期刊
CELLULAR AND MOLECULAR LIFE SCIENCES
卷 78, 期 3, 页码 889-907出版社
SPRINGER BASEL AG
DOI: 10.1007/s00018-020-03641-5
关键词
Intrinsically photosensitive retinal ganglion cells; Melanopsin; Non-image-forming visual pathway; Pattern vision; Circadian; Retina
资金
- Sloan Research Fellowship
- NIH [1DP2EY022584]
The discovery of ipRGCs has shed light on their diverse roles in various visual functions and behaviors, such as regulating circadian rhythms, driving pupillary light reflex, and modulating mood and alertness. The presence of melanopsin as a unique molecular signature has enabled the development of molecular and genetic tools for studying ipRGC circuits.
The melanopsin-expressing, intrinsically photosensitive retinal ganglion cells (ipRGCs) are a relatively recently discovered class of atypical ganglion cell photoreceptor. These ipRGCs are a morphologically and physiologically heterogeneous population that project widely throughout the brain and mediate a wide array of visual functions ranging from photoentrainment of our circadian rhythms, to driving the pupillary light reflex to improve visual function, to modulating our mood, alertness, learning, sleep/wakefulness, regulation of body temperature, and even our visual perception. The presence of melanopsin as a unique molecular signature of ipRGCs has allowed for the development of a vast array of molecular and genetic tools to study ipRGC circuits. Given the emerging complexity of this system, this review will provide an overview of the genetic tools and methods used to study ipRGCs, how these tools have been used to dissect their role in a variety of visual circuits and behaviors in mice, and identify important directions for future study.
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