background: some of metal ions as environmental pollutants show estrogenic activity. this xenostrogenic compounds can be caused carcinogenicity in organs. the mechanism of carcinogenicity of metal ions is not clarified. objectives: in this study, we investigated the transcriptional effects of variety of metal ions on the bovine oxytocin and the thymidine kinase-ere promoter by estrogen receptor...

The transcription factor, SNAI1 (Snail), has recently been proposed as an important mediator of tumor invasion because of its role in E-cadherin down-regulation and induction of epithelial-mesenchymal transition. In human breast cancer, the expression of SNAI1 and/or the homologous SNAI2 (Slug) has been associated with E-cadherin repression, local or distant metastasis, tumor recurrence, or poo...

We have shown previously that withaferin A (WA), a promising anticancer constituent of Ayurvedic medicine plant Withania somnifera, inhibits growth of human breast cancer cells in culture and in vivo in association with apoptosis induction. The present study builds on these observations and demonstrates that WA inhibits constitutive as well as interleukin-6 (IL-6)-inducible activation of signal...

Histone deacetylase (HDAC) inhibitors (HDI) induce endoplasmic reticulum (ER) stress and apoptosis, while promoting autophagy, which promotes cancer cell survival when apoptosis is compromised. Here, we determined the in vitro and in vivo activity of the combination of the pan-HDI panobinostat and the autophagy inhibitor chloroquine against humanestrogen/progesterone receptor andHER2 (triple)-n...

Treatment of WEHI 231 immature B lymphoma cells with an antibody against their surface immunoglobulin M (anti-IgM) induces apoptosis and has been studied extensively as a model of self-induced B cell tolerance. Since the tumor suppressor protein p53 has been implicated in apoptosis in a large number of cell types and has been found to be mutated in a variety of B cell tumors, here we sought to ...

Since the dysregulation of ribosome biogenesis is closely associated with tumor progression, in the current study, the critical role of ribosome biogenesis related signaling was investigated in melatonin and/or puromycin induced apoptosis in MDA-MB-231 breast cancer cells. Despite its weak cytotoxicity, melatonin from 3 mM attenuated the expression of 45S pre-ribosomal RNA (pre-rRNA), UBF as a ...

Methods. Cells and reagents We purchased MDA-MB-231 cells from ATCC and primary IMR90, HDF and primary HUVEC cells from Lonza. MDA-MB-231, IMR-90, HDF and LLC cells were cultured in Eagle’s minimal Essential medium (MEM) from Lonza supplemented with 10% fetal bovine serum (FBS) and 1% GlutaMax (both from Invitrogen). Primary HUVEC cells were cultured in endothelial growth medium (EGM-2, Lonza)....

objective: the objective of this study was to investigate inhibition and anti-cancer effects of linoleic acid on the mcf-7 and mda-mb-231 human breast cancer cells. materials and methods: cell lines human breast cancer mcf-7 (gdc055) and mda-mb-231 (htb-26) cell lines were obtained from atcc. mcf-7 estrogen receptor positive human breast cancer cell line and  the estrogen receptor negative huma...

Xanthorrhizol is a natural sesquiterpenoid compound isolated from the rhizome of Curcuma xanthorrhizza Roxb (Zingerberaceae). Recent studies of xanthorrhizol in cell cultures strongly support the role of xanthorrhizol as an antiproliferative agent. In our study, we tested the antiproliferative effect of xanthorrhizol using different breast cancer cell lines. The invasive breast cancer cell line...

In the tumor microenvironment, monocytes respond to paracrine stimuli from breast cancer cells by secreting molecules that participate in breast cancer growth, invasion, intravasation and metastasis. Here we examined the effects of media conditioned by MDA-MB-231 human breast carcinoma cells (231-CM) on expression and secretion of proteases and secretion of cytokines by U937 human monocytes. We...