The cytotoxic activity of ethanolic extracts of Thymus vulgaris, Thuja orientalis and Achillea millefolium was investigated on various growing tumor cell lines. MTT colorimetric assay was used for measuring the inhibition of cell proliferation. All of the three extracts showed a relatively dose-dependent inhibition of proliferation of human breast cancer (SK-Br-3, MDA-MB-435) and leukemia ...

In vitro studies on cancer cell lines still constitutes a major part of cancer research. It is very important that the researchers consider the importance of basic conditions of working with different cell lines. To the best of authors knowledge, this study is the first one to report the effect of seeding density on the growth curve of three human cancer cell lines. These cell lines include hum...

background gastric cancer is the second most common cause of cancer death worldwide. lentinan was shown to induce apoptosis in gastric cancer cells and could be used for the treatment of gastric cancer. objectives in this study, we analyzed anticancer effect of lentinan, a fungal β-glucan, on the gastric adenocarcinoma cell line (ags). materials and methods we used the dna ladder and tunnel app...

the cytotoxicity activity of the essential oils from the leaves of achillea wilhelmsii c. koch were studied on six tumor cell lines and a normal cell line w

Background: ß-carbolines, harmaline and harmine, are the major alkaloids presenting in the seeds of the Peganum harmala L. These alkaloids are known as herbal active principals with potential use in pharmaceutical and medicine. Objectives: To assess the growth inhibitory effect of phyto-alkaloids, harmaline and harmine, on cancer cell lines. Method...

Background Recent studies revealed that tumor-associated macrophages (TAMs) play a decisive role in the regulation of tumor progression by manipulating tumor oncogenesis, angiogenesis and immune functions within tumor microenvironments. Signal transducer and activator of transcription 3 (STAT3), which is a point of convergence for numerous oncogenic signalling pathways, is constitutively activ...

objective: silybin is a polyphenol with anti-oxidant and anti-cancer properties. the poor bioavailability of some polyphenols can be improved by binding to phosphatidylcholine. in recent years, studies have been conducted to evaluate the anti-cancer effect of silybin. we studied the effect of silybin and silybin-phosphatidylcholine on esr1 and esr2 gene expression and viability in the t47d brea...

Transforming growth factor betas are multifunctional polypeptides in the cytokine superfamily. They have a growth inhibitory role on hemopoietic progenitor cells in semisolid colony assay as well as in long-term bone-marrow culture. TGF - β2 represses stromal cells, stem cell factor gene transcription, and decreases the stability of c-kit transcripts in hemopoietic cells. TGF-β also modulat...