopoiesis, and acute phase reactions, has also been shown to regulate cancer cell proliferation. We have investigated IL-6 signaling pathways and cellular responses in the T47D breast carcinoma cell line. The IL-6-type cytokines, IL-6 and oncostatin M, simultaneously inhibited cell proliferation and increased cell migration...

Glycyrrhiza is a genus of about 20 accepted species in the legume family (Fabaceae), with a distribution in Asia, Australia, Europe, and the Americas. Recently, about 30 species from the genus Glycyrrhiza have been found and used in traditional medicine for treating cancer. Different studies confirmed that down regulation of Non-metastatic protein (NM23), a metastasis suppressor gene is related...

Cryptocarya pulchrinervia is an Indonesian indigenous plant that grows in Sumatra, Kalimantan and Papua. One of the new compounds extracted from this was cryptobrachytone C, which known to be cytotoxic against cancer cells Murine leukemia P388 with IC50 10.52 ?M. In study, cytotoxicity anticancer properties C on proliferation, apoptosis, migration clone formation MCF-7 T47D breast cell lines we...

Vascular endothelial growth factor (VEGF) is a potent stimulator of angiogenesis and a prognostic factor for many tumors, including those of endocrine-responsive tissues such as the breast and uterus. In this study, we found that overexpression of PEA3 could increase VEGF mRNA levels and VEGF promoter activity in human T47D and SKBR3 breast cancer cells. Chromatin immunoprecipitation assay demo...

We have used a new monoclonal antibody, designated C-262, directed against the last 14 amino acids of the carboxy-terminus of human progesterone receptors (N.L. Weigel et al., Mol. Endocrinol., 6: 1585-1597, 1992) to analyze progesterone receptor structure. This new antibody recognizes the previously described B-receptors (M(r) 120,000) and the naturally occurring N-terminal truncated A-recepto...

PURPOSE The human TESTIN (TES) gene is a putative tumor suppressor gene in the fragile chromosomal region FRA7G at 7q31.1/2 that was reported to be altered in leukemia and lymphoma cell lines. In this report, we investigated the effect of TES gene expression in vivo to evaluate a possible role of TES gene in human cancer. EXPERIMENTAL DESIGN We have analyzed the expression of TES gene in a pa...

A monoclonal antibody (7B10) which displays differential reactivity with breast carcinomas compared to benign lesions or normal breast tissue was selected by fusion of spleen cells from BALB/c mice immunized with the T47D human mammary carcinoma cell line. The antigen, rec ognized by 7B10 on T47D cells, appeared to be both surface and cyto plasm localized, as demonstrated by indirect immunofluo...

C35 is a novel tumor biomarker associated with metastasis progression. To investigate the interaction factors of C35 in its high expressed breast cancer cell lines, we constructed bait recombinant plasmids of C35 gene and T47D cell cDNA library for yeast two-hybrid screening. Full length C35 sequences were subcloned using RT-PCR from cDNA template extracted from T47D cells. Based on functional ...

The coordinated activity of estrogens and epidermal growth factor receptor (EGFR) family agonists represents the main determinant of breast cancer cell proliferation. Stromal cell-derived factor-1 (SDF-1) enhances extracellular signal-regulated kinases 1 and 2 (ERK1/2) activity via the transactivation of EGFR and 17beta-estradiol (E2) induces SDF-1 production to exert autocrine proliferative ef...