Colocalization of APC and PSD-95 in the nerve fi ber as well as in the post-synapse of matured neurons

Takanori Onouchi, Nobutaka Takamori, Takao Senda

研究成果: Article査読

2 被引用数 (Scopus)

抄録

Adenomatous polyposis coli protein (APC) is highly expressed in the nervous tissue, but its function there is not yet known. We previously found that the microtubule-bundling activity of APC is stimulated by its interaction with PSD-95, a neuronal scaffolding protein, in cultured COS-7 cells. In the present study, we investigated the distribution and localization of the intrinsic APC and PSD-95 in both cultured rat hippocampal neurons and in the rat cerebellum by immunofl uorescence and immunoelectron microscopy. In cultured neurons, most of the PSD-95 immunofl uorescence puncta were colocalized with APC, and the APC and PSD-95 immunogolds were colocalized in the nerve fi bers as well as in the postsynaptic site, but not in the presynaptic site. In the molecular layer of the rat cerebellum, colocalization of APC and PSD-95 was also detected in the nerve fi bers and the postsynaptic site, but not in the presynaptic site. Based on these results, we conclude that APC and PSD-95 colocalize and bind to form a protein complex in nerve fi bers as well as in postsynaptic sites in matured neurons, suggesting the involvement of the APC/ PSD-95 complex in the microtubule functions within the nerve fi bers and the synapse functions at the postsynaptic site.

本文言語English
ページ(範囲)152-160
ページ数9
ジャーナルMedical Molecular Morphology
45
3
DOI
出版ステータスPublished - 06-2012

All Science Journal Classification (ASJC) codes

  • 病理学および法医学
  • 分子生物学

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