Cited by 2,734Circadian rhythm and melatoninRetinal Development and DisordersPhotoreceptor and optogenetics research

Melanopsin-Containing Retinal Ganglion Cells: Architecture, Projections, and Intrinsic Photosensitivity

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Hattar, S., Liao, H.-W., Takao, M., Berson, D. M., Yau, K.-W.·2002·Science

Abstract

The primary circadian pacemaker, in the suprachiasmatic nucleus (SCN) of the mammalian brain, is photoentrained by light signals from the eyes through the retinohypothalamic tract. Retinal rod and cone cells are not required for photoentrainment. Recent evidence suggests that the entraining photoreceptors are retinal ganglion cells (RGCs) that project to the SCN. The visual pigment for this photoreceptor may be melanopsin, an opsin-like protein whose coding messenger RNA is found in a subset of mammalian RGCs. By cloning rat melanopsin and generating specific antibodies, we show that melanopsin is present in cell bodies, dendrites, and proximal axonal segments of a subset of rat RGCs. In mice heterozygous for tau-lacZ targeted to the melanopsin gene locus, β-galactosidase–positive RGC axons projected to the SCN and other brain nuclei involved in circadian photoentrainment or the pupillary light reflex. Rat RGCs that exhibited intrinsic photosensitivity invariably expressed melanopsin. Hence, melanopsin is most likely the visual pigment of phototransducing RGCs that set the circadian clock and initiate other non–image-forming visual functions.

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Crossref · 10.1126/science.1069609

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Authors
Hattar, S., Liao, H.-W., Takao, M., Berson, D. M., & Yau, K.-W.
Affiliations
  • Howard Hughes Medical Institute (US)
  • Neuroscience and
  • Brown University (US)
Corresponding author
  • Hattar, S.
  • Liao, H.-W.
  • Yau, K.-W.
Venue
Science
Published
2002-02-08
Volume
295
Issue
5557
Pages
1065-1070
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2035853180
Cited by
2,734
References
2
Citations by year
2026: 111 · 2025: 132 · 2024: 126 · 2023: 147 · 2022: 146 · 2021: 161 · 2020: 162 · 2019: 174 · 2018: 143 · 2017: 150 · 2016: 125 · 2015: 107 · 2014: 127 · 2013: 90 · 2012: 101
FWCI
27.07
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Eye Institute (R37EY006837)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Photoreceptor and optogenetics research
Keywords
melanopsin, retinal ganglion cells, circadian photoentrainment, suprachiasmatic nucleus, retinohypothalamic tract, non-image-forming vision, pupillary light reflex
MeSH terms
Melanopsin, Amino Acid Sequence, Animals, Axons, beta-Galactosidase, Biological Clocks, Brain, Cell Membrane, Circadian Rhythm, Cloning, Molecular, Dendrites, Fluorescent Antibody Technique, Lac Operon, Light, Molecular Sequence Data, Optic Nerve, Retinal Ganglion Cells, Suprachiasmatic Nucleus, Visual Pathways, Rod Opsins, Microscopy, Confocal, Mice, Rats

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