Evidence map›Paper›PMID 34874096›Full record

ArticleAging cell2022

Inhibition of DNA methyltransferase aberrations reinstates antioxidant aging suppressors and ameliorates renal aging.

Qi Gao, Fang Chen, Lijun Zhang, Ai Wei, Yongxiang Wang, Zhiwei Wu, Wangsen Cao

Open access · goldAbstract read
In one paragraph

Article in Aging cell, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 42 papers.

0numbers the graph read from it
0cells of the map it votes in
42citing papers in PubMed
3.6field-weighted citation impact, top 6% 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

42 citing papers in PubMed, 59 citations in OpenAlex.

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  13. Pretreatment withNutrients · 2025
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  18. Lysosomal-Associated Protein Transmembrane 5, Tubular Senescence, and Progression of CKD.Journal of the American Society of Nephrology : JASN · 2024
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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

7 authors at 1 institution in 1 country.

Qi GaoJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.
Fang ChenJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.
Lijun ZhangJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.
Ai WeiJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.
Yongxiang WangJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.
Zhiwei WuJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.
Wangsen CaoJiangsu Key Lab of Molecular Medicine, Nanjing University Medical School, Northern Jiangsu People's Hospital, Nanjing, China.ORCID 0000-0001-6209-3482
Northern Jiangsu People's Hospital · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

DNA methylation alterations play mechanistic roles in aging; however, the epigenetic regulators/mediators causally involved in renal aging remain elusive. Here, we report that natural and D-galactose (D-gal)-induced aging kidneys display marked suppression of antiaging factor NRF2 (nuclear factor erythroid-derived 2-like 2) and KLOTHO, accompanied by upregulations of DNA methyltransferase (DNMT) 1/3a/3b and NRF2/KLOTHO gene promoter hypermethylations. Administration of a DNMT inhibitor SGI-1072 effectively hypomethylated the promoters, derepressed NRF2/KLOTHO, and mitigated the structural and functional alterations of renal aging in D-gal mice. Moreover, oleuropein (OLP), an olive-derived polyphenol, also displayed similar epigenetic modulation and antiaging effects. OLP inhibited the epigenetic NRF2/KLOTHO suppressions in a gain of DNMT-sensitive manner in cultured renal cells, demonstrating a strong DNA-demethylating capacity. In NRF2 knockout and KLOTHO knockdown D-gal mice, OLP exhibited reduced antiaging effects with KLOTHO displaying a prominent gene effect and effect size; consistently in KLOTHO knockdown mice, the antiaging effects of SGI-1027 were largely abrogated. Therefore, the KLOTHO recovery is critical for the antiaging effects of DNA demethylation. Collectively, our data indicate that aberrant DNMT1/3a/3b elevations and the resultant suppression of antiaging factors contribute significantly to epigenetic renal aging, which might be targeted for epigenetic intervention by synthetic or natural DNA-demethylating agents.

Indexed as

AgingAnimalsAntioxidantsDisease Models, AnimalDNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3BEpigenomicsKidneyMiceAntioxidantsDNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3BDNA methylationepigeneticsKLOTHONRF2renal aging

Identifiers

PMID34874096
PMCPMC8761007
OpenAlexW4200217435

What OpenQuestion holds

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LicenceCC BY
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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.