9-Hydroxystearic acid upregulates p21(WAF1) in HT29 cancer cells.

Abstract

Growing evidence supports the critical role of lipid peroxidation products in the control of cell proliferation. In previous studies we demonstrated the efficient restriction of the proliferation rate in several cell lines resulting from the in vitro treatment with endogenous lipid polar components of cell membranes. Among these, 9-hydroxystearic acid (9-HSA), a primary intermediate of lipid peroxidation, induced a significant arrest in G0/G1 in HT29 colon cancer cells. In response to 9-HSA treatment of HT29 we observed cell growth arrest and increase in p21(WAF1) expression both at the transcriptional and the translational levels. Growth of p21(WAF1)-deleted HCT116 human colon carcinoma cells was not inhibited by 9-HSA. We present evidence that p21(WAF1) is required for 9-HSA mediated growth arrest in human colon carcinoma cells.

• Authors: N Calonghi, C Cappadone, E Pagnotta, G Farruggia, F Buontempo, C Boga, G L Brusa, M A Santucci, L Masotti
• Journal: Biochemical and biophysical research communications (Biochem Biophys Res Commun) Vol. 314 Issue 1 Pg. 138-42 (Jan 30 2004) ISSN: 0006-291X [Print] United States
• PMID: 14715257 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Antineoplastic Agents
• CDKN1A protein, human
• Cyclin-Dependent Kinase Inhibitor p21
• Cyclins
• Stearic Acids
• 9-hydroxystearic acid

Topics

• Antineoplastic Agents (metabolism, pharmacology)
• Cell Division (drug effects)
• Cell Line, Tumor (drug effects, metabolism, pathology)
• Colonic Neoplasms (metabolism, pathology)
• Cyclin-Dependent Kinase Inhibitor p21
• Cyclins (metabolism)
• Humans
• Reverse Transcriptase Polymerase Chain Reaction (methods)
• Stearic Acids (metabolism, pharmacology)
• Up-Regulation (drug effects)