Cited by 67Pluripotent Stem Cells ResearchNeurogenesis and neuroplasticity mechanismsMicroRNA in disease regulation

Deconstructing Stepwise Fate Conversion of Human Fibroblasts to Neurons by MicroRNAs

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Cates, Kitra, McCoy, Matthew J., Kwon, Ji-Sun, Liu, Yangjian, Abernathy, Daniel G., Zhang, Bo, Liu, Shaopeng, Gontarz, Paul +8 more·2021·Cell Stem Cell

Abstract

Cell-fate conversion generally requires reprogramming effectors to both introduce fate programs of the target cell type and erase the identity of starting cell population. Here, we reveal insights into the activity of microRNAs miR-9/9∗ and miR-124 (miR-9/9∗-124) as reprogramming agents that orchestrate direct conversion of human fibroblasts into motor neurons by first eradicating fibroblast identity and promoting uniform transition to a neuronal state in sequence. We identify KLF-family transcription factors as direct target genes for miR-9/9∗-124 and show their repression is critical for erasing fibroblast fate. Subsequent gain of neuronal identity requires upregulation of a small nuclear RNA, RN7SK, which induces accessibilities of chromatin regions and neuronal gene activation to push cells to a neuronal state. Our study defines deterministic components in the microRNA-mediated reprogramming cascade.

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  • The miRNA+TFs approach generated a highly enriched neuronal population as previously characterized by single cell and bulk RNA-seq and electrically active cells in 2D culture, showing inward and outward currents and multiple action potentials measured by whole-cell recording.

    “This miRNA+TFs approach generated a highly enriched neuronal population as previously characterized by single cell and bulk RNA-seq (20, 28, 29) and electrically active cells in 2D culture, showing inward and outward currents and multiple action potentials measured by whole-cell recording (Fig. S1A).”

    From Modeling late-onset Alzheimer’s disease neuropathology via direct neuronal reprogramming (2024) · cites this paper as [29]

    Split into 2 atoms — 1 confirmed, 0 partially supported, 0 disputed, 0 misattributed, 1 unverifiable. Expand the claim to see per-atom verdicts.

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  • MiR-9/9* and miR-124, when expressed in human adult fibroblasts, induce chromatin reconfiguration leading to sequential steps of fibroblast identity erasure and neuronal program activation with high efficiency reaching over 80% of conversion rate.

    “MiR-9/9* and miR-124 (miR-9/9*−124), when expressed in human adult fibroblasts, induce chromatin reconfiguration leading to sequential steps of fibroblast identity erasure and neuronal program activation with high efficiency reaching over 80% of conversion rate (28, 29).”

    From Modeling late-onset Alzheimer’s disease neuropathology via direct neuronal reprogramming (2024) · cites this paper as [29]

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  • MiR-9/9*−124-induced neurons are primarily composed of neurons as previously characterized by single-cell RNA-seq.

    “MiR-9/9*−124-induced neurons are primarily composed of neurons as previously characterized by single-cell RNA-seq (20, 29).”

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Authors
Cates, K., McCoy, M. J., Kwon, J.-S., Liu, Y., Abernathy, D. G., Zhang, B., Liu, S., Gontarz, P., Kim, W. K., Chen, S., Kong, W., Ho, J. N., Burbach, K. F., Gabel, H. W., Morris, S. A., & Yoo, A. S.
Affiliations
Washington University in St. Louis (US)
Corresponding author
Yoo, Andrew S.
Venue
Cell Stem Cell
Publisher
Elsevier BV
Published
2021-01
Volume
28
Issue
1
Pages
127-140.e9
ISSN
  • 1875-9777 (ISSN-L)
  • 1934-5909
OpenAlex
W3040771723
Cited by
67
References
84
Citations by year
2026: 10 · 2025: 9 · 2024: 15 · 2023: 13 · 2022: 10 · 2021: 10
FWCI
2.68
Type
journal article
Language
en
Open access
Locations
  • Cell stem cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • Cure Alzheimer's Fund (4DP2NS083372)
  • National Institute on Aging
  • National Institute of Neurological Disorders and Stroke (R01NS107488, DP2NS083372)
  • Edward Mallinckrodt, Jr. Foundation
  • National Institutes of Health
  • Alfred P. Sloan Foundation
  • Paul G. Allen Frontiers Group
  • National Institute of General Medical Sciences
  • Vallee Foundation
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Pluripotent Stem Cells Research
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
Keywords
fibroblast-to-neuron conversion, motor neurons, miR-124, KLF transcription factors, small nuclear RNA, chromatin accessibility, neuronal identity, cell fate conversion
MeSH terms
Cell Differentiation, Chromatin, Fibroblasts, Humans, Transcription Factors, MicroRNAs, Cellular Reprogramming

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