Evidence map›Paper›PMID 34456333›Full record

ArticleScientific reports2021

PCA-based unsupervised feature extraction for gene expression analysis of COVID-19 patients.

Kota Fujisawa, Mamoru Shimo, Y-H Taguchi, Shinya Ikematsu, Ryota Miyata

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.5field-weighted citation impact, top 18% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 26 citations in OpenAlex.

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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

5 authors at 4 institutions in 1 country.

Kota FujisawaSchool of Life Science and Technology, Tokyo Institute of Technology, Tokyo, 152-8550, Japan. fujisawa.k.ab@m.titech.ac.jp.
Mamoru ShimoGraduate School of Engineering and Science, University of the Ryukyus, Okinawa, 903-0213, Japan.
Y-H TaguchiDepartment of Physics, Chuo University, Tokyo, 112-8551, Japan.ORCID 0000-0003-0867-8986
Shinya IkematsuDepartment of Bioresources Engineering, National Institute of Technology, OkinawaCollege, Okinawa, 905-2192, Japan.
Ryota MiyataFaculty of Engineering, University of the Ryukyus, Okinawa, 903-0213, Japan. miyata26@tec.u-ryukyu.ac.jp.
University of the Ryukyus · JPChuo University · JPNational Institute of Technology Okinawa College · JPTokyo Institute of Technology · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Coronavirus disease 2019 (COVID-19) is raging worldwide. This potentially fatal infectious disease is caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). However, the complete mechanism of COVID-19 is not well understood. Therefore, we analyzed gene expression profiles of COVID-19 patients to identify disease-related genes through an innovative machine learning method that enables a data-driven strategy for gene selection from a data set with a small number of samples and many candidates. Principal-component-analysis-based unsupervised feature extraction (PCAUFE) was applied to the RNA expression profiles of 16 COVID-19 patients and 18 healthy control subjects. The results identified 123 genes as critical for COVID-19 progression from 60,683 candidate probes, including immune-related genes. The 123 genes were enriched in binding sites for transcription factors NFKB1 and RELA, which are involved in various biological phenomena such as immune response and cell survival: the primary mediator of canonical nuclear factor-kappa B (NF-κB) activity is the heterodimer RelA-p50. The genes were also enriched in histone modification H3K36me3, and they largely overlapped the target genes of NFKB1 and RELA. We found that the overlapping genes were downregulated in COVID-19 patients. These results suggest that canonical NF-κB activity was suppressed by H3K36me3 in COVID-19 patient blood.

Indexed as

Gene Regulatory NetworksBinding SitesCase-Control StudiesCOVID-19Epigenesis, GeneticGene Expression ProfilingGene Expression RegulationGenetic Predisposition to DiseaseHistonesHumansMachine LearningNF-kappa B p50 SubunitSignal TransductionTranscription Factor RelAHistonesNF-kappa B p50 SubunitNFKB1 protein, humanRELA protein, humanTranscription Factor RelA

Identifiers

PMID34456333
PMCPMC8403676
OpenAlexW3196912989

What OpenQuestion holds

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LicenceCC BY
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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.