Evidence map›Paper›PMID 19189975›Full record

SynthesisBioinformatics (Oxford, England)2009

Meta-analysis of age-related gene expression profiles identifies common signatures of aging.

João Pedro de Magalhães, João Curado, George M Church

Open access · bronzeAbstract readMeta-Analysis
In one paragraph

Synthesis in Bioinformatics (Oxford, England), 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 464 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
464citing papers in PubMed, 5 pooled it
13.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

464 citing papers in PubMed, 5 syntheses or guidelines pooled it, 752 citations in OpenAlex.

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  6. Trial
  7. Differential gene expression in response to AWARENESS: A randomized controlled trial of an intersectional minority stress intervention.Health psychology : official journal of the Division of Health Psychology, American Psychological Association · 2025
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  9. Embracing non-linearity in human ageing.Nature reviews. Genetics · 2026
    Review
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404 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

João Pedro de MagalhãesDepartment of Genetics, Harvard Medical School, Boston, MA 02115, USA. jp@senescence.info
João Curado
George M Church
Harvard University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

motivationNumerous microarray studies of aging have been conducted, yet given the noisy nature of gene expression changes with age, elucidating the transcriptional features of aging and how these relate to physiological, biochemical and pathological changes remains a critical problem.

resultsWe performed a meta-analysis of age-related gene expression profiles using 27 datasets from mice, rats and humans. Our results reveal several common signatures of aging, including 56 genes consistently overexpressed with age, the most significant of which was APOD, and 17 genes underexpressed with age. We characterized the biological processes associated with these signatures and found that age-related gene expression changes most notably involve an overexpression of inflammation and immune response genes and of genes associated with the lysosome. An underexpression of collagen genes and of genes associated with energy metabolism, particularly mitochondrial genes, as well as alterations in the expression of genes related to apoptosis, cell cycle and cellular senescence biomarkers, were also observed. By employing a new method that emphasizes sensitivity, our work further reveals previously unknown transcriptional changes with age in many genes, processes and functions. We suggest these molecular signatures reflect a combination of degenerative processes but also transcriptional responses to the process of aging. Overall, our results help to understand how transcriptional changes relate to the process of aging and could serve as targets for future studies. AVAILABILITY: http://genomics.senescence.info/uarrays/signatures.html. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.

Indexed as

Transcription, GeneticAgingAnimalsGene Expression ProfilingHumansMiceRats

Identifiers

PMID19189975
PMCPMC2732303
OpenAlexW2108700752

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.