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个人简介
Description of Research Expertise
Research Interests
The regulation and function of sleep
Key Words: sleep, ecdysis, molting, behavior, amyloid, neuropeptides
Description of Research
Quiescent behavioral states are universal to the animal world with the most famous and mysterious of these being sleep. Despite the fact that we spend one third of our life sleeping, and despite the fact that all animals sleep, the core function of sleep remains a mystery. In addition, the molecular basis underlying sleep/wake regulation is poorly understood.
We use the nematode C. elegans as a model system to address these questions. C. elegans offers many experimental advantages including powerful genetic tools as well as a simple neuroanatomy.
Growth of C. elegans from an embryo to an adult is punctuated by four molts, during which the animal secretes a new cuticle and sheds its old one. Prior to each molt the worm has a quiescent behavioral state called lethargus. Lethargus has several similarities to sleep including rapid reversibility to strong stimulation, increased sensory arousal threshold, and homeostatic regulation. Remarkably, genetic regulation of lethargus quiescence is similar to genetic regulation of sleep in other animals. In particular, lethargus is regulated by a gene that is very similar to a gene regulating circadian sleep in other animals.
In addition to developmentally-timed sleep sleep, C. elegans also sleeps during the adult stage, after exposure to an environment that induces cellular stress. This stress-induced sleep requires just a single neuron, called the ALA neuron, which secretes neuropeptides including those encoded by the gene flp-13.
We have identified additional new sleep regulators in C. elegans and are currently studying how and in which cells these regulators function.
By studying the purpose and regulation of nematode sleep, we will identify additional novel sleep regulators, and gain insight into why sleep had evolved, a central biological mystery.
Rotation projects
Please see David about possible projects.
Description of Clinical Expertise
Sleep disorders: In particular disorders of sleep regulation and restless leg syndrome.
Research Interests
The regulation and function of sleep
Key Words: sleep, ecdysis, molting, behavior, amyloid, neuropeptides
Description of Research
Quiescent behavioral states are universal to the animal world with the most famous and mysterious of these being sleep. Despite the fact that we spend one third of our life sleeping, and despite the fact that all animals sleep, the core function of sleep remains a mystery. In addition, the molecular basis underlying sleep/wake regulation is poorly understood.
We use the nematode C. elegans as a model system to address these questions. C. elegans offers many experimental advantages including powerful genetic tools as well as a simple neuroanatomy.
Growth of C. elegans from an embryo to an adult is punctuated by four molts, during which the animal secretes a new cuticle and sheds its old one. Prior to each molt the worm has a quiescent behavioral state called lethargus. Lethargus has several similarities to sleep including rapid reversibility to strong stimulation, increased sensory arousal threshold, and homeostatic regulation. Remarkably, genetic regulation of lethargus quiescence is similar to genetic regulation of sleep in other animals. In particular, lethargus is regulated by a gene that is very similar to a gene regulating circadian sleep in other animals.
In addition to developmentally-timed sleep sleep, C. elegans also sleeps during the adult stage, after exposure to an environment that induces cellular stress. This stress-induced sleep requires just a single neuron, called the ALA neuron, which secretes neuropeptides including those encoded by the gene flp-13.
We have identified additional new sleep regulators in C. elegans and are currently studying how and in which cells these regulators function.
By studying the purpose and regulation of nematode sleep, we will identify additional novel sleep regulators, and gain insight into why sleep had evolved, a central biological mystery.
Rotation projects
Please see David about possible projects.
Description of Clinical Expertise
Sleep disorders: In particular disorders of sleep regulation and restless leg syndrome.
研究兴趣
论文共 107 篇作者统计合作学者相似作者
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Katherine Moawad,David Raizen
CELL RESEARCHno. 5 (2024): 341-342
JOURNAL OF NEUROSCIENCEno. 35 (2024)
Klaas Koop, Weimin Yuan,Federico Tessadori,Wilmer R. Rodriguez-Polanco,Jeremy Grubbs,Bo Zhang,Matt Osmond,Gail Graham,Sarah Sawyer,Erin Conboy,Francesco Vetrini,Kayla Treat,Rafal Ploski,Victor Murcia Pienkowski,Anna Klosowska,Elizabeth Fieg,Joel Krier,Coralie Mallebranche,Ziegler Alban,Kimberly A. Aldinger,Deborah Ritter,Ellen Macnamara,Bonnie Sullivan,John Herriges,Joseph T. Alaimo,Catherine Helbig,Colin A. Ellis,Clare van Eyk,Jozef Gecz,Daniel Farrugia,Ikeoluwa Osei-Owusu,Lesley Ades,Marie-Jose van den Boogaard,Sabine Fuchs,Jeroen Bakker,Karen Duran,Zachary D. Dawson,Anika Lindsey,Huiyan Huang,Dustin Baldridge,Gary A. Silverman,Barth D. Grant,David Raizen,Gijs van Haaften,Stephen C. Pak,Holger Rehmann,Tim Schedl,Peter van Hasselt
David M. Raizen,Janet Mullington,Christelle Anaclet,Gerard Clarke,Hugo Critchley,Robert Dantzer,Ronald W. Davis,Kelly L. Drew,Joshua P. Fessel,Patrick M. Fuller, Elaine Gibson,Mary E. Harrington,W. Ian Lipkin,Elizabeth B. Klerman,Nancy G. Klimas,Anthony L. Komaroff,Walter J. Koroshetz,Lauren Krupp,Annapoorna Kuppuswamy,Julie Lasselin, Laurie Lewis,Pierre J. Magistretti, Heidi Y. Matos,Christine Miaskowski,Andrew H. Miller,Avindra Nath,Maiken Nedergaard,Mark R. Opp,Marylyn D. Ritchie,Dragana Rogulja,Asya Rolls,John D. Salamone,Clifford B. Saper,Vicky Whittemore,Glenn R. Wylie,Jarred Younger,Phyllis C. Zee,H. Craig Heller
Sleepno. 9 (2023)
Zihao Li,Anthony D. Fouad,Peter D. Bowlin, Yuying Fan,Siming He, Meng-Chuan Chang,Angelica Du,Christopher Teng, Alexander Kassouni,Hongfei Ji,David M. Raizen,Christopher Fang-Yen
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作者统计
#Papers: 107
#Citation: 4532
H-Index: 33
G-Index: 67
Sociability: 6
Diversity: 3
Activity: 24
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