scholarly journals The quantum language of the microRNA gene and anti-cancer: with a dynamic computer simulation of human breast cancer drug resistance

2018 ◽  
Vol 5 (5) ◽  
Author(s):  
Yoichi Robertus Fujii
Author(s):  
Fatma Ismail Alhmied ◽  
Ali Hassan Alammar ◽  
Bayan Mohammed Alsultan ◽  
Marooj Alshehri ◽  
Faheem Hyder Pottoo

Abstract:: Thymoquinone (TQ), the bioactive constituent of Nigella Sativa seeds is a well-known natural compound for the management of several types of cancers. The anti-cancer properties of thymoquinone are thought to be operated via intervening with various oncogenic pathways including cell cycle arrest, prevention of inflammation and oxidative stress, induction of invasion, metastasis, inhibition of angiogenesis, and apoptosis. As well as up-regulation and down-regulation of specific tumor suppressor genes and tumor promoting genes, respectively. Proliferation of various tumor cells is inhibited by TQ via induction of cell cycle arrest, disruption of the microtubule organization, and down regulating cell survival protein expression. TQ induces G1 phase cell cycle arrest in human breast cancer, colon cancer and osteosarcoma cells through inhibiting the activation of cyclin E or cyclin D and up-regulating p27and p21 a cyclin dependent kinase (Cdk) inhibitor. TQ concentration is a significant factor in targeting a particular cell cycle phase. While high concentration of TQ induced G2 phase arrest in human breast cancer (MCF-7) cells, low concentration causes S phase arrest. This review article provides mechanistic insights into the anti-cancer properties of thymoquinone.


2016 ◽  
Vol 2 (4) ◽  
pp. 94 ◽  
Author(s):  
Sarojini S. ◽  
Senthilkumaar P. ◽  
Ramesh V.

The ethanol extract of Mikania glomerata has anti-proliferative effect on the human breast cancer cell lines. The object of the present work is to investigate the anti-cancer effect of Mikania glomerata ethanolic extract on breast cancer. Soxlet fractions using crude ethanolic extract of Mikania glomerata was prepared by standard extraction protocols. To check the antiproliferative effect of this extract, the extract chosen was tested for cell viability on the breast cancer cells MCF 7 in different concentrations. Cell viability was evaluated by MTT assay for 24 hour and 48 hours. The LD50 value was calculated and different morphometric assays were performed with the effective dose of the extract. The effect of the extract on the normal cell was evaluated as well. Cell proliferation, cell cycle, Clonogenic survival, Apoptosis and MTT assays were performed. The ethanolic extract showed a dose-dependent and time dependent inhibition on cell proliferation in the breast cancer cell lines. It showed low cytotoxicity in the normal cells and inhibited cellular adhesion and wound healing in treated cancer cells. The present study suggests that the leaf extract from Mikania glomerata induces anticancer effect on the breast cancer cells. Further study might help to confirm it as an anti-cancer drug.


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