Date of Award

12-1-2001

Degree Type

Restricted Access Thesis

Degree Name

Master of Science

Field of Study

Microbiology and Immunology

Department

Graduate School of Biomedical Sciences

First Advisor

Alakananda Basir

Second Advisor

Ming-Chi Wu

Abstract

Johnson, C., The regulation of p53 by protein kinase C in anticancer drug-induced apoptosis. Master of Science (Microbiology and Immunology), December, 2001. 43 pp., 11 figures, references, 6 titles. The tumor suppression protein p53 has been implicated in DNA damage-induced apoptosis. Previous studies demonstrated that the protein kinase C (PKC) signal transduction pathway regulates apoptosis induced by the DNA damaging agent cisplatin and is deregulated in cisplatin-resistant cells. The present study examined whether PKC influences p53 and, hence, cellular sensitivity to cisplatin. Basal p53 levels were elevated in cisplatin-resistant HeLa (HeLa/CP) cells as compared to parental HeLa cells. Cisplatin further increased p53 levels in HeLA/CP, but not in HeLA cells. However, rottlerin, a PKC-δ inhibitor that prevents cisplatin-induced apoptosis, caused p53 accumulation in HeLa cells treated with cisplatin. Rottlerin stabilized p53 in response to cisplatin in HeLa cells, whereas cisplatin alone was sufficient to stabilize p53 in HeLa/CP cells.

Comments

Johnson, C., The regulation of p53 by protein kinase C in anticancer drug-induced apoptosis. Master of Science (Microbiology and Immunology), December, 2001. 43 pp., 11 figures, references, 6 titles. W 4.5 J663R 2001

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