Retrotransposons Down- and Up-Regulation in Aging Somatic Tissues

被引：4
|
作者：
Giordani, Giorgia [1 ]
Cavaliere, Valeria [1 ]
Gargiulo, Giuseppe [1 ]
Lattanzi, Giovanna [2 ,3 ]
Andrenacci, Davide [2 ,3 ]
机构：
[1] AlmaMater Univ Bologna, Dipartimento Farm & Biotecnol, I-40126 Bologna, Italy
[2] CNR, Inst Mol Genet, Luigi Luca Cavalli Sforza Unit Bologna, I-40136 Bologna, Italy
[3] IRCCS Ist Ortoped Rizzoli, I-40136 Bologna, Italy
来源：
CELLS | 2022年 / 11卷 / 01期
关键词：
longevity; transposons; gypsy; ZAM; Idefix; TRANSPOSABLE ELEMENTS; FLAMENCO LOCUS; GYPSY; ACTIVATION; RETROVIRUSES; RNAS; ZAM;
D O I：
10.3390/cells11010079
中图分类号：
Q2 [细胞生物学];
学科分类号：
071009 ; 090102 ;
摘要：
The transposon theory of aging hypothesizes the activation of transposable elements (TEs) in somatic tissues with age, leading to a shortening of the lifespan. It is thought that TE activation in aging produces an increase in DNA double-strand breaks, contributing to genome instability and promoting the activation of inflammatory responses. To investigate how TE regulation changes in somatic tissues during aging, we analyzed the expression of some TEs, as well as a source of small RNAs that specifically silence the analyzed TEs; the Drosophila cluster named flamenco. We found significant variations in the expression levels of all the analyzed TEs during aging, with a trend toward reduction in middle-aged adults and reactivation in older individuals that suggests dynamic regulation during the lifespan.
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页数：9
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