Evidence map›Paper›PMID 30266652›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2018

Downregulation of SNCA Expression by Targeted Editing of DNA Methylation: A Potential Strategy for Precision Therapy in PD.

Boris Kantor, Lidia Tagliafierro, Jeffrey Gu, Madison E Zamora, Ekaterina Ilich, Carole Grenier, Zhiqing Y Huang, Susan Murphy, Ornit Chiba-Falek

Open access · bronzeAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
127citing papers in PubMed, 3 pooled it
6.8field-weighted citation impact, top 2% 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

127 citing papers in PubMed, 3 syntheses or guidelines pooled it, 195 citations in OpenAlex.

  1. Next-generation pharmacological strategies for Parkinson's disease: a systematic literature review of symptom management and disease modification.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
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  6. Silencing of humanJournal of Huntington's disease · 2026
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  11. Genetic therapies for neurological diseases.Pharmacological reviews · 2026
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67 more citing papers are in PubMed but not listed here.

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 3 institutions in 1 country.

Boris KantorViral Vector Core, Duke University Medical Center, Durham, NC 27710, USA; Department of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA. Electronic address: boris.kantor@duke.edu.
Lidia TagliafierroDepartment of Neurology, Duke University Medical Center, Durham, NC 27710, USA; Center for Genomic and Computational Biology, Duke University Medical Center, Durham, NC 27710, USA.
Jeffrey GuDepartment of Neurology, Duke University Medical Center, Durham, NC 27710, USA; Center for Genomic and Computational Biology, Duke University Medical Center, Durham, NC 27710, USA.
Madison E ZamoraDepartment of Neurology, Duke University Medical Center, Durham, NC 27710, USA; Center for Genomic and Computational Biology, Duke University Medical Center, Durham, NC 27710, USA.
Ekaterina IlichViral Vector Core, Duke University Medical Center, Durham, NC 27710, USA; Department of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA.
Carole GrenierDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, USA.
Zhiqing Y HuangDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, USA.
Susan MurphyDivision of Gynecologic Oncology, Department of Obstetrics and Gynecology, Duke University Medical Center, Durham, NC 27710, USA.
Ornit Chiba-FalekDepartment of Neurology, Duke University Medical Center, Durham, NC 27710, USA; Center for Genomic and Computational Biology, Duke University Medical Center, Durham, NC 27710, USA. Electronic address: o.chibafalek@duke.edu.
Duke Medical Center · USDuke University · USDuke University Hospital · US

Funding

Lewy body neuropathologies and SNCA gene: variants expression and splicingR01NS085011 · NINDS · DUKE UNIVERSITY · PI CHIBA-FALEK, ORNIT · 2013 to 2017
$1.8M
NINDS NIH HHS R01 NS085011
6 · The paper itself

Abstract

Elevated levels of SNCA have been implicated in the pathogenesis of Parkinson's disease (PD), while normal physiological levels of SNCA are needed to maintain neuronal function. We ought to develop new therapeutic strategies targeting the regulation of SNCA expression. DNA methylation at SNCA intron 1 regulates SNCA transcription, and PD brains showed differential methylation levels compared to controls. Thus, DNA methylation at SNCA intron 1 is an attractive target for fine-tuned downregulation of SNCA levels. Here we developed a system, comprising an all-in-one lentiviral vector, for targeted DNA methylation editing within intron 1. The system is based on CRISPR-deactivated Cas9 (dCas9) fused with the catalytic domain of DNA-methyltransferase 3A (DNMT3A). Applying the system to human induced pluripotent stem cell (hiPSC)-derived dopaminergic neurons from a PD patient with the SNCA triplication resulted in fine downregulation of SNCA mRNA and protein mediated by targeted DNA methylation at intron 1. Furthermore, the reduction in SNCA levels by the guide RNA (gRNA)-dCas9-DMNT3A system rescued disease-related cellular phenotype characteristics of the SNCA triplication hiPSC-derived dopaminergic neurons, e.g., mitochondrial ROS production and cellular viability. We established that DNA hypermethylation at SNCA intron 1 allows an effective and sufficient tight downregulation of SNCA expression levels, suggesting the potential of this target sequence combined with the CRISPR-dCas9 technology as a novel epigenetic-based therapeutic approach for PD.

Indexed as

Genetic Therapyalpha-SynucleinBrainCell Culture TechniquesCell DifferentiationCRISPR-Cas SystemsDNA (Cytosine-5-)-MethyltransferasesDNA MethylationDNA Methyltransferase 3ADopaminergic NeuronsGene EditingGene Expression RegulationHumansInduced Pluripotent Stem CellsIntronsParkinson Diseasealpha-SynucleinDNA (Cytosine-5-)-MethyltransferasesDNA Methyltransferase 3ADNMT3A protein, humanRNA, Guide, CRISPR-Cas SystemsSNCA protein, humanCRISPR/dCas9DNA methylationhiPSC-derived neuronslentiviral vectorParkinson's diseaseSNCAtargeted epigenome editing

Identifiers

PMID30266652
PMCPMC6224806
OpenAlexW2889083697

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.