Review: microRNAs in aging and dietary-restriction longevity across model organisms
This review describes microRNAs as regulators of aging pathways in worms, flies and mammals, as mediators of dietary restriction effects, and as possible minimally invasive biomarkers of biological aging; it is an abstract only. [1]
Automatic summary · not editorially reviewed
The key findings
The review reports age-dependent miRNA expression and longevity modulation via conserved pathways in worms, flies and mammals. [1]
Dietary restriction is described as reshaping miRNA programs controlling metabolic adaptation, stress resistance and nutrient sensing. [1]
Circulating miRNAs in blood, serum and urine are proposed as minimally invasive biomarkers of biological aging and age-related diseases. [1]
The source at a glance
- Study type / format
- Review (abstract only)
- Population / context
- Model organisms (Caenorhabditis elegans, Drosophila melanogaster, mammals) and, for biomarkers, circulating miRNAs in body fluids.
- Summary based on
- Study abstract
- Original publication
- July 28, 2026
miRNAs as aging regulators in model organisms
The review states that aging is a multifactorial process marked by progressive decline of cellular and tissue homeostasis. It reports that many microRNAs show age-dependent expression in Caenorhabditis elegans, Drosophila melanogaster and mammals, and that they modulate longevity by targeting conserved pathways such as insulin/IGF-1 signaling, mTOR, autophagy, mitochondrial homeostasis and inflammatory responses. The authors describe these small non-coding RNAs as network regulators coordinating several processes of organismal aging. These are described associations in model organisms, not demonstrated human lifespan effects.
Supporting source [1]
Dietary restriction and circulating miRNA biomarkers
According to the abstract, dietary restriction is one of the most robust and evolutionarily conserved lifespan-extending interventions. It is said to reshape miRNA expression programs controlling metabolic adaptation, stress resistance and nutrient-sensing pathways, making miRNAs mediators of this environmental longevity intervention. The review also reports that circulating miRNAs in blood, serum and urine may serve as minimally invasive biomarkers for biological aging and age-related diseases. The abstract does not give effect sizes, specific miRNAs or human outcome data.
Supporting source [1]
Review scope: biomarkers, therapeutic targets and proposed clocks
The authors summarize current insights into miRNA roles in lifespan regulation across model organisms, their involvement in dietary-restriction-mediated longevity, and emerging applications as diagnostic biomarkers and potential therapeutic targets. Future directions they discuss emphasize integrative multi-miRNA regulatory networks and miRNA-based aging clocks, which they say may offer new opportunities to understand aging mechanisms and develop strategies for healthy longevity. These are proposed research directions, not validated tools or treatments. The abstract does not report a systematic search, study numbers or follow-up.
Supporting source [1]
How to interpret this
Only the abstract was reviewed; the full text was not reviewed. The abstract reports no study numbers, effect sizes, specific miRNAs or human outcome data, and the biomarker and clock ideas are proposed applications, not validated tools.
Based on the study abstract; the full paper, tables and supplementary data were not reviewed.
Source & supporting passages
Fan J, Zhang G, Sun S, Zhang X, Li Y, Liu M, Xu P, Youssef M, Khanzada Z, Zhou Y, Xu Y. · europepmc.org · July 28, 2026