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Cell-permeable peptide shows promise for controlling cardiovascular disease
Date:4/17/2013

Philadelphia, PA, April 16, 2013 Atherosclerosis sometimes called "hardening of the arteries" is a leading cause of death and morbidity in Western countries. A cell-permeable peptide containing the NF-ĸB nuclear localization sequence (NLS) shows promise as a potential agent in controlling the development of atherosclerotic disease. This study is published in the May 2013 issue of The American Journal of Pathology.

Atherosclerosis is a chronic inflammatory disease of the arterial and vascular wall. The objective of many therapeutic compounds is to modulate atherogenesis the process that leads to the formation of fatty tissue-containing plaques that stick to the cell wall. Numerous cellular and molecular inflammatory components are involved in the disease process, and uncontrolled activation of pro-inflammatory transcription factors, such as nuclear factor-B (NF-ĸB), plays a significant role. Several NF-ĸB inhibitors are in phase II-III clinical trials against various inflammatory diseases, but most cardiovascular research is still in the preliminary laboratory experimental phase.

Investigators in Spain, the United States, the United Kingdom, and Germany studied the anti-inflammatory and atheroprotective effects of a cell-permeable peptide containing the NF-ĸB NLS. In vitro tests clearly established that NLS peptide blocks the nuclear import of activated NF-ĸB and inhibits NF-ĸB activation in vascular cells. These findings were corroborated in vivo in ApoE knockout mice, an experimental model relevant to human atherosclerosis. In these experiments, the mice were fed a high-fat diet and treated with either NLS peptide or vehicle (control group).

The results showed that systemic administration of NLS peptide reduced the nuclear NF-ĸB activity in vascular smooth muscle cells (VSMCs) and macrophages of aortic plaques of mice. More importantly, NLS peptide inhibited lesion development in mice ei
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Contact: David Sampson
ajpmedia@elsevier.com
215-239-3171
Elsevier Health Sciences
Source:Eurekalert

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