Cited by 1,395RNA Research and SplicingMicroRNA in disease regulationNeurogenesis and neuroplasticity mechanisms

The MicroRNA miR-124 Promotes Neuronal Differentiation by Triggering Brain-Specific Alternative Pre-mRNA Splicing

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Makeyev, Eugene V., Zhang, Jiangwen, Carrasco, Monica A., Maniatis, Tom·2007·Molecular Cell

Abstract

Both microRNAs and alternative pre-mRNA splicing have been implicated in the development of the nervous system (NS), but functional interactions between these two pathways are poorly understood. We demonstrate that the neuron-specific microRNA miR-124 directly targets PTBP1 (PTB/hnRNP I) mRNA, which encodes a global repressor of alternative pre-mRNA splicing in nonneuronal cells. Among the targets of PTBP1 is a critical cassette exon in the pre-mRNA of PTBP2 (nPTB/brPTB/PTBLP), an NS-enriched PTBP1 homolog. When this exon is skipped, PTBP2 mRNA is subject to nonsense-mediated decay (NMD). During neuronal differentiation, miR-124 reduces PTBP1 levels, leading to the accumulation of correctly spliced PTBP2 mRNA and a dramatic increase in PTBP2 protein. These events culminate in the transition from non-NS to NS-specific alternative splicing patterns. We also present evidence that miR-124 plays a key role in the differentiation of progenitor cells to mature neurons. Thus, miR-124 promotes NS development, at least in part by regulating an intricate network of NS-specific alternative splicing.

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Crossref · 10.1016/j.molcel.2007.07.015

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  • MTAG benchmark against height and BMI added no significant loci to the list of ASD-only significant associations.

    “Moreover, we benchmarked against MTAG running two very large and heritable traits (height 74 , n=252,288, and BMI 24 , n=322,154) with no expected links to ASD and no significant loci were added to the list of ASD-only significant associations.”
  • The interplay between miRNAs and RBPs leads to global changes in gene expression in which miRNAs control expression of RBPs to regulate tissue-specific RNA processing decisions.

    “The interplay between miRNAs and RBPs leads to global changes in gene expression in which miRNA(s) control expression of RBPs to regulate tissue-specific RNA processing decisions (Boutz et al. 2007; Makeyev et al. 2007; Kalsotra et al. 2010; van Kouwenhove et al. 2011; Misra et al. 2020)”
  • miR-124 promotes neuronal differentiation, in part through targeting of a splicing factor.

    “miR-124 promotes neuronal differentiation, in part through targeting of a splicing factor (Makeyev et al., 2007).”
  • miR-124 promotes differentiation of neuronal progenitors to mature neurons by targeting small C-terminal domain phosphatase-1 and polypyrimidine tract-binding protein-1.

    “It promotes differentiation of neuronal progenitors to mature neurons by targeting small C-terminal domain phosphatase-1 and polypyrimidine tract–binding protein-1 that repress expression of neuronal genes in non-neuronal cells18,20,40.”
  • Repression of Ptbp2 exon 10 by PTBP1 leads to nonsense-mediated mRNA decay of the Ptbp2 transcript and prevents its expression in PTBP1+ cells.

    “The repression of exon 10 leads to nonsense-mediated mRNA decay (NMD) of the Ptbp2 transcript and prevents its expression in PTBP1+ cells15,20,21.”

    From The neurogenetics of alternative splicing (2016) · cites this paper as [15]

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Authors
Makeyev, E. V., Zhang, J., Carrasco, M. A., & Maniatis, T.
Affiliations
Harvard University (US)
Corresponding author
Maniatis, Tom
Venue
Molecular Cell
Publisher
Elsevier BV
Published
2007-08
Volume
27
Issue
3
Pages
435-448
ISSN
1097-2765 (ISSN-L)
OpenAlex
W2038874091
Cited by
1,395
References
61
Citations by year
2026: 26 · 2025: 51 · 2024: 50 · 2023: 60 · 2022: 47 · 2021: 61 · 2020: 67 · 2019: 63 · 2018: 72 · 2017: 70 · 2016: 92 · 2015: 92 · 2014: 108 · 2013: 109 · 2012: 92
FWCI
32.88
Type
journal article
Language
en
Open access
Locations
  • Molecular Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • The HKU Scholars Hub (University of Hong Kong) (submittedVersion)
Funders
National Institute of Neurological Disorders and Stroke (R01NS043915)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA Research and Splicing
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
miR-124, neuronal differentiation, alternative splicing, PTBP1, PTBP2, nonsense-mediated mRNA decay, microRNA target regulation, brain development, neural progenitor cells
MeSH terms
Animals, Brain, Cell Differentiation, Cells, Cultured, Exons, Humans, Mitosis, Nerve Tissue Proteins, Neuroblastoma, Neurons, RNA Precursors, RNA Processing, Post-Transcriptional, RNA, Messenger, Transfection, Alternative Splicing, Gene Expression Regulation, Developmental, Heterogeneous-Nuclear Ribonucleoproteins, MicroRNAs, Polypyrimidine Tract-Binding Protein, Mice

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