alexa SIRT1, IGFBP-3 and CAV1 Promoter DNA Methylation in Aging
ISSN: 2161-1025

Translational Medicine
Open Access

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Research Article

SIRT1, IGFBP-3 and CAV1 Promoter DNA Methylation in Aging

Carolina Oliveira Gigek1*, Luara Carolina Frias Lisboa1, Patricia Natalia Oliveira Silva1, Mariana Ferreira Leal1, Roger W de Labio2, Spencer Luiz Marques Payão2 and Marilia de Arruda Cardoso Smith1

1Discipline of Genetics, Department of Morphology and Genetics, Federal University of São Paulo, SP, Brazil

2Laboratory of Genetics, Blood Center, Faculty of Medicine of Marilia (FAMEMA), Marilia, SP, Brazil

*Corresponding Author:
Carolina de Oliveira Gigek
Paulista School of Medicine
Federal University of Sao Paulo
(UNIFESP)Rua Botucatu 740, Ed Leitao da Cunha
04023-900, Sao Paulo - SP – Brazil
Tel: 55 (11) 55764260
Fax: 55 (11) 55764264
E-mail: [email protected]

Received Date: May 16, 2014; Accepted Date: June 27, 2014; Published Date: July 01, 2014

Citation: Gigek CO, Lisboa LCF, Silva PNO, Leal MF, de Labio RW, et al. (2014) SIRT1, IGFBP-3 and CAV1 Promoter DNA Methylation in Aging . Transl Med (Sunnyvale) 4:133. doi:10.4172/2161-1025.1000133

Copyright: © 2014 Gigek CO, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.



The human genome is a fragile and highly conserved structure that accumulates a wide range of damaging alterations with age. Long-term alterations in the transcriptional potential of a cell are heritable and these changes are called epigenetics. The most studied alteration is the DNA methylation, which can regulate gene expression, often blocking gene transcription. The relationship between epigenetics and aging was proposed many years ago, and a decrease in the genomic global DNA methylation with age was largely observed. In this study we describe the methylation status of SIRT1, IGFBP-3 and CAV1 in a young and an older group of healthy individuals by methylation-specific PCR. SIRT1and IGFBP-3 promoter methylation frequency was significantly higher in the older than in the young adult group. Moreover, when combining promoter methylation status of several genes we observed that the total number of methylated promoters more than 85% of older individuals presented 4 promoters against only 46% of young adults. These findings may suggest that with increasing age there is an epigenetic switching to gene repression. The understanding of age-related genes methylation status can lead to a better comprehension of the role of epigenetic variation in the aging process.

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