Cited by 57Developmental Biology and Gene RegulationNeurogenesis and neuroplasticity mechanismsMicroRNA in disease regulation

An Lmx1b–miR135a2 regulatory circuit modulates Wnt1/Wnt signaling and determines the size of the midbrain dopaminergic progenitor pool

Open access
Anderegg, Angela, Lin, Hsin-Pin, Chen, Jun-An, Caronia-Brown, Giuliana, Cherepanova, Natalya, Yun, Beth, Joksimovic, Milan, Rock, Jason +3 more·2013·PLoS Genetics

Abstract

MicroRNAs regulate gene expression in diverse physiological scenarios. Their role in the control of morphogen related signaling pathways has been less studied, particularly in the context of embryonic Central Nervous System (CNS) development. Here, we uncover a role for microRNAs in limiting the spatiotemporal range of morphogen expression and function. Wnt1 is a key morphogen in the embryonic midbrain, and directs proliferation, survival, patterning and neurogenesis. We reveal an autoregulatory negative feedback loop between the transcription factor Lmx1b and a newly characterized microRNA, miR135a2, which modulates the extent of Wnt1/Wnt signaling and the size of the dopamine progenitor domain. Conditional gain of function studies reveal that Lmx1b promotes Wnt1/Wnt signaling, and thereby increases midbrain size and dopamine progenitor allocation. Conditional removal of Lmx1b has the opposite effect, in that expansion of the dopamine progenitor domain is severely compromised. Next, we provide evidence that microRNAs are involved in restricting dopamine progenitor allocation. Conditional loss of Dicer1 in embryonic stem cells (ESCs) results in expanded Lmx1a/b+ progenitors. In contrast, forced elevation of miR135a2 during an early window in vivo phenocopies the Lmx1b conditional knockout. When En1::Cre, but not Shh::Cre or Nes::Cre, is used for recombination, the expansion of Lmx1a/b+ progenitors is selectively reduced. Bioinformatics and luciferase assay data suggests that miR135a2 targets Lmx1b and many genes in the Wnt signaling pathway, including Ccnd1, Gsk3b, and Tcf7l2. Consistent with this, we demonstrate that this mutant displays reductions in the size of the Lmx1b/Wnt1 domain and range of canonical Wnt signaling. We posit that microRNA modulation of the Lmx1b/Wnt axis in the early midbrain/isthmus could determine midbrain size and allocation of dopamine progenitors. Since canonical Wnt activity has recently been recognized as a key ingredient for programming ESCs towards a dopaminergic fate in vitro, these studies could impact the rational design of such protocols.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1371/journal.pgen.1003973

Cites

73 of 73 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • The boundaries of the dopamine primordium are defined by transcription factor expression: the caudal extent by the Otx2/Gbx2 boundary, the rostral extent by the En1/Dbx1 boundary, and the dorsal extent by the Lmx1a/Nkx6.1 boundary.

    “The caudal extent is defined by the Otx2/Gbx2 boundary coincident with the morphological mid-hindbrain boundary [74]. The rostral extent is defined by the En1/Dbx1 gene expression boundary which is located in the diencephalic region [75–78]. The dorsal extent is defined by the Lmx1a/Nkx6.1 gene expression boundary [71,79–81].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 3

  1. [28]Blaess S, Bodea GO, Kabanova A, Chanet S, Mugniery E, et al (2011) Temporal-spatial changes in Sonic Hedgehog expression and signaling reveal different potentials of ventral mesencephalic progenitors to populate distinct ventral midbrain nuclei. Neural Dev 6: 29. 21689430 PMC3135491
  2. [30]Tang M, Miyamoto Y, Huang EJ (2009) Multiple roles of {beta}-catenin in controlling the neurogenic niche for midbrain dopamine neurons. Development 136: 2027– 2038. 19439492 PMC2685724
  3. [59]Inestrosa NC, Arenas E (2010) Emerging roles of Wnts in the adult nervous system. Nat Rev Neurosci 11: 77– 86. 20010950

Cited by

Sorted by citations

Authors
Anderegg, A., Lin, H.-P., Chen, J.-A., Caronia-Brown, G., Cherepanova, N., Yun, B., Joksimovic, M., Rock, J., Harfe, B. D., Johnson, R., & Awatramani, R.
Affiliations
  • Northwestern University (US)
  • Institute of Molecular Biology, Academia Sinica (TW)
  • University of Florida (US)
  • The University of Texas MD Anderson Cancer Center (US)
Corresponding author
Awatramani, Rajeshwar
Venue
PLoS Genetics
Published
2013-12-12
Volume
9
Issue
12
Pages
e1003973
ISSN
  • 1553-7390 (ISSN-L)
  • 1553-7404
OpenAlex
W2002526679
Cited by
57
References
73
Citations by year
2025: 3 · 2024: 1 · 2023: 5 · 2022: 1 · 2021: 2 · 2020: 5 · 2019: 10 · 2018: 6 · 2017: 4 · 2016: 4 · 2015: 11 · 2014: 5
FWCI
2.98
Type
journal article
Language
en
Open access
Locations
  • PLoS Genetics (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • eScholarship (California Digital Library) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • Brain Research Foundation
  • Whitehall Foundation
  • Northwestern University
  • National Institutes of Health (1f31ns065670-01a2)
  • National Institute of Neurological Disorders and Stroke (F31 NS065670, R01NS071081, NRSA NIH 1F31 NS065670-01A2, NIH 1RO1NS071081-01)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R01HD052785)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › MicroRNA in disease regulation
Keywords
Lmx1b, negative feedback loop, microRNA regulation, DICER1, Wnt/β-catenin signaling, GSK3B, TCF7L2, CCND1, dopaminergic differentiation, embryonic stem cells
MeSH terms
Animals, Cell Differentiation, Dopamine, Embryo, Mammalian, Humans, Mesencephalon, Parkinson Disease, Transcription Factors, Gene Expression Regulation, Developmental, MicroRNAs, Ribonuclease III, Wnt1 Protein, Mice, DEAD-box RNA Helicases, Embryonic Stem Cells, Neurogenesis, Dopaminergic Neurons, Wnt Signaling Pathway, LIM-Homeodomain Proteins

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review