Evidence map›Paper›PMID 34294122›Full record

ArticleStem cell research & therapy2021

The tRNA-derived fragment 5026a inhibits the proliferation of gastric cancer cells by regulating the PTEN/PI3K/AKT signaling pathway.

Linwen Zhu, Zhe Li, Xiuchong Yu, Yao Ruan, Yijing Shen, Yongfu Shao, Xinjun Zhang, Guoliang Ye, Junming Guo

Open access · goldAbstract read
In one paragraph

Article in Stem cell research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
4.2field-weighted citation impact, top 4% 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

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 70 citations in OpenAlex.

  1. Pooled it
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  12. The Roles of tRNA-Derived Fragments in Cancer: Updates and Perspectives.International journal of molecular sciences · 2025
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  18. Navigating the Molecular Signaling: Deciphering Cancer Stem Cell Self-Renewal Pathways.International journal of molecular and cellular medicine · 2025
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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

9 authors at 1 institution in 1 country.

Linwen ZhuDepartment of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, 315020, China.
Zhe LiDepartment of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, 315020, China.
Xiuchong YuDepartment of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.
Yao RuanDepartment of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.
Yijing ShenDepartment of Biochemistry and Molecular Biology, and Zhejiang Key Laboratory of Pathophysiology, Medical School of Ningbo University, Ningbo, 315211, China.
Yongfu ShaoDepartment of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, 315020, China.
Xinjun ZhangDepartment of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, 315020, China.
Guoliang YeDepartment of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, 315020, China.
Junming GuoDepartment of Gastroenterology, The Affiliated Hospital of Ningbo University School of Medicine, Ningbo, 315020, China. guojunming@nbu.edu.cn.ORCID 0000-0003-2026-1075
Ningbo University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRecently, tRNA-derived fragments (tRFs) have been shown to serve important biological functions. However, the role of tRFs in gastric cancer has not been fully elucidated. This study aimed to identify the tumor suppressor role of tRF-5026a (tRF-18-79MP9P04) in gastric cancer.

methodsQuantitative reverse transcription-polymerase chain reaction (qRT-PCR) was first used to detect tRF-5026a expression levels in gastric cancer tissues and patient plasma. Next, the relationship between tRF-5026a levels and clinicopathological features in gastric cancer patients was assessed. Cell lines with varying tRF-5026a levels were assessed by measuring tRF-5026a using qRT-PCR. After transfecting cell lines with a tRF-5026a mimic or inhibitor, cell proliferation, colony formation, migration, apoptosis, and cell cycle were evaluated. The expression levels of related proteins in the PTEN/PI3K/AKT pathway were also analyzed by Western blotting. Finally, the effect of tRF-5026a on tumor growth was tested using subcutaneous tumor models in nude mice.

resultstRF-5026a was downregulated in gastric cancer patient tissues and plasma samples. tRF-5026a levels were closely related to tumor size, had a certain diagnostic value, and could be used to predict overall survival. tRF-5026a was also downregulated in gastric cancer cell lines. tRF-5026a inhibited the proliferation, migration, and cell cycle progression of gastric cancer cells by regulating the PTEN/PI3K/AKT signaling pathway. Animal experiments showed that upregulation of tRF-5026a effectively inhibited tumor growth.

conclusionstRF-5026a (tRF-18-79MP9P04) is a promising biomarker for gastric cancer diagnostics and has tumor suppressor effects mediated through the PTEN/PI3K/AKT signaling pathway.

Indexed as

Proto-Oncogene Proteins c-aktStomach NeoplasmsAnimalsApoptosisCell Line, TumorCell ProliferationGene Expression Regulation, NeoplasticHumansMiceMice, NudePhosphatidylinositol 3-KinasesPTEN PhosphohydrolaseRNA, TransferSignal TransductionPhosphatidylinositol 3-KinasesProto-Oncogene Proteins c-aktPTEN PhosphohydrolasePTEN protein, humanRNA, TransferGastric cancerPI3KPTENtRF-18-79MP9P04tRF-5026atRNA-derived small RNAs

Identifiers

PMID34294122
PMCPMC8296675
OpenAlexW3183789380

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.