Evidence map›Paper›PMID 39067446›Full record

ArticleCell reports. Medicine2024

Isogenic patient-derived organoids reveal early neurodevelopmental defects in spinal muscular atrophy initiation.

Tobias Grass, Zeynep Dokuzluoglu, Felix Buchner, Ines Rosignol, Joshua Thomas, Antonio Caldarelli, Anna Dalinskaya, Jutta Becker, Fabian Rost, Michele Marass and 4 more

Abstract read
In one paragraph

Article in Cell reports. Medicine, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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

22 citing papers in PubMed.

  1. Using Brain Organoids to Explore Human Neurobiology.Cellular and molecular neurobiology · 2026
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  17. Application of Biomarkers in Spinal Muscular Atrophy.International journal of molecular sciences · 2025
    Review
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  19. Article
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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

14 authors.

Tobias GrassGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany. Electronic address: tobias.grass@dzne.de.
Zeynep DokuzluogluGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany.
Felix BuchnerGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany.
Ines RosignolGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany; Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden, Dresden, Germany.
Joshua ThomasGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany.
Antonio CaldarelliGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany.
Anna DalinskayaGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany.
Jutta BeckerInstitute of Human Genetics, University Hospital of Cologne, Cologne, Germany.
Fabian RostDRESDEN-concept Genome Center, Technology Platform at the Center for Molecular and Cellular Bioengineering, TUD, Dresden, Germany.
Michele MarassMax Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany; Center for Systems Biology Dresden, Dresden, Germany.
Brunhilde WirthInstitute of Human Genetics, University Hospital of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne, University of Cologne, Cologne, Germany; Center for Rare Diseases, University Hospital of Cologne, Cologne, Germany.
Marc BeyerSystems Medicine, DZNE, Bonn, Germany; PRECISE Platform for Single Cell Genomics and Epigenomics, DZNE & University of Bonn and West German Genome Center, Bonn, Germany; Immunogenomics & Neurodegeneration, DZNE, Bonn, Germany.
Lorenzo BonaguroSystems Medicine, DZNE, Bonn, Germany; Genomics & Immunoregulation, LIMES Institute, University of Bonn, Bonn, Germany.
Natalia Rodriguez-MuelaGerman Center for Neurodegenerative Diseases e.V. (DZNE), Dresden, Germany; Technische Universität Dresden (TUD), Center for Regenerative Therapies Dresden, Dresden, Germany; Max Planck Institute for Molecular Cell Biology and Genetics, Dresden, Germany. Electronic address: natalia.rodriguez-muela@dzne.de.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Whether neurodevelopmental defects underlie postnatal neuronal death in neurodegeneration is an intriguing hypothesis only recently explored. Here, we focus on spinal muscular atrophy (SMA), a neuromuscular disorder caused by reduced survival of motor neuron (SMN) protein levels leading to spinal motor neuron (MN) loss and muscle wasting. Using the first isogenic patient-derived induced pluripotent stem cell (iPSC) model and a spinal cord organoid (SCO) system, we show that SMA SCOs exhibit abnormal morphological development, reduced expression of early neural progenitor markers, and accelerated expression of MN progenitor and MN markers. Longitudinal single-cell RNA sequencing reveals marked defects in neural stem cell specification and fewer MNs, favoring mesodermal progenitors and muscle cells, a bias also seen in early SMA mouse embryos. Surprisingly, SMN2-to-SMN1 conversion does not fully reverse these developmental abnormalities. These suggest that early neurodevelopmental defects may underlie later MN degeneration, indicating that postnatal SMN-increasing interventions might not completely amend SMA pathology in all patients.

Indexed as

Induced Pluripotent Stem CellsMotor NeuronsMuscular Atrophy, SpinalOrganoidsSurvival of Motor Neuron 1 ProteinSurvival of Motor Neuron 2 ProteinAnimalsHumansMiceNeural Stem CellsSpinal CordSMN1 protein, humanSMN2 protein, humanSurvival of Motor Neuron 1 ProteinSurvival of Motor Neuron 2 Proteinisogenic SMA modelneurodevelopmental defectsneuromesodermal progenitorsorganoidsspinal cord

Identifiers

PMID39067446
PMCPMC11384962

What OpenQuestion holds

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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.