Evidence map›Paper›PMID 34551822›Full record

ArticleStem cell research & therapy2021

In vitro genome editing rescues parkinsonism phenotypes in induced pluripotent stem cells-derived dopaminergic neurons carrying LRRK2 p.G2019S mutation.

Kuo-Hsuan Chang, Cheng-Yen Huang, Chih-Hsin Ou-Yang, Chang-Han Ho, Han-Yi Lin, Chia-Lang Hsu, You-Tzung Chen, Yu-Chi Chou, Yi-Jing Chen, Ying Chen and 7 more

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 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 32 citations in OpenAlex.

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  6. Expanding the CRISPR/Cas toolkit: applications in proteomics and theranostics.Frontiers in bioengineering and biotechnology · 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

17 authors at 4 institutions in 1 country.

Kuo-Hsuan ChangDepartment of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan, Taiwan.
Cheng-Yen HuangThe First Core Laboratory, College of Medicine, National Taiwan University, Taipei, Taiwan.
Chih-Hsin Ou-YangDepartment of Neurology, National Taiwan University Hospital and School of Medicine, Taipei, 100, Taiwan.
Chang-Han HoDepartment of Neurology, National Taiwan University Hospital and School of Medicine, Taipei, 100, Taiwan.
Han-Yi LinDepartment of Neurology, National Taiwan University Hospital and School of Medicine, Taipei, 100, Taiwan.
Chia-Lang HsuDepartment of Medical Research, National Taiwan University Hospital, Taipei, Taiwan.
You-Tzung ChenGraduate Institute of Medical Genomics and Proteomics, College of Medicine, National Taiwan University, Taipei, Taiwan.
Yu-Chi ChouBiomedical Translation Research Center, Academia Sinica, Taipei, Taiwan.
Yi-Jing ChenDepartment of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan, Taiwan.
Ying ChenDepartment of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan, Taiwan.
Jia-Li LinDepartment of Neurology, Chang Gung Memorial Hospital-Linkou Medical Center, Chang Gung University School of Medicine, Taoyuan, Taiwan.
Ji-Kuan WangDepartment of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Pei-Wen LinDepartment of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Ying-Ru LinDepartment of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Miao-Hsia LinDepartment of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Chi-Kang TsengDepartment of Microbiology, College of Medicine, National Taiwan University, Taipei, Taiwan.
Chin-Hsien LinDepartment of Neurology, National Taiwan University Hospital and School of Medicine, Taipei, 100, Taiwan. chlin@ntu.edu.tw.ORCID 0000-0001-8566-7573
National Taiwan University · TWNational Taiwan University Hospital · TWChang Gung University · TWAcademia Sinica · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe c.G6055A (p.G2019S) mutation in leucine-rich repeat kinase 2 (LRRK2) is the most prevalent genetic cause of Parkinson's disease (PD). CRISPR/Cas9-mediated genome editing by homology-directed repair (HDR) has been applied to correct the mutation but may create small insertions and deletions (indels) due to double-strand DNA breaks. Adenine base editors (ABEs) could convert targeted A·T to G·C in genomic DNA without double-strand breaks. However, the correction efficiency of ABE in LRRK2 c.G6055A (p.G2019S) mutation remains unknown yet. This study aimed to compare the mutation correction efficiencies and off-target effects between HDR and ABEs in induced pluripotent stem cells (iPSCs) carrying LRRK2 c.G6055A (p.G2019S) mutation.

methodsA set of mutation-corrected isogenic lines by editing the LRRK2 c.G6055A (p.G2019S) mutation in a PD patient-derived iPSC line using HDR or ABE were established. The mutation correction efficacies, off-target effects, and indels between HDR and ABE were compared. Comparative transcriptomic and proteomic analyses between the LRRK2 p.G2019S iPSCs and isogenic control cells were performed to identify novel molecular targets involved in LRRK2-parkinsonism pathways.

resultsABE had a higher correction rate (13/53 clones, 24.5%) than HDR (3/47 clones, 6.4%). Twenty-seven HDR clones (57.4%), but no ABE clones, had deletions, though 14 ABE clones (26.4%) had off-target mutations. The corrected isogenic iPSC-derived dopaminergic neurons exhibited reduced LRRK2 kinase activity, decreased phospho-α-synuclein expression, and mitigated neurite shrinkage and apoptosis. Comparative transcriptomic and proteomic analysis identified different gene expression patterns in energy metabolism, protein degradation, and peroxisome proliferator-activated receptor pathways between the mutant and isogenic control cells.

conclusionsThe results of this study envision that ABE could directly correct the pathogenic mutation in iPSCs for reversing disease-related phenotypes in neuropathology and exploring novel pathophysiological targets in PD.

Indexed as

Induced Pluripotent Stem CellsParkinson DiseaseDopaminergic NeuronsGene EditingHumansLeucine-Rich Repeat Serine-Threonine Protein Kinase-2MutationPhenotypeProteomicsLeucine-Rich Repeat Serine-Threonine Protein Kinase-2LRRK2 protein, humanBase editingCRISPR-Cas9Genome editingInduced pluripotent stem cellsLRRK2Parkinson’s disease

Identifiers

PMID34551822
PMCPMC8456557
OpenAlexW3199612887

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.