signaling pathway and CDK8 in HCT signaling pathway and CDK8 in HCT signaling pathway and CDK8 in HCT 116 and

Colorectal cancer is one of the leading causes of death worldwide. Wnt/ (cid:451) - catenin signalling pathway plays a central role in normal cellular responses, making it a potent target in cancer therapy. Study was taken to assess whether ellagic acid modulates Wnt/ (cid:451) - catenin pathway and CDK8 activity in colon cancer cells (HT 29 and HCT 116). Ellagic acid caused significant decrease in viability of cancer cells and markedly down-regulated the expression of CDK 8, (cid:451) - catenin, survivin, c-Myc and cyclin D1. siCDK8 transfection resulted in marked reduction in the expression of survivin, c-Myc and cyclin D1 as well. Considerable up-regulation in the expression of p-(cid:451) - catenin, axin1 and 2 following ellagic acid exposure were observed. Ellagic acid was able to effectively reduce cell viability and modulate expressions of Wnt/ (cid:451) - catenin signalling cascade proteins and down regulate the activity and expression of CDK8 in HT 29 and HCT 116 cells.

[1]  C. Ulrich,et al.  Differences in DNA methylation signatures reveal multiple pathways of progression from adenoma to colorectal cancer. , 2014, Gastroenterology.

[2]  Aung Ko Win,et al.  Does risk of endometrial cancer for women without a germline mutation in a DNA mismatch repair gene depend on family history of endometrial cancer or colorectal cancer? , 2014, Gynecologic oncology.

[3]  Dong-Eun Kim,et al.  Ursolic acid and its natural derivative corosolic acid suppress the proliferation of APC-mutated colon cancer cells through promotion of β-catenin degradation. , 2014, Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association.

[4]  S. Steele,et al.  Future Directions for the Early Detection of Colorectal Cancer Recurrence , 2014, Journal of Cancer.

[5]  J. Gu,et al.  MiR-27a Targets sFRP1 in hFOB Cells to Regulate Proliferation, Apoptosis and Differentiation , 2014, PloS one.

[6]  Chang-Young Jang,et al.  Tussilagone suppresses colon cancer cell proliferation by promoting the degradation of β-catenin. , 2014, Biochemical and biophysical research communications.

[7]  J. Svaren,et al.  Epigenetic susceptibility factors for prostate cancer with aging , 2013, The Prostate.

[8]  Bangmao Wang,et al.  Berberine potently attenuates intestinal polyps growth in ApcMin mice and familial adenomatous polyposis patients through inhibition of Wnt signalling , 2013, Journal of cellular and molecular medicine.

[9]  M. Demma,et al.  CDK8 regulates E2F1 transcriptional activity through S375 phosphorylation , 2013, Oncogene.

[10]  Bruce J. Melancon,et al.  Small-molecule inhibition of Wnt signaling through activation of casein kinase 1α. , 2010, Nature chemical biology.

[11]  R. Abia,et al.  The flavonol isorhamnetin exhibits cytotoxic effects on human colon cancer cells. , 2010, Journal of agricultural and food chemistry.

[12]  Jian-ming Li,et al.  Stathmin, a new target of PRL-3 identified by proteomic methods, plays a key role in progression and metastasis of colorectal cancer. , 2010, Journal of proteome research.

[13]  R. Agarwal,et al.  Antimetastatic efficacy of silibinin: molecular mechanisms and therapeutic potential against cancer , 2010, Cancer and Metastasis Reviews.

[14]  A. J. Donner,et al.  CDK8: a positive regulator of transcription. , 2010, Transcription.

[15]  Changsun Choi,et al.  Apoptotic effect of quercetin on HT-29 colon cancer cells via the AMPK signaling pathway. , 2010, Journal of agricultural and food chemistry.

[16]  Chi-Tang Ho,et al.  3,5,3',4',5'-pentamethoxystilbene (MR-5), a synthetically methoxylated analogue of resveratrol, inhibits growth and induces G1 cell cycle arrest of human breast carcinoma MCF-7 cells. , 2010, Journal of agricultural and food chemistry.

[17]  Zhiwei Wang,et al.  Cellular signaling perturbation by natural products. , 2009, Cellular signalling.

[18]  Xu-Feng Huang,et al.  The signal pathways in azoxymethane-induced colon cancer and preventive implications , 2009, Cancer biology & therapy.

[19]  J. Espada,et al.  Wnt signalling and cancer stem cells , 2009, Clinical & translational oncology : official publication of the Federation of Spanish Oncology Societies and of the National Cancer Institute of Mexico.

[20]  Pablo Tamayo,et al.  CDK8 is a colorectal cancer oncogene that regulates β-catenin activity , 2008, Nature.

[21]  Jun-Yuan Ji,et al.  E2F1 represses β-catenin transcription and is antagonized by both pRB and CDK8 , 2008, Nature.

[22]  W. Birchmeier,et al.  Wnt signalling and its impact on development and cancer , 2008, Nature Reviews Cancer.

[23]  A. J. Donner,et al.  CDK8 is a stimulus-specific positive coregulator of p53 target genes. , 2007, Molecular cell.

[24]  J. Espín,et al.  The dietary hydrolysable tannin punicalagin releases ellagic acid that induces apoptosis in human colon adenocarcinoma Caco-2 cells by using the mitochondrial pathway. , 2006, The Journal of nutritional biochemistry.

[25]  A. Watson An overview of apoptosis and the prevention of colorectal cancer. , 2006, Critical reviews in oncology/hematology.

[26]  Joan W Conaway,et al.  The mammalian Mediator complex and its role in transcriptional regulation. , 2005, Trends in biochemical sciences.

[27]  H. Clevers,et al.  Wnt signalling in stem cells and cancer , 2005, Nature.

[28]  N. Coleman,et al.  Colorectal cancer screening: prospects for molecular stool analysis , 2005, Nature Reviews Cancer.

[29]  K. Jones,et al.  Mastermind recruits CycC:CDK8 to phosphorylate the Notch ICD and coordinate activation with turnover. , 2004, Molecular cell.

[30]  M. Lean,et al.  Analysis of ellagitannins and conjugates of ellagic acid and quercetin in raspberry fruits by LC-MSn. , 2003, Phytochemistry.

[31]  S. Hecht,et al.  DNA damaging activity of ellagic acid derivatives. , 2003, Bioorganic & medicinal chemistry.

[32]  Joon-Hee Lee,et al.  Ellagic acid and flavonoid antioxidant content of muscadine wine and juice. , 2002, Journal of agricultural and food chemistry.

[33]  G. Stoner,et al.  Etiology and chemoprevention of esophageal squamous cell carcinoma. , 2001, Carcinogenesis.

[34]  R. Kuttan,et al.  Inhibition of liver fibrosis by ellagic acid. , 1996, Indian journal of physiology and pharmacology.

[35]  M. Fukayama,et al.  Characteristics of somatic mutation of the adenomatous polyposis coli gene in colorectal tumors. , 1994, Cancer research.

[36]  V. Notario,et al.  Quercetin mediates the down-regulation of mutant p53 in the human breast cancer cell line MDA-MB468. , 1994, Cancer research.

[37]  P. Tamayo,et al.  CDK 8 is a colorectal cancer oncogene that regulates b-catenin activity , 2008 .

[38]  H. Clevers Wnt/beta-catenin signaling in development and disease. , 2006, Cell.

[39]  Seokjoong Kim,et al.  Mediator is a transducer of Wnt/beta-catenin signaling. , 2006, The Journal of biological chemistry.

[40]  T. Shirao,et al.  The study of , 1963 .