Related Experiment Video
Updated: Aug 5, 2026
09:10
Measuring Single-Cell Aging with an Imaging-based Biomarker of Chromatin and Epigenetic Aging
Published on: January 30, 2026
Decoding aging clocks from a metabolomic perspective
Xueyu Qu1,2, Qiqi You3, Menglin Fan3
1College of Medicine, Wuhan University of Science & Technology, Wuhan, China.
Peerj
|July 28, 2026
Summary
Metabolomics offers a new way to measure biological age, overcoming limitations of current epigenetic clocks. This approach enhances aging clock accuracy and biological understanding for better healthspan extension.
Area of Science:
- Biogerontology
- Metabolomics
- Biomarker Discovery
Background:
- Chronological aging differs from biological aging, with current epigenetic clocks having limitations.
- Metabolomics captures real-time physiological status, reflecting biological events.
- There's a need for improved aging clocks that incorporate metabolic data.
Purpose of the Study:
- To review aging clocks using a metabolomic perspective.
- To propose a research workflow for developing metabolomic aging clocks.
- To enhance the accuracy and biological plausibility of aging biomarkers.
Main Methods:
- Data preprocessing, feature selection, and model construction for metabolomic data.
- A three-phase causal strategy: global screening, local verification, and dynamic validation.
- Evaluation of translational prospects and applied value of metabolomic aging clocks.
Main Results:
- Metabolomic aging clocks can improve predictive accuracy over epigenetic clocks.
- The proposed workflow and causal strategy strengthen biological plausibility.
- Metabolite-derived biomarkers offer enhanced causal inference potential.
Conclusions:
- Metabolomics provides a powerful lens for developing advanced aging clocks.
- This integrated methodology can extend human healthspan.
- Metabolomic aging clocks have significant translational value for aging-related diseases.
Related Concept Videos
01:26Aging
Aging is a complex biological phenomenon influenced by various processes that affect cellular and systemic functions. Several prominent theories attempt to explain its mechanisms, highlighting cellular limitations, oxidative damage, and hormonal changes as central factors in aging.
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
Cellular Clock Theory
The cellular clock theory posits that the human lifespan is closely tied to the finite capacity of cells to divide, a phenomenon governed by telomeres, which are protective caps at the ends of...
02:19Circadian Rhythms and Gene Regulation
The biological clock is involved in many aspects of regulating complex physiology in all animals. It was in 1935 when German zoologists, Hans Kalmus and Erwin Bünning, discovered the existence of circadian rhythm in Drosophila melanogaster. However, the internal molecular mechanisms behind the circadian clock remained a mystery until 1984, when Jeffrey C. Hall, Michael Rosbash, and Michael W. Young discovered the expression of the Per gene oscillating over a 24-hour cycle. In subsequent years,...
01:37Mitochondria
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...