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GluN2B S1303 Phosphorylation by CaMKII or DAPK1: No Indication for Involvement in Ischemia or LTP

Overview
Journal iScience
Publisher Cell Press
Date 2021 Oct 27
PMID 34704002
Citations 11
Authors
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Abstract

Binding of two different CaM kinases, CaMKII and DAPK1, to the NMDA-type glutamate receptor (NMDAR) subunit GluN2B near S1303 has been implicated in excitotoxic/ischemic neuronal cell death. The GluN2B mutation (L1298A, R1300Q) is neuroprotective but abolishes only CaMKII but not DAPK1 binding. However, both kinases can additionally phosphorylate GluN2B S1303. Thus, we here tested S1303 phosphorylation for possible contribution to neuronal cell death. The GluN2B mutation completely abolished phosphorylation by CaMKII and DAPK1, suggesting that the mutation could mediate neuroprotection by disrupting phosphorylation. However, S1303 phosphorylation was not increased by excitotoxic insults in hippocampal slices or by global cerebral ischemia induced by cardiac arrest and cardiopulmonary resuscitation . In hippocampal cultures, S1303 phosphorylation was induced by chemical LTD but not LTP stimuli. These results indicate that the additional effect of the GluN2B mutation on phosphorylation needs to be considered only in LTD but not in LTP or ischemia/excitotoxicity.

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References
1.
Lee H, Kameyama K, Huganir R, Bear M . NMDA induces long-term synaptic depression and dephosphorylation of the GluR1 subunit of AMPA receptors in hippocampus. Neuron. 1998; 21(5):1151-62. DOI: 10.1016/s0896-6273(00)80632-7. View

2.
McKay S, Ryan T, McQueen J, Indersmitten T, Marwick K, Hasel P . The Developmental Shift of NMDA Receptor Composition Proceeds Independently of GluN2 Subunit-Specific GluN2 C-Terminal Sequences. Cell Rep. 2018; 25(4):841-851.e4. PMC: 6218242. DOI: 10.1016/j.celrep.2018.09.089. View

3.
Coultrap S, Vest R, Ashpole N, Hudmon A, Bayer K . CaMKII in cerebral ischemia. Acta Pharmacol Sin. 2011; 32(7):861-72. PMC: 3846291. DOI: 10.1038/aps.2011.68. View

4.
Barria A, Malinow R . NMDA receptor subunit composition controls synaptic plasticity by regulating binding to CaMKII. Neuron. 2005; 48(2):289-301. DOI: 10.1016/j.neuron.2005.08.034. View

5.
Sessoms-Sikes S, Honse Y, Lovinger D, Colbran R . CaMKIIalpha enhances the desensitization of NR2B-containing NMDA receptors by an autophosphorylation-dependent mechanism. Mol Cell Neurosci. 2005; 29(1):139-47. DOI: 10.1016/j.mcn.2005.01.006. View