Research Project
Grant-in-Aid for Scientific Research (C)
Synapse function and plasticity depend on the morphology of dendritic spine. Here, we report that Phldb2 (pleckstrin homology-like domain, family B, member 2, LL5beta), one binding partner for a well-known actin-cross-linking protein Filamin A, works as a positive regulator of spine maturation. We generated LL5beta knockout mice and found that a proportion of immature spines (filopodia and thin spines) increased in the hippocampus in vivo, which is consistent with our previous observations with LL5beta knocked-down cultured hippocampal neurons. Next, we asked whether or not LL5beta is involved in synaptic plasticity. We observed that NMDA-induced AMPA receptor endocytosis and low-frequency stimulation-induced long-term depression were blocked in hippocampal neurons of the LL5beta knockout mice. Therefore, it is likely that LL5beta plays an important role for the synaptic plasticity and the maturation of dendritic spines.
All 2013 2012 2011 Other
All Journal Article (12 results) (of which Peer Reviewed: 12 results) Presentation (25 results) Remarks (1 results)
Cereb. Cortex
Volume: 23(6) Pages: 1410-1423
Neurosci. Lett
Volume: 547 Pages: 87-91
Molecular Autism
Volume: 4(1) Pages: 20-20
120005293585
Sci. Rep
Volume: 3 Pages: 1224-1224
Skelet Muscle
Volume: 3(1) Pages: 5-5
Cerebral Cortex
Volume: (in press) Issue: 6 Pages: 1410-1423
10.1093/cercor/bhs123
BMC Psychiatry
Volume: 12(1) (case report) Pages: 110-110
J . Neurosci
Volume: 32(32) Pages: 11050-11066
NeuroEndocrinol. Lett
Volume: 33(1) Pages: 1-2
J . Clin. Endocrinol. Metab
Volume: 97(4)
PLoS ONE
Volume: 7(3)
Toxicology
Volume: 16;295(1-3) Pages: 31-8