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. 2019;4(1):014.
Epub 2019 Aug 20.

Transcriptome-wide piRNA profiling in human brains for aging genetic factors

Affiliations

Transcriptome-wide piRNA profiling in human brains for aging genetic factors

Qiao Mao et al. Jacobs J Genet. 2019.

Abstract

Objective: Piwi-interacting RNAs (piRNAs) represent a molecular feature shared by all nonaging biological systems, including the germline and somatic cancer stem cells, which display an indefinite renewal capacity and lifespan-stable genomic integrity and are potentially immortal. Here, we tested the hypothesis that piRNA is a critical genetic determinant of aging in humans.

Methods: Expression of transcriptome-wide piRNAs (n=24k) was profiled in the human prefrontal cortex of 12 subjects (84.9±9.5, range 68-100, years of age) using microarray technology. We examined the correlation between these piRNAs' expression levels and age, adjusting for covariates including disease status.

Results: A total of 9,453 piRNAs were detected in brain. Including seven intergenic and three intronic piRNAs, ten piRNAs were significantly associated with age after correction for multiple testing (|r|=0.9; 1.9×10-5≤p≤9.9×10-5).

Conclusion: We conclude that piRNAs might play a potential role in determining the years of survival of humans. The underlying mechanisms might involve the suppression of transposable elements (TEs) and expression regulation of aging-associated genes.

Keywords: Alzheimer’s disease; aging; brain; gene expression; piRNA; transposable elements (TEs); years of survival.

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References

    1. Sharma AK, Nelson MC, Brandt JE, et al. Human CD34(+) stem cells express the hiwi gene, a human homologue of the Drosophila gene piwi. Blood. 2001;97(2):426–434. - PubMed
    1. Lee EJ, Banerjee S, Zhou H, et al. Identification of piRNAs in the central nervous system. RNA. 2011;17(6):1090–1099. - PMC - PubMed
    1. Qiu W, Guo X, Lin X, et al. Transcriptome-wide piRNA profiling in human brains of Alzheimer’s disease. Neurobiology of aging. 2017;57:170–177. - PMC - PubMed
    1. Huang CR, Burns KH, Boeke JD. Active transposition in genomes. Annual review of genetics. 2012;46:651–675. - PMC - PubMed
    1. Kazazian HH, Jr. Mobile DNA transposition in somatic cells. BMC biology. 2011;9:62. - PMC - PubMed

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