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Knockdown of paraoxonase 1 expression influences the ageing of human dermal microvascular endothelial cells.

Title
Knockdown of paraoxonase 1 expression influences the ageing of human dermal microvascular endothelial cells.
Authors
Yun Sun Lee;Chang Ook Park;Kwang Hoon Lee;Ju Hee Lee;Seongmin Noh;Na Ra Lee;Shan Jin;Ji Yeon Noh
Issue Date
2012
Journal Title
Experimental Dermatology
ISSN
0906-6705
Citation
Experimental Dermatology, Vol.21(9) : 682~687, 2012
Abstract
Skin is one of the most commonly studied tissues for microcirculation research owing to its close correlation of cutaneous vascular function, ageing and age-related cardiovascular events. To elucidate proteins that determine this correlation between endothelial cell function and ageing in the vascular environment of the skin, we performed a proteomic analysis of plasma samples from six donors in their 20s (young) and six donors in their 60s (old). Among identified proteins, paraoxonase 1 (PON1) was selected in this study. To elucidate the role of PON1 on skin ageing and determine how it controls cellular senescence, the characteristics of PON1 in human dermal microvascular endothelial cells (HDMECs) were determined. When the expression of endogenous PON1 was knocked-down by small interfering RNA (siRNA) targeting PON1, HDMECs showed characteristic features of cellular senescence such as increases in senescence-associated β-galactosidase stained cells and enlarged and flattened cell morphology. At 48 h post-transfection, the protein expression of p16 in PON1 siRNA-treated HDMECs was higher than that in scrambled siRNA-treated HDMECs. In addition, the expressions of moesin and rho GTP dissociation inhibitor, additional age-related candidate biomarkers, were decreased by PON1 knock-down in HDMECs. In conclusion, these results suggest that PON1 functions as an ageing-related protein and plays an important role in the cellular senescence of HDMECs.
URI
http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0625.2012.01555.x/abstract

http://ir.ymlib.yonsei.ac.kr/handle/22282913/90275
DOI
10.1111/j.1600-0625.2012.01555.x
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Dermatology
1. 연구논문 > 1. College of Medicine > Yonsei Biomedical Research Center
Yonsei Authors
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