Title:Circular RNA Involvement in Aging and Longevity
Volume: 23
Issue: 5
Author(s): Ruize Niu and Jia Liu*
Affiliation:
- Laboratory Zoology Department, Kunming Medical University, Kunming 650500, Yunnan, China
Keywords:
Aging, longevity, circular RNA, biomarkers, microRNAs, age-related diseases.
Abstract:
Background: Circular RNAs (circRNAs) are transcribed by RNA polymerase II and are
mostly generated by the back-splicing of exons in the protein-coding gene. Massive circRNAs are reported
to be differentially expressed in different species, implicating their prospects as aging biomarkers
or regulators in the aging progression.
Methods: The possible role of circRNAs in aging and longevity was reviewed by the query of circRNAs
from literature reports related to tissue, organ or cellular senescence, and individual longevity.
Results: A number of circRNAs have been found to positively and negatively modulate aging and
longevity through canonical aging pathways in the invertebrates Caenorhabditis elegans and Drosophila.
Recent studies have also shown that circRNAs regulate age-related processes and pathologies
such various mammalian tissues, as the brain, serum, heart, and muscle. Besides, three identified representative
circRNAs (circSfl, circGRIA1, and circNF1-419) were elucidated to correlate with aging
and longevity.
Conclusion: This review outlined the current studies of circRNAs in aging and longevity, highlighting
the role of circRNAs as a biomarker of aging and as a regulator of longevity.