Cited by 103Retinal Development and DisordersNeurogenesis and neuroplasticity mechanismsRetinal Diseases and Treatments

Notch and Wnt signaling mediated rod photoreceptor regeneration by Müller cells in adult mammalian retina

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Del Debbio, Carolina Beltrame, Balasubramanian, Sudha, Parameswaran, Sowmya, Chaudhuri, Anathbandhu, Qiu, Fang, Ahmad, Iqbal·2010·PLoS ONE

Abstract

BACKGROUND: Evidence emerging from a variety of approaches used in different species suggests that Müller cell function may extend beyond its role of maintaining retinal homeostasis to that of progenitors in the adult retina. Enriched Müller cells in vitro or those that re-enter cell cycle in response to neurotoxin-damage to retina in vivo display multipotential and self-renewing capacities, the cardinal features of stem cells. METHODOLOGY/PRINCIPAL FINDINGS: We demonstrate that Notch and Wnt signaling activate Müller cells through their canonical pathways and that a rare subset of activated Müller cells differentiates along rod photoreceptor lineage in the outer nuclear layer. The differentiation of activated Müller cells along photoreceptor lineage is confirmed by multiple approaches that included Hoechst dye efflux analysis, genetic analysis using retina from Nrl-GFP mice, and lineage tracing using GS-GFP lentivirus in wild type and rd mice in vitro and S334ter rats in vivo. Examination of S334ter rats for head-neck tracking of visual stimuli, a behavioral measure of light perception, demonstrates a significant improvement in light perception in animals treated to activate Müller cells. The number of activated Müller cells with rod photoreceptor phenotype in treated animals correlates with the improvement in their light perception. CONCLUSION/SIGNIFICANCE: In summary, our results provide a proof of principle for non-neurotoxin-mediated activation of Müller cells through Notch and Wnt signaling toward the regeneration of rod photoreceptors.

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Authors
Del Debbio, C. B., Balasubramanian, S., Parameswaran, S., Chaudhuri, A., Qiu, F., & Ahmad, I.
Affiliations
University of Nebraska Medical Center (US)
Corresponding author
Ahmad, Iqbal
Venue
PLoS ONE
Published
2010-08-26
Volume
5
Issue
8
Pages
e12425
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2075249408
Cited by
103
References
58
Citations by year
2026: 3 · 2025: 3 · 2023: 3 · 2022: 3 · 2021: 6 · 2020: 7 · 2019: 4 · 2018: 6 · 2017: 6 · 2016: 11 · 2015: 13 · 2014: 10 · 2013: 10 · 2012: 12
FWCI
3.65
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • U.S. Department of Health and Human Services
  • Research to Prevent Blindness
  • Lincy Foundation
  • Nebraska Department of Health and Human Services
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
Keywords
Müller cells, Notch signaling, Wnt signaling, retinal stem cells, light perception
MeSH terms
Animals, Mammals, Mice, Inbred C57BL, Regeneration, Retina, Vision, Ocular, Retinal Rod Photoreceptor Cells, Wnt Proteins, Mice, Rats, Receptors, Notch

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