Evidence map›Paper›PMID 36378656›Full record

ArticlePloS one2022

In vitro methods to ensure absence of residual undifferentiated human induced pluripotent stem cells intermingled in induced nephron progenitor cells.

Hiraku Tsujimoto, Naoko Katagiri, Yoshihiro Ijiri, Ben Sasaki, Yoshifumi Kobayashi, Akira Mima, Makoto Ryosaka, Kenichiro Furuyama, Yoshiya Kawaguchi, Kenji Osafune

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.0field-weighted citation impact, top 26% 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

7 citing papers in PubMed, 12 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

10 authors at 1 institution in 1 country.

Hiraku TsujimotoCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.ORCID 0000-0002-5847-4132
Naoko KatagiriCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Yoshihiro IjiriCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Ben SasakiCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Yoshifumi KobayashiRege Nephro Co., Ltd., Med-Pharm Collaboration Building, Kyoto University, Kyoto, Japan.
Akira MimaRege Nephro Co., Ltd., Med-Pharm Collaboration Building, Kyoto University, Kyoto, Japan.
Makoto RyosakaCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Kenichiro FuruyamaCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Yoshiya KawaguchiCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.
Kenji OsafuneCenter for iPS Cell Research and Application (CiRA), Kyoto University, Kyoto, Japan.ORCID 0000-0001-7238-2763
Kyoto University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Cell therapies using human induced pluripotent stem cell (hiPSC)-derived nephron progenitor cells (NPCs) are expected to ameliorate acute kidney injury (AKI). However, using hiPSC-derived NPCs clinically is a challenge because hiPSCs themselves are tumorigenic. LIN28A, ESRG, CNMD and SFRP2 transcripts have been used as a marker of residual hiPSCs for a variety of cell types undergoing clinical trials. In this study, by reanalyzing public databases, we found a baseline expression of LIN28A, ESRG, CNMD and SFRP2 in hiPSC-derived NPCs and several other cell types, suggesting LIN28A, ESRG, CNMD and SFRP2 are not always reliable markers for iPSC detection. As an alternative, we discovered a lncRNA marker gene, MIR302CHG, among many known and unknown iPSC markers, as highly differentially expressed between hiPSCs and NPCs, by RNA sequencing and quantitative RT-PCR (qRT-PCR) analyses. Using MIR302CHG as an hiPSC marker, we constructed two assay methods, a combination of magnetic bead-based enrichment and qRT-PCR and digital droplet PCR alone, to detect a small number of residual hiPSCs in NPC populations. The use of these in vitro assays could contribute to patient safety in treatments using hiPSC-derived cells.

Indexed as

Induced Pluripotent Stem CellsNeuroblastomaRNA, Long NoncodingCell DifferentiationHumansIn Vitro TechniquesNephronsRNA, Long Noncoding

Identifiers

PMID36378656
PMCPMC9665373
OpenAlexW4309070579

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.