2011
DOI: 10.1523/jneurosci.2538-10.2011
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Neuregulin 1 Promotes Excitatory Synapse Development and Function in GABAergic Interneurons

Abstract: Neuregulin 1 (NRG1) and its receptor ErbB4 are both susceptibility genes of schizophrenia. However, little is known about the underlying mechanisms of their malfunction. Although ErbB4 is enriched in GABAergic interneurons, the role of NRG1 in excitatory synapse formation in these neurons remains poorly understood. We showed that NRG1 increased both the number and size of PSD-95 puncta and the frequency and amplitude of miniature EPSCs (mEPSCs) in GABAergic interneurons, indicating that NRG1 stimulates the for… Show more

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Cited by 203 publications
(175 citation statements)
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“…These results suggest that NRG1 slowly promotes developmental maturation of and/or synapse formation at excitatory nerve terminals in this neuronal population. This explanation is in accordance with the reports that the activation of ErbB4 promotes presynaptic development of excitatory input synapses in hippocampal pyramidal cells Krivosheya et al, 2008) as well as in cultured cortical GABAergic neurons (Ting et al, 2011).…”
Section: Acute and Subchronic Effects Of Nrg1 On Excitatory Input Synsupporting
confidence: 93%
“…These results suggest that NRG1 slowly promotes developmental maturation of and/or synapse formation at excitatory nerve terminals in this neuronal population. This explanation is in accordance with the reports that the activation of ErbB4 promotes presynaptic development of excitatory input synapses in hippocampal pyramidal cells Krivosheya et al, 2008) as well as in cultured cortical GABAergic neurons (Ting et al, 2011).…”
Section: Acute and Subchronic Effects Of Nrg1 On Excitatory Input Synsupporting
confidence: 93%
“…For images containing primary neurons, the VGlut1+ and PSD95+ puncta were masked using the binary threshold function in NIS-Elements AR software (Nikon). The proximal dendrites were defined as neurites containing PSD95+ puncta within 30 μm from the PV+/DsRed+ cell body as previously characterized (19). The cell body and one randomly selected proximal dendrite from each sampled PV+/DsRed+ neuron were manually masked.…”
Section: Methodsmentioning
confidence: 99%
“…ErbB4 kinase activity is necessary for excitatory synapse formation (19,29). To investigate whether the differential effect of ErbB4 splice variants reflects differences in their kinase activity, we expressed ErbB4 JM-a/CYT-1 or JM-b/ CYT-2 variant in HEK-293 cells and assessed phosphorylation levels of ErbB4 in response to neuregulin 1 stimulation.…”
Section: Differential Kinase Activity Of Erbb4 Splice Variants In Resmentioning
confidence: 99%
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