Journals of Gerontology Series A: Biological Sciences and Medical Sciences Large Type Edition
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The Journals of Gerontology Series A: Biological Sciences and Medical Sciences 61:547-556 (2006)
© 2006 The Gerontological Society of America

A Polymorphism of the YTHDF2 Gene (1p35) Located in an Alu-Rich Genomic Domain Is Associated With Human Longevity

Maurizio Cardelli, Francesca Marchegiani, Luca Cavallone, Fabiola Olivieri, Simona Giovagnetti, Elena Mugianesi, Raffaella Moresi, Rosamaria Lisa and Claudio Franceschi

1 Department of Gerontological Research, Italian National Research Center on Aging (INRCA), Ancona, Italy.
2 Interdipartimental Centre L. Galvani (CIG), and 3 Department of Experimental Pathology, University of Bologna, Italy.
4 ER GenTech Laboratory, University of Ferrara, Italy.

Address correspondence to Maurizio Cardelli, PhD, Department of Gerontological Research, Italian National Research Center on Aging (I.N.R.C.A), Via Birarelli 8, 60100 Ancona, Italy. E-mail: maucard{at}libero.it

The uneven distribution of Alu repetitive elements in the human genome is related to specific functional properties of genomic regions. We report the identification of a locus associated with human longevity in one of the chromosomal regions with the highest density of Alu elements, in 1p35. The locus, corresponding to a (TG)n microsatellite in the YTHDF2 gene, was identified by characterizing an "anonymous" marker detectable through inter-Alu fingerprinting, which previously evidenced an increased homozygosity in centenarians. After genotyping 412 participants of different ages, including 137 centenarians, we confirmed the increased homozygosity in centenarians at this locus, and observed a concomitantly increased frequency of the most frequent allele and the corresponding homozygous genotype. Remarkably, the same genotype was associated with increased YTHDF2 messenger RNA levels in immortalized lymphocytes. Finally, YTHDF2 messenger RNA resulted to be mainly expressed in testis and placenta. The data suggest a possible role of this locus in human longevity.






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