کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2040347 1073107 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A Role for Stargazin in Experience-Dependent Plasticity
ترجمه فارسی عنوان
نقش ستگارزین در پلاستیک بودن وابسته به تجربه
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
چکیده انگلیسی


• Vision regulates Stargazin levels and phosphorylation at the retinogeniculate synapse
• Stargazin mediates experience-dependent remodeling of the retinogeniculate synapse
• Stargazin is essential for synaptic scaling
• Stargazin phosphorylation mediates homeostatic plasticity

SummaryDuring development, neurons are constantly refining their connections in response to changes in activity. Experience-dependent plasticity is a key form of synaptic plasticity, involving changes in α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor (AMPAR) accumulation at synapses. Here, we report a critical role for the AMPAR auxiliary subunit stargazin in this plasticity. We show that stargazin is functional at the retinogeniculate synapse and that in the absence of stargazin, the refinement of the retinogeniculate synapse is specifically disrupted during the experience-dependent phase. Importantly, we found that stargazin expression and phosphorylation increased with visual deprivation and led to reduced AMPAR rectification at the retinogeniculate synapse. To test whether stargazin plays a role in homeostatic plasticity, we turned to cultured neurons and found that stargazin phosphorylation is essential for synaptic scaling. Overall, our data reveal an important role for stargazin in regulating AMPAR abundance and composition at glutamatergic synapses during homeostatic and experience-dependent plasticity.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: - Volume 7, Issue 5, 12 June 2014, Pages 1614–1625
نویسندگان
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