Evidence map›Paper›PMID 38782857›Full record

ArticleHuman cell2024

DNMT1 driven by mouse amniotic fluid mesenchymal stem cell exosomes improved corneal cryoinjury via inducing microRNA-33 promoter DNA hypermethylation modification in corneal epithelium cells.

Weiqi Xu, Xinfeng Fei, Zeyu Cui, Dikang Pan, Yan Liu, Te Liu

Abstract read
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In one paragraph

Article in Human cell, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

4 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Review
  4. Review
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

6 authors.

Weiqi Xu *Department of Ophthalmology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, China.
Xinfeng Fei *Department of Ophthalmology, Shanghai Fourth People's Hospital, School of Medicine, Tongji University, Shanghai, 200434, China.
Zeyu Cui *Shanghai Geriatric Institute of Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Building C, 365 Xiangyang Road, Shanghai, 200031, China.
Dikang Pan *Department of Vascular Surgery, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China.
Yan LiuDepartment of Ophthalmology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, 100 Haining Road, Shanghai, 200080, China. yanliu201410@126.com.
Te LiuShanghai Geriatric Institute of Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Building C, 365 Xiangyang Road, Shanghai, 200031, China. liute1979@shutcm.edu.cn.ORCID http://orcid.org/0000-0003-3976-3489

Funding

Science Foundation of Hongkou District Health Commission in Shanghai Hongwei2202-20
6 · The paper itself

Abstract

Severe corneal cryoinjury can cause permanent corneal swelling and bullous keratopathy, one of the main reason for loss of sight. Mouse amniotic fluid mesenchymal stem cells (mAF-MSCs) can repair corneal damage caused by freezing; however, whether the exosomes derived from mAF-MSCs have the same repair effect is unknown. In this study, the mAF-MSC-exosomes were transplanted into the eyeballs of corneal cryoinjured mice. Histopathological examination showed that the mAF-MSC-exosomes improved the corneal structure and status of corneal epithelial cells in corneal cryoinjured mice. RRBS-sequencing showed that compared with the control group, four genes (Rpl13-ps6, miR-33, Hymai, and Plagl1), underwent DNA hypermethylation modification after mAF-MSC-exosomes treatment. The result of FISH indicated that miR-33-3p hybridization signals were enhanced in corneal epithelial cells from mice treated with mAF-MSC-exosomes. Semi-quantitative PCR and western blotting indicated that mAF-MSC-exosomes contained high levels of DNMT1 mRNA and protein. Additionally, luciferase report assays indicated that miR-33-3p overexpression in NIH-3T3 mouse embryonic fibroblast cells inhibited the activity of luciferase carrying a sequence from the 3' untranslated region of Bcl6. Moreover, BCL6 mRNA and protein levels in corneal tissues from mice treated with mAF-MSC-exosomes were higher than those in the control group. Therefore, our results suggested that mAF-MSC-exosomes could repair corneal cryoinjury by releasing DNMT1, which induced hypermethylation of the miR-33 promoter in corneal epithelial cells. Consequent downregulated miR-33 transcription upregulated Bcl6 expression, ultimately achieving the repair of corneal cryoinjury in mice.

Indexed as

DNA (Cytosine-5-)-Methyltransferase 1DNA MethylationEpithelium, CornealExosomesMesenchymal Stem CellsMicroRNAsAnimalsCorneal InjuriesEpithelial CellsFreezingGene ExpressionMiceNIH 3T3 CellsPromoter Regions, GeneticDNA (Cytosine-5-)-Methyltransferase 1Dnmt1 protein, mouseMicroRNAsMirn33 microRNA, mouseCorneal cryoinjuryDNA methylationExosomesMicroRNAMurine amniotic fluid mesenchymal stem cells

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Registered trials

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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.