Homeostatic plasticity shapes the visual system's first synapse.
Homeostatic plasticity shapes the visual system's first synapse.
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DOI:
10.1038/s41467-017-01332-7
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发表时间:
2017-10-31
影响因子:
16.6
通讯作者:
Kerschensteiner D
中科院分区:
文献类型:
--
作者:
Johnson RE;Tien NW;Shen N;Pearson JT;Soto F;Kerschensteiner D
Vision in dim light depends on synapses between rods and rod bipolar cells (RBCs). Here, we find that these synapses exist in multiple configurations, in which single release sites of rods are apposed by one to three postsynaptic densities (PSDs). Single RBCs often form multiple PSDs with one rod; and neighboring RBCs share ~13% of their inputs. Rod-RBC synapses develop while ~7% of RBCs undergo programmed cell death (PCD). Although PCD is common throughout the nervous system, its influences on circuit development and function are not well understood. We generate mice in which ~53 and ~93% of RBCs, respectively, are removed during development. In these mice, dendrites of the remaining RBCs expand in graded fashion independent of light-evoked input. As RBC dendrites expand, they form fewer multi-PSD contacts with rods. Electrophysiological recordings indicate that this homeostatic co-regulation of neurite and synapse development preserves retinal function in dim light. Retinal rod bipolar cells (RBCs) partially undergo programmed cell death triggering cell density-dependent plasticity. This study shows that increased removal of RBCs using genetic approaches causes dendrites of the remaining RBCs to expand and contact more rod photoreceptors while reducing connectivity with each.
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DOI:
10.1002/cne.22270
发表时间:
2010-04-15
期刊:
The Journal of comparative neurology
影响因子:
--
作者:
Keeley PW;Reese BE
通讯作者:
Reese BE
影响因子:
1.9
作者:
Hasan N;Ray TA;Gregg RG
通讯作者:
Gregg RG
影响因子:
16.2
作者:
Kim, Jun Chul;Cook, Melloni N.;Carey, Megan R.;Shen, Chung;Regehr, Wade G.;Dymecki, Susan M.
通讯作者:
Dymecki, Susan M.
DOI:
10.1523/jneurosci.1367-09.2009
发表时间:
2009-07-22
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Cao Y;Masuho I;Okawa H;Xie K;Asami J;Kammermeier PJ;Maddox DM;Furukawa T;Inoue T;Sampath AP;Martemyanov KA
通讯作者:
Martemyanov KA
影响因子:
9.8
作者:
Audo, Isabelle;Bujakowska, Kinga;Zeitz, Christina
通讯作者:
Zeitz, Christina