Project description:Withaferin A (WA), a major chemical component of an Indian herb Withania somnifera, induces cell death (apoptosis/necrosis) in a variety of tumor cells, but its molecular mechanism remains elusive. We report that WA induces cell death selectively in high-grade prostate (PC-3 and DU-145) and tongue (SAS) cancer cells but not in normal human fibroblast (TIG-1) and low-grade prostate cancer (LNCaP) cells.
Project description:RNA-Seq analysis using WA-treated 22Rv1 human prostate cancer cells revealed upregulation and downregulation of 6993 and 6607 genes, respectively when compared to the vehicle-treated control. The pathways with significantly upregulated gene expression following WA treatment included mitogen-activated protein kinases, focal adhesion, endocytosis, and autophagy as revealed by KEGG and gene ontology analyses. WA treatment also resulted in downregulation of genes associated with metabolic pathways, oxidative phosphorylation, tricarboxylic acid cycle, cell cycle, and base excision repair. This study identifies novel mechanistic targets of WA in prostate cancer.
Project description:Withaferin A (WA), a major chemical component of an Indian herb Withania somnifera, induces cell death (apoptosis/necrosis) in a variety of tumor cells, but its molecular mechanism remains elusive. We report that WA induces cell death selectively in high-grade prostate (PC-3 and DU-145) and tongue (SAS) cancer cells but not in normal human fibroblast (TIG-1) and low-grade prostate cancer (LNCaP) cells. To identify genes whose expression levels were up- or down-regulated in prostate cancer cells following WA treatment, we examined the transcriptome profiles of mRNA prepared from TIG-1, LNCaP, PC-3 and DU-145 cells using Agilent’s Whole Human Genome Microarray.
